1. The utility model provides a gas chromatograph who possesses gas leakage protection, includes base (1), controller (3) and stove incubator (2), equal fixed connection in the top of base (1) of controller (3) and stove incubator (2), its characterized in that, the inside of stove incubator (2) is provided with heater (10), introduction port (8), chromatographic column (12) and detector (11), and introduction port (8) and detector (11) all set up in the top inner wall of stove incubator (2), and heater (10) set up in the inner wall at stove incubator (2) middle part, and chromatographic column (12) are connected between introduction port (8) and detector (11), one side of stove incubator (2) articulates there is chamber door (4), and the inboard of chamber door (4) is fixed with thermal adaptation centre gripping subassembly, the inner wall sliding connection of stove incubator (2) one side has breaker (7), and one side of the breaker (7) is provided with a breaking groove (22) which is adapted to the thermal adaptation clamping assembly, the bottom of the breaker (7) is provided with a mechanical clamping assembly, and one end of the chromatographic column (12) close to the sample inlet (8) is inserted into the breaking groove (22).

2. The gas chromatograph with gas leakage protection of claim 1, heat adaptation centre gripping subassembly is including deciding seat (6), remove seat (13), piston post (15), piston (16), piston cylinder (18) and clear water (20), decide inboard in chamber door (4) of seat (6) fixed connection, second recess (7) have been seted up at the middle part of deciding seat (6) one side, piston cylinder (18) fixed connection is in the inside of second recess (7), piston (16) sliding connection is in the inside of piston cylinder (18), piston rod (15) fixed connection is in the middle part of piston (16) one side, first recess (14) have been seted up at one side middle part of removing seat (6), the one end fixed connection of piston rod (15) is in the inside of first recess (14), the inside packing of piston cylinder (18) has clear water (20), the middle part of keeping away from removing seat (13) one side of deciding seat (6) is seted up evenly distributed's heat transfer hole (19).

3. The gas chromatograph with gas leakage protection according to claim 1, wherein two sliding grooves (21) are formed in one side of the breaker (7), and two sliding blocks adapted to the sliding grooves (21) are fixedly connected to the inside of the furnace temperature box (2).

4. The gas chromatograph with gas leakage protection according to claim 1, wherein the mechanical clamping assembly comprises a first guide bar (23), a clamping block (24), a protection pad (25), a second guide bar (26), a knob (27) and a screw (28), wherein four guide holes (29) are formed in one side of the partition groove (22), the four first guide bars (23) are respectively inserted into the four guide holes (29), the clamping block (24) is fixedly connected to one side of the first guide bar (23), the screw (28) is in threaded connection with one side of the partition (7), one end of the screw (28) is rotatably connected to one side of the clamping block (24) through a bearing, the knob (27) is fixedly connected to the other end of the screw (28), the second guide bar (26) is inserted into the side of the partition (7), and one end of the second guide bar (26) is fixedly connected to the clamping block (24), the protection pad (25) is adhered to one side of the clamping block (24) close to the chromatographic column (12), one side of the protection pad (25) is provided with transverse grooves distributed at equal intervals, and the cross sections of the transverse grooves are T-shaped.

5. The gas chromatograph with gas leakage protection as claimed in claim 1, wherein a sleeve (30) is fixedly connected to an inner wall of the top of the oven chamber (2), a first spring (32) is fixedly connected to an inner wall of the top of the sleeve (30), a hanging plate (38) is fixedly connected to the bottom of the first spring (32), a U-shaped hanging bracket (37) is fixedly connected to the bottom of the hanging plate (38), and the top of the chromatographic column (12) is clamped inside the U-shaped hanging bracket (37).

6. The gas chromatograph with gas leakage protection according to claim 5, wherein the top of each of the two sides of the hanging plate (38) is fixedly connected with a guide rod (35), the two sides of the hanging cylinder (30) are respectively provided with a slot (31), the two guide rods (35) are respectively inserted into the two slots (31), the top of one side of the two guide rods (35) close to the top is fixedly connected with a limit block (34), the side of the two slots (31) close to the top is provided with a limit groove (33), and the two limit blocks (34) are respectively connected into the two limit grooves (33) in a sliding manner.

