High-temperature cooling device

Abstract

The invention relates to a high-temperature cooling device, belongs to the technical field of high-temperature cooling, and solves the problems of thermal expansion of high-temperature and ultra-high-temperature cooling and low reliability of frequent start and stop of the high-temperature cooling device in the prior art. The device comprises a shell pass shell; the shell pass shell comprises an inner cavity and an outer cavity, the inner wall of the outer cavity of the shell pass shell is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell pass shell; a plurality of tube bundles are arranged in an inner cavity of the shell pass shell; wherein each tube bundle comprises a first tube pass and a second tube pass; high-temperature fluid flows from the high-temperature fluid inlet to the high-temperature fluid outlet through the inner cavity of the shell pass shell; and low-temperature fluid flows in through a low-temperature fluid inlet of the outer cavity at the upper part of the shell pass shell, and flows to a low-temperature fluid outlet of the outer cavity at the upper part of the shell pass shell through the first tube pass, the second tube pass and the outer cavity of each tube bundle.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling devices, and in particular to a high-temperature cooling device. Background Art

[0002] When high temperature environments are involved in industries such as power, air conditioning, heat recovery, nuclear energy, petroleum and petrochemicals, aerospace, etc., there are strict requirements for cooling high temperature fluids to low temperature environments or discharge environments required by other process systems or equipment, especially supercritical ultra-high temperature steam in thermal power plants, ultra-high temperature gas emissions from aircraft engines and rocket engines, and high temperature fluids in nuclear energy systems.

[0003] Traditional high-temperature cooling processes and devices mainly use shell and tube heat exchangers or ordinary air-cooled heat exchangers to cool high-temperature fluids to low-temperature fluids, and the operating temperature is strictly limited. However, shell and tube heat exchangers have large pressure losses on the high-temperature and low-temperature sides of the heat exchange process, and ordinary air-cooled heat exchangers have disadvantages such as poor reliability of high-temperature heat exchange, and are prone to temperature stress and other problems, which are not conducive to long-term operation of the system or frequent start-stop conditions, and cannot meet the requirements of high or ultra-high temperature environments for pressure loss and high reliability. Summary of the invention

[0004] In view of the above analysis, an embodiment of the present invention aims to provide a high temperature cooling device to solve the problems of thermal expansion of high temperature and ultra-high temperature cooling, frequent start and stop and low reliability existing in existing high temperature cooling devices.

[0005] The embodiment of the present invention provides a high-temperature cooling device, comprising a shell-side shell; the shell-side shell comprises an inner cavity and an outer cavity, the inner wall of the outer cavity of the shell-side shell is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell-side shell; a plurality of tube bundles are arranged in the inner cavity of the shell-side shell; wherein each of the tube bundles comprises a first tube side and a second tube side;

[0006] The high temperature fluid flows from the high temperature fluid inlet to the high temperature fluid outlet through the inner cavity of the shell side shell;

[0007] The low temperature fluid flows in through the low temperature fluid inlet of the upper outer cavity of the shell side shell, and flows through the first tube side, the second tube side and the outer cavity of each tube bundle to the low temperature fluid outlet of the upper outer cavity of the shell side shell.

[0008] Based on the further improvement of the above solution, the tube bundle further includes a first upper water tank and a second upper water tank;

[0009] One end of the first tube pass is communicated with the upper outer cavity of the shell shell through a first upper water tank, and one end of the second tube pass is communicated with the upper outer cavity of the shell shell through a second upper water tank.

[0010] Based on the further improvement of the above solution, the tube bundle further includes a lower water tank; the other ends of the first tube pass and the second tube pass are both connected through the lower water tank.

[0011] Based on the further improvement of the above solution, the tube bundle also includes a first flexible connecting pipe fitting and a second flexible connecting pipe fitting; the first upper water tank is connected to the upper outer cavity of the shell-side shell through the first flexible connecting pipe fitting, and the second upper water tank is connected to the upper outer cavity of the shell-side shell through the second flexible connecting pipe fitting.

