CN110206956A - A kind of low pressure valve group power oil pipe line - Google Patents
A kind of low pressure valve group power oil pipe line Download PDFInfo
- Publication number
- CN110206956A CN110206956A CN201910574316.4A CN201910574316A CN110206956A CN 110206956 A CN110206956 A CN 110206956A CN 201910574316 A CN201910574316 A CN 201910574316A CN 110206956 A CN110206956 A CN 110206956A
- Authority
- CN
- China
- Prior art keywords
- pipeline section
- gasket
- oil pipe
- low pressure
- pipe line
- 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
- 238000010079 rubber tapping Methods 0.000 claims abstract description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 29
- 238000012360 testing method Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 241000309551 Arthraxon hispidus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/008—Branching pipes; Joining pipes to walls for connecting a measuring instrument
-
- 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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/021—T- or cross-pieces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Joints With Pressure Members (AREA)
- Valve Housings (AREA)
Abstract
The invention belongs to pipeline interconnection technique fields, and in particular to a kind of low pressure valve group power oil pipe line, comprising: include: pipeline section A gasket A, threeway, plug, pressure tapping, gasket B, needle valve, pipeline section B, union and pipeline section C；Three sections of pipeline sections of the threeway are welded to connect with pipeline section A, pipeline section B and needle valve one end respectively；Gasket A is provided on the pipeline section A other end；The pressure tapping and needle valve weld；The plug is threadedly coupled by gasket B with pressure tapping；The pipeline section B other end is threadedly coupled by locking nut with pipeline section C.
Description
Technical field
The invention belongs to pipeline interconnection technique fields, and in particular to a kind of low pressure valve group power oil pipe line.
Background technique
With low pressure valve oil motor using the form being threadedly coupled, joint often leaks oil pipe in the prior art,
It can not be handled during power of the assembling unit operation, very big hidden danger is brought to unit safety, stable operation.
During major overhaul, turbine regulating system carries out needing to remove in oil pipe between static test, and installation test is faced
When pressure tapping, test after the completion of need to restore pipeline again, which takes a long time, while there is also oil leak risks.Pipeline is living
Connector being dismounted for multiple times during overhaul, joint sealing face are subject to destroy, and easily cause union oil leak during unit operation.
Since former union is there are design defect, when in-line is passed through the pressure oil of 5MPa or so, union fastening nut can rise extremely,
It can not be fastened, oil leak defect can not be eliminated naturally, and screw thread is easy to damage, bring hidden danger to unit safety, stable operation.
Therefore it needs to design a kind of low pressure valve group power oil pipe line, for improving problems of the prior art, improve
Working efficiency, that is, safety.
Summary of the invention
Object of the present invention is to provide a kind of low pressure valve group power oil pipe line in view of the above shortcomings of the prior art, for solving
The technical issues of pipeline is with oil motor oil leak, being dismounted for multiple times pressure tapping during nuclear power station overhaul in the prior art.
The technical scheme is that
A kind of low pressure valve group power oil pipe line, comprising: pipeline section A1 gasket A2, threeway 3, plug 4, pressure tapping 5, gasket
B6, needle valve 7, pipeline section B8, union 9 and pipeline section C10；Three sections of pipeline sections of the threeway 3 respectively with pipeline section A1, pipeline section B8 and needle
7 one end of type valve is welded to connect；Gasket A2 is provided on the pipeline section A1 other end；The pressure tapping 5 is welded with needle valve 7
It connects；The plug 4 is threadedly coupled by gasket B6 with pressure tapping 5；The pipeline section B8 other end passes through locking nut 9 and pipeline section
C10 is threadedly coupled.
One end pipeline section B8 as described above is threadedly coupled by locking nut 9 with pipeline section C10.
It is provided with taper hole inside one end that pipeline section B8 as described above is contacted with pipeline section C10, taper hole aperture inside diameter ranges:
25.9mm-26.1mm。
The side connector that pipeline section C10 as described above is contacted with pipeline section B8 is spherical structure, spherojoint outer diameter range are as follows:
24.9mm-25.1mm。
The internal whorl tooth of locking nut 9 as described above is away from for 2mm.
Gasket A2 as described above is red copper material gasket, and gasket B6 is nickel material gasket.
The invention has the following advantages:
[1] the low pressure valve group power oil pipe line that the present invention designs, by pipeline with the connection type of oil motor by being threadedly coupled
It is changed to be welded to connect, eliminates hidden leakage defect, improve the stability of unit safety operation；
[2] oil pipeline that the present invention designs also adds threeway and needle valve, can be directly by the temporary pressure of test
Table is mounted on above the connector of needle valve, without dismounting pipeline, is greatly reduced workload, is optimized the overhaul duration, eliminate
Because of thread biting locking caused by repeated disassembled and assembled.The risk that sealing performance reduces；
[3] the low pressure valve group power oil pipe line that the present invention designs has carried out union to redesign transformation, has made its pressure-bearing
Ability is higher, and sealing performance is outstanding.