7. The gas chromatograph with gas leakage protection according to claim 1, wherein the inner wall of the bottom of the oven chamber (2) is fixedly connected with a support column (39), the top of the support column (39) is fixedly connected with a clamping sleeve (42), the bottom of the chromatographic column (12) is sleeved inside the clamping sleeve (42), the inner wall of the top of the clamping sleeve (42) is fixedly connected with a second spring (43), the bottom of the second spring (43) is fixedly connected with a clamping sheet (40), and the bottom of the clamping sheet (40) is bonded with a rubber sheet (44).

8. The gas chromatograph with gas leakage protection as claimed in claim 7, wherein the electromagnet (41) is fixedly connected to the inner wall of the top of the sleeve (40), and the clamping piece (40) is made of steel.

9. The gas chromatograph with gas leakage protection according to claim 1, wherein two positioning bars (5) are fixedly connected to one side of the chamber door (4), the two positioning bars (5) are made of steel material, two adsorption bars (9) adapted to the positioning bars (5) are fixedly connected to one side of the furnace incubator (2), and the adsorption bars (9) are made of permanent magnet material.

Background

The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by using a chromatographic separation technology and a detection technology. The method can be used for analyzing heat-stable organic matters with the boiling point not more than 500 ℃ in soil, such as volatile organic matters, organic chlorine, organic phosphorus, polycyclic aromatic hydrocarbons, phthalate esters and the like.

The separation system is the heart portion of the chromatograph. The function of the method is to separate each component in the sample. The separation system consists of a column chamber, a chromatographic column and a temperature control component. Wherein the chromatographic column is a core component of the chromatograph.

But adopt the split type to connect between current gas chromatograph's the mechanism of appearance and the chromatographic column, the chromatographic column can produce irregular rocking under the influence of temperature and inside air current, leads to the junction of introduction port and chromatographic column to have the gas leakage risk, and the gas chromatograph who possesses gas leakage protection of urgent need design solves above-mentioned problem.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a gas chromatograph with gas leakage protection.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a gas chromatograph who possesses gas leakage protection, includes base, controller and stove incubator, the equal fixed connection in the top of base of controller and stove incubator, the inside of stove incubator is provided with heater, introduction port, chromatographic column and detector, and introduction port and detector all set up in the top inner wall of stove incubator, and the heater sets up in the inner wall at stove incubator middle part, and the chromatographic column is connected between introduction port and detector, one side of stove incubator articulates there is the chamber door, and the inboard of chamber door is fixed with thermal adaptation centre gripping subassembly, the inner wall sliding connection of stove incubator one side has the wall breaker, and one side of breaker sets up the wall groove that adapts to thermal adaptation centre gripping subassembly, the bottom of wall breaker is provided with mechanical centre gripping subassembly, and the chromatographic column is close to the one end of introduction port and pegs graft in the inside of separating the groove.

Preferably, heat adaptation centre gripping subassembly is including deciding the seat, remove the seat, the piston post, a piston section of thick bamboo and clear water, decide the inboard of seat fixed connection in chamber door, decide the middle part of seat one side and seted up the second recess, a piston section of thick bamboo fixed connection is in the inside of second recess, piston sliding connection is in the inside of a piston section of thick bamboo, piston rod fixed connection is in the middle part of piston one side, remove one side middle part of seat and seted up first recess, the one end fixed connection of piston rod is in the inside of first recess, the inside packing of a piston section of thick bamboo has the clear water, decide the seat and keep away from the middle part of removing seat one side and set up evenly distributed's heat transfer hole.

Preferably, two chutes are formed in one side of the breaker, and two sliding blocks adapted to the chutes are fixedly connected inside the furnace temperature box.

Preferably, mechanical centre gripping subassembly includes first gib block, the grip block, the protection pad, the second gib block, knob and screw rod, four guiding holes have been seted up to one side of separating the groove, four first gib blocks are pegged graft respectively in the inside of four guiding holes, one side fixedly connected with grip block of first gib block, screw rod threaded connection is in one side of breaker, the one end of screw rod is passed through the bearing and is rotated and connect in one side of grip block, knob fixed connection is in the other end of screw rod, the second gib block is pegged graft in the side of breaker, and the one end and the grip block fixed connection of second gib block, the protection pad bonds in one side that the grip block is close to the chromatographic column, equidistant distribution's cross-slot has been seted up to one side of protection pad, the cross-section of cross-slot sets up to "T" type.

Preferably, the inner wall of the top of the furnace temperature box is fixedly connected with a sleeve, the inner wall of the top of the sleeve is fixedly connected with a first spring, the bottom of the first spring is fixedly connected with a hanging plate, the bottom of the hanging plate is fixedly connected with a U-shaped hanging bracket, and the top of the chromatographic column is clamped in the U-shaped hanging bracket.

Preferably, the equal fixedly connected with guide arm in top of hanger plate both sides, and hang a both sides of section of thick bamboo and all seted up the slot, two guide arms are pegged graft respectively in the inside of two slots, and two guide arms are thought to be close to the equal fixedly connected with stopper in top of one side, and the spacing groove has all been seted up to one side that two slots are close to mutually, and two stoppers are sliding connection in the inside of two spacing grooves respectively.

Preferably, the inner wall fixedly connected with support column of stove incubator bottom, and the top fixedly connected with cutting ferrule of support column, inside the cutting ferrule is cup jointed to the bottom of chromatographic column, the top inner wall fixedly connected with second spring of cutting ferrule, the bottom fixedly connected with supporting piece of second spring, the bottom of supporting piece bonds and has the sheet rubber.

Preferably, the inner wall of the top of the clamping sleeve is fixedly connected with an electromagnet, and the clamping piece is made of steel materials.

Preferably, two location strips of chamber door one side fixedly connected with, and two location strips all adopt steel material, two adaptation in the adsorption strip of location strip of one side fixedly connected with of stove temperature box, the adsorption strip adopts permanent magnet material.

Compared with the prior art, the invention provides a gas chromatograph with gas leakage protection, which has the following beneficial effects:

1. through setting up the wall and separating the groove, the wall separates the chromatographic column into two sections through mechanical clamping component, leave the surplus in one section of being close to the introduction port, the surplus part can not be tight when can ensure the chromatographic column shrinkage, prevent that introduction port and chromatographic column from breaking away from, when the main part of chromatographic column appears rocking, partial chromatographic column between mechanical clamping component and the introduction port can avoid receiving the traction, maintain the fastening connection of introduction port and chromatographic column one end, ensure not to produce gas leakage phenomenon, close the chamber door after the detection begins, the ambient temperature of stove incubator risees, thermal adaptation clamping component automatic filling cuts off the inslot portion, further promote the stability between chromatographic column and the introduction port.

2. Through setting up the piston cylinder, decide the seat and remove the seat, after closing the chamber door, decide the seat and remove the common card of seat and go into and separate the off-groove, the heater begins to heat, the clear water is heated the gasification, promote through piston and piston rod and remove the seat, make and remove the seat centre gripping chromatographic column from the side, after the detection, the temperature in the furnace temperature case reduces, the clear water liquefies again, the inside atmospheric pressure of piston cylinder reduces, pull back through the piston rod and remove the seat, first recess and second recess are used for holding piston column and piston cylinder respectively, reduce the subassembly occupation space, the heat transfer hole is favorable to the piston cylinder to be heated fast.

3. Through setting up first gib block, the second gib block, the screw rod, grip block and protection pad, twist the screw rod through the knob, the grip block compresses tightly the chromatographic column on the inner wall of cutting off the groove, chromatographic column both sides are listed as to four first gib blocks, prevent that the chromatographic column from squinting in the clamping process, the second gib block plays limiting displacement to the removal of grip block, the protection pad plays cushioning effect between grip block and chromatographic column, prevent to cause the damage to the chromatographic column, the contact surface that T type cross slot is favorable to protection pad and chromatographic column more takes place deformation, optimize buffering effect.

4. Through setting up U type gallows, first spring and sleeve, suspend in midair the top of chromatographic column through U type gallows, strengthen the stability of chromatographic column from the top, the hanger plate is fixed in the sleeve below through first spring, therefore hanger plate and U type gallows can realize the altitude variation of certain limit, can be applicable to the chromatographic column of different specifications and suspend in midair, reduce the deformation degree of chromatographic column self.

5. Through setting up cutting ferrule, centre gripping piece, second spring and electro-magnet, when needing to follow the cutting ferrule with the chromatographic column and take out, the electro-magnet circular telegram adsorbs the centre gripping piece, mentions the centre gripping piece from the top outer wall department of chromatographic column, and the second spring further compresses this moment, and when needing centre gripping chromatographic column once more, electro-magnet deenergization, the second spring can promote the centre gripping piece downwards, accomplishes the centre gripping to the chromatographic column.

Drawings

Fig. 1 is a schematic structural diagram of a gas chromatograph with gas leakage protection according to the present invention;

fig. 2 is a schematic structural diagram of a gas chromatograph with gas leakage protection at a position a according to the present invention;

fig. 3 is a cross-sectional view of a thermally adaptive clamping assembly of a gas chromatograph with gas leakage protection according to the present invention;

fig. 4 is a schematic structural diagram of a breaker of a gas chromatograph with gas leakage protection according to the present invention;

fig. 5 is a schematic structural diagram of a clamping block of a gas chromatograph with gas leakage protection according to the present invention;

fig. 6 is a schematic structural diagram of a gas chromatograph with gas leakage protection at position B according to the present invention;

fig. 7 is a schematic structural diagram of a suspension assembly of a gas chromatograph with gas leakage protection according to the present invention;

fig. 8 is a schematic structural diagram of a gas chromatograph with gas leakage protection at position C according to the present invention.

In the figure: 1-base, 2-furnace incubator, 3-controller, 4-chamber door, 5-positioning bar, 6-fixed seat, 7-isolator, 8-sample inlet, 9-adsorption bar, 10-heater, 11-detector, 12-chromatographic column, 13-moving seat, 14-first groove, 15-piston column, 16-piston, 17-second groove, 18-piston cylinder, 19-heat exchange hole, 20-clear water, 21-sliding groove, 22-isolating groove, 23-first guide bar, 24-clamping block, 25-pad, 26-second guide bar, 27-knob, 28-screw, 29-guide hole, 30-suspension cylinder, 31-slot, 32-first spring, 33-limiting groove, 34-a limiting block, 35-a guide rod, 36-, 37-U-shaped hanging brackets, 38-a hanging plate, 39-a supporting column, 40-a clamping sheet, 41-an electromagnet, 42-a clamping sleeve and 43-a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-8, a gas chromatograph with gas leakage protection comprises a base 1, a controller 3 and a furnace temperature box 2, wherein the controller 3 and the furnace temperature box 2 are both fixedly connected to the top of the base 1, a heater 10, a sample inlet 8, a chromatographic column 12 and a detector 11 are arranged inside the furnace temperature box 2, the sample inlet 8 and the detector 11 are both arranged on the inner wall of the top of the furnace temperature box 2, the heater 10 is arranged on the inner wall of the middle part of the furnace temperature box 2, the chromatographic column 12 is connected between the sample inlet 8 and the detector 11, one side of the furnace temperature box 2 is hinged with a box door 4, and the inner side of the furnace door 4 is fixed with a thermal adaptive clamping component, the inner wall of one side of the furnace temperature box 2 is connected with a breaker 7 in a sliding way, and a partition groove 22 adapted to the thermal adaptation clamping assembly is formed in one side of the partition 7, a mechanical clamping assembly is arranged at the bottom of the partition 7, and one end of the chromatographic column 12 close to the sample inlet 8 is inserted into the partition groove 22.

