CN114151733B - Direct-buried underground pressure regulating box - Google Patents
Direct-buried underground pressure regulating box Download PDFInfo
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- CN114151733B CN114151733B CN202111353788.0A CN202111353788A CN114151733B CN 114151733 B CN114151733 B CN 114151733B CN 202111353788 A CN202111353788 A CN 202111353788A CN 114151733 B CN114151733 B CN 114151733B
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 122
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 53
- 230000003584 silencer Effects 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000009933 burial Methods 0.000 claims 2
- 230000003044 adaptive effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 44
- 239000002737 fuel gas Substances 0.000 abstract description 10
- 238000009826 distribution Methods 0.000 abstract description 5
- 238000005192 partition Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 13
- 238000009423 ventilation Methods 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 9
- 238000003825 pressing Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 238000004887 air purification Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention provides a direct-buried underground pressure regulating box, which belongs to the technical field of fuel gas pressure regulating equipment in a fuel gas transmission and distribution system, and comprises a box body, wherein the bottom layer of the box body is a pressure-bearing cavity, the top layer of the box body is a non-pressure-bearing cavity, the front end of the pressure-bearing cavity is communicated with an air inlet pipe, and the rear end of the pressure-bearing cavity is communicated with an air outlet pipe; wherein, the pressure-bearing cavity is internally provided with a filter device and a pressure regulator, the inlet of the filter device is connected with an air inlet pipe, the outlet of the filter device is connected with the inlet of the pressure regulator, and the outlet of the pressure regulator is communicated with an air outlet pipe; the non-pressure-bearing cavity is internally provided with a pressure regulating control device, and the monitoring control operation of the gas pressure regulating operation is realized through the pressure regulating control device. The direct-buried underground pressure regulating box adopts layered cavity layout, the pressure regulating execution area of the pressure regulating box is positioned at the lower layer, the pressure regulating control area is positioned at the upper layer, the working space is distributed clearly, the partition protection of equipment in the box is realized, the buried characteristic is met, and a larger, safer and more convenient operation space is provided for operators.
Description
Technical Field
The invention relates to the technical field of fuel gas pressure regulating equipment in a fuel gas transmission and distribution system, in particular to a direct-buried underground pressure regulating box.
Background
With the rapid development of urban construction in China, the requirements of domestic cities on urban aspects and environments are higher and higher, and the traditional floor type gas pressure regulating device and the matched open air pipeline thereof cannot meet the requirements of urban management. In addition, the urban land is increasingly tense, so that the public facilities tend to be changed from open air to underground. The gas pressure regulating device which occupies smaller area and is buried underground is a good prescription for solving the difficult problem of placing the gas device in urban management.
The direct buried underground pressure regulating equipment is not only as simple as the original on-ground equipment is installed underground, but also has to be safer and more reliable, is convenient for ground operation, and cannot have a limited space to bring personal safety problems. However, in order to realize the scheme of the underground pressure regulating box in the prior art, the following commonly adopted measures are: the existing overground equipment is simplified and spliced, then is arranged in a protective box body and is buried underground. This measure has the following problems:
1. directly utilize the general voltage regulator unit of equipment on ground:
the general pressure regulator has enough installation, maintenance and operation space when being installed on the ground, however, after being installed in a narrow space after being buried, the traditional flange installation mode is not applicable any more, and has no enough maintenance and operation space, which becomes a great cause of difficult maintenance and operation of the pressure regulating main body of the underground pressure regulating equipment. And general voltage regulators also have applicability problems in parameters:
① The pressure regulator meeting the pressure and flow parameters increases the difficulty of burying due to complex structure and larger volume; ② Meet the pressure regulator of buried structure and volume, because of the pressure parameter mismatch again, cause to carry out unstably.
2. The above-ground pipe connection form is not suitable for underground equipment:
Underground facilities have limited space and no way to follow the above-ground pipe connection forms, particularly flanges, threads, etc., depending on the space without fastening or removal. In the prior art, the traditional connection mode is still adopted, so that the underground space is enlarged, more space positions are occupied, and limited space exists in the protective box body, so that personnel are required to enter the limited space for operation, and serious personal safety hazards are necessarily caused.
3. Influence of flow regime:
The prior art has caused that the internal gas path changes more because of the installation of the general equipment, and the runner structure can not keep a good shape, thereby causing serious influence on the airflow state, and leading to unstable gas supply.
4. Layout problem:
the common structural layout of the underground pressure regulating box in the prior art is divided into three types of large-volume box type layout, highly integrated layout and open layout, wherein:
① The large-volume box type layout adopts a large-volume barrel or box body as a protective shell, and plugs in pipelines, pressure regulating equipment, safety protection equipment, filtering equipment and the like, and has the defects that: because of the huge volume, workers cannot operate and overhaul on the ground, so that the workers are required to enter the shell, the problem of limited space is caused, and huge potential safety hazards exist;
② In order to obtain smaller occupied space, the high-integration type layout adopts small-size voltage regulating equipment, so that the satisfaction of the voltage regulating equipment on working condition performance is greatly sacrificed, excessive compression spaces such as small-size voltage regulating equipment, safety protection equipment and filtering equipment are subjected to overlapping combination, so that maintenance difficulty is brought, the simplest maintenance is achieved, the overlapping combination is required to be lifted out of the ground, subsequent work can be carried out, the field work difficulty is greatly increased, and after the space is extremely compressed, various process lines, signal feedback pipelines and the like are complicated and messy, and the operability of maintenance and recovery is improved;
③ In order to solve the problem of limited space caused by complex internal structure and large space, the protective shell is made into an open type layout so as to increase ventilation performance, thereby avoiding potential safety hazards of personnel.
In summary, the underground pressure regulating box in the prior art is not innovative and developed from the aspects of performance, structure and ergonomics aiming at the buried characteristics, and more references are made to the original characteristics of the above-ground equipment. Such products often provide a negative user experience for users of the buried equipment, thereby affecting the popularization of the underground pressure regulating equipment.
Disclosure of Invention
The invention aims to provide a direct-buried underground pressure regulating box, which aims to realize more reasonable space layout of the pressure regulating box through reasonable and innovative structural design and provide safer and more convenient ground operation space for operators, thereby better meeting the buried characteristic of the pressure regulating box.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The direct-buried underground pressure regulating box is used for regulating the pressure of fuel gas and comprises a box body, wherein the box body is internally provided with layered cavities; specifically, the bottom layer of the box body is a pressure-bearing cavity, and the top layer of the box body is a non-pressure-bearing cavity; the front end of the pressure-bearing cavity is communicated with an air inlet pipe, and the rear end of the pressure-bearing cavity is communicated with an air outlet pipe; wherein:
a filter device and a pressure regulator are arranged in the pressure-bearing cavity;
the inlet of the filtering device is communicated with the gas inlet pipe, and the outlet of the filtering device is connected with the inlet of the pressure regulator;
The outlet of the pressure regulator is communicated with the air outlet pipe;
the non-pressure-bearing cavity is internally provided with a pressure regulating control device, and the monitoring control operation of the gas pressure regulating operation is realized through the pressure regulating control device.
Adopt this kind of layering cavity overall arrangement for the pressure regulating execution area of pressure regulating case and pressure regulating control district working space distribution are clear and definite, have realized the subregion protection to the incasement equipment, have also provided bigger, safer and more convenient operating space for operating personnel simultaneously.
In order to facilitate the buried installation of the whole pressure regulating box, in one embodiment of the application, the pressure bearing cavity and the non-pressure bearing cavity of the box body adopt detachable structures, specifically, the top plate of the pressure bearing cavity is installed on the top of the side wall of the pressure bearing cavity in a sealing way, the bottom of the non-pressure bearing cavity is provided with a through hole which is matched with the section size of the pressure bearing cavity, the non-pressure bearing cavity is covered in the upper part of the top plate of the pressure bearing cavity, namely, the center of the through hole is coaxial with the center of the section of the pressure bearing cavity, and the periphery of the through hole is connected with the top plate of the pressure bearing cavity through a screw.
Optionally, an installation supporting plate is arranged at the edge of the top plate of the pressure-bearing cavity and used for supporting and installing the non-pressure-bearing cavity; the mounting support plate and the top plate are integrally formed.
In order to improve the stability of the gas flow state, in one embodiment of the application, an air inlet cavity and an air outlet cavity are arranged in the pressure-bearing cavity; the filtering device is arranged in the air inlet cavity, and an inlet of the filtering device is separated from the inner wall of the air inlet cavity; the pressure regulator is arranged in the air outlet cavity, and an outlet of the pressure regulator is separated from the inner wall of the air outlet cavity; the side wall of the air inlet cavity is connected with the air inlet pipe, and the side wall of the air outlet cavity is connected with the air outlet pipe.
In order to improve the efficiency of the pressure regulator and achieve the balanced and stable regulation effect, in one embodiment of the application, a clean air cavity is arranged in the pressure-bearing cavity, the clean air cavity is arranged between the filtering device and the pressure regulator, an inlet of the clean air cavity is communicated with an outlet of the filtering device, and an outlet of the clean air cavity is communicated with an inlet of the pressure regulator.
In order to achieve the optimal air path structural design and ensure the stability of air supply, in another embodiment of the application, an air inlet cavity, a clean air cavity and an air outlet cavity are sequentially arranged in the pressure-bearing cavity; the filtering device is arranged in the air inlet cavity, the inlet of the filtering device is separated from the inner wall of the air inlet cavity, and the outlet of the filtering device is connected with the inlet of the clean air cavity; the pressure regulator is arranged in the air outlet cavity, the inlet of the pressure regulator is connected with the outlet of the air purifying cavity, and the outlet of the pressure regulator is separated from the inner wall of the air outlet cavity; the side wall of the air inlet cavity is connected with the air inlet pipe, and the side wall of the air outlet cavity is connected with the air outlet pipe.
Optionally, the air inlet cavity and the air outlet cavity are arranged in parallel left and right, and the air purifying cavity is arranged at the bottoms of the air inlet cavity and the air outlet cavity.
In one embodiment of the application, a muffler is arranged at the outlet of the top of the pressure regulator, the muffler is a cylindrical muffler, the inlet of the muffler is arranged at the bottom of the cylinder, and the outlet of the muffler is arranged at the wall of the cylinder. After the gas enters the silencer through the outlet at the top of the pressure regulator to be noise reduced, the low-pressure gas after the pressure reduction and noise reduction is discharged into the exhaust cavity from the outlet of the silencer to be buffered, and then the gas is led to the downstream through the gas outlet pipe.
Aiming at the buried characteristic of the buried pressure regulating box, in order to facilitate the overhaul of equipment in the pressure regulating area of the air outlet cavity in the box, in one embodiment of the application, the pressure regulator and the silencer are of quick-dismantling connection structures, and are specifically:
The top of the air outlet cavity is provided with a first through hole penetrating to the non-pressure-bearing cavity, and the diameter of the first through hole is matched with the horizontal diameter of the pressure regulator; a pressure regulating area cover plate is covered above the first through hole and is tightly arranged on the top surface of the top plate of the pressure-bearing cavity through screws;
The middle part of the pressure regulating area cover plate is provided with a second through hole, and the diameter of the second through hole is smaller than that of the first through hole and is matched with the horizontal diameter of the silencer; an overhaul cover plate is fixedly arranged at the top of the silencer, and the diameter of the overhaul cover plate is larger than the horizontal diameter of the silencer; the muffler penetrates through the second through hole downwards; the overhaul cover plate is covered above the second through hole and is tightly arranged on the top surface of the pressure regulating area cover plate through screws;
The bottom inlet of the silencer is in sealing butt joint with the top outlet of the pressure regulator, and the bottom inlet of the pressure regulator is in butt joint with the inlet of the air outlet cavity.
Aiming at the characteristic that the valve port pad of the pressure regulator needs to be frequently maintained and replaced, in one embodiment of the application, a valve seat of the pressure regulator is arranged in an outlet channel of a pressure regulating valve of the pressure regulator, and the valve seat is integrally in a truncated cone shape; the large end face of the valve seat is arranged on the valve body of the pressure regulating valve of the pressure regulator through a screw, and the small end face of the valve seat is arranged on the valve core of the pressure regulating valve in a pressure-bonding manner; the small end face of the valve seat is detachably provided with a valve port pad, and the valve port pad is used for sealing between the valve seat and the valve core of the pressure regulating valve.
Optionally, a gasket groove matched with the valve port pad is formed in the center part of the small end face of the valve seat, and the valve port pad is embedded in the gasket groove; the middle non-sealing action part of the valve port pad is tightly attached to the small end face of the valve seat through a round pressing plate, screw holes are formed in the center part of the round pressing plate and the center part of the small end face of the valve seat, and a screw penetrates through the screw holes in the center part of the round pressing plate, the valve port pad and the screw holes in the center part of the small end face of the valve seat in sequence, so that the valve port pad is pressed to the small end face of the valve seat by the round pressing plate, the valve port pad is firmly installed, and meanwhile, the valve port pad is convenient to detach.
Aiming at the buried characteristic of the buried pressure regulating box, in order to facilitate the overhaul of equipment in a filtering and cutting-off area of an air cavity coming from the box, in one embodiment of the application, the filtering device is also designed for a quick-dismantling connection structure, and is specifically:
A third through hole penetrating to the non-pressure-bearing cavity is formed in the top of the air inlet cavity, and the diameter of the third through hole is matched with the horizontal diameter of the filtering device; the top of the filtering device is in pressure connection with a filtering cover plate, and the diameter of the filtering cover plate is larger than the horizontal diameter of the filtering device; the bottom surface of the filtering cover plate covers the upper part of the third through hole and is tightly arranged on the top surface of the top plate of the pressure-bearing cavity through screws.
Optionally, a shut-off valve is connected to the gas flow channel at the top of the filtering device and used for conducting shut-off control on the gas flow; the stop valve includes disk seat and case, the case is quick assembly disassembly connection structure design too, and is specific:
A fourth through hole is formed in the middle of the filter cover plate, and the diameter of the fourth through hole is smaller than that of the third through hole and is matched with the horizontal diameter of the valve core; the valve core penetrates through the fourth through hole downwards to be connected with the valve seat; the top of the valve core is fixedly provided with a valve core cover plate, and the valve core cover plate is covered above the fourth through hole and is tightly arranged on the top surface of the filter cover plate through screws.
Through the quick-disassembly connection structure design of the pressure regulator, the silencer, the pressure regulator valve seat, the filtering device and the valve core, the corresponding device can be installed and disassembled through fastening or dismantling of screws, the operation is simple, convenient and quick, and timely and convenient overhaul of equipment in the buried pressure regulating box is facilitated.
In order to improve the rationality of the spatial layout of the non-pressure-bearing cavity serving as the pressure-regulating monitoring control area, so that the layout of the pressure-regulating control device is tidier and clearer, and the operation is easier and easier to get into the hands, in one embodiment of the present application, the layout design is performed on the pressure-regulating control device of the non-pressure-bearing cavity, and specifically, the pressure-regulating control device comprises: the hydraulic control system comprises a shut-off valve actuator, a front pressure controller, a rear pressure controller, a director, a diffusing assembly and a manual venting valve, wherein the shut-off valve actuator is arranged in a non-pressure-bearing cavity space above the shut-off valve and is connected with the shut-off valve; the front pressure controller is arranged in a non-pressure-bearing cavity space above the air inlet cavity and is connected with the air inlet cavity; the rear pressure controller is arranged in a non-pressure-bearing cavity space above the air outlet cavity and is connected with the air outlet cavity; the director is arranged on one side of the rear pressure controller and is connected with the pressure regulator; the manual air release valve is arranged in a non-pressure-bearing cavity space above the air outlet cavity and is connected with the air outlet cavity.
Optionally, preceding pressure controller includes preceding pressure root valve, preceding pressure instrument and gets pressure feedback signal pipe interface, back pressure controller includes back pressure root valve, back pressure instrument and gets pressure feedback signal pipe interface, the subassembly of diffusing includes root valve, pressure differential instrument, the valve of diffusing and communicates the outside diffusing pipe of valve export and box of diffusing.
In one embodiment of the application, the left side and the right side of the unpressurized cavity are also respectively provided with a low-level ventilation pipe and a high-level ventilation pipe.
In one embodiment of the application, the top of the box body is also hinged with a box cover.
In one embodiment of the application, the cover is opened and closed by a gas strut connecting the housing to the cover.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention relates to a direct-buried underground pressure regulating box, which is characterized in that the space in the box body is designed into a layered cavity layout of an upper non-pressure-bearing cavity and a lower pressure-bearing cavity, the pressure-bearing cavity part provided with a filtering device and a pressure regulator is positioned at the bottom layer, so that the pressure-bearing cavity part is connected with a gas pipeline to perform gas filtering and pressure regulating operations, and control operations of cutting off, pressure regulating, trial regulation and the like performed by an operator on the pressure regulating box are performed in the non-pressure-bearing cavity at the top layer; the layered cavity layout ensures that the pressure regulating execution area and the pressure regulating control area of the pressure regulating box are clear in working space distribution, realizes the partition protection of equipment in the box, and also provides larger, safer and more convenient operation space for operators. Meanwhile, the pressure-bearing cavity and the non-pressure-bearing cavity of the box body are of detachable structures, so that the operation of burying the pressure regulating box is facilitated, and the burying characteristic of the pressure regulating box is better met.
2. The invention relates to a direct-buried underground pressure regulating box, which is used for carrying out gas circuit structural design on a pressure-bearing cavity which is a core area for filtering and regulating gas, and the gas flow direction in the whole pressure regulating process is as follows: the air inlet pipe, the air inlet cavity, the filtering device, the clean air cavity, the pressure regulator, the air outlet cavity and the air outlet pipe have simple and stable structure, clear and definite air flow direction, and the air inlet cavity, the clean air cavity and the air outlet cavity are combined to form 3 buffer areas, so that the influence of a complex air channel on the flow state is avoided, the flow state of the air flow is stable, and the stability of air supply can be effectively ensured.
3. The direct buried underground pressure regulating box of the invention abandons the traditional flange mounting mode on the mounting structure of key equipment such as a pressure regulator, a silencer connected with the pressure regulator, a filter device, a cut-off valve connected with the filter device, and the like, adopts a quick-dismantling structure design, and can be dismantled and assembled in a non-pressure-bearing cavity, thereby not only meeting the structural requirement of the pressure regulating box for convenient ground operation after being buried, but also being easier for equipment maintenance.
4. The direct-buried underground pressure regulating box has the advantages that the layout of the pressure regulating control device in the non-pressure-bearing cavity is neat, clear and easy to understand, the state instrument of the underground pressure regulating box is observed, the operations of cutting off and regulating pressure and the debugging are all carried out in the non-pressure-bearing cavity, the operation difficulty is low, the operation is easy to take hands, the learning cost of a user can be reduced, and the damage of misoperation to pressure regulating box equipment can be avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the installation structure of the pressure-bearing cavity and the non-pressure-bearing cavity of the present invention.
FIG. 3 is a schematic view of the direction of the internal air flow according to the present invention.
Fig. 4 is an exploded view showing the quick-release connection structure of the pressure regulator, muffler, filter device and valve cartridge of the present invention.
Fig. 5 is an exploded view of a quick release connection structure for a valve seat in a pressure regulator according to the present invention.
FIG. 6 is a schematic plan view of a non-pressurized cavity pressure regulating control device according to the present invention.
Fig. 7 is a schematic view of a partial sectional structure of the case cover of the present invention when opened.
Reference numerals:
1-a box body, 11-a pressure-bearing cavity, 11 a-a top plate and 11a' -mounting support plates;
111-an air supply cavity, 111 a-a third through hole, 112-a clean air cavity, 113-an air outlet cavity, 113 a-a first through hole;
12-unpressurized cavity, 12 a-through hole, 12 b-low level ventilation pipe, 12 c-high level ventilation pipe;
13-case lid, 13 a-reinforcing rib, 13 b-gas stay
2-An air supply pipe;
3-an air outlet pipe;
4-filtering means, 41-filtering cover plate, 41 a-fourth through hole;
5-voltage regulator, 51-voltage regulating area cover plate, 51 a-second through hole;
52-valve seat, 521-large end face, 522-small end face, 53-pressure regulating valve core, 54-valve port pad and 55-pressing plate;
6-a screw;
7-muffler, 71-access panel;
8-valve core, 81-valve core cover plate;
9-pressure regulating control device, 91-shut-off valve actuator, 92 director, 93-manual emptying valve, 94-front pressure root valve, 95-front pressure instrument, 96-pressure taking feedback signal pipe interface, 97-including back pressure root valve, 98-back pressure instrument, 99-relief root valve, 910-pressure difference instrument, 911-relief valve, 912-relief pipe.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the embodiment provides a direct-buried underground pressure regulating box for regulating gas pressure, which comprises a box body 1, wherein the box body 1 is internally provided with layered cavity layout, specifically, the bottom layer of the box body 1 is a pressure-bearing cavity 11, the top layer of the box body 1 is a non-pressure-bearing cavity 12, the front end of the pressure-bearing cavity 11 is communicated with a gas inlet pipe 2, and the rear end is communicated with a gas outlet pipe 3; wherein, the pressure-bearing cavity 11 is internally provided with a filter device 4 and a pressure regulator 5, the inlet of the filter device 4 is communicated with the gas inlet pipe 2, the outlet of the filter device 4 is connected with the inlet of the pressure regulator 5, and the outlet of the pressure regulator 5 is communicated with the gas outlet pipe 3; the non-pressure-bearing cavity 12 is internally provided with a pressure regulating control device 9, and the monitoring control operation of the gas pressure regulating operation is realized through the pressure regulating control device 9.
When the pressure-bearing cavity 11 with the filter device 4 and the pressure regulator 5 arranged in the pressure regulating box is buried underground, so that the pressure-bearing cavity is connected with a gas pipeline to perform gas filtering and pressure regulating, and control operations such as cutting off, pressure regulating, trial regulation and the like performed by an operator on the pressure regulating box are performed in the upper non-pressure-bearing cavity 12. The layered cavity layout ensures that the pressure regulating execution area and the pressure regulating control area of the pressure regulating box are clear in working space distribution, realizes the partition protection of equipment in the box, and simultaneously provides larger, safer and more convenient operation space for operators.
As an alternative implementation scenario, in this implementation scenario, as shown in fig. 2, a detachable structure is adopted for the pressure-bearing cavity 11 and the non-pressure-bearing cavity 12 of the box body 1; specifically, the top plate 11a of the pressure-bearing cavity 11 is mounted on the top of the side wall of the pressure-bearing cavity 11 in a sealing manner, the bottom of the non-pressure-bearing cavity 12 is provided with a through hole 12a corresponding to the cross section size of the pressure-bearing cavity 11, the non-pressure-bearing cavity 12 is covered on the top of the top plate of the pressure-bearing cavity 11, namely, the center of the through hole 12a is coaxial with the cross section center of the pressure-bearing cavity 11, and the periphery of the through hole 12a is connected with the top plate 11a of the pressure-bearing cavity through the screw 6.
When the box body is installed, the pressure-bearing cavity 11 of the box body 1 can be firstly installed in a buried mode, when the pressure-bearing cavity 11 is completely installed, the non-pressure-bearing cavity 12 is covered above the pressure-bearing cavity top plate 11a, and then the non-pressure-bearing cavity 12 is connected to the top surface of the pressure-bearing cavity top plate 11a through the screw 6, so that inconvenience in buried operation caused by occupation of large volume space of the non-pressure-bearing cavity 12 during the buried installation is avoided; meanwhile, aiming at the condition that the unpressurized cavity 12 is more close to the ground and is easy to damage, the detachable screw connection structure also provides a convenient operation foundation for later maintenance and replacement of the unpressurized cavity 12.
In this embodiment, a mounting support plate 11a 'is provided at the edge of the top plate 11a of the pressure-bearing cavity 11, for supporting and mounting the non-pressure-bearing cavity 12, and the mounting support plate 11a' and the top plate 11a are integrally formed. By designing the mounting pallet 11a', the convenience and stability of connection of the non-pressure-bearing chamber 12 and the pressure-bearing chamber 11 can be improved.
As an optional implementation scenario, in the implementation scenario, an air inlet cavity 111 and an air outlet cavity 113 are arranged in the pressure-bearing cavity 11, the air inlet pipe 2 is communicated with the air inlet cavity 111, and the air outlet pipe 3 is communicated with the air outlet cavity 113; the filter device 4 is arranged in the air inlet cavity 111, and the inlet of the filter device 4 is separated from the inner wall of the air inlet cavity 111; the pressure regulator 5 is arranged in the air outlet cavity 113, and the outlet of the pressure regulator 5 is separated from the inner wall of the air outlet cavity 113.
By arranging the air inlet cavity 111 and the air outlet cavity 113 in the pressure-bearing cavity 11 and installing the filtering device 4 and the pressure regulator 5 in the air inlet cavity 111 and the air outlet cavity 113 respectively, the air inlet cavity 111 forms a filtering area, and the air outlet cavity 113 forms a pressure regulating area; when the fuel gas enters the gas inlet cavity 111 from the gas inlet pipe 2 for filtering, the gas inlet cavity 111 provides buffering and gathering space for the entering gas flow, so that the fuel gas can enter the filtering device 4 for filtering in a full and orderly manner; after the filtered fuel gas enters the pressure regulator 5 to complete pressure regulation, the fuel gas firstly flows out to the air outlet cavity 113, and then flows into the air outlet pipe 3 from the air outlet cavity 113. The airflow direction of the whole process is as follows: the air flow direction is clear and definite, and the air flow state is stable, so that the air supply is more stable.
As an optional implementation scenario, in this implementation scenario, a clean air chamber 112 is disposed in the pressure-bearing chamber 11, the clean air chamber 112 is disposed between the filtering device 4 and the pressure regulator 5, an inlet of the clean air chamber 112 is connected to an outlet of the filtering device 4, and an outlet of the clean air chamber 112 is connected to an inlet of the pressure regulator 5.
Through setting up clean air cavity 112, after the gas filters through filter equipment 4, collect to clean air cavity 112 earlier and cushion stably, and the air current after the buffering is stabilized reentrant voltage regulator 5, can improve the pressure regulating effect.
As an optional implementation scenario, in the implementation scenario, an air inlet cavity 111, an air purifying cavity 112 and an air outlet cavity 113 are sequentially arranged in the pressure-bearing cavity 11, the air inlet pipe 2 is communicated with the air inlet cavity 111, and the air outlet pipe 3 is communicated with the air outlet cavity 113; the filter device 4 is arranged in the air inlet cavity 111, the inlet of the filter device 4 is separated from the inner wall of the air inlet cavity 111, and the outlet of the filter device 4 is connected with the inlet of the clean air cavity 112; the pressure regulator 5 is arranged in the air outlet cavity 113, and an inlet of the pressure regulator 5 is connected with an outlet of the clean air cavity 112, and an outlet of the pressure regulator 5 is separated from the inner wall of the air outlet cavity 113.
Through the structural arrangement of the air inlet cavity 111, the air purifying cavity 112 and the air outlet cavity 113, upstream fuel gas enters the air inlet cavity 111 from the air inlet pipe 2, after being purified by the filtering device 4 in the air inlet cavity 111, the air enters the air purifying cavity 112 downwards, the air purifying cavity 112 at the bottom of the air inlet cavity 111 provides a large and flat collecting buffer space for the filtered air, the air purifying cavity 112 after buffering and stabilization upwards enters the pressure regulator 5, and after the pressure regulator 5 regulates the pressure, the air enters the air outlet cavity 113 through the outlet at the top of the pressure regulator 5. As shown in fig. 3, the whole air path has a simple and stable structure, and is combined with 3 buffer areas of the air inlet cavity, the air purifying cavity and the air outlet cavity, so that the influence of a complex air path on the flow state is avoided, and the stability of air supply can be effectively ensured.
In this implementation scenario, the structural layout of the air supply chamber 111, the air purification chamber 112 and the air outlet chamber 113 is: the air inlet cavity 111 and the air outlet cavity 113 are arranged in parallel left and right, the air purifying cavity 112 is arranged at the bottoms of the air inlet cavity 111 and the air outlet cavity 113, and the cross section of the air purifying cavity 112 coincides with the vertical projection of the total cross section of the air inlet cavity 111 and the air outlet cavity 113. By adopting the structural layout, the gas entering the pressure regulator 5 can not be fully buffered and stabilized, the plane occupied area of the pressure regulating box can be reduced, the pressure regulating control device 9 in the non-pressure-bearing cavity 12 is more compact, meanwhile, the clean gas cavity 112 without any equipment therein is arranged at the bottommost layer, and the operation difficulty that the clean gas cavity 112 is not damaged due to the additional attention when equipment in the gas inlet cavity 111 and the gas outlet cavity 113 is overhauled can be avoided.
As an optional implementation scenario, in this implementation scenario, the outlet of the top of the pressure regulator 5 is provided with a cylindrical muffler 7, the inlet of the cylindrical muffler 7 is disposed at the bottom of the cylinder, and the outlet is disposed at the wall of the cylinder. After the gas enters the muffler 7 through the outlet at the top of the pressure regulator 5 to be subjected to noise reduction, the low-pressure gas subjected to pressure reduction and noise reduction is discharged into the exhaust cavity 113 from the outlet of the muffler 7 to be buffered, and then is led to the downstream through the air outlet pipe 3.
As shown in fig. 4, in this embodiment, the pressure regulator 5 and the muffler 7 are both quick-detachable connection structures; specifically, a first through hole 113a penetrating to the non-pressure-bearing cavity is arranged at the top of the air outlet cavity 113, and the diameter of the first through hole 113a is adapted to the horizontal diameter of the pressure regulator 5; a pressure regulating area cover plate 51 is covered above the first through hole 113a, and the pressure regulating area cover plate 51 is tightly arranged on the top surface of the top plate 11a of the pressure bearing cavity 11 through a screw 6; the middle part of the pressure regulating area cover plate 51 is provided with a second through hole 51a, and the diameter of the second through hole 51a is smaller than that of the first through hole 113a and is matched with the horizontal diameter of the silencer 7; an overhaul cover plate 71 is fixedly arranged at the top of the silencer 7, and the diameter of the overhaul cover plate 71 is larger than the horizontal diameter of the silencer 7; the muffler 7 penetrates the second through hole 51a downward; the access cover plate 71 covers the second through hole 51a and is tightly arranged on the top surface of the pressure regulating area cover plate 51 through the screw 6; the bottom inlet of the silencer 7 is in sealing abutting connection with the top outlet of the pressure regulator 5, and the bottom inlet of the pressure regulator 5 is in abutting connection with the inlet of the air outlet cavity 113. A positioning table can be arranged on one side of the pressure regulator 5 at the inlet of the air outlet cavity 113, so that the bottom inlet of the pressure regulator 5 can be conveniently inserted.
During installation, the bottom inlet of the pressure regulator 5 is vertically inserted into the inlet of the air outlet cavity 113 to be positioned, the muffler 7 penetrates through the second through hole 51a downwards from the non-pressure-bearing cavity 12, the bottom inlet of the muffler 7 is contacted with the top outlet of the pressure regulator 5, the bottom surface of the overhaul cover plate 71 is contacted with the top surface of the pressure regulating area cover plate 51, and then the overhaul cover plate 71 is tightly fixed on the top surface of the pressure regulating area cover plate 51 through the screw 6; in the tight process, the overhaul cover plate 71 is stressed downwards to be tightly propped, and the muffler 7 is driven to be tightly propped downwards, so that the muffler 7 is tightly propped against the outlet of the top of the pressure regulator 5, the pressure is downwards transmitted, the bottom of the pressure regulator 5 and the outlet of the air purifying cavity 112 form pressure grafting, and the stable installation of the pressure regulator 5 is realized. When the muffler is disassembled, the muffler 7 can be pulled out only by removing the screw 6 on the overhaul cover plate 71, the top outlet of the pressure regulator 5 is exposed, and the overhaul of the muffler 7 and the valve port pad of the valve seat at the outlet channel of the top of the pressure regulator 5 are very convenient to replace.
When the pressure regulator 5 body needs to be overhauled, the whole assembly (comprising the silencer 7 and the overhauling cover plate 71) connected to the pressure regulating area cover plate 51 can be pulled out only by removing the screw 6 on the pressure regulating area cover plate 51, and the pressure regulator 5 is wholly lifted out for overhauling through the first through hole 113 a.
As an optional implementation scenario, in this implementation scenario, the valve seat 52 of the pressure regulator 5 is also designed as a quick-detachable connection structure, specifically, as shown in fig. 5, the valve seat 52 is installed in the outlet channel of the pressure regulating valve of the pressure regulator 5, and the valve seat 52 is integrally shaped as a truncated cone; the large end face 521 of the valve seat 52 is arranged on the valve body of the pressure regulating valve through a screw 6, and the small end face 522 of the valve seat 52 is arranged on the valve core 53 of the pressure regulating valve in a pressure-bonding manner; the valve port pad 54 is detachably arranged on the small end surface 522 of the valve seat 52, and is used for sealing between the valve seat 52 and the valve core 53 of the pressure regulating valve.
During installation, one end of the small end face 522 of the valve seat 52 is inserted into the pressure regulating valve through the pressure regulating valve outlet channel, so that the valve port gasket 54 abuts against the port of the valve core 53 of the pressure regulating valve, and the sealing between the valve seat 52 and the valve core 53 of the pressure regulating valve is realized; after the end face positioning, the large end face 521 of the valve seat 52 is tightly installed on the valve body through the screw 6, so that the installation is completed; when the valve port pad 54 needs to be maintained or replaced, the whole valve seat assembly (comprising the valve seat 52 and the valve port pad 54) can be easily pulled out from the outlet side of the pressure regulating valve only by detaching the screw 6 and detaching the valve seat large end face 521 from the valve body, and then the valve port pad 54 is detached for maintenance or replacement. The whole process is simple and quick to operate, the pressure regulator is not required to be disassembled, and the quick assembly and disassembly structure of the pressure regulator body is combined, so that the valve port pad 54 is maintained and replaced efficiently and conveniently.
In this embodiment, a gasket groove (not shown in the figure) matched with the valve port pad 54 is provided at the center of the small end surface 522 of the valve seat 52, and the valve port pad 54 is embedded in the gasket groove, so as to improve the installation efficiency and service life of the valve port pad 54; the middle non-sealing action part of the valve port pad 54 is tightly attached to the small end face 522 of the valve seat 52 through a circular pressing plate 55, specifically, screw holes are formed in the central part of the circular pressing plate 55 and the central part of the small end face 522 of the valve seat 52, a screw 6 sequentially penetrates through the screw holes in the central part of the circular pressing plate 55, the valve port pad 54 and the screw holes in the central part of the small end face 522 of the valve seat, so that the valve port pad 54 is pressed and covered on the small end face 522 of the valve seat 52 by the circular pressing plate 55, the valve port pad 54 is firmly installed, and meanwhile, the valve port pad 54 is convenient to detach.
As an optional implementation scenario, in this implementation scenario, the filtering device 4 is also designed with a quick-detachable connection structure, specifically, as shown in fig. 4, a third through hole 111a penetrating to the non-pressure-bearing cavity 12 is provided at the top of the air supply cavity 111, and the diameter of the third through hole 111a is adapted to the horizontal diameter of the filtering device 4; the top of the filter device 4 is in pressure connection with a filter cover plate 41, and the diameter of the filter cover plate 41 is larger than the horizontal diameter of the filter device 4; the bottom surface of the filter cover 41 is covered over the third through hole 111a and is tightly mounted on the top surface of the top plate 11a of the pressure-bearing chamber by the screw 6.
During installation, the outlet at the bottom of the filtering device 4 is vertically inserted into the outlet of the air inlet cavity 111 for positioning, and a positioning table can be arranged on one side of the outlet of the air inlet cavity 111, which is positioned on the filtering device 4, so that the insertion of the outlet at the bottom of the filtering device 4 is facilitated; covering the filtering cover plate 41 above the third through hole 111a, and tightly fixing the filtering cover plate 41 on the top of the top plate 11a of the pressure-bearing cavity 11 through the screw 6; in the tightening process, the filter cover 41 is pressed downwards against the top of the filter device 4 to form a press connection to the filter device 4, so that the filter device 4 is stably installed. When the filter is disassembled, the filter device 4 can be pulled out only by removing the screw 6 on the filter cover plate 41, and overhauling or filter element replacement can be performed, so that the filter is convenient and quick.
As an optional implementation scenario, in the implementation scenario, a gas flow channel at the top of the filtering device 4 is connected with a shut-off valve for performing shut-off control on the gas flow; the cut-off valve comprises a valve seat and a valve core 8, the valve core 8 is also designed for a quick-dismounting connection structure, specifically, as shown in fig. 4, a fourth through hole 41a is arranged in the middle of the filter cover plate 41, and the diameter of the fourth through hole 41a is smaller than that of the third through hole 111a and is matched with the horizontal diameter of the valve core 8; the valve core 8 penetrates through the fourth through hole 41a downwards to be connected with a valve seat; the top of the valve core 8 is fixed with a valve core cover plate 81, and the valve core cover plate 81 covers the fourth through hole 41a and is tightly arranged on the top surface of the filter cover plate 41 through the screw 6.
When the valve core 8 is required to be overhauled or the valve port pad is required to be replaced, the valve core 8 can be pulled out of the fourth through hole 41a only by removing the screw 6 on the valve core cover plate 81, and the overhauling or the valve port pad replacement is simple, convenient and quick.
As an optional implementation scenario, in this implementation scenario, the voltage regulation control device 9 includes: the shut-off valve actuator 91, the front pressure controller, the rear pressure controller, the director 92, the diffusing component and the manual venting valve 93, wherein the shut-off valve actuator 91 is arranged on the valve core cover plate 81 of the non-pressure-bearing cavity space above the shut-off valve and is connected with the shut-off valve; the front pressure controller is arranged on the top surface of the pressure-bearing cavity top plate 11a above the air-coming cavity 111 and is connected with the air-coming cavity 111; the rear pressure controller is arranged on the top surface of the pressure-bearing cavity top plate 11a above the air outlet cavity 113 and is connected with the air outlet cavity 113; the director 92 is arranged on the bottom plate of the non-pressure-bearing cavity 12 at one side of the rear pressure controller and is connected with the pressure regulator 5; the diffusing component is arranged on one side of the cut-off valve actuator and is connected with the air inlet cavity 111 and the air outlet cavity 113; the manual air release valve 93 is disposed on the top surface of the pressure-bearing cavity top plate 11a above the air outlet cavity 113 and connected to the air outlet cavity 113.
Specifically, as shown in fig. 6, the front pressure controller includes a front pressure root valve 94, a front pressure meter 95 and a pressure taking feedback signal pipe interface 96, the rear pressure controller includes a rear pressure root valve 97, a rear pressure meter 98 and a pressure taking feedback signal pipe interface 96, and the diffusing assembly includes a diffusing root valve 99, a differential pressure meter 910, a diffusing valve 911 and a diffusing pipe 912 communicating the outlet of the diffusing valve with the outside of the tank.
The layout of the pressure regulating control device in the non-pressure-bearing cavity is neat, clear and easy to understand, the underground pressure regulating box is observed by a state instrument, and the operations of cutting off and regulating pressure and debugging are carried out in the non-pressure-bearing cavity, so that the operation difficulty is low, the operation is easy to get on hand, the learning cost of a user can be reduced, and the damage of misoperation to pressure regulating box equipment can be avoided.
As an alternative implementation scenario, in this implementation scenario, the left and right sides of the unpressurized cavity 12 are respectively provided with a low-level ventilation pipe 12b and a high-level ventilation pipe 12c, as shown in fig. 1. By providing the low-level ventilation pipe 12b and the high-level ventilation pipe 12c, the ventilation and heat dissipation effects of the unpressurized cavity 12 can be improved.
As an alternative implementation scenario, in this implementation scenario, the top of the case 1 is further hinged with a case cover 13, as shown in fig. 7; the inner side of the case cover 13 is provided with a reinforcing rib 13a; through the design of case lid 13 structure, can improve the safety protection level of surge tank. Meanwhile, the box cover 13 is opened and closed through the air stay bar 13b connecting the box body 1 and the box cover 13, so that the box is safe and attractive, and the opening and closing operation of the box cover 13 is convenient.
It should be noted that, the devices in the present invention all have corresponding energy supply, and those skilled in the art should know that the present invention is not specifically described; the specific model of each device can be selected according to specific conditions, so that corresponding functions can be realized, and the invention is not particularly limited; the connection relationship among the instruments, devices and equipment is a connection conventionally understood in the art, and those skilled in the art should know that the present invention is not specifically described.
In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", "top", "bottom", "one side", etc. indicate orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships in which the product of the present invention is conventionally put in use, or orientations or positional relationships that are conventionally understood by those skilled in the art, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the present invention.
Meanwhile, unless explicitly specified and limited otherwise, technical or scientific terms used herein should be interpreted in a general sense as understood by those having ordinary skill in the art to which the present invention pertains, and terms such as "disposed," "connected," "mounted," and the like should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the mechanical connection can be realized, and the welding connection can be realized; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances. Also, the terms "first," "second," "third," "fourth," and the like herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a direct buries formula underground pressure regulating box for gas pressure adjusts, its characterized in that includes the box, the box includes:
the pressure-bearing cavity is positioned at the bottom layer of the box body; the pressure-bearing cavity is internally provided with a filter device and a pressure regulator, an inlet of the filter device is communicated with an air inlet pipe, an outlet of the filter device is connected with an inlet of the pressure regulator, and an outlet of the pressure regulator is communicated with an air outlet pipe;
The non-pressure-bearing cavity is arranged above the pressure-bearing cavity; the non-pressure-bearing cavity is internally provided with a pressure regulating control device, and the monitoring control operation of the gas pressure regulating operation is realized through the pressure regulating control device;
The pressure-bearing cavity is internally provided with an air inlet cavity, a clean air cavity and an air outlet cavity in sequence; the filtering device is arranged in the air inlet cavity, the inlet of the filtering device is separated from the inner wall of the air inlet cavity, and the outlet of the filtering device is connected with the inlet of the clean air cavity; the pressure regulator is arranged in the air outlet cavity, the inlet of the pressure regulator is connected with the outlet of the air purifying cavity, and the outlet of the pressure regulator is separated from the inner wall of the air outlet cavity; the side wall of the air inlet cavity is connected with the air inlet pipe, and the side wall of the air outlet cavity is connected with the air outlet pipe;
the air inlet cavity and the air outlet cavity are arranged in parallel left and right, and the air purifying cavity is arranged at the bottoms of the air inlet cavity and the air outlet cavity;
a muffler is arranged at the outlet of the pressure regulator; the silencer is a cylindrical silencer, an inlet of the silencer is arranged at the bottom of the cylinder, and an outlet of the silencer is arranged on the wall of the cylinder;
The top of the air outlet cavity is provided with a first through hole penetrating to the non-pressure-bearing cavity, and the diameter of the first through hole is matched with the horizontal diameter of the pressure regulator; a pressure regulating area cover plate is covered above the first through hole and is tightly arranged on the top surface of the top plate of the pressure-bearing cavity through screws;
The middle part of the pressure regulating area cover plate is provided with a second through hole, and the diameter of the second through hole is smaller than that of the first through hole and is matched with the horizontal diameter of the silencer; an overhaul cover plate is fixedly arranged at the top of the silencer, and the diameter of the overhaul cover plate is larger than the horizontal diameter of the silencer; the muffler penetrates through the second through hole downwards; the overhaul cover plate is covered above the second through hole and is tightly arranged on the top surface of the pressure regulating area cover plate through screws;
The bottom inlet of the silencer is in sealing butt joint with the top outlet of the pressure regulator, and the bottom inlet of the pressure regulator is in butt joint with the inlet of the air outlet cavity;
The valve seat of the pressure regulator is arranged in the outlet channel of the pressure regulating valve of the pressure regulator, and the valve seat is integrally in a truncated cone shape; the large end face of the valve seat is arranged on the valve body of the pressure regulating valve of the pressure regulator through a screw, and the small end face of the valve seat is arranged on the valve core of the pressure regulating valve in a pressure-bonding manner; the small end face of the valve seat is detachably provided with a valve port pad, and the valve port pad is used for sealing between the valve seat and the valve core of the pressure regulating valve.
2. The direct burial underground pressure regulating tank of claim 1, wherein a third through hole penetrating to the non-pressure bearing cavity is arranged at the top of the air inlet cavity, and the diameter of the third through hole is matched with the horizontal diameter of the filtering device; the top of the filtering device is in pressure connection with a filtering cover plate, and the diameter of the filtering cover plate is larger than the horizontal diameter of the filtering device; the bottom surface of the filtering cover plate covers the upper part of the third through hole and is tightly arranged on the top surface of the top plate of the pressure-bearing cavity through screws.
3. The direct burial underground pressure regulating tank of claim 2, wherein a shut-off valve is connected to the gas flow passage at the top of the filter device, and the shut-off valve comprises a valve seat and a valve core;
A fourth through hole is formed in the middle of the filter cover plate, and the diameter of the fourth through hole is smaller than that of the third through hole and is matched with the horizontal diameter of the valve core; the valve core penetrates through the fourth through hole downwards to be connected with the valve seat; the top of the valve core is fixedly provided with a valve core cover plate, and the valve core cover plate is covered above the fourth through hole and is tightly arranged on the top surface of the filter cover plate through screws.
4. The direct buried underground pressure regulating box according to claim 1, wherein the top plate of the pressure bearing cavity is mounted on the top of the side wall of the pressure bearing cavity in a sealing manner, a through hole which is adaptive to the cross section size of the pressure bearing cavity is formed in the bottom of the non-pressure bearing cavity, the non-pressure bearing cavity is covered above the top plate of the pressure bearing cavity, the center of the through hole is coaxial with the center of the cross section of the pressure bearing cavity, and the periphery of the through hole is connected with the top plate of the pressure bearing cavity through a screw.
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| CN117948452B (en) * | 2024-03-26 | 2024-05-28 | 瑞星久宇燃气设备（成都）有限公司 | Direct-acting axial flow core-pulling voltage regulator for direct burial and parameter acquisition method |
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