CN108506606A - 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
- Publication number
- CN108506606A CN108506606A CN201810571569.1A CN201810571569A CN108506606A CN 108506606 A CN108506606 A CN 108506606A CN 201810571569 A CN201810571569 A CN 201810571569A CN 108506606 A CN108506606 A CN 108506606A
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- CN
- China
- Prior art keywords
- resistant
- angle
- pressure
- temperature
- joint body
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Abstract
The present invention 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, which is coaxially disposed with joint body and locking nut.The present invention reaches the requirement that seal nipple can use under high temperature and higher pressure by the effect of multiple-sealed barrier while being used under meeting normal temperature and pressure conditions.
Description
Technical field
The present invention relates to seal nipple technical fields, and in particular to a kind of seal nipple for high-temperature-resistant high-pressure-resistant.
Background technology
The connection of joint seals, and aerospace, ore machinery, petrochemical industry, electric wire, automobile and other industries field are all
It relates to, the sealing of junction is presently mainly realized using machinery 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 become in high and low temperature frequency, 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.
Invention content
The present invention provides a kind of seal nipple used under high temperature and high pressure environment, and this connector uses taper sealing, knot
Structure is simple.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of high-temperature-resistant high-pressure-resistant seal nipple, including：
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 coordinated with the first chamfering
One inclined-plane, one end of the locking nut towards compression cone are formed with the second inclined-plane coordinated with the second chamfering, and described first tiltedly
The angle in face is more than the angle of the first chamfering, and the angle on second inclined-plane is more 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
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 smaller 0.1mm~0.5mm than the internal diameter of joint body and locking nut.
By above technical scheme it is found that the present invention is by the effect of multiple-sealed barrier, in the case where meeting normal temperature and pressure conditions
While use, reach the requirement that seal nipple can use under high temperature and higher pressure.
Description of the drawings
Fig. 1 is the axial sectional view of seal nipple of the present invention, and shows the installation site of pipeline fitting；
Fig. 2 is the usage state diagram of compression cone of the present invention.
Specific implementation mode
As shown in Figure 1, the high-temperature-resistant high-pressure-resistant seal nipple is locked by the joint body 1, two being coaxially disposed
Nut 2 and two compression cones 3 are constituted, and wherein joint body is identical with the internal diameter of locking nut, is 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 sets 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, compression cone and fluid line
Between clearance control in the range of 0.2mm~0.5mm, when pipeline fitting is mineral insulated cable, compression cone and insulated electro
Clearance control between cable is in the range of 0.1mm~0.25mm.It is to make installation starting stage, compression cone with difference in internal diameters
There is gap between pipeline fitting, the range of adaptation pipeline fitting size, compression cone starting stage not contacting pipe can be increased in this way
Road part, at effective protection sealed connection.
As shown in Fig. 2, one end of the compression cone 3 towards 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 the joint body 1 towards compression cone is formed with and the first chamfering
First inclined-plane 11 of cooperation, one end of the locking nut 2 towards compression cone is formed with the second inclined-plane coordinated with the second chamfering
21, the angle [alpha] on first inclined-plane is more than the angle beta of the first chamfering, and the angle δ on second inclined-plane is more 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 can form two seals barrier, and sealing function is played to junction.
The angle [alpha] on first inclined-plane is less than the angle δ on the second inclined-plane, and the angle beta of first chamfering falls 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, 1 one end of the joint body is threadedly coupled with locking nut 2, in the other end
It is equipped with shallow pitch thread 12, which is nonstandard shallow pitch thread, in connection, is first screwed on pipeline fitting, this thread is stung
It closes on pipeline fitting surface, another road sealing barrier can be formed.When connecting the pipeline fitting as mineral insulated cable, connector
The other end of ontology can be not provided with screw thread.
It can use in order to meet seal nipple, especially be used under high temperature within the scope of different temperature, need to select
Select with pipeline fitting expansion coefficient similar and the excellent material of high temperature resistance, to process each parts, usually we select a certain
Material of the stainless steel of the trade mark as each parts.
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.With reference to specific embodiment, the invention will be further described, but protection scope of the present invention is not only limited to 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 steels.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, spanner is used in combination to tighten locking nut 2, 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, 1 inside of joint body here does not have screw thread, because
This need is sleeved on link position centre.
Push compression cone 2 and locking nut 2 to joint body 1 respectively, spanner is used in combination to tighten locking nut 2, 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, is used in combination cold water to spray 5min, measures its insulation resistance and reconnect 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 the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of not departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain of claims of the present invention determination.
Claims (9)
1. a kind of high-temperature-resistant high-pressure-resistant seal nipple, which is characterized in that including：
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 coordinated with 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 chamferings of Cheng Youyu cooperation, the angle on first inclined-plane are more than the angle of the first chamfering, and described second tiltedly
The angle in face is more 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 first chamfering are less than the angle of 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. according to claim 1-3 any one of them high-temperature-resistant high-pressure-resistant seal nipples, 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. according to claim 1-3 any one of them high-temperature-resistant high-pressure-resistant seal nipples, which is characterized in that the compression cone
Internal diameter is smaller 0.1mm~0.5mm than the internal diameter of joint body and locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810571569.1A CN108506606A (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 |
|---|---|---|---|
| CN201810571569.1A CN108506606A (en) | 2018-06-05 | 2018-06-05 | A kind of high-temperature-resistant high-pressure-resistant seal nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108506606A true CN108506606A (en) | 2018-09-07 |
Family
ID=63402936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810571569.1A Pending CN108506606A (en) | 2018-06-05 | 2018-06-05 | A kind of high-temperature-resistant high-pressure-resistant seal nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108506606A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906532A (en) * | 2020-06-22 | 2020-11-10 | 黑龙江建筑职业技术学院 | Assembled heating radiator for heat supply engineering and assembling method thereof |
| CN115201983A (en) * | 2022-08-16 | 2022-10-18 | 浙江大学 | Submarine optical cable splitter capable of being replaced and expanded quickly and used for submarine monitoring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8711735U1 (en) * | 1987-08-29 | 1987-11-05 | Bauer Gmbh, 4055 Niederkruechten, De | |
| CN204254022U (en) * | 2014-11-19 | 2015-04-08 | 四川派威阀门有限公司 | A kind of valve cutting ferrule linkage structure |
| CN205919034U (en) * | 2016-07-21 | 2017-02-01 | 海盐县秦山液压机械厂 | Ferrule type pipe joint |
| CN208331494U (en) * | 2018-06-05 | 2019-01-04 | 博侃电气（合肥）有限公司 | A kind of high-temperature-resistant high-pressure-resistant seal nipple |
-
2018
- 2018-06-05 CN CN201810571569.1A patent/CN108506606A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8711735U1 (en) * | 1987-08-29 | 1987-11-05 | Bauer Gmbh, 4055 Niederkruechten, De | |
| CN204254022U (en) * | 2014-11-19 | 2015-04-08 | 四川派威阀门有限公司 | A kind of valve cutting ferrule linkage structure |
| CN205919034U (en) * | 2016-07-21 | 2017-02-01 | 海盐县秦山液压机械厂 | Ferrule type pipe joint |
| CN208331494U (en) * | 2018-06-05 | 2019-01-04 | 博侃电气（合肥）有限公司 | A kind of high-temperature-resistant high-pressure-resistant seal nipple |
Non-Patent Citations (1)
| Title |
|---|
| 朱觉新 等: "《简明钣金实用手册》", vol. 1, 山西科学技术出版社, pages: 243 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906532A (en) * | 2020-06-22 | 2020-11-10 | 黑龙江建筑职业技术学院 | Assembled heating radiator for heat supply engineering and assembling method thereof |
| CN111906532B (en) * | 2020-06-22 | 2021-11-23 | 黑龙江建筑职业技术学院 | Assembled heating radiator for heat supply engineering and assembling method thereof |
| CN115201983A (en) * | 2022-08-16 | 2022-10-18 | 浙江大学 | Submarine optical cable splitter capable of being replaced and expanded quickly and used for submarine monitoring |
| CN115201983B (en) * | 2022-08-16 | 2023-12-08 | 浙江大学 | Submarine optical cable branching device capable of being replaced and expanded rapidly for submarine monitoring |
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