In the invention, the heat adaptive clamping assembly comprises a fixed seat 6, a movable seat 13, a piston column 15, a piston 16, a piston cylinder 18 and clean water 20, the fixed seat 6 is fixedly connected to the inner side of the box door 4, the middle part of one side of the fixed seat 6 is provided with a second groove 7, the piston cylinder 18 is fixedly connected to the inside of the second groove 7, the piston 16 is slidably connected to the inside of the piston cylinder 18, a piston rod 15 is fixedly connected to the middle part of one side of the piston 16, the middle part of one side of the movable seat 6 is provided with a first groove 14, one end of the piston rod 15 is fixedly connected to the inside of the first groove 14, the inside of the piston cylinder 18 is filled with the clean water 20, the middle part of one side of the fixed seat 6, far away from the movable seat 13, is provided with uniformly distributed heat exchange holes 19, after the box door 4 is closed, the fixed seat 6 and the movable seat 13 are clamped into a separation groove 22 together, the heater 10 starts to heat, the clean water 20 is gasified by heating, the piston 16 and pushes the movable seat 13, the movable seat 13 is made to clamp the chromatographic column 12 from the side, after the detection is finished, the temperature in the furnace temperature box 2 is reduced, the clean water 20 is liquefied again, the air pressure in the piston cylinder 18 is reduced, the movable seat 13 is pulled back through the piston rod 15, the first groove 14 and the second groove 17 are respectively used for accommodating the piston column 15 and the piston cylinder 18, the occupied space of the components is reduced, and the heat exchange holes 18 are beneficial to quick heating of the piston cylinder 18.

Wherein, two spouts 21 have been seted up to one side of wall 7, and the inside fixedly connected with of furnace temperature case 2 two sliders of adaptation in spout 21, wall 7 through two spouts 21 sliding connection on the lateral wall of furnace temperature case 2, the dismantlement and the installation of wall 7 of being convenient for facilitate for chromatographic column 12's maintenance work.

Wherein, the mechanical clamping assembly comprises a first guide strip 23, a clamping block 24, a protection pad 25, a second guide strip 26, a knob 27 and a screw 28, one side of the partition groove 22 is provided with four guide holes 29, the four first guide strips 23 are respectively inserted into the four guide holes 29, one side of the first guide strip 23 is fixedly connected with the clamping block 24, the screw 28 is in threaded connection with one side of the breaker 7, one end of the screw 28 is rotatably connected with one side of the clamping block 24 through a bearing, the knob 27 is fixedly connected with the other end of the screw 28, the second guide strip 26 is inserted into the side surface of the breaker 7, one end of the second guide strip 26 is fixedly connected with the clamping block 24, the protection pad 25 is adhered to one side of the clamping block 24 close to the chromatographic column 12, one side of the protection pad 25 is provided with transverse grooves distributed at equal intervals, the cross sections of the transverse grooves are arranged in a T shape, the screw 28 is rotated through the knob 27, the clamping block 24 compresses the chromatographic column 12 on the inner wall of the, four first guide strip 23 divide and to be listed as 12 both sides of chromatographic column, prevent that chromatographic column 12 from squinting in clamping process, and second guide strip 26 plays limiting displacement to grip block 24's removal, and protection pad 25 plays cushioning effect between grip block 24 and chromatographic column 12, prevents to cause the damage to chromatographic column 12, and the T type cross slot is favorable to protection pad 25 and chromatographic column 12's contact surface more to take place deformation, optimizes buffering effect.

Wherein, the inner wall fixedly connected with sleeve 30 at furnace temperature case 2 top, and the first spring 32 of the top inner wall fixedly connected with of sleeve 30, the bottom fixedly connected with hanger plate 38 of first spring 32, the bottom fixedly connected with U type gallows 37 of hanger plate 38, the inside in U type gallows 37 of top joint of chromatographic column 12, suspend in midair the top of chromatographic column 12 through U type gallows 37, strengthen the stability of chromatographic column 12 from the top, hanger plate 38 is fixed in sleeve 30 below through first spring 32, therefore hanger plate 38 and U type gallows 37 can realize the change in height of certain extent, can be applicable to the chromatographic column 12 of different specifications and suspend in midair, reduce the deformation degree of chromatographic column 12 self.

Wherein, the equal fixedly connected with guide arm 35 in top of hanger plate 38 both sides, and hang in midair the both sides of a section of thick bamboo 30 and all seted up slot 31, two guide arms 35 are pegged graft respectively in the inside of two slot 31, two guide arms 35 think the equal fixedly connected with stopper 34 in top that is close to one side, spacing groove 33 has all been seted up to one side that two slot 31 are close to mutually, two stopper 34 are sliding connection respectively in the inside of two spacing groove 33, the flexible in-process of first spring 32, guide arm 35 slides along the inner wall of slot 31, stopper 34 slides along the inner wall of spacing groove 33, inject hanger plate 38's removal orbit, ensure hanger plate 38 and can only remove on vertical.

Wherein, the inner wall fixedly connected with support column 39 of furnace temperature case 2 bottom, and the top fixedly connected with cutting ferrule 42 of support column 39, the bottom of chromatographic column 12 is cup jointed inside cutting ferrule 42, the top inner wall fixedly connected with second spring 43 of cutting ferrule 42, the bottom fixedly connected with holding piece 40 of second spring 43, the bottom of holding piece 40 bonds and has rubber sheet 44, second spring 43 extrudes holding piece 40 downwards, fix the bottom of chromatographic column 12, strengthen the stability of chromatographic column 12 from the below, rubber sheet 44 plays the cushioning effect between chromatographic column 12 and holding piece 40.

Wherein, the inner wall fixedly connected with electro-magnet 41 at cutting ferrule 40 top, clamping piece 40 adopt the steel material, when needing to take out chromatographic column 12 from cutting ferrule 40, the clamping piece 40 is adsorbed in the electro-magnet 41 circular telegram, mentions clamping piece 40 from the top outer wall department of chromatographic column 12, and second spring 43 further compresses this moment, and when needing centre gripping chromatographic column 12 once more, 41 deenergizations of electro-magnet, second spring 43 can promote clamping piece 40 downwards, accomplishes the centre gripping to chromatographic column 12.

Wherein, two location strips 5 of 4 one sides fixedly connected with of chamber door, and two location strips 5 all adopt the steel material, two adaptation in the adsorption strip 9 of location strip 5 of one side fixedly connected with of furnace temperature case 2, and adsorption strip 9 adopts the permanent magnet material, and two adsorption strips 9 are laminated respectively in two location strips 5 after closing the chamber door, and supplementary chamber door 4 stably closes isolated chamber door 4, optimizes the sealed effect of chamber door 4.

The working principle is as follows: carrier gas and a sample enter a chromatographic column 12 from an injection port 8, the sample detection is completed together with a detector 11, a furnace temperature box 2 realizes the temperature variable adjustment through a heater 10, the chromatographic column 12 can generate irregular shaking under the influence of temperature and internal airflow, a separator 7 separates the chromatographic column 12 into two sections through a mechanical clamping component, a section close to the injection port 8 is provided with a margin, the margin can ensure that the chromatographic column 12 cannot be tightened when being cooled, the injection port 8 is prevented from being separated from the chromatographic column 12, when the main body part of the chromatographic column 12 shakes, the part of the chromatographic column between the mechanical clamping component and the injection port 8 can be prevented from being drawn, the tight connection of the injection port 8 and one end of the chromatographic column 12 is maintained, the gas leakage phenomenon is ensured not to be generated, the box door 4 is closed after the detection is started, the environmental temperature of the furnace temperature box 2 rises, the thermal adaptive clamping component automatically fills the inside a separation groove 22, further improving the stability between the chromatographic column 12 and the sample inlet 8.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.