CN110748724A - Installation method of sealing valve - Google Patents
Installation method of sealing valve Download PDFInfo
- Publication number
- CN110748724A CN110748724A CN201910912225.7A CN201910912225A CN110748724A CN 110748724 A CN110748724 A CN 110748724A CN 201910912225 A CN201910912225 A CN 201910912225A CN 110748724 A CN110748724 A CN 110748724A
- Authority
- CN
- China
- Prior art keywords
- sealing
- ring
- valve
- flange
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/24—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same mounting or demounting valves
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Valve Housings (AREA)
Abstract
A method for installing a sealing valve specifically comprises the following steps: drilling the installation position through drilling equipment, and removing liquid in the pipeline; respectively fixing a pair of flanges on the cut pipelines; the first sealing ring is sleeved on the mounting ring in an interference fit manner and is close to the annular block on the outer side of the inner part of the mounting ring, the mounting ring is externally threaded on the fixing ring fixed on one side of the flange, and the edge of the fixing ring and the annular block tightly press the first sealing ring to realize one-layer sealing; then a second sealing ring is sleeved in an annular groove formed by the flange fixing ring and the circumferential edge of the flange in an interference fit manner, a sealing cover is connected to the outer side of an annular block on the mounting ring in a threaded manner, one end of the sealing cover is positioned in the annular groove and props against the second sealing ring, so that two-layer sealing is realized, and the assembly of the sealing valve is completed; the installation method of the sealing valve is simple to operate, double-layer sealing of the pipeline and the valve main body is achieved, and sealing performance is better.
Description
Technical Field
The invention relates to the field of valves, in particular to a method for installing a sealing valve.
Background
The traditional pipeline installation valve is mainly connected through flange butt joint and threads, the flanges are mainly welded and arranged on the pipeline in the flange butt joint mode, the sealing rings are arranged between the flanges and are screwed and fixed through screws, liquid seepage is easily caused when the method is used for a long time, particularly, the flanges are mainly welded and arranged on the pipeline in the flange butt joint mode under a high-pressure environment, the pipeline or the flanges are easily deformed at high temperature, assembly gaps are caused, and sealing is affected; the threaded connection mode can realize tight connection, but is easy to rust after long-time use, so that the disassembly is troublesome.
Disclosure of Invention
The invention provides an installation method of a sealing valve, which is simple to operate, realizes double-layer sealing of a pipeline and a valve main body and has better sealing performance.
In order to achieve the purpose, the installation method of the sealing valve specifically comprises the following steps:
(1) closing the valve switches at two sides close to the pipeline installation valve, drilling the installation position through drilling equipment, and removing liquid in the pipeline;
(2) cutting the pipeline, polishing and removing slag at the cutting position, fixing a pair of flanges on the cut pipeline respectively, and placing the valve main body at the cutting position, wherein two sides of the valve main body are fixedly connected with the mounting ring respectively;
(3) the first sealing ring is sleeved on the mounting ring in an interference fit manner and is close to the annular block on the outer side of the inner part of the mounting ring, the mounting ring is externally threaded on the fixing ring fixed on one side of the flange, and the edge of the fixing ring and the annular block tightly press the first sealing ring to realize one-layer sealing;
(4) and then the second sealing ring is sleeved in an annular groove formed by the flange fixing ring and the circumferential edge of the flange in an interference fit manner, the sealing cover is in threaded connection with the outer side of the annular block on the mounting ring, one end of the sealing cover is positioned in the annular groove and props against the second sealing ring, two-layer sealing is realized, and the assembly of the sealing valve is completed.
Furthermore, the surfaces of the mounting ring, the flange, the annular block and the fixing ring are galvanized.
Further, the direction of the thread on the fixing ring is opposite to the direction of the thread on the annular block.
Further, the flange is welded on the pipeline.
Furthermore, the threaded connection part of the mounting ring and the fixing ring, and the threaded connection part of the sealing cover and the annular block are provided with thread tapes.
Compared with the prior art, the installation method of the sealing valve has the advantages that liquid left in the pipeline is cleaned firstly, and the cutting is subjected to slag removal treatment, so that pollution to the interior of the pipeline caused by installation is avoided; fixing a flange on a pipeline, arranging a second sealing ring on the mounting ring in an interference fit manner, propping against the annular block, and assembling the mounting ring threads with the fixing ring on the flange through threaded connection, so that the fixing ring props against the second sealing ring to realize one-layer sealing; then, the first sealing ring is arranged in the annular groove in an interference fit manner, the sealing cover is in threaded connection with the annular block, and one end of the sealing cover is positioned in the annular groove and props against the first sealing ring, so that two-layer sealing is realized; the installation method of the sealing valve is simple to operate, double-layer sealing of the pipeline and the valve main body is achieved, and sealing performance is better.
Detailed Description
The installation method of the sealing valve specifically comprises the following steps:
(1) closing the valve switches at two sides close to the pipeline installation valve, drilling the installation position through drilling equipment, and removing liquid in the pipeline; the liquid can be collected into the collecting device through the drill hole, and impurities contained in the liquid are removed through a filtering device such as a magnetic removing device and the like, so that the recovery treatment is convenient;
(2) cutting the pipeline, polishing and removing slag at the cutting position, fixing a pair of flanges on the cut pipeline respectively, and placing the valve main body at the cutting position, wherein two sides of the valve main body are fixedly connected with the mounting ring respectively; by passing
(3) The first sealing ring is sleeved on the mounting ring in an interference fit manner and is close to the annular block on the outer side of the inner part of the mounting ring, the mounting ring is externally threaded on the fixing ring fixed on one side of the flange, and the edge of the fixing ring and the annular block tightly press the first sealing ring to realize one-layer sealing;
(4) and then the second sealing ring is sleeved in an annular groove formed by the flange fixing ring and the circumferential edge of the flange in an interference fit manner, the sealing cover is in threaded connection with the outer side of the annular block on the mounting ring, one end of the sealing cover is positioned in the annular groove and props against the second sealing ring, two-layer sealing is realized, and the assembly of the sealing valve is completed.
