CN220957074U - Limiting device for preventing gate valve from falling - Google Patents
Limiting device for preventing gate valve from falling Download PDFInfo
- Publication number
- CN220957074U CN220957074U CN202322529476.1U CN202322529476U CN220957074U CN 220957074 U CN220957074 U CN 220957074U CN 202322529476 U CN202322529476 U CN 202322529476U CN 220957074 U CN220957074 U CN 220957074U
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- shell
- pull ring
- thimble
- hole
- valve body
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- 210000004907 gland Anatomy 0.000 claims abstract description 29
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a limiting device for preventing a gate valve from falling, which is vertically arranged on the gate valve and comprises a shell, a thimble, a spring, a gland and a pull ring; the gate valve is vertically arranged and comprises a valve body and a gate board which is connected in the valve body in a drawing manner; the valve body and the plugboard are respectively provided with a through hole for the thimble to be inserted; one end, close to the pull ring, of the shell is in threaded connection with the gland, and one end, far away from the pull ring, of the shell is welded on the valve body; the thimble is connected inside the shell in a sliding way, one end of the thimble sequentially extends out of the shell and the gland and is in threaded connection with the pull ring, and the other end of the thimble extends out of the shell and is inserted into the through hole on the valve body; a spring is sleeved on the thimble in the shell. The gate valve anti-falling limiting device limits the opening of the vertically installed gate valve, and avoids risk of personnel injury caused by falling of the gate valve.
Description
Technical Field
The utility model relates to the technical field of gate valves of ventilation systems of nuclear power plants, in particular to a falling-preventing limiting device for a gate valve.
Background
The ventilation system of the nuclear power plant has large ventilation quantity, large length of the air pipe and large pipe diameter of the air pipe. The gate valve is applied to medium and large diameter pipelines, is used for cutting off media in the pipelines, has the characteristics of small fluid resistance, labor saving in opening and closing and unrestricted media flowing direction, and is widely applied to ventilation systems of nuclear power plants.
At present, a limiting device is not designed on the gate valve, and when the gate is opened to the lowest point, the gate valve is fixed and prevented from falling only by virtue of the friction force between 5 bolts at the lowest end of the valve body and the gate. There is no obvious risk when the push-pull valve is installed horizontally, but if the push-pull valve is installed vertically, when the opening of the push-pull valve is large and the push-pull plate descends to a certain height, the risk of falling and injuring personnel exists.
Disclosure of utility model
Based on this, it is necessary to have the picture peg to fall when opening to current perpendicular installation push-pull valve and smash the problem of injury personnel risk, provides a push-pull valve stop device that falls, carries out spacingly to the aperture of perpendicular installation push-pull valve, avoids the picture peg to fall and smashes personnel risk.
In order to achieve the above object, the present utility model provides the following technical solutions:
The anti-falling limiting device of the gate valve is vertically arranged on the gate valve and comprises a shell, a thimble, a spring, a gland and a pull ring; the gate valve is vertically arranged and comprises a valve body and a gate board which is connected in the valve body in a drawing manner; the valve body and the plugboard are respectively provided with a through hole for the thimble to be inserted; one end, close to the pull ring, of the shell is in threaded connection with the gland, and one end, far away from the pull ring, of the shell is welded on the valve body; the thimble is connected inside the shell in a sliding way, one end of the thimble sequentially extends out of the shell and the gland and is in threaded connection with the pull ring, and the other end of the thimble extends out of the shell and is inserted into the through hole on the valve body; a spring is sleeved on the thimble in the shell.
Working principle: when the gate valve is opened, the gate plate descends in the valve body until the through hole on the gate plate is aligned with the center of the through hole on the valve body, and the thimble ejects into the through hole on the gate plate under the action of a spring force, so that the gate plate is prevented from suddenly falling and injuring personnel in the operation process; when the gate valve is closed, the thimble is propped against the gate under the action of the spring force, and the gate valve anti-falling limiting device does not exert the gate valve anti-falling limiting function.
Further, a through hole is formed in the bottom of the lower part of the valve body, and a through hole is formed in the top of the upper part of the plugboard; when the gate valve is opened, the gate plate descends in the valve body until the through hole on the gate plate is aligned with the center of the through hole on the valve body, and the maximum opening of the gate valve is achieved.
In one embodiment, the through hole in the valve body is in accordance with the through hole diameter of the plugboard.
Further, the shell is provided with a first external thread close to one end of the pull ring, the gland is provided with a first internal thread, the first external thread is matched with the first internal thread, and one end of the shell close to the pull ring is connected with the gland through the first external thread and the first internal thread.
Further, the thimble is close to pull ring one end and is equipped with the second internal thread, the pull ring is equipped with the second external screw thread, second external screw thread and second internal screw thread assorted, thimble is close to pull ring one end and passes through second external screw thread and second internal screw thread connection with the pull ring.
Further, through holes are formed in the two ends of the shell and corresponding positions of the shell on the gland, and one end, far away from the pull ring, of the thimble sequentially penetrates through the through hole in the gland, the through hole in the end, close to the pull ring, of the shell, and the inside of the shell and the through hole in the valve body are inserted after the shell is far away from the through hole in the end of the pull ring; the through hole on the pressing cover, the through hole on the end of the shell close to the pull ring, the through hole on the end of the shell away from the pull ring and the inside of the shell form a channel for the thimble to slide together; through holes in the pressing cover, through holes in the shell close to one end of the pull ring and through holes in the shell far away from one end of the pull ring are larger than the size of the ejector pin and smaller than the diameter of the spring, and the spring and the ejector pin are pressed inside the shell.
The beneficial technical effects of the utility model are as follows:
The anti-falling limiting device of the gate valve is simple in structure, convenient to operate and convenient to produce and process; when the vertically installed gate valve is opened, the gate plate is lowered in the valve body until the through hole on the gate plate is aligned with the center of the through hole on the valve body, the ejector pin automatically pops up and is inserted into the through hole on the gate plate, so that the gate plate cannot continuously fall, the opening of the vertically installed gate valve is limited, and the risk of injury to personnel due to falling of the gate plate is avoided.
Drawings
FIG. 1 is a schematic diagram of a gate valve anti-falling limiting device according to the present utility model;
FIG. 2 is a cross-sectional view taken along the plane of FIG. 1 A-A;
FIG. 3 is a front view of a slide valve fall arrest stop arrangement of the present utility model;
FIG. 4 is a schematic side view of the anti-fall limiting device of the gate valve of the present utility model.
In the figure, 1, a shell; 2. a thimble; 3. a spring; 4. a gland; 5. a pull ring; 6. a valve body; 7. and (5) inserting plates.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent, and fully understood, by reference to the accompanying drawings and detailed description, in which embodiments of the utility model are shown, some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1-4, the embodiment provides a falling-preventing limiting device of a gate valve, which is vertically arranged on the gate valve and comprises a shell 1, a thimble 2, a spring 3, a gland 4 and a pull ring 5; the gate valve is vertically arranged in a pipeline of a ventilation system of the nuclear power plant and comprises a valve body 6 and a gate 7 which is connected in the valve body 6 in a drawing manner; the valve body 6 and the plugboard 7 are respectively provided with a through hole for the thimble 2 to be inserted; one end of the shell 1, which is close to the pull ring 5, is in threaded connection with the gland 4, and one end of the shell 1, which is far away from the pull ring 5, is welded on the valve body 6; the thimble 2 is in sliding connection with the inside of the shell 1, one end of the thimble sequentially extends out of the shell 1 and the gland 4 and is in threaded connection with the pull ring 5, and the other end of the thimble extends out of the shell 1 and is inserted into a through hole on the valve body 6; a spring 3 is sleeved on the thimble 2 in the shell 1.
In this embodiment, a through hole is formed in the bottom of the lower portion of the valve body 6, and a through hole is formed in the top of the upper portion of the insert plate 7; when the gate valve is opened, the gate 7 is lowered in the valve body 6 until the through hole in the gate 7 is aligned with the center of the through hole in the valve body 6, which is the maximum opening of the gate valve.
In this embodiment, the through hole in the valve body 6 is identical to the through hole of the insert plate 7.
In this embodiment, the casing 1 is equipped with first external screw thread near pull ring 5 one end, gland 4 is equipped with first internal screw thread, first external screw thread and first internal screw thread assorted, casing 1 is close to pull ring 5 one end and gland 4 through first external screw thread and first internal screw thread connection.
In this embodiment, the thimble 2 is equipped with the second internal thread near pull ring 5 one end, pull ring 5 is equipped with the second external screw thread, second external screw thread and second internal screw thread assorted, thimble 2 is close to pull ring 5 one end and pull ring 5 through second external screw thread and second internal screw thread connection.
In this embodiment, through holes are formed at two ends of the housing 1 and corresponding positions of the housing 1 on the gland 4, and one end of the thimble 2 away from the pull ring 5 sequentially passes through the through hole on the gland 4, the through hole on one end of the housing 1 close to the pull ring 5, the inside of the housing 1, and the through hole on one end of the housing 1 away from the pull ring 5 and then is inserted into the through hole on the valve body 6; the through hole on the gland 4, the through hole on one end of the shell 1 close to the pull ring 5, the through hole on one end of the shell 1 far away from the pull ring 5 and the inside of the shell 1 form a channel for the thimble 2 to slide together; through holes on the gland 4, through holes on one end of the shell 1 close to the pull ring 5 and through holes on one end of the shell 1 far away from the pull ring 5 are larger than the size of the thimble 2 and smaller than the diameter of the spring 3, and the spring 3 and the thimble 2 are compressed inside the shell 1.
The vertical installation operation of the gate valve is carried out by using the anti-falling limiting device of the gate valve, and the anti-falling limiting device comprises the following steps:
When the gate valve is closed, the thimble 2 props against the gate 7 under the action of spring force, and the gate valve anti-falling limiting device does not exert the gate valve anti-falling limiting function;
When the gate valve is opened, the gate plate 7 descends in the valve body 6 until the through hole on the gate plate 7 is aligned with the center of the through hole on the valve body 6, the thimble 2 pops up and inserts into the through hole on the gate plate 7 under the action of spring force, and the gate plate 7 is prevented from suddenly falling and injuring personnel during operation;
When the work is completed and the gate valve needs to be closed, the pull ring 5 is manually pulled to pull the thimble 2 out of the through hole on the gate 7, and at the moment, the gate 7 is not blocked by an object and can be closed.
The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (6)
1. The anti-falling limiting device of the gate valve is characterized by being vertically arranged on the gate valve and comprising a shell (1), a thimble (2), a spring (3), a gland (4) and a pull ring (5); the gate valve is vertically arranged and comprises a valve body (6) and a gate plate (7) which is connected in the valve body (6) in a pulling manner; through holes for inserting the thimble (2) are formed in the valve body (6) and the plugboard (7); one end of the shell (1) close to the pull ring (5) is in threaded connection with the gland (4), and one end of the shell (1) far away from the pull ring (5) is welded on the valve body (6); the thimble (2) is slidably connected inside the shell (1), one end of the thimble sequentially extends out of the shell (1) and the gland (4) and is in threaded connection with the pull ring (5), and the other end of the thimble extends out of the shell (1) and is inserted into a through hole on the valve body (6); a spring (3) is sleeved on a thimble (2) in the shell (1).
2. The plate inserting valve anti-falling limiting device according to claim 1, wherein a through hole is formed in the bottom of the lower portion of the valve body (6), and a through hole is formed in the top of the upper portion of the plate inserting plate (7); when the gate valve is opened, the gate (7) descends in the valve body (6) until the through hole on the gate (7) is aligned with the center of the through hole on the valve body (6), and the maximum opening of the gate valve is achieved.
3. The gate valve anti-falling limiting device according to claim 2, wherein the through hole in the valve body (6) is consistent with the through hole of the gate (7).
4. The plate valve anti-falling limiting device according to claim 2, wherein a first external thread is arranged at one end, close to the pull ring (5), of the shell (1), a first internal thread is arranged on the gland (4), the first external thread is matched with the first internal thread, and one end, close to the pull ring (5), of the shell (1) is connected with the gland (4) through the first external thread and the first internal thread.
5. The plate valve anti-falling limiting device according to claim 2, wherein a second internal thread is arranged at one end, close to the pull ring (5), of the thimble (2), a second external thread is arranged at the pull ring (5), the second external thread is matched with the second internal thread, and one end, close to the pull ring (5), of the thimble (2) is connected with the pull ring (5) through the second external thread and the second internal thread.
6. The anti-falling limiting device of the gate valve according to claim 2, wherein through holes are formed in two ends of the shell (1) and corresponding positions of the shell (1) on the gland (4), one end, far away from the pull ring (5), of the thimble (2) sequentially penetrates through the through hole on the gland (4), the through hole, close to one end, of the pull ring (5, of the shell (1), the inside of the shell (1) and the through hole, far away from one end of the pull ring (5), of the shell (1), and then the thimble (2) is inserted into the through hole on the valve body (6); the through hole on the gland (4), the through hole on one end of the shell (1) close to the pull ring (5), the inside of the shell (1) and the through hole on one end of the shell (1) far away from the pull ring (5) jointly form a channel for the thimble (2) to slide; through holes on the gland (4), through holes on one end of the shell (1) close to the pull ring (5) and through holes on one end of the shell (1) far away from the pull ring (5) are larger than the thimble (2) in size and smaller than the diameter of the spring (3), and the spring (3) and the thimble (2) are compressed inside the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322529476.1U CN220957074U (en) | 2023-09-18 | 2023-09-18 | Limiting device for preventing gate valve from falling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322529476.1U CN220957074U (en) | 2023-09-18 | 2023-09-18 | Limiting device for preventing gate valve from falling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220957074U true CN220957074U (en) | 2024-05-14 |
Family
ID=90979916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322529476.1U Active CN220957074U (en) | 2023-09-18 | 2023-09-18 | Limiting device for preventing gate valve from falling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220957074U (en) |
-
2023
- 2023-09-18 CN CN202322529476.1U patent/CN220957074U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |