CN213575787U - Special breather valve for nuclear power K1-class electrical instrument equipment - Google Patents
Special breather valve for nuclear power K1-class electrical instrument equipment Download PDFInfo
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- CN213575787U CN213575787U CN202022452502.1U CN202022452502U CN213575787U CN 213575787 U CN213575787 U CN 213575787U CN 202022452502 U CN202022452502 U CN 202022452502U CN 213575787 U CN213575787 U CN 213575787U
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Abstract
The utility model discloses a special breather valve for nuclear power K1 type electrical instrument equipment, which belongs to the field of nuclear power equipment, and comprises a valve body, wherein a first vent hole is arranged on the valve body; the locking piece is connected to one end of the valve body in a sealing mode, and a first sealing ring made of silicon rubber is arranged between the locking piece and the valve body; the protective breathable net plate component is formed by pressing a stainless steel net and is embedded at the other end of the valve body, and the protective breathable net plate component is provided with a second vent hole; the breathing valve cover sleeve is arranged at the other end of the valve body in a sealing manner, and a second sealing ring made of silicon rubber is arranged between the breathing valve cover sleeve and the valve body; the breather valve is sleeved with the third vent hole, the first vent hole, the second vent hole and the third vent hole are communicated, the air permeability of the breather valve is improved, the air permeability and the high protection performance of the breather valve can be guaranteed simultaneously by the protective air permeable net plate component, the silicon rubber material has good irradiation resistance and high temperature resistance, and the service life of the whole breather valve is effectively prolonged.
Description
Technical Field
The utility model relates to a nuclear power equipment technical field especially relates to a special breather valve of nuclear power K1 type electricity appearance equipment.
Background
The breather valve is a component used for maintaining the balance of air pressure inside and outside the equipment, and can discharge condensed water in the equipment while ensuring the protection level of the equipment. The K1 type electrical instrument equipment in the containment vessel of the nuclear power plant executes the safety function of the nuclear power plant, namely, the normal operation of the equipment function is kept under the serious benchmark accident of the nuclear power. Severe accident environments of a nuclear power plant include high temperature, high humidity, instantaneous high pressure, high irradiation, acid-base solution and the like, and under the extreme conditions, a breather valve is required to keep extremely high air permeability so as to prevent instantaneous high pressure from damaging the structure of electrical equipment.
At present, most of the existing breather valves are made of high polymer materials in a casting type or formed by compression molding of metal particles from the perspective of sealing materials and sealing structures, wherein the former has poor high temperature resistance and poor irradiation resistance, and the latter has the problems of low air permeability and the like, so that the existing breather valves cannot simultaneously meet the high-performance requirements under the severe environment peculiar to nuclear power.
Therefore, it is necessary to provide a breather valve with radiation resistance, high air permeability and high protection for nuclear power K1 electrical equipment to solve the above technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a special breather valve of nuclear power K1 type electricity appearance equipment, its resistant irradiation performance is good, and the air permeability is high, and the protectiveness is high.
In order to achieve the above object, the utility model adopts the following technical scheme:
a special breather valve for nuclear power K1-class electrical instrument equipment comprises:
the valve body is provided with a first vent hole;
the locking piece is connected to one end of the valve body in a sealing mode, a first sealing ring is arranged between the locking piece and the valve body, and the first sealing ring is made of silicon rubber;
the protective breathable net plate component is embedded at the other end of the valve body and is provided with a second vent hole, and the protective breathable net plate component is formed by pressing a stainless steel net;
the breathing valve cover sleeve is arranged at the other end of the valve body in a sealing manner, a second sealing ring is arranged between the breathing valve cover sleeve and the valve body, and the second sealing ring is made of silicon rubber; the breathing valve is characterized in that a third vent hole is formed in the breathing valve cover sleeve, and the first vent hole, the second vent hole and the third vent hole are communicated.
As a preferred technical scheme, the protection breathable net plate component comprises:
mesh board and fine and close woven mesh, the mesh board with fine and close woven mesh follows the axial interval of valve body sets up, just the mesh board is located fine and close woven mesh's the outside, be provided with on the mesh board second venthole, the mesh board with fine and close through the air cavity intercommunication between the woven mesh.
As a preferred technical scheme, the protection breathable net plate component further comprises:
the annular connecting plate is used for connecting the mesh plate and the compact woven mesh, and the connecting plate is connected to the valve body in an interference manner.
As a preferred technical scheme, the protective breathable net plate component is of an integrally formed structure.
As a preferred technical solution, the valve body includes:
the breathing valve comprises a first connecting portion, a bridging portion and a second connecting portion which are connected, wherein the first connecting portion is connected with a locking member, the periphery of the first connecting portion is provided with a first vent hole, the bridging portion is of a hexagonal structure, a protective breathable net plate assembly is embedded in the second connecting portion, the end face of the protective breathable net plate assembly does not protrude out of the end face of the second connecting portion, and the breathing valve cover is sleeved on the periphery of the second connecting portion in a sealing mode.
As a preferred technical scheme, one end of the locking piece, which is close to the breather valve cover sleeve, is provided with a piercing bulge, and the piercing bulge is made of a metal material.
As a preferred technical solution, the locker comprises:
the edge of the locking nut is provided with the piercing bulge, and the periphery of the first connecting portion is provided with an external thread matched with the locking nut.
As the preferred technical scheme, the breathing valve cap is provided with an internal thread, and the periphery of the second connecting part is correspondingly provided with an external thread.
As a preferred solution, the respiratory valve cover sleeve comprises:
the connecting ring plate is circumferentially provided with the third vent hole, and the inner wall of the connecting ring plate is provided with the internal thread;
and the end cover is arranged at one end, far away from the valve body, of the connecting ring plate.
As the preferred technical scheme, the inside of breather valve lid cover is provided with the location step, the valve body butt in the location step, and the butt department is equipped with the second sealing washer.
The utility model has the advantages that:
the utility model provides a special breather valve of nuclear power K1 class electricity appearance equipment is equipped with the first sealing washer of being made by silicon rubber between retaining member and the valve body, is equipped with the second sealing washer of being made by silicon rubber between breather valve cover and the valve body, and the silicon rubber material has good resistant irradiation and high temperature resistance, effectively prolongs the life of whole breather valve; the first sealing ring is arranged between the locking piece and the valve body, so that a structural gap between the locking piece and the valve body can be effectively sealed, and the requirement of high protection grade on the inner side of the breather valve is met; through set up the second sealing washer between breather valve lid cover and valve body, can effectively seal the structure clearance between the two, realize the high protection level demand in the breather valve outside. Be provided with first air vent on the valve body, protection ventilative screen assembly inlays and locates on the valve body and has the second air vent, and protection ventilative screen assembly is formed by the stainless steel mesh suppression, can guarantee the gas permeability and the high protectiveness of breather valve simultaneously, and the breather valve sheathes in and is equipped with the third air vent, and first air vent, second air vent and third air vent are linked together, effectively improve the air permeability of this breather valve. The breather valve is simple and exquisite in structure, convenient to produce and assemble and capable of meeting the use requirements of nuclear power K1-type electric instrument equipment.
Drawings
Fig. 1 is a schematic structural view of a breather valve special for nuclear power K1 electrical instrument equipment provided by the specific embodiment of the present invention;
fig. 2 is a sectional view of a breather valve special for nuclear power K1 electrical instrument equipment, provided by the specific embodiment of the present invention;
fig. 3 is an exploded view of a breather valve special for nuclear power K1 electrical instrument equipment, provided by the embodiment of the present invention;
fig. 4 is a schematic structural view of the breathing valve cover provided by the embodiment of the present invention after a part of the connecting ring plate is removed.
In the figure:
1. a valve body; 11. a first connection portion; 111. a first vent hole; 12. a bridge portion; 13. a second connecting portion;
2. a locking member; 21. locking the nut; 22. piercing the bulge;
3. a first seal ring;
4. a protective breathable net plate assembly; 41. a mesh plate; 411. a second vent hole; 42. densely weaving a net; 43. a connecting plate; 44. a gas chamber;
5. a breather valve cover sleeve; 51. a connecting ring plate; 52. an end cap; 511. a third vent hole;
6. and a second seal ring.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The embodiment provides a special breather valve for nuclear power K1-class electrical apparatus equipment, and as shown in fig. 1 to 4, the breather valve comprises a valve body 1, a locking member 2, a protective breathable net plate assembly 4 and a breather valve cover sleeve 5, wherein the valve body 1 is a main structure of the breather valve, the valve body 1 is provided with an air flow channel along the axial center of the valve body, and the valve body 1 is provided with a first vent hole 111 for increasing the air inlet and outlet amount in the valve body 1. Retaining member 2 sealing connection is equipped with first sealing washer 3 in the one end of valve body 1 between retaining member 2 and the valve body 1, and first sealing washer 3 is made by silicon rubber. The protection ventilative screen assembly 4 inlays the other end of locating valve body 1, and protection ventilative screen assembly 4 has second venthole 411, and protection ventilative screen assembly 4 is formed by the stainless steel net suppression, can improve the gas permeability and the protection grade of valve body 1 simultaneously. The other end of the valve body 1 is located to the sealed cover of breather valve lid cover 5, is equipped with second sealing washer 6 between breather valve lid cover 5 and the valve body 1, and second sealing washer 6 is made by silicon rubber. The breathing valve cover sleeve 5 is provided with a third vent hole 511 for realizing the exchange of gas between the inside of the valve body 1 and the outside. The first vent hole 111, the second vent hole 411 and the third vent hole 511 are communicated, so that the air permeability of the breather valve is effectively improved. The silicon rubber material has good irradiation resistance and high temperature resistance, and can effectively prolong the service life of the whole breather valve; the first sealing ring 3 is arranged between the locking member 2 and the valve body 1, so that a structural gap between the locking member and the valve body can be effectively sealed, and the requirement of high protection grade on the inner side of the breather valve is met; through set up second sealing washer 6 between breather valve lid cover 5 and valve body 1, can effectively seal the structure clearance between the two, realize the high protection level demand in the breather valve outside. The breather valve is simple and exquisite in structure, convenient to produce and assemble and capable of meeting the use requirements of nuclear power K1-type electric instrument equipment.
Specifically, the valve body 1 includes a first connecting portion 11, a bridge portion 12, and a second connecting portion 13 connected to each other, the first connecting portion 11 is connected to the locking member 2, and a first vent hole 111 is formed in an outer periphery of the first connecting portion 11. Optionally, the number of the first ventilation holes 111 is multiple, for example, four in this embodiment, and the four first ventilation holes 111 are uniformly distributed on the periphery of the first connection portion 11 along the circumference, so as to improve the ventilation uniformity.
Optionally, retaining member 2 includes lock nut 21, and this lock nut 21 is the hexagonal structure, and the periphery of first connecting portion 11 is equipped with the external screw thread with lock nut 21 looks adaptation, realizes retaining member 2 and valve body 1 threaded connection. Preferably, the edge of the locking nut 21 near one end of the breather valve cover sleeve 5 is provided with a piercing protrusion 22, and the piercing protrusion 22 is made of metal material. The above-mentioned structure of retaining member 2 can reliably guarantee on the one hand reliably to lock the breather valve reliably on the electricity appearance equipment under the environment of harsh high pressure difference, effectively avoids the stress under the pressure effect to drop, and on the other hand it has the insulating plastic-sprayed layer that impales on electricity appearance equipment top layer and realizes electrically conductive effect to realize the electrically conductive continuity of valve body 1 and electricity appearance equipment body.
The bridging portion 12 is a hexagonal structure for fastening bridging, and the structure has a large body and a flat crimping surface, and has the functions of enhancing fastening and surface sealing. Optionally, the outer diameter of the bridge part 12 is the same as that of the locking member 2, ensuring compactness.
The protection breathable net plate component 4 is embedded in the second connecting portion 13, the end face of the protection breathable net plate component does not protrude out of the end face of the second connecting portion 13, and the breathing valve cover sleeve 5 is sleeved on the periphery of the second connecting portion 13 in a sealing mode.
