1. A stall closure protection device for a hydro-generator, comprising a housing (1), characterized in that: the solar water heater is characterized in that a water inlet pipe (2) is fixedly connected to the inside of the shell (1), a direct-emitting lamp (3) is fixedly connected to the inside of the shell (1), a photosensitive assembly (4) is fixedly connected to the inside of the shell (1), a gear (5) is rotatably connected to the inside of the shell (1), a rack bar (6) is slidably connected to the inside of the shell (1), a connecting rod (7) is rotatably connected to the outside of the rack bar (6), a rotating rod (8) is rotatably connected to one end, away from the rack bar (6), of the connecting rod (7), a sealing plate (9) is fixedly connected to the outside of the rotating rod (8), a sleeve rod (10) is fixedly connected to the outside of the water inlet pipe (2), a water spray pipe (11) is fixedly connected to the outside of the water inlet pipe (2), a sealing shell (12) is fixedly connected to the inside of the shell (1), a rotating shaft (13) is rotatably connected to the inside of the sealing shell (12), and a rotating wheel (14) is fixedly connected to the outside of the rotating shaft (13), the outside fixedly connected with fixed column (15) of pivot (13), the outside sliding connection of fixed column (15) has trigger block (16), the inside fixedly connected with polar plate subassembly (17) of sealed shell (12), the inside sliding connection of sealed shell (12) has dielectric plate (18).

2. The stall closure protection device for the hydro-generator according to claim 1, wherein: photosensitive element (4) mainly comprise photosensitive shell, light-passing board, photo resistance, and photosensitive shell fixed connection is in the inside of shell (1), and the light-passing board is inlayed in the outside of photosensitive shell, and photo resistance fixed connection is at the inner wall of photosensitive shell, and photo resistance and light-passing board, the corresponding and specification phase-match in position of shot-light (3).

3. The stall closure protection device for the hydro-generator according to claim 1, wherein: the direct-emitting lamp (3) and the photosensitive assembly (4) form a trigger mechanism, the number of the trigger mechanisms is four, the trigger mechanisms are respectively a first trigger mechanism, a second trigger mechanism, a third trigger mechanism and a fourth trigger mechanism, and all the trigger mechanisms are fixedly connected inside the shell (1).

4. The stall closure protection device for the hydro-generator according to claim 1, wherein: gear rack (6) and gear (5) mesh mutually, and dwang (8) are rotated and are connected in the inside of loop bar (10), and closing plate (9) set up in the inside of inlet tube (2), and closing plate (9) and the corresponding and specification phase-match in position of inlet tube (2), and the one end fixed connection of inlet tube (2) is kept away from in the inside of seal shell (12) in spray pipe (11), and spray pipe (11) are corresponding with runner (14) position.

5. The stall closure protection device for the hydro-generator according to claim 1, wherein: the outside fixed connection of fixed column (15) has spring one, and the one end fixed connection that spring one kept away from fixed column (15) triggers the outside of piece (16), triggers the piece (16) and corresponds and specification phase-match with the position of dielectric plate (18).

6. The stall closure protection device for the hydro-generator according to claim 1, wherein: the electrode plate assembly (17) mainly comprises a positive electrode plate, a negative electrode plate and a second spring, the positive electrode plate and the negative electrode plate are fixedly connected to the inside of the sealed shell (12), the second spring is fixedly connected to the inside of the sealed shell (12), one end, far away from the sealed shell (12), of the second spring is fixedly connected to the outside of the dielectric plate (18), and the dielectric plate (18) corresponds to the positive electrode plate and the negative electrode plate in position and is matched in specification.

7. The stall closure protection device for the hydro-generator according to claim 1, wherein: the gear (5) is electrically connected with a driving power supply, and the dielectric plate (18), the photoresistor and the driving power supply are all electrically connected with the control center.

Background

The generator is a mechanical device which converts energy in other forms into electric energy by using power machines such as a water turbine, a steam turbine, a diesel engine and the like, wherein the water turbine is the power machine which converts the energy of water flow into the electric energy.

Modern water turbine is most installed in the power station, be used for driving the generator electricity generation, in the power station, water in the upper reaches reservoir rushes to the hydraulic turbine under the effect of gravity, it drives the generator electricity generation to promote the rotation of hydraulic turbine runner, because the flood peak of upper reaches reservoir is uncontrollable, the flood peak is the higher output that can make the hydraulic turbine just also big more, the output that can lead to the hydraulic turbine when the flood peak is too high will exceed rated power, can cause the hydraulic turbine to carry out overload operation, and the condition of stall appears in the hydraulic turbine can't be detected to current equipment, will lead to hydraulic turbine life to shorten, current equipment also can't accomplish the hydraulic turbine of stall to adjust the protection, if the long-time overload operation of hydraulic turbine, can lead to the damage of hydraulic turbine internals, need to spend a large amount of manpower and materials to go the maintenance.

