CN204533897U - A kind of pressure piping joint sealing device - Google Patents
A kind of pressure piping joint sealing device Download PDFInfo
- Publication number
- CN204533897U CN204533897U CN201520070504.0U CN201520070504U CN204533897U CN 204533897 U CN204533897 U CN 204533897U CN 201520070504 U CN201520070504 U CN 201520070504U CN 204533897 U CN204533897 U CN 204533897U
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- Prior art keywords
- connecting tube
- sealing device
- pressure piping
- fittings body
- joint sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 210000004907 gland Anatomy 0.000 claims description 31
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of pressure piping joint sealing device, belong to technical field of hydraulic pressure.Described pressure piping joint sealing device comprises the first connecting tube, the second connecting tube and joint, the inside, one end of the first connecting tube is provided with step, the step surface of the first connecting tube is taper, the first connecting tube inside is stretched in one end of second connecting tube, the tapered end of the second connecting tube coordinates forming surface to seal with the type conical bench face of the first connecting tube, joints sleeve is outside at the second connecting tube, and joint is fixedly connected with the second connecting tube, and joint is fixedly connected with the first connecting tube.The utility model connects the first connecting tube and the second connecting tube by joint, coordinated with the tapered end of the second connecting tube by the type conical bench face of the first inside, connecting tube one end, realize the sealing of joint, sealing effect is better, the problem sealed can not be realized under avoiding the low temperature environment using rubber seal to cause, and under hyperbaric environment, be threaded connection the insecure problem of sealing.
Description
Technical field
The utility model relates to technical field of hydraulic pressure, particularly a kind of pressure piping joint sealing device.
Background technique
Hydraulic transmission utilizes hydraulic element to form required various control loops, then becomes transmission system to complete the transmission of energy, conversion and control by some loops organic assembling.Element required in hydraulic transmission mainly contains dynamical element, executive component, control unit, auxiliary element etc.Pipeline is a kind of hydraulic pressure auxiliary element.
In hydraulics, pressing force size, can be divided into low pressure, middle pressure, high pressure and ultrahigh pressure by hydraulic system.In low, medium voltage network, the sealing at pipe joint place is realized by rubber seal, and in high pressure and even extra high voltage system, the sealing at pipe joint place is threaded connection realization.
Realizing in process of the present utility model, inventor finds that prior art at least exists following problem:
The normal serviceability temperature of rubber seal is-60 DEG C ~ 300 DEG C, when the medium carried in hydraulic system pipeline is the cryogenic medias such as liquid nitrogen, because the boiling point of cryogenic media is well below-60 DEG C, the expansivity of rubber seal under this temperature environment is 0, can not realize sealing; And in hyperbaric environment, when the pretightening force be threaded is less than the pressure of pipeline medium, the mutual changing of the relative positions easily occurs at pipe joint place, cause the medium in pipeline to be revealed, it is unreliable to seal.
Model utility content
In order to the rubber seal solving prior art can not play seal action at low ambient temperatures, and the insecure problem of seal with screwed joint in hyperbaric environment, the utility model embodiment provides a kind of pressure piping joint sealing device.Described technological scheme is as follows:
A kind of pressure piping joint sealing device, described pressure piping joint sealing device comprises the first connecting tube, second connecting tube and joint, the inside, one end of described first connecting tube is provided with step, the step surface of described first connecting tube is taper, described first connecting tube inside is stretched in one end of described second connecting tube, the end, one end that described second connecting tube stretches into described first connecting tube inside is taper, the tapered end of described second connecting tube coordinates forming surface to seal with the type conical bench face of described first connecting tube, described joints sleeve is outside at described second connecting tube, described joint is fixedly connected with described second connecting tube, and described joint is fixedly connected with described first connecting tube.
Further, described joint comprises snap ring and fittings body, it is outside that described snap ring, described fittings body are enclosed within described second connecting tube successively, described snap ring and described second connecting tube are threaded connection, one end of described fittings body withstands on described snap ring, described fittings body and described first connecting tube are threaded connection, and thread rotary orientation on described fittings body is contrary with the thread rotary orientation on described snap ring.
Further, described pressure piping joint sealing device also comprises locking device, it is outside that described locking device is enclosed within described second connecting tube, and one end of described locking device is fixedly connected with described second connecting tube, the other end of described locking device is fixedly connected with described fittings body, prevents from, between described first connecting tube and described second connecting tube, relative displacement occurs by described locking device.
