CN214888934U - Self-opening anti-tornado valve - Google Patents
Self-opening anti-tornado valve Download PDFInfo
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- CN214888934U CN214888934U CN202121757679.0U CN202121757679U CN214888934U CN 214888934 U CN214888934 U CN 214888934U CN 202121757679 U CN202121757679 U CN 202121757679U CN 214888934 U CN214888934 U CN 214888934U
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Abstract
The utility model provides a self-opening anti-tornado valve, which comprises a valve body, wherein a blade is rotationally connected with the valve body through a shaft; the shaft is fixedly connected with the edge of the blade; the shaft is positioned in a valve seat with a dovetail-shaped cross section, and two ends of the valve seat are fixedly connected with the valve body; the limiting mechanism is fixed in the valve body and used for limiting when the blades are opened, so that the opening angle of the blades is not more than 90 degrees; one end of the spring pull rod is fixed on a frame of the valve body, one end of the spring is fixed at one end of the spring pull rod, which is far away from the valve body, one end of the spring, which is far away from the spring pull rod, is fixedly connected with the shaft through the main spiral arm, the spring is in a stretching state when the blade is opened, and the spring is recovered to be normal when the blade is closed. The utility model discloses simple structure is stable, and reliable performance is high, and the formula of relying on oneself is opened, and the start threshold value is low, self-closing when passing through tornado closes safety.
Description
Technical Field
The utility model belongs to the technical field of fluid control, a self-operated open-type prevents tornado valve is related to.
Background
The tornado-proof valve of the existing nuclear power system mostly adopts an electric or pneumatic quick-closing valve, if the faults such as power failure or gas failure caused by special accidents do not occur in tornado, the valve executing the function can execute a closing function due to the occurrence of the accidents, and then the subsequent required air volume is influenced. The self-operated closing valves adopted by individual tornado-proof valves are all spring-assisted to open, the valves are closed by utilizing the gravity of a valve plate and the pressure generated by tornado, the moment of the spring is maximum when the valves are closed, the moment of the gravity of blades is minimum, so that the valves can be closed by overcoming the tension of the spring with large moment, and the valves can be automatically opened if the moment is small, and the reliable closing performance can not be achieved.
Disclosure of Invention
In order to overcome the deficiency among the prior art, the utility model provides a tornado valve is prevented to self-operated open-type, simple structure is stable, reliable performance is high, self-operated opens, closes safety.
In order to realize at least one of the purposes, the technical proposal adopted by the utility model is that the utility model provides a self-opening anti-cyclone valve, which comprises a valve body, and blades are rotationally connected with the valve body through a shaft; the shaft is fixedly connected with the edge of the blade; the shaft is positioned in a valve seat with a dovetail-shaped cross section, and two ends of the valve seat are fixedly connected with the valve body; the limiting mechanism is fixed in the valve body and used for limiting when the blades are opened, so that the opening angle of the blades is not more than 90 degrees; one end of the spring pull rod is fixed on a frame of the valve body, one end of the spring is fixed at one end of the spring pull rod, which is far away from the valve body, one end of the spring, which is far away from the spring pull rod, is fixedly connected with the shaft through the main spiral arm, the spring is in a stretching state when the blade is opened, and the spring is recovered to be normal when the blade is closed.
Furthermore, one end of the shaft extending out of the valve body is fixedly connected with a rotating arm, and each rotating arm is rotatably connected with a connecting rod, so that synchronous linkage of a plurality of blades can be realized, and the integral operation of the valve is ensured; a sealing ring made of rubber is fixed in the dovetail groove of the valve seat and is used for forming a metal-rubber-metal soft sealing structure between the blades when the blades are closed so as to form plane peripheral sealing, and the low leakage grade of the valve is ensured; the guide plate is fixed on the outer side of the valve seat, is parallel to the shaft and is positioned on one side where the medium normally flows in, so that the resistance generated by the valve in the normal medium flow direction can be minimized, and the medium flow required by subsequent equipment is met; both ends of the shaft are mounted in roller bearings of the bearing caps, which can reduce friction generated when the shaft rotates.
Preferably, the limiting mechanism is of an L-shaped structure, one end of the limiting mechanism is fixedly connected with a frame of the valve body, the other end of the limiting mechanism is located on a path where the blade is opened, the other end of the limiting mechanism is provided with an adjusting bolt, and the maximum opening angle of the blade can be limited by rotating the adjusting bolt.
