Flow resistance testing device suitable for direct-acting solenoid valve

Abstract

The utility model discloses a flow resistance testing device suitable for a direct-acting solenoid valve, which belongs to the field of valve tests and comprises a pressure-bearing water tank, a testing pipeline and a collecting water tank, a water inlet of the pressure-bearing water tank is communicated with an injection pipeline, and the injection pipeline is communicated with a water source. The test pipeline is communicated with a water outlet of the pressure-bearing water tank, a pressure detection component is arranged on the test pipeline, and one side of the test pipeline is communicated with the direct-acting electromagnetic valve. The collecting water tank comprises a containing cavity, and the containing cavity is communicated with the drainage pipeline; the collecting water tank is further provided with a mass flow detection component. The utility model provides a flow resistance testing device suitable for a direct-acting solenoid valve, which can adapt to direct-acting solenoid valves with different performances, and can realize accurate testing of flow resistance of the direct-acting solenoid valves with different performances. The flow resistance test cost of the direct-acting solenoid valve can be obviously reduced, meanwhile, the flow resistance test can be carried out on the direct-acting solenoid valve at any time, and the flow resistance detection efficiency of the direct-acting solenoid valve is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve testing, and in particular relates to a flow resistance testing device suitable for a direct-acting electromagnetic valve. Background Art

[0002] Solenoid valve is one of the most widely used actuators in automatic control systems. It is widely used in various mechanical equipment and control systems, especially in fluid control systems. The performance of solenoid valve has an important impact on the safety and automation of the entire system.

[0003] After manufacturing, the solenoid valve usually needs to be tested for flow resistance, especially the direct-acting solenoid valve with fluid attitude control. After manufacturing, the direct-acting solenoid valve needs to be accurately tested for fluid flow resistance to ensure that each direct-acting solenoid valve prepared and processed has a relatively accurate flow resistance value.

[0004] In the prior art, direct-acting solenoid valves used to test liquid posture usually require the use of dedicated flow resistance testing equipment, which is usually expensive and has a long customization cycle. For direct-acting solenoid valves with different performances required for research and development products, the use of existing dedicated flow resistance testing equipment usually has a long customization cycle, which in turn leads to high testing costs and long testing cycles. Utility Model Content

[0005] In response to one or more of the above-mentioned defects or improvement needs of the prior art, the utility model provides a flow resistance testing device suitable for direct-acting solenoid valves, which can adapt to direct-acting solenoid valves with different performances. It can not only realize accurate testing of the flow resistance of direct-acting solenoid valves with different performances, but also can significantly reduce the cost of flow resistance testing of direct-acting solenoid valves while ensuring that the flow resistance of direct-acting solenoid valves can be tested at any time, thereby improving the efficiency of flow resistance detection of direct-acting solenoid valves.

[0006] To achieve the above object, the utility model provides a flow resistance testing device suitable for a direct-acting solenoid valve, which is used for testing the flow resistance of the direct-acting solenoid valve, and includes:

[0007] A pressure water tank, wherein the water inlet of the pressure water tank is connected to an injection pipe, the injection pipe is connected to a water source, and an injection valve is arranged on the injection pipe;

[0008] A test pipe, the test pipe is connected to the water outlet of the pressure water tank, at least one pressure detection component is arranged on the test pipe, the side of the test pipe away from the pressure water tank is connected to the direct-acting solenoid valve; the side of the direct-acting solenoid valve away from the test pipe is connected to a drainage pipe;

[0009] A water collecting tank, the water collecting tank comprising at least one accommodating cavity, the accommodating cavity being connected to a drainage pipe, and the accommodating cavity being connected to the atmosphere; the water collecting tank is also provided with a mass flow detection component.

[0010] As a further preferred embodiment of the present invention, the height of the water outlet of the pressure water tank is greater than the height of the top end surface of the accommodating cavity.

[0011] As a further preferred embodiment of the present invention, the mass flow detection component includes a timer and an electronic scale, and the electronic scale is arranged under the bottom end surface of the collection water tank.

[0012] As a further preferred embodiment of the present invention, at least one filter is provided on the test pipe.

[0013] As a further preferred embodiment of the present invention, it further comprises a water inlet pipe and an air inlet pipe;

[0014] The water inlet pipe is connected to the water source, and the air inlet pipe is connected to the atmosphere; and both the water inlet pipe and the air inlet pipe are connected to the injection pipe.

[0015] As a further preferred embodiment of the present invention, a liquid control valve is provided on the water inlet pipe, and a gas control valve is provided on the air inlet pipe.

[0016] As a further preferred embodiment of the present invention, the liquid control valve and / or the gas control valve is a solenoid valve or a stop valve.

[0017] As a further preferred embodiment of the present invention, both the liquid control valve and the gas control valve are solenoid valves, and the solenoid valves are connected to a timing switch for controlling the opening and closing of the solenoid valves.

[0018] As a further preferred embodiment of the present invention, the timing switch is a knob-type timing switch.

[0019] As a further preferred embodiment of the present invention, a connecting flange is provided between the direct-acting solenoid valve and the test pipeline.

[0020] In general, compared with the prior art, the above technical solutions conceived by the utility model have the following beneficial effects:

[0021] (1) The utility model is suitable for a flow resistance testing device for a direct-acting solenoid valve, comprising a pressure water tank, a test pipe and a collecting water tank. The water inlet of the pressure water tank is connected to the injection pipe, and the injection pipe is connected to a water source. The test pipe is connected to the water outlet of the pressure water tank, a pressure detection component is provided on the test pipe, and one side of the test pipe is connected to the direct-acting solenoid valve. The collecting water tank comprises a receiving cavity, which is connected to a drainage pipe; the collecting water tank is also provided with a mass flow detection component. The flow resistance testing device can adapt to direct-acting solenoid valves of different performances, and can not only realize accurate testing of the flow resistance of direct-acting solenoid valves of different performances, but also can significantly reduce the cost of the flow resistance testing of the direct-acting solenoid valve while ensuring that the flow resistance test of the direct-acting solenoid valve can be performed at any time, thereby improving the flow resistance detection efficiency of the direct-acting solenoid valve.

[0022] (2) The flow resistance test device for a direct-acting solenoid valve of the utility model is applicable to multiple detections of liquid water flowing through the direct-acting solenoid valve by setting at least one filter on the test pipe and the water inlet pipe, thereby preventing the impurities in the liquid water from affecting the direct-acting solenoid valve. At the same time, the pressure of the liquid water in the test pipe is accurately collected by correspondingly setting multiple pressure gauges on the test pipe, further improving the accuracy of the flow resistance test of the direct-acting solenoid valve.

[0023] (3) The flow resistance test device suitable for a direct-acting solenoid valve of the utility model has a simple structure, convenient operation and accurate detection. It adopts a water inlet pipe with a water inlet stop valve and an air inlet stop valve respectively connected to the injection pipe on the pressure water tank, so that the pressure water tank can stably realize the injection and discharge of liquid water in combination with different working states, so as to provide a stable liquid water fluid for the flow resistance test of the direct-acting solenoid valve, which is used to complete the flow resistance test of the direct-acting solenoid valve. At the same time, combined with the water tank stop valve set on the test pipe, accurate control of the flow resistance test of the direct-acting solenoid valve is achieved. In addition, combined with the connecting flanges set on both sides of the direct-acting solenoid valve that connect the test pipe and the discharge pipe, not only can the direct-acting solenoid valve be conveniently disassembled and assembled with the test pipe and the discharge pipe respectively, but also the liquid water flowing in the test pipe can be prevented from flowing out from the joints on both sides of the direct-acting solenoid valve, further improving the accuracy of the flow resistance detection of the direct-acting solenoid valve, and having good promotion value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a flow resistance testing device suitable for a direct-acting solenoid valve in an embodiment of the utility model.

[0025] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0026] 1. Water inlet pipe; 2. Liquid stop valve; 3. Air inlet pipe; 4. Gas stop valve; 5. Tee joint; 6. Injection pipe; 7. Pressure water tank; 8. Water tank stop valve; 9. Test pipe; 10. Filter; 11. Pressure gauge; 12. Direct-acting solenoid valve; 13. Collection tank; 14. Electronic scale; 15. Discharge pipe. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Example:

[0033] See also Figure 1 The flow resistance testing device suitable for direct-acting solenoid valves in the preferred embodiment of the utility model can adapt to direct-acting solenoid valves 12 with different performances. It can not only realize accurate testing of the flow resistance of direct-acting solenoid valves 12 with different performances, but also can significantly reduce the cost of flow resistance testing of the direct-acting solenoid valves 12 while ensuring that the flow resistance test of the direct-acting solenoid valves 12 can be performed at any time, thereby improving the efficiency of flow resistance detection of the direct-acting solenoid valves 12.