Detailed description of the invention
Fig. 1 is low pressure valve group power oil pipe line apparatus structural schematic diagram designed by the present invention；
Fig. 2 is low pressure valve group power oil pipe line apparatus movable joint structure schematic diagram designed by the present invention
Fig. 3 is low pressure valve group power oil pipe line apparatus union entrance pipeline section B structure figure designed by the present invention
Fig. 4 be low pressure valve group power oil pipe line apparatus union outlet pipe section C-structure figure designed by the present invention wherein: 1,
Pipeline section A, 2, gasket A, 3, threeway, 4, plug, 5, pressure tapping, 6, gasket B, 7, needle valve, 8, pipeline section B, 9, locking nut,
10, pipeline section C.
Specific embodiment
The technology of the present invention is described further below:
As shown in Figure 1, a kind of low pressure valve group power oil pipe line, comprising: pipeline section A1 gasket A2, threeway 3, plug 4, pressure gauge
Connector 5, gasket B6, needle valve 7, pipeline section B8, locking nut 9 and pipeline section C10；Three sections of pipeline sections of the threeway 3 respectively with pipeline section
A1, pipeline section B8 and 7 one end of needle valve are welded to connect；Gasket A2 is provided on the pipeline section A1 other end；The pressure tapping 5
It is welded with needle valve 7；The plug 4 is threadedly coupled by gasket B6 with pressure tapping 5；The pipeline section B8 other end passes through locking screw
Mother 9 is threadedly coupled with pipeline section C10.
Union as described above is integrally in bite type structure, and union specifically includes pipeline section B8, locking nut 9, pipeline section
C10；
Taper hole, taper hole aperture inside diameter ranges: 25.9mm-26.1mm are provided in pipeline section B8 as described above；
The spherojoint outer diameter range of one end pipeline section C10 as described above are as follows: 24.9mm-25.1mm；
The internal whorl tooth of locking nut 9 as described above is away from are as follows: 2mm.
Gasket A2 as described above is red copper material gasket, and gasket B6 is nickel material gasket；
Embodiment:
When being operated using apparatus of the present invention, testing crew removes plug 4 and gasket B6, and the gasket B6 more renewed will be tried
It tests and is connected through a screw thread with temporary pressure table and pressure tapping 5, open stainless steel needle valve 7, pressure gauge oil circuit is opened, pressure
Table is in available mode；After the test, pressure gauge is removed, reset condition is restored.The dismounting of temporary pressure table is without tearing open
Entire low pressure valve group power oil pipe line is filled, workload is greatly reduced, optimizes the overhaul duration, eliminate oil leak risk.
The pipeline section A1 and pipeline section B8 for a kind of low pressure valve group power oil pipe line that the present invention designs pass through with stainless steel needle valve 7
Threeway 3 is welded, and pressure tapping 5 is welded on stainless steel needle valve 7, is helped and is closed valve oil motivation pipeline and low pressure valve group power oil pipe
Line is threadedly coupled by union.
Connection type between pipeline section A1, pipeline section B8 in the invention device and low pressure valve group oil motor is that welding connects
It connects, has prevented the generation of leakage phenomenon, while increased needle valve 7 and pressure tapping 5, needed for speed-regulating system static test
Test can be directly mounted on equipment installation with temporary pressure table, no longer needs to dismount equipment installation, substantially increases work
Make efficiency.
In addition, being redesigned to union, improved union bearing capacity is higher, and sealing performance more goes out
Color is the performance comparative analysis of the union to improved union and before improving below:
Assuming that the power that union bulb presses to union taper hole is 300kg, then conical surface load F=300/ (2 × tg18.5 °)
=448kg
Bear area S=2.3 × (1.8 × 2) × 2=16.5mm2
Tensile stress sigma=448kg/0.165cm2=2715kg/cm2 of generation
Improved union is distinguished as follows as shown in attached drawing 2, Fig. 3, Fig. 4 compared with the union before improvement:
1, taper hole taper is 37 °, aperture internal diameter 26 ± 0.1mm of Φ, bulb outer diameter 25 ± 0.1mm of Φ, compares more original work
Connector, contact point have moved inward one times, and stress width doubles；
2, loose joint head thread nominal diameter is improved to 39mm by 33mm, and screw pitch is improved to 2mm by 1.5mm, so that union
It bears area and increases 5 times；
Although fine thread tensile strength is not poor, often abrasion resistance is poor after dismounting, so screw pitch is changed to 2mm
3, union bulb and union taper hole contact area increase by 80%, and stress reduces, and the service life improves；
4, improved union intensive analysis:
Bear area S=6.4 × (3.5 × 2) × 89.6mm2=0.896cm2
Stress σ=448kg/0.896cm2=500kg/cm2 of generation
It is obvious that the stress that improved union is born improves union less than 1/5 of union before improving
Intensity.
The present invention is explained in detail above in conjunction with embodiment, but the present invention is not limited to above-described embodiments, at this
Field those of ordinary skill within the scope of knowledge, can also make various changes without departing from the purpose of the present invention
Change.The content being not described in detail in the present invention can use the prior art.
Claims (6)
1. a kind of low pressure valve group power oil pipe line characterized by comprising pipeline section A (1) gasket A (2), threeway (3), plug
(4), pressure tapping (5), gasket B (6), needle valve (7), pipeline section B (8), union (9) and pipeline section C (10)；The threeway
(3) three sections of pipeline sections are welded to connect with pipeline section A (1), pipeline section B (8) and needle valve (7) one end respectively；The pipeline section A (1) is another
Gasket A (2) are provided on end；The pressure tapping (5) and needle valve (7) are welded；The plug (4) by gasket B (6) with
Pressure tapping (5) is threadedly coupled；Pipeline section B (8) other end is threadedly coupled by locking nut (9) with pipeline section C (10).
2. a kind of low pressure valve group power oil pipe line as described in claim 1, it is characterised in that: described pipeline section B (8) one end passes through
Locking nut (9) is threadedly coupled with pipeline section C (10), forms movable joint structure.
3. a kind of low pressure valve group power oil pipe line as claimed in claim 2, it is characterised in that: the pipeline section B (8) and pipeline section C
(10) taper hole, taper hole aperture inside diameter ranges: 25.9mm-26.1mm are provided with inside the one end contacted.
4. a kind of low pressure valve group power oil pipe line as claimed in claim 3, it is characterised in that: the pipeline section C (10) and pipeline section B
(8) side connector contacted is spherical structure, spherojoint outer diameter range are as follows: 24.9mm-25.1mm.
5. a kind of low pressure valve group power oil pipe line as claimed in claim 4, it is characterised in that: the inside of the locking nut 9
Thread is away from for 2mm.
6. a kind of low pressure valve group power oil pipe line as claimed in claim 5, it is characterised in that: the gasket A (2) is red copper material
Matter gasket, gasket B (6) are nickel material gasket.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910574316.4A CN110206956A (en) | 2019-06-28 | 2019-06-28 | A kind of low pressure valve group power oil pipe line |
| RU2020119325A RU2020119325A (en) | 2019-06-28 | 2020-06-10 | Low pressure valve group oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910574316.4A CN110206956A (en) | 2019-06-28 | 2019-06-28 | A kind of low pressure valve group power oil pipe line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110206956A true CN110206956A (en) | 2019-09-06 |
Family
ID=67795319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910574316.4A Pending CN110206956A (en) | 2019-06-28 | 2019-06-28 | A kind of low pressure valve group power oil pipe line |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110206956A (en) |
| RU (1) | RU2020119325A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027516Y (en) * | 2007-05-17 | 2008-02-27 | 廉军 | Screw pump wellhead device |
| CN202165787U (en) * | 2011-07-11 | 2012-03-14 | 申科滑动轴承股份有限公司 | Novel divergent oil inlet device |
| CN203629805U (en) * | 2013-12-03 | 2014-06-04 | 上海中船三井造船柴油机有限公司 | Simulated testing device for pressure switch of marine low-speed diesel engine |
| CN205173992U (en) * | 2015-10-26 | 2016-04-20 | 中国石油化工股份有限公司 | Relief valve dismouting replacement detection device |
| CN105806557A (en) * | 2016-05-20 | 2016-07-27 | 北京斯贝克科技有限责任公司 | Valve for on-line verification and calibration of pressure gauge |
| CN208171591U (en) * | 2018-06-11 | 2018-11-30 | 广西平班水电开发有限公司 | A kind of safety valve inspection dedicated unit |
| CN208171515U (en) * | 2018-04-09 | 2018-11-30 | 泾阳县睿驰科技有限公司 | The novel mileometer adjustment platform of vehicle gas pressure gauge |
| CN211344368U (en) * | 2019-06-28 | 2020-08-25 | 江苏核电有限公司 | Low pressure valves power oil pipeline |
-
2019
- 2019-06-28 CN CN201910574316.4A patent/CN110206956A/en active Pending
-
2020
- 2020-06-10 RU RU2020119325A patent/RU2020119325A/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027516Y (en) * | 2007-05-17 | 2008-02-27 | 廉军 | Screw pump wellhead device |
| CN202165787U (en) * | 2011-07-11 | 2012-03-14 | 申科滑动轴承股份有限公司 | Novel divergent oil inlet device |
| CN203629805U (en) * | 2013-12-03 | 2014-06-04 | 上海中船三井造船柴油机有限公司 | Simulated testing device for pressure switch of marine low-speed diesel engine |
| CN205173992U (en) * | 2015-10-26 | 2016-04-20 | 中国石油化工股份有限公司 | Relief valve dismouting replacement detection device |
| CN105806557A (en) * | 2016-05-20 | 2016-07-27 | 北京斯贝克科技有限责任公司 | Valve for on-line verification and calibration of pressure gauge |
| CN208171515U (en) * | 2018-04-09 | 2018-11-30 | 泾阳县睿驰科技有限公司 | The novel mileometer adjustment platform of vehicle gas pressure gauge |
| CN208171591U (en) * | 2018-06-11 | 2018-11-30 | 广西平班水电开发有限公司 | A kind of safety valve inspection dedicated unit |
| CN211344368U (en) * | 2019-06-28 | 2020-08-25 | 江苏核电有限公司 | Low pressure valves power oil pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2020119325A (en) | 2021-12-10 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |