A silencer structure and nuclear power plant heat exchanger

Abstract

The present invention relates to the field of sound silencing technology, and specifically to a sound silencing structure and a nuclear power plant heat exchanger, comprising: sliding grooves are symmetrically provided on both sides of an insert block, a mounting block is sleeved on the surface of the insert block, a sound insulation inner sealing plate is provided on the surface of the mounting block, sound insulation cotton is provided on the surface of the sound insulation inner sealing plate, and sound insulation outer sealing plate is provided on the surface of the sound insulation cotton; a fixing plate is provided inside the fixing groove, and a docking groove is provided at one end of the fixing plate; a docking groove is provided at one end of a docking male plug, and the docking male plug is connected to the docking plate through the docking groove, and a docking female plug is provided at the other end of the docking male plug; the beneficial effect is that the sound insulation outer sealing plate and multiple groups of sound insulation cotton and the sound insulation inner sealing plate form a sound insulation plate to wrap the outer shell of the nuclear power plant heat exchanger, the insert block and the mounting block form a non-rigid connection between the outer shell of the nuclear power plant heat exchanger and the sound insulation plate, and the sound insulation plate is elastically fixed by the fixing plate. When water inside the outer shell of the nuclear power plant heat exchanger boils, the noise generated is silenced by the sound insulation plate, thereby reducing the transmission of noise.

Description

Technical Field

[0001] The present invention relates to the technical field of silencing, in particular to a silencing structure and a heat exchanger for a nuclear power plant. Background Art

[0002] A nuclear power plant is a facility that generates heat through nuclear energy reactions, then uses a heat exchanger to heat water to boiling. The steam generated by the boiling water drives the turbine of the generator to generate electricity.

[0003] Existing nuclear power plant heat exchangers use heavy water, heated to 300-400 degrees Celsius by nuclear reactions, to be piped into the heat exchanger. Heavy water circulates through the heat exchange tubes inside the heat exchanger, heating the ordinary water inside the heat exchanger to boiling through the heat exchange tubes, thereby generating steam.

[0004] However, when the water inside the heat exchanger boils, it will produce violent vibrations, causing the heat exchanger shell to resonate, thereby generating loud noise, causing noise pollution to the surrounding environment, and seriously affecting the physical and mental health of nearby workers. Summary of the Invention

[0005] The object of the present invention is to provide a silencer structure and a nuclear power plant heat exchanger to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a sound-absorbing structure, comprising:

[0007] Insert block, slide grooves are symmetrically opened on both sides of the insert block, and a limit column and an elastic support member are set inside the slide groove. The surface of the insert block is sleeved with a mounting block, and the surface of the mounting block is provided with a sound insulation inner sealing plate, and the surface of the sound insulation inner sealing plate is provided with sound insulation cotton, and the surface of the sound insulation cotton is provided with a sound insulation outer sealing plate, and the surface of the sound insulation outer sealing plate is provided with a fixing groove;

[0008] A fixing plate is arranged inside the fixing groove, a docking groove is opened at one end of the fixing plate, side grooves are opened symmetrically on both sides of the docking groove, side sliders are arranged inside the side grooves, and a docking plate is arranged at the other end of the fixing plate;

[0009] A docking male plug is provided with a docking groove at one end of the docking male plug, which is connected to the docking plate through the docking groove. A male plug connector is provided on the surface of the docking male plug, and a docking female plug is provided at the other end of the docking male plug, and a female plug connection block is provided on the surface of the docking female plug.

[0010] Preferably, the insert blocks are provided in multiple groups, and the insert blocks are fixedly mounted on the surface of the nuclear power plant heat exchanger shell. Two groups of retaining rings are fixedly provided on the surface of the nuclear power plant heat exchanger shell, and the two groups of retaining rings are symmetrically arranged on both sides of the nuclear power plant heat exchanger shell.