[0034] Specifically, in the preferred embodiment of the present application, the flow resistance test device for the direct-acting solenoid valve includes a pressure water tank 7, a test pipe 9 and a collection water tank 13. The pressure water tank 7 is used to store the liquid water required for measuring the flow resistance of the automatic solenoid valve. Accordingly, a water inlet and a water outlet are provided on the pressure water tank 7. The water inlet is connected to the injection pipe 6, and the injection pipe 6 is connected to the water source, so that the liquid water in the water source can flow into the pressure water tank 7 through the injection pipe 6, ensuring the stable operation of the flow resistance detection of the direct-acting solenoid valve 12. At the same time, an injection valve is provided on the injection pipe 6, so as to control the start and end of the process of liquid water flowing into the collection water tank 13 through the injection valve. The test pipe 9 is connected to the water outlet of the pressure water tank 7, so that the liquid water contained in the pressure water tank 7 can flow into the test pipe 9. At least one pressure detection component is also provided on the test pipe 9, which is used to detect the pressure of the liquid water in the test pipe 9 in real time. Furthermore, the side of the test pipe 9 facing away from the pressure water tank 7 is connected to the direct-acting solenoid valve 12 to be tested, so that the liquid water in the test pipe 9 can flow through the direct-acting solenoid valve 12 .

[0035] Correspondingly, a drainage pipe is connected to the side of the direct-acting solenoid valve 12 to be tested away from the test pipe 9, so as to drain the liquid water flowing through the direct-acting solenoid valve 12 to be tested. The receiving water tank includes at least one receiving cavity, which is connected to the drainage pipe, and the receiving space is also connected to the outside atmosphere, so that the pressure on one side of the drainage pipe is the standard pressure of the atmosphere, so as to accurately confirm the flow resistance of the direct-acting solenoid valve 12 to be tested.

[0036] At the same time, the collecting water tank 13 is also provided with a mass flow detection component for detecting the mass flow rate flowing through the direct-acting solenoid valve 12 to be tested, and then combined with at least one pressure detection component arranged on the test pipe 9, it can accurately determine the flow resistance of the direct-acting solenoid valve 12 to be tested under the current mass flow rate, and then ensure the accuracy of the flow resistance test of the direct-acting solenoid valve 12 while also ensuring that the flow resistance testing device can be easily built, thereby improving the applicability of the flow resistance testing device.

[0037] Further, in a preferred embodiment of the present application, the flow resistance testing device further includes a water inlet channel and an air inlet channel, the water inlet pipe 1 is connected to a water source, and correspondingly, the air inlet pipe 3 is connected to the atmosphere, and the water inlet pipe 1 and the air inlet pipe 3 are both connected to the injection pipe 6. Preferably, a three-way joint 5 is provided between the water inlet pipe 1, the air inlet pipe 3 and the injection pipe 6 to achieve the connection between the three. In actual use, during the process of replenishing liquid water in the pressure water tank 7, liquid water can be continuously introduced into the injection pipe 6 through the water inlet channel. During the process of discharging liquid water from the pressure water tank 7 to detect the flow resistance of the solenoid valve to be tested, the pressure water tank 7 and the atmosphere can be connected through the air inlet pipe 3, so that the liquid water in the pressure water tank 7 can be discharged into the test pipe 9. Preferably, at least one filter 10 is also provided on the water inlet pipe 1 for filtering the liquid water flowing into the pressure water tank 7.

[0038] Further preferably, in the preferred embodiment of the present application, a liquid control valve is provided on the water inlet channel to control the circulation of liquid water in the water inlet channel, and correspondingly, a gas control valve is provided on the air inlet pipe 3 to control the circulation of gas cutoff in the air inlet pipe 3. In the process of replenishing liquid water in the pressure water tank 7, the gas control valve is controlled to close the air inlet pipe 3, and the liquid control valve is controlled to open the water inlet channel, so that the liquid water in the water source can continue to flow into the pressure water tank 7 through the water inlet pipe 1. In the process of the pressure water tank 7 discharging liquid water to the test pipe 9, the water inlet channel is cut off by controlling the liquid control valve, and the air inlet control valve is controlled to open the air inlet pipe 3, so that the air pressure in the pressure water tank 7 can be the same as the atmospheric pressure, so that the liquid water in the pressure water tank 7 can be stably discharged into the test pipe 9. Preferably, the liquid control valve is a liquid stop valve 2, and correspondingly, the gas control valve is a gas stop valve 4. In actual use, the accurate operation of the liquid stop valve 2 and the gas stop valve 4 is completed by manual adjustment.

[0039] Of course, the liquid control valve and the gas control valve are not limited to the above-mentioned structural form. In another preferred embodiment of the present application, the liquid control valve and the gas control valve are both solenoid valves. Preferably, the corresponding solenoid valve is provided with a timing switch, so as to stably control the total amount of liquid water flowing into the pressure water tank 7 and the total amount of liquid water flowing out of the pressure water tank 7 in the water inlet pipe 1 and the air inlet pipe 3 through the timing switch, thereby facilitating the determination of the mass flow rate flowing through the solenoid valve to be tested. That is, during the operation of the timing switch, the time of injection or discharge of the pressure water tank 7 can be determined. When the diameters of the water inlet pipe 1 and the air inlet pipe 3 are constant, the content of liquid water in the pressure water tank 7 and the content of liquid water discharged from the pressure water tank 7 can be further determined. Preferably, the timing switch is a knob-type timing switch or a PLC-controlled timing switch, wherein the PLC-controlled timing switch is an existing conventional product.

[0040] Furthermore, in a preferred embodiment of the present application, the pressure water tank 7 is an overall box-shaped structure, and at least one observation window is arranged on the outer wall surface of the box body of the pressure water tank 7. Preferably, a ruler is arranged on each observation window, so that the operator can intuitively judge the content of liquid water in the pressure water tank 7 through the observation window and the ruler, thereby facilitating the determination of the mass flow rate flowing through the test pipe 9.

[0041] Further preferably, in the preferred embodiment of the present application, in order to enable the liquid water contained in the pressure water tank 7 to flow autonomously through the direct-acting solenoid valve 12 to be detected under the action of weight and flow into the accommodating cavity of the collecting water tank 13, the height of the water outlet of the pressure water tank 7 is greater than the height of the top surface of the accommodating cavity.

[0042] In more detail, in the preferred embodiment of the present application, an electronic scale 14 is also provided below the bottom end surface of the pressure water tank 7 to facilitate determination of the weight of the liquid water in the pressure water tank 7 .

[0043] Further, in a preferred embodiment of the present application, a plurality of pressure detection components are arranged at intervals on the test pipe 9. In actual use, the pressure in the test pipe 9 is determined by taking the average value of the detection data of the plurality of pressure detection components. Preferably, the pressure detection component is a pressure gauge 11. Further preferably, a relative pressure gauge 11 disk through which the direct-acting solenoid valve 12 flows is arranged on the dial of the pressure gauge 11. Further preferably, a flow resistance dial of the direct-acting solenoid valve 12 corresponding to the relative pressure gauge 11 disk is also arranged on the pressure gauge 11 disk.

[0044] Further preferably, in the preferred embodiment of the present application, at least one filter 10 is provided on the test pipe 9 to facilitate secondary filtration of the liquid water flowing through the test pipe 9 to prevent debris in the liquid water from affecting the direct-acting solenoid valve 12 .

[0045] In more detail, in a preferred embodiment of the present application, a water tank stop valve 8 is provided on the test pipe 9 so as to stably control the flow of liquid water in the test pipe 9 through the water tank stop valve 8, thereby preventing liquid water from flowing out of the pressure water tank 7 through the water tank stop valve 8 before the flow resistance test is started.

[0046] Furthermore, in a preferred embodiment of the present application, one end of the test pipe 9 is connected to the pressure water tank 7, and correspondingly, the other end of the test pipe 9 is connected to the direct-acting solenoid valve 12 to be tested. Preferably, a connecting flange is provided between the test pipe 9 and the direct-acting solenoid valve 12 to be tested, so as to realize a stable and detachable connection between the test pipe 9 and the direct-acting solenoid valve 12, which not only facilitates the convenient disassembly and assembly of the direct-acting solenoid valve 12 during the test process, but also avoids liquid leakage at the connection position between the direct-acting solenoid valve 12 and the test pipe 9.

[0047] Further preferably, in the preferred embodiment of the present application, at least one layer of sealing ring is also provided on the connecting flange between the direct-acting solenoid valve 12 and the test pipe 9 to further improve the sealing performance between the direct-acting solenoid valve 12 and the test pipe 9.

[0048] In more detail, in a preferred embodiment of the present application, the end of the direct-acting solenoid valve 12 facing away from the test pipe 9 is connected to the exhaust pipe 15, and accordingly, a connecting flange is provided between the direct-acting solenoid valve 12 and the exhaust pipe 15 to achieve a detachable connection between the exhaust pipe 15 and the direct-acting solenoid valve 12.

[0049] Furthermore, in a preferred embodiment of the present application, the mass flow detection component further includes a timer and an electronic scale 14, wherein the electronic scale 14 is disposed between the bottom end surface of the water collection tank 13, so as to accurately determine the weight of the liquid water flowing through the direct-acting solenoid valve 12. And in combination with the timer, the mass flow of the direct-acting solenoid valve 12 can be accurately calculated.

[0050] Further preferably, in the preferred embodiment of the present application, the timer is a stopwatch.

[0051] The flow resistance test device for a direct-acting solenoid valve in the utility model has a simple structure, convenient operation, and accurate detection. It uses a water inlet pipe 1 with a water inlet stop valve and an air inlet pipe 3 with an air inlet stop valve respectively connected to an injection pipe 6 on a pressure water tank 7, so that the pressure water tank 7 can stably realize the injection and discharge of liquid water in combination with different working states, so as to provide a stable liquid water fluid for the flow resistance test of the direct-acting solenoid valve 12, and is used to complete the flow resistance test of the direct-acting solenoid valve 12. At the same time, combined with the water tank stop valve 8 set on the test pipe 9, accurate control of the flow resistance test of the direct-acting solenoid valve 12 is achieved. In addition, combined with the connecting flanges arranged on both sides of the direct-acting solenoid valve 12 connecting the test pipe 9 and the discharge pipe 15, not only can the direct-acting solenoid valve 12 be conveniently disassembled and assembled with the test pipe 9 and the discharge pipe 15 respectively, but it can also prevent the liquid water flowing in the test pipe 9 from flowing out from the joints on both sides of the direct-acting solenoid valve 12, thereby further improving the accuracy of the flow resistance detection of the direct-acting solenoid valve 12, and having good promotion value and application prospects.

[0052] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flow resistance test device suitable for a direct-acting solenoid valve, used for testing the flow resistance of a direct-acting solenoid valve, characterized in that: include: A pressure water tank, wherein the water inlet of the pressure water tank is connected to an injection pipe, the injection pipe is connected to a water source, and an injection valve is arranged on the injection pipe; A test pipe, the test pipe is connected to the water outlet of the pressure water tank, at least one pressure detection component is arranged on the test pipe, the side of the test pipe away from the pressure water tank is connected to the direct-acting solenoid valve; the side of the direct-acting solenoid valve away from the test pipe is connected to a drainage pipe; A water collecting tank, the water collecting tank comprising at least one accommodating cavity, the accommodating cavity being connected to a drainage pipe, and the accommodating cavity being connected to the atmosphere; the water collecting tank is also provided with a mass flow detection component.

2. The flow resistance testing device for a direct-acting solenoid valve according to claim 1, wherein: The height of the water outlet of the pressure water tank is greater than the height of the top surface of the accommodating cavity.

3. The flow resistance testing device for a direct-acting solenoid valve according to claim 2, wherein: The mass flow detection component comprises a timer and an electronic scale, and the electronic scale is arranged below the bottom end surface of the collection water tank.

4. The flow resistance testing device for a direct-acting solenoid valve according to any one of claims 1 to 3, wherein: At least one filter is arranged on the test pipe.

5. The flow resistance testing device for a direct-acting solenoid valve according to any one of claims 1 to 3, wherein: It also includes water inlet pipes and air inlet pipes; The water inlet pipe is connected to the water source, and the air inlet pipe is connected to the atmosphere; and both the water inlet pipe and the air inlet pipe are connected to the injection pipe.

6. The flow resistance testing device for a direct-acting solenoid valve according to claim 5, wherein: The water inlet pipeline is provided with a liquid control valve, and the air inlet pipeline is provided with a gas control valve.

7. The flow resistance testing device for a direct-acting solenoid valve according to claim 6, wherein: The liquid control valve and / or the gas control valve is a solenoid valve or a stop valve.

8. The flow resistance testing device for a direct-acting solenoid valve according to claim 7, wherein: The liquid control valve and the gas control valve are both solenoid valves, and the solenoid valves are connected to a timing switch for controlling the opening and closing of the solenoid valves.

9. The flow resistance testing device for a direct-acting solenoid valve according to claim 8, wherein: The timing switch is a knob type timing switch.

10. The flow resistance testing device for a direct-acting solenoid valve according to any one of claims 1 to 3 and 6 to 9, wherein: A connecting flange is arranged between the direct-acting solenoid valve and the test pipeline.

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