CN203686461U - Capture device for leaked gas during internal pressure test of pipe - Google Patents
Capture device for leaked gas during internal pressure test of pipe Download PDFInfo
- Publication number
- CN203686461U CN203686461U CN201320867908.3U CN201320867908U CN203686461U CN 203686461 U CN203686461 U CN 203686461U CN 201320867908 U CN201320867908 U CN 201320867908U CN 203686461 U CN203686461 U CN 203686461U
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- Prior art keywords
- leakage
- test
- sealing ring
- pipe
- ring
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- Expired - Lifetime
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- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 abstract description 13
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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Abstract
The utility model provides a capture device for leaked gas during an internal pressure test of a pipe. The device comprises a sealing ring, a pressure ring and a compression bolt, wherein two O-shaped rubber rings are arranged on the sealing ring, so that the two O-shaped rubber rings, a pipe body, a coupling and the sealing ring form an annular cavity; a closed annular cavity is formed after compression via the compression bolt and used for collecting the leaked gas; a connecting hole is formed in the sealing ring in advance and connected with a leakage detection device, so that detection of a leakage rate of a joint is accomplished; and a calibration hole is formed in the sealing ring, so that after the device is assembled on a test sample, the whole gas capture device and the leakage detection device are subjected to system calibration via the hole, and a system cannot be used for performing a leakage test until the collection efficiency of the system is greater than 70%. The device has the benefits that the device is simple in structure, convenient to operate, not easy to damage, and high in reliability; the sealing efficiency is up to above 80%; no detection dead zone exists; a success rate of once mounting testing of the device is above 95%; and the device provides technical support for ensuring the leakage detection accuracy and the test period of the leakage test of a new joint product.
Description
Technical field
The seizure device of gas leakage when the utility model relates to a kind of tubing inner pressure test, is widely used in the full-scale inner pressuring sealing performance test in kind of OCTG.
Background technique
Before oil well pipe new product puts goods on the market, must carry out leakage test to detect the sealability of its joint, once joint leaks, must collect by this gas leakage seizure device, and connect leak detection system, monitor record leakage situation.Existing seal ring is this demarcation hole not, its demarcation is by connecting tee on leak detection extension bar, connecing respectively leakage detection apparatus is connected with calibrating device and collecting device, make like this to demarcate the blind area that existence is very large, the extension bar of for example hunting leak is stopped up by dirt, collecting device has just been isolated, its collecting efficiency be inspection less than, such demarcation is invalid.
Improve test data is provided for new product designs, therefore require this gas leakage seizure device reliability and durability, gather gas efficiency high.Before using, require it to be connected with gas leakage hunting apparatus, this group shot is gathered to the demarcation of gas efficiency.According to ISO13679 test standard, when collecting efficiency must be more than or equal to 70%, just can use this system to carry out Leak testtion, to complete leakage test.
Summary of the invention
For structural deficiency in prior art, the seizure device of gas leakage when the purpose of this utility model is to provide a kind of tubing inner pressure test, to complete oil well pipe leakage test, is conducive to improve leakage test precision.
For achieving the above object, the seizure device of gas leakage when the technical solution adopted in the utility model is to provide a kind of tubing inner pressure test, wherein: this device includes seal ring, pressure ring and hold-down bolt; In two end faces of seal ring, one end is provided with U-groove bevel, is provided with pipe end O RunddichtringO in groove, another end face is conical surface, is provided with hoop end O RunddichtringO in conical surface, and anchor ring one side of seal ring is provided with one and detects hole, and being connected with leak detection extension bar, opposite side is provided with demarcates hole.
Effect of the present utility model is: this Leakage Gas seizure device, and simple in structure, not fragile, reliability is high, and leakage efficiency is up to more than 80%, and without detecting blind area, device installation testing one-time success rate is more than 95%.For guaranteeing that joint new product leakage test precision of detecting leak gas and test period made strong technical support.
Accompanying drawing explanation
Fig. 1 is gas leakage seizure device assembling schematic diagram of the present utility model.
Fig. 2 is gas leakage seizure device seal ring fundamental diagram of the present utility model.
In figure:
1, seal ring 2, pressure ring 3, hold-down bolt 4, hoop end O RunddichtringO
5, pipe end O RunddichtringO 6, flat rubber cushion 7, leak detection extension bar
8, demarcate hole 9, spring washer
Embodiment
During by reference to the accompanying drawings to tubing inner pressure test of the present utility model, the seizure device structure of gas leakage is illustrated.
When tubing inner pressure test of the present utility model, the seizure device structure of gas leakage is, this device includes seal ring 1, pressure ring 2, and hold-down bolt 3; In 1 two end faces of seal ring, one end is provided with U-groove bevel, is provided with hoop end O RunddichtringO 4 in groove, another end face is conical surface, in conical surface, be provided with pipe end O RunddichtringO 5, anchor ring one side of seal ring 1 is provided with one and detects hole, and is connected with leak detection extension bar 7, opposite side is provided with demarcates hole 8, when use, first hold-down bolt 3 is penetrated to the screw of pressure ring 2, fastening hold-down bolt 3 makes pressure ring 2 press seal rings 1, make box cupling, body and seal ring 1 form the annular space of sealing, be used for catching the gas leaking.
Described seal ring 1 is the core of whole device, and in two end face, one end is provided with U-shaped groove for hoop end O RunddichtringO 4 is installed, by compressing rear and coupling face formation sealing; Another end face is processed into the conical surface, by compressing after pipe end O RunddichtringO 5, makes it to form sealing with body; So far, between body, box cupling and seal ring 1, formed ring cavity by two seals, for collecting gas leakage.Seal ring 1 cylinder is provided with one and detects hole, is connected with leakage detection apparatus by leak detection extension bar 7; Another,, for demarcating hole 8, is connected with calibrating device, complete demarcate after with extremely blocking up and tighten, spring washer 9 is used for the impacting force that maintenance applies seal ring, just can come into operation after reliable sealing is provided.
On seal ring 1, demarcating hole 8 and hold-down bolt 3 is innovative points of this device, has both satisfactorily resolved old-fashioned seal ring timing signal and exist the problem of blind area, makes again this device easy to install reliable.Utilize hold-down bolt 3 to compress two covering devices simultaneously, make easier for installation efficiently, make the sealing of device also more reliable.
As shown in Figure 1, 2, the seizure device mode of execution of gas leakage is as follows when tubing inner pressure test of the present utility model:
1, by sample box cupling both sides cleaning wiped clean.
2, hoop end O RunddichtringO 4 is put into after the U-shaped groove of seal ring 1, seal ring 1 is packed into body, hoop is held the direction of O RunddichtringO 4 towards box cupling, and is close to box cupling.
3, pipe end O RunddichtringO 5 is packed into body, and near seal ring 1.
4, pressure ring 2 is packed into body, and near pipe end O RunddichtringO 5.
5, box cupling the other end gas leakage collecting device is installed, the order by 2～4 is successively by seal ring 1, pipe end O RunddichtringO 5, and pressure ring 2, is arranged on box cupling opposite side.
6, need by test, adjust box cupling both sides sealing ring 1 leak hunting aperture direction; Adjust box cupling both sides pressure ring 2 screw directions, make it point-blank, so that hold-down bolt 3 is installed.
7, the hold-down bolt with compression spring 3 is penetrated to pressure ring 2, and fastening.
8, implement complete.
Claims (1)
1. a seizure device for gas leakage when tubing inner pressure test, is characterized in that: this device includes seal ring (1) pressure ring (2) and hold-down bolt (3); In (1) two end face of seal ring, one end is provided with U-groove bevel, in groove, be provided with hoop end O RunddichtringO (4), another end face is conical surface, in conical surface, be provided with pipe end O RunddichtringO (5), anchor ring one side of seal ring (1) is provided with one and detects hole, and is connected with leak detection extension bar (7), and opposite side is provided with demarcates hole (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320867908.3U CN203686461U (en) | 2013-12-26 | 2013-12-26 | Capture device for leaked gas during internal pressure test of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320867908.3U CN203686461U (en) | 2013-12-26 | 2013-12-26 | Capture device for leaked gas during internal pressure test of pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686461U true CN203686461U (en) | 2014-07-02 |
Family
ID=51008359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320867908.3U Expired - Lifetime CN203686461U (en) | 2013-12-26 | 2013-12-26 | Capture device for leaked gas during internal pressure test of pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686461U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362442A (en) * | 2018-03-29 | 2018-08-03 | 山东和富工程检测有限公司 | A kind of fire-fighting plough groove type pipe joint reveals experimental rig without sealing ring |
-
2013
- 2013-12-26 CN CN201320867908.3U patent/CN203686461U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362442A (en) * | 2018-03-29 | 2018-08-03 | 山东和富工程检测有限公司 | A kind of fire-fighting plough groove type pipe joint reveals experimental rig without sealing ring |
| CN108362442B (en) * | 2018-03-29 | 2024-04-19 | 山东和富工程检测有限公司 | Sealing ring-free leakage test device for groove type pipe joint for fire control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190621 Address after: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee after: Tianjin Steel Tube Manufacturing Co.,Ltd. Address before: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee before: TIANJIN PIPE (GROUP) Corp. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |