CN112361222A

CN112361222A - Intelligent buried gas metering device

Info

Publication number: CN112361222A
Application number: CN202011162147.2A
Authority: CN
Inventors: 王翔宇; 耿旭强
Original assignee: Tianjin Chris Gas Equipment Co ltd
Current assignee: Tianjin Chris Gas Equipment Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-02-12

Abstract

An intelligent buried gas metering device comprises a box body with an opening at the top, wherein the top of the box body is hinged and connected with an upper cover, the upper part of the box body is fixedly connected with a transparent window plate in a sealing way, one side of the box body is fixedly connected and communicated with an inlet connecting pipe, the other side of the box body is fixedly connected and communicated with an outlet connecting pipe, a metering unit and a detection unit are fixedly connected in the box body, and the box body is also communicated with an emptying pipe; the air inlet end of the metering unit is communicated with the inlet connecting pipe, and the air outlet end of the metering unit is communicated with the outlet connecting pipe. The metering unit comprises an inlet fixing seat, an outlet fixing seat, a vertical pipe, a flowmeter and an IC card controller, wherein the inlet fixing seat, the outlet fixing seat, the vertical pipe, the flowmeter and the IC card controller are fixedly arranged on the inner wall of the box body; the IC card controller is fixedly connected and communicated with the outlet fixing seat, and the bottom of the exhaust end of the IC card controller is fixedly supported by the vertical pipe. The metering device can realize buried gas metering detection, does not need to design an additional power supply for a plurality of instruments, and has compact structure and safe and reliable use.

Description

Intelligent buried gas metering device

Technical Field

The invention relates to the technical field of gas transmission and distribution, in particular to an intelligent buried gas metering device.

Background

Most of the traditional domestic gas metering devices are arranged on the ground, and valves, filters, meters and the like are sequentially connected inside the box body through pipelines. Such a filter box has the following drawbacks:

1. large occupied space and complex maintenance.

2. The ground inside part of the box body is moist and has unsmooth ventilation, and used equipment is extremely easy to corrode, so that potential safety hazards exist.

3. Most metering devices are arranged beside roads, so that the sight is easy to be shielded, and the scratches on the surface of the box body are obviously stained due to the non-civilized behaviors of some passers-by, so that the attractiveness is influenced.

4. There is a risk of gas leakage from vehicle impact.

5. The tank is easily opened, with the risk of being illegally parametrized and of cutting off the gas supply.

Therefore, how to install a metering device on a gas pipeline, realizing convenient and fast underground gas metering detection, and solving the problem urgently for technical personnel in the field.

Through published patent searches, the following comparison documents were found:

the utility model provides a high protection type gas pressure regulating measurement cabinet (CN210662330U) discloses a high protection type gas pressure regulating measurement cabinet, involves the pressure regulating measurement cabinet field, including base and pre-buried ground, the base passes through bolt assembly to be installed on pre-buried ground, and bolt assembly's threaded rod outside cover is equipped with the spring, is equipped with the rubber pad between the pre-buried ground of base, the fixedly connected with cabinet body on the base, and the leading flank fixed mounting of the cabinet body has the door plant, a plurality of frame plates of inboard fixedly connected with of door plant, the equal fixedly connected with mounting panel in bottom both ends of frame plate. The utility model discloses a through pre-buried ground and threaded rod guaranteed the fixed of base, prevent that the base from driving the measurement cabinet when using and rock, can reduce through the spring that the measurement cabinet receives external pressure or vibrations, increased the stability of measurement cabinet, increased the height of measurement cabinet through the rubber pad, prevent that surface water from causing the influence to the use of measurement cabinet.

Through the analysis, above-mentioned gas pipeline metering device is all inequality with the structure and the function of this application, does not influence the novelty of this application.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the intelligent buried gas metering device which can realize buried gas metering detection, does not need to design an additional power supply for a plurality of instruments and meters, and has the advantages of compact structure, safe use and reliability.

An intelligent buried gas metering device comprises a box body with an opening at the top, wherein the top of the box body is hinged and connected with an upper cover, the upper part of the box body is fixedly connected with a transparent window plate in a sealing way, one side of the box body is fixedly connected and communicated with an inlet connecting pipe, the other side of the box body is fixedly connected and communicated with an outlet connecting pipe, a metering unit and a detection unit are fixedly connected in the box body, and the box body is also communicated with an emptying pipe; the air inlet end of the metering unit is communicated with the inlet connecting pipe, and the air outlet end of the metering unit is communicated with the outlet connecting pipe.

The metering unit comprises an inlet fixing seat, an outlet fixing seat, a vertical pipe, a flowmeter and an IC card controller, wherein the inlet fixing seat, the outlet fixing seat and the vertical pipe are fixedly arranged on the inner wall of the box body; the exhaust end of the IC card controller is fixedly connected and communicated with the outlet fixing seat, and the bottom of the exhaust end of the IC card controller is fixedly provided with the supporting vertical pipe.

The inlet fixing seat comprises an inlet tube plate, a sleeve, an inlet flange tube and a filter screen, wherein the inlet tube plate is fixedly connected with the inner wall of the box body in a sealing way, and the inlet tube plate is fixedly connected with the sleeve communicated with the inlet connecting tube in a sealing way; the inside of the sleeve is sealed and fixedly inserted with an inlet flange pipe, a filter screen is fixedly connected inside the inlet flange pipe, and the exhaust end of the inlet flange pipe is fixedly connected with the air inlet end bolt of the flowmeter; the outlet fixing seat comprises an outlet tube plate and an outlet seat, wherein the air inlet end of the outlet seat is fixedly communicated with the exhaust end of the IC card controller, and the exhaust end of the outlet seat is fixedly connected with the outlet tube plate and communicated with the outlet connecting tube.

The detection unit comprises a cover opening sensor, a lighting lamp, a camera, a gas detector and a water immersion detector, wherein the cover opening sensor is fixedly connected to the inner wall of the box body at the upper part of the window plate, and the lighting lamp, the camera, the gas detector and the water immersion detector are fixedly connected to the inner wall of the box body at the lower part of the window plate; the inner wall of the box body is fixedly connected with a comprehensive junction box and a breather valve, wherein circuits of a cover opening sensor, a lighting lamp, a camera, a gas detector and a water immersion detector are distributed in the comprehensive junction box; the air inlet end of the breather valve is communicated with the interior of the box body below the window plate, and the air outlet end of the breather valve penetrates through the side wall of the box body and is communicated with the emptying pipe.

The top of the box body is hinged with the upper cover through a hinge, and the top surface of the box body is hinged with a spring connecting rod which movably supports the upper cover; the top surface of the upper cover is fixedly welded with an invisible handle, the bottom surface of the upper cover is fixedly connected with a plurality of rib plates for improving the structural strength of the upper cover, the periphery of the upper cover is fixedly provided with a sealing frame, and the upper cover is provided with a fingerprint lock.

And the middle part of the emptying pipe is provided with a comprehensive instrument, and the upper part of the emptying pipe is fixedly provided with a photovoltaic panel for supplying power to the comprehensive instrument.

The invention has the advantages and technical effects that:

the underground gas metering device is integrally arranged under the ground, and the inlet and outlet valves are buried welded valves and can be connected with a pipe network; the box body adopts an upper cover opening type, and the upper cover is a little higher than the ground when the box body is closed; the device is provided with a vent pipe which is connected with the metering box body through a metal connecting pipe, and a vent hole of the vent pipe is four meters higher than the ground, so that the device meets the design specification requirement of fuel gas; meanwhile, the instrument box can be equipped, so that the functions of observing various parameters of the equipment, summarizing, analyzing and remotely transmitting data and the like can be realized without opening the underground metering box. The underground metering box body consists of a box body, internal equipment and the like. The box body is made of steel materials, and the surface of the box body is subjected to anticorrosion treatment. A window is arranged in the box body. The window is made of colorless transparent light high-strength material and is embedded with a sealing strip. The window can be conveniently fastened on the box body through the pressing wrench, and the dustproof and leakage-proof functions are realized. The top of the box body is provided with an openable upper cover. The middle part of the upper cover is reinforced by a rib plate, and the periphery of the upper cover is provided with a sealing strip at the contact part with the edge of the upper part of the box body. After the upper cover is closed, the upper cover can be fixed and tightly pressed by the non-standard bolt, so that the functions of locking, water resistance and leakage prevention are realized. The upper cover is provided with the invisible handle, so that the operation is convenient and the appearance is attractive. Install fingerprint intelligence lock on the upper cover, non-managers have no right to uncap, the management of being convenient for. A spring ejector rod is arranged between the box body and the upper cover, so that the upper cover is convenient to lift, the upper cover can be prevented from falling back during maintenance, and the safety of operators is ensured. The box is equipped with the box frame all around, and the frame meets with the road surface is with the level when the batch meter is installed in the road surface condition, and the protection upper cover is not blocked stagnation such as road surface ceramic tile, and the box frame is equipped with the outlet simultaneously, avoids the box frame to deposit water. The box both sides set up inlet tube and outlet pipe, install inlet valve on the inlet tube, install outlet valve on the outlet pipe. The box body comprises a lower bottom plate, a vertical plate, an inlet tube plate, an outlet tube plate and the like. The metering box body is provided with a breathing connecting pipe and a signal connecting pipe which can be additionally arranged if needed. The breathing connecting pipe is internally connected with a breathing valve and externally connected with an emptying pipe; the signal connecting pipe is internally connected with the comprehensive junction box and is externally connected with the comprehensive instrument in the emptying pipe instrument box. The filter screen, the flowmeter and the IC card controller are arranged in the box body. The fuel gas enters the flowmeter after being filtered by the filter screen and then flows into a subsequent pipe network through the IC card controller. After the consumed gas reaches the limit, the IC card controller automatically closes the gas supply, and automatically opens to recover the gas supply after recharging. The cover opening sensor is arranged in the box body, and when the alarm limit is not removed, the alarm can be remotely transmitted through the comprehensive instrument when the box cover is opened, and the management department can know the alarm in real time when the box cover is illegally opened. The inside gas leakage detector that is equipped with of box, when taking place the gas leakage inside, the accessible is synthesized the instrument and is shown in real time and upload to and inform relevant personnel maintenance in time. The inside detector that intakes that is equipped with of box, if cause the box instrument room to intake because of reasons such as the upper cover is not covered tightly, the accessible is synthesized the instrument and is reported to the police and upload to and inform relevant personnel maintenance in time. The inside light that is equipped with of box is convenient for operate night. The inside camera that is equipped with of box can carry out real time monitoring to the indoor condition of instrument, can get the evidence if there is the illegal operation of personnel. The box intercommunication has the blow-down pipe, installs meter box and photovoltaic power supply unit on the blow-down pipe. The emptying pipe is connected with the breather valve, and when leakage occurs in the inner part, the leaked fuel gas can be dissipated to the high altitude to ensure safety.

Drawings

FIG. 1 is a front view (partially in section) of the present invention;

FIG. 2 is a top view of the present invention (without the upper cover installed);

FIG. 3 is a top view of the present invention (with the upper lid closed);

FIG. 4 is a schematic view of a flare structure of the present invention;

fig. 5 is a schematic view of the instrument box according to the present invention.

The names of all parts in the figure are shown in a table I:

table one: main parts watch

Detailed Description

For a further understanding of the contents, features and effects of the present invention, reference will now be made to the following examples, which are to be considered in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.

In addition, the breather valve, the cover opening sensor, the fingerprint lock, the comprehensive junction box, the IC card controller, the gas detector, the immersion detector, the camera, the comprehensive instrument and the flowmeter are all preferably mature products in the prior art.

In order to more clearly describe the specific embodiments of the present invention, an example is provided below:

structural description:

the underground metering device has the overall structure shown in the first, second and third figures, the emptying pipe is shown in the fourth figure, the main parts are shown in the first figure, the underground metering device mainly comprises a box body, a flowmeter, an IC card controller, the emptying pipe, an intelligent instrument and the like, and the underground metering device is externally connected with an instrument box.

The upper cover 19 is installed on the upper portion of the box body, the box body and the upper cover are connected through the hinge 23 and are of a single-side opening type, the opening side is welded with the invisible handle 42, the upper cover can be conveniently lifted, and the appearance is attractive. The upper cover 19 is fixed to the case by a nonstandard bolt. The periphery of the upper cover 19 is provided with 16 sealing frames, and the joint of the upper cover 19 and the box body is filled by sealing strips when the box body is in a closed state, so that the sealing, waterproof and leakage-proof functions are achieved. The upper cover 19 is provided with a fingerprint lock 20, so that an unspecified manager cannot open the upper cover, and the upper cover is prevented from being illegally opened. The fingerprint lock 20 internally mounted has emergency switch, when emergency or fingerprint lock suffered to destroy unable normal work, can general use specialized tool to open emergency switch, and then open the upper cover.

The middle part of the upper cover 19 is provided with a rib plate 18, so that the rigidity of the upper cover can be improved under the condition of small weight increment, and the bearing capacity can be increased.

A spring ejector rod 22 is arranged between the upper cover 19 and the box body, so that the upper cover is convenient to open and fix, the upper cover is prevented from falling back during maintenance, and the safety of operators is ensured.

The upper cover 19 is provided with a lock sleeve 21, the box body is provided with a lock sleeve connecting plate 44, and the upper cover can be pressed, fixed and sealed through bolts.

The box outer frame 14 is arranged around the box body, and when the metering box is positioned on a hard road surface, the periphery of the upper cover can be protected from being extruded by the road surface to influence the cover opening. The box body outer frame 14 is provided with a water drainage hole 46 to avoid water accumulation around the upper cover. Rib plates 13 are welded around the box body outer frame 14 to increase the strength of the box body outer frame.

A window 43 is mounted in the box. A window plate 24 and a window handle 45 are arranged in the 26 window frame, and 25 sealing rings are embedded around the window frame. The window plate is made of light, colorless and transparent high-strength material. The window is integrally fixed in the box body by a compression wrench 15, and an interlayer is formed for internal equipment, so that water and dust can be prevented from entering a lower space, and meanwhile, leaked fuel gas can be prevented from entering spaces in the window and the upper cover. The window 43 and the upper cover 19 form two seals, so that the safety is improved.

The periphery of the box body is provided with a breathing connecting pipe 11 and a signal connecting pipe 29 which can be respectively used for installing a breathing valve 12, an instrument connecting line and the like.

The breather valve 12 is arranged on the breather connecting pipe 11, so that when gas leakage occurs in internal equipment, the gas can enter the emptying pipe which is four meters higher than the ground through the breather valve and the connected metal hose to escape into the atmosphere. The installation of the breather valve eliminates the hidden danger of gas ejection when the upper cover is opened during inspection, maintenance and the gas pressure borne by the window and the upper cover due to internal gas leakage; adopt the breather valve can make the gas that leaks flow out the box and outside humid air can't flow in, avoid forming air gas mist, reduced potential explosion hazard, also avoided the equipment corrosion that inside air humidity caused simultaneously.

The box body mainly comprises an inlet valve 4, an inlet connecting pipe 3, an outlet connecting pipe 33, an outlet valve 32, a lower bottom plate 1, a vertical plate 2, an inlet pipe plate 10, an outlet pipe plate 35 and the like. Ribs 34 are arranged on the inlet pipe and the outlet pipe of the box body, so that the overall strength is improved, and the risk that the welding line is broken due to the fact that the tensile force between the inlet pipe and the outlet pipe and the welding line of the box body is increased due to pipe network settlement is avoided.

An inlet tube plate 10 and an outlet tube plate 35 are welded on the vertical plate of the box body 2.

A sleeve 8 is welded on the inlet tube plate 10, an inlet flange tube 7 is arranged on the sleeve 8, and a filter screen 6 is arranged on the inlet flange tube 7. The inlet flange pipe 7 can axially move and rotate in the sleeve 8, so that the flowmeter is convenient to mount, and meanwhile, a sealing ring 9 is mounted between the inlet flange pipe and the sleeve to realize sealing.

The outlet base 31 is welded to the outlet tube plate 35. The outlet seat is provided with 30IC card controllers. A partition plate 36 and a vertical pipe 37 are welded below the outlet base, so that the outlet base is sealed and supported.

The inlet flange pipe 7 is installed with the flowmeter 5, and the flowmeter and the 30IC card controller are installed and fastened by bolts.

A valve 38 communicates with the interior and provides gas access during testing and maintenance.

The case body is provided with a cover opening sensor 17, alarm limit can be set at the comprehensive instrument 53, the upper cover is opened when the alarm limit is not removed, and the system regards as illegal cover opening remote transmission alarm to prompt a management department.

The tank is provided with a water immersion detector 41. When water enters due to the fact that the upper cover 19 and the window 43 are not pressed tightly, the comprehensive instrument 53 can detect that water enters the box body through the water immersion detector 41, and then a remote alarm is given to prompt a management department to maintain.

The box body is internally provided with an illuminating lamp 27 which can provide illumination when in operation at night, thereby being convenient for personnel to operate.

The box body is internally provided with a comprehensive junction box 28, and the cover opening sensor 17, the illuminating lamp 27, the immersion detector 41, the flowmeter 5 and the cable of the IC card controller can be connected into the comprehensive instrument 53 through a signal connecting pipe 29 and a pipeline.

The comprehensive junction box 28 is internally and integrally provided with a camera 39 and a gas detector 40.

The camera can monitor and upload the operating condition in the instrument room, and can collect evidence for illegal operation.

When gas leakage occurs inside, the comprehensive instrument can display the gas concentration in the instrument room in real time through the gas detector 40, and can set an alarm value, and remote transmission can be performed during alarming so as to inform a management department to maintain.

The metering box is provided with a vent pipe 50 which is connected with the box body by a metal hose.

The vent pipe is provided with a photovoltaic panel 49 which can utilize solar energy to generate electricity for equipment.

The emptying pipe is provided with an instrument box 48 and a built-in comprehensive instrument 53. The connecting pipe interface 47 can be connected with the breathing connecting pipe 11 to realize the air pressure balance in the box body, and is connected with the signal connecting pipe 29 and internally provided with an instrument signal wire and the like.

After the emptying pipe 50 is erected, the top end pipe orifice is four meters higher than the ground, and gas leaked inside can escape to the high altitude, so that the peripheral safety of equipment is ensured.

The instrument box 48 is provided with a box door 52 and a fingerprint lock 51, so that safety management is facilitated. The instrument box can be installed on a blow-down pipe or an independent bracket.

An integrated instrument 53 is mounted in the instrument box 48, which has the following features:

1. the internal integrated electronic instrument is integrated, can be connected with multiple signals, such as switching value signals, flow, leakage alarm signals and the like, and can be displayed on a liquid crystal screen in real time;

2. the recording frequency can be set, the recorded parameters can be stored, the operation records can be stored, the related authority can be set for reading and deleting the stored parameters and the operation records, and the data can be conveniently checked and ensured to be real;

3. the data interface is arranged and can be connected with the mobile storage device and the computer, so that data can be conveniently exported and system parameters can be conveniently modified;

4. the external signal wire can also be remotely transmitted to the monitoring room computer in a wireless mode through external equipment, and when the running condition of the equipment is abnormal and relevant parameters reach set values, sound and light alarm prompt can be realized on the integrated instrument and the monitoring room computer;

5. each integrated meter has a unique hardware digital signature that ensures that the modified parameters can only be manipulated by a designated professional on the integrated meter or connected computer.

The working principle is as follows:

the gas in the pipe network gets into underground batch meter inlet tube, gets into flowmeter and IC-card controller after filtering, flows out the follow-up pipe network of entering by the outlet pipe afterwards.

The flowmeter is connected with the IC card controller through a signal line, the flow accumulation signal of the flowmeter is transmitted to the IC card controller, the IC card controller automatically closes to stop gas supply after the consumed gas flow is accumulated to a limit, and the IC card controller automatically opens to recover gas supply after recharging.

When the maintenance is examined, close access & exit valve, can release the interior gas of equipment through opening the atmospheric valve, reduce the risk.

The breather valve on the box body vertical plate is connected to the emptying pipe emptying interface through a metal hose, so that leaked fuel gas can enter the emptying pipe through the breather valve and the metal hose and is dissipated to the atmosphere through the emptying port. The breather valve is the check valve, can be so that the gas of leakage flows out the box and outside air can't flow in, avoids forming air gas mist, has reduced potential explosion hazard, avoids outside humid air to flow in the box simultaneously, keeps dry in the box.

Parameters of the flow meter and the IC card controller are uploaded to the comprehensive meter in the meter box, and field or remote recharging operation can be performed through the comprehensive meter under the condition that the upper cover of the metering box is not opened.

The data acquisition system comprises a cover opening sensor, a water immersion detector, a camera, a gas detector and the like, and can realize functions of illegal cover opening alarm, water inlet alarm, leakage alarm, real-time monitoring, parameter uploading and the like.

The advantages and positive effects are as follows:

1. the device is integrally arranged underground, and only the upper cover is slightly higher than the ground, so that a large civil engineering amount required by a traditional ground metering box is not required to be built, the floor area is saved, the defects of shielding sight and the like are avoided, and the risk of being impacted by vehicles is eliminated.

2. The device has compact structure and small volume, and realizes effective utilization of space.

3. The device is integrally of a steel structure, can effectively prevent electromagnetic interference or artificial gas stealing of the flowmeter from the outside, and can bear load.

4. The whole body is made into an upper cover-opening type box body, the box body is made of steel materials, and the sealing part is sealed by a sealing gasket, so that the box body can bear load, and is waterproof and leakproof.

5. The transparent window is arranged, and the reading of each instrument and the working condition of equipment can be conveniently observed by opening the upper cover, so that the inspection is convenient; the transparent window and the box body are sealed by adopting a sealing strip, so that the waterproof, dustproof and leakproof effects are ensured.

6. In order to deal with the gas leakage caused by equipment failure and improper installation, an emptying pipe is erected beside the box body and is connected through a metal hose; the blow-down pipe is four meters higher than the ground, can effectively release the leaked fuel gas into the atmosphere for dilution, the pipe body can be painted green to match with the surrounding green plants, and the upper end of the pipe can be made into a street lamp or a flagpole and the like for decoration so as to ensure the attractiveness.

7. The box body is arranged underground, and the opening of the upper cover needs to be operated by using a non-standard wrench, so that the difficulty of illegally opening the cover is increased, and meanwhile, the related equipment is prevented from illegally modifying parameters and cutting off gas supply.

8. The cover opening sensor is installed, so that the alarm can be remotely transmitted in time when the cover is opened illegally, and the management is convenient.

9. The fingerprint lock is installed, and when the non-appointed personnel operate, the fingerprint lock can not be opened, so that the equipment is prevented from being illegally operated.

10. The water inlet detector is arranged, and the alarm can be remotely transmitted immediately after the water enters the box body, so that the water inlet detector can be maintained in time.

11. The camera is installed, so that the operation condition of the equipment can be remotely observed without opening the box cover, and inspection is facilitated.

12. The gas leakage detector is installed, so that the gas leakage detector can give an alarm in time and remotely when leakage occurs, and timely maintenance can be realized.

13. The data acquisition system is arranged, and can acquire and upload signals such as equipment operation parameters and alarms, so that data statistics and management are facilitated; parameters of the flow meter and the IC card controller are uploaded to the comprehensive meter in the meter box, and field or remote recharging operation can be performed through the comprehensive meter under the condition that the upper cover of the metering box is not opened.

The invention adopts mature products and mature technical means in the prior art.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. The utility model provides an intelligence buries ground gas metering device which characterized in that: the device comprises a box body with an opening at the top, wherein the top of the box body is hinged and connected with an upper cover, the upper part of the box body is fixedly connected with a transparent viewing plate in a sealing way, one side of the box body is fixedly connected and communicated with an inlet connecting pipe, the other side of the box body is fixedly connected and communicated with an outlet connecting pipe, a metering unit and a detection unit are fixedly connected in the box body, and the box body is also communicated with a vent pipe; the air inlet end of the metering unit is communicated with the inlet connecting pipe, and the air outlet end of the metering unit is communicated with the outlet connecting pipe.

2. The intelligent buried gas metering device according to claim 1, characterized in that: the metering unit comprises an inlet fixing seat, an outlet fixing seat, a vertical pipe, a flowmeter and an IC card controller, wherein the inlet fixing seat, the outlet fixing seat, the vertical pipe, the flowmeter and the IC card controller are fixedly arranged on the inner wall of the box body; the exhaust end of the IC card controller is fixedly connected and communicated with the outlet fixing seat, and the bottom of the exhaust end of the IC card controller is fixedly supported by the vertical pipe.

3. The intelligent buried gas metering device according to claim 2, characterized in that: the inlet fixing seat comprises an inlet tube plate, a sleeve, an inlet flange tube and a filter screen, wherein the inlet tube plate is fixedly connected with the inner wall of the box body in a sealing way, and the inlet tube plate is fixedly connected with the sleeve communicated with the inlet connecting tube in a sealing way; the inner part of the sleeve is sealed and fixedly inserted with an inlet flange pipe, a filter screen is fixedly connected inside the inlet flange pipe, and the exhaust end of the inlet flange pipe is fixedly connected with the air inlet end bolt of the flowmeter; the outlet fixing seat comprises an outlet tube plate and an outlet seat, wherein the air inlet end of the outlet seat is fixedly communicated with the exhaust end of the IC card controller, and the exhaust end of the outlet seat is fixedly connected with the outlet tube plate and communicated with the outlet connecting tube.

4. The intelligent buried gas metering device according to claim 1, characterized in that: the detection unit comprises a cover opening sensor, a lighting lamp, a camera, a gas detector and a water immersion detector, wherein the cover opening sensor is fixedly connected to the inner wall of the box body at the upper part of the window plate, and the lighting lamp, the camera, the gas detector and the water immersion detector are fixedly connected to the inner wall of the box body at the lower part of the window plate; the inner wall of the box body is fixedly connected with a comprehensive junction box and a breather valve, wherein circuits of a cover opening sensor, a lighting lamp, a camera, a gas detector and a water immersion detector are distributed in the comprehensive junction box; the air inlet end of the breather valve is communicated with the interior of the box body below the window plate, and the air outlet end of the breather valve penetrates through the side wall of the box body and is communicated with the emptying pipe.

5. The intelligent buried gas metering device according to claim 1, characterized in that: the top of the box body is hinged with the upper cover through a hinge, and the top surface of the box body is hinged with a spring connecting rod which movably supports the upper cover; the top surface of the upper cover is fixedly welded with an invisible handle, the bottom surface of the upper cover is fixedly connected with a plurality of rib plates for improving the structural strength of the upper cover, the periphery of the upper cover is fixedly provided with a sealing frame, and the upper cover is provided with a fingerprint lock.

6. The intelligent buried gas metering device according to claim 1, characterized in that: the middle part of the emptying pipe is provided with a comprehensive instrument, and the upper part of the emptying pipe is fixedly provided with a photovoltaic panel for supplying power to the comprehensive instrument.