CN107706880A - A kind of cryocable outlet joint - Google Patents
A kind of cryocable outlet joint Download PDFInfo
- Publication number
- CN107706880A CN107706880A CN201711189900.5A CN201711189900A CN107706880A CN 107706880 A CN107706880 A CN 107706880A CN 201711189900 A CN201711189900 A CN 201711189900A CN 107706880 A CN107706880 A CN 107706880A
- Authority
- CN
- China
- Prior art keywords
- seal
- pressure side
- side flange
- cryocable
- wiring hole
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 4
- 239000011521 glass Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- 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
- H02G15/34—Cable fittings for cryogenic cables
Landscapes
- Gasket Seals (AREA)
Abstract
A kind of cryocable outlet joint, it is characterized in that, including flange assembly, the flange assembly includes normal pressure side flange and pressure side flange, the normal pressure side flange is fixedly connected with the pressure side flange seal, pressure chamber is provided with the inside of the normal pressure side flange, nitrogen is packaged with the pressure chamber, the normal pressure side flange has the first wiring hole, the pressure side flange has second wiring hole coaxial with first wiring hole, radial direction elastic conjunction first seal in first wiring hole, radial direction elastic conjunction second seal in second wiring hole, described first, binding post is threadedly coupled in second wiring hole, affixed sealing sleeve pipe on the outside of the binding post.Primary seal is formed by the first seal and the pressure side flange, secondary seal is formed by the second seal and the normal pressure side flange.Reach good sealing effectiveness in the presence of two-stage sealing.The present invention has simple in construction, and cost is low, the advantages of good sealing effect.
Description
Technical field
The present invention relates to the low temperature of the conveying supercharging of low-temperature deep medium in the industries such as oil, chemical industry, metallurgy, steel to dive
Liquid pump field, more particularly to a kind of cryocable outlet joint.
Background technology
In the industries such as oil, chemical industry, metallurgy, steel, the cryogenic media such as general alkane, LNG, alkene have low temperature, easily
Fire characteristic that is explosive, easily gasifying.Therefore, it is severe to convey the immersed pump condition of work of such medium, each side such as material, sealing will
Ask harsh.To avoid the ignition media such as spark in circuit from causing security incident, the sealing property of the pump housing requires higher.It is especially low
Access joint of the supporting electric wire of warm immersed pump on the pump housing is the larger part of sealing difficulty.General producer passes through ceramics or glass
Glass is packaged to cable connector, and glass-ceramic packaging part complex process, manufacture difficulty are big, and cost is high.
A kind of low temperature glass encapsulation as described in Application No. 201320865886.7 electrically runs through seal nipple.It passes through
Glass On Metals conductor is sealed with metal adpting flange and intermediate pressure monitoring chamber cavity, and its cost is higher, glass capsulation
It is complicated.
In summary, how to produce a kind of simple in construction, cost is low, and the cryocable joint of good sealing effect is the present invention
Problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of simple in construction, cost is low, the cryocable joint of good sealing effect.
To realize goal of the invention, present invention employs following technical scheme：
A kind of cryocable outlet joint, it is characterised in that including flange assembly, the flange assembly include normal pressure side flange and
Pressure side flange, the normal pressure side flange are fixedly connected with the pressure side flange seal, and pressure is provided with the inside of the normal pressure side flange
Chamber, nitrogen is packaged with the pressure chamber, the normal pressure side flange has the first wiring hole, and the pressure side flange has and institute
State the second coaxial wiring hole of the first wiring hole, radial direction elastic conjunction first seal in first wiring hole, described second
Radial direction elastic conjunction second seal in wiring hole, binding post, the binding post are threadedly coupled in first, second wiring hole
The affixed sealing sleeve pipe in outside.
First, second seal is interference fitted with first, second wiring hole.At the both ends of the flange assembly
The interference seal of two-stage is formed, the interference fit of radial direction radially to be sealed between wiring hole and seal.The wiring
Post is used to access, stretches out cable with the sealing sleeve pipe, ensures the sealing around cable.It is two electricity in the pressure chamber
Cable end junction, it is filled with nitrogen cable connection by encapsulation and is wrapped up by nitrogen.For air, nitrogen is made
It will not be reacted for inert gas with cable, also can be effectively fire-retardant, voltage stabilizing, ensure the stability of annular seal space.
Preferably, first, second seal has the flange of homonymy.
The flange and the flange assembly end contact, form end face seal, improve first, second seal
Sealing effectiveness.Meanwhile the first seal, under highly pressurised liquid effect, the second seal under nitrogen pressure can be to end
Face compressional deformation.
Preferably, there is circumferential cone tooth on the outside of first, second seal.
The circumferential cone tooth is with the tooth of axially boring in first, second seal and first, second wiring hole
Interference fit in cutting engagement in length and breadth mutually.
Preferably, the first, second wiring hole inwall is provided with circumferential uniform axial direction cone tooth.
From microcosmic, interference fit between smooth cylinder can be because of the surface irregularity in cylinder microcosmic point/continuous
In the presence of a small amount of gap, turn into the weak spot of seal failure under long-term pressure-bearing working condition.The circumferential cone tooth is axially bored with described
Tooth mutual cutting engagement in length and breadth in the interference fit of first, second seal and first, second wiring hole.Pacifying
After the completion of dress, the mutual cutting that is circumferential, axially boring between tooth forms densely covered trellis grid.On the one hand the interference is matched somebody with somebody
It is more firm to close relatively existing smooth wall interference；On the other hand, trellis grid can eliminate there may be in light wall interference fit
Gap portion, formed labyrinth seal, effectively improve sealing.
Preferably, the taper hole that the first seal endoporus reduces for diameter from inside to outside.
The taper hole and the cable taper fit, the compression between this sealing can be increased plus screw threads for fastening after assembling
Amount, by the reaction force after cable and first seal material compression itself, the two is mutually brought into close contact, and protects
Demonstrate,prove the reliability of sealing.
Preferably, the binding post is connected through a screw thread with the sealing sleeve pipe.
On the one hand the threaded connection fixes the sealing sleeve pipe to the binding post.Another aspect screw thread can also provide
Sealing function.
Preferably, the binding post also has sealing ring gear.
There is labyrinth seal, outside has the rack that bolt drives, and is rotated by bolt and pulls tooth in the sealing ring gear
Bar banding sealing ring gear can strengthen the connectivity robustness and sealing between the binding post and sealing sleeve pipe.
Preferably, the flange assembly has extension screwed hole.
It is described extension screwed hole can make the flange assembly independently be used as cable connector or be installed on immersed pump or other
The surface of device.Increase its autgmentability.
Preferably, the normal pressure side flange is provided with pressure monitoring device.
The pressure monitoring device is arranged at the normal pressure side flange side, and the pressure of nitrogen in the flange assembly is entered
Row measure, illustrate pressure side flange and its seal failure when measuring pressure and becoming big, illustrate normal pressure side when measuring pressure and becoming small
Flange and its seal failure.Easy access personnel have found failure conditions and understand invalid position in time.
Preferably, first, second seal is modified polytetrafluoroethylsealed sealed part.
Modified PTFE production cost is low, and elasticity is good, applied to manufacture described first.Second seal can reduce this
The production cost of invention, difficulty, and still ensure outstanding sealing.
The beneficial effects of the present invention are：Primary seal is formed by the first seal and the pressure side flange,
Secondary seal is formed by the second seal and the normal pressure side flange.Reach good close in the presence of two-stage sealing
Seal effect.Sealing is strengthened by different mechanisms such as the interference fit of double wedge, flange, taper hole cooperation, threaded connection, sealing ring gears
Effect and reliability.By pressure monitoring device and the stability of nitrogen steady pressure cavity pressure and component, joint is set to work
Balanced condition, can timely Measuring error when going wrong.First, second seal configuration made of modified tetrafluoro is simple, raw
It is low to produce cost.The present invention has simple in construction, and cost is low, the advantages of good sealing effect.
Figure of description
Fig. 1 is the schematic cross-section of the present invention；
Fig. 2 is the front view of the present invention；
Items are respectively in figure：1 flange assembly, 11 normal pressure side flanges, 111 first wiring holes, 12 pressure side flanges, 121 second
Wiring hole, 13 pressure chambers, 21 first seals, 211 taper holes, 22 second seals, 23 flange, 3 binding posts, 4 sealing sleeve pipes, 5
Seal ring gear, 6 extension screwed holes, 7 pressure monitoring devices.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail：One kind as shown in Figure 1, 2 is installed on low temperature immersed pump
Cryocable joint, wherein, outside pressure area P1 pressure in 5MPa or so, immersed pump pressure P3 in 1 atm higher.
Cryocable joint includes flange assembly 1, and flange assembly 1 includes normal pressure side flange 11 and pressure side flange 12, normal pressure side flange
It is bolted between 11 and pressure side flange 12, meanwhile, normal pressure side flange 11 is provided with round platform circular groove with pressure side flange 12
The sealing ring pressed between ensures the sealing between flange assembly 1.Normal pressure side flange 11 is connected with the immersed pump pump housing, pressure
Side flange is immersed in cryogenic media.The inner side of normal pressure side flange 11 is provided with pressure chamber 13, and a 0.8MPa left sides are packaged with pressure chamber 13
Right nitrogen is as P2 pressure areas.
In the present embodiment, the middle part of normal pressure side flange 11 is provided with three the first wiring holes 111, and the middle part of pressure side flange 12 is provided with
Three second wiring holes 121 coaxial with the first wiring hole 111, radial direction elastic conjunction first seal in the first wiring hole 111
21, radial direction elastic conjunction second seal 22 in the second wiring hole 121, first, second wiring hole 111,121 is by screw thread and connects
Terminal 3 connects, the affixed sealing sleeve pipe 4 in the outside of binding post 3.
In the present embodiment, first, second seal 21,22 has the flange 211 for being also directed to P1 sides.In P1 and P2 pressure
The lower flange 211 of power effect can be fitted tightly over flange assembly surface.
It can be formed by above structure and be sealed positioned at the two-stage of P1/P2 and flange contact facings, there is provided better seal
With fail safe.
A kind of cryocable outlet joint according to claim 1, it is characterised in that outside first, second seal 21,22
Side has multiple tracks circumferentially cone tooth.
In the present embodiment, first, second wiring hole 111,121 inwalls are provided with circumferential uniform axial direction cone tooth.
Normal pressure side/pressure side flange 11,12 is heated in assembling, at the same cool down at another place first, second seal 21,
22.Increase first, second wiring hole 111,121 internal diameters by the effect expanded with heat and contract with cold, outside first, second seal 21,22
Footpath reduces.Now first, second seal 21,22 can be put into first, second wiring hole 111,121.Returning to natural epidemic disaster in booth
After degree, first, second wiring hole 111,121 internal diameters reduce, first, second seal 21, the increase of 22 external diameters.Axially cone tooth and week
To extruding occlusion in length and breadth mutually between cone tooth.Form the Interference contact part of compact and firm.Bore what occlusion between tooth was formed simultaneously
Coffin also provides more preferable air-tightness.
In the present embodiment, the endoporus of second seal 22 is the taper hole 211 that diameter reduces from inside to outside.
In the present embodiment, binding post 3 is connected through a screw thread with sealing sleeve pipe 4.
In the present embodiment, binding post 3 also has sealing ring gear 5.
In the present embodiment, flange assembly 1 is with extension screwed hole 6.
In the present embodiment, normal pressure side flange 11 is provided with pressure monitoring device 7.The pressure-detecting device 7 can be facility
Detector inside normal pressure side flange 11.It can also be the tabular form meter stretched out via the side of normal pressure side flange 11.
In the present embodiment, first, second seal 22 is modified polytetrafluoroethylsealed sealed part.
Simply the preferred embodiment of the present invention is described for above example, not to the spirit and scope of the present invention
It is defined, on the premise of design concept of the present invention is not departed from, ordinary people in the field makes to technical scheme
All variations and modifications, each fall within protection scope of the present invention, the claimed technology contents of the present invention, whole note
Carry in detail in the claims.
Claims (10)
1. a kind of cryocable outlet joint, it is characterised in that including flange assembly（1）, the flange assembly（1）Including normal pressure
Side flange（11）And pressure side flange（12）, the normal pressure side flange（11）With pressure side flange（12）It is sealedly and fixedly connected, institute
State normal pressure side flange（11）Inner side is provided with pressure chamber（13）, the pressure chamber（13）Inside it is packaged with nitrogen, the normal pressure side flange
（11）With the first wiring hole（111）, the pressure side flange（12）With with first wiring hole（111）Coaxial second
Wiring hole（121）, first wiring hole（111）Middle radial direction elastic conjunction first seal（21）, second wiring hole
（121）Middle radial direction elastic conjunction second seal（22）, first, second wiring hole（111、121）Middle threaded connection wiring
Post（3）, the binding post（3）The affixed sealing sleeve pipe in outside（4）.
A kind of 2. cryocable outlet joint according to claim 1, it is characterised in that first, second seal
（21、22）Flange with homonymy（211）.
A kind of 3. cryocable outlet joint according to claim 2, it is characterised in that first, second seal
（21、22）Outside has circumferential cone tooth.
A kind of 4. cryocable outlet joint according to claim 3, it is characterised in that first, second wiring hole
（111、121）Inwall is provided with circumferential uniform axial direction cone tooth.
A kind of 5. cryocable outlet joint according to claim 4, it is characterised in that the first seal（21）It is interior
The taper hole that hole reduces for diameter from inside to outside（211）.
A kind of 6. cryocable outlet joint according to claim 1, it is characterised in that the binding post（3）With it is described
Sealing sleeve pipe（4）It is connected through a screw thread.
A kind of 7. cryocable outlet joint according to claim 6, it is characterised in that the binding post（3）Also have
Seal ring gear（5）.
A kind of 8. cryocable outlet joint according to claim 1, it is characterised in that the flange assembly（1）Have
Extend screwed hole（6）.
A kind of 9. cryocable outlet joint according to claim 1, it is characterised in that the normal pressure side flange（11）If
There is pressure monitoring device（7）.
A kind of 10. cryocable outlet joint according to claim 1, it is characterised in that first, second seal
（22）For the polytetrafluoroethylsealed sealed part of modification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711189900.5A CN107706880A (en) | 2017-11-24 | 2017-11-24 | A kind of cryocable outlet joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711189900.5A CN107706880A (en) | 2017-11-24 | 2017-11-24 | A kind of cryocable outlet joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107706880A true CN107706880A (en) | 2018-02-16 |
Family
ID=61180908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711189900.5A Pending CN107706880A (en) | 2017-11-24 | 2017-11-24 | A kind of cryocable outlet joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107706880A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19718280C1 (en) * | 1997-05-01 | 1999-02-18 | Daetwyler Ag | Power cable systems with connecting fittings, plastic insulated high voltage cables and pipe collars |
| CN1768453A (en) * | 2003-04-03 | 2006-05-03 | 约翰美兹林高协会公司 | Compression-type hard-line connector |
| CN101000271A (en) * | 2006-01-10 | 2007-07-18 | 昆山双桥传感器测控技术有限公司 | Anti-corrosion pressure sensor |
| CN102005708A (en) * | 2009-09-03 | 2011-04-06 | 中国石化集团四川维尼纶厂 | Electric igniter wiring device |
| CN103633611A (en) * | 2013-12-26 | 2014-03-12 | 大连深蓝泵业有限公司 | Electric penetrating sealing joint for low temperature glass package |
| CN104577936A (en) * | 2014-12-30 | 2015-04-29 | 柳州欧维姆机械股份有限公司 | Pressure-tight wire connection device |
| CN105305327A (en) * | 2015-12-04 | 2016-02-03 | 中国航空工业集团公司洛阳电光设备研究所 | Low pressure cable sealing device and manufacturing method thereof |
| CN205194941U (en) * | 2015-11-13 | 2016-04-27 | 北京方等传感器研究所有限公司 | Connecting structure for sealing |
| CN105545242A (en) * | 2016-01-28 | 2016-05-04 | 沈阳工业大学通益科技有限公司 | High-temperature wellhead penetrator structure for electric submersible pump |
| CN206349738U (en) * | 2016-12-27 | 2017-07-21 | 上海东缘机电设备有限公司 | Voltage electrical penetration piece in ultralow temperature |
| CN207530513U (en) * | 2017-11-24 | 2018-06-22 | 湖州三井低温设备有限公司 | A kind of cryocable outlet joint |
-
2017
- 2017-11-24 CN CN201711189900.5A patent/CN107706880A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19718280C1 (en) * | 1997-05-01 | 1999-02-18 | Daetwyler Ag | Power cable systems with connecting fittings, plastic insulated high voltage cables and pipe collars |
| CN1768453A (en) * | 2003-04-03 | 2006-05-03 | 约翰美兹林高协会公司 | Compression-type hard-line connector |
| CN101000271A (en) * | 2006-01-10 | 2007-07-18 | 昆山双桥传感器测控技术有限公司 | Anti-corrosion pressure sensor |
| CN102005708A (en) * | 2009-09-03 | 2011-04-06 | 中国石化集团四川维尼纶厂 | Electric igniter wiring device |
| CN103633611A (en) * | 2013-12-26 | 2014-03-12 | 大连深蓝泵业有限公司 | Electric penetrating sealing joint for low temperature glass package |
| CN104577936A (en) * | 2014-12-30 | 2015-04-29 | 柳州欧维姆机械股份有限公司 | Pressure-tight wire connection device |
| CN205194941U (en) * | 2015-11-13 | 2016-04-27 | 北京方等传感器研究所有限公司 | Connecting structure for sealing |
| CN105305327A (en) * | 2015-12-04 | 2016-02-03 | 中国航空工业集团公司洛阳电光设备研究所 | Low pressure cable sealing device and manufacturing method thereof |
| CN105545242A (en) * | 2016-01-28 | 2016-05-04 | 沈阳工业大学通益科技有限公司 | High-temperature wellhead penetrator structure for electric submersible pump |
| CN206349738U (en) * | 2016-12-27 | 2017-07-21 | 上海东缘机电设备有限公司 | Voltage electrical penetration piece in ultralow temperature |
| CN207530513U (en) * | 2017-11-24 | 2018-06-22 | 湖州三井低温设备有限公司 | A kind of cryocable outlet joint |
Non-Patent Citations (1)
| Title |
|---|
| 顾永泉: "《流体动密封 下》", 31 August 1992, 中国石化出版社, pages: 86 - 88 * |
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