CN116447518A - Natural gas conveying pipeline pressure regulating device - Google Patents
Natural gas conveying pipeline pressure regulating device Download PDFInfo
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- CN116447518A CN116447518A CN202310349099.5A CN202310349099A CN116447518A CN 116447518 A CN116447518 A CN 116447518A CN 202310349099 A CN202310349099 A CN 202310349099A CN 116447518 A CN116447518 A CN 116447518A
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- natural gas
- isolation pipe
- pipe
- transmission gear
- isolation
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 230
- 239000003345 natural gas Substances 0.000 title claims abstract description 115
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 26
- 238000002955 isolation Methods 0.000 claims abstract description 150
- 230000005540 biological transmission Effects 0.000 claims abstract description 85
- 238000000926 separation method Methods 0.000 claims description 66
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 15
- 239000007789 gas Substances 0.000 description 14
- 230000009471 action Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000035 biogenic effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipeline Systems (AREA)
Abstract
The invention belongs to the field of natural gas pipelines, in particular to a natural gas pipeline pressure regulating device which comprises a first isolation pipe and a second isolation pipe, wherein the first isolation pipe and the second isolation pipe are mutually communicated, one end of the first isolation pipe, which is far away from the second isolation pipe, is fixedly connected with a first communicating pipe, through the arrangement, the functions of secondary isolation and independent transmission are realized, any external equipment does not need to bear the ultrahigh pressure of the natural gas pipeline, the natural gas with the rated pressure can be input into the first isolation pipe through a main pipeline in advance according to the bearing range of the external equipment, and then the natural gas is transmitted into the equipment, and the output process can be separated from the natural gas pipeline, so that the use safety is effectively improved.
Description
Technical Field
The invention belongs to the field of natural gas pipelines, and particularly relates to a pressure regulating device for a natural gas conveying pipeline.
Background
Natural gas refers to a type of combustible gas found in nature, and is a fossil fuel, including gases formed by various natural processes in the atmosphere, water and rock circles (including oilfield gas, gas field gas, mudstone gas, coalbed gas, biogenic gas, etc.), and the definition of "natural gas" has been commonly used for a long time.
The natural gas transportation is roughly divided into two kinds, pipeline transportation and vehicle transportation, the vehicle generally uses semitrailers, tractors, trains and other series, and belongs to transportation equipment in chemical equipment, the natural gas pipeline refers to a pipeline for conveying natural gas (including associated gas produced by oil fields) from a mining place or a treatment plant to an urban gas distribution center or an industrial enterprise user, the pipeline is also called a gas pipeline, the natural gas pipeline is utilized to convey the natural gas, and the mode of conveying the natural gas on land in a large amount is adopted, wherein the natural gas pipeline accounts for about half of the total length of the pipeline in the world.
When the existing natural gas pipeline transmits natural gas to external equipment, the natural gas pipeline is generally connected through a simple valve, and the discharge pressure of the natural gas at the outlet is regulated by regulating the size of the valve.
To this end, the invention provides a pressure regulating device for a natural gas conveying pipeline.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a pressure regulating device for a natural gas conveying pipeline, which comprises a first isolation pipe and a second isolation pipe, wherein the first isolation pipe and the second isolation pipe are mutually communicated, one end of the first isolation pipe, which is far away from the second isolation pipe, is fixedly connected with a first communicating pipe, one end of the second isolation pipe, which is far away from the first isolation pipe, is fixedly connected with a second communicating pipe, the first communicating pipe and the second communicating pipe are both communicated with a natural gas pipeline, the inner sides of the first isolation pipe and the second isolation pipe are fixedly connected with separating valves, the outer sides of the first isolation pipe are connected with output valves, the output valves are positioned between the two separating valves, and the outer sides of the first isolation pipe are fixedly connected with pressure gauges.
Preferably, the outside of isolation pipe one is provided with the relief tank, the inside of relief tank is hollow setting, one side rigid coupling that the relief tank is close to isolation pipe one has the relief valve, the inboard intercommunication of relief valve and isolation pipe one, through the setting of relief tank, when importing natural gas in to isolation pipe one, when importing too much, can't dismantle unnecessary pressure through opening the isolation valve, in importing unnecessary natural gas into the relief tank through opening the relief valve, guarantee that the natural gas pressure in isolation pipe one and the isolation pipe two can adapt to the equipment that needs the output.
Preferably, the isolating valve connected with the isolating pipe I comprises a handle I of the control valve, the output valve comprises a handle II of the control valve, a linkage assembly is arranged between the handle I and the handle II, the linkage assembly is used for simultaneously driving the handle I and the handle II to rotate, the arrangement can keep the output pressure in the isolating pipe I unchanged while the output valve continuously outputs outwards, and the linkage assembly can be simultaneously opened and simultaneously closed, so that when a plurality of natural gas transport vehicles meet the requirement of mass transport of natural gas, the quick transport can be realized, and meanwhile, when the vehicles are replaced, the output valve and the isolating valve are simultaneously closed, so that the natural gas pressure in the isolating pipe I is unchanged without readjustment.
Preferably, the linkage assembly comprises a first transmission gear and a second transmission gear, the first transmission gear and the second transmission gear are meshed with each other, a gear I is fixedly connected below the handle I, the gear I is meshed with the second transmission gear, a gear II is fixedly connected below the handle II, the gear II is meshed with the first transmission gear, a driving assembly is arranged below the first transmission gear and used for driving the first transmission gear to rotate, the driving assembly rotates to drive the first transmission gear to rotate, and the second transmission gear, the gear I and the gear II are simultaneously driven under the mutual meshing action, so that the effect of simultaneously controlling the separating valve and the output valve of the isolating pipe I is achieved.
Preferably, the first transmission gear and the second transmission gear have the same size, the first gear and the second gear have the same size, a blocking plate is arranged above the first transmission gear and the second transmission gear, the blocking plate is fixedly connected with the outer side of the first isolation pipe and has the same diameter in cooperation with the first isolation pipe, and the rotating angle can be kept the same in the transmission process, so that the opening range is kept consistent, the blocking plate is used for covering a plurality of gear parts, and the external influence is reduced.
Preferably, the drive assembly includes worm wheel and worm, the tip rigid coupling of worm has the handle three, worm wheel and worm intermeshing, the middle part rigid coupling of first drive gear has the separation axle, separation axle and separation pipe are rotated and are connected, the outside rigid coupling of worm wheel and separation axle, the worm wheel is located first drive gear's below, rotates through the worm to drive worm wheel, separation axle and first drive gear and rotated, and then realized the driving effect, and rotate the worm and only need manual rotation handle three can accomplish, the transmission of worm wheel and worm can only have the worm to transmit for the worm wheel simultaneously, can't reverse drive, has consequently still possessed the auto-lock effect.
Preferably, the separation shaft is arranged in an up-down section mode, the bottom of the separation shaft above the separation shaft is slidably connected with the sliding rod, the sliding rod is fixedly connected with the top of the separation shaft below the sliding rod, the first transmission gear is fixedly connected with the upper half part of the separation shaft, the worm wheel is fixedly connected with the lower half part of the separation shaft, when only unidirectional output is needed, and the upper half part of the separation shaft is pulled upwards through the separation shaft when the unidirectional output is not needed, the first transmission gear and all gear parts are not meshed, and the output valve can be independently opened at the moment.
Preferably, the top rigid coupling of release shaft has the dead lever, the dead lever passes the barrier plate, the top rigid coupling of barrier plate has the jack, the output and the dead lever rigid coupling of jack, through operating the jack, just can upwards pull the dead lever to drive the upper half of release shaft and upwards remove, thereby realize the effect of transmission separation, when merging, remove jack pressure, first drive gear returns to the position under the action of gravity.
Preferably, the first isolation pipe and the second isolation pipe are all arranged in a bending mode, the separation valve is fixedly connected to one end close to the first communication pipe, the first isolation pipe and the second isolation pipe are matched with the bending effect of the first isolation pipe and the second isolation pipe, the first isolation pipe is connected to one side of the main pipeline in parallel, the separation valve is arranged, and more natural gas can be stored in the first isolation pipe and the second isolation pipe.
Preferably, the first isolation pipe and the second isolation pipe are fixedly connected through a flange plate, the first communication pipe and the second communication pipe are fixedly connected with a natural gas pipeline through the flange plate, the output end of the output valve is fixedly connected with a bent transmission pipe, the height of the output end is lowered through the arc transmission pipe, the output pipe is easier to install with output equipment, the whole equipment is tightly fixedly connected with the natural gas pipeline, and the maintenance and the replacement can be carried out by disassembling the flange plate.
