CN209745550U - Two-way pressure test device of back pressure valve - Google Patents
Two-way pressure test device of back pressure valve Download PDFInfo
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- CN209745550U CN209745550U CN201920364526.6U CN201920364526U CN209745550U CN 209745550 U CN209745550 U CN 209745550U CN 201920364526 U CN201920364526 U CN 201920364526U CN 209745550 U CN209745550 U CN 209745550U
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- back pressure
- pressure valve
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Abstract
The utility model relates to a two-way pressure testing device of a back pressure valve, which comprises a body and a plug; the body is internally provided with a strip-shaped cavity for accommodating the backpressure valve assembly, and one side of the strip-shaped cavity is communicated with the first interface through a vent hole; the other side of the strip-shaped cavity is provided with internal threads; the plug is provided with an external thread matched with the internal thread, a first sealing ring is arranged around the front part of the plug, the plug is provided with a central through hole, and the outer end of the central through hole is communicated with the second interface; after the plug and the body are screwed and fixed, the back pressure valve component is sealed in the elongated cavity, and a second sealing ring is arranged on the back pressure valve component, so that the back pressure valve component is positioned at the left side and the right side of the second sealing ring to form sealing; any one side of the first interface and the second interface is used as a pressurizing side, and the other side is used as a blocking side. The utility model discloses simple structure, convenient to use, swift easily operate, can carry out two-way pressure testing experiment to the back pressure valve fast.
Description
Technical Field
The utility model relates to a two-way pressure test device of back pressure valve belongs to back pressure valve and detects technical field.
Background
The operating principle of the back pressure valve is as follows: fluid enters from the inlet of the pressure valve and is blocked by the diaphragm, so that the fluid exerts upward pressure on the diaphragm. When the pressure is enough, the spring is compressed, and the fluid jacks up the diaphragm to form a channel and flows out from the outlet of the backpressure valve; if the fluid pressure is not enough, a pressure building is formed, the inlet pressure is increased until the rated pressure is reached, and the diaphragm is jacked up to form a channel.
For the use of back pressure valves, there are generally no conditions and devices to check the bi-directional tightness of the back pressure valve, such as: in the Christmas tree, a back pressure valve is arranged in an oil pipe hanger, and the back pressure valve is required to be adopted to seal an inner hole of an oil pipe when a blowout preventer is disassembled or the Christmas tree is installed and disassembled; when the lower main valve is maintained and replaced, a back pressure valve is also needed to seal the inner hole of the oil pipe. If the back pressure valve has a problem of pressure build-up, it will have a great adverse effect on the product.
therefore, how to perform an integral two-way airtight valve test on the back pressure valve before the Christmas tree product leaves the factory to verify whether the back pressure valve meets the design and use requirements is a technical problem which is not solved in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a two-way pressure test device of back pressure valve, simple structure, convenient to use, swift easily operate, can carry out two-way pressure testing experiment to the back pressure valve fast.
The utility model adopts the following technical proposal:
a bidirectional pressure testing device of a back pressure valve comprises a body 1 and a plug 2; the body 1 is internally provided with a strip-shaped cavity for accommodating the backpressure valve assembly, and one side of the strip-shaped cavity is communicated with the first interface 5 through a vent hole; the other side of the strip-shaped cavity is provided with internal threads; the plug 2 is provided with an external thread matched with the internal thread, a first sealing ring 3 is arranged around the front part of the plug, the plug 2 is provided with a central through hole, and the outer end of the central through hole is communicated with a second interface 6; after the plug 2 and the body 1 are screwed and fixed, the back pressure valve assembly is sealed in the elongated cavity, and a second sealing ring 4 is arranged on the back pressure valve assembly, so that the back pressure valve assembly is positioned at the left side and the right side of the second sealing ring 4 to form sealing; either one side of the first port 5 or the second port 6 serves as a pressurizing side, and the other side serves as a blocking side.
Furthermore, a guide inclined plane 7 is arranged on one side of the strip-shaped cavity connected with the plug 2, so that the back pressure valve component can be conveniently installed.
Further, the plug 2 is cylindrical, and the elongated cavity in the body 1 is also cylindrical.
Further, the vent hole and the central through hole have the same inner diameter and are coaxial.
Further, the first port 5 and the second port 6 have the same inner diameter and are coaxial.
Further, the body 1 is rectangular in shape.
Furthermore, one end of the back pressure valve assembly is provided with an inclined surface, and when the back pressure valve assembly is installed, one end with the inclined surface is close to the first connector 5, and the other end is close to the plug 2.
Further, the outer diameter of the back pressure valve component is equal to the diameter of the elongated cavity.
Furthermore, a second sealing ring 4 is arranged on the outer side of the back pressure valve component and used for forming sealing with the elongated cavity.
The beneficial effects of the utility model reside in that:
1) An integrated bi-directional pressure test device for backpressure valve detection is provided.
2) Simple structure, convenient to use, swift easily operate, can carry out two-way pressure testing experiment to the back pressure valve fast.
3) The detection precision is high.
4) The pressure sensor is particularly suitable for a user of a back pressure valve, provides a set of bidirectional pressure detection device suitable for the user of the back pressure valve, and protects the driving for the quality and reliability of the product.
Drawings
FIG. 1 is a perspective view of the construction of a back pressure valve assembly.
Fig. 2 is a schematic structural diagram of the back pressure valve bidirectional pressure testing device of the present invention, wherein the back pressure valve assembly is installed inside.
In the figure, 1, a body, 2, a plug, 3, a first sealing ring, 4, a second sealing ring, 5, a first interface and 6, a second interface are arranged.
Detailed Description
the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-2, a two-way pressure testing device of a backpressure valve comprises a body 1 and a plug 2; the body 1 is internally provided with a strip-shaped cavity for accommodating the backpressure valve assembly, and one side of the strip-shaped cavity is communicated with the first interface 5 through a vent hole; the other side of the strip-shaped cavity is provided with internal threads; the plug 2 is provided with an external thread matched with the internal thread, a first sealing ring 3 is arranged around the front part of the plug, the plug 2 is provided with a central through hole, and the outer end of the central through hole is communicated with a second interface 6; after the plug 2 and the body 1 are screwed and fixed, the back pressure valve assembly is sealed in the elongated cavity, and a second sealing ring 4 is arranged on the back pressure valve assembly, so that the back pressure valve assembly is positioned at the left side and the right side of the second sealing ring 4 to form sealing; either one side of the first port 5 or the second port 6 serves as a pressurizing side, and the other side serves as a blocking side.
In this embodiment, referring to fig. 2, the side of the elongated cavity connected to the plug 2 is provided with a guiding bevel 7 to facilitate the installation of the back pressure valve assembly.
In this embodiment, the plug 2 is cylindrical, and the elongated cavity in the body 1 is also cylindrical.
In this embodiment, referring to fig. 2, the vent hole is of the same inner diameter and coaxial with the central through hole.
In this embodiment, referring to fig. 2, the first port 5 and the second port 6 are of the same inner diameter and coaxial.
In this embodiment, the body 1 is rectangular in shape.
in this embodiment, with reference to fig. 2, the back pressure valve assembly has an inclined end, which is close to the first port 5 and close to the plug 2 when installed.
in this embodiment, referring to FIG. 2, the back pressure valve assembly has an outer diameter equal to the diameter of the elongated cavity.
in this embodiment, referring to fig. 2, the back pressure valve assembly is provided with a second sealing ring 4 on the outside for sealing with the elongated cavity.
In a specific implementation, the second sealing ring 4 is first mounted on the sealing groove of the back pressure valve, the back pressure valve is installed in the device as shown in fig. 2, the back pressure valve is pressed into a fixed position and then screwed into the lower plug 2, and at this time, the back pressure valve can be tested. As shown in figure 2, the device is provided with test holes in two directions, and pressure test can be carried out in both directions. The second seal ring 4 functions as a split seal. The pressure testing device is simple in structure, easy to operate and capable of safely and quickly testing the pressure of the backpressure valve.
The above are preferred embodiments of the present invention, and those skilled in the art can make various changes or improvements on the above embodiments without departing from the general concept of the present invention, and these changes or improvements should fall within the scope of the present invention.
Claims (8)
1. The utility model provides a two-way pressure test device of back pressure valve which characterized in that:
Comprises a body (1) and a plug (2);
A strip-shaped cavity for accommodating the backpressure valve assembly is formed in the body (1), and one side of the strip-shaped cavity is communicated with the first interface (5) through a vent hole; the other side of the strip-shaped cavity is provided with internal threads;
The plug (2) is provided with an external thread matched with the internal thread, a first sealing ring (3) is arranged around the front part of the plug, the plug (2) is provided with a central through hole, and the outer end of the central through hole is communicated with a second interface (6); after the plug (2) and the body (1) are screwed and fixed, the backpressure valve assembly is sealed in the elongated cavity, and a second sealing ring (4) is arranged on the backpressure valve assembly, so that the backpressure valve assembly is positioned at the left side and the right side of the second sealing ring (4) to form sealing;
And either one side of the first interface (5) and the second interface (6) is used as a pressurizing side, and the other side is used as a blocking side.
2. The back pressure valve bi-directional pressure test device of claim 1, wherein: one side of the strip-shaped cavity, which is connected with the plug (2), is provided with a guide inclined plane (7), so that the back pressure valve component can be conveniently installed.
3. The back pressure valve bi-directional pressure test device of claim 1, wherein: the plug (2) is cylindrical, and the elongated cavity in the body (1) is cylindrical.
4. The back pressure valve bi-directional pressure test device of claim 1, wherein: the vent hole and the central through hole have the same inner diameter and are coaxial.
5. The back pressure valve bi-directional pressure test device of claim 1, wherein: the first interface (5) and the second interface (6) have the same inner diameter and are coaxial.
6. The back pressure valve bi-directional pressure test device of claim 1, wherein: the body (1) is rectangular in shape.
7. The back pressure valve bi-directional pressure test device of claim 1, wherein: one end of the back pressure valve component is provided with an inclined plane, and when the back pressure valve component is installed, one end with the inclined plane is close to the first connector (5), and the other end is close to the plug (2).
8. The back pressure valve bi-directional pressure test device of claim 1, wherein: the outer diameter of the back pressure valve component is equal to the diameter of the elongated cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920364526.6U CN209745550U (en) | 2019-03-21 | 2019-03-21 | Two-way pressure test device of back pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920364526.6U CN209745550U (en) | 2019-03-21 | 2019-03-21 | Two-way pressure test device of back pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209745550U true CN209745550U (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920364526.6U Active CN209745550U (en) | 2019-03-21 | 2019-03-21 | Two-way pressure test device of back pressure valve |
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| Country | Link |
|---|---|
| CN (1) | CN209745550U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153215A (en) * | 2021-04-23 | 2021-07-23 | 大庆辰平钻井技术服务有限公司 | Chemical plugging method for high-water flooded layer of deflecting section of ultra-short radius horizontal well |
-
2019
- 2019-03-21 CN CN201920364526.6U patent/CN209745550U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153215A (en) * | 2021-04-23 | 2021-07-23 | 大庆辰平钻井技术服务有限公司 | Chemical plugging method for high-water flooded layer of deflecting section of ultra-short radius horizontal well |
| CN113153215B (en) * | 2021-04-23 | 2022-11-29 | 大庆辰平钻井技术服务有限公司 | Chemical plugging method for high-water-flooded layer of deflecting section of ultra-short radius horizontal well |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20221017 Granted publication date: 20191206 |
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| PP01 | Preservation of patent right |