CN220891106U - Pressure relief device for valve with pressure - Google Patents
Pressure relief device for valve with pressure Download PDFInfo
- Publication number
- CN220891106U CN220891106U CN202322830940.0U CN202322830940U CN220891106U CN 220891106 U CN220891106 U CN 220891106U CN 202322830940 U CN202322830940 U CN 202322830940U CN 220891106 U CN220891106 U CN 220891106U
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- China
- Prior art keywords
- pressure
- ring
- valve
- rod
- ejector rod
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- 238000007789 sealing Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims description 37
- 238000007906 compression Methods 0.000 claims description 37
- 238000009434 installation Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 239000004519 grease Substances 0.000 abstract description 25
- 238000002347 injection Methods 0.000 abstract description 21
- 239000007924 injection Substances 0.000 abstract description 21
- 239000007789 gas Substances 0.000 description 16
- 239000000243 solution Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses a pressure relief device of a valve with pressure, which is provided with a grease injection valve, and comprises a body fixedly connected to the grease injection valve, a pressure relief hole arranged on the body and a push rod vertically and fixedly arranged in the body, wherein the push rod corresponds to steel balls in the grease injection valve, a pressure cap, a sealing gasket and a pressure ring are sleeved outside the push rod, the pressure cap, the sealing gasket and the pressure ring are sequentially arranged from top to bottom, the pressure cap is fixedly arranged on the body, the pressure relief hole is arranged between the pressure ring and the grease injection valve, a pressure rod is vertically and fixedly arranged in the push rod, the lower part of the pressure rod longitudinally protrudes out of the push rod, the top end of the pressure rod transversely protrudes out of the push rod, and the pressure rod is used for pushing the pressure ring to tightly press and attach the sealing gasket on the pressure cap and the push rod.
Description
Technical Field
The utility model relates to the technical field of oilfield wellhead valves, in particular to a pressure relief device of a pressurized valve.
Background
The grease filling valve is one device for filling lubricating grease into large machine, petrochemical equipment, ball valve, plate valve, well head, etc. and is used widely in oil field gas well valve. The grease injection valve comprises a valve main body and a valve internal part, wherein the valve main body is a component with external threads at two ends and a hexagonal head in the middle part, the valve internal part is composed of a steel ball and a spring, the spring props against the steel ball to fix the position of the steel ball when the grease injection valve is in operation, the steel ball plays a first sealing role when not injecting grease, so that grease or gas in equipment cannot leak out, and when the grease injection valve is used in an oilfield gas well valve, the steel ball is pushed inwards, and the gas in the equipment can be discharged.
The gas well mouth valve of the oil field gas well should be maintained at least once a half year, and the gas well mouth valve of the oil field gas well with the hydrogen sulfide content more than 3000mg/m 3 or the water yield more than 5m 3/d should be maintained once a quarter. When the valve is closed during maintenance, the maintenance operation is started after the gas in the valve is required to be discharged, otherwise, the condition that personnel are injured due to high-speed ejection of high-pressure gas is likely to occur.
The utility model with the publication number of CN 216478964U discloses a controllable pressure relief device of a grease injection valve, which comprises a body, a push rod, a rotating mechanism and a pressure relief screw; the ejector rod is in threaded connection with a through hole formed in the body, and the rotating mechanism is arranged at the top end of the ejector rod; the top end of the through hole is in sealing connection with the ejector rod, the sealing connection is realized through a pressure cap, a pressure ring and a sealing ring which are sequentially sleeved on the ejector rod from top to bottom, the bottom end of the through hole is provided with a grease injection valve threaded interface, and a pressure release cavity is formed between the through hole above the grease injection valve threaded interface and the ejector rod; the body is provided with a first pressure relief opening and a second pressure relief opening, a pressure relief screw is arranged at the second pressure relief opening, the second pressure relief opening is communicated with the pressure relief cavity, and the first pressure relief opening is communicated with the second pressure relief opening. In the use, the staff discovers that in the in-process that the device was carried, often put together with other equipment, and permanent friction jolts can lead to pressing cap part to twist, and sealing material does not receive the extrusion, and sealed effect weakens, and when the staff did not discover just using, gas was possible to reveal in the space between sealing washer and the ejector pin, if contain harmful gas such as hydrogen sulfide in the gas, will cause the influence to the staff.
Disclosure of utility model
In view of the above, the present utility model aims to overcome the shortcomings of the prior art, and to provide a pressure relief device for a valve with pressure, in which a gasket is pressed against a pressure cap and a plunger rod when in use, and gas leakage can be prevented even if the pressure cap is not screwed.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
The utility model provides a take pressure valve pressure release device, is equipped with on the area pressure valve and annotates the fat valve, including the rigid coupling body on annotating the fat valve, locate the pressure release hole on the body and the ejector pin of upper and lower direction installation in this body, the ejector pin is corresponding with the steel ball in annotating the fat valve, the ejector pin cup joints outward and presses cap, sealed pad and clamping ring, press cap, sealed pad and clamping ring down arrange in proper order from last, press cap sets firmly on the body, the pressure release hole is located between clamping ring and the fat valve, the upper and lower direction installation depression bar in the ejector pin, the vertical protrusion ejector pin in depression bar lower part, the horizontal protrusion ejector pin in depression bar top, the depression bar is used for promoting the clamping ring to compress tightly sealed pad laminating on pressure cap and ejector pin.
Further, a compression spring is arranged between the top end of the compression rod and the compression ring, the compression spring is sleeved on the ejector rod, and when the compression degree of the compression spring is maximum, the lower part of the compression rod is positioned in the ejector rod.
Further, the top end of the compression rod is fixedly connected with a circular ring, the circular ring is sleeved on the ejector rod, and the bottom end of the compression spring is pressed against or fixedly arranged on the circular ring.
Further, the top of the pressure ring is provided with a convex ring with the outer diameter larger than that of the pressure ring, and the convex ring is sleeved on the ejector rod.
Further, a sealing ring and a baffle ring are arranged below the compression ring, the sealing ring and the baffle ring are sleeved on the ejector rod, and the top end of the compression spring is pressed or fixedly arranged on the baffle ring.
Further, the top end of the ejector rod is fixedly connected with a handle, the handle is perpendicular to the ejector rod, and a sleeve is sleeved outside the handle.
Further, a vertical plate is arranged in the sleeve, a first long hole for the vertical plate to slide along the length direction of the handle is formed in the handle, and a magnetic attraction assembly matched with each other is arranged on the side face, facing the ejector rod, of the vertical plate and the corresponding side wall of the first long hole.
The beneficial effects of the utility model are as follows:
1. When the ejector rod is rotated downwards, the compression rod firstly contacts with the steel ball of the grease injection valve, the compression rod moves upwards to tightly press the sealing gasket on the pressing cap and the ejector rod, and even if the pressing cap is not screwed tightly, the sealing gasket can be tightly pressed on the pressing cap and the ejector rod by the compression ring to finish sealing;
2. A compression spring is arranged between the compression rod and the compression ring to prevent the sealing gasket from being invalid due to overlarge stress;
3. The utility model is arranged on the grease injection valve with the pressure valve, when the handle is difficult to screw, the sleeve can be pulled out, the arm of force is increased when the sleeve rotates, and the rotation is convenient;
4. The magnetic attraction assembly is arranged between the vertical rod and the sliding hole, the sleeve which cannot be pulled out can be fixed on the handle when the working space is narrow, the sleeve can be prevented from being pulled out in the storage and moving process, and the practicability is higher.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
FIG. 2 is a schematic view of the split structure of FIG. 1;
FIG. 3 is a schematic view of the mounting structure of the compression bar, the ejector pin and the connection assembly thereof;
FIG. 4 is a schematic diagram of a second embodiment of the present utility model;
FIG. 5 is a schematic view of the split structure of FIG. 4;
Wherein: 1. the device comprises a body, 2, a pressure relief hole, 3, a top rod, 4, a handle, 5, a pressure cap, 6, a sealing gasket, 7, a compression ring, 8, a compression rod, 9, a vertical rod, 10, a cross rod, 11, a first long hole, 12, a convex ring, 13, a compression spring, 14, a circular ring, 15, a sealing ring, 16, a baffle ring, 17, a sleeve, 18, a vertical plate, 19, a magnetic attraction component and a second 20-long hole.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only 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.
Example 1
The first embodiment of the utility model is shown in figures 1-3, a pressure relief device of a valve with pressure is provided with a grease injection valve, and as shown in figures 1 and 2, the pressure relief device comprises a body 1 fixedly connected to the grease injection valve, a pressure relief hole 2 arranged on the body 1 and a push rod 3 arranged in the body 1 in an up-down guiding way, wherein a handle 4 is fixedly arranged at the top end of the push rod 3, an internal thread I matched with an external thread I of the grease injection valve is arranged at the lower end of the inner part of the body 1, the push rod 3 is inserted into the body 1, an external thread II is arranged in the middle part of the push rod 3, an internal thread II matched with the external thread II is arranged in the body 1, the push rod 3 is screwed, and the push rod 3 can move up and down; the ejector rod 3 is sleeved with the pressing cap 5, the sealing gasket 6 and the pressing ring 7 in sequence, the pressing cap 5 is in threaded connection with the body 1, the sealing gasket 6 is positioned between the inner top surface of the pressing cap 5 and the top surface of the body 1, the pressure release hole 2 is positioned between the pressing ring 7 and the grease injection valve, the ejector rod 3 corresponds to steel balls in the grease injection valve, the ejector rod 3 moves downwards, the steel balls can be pushed downwards, and gas in the valve with pressure can be discharged from the pressure release hole 2.
The push rod 8 is installed in the push rod 3 in a vertical guiding way, the push rod 8 consists of a vertical rod 9 inserted in the push rod 3 and a transverse rod 10 fixedly arranged on two sides of the top end of the push rod 8 and protruding out of the push rod 3, the arrangement mode of the push rod 8 in the push rod 3 is shown in fig. 3, the lower end of the vertical rod 9 longitudinally protrudes out of the push rod 3, the end part of the transverse rod 10 transversely protrudes out of the push rod 3, and a first long hole 11 for the transverse rod 10 to move up and down is formed in the push rod 3. Under the condition that the press cap 5 is not screwed, and the sealing gasket 6 is not tightly attached between the press cap 5 and the press ring 7, the ejector rod 3 is screwed down, after the bottom end of the press rod 8 contacts with the steel ball of the grease injection valve, the press rod 8 moves upwards under the blocking of the steel ball, and the press ring 7 is pushed to move upwards until the sealing gasket 6 contacts with the upper surface of the press ring 7 and the inner top surface of the press cap 5; the ejector rod 3 continues to move downwards, the steel ball in the grease injection valve is pushed by the pressure rod 8 to move downwards, upward thrust is generated when the spring connected with the steel ball is compressed downwards, the sealing gasket 6 is tightly attached to the pressure cap 5 and the ejector rod 3 by the pressure ring 7, and leakage of gas from the joint of the ejector rod 3 and the pressure cap 5 is prevented.
In order to increase the durability of the sealing gasket 6, the outer diameter of the top of the pressing ring is fixedly connected with a convex ring which is larger than the outer diameter of the pressing ring, the convex ring is sleeved on the ejector rod 3, the top surface of the convex ring 12 is attached to the sealing gasket 6, the convex ring 12 can increase the contact area between the pressing ring 7 and the sealing gasket 6, and the sealing gasket 6 is prevented from being invalid due to overlarge local stress.
When the pressing cap 5 is screwed down, the sealing gasket 6 is tightly pressed on the pressing cap 5, and at the moment, if the steel ball of the grease injection valve is difficult to push downwards, when the ejector rod 3 is screwed down again, the excessive pressure exerted on the sealing gasket 6 by the pressure rod 8 can lead to the failure of the sealing gasket 6, and in order to prevent the situation, the compression spring 13 is arranged between the top end of the pressure rod 8 and the pressing ring 7, and the compression spring 13 is sleeved on the ejector rod 3. When the compression rod 8 moves up to the vertical rod 9 and completely enters the ejector rod 3, the compression degree of the compression spring 13 reaches the maximum, even if the steel ball in the grease injection valve still does not move down, the compression spring 13 can not be compressed any more, the pressure applied to the sealing gasket 6 can not be increased any more, and the sealing gasket 6 is protected.
The top of the compression bar 8 is fixedly provided with a circular ring 14, the circular ring 14 is sleeved on the ejector rod 3, and the bottom end of the compression spring 13 is pressed or fixedly arranged on the circular ring 14; in order to ensure better sealing effect, three sealing rings 15 and a baffle ring 16 are sequentially arranged below the compression ring 7, the sealing rings 15 and the baffle ring 16 are sleeved on the ejector rod 3, and the top end of the compression spring 13 is pressed or fixedly arranged on the baffle ring 16.
Example two
As shown in fig. 4 and fig. 5, a second embodiment of the present utility model is different from the first embodiment in that the sleeve 17 is sleeved outside the handle 4, a riser 18 is disposed in the sleeve 17, a second long hole 20 for sliding the riser 18 along the length direction of the handle 4 is disposed on the handle 4, a magnetic attraction assembly 19 is disposed on the side surface of the riser 18 facing the ejector rod 3 and the side wall of the corresponding second long hole 20, when the handle 4 is difficult to twist, the sleeve 17 can be pulled out, the arm of force during rotation is increased, and the rotation is convenient; the sleeve 17 which cannot be pulled out can be fixed on the handle 4 when the working space is narrow, and the sleeve 17 can be prevented from being pulled out during storage and moving.
Finally, it is noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model, and that other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (7)
1. The utility model provides a take pressure valve pressure release device, its characterized in that, including be used for rigid coupling body (1) on annotating the fat valve, locate pressure release hole (2) on body (1) and upper and lower direction install ejector pin (3) in body (1), ejector pin (3) are corresponding with the steel ball in annotating the fat valve, ejector pin (3) cup joint outside and press cap (5), sealed pad (6) and clamping ring (7), press cap (5), sealed pad (6) and clamping ring (7) from last down arranging in proper order, press cap (5) set firmly on body (1), pressure release hole (2) are located between clamping ring (7) and the annotating the fat valve, guide installation depression bar (8) from top to bottom in ejector pin (3), depression bar (8) lower part longitudinal bulge ejector pin (3), depression bar (8) top lateral bulge ejector pin (3), depression bar (8) are used for promoting clamping ring (7) and compress tightly sealed pad (6) on pressing cap (5) and ejector pin (3) laminating.
2. The pressure relief device for the valve with pressure according to claim 1, wherein a compression spring (13) is arranged between the top end of the pressure rod (8) and the pressure ring (7), the compression spring (13) is sleeved on the ejector rod (3), and when the compression degree of the compression spring (13) is maximum, the lower part of the pressure rod (8) is positioned in the ejector rod (3).
3. The pressure relief device of the valve with pressure according to claim 2, wherein the top end of the pressure rod (8) is fixedly connected with a circular ring (14), the circular ring (14) is sleeved on the ejector rod (3), and the bottom end of the compression spring (13) is pressed or fixedly arranged on the circular ring (14).
4. A valve pressure relief device with pressure according to claim 3, characterized in that the top of the pressure ring (7) is provided with a convex ring (12) with an outer diameter larger than that of the pressure ring (7), and the convex ring (12) is sleeved on the ejector rod (3).
5. The pressure relief device for the valve with pressure according to claim 4, wherein a sealing ring (15) and a baffle ring (16) are arranged below the pressure ring (7), the sealing ring (15) and the baffle ring (16) are sleeved on the ejector rod (3), and the top end of the compression spring (13) is pressed or fixedly arranged on the baffle ring (16).
6. The pressure relief device for a valve under pressure according to any one of claims 2-5, wherein the top end of the ejector rod (3) is fixedly connected with a handle (4), the handle (4) is perpendicular to the ejector rod (3), and a sleeve (17) is sleeved outside the handle (4).
7. The pressure relief device for the valve with pressure according to claim 6, wherein a vertical plate (18) is arranged in the sleeve (17), a long hole II (20) for sliding the vertical plate (18) along the length direction of the handle (4) is arranged on the handle (4), and a magnetic attraction assembly (19) matched with each other is arranged on the side surface of the vertical plate (18) facing the ejector rod (3) and the side wall of the corresponding long hole II (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322830940.0U CN220891106U (en) | 2023-10-20 | 2023-10-20 | Pressure relief device for valve with pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322830940.0U CN220891106U (en) | 2023-10-20 | 2023-10-20 | Pressure relief device for valve with pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220891106U true CN220891106U (en) | 2024-05-03 |
Family
ID=90840906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322830940.0U Active CN220891106U (en) | 2023-10-20 | 2023-10-20 | Pressure relief device for valve with pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220891106U (en) |
-
2023
- 2023-10-20 CN CN202322830940.0U patent/CN220891106U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |