CN114198585A - Length compensator with sealing detection function - Google Patents
Length compensator with sealing detection function Download PDFInfo
- Publication number
- CN114198585A CN114198585A CN202210146403.1A CN202210146403A CN114198585A CN 114198585 A CN114198585 A CN 114198585A CN 202210146403 A CN202210146403 A CN 202210146403A CN 114198585 A CN114198585 A CN 114198585A
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- China
- Prior art keywords
- sealing
- connecting portion
- connecting part
- seal
- ring groove
- 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 title claims abstract description 91
- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 239000000463 material Substances 0.000 claims description 9
- 238000009530 blood pressure measurement Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 7
- 239000004677 Nylon Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 230000000875 corresponding Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 description 9
- 239000004519 grease Substances 0.000 description 9
- 230000001050 lubricating Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 230000003014 reinforcing Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000004642 transportation engineering Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003116 impacting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 230000001702 transmitter Effects 0.000 description 1
Images
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
- F16L51/00—Expansion-compensation arrangements for pipe-lines
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/005—Sealing rings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
Abstract
The invention provides a length compensator with a sealing detection function, which comprises an inner cylinder and an outer cylinder which are respectively in a horizontal column shape, wherein the inner cylinder is inserted into the outer cylinder and is reinforced by a threaded rod and a nut; meanwhile, when one sealing ring fails, other sealing rings continue to seal the pressurized fluid in the pipeline, and the failure condition is timely detected and known through the detection device connected with the sealing detection groove, so that the maintenance time is conveniently provided for users.
Description
Technical Field
The invention relates to the field of fluid measurement and verification, in particular to a length compensator with a sealing detection function.
Background
In the flow measurement and verification process, a large number of flange-connected field instruments and equipment are generally used for parameter measurement and process flow control, such as flow instruments, valves, filters, etc., and in order to ensure the normal operation of the instruments or equipment, the instruments or equipment need to be frequently disassembled for maintenance, repair or detection. Taking a natural gas flow metering system as an example, in a natural gas flow metering process, a flowmeter is frequently required to be detached, maintained/repaired and then sent to a metering and calibrating station for calibration/calibration, and then returned to a natural gas pipeline after calibration/calibration.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a length compensator with a sealing detection function.
In order to achieve the purpose, the invention adopts the following technical scheme:
a length compensator with a sealing detection function comprises an inner cylinder and an outer cylinder which are respectively in a horizontal columnar shape, wherein a first connecting part is arranged on the left side of the inner cylinder, a telescopic inner cylinder is arranged on the right side of the inner cylinder, a telescopic outer cylinder is arranged inside the left side of the outer cylinder, a second connecting part is arranged outside the left side of the outer cylinder, and a third connecting part is arranged on the right side of the outer cylinder; the first connecting part and the third connecting part are respectively connected with two sides of a disconnected pipeline; the size of the telescopic inner cylinder is matched with that of the telescopic outer cylinder, and the telescopic inner cylinder is inserted into the telescopic outer cylinder; the first connecting part and the second connecting part are respectively provided with a plurality of corresponding threaded holes, a threaded rod is arranged to penetrate through the threaded holes and is screwed on the threaded rod through nuts to respectively clamp the first connecting part and the second connecting part; the telescopic outer barrel inner ring is sequentially provided with a dustproof ring groove, a first sealing ring groove, a sealing detection groove and a second sealing ring groove from the left side, a dustproof ring is arranged in the dustproof ring groove, a sealing ring is arranged in the sealing ring groove, the sealing detection groove penetrates through a second connecting portion through a hole to be connected to the outer barrel body outer side and is provided with a sealing detection port, and the outer sealing detection port is provided with a detection device.
Utilize the length compensator to carry out length compensation to the pipeline breach, not only use the sealing washer sealed, still through using the threaded rod, the nut structure is fixed first connecting portion of fixing and second connecting portion, make the reinforcing of the whole withstand voltage ability of compensator, be applicable to high-pressure fluid transportation environment, simultaneously when the sealing washer takes place to become invalid in the second seal ring groove, the fluid is pressed in the sealed pipeline of sealing washer continuation in the first seal ring groove, and can in time detect and learn the inefficacy situation through the detection device who connects sealed detection slot, the convenience provides maintenance duration for the user, improve and use the reliability.
Further, detection device includes root ooff valve, atmospheric relief ooff valve and pressure measurement instrument, the root ooff valve is installed at sealed detection mouth opening part, the atmospheric relief ooff valve sets up between root ooff valve and pressure measurement instrument.
Through pressure measurement instrument in the detection device in time detect and discover the sealing washer inefficacy situation in the second sealing washer groove, in time provide the maintenance, the user can also fill sealing grease, lubricating grease in order to improve the sealing performance and the lubricating performance of sealed face through sealed the detection mouth in addition to sealed, improves and uses the reliability.
Furthermore, the threaded holes arranged on the first connecting portion and the second connecting portion are respectively arranged in a mode that the circle centers of the sections of the inner barrel body and the outer barrel body are centrosymmetric, and the number of the threaded holes arranged on the first connecting portion and the second connecting portion is at least 3.
The screw hole that the symmetric mode set up can be comprehensive carry on spacingly to internal barrel, outer barrel, promotes the compressive property, prevents that the inside fluid of taking pressure of pipeline from leading to the fact the damage to internal barrel, outer barrel impact.
Furthermore, when the nut is screwed on the threaded rod, the length of the threaded rod exposed by the nut on the left side of the first connecting part and the length of the threaded rod exposed by the nut on the right side of the second connecting part are both greater than 0.5cm, the exposed length of the threaded rod is reserved, the nut is prevented from being separated from the threaded rod when fluid with pressure in the pipeline flows, and the reliability of the equipment is improved.
Furthermore, when the threaded rod penetrates through the threaded hole, the nuts are screwed on the left side and the right side of the first connecting portion and the second connecting portion respectively, the nuts are arranged on the two sides, and stretching and contraction of the relative positions of the inner barrel body and the outer barrel body can be limited.
Furthermore, the cross section of the sealing ring is in an X shape, so that the sealing ring has a better sealing effect, and meanwhile, when sealing grease and lubricating grease are filled into the sealing surface through the sealing detection port, the sealing ring has a larger transverse stress surface, so that a better sealing effect is provided for the inner cylinder and the outer cylinder.
Furthermore, the dust ring is made of polytetrafluoroethylene or nylon, so that damage to the sealing ring caused by foreign matters or dirt in the external environment is prevented, and the service life of the dust ring and the sealing ring is prolonged.
Furthermore, first connecting portion, second connecting portion, third connecting portion all are flange, increase between interior barrel, the outer barrel, the intensity of being connected between interior barrel, the outer barrel and the pipeline is applicable to high-pressure environment.
Furthermore, a plurality of sealing grooves can be further formed in the right side of the second sealing ring groove of the inner ring of the telescopic outer barrel, sealing rings are arranged in the sealing grooves, and the sealing effect is improved.
Furthermore, the inner cylinder body and the outer cylinder body are made of high-strength pressure-resistant materials and are suitable for a high-pressure fluid flowing environment.
Compared with the prior art, the invention has the beneficial effects that: (1) the length compensator is used for compensating the length of the pipeline gap, not only is the sealing ring used for sealing, but also the threaded rod and the nut structure are used for fixing the first connecting part and the second connecting part, so that the integral pressure resistance of the compensator is enhanced, and the compensator is suitable for a high-pressure fluid transportation environment; (2) when the sealing ring in the second sealing ring groove fails, the sealing ring in the first sealing ring groove continues to seal the pressurized fluid in the pipeline, and the failure condition can be detected and known in time through a detection device connected with the sealing detection groove, so that the maintenance time can be conveniently provided for a user, and the use reliability can be improved; (3) the user can also fill sealing grease and lubricating grease into the sealing surface through the sealing detection port so as to improve the sealing performance and the lubricating performance of the sealing surface and improve the use reliability; (4) the inner cylinder and the outer cylinder which are symmetrically and bidirectionally fixed can effectively adapt to the flowing environment of the pressurized fluid, and the exposed length of the threaded rod is reserved, so that the nut is prevented from being separated from the threaded rod when the pressurized fluid in the pipeline flows, and the reliability of the equipment is improved; (5) the X-shaped sealing ring is arranged, so that the sealing effect is better, and meanwhile, when sealing grease and lubricating grease are filled into the sealing surface through the sealing detection port, the sealing ring has a larger transverse stress surface, so that the better sealing effect is provided for the inner cylinder body and the outer cylinder body; (6) the dust ring made of polytetrafluoroethylene or nylon prevents foreign matters or dirt in the external environment from damaging the sealing ring, and prolongs the service life of the dust ring and the sealing ring.
Drawings
FIG. 1 is an overall schematic view of embodiment 1 of the present invention;
FIG. 2 is a perspective view of an outer cylinder in accordance with embodiment 1 of the present invention;
FIG. 3 is a schematic view of the connection of the detecting device in embodiment 1 of the present invention;
description of reference numerals: the inner cylinder body 1, the first connecting portion of 11, the flexible inner cylinder of 12, the outer cylinder body of 2, the flexible outer cylinder of 21, 22 second connecting portion, 23 third connecting portion, 31 screw hole, 32 threaded rod, 33 nut, 41 dustproof ring groove, 42 first seal ring groove, 43 sealed detection slot, 44 second seal ring groove, 45 holes, 46 sealed detection mouth, 5 detection device, 51 root switch valve, 52 atmospheric switch valve, 53 pressure measurement instrument.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Embodiment 1, as shown in fig. 1 to 3, a length compensator with a seal detection function includes an inner cylinder 1 and an outer cylinder 2 which are respectively in a horizontal column shape, a first connection portion 11 is provided on the left side of the inner cylinder 1, a telescopic inner cylinder 12 is provided on the right side, a telescopic outer cylinder 21 is provided inside the left side of the outer cylinder 2, a second connection portion 22 is provided outside the left side, and a third connection portion 23 is provided on the right side; the first connecting part 11 and the third connecting part 23 are respectively connected with two sides of a disconnected pipeline; the size of the telescopic inner cylinder 12 is matched with that of the telescopic outer cylinder 21, and the telescopic inner cylinder 12 is inserted into the telescopic outer cylinder 21; the first connecting part 11 and the second connecting part 22 are respectively provided with a plurality of corresponding threaded holes 31, a threaded rod 32 is arranged to penetrate through the threaded holes 31, and the threaded rod 32 is screwed on the threaded rod 32 through a nut 33 to respectively clamp the first connecting part 11 and the second connecting part 22; the inner ring of the telescopic outer cylinder 21 is sequentially provided with a dustproof ring groove 41, a first sealing ring groove 42, a sealing detection groove 43 and a second sealing ring groove 44 from the left side, the dustproof ring is placed in the dustproof ring groove 41, a sealing ring is placed in the sealing ring groove, the sealing detection groove 43 penetrates through the second connecting portion 22 through a hole 45 to be connected to the outer side of the outer cylinder 2 and is provided with a sealing detection port 46, and the outer sealing detection port 46 is provided with a detection device 5.
Interior barrel 1, outer barrel 2 all are the withstand voltage material of high strength, can be applicable to high pressure environment, bear the pressure fluid inside flow, and this device sets up pipeline breach department with the disconnection, or the replenishment is installed in former flowmeter position, or installs jointly between two transport pipe ways with the flowmeter, plays the compensation to the pipeline, fully offsets the length change that high-pressure natural gas pipeline received temperature, pressure and stress influence and takes place.
In the using process, the dustproof ring groove 41, the first sealing ring groove 42 and the second sealing ring groove 44 are firstly put into a dustproof ring or a sealing ring for alignment, the telescopic inner cylinder 12 of the inner cylinder body 1 is inserted into the telescopic outer cylinder 21 of the outer cylinder body 2, the positions are adjusted according to the actual reserved position of the pipeline, the first connecting part 11 and the third connecting part 23 are butted with the two ends of the pipeline, the threaded rod 32 penetrates through the threaded hole 31, and the nut 33 is used for screwing and reinforcing.
In the specific implementation of this embodiment, the detection device 5 includes a root switch valve 51, an emptying switch valve 52 and a pressure measurement instrument 53, the root switch valve 51 is installed at the opening of the seal detection port 46, and the emptying switch valve 52 is disposed between the root switch valve 51 and the pressure measurement instrument 53.
Preferably, in the manual sealing detection system of the present embodiment, the emptying switch valve 52 and the pressure measuring instrument 53 are respectively configured with a conventional pressure gauge and a manual switch valve, so that manual sealing detection can be realized; in the automatic sealing detection system, the emptying switch valve 52 and the pressure measuring instrument 53 adopt a pressure transmitter matched with an electromagnetic switch valve, so that the remote automatic detection of the detection device 5 can be realized.
In the specific implementation of this embodiment, the threaded holes 31 provided in the first connecting portion 11 and the second connecting portion 22 are respectively arranged in a manner of central symmetry with respect to the center of the cross section of the inner cylinder 1 and the center of the cross section of the outer cylinder 2, the number of the threaded holes 31 provided in the first connecting portion 11 and the number of the threaded holes 31 provided in the second connecting portion 22 are respectively at least 3, and the number of the threaded holes 31 provided in the first connecting portion 11 and the second connecting portion 22 is generally 8 to 10.
In this embodiment, when the nut 33 is screwed to the threaded rod 32, the length of the threaded rod 32 exposed from the nut 33 on the left side of the first connecting portion 11 and the length of the threaded rod 32 exposed from the nut 33 on the right side of the second connecting portion 22 are both greater than 0.5 cm.
In general, the threaded rod 32 exposed at the end of the nut 33 has a length of two threads in the industry standard, but in order to prevent the pressurized fluid from impacting the inner cylinder 1 and the outer cylinder 2, a method of increasing the length of the threaded rod 32 exposed at the end of the nut 33 is selected to cope with the pressure of the pressurized fluid and prevent the inner cylinder 1 and the outer cylinder 2 from being separated.
In this embodiment, when the threaded rod 32 is inserted into the threaded hole 31, the nuts 33 are screwed into the left and right sides of the first and second connection portions 11 and 22, respectively.
During this embodiment specific implementation, the cross-section of sealing washer is "X" type form, and conventional sealing washer cross-section is cylindrical, selects the sealing washer of "X" type here, when sealed face of detecting through sealed 46 that detects annotates sealed fat, lubricating grease, the sealing washer has bigger horizontal stress surface, for interior barrel 1, outer barrel 2 provide better sealed effect, receive the extrusion formula at the sealing washer, the sealing washer can be to the up-and-down jack-up in the sealing washer groove to the reinforcing is sealed.
When this embodiment is implemented specifically, polytetrafluoroethylene material or nylon material are used to the dust ring, and polytetrafluoroethylene material or nylon material have better corrosion resistance and longer life, can effectually alleviate the corruption of external environment to the sealing washer through installing the dust ring additional, prolong the life of sealing washer to barrel 1 and outer barrel 2 sealed effect in the reinforcing between.
In this embodiment, the first connecting portion 11, the second connecting portion 22, and the third connecting portion 23 are all connecting flanges.
In the specific implementation of this embodiment, the right side of the second seal ring groove 44 of the inner ring of the telescopic outer cylinder 21 may further be provided with a plurality of seal grooves and seal rings therein, and by providing a plurality of seal ring grooves and providing seal rings in the seal ring grooves, the sealing effect may be more effectively enhanced under the support of the structure of the threaded bolt and the nut 33.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (10)
1. The utility model provides a length compensator of sealed function that detects in area which characterized in that: the device comprises an inner barrel and an outer barrel which are respectively in a horizontal columnar shape, wherein a first connecting part is arranged on the left side of the inner barrel, a telescopic inner barrel is arranged on the right side of the inner barrel, a telescopic outer barrel is arranged inside the left side of the outer barrel, a second connecting part is arranged outside the left side of the outer barrel, and a third connecting part is arranged on the right side of the outer barrel; the first connecting part and the third connecting part are respectively connected with two sides of a disconnected pipeline; the size of the telescopic inner cylinder is matched with that of the telescopic outer cylinder, and the telescopic inner cylinder is inserted into the telescopic outer cylinder; the first connecting part and the second connecting part are respectively provided with a plurality of corresponding threaded holes, a threaded rod is arranged to penetrate through the threaded holes and is screwed on the threaded rod through nuts to respectively clamp the first connecting part and the second connecting part; the utility model discloses a telescopic outer barrel, including telescopic outer barrel, first seal ring groove, sealed detection slot, second seal ring groove, sealing detection slot, the sealing of inner circle of telescopic outer barrel sets gradually dustproof ring groove, first seal ring groove, sealed detection slot, second seal ring groove from the left side, put into in the dustproof ring groove at the dustproof ring, put into the sealing washer in first seal ring groove, the second seal ring groove, sealed detection slot pierces through the hole second connecting portion and is connected to the outer barrel outside and sets up sealed detection mouth, outside sealed detection mouth department sets up detection device.
2. The length compensator with seal detection function according to claim 1, wherein: the detection device comprises a root switch valve, an emptying switch valve and a pressure measurement instrument, wherein the root switch valve is arranged at the opening of the sealed detection port, and the emptying switch valve is arranged between the root switch valve and the pressure measurement instrument.
3. The length compensator with seal detection function according to claim 1, wherein: the threaded holes arranged on the first connecting portion and the second connecting portion are respectively arranged in a mode that the circle centers of the sections of the inner barrel and the outer barrel are centrosymmetric, and the number of the threaded holes arranged on the first connecting portion and the second connecting portion is at least 3.
4. The length compensator with seal detection function according to claim 1, wherein: when the nut is screwed on the threaded rod, the length of the threaded rod exposed by the nut on the left side of the first connecting part and the length of the threaded rod exposed by the nut on the right side of the second connecting part are both greater than 0.5 cm.
5. The length compensator with seal detection function according to claim 1, wherein: when the threaded rod penetrates through the threaded hole, nuts are screwed on the left side and the right side of the first connecting portion and the second connecting portion respectively.
6. The length compensator with seal detection function according to claim 1, wherein: the section of the sealing ring is in an X shape.
7. The length compensator with seal detection function according to claim 1, wherein: the dust ring is made of polytetrafluoroethylene materials or nylon materials.
8. The length compensator with seal detection function according to claim 1, wherein: the first connecting portion, the second connecting portion and the third connecting portion are all connecting flanges.
9. The length compensator with seal detection function according to claim 1, wherein: the right side of the second sealing ring groove of the inner ring of the telescopic outer barrel can be also provided with a plurality of sealing grooves and sealing rings inside.
10. The length compensator with seal detection function according to claim 1, wherein: the inner cylinder body and the outer cylinder body are made of high-strength pressure-resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210146403.1A CN114198585A (en) | 2022-02-17 | 2022-02-17 | Length compensator with sealing detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210146403.1A CN114198585A (en) | 2022-02-17 | 2022-02-17 | Length compensator with sealing detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114198585A true CN114198585A (en) | 2022-03-18 |
Family
ID=80645626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210146403.1A Pending CN114198585A (en) | 2022-02-17 | 2022-02-17 | Length compensator with sealing detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114198585A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857392A (en) * | 2022-04-24 | 2022-08-05 | 江苏奥光波纹管有限公司 | Bypass straight pipe pressure balance type compensator with pressure detection function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2239314A1 (en) * | 1972-08-10 | 1974-02-21 | Hartmut Soehle | SAFETY FLANGE |
| CN2151341Y (en) * | 1993-02-03 | 1993-12-29 | 四川石油管理局勘察设计研究院 | Elastic expansion pipe |
| JPH084961A (en) * | 1994-06-22 | 1996-01-12 | Nishihara Eisei Kogyosho:Kk | Dimension adjusting pipe joint |
| CN101694259A (en) * | 2009-09-28 | 2010-04-14 | 江苏亿丰机械制造有限公司 | Maintenance-free bidirectional rotary compensator |
| CN201779369U (en) * | 2010-07-23 | 2011-03-30 | 洛阳双瑞特种装备有限公司 | Double-layer corrugated pipe with leakage monitoring function |
| US20110186305A1 (en) * | 2010-01-29 | 2011-08-04 | Optimum Production Technologies Inc. | Gas-blanketed piping connections |
| CN202612845U (en) * | 2012-05-14 | 2012-12-19 | 株洲新奥燃气有限公司 | Bleeder connecting component |
| CN207777865U (en) * | 2017-11-08 | 2018-08-28 | 航天晨光股份有限公司 | A kind of pressure-balancing type sleeve expansion joint having leakage monitoring function |
| CN209354844U (en) * | 2018-12-20 | 2019-09-06 | 吴俊霖 | A kind of high temperature resistant non-metal compensator |
| CN210600644U (en) * | 2019-07-19 | 2020-05-22 | 福建福清核电有限公司 | Double-layer metal expansion joint online leakage monitoring device |
| CN111656075A (en) * | 2018-01-29 | 2020-09-11 | 瓦锡兰芬兰有限公司 | Flange assembly |
| CN212616918U (en) * | 2020-06-23 | 2021-02-26 | 浙江佳力科技股份有限公司 | Expansion joint for connecting pump test pipeline |
-
2022
- 2022-02-17 CN CN202210146403.1A patent/CN114198585A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2239314A1 (en) * | 1972-08-10 | 1974-02-21 | Hartmut Soehle | SAFETY FLANGE |
| CN2151341Y (en) * | 1993-02-03 | 1993-12-29 | 四川石油管理局勘察设计研究院 | Elastic expansion pipe |
| JPH084961A (en) * | 1994-06-22 | 1996-01-12 | Nishihara Eisei Kogyosho:Kk | Dimension adjusting pipe joint |
| CN101694259A (en) * | 2009-09-28 | 2010-04-14 | 江苏亿丰机械制造有限公司 | Maintenance-free bidirectional rotary compensator |
| US20110186305A1 (en) * | 2010-01-29 | 2011-08-04 | Optimum Production Technologies Inc. | Gas-blanketed piping connections |
| CN201779369U (en) * | 2010-07-23 | 2011-03-30 | 洛阳双瑞特种装备有限公司 | Double-layer corrugated pipe with leakage monitoring function |
| CN202612845U (en) * | 2012-05-14 | 2012-12-19 | 株洲新奥燃气有限公司 | Bleeder connecting component |
| CN207777865U (en) * | 2017-11-08 | 2018-08-28 | 航天晨光股份有限公司 | A kind of pressure-balancing type sleeve expansion joint having leakage monitoring function |
| CN111656075A (en) * | 2018-01-29 | 2020-09-11 | 瓦锡兰芬兰有限公司 | Flange assembly |
| CN209354844U (en) * | 2018-12-20 | 2019-09-06 | 吴俊霖 | A kind of high temperature resistant non-metal compensator |
| CN210600644U (en) * | 2019-07-19 | 2020-05-22 | 福建福清核电有限公司 | Double-layer metal expansion joint online leakage monitoring device |
| CN212616918U (en) * | 2020-06-23 | 2021-02-26 | 浙江佳力科技股份有限公司 | Expansion joint for connecting pump test pipeline |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857392A (en) * | 2022-04-24 | 2022-08-05 | 江苏奥光波纹管有限公司 | Bypass straight pipe pressure balance type compensator with pressure detection function |
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