CN212349767U - Dredging device for low-pressure gas pipeline - Google Patents
Dredging device for low-pressure gas pipeline Download PDFInfo
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- CN212349767U CN212349767U CN202020267526.7U CN202020267526U CN212349767U CN 212349767 U CN212349767 U CN 212349767U CN 202020267526 U CN202020267526 U CN 202020267526U CN 212349767 U CN212349767 U CN 212349767U
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- drill rod
- dredging
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Abstract
The utility model discloses a dredging device used on a low-pressure gas pipeline, which comprises a dredging cylinder body and a drill rod, wherein the front end and the rear end of the dredging cylinder body are communicated, the front end part of the dredging cylinder body is connected with a valve of the gas pipeline to be dredged through a flange, a water injection pipe communicated with the dredging cylinder body is arranged on the side surface of the front end part of the dredging cylinder body, a first valve is arranged on the water injection pipe, a blow-off pipe communicated with the dredging cylinder body is arranged on the side surface of the dredging cylinder body below the water injection pipe, and a second valve is arranged on the blow-; the drill rod is arranged in the dredging cylinder body in a penetrating mode from the rear end portion of the dredging cylinder body, the drill bit is installed at the head end of the drill rod, and a sealing mechanism used for mechanically sealing a gap between the drill rod and the dredging cylinder body is installed between the rear end portion of the dredging cylinder body behind the blow-off pipe and the drill rod. The gas pipeline dredging device is simple in structure, easy to assemble, safe and reliable, and realizes dredging of the gas pipeline without stopping gas, and gas leakage is avoided.
Description
Technical Field
The utility model relates to a steel smelting field especially relates to a pull throughs for on low pressure gas pipeline.
Background
Coal gas in a coal gas pipeline of a steel enterprise contains some dust impurities due to the purification problem, so that the pipeline of a drainage facility is blocked frequently, a large amount of coal gas is easy to leak due to dredging under the condition of gas replacement without stopping, and great potential safety hazards exist, and production is delayed seriously if gas replacement dredging is stopped.
Disclosure of Invention
An object of the utility model is to provide a pull throughs for on low pressure gas pipeline.
Realize the utility model discloses the technical scheme of purpose is: a dredging device used on a low-pressure gas pipeline comprises a dredging barrel and a drill rod, wherein the front end and the rear end of the dredging barrel are communicated, the front end part of the dredging barrel is connected with a valve of the gas pipeline to be dredged through a flange, a water injection pipe communicated with the dredging barrel is installed on the side surface of the front end part of the dredging barrel, a first valve is installed on the water injection pipe, a drain pipe communicated with the dredging barrel is installed on the side surface of the dredging barrel below the water injection pipe, and a second valve is installed on the drain pipe; the drill rod is arranged in the dredging cylinder body in a penetrating mode from the rear end portion of the dredging cylinder body, the drill bit is installed at the head end of the drill rod, and a sealing mechanism used for mechanically sealing a gap between the drill rod and the dredging cylinder body is installed between the rear end portion of the dredging cylinder body behind the blow-off pipe and the drill rod.
Furthermore, the sealing mechanism comprises a first central through hole flange, a drill rod sleeve and two oil seals, the first central through hole flange is fixedly installed at the rear end of the drill rod sleeve, a first oil seal groove is formed in the surface of the front end of the drill rod sleeve, a second oil seal groove is formed in the end face of the outer side of the first central through hole flange, the axes of the drill rod sleeve, the first oil seal groove, the through hole of the first central through hole flange and the second oil seal groove are on the same straight line, the drill rod sleeve penetrates through the dredging cylinder body from the rear end of the dredging cylinder body and is in interference fit with the dredging cylinder body, the first central through hole flange is located on the outer side of the dredging cylinder body, the drill rod penetrates through the drill rod sleeve from the through hole of the first central through hole flange and is in clearance fit with the first central through hole flange and the drill rod sleeve respectively, and a drill; the oil seals penetrate through the drill rod and are embedded into the first oil seal groove and the second oil seal groove respectively and are in interference fit with the rod body of the drill rod, annular gaskets are fixedly mounted on the surfaces of the first oil seal groove and the second oil seal groove respectively and are locked on the upper end faces of the first central through hole flange and the drill rod sleeve respectively, and the oil seals are limited in the oil seal grooves; the rear end part of the dredging cylinder body above the first central through hole flange is sleeved with a second central through hole flange, a flange gasket is clamped between the first central through hole flange and the second central through hole flange, and the first central through hole flange and the second central through hole flange are connected through bolts.
Further, the first central through hole flange is integrally formed with the drill rod sleeve.
The utility model discloses a pull throughs simple structure, during the use directly with treat the gas piping's of mediation valve flange joint accomplishes the fixed of mediation barrel, then open first valve to the inside water injection of mediation barrel, open gas piping's valve after that and stretch into gas piping's jam department with the drilling rod, make impurity not hard up fall into in the mediation barrel to accomplish the mediation of media pipeline. The gas pipeline dredging device is simple in structure, easy to assemble, safe and reliable, and realizes dredging of the gas pipeline without stopping gas, and gas leakage is avoided.
Drawings
Fig. 1 is an axial sectional structural schematic view of a dredging device according to an embodiment of the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
fig. 3 is a schematic view of the using state structure of the dredging device of the present invention.
Detailed Description
The following description of the preferred embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1 to 3, a dredging device for a low-pressure gas pipeline comprises a dredging cylinder body 1 and a drill rod 2, wherein the front end and the rear end of the dredging cylinder body are communicated, the front end part 11 of the dredging cylinder body 1 is connected with a valve 101 of a gas pipeline 100 to be dredged through a flange 20, a water injection pipe 12 communicated with the dredging cylinder body 1 is installed on the side surface of the front end part 11 of the dredging cylinder body 1, a first valve 13 is installed on the water injection pipe 12, a drain pipe 14 communicated with the dredging cylinder body 1 is installed on the side surface of the dredging cylinder body 1 below the water injection pipe 12, and a second valve 15 is installed on the drain pipe 14; the drill rod 2 penetrates into the dredging cylinder 1 from the rear end part 16 of the dredging cylinder 1, the drill bit 21 is installed at the head end of the drill rod 2, and the sealing mechanism 3 used for mechanically sealing a gap between the drill rod 2 and the dredging cylinder 1 is installed between the rear end part 16 of the dredging cylinder behind the sewage discharge pipe 14 and the drill rod 2.
As shown in fig. 2, the sealing mechanism 3 includes a first center through hole flange 31, a drill bushing 32 and two oil seals (331, 332), the first central through hole flange 31 is fixedly installed at the rear end of the drill rod sleeve 32, a first oil seal groove 322 is formed on the surface of the front end 321 of the drill rod sleeve 32, a second oil seal groove 313 is formed on the outer end surface 312 of the first central through hole flange 31, the axes of the drill sleeve 32, the first oil seal groove 322, the through hole 314 of the first central through hole flange and the second oil seal groove 313 are on the same straight line, the drill rod sleeve 32 penetrates through the dredging cylinder body 1 from the rear end of the dredging cylinder body 1 and is in interference fit with the dredging cylinder body 1, the first central through hole flange 31 is positioned on the outer side of the dredging cylinder body 1, the drill rod 2 passes through the drill rod sleeve 32 from the through hole 314 of the first central through hole flange and is in clearance fit with the first central through hole flange 31 and the drill rod sleeve 32 respectively, and the drill bit 21 is installed at the front end of the drill rod 2; the oil seals (331 and 332) respectively penetrate through the drill rod 2 and are embedded into the first oil seal groove 322 and the second oil seal groove 313 and are in interference fit with a rod body of the drill rod 2, the surfaces of the first oil seal groove 322 and the second oil seal groove 313 are respectively and fixedly provided with an annular gasket 34, the annular gaskets 34 are respectively locked on the upper end surfaces of the first central through hole flange 31 and the drill rod sleeve 32, and the oil seals are limited in the oil seal grooves; a second central through hole flange 17 is sleeved outside the rear end part 16 of the dredging cylinder body above the first central through hole flange 31, a flange gasket 18 is clamped between the first central through hole flange 31 and the second central through hole flange 17, and the first central through hole flange 31 and the second central through hole flange are connected through bolts.
The dredging device for the low-pressure gas pipeline has the following working principle: after the front end part of the dredging barrel is connected with a flange of a gas pipeline to be dredged, the first valve is opened firstly to inject water into the dredging barrel through the water supply device, the sealing mechanism performs mechanical sealing on the drill rod and prevents medium in the dredging barrel from leaking, then the valve of the gas pipeline is opened, the drill rod is pushed manually to move to one side of the gas pipeline and rotate the drill rod, and impurities blocking the pipeline are loosened and fall into the dredging barrel. The second valve can be intermittently opened to discharge sewage in the dredging process, but the dredging cylinder is kept to be filled with water to form a water seal to prevent gas leakage at any time. The structure of the sealing mechanism is not limited to the embodiment, and the sealing mechanism can also be a conventional shaft seal device for preventing fluid leakage in other mechanical fields, and the sealing mechanism in the embodiment utilizes the elasticity and the sealing property of an oil seal to eliminate the gap between a drill rod and a first central through hole flange as well as a drill rod sleeve, thereby achieving the good effect of oil sealing; the pressure filling oil cup and the flange are all commercially available products, and are not described herein; conventional lubricants in the mechanical field such as butter and the like are filled in the oil cavity; the assembly sequence of the first central through hole flange, the drill rod sleeve and the drill rod of the utility model is not limited to the embodiment, the drill rod can be penetrated into the drill rod sleeve firstly, then the first central through hole flange is sleeved into the drill rod and then is welded and fixed with the drill rod sleeve, and the first central through hole flange and the drill rod sleeve can also be opened to prepare an integrated part; the drill rod can be rotated manually or can be in transmission connection with an electric drill to rotate electrically, and the length of the drill rod is limited by enough length to penetrate through the dredging cylinder body to reach a gas pipeline to be dredged.
The above only be the embodiment of the utility model discloses a not consequently restriction the patent scope of the utility model, all utilize the equivalent flow transform that the content of the specification was made, or direct or indirect application is in other relevant technical field, all including on the same reason the utility model discloses a patent protection within range.
Claims (3)
1. A pull throughs for low pressure gas pipeline which characterized in that: the coal gas pipeline dredging device comprises a dredging barrel and a drill rod, wherein the front end and the rear end of the dredging barrel are communicated, the front end part of the dredging barrel is connected with a valve of a gas pipeline to be dredged through a flange, a water injection pipe communicated with the dredging barrel is installed on the side surface of the front end part of the dredging barrel, a first valve is installed on the water injection pipe, a drain pipe communicated with the dredging barrel is installed on the side surface of the dredging barrel below the water injection pipe, and a second valve is installed on the drain pipe; the drill rod is arranged in the dredging cylinder body in a penetrating mode from the rear end portion of the dredging cylinder body, the drill bit is installed at the head end of the drill rod, and a sealing mechanism used for mechanically sealing a gap between the drill rod and the dredging cylinder body is installed between the rear end portion of the dredging cylinder body behind the blow-off pipe and the drill rod.
2. The pull throughs for low pressure gas conduits of claim 1, wherein: the sealing mechanism comprises a first central through hole flange, a drill rod sleeve and two oil seals, the first central through hole flange is fixedly installed at the rear end of the drill rod sleeve, a first oil seal groove is formed in the surface of the front end of the drill rod sleeve, a second oil seal groove is formed in the end face of the outer side of the first central through hole flange, the axes of the drill rod sleeve, the first oil seal groove, the through hole of the first central through hole flange and the second oil seal groove are on the same straight line, the drill rod sleeve penetrates through the dredging cylinder body from the rear end of the dredging cylinder body and is in interference fit with the dredging cylinder body, the first central through hole flange is located on the outer side of the dredging cylinder body, a drill rod penetrates through the drill rod sleeve from the through hole of the first central through hole flange and is in clearance fit with the first central through hole flange and the drill rod sleeve respectively, and; the oil seals penetrate through the drill rod and are embedded into the first oil seal groove and the second oil seal groove respectively and are in interference fit with the rod body of the drill rod, annular gaskets are fixedly mounted on the surfaces of the first oil seal groove and the second oil seal groove respectively and are locked on the upper end faces of the first central through hole flange and the drill rod sleeve respectively, and the oil seals are limited in the oil seal grooves; the rear end part of the dredging cylinder body above the first central through hole flange is sleeved with a second central through hole flange, a flange gasket is clamped between the first central through hole flange and the second central through hole flange, and the first central through hole flange and the second central through hole flange are connected through bolts.
3. The pull through of claim 2, wherein: the first central through hole flange and the drill rod sleeve are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020267526.7U CN212349767U (en) | 2020-03-06 | 2020-03-06 | Dredging device for low-pressure gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020267526.7U CN212349767U (en) | 2020-03-06 | 2020-03-06 | Dredging device for low-pressure gas pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN212349767U true CN212349767U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020267526.7U Active CN212349767U (en) | 2020-03-06 | 2020-03-06 | Dredging device for low-pressure gas pipeline |
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| CN (1) | CN212349767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114210665A (en) * | 2021-11-05 | 2022-03-22 | 北方华锦化学工业股份有限公司 | Device for dredging inverted shower pipeline |
-
2020
- 2020-03-06 CN CN202020267526.7U patent/CN212349767U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114210665A (en) * | 2021-11-05 | 2022-03-22 | 北方华锦化学工业股份有限公司 | Device for dredging inverted shower pipeline |
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