The beneficial effects of the invention are as follows:
1. according to the pressure regulating device for the natural gas conveying pipeline, the first isolation pipe and the second isolation pipe are arranged, the separation valve is opened, high-pressure natural gas in the natural gas pipeline enters the first isolation pipe and the second isolation pipe through the separation valve, the pressure of the natural gas in the first isolation pipe is observed through the observation pressure gauge, when the pressure value reaches a preset standard, the separation valve is closed, at the moment, the first isolation pipe and the second isolation pipe are independent of the whole gas pipeline, then the natural gas in the first isolation pipe is output to external equipment through the opening of the output valve, through the arrangement, the functions of secondary isolation and independent transmission are realized, any external equipment does not need to bear the ultrahigh pressure of the natural gas pipeline, the natural gas with a rated pressure can be input into the first isolation pipe through the main pipeline in advance according to the bearing range of the natural gas pipeline, the output process can be separated from the natural gas pipeline, the use safety is effectively improved, meanwhile, the problem that the internal pressure of the pipeline is overlarge can be caused in the natural gas pipeline transportation is effectively, the traditional equipment is needed, the valuable equipment is needed to be prepared, the pressure of the pipeline is reduced, and if the pressure of the pipeline is relieved, and the pressure of the first isolation pipe and the second isolation pipe can be provided with the pressure regulating station is greatly reduced, and if the pressure of the main pipeline is completely connected with the first isolation pipe.
2. According to the pressure regulating device for the natural gas conveying pipeline, through the arrangement of the pressure relief box, when the natural gas is input into the first isolation pipe, the redundant pressure cannot be removed by opening the separation valve when the natural gas is input too much, and the redundant natural gas is input into the pressure relief box by opening the pressure relief valve, so that the natural gas pressure in the first isolation pipe and the second isolation pipe can be adapted to equipment needing to be output.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of an isolation tube of the present invention;
FIG. 3 is a perspective view of a split valve and a first transfer gear of the present invention;
FIG. 4 is a schematic view of the structure of the worm wheel and worm in the present invention;
FIG. 5 is a perspective view of a release shaft of the present invention;
FIG. 6 is a perspective view of the isolation tube I and pressure relief box of the present invention;
FIG. 7 is a perspective view of a worm gear of the present invention;
in the figure: 1. an isolation pipe I; 2. a second isolation pipe; 3. a separation valve; 4. a second communicating pipe; 5. a first communicating pipe; 6. a pressure relief box; 7. a pressure gauge; 8. a transmission tube; 9. a first handle; 10. a first gear; 11. an output valve; 12. a second gear; 13. a second handle; 14. a first transmission gear; 15. a second transmission gear; 16. a worm wheel; 17. a third handle; 18. a worm; 19. a separation shaft; 21. a blocking plate; 22. a jack; 23. pulling up the rod; 24. a slide bar; 25. and a pressure release valve.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Example 1
As shown in fig. 1 to 3, the pressure regulating device for a natural gas transmission pipeline according to the embodiment of the invention comprises a first isolation pipe 1 and a second isolation pipe 2, wherein the first isolation pipe 1 and the second isolation pipe 2 are mutually communicated, one end of the first isolation pipe 1, which is far away from the second isolation pipe 2, is fixedly connected with a first communicating pipe 5, one end of the second isolation pipe 2, which is far away from the first isolation pipe 1, is fixedly connected with a second communicating pipe 4, the first communicating pipe 5 and the second communicating pipe 4 are both communicated with a natural gas pipeline, the inner sides of the first isolation pipe 1 and the second isolation pipe 2 are both fixedly connected with a separating valve 3, the outer side of the first isolation pipe 1 is connected with an output valve 11, the output valve 11 is positioned between the two separating valves 3, the outer side of the first isolation pipe 1 is fixedly connected with a pressure gauge 7, when the natural gas transmission pipeline is operated, the natural gas transmission pipeline is generally connected through a simple valve, the method is simple and crude in operation, and because the integral natural gas pipeline is communicated, if the safety accident is easy to be caused by improper operation, the separation valve 3 is opened, high-pressure natural gas in the natural gas pipeline enters the first isolation pipe 1 and the second isolation pipe 2 through the separation valve 3, the pressure of the natural gas in the first isolation pipe 1 is observed through the observation pressure gauge 7, when the pressure value reaches a preset standard, the separation valve 3 is closed, the first isolation pipe 1 and the second isolation pipe 2 are independent of the whole gas pipeline, then the natural gas in the first isolation pipe 1 is output to external equipment under the action of internal natural gas pressure through the opening of the output valve 11, the functions of secondary isolation and independent transmission are realized through the arrangement, any external equipment does not need to bear the ultrahigh pressure of a natural gas pipeline, but can input natural gas with rated pressure into the first isolation pipe 1 through the main pipeline in advance according to the self bearing range, and then the natural gas is transmitted into the equipment, and the output process can be separated from the natural gas pipeline, so that the use safety is effectively improved, meanwhile, the problem that the internal pressure of the pipeline is overlarge in the natural gas pipeline transportation process is solved, the pressure release equipment is needed to be prepared in the traditional pressure release process, the precious time is delayed, and if each pipeline output site is provided with the pressure regulating equipment, the separation valves 3 of all the equipment can be opened when the pressure is overlarge, and the first isolation pipe 1 and the second isolation pipe 2 form a parallel road of the natural gas main pipeline, so that the pressure of the main pipeline is effectively reduced.
As shown in fig. 2 to 6, the outside of the first isolation pipe 1 is provided with a pressure relief box 6, the inside of the pressure relief box 6 is hollow, one side of the pressure relief box 6, which is close to the first isolation pipe 1, is fixedly connected with a pressure relief valve 25, the pressure relief valve 25 is communicated with the inside of the first isolation pipe 1, and when the natural gas is input into the first isolation pipe 1 through the arrangement of the pressure relief box 6, when the natural gas is input too much, the redundant pressure cannot be removed by opening the separation valve 3, and the redundant natural gas is input into the pressure relief box 6 by opening the pressure relief valve 25, so that the natural gas pressure in the first isolation pipe 1 and the second isolation pipe 2 can be ensured to adapt to equipment needing to be output.
As shown in fig. 2 to 4, the separating valve 3 connected with the first isolation pipe 1 comprises a first handle 9 of the control valve, the output valve 11 comprises a second handle 13 of the control valve, a linkage assembly is arranged between the first handle 9 and the second handle 13, the linkage assembly is used for simultaneously driving the first handle 9 and the second handle 13 to rotate, when the natural gas is required to be output in batches during operation, if the natural gas is firstly put into the first isolation pipe 1 according to the method, the natural gas is transmitted outwards after the natural gas is transmitted, the time is long, the air pressure in the first isolation pipe 1 can be firstly input to a preset value through the separating valve 3 of the second isolation pipe 2, then the separating valve 3 and the output valve 11 of the first isolation pipe 1 are simultaneously started to have the same size transmission port through the linkage assembly, the output pressure in the first isolation pipe 1 can be kept unchanged all the time while the output valve 11 is continuously output outwards, and the output pressure in the first isolation pipe 1 can be simultaneously opened and simultaneously closed due to the existence of the linkage assembly, when a plurality of natural gas transport vehicles need to be transmitted in batches, the natural gas can be rapidly transmitted, and the pressure in the first isolation valve 11 is not required to be simultaneously changed, and the pressure in the first isolation valve is not to be simultaneously changed, and the first isolation valve is not required to be simultaneously changed.
As shown in fig. 2 to 5, the linkage assembly includes a first transmission gear 14 and a second transmission gear 15, the first transmission gear 14 and the second transmission gear 15 are meshed with each other, a gear one 10 is fixedly connected below the handle one 9, the gear one 10 is meshed with the second transmission gear 15, a gear two 12 is fixedly connected below the handle two 13, the gear two 12 is meshed with the first transmission gear 14, a driving assembly is arranged below the first transmission gear 14 and is used for driving the first transmission gear 14 to rotate, the first transmission gear 14 is driven to rotate through the rotation of the driving assembly, and the second transmission gear 15, the gear one 10 and the gear two 12 are simultaneously driven under the mutual meshing action, so that the effect of simultaneously controlling the separating valve 3 and the output valve 11 of the isolating pipe one 1 is achieved.
As shown in fig. 2 to 5, the first transmission gear 14 and the second transmission gear 15 have the same size, the first gear 10 and the second gear 12 have the same size, a blocking plate 21 is arranged above the first transmission gear 14 and the second transmission gear 15, the blocking plate 21 is fixedly connected with the outer side of the first isolation tube 1, the diameters of the blocking plate 21 are the same during operation, the rotation angle can be kept the same during transmission, so that the opening amplitude is kept consistent, the blocking plate 21 is used for covering a plurality of gear parts, and the external influence is reduced.
As shown in fig. 3 to 5, the driving assembly includes a worm wheel 16 and a worm 18, the end portion of the worm 18 is fixedly connected with a handle three 17, the worm wheel 16 and the worm 18 are meshed with each other, the middle portion of the first transmission gear 14 is fixedly connected with a separation shaft 19, the separation shaft 19 is rotationally connected with the first separation tube 1, the worm wheel 16 is fixedly connected with the outer side of the separation shaft 19, the worm wheel 16 is located below the first transmission gear 14, and during operation, the worm 18 rotates, so that the worm wheel 16, the separation shaft 19 and the first transmission gear 14 are driven to rotate, and further, a driving effect is achieved, the worm 18 is rotated only by manually rotating the handle three 17, meanwhile, transmission between the worm wheel 16 and the worm 18 can only be transmitted to the worm wheel 16, and reverse transmission cannot be achieved, and therefore a self-locking effect is achieved.
As shown in fig. 5 and 7, the separation shaft 19 is arranged in an up-down section, the bottom of the separation shaft 19 above is slidably connected with the slide rod 24, the slide rod 24 is fixedly connected with the top of the separation shaft 19 below, the first transmission gear 14 is fixedly connected with the upper half of the separation shaft 19, the worm wheel 16 is fixedly connected with the lower half of the separation shaft 19, and when the output valve is operated, only one-way output is needed, and when the output valve is not needed to be operated, the upper half of the separation shaft 19 is pulled upwards, so that the first transmission gear 14 and all gear parts are not meshed, and the output valve 11 can be independently opened.
As shown in fig. 5, the top end of the separation shaft 19 is fixedly connected with an upper pulling rod 23, the upper pulling rod 23 passes through the blocking plate 21, the top end of the blocking plate 21 is fixedly connected with a jack 22, the output end of the jack 22 is fixedly connected with the upper pulling rod 23, when in operation, the upper pulling rod 23 can be pulled upwards by operating the jack 22, thereby driving the upper half part of the separation shaft 19 to move upwards, realizing the effect of transmission separation, and when in combination, the pressure of the jack 22 is removed, and the first transmission gear 14 is reset under the action of gravity.
Example two
As shown in fig. 1 to 3, a comparative example one, in which another embodiment of the present invention is: the isolation pipe I1 and the isolation pipe II 2 are all arranged in a bending mode, the separation valve 3 is fixedly connected to one end close to the communication pipe I5, the isolation pipe I1 and the isolation pipe II 2 are matched with the bending effect of the isolation pipe I1 and the isolation pipe II 2 in working, the isolation pipe I1 is connected to one side of a main pipeline in parallel, and the separation valve 3 is arranged in the isolation pipe I1 and the isolation pipe II 2, so that more natural gas can be stored in the isolation pipe I1 and the isolation pipe II 2.
The isolation pipe I and the isolation pipe II 2 are fixedly connected through the flange, the communication pipe I5 and the communication pipe II 4 are fixedly connected with a natural gas pipeline through the flange, the output end of the output valve 11 is fixedly connected with a bent transmission pipe 8, and when the isolation pipe I and the isolation pipe II work, the output end is lowered through the arc transmission pipe 8, so that the isolation pipe I and the isolation pipe II are easier to install with output equipment, the whole equipment is tightly fixedly connected with the natural gas pipeline, and the maintenance and the replacement can be carried out through the disassembly of the flange.
When the natural gas pipeline is used for transmitting natural gas to external equipment, the existing natural gas pipeline is generally connected through a simple valve, the discharge pressure of the natural gas at an outlet is regulated through regulating the size of the valve, the method is relatively simple and crude, operation is difficult, and because the whole natural gas pipeline is communicated, if the safety accident is easy to occur due to improper operation, the separation valve 3 is opened through the arrangement of the first separation pipe 1 and the second separation pipe 2, high-pressure natural gas in the natural gas pipeline enters the first separation pipe 1 and the second separation pipe 2 through the separation valve 3, the pressure of the natural gas in the first separation pipe 1 is observed through the observation pressure gauge 7, when the pressure value reaches a preset standard, the separation valve 3 is closed, the first separation pipe 1 and the second separation pipe 2 are independent of the whole gas pipeline, then the natural gas in the first separation pipe 1 is output to the external equipment through the opening of the output valve 11, through the arrangement, the functions of secondary blocking and independent transmission are realized, any external equipment does not need to bear the ultrahigh pressure of the natural gas pipeline, but can input the natural gas with rated pressure into the first isolation pipe 1 through the main pipeline in advance according to the self bearing range and then transmit the natural gas into the equipment, the output process can be separated from the natural gas pipeline, the use safety is effectively improved, meanwhile, the problem of overlarge pressure in the pipeline can sometimes occur in the natural gas pipeline transportation, the pressure release equipment is needed to be prepared in the traditional pressure release, the precious time is delayed, if each pipeline output site is provided with the pressure regulating equipment, the separating valve 3 of all the equipment can be opened when the pressure is overlarge, the first isolation pipe 1 and the second isolation pipe 2 form a parallel road of the natural gas main pipeline, thereby effectively reducing the pressure of the main pipeline; through the arrangement of the pressure relief box 6, when the natural gas is input into the first isolation pipe 1, the redundant pressure cannot be removed by opening the separation valve 3 when the natural gas is input too much, and the redundant natural gas is input into the pressure relief box 6 by opening the pressure relief valve 25, so that the natural gas pressure in the first isolation pipe 1 and the second isolation pipe 2 can be adapted to equipment needing to be output; when a large amount of natural gas is required to be output, if the natural gas is firstly put into the first isolation pipe 1 according to the method and then is transmitted outwards, the time consumption is long, the air pressure in the first isolation pipe 1 can be firstly input to a preset value through the separation valve 3 of the second isolation pipe 2, then the separation valve 3 and the output valve 11 of the first isolation pipe 1 are simultaneously started to be provided with the transmission ports with the same size through the linkage assembly, the output pressure in the first isolation pipe 1 can be kept unchanged while the output valve 11 is continuously and outwards output, and the simultaneous opening and the simultaneous closing can be realized due to the existence of the linkage assembly, when a plurality of natural gas transport vehicles are required to be used for transporting the natural gas in a large amount, the rapid transmission can be realized, and meanwhile, when the vehicles are replaced, the output valve 11 and the separation valve 3 are simultaneously closed, so that the natural gas pressure in the first isolation pipe 1 is unchanged and does not need to be adjusted again; the first transmission gear 14 is driven to rotate through the rotation of the driving component, and the second transmission gear 15, the first gear 10 and the second gear 12 are simultaneously driven under the mutual meshing action, so that the effect of simultaneously controlling the separating valve 3 and the output valve 11 of the first isolation pipe 1 is realized; the diameters of the two stop plates are matched, and the rotation angles can be kept the same in the transmission process, so that the opening amplitude is kept consistent, and the stop plates 21 are used for covering a plurality of gear parts, so that the external influence is reduced; the worm 18 rotates to drive the worm wheel 16, the separating shaft 19 and the first transmission gear 14 to rotate, so that a driving effect is realized, the rotation of the worm 18 can be completed only by manually rotating the handle III 17, and meanwhile, the transmission of the worm wheel 16 and the worm 18 can only be transmitted to the worm wheel 16 by the worm 18 and cannot be reversely transmitted, so that the self-locking effect is also realized; when only one-way output is needed and no synchronization is needed, the upper half part of the separation shaft 19 is pulled upwards to prevent the first transmission gear 14 from being meshed with all gear parts, and the output valve 11 can be independently opened; the upper pulling rod 23 can be pulled upwards by operating the jack 22 to push the upper half part of the separation shaft 19 upwards, so that the effect of transmission separation is realized, and when the two parts are combined, the pressure of the jack 22 is removed, and the first transmission gear 14 is reset under the action of gravity.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a natural gas transmission pipeline pressure regulating device which characterized in that: including isolation pipe one (1) and isolation pipe two (2), isolation pipe one (1) and isolation pipe two (2) communicate each other, isolation pipe one (1) is kept away from the one end rigid coupling of isolation pipe two (2) and is had communicating pipe one (5), isolation pipe two (2) are kept away from the one end rigid coupling of isolation pipe one (1) and are had communicating pipe two (4), communicating pipe one (5) and communicating pipe two (4) all communicate with natural gas pipeline, isolation pipe one (1) and isolation pipe two (2) inboard all rigid coupling have separating valve (3), the outside of isolation pipe one (1) is connected with output valve (11), output valve (11) are located in the middle of two separating valves (3), the outside rigid coupling of isolation pipe one (1) has manometer (7).
2. A natural gas transportation pipeline pressure regulating device as claimed in claim 1, wherein: the outside of isolation pipe one (1) is provided with relief pressure case (6), the inside of relief pressure case (6) is hollow setting, one side rigid coupling that isolation pipe one (1) is close to in relief pressure case (6) has relief valve (25), the inboard intercommunication of relief valve (25) and isolation pipe one (1).
3. A natural gas transportation pipeline pressure regulating device as claimed in claim 1, wherein: the separating valve (3) connected with the first isolation pipe (1) comprises a first handle (9) of the control valve, the output valve (11) comprises a second handle (13) of the control valve, a linkage assembly is arranged between the first handle (9) and the second handle (13), and the linkage assembly is used for simultaneously driving the first handle (9) and the second handle (13) to rotate.
4. A natural gas transportation pipeline pressure regulating device according to claim 3, wherein: the linkage assembly comprises a first transmission gear (14) and a second transmission gear (15), the first transmission gear (14) and the second transmission gear (15) are meshed with each other, a first gear (10) is fixedly connected to the lower portion of a first handle (9), the first gear (10) is meshed with the second transmission gear (15), a second gear (12) is fixedly connected to the lower portion of a second handle (13), the second gear (12) is meshed with the first transmission gear (14), and a driving assembly is arranged below the first transmission gear (14) and used for driving the first transmission gear (14) to rotate.
5. The natural gas delivery pipeline pressure regulating device according to claim 4, wherein: the size of the first transmission gear (14) is the same as that of the second transmission gear (15), the size of the first gear (10) is the same as that of the second gear (12), a blocking plate (21) is arranged above the first transmission gear (14) and the second transmission gear (15), and the blocking plate (21) is fixedly connected with the outer side of the first isolation pipe (1).
6. A natural gas transportation pipeline pressure regulating device as defined in claim 5, wherein: the driving assembly comprises a worm wheel (16) and a worm (18), a handle III (17) is fixedly connected to the end portion of the worm (18), the worm wheel (16) and the worm (18) are meshed with each other, a separation shaft (19) is fixedly connected to the middle portion of the first transmission gear (14), the separation shaft (19) is rotationally connected with the first separation pipe (1), the worm wheel (16) is fixedly connected to the outer side of the separation shaft (19), and the worm wheel (16) is located below the first transmission gear (14).
7. The natural gas delivery pipeline pressure regulating device according to claim 6, wherein: the separating shaft (19) is arranged in an up-down sectional mode, the bottom of the separating shaft (19) located above is connected with the sliding rod (24) in a sliding mode, the sliding rod (24) is fixedly connected with the top of the separating shaft (19) located below, the first transmission gear (14) is fixedly connected with the upper half portion of the separating shaft (19), and the worm wheel (16) is fixedly connected with the lower half portion of the separating shaft (19).
8. A natural gas transportation pipeline pressure regulating device as claimed in claim 7, wherein: the top rigid coupling of release axle (19) has pull-up rod (23), pull-up rod (23) pass barrier plate (21), the top rigid coupling of barrier plate (21) has jack (22), the output and the pull-up rod (23) rigid coupling of jack (22).
9. A natural gas transportation pipeline pressure regulating device according to claim 3, wherein: the first isolation pipe (1) and the second isolation pipe (2) are arranged in a bending mode, and the separation valve (3) is fixedly connected to one end close to the first communicating pipe (5).
10. A natural gas transportation pipeline pressure regulating device as claimed in claim 9, wherein: the first isolation pipe (1) and the second isolation pipe (2) are fixedly connected through a flange, the first communicating pipe (5) and the second communicating pipe (4) are fixedly connected with a natural gas pipeline through the flange, and the output end of the output valve (11) is fixedly connected with a bent transmission pipe (8).
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| CN202310349099.5A CN116447518B (en) | 2023-04-03 | 2023-04-03 | Natural gas conveying pipeline pressure regulating device |
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| CN202310349099.5A CN116447518B (en) | 2023-04-03 | 2023-04-03 | Natural gas conveying pipeline pressure regulating device |
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