CN113203946A - Be applicable to industrial system many valves self-checking device - Google Patents
Be applicable to industrial system many valves self-checking device Download PDFInfo
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- CN113203946A CN113203946A CN202110464396.5A CN202110464396A CN113203946A CN 113203946 A CN113203946 A CN 113203946A CN 202110464396 A CN202110464396 A CN 202110464396A CN 113203946 A CN113203946 A CN 113203946A
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- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims description 9
- 230000003993 interaction Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Abstract
The invention relates to a multi-valve self-checking device suitable for an industrial system, which is technically characterized in that: the system comprises a main control computer, a data acquisition and output unit, a plurality of valve limit switches and a plurality of valve opening position sensors; the data acquisition and output unit is connected with the valve limit switches, the valve opening position sensors, the two-position valves to be detected and the adjusting doors, the valve limit switches and the valve opening position sensors are used for detecting the states of the valves and transmitting the states to the data acquisition and output unit, the main control computer analyzes the acquired data and generates a detection control command, and the main control computer sends the detection control command to the two-position valves and the adjusting doors through the data acquisition and output unit to realize the self-checking function of the multiple valves of the industrial system. The invention opens or closes a certain valve according to the sequence by the main control computer and controls the valve to adjust the opening degree, thereby effectively carrying out the detection function of each valve.
Description
Technical Field
The invention belongs to the technical field of automatic control, relates to a valve detection device, and particularly relates to a multi-valve self-detection device suitable for an industrial system.
Background
The large-scale industrial system is usually provided with various types of valves, related monomer debugging must be carried out on various types of valves before the system is operated or started, and after the monomer debugging is finished, combined tests are carried out on all the valves according to the flow.
Because the control valves used in the industrial system include on-off valves and analog valves, such as two-position valves and regulating valves, which are divided from the control mode, and also include pneumatic valves and electric valves, etc., in the process of detecting the valves, different on-off signals and analog signals are required to control the valves, and the on-off signals and analog signals fed back by the valves are detected and processed, so as to complete the detection function of each valve in the system, which involves more control signals and data signals, and because the industrial system has many limit conditions such as temperature and flow, the prior art is difficult to effectively complete the self-detection function of each valve in the system.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the multi-valve self-checking device which is reasonable in design, accurate and reliable and can improve the working efficiency and is suitable for the industrial system.
The invention solves the technical problems in the prior art by adopting the following technical scheme:
a multi-valve self-checking device suitable for an industrial system comprises a main control computer, a data acquisition and output unit, a plurality of valve limit switches and a plurality of valve opening position sensors; the data acquisition and output unit is connected with a plurality of valve limit switches, a plurality of valve opening position sensors, a plurality of two-position valves to be detected and an adjusting door, the valve limit switches are arranged on the two-position valves and used for detecting the opening and closing states of the two-position valves and transmitting the opening and closing states to the data acquisition and output unit, the valve opening position sensors are arranged on the adjusting door and used for detecting opening signals of the adjusting door and transmitting the opening signals to the data acquisition and output unit, the data acquisition and output unit transmits the opening and closing states of the two-position valves and the opening signals of the adjusting door to the main control computer, the main control computer analyzes and generates detection control commands according to the acquired data, the main control computer transmits the detection control commands to the two-position valves and the adjusting door through the data acquisition and output unit to control the two-position valves, And adjusting the door for detection, thereby realizing the self-checking function of multiple valves of the industrial system.
The data acquisition and output unit is formed by connecting a CPU, a data acquisition board, a terminal interface and a communication port, the CPU is connected with the data acquisition board, the terminal interface and the communication port, the data acquisition board is connected with a plurality of valve limit switches and a plurality of valve opening position sensors to realize a valve state acquisition function, the CPU is connected with a plurality of two-position valves and a plurality of adjusting valves through the terminal interface and sends control commands to the valves, and the CPU is connected with a main control computer through the communication port to realize a data interaction function.
Moreover, the valve limit switch comprises a straight stroke form and an angular stroke form; the valve opening position sensor comprises a straight stroke form and an angular stroke form.
And the two-position valve comprises a two-position pneumatic valve and a two-position electric valve, and the adjusting valve comprises a pneumatic adjusting valve and an electric adjusting valve.
