CN219757947U - Welding neck flange pressure testing frock - Google Patents
Welding neck flange pressure testing frock Download PDFInfo
- Publication number
- CN219757947U CN219757947U CN202321088669.1U CN202321088669U CN219757947U CN 219757947 U CN219757947 U CN 219757947U CN 202321088669 U CN202321088669 U CN 202321088669U CN 219757947 U CN219757947 U CN 219757947U
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- welding neck
- neck flange
- pressure test
- plug
- tested
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- 238000012360 testing method Methods 0.000 title claims abstract description 116
- 238000003466 welding Methods 0.000 title claims abstract description 74
- 238000007789 sealing Methods 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 10
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a welding neck flange pressure test tool, which comprises: the upper pressure test plug and the lower pressure test plug are uniformly provided with a plurality of connecting holes matched with bolt holes of a pressure welding neck flange to be tested along the circumferential direction, and the pressure welding neck flange to be tested is arranged between the upper pressure test plug and the lower pressure test plug and is connected with the upper pressure test plug and the lower pressure test plug through studs penetrating through the connecting holes; the utility model is used on automatic or semi-automatic equipment to meet the pressure testing requirement of the welding neck flange and ensure the product quality.
Description
Technical Field
The utility model relates to the technical field of flange testing, in particular to a welding neck flange pressure test tool.
Background
In engineering projects such as FPSO, offshore platform, underwater pipeline and other important facilities, in order to reduce the problem of subsequent product pressure test, the hydraulic test is provided when the single-piece body is adopted for manufacturing in most cases, so that the product quality and the smooth performance of project engineering are ensured, the special structural form of the welding neck flange is adopted, the difficulty is increased for the design of a test tool, the pressure bearing capacity of the dangerous section of the welding neck flange cannot be tested by the test tool in the prior art, and the requirement of the flange test cannot be met.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the welding neck flange pressure testing tool which can ensure the reliability and accuracy of the test, can also test the pressure bearing capacity of the dangerous section of the welding neck flange by water injection and pressure maintaining, is easy to operate, saves time and labor, has a simple integral structure, is convenient to install and adjust, and ensures the quality of the welding neck flange.
In order to solve the technical problems, the technical scheme adopted by the utility model is a welding neck flange pressure test tool, which is applied to pressure test of a pipeline welding neck flange and comprises the following steps: the upper pressure test plug and the lower pressure test plug are uniformly provided with a plurality of connecting holes matched with bolt holes on a pressure welding neck flange to be tested along the circumferential direction, and the pressure welding neck flange to be tested is arranged between the upper pressure test plug and the lower pressure test plug and connected with the upper pressure test plug and the lower pressure test plug through the bolt holes and the connecting holes; the upper pressure test plug is provided with a groove matched with a welding neck joint of the pressure welding neck flange to be tested, a first sealing piece is arranged in the groove, a second sealing piece is arranged between the pressure welding neck flange to be tested and the lower pressure test plug, the upper pressure test plug is provided with a discharge plug, and the lower pressure test plug is provided with a liquid inlet pressure test port.
In a preferred embodiment of the present utility model, the drain plug is communicated with the inner cavity of the to-be-tested press-welding neck flange through a drain channel, and the liquid inlet pressure test port is communicated with the inner cavity of the to-be-tested press-welding neck flange through a liquid inlet channel.
In a preferred embodiment of the present utility model, the first seal is a first "O" ring seal.
In a preferred embodiment of the utility model, the shoulder of the lower pressure testing plug is inserted into the inner cavity of the pressure welding neck flange to be tested, and the shoulder and the inner cavity are sealed by a second sealing piece.
In a preferred embodiment of the present utility model, the second sealing member is a double-layer "O" type sealing ring sleeved on the shoulder of the lower pressure testing plug.
In a preferred embodiment of the present utility model, at least two sets of to-be-tested neck flanges are disposed between the upper pressure testing plug and the lower pressure testing plug, adjacent neck flanges to be tested are disposed opposite to each other, and a plugboard is disposed between the adjacent neck flanges to be tested, and the plugboard has a central through hole communicated with an inner cavity of the neck flange to be tested.
In a preferred embodiment of the present utility model, a third sealing member is respectively disposed between two sides of the insert plate and the neck flange to be tested.
In a preferred embodiment of the present utility model, the third sealing member is a third O-ring or nylon grommet.
In a preferred embodiment of the present utility model, the second sealing member is a second O-ring disposed in a groove of the lower pressure testing plug.
In a preferred embodiment of the present utility model, the side surfaces of the upper pressure test plug and the lower pressure test plug are both provided with hanging rings.
The beneficial effects of the utility model are as follows: the utility model discloses a weld neck flange pressure testing frock, accessible feed liquor pressure test mouth is to the intracavity of welding the neck after injecting the water of settlement pressure pressurize 10-15 minutes to the pressure-bearing capacity of the dangerous cross-section of test welding neck flange (welding neck thinnest department promptly), reliability, the accuracy of test can be guaranteed, easy operation, labour saving and time saving, overall structure is simple, easy to assemble and adjustment.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a block diagram of a first embodiment of a neck flange pressure test fixture of the present utility model;
FIG. 2 is a cross-sectional view of a first embodiment of a neck flange pressure test fixture of the present utility model;
FIG. 3 is an enlarged view of a portion of the structure of FIG. 2;
FIG. 4 is a diagram showing a construction of a second embodiment of a neck flange pressure test fixture according to the present utility model;
FIG. 5 is a cross-sectional view of a second embodiment of a neck flange pressure test fixture of the present utility model;
FIG. 6 is a block diagram of a third embodiment of a neck flange pressure test fixture according to the present utility model;
FIG. 7 is a cross-sectional view of a third embodiment of a neck flange pressure test fixture of the present utility model.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. 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.
Referring to fig. 1-3, the utility model discloses a welding neck flange pressure test tool, which is applied to pressure test of a pipeline welding neck flange, and comprises the following steps: the upper pressure test plug 1 and the lower pressure test plug 2 are uniformly provided with a plurality of connecting holes 4 matched with bolt holes on the pressure welding neck flange 3 to be tested along the circumferential direction, the pressure welding neck flange to be tested is arranged between the upper pressure test plug and the lower pressure test plug, and the bolts 5 penetrate through the bolt holes and the connecting holes and then are screwed and fixed by nuts 6; the upper pressure testing plug is provided with a groove (not shown in the figure) matched with the welding neck joint of the pressure welding neck flange to be tested on one side of the pressure testing plug facing the pressure welding neck flange to be tested, a first sealing piece 7 is arranged in the groove, a second sealing piece 8 is arranged between the pressure welding neck flange to be tested and the lower pressure testing plug so as to ensure tightness between the pressure welding neck flange to be tested and the upper pressure testing plug and tightness between the pressure welding neck flange to be tested and the lower pressure testing plug, the upper pressure testing plug is provided with a discharging plug 9, the lower pressure testing plug is provided with a liquid inlet pressure testing port 10, the discharging plug is communicated with the inner cavity of the pressure welding neck flange to be tested through a discharging channel 11, the liquid inlet pressure testing port is communicated with the inner cavity 21 of the pressure welding neck flange to be tested through a liquid inlet pressure testing port, when the pressure testing is carried out, after the pressure testing port is increased to a set pressure value, the pressure testing of the welding neck flange can be met conveniently and rapidly, particularly the pressure testing of the welding neck flange can be tested in ten minutes, the reliability and accuracy of the pressure testing can be ensured.
Specifically, the first sealing piece is a first O-shaped sealing ring, the diameter of the shoulder of the lower pressure testing plug is slightly smaller than the diameter of the inner cavity of the welding neck flange, the shoulder of the lower pressure testing plug is inserted into the inner cavity of the welding neck flange to be tested, and the two sealing pieces are sealed through a double-layer O-shaped sealing ring.
In addition, the side surfaces of the upper pressure testing plug and the lower pressure testing plug are respectively provided with a hanging ring 14, so that the lifting is convenient.
Referring to fig. 4-5, when two or more welding neck flanges need to be tested synchronously, as in embodiment 1, the multiple welding neck flanges are fastened and fixed with the upper pressure testing plug and the lower pressure testing plug by the studs and nuts, wherein adjacent welding neck flanges to be tested are arranged back to back, and a plugboard 15 is arranged between the two adjacent welding neck flanges, the plugboard is provided with a central through hole 16 communicated with the inner cavity of the welding neck flange to be tested, and third sealing elements 17 are respectively arranged between two sides of the plugboard and the welding neck flanges to be tested, and are rubber O-shaped sealing rings or nylon backing rings so as to ensure tightness.
Referring to fig. 6-7, the pressure measuring welding neck flange is placed between the upper pressure testing plug and the lower pressure testing plug, the discharging plug and the liquid inlet pressure testing port are respectively arranged at two sides of the upper pressure testing plug and are communicated with the inner cavity of the pressure measuring welding neck flange, the pressure measuring welding neck flange is sealed with the upper pressure testing plug and the lower pressure testing plug through an O-shaped sealing ring 19 or a nylon backing ring 20, and then the assembled fixture is placed on an external clamping mechanism for clamping and then water injection testing.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.
Claims (10)
1. Welding neck flange pressure testing frock is applied to the pressure testing of pipeline welding neck flange, its characterized in that includes: the upper pressure test plug and the lower pressure test plug are uniformly provided with a plurality of connecting holes matched with bolt holes on a pressure welding neck flange to be tested along the circumferential direction, and the pressure welding neck flange to be tested is arranged between the upper pressure test plug and the lower pressure test plug and connected with the upper pressure test plug and the lower pressure test plug through the bolt holes and the connecting holes; the upper pressure test plug is provided with a groove matched with a welding neck joint of the pressure welding neck flange to be tested, a first sealing piece is arranged in the groove, a second sealing piece is arranged between the pressure welding neck flange to be tested and the lower pressure test plug, the upper pressure test plug is provided with a discharge plug, and the lower pressure test plug is provided with a liquid inlet pressure test port.
2. The welding neck flange pressure testing tool according to claim 1, wherein the drain plug is communicated with the inner cavity of the welding neck flange to be tested through a drain channel, and the liquid inlet pressure testing port is communicated with the inner cavity of the welding neck flange to be tested through a liquid inlet channel.
3. The welding neck flange pressure test fixture of claim 1, wherein the first sealing member is a first "O" type sealing ring.
4. The welding neck flange pressure testing tool according to claim 2, wherein the shoulder of the lower pressure testing plug is inserted into the inner cavity of the welding neck flange to be tested, and sealing is achieved between the lower pressure testing plug and the inner cavity through the second sealing piece.
5. The welding neck flange pressure test fixture of claim 4, wherein the second sealing member is a double-layer O-shaped sealing ring sleeved on the shoulder of the lower pressure test plug.
6. The welding neck flange pressure testing tool according to claim 1, wherein at least two groups of to-be-tested welding neck flanges are arranged between the upper pressure testing plug and the lower pressure testing plug, adjacent to-be-tested welding neck flanges are arranged in a back-to-back mode, and a plugboard is arranged between the adjacent to-be-tested welding neck flanges and provided with a central through hole communicated with an inner cavity of the to-be-tested welding neck flange.
7. The welding neck flange pressure test fixture of claim 6, wherein a third sealing member is respectively arranged between two sides of the insert plate and the welding neck flange to be tested.
8. The welding neck flange pressure test fixture of claim 7, wherein the third sealing member is a third "O" type sealing ring or a nylon backing ring.
9. The welding neck flange pressure test fixture of claim 6, wherein the second sealing member is a second O-shaped sealing ring arranged in a groove of the lower pressure test plug.
10. The welding neck flange pressure test fixture of claim 1, wherein the sides of the upper pressure test plug and the lower pressure test plug are provided with hanging rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321088669.1U CN219757947U (en) | 2023-05-09 | 2023-05-09 | Welding neck flange pressure testing frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321088669.1U CN219757947U (en) | 2023-05-09 | 2023-05-09 | Welding neck flange pressure testing frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219757947U true CN219757947U (en) | 2023-09-26 |
Family
ID=88076289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321088669.1U Active CN219757947U (en) | 2023-05-09 | 2023-05-09 | Welding neck flange pressure testing frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219757947U (en) |
-
2023
- 2023-05-09 CN CN202321088669.1U patent/CN219757947U/en active Active
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