Fuel gas metering box

Abstract

The utility model relates to the technical field of gas equipment, in particular to a gas metering box. Comprising a box body, a collector and a junction box are further installed on the box body, the collector is connected with an electromagnetic valve, an NB-IoT gas meter, a pressure detection module and the junction box through a sealed explosion-proof pipe and a data line in the sealed explosion-proof pipe, and data transmission is conducted on the collector and the electromagnetic valve, the NB-IoT gas meter, the pressure detection module and the junction box; the external controllers of a plurality of gas metering boxes can be managed in a centralized manner, so that the inconvenience of operating the gas metering boxes everywhere by workers is reduced; the sealing explosion-proof pipe is used for wrapping the data line, so that internal pipelines and connection can be protected, and the safety of the gas metering box is prevented from being influenced by the problems of pipeline aging, electric leakage and the like; a collector and a junction box are installed in the box body, and the collector is connected with the electromagnetic valve, the NB-IoT gas meter and the pressure detection module through data lines in the sealed anti-explosion pipe. The external controller can control on-off of the electromagnetic valve and on-off of a built-in valve of the NB-IoT gas meter, and automatic control is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas equipment, in particular to a gas metering box. Background Art

[0002] As the attention paid to environmental protection gradually increases, natural gas has become more and more popular as a clean energy and has been widely used in all walks of life.

[0003] At present, patent No. CN202222887059.X discloses a gas metering box with solenoid valve control. By adding a control box and a solenoid valve, the control box can simultaneously control the switch of the solenoid valve and the built-in valve switch of the NB-IoT gas meter, so that when the pressure detection module detects that the pressure of the gas pipeline is abnormal, the solenoid valve and the built-in valve of the NB-IoT gas meter are closed at the same time, realizing a double insurance cut-off method; however, it is found in actual use that when the control box is directly installed in the metering box, when the control box needs to be operated, the staff needs to operate the metering boxes in various places, which is not convenient for centralized management. For the metering boxes installed outdoors, it is easy for non-staff to damage the metering box and perform informal operations on the control box. The components inside the metering box are generally only connected by data cables, which are prone to aging and static electricity, affecting the safety of the metering box.

[0004] Based on this, the applicant considered designing a gas metering box that can improve safety. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a gas metering box that can improve safety.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A gas metering box comprises a box body, in which an NB-IoT gas meter component is installed, the NB-IoT gas meter component comprises an air inlet pipeline, a control metering pipeline and an air outlet pipeline which are sequentially connected from the air inlet end to the air outlet end, and an electromagnetic valve, a pressure detection module and an NB-IoT gas meter are sequentially installed on the control metering pipeline from the air inlet end to the air outlet end, and the box also comprises an external controller disposed outside the box body, and a collector and a junction box are also installed on the box body, the collector is respectively connected to the electromagnetic valve, the NB-IoT gas meter, the pressure detection module and the junction box through a sealed explosion-proof pipe and a data line therein and performs data transmission, the junction box is connected to the external controller through a sealed explosion-proof pipe and a data line therein and performs data transmission, and the external controller controls the switch of the electromagnetic valve and the switch of the built-in valve of the NB-IoT gas meter according to the pressure information detected by the pressure detection module.

[0008] The working principle and advantages of a gas metering box in this technical solution are:

[0009] The external controller is placed outside the box, and the external controllers of multiple gas meter boxes can be centrally managed, reducing the inconvenience of staff operating gas meter boxes in various places, and reducing the risk of outdoor gas meter boxes being damaged or informally operated by non-staff; using sealed explosion-proof tubes to wrap the data cables can protect the internal pipelines and connections, and prevent the safety of the gas meter box from being affected by pipeline aging, leakage and other problems. The sealed explosion-proof tube can prevent leakage and provide fire protection; a collector and a junction box are installed inside the box. The collector is connected to the solenoid valve, NB-IoT gas meter and pressure detection module through the data cable in the sealed explosion-proof tube. The junction box is connected to the collector through the data cable to realize centralized data collection and transmission. The junction box provides an easily accessible point, allowing staff to quickly find and deal with problems, and the junction box can be used as a safe isolation point. When it is necessary to cut off the power supply for maintenance, the circuit can be disconnected at the junction box to ensure safety. The junction box also helps to organize data cables to avoid clutter between the external controller and the collector. The external controller can control the switch of the solenoid valve and the built-in valve of the NB-IoT gas meter based on the pressure information detected by the pressure detection module collected by the collector, realize automatic control, improve response speed and operation safety. When the pressure detection module detects that the pressure of the gas pipeline is abnormal, the external controller can simultaneously close the solenoid valve and the built-in valve of the NB-IoT gas meter, providing double protection to prevent gas leakage. The use of external controllers and sealed explosion-proof pipes enhances the reliability and stability of the entire gas metering box system, which is not only suitable for newly built gas metering systems, but also convenient for upgrading and renovating existing systems, improving the adaptability and flexibility of the system.

[0010] Furthermore, the collector is fixedly installed in the box.

[0011] Furthermore, the junction box is fixedly mounted on the outer side wall of the box body.

[0012] Furthermore, a through hole for the sealed explosion-proof tube to pass through is opened on the side wall of the box body.

[0013] Furthermore, the collector is fixedly installed on the bottom side of the box body and below the NB-IoT gas meter.

[0014] Furthermore, the sealed explosion-proof pipe includes an annular bellows, a retaining ring, a locking nut and an embedded sealing ring, the locking nut is sleeved on the end of the annular bellows, the retaining ring is clamped in the annular groove of the end of the annular bellows, and the embedded sealing ring includes a convex tube embedded in the port of the annular bellows; the collector, solenoid valve, NB-IoT gas meter, pressure detection module, junction box and external controller interface are fixedly connected with a adapter nut threadedly connected to the locking nut.

[0015] Furthermore, the sealed explosion-proof pipe includes a spiral bellows, a plug baffle, a locking nut and a conical sealing ring, the locking nut is sleeved on the end of the spiral bellows, the plug baffle includes an annular baffle and a threaded convex pipe fixedly connected to the annular baffle, the threaded convex pipe is threadedly connected to the inner side of the spiral bellows, and the conical sealing ring is sleeved on the end of the spiral bellows; the collector, solenoid valve, NB-IoT gas meter, pressure detection module, junction box and external controller interface are fixedly connected with a adapter nut threadedly connected to the locking nut.

[0016] Furthermore, a master control ball valve and a filter are sequentially installed on the air intake pipeline from the air intake end to the air outlet end.

[0017] Furthermore, a pressure regulator is installed on the control metering pipeline, and the pressure regulator is located between the solenoid valve and the pressure detection module.

[0018] Furthermore, it also includes a mobile terminal for transmitting data with the external controller, the mobile terminal is used to receive and display data collected by the external controller, and the mobile terminal is used to send control instructions to the external controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional structure of the gas meter box of the utility model embodiment is shown in FIG. Figure 1 ;

[0020] Figure 2 The three-dimensional structure of the gas meter box of the utility model embodiment is shown in FIG. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the overall structure of the gas metering box of the utility model embodiment;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the sealed explosion-proof tube according to an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the explosion structure of the sealed explosion-proof pipe according to an embodiment of the utility model;

[0024] Figure 6This is a schematic cross-sectional structure diagram of a sealed explosion-proof tube according to an embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the explosion structure of a sealed explosion-proof pipe in another embodiment of the utility model;

[0026] Figure 8 This is a schematic cross-sectional structure diagram of a sealed explosion-proof tube according to another embodiment of the utility model;

[0027] In the above drawings: 100, box body; 101, through hole;

[0028] 210, air inlet pipeline; 220, control metering pipeline; 230, air outlet pipeline; 240, master control ball valve; 250, filter; 260, solenoid valve; 270, pressure regulator; 280, pressure detection module; 290, NB-IoT gas meter;

[0029] 310, collector; 320, junction box;

[0030] 400, sealed explosion-proof pipe; 410, annular bellows; 420, locking nut; 430, adapter nut; 440, retaining ring; 450, embedded sealing ring; 460, spiral bellows; 470, plug baffle; 480, conical sealing ring. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] Refer to Figures 1 to 8The present embodiment provides a gas metering box, including a box body 100, in which an NB-IoT gas meter 290 component is installed, and the NB-IoT gas meter 290 component includes an air inlet pipeline 210, a control metering pipeline 220 and an air outlet pipeline 230 which are sequentially connected from the air inlet end to the air outlet end, and a solenoid valve 260, a pressure detection module 280 and an NB-IoT gas meter 290 are sequentially installed on the control metering pipeline 220 from the air inlet end to the air outlet end, and the external controller is placed outside the box body 100, and the box body 100 is also installed A collector 310 and a junction box 320 are installed. The collector 310 is connected to the solenoid valve 260, the NB-IoT gas meter 290, the pressure detection module 280 and the junction box 320 through the sealed explosion-proof tube 400 and the data line therein for data transmission. The junction box 320 is connected to the external controller through the sealed explosion-proof tube 400 and the data line therein for data transmission. The external controller controls the switch of the solenoid valve 260 and the built-in valve of the NB-IoT gas meter 290 according to the pressure information detected by the pressure detection module 280.

[0033] In this embodiment, the external controller is placed outside the box 100, and the external controllers of multiple gas meter boxes can be centrally managed, reducing the inconvenience of staff operating gas meter boxes in various places, and reducing the risk of outdoor gas meter boxes being damaged or informally operated by non-staff; using a sealed explosion-proof tube 400 to wrap the data cable can protect the internal pipelines and connections, and prevent the safety of the gas meter box from being affected by pipeline aging, leakage and other problems. The sealed explosion-proof tube 400 can prevent leakage and provide fire protection; a collector 310 and a junction box 320 are installed inside the box 100. The collector 310 is connected to the solenoid valve 260, the NB-IoT gas meter 290 and the pressure detection module 280 through the data cable in the sealed explosion-proof tube 400. The junction box 320 is connected to the collector 310 through the data cable to realize centralized data collection and transmission. The junction box 320 provides an easily accessible point so that staff can quickly find and deal with problems, and the junction box 320 can As a safety isolation point, when it is necessary to cut off the power supply for maintenance, the circuit can be disconnected at the junction box 320 to ensure safety. The junction box 320 also helps to organize data cables to avoid cluttered data cables between the external controller and the collector 310. The external controller can control the switch of the solenoid valve 260 and the built-in valve of the NB-IoT gas meter 290 according to the pressure information detected by the pressure detection module 280 collected by the collector 310, so as to realize automatic control and improve the response speed and operation safety. When the pressure detection module 280 detects that the pressure of the gas pipeline is abnormal, the external controller can simultaneously close the solenoid valve 260 and the built-in valve of the NB-IoT gas meter 290 to provide double protection to prevent gas leakage. Through the use of the external controller and the sealed explosion-proof pipe 400, the reliability and stability of the entire gas metering box system are enhanced, which is not only suitable for newly built gas metering systems, but also convenient for upgrading and transforming existing systems, thereby improving the adaptability and flexibility of the system.

[0034] Preferably, if Figure 2 and Figure 3 As shown, the collector 310 is fixedly installed in the box 100; the collector 310 is fixedly installed in the box 100 and can operate stably and safely. Specifically, the collector 310 is fixedly installed on the bottom side of the box 100 and is located below the NB-IoT gas meter 290, and the layout is reasonable.

[0035] Preferably, if Figure 1 to Figure 3 As shown, the junction box 320 is fixedly mounted on the outer wall of the box body 100, so that the staff can access the junction box 320 and operate it conveniently.

[0036] Preferably, if Figure 1 and Figure 2As shown, a through hole 101 for the sealed explosion-proof tube 400 to pass through is opened on the side wall of the box body 100, and the through hole 101 is for the sealed explosion-proof tube 400 connected to the collector 310 and the junction box 320 at both ends to pass through.

[0037] Preferably, if Figure 1 to Figure 6 As shown, the sealed explosion-proof pipe 400 includes an annular bellows 410, a retaining spring 440, a locking nut 420 and an embedded sealing ring 450. The locking nut 420 is sleeved on the end of the annular bellows 410, the retaining spring 440 is clamped in the annular groove at the end of the annular bellows 410, and the embedded sealing ring 450 includes a convex tube embedded in the port of the annular bellows 410; the collector 310, the solenoid valve 260, the NB-IoT gas meter 290, the pressure detection module 280, the junction box 320 and the external controller interface are fixedly connected with a transfer nut 430 threadedly connected to the locking nut 420; the annular bellows 410 is flexible and elastic, and can be flexibly arranged according to the data line, and the card The spring 440 is clamped in the annular groove at the end of the annular bellows 410, and plays a limiting role on the locking nut 420 sleeved on the end of the annular bellows 410. When the locking nut 420 is threadedly connected with the adapter nut 430, the locking nut 420 can drive the retaining spring 440 and the end surface of the annular bellows 410 to squeeze and seal the embedded sealing ring 450, thereby ensuring the stability and sealing of the connection. The collector 310, solenoid valve 260, NB-IoT gas meter 290, pressure detection module 280, junction box 320 and the interface of the external controller are fixedly connected with the adapter nut 430 threadedly connected to the locking nut 420, thereby realizing quick and convenient connection and disassembly.

[0038] Preferably, if Figure 1 , Figure 2 , Figure 3 , Figure 7 as well as Figure 8As shown, as another embodiment, the sealed explosion-proof pipe 400 includes a spiral bellows 460, a plug baffle 470, a locking nut 420 and a conical sealing ring 480, the locking nut 420 is sleeved on the end of the spiral bellows 460, the plug baffle 470 includes an annular baffle and a threaded convex pipe fixedly connected to the annular baffle, the threaded convex pipe is threadedly connected to the inner side of the spiral bellows 460, and the conical sealing ring 480 is sleeved on the end of the spiral bellows 460; the collector 310, the solenoid valve 260, the NB-IoT gas meter 290, the pressure detection module 280, the junction box 320 and the external controller interface are fixedly connected with a transfer nut 430 threadedly connected to the locking nut 420; the spiral bellows 460 is flexible and elastic, and can be flexibly arranged according to the data line, and the lock When the tightening nut 420 is threadedly connected with the adapter nut 430, the locking nut 420 can drive the conical sealing ring 480 to move toward the plug baffle 470 and the adapter nut 430, and the plug baffle 470 and the locking nut 420 squeeze the conical sealing ring 480. When the conical sealing ring 480 is squeezed, it moves axially and radially, and the sealing effect is good. The inner bottom side of the locking nut 420 is bowl-shaped, which can more fully squeeze the conical sealing ring 480 to ensure the stability and sealing of the connection; the collector 310, the solenoid valve 260, the NB-IoT gas meter 290, the pressure detection module 280, the junction box 320 and the interface of the external controller are fixedly connected with the adapter nut 430 threadedly connected to the locking nut 420, so as to realize quick and convenient connection and disassembly.

[0039] Preferably, if Figure 2 and Figure 3 As shown, a master control ball valve 240 and a filter 250 are installed on the air intake pipeline 210 in sequence from the air intake end to the air outlet end; the master control ball valve 240 on the air intake pipeline 210 can realize manual control of the switch of the air intake pipeline 210, which is convenient for maintenance; the filter 250 installed on the air intake pipeline 210 can filter impurities, protect devices such as the solenoid valve 260, the pressure detection module 280 and the NB-IoT gas meter 290, and improve the stability and reliability of the operation of the gas metering box.

[0040] Preferably, if Figure 2 and Figure 3 As shown, a pressure regulator 270 is also installed on the control metering pipeline 220, and the pressure regulator 270 is located between the solenoid valve 260 and the pressure detection module 280; the pressure regulator 270 can reduce the pressure of high-pressure natural gas to a pressure that the NB-IoT gas meter 290 can withstand, so that the gas metering box is not only suitable for low-pressure natural gas pipelines, but also for medium-pressure natural gas pipelines, with good versatility.

[0041] Preferably, if Figure 3As shown, the gas meter box also includes a mobile terminal for transmitting data with an external controller. The mobile terminal is used to receive and display data collected by the external controller, and the mobile terminal is used to send control instructions to the external controller; the mobile terminal is used to receive and display data information received by the external controller, and the mobile terminal can also send control instructions to the external controller to monitor the gas meter box in real time.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A gas metering box, comprising a box body, in which an NB-IoT gas meter assembly is installed, wherein the NB-IoT gas meter assembly comprises an air inlet pipeline, a control metering pipeline and an air outlet pipeline which are sequentially connected from the air inlet end to the air outlet end, and a solenoid valve, a pressure detection module and an NB-IoT gas meter are sequentially installed on the control metering pipeline from the air inlet end to the air outlet end, characterized in that: It also includes an external controller placed outside the box, and a collector and a junction box are also installed on the box. The collector is connected to the solenoid valve, NB-IoT gas meter, pressure detection module and junction box through a sealed explosion-proof tube and a data line therein, and data is transmitted. The junction box is connected to the external controller through a sealed explosion-proof tube and a data line therein, and data is transmitted. The external controller controls the switch of the solenoid valve and the switch of the built-in valve of the NB-IoT gas meter according to the pressure information detected by the pressure detection module.

2. A gas metering box as claimed in claim 1, characterized in that: The collector is fixedly installed in the box.

3. A gas metering box as claimed in claim 2, characterized in that: The junction box is fixedly mounted on the outer side wall of the box body.

4. A gas metering box as claimed in claim 3, characterized in that: A through hole for the sealed explosion-proof tube to pass through is provided on the side wall of the box body.

5. A gas metering box as claimed in claim 2, characterized in that: The collector is fixedly mounted on the bottom side of the box body and is located below the NB-IoT gas meter.

6. A gas metering box as claimed in claim 1, characterized in that: The sealed explosion-proof pipe includes an annular bellows, a retaining ring, a locking nut and an embedded sealing ring. The locking nut is sleeved on the end of the annular bellows, the retaining ring is clamped in the annular groove of the end of the annular bellows, and the embedded sealing ring includes a convex tube embedded in the port of the annular bellows; the collector, solenoid valve, NB-IoT gas meter, pressure detection module, junction box and external controller interface are fixedly connected with a transfer nut threadedly connected to the locking nut.

7. A gas metering box as claimed in claim 1, characterized in that: The sealed explosion-proof pipe includes a spiral bellows, a plug baffle, a locking nut and a conical sealing ring, the locking nut is sleeved on the end of the spiral bellows, the plug baffle includes an annular baffle and a threaded convex pipe fixedly connected to the annular baffle, the threaded convex pipe is threadedly connected to the inner side of the spiral bellows, and the conical sealing ring is sleeved on the end of the spiral bellows; the collector, solenoid valve, NB-IoT gas meter, pressure detection module, junction box and external controller interface are fixedly connected with a transfer nut threadedly connected to the locking nut.

8. A gas metering box as claimed in claim 1, characterized in that: A master control ball valve and a filter are sequentially installed on the air intake pipeline from the air intake end to the air outlet end.

9. A gas metering box as claimed in claim 1, characterized in that: A pressure regulator is also installed on the control metering pipeline, and the pressure regulator is located between the solenoid valve and the pressure detection module.

10. A gas metering box according to any one of claims 1 to 9, characterized in that: It also includes a mobile terminal for transmitting data with the external controller, wherein the mobile terminal is used to receive and display data collected by the external controller, and the mobile terminal is used to send control instructions to the external controller.

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