CN216447922U

CN216447922U - Direct-buried underground pressure regulating box

Info

Publication number: CN216447922U
Application number: CN202122800499.2U
Authority: CN
Inventors: 王川; 张鑫; 王林; 熊伟
Original assignee: Ruixing Joyu Gas Equipment Chengdu Co ltd
Current assignee: Ruixing Joyu Gas Equipment Chengdu Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-05-06
Anticipated expiration: 2031-11-16

Abstract

The utility model provides a direct-buried underground pressure regulating box, which belongs to the technical field of gas pressure regulating equipment in a 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 a gas inlet pipe, and the rear end of the pressure-bearing cavity is communicated with a gas outlet pipe; the pressure-bearing cavity is internally provided with a filtering device and a pressure regulator, the inlet of the filtering device is connected with an air inlet pipe, the outlet of the filtering device is connected with the inlet of the pressure regulator, and the outlet of the pressure regulator is communicated with an air outlet pipe; and a pressure regulating control device is arranged in the non-pressure-bearing cavity, 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 a layered cavity layout, the pressure regulating execution region of the pressure regulating box is positioned at the lower layer, the pressure regulating control region is positioned at the upper layer, the working space distribution is clear, the partitioned protection of equipment in the box is realized, the buried characteristic is met, and meanwhile, a larger, safer and more convenient operation space is provided for operators.

Description

Direct-buried underground pressure regulating box

Technical Field

The utility model relates to the technical field of gas pressure regulating equipment in a gas transmission and distribution system, in particular to a direct-buried underground pressure regulating box.

Background

With the rapid development of the urban construction in China, the requirements of domestic cities on urban appearances and environments are higher and higher, and the traditional floor type gas pressure regulating device and the outdoor pipeline matched with the traditional gas pressure regulating device can not meet the requirements of urban management. In addition, the urban land is increasingly tense, so that the public facilities tend to be turned to the underground from the open air. The gas pressure regulating device which occupies a smaller area and is directly buried underground is just a good solution for solving the problem of placing the gas device in urban management.

The direct-buried underground pressure regulating equipment is not only simple to install the original ground equipment underground, but also has the advantages of safety, reliability, convenience in ground operation and incapability of causing personal safety problems due to limited space. However, in order to implement the scheme of the underground pressure regulating tank in the prior art, the commonly adopted measures are as follows: the existing ground equipment is simplified and spliced, and then is installed in a protective box body and then is buried underground. This measure has the following problems:

1. the voltage regulator unit commonly used by the ground equipment is directly utilized:

general type voltage regulator is installed subaerially occasionally sufficient installation, is overhauld and operating space, nevertheless installs in burying the narrow and small space after ground back, and traditional flange mounting mode is no longer suitable to there is not enough maintenance and operating space again, this has become the major reason that underground pressure regulating equipment pressure regulating main part overhauld and operate the difficulty. And the general voltage regulator also has the problems of applicability on parameters:

firstly, the pressure regulator meeting the pressure and flow parameters increases the difficulty of burying the ground due to the complex structure and large volume; secondly, the pressure regulator with the buried structure and the buried volume is not matched with pressure parameters, so that the process is unstable.

2. The above-ground pipeline connection form is not suitable for underground equipment:

the space of underground equipment is limited, and the underground equipment cannot be connected by using an overground pipeline, particularly flanges, threads and the like, according to the space without fastening or dismounting. The prior art still continues to use traditional connection form, then must cause underground space to enlarge, has firstly occupied more spatial position, has limited space in the second kind protection box, needs personnel to get into limited space and operates, must cause great personal safety hidden danger.

3. Influence of flow regime:

in the prior art, because the general equipment is installed, the internal gas path changes more, and the flow channel structure cannot keep a good shape, so that the flow state of the gas flow is seriously influenced, and the gas supply is unstable.

4. The layout problem is as follows:

the common structural layout of prior art underground pressure regulating box divide into large volume box formula overall arrangement, highly integrated form overall arrangement and open-type overall arrangement three kinds, wherein:

the layout of the large-volume box body adopts a large-volume cylinder or a large-volume box body as a protective shell, and fills a pipeline, a pressure regulating device, a safety protection device, a filtering device and the like into the large-volume box body, and the large-volume box body has the following defects: because the size is huge, workers cannot operate and overhaul on the ground, and therefore the workers are required to enter the shell, the problem of limited space is caused, and huge potential safety hazards exist;

secondly, in order to obtain smaller occupied space, the highly integrated layout adopts small-sized pressure regulating equipment, the satisfaction degree of the pressure regulating equipment on the performance of working conditions is greatly sacrificed, and excessively compressed spaces such as the pressure regulating equipment, safety protection equipment, filtering equipment and the like with small volumes are overlapped and combined, so that the difficulty of maintenance is brought, the overlapped combination is required to be lifted out of the ground for carrying out subsequent work when the simplest maintenance is usually carried out, the difficulty of field work is greatly increased, various process lines, signal feedback pipelines and the like are complicated and messy after the spaces are extremely compressed, and the operability of maintenance and recovery is increased;

the protection shell is made into an open layout in order to solve the problem of limited space caused by complex internal structure and large space, so that the ventilation performance is improved, the potential safety hazard of personnel is avoided, the structure cannot resist rain and water flooding, even the most basic physical protection and the like are very deficient, and the protection shell cannot play a real protection role.

In conclusion, the underground pressure regulating box in the prior art is not innovated and researched from the aspects of performance, structure and human engineering aiming at the buried characteristic, and more characteristics of the ground equipment are used for reference. Such products often bring negative user experience for buried equipment users to influence the popularization of underground pressure regulating equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a direct-buried underground pressure regulating box, which aims to realize more reasonable spatial 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 characteristics of the pressure regulating box.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a direct-buried underground pressure regulating box is used for regulating gas pressure and comprises a box body, wherein the box body is in a layered cavity layout; 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 filtering device and a pressure regulator are arranged in the pressure-bearing cavity;

the inlet of the filter device is communicated with the gas inlet pipe, and the outlet of the filter device is connected with the inlet of the pressure regulator;

the outlet of the pressure regulator is communicated with the air outlet pipe;

and a pressure regulating control device is arranged in the non-pressure-bearing cavity, and the pressure regulating control device is used for monitoring and controlling the operation of the pressure regulating operation.

By adopting the layered cavity layout, the pressure regulating execution area and the pressure regulating control area of the pressure regulating box are clearly distributed, the partitioned protection of the equipment in the box is realized, and meanwhile, a larger, safer and more convenient operation space is provided for operators.

In order to facilitate buried installation of whole pressure regulating box, in an embodiment of this application, the pressure-bearing chamber and the non-pressure-bearing chamber of box adopt dismantled and assembled structure, and are specific, the roof seal installation in of pressure-bearing chamber in the lateral wall top in pressure-bearing chamber, the bottom in non-pressure-bearing chamber be equipped with the through-hole that the cross-sectional dimension in pressure-bearing chamber suited, the non-pressure-bearing chamber cover in the roof top centre in pressure-bearing chamber, promptly the center of through-hole with the cross-sectional center in pressure-bearing chamber is coaxial, just the through-hole all around with pressure-bearing chamber roof passes through screwed connection.

Optionally, the edge of the top plate of the pressure-bearing cavity is provided with a mounting supporting plate for supporting and mounting 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 filter device is arranged in the incoming air cavity, and an inlet of the filter device is separated from the inner wall of the incoming air 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, the inlet of the clean air cavity is communicated with the outlet of the filtering device, and the outlet of the clean air cavity is communicated with the inlet of the pressure regulator.

In order to achieve the optimal gas path structure design and guarantee the stability of gas supply, in another embodiment of the application, an air inlet cavity, a purified air cavity and an air outlet cavity are sequentially arranged in the pressure-bearing cavity; the filter device is arranged in the incoming air cavity, an inlet of the filter device is separated from the inner wall of the incoming air cavity, and an outlet of the filter device is connected with an inlet of the clean air cavity; the pressure regulator is arranged in the air outlet cavity, an inlet of the pressure regulator is connected with an outlet of the air purifying 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.

Optionally, the air inlet cavity and the air outlet cavity are arranged in parallel from left to right, and the air purifying cavity is arranged at the bottoms of the air inlet cavity and the air outlet cavity.

In an embodiment of the present application, a silencer is disposed at an outlet of a top of the pressure regulator, the silencer is a cylindrical silencer, an inlet of the cylindrical silencer is disposed at a bottom of the cylinder, and an outlet of the cylindrical silencer is disposed at a wall of the cylinder. After the gas enters the silencer through the outlet at the top of the pressure regulator to reduce noise, the low-pressure gas after pressure reduction and noise reduction is discharged into the gas outlet cavity from the outlet of the silencer to be buffered, and then the low-pressure gas is led to the downstream through the gas outlet pipe.

To burying ground characteristic of burying ground pressure regulating box, in order to give vent to anger the maintenance of chamber pressure regulating district equipment in the case conveniently, in an embodiment of this application, the voltage regulator with the muffler is quick dismouting connection structure, and is specific:

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 adapted to the horizontal diameter of the pressure regulator; a pressure regulating area cover plate covers the first through hole, and is tightly installed on the top surface of the top plate of the pressure bearing cavity through screws;

a second through hole is formed in the middle of the pressure regulating area cover plate, the diameter of the second through hole is smaller than that of the first through hole, and the second through hole 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 silencer penetrates through the second through hole downwards; the maintenance cover plate covers the second through hole and is tightly installed 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 abutting joint with the inlet of the air outlet cavity.

Aiming at the characteristic that a valve port pad of a pressure regulator needs to be maintained and replaced frequently, 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 cone frustum shape; the large end face of the valve seat is mounted on a pressure regulating valve body of the pressure regulator through a screw, and the small end face of the valve seat is mounted on a pressure regulating valve core inside the pressure regulating valve in a compression joint mode; and the small end surface of the valve seat is detachably provided with a valve port pad for realizing the sealing between the valve seat and the valve core of the pressure regulating valve.

Optionally, a gasket groove matched with the valve port gasket is formed in the center of the small end face of the valve seat, and the valve port gasket is embedded in the gasket groove; the middle non-sealing action part of the valve port gasket is tightly attached to the small end face of the valve seat through a circular pressing plate, the central part of the circular pressing plate and the central part of the small end face of the valve seat are provided with screw holes, and a screw sequentially penetrates through the screw holes in the central part of the circular pressing plate, the valve port gasket and the screw holes in the central part of the small end face of the valve seat, so that the circular pressing plate can press and cover the valve port gasket on the small end face of the valve seat, the valve port gasket is more firmly installed, and the valve port gasket is convenient to disassemble.

To burying ground characteristic of burying ground pressure regulating box, for the convenience comes the chamber to the incasement and filters the maintenance of cutting off district equipment, in an embodiment of this application, filter equipment also is quick detach dress connection structure design, and is specific:

the top of the air inlet cavity is provided with a third through hole which penetrates through the non-pressure-bearing cavity, and the diameter of the third through hole is adapted to the horizontal diameter of the filtering device; the top of the filtering device is in press 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 third through hole and is tightly installed on the top surface of the top plate of the pressure bearing cavity through screws.

Optionally, a gas flow passage at the top of the filtering device is connected with a cut-off valve for cutting off and controlling gas flow; the trip valve includes disk seat and case, the case also is quick detach connection structure design, and is specific:

a fourth through hole is formed in the middle of the filtering cover plate, the diameter of the fourth through hole is smaller than that of the third through hole, and the fourth through hole 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; and a valve core cover plate is fixed at the top of the valve core, covers the fourth through hole and is tightly arranged on the top surface of the filter cover plate through a screw.

Through the above quick-dismantling connection structure design for the pressure regulator, the silencer, the pressure regulator valve seat, the filtering device and the valve core, the installation and the disassembly of the corresponding device can be realized through the fastening or the disassembly of the screw, the operation is simple, convenient and quick, and the quick and convenient overhaul of the equipment in the buried pressure regulating box is more facilitated.

In order to improve the rationality of the spatial layout of the non-pressure-bearing cavity as the pressure regulating monitoring control area, the pressure regulating control device layout is tidier and clearer, so that the operation is easier and easier, in one embodiment of the application, the layout design is carried out on the pressure regulating control device of the non-pressure-bearing cavity, and the pressure regulating control device comprises: the automatic pressure control device comprises a cut-off valve actuator, a front pressure controller, a rear pressure controller, a commander, a bleeding assembly and a manual emptying valve, wherein the cut-off valve actuator is arranged in a non-pressure-bearing cavity space above the cut-off valve and is connected with the cut-off valve; the front pressure controller is arranged in a non-pressure-bearing cavity space above the coming air cavity and is connected with the coming air 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 commander is arranged on one side of the rear pressure controller and is connected with the pressure regulator; the bleeding component is arranged on one side of the stop valve actuator and connected with the air inlet cavity and the air outlet cavity, and the manual bleeding valve is arranged in a non-pressure-bearing cavity space above the air outlet cavity and connected with the air outlet cavity.

Optionally, the front pressure controller includes a front pressure root valve, a front pressure meter and a pressure-taking feedback signal pipe interface, the rear pressure controller includes a rear pressure root valve, a rear pressure meter and a pressure-taking feedback signal pipe interface, and the bleeding component includes a bleeding root valve, a differential pressure meter, a bleeding valve and a bleeding pipe communicating a bleeding valve outlet with the outside of the box body.

In one embodiment of the application, the left side and the right side of the non-pressure-bearing cavity are respectively provided with a low-position ventilation pipe and a high-position ventilation pipe.

In one embodiment of the present application, the top of the box body is also hinged with a box cover.

In one embodiment of the application, the box cover is opened and closed through an air stay bar connecting the box body and the box cover.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the direct-buried underground pressure regulating box, the inner space of the box body is designed into a layered cavity layout of an upper-layer non-pressure-bearing cavity and a lower-layer pressure-bearing cavity, the pressure-bearing cavity part provided with the filtering device and the 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, and control operations such as cutting, pressure regulating, debugging and the like of an operator on the pressure regulating box are performed in the non-pressure-bearing cavity at the top layer; this layering cavity overall arrangement for the pressure regulating execution district of pressure regulating case and pressure regulating control district workspace distribute definitely, have realized the subregion protection to the incasement equipment, also provide bigger, safer and more convenient operating space for operating personnel. Simultaneously, adopt dismantled and assembled structure with the pressure-bearing chamber and the non-pressure-bearing chamber of box, also be convenient for more carry out the operation when burying the ground installation to pressure regulating box to better satisfied the buried characteristic of pressure regulating box.

2. The utility model relates to a direct-buried underground pressure regulating box, which carries out gas path structural design on a pressure bearing cavity, namely a core area for filtering and regulating gas, wherein a gas inlet cavity, a gas purifying cavity and a gas outlet cavity are arranged in the pressure bearing cavity, 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 air purifying cavity, the pressure regulator, the air outlet cavity and the air outlet pipe are combined, the structure of the whole air circuit is simple and stable, the air flow direction is clear and definite, 3 buffer areas of the air inlet cavity, the air purifying cavity and the air outlet cavity are combined, the influence of a complex air circuit on the flow state is avoided, the flow state of the air flow is stable, and the stability of air supply can be effectively guaranteed.

3. According to the directly-buried underground pressure regulating box, key equipment such as a pressure regulator, a silencer connected with the pressure regulator, a filtering device, a stop valve connected with the filtering device and the like are replaced by traditional flange mounting modes on a mounting structure, the quick-dismounting structural design is adopted, dismounting operation can be carried out in a non-pressure-bearing cavity, the structural requirement that the pressure regulating box is convenient to operate on the ground after being buried is met, and equipment is easy to overhaul and maintain.

4. According to the direct-buried underground pressure regulating box, the layout of the pressure regulating control device in the non-pressure-bearing cavity is neat, clear and understandable, the observation of the state instrument and the operation and debugging of cutting off and pressure regulating are carried out on the underground pressure regulating box in the non-pressure-bearing cavity, the operation difficulty is low, the operation is easy to operate, the learning cost of a user can be reduced, and the damage to pressure regulating box equipment due to misoperation can be avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the installation structure of the pressure-bearing chamber and the non-pressure-bearing chamber of the present invention.

Fig. 3 is a schematic view of the direction of internal airflow in accordance with the present invention.

Fig. 4 is an exploded view of the quick release connection structure of the pressure regulator, the muffler, the filtering device and the valve core according to the present invention.

Fig. 5 is an exploded view of the quick release connection structure of the valve seat in the pressure regulator of the present invention.

Fig. 6 is a schematic plan layout view of the pressure regulating operation device in the unpressurized chamber according to the present invention.

Fig. 7 is a schematic view of a partial cross-sectional structure of the case cover of the present invention when opened.

Reference numerals:

1-box body, 11-pressure bearing cavity, 11 a-top plate and 11 a' -mounting supporting plate;

111-coming air cavity, 111 a-third through hole, 112-air purifying cavity, 113-air outlet cavity and 113 a-first through hole;

12-non-pressure bearing cavity, 12 a-through hole, 12 b-low vent pipe and 12 c-high vent pipe;

13-box cover, 13 a-reinforcing rib, 13 b-gas stay bar

2-the incoming pipe;

3-air outlet pipe;

4-filter means, 41-filter cover plate, 41 a-fourth through hole;

5-a voltage regulator, 51-a voltage regulating area cover plate, 51 a-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-pressure plate;

6-screw;

7-silencer, 71-maintenance cover plate;

8-valve core, 81-valve core cover plate;

9-pressure regulating operation device, 91-cut-off 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-bleeding root valve, 910-differential pressure instrument, 911-bleeding valve and 912-bleeding pipe.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all 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 tank for regulating gas pressure, which includes a tank body 1, wherein the tank body 1 is internally provided with a layered cavity layout, specifically, the bottom layer of the tank body 1 is a pressure-bearing cavity 11, the top layer of the tank 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 filtering device 4 and a pressure regulator 5, the inlet of the filtering device 4 is communicated with the air inlet pipe 2, the outlet of the filtering device 4 is connected with the inlet of the pressure regulator 5, and the outlet of the pressure regulator 5 is communicated with the air outlet pipe 3; the pressure regulating operation device 9 is installed in the non-pressure-bearing cavity 12, and the monitoring control operation of the pressure regulating operation is realized through the pressure regulating operation device 9.

When the pressure regulating box is used, the pressure bearing cavity 11 in which the filtering device 4 and the pressure regulator 5 are installed in the pressure regulating box is partially buried underground, so that the pressure regulating box is connected with a gas pipeline to perform gas filtering and pressure regulating, and control operations such as cutting, pressure regulating, debugging and the like of the pressure regulating box are performed in the non-pressure bearing cavity 12 on the upper part by an operator. This layering cavity overall arrangement for the pressure regulating execution district of pressure regulating case and pressure regulating control district workspace distribute definitely, have realized the subregion protection to the incasement equipment, also provide bigger, safer and more convenient operating space for operating personnel simultaneously.

As an optional implementation scenario, in the implementation scenario, as shown in fig. 2, the pressure-bearing cavity 11 and the non-pressure-bearing cavity 12 of the box body 1 adopt a detachable structure; specifically, a top plate 11a of the pressure-bearing cavity 11 is hermetically mounted at the top of the side wall of the pressure-bearing cavity 11, a through hole 12a which is matched with the cross section of the pressure-bearing cavity 11 in size is arranged at the bottom of the non-pressure-bearing cavity 12, the non-pressure-bearing cavity 12 covers the top center of the pressure-bearing cavity 11, namely, the center of the through hole 12a is coaxial with the center of the cross section 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 a screw 6.

When the box body is installed, the pressure-bearing cavity 11 of the box body 1 can be installed in a buried mode, after 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 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 of buried operation caused by occupation of large-size space of the non-pressure-bearing cavity 12 during buried installation is avoided; meanwhile, aiming at the condition that the non-pressure-bearing cavity 12 is closer to the ground and is easy to be damaged, the detachable screw connecting structure also provides a convenient operation basis for the later maintenance and replacement of the non-pressure-bearing cavity 12.

In this implementation scenario, the edge of the top plate 11a of the pressure-bearing chamber 11 is provided with a mounting plate 11a 'for supporting and mounting the non-pressure-bearing chamber 12, and the mounting plate 11 a' and the top plate 11a are integrally formed. Through the design of the mounting support plate 11 a', the convenience and stability of the connection of the non-pressure bearing cavity 12 and the pressure bearing cavity 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 111 is communicated with the air inlet cavity 113, and the air outlet pipe 2 is communicated with the air outlet cavity 113; the filter device 4 is arranged in the air incoming chamber 111, and the inlet of the filter device 4 is separated from the inner wall of the air incoming chamber 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.

An incoming air cavity 111 and an outgoing air cavity 113 are arranged in the pressure bearing cavity 11, and the filtering device 3 and the pressure regulator 5 are respectively arranged in the incoming air cavity 111 and the outgoing air cavity 113, so that the incoming air cavity 111 forms a filtering area, and the outgoing air cavity 113 forms a pressure regulating area; when the gas enters the gas inlet cavity 111 from the gas pipe 2 for filtering, the gas inlet cavity 111 provides buffering and gathering space for the entering gas flow, so that the gas can enter the filtering device 4 fully and orderly for filtering; after the filtered gas enters the pressure regulator 5 to regulate the pressure, the gas firstly flows to the gas outlet cavity 113 and then flows into the gas outlet pipe 3 from the gas outlet cavity 113. The air flow direction of the whole process is as follows: the air inlet pipe, the air inlet cavity, the filtering device, the pressure regulator, the air outlet cavity and the air outlet pipe are clear and definite in air flow direction and stable in air flow state, so that air supply is more stable.

As an optional implementation scenario, in the implementation scenario, a clean air cavity 112 is disposed in the pressure-bearing cavity 11, the clean air cavity 112 is disposed between the filtering device 4 and the pressure regulator 5, an inlet of the clean air cavity 112 is communicated with an outlet of the filtering device 4, and an outlet of the clean air cavity 112 is communicated with an inlet of the pressure regulator 5.

Through setting up the air purification chamber 112, the gas collects the air purification chamber 112 earlier and cushions steadily after filter equipment 4 filters, and the air current after the buffering is stable reentries the pressure regulator 5, can improve the pressure regulating effect.

As an optional implementation scenario, in the implementation scenario, an air inlet cavity 111, a clean air 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 incoming cavity 111, the inlet of the filter device 4 is separated from the inner wall of the air incoming cavity 111, and the outlet of the filter device 4 is connected with the inlet of the air purifying cavity 112; the pressure regulator 5 is arranged in the air outlet cavity 113, the inlet of the pressure regulator 5 is connected with the outlet of the air purifying cavity 112, and the outlet of the pressure regulator 5 is separated from the inner wall of the air outlet cavity 113.

Through the structure setting of coming air cavity 111, net gas chamber 112 and play gas cavity 113, the upper reaches gas gets into air cavity 1111 from trachea 2, after the filter equipment 4 that comes in air cavity 111 purifies, gaseous downwardly entering net gas chamber 112, the net gas cavity 112 that lies in coming the air cavity 111 bottom provides big and smooth buffering space that converges for the gas after filtering, the net gas after the buffering is stable upwards gets into voltage regulator 5, after pressure is adjusted to pressure regulator 5, gaseous export entering play gas cavity 113 through voltage regulator 5 top. As shown in figure 3, the whole gas circuit structure is simple and stable, and 3 buffer areas of the gas supply cavity, the gas purification cavity and the gas outlet cavity are combined, so that the influence of a complex gas circuit on the flow state is avoided, and the stability of gas supply can be effectively guaranteed.

In this implementation scenario, the structural layout of the air inlet cavity 111, the air purifying cavity 112, and the air outlet cavity 113 is as follows: the air incoming cavity 111 and the air outgoing cavity 113 are arranged in parallel from left to right, the air purifying cavity 112 is arranged at the bottoms of the air incoming cavity 111 and the air outgoing cavity 113, and the cross section of the air purifying cavity 112 coincides with the vertical projection of the overall cross section of the air incoming cavity 111 and the air outgoing cavity 113. By adopting the structural layout, the gas entering the pressure regulator 5 can not be fully buffered stably, the planar floor 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 air purifying cavity 112 without any equipment is arranged at the bottommost layer, and the operation difficulty that the air purifying cavity 112 is not damaged due to extra attention when the equipment in the air cavity 111 and the air outlet cavity 113 is overhauled can be avoided.

As an optional implementation scenario, in the implementation scenario, a cylindrical muffler 7 is disposed at an outlet at the top of the pressure regulator 5, an inlet of the cylindrical muffler 7 is disposed at the bottom of the barrel, and an outlet of the cylindrical muffler is disposed at the barrel wall. After the gas enters the silencer 7 through the outlet at the top of the pressure regulator 5 for noise reduction, the low-pressure gas after pressure reduction and noise reduction is discharged into the gas outlet cavity 113 from the outlet of the silencer 7 for buffering and then is led to the downstream through the gas outlet pipe 3.

As shown in fig. 4, in this implementation scenario, the voltage regulator 5 and the muffler 7 are both of a quick-release connection structure; specifically, the top of the air outlet cavity 111 is provided with a first through hole 113a penetrating to the non-pressure-bearing cavity, 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 installed 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, the diameter of the second through hole 51a is smaller than that of the first through hole 113a, and the second through hole is adaptive to 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 overhaul 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 a screw 6; the inlet at the bottom of the silencer 7 is in sealing butt joint with the outlet at the top of the pressure regulator 5, and the inlet at the bottom of the pressure regulator 5 is in butt joint with the inlet of the air outlet cavity 113. The inlet of the air outlet cavity 113 is positioned at one side of the pressure regulator 5 and can be provided with a positioning table, so that the insertion of the inlet at the bottom of the pressure regulator 5 is facilitated.

During installation, the inlet at the bottom of the pressure regulator 5 is vertically inserted into the inlet of the air outlet cavity 113 for positioning, then the silencer 7 downwards penetrates through the second through hole 51a from the non-pressure bearing cavity 12, so that the inlet at the bottom of the silencer 7 is contacted with the outlet at the top 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 a screw 6; in the tightening process, the force of the maintenance cover plate 71 is supported tightly downwards, and the silencer 7 is driven to support tightly downwards, so that the silencer 7 can be tightly abutted to the top outlet of the pressure regulator 5, the pressure is transmitted downwards, the bottom of the pressure regulator 5 is connected with the outlet of the gas purification cavity 112 in a pressure insertion mode, and the stable installation of the pressure regulator 5 is realized. During the dismantlement, only need demolish the screw 6 on the maintenance apron 71, can take out muffler 7, expose the export in voltage regulator 5 top, change the valve port pad of the maintenance of muffler 7 and voltage regulator 5 top exit passage department disk seat, all very convenient.

When needing to overhaul the regulator 5 body, only need demolish screw 6 on the regulator apron 51, can take out the whole subassembly (including muffler 7 and maintenance apron 71) of connecting in regulator apron 51, the rethread first through-hole 113a hangs out the regulator 5 whole and overhauls can.

As an optional implementation scenario, in the implementation scenario, the valve seat 52 of the pressure regulator 5 is also designed as a quick-release connection structure, specifically, as shown in fig. 5, the valve seat 52 is installed in an outlet channel of the pressure regulating valve of the pressure regulator 5, and the valve seat 52 is in a truncated cone shape as a whole; the large end surface 521 of the valve seat 52 is mounted on a pressure regulating valve body of the pressure regulator through a screw 6, and the small end surface 522 of the valve seat 52 is mounted on a pressure regulating valve core 53 in the pressure regulating valve in a pressing mode; the valve port pad 54 is detachably disposed 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.

When the valve seat is installed, one end of the small end surface 522 of the valve seat 52 is inserted into the pressure regulating valve through the outlet channel of the pressure regulating valve, so that the valve port gasket 54 abuts against the port of the valve element 53 of the pressure regulating valve, and the sealing between the valve seat 52 and the valve element 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, and the installation is completed; when the valve port pad 54 needs to be maintained or replaced, the screw 6 is only required to be removed, the large end face 521 of the valve seat is removed from the valve body, the whole valve seat assembly (including the valve seat 52 and the valve port pad 54) can be easily drawn out from the outlet side of the pressure regulating valve, and then the valve port pad 54 is taken down for maintenance or replacement. The whole process is simple and quick to operate, the pressure regulator does not need to be disassembled, and the maintenance and the replacement of the valve port gasket 54 are efficient and convenient by combining the quick disassembling and assembling structure of the pressure regulator body.

In the present implementation scenario, a gasket groove (not shown in the figure) matching with the valve port gasket 54 is arranged at the central portion of the small end surface 522 of the valve seat 52, and the valve port gasket 54 is embedded in the gasket groove to improve the installation efficiency and the service life of the valve port gasket 54; the middle non-sealing action part of the valve port pad 54 is tightly attached to the small end surface 522 of the valve seat 52 through a circular pressing plate 55, specifically, the central part of the circular pressing plate 55 and the central part of the small end surface 522 of the valve seat 52 are both provided with a screw hole, and a screw 6 sequentially penetrates through the screw hole at the central part of the circular pressing plate 55, the valve port pad 54 and the screw hole at the central part of the small end surface 522 of the valve seat, so that the circular pressing plate 55 presses the valve port pad 54 on the small end surface 522 of the valve seat 52, and the valve port pad 54 is firmer to mount and is convenient to dismount.

As an optional implementation scenario, in the implementation scenario, the filtering device 4 is also designed for a quick-release 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 inlet 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 filtering device 4 is pressed with a filtering cover plate 41, and the diameter of the filtering cover plate 41 is larger than the horizontal diameter of the filtering device 4; the bottom surface of the filter cover plate 41 covers 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 filter device 4 is vertically inserted into the outlet of the air incoming cavity 111 for positioning, and a positioning table can be arranged at one side of the outlet of the air incoming cavity 111, which is positioned at the filter device 4, so that the insertion of the outlet at the bottom of the filter device 4 is facilitated; then, 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 filtering cover plate 41 is forced to tightly support the top of the filtering device 4 downwards to form compression joint on the filtering device 4, so that the filtering device 4 is stably installed. When the filter device is disassembled, the screw 6 on the filter cover plate 41 is only needed to be disassembled, and the filter device 4 can be drawn out for maintenance or filter element replacement, so that the filter device is convenient and fast.

As an optional implementation scenario, in the implementation scenario, a gas flow passage at the top of the filtering device 4 is connected with a shut-off valve for performing shut-off control on gas flow; the shut-off valve comprises a valve seat and a valve core 8, the valve core 8 is also designed for a quick-release connecting structure, specifically, as shown in fig. 4, a fourth through hole 41a is arranged in the middle of the filtering cover plate 41, and the diameter of the fourth through hole 41a is smaller than that of the third through hole 111a and is adapted to the horizontal diameter of the valve core 8; the valve core 8 downwards penetrates through the fourth through hole 111a to be connected with the valve seat; the top of the valve core 8 is fixed with a valve core cover plate 81, the valve core cover plate 81 covers the fourth through hole 111a, and is tightly installed on the top surface of the filter cover plate 41 through a screw 6.

When the valve core 8 needs to be overhauled or the valve port pad needs to be replaced, the valve core 8 can be drawn out from the fourth through hole 41a only by removing the screw 6 on the valve core cover plate 81, and the valve port pad is convenient and quick to overhaul or replace.

As an optional implementation scenario, in the implementation scenario, the voltage regulation control device 9 includes: the automatic pressure control valve comprises a cut-off valve actuator 91, a front pressure controller, a rear pressure controller, a commander 92, a bleeding assembly and a manual emptying valve 93, wherein the cut-off valve actuator 91 is arranged on a valve core cover plate 41 of a non-pressure-bearing cavity space above a cut-off valve and is connected with the cut-off valve; the front pressure controller is arranged on the top surface of the top plate 11a of the pressure-bearing cavity above the coming air cavity 111 and is connected with the coming air cavity 111; the rear pressure controller is arranged on the top surface of the pressure bearing cavity top plate 11a positioned above the air outlet cavity 113 and is connected with the air outlet cavity 113; the commander 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 bleeding 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 atmospheric valve 93 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.

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 bleeding component includes a bleeding root valve 99, a differential pressure meter 910, a bleeding valve 911 and a bleeding pipe 912 communicating the outlet of the bleeding valve with the outside of the tank.

The pressure regulating control device of this implementation scene is in the clean and tidy, clear, understandable overall arrangement of unpressurized intracavity, carries out the observation of status instrument to underground pressure regulating box to and the operation and the debugging of cutting off, pressure regulating all go on in unpressurized chamber, and the operation degree of difficulty is low, easy to operate, not only can reduce user's learning cost, also can avoid the damage of maloperation to pressure regulating box equipment.

As an optional implementation scenario, in the implementation scenario, the left and right sides of the non-pressure-bearing cavity 12 are respectively provided with a low-position ventilation pipe 12b and a high-position ventilation pipe 12c, as shown in fig. 1. The ventilation and heat dissipation effects of the non-pressure-bearing cavity 12 can be improved by the arrangement of the low-position ventilation pipe 12b and the high-position ventilation pipe 12 c.

As an optional implementation scenario, in the implementation scenario, a box cover 13 is further hinged to the top of the box body 1, as shown in fig. 7; the inner side of the box cover 13 is provided with a reinforcing rib 13 a; through the design of case lid 13 structure, can improve the safety protection level of pressure regulating box. 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 safety and the attractiveness are achieved, and the opening and closing operation of the box cover 13 is facilitated.

It should be noted that the devices described in the present invention all have corresponding energy supplies, and those skilled in the art should understand that the present invention is not specifically described; the specific model of each device can be selected according to specific conditions, so as to realize corresponding functions, and the utility model is not particularly limited; the connection relationship among the instruments, devices and equipment is the connection commonly understood in the art, and the ordinary knowledge of the skilled person in the art is to understand the connection relationship, so the utility model is not specifically explained.

In the description of the present invention, it is to be understood that the terms "front", "back", "left", "right", "upper", "lower", "inner", "outer", "top", "bottom", "side", and the like, indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing and simplifying the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Meanwhile, unless explicitly stated or limited otherwise, technical terms or scientific terms used in the present invention shall have the ordinary meaning understood by those having ordinary skill in the art to which the present invention belongs, and the terms "set", "connected", "mounted", and the like shall be understood broadly, for example, they may be fixedly connected, detachably connected, or integrated; the connection can be mechanical connection or welding connection; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations. Similarly, the use of "first," "second," "third," "fourth," and the like, herein does not denote any order, quantity, or importance, but rather the utility model is used to distinguish one element from another.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a direct-burried 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; a filtering device and a pressure regulator are arranged in the pressure-bearing cavity, the inlet of the filtering device is communicated with an air inlet pipe, the outlet of the filtering 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 arranged above the pressure-bearing cavity; and a pressure regulating control device is arranged in the non-pressure-bearing cavity, and the pressure regulating control device is used for monitoring and controlling the operation of the pressure regulating operation.

2. The direct-buried underground pressure regulating box according to claim 1, wherein an air inlet cavity and an air outlet cavity are arranged in the pressure bearing cavity; the filter device is arranged in the incoming air cavity, and an inlet of the filter device is separated from the inner wall of the incoming air 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.

3. The direct-buried underground pressure regulating tank as claimed in claim 1, wherein a clean air chamber is arranged in the pressure-bearing chamber, the clean air chamber is arranged between the filtering device and the pressure regulator, an inlet of the clean air chamber is communicated with an outlet of the filtering device, and an outlet of the clean air chamber is communicated with an inlet of the pressure regulator.

4. The direct-buried underground pressure regulating tank as claimed in claim 1, wherein an air inlet chamber, a clean air chamber and an air outlet chamber are sequentially arranged in the pressure bearing chamber; the filter device is arranged in the incoming air cavity, the inlet of the filter device is separated from the inner wall of the incoming air cavity, and the outlet of the filter device is connected with the inlet of the clean air cavity; the pressure regulator is arranged in the air outlet cavity, an inlet of the pressure regulator is connected with an outlet of the air purifying 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.

5. The direct-buried underground pressure regulating tank as claimed in claim 4, wherein the air inlet chamber and the air outlet chamber are arranged side by side from left to right, and the air purifying chamber is arranged at the bottom of the air inlet chamber and the air outlet chamber.

6. The direct-buried underground pressure regulating tank as claimed in claim 5, wherein a silencer is arranged at the outlet of the pressure regulator; the silencer is a cylindrical silencer, an inlet of the cylindrical silencer is arranged at the bottom of the cylinder, and an outlet of the cylindrical silencer is arranged on the wall of the cylinder.

7. The direct-buried underground pressure regulating box according to claim 6, wherein a first through hole penetrating to the non-pressure-bearing cavity is formed in the top of the gas outlet cavity, and the diameter of the first through hole is adapted to the horizontal diameter of the pressure regulator; a pressure regulating area cover plate covers the first through hole, and is tightly installed on the top surface of the top plate of the pressure bearing cavity 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 an outlet channel of a pressure regulating valve of the pressure regulator, and the whole valve seat is in a cone frustum shape; the large end face of the valve seat is mounted on a pressure regulating valve body of the pressure regulator through a screw, and the small end face of the valve seat is mounted on a valve core of the pressure regulating valve in a compression joint mode; and the small end surface of the valve seat is detachably provided with a valve port pad for realizing the sealing between the valve seat and the valve core of the pressure regulating valve.

8. The direct-buried underground pressure regulating tank as claimed in claim 2 or 4, wherein a third through hole penetrating to the non-pressure-bearing cavity is formed at the top of the gas inlet cavity, and the diameter of the third through hole is adapted to the horizontal diameter of the filtering device; the top of the filtering device is in press 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 third through hole and is tightly installed on the top surface of the top plate of the pressure bearing cavity through screws.

9. The direct-buried underground pressure regulating tank as claimed in claim 8, wherein a cut-off valve is connected to a gas flow passage at the top of the filtering device, and the cut-off valve comprises a valve seat and a valve core;

10. The buried underground pressure regulating box according to claim 1, wherein the top plate of the pressure-bearing cavity is hermetically mounted on the top of the side wall of the pressure-bearing cavity, the bottom of the non-pressure-bearing cavity is provided with a through hole which is matched with the cross-sectional dimension of the 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 screws.