Straight-through type ultrasonic gas meter with gas outlet valve

Abstract

The utility model relates to a straight-through type ultrasonic gas meter with a gas outlet valve. The straight-through type ultrasonic gas meter comprises a gas meter steel shell, a gas inlet pipe, a gas outlet pipe and a front steel cover. The front steel cover is assembled on the gas meter steel shell, and the front steel cover and the gas meter steel shell jointly define a containing cavity. The gas inlet pipe and the gas outlet pipe are located at the two ends of the gas meter steel shell respectively, and the gas inlet pipe and the gas outlet pipe are opposite in direction. The air inlet pipe and the air outlet pipe are communicated with the accommodating cavity; the ultrasonic sensor is simple in structure, gas enters the containing cavity of the gas meter from the gas inlet pipe through the arrangement of the flow guide plate assembly with the temperature and pressure, and after being guided by the flow guide plate assembly with the temperature and pressure, airflow flows to the bottom of the gas meter base meter and then returns to enter a flow channel gas inlet of the ultrasonic metering module. And a plurality of exhaust holes are formed, so that the entering gas can be dispersed, the gas flow field structure is optimized, and the metering precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic gas meters, in particular to a straight-through ultrasonic gas meter with an air outlet valve. Background Art

[0002] The mainstream gas meters currently on the domestic market are designed and developed in accordance with the "GB / T6968-2019 National Standard for Diaphragm Gas Meters," featuring side-by-side meter connectors. However, some overseas countries use straight-through meter structures, with the inlet and outlet aligned on the same pipe axis. Domestic manufacturers produce a limited number of straight-through gas meters, all without valves. Gas meter valves, however, play a practical role in ensuring safe gas use and gas company management of users, serving as powerful components for optimizing gas meter functionality and strengthening safety controls. This utility model patent redesigns the current market for valveless straight-through gas meters.

[0003] In view of the above problems, it is necessary to improve them. Utility Model Content

[0004] The purpose of the utility model is to provide a straight-through ultrasonic gas meter with an outlet valve, which has a simple structure, an ingenious design, reduces parts assembly, and improves integration.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model patent is: a straight-through ultrasonic gas meter with an outlet valve, comprising a gas meter steel shell, an air inlet pipe, an air outlet pipe and a front steel cover; the front steel cover is assembled on the gas meter steel shell, and the front steel cover and the gas meter steel shell together form a accommodating cavity; the air inlet pipe and the air outlet pipe are respectively located at the two ends of the gas meter steel shell, and the air inlet pipe and the air outlet pipe are in opposite directions; the air inlet pipe and the air outlet pipe are connected to the accommodating cavity; a temperature and pressure guide plate assembly, an ultrasonic metering module and a valve are assembled in the accommodating cavity; wherein the temperature and pressure guide plate assembly is connected to the air inlet pipe; one end of the valve is connected to the ultrasonic metering module, and the other end is connected to the air outlet pipe, and the valve is used to control the on and off of the gas flow path in the gas meter.

[0006] As a preferred solution of the present invention, the axis of the air inlet pipe and the axis of the air outlet pipe are both located on the center line of the steel shell of the gas meter.

[0007] As a preferred solution of the present invention, the temperature and pressure guide plate assembly includes a positioning plate, a positioning cylinder is fixed on the positioning plate, a mounting portion connected to the air intake pipe is arranged on the positioning cylinder, a mounting groove is formed on the outside of the mounting portion, and a sealing ring is sleeved on the mounting groove; a plurality of air diffusion holes are formed on the circumference of the positioning cylinder.

[0008] As a preferred solution of the present invention, a symmetrically arranged clamping plate and a locking plate are arranged on the outer side of the top of the positioning cylinder near the mounting portion; a clamping groove is formed on the clamping plate, and a locking hole is formed on the locking plate; a connecting portion is formed at the end of the air intake pipe, and the connecting portion is located in the accommodating cavity.

[0009] As a preferred solution of the present invention, the connecting part includes a connecting tube, a connecting plate is fixedly provided at the bottom of the connecting tube, a connecting convex plate and a connecting locking plate are formed on the connecting plate, and a connecting hole is formed on the connecting locking plate; the mounting part extends into the connecting tube, and the positioning plate is rotated so that the connecting convex plate is assembled into the clamping groove, the locking plate corresponds to the connecting locking plate, and the locking screw passes through the connecting hole and the locking hole, and is used to assemble the temperature-pressure guide plate assembly at the intake pipe.

[0010] As a preferred solution of the present invention, the bottom of the positioning plate is equipped with an integrated temperature and pressure sensor, and a distance is left between the integrated temperature and pressure sensor and the ultrasonic metering module.

[0011] As a preferred solution of the present invention, the ultrasonic metering module is inserted into the valve and fastened by a clamp.

[0012] As a preferred solution of the present invention, an air outlet connecting pipe is formed at the end of the air outlet pipe, the air outlet connecting pipe is located in the accommodating cavity, and the air outlet connecting pipe is sealed and connected to the valve.

[0013] As a preferred solution of the present invention, the ultrasonic metering module is connected to a metering terminal assembly; the valve is connected to a valve terminal assembly; a reserved hole is formed on the front steel cover, and the metering terminal assembly and the valve terminal assembly respectively pass through the reserved holes and are locked by terminal nuts.

[0014] As a preferred solution of the present invention, the gas meter steel shell and the front steel cover are connected via a sealing ring.

[0015] The beneficial effects of the utility model are:

[0016] 1. The ultrasonic sensor provided in the present invention has a simple structure. By providing a temperature-pressure guide plate assembly, the gas enters the accommodating cavity of the gas meter from the air inlet pipe. After being guided by the temperature-pressure guide plate assembly, the airflow flows to the bottom position of the gas meter base and then returns to the flow channel air inlet of the ultrasonic metering module. In addition, the multiple air diffusion holes provided can disperse the incoming gas, optimize the airflow field structure, and improve the metering accuracy.

[0017] 2. The ultrasonic sensor provided in the utility model is cleverly designed. The valve is assembled at the outlet pipe of the gas meter, with one end connected to the outlet pipe and the other end connected to the ultrasonic metering module. At the same time, the connecting wires of the temperature and pressure sensors are integrated into the valve, which reduces the number of assembled parts, improves integration, and improves space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an ultrasonic flowmeter according to an embodiment of the present utility model;

[0019] Figure 2 This is an exploded view of an ultrasonic flowmeter according to an embodiment of the present utility model;

[0020] Figure 3 This is a structural diagram of the ultrasonic flowmeter after removing the front steel cover in an embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the connection between the temperature and pressure guide plate assembly and the air intake pipe according to an embodiment of the utility model;

[0022] Figure 5 This is a structural diagram of a temperature and pressure guide plate assembly according to an embodiment of the present invention;

[0023] Figure 6 This is a structural diagram of the connecting portion of an embodiment of the utility model;

[0024] Explanation of the accompanying drawings: gas meter steel shell 1, with temperature and pressure guide plate assembly 2, integrated temperature and pressure sensor 2-a, ultrasonic metering module 3, metering terminal assembly 3-a, front steel cover 4, sealing ring 5, terminal nut 6, valve 7, valve terminal assembly 7-a, locking screw 8, clamp 9, air inlet pipe 10, air outlet pipe 11, connecting part 12, connecting cylinder 12-1, connecting plate 12-2, connecting convex plate 12-3, connecting locking plate 12-4, connecting hole 12-5, air outlet connecting pipe 13, positioning plate 20, positioning cylinder 21, mounting part 22, mounting groove 23, snap-in plate 24, locking plate 25, snap-in groove 26, locking hole 27, air diffusion hole 28, sealing ring 29, accommodating chamber 30. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] Example:

[0028] like Figure 1-3 As shown, Figure 1 This is a schematic structural diagram of an ultrasonic flowmeter according to an embodiment of the present utility model; Figure 2 This is an exploded view of an ultrasonic flowmeter according to an embodiment of the present utility model; Figure 3 This is a structural diagram of the ultrasonic flowmeter after removing the front steel cover in an embodiment of the utility model;

[0029] Specifically, a straight-through ultrasonic gas meter with an outlet valve includes a gas meter steel housing 1, an inlet pipe 10, an outlet pipe 11, and a front steel cover 4. The front steel cover 4 is assembled on the gas meter steel housing 1, and the front steel cover 4 and the gas meter steel housing 1 together form a receiving cavity 30. It should be noted that due to the special function of the gas meter to measure gas, the gas meter steel housing 1 of the gas meter should be a sealed structure to prevent gas leakage and ensure the accuracy of gas meter measurement. In other words, the gas meter steel housing 1 and the front steel cover 4 should be sealed to ensure the sealing of the gas meter steel housing 1.

[0030] The air inlet pipe 10 and the air outlet pipe 11 are respectively located at the two ends of the gas meter steel shell 1, and the directions of the air inlet pipe 10 and the air outlet pipe 11 are opposite; in this way, the air inlet direction of the gas meter and the air outlet direction of the gas meter can be kept consistent, the flow of gas in the gas meter is smoother, and it is also convenient to measure the flow of the gas meter.

[0031] The ports of the air inlet pipe 10 and the air outlet pipe 11 are both exposed to the outside, and the air inlet pipe 10 and the air outlet pipe 11 are connected to the accommodating chamber 30; the air inlet pipe 10 and the air outlet pipe 11 are used to supply gas to flow through the accommodating chamber 30, and then, the gas is measured through the relevant functional components arranged in the accommodating chamber 30.

[0032] By arranging the inlet pipe 10 and the outlet pipe 11 horizontally, the inlet pipe 10 and the outlet pipe 11 align with the horizontal extension direction of the natural gas pipeline after entering the house. The inlet pipe 10 and the outlet pipe 11 can be directly connected to the natural gas pipeline without the need for additional adapter elbows (or even straight pipes). This can improve the installation efficiency of the gas meter and reduce the installation cost of the gas meter.

[0033] The accommodating cavity 30 is equipped with a temperature-pressure guide plate assembly 2, an ultrasonic metering module 3 and a valve 7; wherein, the temperature-pressure guide plate assembly 2 is connected to the air inlet pipe 10; one end of the valve 7 is connected to the ultrasonic metering module 3, and the other end is connected to the air outlet pipe 11, and the valve 7 is used to control the on-off of the gas flow path in the gas meter.

[0034] During operation, the gas in the natural gas pipeline enters the gas meter's accommodating chamber 30 from the inlet pipe 10. After being guided by the temperature-pressure guide plate assembly 2, the gas flows to the bottom of the gas meter base and then returns to the flow channel inlet of the ultrasonic metering module 3. The ultrasonic metering module 3 measures the gas flow rate. After flowing out of the outlet of the ultrasonic metering module 3, the gas enters the outlet pipe 11 and enters the outlet end of the natural gas pipeline from the outlet pipe 11. Among them, the valve 7 is used to control the on-off of the gas flow path in the gas meter. Among them, the valve 7 is set corresponding to the outlet pipe 11. The on-off of the outlet pipe 11 is controlled by the valve 7, which controls the on-off of the gas flow path in the gas meter.

[0035] The axis of the air inlet pipe 10 and the axis of the air outlet pipe 11 are both located on the center line of the gas meter steel shell 1; with this arrangement, the gas meter steel shell 1 has good symmetry and more balanced force, and the structural strength of the gas meter steel shell 1 is better, which can improve the overall structural strength and reliability of the gas meter steel shell 1, and also help to improve the appearance of the gas meter, and make the overall space occupied by the gas meter smaller, which is conducive to saving the installation space of the gas meter.

[0036] The ultrasonic metering module 3 is inserted into the valve 7 and fastened by the clamp 9; specifically, the ultrasonic metering module 3 and the valve 7 are compressed and sealed by a sealing ring, and the clamp 9 is fixed and limited; the ultrasonic metering module 3, the valve 7 and the clamp 9 assembly are compressed and sealed with the air outlet connecting pipe 13 by a sealing ring, and are locked by screws and the air outlet thread structure.

[0037] like Figure 4-5 As shown, Figure 4 This is a schematic diagram of the connection between the temperature and pressure guide plate assembly and the air intake pipe according to an embodiment of the utility model; Figure 5 This is a schematic structural diagram of a temperature and pressure guide plate assembly according to an embodiment of the present invention.

[0038] The temperature and pressure guide plate assembly 2 includes a positioning plate 20, on which a positioning cylinder 21 is fixed, and a mounting portion 22 connected to the air inlet pipe 10 is arranged on the positioning cylinder 21, and a mounting groove 23 is formed on the outer side of the mounting portion 22, and a sealing ring 29 is sleeved on the mounting groove 23; a plurality of air diffusion holes 28 are formed in the circumference of the positioning cylinder 21; the temperature and pressure guide plate assembly 2 is arranged so that the gas enters the accommodating cavity 30 of the gas meter from the air inlet pipe 10, and after being guided by the temperature and pressure guide plate assembly 2, the air flow flows to the bottom position of the base meter of the gas meter and then returns to the flow channel air inlet of the ultrasonic metering module 3, and the plurality of air diffusion holes 28 can disperse the incoming gas, optimize the air flow field structure, and improve the metering accuracy.

[0039] In addition, an integrated temperature and pressure sensor 2-a is installed at the bottom of the positioning plate 20, and a distance is left between the integrated temperature and pressure sensor 2-a and the ultrasonic metering module 3; the integrated temperature and pressure sensor 2-a is fixed to the back of the positioning plate 20 to prevent the gas from directly impacting the ultrasonic metering module 3, thereby ensuring safety in use, improving metering accuracy, and optimizing the airflow field structure.

[0040] A symmetrically arranged snap-in plate 24 and a locking plate 25 are arranged on the outer side of the top of the positioning cylinder 21 near the mounting portion 22; a snap-in groove 26 is formed on the snap-in plate 24, and a locking hole 27 is formed on the locking plate 25; a connecting portion 12 is formed at the end of the air intake pipe 10, and the connecting portion 12 is located in the accommodating cavity 30.

[0041] like Figure 6 As shown, Figure 6 It is a structural schematic diagram of the connecting part of an embodiment of the present utility model; the connecting part 12 includes a connecting tube 12-1, a connecting plate 12-2 is fixedly provided at the bottom of the connecting tube 12-1, a connecting protrusion 12-3 and a connecting locking plate 12-4 are formed on the connecting plate 12-2, and a connecting hole 12-5 is formed on the connecting locking plate 12-4; the mounting part 22 extends into the connecting tube 12-1, and the positioning plate 20 is rotated so that the connecting protrusion 12-3 is assembled into the clamping groove 26, the locking plate 25 corresponds to the connecting locking plate 12-4, and the locking screw 8 passes through the connecting hole 12-5 and the locking hole 27, which is used to assemble the temperature-pressure guide plate assembly 2 at the intake pipe 10.

[0042] An outlet connection pipe 13 is formed at the end of outlet pipe 11. This connection pipe 13 is located within accommodating chamber 30 and is sealed to valve 7. The structure of connection pipe 13 is consistent with that of connection portion 12. Valve 7 is assembled at the gas meter outlet pipe 11, with one end connected to outlet pipe 11 and the other to ultrasonic metering module 3. It also interacts with metering terminal assembly 3-a and valve terminal assembly 7-a, reducing component count and improving integration.

[0043] The ultrasonic metering module 3 is connected to a metering terminal assembly 3-a; the valve 7 is connected to a valve terminal assembly 7-a; a reserved hole 40 is formed on the front steel cover 4, and the metering terminal assembly 3-a and the valve terminal assembly 7-a pass through the reserved holes 40 respectively and are locked by the terminal nut 6; there are sealing rings on the metering terminal assembly 3-a and the valve terminal assembly 7-a, which pass through the reserved holes 40 of the front steel cover 4, are locked respectively with the terminal nuts 6, and are compressed and sealed by the sealing rings.

[0044] Taking the gas meter steel shell 1 and the front steel cover 4 as an example, both of which are made of metal materials, the gas meter steel shell 1 and the front steel cover 4 are connected by fasteners such as bolts and screws, and a sealing ring such as a silicone ring or a rubber ring is arranged between the gas meter steel shell 1 and the front steel cover 4; finally, in this embodiment, the gas meter steel shell 1 and the front steel cover 4 are connected by a sealing ring 5.

[0045] The above description of the disclosed embodiments will enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

[0046] Although this document uses the following terms in the figures more frequently: gas meter steel shell 1, temperature and pressure guide plate assembly 2, integrated temperature and pressure sensor 2-a, ultrasonic metering module 3, metering terminal assembly 3-a, front steel cover 4, sealing ring 5, terminal nut 6, valve 7, valve terminal assembly 7-a, locking screw 8, clamp 9, inlet pipe 10, outlet pipe 11, connecting portion 12, connecting cylinder 12-1, connecting plate 12-2, connecting protruding plate 12-3, connecting locking plate 12-4, connecting hole 12-5, outlet connecting pipe 13, positioning plate 20, positioning cylinder 21, mounting portion 22, mounting groove 23, clamping plate 24, locking plate 25, clamping groove 26, locking hole 27, air diffusion hole 28, sealing ring 29, accommodating chamber 30, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A straight-through ultrasonic gas meter with an outlet valve, characterized by: The invention comprises a gas meter steel shell (1), an air inlet pipe (10), an air outlet pipe (11) and a front steel cover (4); the front steel cover (4) is assembled on the gas meter steel shell (1), and the front steel cover (4) and the gas meter steel shell (1) together form a receiving chamber (30); the air inlet pipe (10) and the air outlet pipe (11) are respectively located at two ends of the gas meter steel shell (1), and the air inlet pipe (10) and the air outlet pipe (11) are oriented in opposite directions; the air inlet pipe (10) and the air outlet pipe (11) are connected to the receiving chamber (30); a temperature-pressure guide plate assembly (2), an ultrasonic metering module (3) and a valve (7) are assembled in the receiving chamber (30); wherein the temperature-pressure guide plate assembly (2) is connected to the air inlet pipe (10); one end of the valve (7) is connected to the ultrasonic metering module (3), and the other end is connected to the air outlet pipe (11), and the valve (7) is used to control the on-off of the gas flow path in the gas meter.

2. A straight-through ultrasonic gas meter with an outlet valve according to claim 1, characterized in that: The axis of the air inlet pipe (10) and the axis of the air outlet pipe (11) are both located on the center line of the gas meter steel shell (1).

3. The straight-through ultrasonic gas meter with an outlet valve according to claim 1, characterized in that: The temperature-pressure guide plate assembly (2) comprises a positioning plate (20), a positioning cylinder (21) is fixedly provided on the positioning plate (20), a mounting portion (22) connected to the air intake pipe (10) is arranged on the positioning cylinder (21), a mounting groove (23) is formed on the outer side of the mounting portion (22), and a sealing ring (29) is sleeved on the mounting groove (23); a plurality of air diffusion holes (28) are formed in the circumference of the positioning cylinder (21).

4. The straight-through ultrasonic gas meter with an outlet valve according to claim 3, characterized in that: A symmetrically arranged snap-in plate (24) and a locking plate (25) are arranged on the outer side of the top of the positioning cylinder (21) near the mounting portion (22); a snap-in groove (26) is formed on the snap-in plate (24), and a locking hole (27) is formed on the locking plate (25); a connecting portion (12) is formed at the end of the air inlet pipe (10), and the connecting portion (12) is located in the accommodating cavity (30).

5. The straight-through ultrasonic gas meter with an outlet valve according to claim 4, characterized in that: The connecting portion (12) includes a connecting tube (12-1), a connecting plate (12-2) is fixedly provided at the bottom of the connecting tube (12-1), a connecting convex plate (12-3) and a connecting locking plate (12-4) are formed on the connecting plate (12-2), and a connecting hole (12-5) is formed on the connecting locking plate (12-4); the mounting portion (22) extends into the connecting tube (12-1), and the positioning plate (20) is rotated so that the connecting convex plate (12-3) is assembled into the clamping groove (26), the locking plate (25) corresponds to the connecting locking plate (12-4), and the locking screw (8) passes through the connecting hole (12-5) and the locking hole (27) to assemble the temperature-pressure guide plate assembly (2) at the intake pipe (10).

6. The straight-through ultrasonic gas meter with an outlet valve according to claim 3, characterized in that: An integrated temperature and pressure sensor (2-a) is assembled at the bottom of the positioning plate (20), and a distance is left between the integrated temperature and pressure sensor (2-a) and the ultrasonic metering module (3).

7. The straight-through ultrasonic gas meter with an outlet valve according to claim 1, characterized in that: The ultrasonic metering module (3) is inserted into the valve (7) and fastened by a clamp (9).

8. The straight-through ultrasonic gas meter with an outlet valve according to claim 1, characterized in that: An air outlet connecting pipe (13) is formed at the end of the air outlet pipe (11), the air outlet connecting pipe (13) is located in the accommodating cavity (30), and the air outlet connecting pipe (13) is sealedly connected to the valve (7).

9. The straight-through ultrasonic gas meter with an outlet valve according to claim 1, characterized in that: The ultrasonic metering module (3) is connected to a metering terminal assembly (3-a); the valve (7) is connected to a valve terminal assembly (7-a); a reserved hole (40) is formed on the front steel cover (4), and the metering terminal assembly (3-a) and the valve terminal assembly (7-a) respectively pass through the reserved holes (40) and are locked by terminal nuts (6).

10. The straight-through ultrasonic gas meter with an outlet valve according to claim 1, characterized in that: The gas meter steel shell (1) and the front steel cover (4) are connected via a sealing ring (5).

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