Ball valve sealing performance detection method and device and detection data statistical method and device

Abstract

The invention discloses a ball valve sealing performance detection method and device and a detection data statistical method and device. According to the method, the opening state of the ball valve is adjusted, gas is filled into the two ends of the to-be-detected ball valve until a preset pressure value is reached, and gas filling is stopped; after waiting for a preset time, detecting whether the pressure values at the two ends of the to-be-detected ball valve are preset pressure values or not; adjusting the opening state of the ball valve, filling gas into the two ends of the to-be-tested ball valve, and stopping gas filling until a preset pressure value is reached; after waiting for a preset time, detecting whether the pressure values at the two ends of the to-be-detected ball valve are preset pressure values or not; adjusting the to-be-tested ball valve to be in a completely open state, filling gas into two ends of the ball valve, and stopping gas filling until a preset pressure value is reached; adjusting the opening state of the ball valve, and waiting for preset time; the to-be-detected ball valve is adjusted to be in a completely-opened state, and whether the pressure values of the two sides of the to-be-detected ball valve are preset pressure values or not is detected; and whether each part of the ball valve is qualified or not is judged. According to the invention, the detection efficiency can be improved, and parts with defective products can be classified and analyzed.

Description

Technical Field

[0001] The present invention relates to the field of ball valve detection, and more specifically, to a ball valve sealing detection method and device, and a detection data statistics method and device. Background Art

[0002] At present, ball valves are widely used in daily water pipes. With the huge production volume of ball valves, the detection of ball valves has become extremely important.

[0003] Traditional ball valve inspection uses manual inspection, which has low inspection efficiency. At the same time, the traditional inspection process can only get a conclusion on whether it passes or not, and cannot classify and analyze the causes of defective products. Therefore, it is impossible to prevent and control defective products in the upstream process, and it is difficult to improve the qualified rate of finished products.

[0004] The prior art discloses a shelling cylinder throttle valve and its test device and test method. The shelling cylinder throttle valve includes a pressure regulating valve, an air supply pipe, an external pilot pipe, a two-position three-way solenoid valve and a corresponding two-position three-way solenoid valve power control line; the test device includes a main gas circuit and a branch gas circuit, and a three-way B, a ball valve C and a three-way D are sequentially installed in series along the gas circuit in the downstream direction of the main gas circuit; the branch gas circuit includes two ball valves, a shelling cylinder throttle valve, a flow meter and two pressure gauges; the test method includes a gas circuit leakage point test of the test device. This method mainly focuses on the detection of the pipeline, and does not involve the detection of specific components in the ball valve. Summary of the invention

[0005] In view of the defects of the existing ball valve detection method in low detection efficiency and inability to classify and analyze the parts where defective products are produced, the present invention provides a ball valve sealing detection method and device, and a detection data statistics method and device, which can improve the detection efficiency and classify and analyze the parts where defective products are produced.

[0006] The primary purpose of the present invention is to solve the above technical problems. The technical solutions of the present invention are as follows:

[0007] A ball valve sealing detection method, comprising:

[0008] S101: The ball valve to be tested is adjusted to a fully open state or a 45-degree open state, and gas is charged into both ends of the ball valve to be tested until a first preset pressure value is reached, and then the charging is stopped;

[0009] S102: After waiting for a first preset time, detect whether the pressure values ​​at both ends of the ball valve to be tested are the first preset pressure values; if they are the first preset pressure values, the handle component of the ball valve to be tested is qualified, and step S103 is executed; if they are not the first preset pressure values, the handle component of the ball valve to be tested is unqualified, and step S103 is executed;

[0010] S103: adjusting the ball valve to be tested to a fully closed state, filling gas into both ends of the ball valve to be tested until a second preset pressure value is reached, and then stopping the filling;

[0011] S104: After waiting for a second preset time, detect whether the pressure values ​​at both ends of the ball valve to be tested are the second preset pressure values; if they are the second preset pressure values, the front and rear end components of the ball valve to be tested are qualified, and step S105 is executed; if they are not the second preset pressure values, the front and rear end components of the ball valve to be tested are unqualified, and step S105 is executed;

[0012] S105: adjusting the ball valve to be tested to a fully open state, filling gas into both ends of the ball valve until a third preset pressure value is reached, and then stopping the filling;

[0013] S106: adjusting the ball valve to be tested to a fully closed state and waiting for a third preset time;

[0014] S107: adjust the ball valve to be tested to a fully open state, and detect whether the pressure values ​​on both sides of the ball valve to be tested are the third preset pressure value; if it is the third preset pressure value, the internal components of the ball valve to be tested are qualified; if it is not the third preset pressure value, the internal components of the ball valve to be tested are unqualified.

[0015] Furthermore, the first preset pressure value, the second preset pressure value, the third preset pressure value, the first preset pressure value, the second preset pressure value, and the third preset pressure value are all 0.3 Pa.

[0016] Furthermore, the first preset time, the second preset time, and the third preset time are all 2 seconds.

[0017] A ball valve sealing detection device comprises: a detection platform, a first pressure sensor, a second pressure sensor, a first pressing cylinder, a second pressing cylinder, a first pressing baffle, a second pressing baffle, a first rigid gas pipeline, and a second rigid gas pipeline;

[0018] The first pressing cylinder and the second pressing cylinder are arranged on the testing table at intervals;

[0019] The first rigid gas pipeline sequentially passes through the first pressing cylinder and the first pressing baffle, and the second rigid gas pipeline sequentially passes through the second pressing cylinder and the second pressing baffle;

[0020] The pressing surface of the first pressing baffle plate and the pressing surface of the second pressing baffle plate are arranged opposite to each other, and the axis heights of the first rigid gas pipeline and the second rigid gas pipeline are the same;

[0021] A first pressure sensor is disposed in the first rigid gas pipeline, and a second pressure sensor is disposed in the second rigid gas pipeline.

[0022] Furthermore, it also includes a first sealing rubber ring and a second sealing rubber ring;

[0023] The pressing surface of the first pressing baffle plate and the pressing surface of the second pressing baffle plate are concave surfaces;

[0024] The first sealing rubber ring is arranged on a side where the first pressing baffle contacts one end of the ball valve to be tested, and the second sealing rubber ring is arranged on a side where the second pressing baffle contacts the other end of the ball valve to be tested.

[0025] Furthermore, the inner diameter of the concave surface is larger than the outer diameter of the ball valve port.

[0026] A ball valve sealing detection data statistics device, comprising: the detection device according to any one of claims 4 to 6, a digital input module, a programmable controller, and a touch screen;

[0027] The first pressure sensor and the second pressure sensor in the detection device are connected to the programmable controller through signal lines respectively, the digital quantity input module is connected to the programmable controller through a PN bus, and the touch screen is connected to the programmable controller through the PN bus.

[0028] A ball valve sealing detection data statistics method, comprising:

[0029] S201: Use the detection method to detect a batch of ball valves; the digital input module counts the number of unqualified handle parts, the number of unqualified front and rear end parts, the number of unqualified valve internal parts, and the total number of detections, and sends them to the programmable controller;

[0030] S202: the programmable controller calculates the total qualified rate, the qualified rate of valve internal parts, the qualified rate of handle parts, and the qualified rate of front and rear end parts according to the total number of defective ball valves, the number of unqualified handle parts, the number of unqualified front and rear end parts, and the number of unqualified valve internal parts;

[0031] S203: The programmable controller sends the total qualified rate, the qualified rate of valve internal components, the qualified rate of handle components, and the qualified rate of front and rear end components to the production database for storage; and displays the total qualified rate, the qualified rate of valve internal components, the qualified rate of handle components, and the qualified rate of front and rear end components on the touch screen in real time.

[0032] Furthermore, after step S203, the user inputs the touch screen to request the programmable controller to view the historical total qualified rate, and the programmable controller requests the historical total qualified rate from the production database and returns the historical total qualified rate to the touch screen for display.

[0033] Furthermore, the calculation formula of the total qualified rate is as follows:

[0034]

[0035] The calculation formula of the qualified rate of the valve internal parts is as follows:

[0036]

[0037] The calculation formula for the qualified rate of the front and rear end components is as follows:

[0038]

[0039] The calculation formula of the handle component qualification rate is as follows:

[0040]

[0041] If one or more of the handle parts, front and rear end parts, and internal parts of a ball valve are unqualified, it will be recorded as a defective product.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The present invention adjusts the ball valve to be tested to a fully open state or a 45-degree open state, fills gas into both ends of the ball valve to be tested, stops filling gas after reaching a first preset pressure value; after waiting for a first preset time, detects whether the pressure values ​​at both ends of the ball valve to be tested are the first preset pressure values; if they are the first preset pressure values, the handle component of the ball valve to be tested is qualified; if they are not the first preset pressure values, the handle component of the ball valve is unqualified; adjusts the ball valve to be tested to a fully closed state, fills gas into both ends of the ball valve to be tested, stops filling gas after reaching a second preset pressure value; after waiting for a second preset time, detects whether the pressure values ​​at both ends of the ball valve to be tested are the second preset pressure values; if they are the second preset pressure values, If a pressure value is set, the front and rear end components of the ball valve to be tested are qualified; if it is not the second preset pressure value, the front and rear end components of the ball valve to be tested are unqualified; adjust the ball valve to be tested to a fully open state, fill gas into both ends of the ball valve, and stop filling after reaching a third preset pressure value; adjust the ball valve to be tested to a fully closed state, and wait for a third preset time; adjust the ball valve to be tested to a fully open state, and detect whether the pressure values ​​on both sides of the ball valve to be tested are the third preset pressure value; if it is the third preset pressure value, the internal components of the ball valve to be tested are qualified; if it is not the third preset pressure value, the internal components of the ball valve to be tested are unqualified; thereby improving the detection efficiency and classifying and analyzing the locations where defective products are produced.

[0044] At the same time, a batch of ball valves is inspected; the digital input module counts the number of unqualified handle parts, the number of unqualified front and rear end parts, the number of unqualified valve internal parts, and the total number of inspections, and sends them to the programmable controller; the programmable controller calculates the total number of inspections, the total qualified rate, the qualified rate of valve internal parts, the qualified rate of handle parts, and the qualified rate of front and rear end parts according to the total number of defective ball valves, the number of unqualified handle parts, the number of unqualified front and rear end parts, and the number of unqualified valve internal parts; the programmable controller sends the total qualified rate, the qualified rate of valve internal parts, the qualified rate of handle parts, and the qualified rate of front and rear end parts to the production database for storage; and displays the total qualified rate, the qualified rate of valve internal parts, the qualified rate of handle parts, and the qualified rate of front and rear end parts on the touch screen in real time; thereby, the qualified rate of each component of the same batch of ball valves and the total qualified rate are counted, which is convenient for distinguishing unqualified parts, and then analyzing the causes of unqualified parts, thereby improving the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a flow chart of a ball valve sealing detection method provided in Example 1.

[0046] Figure 2 This is a structural diagram of a ball valve sealing detection device provided in Example 1.

[0047] Figure 3 This is a flow chart of a ball valve sealing detection data statistics method provided in Example 1. DETAILED DESCRIPTION

[0048] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0049] In order to better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0050] It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0051] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0052] Example 1

[0053] like Figure 1 As shown, a ball valve sealing detection method includes:

[0054] S101: The ball valve to be tested is adjusted to a fully open state or a 45-degree open state, and gas is charged into both ends of the ball valve to be tested until a first preset pressure value is reached, and then the charging is stopped;

[0055] S102: After waiting for a first preset time, detect whether the pressure values ​​at both ends of the ball valve to be tested are the first preset pressure values; if they are the first preset pressure values, the handle component of the ball valve to be tested is qualified, and step S103 is executed; if they are not the first preset pressure values, the handle component of the ball valve to be tested is unqualified, and step S103 is executed;

[0056] S103: adjusting the ball valve to be tested to a fully closed state, filling gas into both ends of the ball valve to be tested until a second preset pressure value is reached, and then stopping the filling;

[0057] S104: After waiting for a second preset time, detect whether the pressure values ​​at both ends of the ball valve to be tested are the second preset pressure values; if they are the second preset pressure values, the front and rear end components of the ball valve to be tested are qualified, and step S105 is executed; if they are not the second preset pressure values, the front and rear end components of the ball valve to be tested are unqualified, and step S105 is executed;

[0058] S105: adjusting the ball valve to be tested to a fully open state, filling gas into both ends of the ball valve until a third preset pressure value is reached, and then stopping the filling;

[0059] S106: adjusting the ball valve to be tested to a fully closed state and waiting for a third preset time;

[0060] S107: adjust the ball valve to be tested to a fully open state, and detect whether the pressure values ​​on both sides of the ball valve to be tested are the third preset pressure value; if it is the third preset pressure value, the internal components of the ball valve to be tested are qualified; if it is not the third preset pressure value, the internal components of the ball valve to be tested are unqualified.

[0061] Furthermore, the first preset pressure value, the second preset pressure value, the third preset pressure value, the first preset pressure value, the second preset pressure value, and the third preset pressure value are all 0.3 Pa.

[0062] Furthermore, the first preset time, the second preset time, and the third preset time are all 2 seconds.

[0063] like Figure 2 As shown, a ball valve sealing detection device includes: a detection platform, a first pressure sensor, a second pressure sensor, a first pressing cylinder, a second pressing cylinder, a first pressing baffle, a second pressing baffle, a first rigid gas pipeline, and a second rigid gas pipeline;

[0064] The first pressing cylinder and the second pressing cylinder are arranged on the testing table at intervals;

[0065] The first rigid gas pipeline sequentially passes through the first pressing cylinder and the first pressing baffle, and the second rigid gas pipeline sequentially passes through the second pressing cylinder and the second pressing baffle;

[0066] The pressing surface of the first pressing baffle plate and the pressing surface of the second pressing baffle plate are arranged opposite to each other, and the axis heights of the first rigid gas pipeline and the second rigid gas pipeline are the same;

[0067] A first pressure sensor is disposed in the first rigid gas pipeline, and a second pressure sensor is disposed in the second rigid gas pipeline.

[0068] Furthermore, it also includes a first sealing rubber ring and a second sealing rubber ring;

[0069] The pressing surface of the first pressing baffle plate and the pressing surface of the second pressing baffle plate are concave surfaces;

[0070] The first sealing rubber ring is arranged on a side where the first pressing baffle contacts one end of the ball valve to be tested, and the second sealing rubber ring is arranged on a side where the second pressing baffle contacts the other end of the ball valve to be tested.

[0071] Furthermore, the inner diameter of the concave surface is larger than the outer diameter of the ball valve port.

[0072] A ball valve sealing detection data statistics device, comprising: the detection device according to any one of claims 4 to 6, a digital input module, a programmable controller, and a touch screen;

[0073] The first pressure sensor and the second pressure sensor in the detection device are connected to the programmable controller through signal lines respectively, the digital quantity input module is connected to the programmable controller through a PN bus, and the touch screen is connected to the programmable controller through the PN bus.

[0074] like Figure 3 As shown, a ball valve sealing detection data statistics method includes:

[0075] S201: Use the detection method to detect a batch of ball valves; the digital input module counts the number of unqualified handle parts, the number of unqualified front and rear end parts, the number of unqualified valve internal parts, and the total number of detections, and sends them to the programmable controller;

[0076] S202: the programmable controller calculates the total qualified rate, the qualified rate of valve internal parts, the qualified rate of handle parts, and the qualified rate of front and rear end parts according to the total number of defective ball valves, the number of unqualified handle parts, the number of unqualified front and rear end parts, and the number of unqualified valve internal parts;

[0077] S203: The programmable controller sends the total qualified rate, the qualified rate of valve internal components, the qualified rate of handle components, and the qualified rate of front and rear end components to the production database for storage; and displays the total qualified rate, the qualified rate of valve internal components, the qualified rate of handle components, and the qualified rate of front and rear end components on the touch screen in real time.

[0078] Furthermore, after step S203, the user inputs the touch screen to request the programmable controller to view the historical total qualified rate, and the programmable controller requests the historical total qualified rate from the production database and returns the historical total qualified rate to the touch screen for display.

[0079] Furthermore, the calculation formula of the total qualified rate is as follows:

[0080]

[0081] The calculation formula of the qualified rate of the valve internal parts is as follows:

[0082]

[0083] The calculation formula for the qualified rate of the front and rear end components is as follows:

[0084]

[0085] The calculation formula of the handle component qualification rate is as follows:

[0086]

[0087] If one or more of the handle parts, front and rear end parts, and internal parts of a ball valve are unqualified, it will be recorded as a defective product.

[0088] The same or similar reference numerals correspond to the same or similar components;

[0089] The terms used in the drawings to describe positional relationships are only used for illustrative purposes and should not be construed as limiting this patent;

[0090] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. 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 claims of the present invention.

Claims

1. A ball valve sealing detection method, characterized in that: include: S101: The ball valve to be tested is adjusted to a fully open state or a 45-degree open state, and gas is charged into both ends of the ball valve to be tested until a first preset pressure value is reached, and then the charging is stopped; S102: After waiting for a first preset time, detect whether the pressure values ​​at both ends of the ball valve to be tested are the first preset pressure values; if they are the first preset pressure values, the handle component of the ball valve to be tested is qualified, and step S103 is executed; if they are not the first preset pressure values, the handle component of the ball valve to be tested is unqualified, and step S103 is executed; S103: adjusting the ball valve to be tested to a fully closed state, filling gas into both ends of the ball valve to be tested until a second preset pressure value is reached, and then stopping the filling; S104: After waiting for a second preset time, detect whether the pressure values ​​at both ends of the ball valve to be tested are the second preset pressure values; if they are the second preset pressure values, the front and rear end components of the ball valve to be tested are qualified, and step S105 is executed; if they are not the second preset pressure values, the front and rear end components of the ball valve to be tested are unqualified, and step S105 is executed; S105: adjusting the ball valve to be tested to a fully open state, filling gas into both ends of the ball valve until a third preset pressure value is reached, and then stopping the filling; S106: adjusting the ball valve to be tested to a fully closed state and waiting for a third preset time; S107: adjust the ball valve to be tested to a fully open state, and detect whether the pressure values ​​on both sides of the ball valve to be tested are the third preset pressure value; if it is the third preset pressure value, the internal components of the ball valve to be tested are qualified; if it is not the third preset pressure value, the internal components of the ball valve to be tested are unqualified.

2. A ball valve sealing detection method according to claim 1, characterized in that: The first preset pressure value, the second preset pressure value, the third preset pressure value, the first preset pressure value, the second preset pressure value, and the third preset pressure value are all 0.3 Pa.

3. A ball valve sealing detection method according to claim 1, characterized in that: The first preset time, the second preset time, and the third preset time are all 2 seconds.

4. A ball valve sealing detection device, applied to the detection method according to any one of claims 1 to 3, characterized in that: include: A testing platform, a first pressure sensor, a second pressure sensor, a first pressing cylinder, a second pressing cylinder, a first pressing baffle, a second pressing baffle, a first rigid gas pipeline, and a second rigid gas pipeline; The first pressing cylinder and the second pressing cylinder are arranged on the testing table at intervals; The first rigid gas pipeline sequentially passes through the first compression cylinder and the first compression baffle, and the second rigid gas pipeline sequentially passes through the second compression cylinder and the second compression baffle; The pressing surface of the first pressing baffle plate and the pressing surface of the second pressing baffle plate are arranged opposite to each other, and the axis heights of the first rigid gas pipeline and the second rigid gas pipeline are the same; A first pressure sensor is disposed in the first rigid gas pipeline, and a second pressure sensor is disposed in the second rigid gas pipeline.

5. A ball valve sealing detection device according to claim 4, characterized in that: Also includes a first sealing rubber ring and a second sealing rubber ring; The pressing surface of the first pressing baffle plate and the pressing surface of the second pressing baffle plate are concave surfaces; The first sealing rubber ring is arranged on a side where the first pressing baffle contacts one end of the ball valve to be tested, and the second sealing rubber ring is arranged on a side where the second pressing baffle contacts the other end of the ball valve to be tested.

6. A ball valve sealing detection device according to claim 5, characterized in that: The inner diameter of the concave surface is greater than the outer diameter of the ball valve port.

7. A ball valve sealing detection data statistics device, characterized in that: include: The detection device, digital input module, programmable controller and touch screen as claimed in any one of claims 4 to 6; The first pressure sensor and the second pressure sensor in the detection device are connected to the programmable controller through signal lines respectively, the digital quantity input module is connected to the programmable controller through a PN bus, and the touch screen is connected to the programmable controller through the PN bus.

8. A method for statistically analyzing ball valve sealing test data, applied to the statistical device described in claim 7, characterized in that: include: S201: Using the detection method as described in claims 1 to 3 to detect a batch of ball valves; the digital input module counts the number of unqualified handle parts, the number of unqualified front and rear end parts, the number of unqualified valve internal parts, and the total number of detections, and sends them to the programmable controller; S202: the programmable controller calculates the total qualified rate, the qualified rate of valve internal parts, the qualified rate of handle parts, and the qualified rate of front and rear end parts according to the total number of defective ball valves, the number of unqualified handle parts, the number of unqualified front and rear end parts, and the number of unqualified valve internal parts; S203: The programmable controller sends the total qualified rate, the qualified rate of valve internal components, the qualified rate of handle components, and the qualified rate of front and rear end components to the production database for storage; and displays the total qualified rate, the qualified rate of valve internal components, the qualified rate of handle components, and the qualified rate of front and rear end components on the touch screen in real time.

9. A ball valve sealing detection data statistics method according to claim 8, characterized in that: After step S203, the user inputs the touch screen to request the programmable controller to view the historical total qualified rate, and the programmable controller requests the historical total qualified rate from the production database and returns the historical total qualified rate to the touch screen for display.

10. A ball valve sealing detection data statistics method according to claim 8, characterized in that: The calculation formula of the total qualified rate is as follows: The calculation formula of the qualified rate of the valve internal parts is as follows: The calculation formula for the qualified rate of the front and rear end components is as follows: The calculation formula of the handle component qualification rate is as follows: If one or more of the handle parts, front and rear end parts, and internal parts of a ball valve are unqualified, it will be recorded as a defective product.

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