1. An apparatus for continuous spiral baffled substrate processing, the apparatus comprising a spin base, a roll-on-roll assembly, and a drive assembly, wherein:

the rolling assembly comprises a double-layer rolling cylinder and a plurality of single-layer rolling cylinders which are arranged above the rotating base, the double-layer rolling cylinder and the single-layer rolling cylinders are annularly arranged, two ends of each of the double-layer rolling cylinder and the single-layer rolling cylinders are respectively provided with a height adjusting mechanism, and the arrangement heights of the double-layer rolling cylinder and the single-layer rolling cylinders are sequentially reduced;

the upper surface of the rotary base is provided with a fixing piece for fixing one end of the continuous spiral baffling substrate;

the driving assembly is fixed on the lower surface of the rotating base and used for driving the rotating base to rotate.

2. The apparatus according to claim 1, wherein the height adjusting mechanism comprises a plurality of hydraulic rods, and a height control unit, wherein both ends of the double-layer rolling cylinders and each single-layer rolling cylinder are arranged at the ends of the hydraulic rods, and the height control unit is used for controlling the heights of the plurality of hydraulic rods so as to realize independent or combined control of the plurality of hydraulic rods.

3. The apparatus of claim 2, wherein one end of the double-layer roller and each single-layer roller are coupled to the hydraulic rod and the other end of the double-layer roller and each single-layer roller are detachably coupled to the hydraulic rod, or both ends of the double-layer roller and each single-layer roller are detachably coupled to the hydraulic rod.

4. The apparatus of claim 1, further comprising a heating assembly for heating the continuous spiral baffle substrate.

5. The apparatus of claim 4, wherein the heating assembly is a laser heater or an infrared heater.

6. The apparatus of claim 1, wherein the drive assembly is one of a gear, a belt, or a shaft.

7. The apparatus of claim 1, wherein the number of double-layer roller cylinders is two, and two of the double-layer roller cylinders are arranged next to each other and have the same height.

8. The apparatus of claim 1, wherein the number of the single layer roller cylinders is 3, the double layer roller cylinders and the 3 single layer roller cylinders are uniformly arranged in a ring shape, the height of the double layer roller cylinders is H, and the height of the 3 single layer roller cylinders is 3/4H, 1/2H and 1/4H in sequence.

9. A continuous spiral deflection substrate to be processed using the apparatus for continuous spiral deflection substrate processing according to any one of claims 1 to 8, wherein the inner diameter of the substrate is 100 to 500mm, and the ratio of the outer diameter to the inner diameter of the substrate is 2: 1 to 10: 1.

10. A heat exchanger using the continuous spiral baffle substrate of claim 9, comprising a plurality of the continuous spiral baffle substrates, wherein the plurality of the continuous spiral baffle substrates are connected end to end by riveting.

Background

The heat exchanger is one of important equipment widely used in the industrial fields of petrochemical industry, energy power, metallurgy, biological pharmacy and the like, and the shell-and-tube heat exchanger is the largest in the total amount of heat exchange equipment due to the characteristics of simple structure, small processing difficulty coefficient and the like, mainly comprises a heat tube bundle and an outer shell, and exchanges heat through the wall surface of the tube bundle.

The spiral baffle heat exchanger is a new type heat exchanger which can replace traditional bow-shaped baffle heat exchanger, and adopts continuous spiral baffle plate or discontinuous spiral baffle plate to make shell pass fluid flow forward in the form of spiral flow. The spiral flow enhances the turbulence degree of the fluid, enhances the heat transfer and reduces the back mixing of the fluid in the heat exchanger; the resistance of the inner shape body of the heat exchanger is reduced, the pressure drop of the shell side is reduced, the flow dead zone between baffle plates is eliminated by the spiral flow, and the pressure drop of the shell side is reduced. However, the continuous spiral baffle plate has great difficulty in processing and installation, and for example, the opening angles of the continuous spiral baffle plate at each heat exchange tube are different, so that the continuous spiral baffle plate is difficult to install. The current research shows that in order to solve the problem of leakage flow, the most effective mode is to adopt a continuous spiral baffle plate, chinese patent CN202010558873X proposes a stretching method to process a continuous spiral baffle base plate, but the base plate manufactured by the method has many problems of serious deformation of the inner arc side, warping of the spiral surface, inconsistent inner and outer heights, low yield and the like, and has a high requirement on the uniformity of the material, and if the material is not uniform, for example, impurities are doped, the material will break, resulting in that the flow in the heat exchanger greatly deviates from the design. Therefore, it is necessary to design a device capable of processing the continuous spiral baffling base plate to realize the processing of the high-performance continuous spiral baffling base plate.

Disclosure of Invention

Aiming at the defects or the improvement requirements of the prior art, the invention provides the continuous spiral baffling base plate, the device for processing the same and the heat exchanger, which can realize the design of the continuous spiral baffling base plate with any thread pitch, and have simple structure and high precision.

To achieve the above objects, according to one aspect of the present invention, there is provided an apparatus for continuous spiral baffled substrate processing, the apparatus comprising a rotating base, a rolling assembly and a drive assembly, wherein: the rolling assembly comprises a double-layer rolling cylinder and a plurality of single-layer rolling cylinders which are arranged above the rotating base, the double-layer rolling cylinder and the single-layer rolling cylinders are annularly arranged, two ends of each of the double-layer rolling cylinder and the single-layer rolling cylinders are respectively provided with a height adjusting mechanism, and the arrangement heights of the double-layer rolling cylinder and the single-layer rolling cylinders are sequentially reduced; the upper surface of the rotary base is provided with a fixing piece for fixing one end of the continuous spiral baffling substrate; the driving assembly is fixed on the lower surface of the rotating base and used for driving the rotating base to rotate.

Preferably, the height adjusting mechanism comprises a plurality of hydraulic rods and a height control unit, wherein two ends of the double-layer rolling cylinders and two ends of each single-layer rolling cylinder are arranged at the ends of the hydraulic rods, and the height control unit is used for controlling the heights of the plurality of hydraulic rods so as to realize independent or combined control of the plurality of hydraulic rods.

Preferably, one end of each of the double-layer rolling cylinders and the single-layer rolling cylinders is connected with the hydraulic rod through a shaft, and the other end of each of the double-layer rolling cylinders and the single-layer rolling cylinders is detachably connected with the hydraulic rod, or both ends of each of the double-layer rolling cylinders and the single-layer rolling cylinders are detachably connected with the hydraulic rod.

Preferably, the apparatus further comprises a heating assembly for heating the continuous spiral baffling substrate.

Preferably, the heating component is a laser heater or an infrared heater.

Preferably, the drive assembly is one of a gear, a belt or a shaft.

Preferably, the number of the double-layer rolling cylinders is two, and the two double-layer rolling cylinders are adjacently arranged next to each other and have the same height.

Preferably, the number of the single-layer roller cylinders is 3, the double-layer roller cylinders and the 3 single-layer roller cylinders are uniformly arranged in a ring shape, the height of the double-layer roller cylinders is H, and the heights of the 3 single-layer roller cylinders are 3/4H, 1/2H and 1/4H in sequence.

According to another aspect of the present invention, there is provided a continuous spiral baffling substrate processed using the apparatus for processing a continuous spiral baffling substrate, the substrate having an inner diameter of 100 to 500mm, and a ratio of the outer diameter to the inner diameter of 2: 1 to 10: 1.

According to a further aspect of the present invention, there is provided a heat exchanger using the above-mentioned continuous spiral baffle base plate, comprising a plurality of the continuous spiral baffle base plates, which are connected end to end by riveting.

In general, compared with the prior art, the continuous spiral baffling substrate, the device for processing the same and the heat exchanger provided by the invention have the following beneficial effects:

1. this application adopts highly to reduce in proper order double-deck roller and a plurality of individual layer roller in proper order can realize the even change of base plate camber, and then realizes that the base plate is from dull and stereotyped to helical structure's mild transition, and the manufacturing process is soft, local tensile stress can not appear, is applicable to multiple material, and is high to the composition tolerance of material, very big expansion the range of application.

2. The heights of the double-layer rolling cylinders and the single-layer rolling cylinders are controlled through the hydraulic rod, one of the double-layer rolling cylinders and the single-layer rolling cylinders can provide large torque to meet the manufacturing requirement of a high-hardness substrate, and the other can achieve accurate height control.

3. One end of each of the double-layer rolling cylinders and one end of each of the single-layer rolling cylinders are connected with the hydraulic rod in a shaft mode, the other end of each of the double-layer rolling cylinders and the other end of each of the single-layer rolling cylinders are detachably connected with the hydraulic rod, or the two ends of each of the double-layer rolling cylinders and the two ends of each of the single-layer rolling cylinders are detachably connected with the hydraulic rod, and therefore rapid mounting and dismounting of the substrate are achieved.

4. The heating assembly can heat the substrate, so that the substrate to be treated is softened to realize bending and shaping more quickly, the manufacturing efficiency is improved, and the method is very suitable for industrial application.

