CN109695775B - Control method and device of valve actuating mechanism - Google Patents
Control method and device of valve actuating mechanism Download PDFInfo
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- CN109695775B CN109695775B CN201811610092.XA CN201811610092A CN109695775B CN 109695775 B CN109695775 B CN 109695775B CN 201811610092 A CN201811610092 A CN 201811610092A CN 109695775 B CN109695775 B CN 109695775B
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- valve
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- liquid crystal
- dot matrix
- matrix liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
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- General Engineering & Computer Science (AREA)
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- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a control method and a control device for a valve actuating mechanism, and belongs to the technical field of valves. The valve actuating mechanism is used for controlling the opening and closing of a valve, the valve actuating mechanism comprises a box body, a dot matrix liquid crystal screen, a processor, a stroke shaft, a driving mechanism and a pressure sensor, the processor, the stroke shaft, the driving mechanism and the pressure sensor are arranged in the box body, the dot matrix liquid crystal screen is respectively electrically connected with the processor, a limiting fixing plate is arranged on the stroke shaft, the pressure sensor matched with the limiting fixing plate is arranged in the box body, the driving mechanism drives the stroke shaft to enable the limiting fixing plate to support the pressure sensor when the valve is closed, and the control method of the valve comprises the following steps: in the process of controlling the driving mechanism to drive the stroke shaft, acquiring a pressure value detected by the pressure sensor; displaying the pressure value by using the dot matrix liquid crystal screen; the problem that whether the valve is closed in place is difficult to know by workers in the related technology is solved; the effect of prompting whether the valve is closed in place or not is achieved.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a control method and a control device of a valve actuating mechanism.
Background
Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow).
Currently, valves are typically not provided with a means for indicating that the valve has been opened or closed into position. Thus, it is difficult for a worker to know whether the valve has been opened or closed in place. For the manual valve, certain damage can be brought to the valve due to excessive operation of an operator; when the electric valve is damaged, the electric valve is difficult to close and difficult to find by technicians.
Disclosure of Invention
In order to solve the problem that in the prior art, a worker cannot know whether a valve is closed in place easily, the embodiment of the invention provides a control method and a control device for a valve actuating mechanism. The technical scheme is as follows:
in a first aspect, a method for controlling a valve actuator is provided, where the valve actuator is configured to control opening and closing of a valve, the valve actuator includes a box, a dot matrix liquid crystal display, a processor disposed inside the box, a stroke shaft, a driving mechanism, and a pressure sensor, the pressure sensor and the dot matrix liquid crystal display are respectively electrically connected to the processor inside the valve, a limit fixing plate is disposed on the stroke shaft, a pressure sensor engaged with the limit fixing plate is disposed inside the box, and the driving mechanism drives the stroke shaft to close the valve, where the limit fixing plate abuts against the pressure sensor, and the method includes:
in the process of controlling the driving mechanism to drive the stroke shaft, acquiring a pressure value detected by the pressure sensor;
and displaying the pressure value by using the dot matrix liquid crystal screen.
Optionally, when the pressure value reaches a predetermined threshold value, the driving mechanism is controlled to stop driving the stroke shaft.
Optionally, the valve actuator further includes a communication module, the communication module is connected to the processor, and the method further includes:
receiving a control instruction sent by external control equipment through the communication module;
when the control instruction is a valve closing instruction, controlling the driving mechanism to drive the stroke shaft to close the valve;
when the control instruction is a valve opening instruction, controlling the driving mechanism to drive the stroke shaft to open the valve;
and when the control instruction is a function menu instruction, displaying menu information corresponding to the function menu instruction on a display dot matrix liquid crystal screen according to the function menu instruction.
Optionally, the method further includes:
when the control instruction is a backlight closing instruction, closing the backlight of the dot matrix liquid crystal screen according to the backlight closing instruction;
and when the control instruction is a backlight opening instruction, opening the backlight of the dot matrix liquid crystal screen according to the backlight opening instruction.
Optionally, the method further includes:
when the dot matrix liquid crystal screen is used for displaying information, the backlight of the dot matrix liquid crystal screen is turned on;
and when the information display by the dot matrix liquid crystal screen is stopped, closing the backlight of the dot matrix liquid crystal screen.
Optionally, a flow rate detecting device is disposed on a stopping portion of the stroke shaft, and the stopping portion on the stroke shaft is used for stopping a passage in a pipeline channel from closing the pipeline passage, and the method further includes:
when a flow speed detection instruction is detected, the valve is controlled to be opened to a preset opening degree, so that the flow speed detection device extends into a pipeline to be detected;
acquiring flow velocity information detected by the flow velocity detection device;
and displaying the flow velocity information on the dot matrix liquid crystal screen.
Optionally, the method further includes:
continuously utilizing the flow rate detection device to detect the flow rate within a first time period after the valve is closed according to a valve closing instruction;
and if any flow velocity value detected by the flow velocity detection device is higher than a preset threshold value, displaying prompt information for prompting the damage of the valve on the dot matrix liquid crystal screen.
Optionally, a motor is disposed on the stroke shaft, and the method further includes:
when a self-checking instruction is detected, controlling the driving mechanism to drive the stroke shaft to close the valve;
controlling the motor to continuously vibrate for a second time, and acquiring a pressure value detected by the pressure sensor in the vibration process of the motor;
and determining whether the valve is rusted or not according to the pressure value detected by the pressure sensor.
Optionally, the determining whether the valve rusts according to the pressure value detected by the pressure sensor includes:
acquiring a maximum pressure value detected by the pressure sensor;
if the maximum pressure value reaches a limit pressure value, it is determined that the valve is rusted.
In a second aspect, there is provided a control device for a valve actuator, the control device comprising:
a memory and a processor;
at least one program instruction is stored in the memory;
the processor is configured to load and execute the at least one program instruction to implement the control method of the valve actuator according to the first aspect and any one of the optional embodiments of the first aspect.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
by providing a control method of a valve actuating mechanism, the valve actuating mechanism comprises a box body, a dot matrix liquid crystal screen, a processor arranged in the box body, a stroke shaft, a driving mechanism and a pressure sensor, wherein the pressure sensor and the dot matrix liquid crystal screen are respectively electrically connected with the processor, a limiting fixing plate is arranged on the stroke shaft, the pressure sensor matched with the limiting fixing plate is arranged in the box body, the limiting fixing plate supports against the pressure sensor when the driving mechanism drives the stroke shaft to close the valve, and the method comprises the following steps: in the process that the driving mechanism drives the stroke shaft, the processor acquires a pressure value detected by the pressure sensor and displays the pressure value by utilizing the dot matrix liquid crystal screen; the problem that whether the valve is closed in place is difficult to know by workers in the related technology is solved; the effect of prompting whether the valve is closed in place or not is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a valve actuator according to an embodiment of the present invention;
fig. 2 is a flow chart of a method of controlling a valve actuator according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides a valve actuating mechanism, which comprises a box body, a dot matrix liquid crystal display (not shown in the figure), a processor, a stroke shaft, a driving mechanism and a pressure sensor, wherein the processor, the stroke shaft, the driving mechanism and the pressure sensor are arranged in the box body, the pressure sensor and the dot matrix liquid crystal display are respectively and electrically connected with the processor, the stroke shaft is provided with a limiting fixing plate, the box body is internally provided with the pressure sensor matched with the limiting fixing plate, the driving mechanism drives the stroke shaft to close the valve, and the limiting fixing plate is abutted against the pressure sensor, wherein:
in the process that the driving mechanism drives the stroke shaft, the processor acquires a pressure value detected by the pressure sensor and displays the pressure value by utilizing the dot matrix liquid crystal screen.
In practical implementation, the driving mechanism drives the stroke shaft to rotate so as to open the valve, and the limiting fixing plate is far away from the pressure sensor. In addition, the direction of movement of the stroke shaft during opening or closing of the valve is reversed.
For example, referring to fig. 1, a stroke shaft 20, a driving mechanism (not shown) and a pressure sensor 22 are disposed in a housing 10 of the valve actuator, wherein: the driving mechanism may be a manual driving mechanism or an electric driving mechanism, and the driving mechanism can drive the stroke shaft 20 to rotate so that the stroke shaft 20 can move along the main shaft of the valve. As shown in fig. 1, the driving mechanism drives the stroke shaft 20 to close the valve, and the limit fixing plate 21 abuts against the pressure sensor 22.
Referring to fig. 2, a flowchart of a method for controlling a valve according to an embodiment of the invention is shown. As shown in fig. 2, the control method of the valve may include:
and step 210, acquiring a pressure value detected by the pressure sensor in the process of controlling the driving mechanism to drive the stroke shaft.
And step 220, displaying the pressure value by using a dot matrix liquid crystal screen.
In summary, in the method provided by the embodiment of the present invention, the pressure value detected by the pressure sensor is obtained by controlling the driving mechanism to drive the stroke shaft; displaying the pressure value by using a dot matrix liquid crystal screen; the problem that whether the valve is closed in place is difficult to know by workers in the related technology is solved; the effect of prompting whether the valve is closed in place or not is achieved.
Optionally, if the driving mechanism is an electric driving mechanism, the processor controls the driving mechanism to stop driving the stroke shaft when the pressure value detected by the pressure sensor reaches a predetermined threshold value; the analog quantity signal output of the electronic moment is increased, the higher control moment precision is achieved, and the safety of the output moment is guaranteed.
According to the embodiment provided by the invention, in the process of driving the stroke shaft by the driving mechanism, the processor acquires the pressure value detected by the pressure sensor and displays the pressure value by using the dot matrix liquid crystal screen; so that the operation of closing the valve can be stopped according to the pressure value when the manual driving valve is closed, and the valve is prevented from being damaged; when the electric drive valve is closed, the output torque can be accurately controlled, and the safety of the output torque is ensured.
In addition, the method provided by the application replaces code breaking liquid crystal by dot matrix liquid crystal, and is more flexible than code breaking liquid crystal display; according to different principles, the dot matrix is often displayed more flexibly, the manufacturing industry is also simpler, the universality is higher, and more information can be displayed.
Optionally, the valve actuator includes a communication module, the communication module is connected to the processor, wherein: the processor receives a control instruction sent by external control equipment through the communication module; and when the control command is a valve closing command, controlling the driving mechanism to drive the stroke shaft to close the valve.
Optionally, the communication module may be a communication module supported by bluetooth, infrared and other wireless communication technologies, and may also be a wired communication module. Correspondingly, when the communication module in the valve is an infrared communication module, the external control equipment can be an infrared remote controller; when the communication module inside the valve is a Bluetooth communication module, the external control equipment can be a Bluetooth remote controller; when the communication module in the valve is a wired communication module, a control panel can be arranged outside the valve box body and is connected with a processor in the valve. Wired communication among them can adopt Modbus 485 communication, and the compatibility is high, also more stable in the data transmission process moreover.
Optionally, when the control instruction received by the processor is a valve opening instruction, the driving mechanism is controlled to drive the stroke shaft to open the valve.
Optionally, when the control instruction received by the processor is a function menu instruction, menu information corresponding to the function menu instruction is displayed on the display dot matrix liquid crystal screen according to the function menu instruction. The function menu instruction can be a function parameter setting instruction, and the processor displays a setting interface corresponding to the function parameter on the dot matrix liquid crystal display screen when receiving the function parameter setting instruction.
In practical implementation, the external control equipment can independently set a key for each functional parameter, and when the key is detected to be operated, a functional parameter setting instruction of the functional parameter corresponding to the key is sent to the valve; after the valve displays the setting interface corresponding to the functional parameter, the user can adjust the functional parameter through the adjusting key or the button on the remote controller, and the setting process of the functional parameter is simplified.
Optionally, when the control instruction is a backlight turn-off instruction, the processor turns off the backlight of the dot matrix liquid crystal display according to the backlight turn-off instruction; when the control instruction is a backlight opening instruction, the processor opens the backlight of the dot matrix liquid crystal display according to the backlight opening instruction; the backlight control device has the advantages that the user can set the backlight switch at any time by operating the external control device, and the backlight control device is quite convenient and humanized.
Optionally, when the processor displays information by using the dot matrix liquid crystal screen, turning on a backlight of the dot matrix liquid crystal screen; and when the processor stops utilizing the dot matrix liquid crystal screen to display information, the backlight of the dot matrix liquid crystal screen is closed. The information mentioned here is any information displayed on the liquid crystal display, and includes, for example, a pressure value detected by a pressure sensor, menu information, and a setting interface of a function parameter.
