CN105987241A - Pressure pipeline joint sealing device - Google Patents
Pressure pipeline joint sealing device Download PDFInfo
- Publication number
- CN105987241A CN105987241A CN201510052273.5A CN201510052273A CN105987241A CN 105987241 A CN105987241 A CN 105987241A CN 201510052273 A CN201510052273 A CN 201510052273A CN 105987241 A CN105987241 A CN 105987241A
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- connecting tube
- sealing device
- fittings body
- joint sealing
- joint
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Abstract
The invention discloses a pressure pipeline joint sealing device, and belongs to the technical field of hydraulic pressure. The pressure pipeline joint sealing device comprises a first connecting pipe, a second connecting pipe and a joint, one end of the first connecting pipe is provided with a step inside, the step surface of the first connecting pipe is conical, one end of the second connecting pipe extends into the first connecting pipe, the conical end of the second connecting pipe is matched with the conical step surface of the first connecting pipe to form surface sealing, and the joint is sleeved with the second connecting pipe and fixedly connected with the second connecting pipe and the first connecting pipe. The joint is connected with the first connecting pipe and the second connecting pipe, and the conical step surface in one end of the first connecting pipe is matched with the conical end of the second connecting pipe, so that the joint can be sealed and sealing effect is good, and the problems that a rubber sealing ring in use cannot seal at the low temperature and sealing is not reliable in threaded connection in the high-pressure environment are solved.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, particularly to a kind of pressure piping joint sealing device.
Background technology
Hydraulic drive utilizes Hydraulic Elements to form required various control loops more organic by some loops
It is combined into drive system to complete the transmission of energy, change and control.Element required in hydraulic drive
Main dynamic element, executive component, control element, auxiliary element etc..Pipeline is that a kind of hydraulic pressure auxiliary is first
Part.
In hydraulic technique, by pressure size, hydraulic system can be divided into low pressure, middle pressure, high pressure and superelevation
Pressure.In low, medium voltage network, the sealing at pipe joint is realized by rubber seal, high pressure or even super
In high-pressure system, the sealing at pipe joint is threaded connection realization.
During realizing the present invention, inventor finds that prior art at least there is problems in that
The normal use temperature of rubber seal is-60 DEG C～300 DEG C, when the medium of conveying in hydraulic system pipeline
During for cryogenic medias such as liquid nitrogen, because the boiling point of cryogenic media is well below-60 DEG C, rubber seal is in this temperature
Expansion rate under environment is 0, it is impossible to realize sealing；And in environment under high pressure, when threaded pretightning force is little
When the pressure of pipeline medium, at pipe joint, it is susceptible to the mutual changing of the relative positions, causes the medium in pipeline to be sent out
Raw leakage, it is unreliable to seal.
Summary of the invention
Sealing function can not be played at low ambient temperatures in order to solve the rubber seal of prior art, and high pressure
The insecure problem of seal with screwed joint in environment, embodiments provides a kind of pressure piping joint close
Seal apparatus.Described technical scheme is as follows:
A kind of pressure piping joint sealing device, described pressure piping joint sealing device include the first connecting tube,
Second connecting tube and joint, be provided with step inside one end of described first connecting tube, described first connecting tube
Step surface is taper, and one end of described second connecting tube is stretched into inside described first connecting tube, and described second even
To stretch into the end, one end described first connecting tube within be taper in adapter, the tapering point of described second connecting tube and
The type conical bench face of described first connecting tube cooperatively forms face seal, and described fitting sleeve is in described second connecting tube
Outside, described joint is fixing with described second connecting tube to be connected, and described joint is solid with described first connecting tube
Fixed connection.
Further, described joint includes that snap ring and fittings body, described snap ring, described fittings body are sequentially sleeved in
Outside described second connecting tube, described snap ring is threaded connection with described second connecting tube, described fittings body
One end withstand on described snap ring, described fittings body is threaded connection with described first connecting tube, and described
Thread rotary orientation on fittings body is contrary with the thread rotary orientation on described snap ring.
Further, described pressure piping joint sealing device also includes locking device, described locking device set
Outside described second connecting tube, and one end of described locking device is fixed with described second connecting tube and is connected,
The other end of described locking device and described fittings body are fixing to be connected, and prevents described the by described locking device
Relative displacement is there is between one connecting tube and described second connecting tube.
Specifically, described locking device is clamp nut, and one end of described clamp nut is enclosed within described second even
Adapter is outside, and described clamp nut is fixing with described second connecting tube to be connected, the other end of described clamp nut
Being enclosed within outside described fittings body, described clamp nut is fixing with described fittings body to be connected.
Further, described pressure piping joint sealing device also includes that hold-down ring, described hold-down ring are enclosed within institute
State outside the second connecting tube, and described hold-down ring is between described clamp nut and described fittings body.
Specifically, described clamp nut and described hold-down ring are made by low temperature resistant stainless steel material.
Specifically, described first connecting tube is tee T, and described second connecting tube is straight tube.
Specifically, described joint is made up of low temperature resistant stainless steel material.
The technical scheme that the embodiment of the present invention provides has the benefit that
The present invention connects the first connecting tube and the second connecting tube by joint, inside first connecting tube one end
Type conical bench face coordinate with the tapering point of the second connecting tube, it is achieved the sealing of joint, sealing effectiveness is preferable,
The problem avoiding realizing sealing under the low temperature environment using rubber seal to cause, and logical under environment under high pressure
Cross the insecure problem of seal with screwed joint.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of pressure piping joint sealing device that the embodiment of the present invention provides.
Wherein:
1 first connecting tube,
2 second connecting tubes,
3 joints, 31 snap rings, 32 fittings bodies,
4 clamp nuts,
5 hold-down rings.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Embodiment is described in further detail.
As it is shown in figure 1, embodiments provide a kind of pressure piping joint sealing device, described pressure
Pipeline joint sealing device includes the first connecting tube the 1, second connecting tube 2 and joint 3, described first connecting tube
Being provided with step inside one end of 1, the step surface of described first connecting tube 1 is taper, described second connecting tube 2
To stretch into described first connecting tube 1 internal in one end, described second connecting tube 2 stretches into described first connecting tube 1
Internal end, one end is taper, the tapering point of described second connecting tube 2 and the cone of described first connecting tube 1
Shape step surface cooperatively forms face seal, and it is outside that described joint 3 is enclosed within described second connecting tube 2, described joint 3
Fix with described second connecting tube 2 and be connected, and described joint 3 is fixed with described first connecting tube 1 and is connected.
The operation principle of the present invention:
The present invention is used for carrying medium-pressure or high pressure system media, processing inside one end of the first connecting tube 1
Step, and step surface is processed as taper, the end, one end that the second connecting tube 2 is connected with the first connecting tube 1 adds
Work is the taper coordinated with step surface, during use, one end that the second connecting tube 2 arranges taper is stretched into first
Connecting tube 1 arranges inside one end of step, makes the second connecting tube 2 compress the first connecting tube 1 by joint 3,
The conical surface making the type conical bench face in the first connecting tube 1 and the second connecting tube 2 end is snuggly mated to together,
Realize sealing.
The present invention connects the first connecting tube 1 and the second connecting tube 2, by the first connecting tube 1 one by joint 3
Type conical bench face within Duan coordinates with the tapering point of the second connecting tube 2, it is achieved the sealing of joint, seals
Effect is preferable, it is to avoid the problem that can not realize under the low temperature environment that use rubber seal causes sealing, and high
The insecure problem of sealing it is threaded connection under pressure ring border.
As it is shown in figure 1, further, described joint 3 includes snap ring 31 and fittings body 32, described snap ring
31, described fittings body 32 is sequentially sleeved in described second connecting tube 2 outside, and described snap ring 31 is with described second
Connecting tube 2 is threaded connection, and one end of described fittings body 32 withstands on described snap ring 31, described joint
Body 32 is threaded connection with described first connecting tube 1, and the thread rotary orientation on described fittings body 32 and institute
State the thread rotary orientation on snap ring 31 contrary.
In the present embodiment, being coordinated with the second connecting tube 2 by snap ring 31, fittings body 32 is enclosed within second even
Adapter 2 is outside, and fittings body 32 coordinates with the first connecting tube 1 and withstands on snap ring 31, snap ring 31 and joint
Thread rotary orientation on body 32 is contrary, during use, first snap ring 31 and the second connecting tube 2 is fixed on one
After Qiing, the head of the second connecting tube 2 is stretched into the first connecting tube 1 to arrange inside one end of step, then by joint
It is outside that body 32 is enclosed within the second connecting tube 2, by turning fittings body 32, and fittings body 32 and the first connecting tube 1
Head on snap ring 31 during cooperation and compress the first connecting tube 1 with the second connecting tube 2, make the first connecting tube
Type conical bench face on 1 closely cooperates with the tapered end face in the second connecting tube 2, it is achieved the sealing of joint,
And contrary because of the thread rotary orientation on fittings body 32 and snap ring 31, it is ensured that snap ring 31 will not twisting with joint 3
Strength and fluff.
As it is shown in figure 1, further, described pressure piping joint sealing device also includes locking device, institute
State locking device and be enclosed within described second connecting tube 2 outside, and one end of described locking device is with described second even
Adapter 2 is fixing to be connected, and the other end of described locking device is fixing with described fittings body to be connected, by described anti-
Pine device prevents from occurring between described first connecting tube 1 and described second connecting tube 2 relative displacement.
In the present embodiment, by connecing locking device in the second connecting tube 2 outer cover, the first connecting tube 1 is prevented
With second there is relative displacement between connecting tube 2, so that it is guaranteed that the type conical bench face in the first connecting tube 1 and
Tapering point in second connecting tube 2 closely cooperates all the time, it is ensured that sealing effectiveness.
As it is shown in figure 1, specifically, described locking device is clamp nut 4, one end of described clamp nut 4
Being enclosed within described second connecting tube 2 outside, described clamp nut 4 is fixing with described second connecting tube 2 to be connected,
It is outside that the other end of described clamp nut 4 is enclosed within described fittings body 32, described clamp nut 4 and described joint
32 fixing connections.
In the present embodiment, clamp nut 4 is the nut with step inner face, by the second connecting tube 2
And fittings body 32 outside socket clamp nut 4, the second connecting tube 2 and fittings body 32 are equipped with external screw thread,
The inner threaded surface that clamp nut 4 internal diameter is less coordinates with the second connecting tube 2, and clamp nut 4 internal diameter is bigger
Inner threaded surface and fittings body 32 coordinate, and during work, tighten clamp nut 4, prevent by clamp nut 4
Relative movement is there is, it is ensured that sealing effectiveness between two connecting tubes 2 and the first connecting tube 1.
Certainly, skilled person will appreciate that, locking device can be also ladder integrated with fittings body 32
Cylinder, ladder cylinder is provided with female thread away from one end inwall of fittings body 32 and the second connecting tube 2 coordinates, structure
Simply, during work, by turning fittings body 32, fittings body 32 is anti-during coordinating with the first connecting tube 1
Female thread and the second connecting tube on pine device coordinate, it is achieved locking functions.Locking device can be also that other can
Simultaneously fixing with fittings body 32 and the second connecting tube 2 be connected and with the structure of the second connecting tube 2 split.
As it is shown in figure 1, further, described pressure piping joint sealing device also includes hold-down ring 5, described
It is outside that hold-down ring 5 is enclosed within described second connecting tube 2, and described hold-down ring 5 be positioned at described clamp nut 41 with
Between described fittings body 32.
In the present embodiment, by arranging hold-down ring between clamp nut 4 and fittings body 32, by compressing
Ring 5 and clamp nut 4 prevent from occurring between the first connecting tube 1 and the second connecting tube 2 relative displacement jointly,
Guarantee sealing effectiveness.
Seeing Fig. 1, specifically, described clamp nut 4 and described hold-down ring 5 are by low temperature resistant stainless steel material
Make.
In the present embodiment, clamp nut 4 and hold-down ring 5 are made up of low temperature rustless steel, such as 304 or 316
Deng, it is ensured that the present invention can be suitably used for low temperature environment,
As it is shown in figure 1, specifically, described first connecting tube 1 is tee T, and described second connecting tube 2 is
Straight tube.
In the present embodiment, the first connecting tube 1 is tee T, and the second connecting tube 2 is straight tube, passes through joint
Connect the second connecting tube 2 and the first connecting tube 1, it is adaptable to various middle pressures or high-pressure system.Certainly, ability
Field technique personnel understand, and the first connecting tube 1 and the second connecting tube 2 can be any Hydraulic Elements needing and connecting,
Such as straight tube, tee T, four-way pipe etc., when the first connecting tube 1 and the second connecting tube 2 are tee T, four-way
During pipe etc., the seam that joint 3 is arranged in the Hydraulic Elements such as tee T, four-way pipe.
Seeing Fig. 1, specifically, described joint 3 is made up of low temperature resistant stainless steel material.
In the present embodiment, snap ring 31, fittings body 32 are made up of low temperature rustless steel so that the present invention is at low temperature
Work under environment problems such as not havinging black brittleness transformation.Certainly, skilled person will appreciate that, when this
When invention need not work at low ambient temperatures, snap ring 31, fittings body 32 also can be made up of ordinary metallic material.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (8)
1. a pressure piping joint sealing device, it is characterised in that described pressure piping joint sealing device
Including the first connecting tube, the second connecting tube and joint, inside one end of described first connecting tube, it is provided with step,
The step surface of described first connecting tube is taper, and described first connecting tube is stretched in one end of described second connecting tube
Inside, it is taper that described second connecting tube stretches into the end, one end within described first connecting tube, described second
The tapering point of connecting tube cooperatively forms face seal, described fitting sleeve with the type conical bench face of described first connecting tube
Outside described second connecting tube, described joint and described second connecting tube are fixing to be connected, and described joint and
Described first connecting tube is fixing to be connected.
Pressure piping joint sealing device the most according to claim 1, it is characterised in that described joint
Including snap ring and fittings body, described snap ring, described fittings body are sequentially sleeved in outside described second connecting tube, institute
Stating snap ring to be threaded connection with described second connecting tube, one end of described fittings body withstands on described snap ring,
Described fittings body is threaded connection with described first connecting tube, and the thread rotary orientation on described fittings body and institute
State the thread rotary orientation on snap ring contrary.
Pressure piping joint sealing device the most according to claim 1, it is characterised in that described pressure
Pipeline joint sealing device also includes that locking device, described locking device are enclosed within outside described second connecting tube,
And one end of described locking device is fixing with described second connecting tube is connected, the other end of described locking device and
Described fittings body is fixing to be connected, and prevents described first connecting tube and described second from connecting by described locking device
Relative displacement is there is between pipe.
Pressure piping joint sealing device the most according to claim 3, it is characterised in that described locking
Device is clamp nut, and one end of described clamp nut is enclosed within outside described second connecting tube, described compression spiral shell
Female and described second connecting tube is fixed and is connected, and the other end of described clamp nut is enclosed within outside described fittings body,
Described clamp nut is fixing with described fittings body to be connected.
Pressure piping joint sealing device the most according to claim 4, it is characterised in that described pressure
Pipeline joint sealing device also includes that hold-down ring, described hold-down ring are enclosed within outside described second connecting tube, and institute
State hold-down ring between described clamp nut and described fittings body.
Pressure piping joint sealing device the most according to claim 5, it is characterised in that described compression
Nut and described hold-down ring are made by low temperature resistant stainless steel material.
Pressure piping joint sealing device the most according to claim 1, it is characterised in that described first
Connecting tube is tee T, and described second connecting tube is straight tube.
8., according to the pressure piping joint sealing device described in claim 1-7 any one claim, it is special
Levying and be, described joint is made up of low temperature resistant stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052273.5A CN105987241B (en) | 2015-01-30 | 2015-01-30 | A kind of pressure piping joint sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052273.5A CN105987241B (en) | 2015-01-30 | 2015-01-30 | A kind of pressure piping joint sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105987241A true CN105987241A (en) | 2016-10-05 |
| CN105987241B CN105987241B (en) | 2018-07-10 |
Family
ID=57035763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510052273.5A Active CN105987241B (en) | 2015-01-30 | 2015-01-30 | A kind of pressure piping joint sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105987241B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657131A (en) * | 2019-10-03 | 2020-01-07 | 江苏军宏机械有限公司 | Oil outlet mechanism of booster oil cylinder |
| CN111236948A (en) * | 2020-01-13 | 2020-06-05 | 中国水利水电第七工程局有限公司 | High-pressure branch pipe excavation method |
| CN112797237A (en) * | 2021-03-10 | 2021-05-14 | 中氢(湖南)氢能装备有限公司 | Anti-vibration and anti-loosening connecting device for high-pressure hydrogen of hydrogenation station |
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| GB2284240A (en) * | 1993-11-27 | 1995-05-31 | Stewart Buchanan Gauges Limite | Connection Assembly |
| CN2446362Y (en) * | 2000-07-27 | 2001-09-05 | 贵州凯撒铝业有限公司 | End sealed sleeving type locking tube joint |
| CN201297461Y (en) * | 2008-11-25 | 2009-08-26 | 荆州恒隆汽车零部件制造有限公司 | Movable joint of pipeline |
| US20100194096A1 (en) * | 2009-02-04 | 2010-08-05 | Robert Bosch Gmbh | High pressure fuel fittings |
| CN202017836U (en) * | 2011-04-19 | 2011-10-26 | 杨伟津 | Stainless steel hard-seal pipe connector |
| CN202972264U (en) * | 2012-12-18 | 2013-06-05 | 郑州人造金刚石及制品工程技术研究中心有限公司 | Combined type anti-loosing pipe joint sealing structure |
| WO2013166666A1 (en) * | 2012-05-09 | 2013-11-14 | Ge Wenyu | Slideway-type locking pipe fitting |
| CN204533897U (en) * | 2015-01-30 | 2015-08-05 | 中国石油天然气集团公司 | A kind of pressure piping joint sealing device |
-
2015
- 2015-01-30 CN CN201510052273.5A patent/CN105987241B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2284240A (en) * | 1993-11-27 | 1995-05-31 | Stewart Buchanan Gauges Limite | Connection Assembly |
| CN2446362Y (en) * | 2000-07-27 | 2001-09-05 | 贵州凯撒铝业有限公司 | End sealed sleeving type locking tube joint |
| CN201297461Y (en) * | 2008-11-25 | 2009-08-26 | 荆州恒隆汽车零部件制造有限公司 | Movable joint of pipeline |
| US20100194096A1 (en) * | 2009-02-04 | 2010-08-05 | Robert Bosch Gmbh | High pressure fuel fittings |
| CN202017836U (en) * | 2011-04-19 | 2011-10-26 | 杨伟津 | Stainless steel hard-seal pipe connector |
| WO2013166666A1 (en) * | 2012-05-09 | 2013-11-14 | Ge Wenyu | Slideway-type locking pipe fitting |
| CN202972264U (en) * | 2012-12-18 | 2013-06-05 | 郑州人造金刚石及制品工程技术研究中心有限公司 | Combined type anti-loosing pipe joint sealing structure |
| CN204533897U (en) * | 2015-01-30 | 2015-08-05 | 中国石油天然气集团公司 | A kind of pressure piping joint sealing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657131A (en) * | 2019-10-03 | 2020-01-07 | 江苏军宏机械有限公司 | Oil outlet mechanism of booster oil cylinder |
| CN111236948A (en) * | 2020-01-13 | 2020-06-05 | 中国水利水电第七工程局有限公司 | High-pressure branch pipe excavation method |
| CN112797237A (en) * | 2021-03-10 | 2021-05-14 | 中氢(湖南)氢能装备有限公司 | Anti-vibration and anti-loosening connecting device for high-pressure hydrogen of hydrogenation station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105987241B (en) | 2018-07-10 |
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