Preferably, the valve body has a plurality of valve seats therein for mounting a plurality of shafts.
Preferably, the cross section of the guide plate is L-shaped or arc-shaped, and the length of the guide plate is the same as that of the blade.
Preferably, an O-ring is disposed between the bearing cap and the gap of the shaft to prevent gas leakage.
The utility model has the advantages that:
the utility model has simple and stable structure and high reliability, and is provided with a limit structure which can freely adjust the angle; the valve seat is in a dovetail shape, so that the resistance to a medium is reduced to the maximum extent; the starting threshold is low by self-operated starting of medium pressure; the valve is automatically closed by the tension of the spring and the pressure of the tornado when the tornado is in use, so that the closing is safe; and the sealing ring is arranged, so that the sealing performance of the valve is guaranteed, and the damage caused by backward flowing of the medium is prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a structural diagram of a self-opening anti-cyclone valve according to an embodiment of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a left side view of fig. 1.
Fig. 4 is a schematic view illustrating the self-opening anti-cyclone valve according to the embodiment of the present invention.
In the figure, 1, a valve body, 2, a blade, 3, a sealing ring, 4, a shaft, 5, a guide plate, 6, a bearing cover, 7, a rotating arm, 8, a connecting rod, 9, a spring pull rod, 10, a spring, 11, a main rotating arm and 12 are limiting mechanisms.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-4, the utility model provides a self-opening anti-tornado valve, which comprises a valve body 1, a blade 2 is rotationally connected with the valve body 1 through a shaft 4; the shaft 4 is fixedly connected with the edge of the blade 2; the shaft 4 is positioned in a valve seat with a dovetail-shaped cross section, two ends of the valve seat are fixedly connected with the valve body 1, and the valve seat is arranged into a dovetail shape to reduce resistance when a medium flows in; the limiting mechanism 12 is fixed inside the valve body 1 and used for limiting when the blade 2 is opened, so that the opening angle of the blade 2 is smaller than 90 degrees; spring pull rod 9 one end is fixed on the frame of valve body 1, and spring 10 one end is fixed in the one end that spring pull rod 9 kept away from valve body 1, and spring 10 deviates from spring pull rod 9's one end and axle 4 through main spiral arm 11 fixed connection, and spring 10 is in extending state when blade 2 opens, and spring 10 resumes normally when blade 2 closes.
Furthermore, one end of the shaft 4 extending out of the valve body 1 is fixedly connected with a radial arm 7, and each radial arm 7 is rotatably connected with a connecting rod 8, so that synchronous linkage of a plurality of blades 2 can be realized, and the integral operation of the valve is ensured; a sealing ring 3 made of rubber is fixed in the dovetail groove of the valve seat and is used for forming a metal-rubber-metal soft sealing structure between the blades 2 when the blades 2 are closed so as to form plane peripheral sealing, thereby ensuring the low leakage grade of the valve; the guide plate 5 is fixed on the outer side of the valve seat, is parallel to the shaft 4 and is positioned on one side where the medium normally flows in, so that the resistance generated by the valve in the normal medium flow direction can be minimized, and the medium flow required by subsequent equipment is met; the shaft 4 is mounted at both ends in roller bearings in a bearing cap 6, which reduces friction generated when the shaft 4 rotates.
Preferably, the limiting mechanism 12 is an L-shaped structure, one end of the limiting mechanism 12 is fixedly connected with the frame of the valve body 1, the other end of the limiting mechanism is located on the path where the blade 2 is opened, and the other end of the limiting mechanism is provided with an adjusting bolt, so that the maximum opening angle of the blade 2 can be limited by rotating the adjusting bolt; the structure is more reasonable in an L-shaped structure, and can bear larger pressure from the blade 2.
Preferably, there are a plurality of disk seats in the valve body 1 for a plurality of axles 4 of installation, can avoid influencing other facilities in pipeline or the wall body because of blade 2 is too big when blade 2 that causes because of the valve body 1 shape irregularity is opened entirely exceeds the valve body.
Preferably, the cross section of the guide plate 5 is in an L shape or an arc shape, and the length of the guide plate 5 is the same as that of the blade 2, so as to change the inflow direction of the medium.
Preferably, an O-ring is disposed between the gap between the bearing cap 6 and the shaft 4 to prevent gas leakage.
The utility model discloses a working process does:
as shown in fig. 2, when a medium flows to the valve, the valve blade 2 is opened under the action of gravity and medium thrust, the larger the thrust is, the larger the opening angle is, when the valve is opened to a certain extent, the valve is acted by the limiting mechanism 12, at this time, the valve is always kept in an open state, and when the valve is opened, the blade 2 drives the shaft 4 to rotate, so that the main swing arm 11 is driven to rotate, the spring 10 is further stretched, and the spring 10 is in a stretched state; as shown in fig. 4, when the tornado comes, the medium flow direction changes, the blade 2 starts to rotate and close under the action of the tornado, and simultaneously, the main radial arm 11 is driven by the tension of the spring 10 to drive the shaft 4 to rotate, so that the rotation of the blade 2 is accelerated until the valve is closed.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. A self-opening anti-tornado valve is characterized by comprising a valve body (1), wherein a blade (2) is rotatably connected with the valve body (1) through a shaft (4); the shaft (4) is fixedly connected with the edge of the blade (2); the shaft (4) is positioned in a valve seat with a dovetail-shaped cross section, and two ends of the valve seat are fixedly connected with the valve body (1); the limiting mechanism (12) is fixed inside the valve body (1) and used for limiting when the blade (2) is opened, so that the opening angle of the blade (2) is not more than 90 degrees; spring pull rod (9) one end is fixed on the frame of valve body (1), and the one end of keeping away from valve body (1) in spring pull rod (9) is fixed to spring (10) one end, and spring (10) deviate from one end and axle (4) of spring pull rod (9) and pass through main spiral arm (11) fixed connection, and spring (10) are in tensile state when blade (2) are opened, and spring (10) resume normally when blade (2) are closed.
2. The self-opening anti-tornado valve as claimed in claim 1, wherein one end of the shaft (4) extending out of the valve body (1) is fixedly connected with a radial arm (7), each radial arm (7) is rotatably connected with a connecting rod (8), so that synchronous linkage of a plurality of blades (2) can be realized, and the integral operation of the valve is ensured; a sealing ring (3) made of rubber is fixed in the dovetail groove of the valve seat; the guide plate (5) is fixed on the outer side of the valve seat, is parallel to the shaft (4), and is positioned on one side where the medium normally flows in; both ends of the shaft (4) are mounted in roller bearings in a bearing cap (6).
3. The self-opening anti-tornado valve according to claim 1, characterized in that the limiting mechanism (12) is an L-shaped structure, one end of the limiting mechanism (12) is fixedly connected with the frame of the valve body (1), the other end is located on the path of the opening of the blade (2), and the other end is provided with an adjusting bolt, which can be rotated to limit the maximum angle of the opening of the blade (2).
4. Self-opening anti-tornado valve according to claim 1, characterised in that inside the valve body (1) there are a plurality of seats for mounting a plurality of shafts (4).
5. The self-opening anti-tornado valve according to claim 1, characterized in that the cross section of the deflector (5) is L-shaped or arc-shaped, and the length of the deflector (5) is the same as the length of the blade (2).
6. Self-opening anti-tornado valve according to claim 1, characterised in that an O-ring is arranged between the gap between the bearing cover (6) and the shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121757679.0U CN214888934U (en) | 2021-07-30 | 2021-07-30 | Self-opening anti-tornado valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121757679.0U CN214888934U (en) | 2021-07-30 | 2021-07-30 | Self-opening anti-tornado valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214888934U true CN214888934U (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121757679.0U Active CN214888934U (en) | 2021-07-30 | 2021-07-30 | Self-opening anti-tornado valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214888934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458774A (en) * | 2022-02-15 | 2022-05-10 | 石家庄阀门一厂股份有限公司 | Isolation air valve |
-
2021
- 2021-07-30 CN CN202121757679.0U patent/CN214888934U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458774A (en) * | 2022-02-15 | 2022-05-10 | 石家庄阀门一厂股份有限公司 | Isolation air valve |
| CN114458774B (en) * | 2022-02-15 | 2023-12-12 | 石家庄先楚核能装备股份有限公司 | Isolation air valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 050222 No.69, Shitong Road, Luquan District, Shijiazhuang City, Hebei Province Patentee after: Shijiazhuang Xianchu Nuclear Equipment Co.,Ltd. Address before: 050222 No.69, Shitong Road, Luquan District, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG NO.1 VALVE FACTORY CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |