Anti-backflow detection device of gas meter

Abstract

The utility model discloses an anti-backflow detection device of a gas meter. The device is characterized by further comprising a precise pressure regulating valve which is detachably mounted on the bracket and is used for regulating air pressure, the U-shaped liquid column type pressure gauge is detachably installed on the support, connected with the precise pressure regulating valve through a gas pipe and used for measuring the pressure difference between two different points, and the float flowmeter is detachably installed on the support, connected with the precise pressure regulating valve through a gas pipe and used for observing whether the gas meter generates backflow or not. The precise pressure regulating valve, the U-shaped liquid column type pressure gauge and the float flowmeter are detachably mounted on the support of the production line, so that the time for transferring the gas meter from the production line to a detection station due to detection is shortened, the production and detection speed can be increased, the production efficiency is improved, and meanwhile, the detection device is simple in arrangement and low in cost. And the mounting position of the detection device can be changed at any time along with the change of stations, and a complicated detection tool does not need to be arranged, so that the cost of manufacturing a special detection tool is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas meter testing technology, specifically to a gas meter anti-backflow testing device. Background Technology

[0002] Gas meters require backflow prevention testing during production to ensure product quality and safety during use; therefore, backflow prevention testing is crucial. Existing backflow prevention testing devices are complex and inefficient. For example, patent number ZL 202123403174.7 describes a backflow prevention testing fixture for diaphragm gas meters. During testing, the backflow prevention device needs to be transferred from the production line to the testing fixture and clamped before testing. This patented technology increases the time spent on transfer and clamping, complicating operations and reducing gas meter production efficiency. Furthermore, this technology involves many components and has a more complex structure than this invention, increasing manufacturing costs. Therefore, this invention proposes a new backflow prevention testing device for gas meters. This new device not only improves testing efficiency but also simplifies the structure and reduces manufacturing costs because it eliminates the need for specific fixtures. Utility Model Content

[0003] The main purpose of this utility model is to provide a solution that can effectively address the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a backflow prevention detection device for a gas meter, comprising a bracket on a production line, characterized in that: it further comprises a precision pressure regulating valve detachably mounted on the bracket for adjusting gas pressure, a U-shaped liquid column pressure gauge detachably mounted on the bracket and connected to the precision pressure regulating valve via an air pipe for measuring the pressure difference between two different points, and a float flow meter detachably mounted on the bracket and connected to the precision pressure regulating valve via an air pipe for observing whether the gas meter generates backflow.

[0005] Preferably, it also includes a conical connector that is connected to the float flow meter via a gas pipe and is adapted to the gas meter inlet port.

[0006] Preferably, a T-connector is connected to the air pipe connecting the precision pressure regulating valve to the U-shaped liquid column pressure gauge and the float flow meter.

[0007] Preferably, the bracket is provided with several support columns for installing precision pressure regulating valves, U-shaped liquid column pressure gauges and float flow meters.

[0008] Preferably, the precision pressure regulating valve, U-shaped liquid column pressure gauge, and float flow meter are detachably mounted on the support column using cable ties.

[0009] This utility model has the following beneficial effects: by detachably installing the precision pressure regulating valve, U-shaped liquid column pressure gauge and float flow meter on the bracket of the production line, the time required to transfer the gas meter from the production line to the testing station for testing is reduced. Moreover, by setting the anti-backflow testing process as a production process, the speed of product production and testing can be accelerated, thereby improving production efficiency. At the same time, the testing device is simple to set up and the installation position of the testing device can be changed at any time as the work station changes, without the need to set up complex testing fixtures, thus reducing the cost of making special testing fixtures.

[0010] The conical connector facilitates connection to the gas meter's inlet port. The conical design allows for a tighter connection and better sealing when the connector is forcefully inserted into the gas meter's inlet port, with greater insertion force. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a partially enlarged schematic diagram of the present invention.

[0013] Legend: 1. Bracket; 11. Support column; 2. Precision pressure regulating valve; 3. U-shaped liquid column pressure gauge; 4. Float flow meter; 5. Conical connector. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] like Figure 1-2 As shown, a backflow prevention detection device for a gas meter includes a bracket 1 on a production line. Its features include: a precision pressure regulating valve 2 detachably mounted on the bracket 1 for adjusting gas pressure; a U-shaped liquid column pressure gauge 3 detachably mounted on the bracket 1 and connected to the precision pressure regulating valve 2 via a gas pipe for measuring the pressure difference between two different points; and a float flow meter 4 detachably mounted on the bracket 1 and connected to the precision pressure regulating valve 2 via a gas pipe for observing whether the gas meter is experiencing backflow. By detachably mounting the precision pressure regulating valve 2, the U-shaped liquid column pressure gauge 3, and the float flow meter 4 on the bracket 1 on the production line, the time required to transfer the gas meter from the production line to the testing station for testing is reduced. Furthermore, by making the backflow prevention detection process a single step in production, the speed of product production and testing can be accelerated, thereby improving production efficiency. Simultaneously, the detection device is simple to set up, and its installation position can be changed at any time as the work station changes, eliminating the need for complex testing fixtures and reducing the cost of manufacturing dedicated testing fixtures.

[0016] In one embodiment, a conical connector 5 is also included, which is connected to the float flow meter 4 via a gas pipe and is adapted to the gas meter inlet port. The conical connector 5 facilitates connection to the gas meter inlet port. The conical design allows for a tighter connection and better sealing when the conical connector 5 is forcefully inserted into the gas meter inlet port, as the insertion force is greater.

[0017] In one embodiment, a T-connector is connected to the air pipe connecting the precision pressure regulating valve 2 to the U-shaped liquid column pressure gauge 3 and the float flow meter 4.

[0018] In one embodiment, the bracket 1 is provided with several support columns 11 for installing a precision pressure regulating valve 2, a U-shaped liquid column pressure gauge 3 and a float flow meter 4; the precision pressure regulating valve 2, the U-shaped liquid column pressure gauge 3 and the float flow meter 4 are detachably installed on the support columns 11 by cable ties.

[0019] In the detection process of this utility model, the other end of the precision pressure regulating valve 2 is first connected to the gas source. The gas pressure is reduced to the set pressure through the precision pressure regulating valve 2. The other end is connected to the U-shaped liquid column pressure gauge 3 and the float meter 4 through a tee and fittings. The other end of the float meter 4 is connected to a conical connector 5, which is inserted into the gas meter. The gas source enters the float meter 4 after passing through the precision pressure regulating valve 2, and then enters the gas meter through the conical connector. The U-shaped liquid column pressure gauge displays whether the gas pressure after the precision pressure regulating valve 2 is the set pressure value. The float meter 4 is used to observe whether there is a backflow phenomenon in the gas meter. If there is a backflow phenomenon in the gas meter, the float in the float meter 4 will fall back. If there is no backflow, the height of the float in the float meter 4 will not change.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A backflow prevention detection device for a gas meter, comprising a bracket (1) on a production line, characterized in that: It also includes a precision pressure regulating valve (2) that can be detachably mounted on the bracket (1) for adjusting the gas pressure, a U-shaped liquid column pressure gauge (3) that can be detachably mounted on the bracket (1) and connected to the precision pressure regulating valve (2) through a gas pipe for measuring the pressure difference between two different points, and a float flow meter (4) that can be detachably mounted on the bracket (1) and connected to the precision pressure regulating valve (2) through a gas pipe for observing whether the gas meter generates backflow.

2. The backflow prevention detection device for a gas meter according to claim 1, characterized in that: It also includes a conical connector (5) that is connected to the float flow meter (4) via a gas pipe and is adapted to the gas meter inlet port.

3. The backflow prevention detection device for a gas meter according to claim 1, characterized in that: The precision pressure regulating valve (2) is connected to the air pipe of the U-shaped liquid column pressure gauge (3) and the float flow meter (4) with a three-way connector.

4. The backflow prevention detection device for a gas meter according to claim 3, characterized in that: The bracket (1) is provided with several support columns (11) for installing precision pressure regulating valve (2), U-shaped liquid column pressure gauge (3) and float flow meter (4).

5. The backflow prevention detection device for a gas meter according to claim 4, characterized in that: The precision pressure regulating valve (2), U-shaped liquid column pressure gauge (3) and float flow meter (4) are detachably mounted on the support column (11) by cable ties.

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