A multi-functional comprehensive test equipment for water pumps

Abstract

A multifunctional comprehensive test equipment for water pumps, comprising an outlet water tank, an inlet water tank, an inlet water pipeline, an outlet water pipeline, an adjustment pipeline and an inlet and exhaust pipeline. The inlet water pipeline connects the inlet end of the water pump to be tested and the outlet water tank. The outlet water pipeline connects the outlet end of the water pump to be tested and the inlet water tank. The adjustment pipeline connects the outlet water tank and the inlet water tank. One end of the inlet and exhaust pipeline is connected to the top of the outlet water tank. The top of the inlet water tank is provided with an inlet interface and a ventilation interface. The bottoms of both the inlet water tank and the outlet water tank are provided with drain pipelines. There are several adjustment pipelines, and each adjustment pipeline is provided with an electromagnetic flowmeter for detecting the flow rate of the corresponding adjustment pipeline and a first on-off valve for controlling the on-off of the corresponding adjustment pipeline, enabling the entire test process of the water pump to achieve automated testing, significantly improving the accuracy of the test, reducing the work intensity of test personnel, improving the test efficiency and reducing the test cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of water pump test equipment, and particularly relates to a multi-functional comprehensive water pump test equipment. Background Art

[0002] After the water pump is manufactured and before it is sold out of the factory, especially after a new water pump is developed, it is necessary to conduct reliability tests on it. In the test, it is necessary to simulate the real use environment, make the water pump work continuously, and monitor the state of the water pump during this process to see if it meets the requirements of usability and safety, and check whether the real use parameters of the tester are consistent with the design parameters. If the requirements cannot be met, the water pump needs to be improved. At present, many water pump manufacturers still use manual testing for operation. Manual testing has defects such as large measurement errors, difficult judgment of the stability of the test system, large data calculation volume, high labor intensity of the test personnel, and poor working environment. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a multi-functional comprehensive water pump test equipment.

[0004] The technical solution adopted by the present invention to solve its technical problems is:

[0005] A multi-functional comprehensive water pump test equipment includes a water outlet tank, a water inlet tank, a water inlet pipeline, a water outlet pipeline, an adjustment pipeline, and an air inlet and exhaust pipeline. The water inlet pipeline connects the water inlet end of the water pump to be tested and the water outlet tank. The water outlet pipeline connects the water outlet end of the water pump to be tested and the water inlet tank. The adjustment pipeline connects the water outlet tank and the water inlet tank. One end of the air inlet and exhaust pipeline is connected to the top of the water outlet tank. The top of the water inlet tank is provided with a water inlet interface and a ventilation interface. The bottoms of both the water inlet tank and the water outlet tank are provided with a water discharge pipeline. There are several adjustment pipelines, and each adjustment pipeline is provided with an electromagnetic flowmeter for detecting the flow rate of the corresponding adjustment pipeline and a first on-off valve for controlling the on-off of the corresponding adjustment pipeline.

[0006] As a further improvement of the present invention, the water inlet pipeline includes a main water inlet pipe and several sub-water inlet pipes with different pipe diameters. One end of the sub-water inlet pipe is connected to the main water inlet pipe, and the other end is connected to the water inlet end of the water pump to be tested.

[0007] As a further improvement of the present invention, the water outlet pipeline includes a main water outlet pipe and several sub-water outlet pipes with different pipe diameters. One end of the sub-water outlet pipe is connected to the main water outlet pipe, and the other end is connected to the water outlet end of the test water pump.

[0008] As a further improvement of the present invention, the adjustment pipeline is built with steel pipes.

[0009] As a further improvement of the present invention, the main water inlet pipe is built with steel pipes, and the branch water inlet pipe is built with a steel pipe, a hose and a water inlet joint connected in sequence. The steel pipe and the hose are connected by a second switch valve.

[0010] As a further improvement of the present invention, the main water outlet pipe is built with steel pipes, and the branch water outlet pipe is built with a steel pipe, a hose and a water inlet joint connected in sequence. The steel pipe and the hose are connected by a third switch valve.

[0011] As a further improvement of the present invention, the air inlet and exhaust pipeline is provided with a fourth switch valve for controlling its on-off.

[0012] The beneficial effects of the present invention are as follows: The multifunctional water pump comprehensive test equipment of the present invention solves the problems of manual operation and testing in the current water pump test, large measurement errors, difficult judgment of the stability of the test system, large amount of data calculation, high labor intensity of the test personnel and poor working environment. When conducting the test, only the water pump to be tested needs to be connected to the water inlet pipeline and the water outlet pipeline, and the water pump to be tested is started to simulate the normal working environment for the test. The flow rate of the simulated environment is adjusted through the electromagnetic flowmeter, so as to test the performance data of the water pump under different working conditions. The test data is transmitted to the control system for processing to obtain the test result, realizing the automatic test of the entire test process of the water pump, significantly improving the accuracy of the test, reducing the working intensity of the test personnel, improving the test efficiency and reducing the test cost. Description of the Drawings

[0013] The present invention will be further described below in conjunction with the drawings and embodiments:

[0014] Figure 1 It is a front view structural schematic diagram of the test equipment of this embodiment;

[0015] Figure 2 It is a top view structural schematic diagram of the test equipment of this embodiment;

[0016] Figure 3 It is a transverse cross-sectional structural schematic diagram of the steel pipe of this embodiment;

[0017] Figure 4 It is a longitudinal cross-sectional structural schematic diagram of the hose of this embodiment. Specific Embodiments

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0019] Embodiment:

[0020] Such as Figures 1 to 4As shown in the figure, this embodiment discloses a multifunctional water pump comprehensive test equipment, which includes an outlet water tank 1, an inlet water tank 2, an inlet pipeline 3, an outlet pipeline 4, a regulating pipeline 5 and an inlet and exhaust pipeline 6. The inlet pipeline 3 is connected to the inlet end of the water pump to be tested and the outlet water tank 1. The outlet pipeline 4 is connected to the outlet end of the water pump to be tested and the inlet water tank 2. The regulating pipeline 5 is connected to the outlet water tank 1 and the inlet water tank 2. One end of the inlet and exhaust pipeline 6 is connected to the top of the outlet water tank 1. An inlet interface 21 and a ventilation interface 22 are provided at the top of the inlet water tank 2. Drain pipelines 7 are provided at the bottoms of both the inlet water tank 2 and the outlet water tank 1. A fifth switch valve 30 for controlling the on-off of the pipeline is also provided in the drain pipeline 7. There are four regulating pipelines 5. An electromagnetic flowmeter 8 for detecting the flow rate of the corresponding regulating pipeline 5 and a first switch valve 9 for controlling the on-off of the corresponding regulating pipeline 5 are provided in each regulating pipeline 5. The electromagnetic flowmeters 8 in different regulating pipelines 5 are different, and the range of the electromagnetic flowmeter 8 is adapted to the pipe diameter of the corresponding regulating pipeline 5.

[0021] In this embodiment, the inlet pipeline 3 includes a main inlet pipe 31 and two sub-inlet pipes 32 with different pipe diameters. One end of the sub-inlet pipe 32 is connected to the main inlet pipe 31, and the other end is connected to the inlet end of the water pump to be tested. The two sub-inlet pipes 32 are arranged in parallel. The outlet pipeline 4 includes a main outlet pipe 41 and two sub-outlet pipes 42 with different pipe diameters. One end of the sub-outlet pipe 42 is connected to the main outlet pipe 41, and the other end is connected to the outlet end of the test water pump. The two sub-outlet pipes 42 are also arranged in parallel. The number of sub-inlet pipes 32 is the same as the number of sub-outlet pipes 42, and the sub-inlet pipes 32 and sub-outlet pipes 42 with the same pipe diameter pairing. The regulating pipeline 5 is built with steel pipes. Since the positions of the inlet water tank 2 and the outlet water tank 1 are fixed after installation, the steel pipe-built regulating pipeline 5 is used to connect the inlet water tank 2 and the outlet water tank 1, making the construction of the regulating pipeline 5 clearer and more reasonable. Because the inlet pipeline 3 needs to be connected to the water pump to be tested and frequent replacement tests are required, the main inlet pipe 31 is built with steel pipes, and the sub-inlet pipe 32 is built with a steel pipe, a hose and a water inlet joint connected in sequence. The steel pipe and the hose are connected through a second switch valve 9. By adopting the construction method of combining steel pipes and hoses, while the installation position of the inlet pipeline 3 is relatively fixed, the flexibility of the connection work of the water pump to be tested is made flexible through the flexibility of the hose, and the connection convenience is improved. Similarly, in order to facilitate the connection between the outlet pipeline 4 and the water pump to be tested, the outlet pipeline 4 is set to the following construction structure: the main outlet pipe 41 is built with steel pipes, and the sub-outlet pipe 42 is built with a steel pipe, a hose and a water inlet joint connected in sequence. The steel pipe and the hose are connected through a third switch valve 10. A fourth switch valve 20 for controlling its on-off is provided in the inlet and exhaust pipeline 6.

[0022] In this embodiment, the first switching valve 9, the second switching valve 9, the third switching valve 10, the fourth switching valve 20, and the fifth switching valve 30 are all electrically operated switching valves. Moreover, the electromagnetic flowmeter 8, the first switching valve 9, the second switching valve 9, the third switching valve 10, the fourth switching valve 20, and the fifth switching valve 30 are all connected to the control system through circuits, and execute corresponding actions by receiving the electrical signals transmitted by the control system. At the same time, in order to collect various test data of the water pump to be tested during the test process, an inlet pressure sensor and an outlet pressure sensor are respectively installed in the inlet joint and the outlet joint. The inlet pressure sensor and the outlet pressure sensor are respectively used to detect the pressure at the inlet end and the outlet end of the water pump to be tested; a torque and speed sensor is connected to the mechanical interface of the water pump, which is used to detect the torque, speed, and power of the water pump during operation; a liquid level sensor and a gas pressure sensor are arranged in both the inlet tank 2 and the outlet tank 1. The liquid level sensor and the gas pressure sensor are respectively used to detect the liquid level condition and the gas pressure condition of the corresponding inlet tank 2 and outlet tank 1, so as to control the water supply and drainage work and the air intake and exhaust work of the inlet tank 2 and the outlet tank 1. The inlet pressure sensor, the outlet pressure sensor, the torque and speed sensor, the liquid level sensor, and the gas pressure sensor are all electrically connected to the control system. The control system processes the signals collected by the above sensors to obtain the performance parameters of the water pump under different working conditions.

[0023] During the test process, in the length of the pipeline through which the test water flows, the lengths of the steel pipe and the hose account for a relatively large proportion, generally exceeding 90%. Therefore, during the test process of the test water, most of the losses in terms of pressure, flow rate, etc. are lost in the steel pipe and the hose, resulting in poor accuracy of the water pump test. Therefore, it is necessary to select steel pipes and hoses that meet the test requirements to reduce the energy loss when the water flows through. It is required that the steel pipe and the hose have the characteristics of low flow resistance, high wear resistance, and corrosion resistance. Herein, a manufacturing method of a steel pipe and a manufacturing method of a hose are also provided.

[0024] The steel pipe includes a glass inner tube A, an elastic buffer layer B, and a protective steel pipe C that are sequentially distributed layer by layer from the inside to the outside; its manufacturing method is as follows:

[0025] Step 1, prepare the raw materials according to the following weight ratio: 10%-15% of silicon dioxide, 10%-15% of aluminum oxide, 5%-10% of calcium oxide, 5%-10% of magnesium oxide, 5%-8% of quartz sand, 3%-5% of borax, 3%-5% of carbonic acid, and the balance is epoxy resin;

[0026] Step 2: Add the prepared silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, quartz sand, borax, and carbonate in Step 1 into a mixer for grinding and mixing evenly to obtain a mixed material. Load the obtained mixed material into a furnace for melting. The furnace temperature is 850°C - 900°C. After complete fusion, a molten liquid is obtained. Cool the molten liquid to 250°C - 280°C, and add epoxy resin. Epoxy resin is in a molten state in the range of 250°C - 280°C. Therefore, epoxy resin fuses with the molten liquid in this temperature environment to form a glass inner tube forming sol;

[0027] Step 3: Extrude and form the glass inner tube forming sol obtained in Step 2 through an extruder to form a glass inner tube blank;

[0028] Step 4: Put the glass inner tube blank obtained in Step 3 into a microwave oven, keep it at 350°C for 10 minutes for nucleation, and keep it at 500°C for 40 minutes for crystallization to obtain a glass inner tube;

[0029] Step 5: Coat the outer wall of the glass inner tube obtained in Step 4 with glass glue. Select an unpolished and unpolished stainless steel pipe as the protective steel pipe, and the stainless steel model is 317. Sleeve the protective steel pipe on the outer wall of the glass inner tube to form an interval for the formation of an elastic buffer layer between the protective steel pipe and the glass inner tube;

[0030] Step 6: Prepare the raw materials according to the following weight ratio: 5% - 10% aramid fiber, 10% - 15% carbon fiber, 10% - 15% polyamide resin, 5% - 8% polyethylene resin, 20% - 30% phenolic resin, and the balance is epoxy resin;

[0031] Step 7: Put the aramid fiber, carbon fiber, polyamide resin, polyethylene resin, phenolic resin, and epoxy resin prepared in Step 6 into a heating furnace for melting and mixing evenly to form a sol liquid. Inject the sol liquid into the interval for the formation of an elastic buffer layer formed between the protective steel pipe and the glass inner tube, fill it up and pressurize it within the range of 140 bar - 160 bar, and keep the pressure for 30 s to obtain a composite pipe. The sol liquid adheres to the outer wall of the glass inner tube through the viscosity of the glass glue, and since the protective steel pipe is an unpolished and unpolished stainless steel pipe, there is an adhesive effect between the inner wall of the protective steel pipe and the sol liquid itself;

[0032] Step 8: Take out the composite pipe obtained in Step 7 and cool it naturally;

[0033] Step 9: Spray a layer of anti-rust paint on the outer wall of the protective steel pipe, and obtain a steel pipe after drying and curing.

[0034] The inner wall of the steel pipe manufactured by the above method has high smoothness, wear resistance and corrosion resistance, and can well meet the usage requirements of the fluid in the test equipment, with less loss of pressure, flow rate, etc. in the fluid, improving the detection accuracy of the test equipment. However, the glass inner tube is relatively fragile and easily damaged by external force impact. Therefore, an elastic buffer layer is provided on the outer wall of the glass inner tube, a protective steel pipe is provided on the outer wall of the elastic buffer layer, and an anti-rust paint is sprayed on the outer wall of the protective steel pipe, so as to implement full protection for the glass inner tube. The protective steel pipe provides rigid protection, while the elastic buffer layer provides flexible protection, so as to comprehensively resist external force impact and prevent the glass inner tube from being damaged by impact.

[0035] The hose of this embodiment includes a base tube D, a steel strip E, an epoxy resin layer F and a polyester fiber layer G.

[0036] The manufacturing method of the hose is as follows:

[0037] Step 1: Put the polyethylene raw material into the batching tank of the extruder;

[0038] Step 2: Extrude and form through the extruder, and cool to obtain the base tube;

[0039] Step 3: Spirally wind the steel strip on the outer wall of the base tube, and the cross section of the steel strip is triangular;

[0040] Step 4: Coat the outer wall of the steel strip with epoxy resin to form an epoxy resin layer, and the surrounding resin layer also spirally winds on the outer wall of the base tube along with the steel strip;

[0041] Step 5: Wind a layer of polyester fiber on the entire outer surface of the outer wall of the pipe formed in Step 4 to form a polyester fiber layer, and the polyester fiber layer completely wraps the outer wall of the pipe;

[0042] Step 6: Cure the pipe obtained in Step 5 at high temperature to obtain the hose.

[0043] The above is only the preferred embodiment of the present invention, and all technical solutions that achieve the purpose of the present invention by basically the same means fall within the protection scope of the present invention.

Claims

1. A multi-functional comprehensive test equipment for water pumps, characterized in that: It includes a water outlet tank (1), a water inlet tank (2), a water inlet pipeline (3), a water outlet pipeline (4), a regulating pipeline (5) and an air inlet and exhaust pipeline (6). The water inlet pipeline (3) connects the water inlet end of the water pump to be tested and the water outlet tank (1). The water outlet pipeline (4) connects the water outlet end of the water pump to be tested and the water inlet tank (2). The regulating pipeline (5) connects the water outlet tank (1) and the water inlet tank (2). One end of the air inlet and exhaust pipeline (6) is connected to the top of the water outlet tank (1). The top of the water inlet tank (2) is provided with a water inlet interface (21) and a ventilation interface (22). The bottoms of both the water inlet tank (2) and the water outlet tank (1) are provided with a water discharge pipeline (7). There are several regulating pipelines (5), and each regulating pipeline (5) is provided with an electromagnetic flowmeter (8) for detecting the flow rate of the corresponding regulating pipeline (5) and a first switch valve for controlling the on-off of the corresponding regulating pipeline (5). The water inlet pipeline (3) includes a main water inlet pipe (31) and several sub-water inlet pipes (32) with different pipe diameters. One end of the sub-water inlet pipe (32) is connected to the main water inlet pipe (31), and the other end is connected to the water inlet end of the water pump to be tested. The water outlet pipeline (4) includes a main water outlet pipe (41) and several sub-water outlet pipes (42) with different pipe diameters. One end of the sub-water outlet pipe (42) is connected to the main water outlet pipe (41), and the other end is connected to the water outlet end of the water pump to be tested. The regulating pipeline (5) is built with steel pipes. The main water inlet pipe (31) is built with steel pipes. The sub-water inlet pipe (32) is built with a steel pipe, a hose and a water inlet joint connected in sequence, and the steel pipe and the hose are connected through a second switch valve. The main water outlet pipe (41) is built with steel pipes. The sub-water outlet pipe (42) is built with a steel pipe, a hose and a water outlet joint connected in sequence, and the steel pipe and the hose are connected through a third switch valve (10). The steel pipe includes a glass inner tube (A), an elastic buffer layer (B) and a protective steel pipe (C) that are sequentially distributed layer by layer from the inside to the outside. Its manufacturing method is as follows: Step 1: Prepare the raw materials according to the following weight ratio: 10%-15% of silica, 10%-15% of alumina, 5%-10% of calcium oxide, 5%-10% of magnesium oxide, 5%-8% of quartz sand, 3%-5% of borax, 3%-5% of carbonic acid, and the balance is epoxy resin; Step 2: Add the silica, alumina, calcium oxide, magnesium oxide, quartz sand, borax, and carbonic acid prepared in Step 1 into a mixer for grinding and mixing evenly to obtain a mixture. Load the obtained mixture into a furnace for melting. The furnace temperature is 850°C - 900°C. After complete fusion, a melt is obtained. Cool the melt to 250°C - 280°C, and add epoxy resin. Epoxy resin is in a molten state in the range of 250°C - 280°C. Epoxy resin fuses with the melt in this temperature environment to form a glass inner tube forming sol; Step 3: Extrude and form the glass inner tube forming sol obtained in Step 2 through an extruder to form a glass inner tube blank; Step 4: Place the glass inner tube blank obtained in Step 3 into a microwave oven, nucleate it at 350 °C for 10 min, and crystallize it at 500 °C for 40 min to obtain a glass inner tube; Step 5: Coat the outer wall of the glass inner tube obtained in Step 4 with glass glue. Select an unpolished and unpolished stainless steel tube as the protective steel tube, and put the protective steel tube on the outer wall of the glass inner tube to form an interval for the formation of an elastic buffer layer between the protective steel tube and the glass inner tube; Step 6: Prepare the raw materials according to the following weight ratios: 5%-10% aramid fiber, 10%-15% carbon fiber, 10%-15% polyamide resin, 5%-8% polyethylene resin, 20%-30% phenolic resin, and the balance is epoxy resin; Step 7: Put the aramid fiber, carbon fiber, polyamide resin, polyethylene resin, phenolic resin and epoxy resin prepared in Step 6 into a heating furnace, melt and mix them evenly to form a sol solution. Inject the sol solution into the interval for the formation of an elastic buffer layer formed between the protective steel tube and the glass inner tube, fill it up and pressurize it within the range of 140 bar - 160 bar, and keep the pressure for 30 s to obtain a composite pipe; Step 8: Take out the composite pipe obtained in Step 7 and cool it naturally; Step 9: Spray a layer of anti-rust paint on the outer wall of the protective steel tube, and dry and cure it to obtain a steel tube; The hose includes a base tube (D), a steel strip (E), an epoxy resin layer (F) and a polyester fiber layer (G); the manufacturing method of the hose is as follows: Step 1: Put the polyethylene raw material into the batching tank of the extruder; Step 2: Extrude and mold through the extruder, and cool to obtain a base tube; Step 3: Spirally wind a steel strip on the outer wall of the base tube, and the cross-section of the steel strip is triangular; Step 4: Coat the outer wall of the steel strip with epoxy resin to form an epoxy resin layer, and the epoxy resin layer also spirally winds on the outer wall of the base material tube along with the steel strip; Step 5: Wind a layer of polyester fiber on the entire outer surface of the outer wall of the pipe formed in Step 4 to form a polyester fiber layer, and the polyester fiber layer completely wraps the outer wall of the pipe; Step 6: Cure the pipe obtained in Step 5 at high temperature to obtain a hose.

2. The multifunctional water pump comprehensive test equipment according to claim 1, characterized in that: The intake and exhaust pipeline (6) is provided with a fourth switching valve (20) for controlling its on-off.

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