CN208331494U - A kind of high-temperature-resistant high-pressure-resistant seal nipple - Google Patents
A kind of high-temperature-resistant high-pressure-resistant seal nipple Download PDFInfo
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- CN208331494U CN208331494U CN201820864779.5U CN201820864779U CN208331494U CN 208331494 U CN208331494 U CN 208331494U CN 201820864779 U CN201820864779 U CN 201820864779U CN 208331494 U CN208331494 U CN 208331494U
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Abstract
The utility model provides a kind of high-temperature-resistant high-pressure-resistant seal nipple, including a joint body；Two locking nuts, the both ends of the joint body of coaxial isometrical setting and two compression cones, are sealedly connected between joint body and locking nut, and the compression cone and joint body and locking nut are coaxially disposed.The utility model reaches the requirement that seal nipple can use under high temperature and higher pressure while using under meeting normal temperature and pressure conditions by the effect of multiple-sealed barrier.
Description
Technical field
The utility model relates to seal nipple technical fields, and in particular to a kind of sealing for high-temperature-resistant high-pressure-resistant connects
Head.
Background technique
The connection of joint seals, and aerospace, ore machinery, petrochemical industry, wire and cable, automobile and other industries field are all
It relates to, the sealing of junction is presently mainly realized using mechanical and two kinds of approach of welding.The mode of welding mostly uses electricity
The techniques such as weldering, argon arc welding are realized, although the structure for connecting sealing in this way is reliable effectively, to operation technological requirement
It is high, it is easy to cause to leak because of defect；In terms of mechanical connection, it is close that the designer of different field gives different connections
Envelope scheme, but used in the environment or hot environment that high and low temperature frequency becomes, these schemes are nearly all without sealing effect.In electricity
During the installing and using of cable application field, especially mineral insulated cable, providing one kind in industry not yet can be in high temperature
Under environment, the sealed connection scheme of cable insulation (magnesia) moisture absorption is prevented.
Utility model content
The utility model provides a kind of seal nipple used under high temperature and high pressure environment, and this connector is close using taper
Envelope, structure are simple.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of high-temperature-resistant high-pressure-resistant seal nipple, comprising:
One joint body；
Two locking nuts, the both ends of the joint body of coaxial isometrical setting, and
Two compression cones, are sealedly connected between joint body and locking nut, the compression cone and joint body and lock
Tight nut coaxial arrangement.
Further, one end of the compression cone towards joint body is formed with the first chamfering, and compression cone is towards locking screw
Female other end is formed with the second chamfering, and one end of the joint body towards compression cone is formed with the with the cooperation of the first chamfering
One inclined-plane, one end of the locking nut towards compression cone are formed with the second inclined-plane with the cooperation of the second chamfering, and described first tiltedly
The angle in face is greater than the angle of the first chamfering, and the angle on second inclined-plane is greater than the angle of the second chamfering.
Preferably, the angle on first inclined-plane is less than the angle on the second inclined-plane, and the angle of first chamfering is less than
The angle of two chamferings.
Further, described joint body one end is threadedly coupled with locking nut, and the other end is built-in with shallow pitch thread.
Further, the internal diameter of the compression cone is 0.1mm~0.5mm smaller than the internal diameter of joint body and locking nut.
From the above technical scheme, the utility model is meeting normal temperature and pressure item by the effect of multiple-sealed barrier
While use under part, reach the requirement that seal nipple can use under high temperature and higher pressure.
Detailed description of the invention
Fig. 1 is the axial sectional view of the utility model seal nipple, and shows the installation site of pipeline fitting；
Fig. 2 is the usage state diagram of the utility model compression cone.
Specific embodiment
As shown in Figure 1, the high-temperature-resistant high-pressure-resistant seal nipple is locked by a joint body 1, two be coaxially disposed
Nut 2 and two compression cones 3 are constituted, and wherein joint body is identical with the internal diameter of locking nut, are adapted with the outer diameter of pipeline fitting,
Locking nut is arranged at joint body both ends.
The internal diameter of the compression cone 3 can be identical as the internal diameter of joint body 1 and locking nut 2, can also be than connector sheet
Small 0.1mm~the 0.5mm of the internal diameter of body and locking nut, which just set in the design phase, with specific reference to needs
What the pipeline fitting type of connection sealing determined, when pipeline fitting is the fluid line of stainless steel material, compression cone and fluid line
Between gap control in the range of 0.2mm~0.5mm, when pipeline fitting is mineral insulated cable, compression cone and insulated electro
Gap between cable controls in the range of 0.1mm~0.25mm.It is to make to install initial stage, compression cone with difference in internal diameters
There is gap between pipeline fitting, the range of adaptation pipeline fitting size, compression cone initial stage not contacting pipe can be increased in this way
Road part, effective protection seal the joint.
As shown in Fig. 2, one end of compression cone 3 towards the joint body 1 is formed with the first chamfering 31, compression cone direction lock
The other end of tight nut 2 is formed with the second chamfering 32, and one end of joint body 1 towards the compression cone is formed with and the first chamfering
First inclined-plane 11 of cooperation, one end of locking nut 2 towards the compression cone are formed with the second inclined-plane with the cooperation of the second chamfering
21, the angle [alpha] on first inclined-plane is greater than the angle beta of the first chamfering, and the angle δ on second inclined-plane is greater than the angle of the second chamfering
Spend γ.When locking nut reaches tight condition, compression cone is compressed, such joint body and compression cone, locking nut and pressure
Contracting cone is just capable of forming two seals barrier, plays sealing function to junction.
Less than the angle δ on the second inclined-plane, the angle beta of first chamfering falls the angle [alpha] on first inclined-plane less than second
The angle γ at angle.
In the present embodiment, the angle [alpha] on first inclined-plane is 7 °~12 °, the angle δ on second inclined-plane is 32 °~
40 °, the angle beta of first chamfering is 5 °~10 °, and the angle γ of second chamfering is 24 °~30 °.
In the present embodiment, the angle [alpha] on the first inclined-plane is typical but non-limiting to include: 7%, 8%, 9%, 10%, 11%
Or 12%；The angle δ on the second inclined-plane is typical but non-limiting to include: 32%, 33%, 34%, 35%, 36%, 37%,
38%, 39% or 40%；The angle beta of first chamfering is typical but non-limiting to include: 5%, 6%, 7%, 8%, 9% or
10%；The angle γ of second chamfering is typical but non-limiting to include: 24%, 25%, 26%, 27%, 28%, 29% or
30%.
In order to further enhance sealing effect, described 1 one end of joint body is threadedly coupled with locking nut 2, in the other end
It is equipped with shallow pitch thread 12, which is that nonstandard shallow pitch thread is first screwed on pipeline fitting, this thread is stung in connection
It closes on pipeline fitting surface, is capable of forming another road sealing barrier.When connecting the pipeline fitting as mineral insulated cable, connector
The other end of ontology can be not provided with screw thread.
It can be used within the scope of different temperature in order to meet seal nipple, especially be used under high temperature, need to select
Select with pipeline fitting expansion coefficient similar and the excellent material of high temperature resistance, to process each components, usually we are selected a certain
Material of the stainless steel of the trade mark as each components.
Since this seal nipple can play sealing function under high-temperature-resistant high-pressure-resistant, key point is compression cone and connects
It selects in gap between the head angular compliance of ontology, compression cone and the angular compliance and compression cone and sealed pipe fittings of locking nut
It selects.The utility model is further described combined with specific embodiments below, but the protection scope of the utility model is not only limited to
In embodiment.Following table lists each specific embodiment actual parameter and application situation.
Embodiment 1
The opposite side for two fluid lines 4 for first respectively connecting clean locking nut 2, compression cone 3 mounted in needs,
The specification of fluid line 4 is Φ 25.4*2.1mm, and material is also 316L stainless steel.According to the outer diameter size of fluid line 4, determine
Gap between compression cone 3 and fluid line 4 need to control between 0.2mm~0.5mm.
Joint body 1 is screwed in one end of two fluid lines 4 simultaneously with spanner, it is nonstandard shallow in joint body 4 here
Pitch thread can be easy to tighten on fluid line 4, form first of sealing barrier 11.
Push compression cone 2 and locking nut 2 to joint body 1 respectively, and tightened locking nut 2 with spanner, until pressure
Until contracting cone 3 is fully compressed.At this moment other two seals barrier 13 and 23 is formd in joint.
After the completion of connector connection, highly pressurised liquid, and the pressure change inside moment detection pipeline, warp are injected inside pipeline
The pressure in test pipeline after a period of time has no significant change, illustrates seal nipple No leakage.And when the liquid in pipeline
When rising to 200 DEG C, also No leakage situation occurs.
Embodiment 2
First respectively by clean locking nut 2, compression cone 3 mounted in the two mineral insulated cable one end for needing to connect.Here
Mineral insulated cable be a kind of copper core copper sheath, fireproof cable of the magnesia powder as insulating layer, outer diameter is selected as 20.4mm.
According to the outer diameter size of object insulated cable, determine the gap between compression cone 3 and mineral insulated cable need to control 0.10mm~
Between 0.25mm.
Joint body 1 is installed therein a mineral insulated cable one end, is then connected cable core with crimping tool
To together, insulation is carried out to junction.Due to consideration that actual installation is difficult, there is no screw thread inside joint body 1 here, because
This need is sleeved on link position centre.
Push compression cone 2 and locking nut 2 to joint body 1 respectively, and tightened locking nut 2 with spanner, until pressure
Until contracting cone 3 is fully compressed.At this moment two seals barrier 13 and 23 is formd in joint.
Its insulation resistance is measured after the completion of connection, then cable is placed in resistance furnace, connects circuit, by cable
1000 DEG C of degree are continued to be heated to, and keep the temperature 10min, observation light bulb variation.
Cable is quickly taken out after the completion of heating, and sprays 5min with cold water, is measured its insulation resistance and is reconnected circuit,
Observe light bulb variation.It is found by experiment that, light bulb illustrates that joint insulation is good always bright.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this
Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this
The various changes and improvements that the technical solution of utility model is made should all fall into the guarantor that claims of the utility model determine
It protects in range.
Claims (9)
1. a kind of high-temperature-resistant high-pressure-resistant seal nipple characterized by comprising
One joint body；
Two locking nuts, the both ends of the joint body of coaxial isometrical setting, and
Two compression cones, are sealedly connected between joint body and locking nut, the compression cone and joint body and locking screw
Mother's coaxial arrangement.
2. high-temperature-resistant high-pressure-resistant seal nipple according to claim 1, which is characterized in that the compression cone is towards connector sheet
One end of body is formed with the first chamfering, and the other end of compression cone towards locking nut is formed with the second chamfering, the joint body
The first inclined-plane with the cooperation of the first chamfering, one end shape of the locking nut towards compression cone are formed with towards one end of compression cone
Second inclined-plane of the second chamfering of Cheng Youyu cooperation, the angle on first inclined-plane are greater than the angle of the first chamfering, and described second tiltedly
The angle in face is greater than the angle of the second chamfering.
3. high-temperature-resistant high-pressure-resistant seal nipple according to claim 2, which is characterized in that the angle on first inclined-plane is small
Angle in the second inclined-plane, the angle of the angle of first chamfering less than the second chamfering.
4. high-temperature-resistant high-pressure-resistant seal nipple according to claim 2 or 3, which is characterized in that the angle on first inclined-plane
Degree is 7 °~12 °.
5. high-temperature-resistant high-pressure-resistant seal nipple according to claim 2 or 3, which is characterized in that the angle on second inclined-plane
Degree is 32 °~40 °.
6. high-temperature-resistant high-pressure-resistant seal nipple according to claim 2 or 3, which is characterized in that the angle of first chamfering
Degree is 5 °~10 °.
7. high-temperature-resistant high-pressure-resistant seal nipple according to claim 2 or 3, which is characterized in that the angle of second chamfering
Degree is 24 °~30 °.
8. high-temperature-resistant high-pressure-resistant seal nipple according to claim 1-3, which is characterized in that the joint body
One end is threadedly coupled with locking nut, and the other end is built-in with shallow pitch thread.
9. high-temperature-resistant high-pressure-resistant seal nipple according to claim 1-3, which is characterized in that the compression cone
Internal diameter is 0.1mm~0.5mm smaller than the internal diameter of joint body and locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820864779.5U CN208331494U (en) | 2018-06-05 | 2018-06-05 | A kind of high-temperature-resistant high-pressure-resistant seal nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820864779.5U CN208331494U (en) | 2018-06-05 | 2018-06-05 | A kind of high-temperature-resistant high-pressure-resistant seal nipple |
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| Publication Number | Publication Date |
|---|---|
| CN208331494U true CN208331494U (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820864779.5U Active CN208331494U (en) | 2018-06-05 | 2018-06-05 | A kind of high-temperature-resistant high-pressure-resistant seal nipple |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506606A (en) * | 2018-06-05 | 2018-09-07 | 博侃电气（合肥）有限公司 | A kind of high-temperature-resistant high-pressure-resistant seal nipple |
| CN110364976A (en) * | 2019-06-24 | 2019-10-22 | 山东康威通信技术股份有限公司 | A kind of waterproof connector applied to the vertical cable docking of well lid lead-out wire |
-
2018
- 2018-06-05 CN CN201820864779.5U patent/CN208331494U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506606A (en) * | 2018-06-05 | 2018-09-07 | 博侃电气（合肥）有限公司 | A kind of high-temperature-resistant high-pressure-resistant seal nipple |
| CN110364976A (en) * | 2019-06-24 | 2019-10-22 | 山东康威通信技术股份有限公司 | A kind of waterproof connector applied to the vertical cable docking of well lid lead-out wire |
| CN110364976B (en) * | 2019-06-24 | 2021-08-13 | 康威通信技术股份有限公司 | Be applied to water joint of perpendicular cable butt joint of well lid lead-out wire |
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