[0012] Based on the further improvement of the above solution, the tube bundle also includes a high-temperature fluid isolation plate; the high-temperature fluid isolation plate is arranged between the first upper water tank and the second upper water tank.

[0013] Based on the further improvement of the above scheme, a plurality of flow partitions are arranged inside the outer cavity of the shell side shell, and each flow partition corresponds to each tube bundle one by one; wherein the position of the flow partition corresponds to the position of the high-temperature fluid isolation plate in the corresponding tube bundle.

[0014] Based on a further improvement of the above solution, the high temperature fluid inlet and the low temperature fluid inlet are arranged on the same side of the high temperature cooling device, and the high temperature fluid outlet and the low temperature fluid outlet are both arranged on the other side.

[0015] Based on the further improvement of the above solution, the tube pass includes multiple heat exchange tubes.

[0016] Based on the further improvement of the above scheme, the first upper water tank and the second upper water tank in each of the tube bundles have the same structure, and both include a fixed tank, a floating tank, a first elastic connecting pipe and a plurality of second elastic connecting pipes;

[0017] The fixed box is fixedly arranged between the high-temperature fluid isolation plates on both sides, the fixed box is connected to the floating box through the elastic connecting pipe, and the floating box is connected to each heat exchange tube through each second elastic connecting pipe; each heat exchange tube corresponds to each second elastic connecting pipe one by one.

[0018] Based on the further improvement of the above scheme, sliders are provided on both sides of the floating box, and the high-temperature fluid isolation plates on both sides are provided with vertical slide grooves, the slide grooves are adapted to the sliders, and the floating box can move longitudinally along the corresponding slide grooves through the sliders on both sides.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] A high-temperature cooling device provided by the present invention comprises a shell-side shell, the shell-side shell comprises an inner cavity and an outer cavity, the inner wall of the outer cavity of the shell-side shell is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell-side shell; a plurality of tube bundles are arranged in the inner cavity of the shell-side shell, each tube bundle comprises a first tube side and a second tube side, in the device, a high-temperature fluid flows from a high-temperature fluid inlet to a high-temperature fluid outlet through the inner cavity of the shell-side shell, a low-temperature fluid flows in through a low-temperature fluid inlet of an upper outer cavity of the shell-side shell, and flows to a low-temperature fluid outlet of an upper outer cavity of the shell-side shell through the first tube side, the second tube side and the outer cavity of each tube bundle, so as to form a multi-flow, one-end fixed, one-end flexible high-temperature cooling device, adopting an upper liquid inlet and upper liquid outlet mode, which is conducive to making the heat exchange tube in contact with the high-temperature fluid be filled with coolant in real time, avoiding the occurrence of a liquid-free area, preventing the heat exchange tube from being burned by high temperature, meeting the use requirements or emission requirements of other process systems, having high reliability and stability, being conducive to use in high-temperature environments such as power, air conditioning, heat recovery, nuclear energy, petroleum and petrochemical, aerospace, etc., and reducing the use and maintenance costs of the system.

[0021] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0023] Figure 1 A schematic diagram of the structure of a high-temperature cooling device provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a vertical cross-section of a water tank provided in an embodiment of the present invention;

[0025] Figure 3 A schematic side cross-sectional view of a water tank provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a horizontal cross-section of a water tank provided in an embodiment of the present invention;

[0027] Reference numerals:

[0028] 1-shell shell; 2-tube bundle; 21-first tube side; 22-second tube side; 23-first upper water tank; 24-second upper water tank; 25-lower water tank; 26-first flexible connecting pipe; 27-second flexible connecting pipe; 28-high-temperature fluid isolation plate; 29-flow isolation plate; 211-heat exchange tube; 231-floating tank; 232-fixed tank; 233-first elastic connecting pipe; 234-second elastic connecting pipe; 2311-slider; 281-slide. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0030] A specific embodiment of the present invention discloses a high temperature cooling device, such as Figure 1 As shown, it comprises a shell-side shell 1; the shell-side shell 1 comprises an inner cavity and an outer cavity, the inner wall of the outer cavity of the shell-side shell is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell-side shell 1; a plurality of tube bundles 2 are arranged in the inner cavity of the shell-side shell 1; wherein each of the tube bundles 2 comprises a first tube side 21 and a second tube side 22;

