Natural gas metering equipment capable of switching meters

Abstract

The utility model relates to the technical field of natural gas metering equipment, and discloses natural gas metering equipment capable of switching meters. The natural gas metering equipment capable of switching the meter comprises a tee joint, an electromagnetic valve is fixedly installed at the front end of the tee joint, a connecting pipe is fixedly installed at the front end of the electromagnetic valve, a magnetic ring is fixedly installed in the connecting pipe, a metal net is fixedly installed in the magnetic ring, the magnetic ring is fixedly installed in the connecting pipe, and the metal net is fixedly installed in the connecting pipe. The connecting pipe is installed on one side of the electromagnetic valve at the front end and the rear end of the tee joint through the flange structure, after installation is completed, gas needs to pass through the metal net in the magnetic ring, the metal net is fixedly installed in the magnetic ring, the magnetic ring enables the metal net to have magnetic force, and rust chippings can be blocked by the metal net in the process of passing through the metal net; and meanwhile, the platinum wire can be adsorbed on the surface of the metal net under the influence of magnetic force, so that rust scraps can be effectively prevented from entering the sampling pipe to damage the platinum wire.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas metering equipment, in particular to a natural gas metering equipment with a switchable meter. Background Technique

[0002] The main use of natural gas is as fuel, which can be used to manufacture carbon black, chemicals and liquefied petroleum gas. Propane and butane produced from natural gas are important raw materials for modern industry.

[0003] For the existing Chinese utility model patent with the reference publication number of CN220152483U, it discloses a new type of natural gas metering device, including a meter and a display. A fixing plate is fixedly connected to the outer surface of the meter, a connecting plate is fixedly connected to the outer surface of the fixing plate, a fixing strip is fixedly connected to the outer surface of the connecting plate, a screw groove is opened on the upper surface of the fixing strip, a screw rod is rotatably connected to the inner groove of the screw groove, a fixing pipe is rotatably connected to the outer surface of the screw rod, and a fixing groove is opened on the inner side of the fixing pipe. In the utility model, by sliding the outer connecting pipe into the inner side of the sleeve and connecting it with the fixing pipe, and then fitting and connecting it to the inner side of the fixing groove, and then rotating the screw rod to be rotatably connected to the screw groove, the position of the outer connecting pipe can be fixed, and then the outer connecting pipe can be fixedly connected to the meter. In this way, it is not only convenient to install it, but also can ensure its sealing degree and prevent air leakage.

[0004] The existing hot-wire flowmeter detects the gas flow through the resistance change generated by the platinum wire when the gas passes through. Since the diameter of the platinum wire is small, and due to the possible rust situation inside the pipeline, debris may contact the platinum wire under the drive of the air flow, resulting in the breakage of the platinum wire. At the same time, since the existing metering equipment needs to be connected to the conveying pipeline, when replacing the meter, leakage will occur, and the maintenance is very inconvenient. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a natural gas metering equipment with a switchable meter, which has the advantages of being convenient for maintenance and being able to avoid the damage of the platinum wire by rust debris, and solves the above technical problems.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solutions: A natural gas metering device with a switchable meter, comprising: a tee, an electromagnetic valve is fixedly installed at the front end of the tee, a connecting pipe is fixedly installed at the front end of the electromagnetic valve, a magnetic ring is fixedly installed inside the connecting pipe, a metal mesh is fixedly installed inside the magnetic ring, a diversion ring is fixedly installed at the front end of the magnetic ring, a limiting pipe is fixedly installed at the upper end of the tee, a packing is filled inside the limiting pipe, a limiting column is movably installed at the upper end of the limiting pipe, a meter is inserted through the limiting column, a sampling pipe is arranged at the lower end of the meter, and a platinum wire is fixedly installed inside the sampling pipe; the electromagnetic valve can close the front and rear ends of the tee when replacing the meter.

[0009] As a preferred technical solution of the present utility model, the tee is in a "T" - shaped structure, the branch of the tee is vertically upward, and the electromagnetic valve is symmetrically installed before and after with the center of the tee as the reference at the front and rear ends of the tee; the tee can facilitate the airflow to pass through the sampling pipe.

[0010] As a preferred technical solution of the present utility model, the tee, the electromagnetic valve, and the connecting pipe are connected through a flange structure, and the outer side surface of the magnetic ring is fixedly connected to the inner wall of the connecting pipe; the connecting pipe can limit the position of the magnetic ring.

[0011] As a preferred technical solution of the present utility model, the metal mesh is made of iron, the outer side surface of the diversion ring is fixedly connected to the inner wall of the connecting pipe, and a chamfer structure is arranged at the inner side of the front end of the diversion ring; the metal mesh can intercept rust fragments.

[0012] As a preferred technical solution of the present utility model, a hexagonal prism - shaped convex structure is arranged on the outer side of the top end of the limiting column, a threaded structure is arranged on the outer side of the limiting column, and a groove that is fitted with the threaded structure of the limiting column is arranged on the inner wall of the limiting pipe; the limiting column can apply pressure to the packing.