The invention has the advantages and positive effects that:
1. the invention respectively sends out switching value and analog quantity control signals to the two-position valve and the adjusting door through the data acquisition and output unit, detects the switching value signals and the analog quantity signals of the two-position valve and the adjusting door through the valve limit switch and the valve opening position sensor, sequentially opens or closes a certain valve through the main control computer, and controls the valve to adjust the opening, thereby effectively realizing the detection function of each valve, finally making the decision whether the self-check of the system valve passes or not, reducing the limitation of equipment signals, avoiding the occurrence of vicious accidents such as forced unremoved protection refusal and the like, and effectively ensuring the normal operation of an industrial system.
2. The invention sends a switching value control signal to the two-position valve through the main control computer, and receives a switching value feedback signal of the two-position valve within a certain time to complete the detection function of the two-position valve; the main control computer calculates the error of the sending analog quantity signal and the feedback analog quantity signal, judges whether the error is in an allowable range, and completes the detection function of the adjusting door.
3. The invention can be simultaneously connected with a plurality of two-position valves and adjusting doors, and is controlled by the main control computer to realize the automatic detection function, thereby improving the detection efficiency.
Drawings
FIG. 1 is a block diagram of a multi-valve self-test apparatus suitable for use in an industrial system in accordance with the present invention;
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A multi-valve self-checking device suitable for an industrial system is shown in figure 1 and comprises a main control computer, a data acquisition and output unit, a plurality of valve limit switches and a plurality of valve opening position sensors. The data acquisition and output unit is connected with a plurality of valve limit switches, a plurality of valve opening position sensors, a plurality of two-position valves to be detected and adjusting doors, the valve limit switches are arranged on the two-position valves and used for detecting the opening and closing states of the two-position valves and transmitting the opening and closing states to the data acquisition and output unit, the valve opening position sensors are arranged on the adjusting doors and used for detecting opening signals of the adjusting doors and transmitting the opening signals to the data acquisition and output unit, the data acquisition and output unit transmits the opening and closing states of the two-position valves and the opening signals of the adjusting doors to the main control computer, the main control computer analyzes the acquired data and generates detection control commands, and the main control computer detects the control commands and transmits the detection control commands to the two-position valves and the adjusting doors through the data acquisition and output unit, and the two-position type valve and the adjusting valve are controlled to detect, so that the self-checking function of the multiple valves of the industrial system is realized.
In this embodiment, the data acquisition and output unit is formed by connecting a CPU, a data acquisition board, a terminal interface, and a communication port, the CPU is connected to the data acquisition board, the terminal interface, and the communication port, the data acquisition board is connected to a plurality of valve limit switches and a plurality of valve opening position sensors to realize a valve state acquisition function, the CPU is connected to each two-position valve and each adjustment valve through the terminal interface and sends a control command to the two-position valve and each adjustment valve, and the CPU is connected to a main control computer through the communication port to realize a data interaction function.
The main control computer receives the opening and closing states of the two-position valve and the opening degree signals of the adjusting doors acquired by the data acquisition and output unit, analyzes and processes the opening and closing states and the opening degree signals, and sends a detection control command to the two-position valve and the adjusting doors through the data acquisition and output unit, and the main control computer is used for controlling the two-position valve and each adjusting door to work, so that the self-checking function of each valve is completed.
In this embodiment, the valve limit switch is a field instrument for detecting the valve state in the automatic control system, and is used to output the opening or closing position of the valve as a signal of the switching value, which is divided into a straight stroke and an angular stroke. The valve opening position sensor (displacement sensor) is also called a linear sensor and is a metal induction linear device, and the sensor is used for converting various valve opening physical quantities to be measured into 4-20 mA electric signals and is divided into a straight stroke and an angular stroke.
The working process of the present invention is described below by taking four two-position valves and four adjustment valves as examples:
(1) the self-checking device sends an opening instruction to the two-position valve 1, and receives the feedback of the opening position within a preset time (180 seconds), and the test is passed and enters the next step;
(2) the self-checking device sends a closing instruction to the two-position valve 1, receives closing position feedback within preset time (180 seconds), and enters the next step when the test is passed;
(3) the self-checking device sends an opening instruction to the two-position valves 2, 3, 4 and the like, receives feedback of an opening position within preset time, and enters the next step after the test is passed;
(4) the self-checking device sends a closing instruction to the two-position valves 2, 3, 4 and the like, receives closing position feedback within preset time, and enters the next step after the test is passed;
(5) the self-checking device sends a 20% opening instruction to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the instruction signal is within 2%, the test is passed, and the next step is carried out;
(6) the self-checking device sends out a 40% opening instruction to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the instruction signal is within 2%, the test is passed, and the next step is carried out;
(7) the self-checking device sends a 60% opening instruction to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the instruction signal is within 2%, the test is passed, and the next step is carried out;
(8) the self-checking device sends an 80% opening instruction to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the instruction signal is within 2%, the test is passed, and the next step is carried out;
(9) the self-checking device sends a 100% opening instruction to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the instruction signal is within 2%, the test is passed, and the next step is carried out;
(10) the self-checking device sends an 80% opening instruction to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the instruction signal is within 2%, the test is passed, and the next step is carried out;
(11) the self-checking device sends a 60% opening instruction to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the instruction signal is within 2%, the test is passed, and the next step is carried out;
(12) the self-checking device sends out a 40% opening instruction to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the instruction signal is within 2%, the test is passed, and the next step is carried out;
(13) the self-checking device sends a 20% opening instruction to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the instruction signal is within 2%, the test is passed, and the next step is carried out;
(14) the self-checking device sends out a 0% opening command to the adjusting doors 1, 2, 3, 4 and the like, receives opening feedback within preset time (5 seconds), the error between the feedback and the command signal is within 2%, the test is passed, and the next step is carried out;
(15) the self-checking device opens the valve 1 according to the program, closes the valve 2 after 3 minutes, opens the adjusting door 3 to the opening degree of 20% after 3 minutes, opens the adjusting door 4 to the opening degree of 75% after 10 seconds, and enters the next step after 10 seconds;
(16) all tests were completed and the system valve self-check passed.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (4)
1. The utility model provides a be applicable to industry system many valves self-checking device which characterized in that: the system comprises a main control computer, a data acquisition and output unit, a plurality of valve limit switches and a plurality of valve opening position sensors; the data acquisition and output unit is connected with a plurality of valve limit switches, a plurality of valve opening position sensors, a plurality of two-position valves to be detected and an adjusting door, the valve limit switches are arranged on the two-position valves and used for detecting the opening and closing states of the two-position valves and transmitting the opening and closing states to the data acquisition and output unit, the valve opening position sensors are arranged on the adjusting door and used for detecting opening signals of the adjusting door and transmitting the opening signals to the data acquisition and output unit, the data acquisition and output unit transmits the opening and closing states of the two-position valves and the opening signals of the adjusting door to the main control computer, the main control computer analyzes and generates detection control commands according to the acquired data, the main control computer transmits the detection control commands to the two-position valves and the adjusting door through the data acquisition and output unit to control the two-position valves, And adjusting the door for detection, thereby realizing the self-checking function of multiple valves of the industrial system.
2. The self-checking device for multiple valves in industrial system according to claim 1, wherein: the data acquisition and output unit is formed by connecting a CPU, a data acquisition board, a terminal interface and a communication port, the CPU is connected with the data acquisition board, the terminal interface and the communication port, the data acquisition board is connected with a plurality of valve limit switches and a plurality of valve opening position sensors to realize a valve state acquisition function, the CPU is connected with a plurality of two-position valves and a plurality of adjusting doors through the terminal interface and sends control commands to the valves, and the CPU is connected with a main control computer through the communication port to realize a data interaction function.
3. A multi-valve self-checking device suitable for industrial systems according to claim 1 or 2, characterized in that: the valve limit switch comprises a straight stroke form and an angular stroke form; the valve opening position sensor comprises a straight stroke form and an angular stroke form.
4. A multi-valve self-checking device suitable for industrial systems according to claim 1 or 2, characterized in that: the two-position valve comprises a two-position pneumatic valve and a two-position electric valve, and the adjusting valve comprises a pneumatic adjusting valve and an electric adjusting valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110464396.5A CN113203946A (en) | 2021-04-28 | 2021-04-28 | Be applicable to industrial system many valves self-checking device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110464396.5A CN113203946A (en) | 2021-04-28 | 2021-04-28 | Be applicable to industrial system many valves self-checking device |
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| Publication Number | Publication Date |
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| CN113203946A true CN113203946A (en) | 2021-08-03 |
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| CN202110464396.5A Pending CN113203946A (en) | 2021-04-28 | 2021-04-28 | Be applicable to industrial system many valves self-checking device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915405A (en) * | 2021-11-10 | 2022-01-11 | 山东中烟工业有限责任公司 | Self-checking system and method for pneumatic ball valve of flavoring and feeding pipeline |
-
2021
- 2021-04-28 CN CN202110464396.5A patent/CN113203946A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915405A (en) * | 2021-11-10 | 2022-01-11 | 山东中烟工业有限责任公司 | Self-checking system and method for pneumatic ball valve of flavoring and feeding pipeline |
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