[0031] The high-temperature fluid flows from the high-temperature fluid inlet to the high-temperature fluid outlet through the inner cavity of the shell side shell 1;

[0032] The low-temperature fluid flows in through the low-temperature fluid inlet of the upper outer cavity of the shell side shell 1, and flows through the first tube side 21, the second tube side 22 and the outer cavity of each tube bundle 2 to the low-temperature fluid outlet of the upper outer cavity of the shell side shell 1.

[0033] It can be understood that the high-temperature cooling device in this embodiment can be used to cool a high-temperature or ultra-high-temperature fluid to a low-temperature fluid; the low-temperature fluid in the high-temperature cooling device adopts an upper liquid inlet and upper liquid outlet method, which is conducive to filling each tube bundle 2 in contact with the high-temperature fluid with coolant in real time, preventing the low-temperature fluid side from having cavities due to pressure fluctuations or flow, that is, avoiding the occurrence of liquid-free areas, thereby causing the tube-side heat exchange tubes to be burned by the high-temperature fluid.

[0034] Specifically, the number of tube passes is determined based on the heat exchange amount, outlet temperature, and pressure loss. The greater the heat exchange amount and the lower the outlet temperature, the greater the number of tube passes.

[0035] During implementation, the tube pass includes a plurality of heat exchange tubes.

[0036] During implementation, the tube bundle 2 further includes a first upper water tank 23 and a second upper water tank 24;

[0037] One end of the first tube side 21 is communicated with the upper outer cavity of the shell side casing 1 through a first upper water tank 23 , and one end of the second tube side 22 is communicated with the upper outer cavity of the shell side casing 1 through a second upper water tank 24 .

[0038] During implementation, the tube bundle 2 further includes a lower water tank 25; the other ends of the first tube side 21 and the second tube side 22 are both connected through the lower water tank 25. The lower water tank is arranged at the lower part of the inner cavity of the shell side.

[0039] It can be understood that the fluids in each heat exchange tube in the tube path are collected and flowed through the upper water tank and the lower water tank 25, and the fluids are integrated, which is more conducive to uniform fluid temperature.

[0040] During implementation, the tube bundle 2 also includes a first flexible connecting pipe 26 and a second flexible connecting pipe 27; the first upper water tank 23 is connected to the outer cavity of the shell-side shell 1 through the first flexible connecting pipe 26, and the second upper water tank 24 is connected to the outer cavity of the shell-side shell 1 through the second flexible connecting pipe 27.

[0041] During implementation, the tube bundle 2 further includes a high-temperature fluid isolation plate 28 ; the high-temperature fluid isolation plate 28 is disposed between the first header water tank 23 and the second header water tank 24 .

[0042] It is understandable that due to the flexible connecting pipes, there are uncooled flow channels in the upper part, so the upper tube box part is sealed with a high-temperature fluid baffle. In addition, because the tube bundle has thermal displacement, thermal compensation is required, and thermal compensation requires a certain amount of space. This space will cause the high-temperature fluid to flow to the outlet side without heat exchange, so it is necessary to add a fluid baffle to block the flow.

[0043] Preferably, the first upper water tank 23 and the second upper water tank 24 have the same structure. Figure 2 As shown, the upper water tank includes a fixed box 232, a floating box 231, a first elastic connecting tube 233 and a plurality of second elastic connecting tubes 234; the fixed box 231 is fixedly arranged between the high-temperature fluid isolation plates 28 on both sides, the fixed box 232 is connected to the floating box 231 through the elastic connecting tube 233, and the floating box 231 is connected to the heat exchange tube 211 through the second elastic connecting tube 234; each heat exchange tube corresponds to each second elastic connecting tube one by one.

[0044] It can be understood that the floating box 231 can float through the first elastic connecting tube 233 and the second elastic connecting tube 234, which can release the thermal displacement of the structure, reduce structural stress, extend the service life, improve the reliability of the device, and reduce maintenance costs.

[0045] Furthermore, sliders 2311 are provided on both sides of the floating box 231, and the high-temperature fluid isolation plates 28 on both sides are provided with vertical slide grooves 281, the slide grooves 281 are adapted to the sliders 2311, and the floating box 231 can move longitudinally along the corresponding slide grooves 281 through the sliders 2311 on both sides, thereby ensuring that the movement of the floating box 231 is smooth and controllable.

[0046] Furthermore, if Figure 3 and Figure 4 As shown, the length of the chute 281 provided on the high-temperature fluid isolation plate 28 is less than the height of the floating box 231, and the width is less than the width of the floating box 231, so as to ensure that the floating box 231 can cover the chute 281 during movement, and the sealing of the structure can be ensured. It can be understood that the high-temperature fluid isolation plate 28 may be provided with upper water tanks on both sides, so the high-temperature fluid isolation plate 28 may be provided with chute on both sides.

[0047] Furthermore, sealing plates are fixedly arranged on the bottom surfaces of the high-temperature fluid isolation plates 28 on both sides of the upper water tank, and each heat exchange tube is connected with the second elastic connecting tube 234 after passing through the sealing plate, so that the sealing performance of the structure can be further ensured.

[0048] Furthermore, the first elastic connecting tube 233 and the second elastic connecting tube 234 are made of metal bellows.

[0049] Furthermore, the slider adopts an "I"-shaped slider, which can more effectively ensure the sealing.

[0050] During implementation, a plurality of flow partitions 29 are arranged inside the outer cavity of the shell side shell, and each flow partition 29 corresponds to each tube bundle 2 one by one; wherein the position of the flow partition 29 corresponds to the position of the high temperature fluid isolation plate 28 in the corresponding tube bundle.

[0051] It is understandable that the shell side casing 1 needs to be filled with cooling fluid for high temperature protection. By using the shell side casing 1 as the flow channel of the tube side, high temperature protection can be achieved and the cost of introducing cooling fluid separately can be reduced.

[0052] During implementation, the high-temperature fluid inlet and the low-temperature fluid inlet are arranged on the same side of the high-temperature cooling device, and the high-temperature fluid outlet and the low-temperature fluid outlet are arranged on the other side.

[0053] Specifically, each heat exchange tube in a set number of tube passes starting from the outlet side of the device is a finned tube, and each heat exchange tube in other tube passes in the device is a plain tube.

[0054] It can be understood that in the tube pass close to the high-temperature fluid inlet of the shell shell 1, a bare tube is used as the heat exchange tube to prevent the fin tube or other tubes that increase the heat exchange area from being ablated; when the fluid temperature on the high-temperature side drops to the ambient temperature that the fin tube or other heat exchange tubes that can increase the heat exchange area can withstand, the fin tube can be used as the heat exchange element in the subsequent tube pass. This arrangement is beneficial to increase the heat exchange area on the high-temperature side and reduce the spatial size of the cooler.

[0055] Preferably, each heat exchange tube in the tube path is made of stainless steel.

[0056] It can be understood that the device in this embodiment is a multi-flow, one-end fixed, one-end flexible high-temperature cooling device, which has great advantages for application containers with a size greater than 5m.

[0057] Compared with the prior art, the present embodiment provides a high-temperature cooling device including a shell-side shell, the shell-side shell including an inner cavity and an outer cavity, the inner wall of the outer cavity of the shell-side shell is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell-side shell; a plurality of tube bundles are arranged in the inner cavity of the shell-side shell, each tube bundle includes a first tube side and a second tube side, in the device, a high-temperature fluid flows from a high-temperature fluid inlet to a high-temperature fluid outlet through the inner cavity of the shell-side shell, a low-temperature fluid flows in through a low-temperature fluid inlet of an upper outer cavity of the shell-side shell, and flows through the first tube side, the second tube side and the outer cavity of each tube bundle to The low-temperature fluid outlet of the upper outer cavity of the shell side shell forms a multi-flow, one-end fixed, one-end flexible high-temperature cooling device, which adopts the upper liquid inlet and upper liquid outlet method, which is conducive to making the heat exchange tubes in contact with the high-temperature fluid filled with coolant in real time, avoiding the liquid-free area, preventing high temperature from burning the heat exchange tubes, meeting the use requirements or emission requirements of other process systems, with high reliability and stability, and is conducive to use in high-temperature environments such as power, air conditioning, heat recovery, nuclear energy, petroleum and petrochemicals, aerospace, etc., while reducing the use and maintenance costs of the system.

[0058] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A high temperature cooling device, characterized in that: It comprises a shell-side shell; the shell-side shell comprises an inner cavity and an outer cavity, the inner wall of the outer cavity of the shell-side shell is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell-side shell; a plurality of tube bundles are arranged in the inner cavity of the shell-side shell; wherein each of the tube bundles comprises a first tube side and a second tube side; The high temperature fluid flows from the high temperature fluid inlet to the high temperature fluid outlet through the inner cavity of the shell side shell; The low temperature fluid flows in through the low temperature fluid inlet of the upper outer cavity of the shell side shell, and flows through the first tube side, the second tube side and the outer cavity of each tube bundle to the low temperature fluid outlet of the upper outer cavity of the shell side shell.

2. The high temperature cooling device according to claim 1, characterized in that: The tube bundle also includes a first upper water tank and a second upper water tank; One end of the first tube pass is communicated with the upper outer cavity of the shell shell through a first upper water tank, and one end of the second tube pass is communicated with the upper outer cavity of the shell shell through a second upper water tank.

3. The high temperature cooling device according to claim 2, characterized in that: The tube bundle further includes a lower water tank; the other ends of the first tube pass and the second tube pass are both connected through the lower water tank.

4. The high temperature cooling device according to claim 3, characterized in that: The tube bundle also includes a first flexible connecting pipe and a second flexible connecting pipe; the first upper water tank is connected to the upper outer cavity of the shell shell through the first flexible connecting pipe, and the second upper water tank is connected to the upper outer cavity of the shell shell through the second flexible connecting pipe.

5. The high temperature cooling device according to claim 4, characterized in that: The tube bundle further includes a high-temperature fluid isolation plate; the high-temperature fluid isolation plate is arranged between the first header water tank and the second header water tank.

6. The high temperature cooling device according to claim 5, characterized in that: A plurality of flow partitions are arranged inside the outer cavity of the shell side, and each flow partition corresponds to each tube bundle one by one; wherein the position of the flow partition corresponds to the position of the high temperature fluid isolation plate in the corresponding tube bundle.

7. The high temperature cooling device according to claim 6, characterized in that: The high-temperature fluid inlet and the low-temperature fluid inlet are arranged on the same side of the high-temperature cooling device, and the high-temperature fluid outlet and the low-temperature fluid outlet are both arranged on the other side.

8. The high temperature cooling device according to claim 1, characterized in that: The tube pass includes a plurality of heat exchange tubes.

9. The high temperature cooling device according to claim 8, characterized in that: The first upper water tank and the second upper water tank in each of the tube bundles have the same structure, and both include a fixed tank, a floating tank, a first elastic connecting pipe and a plurality of second elastic connecting pipes; The fixed box is fixedly arranged between the high-temperature fluid isolation plates on both sides, the fixed box is connected to the floating box through the elastic connecting pipe, and the floating box is connected to each heat exchange tube through each second elastic connecting pipe; each heat exchange tube corresponds to each second elastic connecting pipe one by one.

10. The high temperature cooling device according to claim 9, characterized in that: Slide blocks are provided on both sides of the floating box, and the high-temperature fluid isolation plates on both sides are provided with vertical slide grooves, the slide grooves are adapted to the slide blocks, and the floating box can move longitudinally along the corresponding slide grooves through the slide blocks on both sides.

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