CN201502835U - Leakage stopping device - Google Patents

Leakage stopping device Download PDF

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Publication number
CN201502835U
CN201502835U CN2009201778221U CN200920177822U CN201502835U CN 201502835 U CN201502835 U CN 201502835U CN 2009201778221 U CN2009201778221 U CN 2009201778221U CN 200920177822 U CN200920177822 U CN 200920177822U CN 201502835 U CN201502835 U CN 201502835U
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CN
China
Prior art keywords
clamp
face
groove
flange
packing ring
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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.)
Expired - Fee Related
Application number
CN2009201778221U
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Chinese (zh)
Inventor
洪淑如
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KELOU SCIENCE AND TECHNOLOGY Co Ltd
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KELOU SCIENCE AND TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
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Priority to CN2009201778221U priority Critical patent/CN201502835U/en
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Publication of CN201502835U publication Critical patent/CN201502835U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model provides a leakage stopping device comprising a first clamp body and a second clamp body which can be oppositely combined with the first clamp body. The first clamp body and the second clamp body respectively comprise a first end and a second end which are separate; the internal peripheries of the end faces of the first end and the second end of the first clamp body as well as the second clamp body respectively extend outwards to form leakage-stopping flanges; and the internal peripheries of the end faces of the first clamp body and the second clamp body are further provided with concave grooves, each concave groove internally contains a washer. When the first clamp body and the second clamp body are oppositely combined to be sleeved on a pipe or a flange joint, the washers of the first clamp body and the second clamp body are hermetically connected with the external periphery of the pipe or the flange, and the leakage-stopping flanges of the first clamp body and the second clamp body are attached on the external periphery of the pipe or the flange to achieve the improved leakage-stopping effect of the leakage stopping device.

Description

Leak stoppage device
Technical field
The utility model is relevant for a kind of leak stoppage device, refers to that especially a kind of pipe or flange outside of being installed in is in order to block the leak stoppage device of leakage hole.
Background technique
In the pipe of general conveyance fluid, be extensive use of flange as link.After this flange connections was subjected to erosion of various fluids or ageing failure own in the pipeline, fluid seepage or leakage took place in regular meeting, that is flange connections is one of pipeline or main location of leak of equipment.When pipe itself or flange connections generation leakage, if will dismantle flange keeps in repair, not only waste time and energy, and need to shut down a period of time, will cause very big loss.Thereby the claimant has the design of the novel patent of several 295714 " leak stoppage devices " of certificate number, and it can carry out leak-stopping to leakage hole under the situation that need not dismantle flange.Should " leak stoppage device " comprise can be mutually locked and clamping at first clamp ring and second clamp ring and the plural valve body in the flange outside; Each valve body comprises a valve seat and is assembled in the interior valve rod of this valve seat rotationally, this valve seat has axial bore and the one end extends a joint in order to be incorporated on this clamp ring, and the axial bore of this valve seat can be opened or close to valve rod, when inserting with colloid-injecting gun in the axial bore of each valve seat, and the leak-stopping agent injected in each clamp ring via this valve body, just can need not dismantle under the situation of flange, the leakage hole to flange carries out leak-stopping fast.
First clamp ring of this leak stoppage device is processed formed adaptation with the high planarization that end face is docked in the second clamp ring utilization, prevents the effect of leaking though have.Yet the clamp ring of this leak stoppage device and the combination interface between the flange may produce the gap and cause leaking.
The model utility content
The main purpose of this creation is providing a kind of leak stoppage device, it can be combined in pipeline or the outside of flange in order to seal the pipeline or the leakage hole of flange, reach need not dismantle under the pipeline or the situation of flange leakage hole is implemented leak-stopping, and this leak stoppage device and have advantage simple in structure and that adaptation is high.
Comprise one first clamp and one second clamp according to this leak stoppage device of creating preferred embodiment formation; This first clamp is included in one first end and one second end of one first online separation, first end and second end of this first clamp have an end face respectively, the inner circumference edge of first end of this first clamp and the end face of second end defines an opening, and the inner circumference edge of each end face of this first clamp is provided with a groove, take in a packing ring in each groove, this first clamp more is included in two butt ends of the one second spool online separation vertical with this first axle; This second clamp is included in one first end and one second end of this first online separation, first end and second end of this second clamp have an end face respectively, the inner circumference edge of first end of this second clamp and each end face of second end defines an opening, and the inner circumference edge of each end face of this second clamp is provided with a groove, take in a packing ring in each groove, this second clamp more is included in two butt ends of this second online separation; This first clamp and this second clamp can the butt end is relative be enclosed within on a pipe or the flanged joint in combination, and the packing ring of this first clamp and second clamp connects airtight the outside at this pipe or flange.
In one embodiment, the inner circumference edge of first end of this first clamp and the end face of second end defines the opening of a semicircle shape, and the groove on each end face of this first clamp extends and has one first end and one second end of position on this two butt end along the peripheral direction of semicircle shape opening; The inner circumference edge of first end of this second clamp and the end face of second end defines the opening of a semicircle shape, and the groove on each end face of this second clamp extends and has one first end and one second end of position on this two butt end along the peripheral direction of semicircle shape opening; Each packing ring comprises one first end and one second end, the length of two ends of the groove that the length of two ends of each packing ring is taken in is bigger, after making each packing ring position in the groove of being taken in, first end of this packing ring slightly protrudes first end of this groove, and second end of this packing ring slightly protrudes second end of this groove.The groove that each packing ring is taken at this thickness radially is bigger in this degree of depth radially, make this packing ring position in the groove of being taken in after, the outer surface of this packing ring slightly protrudes the inner circumference edge of pairing end face.
In a preferred embodiment, the inner circumference edge of first end of this first clamp and the end face of second end stretches out along this first axle direction and is formed with resistance leakage flange, the inner circumference edge of first end of this second clamp and the end face of second end stretches out along this first axle direction and is formed with resistance leakage flange, when this first clamp is relative with this second clamp be enclosed within on this pipe or this flanged joint in combination after, the resistance of this first clamp and this second clamp is leaked flange and is attached on the outside of this pipe or flange involutoryly.
About other purpose, advantage and the feature of this creation, can graphicly understand by the detailed description of following preferred embodiment and with reference to appended.
Description of drawings
Fig. 1 creates the stereogram of the leak stoppage device of first embodiment formation according to this, and shows that this leak stoppage device is loaded on the pipe outside.
Fig. 2 is the exploded view of Fig. 1.
Fig. 3 is the transverse sectional view of Fig. 1.
Fig. 4 is the longitudinal sectional view of Fig. 1.
Fig. 5 is the sectional view identical with Fig. 4, and it shows another embodiment of the packing ring of this leak stoppage device.
Fig. 6 creates the stereogram of the leak stoppage device of second embodiment formation according to this, and shows that this leak stoppage device is loaded on the two flanges outside.
Fig. 7 is the exploded view of Fig. 6.
Fig. 8 is the transverse sectional view of Fig. 6.
Fig. 9 creates the stereogram of the leak stoppage device of the 3rd embodiment formation according to this, and shows that this leak stoppage device is loaded on the joint outside with triplate line.
Figure 10 is the exploded view of Fig. 9.
Figure 11 is the transverse sectional view of Fig. 9.
Embodiment
This creation can have multiple different structure embodiment.Now will only be example but non-in order to the restriction a specific embodiment, and with reference to appended graphic preferred construction description of contents with regard to this creation as follows:
Consult Fig. 1 to Fig. 3, demonstration is created the leak stoppage device 1a that first embodiment constitutes according to this, and this leak stoppage device 1a provide the outside that is installed on a pipe 4, and the inside of this pipe 4 has a pore 41, this pore 41 extends along a first axle 2, and this pipe 4 also has an outside 42.
This leak stoppage device 1a comprises one first clamp 11 and one second clamp 12, and in the present embodiment, first clamp 11 and second clamp 12 are respectively the housing that a section is semicircle shape.This first, second clamp 11,12 is included in one first end 111,121 and one second end of separating on this first axle 2 112,122 respectively, this first end 111,121 and second end 112,122 are respectively equipped with an end face 113,123 that radially extends, the inner circumference edge 16 of each end face 113,123 defines a semicircle shape opening that can be enclosed within on the pipe outside 42, makes this first, second clamp 11,12 can be enclosed within on this pipe 4 involutoryly.These first, second clamp 11,12 more indivedual resistance leakage flanges 15 that comprise, in the present embodiment, each resistance is leaked flange 15 and is stretched out along these first axle 2 directions by the inner circumference edge 16 of each end face 113,123 and form, after these first, second clamp 11,12 combinations were enclosed within this pipe 4, this two resistance was leaked flange 15 and is attached on the outside 42 of pipe 4 involutoryly.In the present embodiment, each resistance leakage flange 15 is the thickness thin slice body littler than the thickness of first clamp 11 and second clamp 12.
This first, second clamp 11,12 is more indivedual to be included in two butt ends 114,124 of separating on one second axis 3 vertical with this first axle 2, after this first, second clamp 11,12 was enclosed within this pipe 4 involutoryly, docked mutually the butt end 114,124 of first, second clamp 11,12; Each butt end 114,124 is outward extended with lug 115,125 respectively, has a joining hole 116,126 on each lug 115,125, utilize screw 13 to aim at and pass the joining hole 116,126 on each lug 115,125 and lock nut 131, make the outside 42 of first, second clamp 11,12 clampings at this pipe 4.
In the present embodiment, the groove 17 that the inner circumference edge 16 of each end face 113,123 of first clamp 11 and second clamp 12 more is provided with on each end faces 113 of a groove 17, the first clamps 11 extends and has one first end 171 and one second end 172 of position on two butt ends 114 along the peripheral direction of semicircle shape opening; Groove 17 on each end face 123 of second clamp 12 extends and has one first end 171 and one second end 172 of position on two butt ends 124 along the peripheral direction of semicircle shape opening, and in each groove 17 and take in a packing ring 18 with pressure elasticity, this packing ring 18 can be made by rubber material, this packing ring 18 comprises one first end 181 and one second end 182, the length of two ends of this packing ring 18 is bigger than the length of two ends of this groove 17, after making that this packing ring 18 is accommodated in the groove of taking in 17, first end 181 of this packing ring 18 slightly protrudes first end 171 of this groove 17, and second end 182 of this packing ring 18 slightly protrudes second end 172 of this groove 17; Moreover this packing ring 18 is bigger in this degree of depth radially than this groove 17 at this thickness radially, in the groove 17 that makes this packing ring 18 be accommodated in to take in after, the outer surface 183 of this packing ring 18 slightly protrudes the inner circumference edge 16 of pairing end face 113,123.Thereby, after this first clamp 11 and second clamp 12 are mutually to the outside 42 of ground connection clamping at this pipe 4, first end 181 of the packing ring 18 of first end 181 of the packing ring 18 of this first clamp 11 and second end 182 and this second clamp 12 and second end 182 can be squeezed and connect airtight 114,124 place's (see figure 4)s in the butt end, and the outer surface 183 of this packing ring 18 can be attached on the outside 42 of pipe 4 with connecting airtight.Moreover first end 181 of this packing ring 18 and second end 182 can form complementary oblique angle (see figure 5), so that the docking of the packing ring 18 of the packing ring 18 of this first clamp 11 and this second clamp 12.
This first, second clamp 11,12 is more indivedual to be included in an internal surface 117,127 and an outer surface 118,128 of separating on the thickness direction, and on this first, second clamp 11,12 and be provided with the leak-stopping agent hand-hole 119,129 that runs through this inside and outside surface individually.Each hand-hole 119,129 can provide a valve body 14 to install, and this valve body 14 comprises a valve seat 141 and reaches a valve rod 142 that is assembled in rotationally on this valve seat 141, and the inside of valve seat 141 has a through hole 143.When this valve rod 142 was rotated, this through hole 143 can form connection or not be communicated with (see figure 3), can consult several 295714 " leak stoppage devices " of aforementioned certificate number about the operation of this valve rod 142 and further understand.
The leak stoppage device 1a that constitutes according to this creation is carrying out need not dismantling pipe 4 in the operation of pipeline leak-stopping.In when, promptly when leakage hole 43 is arranged on the pipe 4 leak of liquid taking place, mutual by this first clamp 11 and second clamp 12 earlier to the outside 42 of ground connection clamping at this pipe 4, afterwards, inject in first clamp 11 and second clamp 12 with cross through hole 143 outer ends of colloid-injecting gun (not shown) insertion valve seat 141 and with for example leak-stopping agent of foaming body, the leak-stopping agent is filled in first clamp 11 and second clamp 12, rotates each valve rod 142 again the through hole 143 of valve seat 141 is closed.After the leak-stopping agent in first clamp 11 and second clamp 12 solidify to form sealing layer, just can reach the leakage-proof effect of filling up gap leakage.
The leak stoppage device 1a that constitutes according to this creation connects airtight by the packing ring 18 of this first, second clamp 11,12 and the outside 42 of pipe 4, simultaneously, the resistance of this first, second clamp 11,12 is leaked flange 15 and is connected airtight with the outside 42 of this pipe 4 on these first axle 2 directions, make pipe 4 leakage liquid and fill up the leak-stopping agent of gap leakage can be by the junction point seepage between first, second clamp 11,12 and this pipe outside 42; Moreover it is the thin slice body that flange 15 is leaked in each resistance, and it can come to form driving fit with pipe outside 42 via the processing of beaing of for example beryllium metal.
Consult Fig. 6 to Fig. 8, show according to this and create the leak stoppage device 1b that second embodiment constitutes, in the present embodiment,, will enclose same label and explain with the identical or equal member of the above-mentioned first embodiment expositor; Give unnecessary details rather, will no longer narrate for the structure that has explained in first embodiment.This leak stoppage device 1b provides interface 53 outsides that are installed on two flanges 51,52; This two flange 51,52 is in order to connect a pipeline (not shown), and the inside of each flange has a pore 54, and this pore 54 extends along this first axle 2, and each flange also has an outside 55.
This leak stoppage device 1b comprises one first clamp 11 and one second clamp 12, this is first years old, second clamp 11,12 are included in one first end of separating on this first axle 2 111 respectively, 121 and 1 second end 112,122, this is first years old, second clamp 11,12 more indivedual resistance leakage flanges 15 that comprise, in the present embodiment, each resistance is leaked flange 15 by each first end 111,121 and second end 112, each end face 113 of 122,123 inner circumference edge 16 is along the formation that stretches out of these first axle 2 directions, when this first, second clamp 11,12 combinations are enclosed within this two flange 51, after on 52, this two resistance is leaked flange 15 and is attached to this two flange 51 involutoryly, on 52 the outside 55.Moreover the inner circumference edge 16 of each end face 113,123 of first clamp 11 and second clamp 12 more is provided with a groove 17, takes in a packing ring 18 with pressure elasticity in each groove 17.When fluid seepage or leakage take place in the interface 53 of this two flange 51,52, mutual by this first clamp 11 and second clamp 12 to interface 53 outsides of ground connection clamping at this two flange 51,52, afterwards, the leak-stopping agent of for example foaming body is squeezed in this two flange 51,52 via first clamp 11 and second clamp 12, leak-stopping agent in this two flange solidify to form sealing layer, just can reach the effect of filling up gap leakage and fast leak-stopping.Moreover, packing ring 18 by this first, second clamp 11,12 connects airtight with the outside 42 of pipe 4, simultaneously, leak flange 15 by the resistance of first, second clamp 11,12 of this leak stoppage device 1b and on these first axle 2 directions, connect airtight, make that the leakage of interface 53 of this two flange 51,52 can be by the junction point seepage between first, second clamp 11,12 and this two flange 51,52 with the outside 55 of this two flange 51,52.
Consult Fig. 9 to the 11 figure, demonstration is created the leak stoppage device 1c that the 3rd embodiment constitutes according to this, in the present embodiment, this leak stoppage device 1c provides and is installed on joint 6 outsides with triplate line, second pipe 62 that this joint 6 connects first pipe 61 that extends along first axle 2 and extends along second axis, 3 directions vertical with this first axle 2, first, second pipe 61,62 has an outside 611,621 respectively.This leak stoppage device 1c comprises one first clamp 11 and one second clamp 12, this first, second clamp 11,12 is included in one first end 111,121 and one second end of separating on this first axle 2 112,122 respectively, this first, second clamp 11,12 is more indivedual to be comprised a resistance and leaks flanges 15, and each resistance is leaked flange 15 and stretched out along these first axle 2 directions by the inner circumference edge 16 of the end face 113,123 of each first end 111,121 and second end 112,122 and form; These first, second clamp 11,12 more indivedual one the 3rd ends 110,120 that extend along this second axis 2 that comprise, the inner circumference edge 16 of the end face 113,123 of each the 3rd end 110,120 leaks flange 15 along these second axis, 3 directions and formation one resistance that stretches out.Moreover the inner circumference edge 16 of each end face 113,123 of first clamp 11 and second clamp 12 more is provided with a groove 17, takes in a packing ring 18 with pressure elasticity in each groove 17.When fluid seepage or leakage take place when leakage hole 63 is arranged on the pipe 62, by first clamp 11 of this leak stoppage device 1c dock mutually with second clamp 12 and clamping in the outside of this joint 6, afterwards, the leak-stopping agent of for example foaming body is injected in first clamp 11 and second clamp 12, leak-stopping agent in first clamp 11 and second clamp 12 solidify to form sealing layer, just can reach the leakage-proof effect of filling up gap leakage.Moreover, packing ring 18 by this first, second clamp 11,12 connects airtight with the outside 42 of pipe 4, simultaneously, leak flange 15 by the resistance of this first, second clamp 11,12 and on this first axle 2 and second axial 3 directions, connect airtight, make that the leakage of this tube leak mouth 63 can be by the junction point seepage between first, second clamp 11,12 and this two pipe 61,62 with the outside 611,621 of this two pipe 61,62.
The primary clustering symbol description
1a. leak stoppage device 1b. leak stoppage device
1c. leak stoppage device 11. first clamps
110. the 3rd end 111. first ends
112. second end, 113. end faces
114. butt end 115. lugs
116. combined hole 117. inner surfaces
118. outer surface 119. hand-holes
12. first clamp 120. the 3rd end
121. first end 122. second ends
123. end face 124. butt ends
125. lug 126. combined holes
127. internal surface 128. outer surfaces
129. hand-hole 13. screws
131. nut 14. valve bodies
141. valve seat 142. valve rods
143. flange is leaked in through hole 15. resistances
16. inner circumference edge 17. grooves
171. first end, 172. second ends
18. packing ring 181. first ends
182. second end, 183. outer surfaces
2.3. axis 4. pipes
41. pore 42. outsides
43. leakage hole 51.52. flange
53. interface 54. pores
55. outside 6. joints
61.62. pipe 611.621. outside
63. leakage hole

Claims (7)

1. leak stoppage device, it can be installed in a pipe or the outside of flange, and this leak stoppage device comprises:
One first clamp, it is included in one first end and one second end of one first online separation, this first clamp Dare, first end and second end have an end face respectively, the inner circumference edge of each end face of this first clamp is provided with a groove, take in a packing ring in each groove, this first clamp more is included in two butt ends of the one second spool online separation vertical with this first axle; And
One second clamp, it is included in one first end and one second end of this first online separation, first end and second end of this second clamp have an end face respectively, the inner circumference edge of each end face of this second clamp is provided with a groove, take in a packing ring in each groove, this second clamp more is included in two butt ends of this second online separation;
After this first clamp and this second clamp are enclosed within on this pipe or this flange involutoryly, the relative combination of this first clamp with the butt end of second clamp, and the packing ring of this first clamp and second clamp connects airtight on the outside of this pipe or flange.
2. leak stoppage device as claimed in claim 1, wherein, the inner circumference edge of first end of this first clamp and the end face of second end defines the opening of a semicircle shape, and the groove on each end face of this first clamp extends and has one first end and one second end of position on this two butt end along the peripheral direction of semicircle shape opening; The inner circumference edge of first end of this second clamp and the end face of second end defines the opening of a semicircle shape, and the groove on each end face of this second clamp extends and has one first end and one second end of position on this two butt end along the peripheral direction of semicircle shape opening; Each packing ring comprises one first end and one second end, the length of two ends of the groove that the length of two ends of each packing ring is taken in is bigger, after making each packing ring position in the groove of being taken in, first end of each packing ring slightly protrudes first end of this groove, and second end of each packing ring slightly protrudes second end of this groove.
3. leak stoppage device as claimed in claim 2, wherein, the groove that each packing ring is taken at this thickness radially is bigger in this degree of depth radially, make each packing ring position in the groove of being taken in after, the outer surface of each packing ring slightly protrudes the inner circumference edge of pairing end face.
4. leak stoppage device as claimed in claim 1, wherein, the inner circumference edge of first end of this first clamp and each end face of second end stretches out along this first axle direction and is formed with resistance leakage flange; The inner circumference edge of first end of this second clamp and each end face of second end stretches out along this first axle direction and is formed with resistance leakage flange; After this first clamp and this second clamp were enclosed within on this pipe or this flange involutoryly, the resistance of this first clamp and this second clamp was leaked flange and is attached on the outside of this pipe or flange involutoryly.
5. leak stoppage device as claimed in claim 4, wherein, first end of this first clamp and this second clamp and the end face of second end be radially extending to form along this first end and second end respectively, the inner circumference edge of first end of this first clamp and this second clamp and the end face of second end defines the opening of a semicircle shape respectively, and it is the thickness thin slice body littler than the thickness of first clamp and second clamp that this first clamp leaks flange with each resistance of this second clamp.
6. leak stoppage device as claimed in claim 4, wherein, more indivedual one the 3rd ends that extend along this second axis that comprise of this first clamp and second clamp, each the 3rd end has an end face, the inner circumference edge of each end face of the 3rd end is provided with a groove, take in a packing ring in each groove, the inner circumference edge of the end face of each the 3rd end stretches out along this second axial direction and forms a resistance leakage flange.
7. leak stoppage device as claimed in claim 4, wherein, the butt end of this first clamp and second clamp is outward extended with lug respectively, has a joining hole on each lug, and it is sealed with the butt end of this first clamp and second clamp to utilize screw to aim at the joining hole that passes on each lug.
CN2009201778221U 2009-08-31 2009-08-31 Leakage stopping device Expired - Fee Related CN201502835U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201778221U CN201502835U (en) 2009-08-31 2009-08-31 Leakage stopping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201778221U CN201502835U (en) 2009-08-31 2009-08-31 Leakage stopping device

Publications (1)

Publication Number Publication Date
CN201502835U true CN201502835U (en) 2010-06-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201778221U Expired - Fee Related CN201502835U (en) 2009-08-31 2009-08-31 Leakage stopping device

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102226492A (en) * 2011-05-24 2011-10-26 天津大学 Flange clamp used for bolt corrosion and line sealing
CN103133817A (en) * 2013-02-07 2013-06-05 公安部上海消防研究所 Device and method for conducting online pipeline leakage stoppage
CN105605364A (en) * 2014-10-30 2016-05-25 中国石油天然气股份有限公司 Sealing clamp for pipe fitting and pipe fitting sealing method thereof
CN108150835A (en) * 2017-12-27 2018-06-12 天津市裕民燃气表具有限公司 A kind of natural gas sampling pipe device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102226492A (en) * 2011-05-24 2011-10-26 天津大学 Flange clamp used for bolt corrosion and line sealing
CN102226492B (en) * 2011-05-24 2013-06-12 天津大学 Flange clamp used for bolt corrosion and line sealing
CN103133817A (en) * 2013-02-07 2013-06-05 公安部上海消防研究所 Device and method for conducting online pipeline leakage stoppage
CN103133817B (en) * 2013-02-07 2015-08-12 公安部上海消防研究所 A kind of online Pipe leakage stopper and blocking method
CN105605364A (en) * 2014-10-30 2016-05-25 中国石油天然气股份有限公司 Sealing clamp for pipe fitting and pipe fitting sealing method thereof
CN108150835A (en) * 2017-12-27 2018-06-12 天津市裕民燃气表具有限公司 A kind of natural gas sampling pipe device

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100609

Termination date: 20160831

CF01 Termination of patent right due to non-payment of annual fee