CN210128151U - Special flange for gas pipeline - Google Patents
Special flange for gas pipeline Download PDFInfo
- Publication number
- CN210128151U CN210128151U CN201920278436.5U CN201920278436U CN210128151U CN 210128151 U CN210128151 U CN 210128151U CN 201920278436 U CN201920278436 U CN 201920278436U CN 210128151 U CN210128151 U CN 210128151U
- Authority
- CN
- China
- Prior art keywords
- flange
- blind plate
- gas pipeline
- special
- short pipe
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 claims abstract description 5
- 210000005069 ears Anatomy 0.000 claims description 3
- 239000003034 coal gas Substances 0.000 description 6
- 238000002955 isolation Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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- Joints Allowing Movement (AREA)
Abstract
The utility model provides a special flange of gas pipeline replaces the ordinary flange of gas pipeline, reduces the setting of isolated valve group, reduces the engineering investment, compares with ordinary gas pipeline flange, utilizes this technique blind plate operation to simplify convenient and save time. The utility model discloses mainly constitute by following several parts: the left short pipe, the middle short pipe, the expansion joint, the blind plate lug, the lead screw, the flange, the right short pipe and the like. When the blind plate is to be plugged, the two screw rods are rotated in one direction by using a manual wrench, the flange is loosened to form a proper gap, the blind plate is plugged in from the gap of the flange, the two screw rods are rotated in the opposite direction of the loosening until the blind plate is clamped by the flange, and finally the bolts of the flange are installed. When the blind plate is to be removed, bolts between the flanges are unfastened, the screw rods are rotated by a manual wrench, a certain gap is formed between the flanges and the blind plate when the flanges and the blind plate are loosened, the blind plate is drawn out, the two screw rods are rotated in the opposite direction of loosening until the flanges are clamped, and finally the bolts of the flange are installed.
Description
Technical Field
The technology belongs to the technical field of general mechanical equipment, and particularly relates to a flange special for a gas pipeline.
Background
Coal gas is widely used as fuel of industrial kilns, but the coal gas has the characteristics of flammability, explosiveness and toxicity, so that the coal gas combustion equipment or coal gas facilities to be disconnected must be completely and thoroughly isolated from the running coal gas pipeline to ensure safety. At present, a butterfly valve and a blind plate valve group are arranged on a gas pipeline, the butterfly valve is closed firstly, and then the blind plate valve is closed, so that the complete and thorough isolation of the online gas pipeline and a split gas facility is realized.
Under the condition that gas facilities are determined to be frequently required to be disconnected, the arrangement is necessary, such as an entrance and an exit of a machine room and an entrance and an exit pipeline of a heating furnace, and in the occasion that the frequency of completely and thoroughly isolating in production is low, if an isolating valve group is arranged in design, the use frequency is too low, and the engineering technology is not economical. However, if an isolation means is not provided, once a situation that complete isolation is required occurs, great inconvenience is caused to production, or if only a common pipeline flange is installed on a pipeline, in order to isolate the blind plate operation, a hydraulic jack needs to be prepared temporarily, a support iron needs to be welded on the pipeline, and the like, so that the difficulty of the blind plate operation is increased, and the time is long.
The present technology aims to solve such contradictions and difficulties.
Disclosure of Invention
The utility model provides a special flange for a gas pipeline, which solves the existing problems.
The technical principle of the utility model is that after the flange special for the gas pipeline is installed, when the gas pipeline is completely and thoroughly isolated, the flange special for the gas pipeline is started to replace an isolated gas valve group. The special flange is provided with a loosening and pressing mechanism, professional operators operate the loosening and pressing mechanism by using a hand tool on site, a certain gap is generated between loosening flanges, and the loosening and pressing mechanism is plugged into the gap between a blind plate and the flange, so that the complete isolation between the loosening and pressing mechanism and an online gas pipeline is realized, and the effect of replacing an isolated gas valve group is achieved.
If adopt the utility model discloses afterwards, for original ordinary pipeline flange, the blind plate operation of isolated coal gas, labour saving and time saving. And the engineering investment is reduced relative to the arrangement of an isolation valve group.
The utility model discloses mainly constitute by following several parts: the left short pipe, the expansion joint, the middle short pipe, the blind plate lug, the lead screw, the flange, the right short pipe and the like.
The utility model discloses gas piping is connected to the one end of left nozzle stub, the other end welds with the expansion joint, left nozzle stub and middle nozzle stub are connected respectively to the both ends of expansion joint, nozzle stub and right nozzle stub in the middle of the flange joint, blind plate ear has two pairs, arrange respectively in the both sides symmetrical with pipeline flange axis, the wire sleeve is processed into in the middle of the perforation of blind plate ear, two lead screws of installation on two pairs of blind plate ears, the lead screw is parallel with pipeline flange the central axis, the flange is strideed across to the lead screw, this special flange working method is that two lead screws are equidirectional rotatory simultaneously, make and strut or compress tightly between the flange.
The blind plate used when the blind plate is plugged is not expressed in the content, and a user can prepare the blind plate according to the field situation.
The utility model discloses also can install with the help of the existing expander of pipeline, can remove this moment the utility model provides an expansion joint component.
Drawings
See the attached drawings of the specification, fig. 1, fig. 2 and fig. 3, the structure of the utility model is schematic.
Fig. 1 is a front view, fig. 2 is a plan view, and fig. 3 is a side view.
The device comprises a left short pipe 1, an expansion joint 2, a middle short pipe 3, a flange 4, a blind plate lug 5, a lead screw 6 and a right short pipe 7.
Detailed Description
The implementation mode is as follows: one end and the gas piping connection of left side nozzle stub 1, the other end is connected with expansion joint 2, left nozzle stub 1 and middle nozzle stub 3 are connected at the both ends of expansion joint 2, nozzle stub 3 and right nozzle stub 7 in the middle of flange 4 connects, blind plate ear 5 has two pairs, arrange respectively with the symmetrical both sides of pipeline flange axis, fix on middle nozzle stub 3 and right nozzle stub 7 pipe wall, the wire cover is processed into in the middle of blind plate ear 5 perforation, install two lead screws 6 on two pairs of blind plate ears 5, lead screw 6 axis is parallel with flange pipeline the central axis, lead screw 6 stridees across flange 4, this special flange working method is that two lead screws 6 are equidirectional rotatory simultaneously, make and strut or compress tightly between the flange 4.
And (5) plugging the blind plate. Preparing a metal blind plate matched with the flange 4 in specification, unfastening bolts on the flange 4, rotating two lead screws 6 in one direction simultaneously by using a manual wrench according to the gas operation specification, loosening 4 pieces of the flange to form a gap of about 10mm, inserting the blind plate from the upper part of the flange 4, rotating the two lead screws 6 in the opposite direction of loosening simultaneously until the flange 4 clamps the blind plate, and finally installing the bolts of the flange 4.
And (5) dismantling the working process of the blind plate. And (3) unfastening the bolts between the flanges 4, operating according to the gas operation regulation, simultaneously rotating the two screw rods 6 in one direction by using a manual wrench, loosening the flanges 4 to form a certain gap with the blind plate, drawing out the blind plate, simultaneously rotating the two screw rods 6 in the opposite direction of loosening until the flanges 4 are clamped, and finally installing the bolts of the flanges 4.
Another embodiment of the present invention is to install the expander by means of a pipeline, and at this time, the expansion joint element of the present flange can be removed, and the rest remains, still belonging to the scope of the present invention.
Claims (5)
1. A flange special for a gas pipeline is characterized by comprising the following components: the device comprises a left short pipe (1), an expansion joint (2), a middle short pipe (3), a flange (4), a blind flange lug (5), a lead screw (6) and a right short pipe (7); the one end and the gas piping of left side nozzle stub (1) are connected, the other end and expansion joint (2) welded connection, left nozzle stub (1) and middle nozzle stub (3) are connected respectively to the both ends of expansion joint (2), nozzle stub (3) and right nozzle stub (7) in the middle of flange (4) are connected, blind plate ear (5) have two pairs, arrange respectively with the symmetrical both sides of pipeline flange axis, fix on middle nozzle stub (3) and right nozzle stub (7) pipe wall, blind plate ear (5) middle perforation processing becomes the silk braid, install two lead screws (6) on two pairs of blind plate ears (5), the working method of lead screw (6) is that two lead screws are equidirectional rotatory simultaneously, make and strut or compress tightly between flange (4).
2. The flange special for gas pipeline according to claim 1, wherein one end of the left short pipe (1) and one end of the right short pipe (7) are welded with the gas pipeline, so as to install the flange special for gas pipeline into the gas pipeline.
3. Flange special for gas pipes according to claim 1, characterized by the expansion joint (2) which is used to absorb the axial pipe deformation that the flange is stretched; the expansion joint (2) element may be eliminated if installed in conjunction with a pipe expander.
4. The special flange for gas pipelines according to claim 1, wherein the flange (4) is a flange for a common pipeline, and the blind plate for plugging is placed between the flange (4) sheets.
5. The special flange for the gas pipeline according to claim 1, wherein two lead screws (6) are mounted on the two pairs of blind lugs (5), and the lead screws (6) work in a mode that a spanner is used for clamping the two lead screws and simultaneously rotating in the same direction to expand the flanges (4), and meanwhile, the flanges are compressed when rotating in the opposite direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920278436.5U CN210128151U (en) | 2019-03-06 | 2019-03-06 | Special flange for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920278436.5U CN210128151U (en) | 2019-03-06 | 2019-03-06 | Special flange for gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210128151U true CN210128151U (en) | 2020-03-06 |
Family
ID=69660989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920278436.5U Expired - Fee Related CN210128151U (en) | 2019-03-06 | 2019-03-06 | Special flange for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210128151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853388A (en) * | 2020-07-13 | 2020-10-30 | 内蒙古恒坤化工有限公司 | Gas pipeline installation supporting device and using method thereof |
| CN113967894A (en) * | 2020-07-23 | 2022-01-25 | 中国石油化工股份有限公司 | Rapid flange loosening and pressing device and operation method thereof |
-
2019
- 2019-03-06 CN CN201920278436.5U patent/CN210128151U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853388A (en) * | 2020-07-13 | 2020-10-30 | 内蒙古恒坤化工有限公司 | Gas pipeline installation supporting device and using method thereof |
| CN113967894A (en) * | 2020-07-23 | 2022-01-25 | 中国石油化工股份有限公司 | Rapid flange loosening and pressing device and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200306 |