[0013] As a preferred technical solution of the present utility model, an opening structure that is fitted with the sampling pipe is arranged at the bottom end of the limiting pipe, the limiting column and the limiting pipe form a movable connection, and the sampling pipe vertically penetrates through the limiting column and the bottom end of the limiting pipe and is located at the center of the tee; the limiting pipe can limit the position of the limiting column.

[0014] As a preferred technical solution of the present utility model, a convex structure that is fitted with the cylindrical inner cavity at the bottom end of the limiting pipe is arranged at the bottom end of the limiting column, and the packing is located in the cavity between the sampling pipe and the limiting pipe; the packing can play a sealing role.

[0015] Compared with the prior art, the present utility model provides a natural gas metering device with a switchable meter, having the following beneficial effects:

[0016] 1. In the present utility model, through the arrangement of the solenoid valve, the solenoid valve is symmetrically installed at the front and rear ends of the tee with the center of the tee as the reference. The tee is in a "T" - shaped structure, and the branch of the tee is vertically upward. When maintenance and replacement operations need to be performed on the meter, the solenoid valves at the front and rear ends of the tee are closed, and then the lifting structure at the top of the limit post is used to drive the limit post to rotate, so that the meter together with the sampling pipe can be taken out from above the tee. In this way, during the process of replacing or maintaining the meter, the front and rear ends of the tee are not connected to the natural gas pipeline, thus avoiding the occurrence of natural gas leakage and facilitating the maintenance operation.

[0017] 2. In the present utility model, through the arrangement of the magnetic ring, the magnetic ring is fixedly installed inside the connecting pipe. The connecting pipe is installed on one side of the solenoid valves at the front and rear ends of the tee through a flange structure. After installation, the gas needs to first pass through the metal mesh inside the magnetic ring. The metal mesh is fixedly installed inside the magnetic ring, and the magnetic ring makes the metal mesh have magnetism. When the rust debris passes through the metal mesh, it will be blocked by the metal mesh and adsorbed on the surface of the metal mesh under the influence of magnetism. In this way, it can effectively prevent rust debris from entering the sampling pipe and damaging the platinum wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the installation structure of the solenoid valve of the present utility model;

[0020] Figure 3 is a schematic diagram of the installation structure of the metal mesh of the present utility model;

[0021] Figure 4 is a schematic diagram of the sectional structure of the tee of the present utility model;

[0022] Wherein: 1. Tee; 11. Solenoid valve; 12. Connecting pipe; 13. Magnetic ring; 14. Metal mesh; 15. Flow - guiding ring; 16. Limit pipe; 17. Packing; 18. Limit post; 19. Meter; 110. Sampling pipe; 111. Platinum wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the embodiments of the present utility model in detail with reference to the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0024] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Please refer to Figure 1 - Figure 4 , in this embodiment, a natural gas metering device with a switchable meter includes: a tee 1, a solenoid valve 11 is fixedly installed at the front end of the tee 1, a connecting pipe 12 is fixedly installed at the front end of the solenoid valve 11, a magnetic ring 13 is fixedly installed inside the connecting pipe 12, a metal mesh 14 is fixedly installed inside the magnetic ring 13, a diversion ring 15 is fixedly installed at the front end of the magnetic ring 13, a limit pipe 16 is fixedly installed at the upper end of the tee 1, a filler 17 is filled inside the limit pipe 16, a limit post 18 is movably installed at the upper end of the limit pipe 16, a meter 19 is inserted and installed at the upper end of the limit post 18, a sampling pipe 110 is arranged at the lower end of the meter 19, and a platinum wire 111 is fixedly installed inside the sampling pipe 110.

[0027] The tee joint 1 has a "T" - shaped structure. The branch of the tee joint 1 is vertically upward. The solenoid valves 11 are symmetrically installed before and after with the center of the tee joint 1 as the reference at the front and rear ends of the tee joint 1. The tee joint 1, the solenoid valves 11, and the connecting pipes 12 are connected through a flange structure. The outer side of the magnetic ring 13 is fixedly connected to the inner wall of the connecting pipe 12. The metal mesh 14 is made of iron. The outer side of the flow - guiding ring 15 is fixedly connected to the inner wall of the connecting pipe 12. A chamfer structure is arranged on the inner side of the front end of the flow - guiding ring 15. A hexagonal - prism - shaped protruding structure is arranged on the outer side of the top end of the limit post 18. A threaded structure is arranged on the outer side of the limit post 18. A groove that fits with the threaded structure of the limit post 18 is arranged on the inner wall of the limit pipe 16. An opening structure that fits with the sampling pipe 110 is arranged at the bottom end of the limit pipe 16. An active connection is formed between the limit post 18 and the limit pipe 16. The sampling pipe 110 vertically penetrates through the limit post 18 and the bottom end of the limit pipe 16 and is located at the center of the tee joint 1. A protruding structure that fits with the cylindrical inner cavity at the bottom end of the limit pipe 16 is arranged at the bottom end of the limit post 18. The packing 17 is located in the cavity between the sampling pipe 110 and the limit pipe 16.

[0028] Specifically, the tee joint 1 can facilitate the passage of air flow through the sampling pipe 110. The solenoid valves 11 can close the front and rear ends of the tee joint 1 when replacing the meter 19. The connecting pipes 12 can limit the position of the magnetic ring 13. The magnetic ring 13 can make the metal mesh 14 magnetic. The metal mesh 14 can intercept rust fragments. The flow - guiding ring 15 can facilitate the passage of gas through the metal mesh 14. The limit pipe 16 can limit the position of the limit post 18. The packing 17 can play a sealing role. The limit post 18 can apply pressure to the packing 17 to make the packing 17 fill the gap between the sampling pipe 110 and the limit pipe 16. The meter 19 can count the gas flow. The sampling pipe 110 can facilitate the passage of gas through the platinum wire 111. The platinum wire 111 will generate friction with the passing gas, and the resistance value of the platinum wire 111 will change under the friction of the gas.

[0029] In use, the solenoid valves 11 are symmetrically installed before and after with the center of the tee 1 as the reference at the front and rear ends of the tee 1. The tee 1 has a "T" - shaped structure, and the branch of the tee 1 is vertically upward. When maintenance and replacement operations need to be performed on the meter 19, the solenoid valves 11 at the front and rear ends of the tee 1 are closed, and then the limiting post 18 is rotated by driving the convex structure at the top of the limiting post 18, so that the meter 19 together with the sampling pipe 110 can be taken out from above the tee 1. This method can prevent the front and rear ends of the tee 1 from being connected to the natural gas pipeline during the replacement or maintenance operation of the meter 19, thus avoiding the occurrence of natural gas leakage and facilitating the maintenance operation. The magnetic ring 13 is fixedly installed inside the connecting pipe 12, and the connecting pipe 12 is installed on one side of the solenoid valves 11 at the front and rear ends of the tee 1 through a flange structure. After installation, the gas needs to pass through the metal mesh 14 inside the magnetic ring 13 first. The metal mesh 14 is fixedly installed inside the magnetic ring 13, and the magnetic ring 13 makes the metal mesh 14 magnetic. When the rust debris passes through the metal mesh 14, it will be blocked by the metal mesh 14 and adsorbed on the surface of the metal mesh 14 under the influence of the magnetic force. This method can effectively prevent the rust debris from entering the sampling pipe 110 and damaging the platinum wire 111.

[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A natural gas metering device with a switchable meter, characterized in that, Comprising: A tee joint (1), with a solenoid valve (11) fixedly installed at the front end of the tee joint (1). A connecting pipe (12) is fixedly installed at the front end of the solenoid valve (11). A magnetic ring (13) is fixedly installed inside the connecting pipe (12). A metal mesh (14) is fixedly installed inside the magnetic ring (13). A diversion ring (15) is fixedly installed at the front end of the magnetic ring (13). A limit pipe (16) is fixedly installed at the upper end of the tee joint (1). A packing (17) is filled inside the limit pipe (16). A limit post (18) is movably installed at the upper end of the limit pipe (16). A meter (19) is inserted through the limit post (18). A sampling pipe (110) is arranged at the lower end of the meter (19). A platinum wire (111) is fixedly installed inside the sampling pipe (110).

2. The natural gas metering device with a switchable meter according to claim 1, characterized in that: The tee joint (1) has a "T" - shaped structure, the branch of the tee joint (1) is vertically upward, and the solenoid valve (11) is symmetrically installed before and after with the center of the tee joint (1) as the reference at the front and rear ends of the tee joint (1).

3. The natural gas metering device with a switchable meter according to claim 1, characterized in that: The tee joint (1), the solenoid valve (11), and the connecting pipe (12) are connected through a flange structure, and the outer side of the magnetic ring (13) is fixedly connected to the inner wall of the connecting pipe (12).

4. The natural gas metering device with a switchable meter according to claim 1, characterized in that: The metal mesh (14) is made of iron. The outer side of the diversion ring (15) is fixedly connected to the inner wall of the connecting pipe (12), and a chamfer structure is arranged on the inner side of the front end of the diversion ring (15).

5. The natural gas metering device with a switchable meter according to claim 1, characterized in that: A hexagonal prism - shaped protruding structure is arranged on the outer side of the top end of the limit post (18). A threaded structure is arranged on the outer side of the limit post (18), and a groove that is fitted with the threaded structure of the limit post (18) is arranged on the inner wall of the limit pipe (16).

6. The natural gas metering device with a switchable meter according to claim 1, characterized in that: An opening structure that is fitted with the sampling pipe (110) is arranged at the bottom end of the limit pipe (16). The limit post (18) and the limit pipe (16) form a movable connection, and the sampling pipe (110) vertically penetrates through the limit post (18) and the bottom end of the limit pipe (16) and is located at the center of the tee joint (1).

7. The natural gas metering device with a switchable meter according to claim 1, characterized in that: A protruding structure that is fitted with the cylindrical inner cavity at the bottom end of the limit pipe (16) is arranged at the bottom end of the limit post (18). The packing (17) is located in the cavity between the sampling pipe (110) and the limit pipe (16).

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