CN207456712U - A kind of pressure test device for thread seal - Google Patents
A kind of pressure test device for thread seal Download PDFInfo
- Publication number
- CN207456712U CN207456712U CN201721253254.XU CN201721253254U CN207456712U CN 207456712 U CN207456712 U CN 207456712U CN 201721253254 U CN201721253254 U CN 201721253254U CN 207456712 U CN207456712 U CN 207456712U
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- pressure test
- side outlet
- outlet
- water
- pressure
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Abstract
The utility model discloses a kind of pressure test device for thread seal, including：The side outlet set in oil pipe wellhead body, pressure test axis, the pressure test axis is connected with the side outlet, blank flange is provided on the side outlet, it is offered on the pressure test axis and the matched external screw thread of the side outlet, the external screw thread one side is connected with stretching into the plunger in the side outlet, opposite side is connected with instrument connection, described instrument connection one end is connected with test pump, the other end is connected with water outlet, the water outlet is communicated with the instrument connection, and the utility model can carry out independent detection to the leakproofness of each side outlet screw thread；Since test bore dia is small, institute's water requirement is small, and water injection time is extremely short, on the one hand saves water resource, and on the other hand since water consumption is small, boosting is fast, so pressure rising time can be ignored, therefore the entire testing time is short and efficient.
Description
Technical field
The utility model is related to a kind of pressure test devices for thread seal, belong to oil production equipment technology neck
Domain.
Background technology
In the specification of API6A, four entire body of tubing head and Integral type well-mouth body are each outside skim-coat casing for hanging
The wellhead assembly parts of layer oil pipe and sealing oil pipe, are the indispensable important spare parts of wellhead assembly, due to tubing head four
Entire body and Integral type well-mouth body need to carry out pressure testing dispatching from the factory, and the purpose is to verify the reliability of material structure and oil pipe
Whether the intensity and sealing performance of first four entire body meet API6A code requirements.
It is provided in API6A specifications, tubing head bulk strength test pressure is 1.5 using upper and lower flange rated pressure
Again or 2 times are tested, and side outlet thread seal test pressure is tested using 1 times of side outlet rated pressure, the two institute
Need rated pressure different, so cannot be directly using screw plug (such as:Valve is dismantled stifled/VR and is blocked up) the screw thread progress of connection side outlet
, it is necessary to separately test, wherein side outlet thread seal experiment is generally strong in body for casing rigidity and the experiment of side outlet thread seal
Degree carries out after test, and bulk strength experiment is generally using the sealing of blank flange+gasket ring (or using the upper and lower method of column+experiment
Blue form), side outlet carries out pressure testing, bulk strength tests it using blank flange+gasket ring closure by test hole water filling
Afterwards, side outlet blank flange is removed, after the water outflow having been injected into, the valve of standard is dismantled into stifled/VR and blocks up and is screwed into side outlet screw thread
It is interior, then water filling carries out thread seal experiment again.
Have from traditional thread seal experiment as can be seen, dismantling stifled/VR using the valve of standard and blocking up progress thread seal
These shortcomings below.
After bulk strength has been tested, the water having been injected into is needed at least to flow out to horizontal plane less than screw thread minimum point,
Can install valve dismounting it is stifled/VR blocks up, and chamber body filled water again and is suppressed, waste water resource；The water injection hole in routine test hole
Generally existThe time filled needed for chamber body is especially long, makes work efficiency very low；Regular screw threads plug tests spiral shell
When line seals, after filling water in body, pressure is boosted to test pressure (such as 7500PSI=52.5Mpa) by testing equipment from 0,
The consuming time is long, adds the service life that testing equipment is also reduced while power consumption.
Utility model content
The purpose of this utility model is surveyed in view of the deficienciess of the prior art, providing a kind of pressure for thread seal
Trial assembly is put, simple in structure, easy to operate, energy conservation and environmental protection, time saving and energy saving test instrument, available for four entire body of tubing head and entirety
Formula wellhead body dispatch from the factory test when side outlet thread seal pressure testing, operation stream can be simplified by the pressure test device
Journey improves production efficiency, reduces production cost, optimizes production environment.
To achieve the above object, the utility model provides a kind of pressure test device for thread seal, including：Oil
The side outlet set in pipe wellhead body, pressure test axis, the pressure test axis are connected with the side outlet, the side outlet
On be provided with blank flange, offered on the pressure test axis and the matched external screw thread of the side outlet, the external screw thread
One side is connected with stretching into the plunger in the side outlet, and opposite side is connected with instrument connection, described instrument connection one end and test pump phase
Even, the other end is connected with water outlet, and the water outlet is communicated with the instrument connection.
