CN219570126U - Grouting connecting tool for tunnel anchor pipe - Google Patents

Grouting connecting tool for tunnel anchor pipe Download PDF

Info

Publication number
CN219570126U
CN219570126U CN202321157038.0U CN202321157038U CN219570126U CN 219570126 U CN219570126 U CN 219570126U CN 202321157038 U CN202321157038 U CN 202321157038U CN 219570126 U CN219570126 U CN 219570126U
Authority
CN
China
Prior art keywords
pipe
gasket
rubber
grouting
anchor
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.)
Active
Application number
CN202321157038.0U
Other languages
Chinese (zh)
Inventor
罗森林
赵发明
金明
雷科锋
朱熙
王延秋
赵保辉
黄凯
张�育
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.)
Ma'anshan Hanfu Machinery Trading Co ltd
China Railway 11th Bureau Group Co Ltd
Fourth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Original Assignee
Ma'anshan Hanfu Machinery Trading Co ltd
China Railway 11th Bureau Group Co Ltd
Fourth Engineering Co Ltd of China Railway 11th Bureau Group 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
Publication date
Application filed by Ma'anshan Hanfu Machinery Trading Co ltd, China Railway 11th Bureau Group Co Ltd, Fourth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd filed Critical Ma'anshan Hanfu Machinery Trading Co ltd
Priority to CN202321157038.0U priority Critical patent/CN219570126U/en
Application granted granted Critical
Publication of CN219570126U publication Critical patent/CN219570126U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Landscapes

  • Piles And Underground Anchors (AREA)

Abstract

The utility model provides a tunnel anchor pipe slip casting connection instrument, includes the rubber buffer that is used for the butt at anchor intraduct, cup joints in anchor pipe outer peripheral face the cutting ferrule and with the connecting pipe of slip casting pipe intercommunication, set up the through-hole that is used for the slip casting in the rubber buffer, be provided with the check valve in the through-hole, set up the cavity that is used for holding the anchor pipe in the cutting ferrule, the screw hole with connecting pipe threaded connection has been seted up to the bottom of cavity, the one end that the slip casting pipe was kept away from to the connecting pipe is connected with the mounting that is used for with the tip intercommunication of rubber buffer. The design is time-saving, labor-saving, low in cost, high in reliability and good in sealing performance.

