CN201535741U - Pipeline seal device for pipeline hydrostatic test - Google Patents

Pipeline seal device for pipeline hydrostatic test Download PDF

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Publication number
CN201535741U
CN201535741U CN2009201968279U CN200920196827U CN201535741U CN 201535741 U CN201535741 U CN 201535741U CN 2009201968279 U CN2009201968279 U CN 2009201968279U CN 200920196827 U CN200920196827 U CN 200920196827U CN 201535741 U CN201535741 U CN 201535741U
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CN
China
Prior art keywords
pipeline
base plate
trim ring
seal
base
Prior art date
Application number
CN2009201968279U
Other languages
Chinese (zh)
Inventor
陈文豪
沈淦荣
杨伟芳
史文华
Original Assignee
浙江金洲管道工业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江金洲管道工业有限公司 filed Critical 浙江金洲管道工业有限公司
Priority to CN2009201968279U priority Critical patent/CN201535741U/en
Application granted granted Critical
Publication of CN201535741U publication Critical patent/CN201535741U/en

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Abstract

The utility model relates to a seal device of a hydrostatic test, in particular to a pipeline seal device for a pipeline hydrostatic test. The utility model is realized by the following technical scheme as follows: the pipeline seal device for the pipeline hydrostatic test comprises a bottom plate arranged on the end surface of the base of a hydrostatic testing machine and a seal assembly sealed and fixedly connected with the end surface of the bottom plate. When the seal device is used for conducting a hydrostatic test on each steel pipe, the special hydrostatic testing machine is utilized to pressurize the steel pipes, and the steel pipes are kept at a static state for a period of time under the condition of certain pressure so as to inspect welding quality and eliminate welding residual stress.

Description

A kind of pipeline sealing device that is used for hydraulic test of pipeline

Technical field

The utility model relates to a kind of packoff of the hydraulic testing, particularly a kind of pipeline sealing device that is used for hydraulic test of pipeline.

Background technology

In the steel pipe's production process, need to carry out the hydraulic testing, promptly steel pipe pressurizeed by special hydrostatic testing machine to every steel pipe, and under the certain pressure condition, the static maintenance a period of time, with the check welding quality and eliminate welding residual stress.

Since need be under the certain pressure condition, the static maintenance a period of time, is so require than higher the sealing property of whole test system.The sealing of system comprises: the sealing of water pressure engine body and two aspects of pipe end sealing.The sealing of water pressure engine body is finished by equipment manufacturers, can effectively guarantee; Pipe end sealing needs can both to guarantee the validity that seals in certain caliber deviation, ovality scope.So the end sealing performance is effective, it is the key of hydraulic testing success, but neither one is specific and effective device removes to realize end sealing aspect end sealing at present, adopt most of the time and lip-type packing is placed in pipe end and pipe end pressed the sealing that realizes pipe end in the method for the base end face of water pressure engine, such sealing effectiveness is not fine, under higher hydraulic pressure, be easy to the phenomenon that occurs seeping water, cause and can not carry out the hydraulic testing to pipeline effectively.

The utility model content

The purpose of this utility model provides a kind of simple in structure, easy for installation and can effectively realize the pipeline sealing device that is used for hydraulic test of pipeline of end sealing in hydraulic test of pipeline.

Above-mentioned technical purpose of the present utility model is achieved by the following technical programs: a kind of pipeline sealing device that is used for hydraulic test of pipeline, it comprise the base plate that is arranged at hydrostatic testing machine base end face and with the base plate butt-end packing and the seal assembly of fixedlying connected.

As preferably, described seal assembly comprises and base plate is fixed and the trim ring that is tightly connected, be arranged at the O-ring seal between base plate and the trim ring; Described trim ring is provided with the water inlet pipe that communicates with O-ring seal and reaches and the gas outlet that can communicate with inner cavity of pipe.When pipeline is placed on the trim ring, water under high pressure is flowed into O-ring seal, the O-ring seal expansion of thereupon expanding, because O-ring seal is between base plate and trim ring, O-ring seal expands when enlarging, the sidewall of O-ring seal is pressed on base plate and trim ring respective side walls, and the top of O-ring seal presses in inner-walls of duct, thus in hydraulic test of pipeline, realize pipeline radially with axial sealing; When carrying out the hydraulic testing, for guaranteeing the quality of the hydraulic testing, air in the pipeline need be got rid of clean, therefore in trim ring, be provided with a gas outlet that communicates with inner cavity of pipe, in pipeline, inject in the water under high pressure, also the air of pipeline is discharged from gas outlet simultaneously, in pipeline, be full of water, after just air drains in the pipeline, just gas outlet is blocked.

As further preferred, the inner chamber of described O-ring seal is the U-shaped groove; Described trim ring is provided with the water inlet guide groove that matches with the U-shaped groove.The U-shaped groove is embedded in into water guide groove both sides, and water under high pressure injects the U-shaped groove from the water inlet guide groove.

As further preferred, have the circular groove concentric on the described base plate with base plate, described trim ring is embedded in the circular groove, and the inwall that trim ring is positioned at the part outer wall of circular groove and circular groove fits and trim ring and base plate are bolted to connection.

As further preferred, the junction of described trim ring and base plate is provided with first hermetically-sealed construction, and described first hermetically-sealed construction comprises to be located on trim ring and the end face that base plate is connected and with concentric first annular recess of described circular groove and be embedded in O shape circle in the annular recess.The one O shape circle is expanded material or elastomeric material, is embedded in the sealing that realizes in first annular recess between trim ring and base plate.

As preferably, the junction of described base plate and base is provided with second hermetically-sealed construction, and described second hermetically-sealed construction comprises to be located on base plate and the end face that base is connected and with concentric second annular recess of described base plate, base surface of contact and be embedded in the 2nd O shape circle in second annular recess.The 2nd O shape circle is expanded material or elastomeric material, is embedded in the sealing that realizes in second annular recess between base and base plate.

As further preferred, the front end of described trim ring is provided with the chamfering with guide effect.The setting of chamfering is material loading, the centering of pipeline for convenience.

As preferably, be provided with near base plate and be used for the receiving hole of fixedlying connected with base.

In sum, the utlity model has following beneficial effect:

1, because the setting of seal assembly when carrying out hydraulic test of pipeline, has realized the sealing of pipe end effectively;

2,, realized between trim ring and the base plate effectively, the sealing between base plate and the base because the setting of O shape circle and the 2nd O shape circle;

3, since the setting of the chamfering of trim ring front end make when implementing the hydraulic testing, make things convenient for material loading, the centering of pipeline;

4, the utility model is simple in structure, changes O-ring seal as need, only need pull down trim ring and can change;

5, because the inner chamber of O-ring seal is the setting of water inlet guide groove on U-shaped groove and the trim ring, make that the serviceable life of O-ring seal is longer.

Description of drawings

Fig. 1 is the utility model perspective view;

Among the figure, 11, hydraulic testing machine base, 12, water inlet in the pipe, 21, base plate, 22, receiving hole, 23, the high pressure intake, 24, gas outlet, the 25, the 2nd O shape circle, the 26, the one O shape circle, 27, trim ring, 28, O-ring seal, 29, bolt, 3, pipeline.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

This specific embodiment only is to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this instructions, but as long as all are subjected to the protection of Patent Law in claim scope of the present utility model.

A kind of pipeline sealing device that is used for hydraulic test of pipeline, as shown in Figure 1, it comprise the base plate 21 that is arranged at hydraulic testing machine base 11 end faces and with base plate 21 butt-end packings and the seal assembly of fixedlying connected.The trim ring 27 that seal assembly comprises and base plate 21 is fixing and be tightly connected, be arranged at the O-ring seal 28 between base plate 21 and the trim ring 27; O-ring seal 28 is an elastomeric material; Have the circular groove concentric with base plate 21 on the base plate 21, described trim ring 27 is embedded in the circular groove, and the inwall that trim ring 27 is positioned at the part outer wall of circular groove and circular groove fits and trim ring 27 is fastenedly connected by bolt 29 with base plate 21; Trim ring 27 is provided with first hermetically-sealed construction with the junction of base plate 21, and first hermetically-sealed construction comprises to be located on trim ring 27 and the end face that base plate 21 is connected and with concentric first annular recess of described circular groove and be embedded in that an O shape encloses 26 in the annular recess; The one O shape circle 26 is expanded material or elastomeric material, is embedded in the sealing that is used to realize 21 of trim ring 27 and base plates in first annular recess.

Trim ring 27 is provided with the high-pressure intake pipe 23 that communicates with O-ring seal 28 and reaches and the gas outlet 24 that can communicate with pipeline 3 inner chambers.Be provided with the water inlet guide groove (not shown) of projection on trim ring 27, the inner chamber of O-ring seal 28 takes the shape of the letter U and is placed in into water guide groove both sides, and the water inlet guide groove communicates with the inner chamber of O-ring seal 28.

Base plate 21 is provided with hermetically-sealed construction with the junction of base 11, and described hermetically-sealed construction comprises to be located on base plate 21 and the end face that base 11 is connected and to enclose 25 with concentric second annular recess of described base plate 21, base 11 surface of contact and the 2nd O shape that is embedded in second annular recess.The 2nd O shape circle 25 be expanded material or elastomeric material, is embedded in the sealing of 21 of realization bases 11 and base plate in second annular recess.

The front end of trim ring 27 is provided with the chamfering with guide effect.The setting of chamfering is material loading, the centering of pipeline 3 for convenience.Base plate 21 is provided with and is used for the receiving hole 22 of fixedlying connected with base 11.

Chamfering according to trim ring 27, pipeline 3 is placed on the trim ring 27, by high pressure intake 23, water under high pressure is injected the O-ring seal 28 that inner chamber takes the shape of the letter U by the water inlet guide groove, the inner chamber of O-ring seal 28 is arranged to the serviceable life that helps improve O-ring seal 28 that is provided with of U-shaped and water inlet guide groove, expand behind the injection water under high pressure in the O-ring seal 28 thereupon and enlarge, because O-ring seal 28 is between base plate 21 and trim ring 27, the sidewall of O-ring seal 28 is pressed on base plate 21 and trim ring 27 respective side walls, and press in pipeline 3 inwalls on the top of O-ring seal 28, thus in pipeline 3 hydraulic testings, realize pipeline 3 radially with axial sealing; When carrying out the hydraulic testing, for guaranteeing the quality of the hydraulic testing, air in the pipeline 3 need be got rid of clean, therefore in trim ring 27, be provided with a gas outlet 24 that communicates with pipeline 3 inner chambers, pipeline 3 is realized radially with axial sealing after, water inlet 12 injects water under high pressure (water inlet 12 and high pressure intake 23 can be adopted with the power water source in the pipe to pipeline 3 inner chambers in manage, but in order to realize effective end sealing, the hydraulic pressure of 23 water that inject should be higher than from the hydraulic pressure of the water of managing interior water inlet 12 injections from the high pressure intake), also the air of pipeline 3 is discharged from gas outlet 24 simultaneously, in pipeline 3, be full of water under high pressure, after just air drains in the pipeline 3,, thereby make pipeline 3 under totally enclosed state with gas outlet 24 sealings, in pipeline 3, fill with water under high pressure, can carry out the hydraulic testing to pipeline 3 effectively.

Claims (8)

1. pipeline sealing device that is used for hydraulic test of pipeline is characterized in that: it comprise the base plate that is arranged at hydrostatic testing machine base end face and with the base plate butt-end packing and the seal assembly of fixedlying connected.
2. a kind of pipeline sealing device that is used for hydraulic test of pipeline according to claim 1 is characterized in that: described seal assembly comprises and base plate is fixed and the trim ring that is tightly connected, be arranged at the O-ring seal between base plate and the trim ring; Described trim ring is provided with the water inlet pipe that communicates with O-ring seal and reaches and the gas outlet that can communicate with inner cavity of pipe.
3. a kind of pipeline sealing device that is used for hydraulic test of pipeline according to claim 2 is characterized in that: the inner chamber of described O-ring seal is the U-shaped groove; Described trim ring is provided with the water inlet guide groove that matches with the U-shaped groove.
4. a kind of pipeline sealing device that is used for hydraulic test of pipeline according to claim 2, it is characterized in that: have the circular groove concentric on the described base plate with base plate, described trim ring is embedded in the circular groove, and the inwall that trim ring is positioned at the part outer wall of circular groove and circular groove fits and trim ring and base plate are bolted to connection.
5. a kind of pipeline sealing device that is used for hydraulic test of pipeline according to claim 4, it is characterized in that: the junction of described trim ring and base plate is provided with first hermetically-sealed construction, and described first hermetically-sealed construction comprises to be located on trim ring and the end face that base plate is connected and with concentric first annular recess of described circular groove and be embedded in O shape circle in first annular recess.
6. a kind of pipeline sealing device that is used for hydraulic test of pipeline according to claim 1, it is characterized in that: the junction of described base plate and base is provided with second hermetically-sealed construction, and described second hermetically-sealed construction comprises to be located on base plate and the end face that base is connected and with concentric second annular recess of described base plate, base surface of contact and be embedded in the 2nd O shape circle in second annular recess.
7. a kind of pipeline sealing device that is used for hydraulic test of pipeline according to claim 2, it is characterized in that: the front end of described trim ring is provided with the chamfering with guide effect.
8. a kind of pipeline sealing device that is used for hydraulic test of pipeline according to claim 1 is characterized in that: be provided with near base plate and be used for the receiving hole of fixedlying connected with base.
CN2009201968279U 2009-09-20 2009-09-20 Pipeline seal device for pipeline hydrostatic test CN201535741U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201968279U CN201535741U (en) 2009-09-20 2009-09-20 Pipeline seal device for pipeline hydrostatic test

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201968279U CN201535741U (en) 2009-09-20 2009-09-20 Pipeline seal device for pipeline hydrostatic test

Publications (1)

Publication Number Publication Date
CN201535741U true CN201535741U (en) 2010-07-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201968279U CN201535741U (en) 2009-09-20 2009-09-20 Pipeline seal device for pipeline hydrostatic test

Country Status (1)

Country Link
CN (1) CN201535741U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101672719B (en) * 2009-09-20 2011-04-27 浙江金洲管道工业有限公司 Pipeline sealing device used for hydraulic test of pipeline
CN102374290A (en) * 2011-10-18 2012-03-14 东方电气(广州)重型机器有限公司 Large-nozzle detachable hydraulic sealing device
CN103207051A (en) * 2012-01-12 2013-07-17 珠海格力电器股份有限公司 Sealing device, system and method for detection of gas tightness of pipeline
CN103574214A (en) * 2012-07-26 2014-02-12 福建亚通新材料科技股份有限公司 Hydraulic pressure test device for plastic water supply pipe fitting
CN105675386A (en) * 2016-03-09 2016-06-15 南通永大管业股份有限公司 Sealed pressurizing device for hydraulic press

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101672719B (en) * 2009-09-20 2011-04-27 浙江金洲管道工业有限公司 Pipeline sealing device used for hydraulic test of pipeline
CN102374290A (en) * 2011-10-18 2012-03-14 东方电气(广州)重型机器有限公司 Large-nozzle detachable hydraulic sealing device
CN102374290B (en) * 2011-10-18 2014-01-01 东方电气(广州)重型机器有限公司 Large-nozzle detachable hydraulic sealing device
CN103207051A (en) * 2012-01-12 2013-07-17 珠海格力电器股份有限公司 Sealing device, system and method for detection of gas tightness of pipeline
CN103207051B (en) * 2012-01-12 2015-12-02 珠海格力电器股份有限公司 Pipeline air-leakage test packoff, pipeline air tightness detection system and method
CN103574214A (en) * 2012-07-26 2014-02-12 福建亚通新材料科技股份有限公司 Hydraulic pressure test device for plastic water supply pipe fitting
CN105675386A (en) * 2016-03-09 2016-06-15 南通永大管业股份有限公司 Sealed pressurizing device for hydraulic press

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20100728

Effective date of abandoning: 20090920