CN212226088U - Built-in anti-theft one-way valve structure for gas and liquid medium conveying pipeline - Google Patents
Built-in anti-theft one-way valve structure for gas and liquid medium conveying pipeline Download PDFInfo
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- CN212226088U CN212226088U CN202020590965.1U CN202020590965U CN212226088U CN 212226088 U CN212226088 U CN 212226088U CN 202020590965 U CN202020590965 U CN 202020590965U CN 212226088 U CN212226088 U CN 212226088U
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- 239000007788 liquid Substances 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 210000004907 gland Anatomy 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 9
- 235000017491 Bambusa tulda Nutrition 0.000 description 9
- 241001330002 Bambuseae Species 0.000 description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 9
- 239000011425 bamboo Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a check valve, concretely relates to but built-in theftproof check valve structure for gas, liquid medium pipeline. The utility model aims at solving the technical problem that the built-in one-way valve on the existing gas and liquid medium conveying pipeline has the drunkenness and the leakage easily to appear, the theftproof nature is low, and provides a built-in theftproof one-way valve structure for gas and liquid medium conveying pipeline. The structure comprises an inner clamping cylinder, an expansion block with external threads, a check valve and a joint provided with a through hole; the inner clamping cylinder is a conical sleeve with at least two longitudinal notches, barbs matched with the inner wall of the conveying pipeline are arranged on the outer wall of the inner clamping cylinder, internal threads are arranged on the inner wall of the inner clamping cylinder, and the opening ends of the longitudinal notches and the small end of the conical sleeve are located on the same side; the expansion block is in threaded connection with the inner wall of the conical sleeve; a wrench groove is arranged at the axis of the expansion block; the check valve is hermetically arranged in the inner clamping cylinder through a joint; the joint is in threaded connection with the inner clamping barrel; a sealing device is arranged between the inner clamping cylinder and the conveying pipeline.
Description
Technical Field
The utility model relates to a check valve, concretely relates to but built-in theftproof check valve structure for gas, liquid medium conveying line can be applied to various gas, liquid medium's conveying line, for example the long distance medium conveying line of oil well head, field station.
Background
Various gas and liquid medium conveying pipelines, such as long-distance medium conveying pipelines of petroleum well heads and stations, can cause backflow or theft of gas and liquid media due to damage of upstream equipment of pipelines, pipeline damage or artificial damage or theft and the like in the process of medium conveying, and bring great influence to production and environmental safety, wherein the backflow or theft of gas and liquid media caused by theft of a check valve is particularly serious.
The existing check valves used for gas and liquid medium conveying pipelines are mostly externally mounted on the installation mode, and are also rarely internally mounted. The external mounting is carried out by adopting a flange, a screw thread or a welding mode, although the maintenance is convenient, the installation is difficult, and the installation position of the check valve is clear at a glance, so that the external check valve has no anti-theft function, and the condition that gas and liquid media flow backwards or are stolen due to the fact that the external check valve is stolen is very easy to cause; the built-in check valve is easy to move and leak after being installed, has certain concealment, and is easy to be stolen once being found.
Disclosure of Invention
The utility model aims at solving the technical problem that the built-in one-way valve on the existing gas and liquid medium conveying pipeline has the drunkenness and the leakage easily to appear, the theftproof nature is low, and provides a built-in theftproof one-way valve structure for gas and liquid medium conveying pipeline.
In order to solve the technical problem, the utility model provides a technical solution as follows:
a built-in anti-theft one-way valve structure for gas and liquid medium conveying pipelines is characterized in that: comprises an inner clamping cylinder, an expansion block with external threads, a check valve and a joint provided with a through hole; and a safety jackscrew.
The inner clamping cylinder is a conical sleeve with at least two longitudinal notches, barbs matched with the inner wall of the conveying pipeline are arranged on the outer wall of the inner clamping cylinder, internal threads are arranged on the inner wall of the inner clamping cylinder, and the opening ends of the longitudinal notches and the small end of the conical sleeve are located on the same side;
the expansion block is in threaded connection with the inner wall of the conical sleeve;
a wrench groove is formed in the axis of the expansion block;
the check valve is hermetically arranged in the inner clamping cylinder through the joint;
the joint is in threaded connection with the inner clamping cylinder;
and a sealing device is arranged between the inner clamping cylinder and the conveying pipeline.
Furthermore, in order to realize sufficient sealing between the inner clamping cylinder and the conveying pipeline, a sealing groove is formed in the outer side of the upper portion of the inner clamping cylinder, and the sealing device is arranged in the sealing groove and comprises a first sealing ring, a spacer, a second sealing ring and a gland with a through hole;
the first sealing ring and the second sealing ring are sequentially positioned between the sealing groove of the inner clamping cylinder and the conveying pipeline from bottom to top and are used for sealing the inner clamping cylinder and the conveying pipeline;
the shock insulator is arranged between the first sealing ring and the second sealing ring;
the outer diameter of the second sealing ring is larger than the inner diameter of the conveying pipeline, smaller than the outer diameter of the second sealing ring, and slightly larger than the inner diameter of the conveying pipeline, and the outer edge of the second sealing ring can be just lapped on the end part of the conveying pipeline, so that the sealing effect can be effectively ensured, and the strength of the conveying pipeline is basically not influenced;
the gland is in threaded connection with the inner clamping barrel and used for compressing the first sealing ring, the spacer and the second sealing ring.
Furthermore, the safety top screw is inserted between the joint and the inner clamping cylinder after penetrating through the gland.
Further, in order to enhance the theft prevention performance, the expansion block is connected with the inner clamping barrel through left-hand threads, the inner clamping barrel is connected with the joint through left-hand threads, and the joint is connected with the check valve through left-hand threads.
Further, the inner clamping cylinder is made of steel or stainless steel with the hardness not lower than 45 steel.
Further, in order to protect the inner clamping cylinder, the expansion block is made of stainless steel or steel with hardness lower than that of the inner clamping cylinder.
Furthermore, the material of the joint is stainless steel or steel with Rockwell hardness of 32 HRC.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model provides an but be arranged in gas, liquid medium pipeline's built-in theftproof check valve structure, an interior card section of thick bamboo is for having vertical notched expansion sleeve, its outer wall is equipped with the inner wall complex barb with pipeline, the inner wall is equipped with the internal thread, vertical notched open end is located same one side with taper sleeve's tip, can have the expansion piece of external screw thread through twisting, barb chucking on the messenger interior card section of thick bamboo outer wall is on the pipeline inner wall, then check valve and joint on the repacking, it is safe with the check valve ingeniously, pipeline has been installed reliably inside, can prevent that the check valve from drunkenness in the pipeline. The whole installation process does not need to transform the existing screw thread process and the like for connecting the conveying pipelines, does not need to carry out fire operation, is convenient to install in inflammable and explosive places such as oil gas and the like, and reduces the safety risk.
2. The utility model provides a but built-in theftproof check valve structure for gas, liquid medium pipeline, because the single current valve is built-in installs in pipeline, be difficult to see out the mounted position of single current valve from pipeline outside, so have the theftproof function.
3. The utility model provides a but, built-in theftproof check valve structure for gas, liquid medium pipeline, between expansion block and the interior clamping cylinder, between interior clamping cylinder and the joint, between joint and the single current valve all adopt left-handed screw thread connection, easily dismantle, make things convenient for check and maintenance of single current valve; and, different from the conventional right-hand thread connection, the left-hand threads are used at the connection parts, so that when a thief steals the check valve in a tense state, the more the screw is screwed, the more the stealing difficulty is increased, and the anti-theft function can be further enhanced.
4. The utility model provides a but built-in theftproof check valve structure for gas, liquid medium pipeline passes the gland with safe jackscrew and twists between joint and the interior card section of thick bamboo for the connection of the two is more reliable, if in order to strengthen the theftproof function still further, also can destroy the notch on the safe jackscrew, and check valve structure is with permanent fixed mounting among pipeline like this, even discover, also is difficult to stolen.
5. The utility model provides a but built-in theftproof check valve structure for gas, liquid medium pipeline, the material of considering current gas, liquid medium pipeline generally is No. 20 steel, so with the steel that the hardness is not less than No. 45 steel is selected to the material of an interior card section of thick bamboo to when twisting the inflation piece, the conveying line inner wall can be inserted to the barb on the interior card section of thick bamboo outer wall, thereby with interior card section of thick bamboo chucking in pipeline.
6. The utility model provides a but, built-in theftproof check valve structure for gas, liquid medium pipeline, the material of inflation piece is stainless steel or the steel that hardness is less than an interior calorie of section of thick bamboo for moving the inflation piece twisting, when inflation piece and the hard contact of an interior calorie of section of thick bamboo inner wall, the preferential inflation piece of sacrificing will fall to minimum to the damage of an interior calorie of section of thick bamboo, in case the inflation piece damages, as long as in time change can, not only convenient operation practices thrift the cost moreover.
7. The utility model provides a but, built-in theftproof check valve structure for gas, liquid medium pipeline can install wantonly in various valve both ends or tee bend pipeline, does not change pipeline's original flow.
Drawings
Fig. 1 is a schematic structural view of the built-in anti-theft check valve structure for gas and liquid medium conveying pipelines of the present invention when the structure is just installed, the structure comprises a conveying pipeline, an internal clamping cylinder and an expansion block, the internal clamping cylinder is inserted into the conveying pipeline, and then the expansion block is placed inside the internal clamping cylinder;
FIG. 2 is a schematic structural view of the built-in anti-theft check valve structure for gas and liquid medium conveying pipelines of the present invention after installation;
FIG. 3 is an enlarged view of a portion of FIG. 2 at a;
description of reference numerals:
1-inner clamping cylinder; 2-expansion block; 3-a check valve; 4-a linker;
1001-barbs; 2001-wrench groove;
5-a first sealing ring; 6-spacer; 7-a second sealing ring; 8-pressing cover;
9-safety jackscrew; 10-transfer line.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
A built-in anti-theft one-way valve structure for a gas and liquid medium conveying pipeline comprises an inner clamping barrel 1, an expansion block 2 with external threads, a check valve 3 and a joint 4 with a through hole; the inner clamping cylinder 1 is a conical sleeve with at least two longitudinal cuts, an agnail 1001 matched with the inner wall of the conveying pipeline 10 is arranged on the outer wall of the inner clamping cylinder, an internal thread is arranged on the inner wall of the inner clamping cylinder, and the opening end of the longitudinal cut and the small end of the conical sleeve are positioned on the same side; the expansion block 2 is in threaded connection with the inner wall of the conical sleeve; a wrench groove 2001 is formed in the axis of the expansion block 2; the check valve 3 is hermetically arranged in the inner clamping barrel 1 through the joint 4; the joint 4 is in threaded connection with the inner clamping cylinder 1; and a sealing device is arranged between the inner clamping cylinder 1 and the conveying pipeline 10.
The outer side of the upper part of the inner clamping cylinder 1 is provided with a sealing groove, and the sealing device is arranged in the sealing groove and comprises a first sealing ring 5, a spacer 6, a second sealing ring 7 and a gland 8 provided with a through hole; the first sealing ring 5 and the second sealing ring 7 are sequentially positioned between the sealing groove of the inner clamping cylinder 1 and the conveying pipeline 10 from bottom to top and are used for sealing the inner clamping cylinder 1 and the conveying pipeline 10; the spacer 6 is arranged between the first sealing ring 5 and the second sealing ring 7; the outer diameter of the second sealing ring 7 is larger than the inner diameter of the conveying pipeline 10, smaller than the outer diameter of the conveying pipeline, and slightly larger than the inner diameter of the conveying pipeline 10, the outer edge of the second sealing ring can be just lapped on the end part of the conveying pipeline 10, and a special sealing groove for the second sealing ring 7 is not required to be formed in the conveying pipeline 10, so that the sealing effect can be effectively ensured, the strength of the conveying pipeline 10 is basically not influenced, and the existing conveying pipeline is not required to be modified; the gland 8 is in threaded connection with the inner clamping cylinder 1 and is used for compressing the first sealing ring 5, the spacer 6 and the second sealing ring 7. The safety top screw 9 is further included, and the safety top screw 9 penetrates through the gland 8 and then is inserted between the joint 4 and the inner clamping cylinder 1.
The expansion block 2 is connected with the inner clamping barrel 1 through left-hand threads, the joint 4 is connected with the inner clamping barrel 1 through left-hand threads, and the joint 4 is connected with the check valve 3 through left-hand threads.
Considering that the material of the existing gas and liquid medium conveying pipeline is generally 20 # steel, the material of the inner clamping cylinder 1 is steel with the hardness not lower than 45 # steel. The expansion block 2 is made of stainless steel or steel with hardness lower than that of the inner clamping cylinder 1. The joint 4 is made of stainless steel or steel with Rockwell hardness of 32 HRC.
The installation mode is as follows:
selecting a check valve of the type required by a gas and liquid medium conveying pipeline, well performing related safety protection, closing valves at two ends of the conveying pipeline, disassembling the conveying pipeline and needing to install a flange or a three-way plug at one end of the check valve, putting an inner clamping cylinder into the conveying pipeline, screwing an expansion block along the anticlockwise direction (namely the left-hand direction) by using a wrench matched with an expansion block wrench groove, so that an barb on the outer wall of the inner clamping cylinder is tightly clamped on the inner wall of the conveying pipeline, then a check valve, a first sealing ring, a spacer, a second sealing ring and a gland are sequentially arranged, a safety jackscrew is screwed in, the safety jackscrew penetrates through the gland and is inserted between the joint and the inner clamping cylinder, therefore, the check valve is firmly installed in the conveying pipeline, after the installation is finished, the tail end valve of the conveying pipeline is slowly opened, the pressure is reversely tested, the check ensures that the check valve has no medium leakage and no looseness, and then the flow is recovered and put into use.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and it is obvious for a person skilled in the art to modify the specific technical solutions described in the foregoing embodiments or to equally replace some technical features of the embodiments, and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions protected by the present invention.
Claims (7)
1. The utility model provides a but, built-in theftproof check valve structure for gas, liquid medium pipeline which characterized in that: comprises an inner clamping cylinder (1), an expansion block (2) with external threads, a check valve (3) and a joint (4) provided with a through hole;
the inner clamping cylinder (1) is a conical sleeve with at least two longitudinal notches, an agnail (1001) matched with the inner wall of the conveying pipeline (10) is arranged on the outer wall of the inner clamping cylinder, an internal thread is arranged on the inner wall of the inner clamping cylinder, and the opening ends of the longitudinal notches and the small end of the conical sleeve are located on the same side;
the expansion block (2) is in threaded connection with the inner wall of the conical sleeve;
a wrench groove (2001) is formed in the axis of the expansion block (2);
the check valve (3) is hermetically arranged in the inner clamping barrel (1) through the joint (4);
the joint (4) is in threaded connection with the inner clamping cylinder (1);
and a sealing device is arranged between the inner clamping cylinder (1) and the conveying pipeline (10).
2. The built-in anti-theft one-way valve structure for gas and liquid medium conveying pipelines according to claim 1, characterized in that: the outer side of the upper part of the inner clamping cylinder (1) is provided with a sealing groove, and the sealing device is arranged in the sealing groove and comprises a first sealing ring (5), a spacer (6), a second sealing ring (7) and a gland (8) provided with a through hole;
the first sealing ring (5) and the second sealing ring (7) are sequentially positioned between the sealing groove of the inner clamping cylinder (1) and the conveying pipeline (10) from bottom to top and are used for sealing the inner clamping cylinder (1) and the conveying pipeline (10);
the shock insulator (6) is arranged between the first sealing ring (5) and the second sealing ring (7);
the outer diameter of the second sealing ring (7) is larger than the inner diameter of the conveying pipeline (10) and smaller than the outer diameter of the conveying pipeline;
the gland (8) is in threaded connection with the inner clamping cylinder (1) and is used for compressing the first sealing ring (5), the spacer (6) and the second sealing ring (7).
3. The built-in anti-theft one-way valve structure for gas and liquid medium conveying pipelines according to claim 2, characterized in that: the safety top screw (9) penetrates through the gland (8) and then is inserted between the joint (4) and the inner clamping barrel (1).
4. The built-in anti-theft one-way valve structure for gas and liquid medium conveying pipelines according to claim 3, characterized in that: the expansion block (2) is connected with the inner clamping barrel (1) through left-hand threads, the inner clamping barrel (1) is connected with the joint (4) through left-hand threads, and the joint (4) is connected with the check valve (3) through left-hand threads.
5. The built-in anti-theft one-way valve structure for gas and liquid medium conveying pipelines according to claim 3, characterized in that: the inner clamping cylinder (1) is made of steel with the hardness not lower than 45 steel.
6. The built-in anti-theft one-way valve structure for gas and liquid medium conveying pipelines according to claim 3, characterized in that: the expansion block (2) is made of stainless steel or steel with hardness lower than that of the inner clamping cylinder (1).
7. The built-in anti-theft one-way valve structure for gas and liquid medium conveying pipelines according to claim 3, characterized in that: the joint (4) is made of stainless steel or steel with Rockwell hardness of 32 HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590965.1U CN212226088U (en) | 2020-04-20 | 2020-04-20 | Built-in anti-theft one-way valve structure for gas and liquid medium conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590965.1U CN212226088U (en) | 2020-04-20 | 2020-04-20 | Built-in anti-theft one-way valve structure for gas and liquid medium conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212226088U true CN212226088U (en) | 2020-12-25 |
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ID=73908188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020590965.1U Active CN212226088U (en) | 2020-04-20 | 2020-04-20 | Built-in anti-theft one-way valve structure for gas and liquid medium conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212226088U (en) |
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2020
- 2020-04-20 CN CN202020590965.1U patent/CN212226088U/en active Active
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