CN104514927B - A kind of quick detachable differential pressure measurement structure - Google Patents
A kind of quick detachable differential pressure measurement structure Download PDFInfo
- Publication number
- CN104514927B CN104514927B CN201310457275.3A CN201310457275A CN104514927B CN 104514927 B CN104514927 B CN 104514927B CN 201310457275 A CN201310457275 A CN 201310457275A CN 104514927 B CN104514927 B CN 104514927B
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- Prior art keywords
- seal head
- sealing
- inner tube
- welding
- bulb
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Classifications
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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
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
- F16L5/06—Sealing by means of a swivel nut compressing a ring or sleeve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of quick detachable differential pressure measurement structure, including preceding seal head suit on inner pipe, one end of preceding seal head is used to be connected with outer tube, the other end is connected by nut with rear seal head, seal head includes a sealing bulb and the fairlead of inner tube afterwards, and preceding seal head and the end face that rear seal head is connected are provided with the conical surface matched with sealing bulb.The present invention is for welding manner of the prior art, the sealing structure of the present invention need not be subjected to, technical merit to workman is not required, solve the problem of welding quality depends on welder's technical merit in conventional seals structure, so that the uniform quality of product, sealing effectiveness can be protected, and solve the easy through welding inner tube in welding procedure and cause the problem of interior blockage drainage is obstructed.
Description
Technical field
The present invention relates to the quick detachable measurement structure for measuring inner cavity chamber's pressure difference in chamber pressure container inside and outside HTHP,
Specifically a kind of quick detachable differential pressure measurement structure.
Background technology
In the thermal-hydraulic experiment of some HTHPs, experimental section by pressure-bearing exocoel and include experimental subjects
Inner cavity chamber constitutes, and test medium flow in the runner of inner cavity chamber, and exocoel is the slough connected with inner cavity chamber, inner cavity chamber and
There is little pressure difference between exocoel, due to experiment purpose or for the monitoring to experimental subjects hydraulic regime, it is necessary to right
Pressure difference in inner cavity chamber is measured, and typically introduces some differential pressure measurement points of needs in inner cavity chamber and exocoel with stainless steel tube
On impulse disk between room, the pressure guiding pipe installed on impulse disk is led to outside exocoel room by flange, is formed outside flange by interior
The sleeve pipe of pressure guiding pipe and outer tube composition, it is necessary to bear height to outer tube while inner tube pressure introducing instrument is measured
Laminate section is sealed, such as Fig. 1, and current encapsulating method is to weld outer tube and inner tube, by weld come to outer tube with it is interior
Sealed between pipe and be connected to pressure guiding pipe, inner tube pressure is then introduced into measuring instrumentss, but the method will to welding
Ask higher, easily inner tube is blocked during welding, while needing plumb joint excision can just pull down outer tube and inner tube during dismounting, to installation
Carry out larger inconvenience with belt removal.
The content of the invention
It is an object of the invention to provide a kind of quick detachable differential pressure measurement structure, solve current by outer tube and inner tube
Welding requirements that the impulse encapsulating method of welding is brought is higher, welding when the problem of easily block inner tube, reach it is convenient install and
The purpose of dismounting.
