A fire extinguisher pressure testing device

Abstract

A fire extinguisher pressure testing device is disclosed, applicable to the field of new fire extinguisher pressure value testing technology. Many fire extinguisher products require storage testing during factory inspection, and the pressure values ​​of each batch of extinguishers must be checked periodically. The annual leakage rate must not exceed the specified value. If any defective products are found, the batch must be traced back, and the same batch of products must be recalled. Because the pressure gauges built into fire extinguishers have low accuracy and cannot measure accurate values, an external high-precision pressure gauge is required for testing. However, the pressure gauge used in the testing process cannot be directly connected to the fire extinguisher. Therefore, a fire extinguisher pressure testing device is designed to accurately measure the pressure value of the fire extinguisher bottle, and a connection device between the fire extinguisher and the pressure gauge is provided to make fire extinguisher pressure testing quick and accurate, thus meeting the testing requirements.

Description

Technical Field

[0001] A fire extinguisher pressure testing device is applicable to the field of new fire extinguisher pressure value testing technology. Background Technology

[0002] Many fire extinguisher products require storage testing during factory inspection. The pressure values ​​of each batch of fire extinguishers must be checked regularly, and the annual leakage rate must not exceed the specified value. If any defective products are found, the entire batch must be traced and recalled. Because the pressure gauges built into fire extinguishers have low accuracy and cannot measure precise values, an external high-precision pressure gauge is required for testing. However, the pressure gauge used in the testing process cannot be directly connected to the fire extinguisher. Therefore, a fire extinguisher pressure testing device is designed to accurately measure the pressure value of the fire extinguisher bottle. Summary of the Invention

[0003] 1. Purpose of the invention: The purpose of this invention is to provide a connection device between a fire extinguisher and a pressure gauge, so as to make the pressure test of the fire extinguisher quick and accurate, so as to meet the test requirements.

[0004] 2. Technical Solution: This invention is a connection device between a fire extinguisher and a pressure gauge. The device includes a nut I (1), a washer (2), a nut II (3), a spherical connector (4), a filling nozzle (5), a sealing ring (6), a nut (7), a pin (8), a rectangular cross-section sealing ring (9), and a transition connector (10). The nut I (1) is threadedly connected to the fire extinguisher valve. The large threaded hole of the transition connector (10) is connected to the pressure gauge, and the small threaded hole is connected to the venting device. After all components are assembled, the nut (7) is turned clockwise. The nut (7) drives the pin (8) to open the valve air passage, and the gas enters the pressure gauge through this device. After the pressure gauge reading stabilizes, the pressure value is recorded. After the test is completed, the nut is slowly turned counterclockwise to close the air passage. The design concept of this device can be applied to the pressure testing of fire extinguishers with similar structures.

[0005] 3. Beneficial effects: Using this fire extinguisher pressure testing device can save tooling manufacturing costs, effectively measure pressure values, is simple to operate, and can greatly improve production efficiency. Attached Figure Description

[0006] This invention appendix Figure 1 open,

[0007] Figure 1 This is a simplified schematic diagram of a fire extinguisher pressure testing device. Detailed Implementation

[0008] A fire extinguisher pressure testing device includes a nut I (1), a washer (2), a nut II (3), a spherical joint (4), a filling nozzle (5), a sealing ring (6), a nut (7), a pin (8), a rectangular cross-section sealing ring (9), and a transition joint (10); the nut I (1) is connected to the fire extinguisher valve by a thread, the transition joint (10) has a large thread hole connected to a pressure gauge, and a small thread hole connected to a venting device;

[0009] Nut II (3) is used to connect Nut I (1) to the valve; Washer (2) is used for sealing; Nut II (3) is used to connect the filling nozzle and Nut I (1); Spherical joint (4) is used to connect the transition joint and the filling nozzle; Filling nozzle (5) is used to connect various components; Sealing ring (6) is used for sealing; Nut (7) is used to push the ejector pin; Ejector pin (8) is used to open the valve air passage; Rectangular section sealing ring (9) is used for sealing; Transition joint (10) is used to connect the pressure gauge and the venting device;

[0010] After all components are assembled, turn the nut (7) clockwise. The nut (7) will drive the pin (8) to open the valve air passage. Gas will enter the pressure gauge through this device. After the pressure gauge reading stabilizes, record the pressure value. After the test is completed, slowly turn the nut counterclockwise to close the air passage. The design concept of this device can be applied to the pressure testing of fire extinguishers with similar structures.

Claims

1. A fire extinguisher pressure testing device, characterized in that: Includes nut I (1), washer (2), nut II (3), spherical joint (4), filling nozzle (5), sealing ring (6), nut (7), pin (8), rectangular section sealing ring (9), and transition joint (10); nut I (1) is connected to the fire extinguisher valve by thread, the large thread hole of the transition joint (10) is connected to the pressure gauge, and the small thread hole is connected to the venting device; Nut II (3) is used to connect Nut I (1) to the valve; Washer (2) is used for sealing; Nut II (3) is used to connect the filling nozzle and Nut I (1); Spherical joint (4) is used to connect the transition joint and the filling nozzle; Filling nozzle (5) is used to connect various components; Sealing ring (6) is used for sealing; Nut (7) is used to push the ejector pin; Ejector pin (8) is used to open the valve air passage; Rectangular section sealing ring (9) is used for sealing; Transition joint (10) is used to connect the pressure gauge and the venting device; After all components are assembled, turn the nut (7) clockwise. The nut (7) will drive the pin (8) to open the valve air passage. Gas will enter the pressure gauge through this device. After the pressure gauge reading stabilizes, record the pressure value. After the test is completed, turn the nut counterclockwise slowly to close the air passage. The design concept of this device can be applied to the pressure testing of fire extinguishers with similar structures.

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