Test system for testing performance of water hammer eliminating box

Abstract

The utility model relates to a test system for testing the performance of a water hammer eliminating box. The test system comprises a low-level water tank which is provided with a first water level control module to keep the water level in the low-level water tank at a corresponding preset water level; the high-level water tank is provided with a second water level control module, so that the water level in the high-level water tank is kept at a corresponding preset water level; the first end of the first water supply pipeline is communicated with the low-level water tank, a water pump and an electric butterfly valve are arranged on the pipeline, the water pump is connected with a water hammer eliminating tank through a connecting pipe, and a ball valve is arranged on the connecting pipe; the water supply pipeline group is provided with multiple sections of second water supply pipelines, first ends of the second water supply pipelines are communicated with the first water supply pipeline, second ends of the second water supply pipelines are communicated with the high-level water tank, and electric butterfly valves are mounted on the second water supply pipelines; the operation data acquisition module is used for acquiring operation data of the water supply pipeline and the water hammer elimination box; and the control center is in circuit connection with the electric butterfly valve, the ball valve and the water pump and is in communication connection with the operation data acquisition module.

Description

Technical Field

[0001] The utility model relates to a water hammer elimination box performance test system, which is applicable to the field of water supply and drainage engineering. Background Art

[0002] The water supply and drainage project has long lines and complex layouts, slow accident response speed, and difficult daily inspection and maintenance. Actions such as opening and closing valves and starting and stopping water pumps will cause water hammer, leading to pipe bursts, valve damage, water pump ruptures and other accidents, resulting in water supply interruptions, which will have a huge impact on the entire water supply system, cause economic losses, and will have serious consequences.

[0003] In order to ensure pipeline safety, water supply and drainage pipelines generally adopt multiple water hammer protection facilities to avoid water hammer damage during the operation of the project. Water hammer protection equipment mainly includes one-way towers, air tanks, safety valves, etc. For the research and development of new water hammer protection equipment and water hammer elimination boxes, in order to ensure the safety and reliability of water hammer protection equipment in engineering applications, it is necessary to carry out model tests, realize the automated control of the test system process, simplify the process, one-button control components, automatically read data, draw graphics, and save results, so as to provide technical theoretical support for engineering design applications. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the above existing problems, a water hammer elimination box performance test system is provided.

[0005] The technical solution adopted by the utility model is: a water hammer elimination box performance test system, characterized in that it includes:

[0006] The low-level water tank is equipped with a first water level control module, which can keep the water level in the low-level water tank at a corresponding preset water level;

[0007] The high-level water tank is equipped with a second water level control module, which can keep the water level in the high-level water tank at a corresponding preset water level;

[0008] A first water supply pipeline, a first end of which is connected to the low-level water tank, a water pump and an electric butterfly valve are provided on the pipeline, and a water hammer elimination box is connected to the pipeline on the side of the water pump away from the low-level water tank through a connecting pipe, and a ball valve is provided on the connecting pipe;

[0009] A water supply pipeline group, comprising a plurality of second water supply pipelines of different lengths, wherein the first ends of the second water supply pipelines are connected to the second ends of the first water supply pipelines, and the second ends of the second water supply pipelines are connected to the high-level water tank, and an electric butterfly valve is installed on each second water supply pipeline;

[0010] Operation data acquisition module, used to collect operation data of water supply pipeline and water hammer elimination box;

[0011] The control center is connected to the electric butterfly valve, ball valve, and water pump circuits, and is used to control the opening of the electric butterfly valves on each pipeline, the opening of the connecting pipe ball valve, and the start and stop of the water pump. It is communicated with the operation data acquisition module to obtain and display the operation data collected by the operation data acquisition module.

[0012] The first water level control module comprises:

[0013] Reservoirs;

[0014] A low-level water supply pipe, on which a low-level water supply pump is provided, a first end of the water supply pipe is connected to the water reservoir, and a second end of the water supply pipe is connected to the low-level water tank;

[0015] A low-level overflow pipe, wherein the first end of the overflow pipe is connected to the water reservoir, and the second end of the overflow pipe is connected to the low-level water tank and corresponds to a preset water level of the low-level water tank.

[0016] The second water level control module comprises:

[0017] Reservoirs;

[0018] A high-level water supply pipe, on which a high-level water supply pump is provided, the first end of the water supply pipe is connected to the water reservoir, and the second end of the water supply pipe is connected to the high-level water tank;

[0019] A high-level overflow pipe, the first end of which is connected to the water reservoir, and the second end of which is connected to the high-level water tank via multiple overflow branches and corresponds one-to-one with multiple preset water levels of the high-level water tank, and an electric butterfly valve is provided on the overflow branch.

[0020] The operation data acquisition module comprises:

[0021] A pipeline data acquisition module, comprising a plurality of flow sensors and pressure signal sensors arranged on the first water supply pipeline;

[0022] The water hammer box data acquisition module comprises a liquid level sensor and a temperature sensor arranged in the water hammer elimination box, and a pressure sensor and a gas sensor arranged at the bottom of the water hammer elimination box.

[0023] A test method for testing the water hammer elimination box performance test system, characterized in that:

[0024] According to the water level of the low-level water tank required for the test, the water level in the low-level water tank is controlled to be maintained at the corresponding water level through the first water level control module;

[0025] According to the water level of the high-level water tank required for the test, the water level in the high-level water tank is controlled to be maintained at the corresponding water level through the second water level control module;

[0026] According to the pipeline length required for the test, the electric butterfly valve on the second water supply pipeline is switched on and off to make the second water supply pipeline of the corresponding length conductive;

[0027] According to the access status of the water hammer elimination box required for the test, the switch of the ball valve on the connecting pipe is controlled; the water pump and the electric butterfly valve on the first water supply pipeline are turned on to fill water into the water hammer elimination box. After the water hammer elimination box is filled with water, when the data collected by the running data acquisition module shows that the flow in the water supply pipeline is stable, the water pump and the electric butterfly valve are turned off at the same time.

[0028] The beneficial effects of the utility model are as follows: in the utility model, the first and second water level control modules can be used to control the low-level water tank and the high-level water tank to be maintained at preset water level values ​​respectively, the length of the water supply pipeline can be changed through the water supply pipeline group, and the water hammer elimination box and the water supply pipeline can be controlled to be connected or disconnected through the ball valve, so that the water hammer elimination box performance test under various operating conditions can be carried out, and the operating data under various operating conditions can be obtained.

[0029] The utility model allows the water levels in the low-level water tank and the high-level water tank to be dynamically maintained at preset water level values ​​through the water supply pipe and the overflow pipe.

[0030] The measuring instruments in the utility model are all equipped with data acquisition devices and remote communication devices. Through the control center, valve switches, water pump start and stop can be controlled by one button, data acquisition work can be carried out, remote control of instruments and equipment can be realized, data can be automatically saved, the test operation is simple, and controllability is strong.

[0031] The utility model has a water hammer elimination box with multiple built-in sensors connected to an external display screen, which can monitor and record the water level change, pressure change, temperature change, air valve status and intake and exhaust volume of the water hammer elimination box in real time, and observe the working status of the water hammer elimination box. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of a water hammer elimination box performance test system described in an embodiment.

[0033] Figure 2 It is a schematic diagram of the high-level water tank described in the embodiment.

[0034] Figure 3 This is the pressure process line of the measuring point 200m after the protective test valve in the embodiment.

[0035] Figure 4 This is the pressure process line of the measuring point after the unprotected test valve 200m in the embodiment.

[0036] Figure 5 This is the pressure process line of the measuring point 30m after the protective test valve in the embodiment.

[0037] Figure 6This is the pressure process line of the measuring point after the 30m unprotected test valve in the embodiment.

[0038] 1. Water reservoir; 2. Low-level water tank; 3. Low-level water supply pipe; 4. Low-level water supply pump; 5. Low-level overflow pipe; 6. High-level water tank; 7. High-level water supply pipe; 8. High-level water supply pump; 9. High-level overflow pipe; 10. First water supply pipeline; 11. Second water supply pipeline; 12. Water pump; 13. Water hammer elimination box; 14. Connecting pipe; 15. Overflow branch pipe. DETAILED DESCRIPTION

[0039] The present embodiment is a water hammer elimination box performance test system, comprising: a low-level water tank, a high-level water tank, a first water supply pipeline, a water supply pipeline group, an operation data acquisition module and a control center, etc.

[0040] In this example, the low-level water tank is equipped with a first water level control module, which includes a water reservoir, a low-level water supply pipe, and a low-level overflow pipe, etc. The low-level water tank is connected to a low-level water supply pump through a low-level water supply pipe, and water is pumped from the water reservoir to the low-level water tank through the water supply pump. When the water level is higher than the set value, the low-level water tank flows into the water reservoir through the low-level overflow pipe, so that the water level in the low-level water tank is maintained at the corresponding preset water level.

[0041] In this embodiment, the high-level water tank is equipped with a second water level control module, which includes a high-level water supply pipe and a high-level overflow pipe, etc. The high-level water tank is connected to the high-level water supply pump through the high-level water supply pipe, and the water supply pump draws water from the reservoir to replenish the high-level water tank. Only the electric butterfly valve of the corresponding water level overflow branch pipeline is opened. When the water level is higher than the set value, the high-level water tank 2 flows into the reservoir through the corresponding high-level overflow branch pipeline, so that the water level in the high-level water tank is maintained at the corresponding preset water level.

[0042] In this example, the first end of the high-level overflow pipe is connected to the water storage tank, and the second end of the overflow pipe is connected to the 8 overflow holes on the high-level water tank through 8 overflow branches. The elevations of the 8 overflow holes on the high-level water tank are 4m, 4.5m, 5m, 5.5m, 6m, 6.5m, 7m and 7.5m respectively. Except for the overflow branch corresponding to 7.5m, the other overflow branches are equipped with electric butterfly valves. The test water level of the high-level water tank is controlled by the switch action of the butterfly valve. 7.5m is a forced overflow pipeline to prevent the high-level water tank from overflowing.

[0043] In this embodiment, the first end of the first water supply pipeline is connected to the low-level water tank, and the second end of the first water supply pipeline is connected to the high-level water tank via the water supply pipeline group. A pressure signal sensor, a water pump, a pressure signal sensor, an electric butterfly valve, a pressure signal sensor, a flow sensor, a connecting pipe, a pressure signal sensor, a flow sensor and a pressure signal sensor are sequentially installed on the first water supply pipeline from the first end to the second end.

[0044] In this example, the first water supply pipeline is connected to the water hammer elimination box via a connecting pipe, and a ball valve is provided on the connecting pipe. The ball valve controls whether the water hammer elimination box is connected to the water supply pipeline. The water hammer elimination box is provided with a liquid level sensor and a temperature sensor, a pressure sensor is provided at the bottom, a displacement sensor is provided in the air valve, and a gas sensor is provided at the top. The water hammer elimination box is connected to an external display screen, which is used to display the monitoring data of the sensors on the water hammer elimination box in real time and to monitor the working status of the water hammer elimination box.

[0045] In this embodiment, the water supply pipeline group has two second water supply pipelines of different lengths, which are about 30m and 200m respectively. The first ends of the two second water supply pipelines are connected to the second end of the first water supply pipeline, and the second ends of the two second water supply pipelines are connected to the high-level water tank. Electric butterfly valves are installed on the two second water supply pipelines.

[0046] In this embodiment, the operation data acquisition module includes a pressure signal sensor and a flow sensor on the first water supply pipeline, which are used to collect the operation data of the water supply pipeline; it also includes a liquid level sensor, a temperature sensor, a pressure sensor on the water hammer elimination box, a displacement sensor and a gas sensor arranged in the air valve, etc., which are used to collect the operation data of the water hammer elimination box.

[0047] In this example, the control center is connected to the operation data acquisition module for communication, obtains the operation data collected by the operation data acquisition module, and displays and records it. In this embodiment, the control center is connected to the water pump, electric butterfly valve, water supply pump, etc., and the valve opening and water pump start and stop are adjusted by the control center.

[0048] In this embodiment, the test method of the water hammer elimination box performance test system is applied, which specifically includes the following steps:

[0049] According to the water level of the low-level water tank required for the test, the water level in the low-level water tank is controlled to be maintained at the corresponding water level through the first water level control module;

[0050] According to the water level of the high-level water tank required for the test, the water level in the high-level water tank is controlled to be maintained at the corresponding water level through the second water level control module;

[0051] According to the pipeline length required for the test, the electric butterfly valve on the second water supply pipeline is switched on and off to make the second water supply pipeline of the corresponding length conductive;

[0052] According to the access status of the water hammer elimination box required for the test, control the switch of the ball valve on the connecting pipe;

[0053] Turn on the water pump and electric butterfly valve on the first water supply pipeline, fill water into the water hammer elimination tank, and after the tank is full of water, operate the data acquisition module to collect operating data. After the data collected by the operating data acquisition module shows that the flow in the water supply pipeline is stable, turn off the water pump and the electric butterfly valve at the same time.

[0054] 1. Used for 30m pipeline without water hammer protection test.

[0055] Close the ball valve, start the low-level make-up water pump and the high-level make-up water pump, open the high-level water tank and set the electric butterfly valve corresponding to the overflow water level, and wait for the water level in the water tank to stabilize to the set value; adjust the pipeline to a 30m test pipeline, open the butterfly valve on the 30m second water supply pipeline, and close the butterfly valve on the 200m second water supply pipeline; open the butterfly valve on the first water supply pipeline, start the water pump on the first water supply pipeline, fill the water hammer elimination tank with water, wait for the tank to be full of water, read the flow sensor data on the first water supply pipeline, and start measuring after the flow stabilizes. At the same time, close the butterfly valve and water pump on the first water supply pipeline to realize the 30m pipeline without water hammer protection facilities and pump stop test; after the pressure signal sensor data is stable, stop measuring and export the data.

[0056] 2. Used for performance test of water hammer elimination box in 30m pipeline.

[0057] Open the ball valve, start the low-level make-up water pump and the high-level make-up water pump, open the high-level water tank and set the electric butterfly valve corresponding to the overflow water level, and wait for the water level in the water tank to stabilize to the set value; adjust the pipeline to a 30m test pipeline, open the butterfly valve on the 30m second water supply pipeline, and close the butterfly valve on the 200m second water supply pipeline; open the butterfly valve on the first water supply pipeline, start the water pump on the first water supply pipeline, fill the water hammer elimination box with water, wait for the tank to be full of water, read the flow sensor data on the first water supply pipeline, and start measuring after the flow stabilizes. At the same time, close the butterfly valve and water pump on the first water supply pipeline to implement the 30m pipeline water hammer elimination box protection pump stop test; after the pressure signal sensor data is stable, stop measuring and export the data.

[0058] 3. Used for 200m pipeline without water hammer protection test.

[0059] Close the ball valve, start the low-level make-up water pump and the high-level make-up water pump, open the high-level water tank to set the electric butterfly valve corresponding to the overflow water level, and wait for the water level in the water tank to stabilize to the set value; adjust the pipeline to a 200m test pipeline, open the butterfly valve on the 200m second water supply pipeline, and close the butterfly valve on the 30m second water supply pipeline; open the butterfly valve on the first water supply pipeline, start the water pump on the first water supply pipeline, read the flow sensor data on the first water supply pipeline, and start measuring after the flow stabilizes. At the same time, close the butterfly valve and water pump on the first water supply pipeline to realize the 200m pipeline without water hammer protection facilities pump stop test; after the pressure signal sensor data is stable, stop measuring and export the data.

[0060] 4. Used for performance test of water hammer elimination box in 200m pipeline.

[0061] Open the ball valve, start the low-level make-up water pump and the high-level make-up water pump, open the high-level water tank and set the electric butterfly valve corresponding to the overflow water level, and wait for the water level in the water tank to stabilize to the set value; adjust the pipeline to a 200m test pipeline, open the butterfly valve on the 200m second water supply pipeline, and close the butterfly valve on the 30m second water supply pipeline; open the butterfly valve on the first water supply pipeline, start the water pump on the first water supply pipeline, read the flow sensor data on the first water supply pipeline, and start measuring after the flow stabilizes. At the same time, close the butterfly valve and water pump on the first water supply pipeline to implement the 200m pipeline water hammer elimination box protection pump stop test; after the pressure signal sensor data is stable, stop measuring and export the data.

Claims

1. A water hammer elimination box performance test system, characterized in that: include: The low-level water tank is equipped with a first water level control module, which can keep the water level in the low-level water tank at a corresponding preset water level; The high-level water tank is equipped with a second water level control module, which can keep the water level in the high-level water tank at a corresponding preset water level; A first water supply pipeline, a first end of which is connected to the low-level water tank, a water pump and an electric butterfly valve are provided on the pipeline, and a water hammer elimination box is connected to the pipeline on the side of the water pump away from the low-level water tank through a connecting pipe, and a ball valve is provided on the connecting pipe; A water supply pipeline group, comprising a plurality of second water supply pipelines of different lengths, wherein the first ends of the second water supply pipelines are connected to the second ends of the first water supply pipelines, and the second ends of the second water supply pipelines are connected to the high-level water tank, and an electric butterfly valve is installed on each second water supply pipeline; Operation data acquisition module, used to collect operation data of water supply pipeline and water hammer elimination box; The control center is connected to the electric butterfly valve, ball valve, and water pump circuits, and is used to control the opening of the electric butterfly valves on each pipeline, the opening of the connecting pipe ball valve, and the start and stop of the water pump. It is communicated with the operation data acquisition module to obtain and display the operation data collected by the operation data acquisition module.

2. The water hammer elimination box performance test system according to claim 1 is characterized in that: The first water level control module comprises: Reservoirs; A low-level water supply pipe, on which a low-level water supply pump is provided, a first end of the water supply pipe is connected to the water reservoir, and a second end of the water supply pipe is connected to the low-level water tank; A low-level overflow pipe, wherein the first end of the overflow pipe is connected to the water reservoir, and the second end of the overflow pipe is connected to the low-level water tank and corresponds to a preset water level of the low-level water tank.

3. The water hammer elimination box performance test system according to claim 1 is characterized in that: The second water level control module comprises: Reservoirs; A high-level water supply pipe, on which a high-level water supply pump is provided, the first end of the water supply pipe is connected to the water reservoir, and the second end of the water supply pipe is connected to the high-level water tank; A high-level overflow pipe, the first end of which is connected to the water reservoir, and the second end of which is connected to the high-level water tank via multiple overflow branches and corresponds one-to-one with multiple preset water levels of the high-level water tank, and an electric butterfly valve is provided on the overflow branch.

4. The water hammer elimination box performance test system according to claim 1 is characterized in that: The operation data acquisition module comprises: A pipeline data acquisition module, comprising a plurality of flow sensors and pressure signal sensors arranged on the first water supply pipeline; The water hammer box data acquisition module comprises a liquid level sensor and a temperature sensor arranged in the water hammer elimination box, and a pressure sensor and a gas sensor arranged at the bottom of the water hammer elimination box.

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