Optionally, the protective breathable net plate assembly 4 includes a net plate 41 and a dense woven net 42, the net plate 41 and the dense woven net 42 are arranged at intervals along the axial direction of the valve body 1, the net plate 41 is located outside the dense woven net 42, a second ventilation hole 411 is arranged on the net plate 41 to enhance ventilation performance, the dense woven net 42 has a regular dense structure to play a high protection role, and the net plate 41 and the dense woven net 42 are communicated with each other through a gas chamber 44. Preferably, the second vent holes 411 are provided in plurality, and the plurality of second vent holes 411 are uniformly distributed on the mesh plate 41. The protective air-permeable net plate component 4 is preferably an air-permeable structure formed by pressing stainless steel nets according to specific rules and requirements, and can simultaneously realize high protection of equipment under the condition of meeting high air permeability.
Further optionally, the protective breathable net plate assembly 4 further comprises an annular connecting plate 43, the connecting plate 43 is used for connecting the mesh plate 41 and the dense woven net 42, when assembled with the valve body 1, an outer peripheral side wall of the connecting plate 43 is in interference connection with an inner peripheral side wall of the second connecting portion 13 of the valve body 1, preferably, an inner portion of the valve body 1 is provided with a positioning step surface, and an end portion of the connecting plate 43 abuts against the positioning step surface. Further preferably, the axial distance between the positioning step surface and the outer end surface of the second connecting part 13 is not less than the axial dimension of the protective breathable net plate component 4, so that the whole protective breathable net plate component 4 is embedded in the valve body 1, and the structural compactness of the breather valve is maintained.
The protective breathable net plate component 4 in the embodiment is of an integrally formed structure, namely, the net hole plate 41, the connecting plate 43 and the dense woven net 42 are integrally formed and then embedded into the second connecting part 13 of the valve body 1, so that the structural strength is enhanced. Experiments prove that under the same protection level, the air permeability of the special breather valve for the nuclear power K1 electrical instrument equipment is multiple times of that of the breather valve in the same type in the market, so that the service life of the electrical instrument equipment using the special breather valve is far longer than that of the similar equipment in the market.
As shown in fig. 4, the shaft section of the breathing valve cover sleeve 5 is substantially U-shaped, and includes a connecting ring plate 51 and an end cover 52, and the end cover 52 is disposed at one end of the connecting ring plate 51 far from the valve body 1. The inner wall of the connecting ring plate 51 is provided with internal threads, and the periphery of the second connecting part 13 is correspondingly provided with external threads so as to realize the thread locking of the breather valve cover sleeve 5 and the valve body 1. A plurality of third venting holes 511 are formed at intervals in the circumferential direction of the connection ring plate 51, and are preferably distributed at equal intervals, and the third venting holes 511 are used for realizing the exchange of gas between the inside of the valve body 1 and the outside.
Preferably, the inside of breather valve lid cover 5 is provided with the location step, and the tip of valve body 1 butt in this location step, and the butt department is equipped with second sealing washer 6. The mode of the threaded connection of the breather valve cover sleeve 5 and the valve body 1 and the arrangement of the second sealing ring 6 eliminate the assembly clearance between the breather valve cover sleeve and the valve body 1, thereby being beneficial to ensuring the protection effect.
The breather valve cover 5 in this embodiment adopts the stainless steel to make to further improve structural strength, satisfy protection level demand.
The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a special breather valve of nuclear power K1 class electrometer equipment which characterized in that includes:
the valve comprises a valve body (1), wherein a first vent hole (111) is formed in the valve body (1);
the locking piece (2) is connected to one end of the valve body (1) in a sealing mode, a first sealing ring (3) is arranged between the locking piece (2) and the valve body (1), and the first sealing ring (3) is made of silicon rubber;
the protective ventilation net plate component (4) is embedded at the other end of the valve body (1), the protective ventilation net plate component (4) is provided with a second ventilation hole (411), and the protective ventilation net plate component (4) is formed by pressing a stainless steel net;
the breather valve cover sleeve (5) is hermetically arranged at the other end of the valve body (1), a second sealing ring (6) is arranged between the breather valve cover sleeve (5) and the valve body (1), and the second sealing ring (6) is made of silicon rubber; be equipped with third air vent (511) on breather valve cover (5), first air vent (111) second air vent (411) with third air vent (511) are linked together.
2. The breather valve special for nuclear power K1-type electrical equipment as claimed in claim 1, wherein the protective gas permeable screen plate assembly (4) comprises:
mesh board (41) and dense mesh grid (42) of weaving, mesh board (41) with dense mesh grid (42) are followed the axial interval of valve body (1) sets up, just mesh board (41) are located the outside of dense mesh grid (42) of weaving, be provided with on mesh board (41) second venthole (411), mesh board (41) with communicate through air cavity (44) between the dense mesh grid (42) of weaving.
3. The breather valve special for nuclear power K1-type electrical equipment as claimed in claim 2, wherein the protective gas permeable screen plate assembly (4) further comprises:
the annular connecting plate (43) is used for connecting the mesh plate (41) and the compact woven mesh (42), and the connecting plate (43) is connected to the valve body (1) in an interference mode.
4. The breather valve special for nuclear power K1-type electrical equipment as claimed in claim 1, wherein the protective breathable net plate component (4) is of an integrally formed structure.
5. The breather valve special for nuclear power K1-type electrical equipment as claimed in claim 1, wherein the valve body (1) comprises:
the breather valve cover comprises a first connecting portion (11), a bridging portion (12) and a second connecting portion (13), wherein the first connecting portion (11) is connected with a locking member (2), a first vent hole (111) is formed in the periphery of the first connecting portion (11), the bridging portion (12) is of a hexagonal structure, a protective breathable net plate component (4) is embedded in the second connecting portion (13), the end face of the protective breathable net plate component does not protrude out of the end face of the second connecting portion (13), and the breather valve cover (5) is sleeved on the periphery of the second connecting portion (13) in a sealing mode.
6. The breather valve special for nuclear power K1 electrical equipment as claimed in claim 5, wherein a piercing protrusion (22) is provided at one end of the locking member (2) close to the breather valve cover sleeve (5), and the piercing protrusion (22) is made of metal material.
7. The breather valve special for nuclear power K1-type electrical equipment as claimed in claim 6, wherein the locking member (2) comprises:
the edge of the locking nut (21) is provided with the piercing protrusion (22), and the periphery of the first connecting part (11) is provided with an external thread matched with the locking nut (21).
8. The breather valve special for nuclear power K1 electrical equipment as claimed in claim 5, wherein the breather valve cover sleeve (5) is provided with internal threads, and the periphery of the second connecting portion (13) is correspondingly provided with external threads.
9. The breather valve special for nuclear power K1-type electrical equipment as claimed in claim 8, wherein the breather valve cover sleeve (5) comprises:
the connecting ring plate (51) is circumferentially provided with the third vent holes (511), and the inner wall of the connecting ring plate (51) is provided with the internal threads;
and the end cover (52) is arranged at one end of the connecting ring plate (51) far away from the valve body (1).
10. The special breather valve for nuclear power K1-type electrical equipment according to claim 1, wherein a positioning step is arranged inside the breather valve cover sleeve (5), the valve body (1) abuts against the positioning step, and the second sealing ring (6) is arranged at the abutting position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022452502.1U CN213575787U (en) | 2020-10-29 | 2020-10-29 | Special breather valve for nuclear power K1-class electrical instrument equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022452502.1U CN213575787U (en) | 2020-10-29 | 2020-10-29 | Special breather valve for nuclear power K1-class electrical instrument equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213575787U true CN213575787U (en) | 2021-06-29 |
Family
ID=76531713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022452502.1U Active CN213575787U (en) | 2020-10-29 | 2020-10-29 | Special breather valve for nuclear power K1-class electrical instrument equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213575787U (en) |
-
2020
- 2020-10-29 CN CN202022452502.1U patent/CN213575787U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 201600 building 6, No. 901, Xinge Road, Xinqiao Town, Songjiang District, Shanghai Patentee after: Shanghai Yuzhang Electric Co.,Ltd. Address before: 201612 building 7 and 8, no.800, Jindu West Road, Xinqiao Town, Songjiang District, Shanghai Patentee before: SHANGHAI REGEON ELECTRIC Co.,Ltd. |
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| CP03 | Change of name, title or address |