CN101858472A - Pressure-meeting equalizer-free stopper - Google Patents
Pressure-meeting equalizer-free stopper Download PDFInfo
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- CN101858472A CN101858472A CN 201010156360 CN201010156360A CN101858472A CN 101858472 A CN101858472 A CN 101858472A CN 201010156360 CN201010156360 CN 201010156360 CN 201010156360 A CN201010156360 A CN 201010156360A CN 101858472 A CN101858472 A CN 101858472A
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Abstract
The invention relates to the technical field of low-pressure pipeline under-pressure plugging devices, and provides a pressure-meeting equalizer-free stopper, which comprises a connecting shell, a hydraulic cylinder, a connecting rod, a plug seat, a plug rotating shaft and a plug. The lower end of the connecting shell is provided with a fixing flange and can be fixedly arranged on a maintenance hole of a pipeline through a sandwich valve; the upper end of the connecting shell is provided with the hydraulic cylinder; a connecting shell cavity is formed in the connecting shell; the plug seat is arranged in the connecting shell cavity; the plug is hinged to the plug seat through the plug rotating shaft and can rotate by meeting the flow direction of liquid in the pipeline so as to realize plugging; and a plugging cup is arranged on the plug. The pressure-meeting equalizer-free stopper has the advantages of reasonable and compact structure and convenient use, does not need an equalizer, can realize the plugging through the plug rotating by meeting the pressure, obviously improves the plugging performance of the plug through a large-diameter rear sandwich, the plugging cup with an external sealing lip and a cushion block capable of lifting the plugging cup, and has the characteristics of safety, labor saving, simpleness, convenience, and high efficiency.
Description
One, technical field
The present invention relates to low pressure pipeline non-stop plugging device technique field, is a kind of pressure-meeting equalizer-free stopper.
Two, background technique
In the repairing of pipeline or when connecting, for the ease of quick organizing construction, often need immediately pipeline to be implemented shutoff, at present general normal employing pipeline machinery non-stop plugging technology is carried out shutoff to pipeline, because it has that feasibility is good, safety, economy, rapidly and efficiently, be usually used in jobs that requires special skills such as the maintenance of in-service pipeline and repairing.Pipeline machinery non-stop plugging, be exactly when pipe laying, install the shutoff threeway that has service hatch and sandwich valve in advance between two segment pipes, sandwich valve is installed in the outlet of service hatch, the sandwich valve of cutting out has sealed service hatch, makes pipeline can keep sealing proper functioning; When needs shutoff operation, on sandwich valve, install plugging device, be connected with a block head that can turn to by connecting rod on the plugging device, by connecting rod block head is sent to pipe interior from service hatch after opening sandwich valve, turn to behind the inwall of block head contact pipeline then, the inwall of block head after turning to by its anterior rubber cup and pipeline fits tightly and keeps sealing, and the inner chamber of pipeline blocks fully the most at last; When needs cancellation shutoff, only need block head to be mentioned withdrawal and make pipeline recover unimpeded by connecting rod, behind the last closed clip plate valve, can take off plugging device.But existing plugging device has the following disadvantages in actual use: because block head is that the flow direction of liquid is rotated and realized shutoff in pipeline, must on the pipeline in plugging device the place ahead, equalizer be installed, make the fluid pressure balance at block head two ends by equalizer after, block head can be mentioned withdrawal, and the installation of equalizer whole system is comparatively wasted time and energy, not only reduced the efficient of construction, and can stay place's pipe nipple plug on pipeline, the possibility that causes pipeline leak source to occur increases.
Three, summary of the invention
The invention provides a kind of pressure-meeting equalizer-free stopper, must supporting installation equalizer, installation steps complexity when it has solved existing plugging device and uses, understand and in pipeline, stay the pipe nipple plug and have the problem of leaking hidden danger.
Technological scheme of the present invention realizes by following measure: a kind of pressure-meeting equalizer-free stopper, comprise the connection housing, oil hydraulic cylinder, connecting rod, the plug seat, plug rotating shaft and block head, the lower end that connects housing has fastening flange also can be fixedly mounted on the service hatch of pipeline by sandwich valve, the upper end that connects housing is equipped with oil hydraulic cylinder, there is the housing of connection tube chamber the inside that connects housing, the plug seat is installed in to connect in the housing tube chamber and also can moves up and down, the piston rod of oil hydraulic cylinder extend into to connect in the housing tube chamber and by the upper end of connecting rod with the plug seat and is connected, block head is hinged on the plug seat by the plug rotating shaft and can rotates to realize shutoff in face of flow direction in the pipeline, has the outside to fit tightly with inner-walls of duct on the block head and the rim of a bowl portion meets the shutoff leather cup of the pressure direction of liquid in pipeline.
Be further optimization and/or improvements below to the foregoing invention technological scheme:
Above-mentioned block head can comprise pivoted arm, rear plate, front plate, shutoff leather cup, guiding trestle and upper saw pulley; One end of pivoted arm has the plug rotary shaft hole and is installed in the plug rotating shaft, the other end of pivoted arm is fixed with rear plate, external diameter is installed on the rear plate by screw less than the front plate of rear plate external diameter, be installed with the shutoff leather cup between rear plate and the front plate, the front side of front plate is fixed with guiding trestle, and the front end of guiding trestle is equipped with the upper saw pulley that can freely rotate.
Above-mentioned shutoff leather cup can comprise leather cup body and outer seal lip, the leather cup body comprises circular connecting plate and sealing outer rim, the middle part of leather cup body is circular connecting plate, the outside of circular connecting plate is connected with the sealing outer rim, the outer side surface of sealing outer rim is a cone surface of bit left small and right large, sealing outer rim right side has stretches to the outside, sealing outer rim the right and the rigidity outer seal lip greater than the sealing outer rim, the inner of outer seal lip and circular connecting plate are connected as a single entity, and form the V-ring sky between the left surface of the right flank of outer seal lip and sealing outer rim.
Can be fixed with on the above-mentioned plug seat and can prevent that block head from departing from the block that connects the housing shaft line position because of fluid pressure left-hand in the pipeline.
Above-mentioned rear plate lower end can be fixed with can raise the cushion block that the shutoff leather cup makes shutoff leather cup center overlap with conduit axis.
Can be fixed with away from a side of flow direction in the pipeline on the above-mentioned plug seat and can prevent that the plug seat from colliding the support block of service hatch because of fluid pressure in the pipeline.
The left surface of above-mentioned V-ring sky and the angle of right flank can be 12 degree, the right flank of sealing outer rim and the angle between the cone surface of bit can be 30 degree, the right flank of outer seal lip and the right flank of circular connecting plate can form 160 degree angles, the left surface of outer seal lip and the right flank of outer seal lip can form 24 degree angles, there is the outer lip end face outer end of outer seal lip, the right flank of outer lip end face and outer seal lip can form 63 degree angles, and the left end of outer lip end face can be 5 millimeters with the distance of sealing outer rim right-hand member.
Reasonable and compact in structure of the present invention, easy to use, it does not need supporting installation equalizer, press the block head that rotates just can realize shutoff by meeting, and the rear plate by big external diameter, the cushion block that has the shutoff leather cup of outer seal lip and can raise the shutoff leather cup significantly improved the sealing characteristics of block head, has safe, laborsaving, easy, characteristics of high efficiency.
Four, description of drawings
Accompanying drawing 1 is looked the sectional structure schematic representation for the master of most preferred embodiment of the present invention.
Accompanying drawing 2 is looked the structure for amplifying schematic representation for the master of the block head in the accompanying drawing 1.
Accompanying drawing 3 is looked the sectional structure schematic representation for the master of shutoff leather cup when nature in the accompanying drawing 2.
Accompanying drawing 4 is the left TV structure schematic representation of accompanying drawing 2.
Accompanying drawing 5 is the local structure for amplifying schematic representation at A place in the accompanying drawing 3.
The master in working order the time looks the sectional structure schematic representation for the shutoff leather cup in the accompanying drawing 2 for accompanying drawing 6.
Coding in the accompanying drawing is respectively: 1 for connecting housing, and 2 is oil hydraulic cylinder, and 3 is connecting rod, and 4 is the plug seat, 5 is the plug rotating shaft, and 6 is fastening flange, and 7 is sandwich valve, and 8 is service hatch, 9 for connecting the housing tube chamber, and 10 are the shutoff leather cup, and 11 is pivoted arm, and 12 is rear plate, 13 is front plate, and 14 is guiding trestle, and 15 is upper saw pulley, and 16 is outer seal lip, 17 is circular connecting plate, and 18 are the sealing outer rim, and 19 is cone surface of bit, and 20 is the V-ring sky, 21 is block, and 22 is cushion block, and 23 is support block, and 24 is the outer lip end face.
Five, embodiment
The present invention is not subjected to following embodiment's restriction, can determine concrete mode of execution according to technological scheme of the present invention and actual conditions.
Below in conjunction with most preferred embodiment and accompanying drawing the present invention is further described:
As shown in Figure 1, this pressure-meeting equalizer-free stopper comprises connection housing 1, oil hydraulic cylinder 2, connecting rod 3, plug seat 4, plug rotating shaft 5 and block head, the lower end that connects housing 1 has fastening flange 6 also can be fixedly mounted on the service hatch 8 of pipeline by sandwich valve 7, the upper end that connects housing 1 is equipped with oil hydraulic cylinder 2, there is the housing of connection tube chamber 9 inside that connects housing 1, plug seat 4 is installed in to connect in the housing tube chamber 9 and also can moves up and down, the piston rod of oil hydraulic cylinder 2 extend into to connect in the housing tube chamber 9 and by the upper end of connecting rod 3 with plug seat 4 and is connected, block head is hinged on the plug seat 4 by plug rotating shaft 5 and can rotates to realize shutoff in face of flow direction in the pipeline, has the outside to fit tightly with inner-walls of duct on the block head and the rim of a bowl portion meets the shutoff leather cup 10 of the pressure direction of liquid in pipeline.Since block head when reclaiming in the suffered pipeline pressure of liquid consistent with travel direction, block head reclaims comparatively smooth and easy, do not need to install original supporting equalizer and just can mention withdrawal smoothly, and, also reduced the hidden danger of leaking owing to do not change original pipeline.
Can according to actual needs above-mentioned pressure-meeting equalizer-free stopper be made further optimization and/or improvements:
As shown in Figure 2, block head comprises pivoted arm 11, rear plate 12, front plate 13, shutoff leather cup 10, guiding trestle 14 and upper saw pulley 15; One end of pivoted arm 11 has the plug rotary shaft hole and is installed in the plug rotating shaft 5, the other end of pivoted arm 11 is fixed with rear plate 12, external diameter is installed on the rear plate 12 by screw less than the front plate 13 of rear plate 12 external diameters, be installed with shutoff leather cup 10 between rear plate 12 and the front plate 13, the front side of front plate 13 is fixed with guiding trestle 14, and the front end of guiding trestle 14 is equipped with the upper saw pulley 15 that can freely rotate.The external diameter of rear plate 12 can realize meeting the pressure direction shutoff better greater than the external diameter of front plate 13.By at the front side of front plate 13 stator wheel 15, can be convenient to block head around plug rotating shaft 5 rotations, with smooth arrival working position.
As accompanying drawing 3, shown in 6, shutoff leather cup 10 comprises leather cup body and outer seal lip 16, the leather cup body comprises circular connecting plate 17 and sealing outer rim 18, the middle part of leather cup body is circular connecting plate 17, the outside of circular connecting plate 17 is connected with sealing outer rim 18, the outer side surface of sealing outer rim 18 is a cone surface of bit 19 left small and right large, sealing outer rim 18 right sides have stretches to the outside, sealing outer rim 18 the right and the rigidity outer seal lip 16 greater than sealing outer rim 18, the inner of outer seal lip 16 and circular connecting plate 17 are connected as a single entity, and form V-ring sky 20 between the left surface of the right flank of outer seal lip 16 and sealing outer rim 18.V-ring sky 20 makes sealing outer rim 18 that bigger deformation space be arranged, and the rigidity of outer seal lip 16 can play the radial support effect to sealing outer rim 18 in the back that is squeezed greater than sealing outer rim 18, thereby can significantly improve the sealability to pipeline.The external diameter of outer seal lip 16 is bigger than the external diameter of leather cup body, and outer seal lip 16 is that one of percentage of internal diameter of the pipeline is to 2 percent with respect to the magnitude of interference of the internal diameter of the pipeline of its shutoff.
As shown in Figure 1, be fixed with on the plug seat 4 and can prevent that block head from connecting the block 21 of housing 1 axial location because of fluid pressure left-hand in the pipeline departs from.The block head backward rotation that fluid pressure caused in the pipeline when block 21 can prevent shutoff makes block head realize shutoff smoothly in face of the flow direction rotation of liquid in the pipeline.
As shown in Figure 4, rear plate 12 lower ends are fixed with and can raise the cushion block 22 that shutoff leather cup 10 makes shutoff leather cup 10 centers overlap with conduit axis.Because the weight of block head self is bigger, the center that can sink to making rear plate 12, shutoff leather cup 10 and front plate 13 because of gravity than the conduit axis position on the lower side, shutoff leather cup 10 upper ends then poor sealing can occur.Cushion block 22 can prevent to produce the leak of liquid that sinks to causing because of the block head self gravitation.
As shown in Figure 1, be fixed with away from a side of flow direction in the pipeline on the plug seat 4 and can prevent that plug seat 4 from colliding the support block 23 of service hatch 8 because of fluid pressure in the pipeline.Plug seat 4 swings that fluid pressure caused in the pipeline when support block 23 can prevent shutoff avoid plug seat 4 and service hatch 8 to damage because of collision.
As shown in Figure 5, the left surface of V-ring sky 20 and the angle of right flank are 12 degree, the right flank of sealing outer rim 18 and the angle between the cone surface of bit 19 are 30 degree, the right flank of the right flank of outer seal lip 16 and circular connecting plate 17 forms 160 degree angles, the right flank of the left surface of outer seal lip 16 and outer seal lip 16 forms 24 degree angles, there is outer lip end face 24 outer end of outer seal lip 16, outer lip end face 24 forms 63 degree angles with the right flank of outer seal lip 16, and the left end of outer lip end face 24 is 5 millimeters with the distance of sealing outer rim 18 right-hand members.12 degree angles of empty 20 left surfaces of V-ring and right flank make sealing outer rim 18 that suitable deformation space be arranged, and outer seal lip 16 has suitable rigidity again simultaneously; 30 degree angles between sealing outer rim 18 right flanks and the cone surface of bit 19 make sealing outer rim 18 that suitable elasticity and flexibility be arranged; After 160 degree angles of outer seal lip 16 right flanks and circular connecting plate 17 right flanks make outer seal lip 16 pressurizeds comparatively suitable amount of deformation is arranged; 24 degree angles of the left surface of outer seal lip 16 and right flank make outer seal lip 16 that comparatively suitable rigidity be arranged; Outer lip end face 24 left ends make not cracky of outer seal lip 16 outer ends with the spacing of sealing outer rim 18 right-hand members, simultaneously it are had guiding function when the pipeline inner bending is out of shape.
Above technical characteristics has constituted most preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristics according to actual needs, satisfies the demand of different situations.
Claims (10)
1. pressure-meeting equalizer-free stopper, it is characterized in that comprising the connection housing, oil hydraulic cylinder, connecting rod, the plug seat, plug rotating shaft and block head, the lower end that connects housing has fastening flange also can be fixedly mounted on the service hatch of pipeline by sandwich valve, the upper end that connects housing is equipped with oil hydraulic cylinder, there is the housing of connection tube chamber the inside that connects housing, the plug seat is installed in to connect in the housing tube chamber and also can moves up and down, the piston rod of oil hydraulic cylinder extend into to connect in the housing tube chamber and by the upper end of connecting rod with the plug seat and is connected, block head is hinged on the plug seat by the plug rotating shaft and can rotates to realize shutoff in face of flow direction in the pipeline, has the outside to fit tightly with inner-walls of duct on the block head and the rim of a bowl portion meets the shutoff leather cup of the pressure direction of liquid in pipeline.
2. pressure-meeting equalizer-free stopper according to claim 1 is characterized in that block head comprises pivoted arm, rear plate, front plate, shutoff leather cup, guiding trestle and upper saw pulley; One end of pivoted arm has the plug rotary shaft hole and is installed in the plug rotating shaft, the other end of pivoted arm is fixed with rear plate, external diameter is installed on the rear plate by screw less than the front plate of rear plate external diameter, be installed with the shutoff leather cup between rear plate and the front plate, the front side of front plate is fixed with guiding trestle, and the front end of guiding trestle is equipped with the upper saw pulley that can freely rotate.
3. pressure-meeting equalizer-free stopper according to claim 1 and 2, it is characterized in that the shutoff leather cup comprises leather cup body and outer seal lip, the leather cup body comprises circular connecting plate and sealing outer rim, the middle part of leather cup body is circular connecting plate, the outside of circular connecting plate is connected with the sealing outer rim, the outer side surface of sealing outer rim is a cone surface of bit left small and right large, sealing outer rim right side has stretches to the outside, sealing outer rim the right and the rigidity outer seal lip greater than the sealing outer rim, the inner of outer seal lip and circular connecting plate are connected as a single entity, and form the V-ring sky between the left surface of the right flank of outer seal lip and sealing outer rim.
4. pressure-meeting equalizer-free stopper according to claim 1 and 2 is characterized in that being fixed with on the plug seat and can prevent that block head from connecting the block of housing shaft line position because of fluid pressure left-hand in the pipeline departs from.
5. pressure-meeting equalizer-free stopper according to claim 3 is characterized in that being fixed with on the plug seat and can prevent that block head from connecting the block of housing shaft line position because of fluid pressure left-hand in the pipeline departs from.
6. pressure-meeting equalizer-free stopper according to claim 1 and 2 is characterized in that the rear plate lower end is fixed with can raise the cushion block that the shutoff leather cup makes shutoff leather cup center overlap with conduit axis.
7. pressure-meeting equalizer-free stopper according to claim 5 is characterized in that the rear plate lower end is fixed with can raise the cushion block that the shutoff leather cup makes shutoff leather cup center overlap with conduit axis.
8. pressure-meeting equalizer-free stopper according to claim 6 is characterized in that on the plug seat that a side away from flow direction in the pipeline is fixed with can prevent that the plug seat from colliding the support block of service hatch because of fluid pressure in the pipeline.
9. pressure-meeting equalizer-free stopper according to claim 7 is characterized in that on the plug seat that a side away from flow direction in the pipeline is fixed with can prevent that the plug seat from colliding the support block of service hatch because of fluid pressure in the pipeline.
10. pressure-meeting equalizer-free stopper according to claim 8, it is characterized in that the left surface of V-ring sky and the angle of right flank are 12 degree, the right flank of sealing outer rim and the angle between the cone surface of bit are 30 degree, the right flank of outer seal lip and the right flank of circular connecting plate form 160 degree angles, the left surface of outer seal lip and the right flank of outer seal lip form 24 degree angles, there is the outer lip end face outer end of outer seal lip, the right flank of outer lip end face and outer seal lip forms 63 degree angles, and the left end of outer lip end face is 5 millimeters with the distance of sealing outer rim right-hand member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010156360 CN101858472B (en) | 2010-04-27 | 2010-04-27 | Pressure-meeting equalizer-free stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010156360 CN101858472B (en) | 2010-04-27 | 2010-04-27 | Pressure-meeting equalizer-free stopper |
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| Publication Number | Publication Date |
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| CN101858472A true CN101858472A (en) | 2010-10-13 |
| CN101858472B CN101858472B (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010156360 Active CN101858472B (en) | 2010-04-27 | 2010-04-27 | Pressure-meeting equalizer-free stopper |
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| CN (1) | CN101858472B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676568A (en) * | 2017-12-06 | 2018-02-09 | 中石化石油工程技术服务有限公司 | A kind of on-line production pipeline internal hydraulic pressure plugging device and its application method |
| CN108533875A (en) * | 2017-03-02 | 2018-09-14 | 中国石油天然气集团公司 | A kind of pipe plugging head feed mechanism |
| CN109282106A (en) * | 2018-11-13 | 2019-01-29 | 北京实利信达仪器设备有限公司 | A kind of plugging device and plugging device |
| CN109373100A (en) * | 2018-12-04 | 2019-02-22 | 中石化石油工程技术服务有限公司 | A kind of hydraulic packer that stroke automatically controls |
| CN110886927A (en) * | 2019-09-03 | 2020-03-17 | 中冶华天工程技术有限公司 | Intelligent plugging device for underwater blind area |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3503424A (en) * | 1968-04-22 | 1970-03-31 | Willard A Sawyer | Pipeline plugging pig and method for temporarily plugging pipelines |
| CN2152133Y (en) * | 1993-01-13 | 1994-01-05 | 张良永 | Pipe instant stopper |
| CN201155649Y (en) * | 2008-02-01 | 2008-11-26 | 于大成 | Universal elastic pipe plugging piece |
| CN201696802U (en) * | 2010-04-27 | 2011-01-05 | 新疆三叶管道技术有限责任公司 | Pressure-facing equalizer-free plugging device |
-
2010
- 2010-04-27 CN CN 201010156360 patent/CN101858472B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3503424A (en) * | 1968-04-22 | 1970-03-31 | Willard A Sawyer | Pipeline plugging pig and method for temporarily plugging pipelines |
| CN2152133Y (en) * | 1993-01-13 | 1994-01-05 | 张良永 | Pipe instant stopper |
| CN201155649Y (en) * | 2008-02-01 | 2008-11-26 | 于大成 | Universal elastic pipe plugging piece |
| CN201696802U (en) * | 2010-04-27 | 2011-01-05 | 新疆三叶管道技术有限责任公司 | Pressure-facing equalizer-free plugging device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533875A (en) * | 2017-03-02 | 2018-09-14 | 中国石油天然气集团公司 | A kind of pipe plugging head feed mechanism |
| CN108533875B (en) * | 2017-03-02 | 2024-05-28 | 中国石油天然气集团公司 | Pipeline plugging head feeding mechanism |
| CN107676568A (en) * | 2017-12-06 | 2018-02-09 | 中石化石油工程技术服务有限公司 | A kind of on-line production pipeline internal hydraulic pressure plugging device and its application method |
| CN109282106A (en) * | 2018-11-13 | 2019-01-29 | 北京实利信达仪器设备有限公司 | A kind of plugging device and plugging device |
| CN109282106B (en) * | 2018-11-13 | 2023-08-22 | 北京实利信达仪器设备有限公司 | Plugging device and plugging device |
| CN109373100A (en) * | 2018-12-04 | 2019-02-22 | 中石化石油工程技术服务有限公司 | A kind of hydraulic packer that stroke automatically controls |
| CN110886927A (en) * | 2019-09-03 | 2020-03-17 | 中冶华天工程技术有限公司 | Intelligent plugging device for underwater blind area |
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| Publication number | Publication date |
|---|---|
| CN101858472B (en) | 2013-01-09 |
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