[0011] Preferably, a No. 1 limit bar is symmetrically provided on the inner wall of the slide groove, and the No. 1 limit bar is slidably arranged with the limit column. The limit column is a column structure with a semicircular cross-section. A No. 2 limit bar is symmetrically provided on both sides of the limit column. The No. 2 limit bar cooperates with the No. 1 limit bar to prevent the limit column from detaching from the inside of the slide groove.

[0012] Preferably, the elastic support member is arranged between the limiting column and the inner wall of the slide groove, and the two sides of the elastic support member are in a "V"-shaped spring sheet structure, and the tips of the "V"-shaped spring sheets on both sides of the elastic support member are opposite to each other. When compressed to the limit, the tips of the "V"-shaped spring sheets on both sides of the elastic support member just touch each other.

[0013] Preferably, a slot is provided on the surface of the mounting block, and the mounting block is inserted into the surface of the insertion block through the slot. Limiting slots are symmetrically provided on both sides of the slot, and the inner wall of the limiting slot is slidably arranged with the limiting column. The mounting block is fixedly connected to the sound insulation inner sealing plate, the sound insulation inner sealing plate is fixedly bonded to the sound insulation cotton, and the sound insulation cotton is fixedly bonded to the sound insulation outer sealing plate.

[0014] Preferably, the fixing plates are provided in multiple groups, the fixing plates are in an arc-shaped plate structure, the fixing plates fit the inner wall of the fixing groove, the fixing plates and the docking plates are an integral structure, and the surfaces of the docking plates are provided with rotation holes that pass through both sides of the docking plates.

[0015] Preferably, a guide column is fixedly installed inside the side groove, the inner wall of the side groove is slidably arranged with the side slider, a guide hole is opened on the surface of the side slider, a damping ring is provided inside the guide hole, the inner wall of the guide hole is fitted with the guide column through the damping ring, and a rotating rod is fixedly connected between the two groups of side sliders inside the same group of fixed plates, the rotating rod is rotatably inserted into the inside of the rotating hole, a compression spring is provided between the side slider and the inner wall of the end of the side groove away from the docking plate, and the compression spring is sleeved on the surface of the guide column.

[0016] Preferably, the docking male plug is fixedly connected to the male plug connector, one end of the male plug connector extends out of the docking male plug, and a card slot and a number one guide surface are provided on the side of the end of the male plug connector extending out of the docking male plug.

[0017] Preferably, one end of the docking female plug is fixedly connected to the docking plate, the docking female plug is fixedly connected to the female plug connecting block, a female plug docking groove is provided on one side of the female plug connecting block, a telescopic groove is provided on one side of the female plug docking groove, a telescopic hole is provided on the inner wall of the telescopic groove, the telescopic hole passes through the inner wall of the telescopic groove and the surface of the female plug connecting block, a card block is slidably inserted into the inner wall of the telescopic groove, a No. 2 guide surface is provided on the end of the card block away from the telescopic hole, a pull rod is fixedly connected to the end of the card block close to the telescopic hole, a spherical pull head is fixedly provided on the end of the pull rod away from the card block, the pull rod is slidably inserted into the inside of the telescopic hole, a reset spring is provided between the side of the card block close to the telescopic hole and the inner wall of the telescopic groove, and the reset spring is sleeved on the surface of the pull rod.

[0018] A heat exchanger for a nuclear power plant comprises the above-mentioned silencer structure.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention proposes a sound insulation structure, in which a sound insulation board is formed by multiple groups of sound insulation outer sealing plates, multiple groups of sound insulation cotton, and sound insulation inner sealing plates to wrap the shell of a nuclear power plant heat exchanger. The shell of the nuclear power plant heat exchanger and the sound insulation board are non-rigidly connected by insert blocks and mounting blocks, and the sound insulation board is elastically fixed by a fixing plate. When the water inside the shell of the nuclear power plant heat exchanger boils, the noise generated is silenced by the sound insulation board, thereby reducing the transmission of noise. In addition, multiple groups of sound insulation boards are provided, which facilitates replacement when damaged, thereby reducing replacement costs.

