CN216813096U - Valve convenient to keep apart and lock - Google Patents
Valve convenient to keep apart and lock Download PDFInfo
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- CN216813096U CN216813096U CN202122875168.5U CN202122875168U CN216813096U CN 216813096 U CN216813096 U CN 216813096U CN 202122875168 U CN202122875168 U CN 202122875168U CN 216813096 U CN216813096 U CN 216813096U
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- valve
- isolation
- lock
- hand wheel
- hole
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Abstract
The utility model belongs to the technical field of nuclear power machinery, and particularly relates to a valve convenient to isolate and lock. Two valve body fixing holes are additionally formed in the fixed valve body on the outer side of the valve rod of the valve and are respectively connected with a fixing chain, a hand wheel locking hole is additionally formed in the outer edge of the valve hand wheel, and the size of the hand wheel locking hole can pass through the general isolation lock; the length of the fixed chain is not less than 1.5 times of the distance between the valve body fixing hole and the farthest hand wheel lock hole, and the size of each chain hole can pass through the isolation lock; when the valve is not locked, the fixed chain can be wound on the valve body, and the action of the valve is not influenced. The technical scheme of the utility model has the advantages of simple valve isolation and locking operation and convenient use. The configuration of the field isolation chain is reduced, and the use cost of the daily isolation chain is reduced.
Description
Technical Field
The utility model belongs to the technical field of nuclear power machinery, and particularly relates to a valve convenient to isolate and lock.
Background
Valves of a nuclear power plant are very important auxiliary equipment during operation, and are related to the importance of safe operation, some valves are normally opened, some valves are normally closed, and the accidental opening and closing of the valves can cause high-pressure and high-temperature or accidental release of high-radioactivity media, so that personnel, equipment or environmental safety risks are caused. Therefore, the safety of the important valve is considered, the valve is locked at a required position, and misoperation of the valve by operators and non-operators is avoided.
The unable manually operation of hand wheel is made through the chain with valve hand wheel and pipeline or other annex fixed equipment winding to current valve isolation, and the rethread is special to be kept apart the lock and is prevented becoming flexible or personnel's relieving with the chain pinning. The isolation chain generally has a length of about one meter, and is heavy to carry during isolation operation every day, which brings inconvenience to daily operation.
In view of the above-mentioned shortcomings in the prior art, there is a need for an improved valve that facilitates isolation locking.
Disclosure of Invention
The utility model aims to design a valve convenient to be locked in an isolation mode, and reduce the isolation operation burden of the valve.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a valve convenient for isolation locking comprises a valve hand wheel, a hand wheel locking hole and a valve rod.
The valve hand wheel is of a circular structure and is arranged on the upper portion of the valve rod. The valve hand wheel is evenly provided with 4 hand wheel lockholes along the circumference. The diameter of the hand wheel lockhole is 5 mm.
The valve convenient for isolation and locking is also provided with a valve body fixing hole and a fixing chain on the valve rod.
Two valve body fixing holes are oppositely formed in the outer side wall of the valve rod along the circumference, and the diameter of each valve body fixing hole is 5 mm.
Each fixing chain passes through the corresponding valve body fixing hole and then is fixedly connected with the valve rod.
Two fixed chains pass through the same hand wheel lock hole.
The length of the fixed chain is not less than 1.5 times of the distance between the valve body fixed hole and the hand wheel lock hole farthest away.
The valve convenient for isolation and locking further comprises an isolation lock and an isolation board, wherein the isolation lock sequentially penetrates through the isolation board, the hand wheel lock hole and the hole for fixing the chain, so that the fixing chain is fixed.
The using method of the utility model is as follows:
1) determining a valve isolation operation task, and carrying an isolation lock and an isolation board;
2) manually operating to place the valve at an isolation required position, and fully opening or fully closing or fixing the opening degree;
3) two fixed chains 5 carried by the valve body are wound around the same hand wheel lock hole and are tightened to form a fixed triangle, so that the valve hand wheel is fixed and cannot be switched;
4) the isolating lock penetrates through the isolating plate, the hand wheel lock hole and the fixed chain hole to enable the fixed chain 5 to be kept wound tightly and not to be loosened, and valve isolating operation is completed;
5) when the isolation is released, the isolation lock is unlocked, the isolation lock and the isolation plate are taken down, the fixing chain is loosened, the normal opening and closing operation of the valve is confirmed, and the valve isolation releasing operation is completed.
The beneficial effects obtained by the utility model are as follows:
1. the valve isolation locking operation is simple, the use is convenient, and when the valve isolation locking is required, a heavy chain is not required to be carried, and only the isolation plate lock is carried;
2. during isolation, the two fixed chains are wound around the hand wheel lock hole at the same position and are tightened to form a fixed triangle, so that the valve hand wheel is fixed and cannot be switched, and then the isolation lock penetrates through the hand wheel lock hole and the fixed chain hole to keep the fixed chain wound tightly and cannot be loosened, so that the aim of incapability of manually switching the valve without releasing the isolation lock is fulfilled;
3. after the valve is additionally provided with the fixed chains, the configuration of the on-site isolation chains can be reduced, and the use cost of the daily isolation chains is reduced.
Drawings
FIG. 1 is a schematic view of a valve hand wheel structure;
fig. 2 is a schematic view of a valve structure for facilitating isolation locking.
In the figure:
1 is a valve hand wheel; 2, a hand wheel lock hole; 3 is a valve rod; 4 is a valve body fixing hole; and 5, a fixed chain.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments.
The technical scheme of the utility model is that a valve with a hand wheel commonly used in the current nuclear power plant is reformed, two valve body fixing holes are added on a fixed valve body outside a valve rod of the valve and are respectively connected with a fixed chain, a hand wheel locking hole is added on the outer edge of a hand wheel of the valve, and the size of the hand wheel locking hole 2 can pass through a general isolation lock; the length of the fixed chain is not less than 1.5 times of the distance between the valve body fixing hole and the farthest hand wheel lock hole, and the size of each chain hole can pass through the isolation lock; when the valve is not locked, the fixed chain can be wound on the valve body, and the action of the valve is not influenced.
As shown in fig. 1-2, a valve convenient for isolation and locking comprises a valve hand wheel 1, a hand wheel lock hole 2, a valve rod 3, a valve body fixing hole 4, a fixing chain 5 and an isolation lock.
The valve hand wheel 1 is of a circular structure and is arranged on the upper portion of the valve rod 3. The valve hand wheel 1 is evenly provided with 4 hand wheel lock holes 2 along the circumference. The diameter of the hand wheel lock hole 2 is 5 mm.
The valve convenient for isolation and locking is also provided with a valve body fixing hole 4 and a fixing chain 5 on the valve rod 3.
Two valve body fixing holes 4 are oppositely arranged on the outer side wall of the valve rod 3 along the circumference, and the diameter of each valve body fixing hole 4 is 5 mm.
Each fixing chain 5 passes through the corresponding valve body fixing hole 4 and then is fixedly connected with the valve rod 3.
Two fixed chains 5 pass through the hand wheel lock hole 2 at the same position.
The length of the fixed chain 5 is not less than 1.5 times of the distance between the valve body fixing hole 4 and the hand wheel lock hole 2 farthest away.
The valve convenient for isolation and locking further comprises an isolation lock and an isolation board, wherein the isolation lock sequentially penetrates through the isolation board, the hand wheel lock hole 2 and the hole of the fixed chain 5, and therefore the fixed chain 5 is fixed.
The using method of the utility model is as follows:
1) determining a valve isolation operation task, and carrying an isolation lock and an isolation board;
2) manually operating to place the valve at an isolation required position, and fully opening or fully closing or fixing the opening degree;
3) two fixed chains 5 carried by the valve body are wound around the hand wheel lock hole 2 at the same position and are tightened to form a fixed triangle, so that the valve hand wheel is fixed and cannot be switched;
4) an isolation lock penetrates through the isolation board, the hand wheel lock hole 2 and the fixed chain hole to enable the fixed chain 5 to be kept wound tightly and not to be loosened, and valve isolation operation is completed;
5) when the isolation is released, the isolation lock is unlocked, the isolation lock and the isolation board are taken down, the fixing chain 5 is loosened, the normal opening and closing operation of the valve is confirmed, and the isolation releasing operation of the valve is completed.
The beneficial effects obtained by the utility model are as follows:
1. the valve isolation locking device is simple in operation and convenient to use, and when the valve isolation locking is needed, a heavy chain is not needed, and only the isolation plate lock is needed;
2. during isolation, the two fixed chains are wound around the hand wheel lock hole at the same position and are tightened to form a fixed triangle, so that the valve hand wheel is fixed and cannot be switched, and then the isolation lock penetrates through the hand wheel lock hole and the fixed chain hole to keep the fixed chain wound tightly and cannot be loosened, so that the aim of incapability of manually switching the valve without releasing the isolation lock is fulfilled;
3. after the valve is additionally provided with the fixed chains, the configuration of the on-site isolation chains can be reduced, and the use cost of the daily isolation chains is reduced.
Claims (8)
1. The utility model provides a valve convenient to keep apart and lock which characterized in that: comprises a valve hand wheel (1), a hand wheel lock hole (2) and a valve rod (3); the valve hand wheel (1) is of a circular structure and is arranged at the upper part of the valve rod (3); the valve hand wheel (1) is evenly provided with 4 hand wheel lock holes (2) along the circumference.
2. A valve to facilitate isolation of a lock as defined in claim 1, wherein: the valve convenient for isolation and locking is also provided with a valve body fixing hole (4) and a fixing chain (5) on the valve rod (3).
3. A valve to facilitate isolation locking as defined in claim 2, wherein: two valve body fixing holes (4) are oppositely formed in the outer side wall of the valve rod (3) along the circumference, and the diameter of each valve body fixing hole (4) is 5 mm.
4. A valve to facilitate isolation of a lock as defined in claim 3, wherein: each fixing chain (5) penetrates through the corresponding valve body fixing hole (4) and then is fixedly connected with the valve rod (3).
5. The valve of claim 4, wherein the valve further comprises: the two fixed chains (5) pass through the hand wheel lock hole (2) at the same position.
6. A valve to facilitate isolation of a lock as defined in claim 5, wherein: the length of the fixed chain (5) is not less than 1.5 times of the distance between the valve body fixing hole (4) and the hand wheel lock hole (2) which is farthest away.
7. A valve to facilitate isolation of a lock as defined in claim 5, wherein: the valve convenient for isolation and locking further comprises an isolation lock and an isolation board, wherein the isolation lock sequentially penetrates through the isolation board, the hand wheel lock hole (2) and the hole of the fixed chain (5), so that the fixed chain (5) is fixed.
8. A valve to facilitate isolation of a lock as defined in claim 5, wherein: the diameter of the hand wheel lock hole (2) is 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122875168.5U CN216813096U (en) | 2021-11-22 | 2021-11-22 | Valve convenient to keep apart and lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122875168.5U CN216813096U (en) | 2021-11-22 | 2021-11-22 | Valve convenient to keep apart and lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216813096U true CN216813096U (en) | 2022-06-24 |
Family
ID=82049954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122875168.5U Active CN216813096U (en) | 2021-11-22 | 2021-11-22 | Valve convenient to keep apart and lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216813096U (en) |
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2021
- 2021-11-22 CN CN202122875168.5U patent/CN216813096U/en active Active
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