CN216621723U - Test device for testing performance and long-term action life of check valve - Google Patents

Abstract

The utility model discloses a test device for testing performance and long-term action life of a check valve, which comprises a test pipeline, the check valve, an on-off device and a detection device, wherein the check valve is arranged on the test pipeline, the test pipeline comprises a second pipeline, a first pipeline and a third pipeline, a pressure source supplies a medium with pressure to the second pipeline, one end of the first pipeline is communicated with the second pipeline, two ends of the third pipeline are respectively communicated with the first pipeline and the second pipeline, the check valve is arranged on the third pipeline, the on-off device can determine that the medium is discharged through the second pipeline or the first pipeline after flowing through the check valve, and the detection device can judge the flow of the medium discharged through the second pipeline and the first pipeline. This scheme is through changing the medium trend, surveys from two positive and negative directions of check valve, judges the check valve inefficacy, and the quick judgement inefficacy reason carries out failure analysis, and the scheme still can be used to the test product simultaneously and whether qualified.

Description

Test device for testing performance and long-term action life of check valve

Technical Field

The utility model relates to the field of one-way valves, in particular to a test device for testing performance and long-term action life of a one-way valve.

Background

In daily life, the application of the check valve has entered into the aspects of people's life, so the performance and reliability of the check valve are especially important. Patent document with publication number CN213336773U discloses a check valve performance test device, which comprises a case made of metal material, the upper part of the case is provided with three stations for installing a check valve to be tested, which are sequentially set as a first station, a second station and a third station, three precision pressure gauges are sequentially arranged behind the three stations, which are set as a first precision pressure gauge, a second precision pressure gauge and a third precision pressure gauge, each station is provided with an installation component of the check valve to be tested, the installation component comprises a check valve installation seat to be tested, a positioning device and a pressing device, each check valve to be tested is connected to an air source through an air inlet pipe component, and the air inlet pipe component is further connected to the corresponding precision pressure gauge through an air guide pipe. Although the above patent has a plurality of work benches working in coordination, the overall structure is huge in size, and only a single flow direction of the check valve can be tested in a sealing manner, so that the detection effect is not comprehensive.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a test apparatus for testing performance and long-term operation life of a check valve, which has a simpler structure and a more comprehensive test effect.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a check valve performance and long-term action life test device, including test pipeline and check valve, the check valve is installed on testing the pipeline, testing the pipeline and being connected with the pressure source and provide pressure to the test of check valve, testing the pipeline and including the second pipeline, first pipeline and third pipeline, the pressure source provides the medium that has pressure to the second pipeline, the one end and the second pipeline intercommunication of first pipeline, the both ends of third pipeline communicate with first pipeline and second pipeline respectively, the check valve is installed on the third pipeline, still include on-off device and detection device, on-off device can confirm that the medium passes through second pipeline or first pipeline after flowing through the check valve and discharges, detection device can judge the flow via second pipeline and the first pipeline discharge medium. Therefore, after the check valve is arranged on the third pipeline, the check valve is detected in the forward direction and the reverse direction by changing the medium passage, so that whether the check valve is qualified or not and whether the limit service life and the performance of the check valve meet the design requirements or not can be detected more comprehensively; through above-mentioned device, can also judge that the check valve is because can't open totally, or the check valve that the sealing is incomplete leads to is out of order, makes things convenient for follow-up to make and improves.

Preferably, the on-off device comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve, the first electromagnetic valve and the second electromagnetic valve are installed on the first pipeline, the third electromagnetic valve and the fourth electromagnetic valve are installed on the second pipeline, the connecting position of the third pipeline and the first pipeline is located between the first electromagnetic valve and the second electromagnetic valve, and the connecting position of the third pipeline and the second pipeline is located between the third electromagnetic valve and the fourth electromagnetic valve.

Preferably, the on-off device further includes a time relay for controlling opening and closing of each solenoid valve. Thus, the test process is more intelligent through the time relay.

Preferably, the counting device is electrically connected with the time relay, and the on-off times of the first electromagnetic valve are counted by the counting device. Therefore, a recording function is provided for the testing device, and the performance and the service life of the check valve are conveniently determined through comparison statistics of data generated by the flowmeter.

Preferably, the detection device comprises a first flowmeter and a second flowmeter, the first flowmeter is arranged at the tail part of the first pipeline, and the second flowmeter is arranged at the tail part of the second pipeline

Preferably, the detection device further comprises a first alarm and a second alarm, the first alarm is electrically connected with the time relay and the first flowmeter respectively, and the second alarm is electrically connected with the second flowmeter and the time relay respectively; when the values measured by the first flowmeter and the second flowmeter are out of the set limit range, the first alarm or the second alarm gives an alarm, and the time relay stops working.

Preferably, the pressure testing device further comprises a pressure regulating valve and a pressure storage tank, wherein the pressure regulating valve is used for ensuring the pressure in the testing pipeline to be stable, the pressure regulating valve is installed on the pressure supply pipe, one end of the pressure supply pipe is communicated with the pressure source, the other end of the pressure supply pipe is communicated with the inlet of the pressure storage tank, and one end of the second pipeline is communicated with the outlet of the pressure storage tank. Thus, the stability of the pressure in the test line can be ensured.

Preferably, the pressure storage tank is provided with a pressure gauge. Therefore, the novel pipeline pressure can be provided more intuitively.

Preferably, the test pipelines are all red copper metal pipelines.

In the technical scheme of the utility model, the overall structure of the test device is simplified through the arrangement of the test pipeline and the check valve; change the medium trend through on-off device, test from two positive and negative directions of check valve, can judge through detection device that the check valve is inefficacy because the check valve can not open completely, still appear revealing and can't reach sealed requirement, and then quick judgement failure reason carries out failure analysis, and the scheme still can be used to test whether qualified product simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of a test device for testing performance and long-term operation life of a check valve.

Reference numerals: 1. a pressure supply pipe; 2. a pressure regulating valve; 3. a pressure storage tank; 31. a pressure gauge; 4. testing the pipeline; 41. a first pipeline; 42. a second pipeline; 43. a third pipeline; 5. a one-way valve; 61. a first solenoid valve; 62. a second solenoid valve; 63. a third solenoid valve; 64. a fourth solenoid valve; 65. a time relay; 66. a counting device; 71. a first flow meter; 72. a second flow meter; 73. a first alarm; 74. a second alarm.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

Examples

The utility model provides a check valve performance and long-term action life test device, including test pipeline 4, check valve 5 and on-off device, test pipeline 4 includes second pipeline 42, first pipeline 41 and third pipeline 43, the entry and the pressure source of second pipeline 42 are connected, the pressure source provides the medium that has pressure to second pipeline 42, the one end and the second pipeline 42 of first pipeline 41 communicate, the both ends of third pipeline 43 communicate with first pipeline 41 and second pipeline 42 respectively, check valve 5 installs on third pipeline 43, still include on-off device and detection device, the on-off device can confirm that the medium passes through second pipeline 42 or first pipeline 41 after flowing through check valve 5 and discharges, detection device can judge the flow of the medium that discharges via second pipeline 42 and first pipeline 41. Therefore, after the check valve is arranged on the third pipeline, the check valve is detected in the forward direction and the reverse direction by changing the medium passage, so that whether the check valve is qualified or not and whether the limit service life and the performance of the check valve meet the design requirements or not can be detected more comprehensively; through above-mentioned device, can also judge that the check valve is because can't open totally, or the check valve that the sealing is incomplete leads to is out of order, makes things convenient for follow-up to make and improves.

In the present embodiment, the on-off device includes a first solenoid valve 61, a second solenoid valve 62, a third solenoid valve 63, and a fourth solenoid valve 64, the first solenoid valve 61 and the second solenoid valve 62 are installed on the first pipeline 41, the third solenoid valve 63 and the fourth solenoid valve 64 are installed on the second pipeline 42, a connection position of the third pipeline 43 and the first pipeline 41 is located between the first solenoid valve 61 and the second solenoid valve 62, and a connection position of the third pipeline 43 and the second pipeline 42 is located between the third solenoid valve 63 and the fourth solenoid valve 64; the flow meters include a first flow meter 71 mounted on the first pipe 41 and a second flow meter 72 mounted on the second pipe 42.

In this embodiment, the testing apparatus further includes a time relay 65, and the time relay 65 controls the opening and closing of each electromagnetic valve. Further, the on-off device further comprises a counting device 66, the counting device 66 is electrically connected with the time relay 65, and the counting device 66 can count the on-off times of the first electromagnetic valve 61. Therefore, the counting device can accurately record the data of the failure of the one-way valve.

In the present embodiment, the detection device includes a first flow meter 71 and a second flow meter 72, the first flow meter 71 is installed at the tail of the first pipeline 41, and the second flow meter 72 is installed at the tail of the second pipeline 42. Further, the detection device further includes a first alarm 73 and a second alarm 74, the first alarm 73 is electrically connected to the time relay 65 and the first flow meter 71, respectively, and the second alarm 74 is electrically connected to the second flow meter 72 and the time relay 65, respectively; when the values measured by the first flowmeter 71 and the second flowmeter 72 are out of the set limit range, the first alarm 73 or the second alarm 74 gives an alarm, and the time relay 65 stops operating. Therefore, the test result is more accurate, and testers can be timely informed to perform failure analysis.

In the embodiment, the pressure testing device further comprises a pressure regulating valve 2 and a pressure storage tank 3, wherein the pressure regulating valve 2 and the pressure storage tank 3 are used for ensuring the pressure in the testing pipeline 4 to be stable, the pressure storage tank 3 comprises an inlet and an outlet, the inlet of the pressure storage tank 3 is connected with a pressure source through a pressure supply pipe 1, the outlet of the pressure storage tank 3 is connected with one port of a second pipeline 42, and the pressure regulating valve 2 is arranged on the pressure supply pipe 1; the third and fourth electromagnetic valves 63 and 64 are located at the same side of the junction of the first and second connection pipes 41 and 42, and the pressure tank 3 and the pressure regulating valve 2 are located at the other side of the junction of the first and second connection pipes 41 and 42. Further, a pressure gauge 31 is arranged on the pressure storage tank 3. Therefore, the pressure in the pressure storage tank 3 can be observed conveniently, and the pressure in the test pipeline can be kept stable.

In this embodiment, the test pipelines 4 are all red copper metal pipelines. In other embodiments, the test line 4 may be made of other metal or plastic materials.

The use method of the test device comprises the following steps: in the initial state, the check valve 5 is mounted on the third pipe 43, and: when the medium is discharged from the second pipeline 42 after sequentially passing through the first pipeline 41 and the third pipeline 43, the process is positive detection, and the check valve 5 is opened due to positive pressure; the medium is discharged from the first pipeline 41 after sequentially passing through the second pipeline 42 and the third pipeline 43, the process is reverse detection, and in the process, the check valve 5 is always in a closed state due to reverse pressure applied to the check valve 5;

the method comprises the following specific steps: the pressure source sends a medium with stable pressure to the second pipeline 42 through the pressure regulating valve 2 and the pressure storage tank 3;

during forward detection, the first electromagnetic valve 61 and the fourth electromagnetic valve 64 are opened, the second electromagnetic valve 62 and the third electromagnetic valve 63 are closed, and a medium is discharged after sequentially passing through the first electromagnetic valve 61, the one-way valve 5, the fourth electromagnetic valve 64 and the second flowmeter 72;

during reverse detection, the first electromagnetic valve 61 and the fourth electromagnetic valve 64 are closed, the second electromagnetic valve 62 and the third electromagnetic valve 63 are opened, and a medium can be discharged after sequentially passing through the third electromagnetic valve 63, the one-way valve 5, the second electromagnetic valve 62 and the first flowmeter 71;

the time relay 65 controls the opening and closing of each one-way valve, so that the forward detection and the reverse detection of the one-way valve 5 are repeatedly performed; in the test process, when the data measured by the first flowmeter 71 is larger than the reverse set data, the reverse leakage of the check valve 5 is serious, and the service life and the performance limit are reached; when the data measured by the second flow meter 72 is smaller than the forward data set for the check valve 5, it indicates that the internal structural part of the check valve 5 is failed, and the check valve 5 cannot be fully opened, reaching the life and performance limit.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (9)

1. The utility model provides a check valve performance and long-term action life test device, includes test pipeline (4) and check valve (5), and install on test pipeline (4) check valve (5), and test pipeline (4) are connected and provide pressure, its characterized in that for the test of check valve (5) with the pressure source: the test pipeline (4) comprises a second pipeline (42), a first pipeline (41) and a third pipeline (43), a pressure source provides a medium with pressure to the second pipeline (42), one end of the first pipeline (41) is communicated with the second pipeline (42), two ends of the third pipeline (43) are respectively communicated with the first pipeline (41) and the second pipeline (42), and a one-way valve (5) is installed on the third pipeline (43); the device also comprises an on-off device and a detection device, wherein the on-off device can change the moving path of the medium, so that the medium is discharged through the second pipeline (42) or the first pipeline (41) after flowing through the one-way valve (5); the detection device is capable of determining the flow rate of the medium discharged via the second line (42) and the first line (41).

2. The test device for testing the performance and the long-term action life of the check valve according to claim 1, characterized in that: the on-off device comprises a first electromagnetic valve (61), a second electromagnetic valve (62), a third electromagnetic valve (63) and a fourth electromagnetic valve (64), wherein the first electromagnetic valve (61) and the second electromagnetic valve (62) are installed on a first pipeline (41), the third electromagnetic valve (63) and the fourth electromagnetic valve (64) are installed on a second pipeline (42), the connecting position of a third pipeline (43) and the first pipeline (41) is located between the first electromagnetic valve (61) and the second electromagnetic valve (62), and the connecting position of the third pipeline (43) and the second pipeline (42) is located between the third electromagnetic valve (63) and the fourth electromagnetic valve (64).

3. The test device for testing the performance and the long-term action life of the check valve according to claim 2, wherein: the on-off device also comprises a time relay (65) for controlling the opening and closing of each solenoid valve.

4. A check valve performance and long term operation life test device according to claim 3, characterized in that: the counting device (66) is electrically connected with the time relay (65), and the counting device (66) can count the on-off times of the first electromagnetic valve (61).

5. A check valve performance and long term operation life test device according to claim 3, characterized in that: the detection device comprises a first flowmeter (71) and a second flowmeter (72), wherein the first flowmeter (71) is installed at the tail part of the first pipeline (41), and the second flowmeter (72) is installed at the tail part of the second pipeline (42).

6. The test device for testing the performance and the long-term action life of the check valve according to claim 5, wherein: the detection device further comprises a first alarm (73) and a second alarm (74), wherein the first alarm (73) is electrically connected with the time relay (65) and the first flowmeter (71) respectively, and the second alarm (74) is electrically connected with the second flowmeter (72) and the time relay (65) respectively; when the values measured by the first flowmeter (71) and the second flowmeter (72) are out of the set limit range, the first alarm (73) or the second alarm (74) gives an alarm, and the time relay (65) stops working.

7. The test device for testing the performance and the long-term action life of the check valve according to claim 1, characterized in that: the pressure stabilizing device is characterized by further comprising a pressure regulating valve (2) and a pressure storage tank (3), wherein the pressure regulating valve (2) is used for ensuring the pressure in the testing pipeline (4) to be stable, the pressure regulating valve (2) is installed on the pressure supply pipe (1), one end of the pressure supply pipe (1) is communicated with a pressure source, the other end of the pressure supply pipe (1) is communicated with an inlet of the pressure storage tank (3), and one end of the second pipeline (42) is communicated with an outlet of the pressure storage tank (3).

8. The test device for testing the performance and the long-term action life of the check valve according to claim 7, wherein: a pressure gauge (31) is arranged on the pressure storage tank (3).

9. The test device for testing the performance and the long-term action life of the check valve according to claim 1, characterized in that: the test pipelines (4) are all red copper metal pipelines.

Images