Therefore, in response to these problems, a stall closure protection device for a hydro-generator is needed.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a stall interception protection device for a hydraulic generator, which has the advantages of automatically detecting the stall of a water turbine and automatically protecting the stall of the water turbine, and solves the problems that the output power of the water turbine is higher due to the fact that the water head of an upstream reservoir is uncontrollable, the output power of the water turbine is higher when the water head is too high, the output power of the water turbine exceeds the rated power when the water head is too high, the water turbine can be overloaded, the existing equipment cannot detect the stall of the water turbine, the service life of the water turbine can be shortened, the existing equipment cannot adjust and protect the stalled water turbine, if the water turbine is overloaded for a long time, internal accessories of the water turbine can be damaged, and a large amount of manpower and material resources are.

(II) technical scheme

In order to realize the purposes of automatically detecting the stall of the water turbine and automatically protecting the stall of the water turbine, the invention provides the following technical scheme: a stall cutoff protection device for a hydraulic generator comprises a shell, wherein a water inlet pipe is fixedly connected inside the shell, a direct-emitting lamp is fixedly connected inside the shell, a photosensitive assembly is fixedly connected inside the shell, a gear is rotatably connected inside the shell, a toothed bar is slidably connected inside the shell, a connecting rod is rotatably connected outside the toothed bar, one end, away from the toothed bar, of the connecting rod is rotatably connected with a rotating rod, a sealing plate is fixedly connected outside the rotating rod, a sleeve rod is fixedly connected outside the water inlet pipe, a spray pipe is fixedly connected outside the water inlet pipe, a sealing shell is fixedly connected inside the shell, a rotating shaft is rotatably connected inside the sealing shell, a rotating wheel is fixedly connected outside the rotating shaft, a fixing column is fixedly connected outside the rotating shaft, a trigger block is slidably connected outside the fixing column, and an electrode plate assembly is fixedly connected inside the sealing shell, a dielectric plate is slidably attached to the interior of the sealed housing.

Preferably, photosensitive assembly mainly comprises photosensitive shell, light-transmitting board, photo resistance, and photosensitive shell fixed connection is in the inside of shell, and the light-transmitting board is inlayed in the outside of photosensitive shell, and photo resistance fixed connection is at the inner wall of photosensitive shell, and photo resistance and light-transmitting board, the corresponding and specification phase-match in position of shot-light.

Preferably, the direct-emitting lamp and the photosensitive assembly form one triggering mechanism, the number of the triggering mechanisms is four, the triggering mechanisms are respectively a first triggering mechanism, a second triggering mechanism, a third triggering mechanism and a fourth triggering mechanism, and all the triggering mechanisms are fixedly connected inside the shell.

Preferably, the ratch meshes with the gear mutually, and the dwang rotates to be connected in the inside of loop bar, and the closing plate setting is in the inside of inlet tube, and the closing plate is corresponding and the specification phase-match with the position of inlet tube, and the one end fixed connection that the inlet tube was kept away from to the spray pipe is in the inside of sealed shell, and the spray pipe is corresponding with the runner position.

Preferably, the outside fixedly connected with spring one of fixed column, the one end fixed connection that spring one kept away from the fixed column triggers the outside of piece, triggers the piece and the corresponding and specification phase-match in position of dielectric plate.

Preferably, the polar plate subassembly mainly comprises positive plate, negative plate, two springs, and the inside fixedly connected with positive plate, negative plate of sealed shell, the inside fixedly connected with spring two of sealed shell, the one end fixed connection that the sealed shell was kept away from to spring two is in the outside of dielectric plate, and the dielectric plate is corresponding and the specification phase-match with positive plate, negative plate position.

Preferably, the gear is electrically connected with a driving power supply, and the dielectric plate, the photoresistor and the driving power supply are all electrically connected with the control center.

Preferably, the direct lighting lamp is in a normally-on state, and the water turbine is in a stall state when the trigger block collides with the dielectric plate.

(III) advantageous effects

Compared with the prior art, the invention provides a stall closure protection device for a hydraulic generator, which has the following beneficial effects:

1. this a stall protection device that dams for hydraulic generator, through the shell, the seal shell, the apparatus further comprises a rotating shaft, the runner, the fixed column, trigger the piece, the polar plate subassembly, the use of mutually supporting of dielectric plate, in case the stall phenomenon takes place for the hydraulic turbine, need not artifical the detection, automatic operation through above-mentioned mechanism, just can reach the effect of automated inspection hydraulic turbine stall, further make the condition that the stall appears in the hydraulic turbine by automated inspection and the operation of automatic triggering follow-up mechanism, carry out the stall protection to the hydraulic turbine, accord with actual conditions's use more.

2. This a stall protection device that dams for hydraulic generator, through the use of mutually supporting of shell, inlet tube, direct shot-light, photosensitive assembly, gear, ratch, connecting rod, dwang, closing plate, loop bar for behind the hydraulic turbine stall, automatic operation through above-mentioned mechanism just can reach the effect of hydraulic turbine stall automatic protection, further make the hydraulic turbine can not appear the long-time overload condition of operation, protected the inside fitting of the hydraulic turbine, prolonged hydraulic turbine life, reduced the cost of manual maintenance.

Drawings

FIG. 1 is a schematic view of a partial cross-sectional structure of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the connection between the rotating shaft and the rotating wheel according to the present invention;

fig. 4 is a schematic view of the internal structure of the sealing case of the present invention.

In the figure: 1. a housing; 2. a water inlet pipe; 3. a direct-emitting lamp; 4. a photosensitive element; 5. a gear; 6. a rack bar; 7. a connecting rod; 8. rotating the rod; 9. a sealing plate; 10. a loop bar; 11. a water spray pipe; 12. sealing the shell; 13. a rotating shaft; 14. a rotating wheel; 15. fixing a column; 16. a trigger block; 17. a pole plate assembly; 18. a dielectric plate.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a stall cut-off protection device for a hydro-generator comprises a housing 1, a water inlet pipe 2 is fixedly connected inside the housing 1, a direct-emitting lamp 3 is fixedly connected inside the housing 1, a photosensitive assembly 4 is fixedly connected inside the housing 1, the photosensitive assembly 4 mainly comprises a photosensitive shell, a light-transmitting plate and a photosensitive resistor, the photosensitive shell is fixedly connected inside the housing 1, the light-transmitting plate is embedded outside the photosensitive shell, the photosensitive resistor is fixedly connected on the inner wall of the photosensitive shell, the photosensitive resistor corresponds to the light-transmitting plate and the direct-emitting lamp 3 in position and is matched with the specification, the direct-emitting lamp 3 and the photosensitive assembly 4 form a trigger mechanism, the number of the trigger mechanisms is four, namely a first trigger mechanism, a second trigger mechanism, a third trigger mechanism and a fourth trigger mechanism, all the trigger mechanisms are fixedly connected inside the housing 1, a gear 5 is rotatably connected inside the housing 1, shell 1's inside sliding connection has ratch 6, ratch 6's outside is rotated and is connected with connecting rod 7, connecting rod 7 is kept away from ratch 6's one end and is rotated and be connected with dwang 8, dwang 8's outside fixedly connected with closing plate 9, the outside fixedly connected with loop bar 10 of inlet tube 2, through shell 1, inlet tube 2, direct projection lamp 3, photosensitive assembly 4, gear 5, ratch 6, connecting rod 7, dwang 8, closing plate 9, loop bar 10 mutually support the use, make behind the hydraulic turbine stall, automatic operation through above-mentioned mechanism, just can reach the effect of hydraulic turbine stall automatic protection, further make the hydraulic turbine can not appear the long-time overload moving condition, the inside accessory of the hydraulic turbine has been protected, hydraulic turbine life has been prolonged, manual maintenance's cost has been reduced.

Outside fixedly connected with spray pipe 11 of inlet tube 2, the inside fixedly connected with seal shell 12 of shell 1, the inside rotation of seal shell 12 is connected with pivot 13, the outside fixedly connected with runner 14 of pivot 13, ratch 6 meshes with gear 5 mutually, dwang 8 rotates the inside of connecting at loop bar 10, closing plate 9 sets up the inside at inlet tube 2, closing plate 9 and inlet tube 2's the corresponding and specification phase-match in position, the one end fixed connection that inlet tube 2 was kept away from to spray pipe 11 is in the inside of seal shell 12, spray pipe 11 is corresponding with runner 14 position, the outside fixedly connected with fixed column 15 of pivot 13, the outside sliding connection of fixed column 15 has trigger block 16, the inside fixedly connected with polar plate subassembly 17 of seal shell 12, the inside sliding connection of seal shell 12 has dielectric plate 18.

The external of the fixed column 15 is fixedly connected with a first spring, one end of the first spring far away from the fixed column 15 is fixedly connected with the external of the trigger block 16, the trigger block 16 corresponds to the position of the dielectric plate 18 and is matched with the specification, the polar plate component 17 mainly comprises a positive plate, a negative plate and a second spring, the internal of the sealed shell 12 is fixedly connected with the positive plate and the negative plate, the internal of the sealed shell 12 is fixedly connected with the second spring, one end of the second spring far away from the sealed shell 12 is fixedly connected with the external of the dielectric plate 18, the dielectric plate 18 corresponds to the position of the positive plate and is matched with the specification of the negative plate, the gear 5 is electrically connected with a driving power supply, the dielectric plate 18, the photoresistor and the driving power supply are all electrically connected with a control center, the direct lighting lamp 3 is in a normally-on state, the hydraulic turbine is in a stalling state when the trigger block 16 collides with the dielectric plate 18, and passes through the shell 1, the sealed shell 12, Pivot 13, runner 14, fixed column 15, trigger block 16, polar plate subassembly 17, dielectric plate 18 mutually support and use for the turbine need not artifical the detection in case takes place the stall phenomenon, through the automatic operation of above-mentioned mechanism, just can reach the effect of automated inspection turbine stall, further makes the condition that the stall appears in the turbine by automated inspection and the operation of automatic triggering follow-up mechanism, carries out the stall protection to the turbine, accords with actual conditions's use more.

The working principle is as follows: when the flood peak of upper reaches reservoir is too high, rivers flow through inlet tube 2 under the effect of gravity, spray pipe 11 sprays 14 outsides of runner and drives runner 14 overload and rotate, runner 14 rotates and drives pivot 13 and rotate, pivot 13 rotates and drives fixed column 15 and rotates, fixed column 15 rotates and drives trigger block 16 motion and make spring one stretched under the effect of centrifugal force, trigger block 16 motion and dielectric plate 18 produce the collision, dielectric plate 18 moves and makes spring two produce deformation, dielectric plate 18 moves between positive plate and the negative plate and makes the positive plate and the area S that just faces of negative plate change, electric capacity C changes, the expression is as follows:

C＝εS/4πkd

at the moment, the current changes, the control center senses the current changes to control the driving power supply driving gear 5 to rotate, the gear 5 rotates to drive the toothed rod 6 to move, the toothed rod 6 moves to drive the connecting rod 7 to move, the connecting rod 7 moves to drive the rotating rod 8 to rotate, the rotating rod 8 rotates to drive the sealing plate 9 to rotate, when the toothed rod 6 moves to correspond to the position of the direct lamp 3 of the second trigger mechanism, the illumination received by the photosensitive resistor in the photosensitive assembly 4 becomes weak, the resistance value becomes large, the current becomes small, the control center senses the current changes to control the driving power supply to stop driving gear 5, the gear 5 stops moving to stop moving the toothed rod 6, the connecting rod 7, the rotating rod 8 and the sealing plate 9, the sealing plate 9 enables the cross-sectional area of the water flow allowed to pass through in the water inlet pipe 2 to become small, meanwhile, the water flow becomes small, and further enables the rotating speed of the rotating wheel 14 to be reduced, the rotation speed of the rotating wheel 14 is reduced, so that the rotation speed of the rotating shaft 13 is reduced, the triggering block 16 is driven to move under the action of the resilience force of the spring and no longer collides with the dielectric plate 18, and the current is not changed, so that the stall protection is completed.

When the above operation fails to make the resilience of spring i overcome the centrifugal force to drive trigger block 16 to move and no longer collide with dielectric plate 18, then dielectric plate 18 continues to move between the positive and negative plates and makes the facing area S of the positive and negative plates change, and capacitance C changes, as shown in the following expression:

C＝εS/4πkd

the electric current continues to change, control centre senses this kind of current variation and can continue control drive power supply drive gear 5 and rotate, gear 5 rotates and drives rack bar 6 and move when 3 positions of the straight shot-light in with the third trigger mechanism are corresponding, the illumination that the photo resistance received in photosensitive assembly 4 weakens, the resistance grow, the electric current diminishes, control centre senses this kind of current variation and can control drive power supply stop drive gear 5 and move this moment, gear 5 stop motion is made the resilience force of spring one overcome centrifugal force and drive trigger block 16 and move no longer with dielectric plate 18 mutually collision, make the electric current no longer change, accomplish the stall protection.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.