In a kind of pressure test device for thread seal as described above, wherein, the instrument connection is opened in described
In the axis body of pressure test axis.
In a kind of pressure test device for thread seal as described above, wherein, the center of the instrument connection and institute
The axle center for stating pressure test axis is on same straight line.
In a kind of pressure test device for thread seal as described above, wherein, the outer plunger surface offers
Several closure gasket grooves, are provided with matched O-ring in the closure gasket groove, the water outlet be arranged on the closure gasket groove and
Between the external screw thread and its outlet opens up the lower end of the pressure test axis.
In a kind of pressure test device for thread seal as described above, wherein, the O-ring and the external screw thread
Between form a confined space, the O-ring is at least provided with three.
In a kind of pressure test device for thread seal as described above, wherein, there are two the side outlet settings
Or four and be symmetrical arranged.
The beneficial effects of the utility model are：This pressure test device for thread seal can be to each side outlet
The leakproofness of screw thread carries out independent detection；Since test bore dia is small, institute's water requirement is small, and water injection time is extremely short, on the one hand saves
Water resource, on the other hand since water consumption is small, boosting is fast, so pressure rising time can be ignored, therefore the entire testing time is short
It is and efficient；Simple in structure, easy to operate, energy conservation and environmental protection, time saving and energy saving, the utility model can be used for four entire body of tubing head and whole
Body formula wellhead body dispatch from the factory test when side outlet thread seal pressure testing, can with streamline operation, improve production efficiency,
Production cost is reduced, optimizes production environment.
Description of the drawings
Fig. 1 is a kind of principle signal for pressure test device for thread seal that the utility model embodiment provides
Figure；
Fig. 2 is a kind of structural representation for pressure test device for thread seal that the utility model embodiment provides
Figure.
The mark of each component of attached drawing is as follows：1st, side outlet；2nd, pressure test axis；3rd, external screw thread；4th, plunger；5th, instrument connection；
6th, blank flange；7th, test pump；8th, water outlet；9th, O-ring.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate, the present embodiment is with the utility model
Implemented under premised on technical solution, it should be understood that these embodiments are merely to illustrate the utility model rather than limit this reality
With new scope.
Embodiment 1
A kind of pressure test device for thread seal, including：The side outlet 1 set in oil pipe wellhead body, pressure
Axis 2 is tested, the pressure test axis 2 is connected with the side outlet 1, and blank flange 6, the pressure are provided on the side outlet 1
Offered on power test axis 2 with the 1 matched external screw thread 3 of side outlet, 3 one side of external screw thread and stretch into the side outlet
Plunger 4 in 1 is connected, and opposite side is connected with instrument connection 5, and described 5 one end of instrument connection is connected with test pump 7, on the test pump 7
Switch is provided with, a diameter of 2mm-3mm of the instrument connection 5 can ignore since water consumption is small, substantially so water injection time
Also ignore substantially, the other end is connected with water outlet 8, and the water outlet 8 is communicated with the instrument connection 5.
Oil pipe wellhead body is divided into four entire bodies and monoblock type, wherein four entire bodies are provided with two side outlets and are symmetrical arranged,
For monoblock type at least provided with four side outlets, side outlet inner surface is provided with the matched screw thread of external screw thread.
Embodiment 2
On the basis of above example, the instrument connection 5 is opened in the axis body of the pressure test axis 2, the survey
The center of prospect hole 5 and the axle center of the pressure test axis 2 are on same straight line, and 4 outer surface of plunger offers several close
Seal ring slot, is provided with matched O-ring 9 in the closure gasket groove, and the O types circle 9 is at least provided with three, the water outlet
Mouth 8 is arranged between the closure gasket groove and the external screw thread 3 and its outlet opens up the lower end of the pressure test axis 2, due to
Regular screw threads plug does not carry sealing space, and when pressure testing needs to fill entire chamber body, and space is big, and water consumption is big, during water filling
Between it is long, so the technical solution is by forming the confined space of a very little, water consumption between the O-ring 9 and the external screw thread 3
Minimum, water injection time is extremely short, saves water resource.
Embodiment 3
A kind of method for testing pressure for thread seal comprises the following steps：1) blank flange is removed, opens test pump
On valve, pressure testing water begins to flow out；2) after the outflow of pressure testing water, then the mounting O-shaped rings in closure gasket groove are surveyed pressure
Trial assembly is put in the side outlet for being screwed into and being set on oil pipe body, and the side outlet sets there are two or four and is symmetrical arranged, O-shaped
Circle and external screw thread form a sealing space, and pressure testing water is entered from instrument connection in sealing space；3) then to sealing space into
Row boosting, pressure carry out voltage stabilizing after boosting to rated pressure by zero, and since water filling bore dia is small, water filling is quick, and boosting is fast, therefore rise
Time very little is pressed, can quickly go out testing result；4) during voltage stabilizing, if not seeing the water of infiltration, pressure gauge at external screw thread
Be not depressured, then show side outlet thread seal performance qualification, it is on the contrary then to be unqualified, due to detection four entire body structure of body oil pipe
Two side outlets are typically provided with, at least four side outlet of Integral type well-mouth body can go out arbitrary one side with this method
Mouthful pressure detecting is carried out, during compared with plain screw plug pressure testing, revealed if having at one, the test knot of other side outlets can be influenced
Structure, stronger for the method for testing pressure practicability of thread seal, application range is also wider.
This pressure test device for thread seal can carry out independent inspection to the leakproofness of each side outlet screw thread
It surveys；Since test bore dia is small, institute's water requirement is small, and water injection time is extremely short, on the one hand saves water resource, on the other hand due to water
Measure small, boosting is fast, so pressure rising time can be ignored, therefore the entire testing time is short and efficient；Simple in structure, operation side
Just, energy conservation and environmental protection, time saving and energy saving, side during test that the utility model can be used for four entire body of tubing head and Integral type well-mouth body dispatches from the factory
The pressure testing of thread seal is exported, can production efficiency be improved with streamline operation, reduces production cost, optimization production ring
Border.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The scope of type is indicated by the appended claims rather than the foregoing description, it is intended that will fall containing in the equivalent requirements of the claims
All changes in justice and scope are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
Using specification as an entirety, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. a kind of pressure test device for thread seal, including：
The side outlet (1) set in oil pipe wellhead body,
Pressure test axis (2), the pressure test axis (2) are connected with the side outlet (1),
It is characterized in that：Blank flange (6) is provided on the side outlet (1), is offered on the pressure test axis (2) and institute
Side outlet (1) matched external screw thread (3) is stated, external screw thread (3) one side is with stretching into the plunger (4) in the side outlet (1)
It is connected, opposite side is connected with instrument connection (5), and described instrument connection (5) one end is connected with test pump (7), the other end and water outlet (8)
It is connected, the water outlet (8) communicates with the instrument connection (5).
2. a kind of pressure test device for thread seal according to claim 1, it is characterised in that：The instrument connection
(5) it is opened in the axis body of the pressure test axis (2).
3. a kind of pressure test device for thread seal according to claim 1, it is characterised in that：The instrument connection
(5) center and the axle center of the pressure test axis (2) is on same straight line.
4. a kind of pressure test device for thread seal according to claim 1, it is characterised in that：The plunger
(4) outer surface offers several closure gasket grooves, and matched O-ring (9), the water outlet are provided in the closure gasket groove
(8) it is arranged between the closure gasket groove and the external screw thread (3) and its outlet opens up the lower end of the pressure test axis (2).
5. a kind of pressure test device for thread seal according to claim 4, it is characterised in that：The O-ring
(9) confined space is formed between the external screw thread (3), the O-ring (9) is at least provided with three.
6. a kind of pressure test device for thread seal according to claim 1, it is characterised in that：The side outlet
(1) set there are two or four and be symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253254.XU CN207456712U (en) | 2017-09-28 | 2017-09-28 | A kind of pressure test device for thread seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253254.XU CN207456712U (en) | 2017-09-28 | 2017-09-28 | A kind of pressure test device for thread seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207456712U true CN207456712U (en) | 2018-06-05 |
Family
ID=62284514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721253254.XU Expired - Fee Related CN207456712U (en) | 2017-09-28 | 2017-09-28 | A kind of pressure test device for thread seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207456712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006823A (en) * | 2019-12-25 | 2020-04-14 | 中国海洋石油集团有限公司 | Self-sealing test flange and sealing monitoring method |
-
2017
- 2017-09-28 CN CN201721253254.XU patent/CN207456712U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006823A (en) * | 2019-12-25 | 2020-04-14 | 中国海洋石油集团有限公司 | Self-sealing test flange and sealing monitoring method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20210928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |