Automatic exhaust valve testing device

Abstract

The utility model discloses an automatic exhaust valve testing device which comprises a heating water tank, the bottom of the heating water tank is connected with a right-angle bent pipe through a flange, the right-angle bent pipe is provided with an electric node pressure gauge, the other end of the right-angle bent pipe is connected with a first check valve through a flange, and the first check valve is connected with a second check valve through a flange. The other end of the first check valve is connected with a circulating water pump through a flange matching connection pipe, a water inlet of the circulating water pump is connected with a first adjusting valve through a flange matching connection pipe, the other end of the first adjusting valve is connected with a three-way connection pipe through a flange matching connection pipe, and the top of the heating water tank is connected with a bent pipe through a flange. And the other end of the bent pipe is connected with three sight glasses and two exhaust pipes through flanges. The beneficial effects are that a fire fighting system or other fluid transmission systems can be simulated, the water temperature and the water flow are accurately controlled, the exhaust efficiency of the exhaust valve is detected, reliable work in practical application is ensured, the overall structure is compact, and functions are complete.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust valves, in particular to an automatic exhaust valve testing device. Background Art

[0002] In a fire protection system and other fluid transmission systems, the function of an automatic exhaust valve is crucial. It can effectively remove the gas in the pipeline, ensure the normal operation of the system, prevent problems such as air resistance and cavitation, especially important when the system is initially filled or gas is generated due to temperature changes.

[0003] However, during the process of implementing the technical solution of the utility model in the embodiments of the present application by the applicant, it is found that the above technology has at least the following technical problems: the performance of automatic exhaust valves on the market varies, and there is a lack of effective testing means to verify their exhaust capacity under complex working conditions. Therefore, the utility model designs an automatic exhaust valve testing device, aiming to simulate a fire protection system or other fluid transmission systems, detect the exhaust efficiency of the exhaust valve by precisely controlling the water temperature and water flow, and ensure its reliable operation in practical applications. Summary of the Utility Model

[0004] The embodiments of the present application provide an automatic exhaust valve testing device, which can simulate a fire protection system or other fluid transmission systems, detect the exhaust efficiency of the exhaust valve by precisely controlling the water temperature and water flow, ensure its reliable operation in practical applications, and has a compact overall structure and perfect functions.

[0005] The embodiments of the present application provide an automatic exhaust valve testing device, including a heating water tank. The bottom of the heating water tank is connected with a right-angle elbow through a flange. An electric contact pressure gauge is arranged on the right-angle elbow. The other end of the right-angle elbow is connected with a first check valve through a flange. The other end of the first check valve is connected with a circulating water pump through a flange and a connecting pipe. The water inlet of the circulating water pump is connected with a first regulating valve through a flange and a connecting pipe. The other end of the first regulating valve is connected with a three-way connecting pipe through a flange. The left end of the three-way connecting pipe is connected with a second check valve through a flange, and the upper end is connected with a conveying pipe through a flange. The second check valve is connected with a constant pressure water pump through a connecting pipe and a flange. The water inlet of the constant pressure water pump is connected with a second regulating valve through a connecting pipe and a flange. The second regulating valve is connected with a water tank through a pipeline. The middle part of the three-way connecting pipe is connected with a conveying pipe through a flange. An air inlet is arranged on the conveying pipe. The top of the heating water tank is connected with an elbow through a flange. A pressure relief valve is arranged on the elbow. The other end of the elbow is connected with three sight glasses and two exhaust pipes through a flange. The exhaust pipes are arranged between the sight glasses. An automatic exhaust valve is connected in the middle of the exhaust pipes. The left sight glass is connected with the conveying pipe through a flange and the elbow.

[0006] The exhaust pipe mentioned above is a several-shaped exhaust pipe and a straight exhaust pipe from right to left. The automatic exhaust valve is connected to the exhaust pipe through a flange interface. A pressure gauge and a thermometer are provided on the straight exhaust pipe, and the pressure gauge and the thermometer are located on both sides of the automatic exhaust valve.

[0007] Six heaters are evenly arranged inside the heating water tank mentioned above. The heaters are fixedly connected to the heating water tank through bolts and flanges. A temperature sensor is connected to the side of the heating water tank, and a pressure gauge and a thermometer are connected to the top.

[0008] A flow meter, an air regulating valve and a third check valve are provided on the air inlet mentioned above.

[0009] The connecting pipe, right-angle connecting pipe, elbow pipe and conveying pipe mentioned above are all made of DN50 seamless steel pipes.

[0010] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0011] It can simulate a fire protection system or other fluid transmission systems. By precisely controlling the water temperature and water flow, the exhaust efficiency of the exhaust valve can be detected to ensure its reliable operation in actual applications. The overall structure is compact and the functions are complete, and it can comprehensively simulate the working state of the exhaust valve under actual working conditions. Description of the Drawings

[0012] Figure 1 It is a structural schematic diagram of a test device for an automatic exhaust valve of the present application. Detailed Embodiments

[0013] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings in the specification and specific embodiments. Embodiment

[0014] An automatic exhaust valve 12 testing device, comprising a heating water tank 1. The bottom of the heating water tank 1 is connected by a flange to a right-angle elbow 2. An electric contact pressure gauge 201 is provided on the right-angle elbow 2. The other end of the right-angle elbow 2 is connected by a flange to a first check valve 3. The other end of the first check valve 3 is connected by a flange and a connecting pipe to a circulating water pump 4. The water inlet of the circulating water pump 4 is connected by a flange and a connecting pipe to a first regulating valve 5. The other end of the first regulating valve 5 is connected by a flange to a three-way connecting pipe 6. The left end of the three-way connecting pipe 6 is connected by a flange to a second check valve 7, and the upper end is connected by a flange to a delivery pipe 14. The second check valve 7 is connected by a connecting pipe and a flange to a constant pressure water pump 8. The water inlet of the constant pressure water pump 8 is connected by a connecting pipe and a flange to a second regulating valve 9. The second regulating valve 9 is connected by a pipe to a water tank 10. The middle of the three-way connecting pipe 6 is connected by a flange to the delivery pipe 14. An air inlet 16 is provided on the delivery pipe 14. The top of the heating water tank 1 is connected by a flange to an elbow. A pressure relief valve 13 is provided on the elbow. The other end of the elbow is connected by a flange to three sight glasses 11 and two exhaust pipes 15. The exhaust pipes 15 are arranged between the sight glasses 11. An automatic exhaust valve 12 is connected in the middle of the exhaust pipes 15. The leftmost sight glass 11 is connected by a flange and is communicated with the delivery pipe 14 through the elbow.

[0015] As the water temperature rises, gas will be generated in the pipeline and form a water-gas mixture. By monitoring the bubble changes in the sight glass 11 and the pipeline pressure fluctuations, the gas generation situation can be indirectly judged.

[0016] The exhaust pipes 15 are respectively a zigzag exhaust pipe 15 and a straight exhaust pipe 15 from right to left. The automatic exhaust valve 12 is connected to the exhaust pipe 15 through a flange interface. A pressure gauge and a thermometer are provided on the straight exhaust pipe 15, and the pressure gauge and the thermometer are located on both sides of the automatic exhaust valve 12.

[0017] Six heaters 101 are evenly arranged inside the heating water tank 1. The heaters 101 are fixedly connected to the heating water tank 1 through bolts and flanges. A temperature sensor 102 is communicated on the side of the heating water tank 1, and a pressure gauge and a thermometer are communicated on the top.

[0018] A flow meter, an air regulating valve and a third check valve are provided on the air inlet 16.

[0019] The connecting pipes, right-angle connecting pipes, elbows and delivery pipes 14 are all made of DN50 seamless steel pipes. As the pipeline material of the testing device, DN50 seamless steel pipes have excellent pressure-bearing performance, corrosion resistance and fluid transmission efficiency, and can meet the requirements of extreme conditions such as high pressure, high temperature and high flow rate during the testing process, ensuring the accuracy and reliability of the test results.

[0020] Test method: Before the test, set the target temperature of the heating system and the working parameters of the water pump according to the test requirements. Start the heating system. After the water temperature reaches the set value, start the water pump to start the water circulation. Observe the state of the water-vapor mixture in the sight glass. When it is observed that the exhaust valve starts to exhaust, record relevant parameters such as the exhaust time and the exhaust volume. Through adjusting conditions such as the water temperature and the flow rate, conduct multiple tests to obtain comprehensive performance data of the exhaust valve.

[0021] Working principle: Through the constant-pressure water pump 8 and the second regulating pump, water is sucked out from the water tank 10. The constant-pressure water pump 8 can effectively stabilize the water pressure and ensure the stability of the water flow. The water flow passes through the second check valve 7 and the first regulating valve 5, and then the circulating water pump 4 promotes the flow of the water. The water flow is transported to the heating water tank 1 through the first check valve 3. A temperature sensor 102 and a heater 101 are arranged in the heating water tank 1 to achieve precise control and real-time monitoring of the water temperature, and the target temperature can be preset. When the water temperature reaches the set value, it automatically maintains a constant value, so as to simulate the generation of gas in the pipeline under different temperature conditions. The top of the heating water tank 1 discharges the water-vapor mixture into the exhaust pipe 15 through a pipeline. Through the sight glasses 11 on both sides of the exhaust pipe 15, the state of the water-vapor mixture and the working condition of the exhaust valve can be effectively observed. The water-vapor mixture in the pipeline is transported to the three-way joint 6 through the delivery pipe 14, and gas is introduced into the delivery pipe 14 and continues to be transported for internal circulation. Each check valve can also effectively prevent the backflow of gas and liquid. Through the above method, the automatic exhaust valve 12 can be effectively tested, and the test method is simple and convenient.

[0022] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0023] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. An automatic exhaust valve testing device, comprising a heating water tank, characterized in that: The bottom of the heating water tank is connected to a right-angle elbow through a flange, an electric node pressure gauge is arranged on the right-angle elbow, the other end of the right-angle elbow is connected to a first check valve through a flange, the other end of the first check valve is connected to a circulating water pump through a flange matching pipe, the water inlet of the circulating water pump is connected to a first regulating valve through a flange matching pipe, the other end of the first regulating valve is connected to a three-way pipe with a flange, the left end of the three-way pipe is connected to a second check valve through a flange, the upper end is connected to a delivery pipe through a flange, and the second check valve is connected to Constant pressure water pump, the water inlet of the constant pressure water pump is connected to the second regulating valve through a connecting pipe fitting flange, the second regulating valve is connected to a water tank through a pipeline, the middle part of the three-way connecting pipe is connected to a delivery pipe through a fitting flange, the delivery pipe is provided with an air inlet, the top of the heating water tank is connected to a bend through a flange, the bend is provided with a pressure relief valve, the other end of the bend is connected to three sight glasses and two exhaust pipes through a flange, the exhaust pipe is arranged between the sight glasses, the middle of the exhaust pipe is connected to an automatic exhaust valve, and the sight glass on the left is connected to the delivery pipe through a flange fitting and the bend.

2. An automatic exhaust valve testing device as claimed in claim 1, characterized in that: The exhaust pipes are respectively a "X"-shaped exhaust pipe and a straight exhaust pipe from right to left. The automatic exhaust valve is connected to the exhaust pipe via a flange interface. A pressure gauge and a thermometer are provided on the straight exhaust pipe. The pressure gauge and the thermometer are located on both sides of the automatic exhaust valve.

3. An automatic exhaust valve testing device as claimed in claim 1, characterized in that: Six heaters are evenly arranged on the heating water tank. The heaters are connected and fixed to the heating water tank through bolts and flanges. The side of the heating water tank is connected to a temperature sensor, and the top is connected to a pressure gauge and a thermometer.

4. An automatic exhaust valve testing device as claimed in claim 1, characterized in that: The air inlet is provided with a flow meter, an air regulating valve and a third check valve.

5. An automatic exhaust valve testing device as claimed in claim 1, characterized in that: The connecting pipe, right-angle connecting pipe, elbow pipe and conveying pipe are all made of DN50 seamless steel pipe.

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