System and method for automatically detecting performance of electronic control safety overflow valve

Abstract

The invention discloses an automatic detection system and method for an electric control safety overflow valve, and belongs to the technical field of automatic detection and metering. According to the system, a pressure container serves as a load, detection parameters are set, opening and closing control is conducted on a valve according to the detection parameters and output pressure of the pressure container, voltage and current in the opening and closing process of the valve and air pressure changes of the pressure container are collected, and opening and closing control over the valve is further adjusted according to the collected parameters. Automatic control and performance parameter acquisition of the electric control safety overflow valve are completed in the cycle process. According to the method, automatic detection of the electric control safety overflow valve is realized, simultaneous automatic detection of multiple paths of electric control safety overflow valves can be realized, and the detection efficiency and the detection reliability are greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of automated detection and metering technology, and in particular to a new type of automatic detection system and method for the performance of an electric-controlled overflow valve on an arrow. Background Art

[0002] At present, the detection of Jianshang electronically controlled safety overflow valves is mainly carried out through manual control testing, and only one valve can be tested in a single test. The detection method is complex and inefficient, and it is easy to introduce large recording errors, resulting in randomness in the detection results. Summary of the invention

[0003] The present invention provides a system and method for automatically detecting the performance of an electronically controlled safety relief valve, which solves the problem that the performance parameters of the electronically controlled safety relief valve on an arrow cannot be automatically detected and multiple detections cannot be performed simultaneously, and can greatly improve the detection efficiency.

[0004] The electronically controlled overflow valve automatic detection system provided by the present disclosure mainly comprises: a computer device (1), a control test device (2), a pressure vessel (5) and a pressure sensor (4); wherein:

[0005] The pressure container (5) is used to store compressed gas and is connected to the air inlet of the electronically controlled safety relief valve to be tested through a pipeline. When the electronically controlled safety relief valve to be tested is opened under the control of the control test device (2), the pressure container (5) delivers compressed gas to the electronically controlled safety relief valve (3) through the connected pipeline.

[0006] The pressure sensor (4) is used to sense the current pressure of the pressure vessel (5) and convert it into a pressure signal to be transmitted to the control test equipment (2);

[0007] The control test device (2) is used to: calculate and output corresponding voltage and current control signals to the electric control overflow valve (3) to be tested according to the control parameters transmitted by the computer device (1) and the pressure signal transmitted by the pressure sensor (4) to control the switch thereof; continuously obtain the voltage and current signals during the switch process of the electric control overflow valve and the pressure signal transmitted by the pressure sensor (4); and send the obtained signals to the computer device (1);

[0008] The computer device (1) is used for information exchange between a detection person and a control test device (2), including: setting test parameters of an electric-controlled safety relief valve and issuing them to a control tester, and receiving signals sent by the control test device (2); and judging the performance status of the electric-controlled safety relief valve to be tested based on the signals fed back by the control test device (2).

[0009] Furthermore, the system comprises: a plurality of parallel pressure vessels (5) and pressure sensors (4), which are connected to a plurality of electrically controlled overflow valves correspondingly, and are used to detect the plurality of electrically controlled overflow valves simultaneously; accordingly, the control test equipment is provided with a plurality of groups of interfaces, which are respectively connected to the plurality of groups of electrically controlled overflow valves and pressure sensors.

[0010] An automatic detection method for the performance of an electronically controlled safety relief valve using the above system comprises the following steps:

[0011] S1, setting the detection parameters through the computer device (1) and sending them to the control test device (2);

[0012] S2, delivering compressed gas of a specified pressure to the pressure container (5);

[0013] S3, the pressure sensor (4) measures the current pressure of the pressure vessel (5) in real time, and converts it into a pressure signal and transmits it to the control test equipment (2);

[0014] S4, controlling the test equipment (2) to calculate and output corresponding voltage and current control signals to the electronically controlled overflow valve (3) according to the received detection parameters and the pressure signal transmitted by the pressure sensor (4), so as to control the opening and closing of the valve;

[0015] S5, controlling the test device (2) to continuously collect the voltage and current values ​​output by the electronically controlled overflow valve and the pressure signal transmitted by the pressure sensor (4) during the process of opening and closing the valve, and transmit the values ​​to the computer device (1);

[0016] S6, the computer device (1) performs relevant parsing, analysis and calculation according to the signal transmitted by the control test device (2);

[0017] The above steps S4-S5 are continuously cycled to complete the control of the electronically controlled safety relief valve and the collection of performance parameters.

