A nuclear power plant leak-proof heat exchanger

Abstract

The application provides a nuclear power plant anti-leakage heat exchanger, which comprises a heat exchanger body, the heat exchanger body comprises a box body, a fixing seat is welded on the side of the box body, a fixing hole is formed in the fixing seat, a filter detection box is fixed on the side of the box body, a feeding pipe is fixed on the top of the box body, a discharging pipe is fixed on the bottom of the box body, a water inlet pipe is fixed on one end of the box body, a water outlet pipe is fixed on the bottom of the filter detection box, a fixing pipe is fixed in the box body, and a supporting pipe is fixed on the fixing pipe. The limiting ring is matched with the supporting pipe under the extrusion of the arc-shaped seat, the limiting ring provides limiting and fixing for the arc-shaped seat, on one hand, the contact area with the supporting pipe is increased, heat absorption and heat conduction are facilitated, and on the other hand, the detection mechanism in the limiting ring is installed at different positions and is used for detecting the supporting pipes and the arc-shaped seat at different positions, and the detection mechanism is used for simultaneously detecting water and nuclear elements.

Description

Technical Field

[0001] This invention relates to the field of leak-proof heat exchanger equipment, specifically a leak-proof heat exchanger for nuclear power plants. Background Technology

[0002] A heat exchanger is a device that transfers part of the heat from a hot fluid to a cold fluid. It is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial productions. During the use of a heat exchanger, due to the large temperature difference between the inside and outside of the heat exchange tube, expansion and relaxation will occur between the heat exchange tube inlet and the tube sheet, which will lead to leakage of the heat exchange tube and thus affect the normal use of the heat exchanger.

[0003] According to the patent document CN214537496U, a leak-proof heat exchanger includes a housing, a first inlet pipe, a first outlet pipe, an inspection cover, a second inlet pipe, a second outlet pipe, support legs, a tube sheet, a first hole, a compensation device, locking screws, a second sealing strip, heat exchange tubes, a boss, a first baffle plate, a second hole, and a second baffle plate. The first inlet pipe runs through the bottom of the housing, and the first outlet pipe runs through the upper side of the housing. This technical solution can compensate for the expansion and relaxation caused by temperature differences during the use of the heat exchanger, thereby reducing the probability of leakage and improving heat exchange efficiency. It has a simple structure and is easy to operate. However, while this solution avoids leakage caused by thermal expansion and contraction, it does not allow for adjustment of the heat exchange area and position of the internal heat exchanger, and it cannot detect harmful substances inside the heat exchanger during heat exchange, which is inconvenient during use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a leak-proof heat exchanger for nuclear power plants, thereby solving the problems mentioned in the background section. The present invention features a novel structure. During use, the arc-shaped seats are staggered front to back. Simultaneously, the fixed column and the opening cooperate to achieve the flow of cooling water. The staggered front to back arrangement of the arc-shaped seats can expand the cooling area of ​​the support tube, allowing for simultaneous cooling at different locations. While cooling, a detection mechanism detects whether nuclear elements are leaking.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a leak-proof heat exchanger for nuclear power plants, comprising a heat exchanger body, the heat exchanger body including a housing, a fixing seat welded to the side of the housing, a fixing hole opened on the fixing seat, a filter detection box fixed to the side of the housing, a feed pipe fixed to the top of the housing, a discharge pipe fixed to the bottom of the housing, a water inlet pipe fixed to one end of the housing, a drain pipe fixed to the bottom of the filter detection box, and a fixing pipe fixed inside the housing, with a support pipe fixedly installed on each fixing pipe.

[0006] Furthermore, a bent pipe is fixedly installed between the support pipes, a controller is fixedly installed on the side of the filter detection box, and a support pipe is fixedly installed between the filter detection box and the box body.

[0007] Furthermore, one end of both the feed pipe and the discharge pipe is fixed to the fixed pipe, and an arc-shaped seat one and an arc-shaped seat two are movably installed on the support pipe.

[0008] Furthermore, a fixing post is fixed to the bottom of the first arc-shaped seat, and an opening is made on the second arc-shaped seat, with the fixing post movably installed inside the opening.

[0009] Furthermore, a sealing plate is fixed inside the opening, and a one-way valve is fixedly installed inside the fixing column.

[0010] Furthermore, a supporting water pipe is fixed on the first arc-shaped seat, and a fixing water pipe is fixed on the second arc-shaped seat.

[0011] Furthermore, a limiting ring is fixed on the inner wall of the first and second arc-shaped seats, and a detection mechanism is fixedly installed inside the limiting ring.

[0012] Furthermore, a rotating column is rotatably installed inside the support tube, and a limiting disk is fixed to the top of the rotating column, with a stirring blade fixed on the limiting disk.

[0013] Furthermore, the filter detection box is internally equipped with a filter assembly and a detection assembly, the detection assembly being a nuclear element detection sensor.

[0014] Furthermore, both the first and second arc-shaped seats are fixed with connecting pipes, one end of which is fixed to the supporting water pipe and the fixed water pipe, respectively.

[0015] The beneficial effects of the present invention: The present invention provides a leak-proof heat exchanger for nuclear power plants, comprising a housing; a fixed base; a fixed hole; a feed pipe; a water inlet pipe; a filter detection box; a controller; a drain pipe; a fixed pipe; a support pipe; a bend; a discharge pipe; an arc-shaped base one; an arc-shaped base two; a support water pipe; a fixed water pipe; an opening; a fixed column; a connecting pipe; a limit ring; a detection mechanism; a rotating column; a limit disc; a stirring blade; a sealing plate; and a one-way valve.

[0016] This type of leak-proof heat exchanger for nuclear power plants allows for the rear-to-rear misalignment of the arc-shaped seats during use. Simultaneously, the fixed column and opening work together to allow cooling water to flow. The rear-to-rear misalignment of the arc-shaped seats can expand the cooling area of ​​the support tube, enabling simultaneous cooling at different locations. While cooling, a detection agency can detect whether nuclear elements are leaking.

[0017] This type of leak-proof heat exchanger for nuclear power plants features a limiting ring that engages with a support tube under the compression of an arc-shaped seat. The limiting ring provides a limiting and fixing function for the arc-shaped seat while increasing the contact area with the support tube, facilitating heat absorption and conduction. Additionally, the detection mechanism inside the limiting ring is installed at different positions to detect the interaction between the support tube and the arc-shaped seat at different locations. The detection mechanism can simultaneously detect water and nuclear elements.

[0018] This type of leak-proof heat exchanger for nuclear power plants has a stirring blade installed inside the support tube. The nuclear elements collide with the stirring blade. On the one hand, the stirring blade blocks the material and prolongs the time the material spends in the support tube, which facilitates the uniform transfer of heat from the inside of the material to the surface of the support tube for cooling. On the other hand, the rotation of the stirring blade provides assistance for the subsequent movement of the material, which facilitates the flow of the material. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a leak-proof heat exchanger for nuclear power plants according to the present invention;

[0020] Figure 2 This is a schematic diagram of the support pipe and bend pipe of a leak-proof heat exchanger for nuclear power plants according to the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of an arc-shaped plate and a support pipe in a leak-proof heat exchanger for a nuclear power plant according to the present invention;

[0022] Figure 4 This is a schematic diagram of the fit between the arc-shaped plates in a leak-proof heat exchanger for a nuclear power plant according to the present invention;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the support tube of a leak-proof heat exchanger for a nuclear power plant according to the present invention;

[0024] Figure 6 This is a schematic diagram of the distribution of stirring blades in a leak-proof heat exchanger for a nuclear power plant according to the present invention;

[0025] In the diagram: 1. Box body; 2. Fixing seat; 3. Fixing hole; 4. Feed pipe; 5. Water inlet pipe; 6. Filter detection box; 7. Controller; 8. Drain pipe; 9. Fixing pipe; 10. Support pipe; 11. Bend pipe; 12. Discharge pipe; 13. Arc-shaped seat one; 14. Arc-shaped seat two; 15. Support water pipe; 16. Fixing water pipe; 17. Opening; 18. Fixing column; 19. Connecting pipe; 20. Limiting ring; 21. Detection mechanism; 22. Rotating column; 23. Limiting plate; 24. Stirring blade; 25. Sealing plate; 26. One-way valve. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0027] Please see Figures 1 to 6 This invention provides a technical solution: a leak-proof heat exchanger for nuclear power plants, comprising a heat exchanger body, the heat exchanger body including a housing 1, a fixing seat 2 welded to the side of the housing 1, a fixing hole 3 on the fixing seat 2, a filter detection box 6 fixed to the side of the housing 1, a feed pipe 4 fixed to the top of the housing 1, a discharge pipe 12 fixed to the bottom of the housing 1, a water inlet pipe 5 fixed to one end of the housing 1, a drain pipe 8 fixed to the bottom of the filter detection box 6, a fixing pipe 9 fixed inside the housing 1, a support pipe 10 fixedly installed on each of the fixing pipes 9, a bend pipe 11 fixedly installed between the support pipes 10, a controller 7 fixedly installed on the side of the filter detection box 6, and a support pipe fixedly installed between the filter detection box 6 and the housing 1. The support pipe facilitates the entry of high-temperature water into the filter detection box 6 for filtration and detection, preventing harmful substances from being discharged from the drain pipe 8.

[0028] In this embodiment, one end of the feed pipe 4 and the discharge pipe 12 are both fixed to the fixed pipe 9. An arc-shaped seat 13 and an arc-shaped seat 2 14 are movably installed on the support pipe 10. A fixed post 18 is fixed to the bottom of the arc-shaped seat 13. An opening 17 is opened on the arc-shaped seat 2 14. The fixed post 18 is movably installed inside the opening 17. A sealing plate 25 is fixed inside the opening 17. A one-way valve 26 is fixedly installed inside the fixed post 18. The sealing plate 25 blocks and seals the opening 17 without external force to prevent cooling water from flowing out of the opening 17.

[0029] In this embodiment, a supporting water pipe 15 is fixed on the arc-shaped seat 13, and a fixed water pipe 16 is fixed on the arc-shaped seat 24. A limiting ring 20 is fixed on the inner wall of the arc-shaped seat 13 and the arc-shaped seat 24. A detection mechanism 21 is fixedly installed inside the limiting ring 20. The detection mechanism 21 includes a nuclear element detection sensor and a humidity sensor, which detects nuclear elements and monitors water leakage at the same time. A rotating column 22 is rotatably installed inside the supporting pipe 10. A limiting disk 23 is fixed on the top of the rotating column 22. A stirring blade 24 is fixed on the limiting disk 23. A filter assembly and a detection assembly are fixedly installed inside the filter detection box 6. The detection assembly is a nuclear element detection sensor. A connecting pipe 19 is fixed on both the arc-shaped seat 13 and the arc-shaped seat 24. One end of the connecting pipe 19 is fixed on the supporting water pipe 15 and the fixed water pipe 16, respectively. The supporting water pipe 15 and the fixed water pipe 16 are later connected to the inlet pipe 5 and the outlet pipe 8 through connecting pipes to circulate cooling water.

[0030] In use, the housing 1 is fixed in place by the fixing seat 2. The feed pipe 4 and water inlet pipe 5 are connected to the external unit pipes respectively. After connection, the high-temperature nuclear material enters the support pipe 10 through the fixing pipe 9 and flows inside the support pipe 10. During the flow, the cooling water inside the arc-shaped seat 13 and arc-shaped seat 2 14 adsorbs and cools the high temperature on the support pipe 10 and the bend 11. Before installing the arc-shaped seat 13 and arc-shaped seat 2 14, the device is rotated according to the required cooling position or the width of the support pipe 10. To adjust the length between arc-shaped seat 13 and arc-shaped seat 14, during installation, arc-shaped seat 13 is installed inside the opening 17 via the fixing post 18. After the fixing post 18 is installed inside the opening 17, the sealing plate 25 is squeezed open to both sides. After being squeezed open, cooling water flows inside arc-shaped seat 14. Through the one-way valve 26 inside the fixing post 18, cooling water enters from one side of arc-shaped seat 14 and then exits from the other side, thus realizing the circulation of cooling water. Rotation removes the high temperature on the support pipe 10. The arc-shaped seats 13 and 14 wrap around the connection between the support tube 10 and the bend 11. This wrapping absorbs heat and prevents leakage caused by heat-induced collisions at the connection point. During use, the limiting ring 20 contacts the support tube 10 under the pressure of the arc-shaped seats 13 and 14. The limiting ring 20 provides a limiting and fixing function for the arc-shaped seats 13 and 14, while also increasing the contact area with the support tube 10 to facilitate heat absorption and conduction. Furthermore, the detection mechanism 21 inside the limiting ring 20 is installed in different positions to detect different... The support tube 10 and the arc-shaped seat 13 and arc-shaped seat 24 at the same position are tested. The testing mechanism 21 is used to test water and nuclear elements at the same time. A stirring blade 24 is installed inside the support tube 10. The nuclear elements collide with the stirring blade 24. The stirring blade 24 blocks the material and prolongs the time the material is in the support tube 10, so that the heat inside the material can be evenly transferred to the surface of the support tube 10 for cooling. In addition, the rotation of the stirring blade 24 provides assistance for the movement of the material later, which facilitates the flow of the material.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A leak-proof heat exchanger for nuclear power plants, comprising a heat exchanger body, characterized in that: The heat exchanger body includes a housing (1), a fixing seat (2) welded to the side of the housing (1), a fixing hole (3) opened on the fixing seat (2), a filter detection box (6) fixed to the side of the housing (1), a feed pipe (4) fixed to the top of the housing (1), a discharge pipe (12) fixed to the bottom of the housing (1), a water inlet pipe (5) fixed to one end of the housing (1), a drain pipe (8) fixed to the bottom of the filter detection box (6), a fixing pipe (9) fixed inside the housing (1), a support pipe (10) fixedly installed on the fixing pipe (9), one end of the feed pipe (4) and the discharge pipe (12) fixed to the fixing pipe (9), and an arc-shaped seat one (13) and an arc-shaped seat two (14) movably installed on the support pipe (10). The bottom of the arc-shaped seat one (13) is fixed to the support pipe (10). A fixed column (18) is fixed in the part. An opening (17) is opened on the second arc-shaped seat (14). The fixed column (18) is movably installed inside the opening (17). A sealing plate (25) is fixed inside the opening (17). A one-way valve (26) is fixedly installed inside the fixed column (18). A supporting water pipe (15) is fixed on the first arc-shaped seat (13). A fixed water pipe (16) is fixed on the second arc-shaped seat (14). A limit ring (20) is fixed on the inner wall of the first arc-shaped seat (13) and the second arc-shaped seat (14). A detection mechanism (21) is fixedly installed inside the limit ring (20). A rotating column (22) is rotatably installed inside the supporting pipe (10). A limit plate (23) is fixed on the top of the rotating column (22). A stirring blade (24) is fixed on the limit plate (23).

2. The nuclear power plant leak-proof heat exchanger according to claim 1, characterized in that: A bend (11) is fixedly installed between the support pipes (10), a controller (7) is fixedly installed on the side of the filter detection box (6), and a support pipe is fixedly installed between the filter detection box (6) and the box body (1).

3. A leak-proof heat exchanger for nuclear power plants according to claim 1, characterized in that: The filter detection box (6) is equipped with a filter assembly and a detection assembly, the detection assembly being a nuclear element detection sensor.

4. A leak-proof heat exchanger for nuclear power plants according to claim 1, characterized in that: Both the first arc-shaped seat (13) and the second arc-shaped seat (14) are fixed with connecting pipes (19), one end of which is fixed to the supporting water pipe (15) and the fixed water pipe (16), respectively.

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