High-pressure plate heat exchanger for waste heat recovery of conventional island closed circulating cooling water system and high-pressure plate sheet of high-pressure plate heat exchanger

Abstract

The utility model discloses a high-pressure plate heat exchanger used for waste heat recovery of a conventional island closed circulating cooling water system and a high-pressure plate of the high-pressure plate heat exchanger, two longitudinal ends of the high-pressure plate are provided with dovetail grooves, the high-pressure plate is provided with corner holes, a flow guide area, a flow distribution area and a heat exchange area, a plurality of rectangular or long circular blocks are distributed on the flow distribution area, and the dovetail grooves are communicated with the dovetail grooves. Round blocks are arranged between the rectangular or long round blocks on the two transverse sides of the flow dividing area, and the rectangular or long round blocks and the round blocks are distributed in a crossed mode. The high-pressure plate type heat exchanger comprises a plate bundle, wherein the plate bundle comprises a plurality of high-pressure plates. The device can meet the use requirements of high-pressure working conditions for nuclear power, heat discharged into the sea is recycled, and the purposes of energy conservation and emission reduction are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of detachable plate heat exchanger, concretely relates to a high pressure plate heat exchanger for the waste heat recovery of conventional island closed circulation cooling water system and high pressure plate thereof. BACKGROUND

[0002] The conventional island closed circulation cooling water system of nuclear power plant turbine workshop provides cooling water for the cooler of conventional island workshop steam turbine generator auxiliary equipment, electric feed pump cooler and numerous coolers, and absorbs the heat discharged by the coolers. The conventional island closed circulation cooling water system discharges the absorbed heat into the sea. Therefore, a lot of heat energy is wasted.

[0003] The existing detachable plate heat exchanger has low heat exchange capacity and insufficient pressure resistance, and cannot meet the use requirement of high pressure working condition of nuclear power. Therefore, the heat energy discharged into the sea is recycled, and the high pressure plate heat exchanger with high heat exchange performance and strong pressure resistance and the high pressure plate thereof are developed according to the use requirement of high pressure working condition of nuclear power. SUMMARY

[0004] The utility model discloses in order to solve above-mentioned problem, and provide a kind of high pressure plate heat exchanger for the waste heat recovery of conventional island closed circulation cooling water system and high pressure plate thereof, the high pressure plate heat exchanger and high pressure plate thereof can meet the use requirement of high pressure working condition of nuclear power, the heat energy discharged into the sea is recycled, reach the purpose of energy saving and emission reduction.

[0005] In order to achieve the above purpose, the utility model provides a kind of high pressure plate for the waste heat recovery of conventional island closed circulation cooling water system, the longitudinal both ends of the high pressure plate have dovetail groove, high pressure plate is provided with angle hole, flow guide area, shunt area and heat exchange area, multiple rectangular or long circle blocks are distributed on the shunt area, the lateral sides of the shunt area are provided with circular block between rectangular or long circle block, rectangular or long circle block and circular block are cross distribution.

[0006] A kind of high pressure plate heat exchanger for the waste heat recovery of conventional island closed circulation cooling water system, including plate bundle, the plate bundle includes multiple above-mentioned high pressure plate, the last high pressure plate of plate bundle near movable compression plate side is number plate, rubber plate is equipped between the number plate and movable compression plate, the longitudinal both ends of the plate bundle are connected with upper crossbeam and lower crossbeam by dovetail groove, one end of the upper crossbeam passes through movable compression plate and plate bundle and is connected with fixed compression plate, the other end of the upper crossbeam is connected with the end of support, the other end of the support is connected with one end of lower crossbeam, the other end of the lower crossbeam passes through movable compression plate and plate bundle and is connected with fixed compression plate, movable compression plate and fixed compression plate are fixed by the multiple clamping bolts group on both sides to the plate bundle.

[0007] The utility model discloses the advantages and beneficial effects

[0008] 1. The high-pressure plate sheet in the utility model is improved on the basis of the existing plate sheet, the circular block is filled between the multiple rectangular or long circular blocks on the transverse two sides of the original shunt area, the rectangular or long circular blocks and the circular blocks are cross-distributed, thereby effectively improving the support force and pressure-bearing capacity around the corner hole, providing effective support when the high-pressure medium enters the plate bundle from the corner hole, and preventing the shunt area of the plate sheet from being deformed due to the excessively high impact pressure of the high-pressure medium flow.

[0009] 2. The high-pressure plate sheet in the utility model sets the included angle α of the herringbone corrugation in the heat exchange area to 60°, and the high-pressure plate sheets of every two adjacent plates are installed in positive and negative directions, that is, one high-pressure plate sheet is rotated by 180° along the horizontal plane relative to the other high-pressure plate sheet, so that the support between the two adjacent high-pressure plate sheets is more compact, and the corrugation pitch is reduced to about 10 mm, which not only improves the pressure-bearing capacity of the plate bundle, but also slows down the flow speed of the cold and hot media in the dense flow area, so that the cold and hot media are fully heat-exchanged after being slowed down, thereby improving the heat exchange performance.

[0010] 3. The utility model has an enlarged connecting plate connected to the left end of the upper cross beam, which can increase the contact area between the upper cross beam and the fixed compression plate, so that the upper cross beam can be better connected to the fixed compression plate. Meanwhile, the application has an inwardly recessed clamping groove at the position of the fixed compression plate relative to the connecting plate. By embedding the connecting plate in the clamping groove, the shearing stress of the clamping bolts on the clamping bolt set caused by the lateral connection of the upper cross beam and the fixed compression plate is avoided, the service life of the equipment is improved, and the defect that the plate bundle cannot be tightly attached to the fixed compression plate due to the addition of the connecting plate is avoided, so that the fixed compression plate is more tightly attached to the plate bundle, thereby further improving the pressure-bearing capacity of the plate heat exchanger.

[0011] 4. The utility model has a rubber plate between the number plate and the movable compression plate. The newly added rubber plate can seal the number plate and support the plate bundle as a whole, thereby further improving the pressure-bearing capacity of the plate bundle.

[0012] 5. The utility model has a blowdown inspection port in the cold medium high-pressure area of the number plate and the movable compression plate. The blowdown inspection port can be used to inspect and blow down the inside of the plate bundle without disassembling the plate heat exchanger, and can also be used to backwash the plate heat exchanger, thereby avoiding frequent disassembly of the equipment and reducing the service life of the plate heat exchanger. Meanwhile, a metal corrosion-resistant bushing made of the same material as the high-pressure plate sheet is additionally arranged on the blowdown inspection port to prevent the blowdown inspection port from being corroded by sewage.

[0013] 6. The utility model discloses a recessed clamping groove is equipped on the one side of the clamping fixing sleeve relative to the clamping nut, the clamping nut is clamped into the clamping groove after being tightened with the clamping bolt, and the clamping nut is further clamped and locked by clamping the clamping nut into the clamping groove, thereby improving the overall pressure-bearing capacity of the plate heat exchanger, avoiding medium leakage and pressure relief caused by the loosening of the clamping nut when the plate heat exchanger vibrates under high pressure working conditions.

[0014] 7. The utility model discloses the improvement and the opposite installation of adjacent high pressure plate piece, which improves the heat exchange performance of single high pressure plate piece, expands the heat exchange area of single high pressure plate piece to 2 square meters, realizes 16MW waste heat recovery, improves the pressure-bearing capacity of high pressure plate piece and the overall pressure-bearing capacity of plate bundle, changes the frame of plate heat exchanger, further improves the pressure-bearing capacity of plate heat exchanger, the design pressure of the utility model can be 3.5MPa, the test pressure can reach 4.55MPa, breaks through the limitation of national standard that the design pressure of detachable plate heat exchanger is not higher than 3.0MPa, becomes a new type of high pressure working equipment for nuclear power, recycles the heat discharged into the sea, achieves the purpose of energy saving and emission reduction, avoids the temperature rise of seawater, and prevents seawater pollution.

[0015] 8. The utility model discloses four pipe connectors on the fixed compression plate, which are hot medium inlet, hot medium outlet, cold medium inlet and cold medium outlet, isolation port, pressure detection port, temperature detection port and exhaust port on the hot medium inlet and cold medium outlet, liquid discharge port, isolation port, pressure detection port and temperature detection port on the hot medium outlet and cold medium inlet, which realizes independent monitoring and maintenance function, regular pollution discharge, regular equipment inspection, real-time temperature and pressure observation and exhaust function, adjusts the flow demand of equipment through the change of the above parameters, and infers whether the equipment is blocked and whether the dirt needs to be removed through the change of numerical value. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only the embodiments of the utility model, and those skilled in the art can obtain other drawings according to the provided drawings without creating labor.

[0017] Figure 1 It is the overall structure schematic diagram of the high pressure plate heat exchanger provided by the utility model;

[0018] Figure 2is another angle structure schematic view of the high-pressure plate heat exchanger provided by the utility model;

[0019] Figure 3 is another angle structure schematic view of the high-pressure plate heat exchanger provided by the utility model Figure 2 is the enlarged view of A in the utility model;

[0020] Figure 4 is another angle structure schematic view of the high-pressure plate heat exchanger provided by the utility model Figure 2 is the enlarged view of B in the utility model;

[0021] Figure 5 is another angle structure schematic view of the high-pressure plate heat exchanger provided by the utility model Figure 2 is the enlarged view of C in the utility model;

[0022] Figure 6 is the partial enlarged view of the clamping bolt group in the utility model;

[0023] Figure 7 is another angle structure schematic view of the high-pressure plate heat exchanger provided by the utility model;

[0024] Figure 8 is another angle structure schematic view of the high-pressure plate heat exchanger provided by the utility model Figure 7 is the enlarged view of D in the utility model;

[0025] Figure 9 is another angle structure schematic view of the high-pressure plate heat exchanger provided by the utility model Figure 7 is the enlarged view of E in the utility model.

[0026] The drawing mark: high-pressure plate 1, swallow groove 101, angle hole 102, flow guide area 103, shunt area 104, rectangular or long circular block 1041, circular block 1042, heat exchange area 105, herringbone corrugation 1051, plate bundle 2, upper crossbeam 3, connecting plate 31, lower crossbeam 4, movable compression plate 5, gap 51, fixed compression plate 6, clamping groove 61, hot medium inlet 62, hot medium outlet 63, cold medium inlet 64, cold medium outlet 65, support 7, clamping bolt group 8, clamping bolt 81, clamping fixing sleeve 82, clamping groove 821, clamping nut 83, roller support 9, roller 10, blowdown inspection port 11, anticorrosion bushing 12, support structure 13, silk nut block 131, support 132, drainage port 14, isolation port 15, pressure detection port 16, temperature detection port 17 and exhaust port 18. Specific implementation

[0027] The specific implementation of the utility model is described in detail below in combination with the drawings, and it should be noted that in the description of the utility model, the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front", "back" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The device or element must have a particular orientation, be constructed and operated in a particular orientation.

[0028] As shown in Figure 7 and Figure 8 A high-pressure plate for waste heat recovery of a conventional island closed circulation cooling water system, the left and right ends of the high-pressure plate 1 are provided with dovetail grooves 101, and the high-pressure plate 1 is provided with angle holes 102, flow guide areas 103, flow distribution areas 104 and heat exchange areas 105, a plurality of rectangular or oblong blocks 1041 are distributed on the flow distribution area 104, in order to effectively improve the supporting force and pressure bearing capacity around the angle hole 102, the embodiment is additionally provided with circular blocks 1042 between the rectangular or oblong blocks 1041 on the upper and lower sides of the flow distribution area 104, the rectangular or oblong blocks 1041 and the circular blocks 1042 are distributed in cross, when the high-pressure medium enters from the angle hole 102, the rectangular or oblong blocks 1041 and the circular blocks 1042 can provide effective support for the high-pressure plate 1, preventing the impact pressure of the high-pressure medium flow from being too high to cause the flow distribution area 104 of the high-pressure plate to deform.

[0029] As shown in Figure 9 The heat exchange area 105 is provided with a plurality of chevron corrugations 1051, in order to improve the heat exchange performance and pressure bearing capacity of the plate bundle 2, the included angle α of the chevron corrugation 1051 is reduced to 60°, and at the same time, every two adjacent high-pressure plates 1 are installed in positive and negative directions, that is, one of the high-pressure plates 1 is rotated by 180° along the horizontal plane relative to the other high-pressure plate 1, so that the support between adjacent high-pressure plates 1 is more compact, and the corrugation pitch is shortened to 9.8mm, which not only improves the pressure bearing capacity of the plate bundle 2, but also slows down the flow speed of the cold and hot media in the dense flow area, so that the cold and hot media are fully heat exchanged after speed reduction, and the heat exchange performance is improved.

[0030] As shown in Figure 1 and Figure 2As shown, a high-pressure plate heat exchanger for waste heat recovery of a conventional island closed circulation cooling water system includes a plate bundle 2 comprising a plurality of high-pressure plates 1, the upper and lower ends of the plate bundle 2 are suspended between an upper cross beam 3 and a lower cross beam 4 through dovetail grooves 101, the upper cross beam 3 and the lower cross beam 4 are used for suspending and positioning the plate bundle 2, the left end of the upper cross beam 3 is connected with a fixed compression plate 6 through a movable compression plate 5 and the plate bundle 2, the right end of the upper cross beam 3 is connected to the top end of a support 7, avoiding the connection of the right end of the upper cross beam 3 with the side of the support 7, reducing the support strength of the upper cross beam 3, improving the safety performance, the lower part of the support 7 is connected with the right end of the lower cross beam 4, the lower cross beam 4 adopts a solid structure, improving the connection strength of the frame of the plate heat exchanger, the left end of the lower cross beam 4 is connected with the fixed compression plate 6 through the movable compression plate 5 and the plate bundle 2, the movable compression plate 5 and the fixed compression plate 6 clamp and fix the plate bundle 2 through a plurality of clamping bolt groups 8 on the left and right sides, the fixed compression plate 6 is provided with four pipe openings, which are a hot medium inlet 62, a hot medium outlet 63, a cold medium inlet 64 and a cold medium outlet 65, the hot medium (sea water) enters the plate bundle 2 from the hot medium inlet 62 and flows out of the high-pressure plate heat exchanger through the hot medium outlet 63, the cold medium (condensate water) enters the plate bundle 2 through the cold medium inlet 64 and flows out of the high-pressure plate heat exchanger from the cold medium outlet 65, the condensate water and the sea water exchange heat in the plate bundle 2, thereby recovering and utilizing the heat in the sea water 2, and meanwhile, the temperature rise of the sea water and the pollution of the sea water are avoided. The hot medium inlet 62 and the cold medium outlet 65 are provided with an isolation port 15, a pressure detection port 16, a temperature detection port 17 and an exhaust port 18, the hot medium outlet 63 and the cold medium inlet 64 are provided with a liquid discharge port 14, an isolation port 15, a pressure detection port 16 and a temperature detection port 17, the isolation port 15 is provided with an isolation valve, which is normally closed, when cleaning the high-pressure plate heat exchanger, cleaning reagents are added from the isolation port 15, so that the high-pressure plate heat exchanger can be cleaned without disassembly, the pressure detection port 16 and the temperature detection port 17 can observe the changes of temperature and pressure in real time, the liquid discharge port 14 can regularly discharge sewage, and the exhaust port 18 can exhaust the gas, so that the high-pressure plate heat exchanger has independent monitoring and maintenance functions, the changes of the above parameters can be used to adjust the flow demand of the equipment, and whether the equipment is blocked and whether the dirt needs to be removed can be inferred through the changes of the numerical values.

[0031] As a further optimization, the last high-pressure plate on the side close to the movable compression plate 5 of the plate bundle 2 is a number plate, and a rubber plate is arranged between the number plate and the movable compression plate 5, which can seal the number plate and support the whole plate bundle, thereby further improving the pressure-bearing capacity of the plate bundle.

[0032] As a further optimization, as shown in the drawings, Figure 2 andFigure 3 As shown, an enlarged connecting plate 31 is fixedly connected to the left end of the upper crossbeam 3. The fixed clamping plate 6 has a slot 61 at the position relative to the connecting plate 31. The upper crossbeam 3 is connected to the fixed clamping plate 6 by embedding the connecting plate 31 into the slot 61. Through the embedded connection method, not only does the fixed clamping plate 6 provide support for the upper crossbeam 3, but it also avoids shear stress in the clamping bolts 81 in the clamping bolt group 8 caused by the side connection between the upper crossbeam 3 and the fixed clamping plate 6, thus improving the service life of the equipment. At the same time, it avoids the defect that the plate bundle 2 cannot be installed properly and cannot fit tightly with the fixed clamping plate 6 due to the addition of the connecting plate 31, so that the fixed clamping plate 6 and the plate bundle 2 fit more tightly, thereby further improving the pressure bearing capacity of the plate heat exchanger.

[0033] As a further optimization, such as Figure 4 As shown, the movable clamping plate 5 has a notch 51 at the position relative to the upper crossbeam 3. Two sets of roller brackets 9 are provided on the two side walls of the notch 51. Each set of roller brackets 9 consists of two roller brackets, and a roller 10 is rotatably connected between the two roller brackets. When the movable clamping plate 5 moves left and right relative to the upper crossbeam 3, the roller 10 can roll on the upper crossbeam 3. In this embodiment, by setting a double roller structure, the heavy movable clamping plate 5 can be moved more stably and effortlessly, which is convenient for disassembling and repairing the equipment or adding or removing high-pressure plates 1.

[0034] As a further optimization, such as Figure 2 and 5 As shown, the cold medium high-pressure zone of the number plate and the movable clamping plate 5 ( Figure 2 A drain inspection port 11 is provided in the lower left corner of the plate heat exchanger. The drain inspection port 11 allows for inspection, drainage, and backwashing of the interior of the plate heat exchanger without disassembly. At the same time, a metal anti-corrosion bushing 12 of the same material as the high-pressure plate 1 is added to the drain inspection port 11 to prevent sewage from corroding the drain inspection port 11 and to improve the service life of the plate heat exchanger.

[0035] As a further optimization, such as Figure 5 As shown, support structures 13 are provided on the left and right sides below the movable clamping plate 5. The support structure 13 includes a threaded nut block 131 and a support 132. The support structure 13 is connected to the movable clamping plate 5 through the threaded nut block 131. Both the threaded nut block 131 and the support 132 are provided with threaded holes. The threaded nut block 131 and the support 132 are connected by a lead screw to form a detachable and flexible support structure. When the high-pressure plate heat exchanger is running normally, the support 132 is screwed onto the threaded nut block 131 to support the movable clamping plate 5. When it is necessary to repair the equipment or add or remove the high-pressure plates 1, the support 132 can be removed from the threaded nut block 131.

[0036] As a further optimization, such asFigure 2 and Figure 6 As shown in the figure, the clamping bolt set 8 includes a clamping bolt 81, a clamping fixing sleeve 82 and a clamping nut 83, the clamping bolt 81 passes through the fixed pressing plate 6, the movable pressing plate 5 and the clamping fixing sleeve 82 and is clamped and fixed by the clamping nut 83, in order to increase the clamping strength of the clamping bolt set 8 on the fixed pressing plate 6, the plate bundle 2 and the movable pressing plate 5, the embodiment is provided with a clamping groove 821 recessed inward on the side of the clamping fixing sleeve 82 relative to the clamping nut 83, the clamping nut 83 is clamped into the clamping groove 821 after being screwed with the clamping bolt 81, so that the clamping nut 83 can be further clamped and locked, thereby improving the overall pressure-bearing capacity of the equipment, and the equipment can prevent the clamping nut 83 from loosening and causing leakage during the operation process under high pressure working conditions.

[0037] The present application improves the pressure-bearing capacity and heat exchange performance of the high-pressure plate 1, so that the heat exchange area of a single high-pressure plate 1 can reach 2 square meters, the support between the high-pressure plates is more compact through the forward and reverse installation of adjacent high-pressure plates, the corrugated pitch is shortened, the flow speed of the cold and hot medium in the dense flow area is slowed down, the cold and hot medium can be fully heat exchanged after being slowed down, thereby improving the heat exchange performance, realizing the high-efficiency heat exchange of the 16MW higher than the conventional plate heat exchanger, further improving the pressure-bearing capacity of the plate heat exchanger through the change of the frame of the plate heat exchanger, so that the design pressure of the present application is as high as 3.5MPa, the test pressure is 4.55MPa, which is higher than the limit of the national standard design pressure 3.0MPa. Meanwhile, the present application is designed as a detachable plate heat exchanger, the number of high-pressure plates 1 in the plate bundle 2 can be increased or reduced to adapt to different closed water temperature requirements, so as to meet the needs of various operating conditions, and the use and maintenance are simpler.

[0038] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and not to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the embodiments of the present application.

Claims

1. A high pressure plate for waste heat recovery of conventional island closed cycle cooling water system, the high pressure plate (1) has dovetail groove (101) at both longitudinal ends, and is provided with angle hole (102), flow guide area (103), flow distribution area (104) and heat exchange area (105), characterized in that: The shunt area (104) is provided with a plurality of rectangular or oblong blocks (1041), and the lateral sides of the shunt area (104) are provided with circular blocks (1042) between the rectangular or oblong blocks (1041).

2. A high pressure sheet for waste heat recovery of a once-through island closed cycle cooling water system according to claim 1, characterized in that: The heat exchange area (105) is provided with a plurality of herringbone corrugations (1051), and the included angle α of the herringbone corrugations (1051) is 60°.

3. A high pressure sheet for recovering waste heat from a closed circulation cooling water system of a conventional island according to claim 1 or 2, characterized in that: Each adjacent two high-pressure plates (1) are installed in opposite directions, that is, one high-pressure plate (1) is rotated by 180° along the horizontal plane relative to the other high-pressure plate (1).

4. A high pressure plate heat exchanger for waste heat recovery of a conventional island closed cycle cooling water system, characterized by: The plate bundle (2) is provided with a last high-pressure plate close to the movable compression plate (5), which is a number plate, and a rubber plate is arranged between the number plate and the movable compression plate (5). The longitudinal ends of the plate bundle (2) are connected with the upper cross beam (3) and the lower cross beam (4) through dovetail grooves (101). One end of the upper cross beam (3) penetrates the movable compression plate (5) and the plate bundle (2) and is connected with the fixed compression plate (6). The other end of the upper cross beam (3) is connected with the end of the support (7). The other end of the support (7) is connected with one end of the lower cross beam (4). The other end of the lower cross beam (4) penetrates the movable compression plate (5) and the plate bundle (2) and is connected with the fixed compression plate (6). The movable compression plate (5) and the fixed compression plate (6) clamp and fix the plate bundle (2) through a plurality of clamping bolt groups (8) on both sides.

5. A high pressure plate heat exchanger for waste heat recovery of a conventional island closed cycle cooling water system according to claim 4, characterized in that: The end of the upper cross beam (3) is provided with a connecting plate (31), and the position of the fixed compression plate (6) relative to the connecting plate (31) is provided with a clamping groove (61). The upper cross beam (3) is connected with the fixed compression plate (6) by embedding the connecting plate (31) into the clamping groove (61).

6. A high pressure plate heat exchanger for waste heat recovery of a conventional island closed cycle cooling water system as claimed in claim 4, wherein: The position of the movable compression plate (5) relative to the upper cross beam (3) is provided with an opening (51), and two groups of roller supports (9) are arranged on the side walls of the opening (51). The upper part of each group of roller supports (9) is rotatably connected with a roller (10).

7. A high pressure plate heat exchanger for waste heat recovery of a once-through island closed cycle cooling water system according to claim 4, characterized in that: The cold medium high-pressure area of the number plate and the movable compression plate (5) is provided with a pollution inspection port (11), and the pollution inspection port (11) is provided with a corrosion-resistant bushing (12).

8. A high pressure plate heat exchanger for waste heat recovery of a conventional island closed cycle cooling water system according to claim 4, characterized in that: The movable compression plate (5) is provided with a support structure (13) below the two sides. The support structure (13) includes a screw nut block (131) and a support (132). The support structure (13) is connected with the movable compression plate (5) through the screw nut block (131). The screw nut block (131) and the support (132) are both provided with threaded holes, and the screw nut block (131) and the support (132) are connected through a lead screw to form a detachable flexible support structure.

9. A high pressure plate heat exchanger for waste heat recovery of a conventional island closed cycle cooling water system according to claim 4, characterized in that: The clamping bolt set (8) comprises a clamping bolt (81), a clamping fixing sleeve (82) and a clamping nut (83), the clamping bolt (81) passes through the fixed pressing plate (6), the movable pressing plate (5) and the clamping fixing sleeve (82) and is clamped and fixed by the clamping nut (83), the clamping fixing sleeve (82) is provided with a clamping groove (821) recessed inward on one side relative to the clamping nut (83), and the clamping nut (83) is clamped into the clamping groove (821) after being screwed with the clamping bolt (81).

10. A high pressure plate heat exchanger for waste heat recovery of a conventional island closed cycle cooling water system as claimed in claim 4, wherein: The fixed pressing plate (6) is provided with four pipe connection openings, namely a hot medium inlet (62), a hot medium outlet (63), a cold medium inlet (64) and a cold medium outlet (65), the hot medium inlet (62) and the cold medium outlet (65) are provided with an isolation port (15), a pressure detection port (16), a temperature detection port (17) and an exhaust port (18), and the hot medium outlet (63) and the cold medium inlet (64) are provided with a liquid discharge port (14), an isolation port (15), a pressure detection port (16) and a temperature detection port (17).

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