5. The number of the double-layer rolling cylinders is preferably 2, the number of the single-layer rolling cylinders is preferably 3, the requirement of substrate screwing can be met, the device is not too complex, and the economical efficiency is good.

6. The heat exchanger of this application adopts a plurality of continuous spiral baffling base plates to form through the riveting and does not have the hourglass flow phenomenon, and unit pressure drop heat transfer coefficient obviously risees, and the heat transfer effect is high.

Drawings

FIG. 1 is an oblique view of an apparatus for continuous spiral baffled substrate processing;

FIG. 2 is a front view of an apparatus for continuous spiral baffling substrate processing;

FIG. 3 is a top view of a continuous spiral baffle baseplate being processed using the apparatus for continuous spiral baffle baseplate processing;

FIG. 4 is a front view of a continuous spiral baffle baseplate being processed using the apparatus for continuous spiral baffle baseplate processing;

FIG. 5 is a graphical representation of heat transfer coefficient per pressure drop for a heat exchanger employing successive spiral baffle substrates.

The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:

100-a rotating base;

200-rolling assembly:

210a, 210 b-double layer roller; 220-single layer roller; 230-a height adjustment mechanism; 231-a height control unit;

300-a drive assembly;

a-a circular ring substrate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and 2, the present invention provides an apparatus for continuous spiral baffling substrate processing, which includes a spin base 100, a rolling assembly 200, and a driving assembly 300.

The rotary base 100 is provided at an upper surface thereof with a fixing member for fixing the continuous spiral baffle substrate. The fixing piece is detachably connected with the continuous spiral baffling base plate, for example, screwed or clamped.

The driving assembly 300 is fixed on the lower surface of the rotating base 100 and is used for driving the rotating base 100 to rotate, and may be a gear, a belt, a rotating shaft, or the like, and is driven by a motor or manually.

The rolling assembly 200 comprises double-layer rolling cylinders 210a and 210b and a plurality of single-layer rolling cylinders 220, which are arranged above the rotary base, wherein the double-layer rolling cylinders 210a and 210b and the single-layer rolling cylinders 220 are annularly arranged, two ends of the double-layer rolling cylinders 210a and 210b and the single-layer rolling cylinders 220 are respectively provided with a height adjusting mechanism 230, and the arrangement heights of the double-layer rolling cylinders 210a and 210b and the single-layer rolling cylinders 220 are sequentially reduced.

It is further preferable that the height adjusting mechanism 230 includes a plurality of hydraulic rods at which both ends of the double-layer rolling cylinders and each single-layer rolling cylinder are disposed, and a height control unit 231 for controlling the heights of the plurality of hydraulic rods to implement independent or combined control of the plurality of hydraulic rods.

Further preferably, one end of each of the double-layer rolling cylinders and the single-layer rolling cylinders is connected with the hydraulic rod through a shaft, so that the double-layer rolling cylinders or the single-layer rolling cylinders can rotate on the hydraulic rod, the other end of each of the double-layer rolling cylinders or the single-layer rolling cylinders is detachably connected with the hydraulic rod, or the two ends of each of the double-layer rolling cylinders and the two ends of each of the single-layer rolling cylinders are detachably connected with the hydraulic rod, so that the to-be-processed substrate can be loaded and unloaded conveniently.

The double-layer rolling cylinders and the single-layer rolling cylinders are uniformly arranged in a ring shape. In the embodiment of the disclosure, the number of the double-layer rolling cylinders is two, two the double-layer rolling cylinders are adjacently and closely arranged and have the same height, the number of the single-layer rolling cylinders is 3, the double-layer rolling cylinders and the 3 single-layer rolling cylinders are uniformly arranged in an annular shape, the height of the double-layer rolling cylinders is H, and the heights of the 3 single-layer rolling cylinders are 3/4H, 1/2H and 1/4H in sequence.

The device also comprises a heating component used for heating the continuous spiral baffling substrate. The heating component is a laser heater or an infrared heater, and the heat flux density can be adjusted by adjusting the power of the laser heater or the infrared heater in the application process, so that the substrates with different performances are softened, the substrates are easier to form, and the forming efficiency and the forming precision are improved.

The method of using the apparatus for processing a continuous spiral baffled substrate in the present application is described as follows, taking two double-layer rolling cylinders and 3 single-layer rolling cylinders as an example:

s1: cutting a circular base plate a which is used for being processed into a continuous spiral baffling base plate along the radial direction, wherein one side of the cut is fixed on the surface of a rotary base through a fixing piece, and the other side of the cut is arranged in the middle of a double-layer rolling cylinder;

in order to ensure the processing quality, the inner diameter of the annular substrate a is 100-500 mm, and the ratio of the outer diameter to the inner diameter is 2: 1-10: 1.

S2: adjusting the heights of the first double-layer roller and the plurality of single-layer rollers to enable the heights of the first double-layer roller and the plurality of single-layer rollers to be sequentially reduced; the height of the second double-layer rolling cylinder can be roughly adjusted in advance according to the distance between the second double-layer rolling cylinder and the lifting height, and then fine adjustment is carried out in the rotation process of the base;

s3: the drive assembly is actuated to rotate the spin base to obtain a continuous spiral baffle base plate, as shown in fig. 3 and 4.

And connecting the two ends of the continuous spiral baffling base plates in a riveting mode to obtain the continuous baffling plate which can be used in the heat exchanger. For example, rectangular openings can be formed on two sides of a notch of the substrate, holes can be radially punched, connecting plates are manufactured, and a riveting process is adopted to connect a plurality of spiral baffling substrates into a whole.

This application on the other hand provides a continuous spiral baffling base plate of adopting above-mentioned processingequipment to process, the internal diameter of base plate is 100 ~ 500mm, the external diameter of base plate and the internal diameter ratio are 2: 1 ~ 10: 1.

Another aspect of this application provides an adopt above-mentioned heat exchanger of continuous spiral baffling base plate, and it includes a plurality of continuous spiral baffling base plate, it is a plurality of continuous spiral baffling base plate is through two liang of end connection of riveted mode.

If the diameter of the heat exchanger is 200mm, the bow-shaped baffle plate is adopted within 100mm of the inner diameter, the continuous spiral baffle base plate is adopted within 100 mm-200 mm, the heat exchange tube of DN19mm is adopted and the common triangular arrangement is adopted, and if the inner diameter or the outer diameter is reduced, the tube distribution is difficult, and the heat exchange effect is achieved. Therefore, it is not recommended to reduce the inner diameter any more, and the lower limit of the inner diameter is set to 100mm, and the upper limit of the ratio of the inner diameter to the outer diameter is set to 1: 2.

if the diameter of the heat exchanger is designed to be 5000mm (generally, the diameter of 2400mm belongs to a large heat exchanger, and the heat exchanger with the diameter larger than 2400mm is adopted in a smaller way), an arch-shaped baffle plate is adopted within 500mm of the inner diameter, and a continuous spiral baffling base plate is adopted within 500mm-5000 mm. If a smaller helix angle of 20 degrees is adopted, the medium diameter expansion of the continuous spiral baffling baseplate reaches 6.5 percent, and the inner diameter expansion of the continuous spiral baffling baseplate reaches 32.5 percent. If the heat exchanger adopts 304 stainless steel (ductility is 40%), the deformation amount at the inner diameter of the continuous spiral baffling substrate is large, the thinning is serious, and therefore the processing quality and the strength are difficult to guarantee. Therefore, the upper limit of the inner diameter is set to 500mm, and the lower limit of the ratio of the inner diameter to the outer diameter is set to 1: 10.

if the diameter of the heat exchanger is 2400mm, an arch-shaped baffle plate is adopted within 400mm of the inner diameter, a continuous spiral baffle base plate is adopted within 400mm-2400mm, and the inner diameter ratio and the outer diameter ratio are 1: 6. the spiral angle is 25 degrees, the medium diameter extension of the continuous spiral baffling baseplate reaches 10 percent, and the inner diameter extension of the continuous spiral baffling baseplate reaches 30 percent. The heat transfer efficiency ratio of the heat exchanger at this time was 1.486, and 97.2% of the limit heat transfer efficiency ratio was reached. The heat transfer efficiency can be effectively improved, and the processing quality is ensured.

The heat exchanger adopting the continuous spiral baffling base plate improves the leakage phenomenon, and the unit pressure drop heat transfer coefficient of the heat exchanger is obviously higher than that of the arch baffle heat exchanger and is about 1.5 times of that of the arch baffle heat exchanger. As shown in fig. 5, it can be seen that when the inner/outer diameter ratio is 1: 2, the heat exchange coefficient of the combined heat exchanger with the continuous spiral baffling base plate outside and the arch baffle plates inside is 1.375 times that of a pure arch baffle plate heat exchanger, 1: at 10, 1.495 is close to the limit value of 1.5.

To sum up, the application provides a continuous spiral baffling base plate, be used for its device and heat exchanger of processing, can realize the design of the continuous spiral baffling base plate of arbitrary pitch, simple structure, the precision is high.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.