Optionally, a flow rate detecting device is disposed on the stopping portion of the stroke shaft, and the stopping portion on the stroke shaft is used for stopping the passage in the pipeline channel from closing the pipeline passage, wherein: when the processor detects a flow velocity detection instruction, the valve is controlled to be opened to a preset opening degree, so that the flow velocity detection device extends into a pipeline to be detected; the processor acquires the flow speed information detected by the flow speed detection device; the processor displays the flow rate information on the dot matrix liquid crystal screen to increase the flow rate detection function of the valve.
Alternatively, the flow rate detection device may be a detection member for detecting the flow rate of the air flow or the water flow.
Wherein, controlling the valve to open to the preset opening degree can be realized by the following modes:
first, if the valve is in the closed state, the drive mechanism is controlled to rotate the stroke shaft (the stroke shaft is away from the pressure sensor) for a predetermined period of time to cause a portion of the stop of the stroke shaft to exit the conduit passageway. Optionally, a power mechanism in the driving mechanism is a motor, and if the valve is in a closed state, the motor is controlled to rotate for a predetermined time.
Secondly, if the valve is in a fully open state, controlling the driving mechanism to drive the valve to close; when the pressure value detected by the pressure sensor is increased, the driving mechanism is controlled to drive the stroke shaft (the stroke shaft is far away from the pressure sensor) to rotate for a preset time period, so that the stopping part of the stroke shaft leaves the pipeline passage.
Optionally, the processor continuously detects the flow rate by using the flow rate detection device within a first time period after the valve is closed according to the valve closing instruction; and if any flow velocity value detected by the flow velocity detection device is higher than a preset threshold value, displaying prompt information for prompting the damage of the valve on the dot matrix liquid crystal screen. Wherein, if any flow rate value detected by the flow rate detection device is higher than a preset threshold value, the valve can not be completely closed, water flow or air flow still passes through the valve, and the valve is damaged.
Optionally, a motor is disposed on the stroke shaft, and the method further includes: when the processor detects a self-checking instruction, the processor controls the driving mechanism to drive the stroke shaft to close the valve; the processor controls the motor to continuously rotate for a second time period, and acquires a pressure value detected by the pressure sensor in the rotation process of the motor; the processor determines whether the valve is rusted based on the pressure value detected by the pressure sensor. If the stopping part of the stroke shaft of the valve rusts, the shaking amplitude of the stopping part is reduced and the force is increased when the motor drives the stroke shaft to shake.
Optionally, the processor determines whether the valve is rusted according to the pressure value detected by the pressure sensor, including: acquiring a maximum pressure value detected by the pressure sensor; if the maximum pressure value reaches a limit pressure value, it is determined that the valve is rusted.
The present invention also provides a control device for a valve, the control device comprising:
a memory and a processor;
at least one program instruction is stored in the memory;
the processor is configured to load and execute the at least one program instruction to implement the control method of the valve according to any of the embodiments.
The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying a number of the indicated technical features. Thus, a defined feature of "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A control method of a valve actuator is characterized in that the valve actuator is used for controlling the opening and closing of a valve, the valve actuator comprises a box body, a dot matrix liquid crystal display, a processor arranged in the box body, a stroke shaft, a driving mechanism and a pressure sensor, the pressure sensor and the dot matrix liquid crystal display are respectively and electrically connected with the processor in the valve, a limit fixing plate is arranged on the stroke shaft, the pressure sensor matched with the limit fixing plate is arranged in the box body, and the limit fixing plate is abutted against the pressure sensor when the driving mechanism drives the stroke shaft to close the valve, the method comprises the following steps:
in the process of controlling the driving mechanism to drive the stroke shaft, acquiring a pressure value detected by the pressure sensor;
displaying the pressure value by using the dot matrix liquid crystal screen; a motor is arranged on the stroke shaft, and the method further comprises the following steps:
when a self-checking instruction is detected, controlling the driving mechanism to drive the stroke shaft to close the valve;
controlling the motor to continuously rotate for a second time period, and acquiring a pressure value detected by the pressure sensor in the rotation process of the motor; and determining whether the valve is rusted or not according to the pressure value detected by the pressure sensor.
2. The method of claim 1, further comprising:
and when the pressure value reaches a preset threshold value, controlling the driving mechanism to stop driving the stroke shaft.
3. The method of claim 1, wherein the valve actuator further comprises a communication module coupled to the processor, the method further comprising:
the processor receives a control instruction sent by external control equipment through the communication module;
when the control instruction is a valve closing instruction, controlling the driving mechanism to drive the stroke shaft to close the valve;
when the control instruction is a valve opening instruction, controlling the driving mechanism to drive the stroke shaft to open the valve;
and when the control instruction is a function menu instruction, displaying menu information corresponding to the function menu instruction on a display dot matrix liquid crystal screen according to the function menu instruction.
4. The method of claim 3,
when the control instruction is a backlight closing instruction, the processor closes the backlight of the dot matrix liquid crystal display according to the backlight closing instruction;
and when the control instruction is a backlight opening instruction, the processor opens the backlight of the dot matrix liquid crystal display according to the backlight opening instruction.
5. The method of claim 3, further comprising:
when the dot matrix liquid crystal screen is used for displaying information, the backlight of the dot matrix liquid crystal screen is turned on;
and when the information display by the dot matrix liquid crystal screen is stopped, closing the backlight of the dot matrix liquid crystal screen.
6. The method of claim 1, wherein a stop on the travel shaft is provided with a flow rate detection device, the stop on the travel shaft being used to stop a passage in a conduit channel from closing the conduit passage, the method further comprising:
when a flow speed detection instruction is detected, the valve is controlled to be opened to a preset opening degree, so that the flow speed detection device extends into a pipeline to be detected;
acquiring flow velocity information detected by the flow velocity detection device;
and displaying the flow velocity information on the dot matrix liquid crystal screen.
7. The method of claim 6, further comprising:
continuously utilizing the flow rate detection device to detect the flow rate within a first time period after the valve is closed according to a valve closing instruction;
and if any flow velocity value detected by the flow velocity detection device is higher than a preset threshold value, displaying prompt information for prompting the damage of the valve on the dot matrix liquid crystal screen.
8. The method of claim 1, wherein said determining whether the valve is rusted based on the pressure value detected by the pressure sensor comprises:
acquiring a maximum pressure value detected by the pressure sensor;
if the maximum pressure value reaches a limit pressure value, it is determined that the valve is rusted.
9. A control device for a valve actuator, the control device comprising:
a memory and a processor;
at least one program instruction is stored in the memory;
the processor, when loaded and executing the at least one program instruction, implements the method of controlling the valve actuator of any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610092.XA CN109695775B (en) | 2018-12-27 | 2018-12-27 | Control method and device of valve actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610092.XA CN109695775B (en) | 2018-12-27 | 2018-12-27 | Control method and device of valve actuating mechanism |
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| Publication Number | Publication Date |
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| CN109695775A CN109695775A (en) | 2019-04-30 |
| CN109695775B true CN109695775B (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811610092.XA Active CN109695775B (en) | 2018-12-27 | 2018-12-27 | Control method and device of valve actuating mechanism |
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| CN (1) | CN109695775B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033864A (en) * | 1987-11-10 | 1989-07-12 | 三菱重工业株式会社 | Testing means for operation pressure of safety valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202510811U (en) * | 2012-04-17 | 2012-10-31 | 常州汉腾自动化设备有限公司 | Intelligent electric pressure stabilizing and reducing balance valve |
| CN203147014U (en) * | 2012-12-17 | 2013-08-21 | 卓旦春 | Intelligent valve |
| US9611873B2 (en) * | 2015-03-19 | 2017-04-04 | Fisher Controls International Llc | Pressure control for partial stroke tests |
| CN207762265U (en) * | 2017-12-27 | 2018-08-24 | 成都锦汇科技有限公司 | A kind of safety-valve |
| CN208089967U (en) * | 2018-03-20 | 2018-11-13 | 良工阀门集团有限公司 | One kind is electronic to carve formula gate valve |
-
2018
- 2018-12-27 CN CN201811610092.XA patent/CN109695775B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033864A (en) * | 1987-11-10 | 1989-07-12 | 三菱重工业株式会社 | Testing means for operation pressure of safety valve |
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| CN109695775A (en) | 2019-04-30 |
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Address after: 213119 No. 76, Furong Industrial Park, Hengshanqiao Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou Chenglei Valve Technology Co.,Ltd. Address before: 213118 No. 76, Furong Industrial Park, Hengshanqiao Town, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU CHENGLEI VALVE TECHNOLOGY Co.,Ltd. |