CN110617362A - Method for detecting state of electric valve - Google Patents
Method for detecting state of electric valve Download PDFInfo
- Publication number
- CN110617362A CN110617362A CN201910855312.3A CN201910855312A CN110617362A CN 110617362 A CN110617362 A CN 110617362A CN 201910855312 A CN201910855312 A CN 201910855312A CN 110617362 A CN110617362 A CN 110617362A
- Authority
- CN
- China
- Prior art keywords
- valve
- preset
- time
- electric valve
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
-
- 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
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention belongs to the technical field of state detection of electric valves, and particularly relates to a state detection method of an electric valve. Receiving a remote control instruction, and acquiring detection current; starting timing when the detection current is larger than a first preset current value; stopping timing when the detection current is smaller than a second preset current value to obtain detection time; and determining the state of the electric valve through the detection time. The invention realizes the replacement of the valve signal, thereby avoiding the personal injury caused by the entering of maintenance personnel into a severe field and simultaneously improving the economic benefit.
Description
Technical Field
The invention belongs to the technical field of state detection of electric valves, and particularly relates to a state detection method of an electric valve.
Background
The valve is used as a control part in a fluid conveying system, has the functions of diversion, stopping, regulation, throttling and the like, and particularly has various and large quantities of industrial electric valves. Due to the influences of personnel skills, field environment, use frequency and the like, accidents caused by valve faults account for a large proportion in the actual use process, and a large amount of time cost and economic cost are consumed. For a valve with a fault, the defect is generally processed in time in a local processing mode, so that the normal function of the equipment is ensured.
However, for some areas which are inconvenient to reach the valve for on-site treatment, such as areas with high radiation dose, areas with high noise, areas with high temperature and the like, when the valve fails, personnel cannot reach the on-site treatment, the defects cannot be eliminated in time, the functions of equipment are affected, and even the production work is forced to stop.
In actual operation, the failure of many electrically operated valves is only a problem of signal feedback, and the control and function of the electrically operated valves are not affected. Therefore, when similar faults occur in the valve, an additional means is needed, the fault treatment can be completed under the condition of not stopping the valve, the function of the equipment can be ensured not to be influenced, and the economic benefit is improved; meanwhile, personal injury caused by maintenance personnel entering a severe field can be avoided.
Disclosure of Invention
The invention aims to provide a method for detecting the state of an electrically operated valve, aiming at the defect that the valve must be reached to be processed on site by the prior art under the condition of signal failure of the valve, so that the valve signal is replaced, personal injury caused by entering of maintenance personnel into a severe field is avoided, and the economic benefit is improved.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for detecting the state of an electric valve receives a remote control instruction and obtains a detection current; starting timing when the detection current is larger than a first preset current value; stopping timing when the detection current is smaller than a second preset current value to obtain detection time; and determining the state of the electric valve through the detection time.
The receiving of the remote control instruction comprises: receiving a remote valve opening control instruction and receiving a remote valve closing control instruction.
The determining the state of the electric valve by detecting the time includes: judging whether the detection time is within a preset safety time range; if the detection time is within the preset safety time range, the electric valve is normal; and if the detection time is not within the preset safety time range, the electric valve fails.
The preset safety time comprises preset safety valve opening time and preset safety valve closing time; the preset safe time is determined by the valve rod output stroke distance of the electric valve, the rotating speed of a valve motor, the transmission ratio of a transmission mechanism and the thread distance of the valve rod, or is obtained through multiple valve opening and closing tests.
The determining the state of the electric valve by detecting the time includes: receiving a remote valve opening control instruction, and judging whether the detection time is within a preset safe valve opening time range; if the detection time is within the preset safe valve opening time range, the electric valve is normally opened; if the detection time is not within the preset safe valve opening time range, the electric valve is in a valve opening fault; receiving a remote valve closing control instruction, and judging that the detection time is within a preset safe valve closing time range; if the detection time is within the preset safe valve closing time range, the electric valve is normally closed; and if the detection time is not within the preset safe valve closing time range, the electric valve is in a valve closing fault.
Before the remote control instruction is received, the method provides an electric valve state detection circuit which comprises a current transformer, a timer and a valve remote controller, wherein the timer comprises a storage unit used for storing a preset safe time range; the current transformer is connected to a power supply cable of the electric valve, and the detection current is obtained by sensing the working state of the electric valve; the timer is connected with the current transformer and is used for timing the detection current to obtain detection time; the valve remote controller is respectively connected with the electric valve and the timer and is used for sending a remote control instruction and receiving a feedback signal; when the detection current is larger than a first preset current value, timing is started to comprise the following steps: the timer starts timing when the detected current in the current transformer is larger than a first preset current value; when the detection current is smaller than a second preset current value, timing stopping comprises the following steps: and when the detected current in the current transformer is smaller than a second preset current value, the timer stops timing.
After determining the state of the electrically operated valve by detecting the time, the method further comprises: and sending a state signal of the electric valve to the valve remote controller.
After the receiving of the remote control command and the acquisition of the detection current, the method further comprises: and if the detected current is greater than a third preset current value and the duration time is greater than the preset overload safety time, the electric valve has overload fault.
After the receiving of the remote control command and the acquisition of the detection current, the method further comprises: and if the detected current value is smaller than a first preset current value and the duration time is longer than preset starting time, starting failure occurs in the electric valve.
The first preset current value, the second preset current value, the third preset current value, the preset overload safety time and the preset starting time comprise:
the first preset current value is set to be used for starting timing after the electric valve starts to act and the current transformer detects current in a line, but interference in an actual field environment is considered, so that the first preset current value is a value larger than zero and must be smaller than the minimum current of the electric valve during normal action, adjustment can be carried out according to actual conditions, and when the current transformer detects that the current is larger than the first preset current value, the electric valve can be considered to start to act;
the second preset current value is set to stop timing after the electric valve stops operating and the current transformer detects that no current exists in a line, but the interference exists in the actual field environment is considered, so that the second preset current value is a value larger than zero and must be smaller than the minimum current of the electric valve during normal operation, the second preset current value can be adjusted according to the actual situation, and when the current transformer detects that the current is lower than the second preset current value, the electric valve can be considered to stop operating;
the third preset current value is set for detecting overload current of the electric valve, when the electric valve is in overload condition and continuously exceeds the preset overload safety time and still does not disappear, the value set for protecting the motor of the electric valve is greater than the rated current of the motor of the electric valve, and the value is adjusted according to actual conditions;
the preset overload safety time is set for protecting the electric valve motor, and the shortest time for safely running the motor when the motor bears a current value larger than a third preset current value is ensured;
the preset starting time is used for monitoring the condition that the electric valve does not act after receiving a starting command, after a remote control command is issued, the electric valve starts to act after the allowed time delay, if the electric valve does not act after the allowed time is exceeded, the electric valve is indicated to have a fault, and the allowed time is the preset starting time; the preset starting time is set within the range of 0.5-2 s.
The beneficial effects obtained by the invention are as follows:
the invention relates to a method for detecting the state of an electric valve, which is used for receiving a remote control instruction and acquiring a detection current; starting timing when the detected current is larger than a first preset current value; stopping timing when the detected current is smaller than a second preset current value to obtain detection time; if the detection time is within the preset safe valve closing time range, normally closing the electric valve; and if the detection time is not within the preset safe valve closing time range, the electric valve is in a valve closing fault. By implementing the invention, the problem of valve signal failure can be processed under the condition of not stopping the valve, the failure can be processed under the premise of ensuring that the function of equipment is not influenced, and the economic benefit is improved; meanwhile, personal injury caused by maintenance personnel entering a severe field can be avoided.
Drawings
Fig. 1 is a flow chart of a method for detecting a state of an electrically operated valve according to a first embodiment of the present invention;
fig. 2 is a flow chart of a method for detecting a status of an electrically operated valve according to a second embodiment of the present invention;
fig. 3 is a flow chart of a method for detecting the status of an electrically operated valve according to a third embodiment of the present invention;
fig. 4 is a flow chart of a method for detecting the status of an electrically operated valve according to a fourth embodiment of the present invention;
fig. 5 is a flow chart of a method for detecting a status of an electrically operated valve according to a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electric valve state detection circuit according to a sixth embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
An electrically operated valve state detection method, comprising: receiving a remote control instruction, and acquiring detection current; starting timing when the detection current is larger than a first preset current value; stopping timing when the detection current is smaller than a second preset current value to obtain detection time; and determining the state of the electric valve through the detection time.
The receiving a remote control instruction comprises: receiving a remote valve opening control instruction and receiving a remote valve closing control instruction.
The determining the state of the electric valve by detecting the time includes: judging whether the detection time is within a preset safety time range; if the detection time is within the preset safety time range, the electric valve is normal; and if the detection time is not within the preset safety time range, the electric valve fails.
The preset safety time comprises preset safety valve opening time and preset safety valve closing time. The preset safe time is determined by the valve rod output stroke distance of the electric valve, the rotating speed of a valve motor, the transmission ratio of a transmission mechanism and the thread distance of the valve rod, or is obtained through multiple valve opening and closing tests.
The determining the state of the electric valve by detecting the time includes: receiving a remote valve opening control instruction, and judging whether the detection time is within a preset safe valve opening time range; if the detection time is within the preset safe valve opening time range, the electric valve is normally opened; and if the detection time is not within the preset safe valve opening time range, the electric valve is in a valve opening fault. Receiving a remote valve closing control instruction, and judging that the detection time is within a preset safe valve closing time range; if the detection time is within the preset safe valve closing time range, the electric valve is normally closed; and if the detection time is not within the preset safe valve closing time range, the electric valve is in a valve closing fault.
Prior to the receiving the remote control instruction, the method further comprises: the electric valve state detection circuit comprises a current transformer, a timer and a valve remote controller, wherein the timer comprises a storage unit for storing a preset safe time range; the current transformer is connected to a power supply cable of the electric valve, and the detection current is obtained by sensing the working state of the electric valve; the timer is connected with the current transformer and is used for timing the detection current to obtain detection time; the valve remote controller is respectively connected with the electric valve and the timer and is used for sending a remote control instruction and receiving a feedback signal. When the detection current is larger than a first preset current value, timing is started to comprise the following steps: the timer starts timing when the detected current in the current transformer is larger than a first preset current value; when the detection current is smaller than a second preset current value, timing stopping comprises the following steps: and when the detected current in the current transformer is smaller than a second preset current value, the timer stops timing.
After determining the state of the electrically operated valve by detecting the time, the method further comprises: and sending a state signal of the electric valve to the valve remote controller.
After the receiving the remote control command and acquiring the detection current, the method further comprises: and if the detected current is greater than a third preset current value and the duration time is greater than the preset overload safety time, the electric valve has overload fault.
After the receiving the remote control command and acquiring the detection current, the method further comprises: and if the detected current value is smaller than a first preset current value and the duration time is longer than preset starting time, starting failure occurs in the electric valve.
The first preset current value, the second preset current value, the third preset current value, the preset overload safety time and the preset starting time comprise:
the first preset current value is set to be used for starting timing after the mutual inductor detects current in a line after the valve starts to act, but interference in an actual field environment is considered, so that the first preset current value is a value larger than zero and must be smaller than the minimum current of the valve during normal action, adjustment can be carried out according to actual conditions, and when the mutual inductor detects that the current is larger than the first preset current value, the valve can be considered to start to act.
The second preset current value is set to stop timing after the mutual inductor detects that no current exists in a line after the valve stops acting, but interference exists in an actual field environment is considered, so that the second preset current value is a certain value larger than zero and must be smaller than the minimum current when the valve normally acts, adjustment can be performed according to actual conditions, and when the mutual inductor detects that the current is lower than the second preset current value, the valve can be considered to stop acting.
The third preset current value is set to detect the overload current of the valve, and when the overload condition of the valve occurs and the overload time continuously exceeds the preset overload safety time and still does not disappear, the value set for protecting the valve motor is greater than the rated current of the valve motor and is adjusted according to the actual condition.
The preset overload safety time is set for protecting the valve motor, and the shortest time for safely running the motor when the motor bears a current value larger than a third preset current value is ensured.
The preset starting time is used for monitoring the condition that the valve does not act after receiving a starting command, after a remote control command is issued, the valve starts to act after the allowed time, if the valve does not act after the allowed time is exceeded, the valve is indicated to be in a fault, and the allowed time is the preset starting time; the preset starting time is mainly influenced by the delay of a remote signal and the action time of a relay and a contactor, is generally millisecond-level, and can be set within the range of 0.5-2 s during field actual application.
Example one
As shown in fig. 1, in the method for detecting the state of the electrically operated valve according to the present embodiment, the detection device needs to be installed first. The detection device includes a current transformer and a timer, the current transformer is connected to a power supply cable of the electric valve, and alternatively, a phase line to which the current transformer can be connected is U, V, W three phases, which can be selected according to wiring convenience. Arranging a timer at the position of the electric valve, connecting a current transformer with the timer, and correspondingly connecting a signal receiving end and a signal feedback end of the timer, wherein the signal receiving end of the timer is connected with a valve remote controller and is used for receiving a remote control instruction sent by the valve remote controller; and the signal feedback end of the timer is connected with the feedback terminal. The timer is connected to a power supply source to supply power to the timer, and optionally, the timer can also be supplied with power by a battery pack in places where power supply is inconvenient. And after the detection devices are installed, checking to confirm that each detection device works normally. Specifically, the method for detecting the state of the electrically operated valve comprises the following steps:
and S10, receiving a remote control command and acquiring the detection current. After the detection is started, the valve remote controller sends a remote control instruction, the remote control instruction is sent to the electric valve and the timer at the same time, the electric valve starts to execute corresponding actions after receiving the remote control instruction, and the timer starts to acquire detection current after receiving the remote control instruction. The detection current is generated by a current transformer according to the operation of the electrically operated valve, and the current transformer transmits the detected current to a timer.
S20, when the detected current is greater than the first preset current value, the timer starts to time.
And S30, stopping timing when the detected current is smaller than the second preset current value, and obtaining the detection time. In this embodiment, the timer stops timing when the detected current in the current transformer is smaller than the second preset current value.
And S40, determining the state of the electric valve through the detection time. The status of the electrically operated valve includes electrically operated valve normal and electrically operated valve failure.
This embodiment is through setting up check out test set in electric valve power department, can realize in valve power department when later stage needs to detect, has avoided the maintenance personal to get into the personal damage that bad scene caused.
Example two
As shown in fig. 2, on the basis of the above embodiment, the determining the state of the electric valve by the detection time in the method for detecting the state of the electric valve according to the embodiment includes:
s4011, judging whether the detection time is within a preset safety time range. The preset safe time range is determined by the attribute of the electric valve and can be obtained through theoretical calculation or multiple tests. For the multi-rotary valve, the preset safety time range is determined by the valve rod output stroke distance of the electric valve, the rotating speed of a valve motor, the transmission ratio of a transmission mechanism and the thread distance of the valve rod. And storing the acquired preset safety time range into a storage unit of the timer for subsequent detection time judgment.
For example, if the valve rod output stroke distance of the multi-turn valve is H, the rotating speed of the valve motor is n, the transmission ratio of the transmission mechanism is i, and the thread pitch of the valve rod is H, a time point t in the preset safety time range can be obtained through the following formula:
t＝H/(n*i*h)
because the rotating speed of the valve motor is constant, the stroke of the valve can be determined by recording the valve action time, and the position information of the valve can be fed back by the stroke of the valve.
S4012, if the detection time is within the preset safe time range, the electric valve is normal;
and S4013, if the detection time is not within the preset safety time range, the electric valve fails.
In the embodiment, whether the duration time of the detection current is in a normal range is judged by setting a preset safety time range, so that whether the electric valve is normal is judged by determining the detection time, the problem of valve signal fault can be solved under the condition of not stopping the valve, the fault can be treated on the premise of ensuring that the function of equipment is not influenced, and the economic benefit is improved; meanwhile, personal injury caused by maintenance personnel entering a severe field can be avoided.
EXAMPLE III
As shown in fig. 3, the present embodiment detects the opening process of the electric valve, and determines whether the electric valve is normally opened. The method for detecting the state of the electric valve comprises the following steps:
and S102, receiving a remote valve opening control command and acquiring the detection current. After the detection is started, the valve remote controller sends a remote valve opening control instruction, the remote valve opening control instruction is simultaneously sent to the electric valve and the timer, the electric valve starts to execute corresponding valve opening action after receiving the remote valve opening control instruction, and the timer starts to acquire detection current after receiving the remote valve opening control instruction. The detection current is generated by a current transformer according to the operation of the electrically operated valve, and the current transformer transmits the detected current to a timer.
S20, when the detected current is greater than the first preset current value, the timer starts to time.
And S30, stopping timing when the detected current is smaller than the second preset current value, and obtaining the detection time. In this embodiment, the timer stops timing when the detected current in the current transformer is smaller than the second preset current value.
S4021, judging whether the detection time is within a preset safe valve opening time range. The preset safe opening time range is determined by the attribute of the electric valve and can be obtained through theoretical calculation or multiple experiments. The preset safe valve opening time range is stored in a storage unit of the timer for subsequent judgment of detection time.
S4022, if the detection time is within the preset safe valve opening time range, the electric valve is normally opened.
S4023, if the detection time is not within the preset safe valve opening time range, the electric valve fails to open.
In the embodiment, whether the detected valve opening current duration is in the normal range is judged by setting the preset valve opening safety time range, so that the judgment of whether the electric valve is normal or not is realized by detecting the valve opening time, the processing of the valve signal fault problem can be completed under the condition of not operating the valve, the fault can be processed on the premise of ensuring that the function of equipment is not influenced, and the economic benefit is improved; meanwhile, personal injury caused by maintenance personnel entering a severe field can be avoided.
Example four
As shown in fig. 4, the present embodiment detects a valve closing process of the electric valve, and then determines whether the electric valve is normally closed. The method for detecting the state of the electric valve comprises the following steps:
and S103, receiving a remote valve closing control instruction and acquiring the detection current. After the detection is started, the valve remote controller sends a remote valve closing control instruction, the remote valve closing control instruction is simultaneously sent to the electric valve and the timer, the electric valve starts to execute corresponding valve closing actions after receiving the remote valve closing control instruction, and the timer starts to acquire detection current after receiving the remote valve closing control instruction. The detection current is generated by a current transformer according to the operation of the electrically operated valve, and the current transformer transmits the detected current to a timer.
S20, when the detected current is greater than the first preset current value, the timer starts to time.
S30, stopping timing when the detection current is smaller than a second preset current value to obtain detection time; in this embodiment, the timer stops timing when the detected current in the current transformer is smaller than the second preset current value.
S4031, judging that the detection time is within a preset safety valve closing time range. The preset safety valve closing time range is determined by the attribute of the electric valve and can be obtained through theoretical calculation or multiple experiments. The preset safety valve closing time range is stored in a storage unit of the timer for subsequent judgment of detection time.
S4032, if the detection time is within the preset safe valve closing time range, normally closing the electric valve;
and S4033, if the detection time is not within the preset safe valve closing time range, the electric valve is in a valve closing fault.
In the embodiment, whether the duration time of the valve closing current is detected within a normal range is judged by setting a preset valve closing safety time range, so that whether the electric valve is normal is judged by detecting the valve closing time, the problem of valve signal fault can be solved under the condition of not stopping the valve, the fault can be treated under the condition that the function of equipment is not influenced, and the economic benefit is improved; meanwhile, personal injury caused by maintenance personnel entering a severe field can be avoided.
EXAMPLE five
As shown in fig. 5, on the basis of the above embodiment, in the method for detecting a state of an electric valve according to this embodiment, after the determining the state of the electric valve by the detection time, the method further includes:
and S50, sending the state of the electric valve. Alternatively, the status of the electrically operated valve may be transmitted via wired or wireless communication. Preferably, the wireless communication mode includes, but is not limited to, a 2G wireless transmission mode, a 3G wireless transmission mode, a 4G wireless transmission mode, a 5G wireless transmission mode, a WIFI wireless transmission mode, a bluetooth transmission mode, and the like.
In the method for detecting a state of an electrically operated valve according to some embodiments, after receiving a remote control command and obtaining a detection current, the method further includes: and if the detected current is greater than the third preset current value and the duration is greater than the preset overload safety time, the electric valve has overload fault. The third preset current value is larger than the sensing value of the current transformer when the electric valve normally acts, namely when the detected current is larger than the third preset current value, the electric valve is in an overload state.
In the method for detecting a state of an electrically operated valve according to some embodiments, after receiving a remote control command and obtaining a detection current, the method further includes: if the detected current value is always smaller than the first preset current value and the duration time is longer than the preset starting time, the electric valve has a starting fault.
In some embodiments, after determining the state of the electric valve through the detection time, the method further comprises:
the alarm is given by sound or an indicator light.
EXAMPLE six
As shown in fig. 6, the electric valve state detection circuit of the present embodiment includes a current transformer, a timer, and a valve remote controller, and the timer includes a storage unit for storing a preset safe time range. The current transformer is connected to a power supply cable of the electric valve, and the detection current is obtained by sensing the working state of the electric valve; the timer is connected with the current transformer and used for timing the detection current to obtain the detection time. The signal receiving end of the timer is correspondingly connected with the signal feedback end, wherein the signal receiving end of the timer is connected with the valve remote controller and is used for receiving a remote control instruction sent by the valve remote controller; and the signal feedback end of the timer is connected with the feedback terminal. The valve remote controller is respectively connected with the electric valve and the timer and is used for sending a remote control instruction.
If the detection time is within the preset safety time range, the electric valve is normal; and if the detection time is not within the preset safety time range, the electric valve fails. For the specific determination process, reference may be made to the above embodiments, which are not described herein again.
By implementing the invention, the problem of valve signal failure can be processed under the condition of not stopping the valve, the failure can be processed under the premise of ensuring that the function of equipment is not influenced, and the economic benefit is improved; meanwhile, personal injury caused by maintenance personnel entering a severe field can be avoided.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. A method for detecting the state of an electric valve is characterized in that: receiving a remote control instruction, and acquiring detection current; starting timing when the detection current is larger than a first preset current value; stopping timing when the detection current is smaller than a second preset current value to obtain detection time; and determining the state of the electric valve through the detection time.
2. The method for detecting the condition of an electrically operated valve as set forth in claim 1, wherein: the receiving of the remote control instruction comprises: receiving a remote valve opening control instruction and receiving a remote valve closing control instruction.
3. The method for detecting the condition of an electrically operated valve as set forth in claim 2, wherein: the determining the state of the electric valve by detecting the time includes: judging whether the detection time is within a preset safety time range; if the detection time is within the preset safety time range, the electric valve is normal; and if the detection time is not within the preset safety time range, the electric valve fails.
4. The method for detecting the condition of an electrically operated valve as set forth in claim 3, wherein: the preset safety time comprises preset safety valve opening time and preset safety valve closing time; the preset safe time is determined by the valve rod output stroke distance of the electric valve, the rotating speed of a valve motor, the transmission ratio of a transmission mechanism and the thread distance of the valve rod, or is obtained through multiple valve opening and closing tests.
5. The method for detecting the condition of an electrically operated valve as set forth in claim 4, wherein: the determining the state of the electric valve by detecting the time includes: receiving a remote valve opening control instruction, and judging whether the detection time is within a preset safe valve opening time range; if the detection time is within the preset safe valve opening time range, the electric valve is normally opened; if the detection time is not within the preset safe valve opening time range, the electric valve is in a valve opening fault; receiving a remote valve closing control instruction, and judging that the detection time is within a preset safe valve closing time range; if the detection time is within the preset safe valve closing time range, the electric valve is normally closed; and if the detection time is not within the preset safe valve closing time range, the electric valve is in a valve closing fault.
6. The method for detecting the condition of an electrically operated valve as set forth in claim 3, wherein: before the remote control instruction is received, the method provides an electric valve state detection circuit which comprises a current transformer, a timer and a valve remote controller, wherein the timer comprises a storage unit used for storing a preset safe time range; the current transformer is connected to a power supply cable of the electric valve, and the detection current is obtained by sensing the working state of the electric valve; the timer is connected with the current transformer and is used for timing the detection current to obtain detection time; the valve remote controller is respectively connected with the electric valve and the timer and is used for sending a remote control instruction and receiving a feedback signal; when the detection current is larger than a first preset current value, timing is started to comprise the following steps: the timer starts timing when the detected current in the current transformer is larger than a first preset current value; when the detection current is smaller than a second preset current value, timing stopping comprises the following steps: and when the detected current in the current transformer is smaller than a second preset current value, the timer stops timing.
7. The method for detecting the condition of an electrically operated valve as set forth in claim 6, wherein: after determining the state of the electrically operated valve by detecting the time, the method further comprises: and sending a state signal of the electric valve to the valve remote controller.
8. The method for detecting the condition of an electrically operated valve as set forth in claim 6, wherein: after the receiving of the remote control command and the acquisition of the detection current, the method further comprises: and if the detected current is greater than a third preset current value and the duration time is greater than the preset overload safety time, the electric valve has overload fault.
9. The method for detecting the condition of an electrically operated valve as set forth in claim 8, wherein: after the receiving of the remote control command and the acquisition of the detection current, the method further comprises: and if the detected current value is smaller than a first preset current value and the duration time is longer than preset starting time, starting failure occurs in the electric valve.
10. The method for detecting the condition of an electrically operated valve as set forth in claim 9, wherein: the first preset current value, the second preset current value, the third preset current value, the preset overload safety time and the preset starting time comprise:
the first preset current value is set to be used for starting timing after the electric valve starts to act and the current transformer detects current in a line, but interference in an actual field environment is considered, so that the first preset current value is a value larger than zero and must be smaller than the minimum current of the electric valve during normal action, adjustment can be carried out according to actual conditions, and when the current transformer detects that the current is larger than the first preset current value, the electric valve can be considered to start to act;
the second preset current value is set to stop timing after the electric valve stops operating and the current transformer detects that no current exists in a line, but the interference exists in the actual field environment is considered, so that the second preset current value is a value larger than zero and must be smaller than the minimum current of the electric valve during normal operation, the second preset current value can be adjusted according to the actual situation, and when the current transformer detects that the current is lower than the second preset current value, the electric valve can be considered to stop operating;
the third preset current value is set for detecting overload current of the electric valve, when the electric valve is in overload condition and continuously exceeds the preset overload safety time and still does not disappear, the value set for protecting the motor of the electric valve is greater than the rated current of the motor of the electric valve, and the value is adjusted according to actual conditions;
the preset overload safety time is set for protecting the electric valve motor, and the shortest time for safely running the motor when the motor bears a current value larger than a third preset current value is ensured;
the preset starting time is used for monitoring the condition that the electric valve does not act after receiving a starting command, after a remote control command is issued, the electric valve starts to act after the allowed time delay, if the electric valve does not act after the allowed time is exceeded, the electric valve is indicated to have a fault, and the allowed time is the preset starting time; the preset starting time is set within the range of 0.5-2 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910855312.3A CN110617362A (en) | 2019-09-11 | 2019-09-11 | Method for detecting state of electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910855312.3A CN110617362A (en) | 2019-09-11 | 2019-09-11 | Method for detecting state of electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110617362A true CN110617362A (en) | 2019-12-27 |
Family
ID=68922802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910855312.3A Pending CN110617362A (en) | 2019-09-11 | 2019-09-11 | Method for detecting state of electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110617362A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337242A (en) * | 2020-05-20 | 2020-06-26 | 天津美腾科技股份有限公司 | Blowing equipment detection method and material sorting system |
| CN111999580A (en) * | 2020-08-14 | 2020-11-27 | 佳都新太科技股份有限公司 | Detection method and device for subway platform gate, computer equipment and storage medium |
| CN113273905A (en) * | 2020-02-20 | 2021-08-20 | 九阳股份有限公司 | Control method of food processing machine |
| CN114037703A (en) * | 2022-01-10 | 2022-02-11 | 西南交通大学 | Subway valve state detection method based on two-dimensional positioning and three-dimensional attitude calculation |
| CN116293068A (en) * | 2023-05-17 | 2023-06-23 | 中核第七研究设计院有限公司 | Multiple protection valve control method and system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2553814A1 (en) * | 2010-03-29 | 2013-02-06 | Valeo Systemes De Controle Moteur | Circuit for controlling the current in an electrical control unit or the voltage on the terminals of said electrical control unit |
| CN104769302A (en) * | 2012-11-06 | 2015-07-08 | 本田技研工业株式会社 | Malfunction-detecting device and hybrid vehicle |
| CN106325116A (en) * | 2015-06-30 | 2017-01-11 | 上海梅山钢铁股份有限公司 | Remote switching type execution mechanism and control method |
| CN107654715A (en) * | 2017-10-12 | 2018-02-02 | 深圳市东震实业有限公司 | Solenoid valve control circuit and electromagnetic valve switch condition detection method |
| CN107957691A (en) * | 2017-12-26 | 2018-04-24 | 郑州春泉节能股份有限公司 | A kind of electrically operated valve proportional control apparatus and control method |
| CN207921463U (en) * | 2018-03-07 | 2018-09-28 | 武汉东川自来水科技开发有限公司 | A kind of electrically operated valve failure detector |
| CN108591570A (en) * | 2018-05-08 | 2018-09-28 | 九牧厨卫股份有限公司 | A kind of motor on-off valve control method and relevant control system |
-
2019
- 2019-09-11 CN CN201910855312.3A patent/CN110617362A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2553814A1 (en) * | 2010-03-29 | 2013-02-06 | Valeo Systemes De Controle Moteur | Circuit for controlling the current in an electrical control unit or the voltage on the terminals of said electrical control unit |
| CN104769302A (en) * | 2012-11-06 | 2015-07-08 | 本田技研工业株式会社 | Malfunction-detecting device and hybrid vehicle |
| CN106325116A (en) * | 2015-06-30 | 2017-01-11 | 上海梅山钢铁股份有限公司 | Remote switching type execution mechanism and control method |
| CN107654715A (en) * | 2017-10-12 | 2018-02-02 | 深圳市东震实业有限公司 | Solenoid valve control circuit and electromagnetic valve switch condition detection method |
| CN107957691A (en) * | 2017-12-26 | 2018-04-24 | 郑州春泉节能股份有限公司 | A kind of electrically operated valve proportional control apparatus and control method |
| CN207921463U (en) * | 2018-03-07 | 2018-09-28 | 武汉东川自来水科技开发有限公司 | A kind of electrically operated valve failure detector |
| CN108591570A (en) * | 2018-05-08 | 2018-09-28 | 九牧厨卫股份有限公司 | A kind of motor on-off valve control method and relevant control system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113273905A (en) * | 2020-02-20 | 2021-08-20 | 九阳股份有限公司 | Control method of food processing machine |
| CN111337242A (en) * | 2020-05-20 | 2020-06-26 | 天津美腾科技股份有限公司 | Blowing equipment detection method and material sorting system |
| CN111999580A (en) * | 2020-08-14 | 2020-11-27 | 佳都新太科技股份有限公司 | Detection method and device for subway platform gate, computer equipment and storage medium |
| CN111999580B (en) * | 2020-08-14 | 2023-12-01 | 佳都科技集团股份有限公司 | Method and device for detecting subway platform gate, computer equipment and storage medium |
| CN114037703A (en) * | 2022-01-10 | 2022-02-11 | 西南交通大学 | Subway valve state detection method based on two-dimensional positioning and three-dimensional attitude calculation |
| CN116293068A (en) * | 2023-05-17 | 2023-06-23 | 中核第七研究设计院有限公司 | Multiple protection valve control method and system |
| CN116293068B (en) * | 2023-05-17 | 2023-08-11 | 中核第七研究设计院有限公司 | Multiple protection valve control method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110617362A (en) | Method for detecting state of electric valve | |
| US9000611B2 (en) | Protection techniques for an electric power system | |
| RU2263925C2 (en) | Method and device for detecting short-circuit ground and calculating its resistance | |
| CN105626277B (en) | A kind of controller and method of the remote fault diagnosis of oil-electric engine group and Gernral Check-up | |
| CN108626070B (en) | Brake control method and system of wind generating set | |
| CN110410160B (en) | Load closed-loop control system and method for steam turbine set of nuclear power plant | |
| CN101858958A (en) | Intelligent device and method for monitoring vacuum circuit breaker on line | |
| CN107144757B (en) | On-line monitoring device and method for oil flow speed of gas relay | |
| CN109375575A (en) | A kind of band-type brake control method and system | |
| CN201623458U (en) | Steam turbine overspeed protector by on-line automatic detection abnormal vibration | |
| CN204495934U (en) | The detection system of consumer fault | |
| CN103490373B (en) | A kind of method preventing breaker misoperation and a kind of breaker | |
| KR101073088B1 (en) | Electric power distribution system and test method of apparatus for stabilizing electric power system | |
| CN111157816A (en) | Failure detection method and device for water inlet valve and steam box | |
| CN106990305A (en) | The dry-type air-core reactor on-line monitoring method of high-voltage power capacitor complexes | |
| CN113356943A (en) | Method for debugging host of biomass and garbage generator set | |
| CN102508064A (en) | Electrical equipment fault diagnosis method, equipment, system and engineering machinery | |
| CN112630643A (en) | Converter transformer on-load voltage regulation switch top cover state monitoring device and method | |
| CN112327076A (en) | Method for diagnosing running state of series dry type reactor based on tan delta difference | |
| CN109213128B (en) | Closed-loop control failure detection method and system | |
| CN105332744A (en) | Checking method for preventing failure of thermal process protection system of thermal generator set | |
| CN113241725B (en) | Residual current transformer coil detection method and device and residual current protection electric appliance | |
| CN205910321U (en) | Motor on -line monitoring system | |
| RU91631U1 (en) | MOTOR INSULATION CONTROL DEVICE | |
| CN107561438A (en) | A kind of diesel engine speed regulator accelerator open degree Correctness checking method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191227 |