[0018] Furthermore, the step S4 includes the following steps:

[0019] The output gas pressure of the current pressure container (5) is calculated according to the pressure signal, and the specific method includes:

[0020] The pressure signal is amplified and converted, and high-order filtering is performed. The filtered values ​​are stored in the CPU array in the order of acquisition time;

[0021] The CPU processes the current array data using the least squares method according to the following formula, solves the optimal coefficient, and calculates the output pressure corresponding to the current moment for the logic control of valve opening and closing.

[0022]

[0023] In the formula, ——Output pressure value;

[0024] ——Fitting coefficient 1;

[0025] ——Fitting coefficient 2;

[0026] x i ——The time corresponding to the i-th collected value in the array;

[0027] ——array time average;

[0028] y i ——The i-th collected value in the array;

[0029] ——Average value of array collection value;

[0030] n——Numeric length.

[0031] Furthermore, in step S4, the control test device (2) calculates and outputs a corresponding voltage control signal according to the following formula:

[0032]

[0033] In the formula, ΔP is the pressure difference;

[0034] P i ——Pressure collection value;

[0035] P ref ——pressure setpoint;

[0036] U o ——output voltage value;

[0037] U i ——System internal voltage value.

[0038] Furthermore, the method can be used for simultaneous detection of multiple electronically controlled overflow valves, and the steps include:

[0039] Set detection parameters for multiple electronically controlled overflow valves respectively;

[0040] Multiple electronically controlled safety overflow valves work according to the set detection parameters;

[0041] During this process, the opening and closing air pressure and current and voltage parameters of each electronically controlled safety relief valve are measured simultaneously.

[0042] Compared with the prior art, the beneficial effects of the present invention are: (1) it realizes automatic detection of electric-controlled safety overflow valves, without the need for multiple devices, and only requires a single inspector to operate the equipment through a human-machine system to perform the detection; (2) it can realize automatic detection of multiple electric-controlled safety overflow valves at the same time; (3) the detection system is a dedicated sensor and processing software, and the detection results do not require human intervention, thereby improving the reliability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0044] Figure 1 Schematic diagram of the system structure according to an exemplary embodiment of the present disclosure, in which 1 is a computer, 2 is a control tester, 3 is an electronically controlled overflow valve, 4 is a pressure sensor, and 5 is a pressure tank. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] The present disclosure provides a system and method for automatically detecting the performance of an electronically controlled safety overflow valve. In an exemplary embodiment, the system structure is as shown in the attached Figure 1 As shown, including:

[0047] The computer 1, the control tester 2, the pressure tank 5 and the pressure sensor 4 are used to detect the performance parameters of the electronically controlled safety overflow valve 3, such as the opening and closing pressure values, the input voltage and current values, etc.

[0048] The computer 1 is installed with the electronically controlled overflow valve detection software, which can realize the information interaction between the detection personnel and the control tester 2;

[0049] The control tester function includes controlling the voltage and current signals output by the electronically controlled overflow valve 3 , detecting the voltage and current signals, receiving the pressure signals input by the pressure sensor 4 , and inputting and outputting network signals with the computer 1 .

[0050] In this system, the pressure tank is used as the load of the electric control safety overflow valve. The detection equipment measures the parameters such as the opening and closing air pressure and current of the electric control safety overflow valve through the internal pressure sensor, current sensor and other measuring components. The internal controller collects data in real time according to the set collection frequency. At the same time, the collected data is sent to the computer through a high-speed network, and the data is analyzed and displayed in real time to judge the performance of the electric control safety overflow valve.

[0051] As an option, the system can also automatically detect up to 6 electronically controlled overflow valves at the same time:

[0052] Six parallel pressure vessels (5) and pressure sensors (4) are used, which are connected to six electrically controlled overflow valves. Meanwhile, the control tester is provided with six groups of interfaces, which are connected to the respective electrically controlled overflow valves and pressure sensors. The computer software (1) can also control and detect the six electrically controlled overflow valves at the same time.

[0053] While the 6-way electronically controlled safety relief valves are working according to the different set detection parameters, the opening and closing air pressure, current and other parameters of each electronically controlled safety relief valve are measured simultaneously.

[0054] The above equipment is applied to set the detection parameters → control the opening and closing of the valve according to the detection parameters and the output pressure of the pressure tank → collect the voltage and current and pressure tank air pressure changes during the valve opening and closing process → further adjust the opening and closing control of the valve according to the collected parameters. In this way, a cycle process completes the control of the safety overflow valve and the collection of performance parameters.

[0055] The specific steps are further described as follows:

[0056] 1. Power on the control tester (2);

[0057] 2. Start the electronically controlled overflow valve detection software on the computer (1), manually input relevant detection parameters, and the computer (1) sends a network signal to the control tester (2);

[0058] 3. The compressed gas of a specified pressure is delivered to the pressure tank (5), and the pressure tank (5) delivers the compressed gas to the electric-controlled safety relief valve (3) through a pipeline connected to the electric-controlled safety relief valve (3);

[0059] 4. The pressure sensor (4) measures the current pressure of the pressure tank (5) in real time and converts it into a pressure signal and transmits it to the control tester (2);

[0060] 5. The control tester (2) calculates the output pressure of the pressure tank (5) at the current moment according to the pressure signal transmitted by the pressure sensor (4), which is used for the logic control of the opening and closing of the valve;

[0061] As a preferred method, the specific method is as follows:

[0062] The conversion circuit in the control tester (2) amplifies and converts the pressure signal and performs high-order filtering. The filtered values ​​are stored in the CPU array in the order of acquisition time. The CPU processes the current array data according to the least square method according to formula (1), solves the optimal coefficient, and calculates the output pressure corresponding to the current moment, which is used for the logic control of valve opening and closing:

[0063]

[0064] In the formula, ——Output pressure value

[0065] ——Fitting coefficient 1

[0066] ——Fitting coefficient 2

[0067] x i ——The time corresponding to the i-th collected value in the array

[0068] ——Array time average

[0069] y i ——The i-th collected value in the array

[0070] ——Average value of array collection value

[0071] n——Numerical length

[0072] 6. The control tester (2) calculates and outputs corresponding voltage and current control signals to the electronically controlled overflow valve (3) according to the detection parameters transmitted by the network signal from the computer (1) and the pressure signal transmitted by the pressure sensor (4), and collects the voltage and current values ​​(specific values ​​and waveforms, which are used to evaluate the performance parameters of the overflow valve) output by the overflow valve in real time;

[0073] The control test device (2) calculates the corresponding voltage control signal according to the following formula:

[0074]

[0075] In the formula, ΔP is the pressure difference;

[0076] P i ——Pressure collection value;

[0077] P ref ——pressure setpoint;

[0078] U o ——output voltage value;

[0079] U i——System internal voltage value.

[0080] 7. The control tester (2) converts the collected pressure signals, voltage and current signals into network signals and transmits them to the computer (1) during the real-time control of the electronically controlled overflow valve (3);

[0081] 8. The electronically controlled overflow valve detection software running on the computer (1) parses, analyzes and calculates the network signal transmitted by the control tester (2), records and displays the relevant data, and can output a detection report.

[0082] When multiple electronically controlled overflow valves need to be tested simultaneously:

[0083] In a computer (1), detection parameters are respectively set for a plurality of electronically controlled overflow valves;

[0084] Multiple electronically controlled safety overflow valves work according to the set detection parameters;

[0085] During this process, the opening and closing air pressure and current and voltage parameters of each electronically controlled safety relief valve are measured simultaneously.

[0086] The above technical scheme is only an exemplary embodiment of the present invention. For those skilled in the art, it is easy to make various types of improvements or modifications based on the application methods and principles disclosed in the present invention, and it is not limited to the method described in the above specific embodiment of the present invention. Therefore, the method described above is only preferred and does not have a restrictive meaning.

Claims

1. An automatic detection system for an electronically controlled overflow valve, characterized in that: include: Computer equipment (1), control test equipment (2), pressure vessel (5) and pressure sensor (4); wherein: The pressure container (5) is used to store compressed gas and is connected to the air inlet of the electronically controlled safety relief valve to be tested through a pipeline. When the electronically controlled safety relief valve to be tested is opened under the control of the control test device (2), the pressure container (5) delivers compressed gas to the electronically controlled safety relief valve (3) through the connected pipeline. The pressure sensor (4) is used to sense the current pressure of the pressure vessel (5) and convert it into a pressure signal to be transmitted to the control test equipment (2); The control test device (2) is used to: calculate and output corresponding voltage and current control signals to the electric control overflow valve (3) to be tested according to the control parameters transmitted by the computer device (1) and the pressure signal transmitted by the pressure sensor (4) to control the switch thereof; continuously obtain the voltage and current signals during the switch process of the electric control overflow valve and the pressure signal transmitted by the pressure sensor (4); and send the obtained signals to the computer device (1); The computer device (1) is used for information exchange between a detection person and a control test device (2), including: setting test parameters of an electric-controlled safety relief valve and issuing them to a control tester, and receiving signals sent by the control test device (2); and judging the performance status of the electric-controlled safety relief valve to be tested based on the signals fed back by the control test device (2).

2. The system according to claim 1, characterized in that include: The multi-channel parallel pressure container (5) and the pressure sensor (4) are connected to a plurality of electrically controlled safety overflow valves, and are used to simultaneously detect the plurality of electrically controlled safety overflow valves; accordingly, the control test equipment is provided with a plurality of groups of interfaces, which are respectively connected to the plurality of electrically controlled safety overflow valves and the pressure sensor.

3. A method for automatically detecting the performance of an electronically controlled safety overflow valve using the system of claim 1 or 2, comprising the following steps: S1, setting the detection parameters through the computer device (1) and sending them to the control test device (2); S2, delivering compressed gas of a specified pressure to the pressure container (5); S3, the pressure sensor (4) measures the current pressure of the pressure vessel (5) in real time, and converts it into a pressure signal and transmits it to the control test equipment (2); S4, controlling the test equipment (2) to calculate and output corresponding voltage and current control signals to the electronically controlled overflow valve (3) according to the received detection parameters and the pressure signal transmitted by the pressure sensor (4), so as to control the opening and closing of the valve; S5, controlling the test device (2) to continuously collect the voltage and current values ​​output by the electronically controlled overflow valve and the pressure signal transmitted by the pressure sensor (4) during the process of opening and closing the valve, and transmit the values ​​to the computer device (1); S6, the computer device (1) performs relevant parsing, analysis and calculation according to the signal transmitted by the control test device (2); The above steps S4-S5 are continuously cycled to complete the control of the electronically controlled safety relief valve and the collection of performance parameters.

4. The method according to claim 3, characterized in that The step S4 includes the following steps: The output gas pressure of the current pressure container (5) is calculated according to the pressure signal, and the specific method includes: The pressure signal is amplified and converted, and high-order filtering is performed. The filtered values ​​are stored in the CPU array in the order of acquisition time; The CPU processes the current array data using the least squares method according to the following formula, solves the optimal coefficient, and calculates the output pressure corresponding to the current moment, which is used for the logic control of valve opening and closing. In the formula, ——Output pressure value; ——Fitting coefficient 1; ——Fitting coefficient 2; x i ——The time corresponding to the i-th collected value in the array; ——array time average; y i ——The i-th collected value in the array; ——Average value of array collection value; n——Numeric length.

5. The method according to claim 4, characterized in that In step S4, the control test device (2) calculates and outputs a corresponding voltage control signal according to the following formula: In the formula, ΔP is the pressure difference; P i ——Pressure collection value; P ref ——pressure setpoint; U o ——output voltage value; U i ——System internal voltage value.

6. The method according to claim 1, characterized in that The method can be used for simultaneous detection of multiple electronically controlled safety relief valves, and the steps include: Set detection parameters for multiple electronically controlled overflow valves respectively; Multiple electronically controlled safety overflow valves work according to the set detection parameters; During this process, the opening and closing air pressure and current and voltage parameters of each electronically controlled safety relief valve are measured simultaneously.

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