CN215928730U - PNG divides defeated station with function is prevented leaking by pipeline - Google Patents
PNG divides defeated station with function is prevented leaking by pipeline Download PDFInfo
- Publication number
- CN215928730U CN215928730U CN202121744075.2U CN202121744075U CN215928730U CN 215928730 U CN215928730 U CN 215928730U CN 202121744075 U CN202121744075 U CN 202121744075U CN 215928730 U CN215928730 U CN 215928730U
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- Prior art keywords
- ring
- semi
- limiting plate
- sealing
- limiting block
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- 238000007789 sealing Methods 0.000 claims abstract description 78
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 210000001503 joint Anatomy 0.000 claims abstract description 10
- 238000009423 ventilation Methods 0.000 claims description 20
- 239000007789 gas Substances 0.000 abstract description 12
- 239000003949 liquefied natural gas Substances 0.000 abstract description 10
- 238000009835 boiling Methods 0.000 abstract description 3
- 238000002309 gasification Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000003345 natural gas Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a PNG sub-delivery station with a pipeline leakage-proof function, which is characterized by comprising a locking mechanism, a sealing mechanism and a conveying mechanism, wherein the conveying mechanism consists of a control cylinder, a sealing flange, a conveying pipe and a sub-delivery station butt joint pipe; when the leakproofness of sealing flange descends through this design, can prevent that gas from contacting the liquefied natural gas of conveyer pipe inside through sealing flange and leading to the gasification of liquefied natural gas fast boiling, stop the conflagration and take place, guaranteed personnel's on every side security.
Description
Technical Field
The utility model relates to the technical field of natural gas sub-transmission stations, in particular to a PNG sub-transmission station with a pipeline leakage-proof function.
Background
A natural gas distribution station is generally built on a long-distance pipeline and used for distributing liquefied natural gas of a long-distance pipeline, the downstream of the natural gas distribution station is generally distributed to one or more urban gate stations, various devices for pressurizing, depressurizing, heating and the like of the liquefied natural gas are generally arranged in the distribution station to convey different terrains, for example, pressurization needs to be carried out inside the pipeline when the natural gas is conveyed to an area with high altitude, depressurization needs to be carried out inside the pipeline when the natural gas is conveyed to an area with low altitude and the like;
the liquefied natural gas conveying pipe inside the branch transmission station in the prior art is connected with the pressure regulating and temperature regulating device of the branch transmission station through a sealing flange, the sealing flange is formed by clamping a gasket by a left flange sheet and a right flange sheet, the gasket is clamped by the left flange sheet and the right flange sheet to achieve a sealing effect, some branch transmission stations are erected in plateau desert areas, mountain forest areas and the like with severe environments, the temperature difference between day and night of the plateau desert areas is large, the gasket clamped at the inner connection part of the sealing flange is easily expanded by heat and contracted by cold and heat under the influence of alternation, the shape of the gasket is distorted, and small gaps are generated, if the branch transmission station pressurizes the inside of a pipeline, gas inside the pipeline easily communicates the gaps of the sealing flange with the inside of the pipeline under the pushing action of pressure, and external gas can enter the sealing flange through the small gaps, because the boiling point of liquefied natural gas is extremely low, the liquefied natural gas is usually stored and transported at ultralow temperature, and the liquefied natural gas can be quickly boiled and quickly gasified after contacting with external gas, at the moment, if the external environment is hot and dry, a fire disaster is easily caused, so that serious consequences are caused, and the physical safety of surrounding personnel is threatened.
Disclosure of Invention
According to the technical problem, the utility model provides a PNG sub-delivery station with a pipeline leakage-proof function, which is characterized by comprising a locking mechanism, a sealing mechanism and a conveying mechanism, wherein the number of the conveying mechanisms is N, and N is more than or equal to 2; the conveying mechanism consists of a control cylinder, a sealing flange, a conveying pipe and a branch conveying station butt joint pipe, wherein the rear end of the conveying pipe is connected with the sealing flange, the conveying pipe is connected with the branch conveying station butt joint pipe through the sealing flange, the rear end of the branch conveying station butt joint pipe is connected with the control cylinder, the sealing mechanism is arranged on the outer side of the sealing flange, and the left end and the right end of the sealing mechanism are respectively provided with a locking mechanism;
the sealing mechanism comprises a lower sealing semi-ring, a lower locking semi-ring, a lower ventilation ring, an upper locking semi-ring, an upper sealing semi-ring and an upper ventilation ring, wherein the upper end of the sealing flange is provided with the upper sealing semi-ring, the lower end of the sealing flange is provided with the lower sealing semi-ring, the upper end of the upper sealing semi-ring is bonded with the upper ventilation ring, the lower end of the lower sealing semi-ring is bonded with the lower ventilation ring, the upper end of the upper ventilation ring is bonded with the upper locking semi-ring, and the lower end of the lower ventilation ring is bonded with the lower locking semi-ring;
the locking mechanism consists of a right limiting plate, a right limiting block, a right telescopic air bag, a left limiting plate, a left telescopic air bag, a left limiting block, a left air guide tube and a right air guide tube, wherein the right end of the upper locking semi-ring is welded with the right limiting plate which is of an L-shaped structure, the right end of the lower locking semi-ring is welded with the right limiting block, the right limiting plate is arranged at the upper end of the right limiting block, the right limiting plate and the right limiting block are used in a matched mode, the right limiting plate and the right limiting block are internally provided with right threaded holes respectively, the two right threaded holes are arranged on the same straight line, the diameters of the two threaded holes are equal, the left side wall inside the right threaded hole is provided with the right telescopic air bag, the right end inside the lower locking semi-ring is provided with the left end of the right air guide tube, the right end of the right air guide tube is connected with the right telescopic air bag, the left end of the lower locking semi-ring is welded with the left limiting plate, and the left limiting plate is of an L-shaped structure, the left limiting block is welded at the left end of the upper locking semi-ring, the left limiting plate is arranged at the lower end of the left limiting block, the left limiting plate is matched with the left limiting block for use, a left threaded hole is formed in the left limiting plate and the left limiting block respectively, two left threaded holes are formed in the same straight line and equal in aperture, a left telescopic air bag is installed on the right side wall of the inner portion of the left threaded hole, the left end of the upper locking semi-ring is provided with the right end of a left air guide tube, the left end of the left air guide tube is connected with the left telescopic air bag, and bolts are meshed with the inner portion of the right threaded hole respectively.
The utility model has the beneficial effects that:
the utility model is characterized in that a sealing mechanism and a locking mechanism are arranged on the basis of sealing a sealing flange consisting of a left flange sheet and a right flange sheet, the sealing flange is wrapped by the mutual matching of the sealing mechanism and the locking mechanism to generate a secondary sealing effect, the joint of the sealing flange can be sealed to prevent external gas from entering the conveying pipe through the sealing flange, an upper locking semi-ring and a lower locking semi-ring are spliced at the joint of the sealing flange to ensure that right threaded holes respectively formed on a right limiting plate and a right limiting block are aligned and left threaded holes respectively formed on the left limiting plate and a left limiting block are aligned, at the moment, two bolts are respectively screwed into the left threaded hole and the right threaded hole in a rotating manner, the upper locking semi-ring and the lower locking semi-ring are firmly fixed at the outer side of the sealing flange, the bolts in the left threaded holes gradually press a left telescopic air bag to the inside, and the internal gas is conveyed into the upper air vent ring through a left air duct, go up and ventilate the ring and be full of gaseous back volume expansion, thereby will go up the last sealed semi-ring tight extrusion of ring bottom of ventilating and seal the flange upside, simultaneously the downthehole bolt of right screw pushes up the flexible gasbag in the right side to inside gradually, carry the gas of inside down in the ring of ventilating through right air duct, the ring of ventilating down is full of gaseous back volume expansion, thereby will ventilate down the lower sealed semi-ring tight extrusion of ring bottom and seal the flange downside, through last sealed semi-ring and the parcel of sealed semi-ring to sealed flange down, the leakproofness of sealed flange has been strengthened greatly, when the leakproofness of sealed flange descends through this design, can prevent that gaseous liquefied natural gas that contacts the conveyer pipe inside through sealed flange leads to the gasification of liquefied natural gas boiling fast, the conflagration emergence has been stopped, personnel's security around has been guaranteed.
Drawings
FIG. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a side cross-sectional view of the inventive structure.
As shown in the figure: 1-sealing flange, 2-right limiting plate, 3-right threaded hole, 4-right limiting block, 5-right telescopic air bag, 6-lower sealing semi-ring, 7-lower locking semi-ring, 8-lower ventilation ring, 9-left limiting plate, 10-left threaded hole, 11-left telescopic air bag, 12-left limiting block, 13-upper locking semi-ring, 14-upper sealing semi-ring, 15-upper ventilation ring, 16-right air duct, 17-left air duct, 18-delivery pipe, 19-branch delivery station butt joint pipe, 20-bolt and 21-control cylinder.
Detailed Description
Example 1
The utility model provides a PNG sub-delivery station with a pipeline leakage-proof function, which is characterized by comprising a locking mechanism, a sealing mechanism and a conveying mechanism, wherein N conveying mechanisms are arranged, and N is more than or equal to 2; the conveying mechanism consists of a control cylinder 21, a sealing flange 1, a conveying pipe 18 and a branch conveying station butt joint pipe 19, the rear end of the conveying pipe 18 is connected with the sealing flange 1, the conveying pipe 18 is connected with the branch conveying station butt joint pipe 19 through the sealing flange 1, the rear end of the branch conveying station butt joint pipe 19 is connected with the control cylinder 21, the sealing mechanism is arranged on the outer side of the sealing flange 1, and the left end and the right end of the sealing mechanism are respectively provided with a locking mechanism;
the sealing mechanism consists of a lower sealing semi-ring 6, a lower locking semi-ring 7, a lower ventilation ring 8, an upper locking semi-ring 13, an upper sealing semi-ring 14 and an upper ventilation ring 15, wherein the upper sealing semi-ring 14 is arranged at the upper end of the sealing flange 1, the lower sealing semi-ring 6 is arranged at the lower end of the sealing flange 1, the upper ventilation ring 15 is bonded at the upper end of the upper sealing semi-ring 14, the lower ventilation ring 8 is bonded at the lower end of the lower sealing semi-ring 6, the upper locking semi-ring 13 is bonded at the upper end of the upper ventilation ring 15, and the lower locking semi-ring 7 is bonded at the lower end of the lower ventilation ring 8;
the locking mechanism comprises a right limiting plate 2, a right limiting block 4, a right telescopic air bag 5, a left limiting plate 9, a left telescopic air bag 11, a left limiting block 12, a left air duct 17 and a right air duct 16, wherein the right limiting plate 2 is welded at the right end of an upper locking semi-ring 13, the right limiting plate 2 is of an L-shaped structure, the right limiting block 4 is welded at the right end of a lower locking semi-ring 7, the right limiting plate 2 is arranged at the upper end of the right limiting block 4, the right limiting plate 2 is matched with the right limiting block 4 for use, right threaded holes 3 are respectively arranged inside the right limiting plate 2 and the right limiting block 4, the two right threaded holes 3 are arranged on the same straight line and have the same aperture, the right telescopic air bag 5 is arranged on the left side wall inside the right threaded hole 3, the right end of the right air duct 16 is arranged at the right end inside the lower locking semi-ring 7, the right end of the right air duct 16 is connected with the right telescopic air bag 5, the left limiting plate 9 is welded at the left end of the lower locking semi-ring 7, left limiting plate 9 is L type structure, the welding of last tight semi-ring 13 left end has left stopper 12, left limiting plate 9 sets up in left stopper 12 lower extreme, left limiting plate 9 uses with the cooperation of left stopper 12, left threaded hole 10 has been seted up respectively to left limiting plate 9 and left stopper 12 inside, two left threaded holes 10 are seted up in same straight line and aperture and are equal, left flexible gasbag 11 is installed to the inside right side wall of left threaded hole 10, the inside left end of last tight semi-ring 13 is provided with the right-hand member of left air duct 17, the left end and the flexible gasbag 11 in left air duct 17 are connected, left threaded hole 10 has bolt 20 with the inside meshing respectively of right threaded hole 3.
Example 2
Before the utility model is used, a conveying pipe 18 is connected with a branch conveying station butt joint pipe 19 through a sealing flange 1, then an upper locking semi-ring 13 and a lower locking semi-ring 7 are spliced at the joint of the sealing flange 1, so that a right threaded hole 3 formed in a right limiting plate 2 and a right limiting block 4 are aligned, a left threaded hole 10 formed in a left limiting plate 9 and a left limiting block 12 are aligned, two bolts 20 are screwed into the left threaded hole 10 and the right threaded hole 3 respectively in a rotating manner, the upper locking semi-ring 13 and the lower locking semi-ring 7 are firmly fixed on the outer side of the sealing flange 1, the bolts 20 in the left threaded hole 10 gradually press a left telescopic air bag 11 inwards, the gas in the left threaded hole is conveyed into an upper vent ring 15 through a left gas guide pipe 17, the upper vent ring 15 is filled with the gas, the volume is expanded, and the upper sealing semi-ring 14 at the bottom of the upper vent ring 15 is tightly pressed on the upper side of the sealing flange 1, meanwhile, the bolt 20 in the right threaded hole 3 gradually extrudes the right telescopic air bag 5 inwards, internal gas is conveyed into the lower ventilating ring 8 through the right air guide pipe 16, the lower ventilating ring 8 is filled with the gas and then expands in volume, so that the lower sealing half ring 6 at the bottom of the lower ventilating ring 8 is tightly extruded at the lower side of the sealing flange 1, and the sealing flange 1 is wrapped by the upper sealing half ring 14 and the lower sealing half ring 6, so that the sealing performance of the sealing flange 1 is greatly enhanced.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. While the utility model has been described with respect to the above embodiments, it will be understood by those skilled in the art that the utility model is not limited to the above embodiments, which are described in the specification and illustrated only to illustrate the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A PNG sub-delivery station with a pipeline leakage-proof function is characterized by comprising a locking mechanism, a sealing mechanism and a conveying mechanism, wherein the conveying mechanism consists of a control cylinder, a sealing flange, a conveying pipe and sub-delivery station butt joint pipes;
the sealing mechanism comprises a lower sealing semi-ring, a lower locking semi-ring, a lower ventilation ring, an upper locking semi-ring, an upper sealing semi-ring and an upper ventilation ring, wherein the upper end of the sealing flange is provided with the upper sealing semi-ring, the lower end of the sealing flange is provided with the lower sealing semi-ring, the upper end of the upper sealing semi-ring is bonded with the upper ventilation ring, the lower end of the lower sealing semi-ring is bonded with the lower ventilation ring, the upper end of the upper ventilation ring is bonded with the upper locking semi-ring, and the lower end of the lower ventilation ring is bonded with the lower locking semi-ring;
the locking mechanism consists of a right limiting plate, a right limiting block, a right telescopic air bag, a left limiting plate, a left telescopic air bag, a left limiting block, a left air guide tube and a right air guide tube, wherein the right limiting plate is welded at the right end of the upper locking semi-ring, the right limiting block is welded at the right end of the lower locking semi-ring, the right limiting plate is arranged at the upper end of the right limiting block, the right limiting plate is matched with the right limiting block for use, a right threaded hole is respectively formed in the right limiting plate and the right limiting block, the right telescopic air bag is arranged on the left side wall in the right threaded hole, the right end in the lower locking semi-ring is provided with the left end of the right air guide tube, the right end of the right air guide tube is connected with the right telescopic air bag, a left limiting plate is welded at the left end of the lower locking semi-ring, the left limiting plate is welded at the lower end of the left limiting block, and the left limiting plate is matched with the left limiting block for use, the left limiting plate and the left limiting block are respectively provided with a left threaded hole, a left telescopic air bag is installed on the right side wall of the inner portion of the left threaded hole, the left end of the inner portion of the upper locking semi-ring is provided with the right end of a left air guide tube, the left end of the left air guide tube is connected with the left telescopic air bag, and bolts are meshed in the left threaded hole and the right threaded hole respectively.
2. A PNG sub-delivery station with a pipeline leakage-proof function according to claim 1, wherein the number of the delivery mechanisms is N, and N is more than or equal to 2.
3. A PNG dispensing station with leak-proof function for piping according to claim 1, wherein the two left threaded holes are opened on the same straight line and have the same diameter.
4. A PNG dispensing station with a leak-proof function for piping according to claim 1, wherein the two right threaded holes are opened in the same straight line and have the same diameter.
5. The PNG sub-station with the pipeline leakage-proof function as recited in claim 1, wherein said left limiting plate is an L-shaped structure.
6. The PNG sub-station with the function of preventing the leakage of the pipeline as recited in claim 1, wherein said right limiting plate is an L-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121744075.2U CN215928730U (en) | 2021-07-29 | 2021-07-29 | PNG divides defeated station with function is prevented leaking by pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121744075.2U CN215928730U (en) | 2021-07-29 | 2021-07-29 | PNG divides defeated station with function is prevented leaking by pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215928730U true CN215928730U (en) | 2022-03-01 |
Family
ID=80399932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121744075.2U Expired - Fee Related CN215928730U (en) | 2021-07-29 | 2021-07-29 | PNG divides defeated station with function is prevented leaking by pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215928730U (en) |
-
2021
- 2021-07-29 CN CN202121744075.2U patent/CN215928730U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20220301 |