Particularly, described locking device is gland nut, one end of described gland nut is enclosed within described second connecting tube outside, described gland nut is fixedly connected with described second connecting tube, the other end of described gland nut is enclosed within described fittings body outside, and described gland nut is fixedly connected with described fittings body.
Further, described pressure piping joint sealing device also comprises hold-down ring, and it is outside that described hold-down ring is enclosed within described second connecting tube, and described hold-down ring is between described gland nut and described fittings body.
Particularly, described gland nut and described hold-down ring are made by low temperature resistant stainless steel material.
Particularly, described first connecting tube is three-way pipe, and described second connecting tube is straight tube.
Particularly, described joint is made up of low temperature resistant stainless steel material.
The beneficial effect that the technological scheme that the utility model embodiment provides is brought is:
The utility model connects the first connecting tube and the second connecting tube by joint, coordinated with the tapered end of the second connecting tube by the type conical bench face of the first inside, connecting tube one end, realize the sealing of joint, sealing effect is better, the problem sealed can not be realized under avoiding the low temperature environment using rubber seal to cause, and under hyperbaric environment, be threaded connection the insecure problem of sealing.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite 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 utility model embodiment provides.
Wherein:
1 first connecting tube,
2 second connecting tubes,
3 joints, 31 snap rings, 32 fittings bodies,
4 gland nuts,
5 hold-down rings.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model mode of execution is described in further detail.
As shown in Figure 1, the utility model embodiment provides a kind of pressure piping joint sealing device, described pressure piping joint sealing device comprises the first connecting tube 1, second connecting tube 2 and joint 3, the inside, one end of described first connecting tube 1 is provided with step, the step surface of described first connecting tube 1 is taper, described first connecting tube 1 inside is stretched in one end of described second connecting tube 2, the end, one end that described second connecting tube 2 stretches into described first connecting tube 1 inside is taper, the tapered end of described second connecting tube 2 coordinates forming surface to seal with the type conical bench face of described first connecting tube 1, it is outside that described joint 3 is enclosed within described second connecting tube 2, described joint 3 is fixedly connected with described second connecting tube 2, and described joint 3 is fixedly connected with described first connecting tube 1.
Working principle of the present utility model:
The utility model is for carrying medium-pressure or high pressure system media, at the step of inside, one end of the first connecting tube 1 processing, and step surface is processed as taper, the end, one end that second connecting tube 2 is connected with the first connecting tube 1 is processed as the taper coordinated with step surface, during use, the inside, one end that the first connecting tube 1 arranges step is stretched in the one end second connecting tube 2 being arranged taper, the second connecting tube 2 is made to compress the first connecting tube 1 by joint 3, make together with the type conical bench face on the first connecting tube 1 closely cooperates with the conical surface of the second connecting tube 2 end, to realize sealing.
The utility model connects the first connecting tube 1 and the second connecting tube 2 by joint 3, coordinated with the tapered end of the second connecting tube 2 by the type conical bench face of the first inside, connecting tube 1 one end, realize the sealing of joint, sealing effect is better, the problem sealed can not be realized under avoiding the low temperature environment using rubber seal to cause, and under hyperbaric environment, be threaded connection the insecure problem of sealing.
As shown in Figure 1, further, described joint 3 comprises snap ring 31 and fittings body 32, it is outside that described snap ring 31, described fittings body 32 are enclosed within described second connecting tube 2 successively, described snap ring 31 is threaded connection with described second connecting tube 2, one end of described fittings body 32 withstands on described snap ring 31, and described fittings body 32 and described first connecting tube 1 are threaded connection, and thread rotary orientation on described fittings body 32 is contrary with the thread rotary orientation on described snap ring 31.
In the present embodiment, coordinated with the second connecting tube 2 by snap ring 31, it is outside that fittings body 32 is enclosed within the second connecting tube 2, fittings body 32 coordinates with the first connecting tube 1 and withstands on snap ring 31, thread rotary orientation on snap ring 31 and fittings body 32 is contrary, in using process, after first snap ring 31 and the second connecting tube 2 being fixed together, the head of the second connecting tube 2 is stretched into the inside, one end that the first connecting tube 1 arranges step, again fittings body 32 is enclosed within the second connecting tube 2 outside, by turning fittings body 32, head on snap ring 31 in the process that fittings body 32 coordinates with the first connecting tube 1 and compress the first connecting tube 1 with the second connecting tube 2, tapered end face on type conical bench face on first connecting tube 1 and the second connecting tube 2 is closely cooperated, realize the sealing of joint, and it is contrary because of the thread rotary orientation on fittings body 32 and snap ring 31, guarantee that snap ring 31 can not fluff with the stubborn strength of joint 3.
As shown in Figure 1, further, described pressure piping joint sealing device also comprises locking device, it is outside that described locking device is enclosed within described second connecting tube 2, and one end of described locking device is fixedly connected with described second connecting tube 2, the other end of described locking device is fixedly connected with described fittings body, prevents from, between described first connecting tube 1 and described second connecting tube 2, relative displacement occurs by described locking device.
In the present embodiment, by connecing locking device in the second connecting tube 2 outer cover, prevent from, between the first connecting tube 1 and the second connecting tube 2, relative displacement occurs, thus guarantee that the type conical bench face on the first connecting tube 1 and the tapered end on the second connecting tube 2 closely cooperate all the time, guarantee sealing effect.
As shown in Figure 1, particularly, described locking device is gland nut 4, one end of described gland nut 4 is enclosed within described second connecting tube 2 outside, described gland nut 4 is fixedly connected with described second connecting tube 2, the other end of described gland nut 4 is enclosed within described fittings body 32 outside, and described gland nut 4 is fixedly connected with described joint 32.
In the present embodiment, gland nut 4 is for having the nut of step inner face, by being socketed gland nut 4 at the second connecting tube 2 and fittings body 32 outside, second connecting tube 2 and fittings body 32 are equipped with outside thread, the inner threaded surface that gland nut 4 internal diameter is less coordinates with the second connecting tube 2, the inner threaded surface that gland nut 4 internal diameter is larger and fittings body 32 coordinate, during work, tighten gland nut 4, prevent from, between the second connecting tube 2 and the first connecting tube 1, relative movement occurs by gland nut 4, guarantee sealing effect.
Certainly, those skilled in the art are known, locking device also can be the integrated ladder cylinder with fittings body 32, ladder cylinder is provided with internal thread away from one end inwall of fittings body 32 and the second connecting tube 2 coordinates, structure is simple, during work, by turning fittings body 32, internal thread in the process that fittings body 32 coordinates with the first connecting tube 1 on locking device coordinates with the second connecting tube, realizes locking functions.Locking device also can be other can be fixedly connected with fittings body 32 and the second connecting tube 2 simultaneously and with the structure of the second connecting tube 2 split.
As shown in Figure 1, further, described pressure piping joint sealing device also comprises hold-down ring 5, and it is outside that described hold-down ring 5 is enclosed within described second connecting tube 2, and described hold-down ring 5 is between described gland nut 41 and described fittings body 32.
In the present embodiment, by arranging hold-down ring between gland nut 4 and fittings body 32, jointly preventing from, between the first connecting tube 1 and the second connecting tube 2, relative displacement occurs by hold-down ring 5 and gland nut 4, guaranteeing sealing effect.
See Fig. 1, particularly, described gland nut 4 and described hold-down ring 5 are made by low temperature resistant stainless steel material.
In the present embodiment, gland nut 4 and hold-down ring 5 are made up of low temperature stainless steel, as 304 or 316 etc., guarantee that the utility model can be applicable to low temperature environment,
As shown in Figure 1, particularly, described first connecting tube 1 is three-way pipe, and described second connecting tube 2 is straight tube.
In the present embodiment, the first connecting tube 1 is three-way pipe, and the second connecting tube 2 is straight tube, connects the second connecting tube 2 and the first connecting tube 1, be applicable to various middle pressure or high-pressure system by joint.Certainly, those skilled in the art are known, first connecting tube 1 and the second connecting tube 2 can be the hydraulic element that any needs are connected, as straight tube, three-way pipe, four-way pipe etc., when the first connecting tube 1 and the second connecting tube 2 are three-way pipe, four-way pipe etc., joint 3 is arranged on a jointing in the hydraulic element such as three-way pipe, four-way pipe.
See Fig. 1, particularly, 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 stainless steel, and the utility model is worked problems such as there will not be low temperature brittleness transformation at low ambient temperatures.Certainly, those skilled in the art are known, and when the utility model does not need to work at low ambient temperatures, snap ring 31, fittings body 32 also can be made up of ordinary metallic material.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a pressure piping joint sealing device, it is characterized in that, described pressure piping joint sealing device comprises the first connecting tube, second connecting tube and joint, the inside, one end of described first connecting tube is provided with step, the step surface of described first connecting tube is taper, described first connecting tube inside is stretched in one end of described second connecting tube, the end, one end that described second connecting tube stretches into described first connecting tube inside is taper, the tapered end of described second connecting tube coordinates forming surface to seal with the type conical bench face of described first connecting tube, described joints sleeve is outside at described second connecting tube, described joint is fixedly connected with described second connecting tube, and described joint is fixedly connected with described first connecting tube.
2. pressure piping joint sealing device according to claim 1, it is characterized in that, described joint comprises snap ring and fittings body, it is outside that described snap ring, described fittings body are enclosed within described second connecting tube successively, described snap ring and described second connecting tube are threaded connection, one end of described fittings body withstands on described snap ring, and described fittings body and described first connecting tube are threaded connection, and thread rotary orientation on described fittings body is contrary with the thread rotary orientation on described snap ring.
3. pressure piping joint sealing device according to claim 1, it is characterized in that, described pressure piping joint sealing device also comprises locking device, it is outside that described locking device is enclosed within described second connecting tube, and one end of described locking device is fixedly connected with described second connecting tube, the other end of described locking device is fixedly connected with described fittings body, prevents from, between described first connecting tube and described second connecting tube, relative displacement occurs by described locking device.
4. pressure piping joint sealing device according to claim 3, it is characterized in that, described locking device is gland nut, one end of described gland nut is enclosed within described second connecting tube outside, described gland nut is fixedly connected with described second connecting tube, the other end of described gland nut is enclosed within described fittings body outside, and described gland nut is fixedly connected with described fittings body.
5. pressure piping joint sealing device according to claim 4, it is characterized in that, described pressure piping joint sealing device also comprises hold-down ring, and it is outside that described hold-down ring is enclosed within described second connecting tube, and described hold-down ring is between described gland nut and described fittings body.
6. pressure piping joint sealing device according to claim 5, is characterized in that, described gland nut and described hold-down ring are made by low temperature resistant stainless steel material.
7. pressure piping joint sealing device according to claim 1, is characterized in that, described first connecting tube is three-way pipe, and described second connecting tube is straight tube.
8. the pressure piping joint sealing device according to any one of claim 1-7 claim, is characterized in that, described joint is made up of low temperature resistant stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520070504.0U CN204533897U (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 |
|---|---|---|---|
| CN201520070504.0U CN204533897U (en) | 2015-01-30 | 2015-01-30 | A kind of pressure piping joint sealing device |
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| Publication Number | Publication Date |
|---|---|
| CN204533897U true CN204533897U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520070504.0U Expired - Fee Related CN204533897U (en) | 2015-01-30 | 2015-01-30 | A kind of pressure piping joint sealing device |
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| Country | Link |
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| CN (1) | CN204533897U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333247A (en) * | 2015-11-06 | 2016-02-17 | 安东检测有限公司 | Sealing connector, connecting pipe and pipeline |
| CN105987241A (en) * | 2015-01-30 | 2016-10-05 | 中国石油天然气集团公司 | Pressure pipeline joint sealing device |
| CN108980149A (en) * | 2018-09-25 | 2018-12-11 | 芜湖新兴铸管有限责任公司 | Stablize and shunts cast tube gear group device hydraulic system |
| CN109058204A (en) * | 2018-09-25 | 2018-12-21 | 芜湖新兴铸管有限责任公司 | Cast tube gear dials device Hydraulic System device |
| CN109185247A (en) * | 2018-09-25 | 2019-01-11 | 芜湖新兴铸管有限责任公司 | Antidetonation shunts cast tube gear and dials device hydraulic system |
-
2015
- 2015-01-30 CN CN201520070504.0U patent/CN204533897U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987241A (en) * | 2015-01-30 | 2016-10-05 | 中国石油天然气集团公司 | Pressure pipeline joint sealing device |
| CN105987241B (en) * | 2015-01-30 | 2018-07-10 | 中国石油天然气集团公司 | A kind of pressure piping joint sealing device |
| CN105333247A (en) * | 2015-11-06 | 2016-02-17 | 安东检测有限公司 | Sealing connector, connecting pipe and pipeline |
| CN108980149A (en) * | 2018-09-25 | 2018-12-11 | 芜湖新兴铸管有限责任公司 | Stablize and shunts cast tube gear group device hydraulic system |
| CN109058204A (en) * | 2018-09-25 | 2018-12-21 | 芜湖新兴铸管有限责任公司 | Cast tube gear dials device Hydraulic System device |
| CN109185247A (en) * | 2018-09-25 | 2019-01-11 | 芜湖新兴铸管有限责任公司 | Antidetonation shunts cast tube gear and dials device hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 |