Description

Grouting connecting tool for tunnel anchor pipe
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a grouting connecting tool for a tunnel anchor pipe.
Background
In the loose and broken weak surrounding rock section of a tunnel, construction is generally carried out according to the traditional anchor spraying and arch supporting, a steel frame and an anchor pipe are welded on the rock of the tunnel, a valve and a connector are welded on the anchor pipe before grouting, and then grouting is carried out on the anchor pipe through grouting equipment.
Disclosure of Invention
The utility model aims to overcome the defects and problems of time and labor waste and high installation cost in the installation of anchor pipes in the prior art, and provides a grouting connecting tool for tunnel anchor pipes, which is time-saving, labor-saving and low in cost.
In order to achieve the above object, the technical solution of the present utility model is:
the utility model provides a tunnel anchor pipe slip casting connection instrument, includes the rubber buffer that is used for the butt at anchor intraduct, cup joints in anchor pipe outer peripheral face the cutting ferrule and with the connecting pipe of slip casting pipe intercommunication, set up the through-hole that is used for the slip casting in the rubber buffer, be provided with the check valve in the through-hole, set up the cavity that is used for holding the anchor pipe in the cutting ferrule, the screw hole with connecting pipe threaded connection has been seted up to the bottom of cavity, the one end that the slip casting pipe was kept away from to the connecting pipe is connected with the mounting that is used for with the tip intercommunication of rubber buffer.
The rubber plug is of a frustum structure with a narrow upper part and a wide lower part, the diameter of the narrow end of the rubber plug is smaller than the inner diameter of the grouting pipe, and the wide end of the rubber plug is communicated with one end of the connecting pipe through a fixing piece.
The through hole is internally sleeved with a first iron gasket and a first rubber gasket, one side of the first iron gasket is abutted to one side of the one-way valve, one side of the first rubber gasket is abutted to the other side of the first iron gasket, and the first rubber gasket is sleeved with the fixing piece.
The outer peripheral surface of cutting ferrule is connected with a plurality of limit bolts along circumference threaded connection, limit bolt's bottom butt is in the outer peripheral surface of the tip of anchor pipe.
The connecting pipe comprises a spiral jacking pipe and a three-way pipe, the three-way pipe comprises a main pipe and a branch pipe, one end of the spiral jacking pipe is in threaded connection with the threaded hole, the other end of the spiral jacking pipe is in threaded connection with one end of the main pipe, the other end of the main pipe is communicated with a grouting pipe, and the branch pipe is vertically communicated with the main pipe.
The spiral jacking pipe is close to one end of the main pipe and is sequentially sleeved with a second rubber gasket and a second iron gasket, the second iron gasket is abutted to one side of the second rubber gasket, and the second rubber gasket is sleeved in the main pipe.
The branch pipe is kept away from the one end of being responsible for is connected with the relief valve, the outside rotation of relief valve is connected with the handle that is used for switching the relief valve.
And the outer peripheral surface of the spiral jacking pipe is fixedly connected with a nut.
The fixing piece comprises an external thread connector and an internal thread nut, the internal thread nut is communicated with the external thread connector, the external thread connector is sleeved in the through hole of the rubber plug and is arranged relative to the one-way valve, and the internal thread nut is in threaded connection with the connecting pipe.
The outer peripheral surface of the external thread joint is sequentially sleeved with a third iron gasket and a third rubber gasket along the axial direction, one side of the third iron gasket is abutted to one end of the internal thread nut, one side of the third rubber gasket is abutted to the other side of the third iron gasket, and the other side of the third rubber gasket is sleeved in the through hole of the rubber plug.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the grouting connecting tool for the tunnel anchor pipe, the one-way valve is firstly arranged in the rubber plug, the rubber plug is connected with the connecting pipe through the fixing piece, then the clamping sleeve is connected with the anchor pipe, the connecting pipe rotates in the clamping sleeve to drive the rubber plug to move, the rubber plug is enabled to be contacted with and plugged into the anchor pipe, then the connecting pipe is connected with the grouting pipe, grouting is carried out in the grouting pipe, and after grouting is finished, the connecting pipe can be taken down through reversely rotating the connecting pipe. Therefore, the utility model has the advantages of time and labor saving and lower cost in installation.
2. According to the grouting connecting tool for the tunnel anchor pipe, the rubber plug adopts the frustum-shaped design mode, when the rubber plug moves into the anchor pipe under the drive of the connecting pipe, a gap is reserved between the narrow end of the rubber plug and the anchor pipe, so that the rubber plug is more convenient to enter; through installing a plurality of limit bolts at the cutting ferrule periphery, after grouting knot, can twist limit bolt, separate cutting ferrule and anchor pipe, make things convenient for the repeatedly used of instrument. Therefore, the utility model has high reliability, good sealing effect and repeated use.
3. In the grouting connecting tool for the tunnel anchor pipe, the connecting pipe adopts a connecting mode of the spiral jacking pipe and the three-way pipe, so that the grouting connecting tool is convenient to replace, and the three-way pipe is arranged, so that when the grouting pressure of the grouting pipe is high, the pressure is relieved through the branch pipe of the three-way pipe; the pressure release valve and the handle are adopted, and the pressure of pressure release is adjusted by rotating the handle to switch the pressure release valve; through at the spiral jacking pipe external fixation coupling nut, when installing spiral jacking pipe, the accessible holds the nut and installs, and the installation is comparatively convenient. The utility model has high reliability and convenient installation and disassembly.
4. In the grouting connecting tool for the tunnel anchor pipe, the rubber plug and the spiral jacking pipe are respectively connected by adopting the external thread connector and the internal thread nut, so that the rubber plugs with different diameters and the spiral jacking pipe can be connected together, and the application range is wide; by arranging the iron gaskets, the structure is more stable when connecting each structure; by arranging the rubber gasket, the air tightness of the tool is enhanced. Therefore, the utility model has high reliability, wide application range and better sealing performance.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an exploded view of the anchor tube, rubber stopper, check valve, fastener, ferrule of the present utility model.
Fig. 3 is an exploded view of the connection tube according to the present utility model.
Fig. 4 is a schematic structural view of the fixing member in the present utility model.
Fig. 5 is a schematic view of the structure of the check valve according to the present utility model at one viewing angle.
Fig. 6 is a schematic view of the check valve according to another aspect of the present utility model.
Fig. 7 is a schematic structural view of a tee and a pressure release valve in the utility model.
In the figure: anchor tube 1, rubber stopper 2, through hole 21, check valve 3, mounting 4, external thread joint 41, internal thread nut 42, cutting ferrule 5, cavity 51, screw hole 52, limit bolt 6, connecting tube 7, screw jacking tube 71, tee 72, main tube 721, branch pipe 722, relief valve 8, handle 9, first iron gasket 10, first rubber gasket 11, second iron gasket 12, second rubber gasket 13, third iron gasket 14, third rubber gasket 15, nut 16.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 7, a grouting connecting tool for a tunnel anchor pipe comprises a rubber plug 2, a clamping sleeve 5 and a connecting pipe 7, wherein the rubber plug 2 is used for being abutted to the inside of the anchor pipe 1, the clamping sleeve 5 is sleeved on the outer peripheral surface of the anchor pipe 1, the connecting pipe 7 is communicated with the grouting pipe, a through hole 21 for grouting is formed in the rubber plug 2, a one-way valve 3 is arranged in the through hole 21, a cavity 51 for accommodating the anchor pipe 1 is formed in the clamping sleeve 5, a threaded hole 52 in threaded connection with the connecting pipe 7 is formed in the bottom of the cavity 51, and a fixing piece 4 used for being communicated with the end part of the rubber plug 2 is connected with one end of the connecting pipe 7, which is far away from the grouting pipe.
The rubber plug 2 is of a frustum structure with a narrow upper part and a wide lower part, the diameter of the narrow end of the rubber plug 2 is smaller than the inner diameter of the grouting pipe, and the wide end of the rubber plug 2 is communicated with one end of the connecting pipe 7 through the fixing piece 4.
The through hole 21 is internally sleeved with a first iron gasket 10 and a first rubber gasket 11, one side of the first iron gasket 10 is abutted to one side of the one-way valve 3, one side of the first rubber gasket 11 is abutted to the other side of the first iron gasket 10, and the first rubber gasket 11 is sleeved on the fixing piece 4.
The outer peripheral surface of the clamping sleeve 5 is connected with a plurality of limit bolts 6 along circumferential threads, and the bottoms of the limit bolts 6 are abutted to the outer peripheral surface of the end part of the anchor pipe 1.
The connecting pipe 7 comprises a screw jacking pipe 71 and a three-way pipe 72, the three-way pipe 72 comprises a main pipe 721 and a branch pipe 722, one end of the screw jacking pipe 71 is in threaded connection with the threaded hole 52, the other end of the screw jacking pipe is in threaded connection with one end of the main pipe 721, the other end of the main pipe 721 is communicated with a grouting pipe, and the branch pipe 722 is vertically communicated with the main pipe 721.
The spiral jacking pipe 71 is adjacent to one end of the main pipe 721 and is sequentially sleeved with a second rubber gasket 13 and a second iron gasket 12, the second iron gasket 12 is abutted to one side of the second rubber gasket 13, and the second rubber gasket 13 is sleeved in the main pipe 721.
The branch pipe 722 is connected with the relief valve 8 far away from the one end of main pipe 721, the outside of relief valve 8 rotates and is connected with the handle 9 that is used for switching relief valve 8.
The nut 16 is fixedly connected to the outer peripheral surface of the screw jacking pipe 71.
The fixing piece 4 comprises an external thread connector 41 and an internal thread nut 42, the internal thread nut 42 is communicated with the external thread connector 41, the external thread connector 41 is sleeved in the through hole 21 of the rubber plug 2 and is arranged relative to the one-way valve 3, and the internal thread nut 42 is in threaded connection with the connecting pipe 7.
The outer circumferential surface of the external thread joint 41 is sequentially sleeved with a third iron gasket 14 and a third rubber gasket 15 along the axial direction, one side of the third iron gasket 14 is abutted to one end of the internal thread nut 42, one side of the third rubber gasket 15 is abutted to the other side of the third iron gasket 14, and the other side of the third rubber gasket 15 is sleeved in the through hole 21 of the rubber plug 2.
The principle of the utility model is explained as follows:
in the utility model, the rubber plug is made of common natural rubber, the clamping sleeve is made of pure aluminum material, and the three-way pipe 72 and the pressure release valve 8 are made of high-strength stainless steel materials.
Firstly, a one-way valve 3, a first iron gasket 10 and a first rubber gasket 11 are sequentially plugged into a rubber plug 2, an external thread connector 41 and an internal thread nut 42 are screwed into one end of a screw propulsion pipe 71, a third iron gasket 14 and a third rubber gasket 15 are sequentially sleeved on the external thread connector 41, a clamping sleeve 5 is fixed at the end of an anchor pipe 1 through a limit bolt 6, the screw propulsion pipe 71 is utilized to rotate to jack the rubber plug 2 into the anchor pipe 1, then a second iron gasket 12 and a second rubber gasket 13 are sequentially plugged into a three-way pipe 72, the screw propulsion pipe 71 is plugged into the three-way pipe 72, finally the three-way pipe 72 is connected with a grouting pipe, and the grouting pressure in the pipe is adjusted through rotating a handle 9 during grouting.
When the pressure in the pipe is below 1.6Mpa, the whole tool can be disassembled at any time after grouting is finished; when the pressure in the pipe is above 1.6Mpa, the whole tool needs to be disassembled after the slurry is solidified.
Example 1:
referring to fig. 1 to 7, a grouting connecting tool for a tunnel anchor pipe comprises a rubber plug 2, a clamping sleeve 5 and a connecting pipe 7, wherein the rubber plug 2 is used for being abutted to the inside of the anchor pipe 1, the clamping sleeve 5 is sleeved on the outer peripheral surface of the anchor pipe 1, the connecting pipe 7 is communicated with the grouting pipe, a through hole 21 for grouting is formed in the rubber plug 2, a one-way valve 3 is arranged in the through hole 21, a cavity 51 for accommodating the anchor pipe 1 is formed in the clamping sleeve 5, a threaded hole 52 in threaded connection with the connecting pipe 7 is formed in the bottom of the cavity 51, and a fixing piece 4 used for being communicated with the end part of the rubber plug 2 is connected with one end of the connecting pipe 7, which is far away from the grouting pipe.
The rubber plug 2 is of a frustum structure with a narrow upper part and a wide lower part, the diameter of the narrow end of the rubber plug 2 is smaller than the inner diameter of the grouting pipe, and the wide end of the rubber plug 2 is communicated with one end of the connecting pipe 7 through the fixing piece 4.
The outer peripheral surface of the clamping sleeve 5 is connected with a plurality of limit bolts 6 along circumferential threads, and the bottoms of the limit bolts 6 are abutted to the outer peripheral surface of the end part of the anchor pipe 1.
Example 2:
referring to fig. 2, a first iron gasket 10 and a first rubber gasket 11 are sleeved in the through hole 21, one side of the first iron gasket 10 abuts against one side of the one-way valve 3, one side of the first rubber gasket 11 abuts against the other side of the first iron gasket 10, and the first rubber gasket 11 is sleeved on the fixing piece 4.
Example 3:
referring to fig. 1 to 5, the connection pipe 7 includes a screw jacking pipe 71 and a tee 72, the tee 72 includes a main pipe 721 and a branch pipe 722, one end of the screw jacking pipe 71 is screw-coupled to the screw hole 52, the other end is screw-coupled to one end of the main pipe 721, the other end of the main pipe 721 is communicated with a grouting pipe, and the branch pipe 722 is vertically communicated with the main pipe 721. The spiral jacking pipe 71 is adjacent to one end of the main pipe 721 and is sequentially sleeved with a second rubber gasket 13 and a second iron gasket 12, the second iron gasket 12 is abutted to one side of the second rubber gasket 13, and the second rubber gasket 13 is sleeved in the main pipe 721. The branch pipe 722 is connected with the relief valve 8 far away from the one end of main pipe 721, the outside of relief valve 8 rotates and is connected with the handle 9 that is used for switching relief valve 8. The nut 16 is fixedly connected to the outer peripheral surface of the screw jacking pipe 71.
Example 4:
referring to fig. 2 to 4, the fixing member 4 includes an external screw joint 41 and an internal screw nut 42, the internal screw nut 42 is in communication with the external screw joint 41, the external screw joint 41 is sleeved in the through hole 21 of the rubber stopper 2 and is arranged opposite to the check valve 3, and the internal screw nut 42 is in threaded connection with the connecting pipe 7. The outer circumferential surface of the external thread joint 41 is sequentially sleeved with a third iron gasket 14 and a third rubber gasket 15 along the axial direction, one side of the third iron gasket 14 is abutted to one end of the internal thread nut 42, one side of the third rubber gasket 15 is abutted to the other side of the third iron gasket 14, and the other side of the third rubber gasket 15 is sleeved in the through hole 21 of the rubber plug 2.