The purpose of the present invention is achieved through the following technical solutions：
A kind of quick detachable differential pressure measurement structure, including preceding seal head on inner pipe is set with, one end of preceding seal head is used
It is connected in outer tube, the other end is connected by nut with rear seal head, rear seal head includes a sealing bulb and inner tube
Fairlead, the conical surface matched with sealing bulb is provided with preceding seal head and the end face that rear seal head is connected.In reality
Production process in, by substantial amounts of repetition process, it is found by the applicant that there is certain ask in current differential pressure sealing means
Topic：Requirement first to welding technique is higher, even welding technique very brilliant old technical staff may also go wrong, and
And because diameter of inner pipe is smaller, in welding process, the problem of easy through welding of inner tube results in blockage, impulse goes wrong, based on this
The problem of existing, applicant is by carefully studying and conceiving repeatedly, and having invented this programme is used to solve problem above, uses
When, one of port of preceding seal head and the outer tube of pressure guiding pipe are welded, and the inner tube set of pressure guiding pipe is mounted in preceding seal head,
The internal diameter of preceding seal head being gradually reduced from outer tube toward the other end, until its internal diameter and inner tube match, but exist it is essential
Fit-up gap, the gap between inner and outer tubes is reduced, then preceding seal head and rear seal head pass through nut fixing seal
Connection, wherein rear seal head includes two parts：Seal bulb and fairlead, the wherein internal diameter of fairlead and inner tube phase
Match somebody with somebody, its mouth of pipe exported as guiding inner tube, the end face closing of nut is provided with a through hole on the end face of closing,
Fairlead passes through the through hole, and the external screw thread matched with the internal thread of nut is provided with preceding seal head, close to nut
Preceding seal head is internally provided with the conical surface of indent, and sealing bulb, sealing bulb and cone match are provided with the end of fairlead
Ball face sealing can be completed, when rotation nut, when it lock with preceding seal head, sealing bulb and cone match, completion high pressure
Sealing；When rotation nut, when it is unclamped with preceding seal head, it is easy to the replacing of impulse structure, in this way, relative in the prior art
Welding manner for, sealing structure of the invention need not be subjected to, and the technical merit to workman is not required, solution
The problem of welding quality depends on welder's technical merit in conventional seals of having determined structure so that the uniform quality of product, it is close
Envelope effect can be protected, and solve the easy through welding inner tube in welding procedure and cause interior blockage drainage is obstructed to ask
Topic.
The annular recess relative with sealing bulb is provided with the preceding seal head, sealing is installed in the groove
Ring.In order to which the pressure difference to inner and outer pipes is sealed, an annular recess, annular recess and conical surface phase are set on preceding seal head
Even, inner tube is passed through after annular recess, sets one to enclose sealing ring on the outside of inner tube, during nut is tightened, and sealing bulb can
To withstand sealing ring, oppress sealing ring deformation and fill the space in annular recess；Pass through the compressing of ball face sealing and sealing ring
Sealing can realize the sealing between inner and outer pipes well.
The sealing ring is made up of polytetrafluoroethylene (PTFE).Further, polytetrafluoroethylene (PTFE) is formed by tetrafluoroethene is aggregated
High-molecular compound, with excellent chemical stability, corrosion resistance, sealing, high lubrication non-stick, electrical insulating property and good
Good anti-aging endurance, although it is conventional material, but is not applied also in the Experiment of Thermophysics field of nuclear industry, the present invention
It is for the little characteristic of inside and outside differential pressure, creative improvement using the sealed water of institute that it, which is used, as sealing ring.
The present invention compared with prior art, has the following advantages and advantages：
A kind of 1 quick detachable differential pressure measurement structure of the present invention, for welding manner of the prior art, the present invention
Sealing structure need not be subjected to, the technical merit to workman is not required, solve in conventional seals structure weld
Connect the problem of quality is dependent on welder's technical merit so that the uniform quality of product, sealing effectiveness can be protected, and
And solve the easy through welding inner tube in welding procedure and cause the problem of interior blockage drainage is obstructed；
A kind of 2 quick detachable differential pressure measurement structures of the present invention, set an annular recess, annular recess on preceding seal head
It is connected with the conical surface, inner tube is passed through after annular recess, sets one to enclose sealing ring on the outside of inner tube, it is close during nut is tightened
Blocking head can withstand sealing ring, oppress sealing ring deformation and fill the space in annular recess；Pass through ball face sealing and sealing
The compressing sealing of ring can realize that low voltage difference is sealed between the high pressure sealing of outer tube and inner and outer pipes well；
A kind of 3 quick detachable differential pressure measurement structures of the present invention, two sealed structures work, this sealing structure are installed simultaneously
In more than distance high-temperature cylinder 200mm, slough, the model that temperature can be down to below sealing ring invalid temperature are belonged in pressure guiding pipe
Enclose, so that this structure can be to pressure 17.5MPa, the medium differential pressure that 350 DEG C of temperature is measured, while simple installation is reached,
It is readily disassembled, and the purpose that impulse structure can be reused.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is pressure guiding pipe sealed structural representation of the prior art；
Fig. 2 is schematic structural view of the invention.
Mark and corresponding parts title in accompanying drawing：
1-preceding seal head, 2-sealing ring, 3-rear seal head, 31- sealing bulbs, 32- fairleads, 4-nut, 5-interior
Pipe.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make
For limitation of the invention.
Embodiment
As shown in Fig. 2 a kind of quick detachable differential pressure measurement structure of the present invention, including the preceding seal head being sleeved in inner tube 5
1, preceding seal head 1 has two end faces, and one of end face is used to weld with outer tube, and another end face is connected with rear seal head 3,
The preceding inside of seal head 1 is cavity structure, and the diameter of its cavity is gradually reduced from outer tube one end, is decreased to and the diameter phase of inner tube 5
The cavity of one section of diameter is kept after matching somebody with somebody, then expands in preceding seal head 1 and forms annular recess, then internal diameter continues to expand simultaneously
The conical surface is formed, rear seal head 3 includes sealing bulb 31 and the fairlead 32 of inner tube 5, the intracavity diameter and inner tube of fairlead 32
5 match, sealing bulb 31 on have spherical seal surface, sealing bulb 31 on provided with match with inner tube 5 and with fairlead 32
Inner chamber connection hole, inner tube through preceding seal head 1 internal cavities then pass through sealing bulb 31, fairlead 32, in ring-type
Sealing ring is set with groove, sealing ring is made of polytetrafluoroethylene (PTFE), seals the sphere of bulb 31 and the conical surface of preceding seal head 1
Match, external screw thread, in addition to nut 4 are provided with the outside of preceding seal head 1, one end closing of nut 4 is set in the blind end
Through hole is equipped with, drainage tube 32 passes through the through hole, and sealing bulb 31 is located between preceding seal head 1 and the end face of nut 4, rotates spiral shell
It is female so that sealing bulb 31 is close to sealing ring 2, the crush seal ring 2 of bulb 31 is sealed, while sealing bulb 31 and cone match
Ball face sealing is formed, is completed to the sealing between inner tube 5 and outer tube.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (1)
1. a kind of quick detachable differential pressure measurement structure, it is characterised in that：Including being sleeved on inner tube（5）On preceding seal head（1）, it is preceding
Seal head（1）One end be used for and outer tube（6）Connection, the other end passes through nut（4）With rear seal head（3）Connection, rear seal head
（3）Including a sealing bulb（31）And inner tube（5）Fairlead（32）, in preceding seal head（1）With rear seal head（3）Even
The end face connect is provided with one and sealing bulb（31）The conical surface matched；In the preceding seal head（1）On be provided with and seal
Bulb（31）Relative annular recess, sealing ring is provided with the groove（2）；The sealing ring（2）By polytetrafluoroethylene (PTFE) system
Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457275.3A CN104514927B (en) | 2013-09-30 | 2013-09-30 | A kind of quick detachable differential pressure measurement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457275.3A CN104514927B (en) | 2013-09-30 | 2013-09-30 | A kind of quick detachable differential pressure measurement structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104514927A CN104514927A (en) | 2015-04-15 |
| CN104514927B true CN104514927B (en) | 2017-08-08 |
Family
ID=52790637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310457275.3A Active CN104514927B (en) | 2013-09-30 | 2013-09-30 | A kind of quick detachable differential pressure measurement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104514927B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972327A (en) * | 2016-05-31 | 2016-09-28 | 安徽万瑞冷电科技有限公司 | Novel membrane separator sealing device |
| CN107705863B (en) * | 2017-10-16 | 2018-12-18 | 中国核动力研究设计院 | A kind of high temperature and pressure experiment ontology impulse seal and installation method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3104974A1 (en) * | 1981-02-12 | 1982-09-16 | U.I. Lapp Kg, 7000 Stuttgart | Insert for screwed connections |
| DE4223514A1 (en) * | 1992-07-17 | 1994-01-20 | Kleinhuis Hermann Gmbh | Screw connection made of plastic for insertion and implementation, sealing and strain relief of cables, lines or hoses |
| CN1095805A (en) * | 1992-11-30 | 1994-11-30 | 麦卡伯工业有限公司 | A kind of fixing device |
| CN102889432A (en) * | 2012-10-11 | 2013-01-23 | 武汉博莱科技发展有限责任公司 | Metal vacuum cavity electric insulation sealing device |
| CN103216680B (en) * | 2013-04-24 | 2015-05-20 | 苏州赛智达智能科技有限公司 | Seal joint of lead wire in liquefied natural gas (LNG) container |
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2013
- 2013-09-30 CN CN201310457275.3A patent/CN104514927B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104514927A (en) | 2015-04-15 |
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