A high temperature cooling device

Abstract

The application relates to a high-temperature cooling device, belonging to the technical field of high-temperature cooling, and solves the problems of thermal expansion, frequent start-stop and low reliability of high-temperature and ultrahigh-temperature cooling in the prior art. The device comprises a shell side shell; the shell side shell comprises an inner cavity and an outer cavity, the inner cavity is provided with a cavity wall, and the outer cavity is provided with an outer wall; 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; 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 into a low-temperature fluid inlet of the outer cavity of the upper part of the shell side shell, flows through the first tube side and the second tube side of each tube bundle and the outer cavity, and flows to a low-temperature fluid outlet of the outer cavity of the upper part of the shell side shell.

Description

Technical Field

[0001] This invention relates to the field of cooling device technology, and more particularly to a high-temperature cooling device. Background Technology

[0002] In industries such as power, air conditioning, heat recovery, nuclear energy, petrochemicals, and aerospace, there are strict requirements for cooling high-temperature fluids to the low-temperature environment or emission environment required by other process systems or equipment when high-temperature environments are involved. This is especially true for supercritical ultra-high temperature steam in thermal power plants, ultra-high temperature exhaust gas from aero engines and rocket engines, and high-temperature fluids in nuclear energy systems.

[0003] Traditional high-temperature cooling processes and devices mainly employ shell-and-tube heat exchangers or ordinary air-cooled heat exchangers to cool high-temperature fluids to low-temperature fluids, with strict limitations on operating temperatures. Shell-and-tube heat exchangers suffer from significant pressure losses on both the high-temperature and low-temperature sides, while ordinary air-cooled heat exchangers exhibit poor reliability at high temperatures. These drawbacks make them prone to temperature stress and unsuitable for long-term operation or frequent start-ups and shutdowns, failing to adequately meet the pressure loss and high reliability requirements of high-temperature or ultra-high-temperature environments. Summary of the Invention

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

[0005] This invention provides a high-temperature cooling device, including a shell-side housing; the shell-side housing includes an inner cavity and an outer cavity, the inner wall of the outer cavity of the shell-side housing is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell-side housing; a plurality of tube bundles are disposed in the inner cavity of the shell-side housing; wherein, each tube bundle includes a first tube pass and a second tube pass;

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

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

[0008] Based on further improvements to the above scheme, the tube bundle also includes a first water tank and a second water tank;

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

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

[0011] Based on further improvements to the above scheme, 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-side shell through the first flexible connecting pipe, and the second upper water tank is connected to the upper outer cavity of the shell-side shell through the second flexible connecting pipe.

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

[0013] Based on the further improvement of the above scheme, multiple baffles are provided inside the outer cavity of the shell side shell, and each baffle corresponds to each tube bundle; wherein, the position of the baffle 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 scheme, the high-temperature fluid inlet and the low-temperature fluid inlet are located on the same side of the high-temperature cooling device, and the high-temperature fluid outlet and the low-temperature fluid outlet are located on the other side.

[0015] Based on further improvements to the above scheme, the tube side includes multiple heat exchange tubes.

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

[0017] The fixed box is fixedly installed between the high-temperature fluid isolation plates on both sides. The fixed box and the floating box are connected through the elastic connecting pipe. The floating box is connected to each heat exchange pipe through each of the second elastic connecting pipes. Each heat exchange pipe corresponds to each of the second elastic connecting pipes.

[0018] Based on the further improvement of the above scheme, sliders are provided on both sides of the floating box, and vertical grooves are provided on both sides of the high-temperature fluid isolation plate. The grooves are adapted to the sliders, and the floating box can move longitudinally along the corresponding grooves by 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] This invention provides a high-temperature cooling device comprising a shell-side housing, which includes an inner cavity and an outer cavity. The inner wall of the outer cavity is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell-side housing. Multiple tube bundles are arranged within the inner cavity of the shell-side housing, each tube bundle including a first tube pass and a second tube pass. In this device, high-temperature fluid flows through the inner cavity of the shell-side housing from the high-temperature fluid inlet to the high-temperature fluid outlet, while low-temperature fluid flows in through the low-temperature fluid inlet of the upper outer cavity of the shell-side housing, flows through the first tube pass, second tube pass, and outer cavity of each tube bundle, and reaches the low-temperature fluid outlet of the upper outer cavity of the shell-side housing. This forms a multi-flow, one-end fixed, one-end flexible high-temperature cooling device. The top-inlet and top-outlet design ensures that the heat exchange tubes in contact with the high-temperature fluid are constantly filled with coolant, avoiding areas without coolant and preventing high-temperature burnout of the heat exchange tubes. It meets the usage requirements or emission requirements of other process systems, exhibits high reliability and stability, and is suitable for use in high-temperature environments such as power, air conditioning, heat recovery, nuclear energy, petrochemicals, and aerospace, while also reducing the system's usage and maintenance costs.

[0021] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0022] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

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

[0024] Figure 2 A schematic vertical cross-sectional view of the upper water tank provided in an embodiment of the present invention;

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

[0026] Figure 4 This is a schematic horizontal cross-sectional view of the upper water tank provided in an embodiment of the present invention;

[0027] Figure label:

[0028] 1-Shell side; 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 fitting; 27-Second flexible connecting pipe fitting; 28-High temperature fluid isolation plate; 29-Baffle plate; 211-Heat exchange tube; 231-Floating box; 232-Fixed box; 233-First elastic connecting pipe; 234-Second elastic connecting pipe; 2311-Slider; 281-Groove. Detailed Implementation

[0029] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form 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 intended to limit the scope of the present invention.

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

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

[0032] The cryogenic fluid flows in through the cryogenic fluid inlet in the upper outer cavity of the shell side 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 cryogenic fluid outlet in the upper outer cavity of the shell side 1.

[0033] It is understood that the high-temperature cooling device in this embodiment can be used to cool high-temperature or ultra-high-temperature fluids to low-temperature fluids. The high-temperature cooling device adopts a top-inlet and top-outlet method for the low-temperature fluid, which is beneficial to ensure that each tube bundle 2 in contact with the high-temperature fluid is filled 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, which would lead to the problem of the tube heat exchange tubes being burned by the high-temperature fluid.

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

[0035] In practice, the tube side includes multiple heat exchange tubes.

[0036] In practice, the tube bundle 2 also includes a first water tank 23 and a second water tank 24;

[0037] One end of the first tube 21 is connected to the upper outer cavity of the shell 1 through the first upper water tank 23, and one end of the second tube 22 is connected to the upper outer cavity of the shell 1 through the second upper water tank 24.

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

[0039] It is understandable that by collecting and circulating the fluids from each heat exchange tube in the tube side through the upper and lower water tanks 25, the fluids are integrated, which helps to make the fluid temperature more uniform.

[0040] In practice, the tube bundle 2 further 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 housing 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 housing 1 through the second flexible connecting pipe 27.

[0041] In practice, the tube bundle 2 also includes a high-temperature fluid isolation plate 28; the high-temperature fluid isolation plate 28 is disposed between the first upper water tank 23 and the second upper water tank 24.

[0042] It is understandable that the upper part of the tube box is blocked by a high-temperature fluid baffle because the flexible connection pipe fittings result in an uncooled flow channel. Furthermore, because the tube bundle has thermal displacement, thermal compensation is required. However, thermal compensation requires a certain amount of space, which can cause the high-temperature fluid to flow to the outlet side without heat exchange. Therefore, it is necessary to add a fluid baffle to impede the flow.

[0043] Preferably, the first upper water tank 23 and the second upper water tank 24 have the same structure, such as... Figure 2 As shown, each upper water tank includes a fixed tank 232, a floating tank 231, a first elastic connecting pipe 233, and multiple second elastic connecting pipes 234. The fixed tank 231 is fixedly installed between the high-temperature fluid isolation plates 28 on both sides. The fixed tank 232 and the floating tank 231 are connected through the first elastic connecting pipe 233, and the floating tank 231 is connected to the heat exchange tube 211 through the second elastic connecting pipe 234. Each heat exchange tube corresponds to each second elastic connecting pipe.

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

[0045] Furthermore, such as Figure 3 and Figure 4As shown, the floating box 231 is provided with sliders 2311 on both sides, and the high-temperature fluid isolation plates 28 on both sides are provided with vertical grooves 281. The grooves 281 are adapted to the sliders 2311, and the floating box 231 can move longitudinally along the corresponding grooves 281 through the sliders 2311 on both sides, which can ensure that the movement of the floating box 231 is stable and controllable.

[0046] Furthermore, the length of the groove 281 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 groove 281 during movement, thus ensuring the airtightness of the structure. It is understood that the high-temperature fluid isolation plate 28 may have water tanks on both sides, so the high-temperature fluid isolation plate 28 may have grooves on both sides.

[0047] Furthermore, sealing plates are fixedly installed on the bottom surface of the high-temperature fluid isolation plates 28 on both sides of the upper water tank. Each heat exchange tube is connected to the second elastic connecting pipe 234 after passing through the sealing plate, which can further ensure the sealing performance of the structure.

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

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

[0050] In practice, a plurality of baffles 29 are provided inside the outer cavity of the shell side, and each baffle 29 corresponds one-to-one with each tube bundle 2; wherein, the position of the baffle 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 separately drawing cooling fluid can be reduced.

[0052] In practice, the high-temperature fluid inlet and the low-temperature fluid inlet are located on the same side of the high-temperature cooling device, while the high-temperature fluid outlet and the low-temperature fluid outlet are located on the other side.

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

[0054] It is understandable that bare tubes are used as heat exchange tubes in the tube side near the high-temperature fluid inlet of shell 1 to prevent finned tubes or other tubes that increase the heat exchange area from being burned. When the temperature of the fluid on the high-temperature side drops to the ambient temperature that finned tubes or other heat exchange tubes that can increase the heat exchange area can withstand, finned tubes can be used as heat exchange elements in the subsequent tube side. This arrangement is beneficial to increase the heat exchange area on the high-temperature side and reduce the space size of the cooler.

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

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

[0057] Compared with the prior art, this embodiment provides a high-temperature cooling device including a shell-side housing. The shell-side housing includes an inner cavity and an outer cavity. The inner wall of the outer cavity of the shell-side housing is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell-side housing. Multiple tube bundles are arranged within the inner cavity of the shell-side housing. Each tube bundle includes a first tube pass and a second tube pass. In this device, high-temperature fluid flows from the high-temperature fluid inlet to the high-temperature fluid outlet through the inner cavity of the shell-side housing, while low-temperature fluid flows in through the low-temperature fluid inlet of the upper outer cavity of the shell-side housing, and flows through the first tube pass, second tube pass, and outer cavity of each tube bundle to... The cryogenic fluid outlet in the upper outer cavity of the shell side forms a multi-pass, one-end fixed and one-end flexible high-temperature cooling device. The top-inlet and top-outlet liquid method is conducive to ensuring that the heat exchange tubes in contact with the high-temperature fluid are filled with coolant in real time, avoiding the appearance of liquid-free areas, preventing the heat exchange tubes from burning out at high temperatures, meeting the usage requirements or emission requirements of other process systems, and has high reliability and stability. It is suitable for use in high-temperature environments such as power, air conditioning, heat recovery, nuclear energy, petrochemical, and aerospace, while reducing the system's use and maintenance costs.

[0058] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-temperature cooling device, characterized in that, The device includes a shell-side housing; the shell-side housing includes an inner cavity and an outer cavity, the inner wall of the outer cavity of the shell-side housing is the cavity wall of the inner cavity, and the outer wall of the outer cavity is the outer wall of the shell-side housing; a plurality of tube bundles are disposed within the inner cavity of the shell-side housing; wherein, each tube bundle includes 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-side casing; The cryogenic fluid flows in through the cryogenic fluid inlet in the upper outer cavity of the shell side, and flows through the first tube side, the second tube side and the outer cavity of each tube bundle to the cryogenic fluid outlet in the upper outer cavity of the shell side. The tube bundle also includes a first upper water tank and a second upper water tank; one end of the first tube is connected to the upper outer cavity of the shell through the first upper water tank, and one end of the second tube is connected to the upper outer cavity of the shell through the second upper water tank; The tube bundle also includes a high-temperature fluid isolation plate; the high-temperature fluid isolation plate is disposed between the first upper water tank and the second upper water tank. The tube side includes multiple heat exchange tubes; The first and second water tanks in each of the tube bundles have the same structure, each including a fixed tank, a floating tank, a first elastic connecting pipe and multiple second elastic connecting pipes; The fixed box is fixedly installed between the high-temperature fluid isolation plates on both sides. The fixed box and the floating box are connected through the elastic connecting pipe. The floating box is connected to each heat exchange pipe through each of the second elastic connecting pipes. Each heat exchange pipe corresponds to each of the second elastic connecting pipes. The floating box is equipped with sliders on both sides, and the high-temperature fluid isolation plates on both sides are equipped with vertical grooves. The grooves are adapted to the sliders, and the floating box can move longitudinally along the corresponding grooves by the sliders on both sides. The length of the chute on the high-temperature fluid isolation plate is less than the height of the floating box, and the width is less than the width of the floating box.

2. The high-temperature cooling device according to claim 1, characterized in that, The tubing bundle also includes a lower water tank; the other ends of the first and second tubing sections are connected through the lower water tank.

3. The high-temperature cooling device according to claim 2, characterized in that, The tubing 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-side shell through the first flexible connecting pipe, and the second upper water tank is connected to the upper outer cavity of the shell-side shell through the second flexible connecting pipe.

4. The high-temperature cooling device according to claim 1, characterized in that, The outer cavity of the shell side is provided with multiple baffles, and each baffle corresponds to a tube bundle; wherein the position of the baffle corresponds to the position of the high-temperature fluid isolation plate in the corresponding tube bundle.

5. The high-temperature cooling device according to claim 1, characterized in that, The high-temperature fluid inlet and the low-temperature fluid inlet are located on the same side of the high-temperature cooling device, and the high-temperature fluid outlet and the low-temperature fluid outlet are located on the other side.

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