CN209525069U - A kind of steel tube coupling thread seal system safety testing device - Google Patents
A kind of steel tube coupling thread seal system safety testing device Download PDFInfo
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- CN209525069U CN209525069U CN201920154822.3U CN201920154822U CN209525069U CN 209525069 U CN209525069 U CN 209525069U CN 201920154822 U CN201920154822 U CN 201920154822U CN 209525069 U CN209525069 U CN 209525069U
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- mold core
- sealing ring
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- tube coupling
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Abstract
The utility model provides a kind of steel tube coupling thread seal system safety testing device, including die sleeve, and the mold core is chevron shape, intermediate projections are higher than outer ring protrusion, and intermediate projections are halfpace shape, the halfpace of intermediate projections is equipped with interior swollen sealing ring and pressure ring, and pressure ring compresses interior swollen sealing ring；The box cupling is connect with steel pipe, in the box cupling insertion mold core, so that the interior swollen sealing ring in mold core is located at steel duct；By embracing sealing ring connection outside wide arc gap between the outer ring protrusion and die sleeve of the mold core；Gas vent, inlet opening and pre-sealed water hole are provided on the mold core.The utility model can detect being sealed property of steel tube coupling screw thread, and measurement process only carries out the water pressure test to steel tube end part, be not necessarily to the water pressure test of steel pipe overall length.The utility model is simple and reliable for structure, easy to operate, high-efficient, and green energy conservation is easy to maintain.
Description
Technical field
The utility model belongs to steel pipe equipment field, and in particular to a kind of steel tube coupling thread seal system safety testing device.
Background technique
Recently as the fast development of domestic and international economy, energy demand sharp increase is international, domestic all to increase exploitation
The dynamics of petroleum, natural gas.A kind of economic, long range safely, uninterruptedly of the pipe-line as oil and natural gas
Means of delivery is rapidly developed.Connection between steel pipe is realized by box cupling, it is desirable that the box cupling of steel pipe must be let out without any
Dew.Therefore, the leakproofness of box cupling screw thread must be detected during steel pipe's production.
Traditional steel tube coupling thread seal detection is by integrally carrying out water pressure test detection to whole pipeline, this is just
Cause box cupling water pressure test equipment huge, investment is high, and inconvenient, process is cumbersome, low efficiency, and energy consumption is high, at high cost.
Utility model content
Structure is complicated, at high cost, high energy consumption and efficiency is low in order to overcome existing steel tube coupling water pressure test equipment asks
Topic.The utility model provides a kind of steel tube coupling thread seal system safety testing device, can be sealed to steel tube coupling screw thread
Property detection, measurement process only to steel tube end part carry out the water pressure test, be not necessarily to the water pressure test of steel pipe overall length.The utility model structure letter
Single reliable, easy to operate, high-efficient, green energy conservation is easy to maintain.
The technical solution adopted in the utility model are as follows:
A kind of steel tube coupling thread seal system safety testing device, including die sleeve, the mold core are chevron shape, and intermediate projections are high
In outer ring protrusion, and intermediate projections are halfpace shape, and the halfpaces of intermediate projections is equipped with interior swollen sealing ring and pressure ring, in pressure ring compresses
Swollen sealing ring；The box cupling is connect with steel pipe, in the box cupling insertion mold core, so that the interior swollen sealing ring in mold core is located at
Steel duct；By embracing sealing ring connection outside wide arc gap between the outer ring protrusion and die sleeve of the mold core；It is set on the mold core
It is equipped with gas vent, inlet opening and pre-sealed water hole.
The pre-sealed water hole embraces sealing ring with outside wide arc gap respectively and interior swollen sealing ring is connected to.
The inlet opening is connected to the inner cavity lower part that box cupling, steel pipe and mold core form.
The gas vent is connected to the inner cavity top that box cupling, steel pipe and mold core form.
The second sealing ring is provided between the pressure ring end and mold core.
The mold core is equipped with nut, and nut is screwed on mold core and against pressure ring.
Positioning pin is provided between the die sleeve and mold core.
First sealing ring is installed between the mold core maximum outer ring and die sleeve.
The utility model has the following beneficial effects:
This steel tube coupling thread seal system safety testing device provided by the utility model can carry out steel tube coupling screw thread
Sealing propertytest, measurement process only carry out the water pressure test to steel tube end part, are not necessarily to the water pressure test of steel pipe overall length.The utility model knot
Structure is simple and reliable, easy to operate, high-efficient, and green energy conservation is easy to maintain.
The utility model is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the main view of steel tube coupling thread seal system safety testing device；
Fig. 2 is the top view of steel tube coupling thread seal system safety testing device；
Fig. 3 is the left view of steel tube coupling thread seal system safety testing device.
Appended drawing reference in figure are as follows: 1, die sleeve；2, the first sealing ring；3, mold core；4, sealing ring is embraced outside wide arc gap；5, box cupling；
6, steel pipe；7, the second sealing ring；8, positioning pin；9, interior swollen sealing ring；10, pressure ring；11, nut；12, gas vent；13, it intakes
Hole；14, pre-sealed water hole.
Specific embodiment
Embodiment 1:
Structure is complicated, at high cost, high energy consumption and efficiency is low in order to overcome existing steel tube coupling water pressure test equipment asks
Topic.The utility model provides a kind of steel tube coupling thread seal system safety testing device as shown in Figs. 1-3, can be to steel tube coupling
The detection of being sealed property of screw thread, measurement process only carry out the water pressure test to steel tube end part, are not necessarily to the water pressure test of steel pipe overall length.This reality
Simple and reliable with new structure, easy to operate, high-efficient, green energy conservation is easy to maintain.
A kind of steel tube coupling thread seal system safety testing device, including die sleeve 1, the mold core 3 are chevron shape, intermediate projections
Higher than outer ring protrusion, and intermediate projections are halfpace shape, and the halfpace of intermediate projections is equipped with interior swollen sealing ring 9 and pressure ring 10, pressure ring
10 compress interior swollen sealing ring 9；The box cupling 5 is connect with steel pipe 6, and the box cupling 5 is inserted into mold core 3, so that in mold core 3
Interior swollen sealing ring 9 is located inside steel pipe 6；By embracing sealing ring 4 outside wide arc gap between the outer ring protrusion and die sleeve 1 of the mold core 3
Connection；Gas vent 12, inlet opening 13 and pre-sealed water hole 14 are provided on the mold core 3.
The working process of the utility model is as follows:
The knot of box cupling 5 is deep into inside test device on the screw thread of steel pipe 6, enters interior swollen sealing ring 9 first
Inside steel pipe 6；Then it is controlled by control system, pre-sealed high pressure water enters from pre-sealed hole 14 to be separately flowed into outside wide arc gap
Sealing ring 4 and interior swollen sealing ring 9 are embraced, is constantly flowed into dampening, sealing ring is embraced outside wide arc gap under the action of pre-sealed high pressure water
Sealing ring 4 holds 5 outer ring of box cupling tightly, and interior swollen sealing ring 9 guarantees that water will not be from sealing place leak close to 6 inner wall of steel pipe；Then examination is allowed
It presses water to enter from inlet opening 13, is full of 5 inner cavity of box cupling, the air of the inside is excluded from gas vent 12；When 5 inner cavity of box cupling is full of water
Afterwards, gas vent 12 is closed, and the constantly water inlet of inlet opening 13 increases the hydraulic pressure of 5 inner cavity of box cupling constantly, and it is laggard to be increased to certain pressure
The closing of water hole 13 is no longer intake, and is detected 5 inner cavity hydraulic pressure of box cupling if hydraulic pressure does not decline within a certain period of time and is illustrated 5 screw thread of box cupling
It is qualified without leakage, if hydraulic pressure declines, it is unqualified to illustrate that nut seal has leakage；After last pressure testing, drainage hole is opened,
Make high pressure water pressure release, then pre-sealed hole 14 is opened, and pre-sealed hydraulic pressure drops to zero, and sealing ring 4 and interior swollen close is embraced outside wide arc gap
The rebound of seal 9 returns to original state, and steel pipe 6 removes.
The utility model is simple and reliable for structure, easy to operate, high-efficient, and green energy conservation is easy to maintain, the utility model energy
Enough to detect to being sealed property of steel tube coupling screw thread, measurement process only carries out the water pressure test to steel tube end part, is not necessarily to steel pipe overall length
The water pressure test.
Embodiment 2:
On the basis of embodiment 1, in the present embodiment, the pre-sealed water hole 14 is sealed with outside wide arc gap armfuls respectively
Circle 4 is connected to interior swollen sealing ring 9.
The inlet opening 13 is connected to the inner cavity lower part that box cupling 5, steel pipe 6 and mold core 3 form.
The gas vent 12 is connected to the inner cavity top that box cupling 5, steel pipe 6 and mold core 3 form.
The second sealing ring 7 is provided between 10 end of pressure ring and mold core 3.
The mold core 3 is equipped with nut 11, and nut 11 is screwed on mold core 3 and against pressure ring 10.
Positioning pin 8 is provided between the die sleeve 1 and mold core 3.
First sealing ring 2 is installed between the maximum outer ring of the mold core 3 and die sleeve 1.
This steel tube coupling thread seal system safety testing device provided by the utility model, including die sleeve 1 are equipped on die sleeve 1
Sealing ring 4 is embraced outside wide arc gap, 4 outer ring of wide arc gap sealing ring deforms radial contraction under the pre-sealed water effect of high pressure；Mold core 3 is installed
On die sleeve 1 and compress and embrace sealing ring 4 outside wide arc gap, the first sealing ring 2 is installed on maximum outer ring on mold core 3, prevent water from
Junction leakage；Gas vent 12, inlet opening 13 and pre-sealed water hole 14 are provided on mold core 3, gas vent 12 is for excluding box cupling 5
Inner cavity air, inlet opening 13 are used for into pressure testing water, and pre-sealed hole 14 is used for into pre-sealed water；Positioning pin 8 is mounted on die sleeve 1 and mould
On core 3, the rotation between mold core 3 and die sleeve 1 is prevented；Interior swollen sealing ring 9 is mounted on mold core 3, in the pre-sealed water effect of high pressure
Lower deformation radial expansion；Pressure ring 10 is mounted on mold core 3 and compresses interior swollen sealing ring 9, and 10 end of pressure ring is equipped with the second sealing ring
7, prevent pre-sealed water from revealing；Nut 11 is screwed on mold core 3 and against pressure ring 10, bears the axial force that sealed ring deformation generates.
The utility model can detect being sealed property of steel tube coupling screw thread, and measurement process only carries out water to steel tube end part
Pressure test, is not necessarily to the water pressure test of steel pipe overall length.The utility model is simple and reliable for structure, easy to operate, high-efficient, green energy conservation,
It is easy to maintain.
Embodiment 3:
A kind of steel tube coupling thread seal test method is provided on the basis of Examples 1 and 2, in the present embodiment,
Specific steps are as follows:
Step 1, by box cupling 5 knot on the screw thread of steel pipe 6, be deep into inside test device, make interior swollen sealing ring 9 into
Enter to inside steel pipe 6；
Step 2 is controlled by control system, and pre-sealed high pressure water enters from pre-sealed hole 14 to be separately flowed into wide arc gap
Sealing ring 4 and interior swollen sealing ring 9 are embraced outside, are constantly flowed into dampening, sealing ring is under the action of pre-sealed high pressure water, outside wide arc gap
It embraces sealing ring 4 and holds 5 outer ring of box cupling tightly, interior swollen sealing ring 9 guarantees that water will not be from sealing place leak close to 6 inner wall of steel pipe；
Step 3, pressure testing water enter from inlet opening 13, are full of 5 inner cavity of box cupling, and the air of the inside is excluded from gas vent 12；
Step 4, after 5 inner cavity of box cupling is full of water, gas vent 12 is closed, and the constantly water inlet of inlet opening 13 makes the water of 5 inner cavity of box cupling
Pressure constantly increases, and the closing of inlet opening 13 is no longer intake after being increased to certain pressure, 5 inner cavity hydraulic pressure of box cupling is detected, if hydraulic pressure exists
Do not decline in certain time, illustrate that 5 screw thread of box cupling is qualified without leakage, if hydraulic pressure declines, illustrates that nut seal has leakage not
It is qualified；
Step 5 after pressure testing, opens drainage hole, makes high pressure water pressure release, and then pre-sealed hole 14 is opened, pre-sealed water
Pressure drops to zero, and sealing ring 4 is embraced outside wide arc gap and the rebound of interior swollen sealing ring 9 returns to original state, steel pipe 6 removes.
Control system in the utility model is existing system, will be no longer described in detail in the utility model.This reality
Being sealed property of steel tube coupling screw thread can be detected with novel, measurement process only carries out the water pressure test to steel tube end part, is not necessarily to
The steel pipe overall length water pressure test.The utility model is simple and reliable for structure, easy to operate, high-efficient, and green energy conservation is easy to maintain.
Exemplified as above is only to the utility model for example, not constituting to the protection scope of the utility model
Limitation, it is all to be belonged within the protection scope of the utility model with the same or similar design of the utility model.The present embodiment
The device feature and its systems approach not described in detail belong to the well-known components and common structure or conventional means of the industry, this
In do not describe one by one.
Claims (8)
1. a kind of steel tube coupling thread seal system safety testing device, it is characterised in that: including die sleeve (1), be equipped with mold core in die sleeve (1)
(3), the mold core (3) is chevron shape, and intermediate projections are higher than outer ring protrusion, and intermediate projections are halfpace shape, intermediate projections
Halfpace is equipped with interior swollen sealing ring (9) and pressure ring (10), and pressure ring (10) compresses interior swollen sealing ring (9)；The box cupling (5) and steel
(6) connection is managed, the box cupling (5) is inserted into mold core (3), so that the interior swollen sealing ring (9) in mold core (3) is located at steel pipe (6)
It is internal；It is connect between the outer ring protrusion of the mold core (3) and die sleeve (1) by embracing sealing ring (4) outside wide arc gap；The mold core
(3) gas vent (12), inlet opening (13) and pre-sealed water hole (14) are provided on.
2. a kind of steel tube coupling thread seal system safety testing device according to claim 1, it is characterised in that: described is pre- close
Water shutoff hole (14) embraces sealing ring (4) with outside wide arc gap respectively and interior swollen sealing ring (9) is connected to.
3. a kind of steel tube coupling thread seal system safety testing device according to claim 1, it is characterised in that: the water inlet
Hole (13) is connected to the inner cavity lower part that box cupling (5), steel pipe (6) and mold core (3) form.
4. a kind of steel tube coupling thread seal system safety testing device according to claim 1, it is characterised in that: the exhaust
Hole (12) is connected to the inner cavity top that box cupling (5), steel pipe (6) and mold core (3) form.
5. a kind of steel tube coupling thread seal system safety testing device according to claim 1, it is characterised in that: the pressure ring
(10) it is provided between end and mold core (3) the second sealing ring (7).
6. a kind of steel tube coupling thread seal system safety testing device according to claim 1, it is characterised in that: the mold core
(3) nut (11) are equipped with, nut (11) is screwed on mold core (3) and against pressure ring (10).
7. a kind of steel tube coupling thread seal system safety testing device according to claim 1, it is characterised in that: the die sleeve
(1) it is provided between mold core (3) positioning pin (8).
8. a kind of steel tube coupling thread seal system safety testing device according to claim 1, it is characterised in that: the mold core
(3) the first sealing ring (2) are installed between maximum outer ring and die sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920154822.3U CN209525069U (en) | 2019-01-29 | 2019-01-29 | A kind of steel tube coupling thread seal system safety testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920154822.3U CN209525069U (en) | 2019-01-29 | 2019-01-29 | A kind of steel tube coupling thread seal system safety testing device |
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| Publication Number | Publication Date |
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| CN209525069U true CN209525069U (en) | 2019-10-22 |
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ID=68230879
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920154822.3U Active CN209525069U (en) | 2019-01-29 | 2019-01-29 | A kind of steel tube coupling thread seal system safety testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580128A (en) * | 2019-01-29 | 2019-04-05 | 中国重型机械研究院股份公司 | A kind of steel tube coupling thread seal system safety testing device and method |
-
2019
- 2019-01-29 CN CN201920154822.3U patent/CN209525069U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580128A (en) * | 2019-01-29 | 2019-04-05 | 中国重型机械研究院股份公司 | A kind of steel tube coupling thread seal system safety testing device and method |
| CN109580128B (en) * | 2019-01-29 | 2024-06-18 | 中国重型机械研究院股份公司 | Device and method for testing tightness of steel pipe coupling thread |
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