Valve body internal leakage detection device

Abstract

The utility model provides a valve body internal leakage detection device, and relates to the technical field of valve body detection. The utility model provides a valve body internal leakage detection device which comprises a liquid conveying device, a connecting pipe set, a collecting container, a detection assembly and a control unit. The connecting pipe set comprises a first connecting pipe, a second connecting pipe and a third connecting pipe, the liquid conveying device is communicated with the first end of the first connecting pipe, the second end of the first connecting pipe is communicated with an inlet of a to-be-tested valve body, one end of the second connecting pipe is communicated with a first outlet of the to-be-tested valve body, and the other end of the second connecting pipe is communicated with a second outlet of the to-be-tested valve body. The first end of the third connecting pipe is configured to be communicated with the second outlet of the valve body to be tested, and the second end of the third connecting pipe is communicated with the collecting container; the detection assembly comprises a quality detection unit, the quality detection unit is used for measuring the quality of the liquid in the collection container, and the control unit is electrically connected to the quality detection unit. The utility model provides a valve body internal leakage detection device which can improve the valve body internal leakage detection precision.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body detection, in particular to a valve body leakage detection device. Background Art

[0002] The valve body needs to be tested for internal leakage before use to ensure the reliability of the valve body.

[0003] At present, in the valve body leakage test, the leakage volume is generally measured in the range of 5ml to 100ml. However, since the sample may fail during the test, the leakage volume may reach several liters. At this time, if a milliliter-level small-range flow meter is used, the flow meter range may easily exceed after the sample fails, and the specific leakage value cannot be known. If a large-range flow meter is used, the test accuracy is difficult to meet the requirements.

[0004] Therefore, how to improve the accuracy of valve body leakage detection is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0005] In order to solve at least one of the problems mentioned in the background technology, the utility model provides a valve body internal leakage detection device, which can improve the accuracy of valve body internal leakage detection.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a valve body internal leakage detection device, including an infusion device, a connecting tube set, a collection container, a detection component and a control unit;

[0008] The connecting tube set includes a first connecting tube, a second connecting tube and a third connecting tube, the infusion device is connected to the first end of the first connecting tube to inject liquid of a preset density into the first connecting tube, the second end of the first connecting tube is configured to be connected to the inlet of the valve body to be tested, one end of the second connecting tube is configured to be connected to the first outlet of the valve body to be tested, the first end of the third connecting tube is configured to be connected to the second outlet of the valve body to be tested, and the second end of the third connecting tube is connected to the collecting container to collect the liquid leaked in the internal leakage test of the valve body to be tested through the collecting container;

[0009] The detection component includes a mass detection unit, which is used to measure the mass of the liquid in the collection container. The control unit is electrically connected to the valve body to be tested and the mass detection unit. The control unit is used to control the movement of the valve body to be tested, and calculate the volume of fluid leaked in the internal leakage test of the valve body to be tested based on the measurement results detected by the mass detection unit.

[0010] As an optional embodiment, it also includes a valve group, the valve group includes a regulating valve, the detection component includes a pressure gauge, the regulating valve and the pressure gauge are both connected to the first connecting pipe, the regulating valve is used to adjust the pressure of the liquid flowing through the first connecting pipe, and the regulating valve is electrically connected to the control unit.

[0011] As an optional embodiment, the valve group also includes a pressure reducing valve arranged on the first connecting pipe, and the pressure reducing valve, the regulating valve and the pressure gauge are arranged in sequence along the direction from the first end to the second end of the first connecting pipe, and the pressure reducing valve is electrically connected to the control unit.

[0012] As an optional embodiment, the valve group further includes a one-way valve disposed on the first connecting pipe, the one-way valve is located between the pressure gauge and the second end of the first connecting pipe, and the one-way valve is conductive toward the second end of the first connecting pipe.

[0013] As an optional implementation, the valve group further includes a first stop valve, the first stop valve is arranged on the third connecting pipe, and the first stop valve is electrically connected to the control unit.

[0014] As an optional embodiment, the valve group also includes a second stop valve and a third stop valve, the second stop valve is arranged on the second connecting pipe, the third stop valve is arranged on the first connecting pipe, the third stop valve is located between the regulating valve and the first end of the first connecting pipe, and the second stop valve and the third stop valve are both electrically connected to the control unit.