Further, the surfaces of the mounting ring, the flange, the annular block and the fixing ring are galvanized; therefore, the parts are effectively protected, and the situations of rusting and the like in long-time use are avoided.
Further, the direction of the thread on the fixing ring is opposite to that of the thread on the annular block; through the arrangement of the mutually opposite threads, when the thread connection of the fixing ring is firstly carried out and then the thread connection of the annular blocks is carried out, the annular blocks are paired
Further, the flange is welded on the pipeline; when the flange is welded on a pipeline and deforms, the mounting ring is in threaded connection with the fixing ring and is provided with the first sealing ring, the sealing cover is in threaded connection with the annular block and is provided with the second sealing ring, double-layer sealing is adopted, the situation of large gap generated by assembly is avoided, and errors are reduced;
furthermore, the threaded connection part of the mounting ring and the a fixing ring and the threaded connection part of the sealing cover and the annular block are provided with thread tapes.
Claims (5)
1. The mounting method of the sealing valve is characterized by comprising the following steps:
(1) closing the valve switches at two sides close to the pipeline installation valve, drilling the installation position through drilling equipment, and removing liquid in the pipeline;
(2) cutting the pipeline, polishing and removing slag at the cutting position, fixing a pair of flanges on the cut pipeline respectively, and placing the valve main body at the cutting position, wherein two sides of the valve main body are fixedly connected with the mounting ring respectively;
(3) the first sealing ring is sleeved on the mounting ring in an interference fit manner and is close to the annular block on the outer side of the inner part of the mounting ring, the mounting ring is externally threaded on the fixing ring fixed on one side of the flange, and the edge of the fixing ring and the annular block tightly press the first sealing ring to realize one-layer sealing;
(4) and then the second sealing ring is sleeved in an annular groove formed by the flange fixing ring and the circumferential edge of the flange in an interference fit manner, the sealing cover is in threaded connection with the outer side of the annular block on the mounting ring, one end of the sealing cover is positioned in the annular groove and props against the second sealing ring, two-layer sealing is realized, and the assembly of the sealing valve is completed.
2. The method of claim 1, wherein the surfaces of the mounting ring, the flange, the ring block, and the retaining ring are galvanized.
3. A method of installing a sealing valve as claimed in claim 1 or claim 2, wherein the direction of the thread on the retaining ring is opposite to the direction of the thread on the annular block.
4. A method of installing a sealed valve according to claim 1, wherein the flange is welded to the pipe.
5. The method for installing the sealing valve as claimed in claim 1, wherein the threaded connection between the mounting ring and the fixing ring and the threaded connection between the sealing cover and the annular block are provided with thread tapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910912225.7A CN110748724A (en) | 2019-09-25 | 2019-09-25 | Installation method of sealing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910912225.7A CN110748724A (en) | 2019-09-25 | 2019-09-25 | Installation method of sealing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110748724A true CN110748724A (en) | 2020-02-04 |
Family
ID=69277070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910912225.7A Pending CN110748724A (en) | 2019-09-25 | 2019-09-25 | Installation method of sealing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110748724A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201723814U (en) * | 2010-07-26 | 2011-01-26 | 苏州工业园区思达德阀门有限公司 | Short threaded connection ball valve |
| CN103574197A (en) * | 2013-11-14 | 2014-02-12 | 天津市雪琰管业有限公司 | Weldable steel flange with embedded O-shaped sealing rings |
| CN207687512U (en) * | 2018-01-03 | 2018-08-03 | 张娜 | A kind of hot-water heating piece weld assembly |
| CN108468827A (en) * | 2018-06-29 | 2018-08-31 | 中山弗雷德机械有限公司 | A kind of full flow lustration type ball valve connection sealing element |
| CN108506551A (en) * | 2018-06-29 | 2018-09-07 | 中山弗雷德机械有限公司 | A kind of ball valve quick coupling strong with sealing performance |
| CN108612931A (en) * | 2018-07-24 | 2018-10-02 | 南通永大管业股份有限公司 | A kind of double containment assembling pipe joint |
| CN208090107U (en) * | 2018-02-06 | 2018-11-13 | 兴义港华燃气有限公司 | A kind of natural gas line sealing and connecting device |
-
2019
- 2019-09-25 CN CN201910912225.7A patent/CN110748724A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201723814U (en) * | 2010-07-26 | 2011-01-26 | 苏州工业园区思达德阀门有限公司 | Short threaded connection ball valve |
| CN103574197A (en) * | 2013-11-14 | 2014-02-12 | 天津市雪琰管业有限公司 | Weldable steel flange with embedded O-shaped sealing rings |
| CN207687512U (en) * | 2018-01-03 | 2018-08-03 | 张娜 | A kind of hot-water heating piece weld assembly |
| CN208090107U (en) * | 2018-02-06 | 2018-11-13 | 兴义港华燃气有限公司 | A kind of natural gas line sealing and connecting device |
| CN108468827A (en) * | 2018-06-29 | 2018-08-31 | 中山弗雷德机械有限公司 | A kind of full flow lustration type ball valve connection sealing element |
| CN108506551A (en) * | 2018-06-29 | 2018-09-07 | 中山弗雷德机械有限公司 | A kind of ball valve quick coupling strong with sealing performance |
| CN108612931A (en) * | 2018-07-24 | 2018-10-02 | 南通永大管业股份有限公司 | A kind of double containment assembling pipe joint |
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