[0021] At the same time, the non-rigid connection between the sound insulation board and the nuclear power plant heat exchanger shell and the elastic fixation of the fixing plate to the sound insulation board reduce the vibration of the sound insulation board, thereby reducing the noise generation, solving the problem, reducing noise pollution to the surrounding environment, and ensuring the physical and mental health of the surrounding staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0024] Figure 3 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0025] Figure 4 It is a partial cross-sectional structural schematic diagram of the present invention;

[0026] Figure 5 For the present invention Figure 4 The enlarged structural diagram at C in the middle;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of the shell of the nuclear power plant heat exchanger of the present invention;

[0028] Figure 7 For the present invention Figure 6 The enlarged structural diagram at D in the middle;

[0029] Figure 8 This is a schematic diagram of the cross-sectional structure of the sound insulation board of the present invention;

[0030] Figure 9 This is a schematic diagram of the male plug structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the female connector structure of the present invention;

[0032] Figure 11 For the present invention Figure 10 The enlarged structural diagram at E in the middle;

[0033] Figure 12 This is a schematic diagram of the fixed plate structure of the present invention;

[0034] Figure 13 It is a schematic structural diagram of the side slider of the present invention.

[0035] In the figure: nuclear power plant heat exchanger shell 1, retaining ring 11, plug block 12, slide groove 13, No. 1 limit strip 14, sound insulation outer sealing plate 2, fixing groove 21, silencer cotton 22, sound insulation inner sealing plate 23, mounting block 24, slot 25, limit slot 26, fixing plate 3, docking groove 31, side groove 32, guide column 33, docking plate 34, rotation hole 35, compression spring 36, side slider 4, guide hole 41, rotating rod 42, docking male plug 5, male plug connector 51, card slot 52, No. 1 introduction surface 53, docking female plug 6, female plug connecting block 61, female plug docking groove 62, telescopic slot 63, telescopic hole 64, card block 7, No. 2 introduction surface 71, pull rod 72, return spring 73, limit column 8, No. 2 limit strip 81, elastic support member 9. DETAILED DESCRIPTION

[0036] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figures 1-13 , the present invention provides a technical solution:

[0038] A sound-absorbing structure, comprising:

[0039] The plug-in block 12 has symmetrical grooves 13 on both sides of the plug-in block 12, and a limiting column 8 and an elastic support member 9 are arranged inside the slide groove 13. The surface of the plug-in block 12 is sleeved with a mounting block 24, and the surface of the mounting block 24 is provided with a sound insulation inner sealing plate 23, and the surface of the sound insulation inner sealing plate 23 is provided with a sound insulation cotton 22, and the surface of the sound insulation cotton 22 is provided with a sound insulation outer sealing plate 2, and a fixing groove 21 is provided on the surface of the sound insulation outer sealing plate 2. The plug-in block 12 is provided with multiple groups, and the plug-in block 12 is fixedly installed on the surface of the nuclear power plant heat exchanger shell 1, and two groups of retaining rings 11 are fixedly provided on the surface of the nuclear power plant heat exchanger shell 1, and the two groups of retaining rings 11 are symmetrically arranged on both sides of the nuclear power plant heat exchanger shell 1, and the inner wall of the slide groove 13 is symmetrically provided with a No. 1 limiting strip 14, and the No. 1 limiting strip 14 is slidably arranged with the limiting column 8, and the limiting column 8 has a column structure with a semicircular cross section. A second limiting strip 81 is symmetrically provided on both sides of the chute 13, and the second limiting strip 81 cooperates with the first limiting strip 14 to prevent the limiting column 8 from escaping from the inside of the slide groove 13. The elastic support member 9 is provided between the limiting column 8 and the inner wall of the slide groove 13. The two sides of the elastic support member 9 are in a "V"-shaped spring plate structure, and the tips of the "V"-shaped spring plates on both sides of the elastic support member 9 are opposite. When compressed to the limit, the tips of the "V"-shaped spring plates on both sides of the elastic support member 9 just touch each other. A slot 25 is provided on the surface of the mounting block 24, and the mounting block 24 is inserted into the surface of the insertion block 12 through the slot 25. Limiting grooves 26 are symmetrically provided on both sides of the slot 25, and the inner wall of the limiting groove 26 is slidably arranged with the limiting column 8. The mounting block 24 is fixedly connected to the sound insulation inner sealing plate 23, the sound insulation inner sealing plate 23 is fixedly bonded to the sound insulation cotton 22, and the sound insulation cotton 22 is fixedly bonded to the sound insulation outer sealing plate 2;

[0040] The fixing plate 3 is arranged inside the fixing groove 21, and a docking groove 31 is opened at one end of the fixing plate 3. Side grooves 32 are symmetrically opened on both sides of the docking groove 31. Side sliders 4 are arranged inside the side grooves 32. The other end of the fixing plate 3 is provided with a docking plate 34. The fixing plate 3 is provided with multiple groups. The fixing plate 3 is an arc-shaped plate structure. The fixing plate 3 fits the inner wall of the fixing groove 21. The fixing plate 3 and the docking plate 34 are an integral structure. A rotating hole 35 is opened on the surface of the docking plate 34. The rotating hole 35 runs through both sides of the docking plate 34. The inside of the side groove 32 A guide column 33 is fixedly installed, and the inner wall of the side groove 32 is slidably set with the side slider 4. A guide hole 41 is opened on the surface of the side slider 4, and a damping ring is set inside the guide hole 41. The inner wall of the guide hole 41 fits with the guide column 33 through the damping ring. A rotating rod 42 is fixedly connected between the two groups of side sliders 4 inside the same group of fixed plates 3. The rotating rod 42 is rotatably inserted into the inside of the rotating hole 35. A compression spring 36 is provided between the side slider 4 and the inner wall of the end of the side groove 32 away from the docking plate 34. The compression spring 36 is sleeved on the surface of the guide column 33.

[0041] The docking male plug 5 has a docking groove 31 at one end of the docking male plug 5, and the docking male plug 5 is connected to the docking plate 34 through the docking groove 31. The surface of the docking male plug 5 is provided with a male plug connector 51, and the other end of the docking male plug 5 is provided with a docking female plug 6. The surface of the docking female plug 6 is provided with a female plug connecting block 61. The docking male plug 5 is fixedly connected to the male plug connector 51, and one end of the male plug connector 51 extends out of the docking male plug 5, and the side surface of the male plug connector 51 extending out of the end of the docking male plug 5 is provided with a card slot 52 and a No. 1 guide surface 53. One end of the docking female plug 6 is fixedly connected to the docking plate 34, and the docking female plug 6 is fixedly connected to the female plug connecting block 61. One side of the female plug connecting block 61 is provided with The female plug docking slot 62 has a telescopic slot 63 on one side of the female plug docking slot 62, and a telescopic hole 64 is provided on the inner wall of the telescopic slot 63. The telescopic hole 64 passes through the inner wall of the telescopic slot 63 and the surface of the female plug connecting block 61. The inner wall of the telescopic slot 63 is slidably plugged with a card block 7, and the end of the card block 7 away from the telescopic hole 64 is provided with a No. 2 guide surface 71. The end of the card block 7 close to the telescopic hole 64 is fixedly connected to a pull rod 72, and the end of the pull rod 72 away from the card block 7 is fixedly provided with a spherical pull head. The pull rod 72 is slidably plugged into the inside of the telescopic hole 64, and a reset spring 73 is provided between the side of the card block 7 close to the telescopic hole 64 and the inner wall of the telescopic slot 63. The reset spring 73 is sleeved on the surface of the pull rod 72.

[0042] A heat exchanger for a nuclear power plant comprises the above-mentioned silencer structure.

[0043] When in use, the slot 25 is aligned with the retaining ring 11 and is sleeved onto the surface of the retaining ring 11. During the sleeve installation process, the side wall of the slot 25 squeezes the limit column 8, causing the limit column 8 to retract into the interior of the slide groove 13. When the limit column 8 is aligned with the limit groove 26, the rebound force of the elastic support member 9 causes the limit column 8 to enter the interior of the limit groove 26, positioning the mounting block 24 on the surface of the insert block 12, so that the mounting block 24 and the insert block 12 form a non-rigid connection, thereby fixing the sound insulation outer sealing plate 2 and the sound insulation cotton 22 and the sound insulation inner sealing plate 23, the sound insulation outer sealing plate 2 located on the most two sides is against the retaining ring 11, and then the fixing plate 3 is fitted into the interior of the fixing groove 21. After multiple sets of fixing plates 3 have been wound around the interior of the fixing groove 21, the male connector 51 is inserted into the inner wall of the female docking groove 62, and the block 7 is retracted into the interior of the telescopic groove 63 by squeezing the No. 1 guide surface 53 and the No. 2 guide surface 71. When the male connector When the head 51 is inserted into the bottom of the female plug docking slot 62, the slot 52 is just aligned with the telescopic slot 63, and the rebound force of the reset spring 73 causes the card block 7 to be stuck into the inside of the slot 52, thereby connecting the docking male plug 5 and the docking female plug 6, and fixing the fixing plate 3 to the inside of the fixing slot 21. At this time, multiple groups of sound insulation outer sealing plates 2 and multiple groups of sound-absorbing cotton 22 and sound insulation inner sealing plates 23 form a sound insulation board to wrap the nuclear power plant heat exchanger shell 1. The nuclear power plant heat exchanger shell 1 and the sound insulation board are formed into a non-rigid connection through the insertion block 12 and the mounting block 24, and the sound insulation board is elastically fixed by the fixing plate 3. When the water inside the nuclear power plant heat exchanger shell 1 boils, the noise generated is silenced by the sound insulation board, reducing the transmission of noise. At the same time, the non-rigid connection between the sound insulation board and the nuclear power plant heat exchanger shell 1 and the elastic fixation of the sound insulation board by the fixing plate 3 reduce the vibration of the sound insulation board, thereby reducing the generation of noise.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A sound-absorbing structure, characterized in that: The noise reduction structure comprises: An insert block (12), slide grooves (13) are symmetrically provided on both sides of the insert block (12), a limiting column (8) and an elastic support member (9) are provided inside the slide groove (13), a mounting block (24) is sleeved on the surface of the insert block (12), a sound insulation inner sealing plate (23) is provided on the surface of the mounting block (24), a sound insulation inner sealing plate (23) is provided on the surface of the sound insulation cotton (22), a sound insulation outer sealing plate (2) is provided on the surface of the sound insulation cotton (22), and a fixing groove (21) is provided on the surface of the sound insulation outer sealing plate (2); A fixing plate (3), the fixing plate (3) is arranged inside the fixing groove (21), a docking groove (31) is provided at one end of the fixing plate (3), side grooves (32) are symmetrically provided on both sides of the docking groove (31), side sliders (4) are provided inside the side grooves (32), and a docking plate (34) is provided at the other end of the fixing plate (3); A docking male plug (5) is provided at one end of the docking male plug (5), and a docking groove (31) is provided. The docking male plug (5) is connected to the docking plate (34) through the docking groove (31). A male plug connector (51) is provided on the surface of the docking male plug (5). A docking female plug (6) is provided at the other end of the docking male plug (5), and a female plug connection block (61) is provided on the surface of the docking female plug (6).

2. A sound-absorbing structure according to claim 1, characterized in that: The insert blocks (12) are provided in multiple groups. The insert blocks (12) are fixedly mounted on the surface of the nuclear power plant heat exchanger shell (1). Two groups of retaining rings (11) are fixedly provided on the surface of the nuclear power plant heat exchanger shell (1). The two groups of retaining rings (11) are symmetrically arranged on both sides of the nuclear power plant heat exchanger shell (1).

3. A sound-absorbing structure according to claim 2, characterized in that: The inner wall of the chute (13) is symmetrically provided with a No. 1 limit strip (14), which is slidably provided with the limit strip (14) and the limit column (8), and the limit column (8) is a column structure with a semicircular cross section, and the two sides of the limit column (8) are symmetrically provided with a No. 2 limit strip (81), which cooperates with the No. 1 limit strip (14) to prevent the limit column (8) from escaping from the inside of the chute (13).

4. A sound-absorbing structure according to claim 3, characterized in that: The elastic support member (9) is arranged between the limiting column (8) and the inner wall of the slide groove (13), and the two sides of the elastic support member (9) are in a "V"-shaped spring sheet structure, and the tips of the "V"-shaped spring sheets on both sides of the elastic support member (9) are opposite to each other. When compressed to the limit, the tips of the "V"-shaped spring sheets on both sides of the elastic support member (9) just abut against each other.

5. A sound-absorbing structure according to claim 4, characterized in that: A slot (25) is provided on the surface of the mounting block (24), and the mounting block (24) is plugged into the surface of the plug block (12) through the slot (25). Limiting slots (26) are symmetrically provided on both sides of the slot (25), and the inner wall of the limiting slot (26) is slidably arranged with the limiting column (8). The mounting block (24) is fixedly connected to the sound insulation inner sealing plate (23), the sound insulation inner sealing plate (23) is fixedly bonded to the sound insulation cotton (22), and the sound insulation cotton (22) is fixedly bonded to the sound insulation outer sealing plate (2).

6. A sound-absorbing structure according to claim 5, characterized in that: The fixing plates (3) are provided in multiple groups. The fixing plates (3) are in an arc-shaped plate-like structure. The fixing plates (3) are fitted with the inner wall of the fixing groove (21). The fixing plates (3) and the docking plates (34) are an integral structure. The surfaces of the docking plates (34) are provided with rotation holes (35), and the rotation holes (35) pass through both sides of the docking plates (34).

7. A sound-absorbing structure according to claim 6, characterized in that: A guide column (33) is fixedly installed inside the side groove (32), and the inner wall of the side groove (32) is slidably arranged with the side slider (4). A guide hole (41) is opened on the surface of the side slider (4), and a damping ring is arranged inside the guide hole (41). The inner wall of the guide hole (41) is fitted with the guide column (33) through the damping ring, and a rotating rod (42) is fixedly connected between the two groups of side sliders (4) inside the same group of fixed plates (3). The rotating rod (42) is rotatably inserted into the inside of the rotating hole (35). A compression spring (36) is arranged between the side slider (4) and the inner wall of the end of the side groove (32) away from the docking plate (34), and the compression spring (36) is sleeved on the surface of the guide column (33).

8. The sound-absorbing structure according to claim 7, characterized in that: The docking male plug (5) is fixedly connected to the male plug connector (51), one end of the male plug connector (51) extends out of the docking male plug (5), and a slot (52) and a first guide surface (53) are provided on the side surface of the end of the male plug connector (51) extending out of the docking male plug (5).

9. A sound-absorbing structure according to claim 8, characterized in that: One end of the docking female plug (6) is fixedly connected to a docking plate (34), the docking female plug (6) is fixedly connected to the female plug connection block (61), a female plug docking groove (62) is provided on one side of the female plug docking groove (62), a telescopic groove (63) is provided on one side of the female plug docking groove (62), a telescopic hole (64) is provided on the inner wall of the telescopic groove (63), the telescopic hole (64) passes through the inner wall of the telescopic groove (63) and the surface of the female plug connection block (61), and a clamping block (7) is slidably plugged into the inner wall of the telescopic groove (63). A second introduction surface (71) is provided at one end of the block (7) away from the telescopic hole (64), a pull rod (72) is fixedly connected to one end of the block (7) close to the telescopic hole (64), a spherical pull head is fixedly provided at one end of the pull rod (72) away from the block (7), the pull rod (72) is slidably inserted into the interior of the telescopic hole (64), a return spring (73) is provided between one side of the block (7) close to the telescopic hole (64) and the inner wall of the telescopic groove (63), and the return spring (73) is sleeved on the surface of the pull rod (72).

10. A heat exchanger for a nuclear power plant, characterized in that: The invention comprises the sound-absorbing structure according to any one of claims 1 to 9.

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