[0015] As an optional implementation, the detection component further includes a flow meter disposed on the first connecting pipe, and the flow meter is used to measure the flow rate of the liquid flowing through the first connecting pipe.

[0016] As an optional embodiment, the detection component also includes a liquid level sensor, which is arranged in the collection container. The liquid level sensor and the infusion device are electrically connected to the control unit, and the control unit is configured to control the infusion device to stop infusion when the liquid level sensor detects liquid.

[0017] As an optional implementation, it further includes an alarm, which is electrically connected to the control unit. The control unit is configured to control the alarm to sound an alarm when the liquid level sensor detects liquid.

[0018] As an optional implementation, a display is also included, and the quality detection unit, the pressure meter, the flow meter and the control unit are all electrically connected to the display.

[0019] The valve body leakage detection device provided by the utility model comprises an infusion device, a connecting tube group, a collecting container, a detection component and a control unit; the connecting tube group comprises a first connecting tube, a second connecting tube and a third connecting tube, the infusion device is connected to the first end of the first connecting tube to inject a liquid of a preset density into the first connecting tube, the second end of the first connecting tube is configured to be connected to the inlet of the valve body to be tested, one end of the second connecting tube is configured to be connected to the first outlet of the valve body to be tested, the first end of the third connecting tube is configured to be connected to the second outlet of the valve body to be tested, and the second end of the third connecting tube is connected to the collecting container to collect the liquid leaked in the valve body leakage test to be tested through the collecting container; the detection component comprises a quality detection unit, the quality detection unit is used to measure the quality of the liquid in the collecting container, the control unit is electrically connected to the valve body to be tested and the quality detection unit, the control unit is used to control the action of the valve body to be tested, and calculate the volume of the fluid leaked in the valve body leakage test to be tested according to the measurement result detected by the quality detection unit. The valve body leakage detection device provided by the utility model collects the liquid leaking from the valve body to be tested into a collecting container, measures the mass of the liquid in the collecting container by a mass detection unit, and then uses the relationship between mass, density and volume to indirectly calculate the volume of the leaking liquid by a control unit. Through this measurement method, the problem that small-range flow meters in the prior art are prone to being unable to detect valve body leakage values ​​due to over-range, and the problem of insufficient detection accuracy of large-range flow meters can be avoided, thereby improving the accuracy of valve body leakage detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of the first structure of a valve body leakage detection device provided by an embodiment of the utility model;

[0022] Figure 2 A second structural schematic diagram of the valve body internal leakage detection device provided in an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 100-valve body internal leakage detection device;

[0025] 110- Infusion equipment;

[0026] 120-connecting pipe group;

[0027] 121-first connecting pipe;

[0028] 122- second connecting pipe;

[0029] 123- third connecting pipe;

[0030] 130 - collection container;

[0031] 140-Detection component;

[0032] 141-Quality inspection unit;

[0033] 142-pressure gauge;

[0034] 143-Flow meter;

[0035] 144-Liquid level sensor;

[0036] 150-control unit;

[0037] 160-valve group;

[0038] 161- regulating valve;

[0039] 162-pressure reducing valve;

[0040] 163- one-way valve;

[0041] 164-first stop valve;

[0042] 165- second stop valve;

[0043] 166-third stop valve;

[0044] 170- alarm;

[0045] 200-Valve body. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In the application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0048] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0049] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0050] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0051] When testing the internal leakage of the valve body, if a small-range flow meter of milliliters is used, it is easy to exceed the flow meter range after the sample fails, and the specific leakage value cannot be known; if a large-range flow meter is used, the test accuracy is difficult to meet the requirements. In view of this, the utility model provides a valve body leakage detection device 100, which can collect the liquid leaking from the valve body 200 to be tested into a collection container 130, and measure the mass of the liquid in the collection container 130 through a mass detection unit 141, and then use the relationship between mass, density and volume to indirectly calculate the volume of the leaked liquid through the control unit 150, thereby improving the accuracy of the internal leakage detection of the valve body 200.

[0052] You can refer to Figure 1 and Figure 2The embodiment of the utility model provides a valve body internal leakage detection device 100, including an infusion device 110, a connecting tube group 120, a collecting container 130, a detection component 140 and a control unit 150, the connecting tube group 120 includes a first connecting tube 121, a second connecting tube 122 and a third connecting tube 123, the infusion device 110 is connected to the first end of the first connecting tube 121 to inject a liquid of a preset density into the first connecting tube 121, the second end of the first connecting tube 121 is configured to be connected to the inlet of the valve body 200 to be tested, one end of the second connecting tube 122 is configured to be connected to the first outlet of the valve body 200 to be tested, and the third connecting tube 123 is configured to be connected to the first outlet of the valve body 200 to be tested. The first end of the third connecting pipe 123 is configured to be connected to the second outlet of the valve body 200 to be tested, and the second end of the third connecting pipe 123 is connected to the collecting container 130 to collect the liquid leaked in the internal leakage test of the valve body 200 to be tested through the collecting container 130. The detection component 140 includes a quality detection unit 141, and the quality detection unit 141 is used to measure the quality of the liquid in the collecting container 130. The control unit 150 is electrically connected to the valve body 200 to be tested and the quality detection unit 141. The control unit 150 is used to control the action of the valve body 200 to be tested, and calculate the volume of the fluid leaked in the internal leakage test of the valve body 200 to be tested according to the measurement result detected by the quality detection unit 141.

[0053] The valve body internal leakage detection device 100 provided by the embodiment of the utility model collects the liquid leaked from the valve body 200 to be tested into the collecting container 130, and measures the mass of the liquid in the collecting container 130 through the mass detection unit 141, and then uses the relationship between mass, density and volume to indirectly calculate the volume of the leaked liquid through the control unit 150. Through this measurement method, the problem of the small-range flow meter 143 in the prior art being unable to detect the leakage value of the valve body 200 due to over-range and the problem of insufficient detection accuracy of the large-range flow meter 143 can be avoided, thereby improving the accuracy of the internal leakage detection of the valve body 200.

[0054] In the above embodiment, a valve group 160 may also be included, the valve group 160 includes a regulating valve 161, the detection component 140 includes a pressure gauge 142, the regulating valve 161 and the pressure gauge 142 are both connected to the first connecting pipe 121, the regulating valve 161 is used to adjust the pressure of the liquid flowing through the first connecting pipe 121, the regulating valve 161 is electrically connected to the control unit 150, the regulating valve 161 can adjust the pressure of the liquid flowing through the first connecting pipe 121, so as to perform an internal leakage test on the valve body 200 under different pressures, thereby further improving the test accuracy, wherein the regulating valve 161 can be controlled by the control unit 150 at the rear end, and the pressure gauge 142 can display the current fluid pressure in the first connecting pipe 121 in real time.

[0055] In the above embodiment, the valve group 160 may further include a pressure reducing valve 162 disposed on the first connecting pipe 121. In the direction from the first end of the first connecting pipe 121 to the second end of the first connecting pipe 121, the pressure reducing valve 162, the regulating valve 161 and the pressure gauge 142 are sequentially disposed, and the pressure reducing valve 162 is electrically connected to the control unit 150. The pressure reducing valve 162 can reduce the liquid pressure in the pipeline to a level slightly greater than the target liquid pressure, and then fine-tune the pressure through the regulating valve 161, so that the liquid pressure reaches the target liquid pressure. This method of regulating the liquid pressure is not only more accurate, but also helps to protect the regulating valve 161 and prevent the regulating valve 161 from being subjected to excessive pressure.

[0056] In the above embodiment, the valve group 160 may further include a one-way valve 163 disposed on the first connecting pipe 121, the one-way valve 163 is located between the pressure gauge 142 and the second end of the first connecting pipe 121, and the one-way valve 163 is conducted toward the second end of the first connecting pipe 121. The one-way valve 163 can prevent the liquid from flowing back, thereby improving the stability of the flow of the liquid in the pipeline.

[0057] In the above embodiment, the valve group 160 may further include a first stop valve 164, which is disposed on the third connecting pipe 123 and is electrically connected to the control unit 150. The on-off of the third connecting pipe 123 can be controlled by the first stop valve 164. On the one hand, the internal leakage detection process can be controlled more flexibly. On the other hand, in the initial stage of the test, the flow of the liquid in the pipeline may be unstable. At this time, if the liquid leaked from the valve body 200 is collected, the detection structure may be inaccurate. The first stop valve 164 can be closed to suspend the collection of the liquid leaked from the valve body 200. When the flow of the liquid in the pipeline is stable, the first stop valve 164 can be opened to start collecting the leaked fluid, thereby further improving the detection accuracy.

[0058] In the above embodiment, the valve group 160 may further include a second stop valve 165 and a third stop valve 166, the second stop valve 165 is provided on the second connecting pipe 122, the third stop valve 166 is provided on the first connecting pipe 121, the third stop valve 166 is located between the regulating valve 161 and the first end of the first connecting pipe 121, and the second stop valve 165 and the third stop valve 166 are both electrically connected to the control unit 150. The second stop valve 165 and the third stop valve 166 can control the on-off of the second connecting pipe 122 and the first connecting pipe 121, thereby making the process of the internal leakage test more flexible and convenient.

[0059] In the above embodiment, the detection assembly 140 may further include a flow meter 143 disposed on the first connecting pipe 121, and the flow meter 143 is used to measure the flow rate of the liquid flowing through the first connecting pipe 121. It can be understood that the flow rate measured by the flow meter 143 is the total flow rate flowing through the first connecting pipe 121, and the flow rate of the liquid leaked in the internal leakage test of the valve body 200 can be compared with the total flow rate to obtain the proportion of the leakage amount, thereby further obtaining the degree of the internal leakage of the valve body 200.

[0060] In the above embodiment, the detection component 140 may further include a liquid level sensor 144, which is disposed in the collection container 130. The liquid level sensor 144 and the infusion device 110 are both electrically connected to the control unit 150, and the control unit 150 is configured to control the infusion device 110 to stop infusion when the liquid level sensor 144 detects liquid. It can be understood that when the liquid in the collection container 130 rises to the liquid level sensor 144, the liquid level sensor 144 is triggered, and a trigger signal can be sent to the control unit 150, and the control unit 150 automatically controls the infusion device 110 to stop infusion, thereby preventing the liquid from overflowing the collection container 130. In addition, in other test methods, when the control unit 150 receives a signal from the liquid level sensor 144, the control unit 150 can first control the first stop valve 164 to be disconnected, and then control the infusion device 110 to stop infusion, so that the liquid in the pipeline can be prevented from continuing to leak from the valve body 200 to the collection container 130 after the infusion device 110 stops infusion.

[0061] In the above embodiment, an alarm 170 may also be included. The alarm 170 is electrically connected to the control unit 150. The control unit 150 is configured to control the alarm 170 to sound an alarm when the liquid level sensor 144 detects liquid. The alarm 170 may be set at a position where the staff can easily hear it. The alarm 170 may remind the staff that the test is completed, so that the test valve body 200 can be replaced in time, thereby improving the test efficiency.

[0062] The above embodiment may also include a display, and the quality detection unit 141, the pressure gauge 142, the flow meter 143 and the control unit 150 are all electrically connected to the display. The quality and volume of the liquid collected by the collection container 130, and the liquid pressure and flow in the first connecting pipe 121 can be displayed on the display in real time for more intuitive observation.

[0063] In order to facilitate those skilled in the art to understand the solution of the embodiment of the present application, a valve body 200 internal leakage test process is listed below:

[0064] During the test, the valve body 200 to be tested can be Figure 1 or Figure 2The connection is performed in the manner shown. Specifically, the second end of the first connecting tube 121 can be connected to the inlet of the valve body 200 to be tested, one end of the second connecting tube 122 can be connected to the first outlet of the valve body 200 to be tested, and the first end of the third connecting tube 123 can be connected to the second outlet of the valve body 200 to be tested. The inlet and the first outlet of the valve body 200 to be tested can be controlled to be connected, and the inlet and the second outlet of the valve body 200 to be tested can be controlled to be disconnected. The pressure reducing valve 162 is controlled by the control unit 150 to control the reading of the pressure gauge 142 to be slightly greater than the target pressure value, and the regulating valve 161 is opened to make the reading of the pressure gauge 142 the target pressure value, and wait until the liquid flows smoothly (there is no fluctuation in the readings of the pressure gauge 142 and the flow meter 143, and there are no bubbles in the pipeline). Open the first stop valve 164, start collecting the liquid leaking from the valve body 200 through the collection container 130, and measure the mass of the liquid in the collection container 130 in real time through the mass detection unit 141 (an electronic scale can be used), and the control unit 150 automatically calculates the volume of the liquid in the collection container 130 according to the mass-density relationship, and displays the calculation result in real time on the display (not shown in the figure). When the liquid in the collection container 130 rises to the liquid level sensor 144, the control unit 150 controls the first stop valve 164 and the infusion device 110 to be closed successively, and controls the alarm 170 to sound an alarm, reminding the staff to replace the next valve body 200 sample that needs to be tested in time.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A valve body internal leakage detection device, characterized in that: It includes an infusion device, a connecting tube set, a collection container, a detection component and a control unit; The connecting tube group includes a first connecting tube, a second connecting tube and a third connecting tube, the infusion device is connected to the first end of the first connecting tube to inject liquid of a preset density into the first connecting tube, the second end of the first connecting tube is configured to be connected to the inlet of the valve body to be tested, one end of the second connecting tube is configured to be connected to the first outlet of the valve body to be tested, the first end of the third connecting tube is configured to be connected to the second outlet of the valve body to be tested, and the second end of the third connecting tube is connected to the collecting container to collect the liquid leaked in the internal leakage test of the valve body to be tested through the collecting container; The detection component includes a mass detection unit, which is used to measure the mass of the liquid in the collection container. The control unit is electrically connected to the valve body to be tested and the mass detection unit. The control unit is used to control the movement of the valve body to be tested and calculate the volume of fluid leaked in the internal leakage test of the valve body to be tested based on the measurement results detected by the mass detection unit.

2. The valve body internal leakage detection device according to claim 1, characterized in that: It also includes a valve group, the valve group includes a regulating valve, the detection component includes a pressure gauge, the regulating valve and the pressure gauge are both connected to the first connecting pipe, the regulating valve is used to adjust the pressure of the liquid flowing through the first connecting pipe, and the regulating valve is electrically connected to the control unit.

3. The valve body internal leakage detection device according to claim 2, characterized in that: The valve group also includes a pressure reducing valve arranged on the first connecting pipe. In the direction from the first end of the first connecting pipe to the second end of the first connecting pipe, the pressure reducing valve, the regulating valve and the pressure gauge are arranged in sequence, and the pressure reducing valve is electrically connected to the control unit.

4. The valve body internal leakage detection device according to claim 3, characterized in that: The valve group further includes a one-way valve disposed on the first connecting pipe. The one-way valve is located between the pressure gauge and the second end of the first connecting pipe, and the one-way valve is conductive toward the second end of the first connecting pipe.

5. The valve body internal leakage detection device according to claim 4, characterized in that: The valve group further includes a first stop valve, which is disposed on the third connecting pipe and is electrically connected to the control unit.

6. The valve body internal leakage detection device according to claim 5, characterized in that: The valve group also includes a second stop valve and a third stop valve, the second stop valve is arranged on the second connecting pipe, the third stop valve is arranged on the first connecting pipe, the third stop valve is located between the regulating valve and the first end of the first connecting pipe, and the second stop valve and the third stop valve are both electrically connected to the control unit.

7. The valve body internal leakage detection device according to any one of claims 2 to 6, characterized in that: The detection assembly further includes a flow meter disposed on the first connecting pipe, and the flow meter is used to measure the flow rate of the liquid flowing through the first connecting pipe.

8. The valve body internal leakage detection device according to any one of claims 1 to 6, characterized in that: The detection component also includes a liquid level sensor, which is arranged in the collection container. The liquid level sensor and the infusion device are both electrically connected to the control unit. The control unit is configured to control the infusion device to stop infusion when the liquid level sensor detects liquid.

9. The valve body internal leakage detection device according to claim 8, characterized in that: It also includes an alarm, which is electrically connected to the control unit. The control unit is configured to control the alarm to sound an alarm when the liquid level sensor detects liquid.

10. The valve body internal leakage detection device according to claim 7, characterized in that It also includes a display, and the quality detection unit, the pressure gauge, the flow meter and the control unit are all electrically connected to the display.

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