Test system for self-priming pumps

Abstract

The application provides a kind of self-priming pump test system, including water tank, measuring tube, outlet pipe and control valve group, measuring tube includes ascending section, descending section and multiple connecting sections, ascending section is vertically arranged, ascending section has multiple detection points, the lower end of ascending section extends below the liquid level of water tank, multiple connecting sections correspond to multiple detection points one by one, and the first end of connecting section is connected with detection point, the second end of connecting section is connected with descending section, the lower end of descending section is connected with the inlet of self-priming pump, the first end of outlet pipe is connected with the outlet of self-priming pump, the second end of outlet pipe is arranged at water tank, control valve group is used to connect ascending section, one of connecting sections and descending section, when self-priming pump starts, the time of water flow reaching connecting section is detected to determine the self-priming time of self-priming pump at the detection point corresponding to connecting section. The test system of the application does not need to build self-priming test platform, does not need to climb operation, improves detection efficiency and safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pump testing, in particular to a test system of a self-priming pump. BACKGROUND

[0002] The self-priming pump is a kind of self-priming centrifugal pump, which can transport various types of liquid, and has been widely used in many industrial fields such as chemical industry, petroleum, pharmaceutical, mining, papermaking and fiber due to its simple and compact structure, excellent energy efficiency and outstanding self-priming ability.

[0003] During the production and manufacturing process of the self-priming pump, its performance needs to be tested to ensure that its quality and performance meet the requirements. When testing the self-priming time of the self-priming pump, the performance test bench is needed: the self-priming pump is installed on the self-priming test bench, the self-priming test bench has a high vertical distance, the self-priming pump is installed at a high place, and water is pumped from a low place to the top, and then the self-priming time is measured.

[0004] However, the existing self-priming test bench often consumes a lot of manpower and time during construction, and the installation operation of the self-priming pump on the test bench is extremely inconvenient, which directly leads to a significant reduction in the overall test efficiency of the self-priming pump. SUMMARY

[0005] The present application provides a test system of a self-priming pump, which does not need to build a self-priming test bench, and the detection personnel do not need to climb during the detection process, thereby improving the detection efficiency and safety.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] The present application provides a test system of a self-priming pump, which includes: a water tank for storing water; a measuring pipe, the measuring pipe includes an ascending section, a descending section and a plurality of connecting sections, the ascending section is vertically arranged, the ascending section has a plurality of detection points, the lower end of the ascending section extends below the liquid level of the water tank, the plurality of connecting sections correspond to the plurality of detection points one by one, the first end of the connecting section is connected with the detection point, the second end of the connecting section is connected with the descending section, and the lower end of the descending section is connected with the inlet of the self-priming pump; a water outlet pipe, the first end of the water outlet pipe is connected with the outlet of the self-priming pump, and the second end of the water outlet pipe is arranged at the water tank; a control valve group, the control valve group is used to connect the ascending section, one of the connecting sections and the descending section, when the self-priming pump is started, the time of water flow reaching the connecting section is detected to determine the self-priming time of the self-priming pump at the detection point corresponding to the connecting section.

[0008] As an optional implementation, the control valve group further comprises: at least one first isolation valve, the at least one first isolation valve is arranged in the ascending section, and each first isolation valve is located between two adjacent detection points; at least one second isolation valve, the second isolation valve is arranged in the connecting section one by one, except for the connecting section corresponding to the highest detection point; and at least one third isolation valve, the at least one third isolation valve is arranged in the descending section, and each third isolation valve is located between the second ends of two adjacent connecting sections.

[0009] As an optional implementation, each first isolation valve is arranged close to a detection point with a lower position; and / or, each second isolation valve is arranged close to a detection point.

[0010] As an optional implementation, the test system further comprises: a plurality of fluid sensing parts, the plurality of fluid sensing parts are arranged in the connecting section and close to the detection points to detect whether there is water flow near the detection points; a timer for timing; and a controller electrically connected with the timer and the plurality of fluid sensing parts, when the self-priming pump meets the self-priming time detection condition, the controller controls the timer to start timing, when the fluid sensing part detects that there is water flow near the detection point, the controller controls the timer to stop timing, so as to determine the self-priming time of the self-priming pump at the detection point.

[0011] As an optional implementation, the water tank is connected with the inlet of the self-priming pump; the control valve group further comprises: a fourth isolation valve arranged in the flow path of the water tank and the self-priming pump; a fifth isolation valve arranged in the descending section and located between the second end of the lowest connecting section and the lower end of the descending section; and an exhaust valve arranged in the water outlet pipe for exhausting air in the self-priming pump; the self-priming time detection condition is that the fifth isolation valve is closed, the fourth isolation valve and the exhaust valve are opened, the self-priming pump is started, when the exhaust valve exhausts continuous water flow, the fourth isolation valve and the exhaust valve are closed, and the fifth isolation valve is opened.

[0012] As an optional implementation, the test system further comprises: a water inlet pipe, the outlet of the water inlet pipe is connected with the inlet of the self-priming pump; a branch pipe, the branch pipe is connected with the outlet of the water tank and the inlet of the water inlet pipe; the lower end of the descending section is connected with the inlet of the water inlet pipe; and the fourth isolation valve is arranged in the branch pipe.

[0013] As an optional implementation, the test system further comprises: a check valve arranged on the water inlet pipe for preventing water flow from flowing backward from the inlet of the self-priming pump.

[0014] As an optional implementation, the test system further comprises: an inlet pressure detection unit arranged on the water inlet pipe and configured to detect the water flow pressure on the water inlet pipe; an outlet pressure detection unit arranged on the water outlet pipe and configured to detect the water flow pressure on the water outlet pipe; and a flow detection unit arranged on the water outlet pipe and configured to detect the flow on the water outlet pipe.

[0015] As an optional implementation, the control valve group further comprises: an adjusting valve arranged on the water outlet pipe and configured to adjust the flow of the self-priming pump.

[0016] As an optional implementation, the test system further comprises: a vacuum detection unit arranged on the descending section and configured to detect the vacuum degree of the descending section.

[0017] The test system of the present application sets the water tank and the self-priming pump on the ground, forms the water suction path by using the ascending section, the connecting section and the descending section, and realizes the detection of the self-priming time of the self-priming pump, so that the self-priming test platform does not need to be built, and the detection personnel do not need to perform the climbing operation during the detection process, thereby improving the detection efficiency and safety. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0019] Figure 1 a schematic diagram of a test system provided by an embodiment of the present application;

[0020] Figure 2 a partial schematic diagram of a test system provided by another embodiment of the present application;

[0021] Figure 3 a control principle block diagram of a test system provided by an embodiment of the present application.

[0022] Explanation of reference signs:

[0023] 100, self-priming pump; 10, water tank; 11, drain pipe; 12, drain valve; 20, measuring pipe; 210, rising section; 212, detection point; 220, connecting section; 230, falling section; 30, water outlet pipe; 40, control valve group; 410, first isolation valve; 420, second isolation valve; 430, third isolation valve; 440, fourth isolation valve; 450, fifth isolation valve; 460, exhaust valve; 470, check valve; 480, regulating valve; 510, fluid sensing part; 520, timer; 530, controller; 540, inlet pressure detection part; 550, outlet pressure detection part; 560, flow detection part; 570, vacuum detection part; 610, water inlet pipe; 620, branch pipe. DETAILED DESCRIPTION

[0024] In the prior art, when the self-priming time of a self-priming pump is tested, a performance test bench is used: the self-priming pump is installed on the self-priming test bench, the self-priming test bench has a high vertical distance, the self-priming pump is installed at a high position, and water is pumped from a low position upward, and then the self-priming time is measured. However, the existing self-priming test bench often consumes a lot of manpower and time in the construction process, and the installation operation of the self-priming pump on the test bench is extremely inconvenient, which directly leads to a significant reduction in the overall test efficiency of the self-priming pump.

[0025] In order to overcome the defects in the prior art, the present application provides a test system for a self-priming pump, which sets the water tank and the self-priming pump on the ground, forms a water pumping path by using the rising section, the connecting section and the falling section, and realizes the detection of the self-priming time of the self-priming pump, so that the self-priming test bench does not need to be built, and the detection personnel do not need to perform high-altitude operations during the detection process, thereby improving the detection efficiency and safety.

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. In the case of no conflict, the embodiments described below and the features in the embodiments can be combined with each other.

[0027] Reference is made to Figure 1 and Figure 2The application provides a test system of a self-priming pump 100, which comprises a water tank 10, a measuring pipe 20, a water outlet pipe 30 and a control valve group 40. The water tank 10 is used for storing water. The measuring pipe 20 comprises an ascending section 210, a descending section 230 and a plurality of connecting sections 220, the ascending section 210 is vertically arranged, the ascending section 210 has a plurality of detection points 212, the lower end of the ascending section 210 is below the liquid level of the water tank 10, the plurality of connecting sections 220 correspond to the plurality of detection points 212 one by one, the first end of the connecting section 220 is connected with the detection point 212, the second end of the connecting section 220 is connected with the descending section 230, and the lower end of the descending section 230 is connected with the inlet of the self-priming pump 100. The first end of the water outlet pipe 30 is connected with the outlet of the self-priming pump 100, and the second end of the water outlet pipe 30 is arranged at the water tank 10. The control valve group 40 is used for conducting the ascending section 210, one of the connecting sections 220 and the descending section 230, and when the self-priming pump 100 is started, the time of water reaching the connecting section 220 is detected to determine the self-priming time of the self-priming pump 100 at the detection point 212 corresponding to the connecting section 220.

[0028] The water tank 10 stores the water for detection, a sewage pipe 11 is arranged at the bottom of the water tank 10, a sewage valve 12 is arranged on the sewage pipe 11, and the sewage valve 12 is used for sewage discharge when the water tank 10 is cleaned or the water quality in the water tank 10 is periodically replaced. The water tank 10 can be arranged on the ground.

[0029] Since the ascending section 210 is vertically arranged, the plurality of connecting sections 220 correspond to the plurality of detection points 212 one by one, the first end of the connecting section 220 is connected with the detection point 212, the second end of the connecting section 220 is connected with the descending section 230, the lower end of the descending section 230 is connected with the inlet of the self-priming pump 100, the first end of the water outlet pipe 30 is connected with the outlet of the self-priming pump 100, the second end of the water outlet pipe 30 is arranged at the water tank 10, and the control valve group 40 is used for conducting the ascending section 210, one of the connecting sections 220 and the descending section 230, so that when the self-priming pump 100 is started, the self-priming pump 100 can suck the water in the water tank 10 to one of the detection points 212, then discharge the water to the descending section 230 through the connecting section 220 connected with the detection point 212, and finally enter the self-priming pump 100, the water is discharged from the water outlet pipe 30 after the pressure in the self-priming pump 100 is increased, and then is returned to the water tank 10 to form a circulation.

[0030] Referring to Figure 2 The detection points 212 of the ascending section 210 can be flexibly arranged according to detection requirements, and in some exemplary embodiments, four detection points 212 can be arranged at 4m, 6m, 8m and 10m away from the lower end of the ascending section 210 respectively, so that the self-priming time of the self-priming pump 100 with the self-priming height of 4m, 6m, 8m and 10m respectively can be detected.

[0031] For example, when detecting the self-suction time of the self-suction pump 100 at a self-suction height of 4 m, the control valve group 40 can be used to open the ascending section 210, the connecting section 220 corresponding to the 4 m detection point 212, and the descending section 230, so that when the self-suction pump 100 is started, the water in the water tank 10 can only flow through this path, and as long as the time when the water flow reaches the 4 m detection point 212 is detected, the self-suction time at this self-suction height can be obtained.

[0032] As can be seen, the test system of the embodiment sets the water tank 10 and the self-suction pump 100 on the ground, uses the ascending section 210, the connecting section 220, and the descending section 230 to form a water suction path, and realizes the detection of the self-suction time of the self-suction pump 100, so that a self-suction test platform does not need to be built, and the detection personnel do not need to perform high-altitude operations during the detection process, thereby improving the detection efficiency and safety.

[0033] Referring to Figure 1 and Figure 2 In some embodiments, the control valve group 40 further includes at least one first isolation valve 410, at least one second isolation valve 420, and at least one third isolation valve 430. The at least one first isolation valve 410 is arranged in the ascending section 210, and each first isolation valve 410 is located between adjacent two detection points 212. The second isolation valve 420 is arranged in the connecting section 220 one by one, except for the connecting section 220 corresponding to the highest layer detection point 212. The at least one third isolation valve 430 is arranged in the descending section 230, and each third isolation valve 430 is located between the second ends of adjacent two connecting sections 220.

[0034] The first isolation valve 410 is arranged in the ascending section 210, and each first isolation valve 410 is located between adjacent two detection points 212, so that the first isolation valve 410 can control the fluid to reach the corresponding detection point 212.

[0035] The second isolation valve 420 is arranged in the connecting section 220 one by one, except for the connecting section 220 corresponding to the highest layer detection point 212, so that the corresponding connecting section 220 is opened and the remaining connecting sections 220 are closed by using the second isolation valve 420, so that the water flow can be discharged to the descending section 230.

[0036] The third isolation valve 430 is arranged in the descending section 230, and each third isolation valve 430 is located between the second ends of adjacent two connecting sections 220, so that the water flow can be discharged to the self-suction pump 100.

[0037] Referring to Figure 2In some exemplary embodiments, four detection points 212 are provided at 4m, 6m, 8m and 10m from the lower end of the ascending section 210. Three first isolation valves 410 are provided, each of which is arranged between two adjacent detection points 212 in the ascending section 210. Three second isolation valves 420 are provided, each of which is arranged in the connecting section 220 corresponding to the 4m detection point 212, the 6m detection point 212 and the 8m detection point 212.

[0038] When detecting the self-suction time of the self-suction pump 100 at a self-suction height of 4m, all the first isolation valves 410 are closed, so that the fluid can only reach the 4m detection point 212 and cannot continue to flow upward to the 6m, 8m and 10m detection points 212. The second isolation valve 420 provided on the connecting section 220 corresponding to the 4m detection point 212 is opened, and the remaining second isolation valves 420 are closed, so that the water flow can enter the connecting section 220 from the 4m detection point 212, thereby entering the descending section 230. All the third isolation valves 430 are closed, so that the water flow can pass through the descending section 230 directly to the self-suction pump 100, and the water flow entering the descending pipe cannot flow upward, thereby avoiding affecting the self-suction energy of the self-suction pump 100.

[0039] When detecting the self-suction time of the self-suction pump 100 at a self-suction height of 6m, the first isolation valve 410 between the 4m detection point 212 and the 6m detection point 212 is opened, and the remaining first isolation valves 410 are closed, so that the fluid can only reach the 6m detection point 212 and cannot continue to flow upward to the 8m and 10m detection points 212. The second isolation valve 420 provided on the connecting section 220 corresponding to the 6m detection point 212 is opened, and the remaining second isolation valves 420 are closed, so that the water flow can enter the connecting section 220 from the 6m detection point 212. The third isolation valve 430 between the 4m detection point 212 and the 6m detection point 212 is opened, and the remaining third isolation valves 430 are closed, so that the water flow can pass through the descending section 230 directly to the self-suction pump 100, and the water flow entering the descending pipe cannot flow upward, thereby avoiding affecting the self-suction energy of the self-suction pump 100.

[0040] When detecting the self-suction time of the self-suction pump 100 at a self-suction height of 10m, all the first isolation valves 410 are opened, so that the fluid reaches the 10m detection point 212. All the second isolation valves 420 are closed. All the third isolation valves 430 are opened, so that the water flow can pass through the descending section 230 directly to the self-suction pump 100.

[0041] Referring to Figure 1 and Figure 2In some embodiments, each first isolation valve 410 is arranged close to the lower detection point 212.

[0042] Since the first isolation valve 410 is arranged to prevent water from flowing upwards at the target detection point 212, arranging the first isolation valve 410 closer to the lower detection point 212 can reduce the amount of water entering the pipe between the target detection point 212 and the upper detection point 212, reduce the influence on the self-suction energy of the self-suction pump 100, and thus improve the detection accuracy of the self-suction time.

[0043] Referring to Figure 1 and Figure 2 In some embodiments, each second isolation valve 420 is arranged close to the detection point 212.

[0044] The first end of the connection section 220 is connected to the detection point 212, and the second isolation valve 420 is arranged on the connection section 220, close to the detection point 212.

[0045] When the second isolation valve 420 on the upper connection section 220 is opened to allow water to flow, the second isolation valve 420 on the lower connection section 220 needs to be closed to prevent water from entering the lower connection section 220. When the second isolation valve 420 is arranged close to the detection point 212, the second isolation valve 420 can prevent water from entering the lower connection section 220, reduce the influence on the self-suction energy of the self-suction pump 100, and thus improve the detection accuracy of the self-suction time.

[0046] Referring to Figure 1 and Figure 3 In some embodiments, the test system can further include a timer 520, a controller 530, and a plurality of fluid sensing portions 510. The timer 520 is used for timing. The plurality of fluid sensing portions 510 are arranged on the connection section 220, close to the detection point 212, to detect whether there is water flow near the detection point 212. The controller 530 is electrically connected to the timer 520 and the plurality of fluid sensing portions 510, respectively. When the self-suction pump 100 meets the self-suction time detection condition, the controller 530 controls the timer 520 to start timing. When the fluid sensing portion 510 detects that there is water flow near the detection point 212, the controller 530 controls the timer 520 to stop timing, to determine the self-suction time of the self-suction pump 100 at the detection point 212.

[0047] The fluid sensing portion 510 can detect whether there is fluid, and the fluid sensing portion 510 can be a liquid level sensor. The plurality of fluid sensing portions 510 are arranged on the connection section 220, close to the detection point 212, so that when the fluid reaches the connection section 220 connected to the target detection point 212, the fluid sensing portion 510 can respond to the presence of the fluid.

[0048] When the self-priming time detection condition is met, the controller 530 controls the timer 520 to start timing, and stops timing when the fluid sensing portion 510 detects the presence of water flow near the detection point 212, and the self-priming time is obtained by reading the time recorded on the timer 520.

[0049] Referring to Figure 1 In some embodiments, the water tank 10 is connected to the inlet of the self-priming pump 100. The test system can further include a fourth isolation valve 440, a fifth isolation valve 450, and an air exhaust valve 460. The fourth isolation valve 440 is arranged on the flow path between the water tank 10 and the self-priming pump 100. The fifth isolation valve 450 is arranged on the descending section 230 between the second end of the lowest connection section 220 and the lower end of the descending section 230. The air exhaust valve 460 is arranged on the water outlet pipe 30 to exhaust air in the self-priming pump 100. The self-priming time detection condition is that the fifth isolation valve 450 is closed, the fourth isolation valve 440 and the air exhaust valve 460 are opened, the self-priming pump 100 is started, and when the air exhaust valve 460 exhausts continuous water flow, the fourth isolation valve 440 and the air exhaust valve 460 are closed, and the fifth isolation valve 450 is opened.

[0050] The water tank 10 is further connected to the inlet of the self-priming pump 100 through a branch pipe 620, and the fourth isolation valve 440 is arranged on the branch pipe 620. The fifth isolation valve 450 is arranged on the descending section 230 between the second end of the lowest connection section 220 and the lower end of the descending section 230, that is, the fifth isolation valve 450 can be used as a total valve of the descending pipe.

[0051] Before the self-priming detection of the self-priming pump 100, the self-priming pump 100 needs to be emptied. The specific operation is that the self-priming pump 100 is started, the fifth isolation valve 450 is closed, the fourth isolation valve 440 is opened, so that the water in the water tank 10 does not pass through the measuring pipe 20 but is absorbed into the self-priming pump 100 through the branch pipe 620. When the air exhaust valve 460 arranged on the water outlet pipe 30 exhausts continuous water flow, it indicates that the air in the self-priming pump 100 is exhausted.

[0052] After the air in the self-priming pump 100 is exhausted, the fourth isolation valve 440 and the air exhaust valve 460 are closed, and the fifth isolation valve 450 is opened, at this time, the self-priming time detection condition is met, and the self-priming time detection can be performed.

[0053] Further, the test system of the self-priming pump 100 can further include a water inlet pipe 610 and a branch pipe 620. The outlet of the water inlet pipe 610 is connected to the inlet of the self-priming pump 100, and the branch pipe 620 is connected to the outlet of the water tank 10 and the inlet of the water inlet pipe 610. The lower end of the descending section 230 is connected to the inlet of the water inlet pipe 610. The fourth isolation valve 440 is arranged on the branch pipe 620.

[0054] Further, the test system of the self-priming pump 100 can further comprise a check valve 470 arranged on the inlet pipe 610 for preventing water flow from the inlet of the self-priming pump 100.

[0055] Referring to Figure 1 In some embodiments, the test system of the self-priming pump 100 can further comprise an inlet pressure detection unit 540 arranged on the inlet pipe 610 for detecting the water flow pressure on the inlet pipe 610, an outlet pressure detection unit 550 arranged on the outlet pipe 30 for detecting the water flow pressure on the outlet pipe 30, and a flow detection unit 560 arranged on the outlet pipe 30 for detecting the flow on the outlet pipe 30.

[0056] During the performance test of the water pump, the fourth isolation valve 440 is opened, the fifth isolation valve 450 is closed, the self-priming pump 100 is started, the air in the self-priming pump 100 is discharged through the air discharge valve 460, the air discharge valve 460 is closed after the air is discharged, the flow of the self-priming pump 100 is adjusted, and the flow data is collected by the flow detection unit 560, the water flow pressure on the inlet pipe 610 is collected by the inlet pressure detection unit 540, and the water flow pressure on the outlet pipe 30 is detected by the outlet pressure detection unit 550. The inlet pressure detection unit 540, the outlet pressure detection unit 550, and the flow detection unit 560 can be uploaded to the controller 530 at the same time to form a performance report.

[0057] Referring to Figure 1 In some embodiments, the test system of the self-priming pump 100 can further comprise an adjusting valve 480 arranged on the outlet pipe 30 for adjusting the flow of the self-priming pump 100.

[0058] In some embodiments, the test system of the self-priming pump 100 can further comprise a vacuum detection unit 570 arranged on the descending section 230 for detecting the vacuum degree of the descending section 230. The vacuum detection unit 570 can be a vacuum gauge.

[0059] In combination with Figure 1 and Figure 3 , the working principle of the test system of the present application will be described below through a specific embodiment.

[0060] The water tank 10 is arranged on the ground, the inlet of the branch pipe 620 is connected to the outlet of the water tank 10, and the outlet of the branch pipe 620 is provided with a three-way joint. The first opening of the three-way joint is connected to the outlet of the branch pipe 620, the second opening of the three-way joint is connected to the inlet of the inlet pipe 610, and the third opening of the three-way joint is connected to the descending section 230 of the measuring pipe 20.

[0061] The rising section 210 of the measuring pipe 20 is vertically arranged, and the lower end thereof extends into the water tank 10 below the liquid level. Two detection points 212 are arranged at 6m and 8m from the lower end of the rising section 210, respectively. Two connecting sections 220 are arranged, and the first end of each connecting section 220 is connected with the detection points 212, and the second end thereof is connected with the descending section 230. The descending section 230 is vertically arranged, and the lower end of the descending section 230 is connected with the third opening of the three-way joint.

[0062] The first end of the outlet pipe 30 is connected with the outlet of the self-priming pump 100, and the second end of the outlet pipe 30 is arranged at the water tank 10.

[0063] The first isolation valve 410 is one, and is arranged between the two detection points 212, and close to the 6m detection point 212. The second isolation valve 420 is one, and is arranged on the connecting section 220 connected with the 6m detection point 212, and close to the 6m detection point 212. The third isolation valve 430 is one, and is arranged on the descending section 230, and between the second ends of the two connecting sections 220. The fourth isolation valve 440 is arranged on the branch pipe 620. The fifth isolation valve 450 is arranged on the descending section 230, and between the second end of the connecting section 220 connected with the 6m detection point 212 and the lower end of the descending section 230. The exhaust valve 460 is arranged on the outlet pipe 30. The check valve 470 is arranged on the inlet pipe 610. The regulating valve 480 is arranged on the outlet pipe 30. The above valves can be electric or pneumatic valves controlled by the controller 530.

[0064] The fluid sensing part 510 is two, and is arranged on the two connecting sections 220, and close to the detection points 212, respectively. The inlet pressure detection part 540 is arranged on the inlet pipe 610. The outlet pressure detection part 550 is arranged on the outlet pipe 30. The fluid sensing part 510, the inlet pressure detection part 540 and the outlet pressure detection part 550 are electrically connected with the controller 530, so as to upload the collected data to the controller 530 for processing.

[0065] When the self-priming pump 100 is tested, the fourth isolation valve 440 is opened, and the fifth isolation valve 450 and the regulating valve 480 are opened. The self-priming pump 100 is started, the exhaust valve 460 is opened, and the air in the self-priming pump 100 is exhausted. After the air is exhausted, the exhaust valve 460 is closed, the regulating valve 480 is opened, and the opening degree of the regulating valve 480 is adjusted by the controller 530, so as to adjust the flow of the self-priming pump 100. The flow detection part 560 collects the flow data, the inlet pressure detection part 540 collects the water flow pressure of the inlet pipe 610, and the outlet pressure detection part 550 detects the water flow pressure of the outlet pipe 30. The inlet pressure detection part 540, the outlet pressure detection part 550 and the flow detection part 560 can be simultaneously uploaded to the controller 530, so as to form a performance report.

[0066] Further, the test of the self-priming performance of the self-priming pump 100 (6m) is performed as follows: after the water pump performance test is completed, the fourth isolation valve 440, the first isolation valve 410 and the third isolation valve 430 are closed, the fifth isolation valve 450, the second isolation valve 420 and the regulating valve 480 are opened, the test of the self-priming performance of the self-priming pump 100 at 6m is started, and the controller 530 controls the timer 520 to collect the starting time node and record it; as the liquid level gradually rises during the operation of the self-priming pump 100, the height of the liquid level, i.e., the self-priming height, can be directly observed through the scale on the rising section 210, and the self-priming height can also be compared with the actual height by reading the vacuum degree of the vacuum gauge to avoid errors. As time goes on, when the liquid level reaches the 6m detection point 212, the fluid sensing part 510 collects the signal and transmits it to the controller 530, the controller 530 controls the timer 520 to automatically collect the ending time node, and finally the time recorded by the timer 520 is the self-priming time at 6m.

[0067] Further, the test of the self-priming performance of the self-priming pump 100 (8m) is performed as follows: after the water pump performance test is completed, the fourth isolation valve 440 and the second isolation valve 420 are closed, the fifth isolation valve 450, the first isolation valve 410, the third isolation valve 430 and the regulating valve 480 are opened, the test of the self-priming performance of the self-priming pump 100 at 8m is started. The controller 530 controls the timer 520 to collect the starting time node and record it; as the liquid level gradually rises during the operation of the self-priming pump 100, the height of the liquid level, i.e., the self-priming height, can be directly observed through the scale on the rising section 210, and the self-priming height can also be compared with the actual height by reading the vacuum degree of the vacuum gauge to avoid errors. As time goes on, when the liquid level reaches the 8m detection point 212, the fluid sensing part 510 collects the signal and transmits it to the controller 530, the controller 530 controls the timer 520 to automatically collect the ending time node, and finally the time recorded by the timer 520 is the self-priming time at 8m.

[0068] It should be noted that the phrases "one embodiment", "an embodiment", "example embodiment", "some embodiments" and the like used in the specification do not necessarily refer to the same embodiment, but can refer to different embodiments. In addition, the features, structures or characteristics described in connection with one embodiment can be implemented in connection with other embodiments, whether explicitly described or not.

[0069] In general, terminology can be understood at least in part from usage in context. For example, and as used herein, the term "one or more" can be understood as including at least one, or two, or three, or four, or more, and so on, as is apparent to one of ordinary skill in the art. Likewise, "at least one of X, Y and Z" can be understood as meaning at least one X, or at least one Y, or at least one Z, or any combination thereof. Similarly, "at least one of X, Y or Z" can be understood as meaning at least one X, or at least one Y, or at least one Z, or any combination thereof.

[0070] It will be readily understood that the terms "on", "above", and "on top", as used herein, should be interpreted in the broadest context possible so that "on" means not only "directly on" but also "on with intervening features or layers therebetween", and "above" or "on top" means not only "above" or "on top" but also "above" or "on top" with no intervening features or layers therebetween (i.e., directly on).

[0071] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0072] Finally, it should be noted that the above-described embodiments are merely intended to illustrate the technical solutions of the present application, but not to limit the same; even though the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions recorded in the above embodiments, or equivalent replacements can be made to some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A test system for a self-priming pump, characterized by, The system comprises: a water tank for storing water; a measuring pipe, which comprises an ascending section, a descending section and a plurality of connecting sections, the ascending section is vertically arranged, the ascending section has a plurality of detection points, the lower end of the ascending section extends below the liquid level of the water tank, the connecting sections correspond to the detection points one by one, the first end of the connecting section is connected to the detection point, the second end of the connecting section is connected to the descending section, and the lower end of the descending section is connected to the inlet of the self-priming pump; a water outlet pipe, the first end of the water outlet pipe is connected to the outlet of the self-priming pump, and the second end of the water outlet pipe is arranged at the water tank; a control valve group, which is used to open the ascending section, one of the connecting sections and the descending section, and when the self-priming pump is started, the time of water flow reaching the connecting section is detected to determine the self-priming time of the self-priming pump at the detection point corresponding to the connecting section.

2. The test system of a self-priming pump according to claim 1, characterized in that, The control valve group further comprises: at least one first isolation valve, at least one of the first isolation valves is arranged in the ascending section, and each of the first isolation valves is located between two adjacent detection points; at least one second isolation valve, which is arranged in the connecting section one by one, except for the connecting section corresponding to the highest detection point; at least one third isolation valve, at least one of the third isolation valves is arranged in the descending section, and each of the third isolation valves is located between the second ends of two adjacent connecting sections.

3. The self-priming pump testing system according to claim 2, wherein: each of the first isolation valves is arranged close to the detection point with a lower position; and / or each of the second isolation valves is arranged close to the detection point.

4. The test system of any one of claims 1 to 3, wherein, Further comprising: a plurality of fluid sensing parts, which are arranged in the connecting sections and close to the detection points to detect whether there is water flow near the detection points; a timer for timing; a controller, which is electrically connected to the timer and the fluid sensing parts, when the self-priming pump meets the self-priming time detection condition, the controller controls the timer to start timing, when the fluid sensing part detects that there is water flow near the detection point, the controller controls the timer to stop timing to determine the self-priming time of the self-priming pump at the detection point.

5. The self-priming pump testing system according to claim 4, wherein: the water tank is connected to the inlet of the self-priming pump; the control valve group further comprises: a fourth isolation valve, which is arranged on the flow path of the water tank and the self-priming pump; a fifth isolation valve, which is arranged in the descending section and located between the second end of the lowest connecting section and the lower end of the descending section; an air exhaust valve, which is arranged in the water outlet pipe and used to exhaust air in the self-priming pump. The self-suction time detection condition is that the fifth isolation valve is closed, the fourth isolation valve and the exhaust valve are opened, and the self-suction pump is started; when the exhaust valve exhausts continuous water flow, the fourth isolation valve and the exhaust valve are closed, and the fifth isolation valve is opened.

6. The test system of a self-priming pump according to claim 5, characterized in that, Further comprising: a water inlet pipe, an outlet of the water inlet pipe being connected to an inlet of the self-suction pump; a branch pipe, the branch pipe being connected to an outlet of the water tank and an inlet of the water inlet pipe; a lower end of the descending section being connected to the inlet of the water inlet pipe; the fourth isolation valve being arranged in the branch pipe.

7. The test system of a self-priming pump according to claim 6, characterized in that, Further comprising: a check valve, the check valve being arranged on the water inlet pipe, for preventing water flow from flowing back from the inlet of the self-suction pump.

8. The test system of a self-priming pump according to claim 6, characterized in that, Further comprising: an inlet pressure detection unit, the inlet pressure detection unit being arranged on the water inlet pipe, for detecting water flow pressure on the water inlet pipe; an outlet pressure detection unit, the outlet pressure detection unit being arranged on the water outlet pipe, for detecting water flow pressure on the water outlet pipe; a flow detection unit, the flow detection unit being arranged on the water outlet pipe, for detecting flow on the water outlet pipe.

9. The test system of a self-priming pump according to claim 1, characterized in that, The control valve group further comprises: a regulating valve, the regulating valve being arranged on the water outlet pipe, for regulating flow of the self-suction pump.

10. The test system of a self-priming pump according to claim 1, characterized in that, Further comprising: a vacuum detection unit, the vacuum detection unit being arranged on the descending section, for detecting vacuum degree of the descending section.

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