Claims (10)

1. The utility model provides a tunnel anchor pipe slip casting connection instrument which characterized in that: including being used for inside rubber buffer (2) of butt at anchor pipe (1), cup joint in cutting ferrule (5) of anchor pipe (1) outer peripheral face and with connecting pipe (7) of slip casting pipe intercommunication, set up through-hole (21) that are used for the slip casting in rubber buffer (2), be provided with check valve (3) in through-hole (21), set up cavity (51) that are used for holding anchor pipe (1) in cutting ferrule (5), screw hole (52) with connecting pipe (7) threaded connection have been seted up to the bottom of cavity (51), one end that the slip casting pipe was kept away from to connecting pipe (7) is connected with mounting (4) that are used for with the tip intercommunication of rubber buffer (2).
2. The tunnel anchor pipe grouting connecting tool as claimed in claim 1, wherein: the rubber plug (2) is of a frustum-shaped structure with a narrow upper part and a wide lower part, the diameter of the narrow end of the rubber plug (2) is smaller than the inner diameter of the grouting pipe, and the wide end of the rubber plug (2) is communicated with one end of the connecting pipe (7) through a fixing piece (4).
3. The tunnel anchor pipe grouting connecting tool as claimed in claim 1, wherein: the through hole (21) is internally sleeved with a first iron gasket (10) and a first rubber gasket (11), one side of the first iron gasket (10) is abutted to one side of the one-way valve (3), one side of the first rubber gasket (11) is abutted to the other side of the first iron gasket (10), and the first rubber gasket (11) is sleeved on the fixing piece (4).
4. The tunnel anchor pipe grouting connecting tool as claimed in claim 1, wherein: the outer peripheral surface of the clamping sleeve (5) is connected with a plurality of limit bolts (6) along circumferential threads, and the bottoms of the limit bolts (6) are abutted to the outer peripheral surface of the end part of the anchor pipe (1).
5. The tunnel anchor pipe grouting connecting tool as claimed in claim 1, wherein: the connecting pipe (7) comprises a spiral jacking pipe (71) and a three-way pipe (72), the three-way pipe (72) comprises a main pipe (721) and a branch pipe (722), one end of the spiral jacking pipe (71) is in threaded connection with the threaded hole (52), the other end of the spiral jacking pipe is in threaded connection with one end of the main pipe (721), the other end of the main pipe (721) is communicated with a grouting pipe, and the branch pipe (722) is vertically communicated with the main pipe (721).
6. The tunnel anchor pipe grouting connection tool according to claim 5, wherein: one end of the spiral jacking pipe (71) close to the main pipe (721) is sequentially sleeved with a second rubber gasket (13) and a second iron gasket (12), the second iron gasket (12) is abutted to one side of the second rubber gasket (13), and the second rubber gasket (13) is sleeved in the main pipe (721).
7. The tunnel anchor pipe grouting connection tool according to claim 5, wherein: one end of the branch pipe (722) far away from the main pipe (721) is connected with a pressure relief valve (8), and the outer side of the pressure relief valve (8) is rotationally connected with a handle (9) for switching the pressure relief valve (8).
8. The tunnel anchor pipe grouting connection tool according to claim 5, wherein: the outer peripheral surface of the spiral jacking pipe (71) is fixedly connected with a nut (16).
9. The tunnel anchor pipe grouting connecting tool as claimed in claim 1, wherein: the fixing piece (4) comprises an external thread connector (41) and an internal thread nut (42), the internal thread nut (42) is communicated with the external thread connector (41), the external thread connector (41) is sleeved in a through hole (21) of the rubber plug (2) and is arranged relative to the one-way valve (3), and the internal thread nut (42) is in threaded connection with the connecting pipe (7).
10. The tunnel anchor pipe grouting connection tool of claim 9, wherein: the outer peripheral surface of the external thread joint (41) is sequentially sleeved with a third iron gasket (14) and a third rubber gasket (15) along the axial direction, one side of the third iron gasket (14) is abutted to one end of the internal thread nut (42), one side of the third rubber gasket (15) is abutted to the other side of the third iron gasket (14), and the other side of the third rubber gasket (15) is sleeved in a through hole (21) of the rubber plug (2).
CN202321157038.0U 2023-05-15 2023-05-15 Grouting connecting tool for tunnel anchor pipe Active CN219570126U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321157038.0U CN219570126U (en) 2023-05-15 2023-05-15 Grouting connecting tool for tunnel anchor pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321157038.0U CN219570126U (en) 2023-05-15 2023-05-15 Grouting connecting tool for tunnel anchor pipe

Publications (1)

Publication Number Publication Date
CN219570126U true CN219570126U (en) 2023-08-22

Family

ID=87662859

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321157038.0U Active CN219570126U (en) 2023-05-15 2023-05-15 Grouting connecting tool for tunnel anchor pipe

Country Status (1)

Country Link
CN (1) CN219570126U (en)

Similar Documents

Publication Publication Date Title
CN202141632U (en) Connecting device for pressuring of middle or low pressure plain-end steel tube
CN201297461Y (en) Movable joint of pipeline
CN205919034U (en) Ferrule type pipe joint
CN204573454U (en) Self-sealing expansion is swollen plug
CN219570126U (en) Grouting connecting tool for tunnel anchor pipe
CN202349428U (en) Pipeline connector
CN209943736U (en) High-pressure hydraulic pipe fitting sealing joint
CN109268592B (en) Connecting device suitable for transformer oil drain valve
CN218564655U (en) Leakage-proof fastener for water supply pipeline
CN208088668U (en) A kind of full grout sleeve of bar connecting
CN212776251U (en) Building construction pipeline plugging device
CN201293164Y (en) Quickly connecting and plugging pipe joint
CN209041978U (en) Storage pressure tests fast connecting joint
CN2364307Y (en) Elastic cutting ferrule type pipe connection
CN202247967U (en) Spiral connection embedded pipe
CN108105521B (en) Pipeline plugging device based on ship
CN108799830A (en) Storage pressure tests fast connecting joint
CN201145104Y (en) High pressure underground gas storing well bore hard seal type joint
CN201982860U (en) Adding interface
CN201259048Y (en) Straight joint
CN110630292A (en) Hole sealing and grouting reinforcement device and method for fractured coal rock mass
CN220320614U (en) Reducing tee pipeline
CN201162512Y (en) Offset-adjusting abrasion-proof sealing device of polished rod
CN216479414U (en) Steel pipe connection clamping head for construction engineering
CN110778846B (en) Novel plugging rubber plug

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant