CN106369219B - Electromagnetic impulse valve detection method and detecting system - Google Patents
Electromagnetic impulse valve detection method and detecting system Download PDFInfo
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- CN106369219B CN106369219B CN201610794625.9A CN201610794625A CN106369219B CN 106369219 B CN106369219 B CN 106369219B CN 201610794625 A CN201610794625 A CN 201610794625A CN 106369219 B CN106369219 B CN 106369219B
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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
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
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Abstract
Present invention is disclosed a kind of electromagnetic impulse valve detection method and detecting system, the method includes：S1, electromagnetic impulse valve return pulse signal, valve are opened, and discharge divides the pressed gas in gas tank, divides the pressure of gas tank to be down to P1 by P2, the second chamber pressure is down to P4 by P2；Valve is closed after S2, pulse signal ends, the pressure divided in gas tank is restored by P1 to P2, and the second chamber pressure is restored by P4 to P2；S3, the electric signal that pressure monitoring device is sent out can be received by signal receiving device judge whether electromagnetic impulse valve is abnormal；If S4, signal receiving device can not receive the electric signal that pressure monitoring device is sent out, electromagnetic impulse valve exception is judged.The present invention receives the electric signal of pressure monitoring device using signal receiving device, and the time that electric signal can be sent out according to pressure monitoring device judges whether electromagnetic impulse valve is abnormal, easy to detect.
Description
Technical field
The invention belongs to electromagnetic impulse valve technical fields, and in particular to a kind of electromagnetic impulse valve detection method and detection system
System.
Background technology
Electromagnetic impulse valve is the core component in sack cleaner soot cleaning system, mainly by electromagnetic coil, pilot head component,
The components such as guide's valve seat, valve deck and valve seat form, wherein the diaphragm unit of working chamber or piston component, spring or other exercise groups
Part etc. is to determine valve performance and the most important element in service life, because they are in for a long time in high pressure, high-frequency reciprocating motion,
Prolonged work can cause the rupture of diaphragm of diaphragm unit, the rubber supporting spring of diaphragm unit to be struck bad and aging, spring breakage
Etc. fatal defect, the quality of electromagnetic impulse valve is severely impacted.
If prior art electromagnetic impulse valve breaks down, the electromagnetic impulse valve of failure need to be found first, then will be gone out
The electromagnetic impulse valve of existing failure is dismantled, and is then detected successively to each component of electromagnetic impulse valve, electromagnetic impulse valve
Component is more, and detection is relatively complicated, and disassembly and assembly is inconvenient, greatly reduces detection efficiency.
Invention content
The purpose of the present invention is to provide a kind of electromagnetic impulse valve detection method and detecting systems, with easily to electromagnetism arteries and veins
Valve is rushed to be detected.
To achieve the goals above, technical solution provided in an embodiment of the present invention is as follows：
A kind of electromagnetic impulse valve detection method, the method includes：
S1, electromagnetic impulse valve return pulse signal, valve are opened, and discharge divides the pressed gas in gas tank, divides the pressure of gas tank
Power is down to P1 by P2, and the second chamber pressure is down to P4 by P2；
Valve is closed after S2, pulse signal ends, the pressure divided in gas tank is restored by P1 to P2, and the second chamber pressure is by P4
Restore to P2；
S3, the electric signal that pressure monitoring device is sent out can be received by signal receiving device judge that electromagnetic impulse valve is
No exception；
If S4, signal receiving device can not receive the electric signal that pressure monitoring device is sent out, electromagnetic impulse valve is judged
It is abnormal.
As a further improvement on the present invention, the electromagnetic impulse valve include at least extremely electromagnetic coil occur it is abnormal, the
One diaphragm is abnormal, the first damping hole plug, pilot head component are stuck or one kind in being not switched on.
As a further improvement on the present invention, the step S3 further includes：
Choose pressure monitoring device so that the critical-point pressure P3 that pressure monitoring device sends out electric signal is the second cavity
Pressure is down to a certain pressure value in 0 pressure drop process by P2.
As a further improvement on the present invention, the pressure monitoring device send out electric signal critical-point pressure P3 and P1,
The size of P2 meets P3 ＜ P1 ＜ P2 and sentences if signal receiving device can not receive the electric signal that pressure monitoring device is sent out
Determine electromagnetic impulse valve exception.
As a further improvement on the present invention, the pressure monitoring device send out electric signal critical-point pressure P3 and P1,
The size of P2 meets P1≤P3 ＜ P2 and sentences if signal receiving device can not receive the electric signal that pressure monitoring device is sent out
Determine electromagnetic impulse valve exception.
As a further improvement on the present invention, the time of electromagnetic impulse valve return pulse signal is Δ T in the step S1,
Δ T is determined by electromagnetic impulse valve.
As a further improvement on the present invention, valve, electromagnetic impulse valve are closed after pulse signal ends in the step S2
Evacuation time is less than T2, and T2 is the time threshold set according to different electromagnetic impulse valves.
The technical solution that another embodiment of the present invention provides is as follows：
A kind of electromagnetic impulse valve detecting system, the system comprises：
Electromagnetic impulse valve, including electromagnetic coil, pilot head component, guide's valve seat, valve deck and valve seat, between valve deck and valve seat
Equipped with primary diaphragm and the first spring, secondary diaphragm and second spring, electromagnetic impulse valve packet are equipped between valve deck and guide's valve seat
Include the first cavity below the primary diaphragm, the second cavity above primary diaphragm and the above secondary diaphragm
Three cavitys, primary diaphragm are equipped with the first damping hole of connection the first cavity and the second cavity, and secondary diaphragm is equipped with connection the
Second damping hole of two cavitys and third cavity；
Divide gas tank, it is described that gas tank is divided to be fixedly mounted with valve seat, and be connected with the first cavity；
Pressure monitoring device is fixedly installed on valve deck, for detecting the gas pressure in the second cavity；
Signal receiving device is electrically connected, the pressure detected for receiving pressure monitoring device with pressure monitoring device
Data.
As a further improvement on the present invention, the signal receiving device passes through wired or wireless with pressure monitoring device
Mode is electrically connected.
Compared with prior art, the invention has the advantages that：
By installing pressure monitoring device on the valve deck of electromagnetic impulse valve, and receives pressure using signal receiving device and supervise
The electric signal for surveying device, the time that electric signal can be sent out according to pressure monitoring device judge whether electromagnetic impulse valve is abnormal, inspection
It is convenient to survey；
Pressure monitoring device is directly mounted on valve deck, easy for installation, and manufacturing cost is relatively low, and does not interfere with electromagnetism
The original structure and performance of pulse valve.
Description of the drawings
Fig. 1 is the structural schematic diagram of electromagnetic impulse valve detecting system in the embodiment of the invention；
Fig. 2 is the peace of electromagnetic impulse valve and pressure monitoring device and signal receiving device in the embodiment of the invention
Assembling structure schematic diagram；
Fig. 3 is the partial structural diagram of electromagnetic impulse valve in the embodiment of the invention；
Fig. 4 is the flow diagram of electromagnetic impulse valve detection method in the embodiment of the invention；
Fig. 5 is the flow diagram of electromagnetic impulse valve detection method in another specific implementation mode of the present invention；
Fig. 6 is the flow diagram of electromagnetic impulse valve detection method in yet another embodiment of the present invention.
Specific implementation mode
Below with reference to specific implementation mode shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally
Transformation is included within the scope of protection of the present invention.
In each diagram of the present invention, for the ease of illustration, structure or partial certain sizes can be relative to other knots
Therefore structure or partial enlargement are only used for the basic structure of diagram subject of the present invention.
The term of the representation space relative position used herein such as "upper", " top ", "lower", " lower section " is for just
A unit as shown in the drawings or feature are described relative to another unit or the relationship of feature in the purpose of explanation.It is empty
Between the term of relative position can be intended to include different direction of the equipment in use or work other than orientation as shown in the figure.
For example, if the equipment in figure overturn, the unit for being described as being located at other units or feature " below " or " under " will
Positioned at other units or feature " top ".Therefore, exemplary term " lower section " can include above and below both orientation.If
It is standby to be otherwise directed（It is rotated by 90 ° or other directions）, and be interpreted accordingly used herein and space correlation
Description.
It should be understood that although term first, second etc. can be used to describe herein various elements or structure,
But these are described object and should not be limited by these terms.These terms are only used to these description objects are distinguished from each other
It opens.For example, the first cavity can be referred to as the second cavity, and similarly the second cavity can also be referred to as the first cavity, this
Without departing from protection scope of the present invention.
Join shown in Fig. 1, electromagnetic impulse valve detecting system includes that F1 ~ F6 is arranged in order for 6 totally in an embodiment of the present invention
Electromagnetic impulse valve 100, each electromagnetic impulse valve 100 be connected with gas tank 101 is divided, pressure is equipped on electromagnetic impulse valve 100
Power monitoring device 102, pressure monitoring device 102 are electrically connected with signal receiving device 103 respectively, and pressure monitoring device 102 is examined
The gas pressure in electromagnetic impulse valve is surveyed, signal receiving device 103 is for receiving the number pressure that pressure monitoring device 102 detects
According to.
Preferably, the pressure monitoring device in the present invention is connect with pressure switch, signal receiving device with pressure switch signal
It is illustrated for receiving apparatus, pressure monitoring device and signal receiving device may be other monitorings in other embodiments
Pressure data and the device for receiving pressure data, no longer citing illustrates in detail herein.
In addition, pressure monitoring device 102 is electrically connected with signal receiving device 103 by electric wire in present embodiment,
It is attached by way of wire transmission, can also be connected by way of wireless transmission in other embodiments
It connects, is no longer described in detail herein.
Electromagnetic impulse valve air source operating pressure is 0.2Mpa ~ 0.6Mpa in present embodiment, as shown in Figure 1, working as electromagnetism arteries and veins
When rushing valve (F1) and receiving pulse signal（The electric signal time, Δ T was determined by electromagnetic impulse valve, under normal conditions for 0.05S ~
0.15S）, valve opens, and discharge divides pressed gas in gas tank, and valve, entire electromagnetic impulse valve row are closed after electric signal
The gas time is less than T2（T2 is the time threshold set according to different electromagnetic impulse valves, can usually be set as 1S）, divide the pressure in gas tank
Power moment is by initial pressure P2（Divide air box pressure after electromagnetic pulse valve exhaust）It is down to P1（Divide gas tank pressure before electromagnetic pulse valve exhaust
Power）, accordingly the second chamber pressure is down to P4 by P2, and is restored to P2 in the short time, and accordingly the second chamber pressure is by P4
Restore to P2.After electromagnetic impulse valve (F1) terminates to be vented, similarly electromagnetic impulse valve (F2) receives pulse signal and starts successively
Work, and so on, until all electromagnetic impulse valves terminate to be vented.
It should be understood that being illustrated by taking 6 electromagnetic impulse valves as an example in present embodiment, in other embodiment
In, the quantity of electromagnetic impulse valve can be arranged as required to as other quantity, and no longer citing illustrates one by one herein.
The electromagnetic impulse valve detecting system in present embodiment is described further below in conjunction with shown in Fig. 2, Fig. 3.
Electromagnetic impulse valve detecting system includes electromagnetic impulse valve 100, divides gas tank 101, pressure monitoring device 102 and signal
Reception device 103.
Wherein, electromagnetic impulse valve 100 includes valve seat 1, primary diaphragm 2, valve deck 3, the first spring 4, guide's valve seat 5, second
The components such as diaphragm 6, second spring 7, electromagnetic coil 8, pilot head component 9.
Specifically, valve deck 3 is fixedly mounted with valve seat 1 by bolt 14 and flat shim 15, also solid between valve deck 3 and valve seat 1
Dingan County is equipped with primary diaphragm 2, and primary diaphragm 2 is equipped with the first damping hole 16, and valve deck 3 and valve seat 1 are enclosed the chamber set by primary diaphragm 2
Body is divided into the first cavity a and the second cavity b, the first cavity a is located at the lower section of primary diaphragm 2, and the second cavity b is located at primary diaphragm
2 top, the first cavity a and the second cavity b are interconnected by the first damping hole 16.Between primary diaphragm 2 and valve deck 3 also
Equipped with the first spring 4, it is additionally provided with pressure relief vent 18 on valve deck 3, after the completion of being vented in the second cavity b, the first spring 4 is in compression
State, at this point, the first spring 4 provides downward elastic force so that primary diaphragm 2 gradually resets.
The top of valve deck 3 is fixed to have guide's valve seat 5 by chapter, and in present embodiment, valve deck 3 passes through screw 13 with guide's valve seat 5
It is fixedly mounted.Secondary diaphragm 6, shape between secondary diaphragm 6 and guide's valve seat 5 are installed between valve seat 3 and guide's valve seat 5
At there is a third cavity c, secondary diaphragm 6 is equipped with the second damping hole 17 for the second cavity b and third cavity c to be connected, and second
Second spring 7 is additionally provided between diaphragm 6 and guide's valve seat 5.After gas excludes in third cavity c, second spring 7 is in compression
State, at this point, second spring 7 provides downward elastic force so that secondary diaphragm 6 gradually resets.
Pilot head component 9 is fixedly installed in by screw 12 on guide's valve seat 5, and pilot head component 9 is additionally provided with and third chamber
The unloading hole that body c is connected（Non- label）, pilot head component 9 is externally provided with electromagnetic coil 8, and the top of electromagnetic coil 8 passes through snap ring
10 buckle with pilot head component 9, and the lower part of electromagnetic coil 8 is assembled by wave spring washer 11 and pilot head component 9.Separately
Outside, it is also associated with electrical signal line on electromagnetic coil 8, to control the work of electromagnetic coil.
Valve seat 1 in the present invention, which is mounted on, to be divided on gas tank 101, when divide pour pressed gas in gas tank 101 when, gas is rapid
Into in the first cavity a, meanwhile, gas is entered by the first damping hole 16 on primary diaphragm 2 in the second cavity b, then gas
Body is entered by the second damping hole 17 on secondary diaphragm 6 in third cavity c, until the first cavity a, the second cavity b, third chamber
Body c reaches equilibrium state, and the gas pressure intensity in the first cavity a, the second cavity b, third cavity c is equal at this time.
After electromagnetic impulse valve is powered, electromagnetic coil 8 receives electric signal by electrical signal line and generates magnetic field, in electromagnetism
Pilot head component 9 acts under the action of power, so that the gas in third cavity c is discharged by unloading hole, and then secondary diaphragm 6 separates
The second cavity b and third cavity c break balance, according to pressure F=pressure P × area S, the pressure of the lower section of secondary diaphragm 6 is more than
The pressure of 6 top of secondary diaphragm, second spring 7 are in compressive state, and gas is discharged from the second cavity b by pressure relief vent 18.
In addition, gas pressure intensity in the second cavity b reduces, according to pressure F=pressure P × area S, 2 top of primary diaphragm
Pressure is less than the pressure of 2 lower section of primary diaphragm, and the first spring 4 is in compressive state, and primary diaphragm is under the action of pressure, upwards
Movement（Valve is in opening state at this time）, the first cavity a and what is be connected to the first cavity divide gas tank internal gas by first
The exhaust outlet of cavity a is discharged, and carries out air flow blowing work.In the process, divide the pressure of gas tank by P2（Electromagnetic pulse valve exhaust
Before divide air box pressure）It is down to P1（Divide air box pressure after electromagnetic pulse valve exhaust）.
After electromagnetic impulse valve powers off, electromagnetic coil 8 is disappeared by not receiving electric signal, electromagnetic force, pilot head component 8
It resets to block unloading hole, the first cavity a, the second cavity b, gas injection in third cavity c, and reaches new balance, first
Spring 4 and second spring 7 reset respectively.
In the electromagnetic impulse valve detecting system of the present invention, pressure monitoring device 102, pressure monitoring are installed on valve deck 3
Device 102 is used to detect the gas pressure in the second cavity b.
Meanwhile pressure monitoring device 102 is electrically connected with signal receiving device 103, signal receiving device 103 receives pressure
The pressure data that monitoring device 102 detects, pressure data include pressure value and electric signal time.
It needs to choose suitable pressure monitoring device in the present invention so that pressure monitoring device sends out the critical of electric signal and presses
Power P3 is that the pressure of the second cavity is down to a certain pressure value in the pressure drop process of P4 by P2, i.e. pressure monitoring device need to be according to difference
Demand choose P4 ~ P2 in a certain pressure value.
The receiving side signal formula of pressure monitoring device 102 and signal receiving device 103 is specially：
When pressure monitoring device 102 is in pressure value ＞ P3（Pressure monitoring device sends out the critical-point pressure of electric signal）When,
Pressure monitoring device 102 is normally open, at this point, signal receiving device 103 can not receive electric signal；
When pressure monitoring device 102 is in pressure value≤P3（Pressure monitoring device sends out the critical-point pressure of electric signal）When,
Pressure monitoring device 102 is normally off, at this point, the reception of pressure monitoring device signal fills 103 and receives electric signal and remember
The electric signal time（T）；
When pressure monitoring device 102 is when pressure value is restored to ＞ P3 from≤P3, pressure monitoring device is extensive from normally off
Normally open is arrived again, and signal receiving device 103 can not receive electric signal at this time.
In this way, by the setting of pressure monitoring device and signal receiving device, can be connect according to signal receiving device
It receives the electric signal of pressure monitoring device and receives the time of pressure monitoring device electric signal to detect electromagnetic impulse valve work
Whether work is abnormal, elaborates below specific detection method.
Join shown in Fig. 4, in the embodiment of the invention, detection method includes the following steps for electromagnetic impulse valve：
S1, electromagnetic impulse valve return pulse signal, valve are opened, and discharge divides the pressed gas in gas tank, divides the pressure of gas tank
Power is by P2（Divide air box pressure before electromagnetic pulse valve exhaust）It is down to P1（Divide air box pressure after electromagnetic pulse valve exhaust）；
Valve is closed after S2, pulse signal ends, divides the pressure in gas tank by P1（Divide gas tank pressure after electromagnetic pulse valve exhaust
Power）Restore to P2（Divide air box pressure before electromagnetic pulse valve exhaust）；
S3, the time T that pressure monitoring device sends out signal is received by signal receiving device, and according to pressure monitoring device
The time T for sending out signal judges the working condition of electromagnetic impulse valve；
If the time T that S4, pressure monitoring device send out signal is less than predetermined threshold value, electromagnetic impulse valve work is being judged just
Often.
Suitable pressure monitoring device is chosen in present embodiment so that pressure monitoring device sends out the critical point of electric signal
Pressure P3 is that the pressure of the second cavity is down to a certain pressure value in the pressure drop process of P4 by P2, and predetermined threshold value also needs to consider according to pressure
Power monitoring device sends out the magnitude relationship of the critical-point pressure P3 and P2, P1 of electric signal, specifically, can be divided into two kinds of situations：
When P3 ＜ P1 ＜ P2, predetermined threshold value is the first predetermined threshold value T0；
When P1≤P3 ＜ P2, predetermined threshold value is the second predetermined threshold value T1+T0；
Wherein, T1 is restored to the time more than P3 for point air box pressure after electromagnetic pulse valve exhaust, and T0 is true according to experience
The fixed compensation time.
Preferably, the time of electromagnetic impulse valve return pulse signal is 0.05S ~ 0.15S, pulse signal in present embodiment
After close valve, electromagnetic impulse valve evacuation time is less than 1S.T0 is rule of thumb illustrated by taking 1S as an example, the first default threshold
Value T0 is 1S, and the second predetermined threshold value T1+T0 is T1+1S.
In this way, step S4 is specifically divided into two kinds of situations：
As P3 ＜ P1 ＜ P2, if the time T that pressure monitoring device sends out signal is less than the first predetermined threshold value 1S, judge
Electromagnetic impulse valve is working properly；
As P1≤P3 ＜ P2, if the time T that pressure monitoring device sends out signal is less than the second predetermined threshold value T1+1S,
Judge that electromagnetic impulse valve is working properly.
In another embodiment of the present invention, if there is the second damping hole 17 leakage on secondary diaphragm 6, the second bullet
Spring 7 be abnormal or 9 non-normal reset of pilot head component, air source deficiency when, pressure monitoring device send out signal when
Between T can be more than predetermined threshold value, therefore, receive pressure monitoring device by detecting signal receiving device and send out the time T of signal, also
It may determine that whether electromagnetic impulse valve above-mentioned exception occurs.
Join shown in Fig. 5, specific detection method includes the following steps：
S1, electromagnetic impulse valve return pulse signal, valve are opened, and discharge divides the pressed gas in gas tank, divides the pressure of gas tank
Power is by P2（Divide air box pressure before electromagnetic pulse valve exhaust）It is down to P1（Divide air box pressure after electromagnetic pulse valve exhaust）；
Valve is closed after S2, pulse signal ends, divides the pressure in gas tank by P1（Divide gas tank pressure after electromagnetic pulse valve exhaust
Power）Restore to P2（Divide air box pressure before electromagnetic pulse valve exhaust）；
S3, the time T that pressure monitoring device sends out signal is received by signal receiving device, and according to pressure monitoring device
The time T for sending out signal judges whether electromagnetic impulse valve is abnormal；
If the time T that S4, pressure monitoring device send out signal is greater than or equal to predetermined threshold value, judge that electromagnetic impulse valve is different
Often（Second damping hole leakage on secondary diaphragm, second spring be abnormal, the non-normal reset of pilot head component, air source deficiency etc.
In it is one or more）.
Similarly, suitable pressure monitoring device is chosen so that pressure monitoring device sends out the critical-point pressure of electric signal
P3 is that the pressure of the second cavity is down to a certain pressure value in the pressure drop process of P4 by P2, and predetermined threshold value consideration is filled according to pressure monitoring
The magnitude relationship for setting the critical-point pressure P3 and P2, P1 that send out electric signal can be divided into two kinds of situations：
When P3 ＜ P1 ＜ P2, predetermined threshold value is the first predetermined threshold value T0；
When P1≤P3 ＜ P2, predetermined threshold value is the second predetermined threshold value T1+T0；
Wherein, T1 is restored to the time more than P3 for point air box pressure after electromagnetic pulse valve exhaust, and T0 is true according to experience
The fixed compensation time.
Preferably, the time of electromagnetic impulse valve return pulse signal is 0.05S ~ 0.15S, pulse signal in present embodiment
After close valve, electromagnetic impulse valve evacuation time is less than 1S.T0 is rule of thumb illustrated by taking 1S as an example, the first default threshold
Value T0 is 1S, and the second predetermined threshold value T1+T0 is T1+1S.
Wherein, step S4 is specifically divided into two kinds of situations：
As P3 ＜ P1 ＜ P2, if the time T that pressure monitoring device sends out signal is greater than or equal to the first predetermined threshold value 1S,
Then judge electromagnetic impulse valve exception（Second damping hole leakage on secondary diaphragm, second spring be abnormal, pilot head component not just
It is often one or more in reset etc.）；
As P1≤P3 ＜ P2, if the time T that pressure monitoring device sends out signal is greater than or equal to the second predetermined threshold value T1+
1S then judges electromagnetic impulse valve exception（The second damping hole leaks on secondary diaphragm, second spring is abnormal, pilot head component
It is one or more in non-normal reset etc.）.
After there are electromagnetic impulse valve abnormal conditions, in time to the second damping hole, second spring, pilot head group on secondary diaphragm
Part is overhauled, until the time T that pressure monitoring device sends out signal is less than predetermined threshold value, electromagnetic impulse valve normal work.
In the yet another embodiment of the present invention, if electromagnetic coil 8 occur exception occurs, primary diaphragm 2 is abnormal,
First damping hole 16 blocks, pilot head component 9 is stuck or when being not switched on, pressure monitoring device 102 is permanent big in pressure value
In P3（Pressure monitoring device sends out the critical-point pressure of electric signal）, at this point, signal receiving device 103 can not receive telecommunications
Number.Therefore, it detects whether pressure monitoring device sends out signal by detecting signal receiving device, can also judge electromagnetic impulse valve
Whether above-mentioned exception is occurred.
Join shown in Fig. 6, specific detection method includes the following steps：
S1, electromagnetic impulse valve return pulse signal, valve are opened, and discharge divides the pressed gas in gas tank, divides the pressure of gas tank
Power is by P2（Divide air box pressure before electromagnetic pulse valve exhaust）It is down to P1（Divide air box pressure after electromagnetic pulse valve exhaust）；
Valve is closed after S2, pulse signal ends, divides the pressure in gas tank by P1（Divide gas tank pressure after electromagnetic pulse valve exhaust
Power）Restore to P2（Divide air box pressure before electromagnetic pulse valve exhaust）；
S3, the electric signal that pressure monitoring device is sent out can be received by signal receiving device judge that electromagnetic impulse valve is
No exception；
If S4, signal receiving device can not receive the electric signal that pressure monitoring device is sent out, electromagnetic impulse valve is judged
It is abnormal（There is exception in electromagnetic coil, primary diaphragm is abnormal, the first damping hole plug, pilot head component is stuck or is not switched on
It is one or more in）.
Similarly, suitable pressure monitoring device is chosen in present embodiment so that pressure monitoring device sends out electric signal
Critical-point pressure P3 be that the pressure of the second cavity is down to a certain pressure value in the pressure drop process of P4 by P2, pressure monitoring device hair
The magnitude relationship for going out the critical-point pressure P3 and P2, P1 of electric signal can be divided into two kinds of situations：P3 ＜ P1 ＜ P2 and P1≤P3 ＜
P2；
In above-mentioned two situations, the electric signal that pressure monitoring device is sent out can be received by signal receiving device to sentence
Whether disconnected electromagnetic impulse valve is abnormal, and detection and judgment method are identical, are no longer repeated in detail herein.
Preferably, the time of electromagnetic impulse valve return pulse signal is 0.05S ~ 0.15S, pulse signal in present embodiment
After close valve, electromagnetic impulse valve evacuation time is less than 1S.
After there are electromagnetic impulse valve abnormal conditions, in time to electromagnetic coil, primary diaphragm, the first damping hole, pilot head group
Part is overhauled, until signal receiving device receives the electric signal that pressure monitoring device is sent out, electromagnetic impulse valve normal work.
It should be understood that illustrated for diaphragm valve electromagnetic impulse valve in the above embodiment, certainly, this
Invention is equally applicable to piston type electromagnetic pulse valve, and the piston in corresponding piston type electromagnetic pulse valve is equivalent to above-mentioned embodiment party
Diaphragm in formula, no longer citing is described in detail one by one herein.
The present invention is had the advantages that by the above embodiment：
By installing pressure monitoring device on the valve deck of electromagnetic impulse valve, and receives pressure using signal receiving device and supervise
The electric signal for surveying device, the time that electric signal can be sent out according to pressure monitoring device judge whether electromagnetic impulse valve is abnormal, inspection
It is convenient to survey；
Pressure monitoring device is directly mounted on valve deck, easy for installation, and manufacturing cost is relatively low, and does not interfere with electromagnetism
The original structure and performance of pulse valve.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiment of understanding.
The series of detailed descriptions listed above only for the present invention feasible embodiment specifically
Bright, they are all without departing from equivalent implementations made by technical spirit of the present invention not to limit the scope of the invention
Or change should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of electromagnetic impulse valve detection method, which is characterized in that the method includes：
S1, electromagnetic impulse valve return pulse signal, valve are opened, and discharge divides pressed gas in gas tank, divide the pressure of gas tank by
P2 is down to P1, and the second chamber pressure is down to P4 by P2；
Valve is closed after S2, pulse signal ends, the pressure divided in gas tank is restored by P1 to P2, and the second chamber pressure is restored by P4
To P2；
S3, the electric signal that pressure monitoring device is sent out can be received by signal receiving device judge whether electromagnetic impulse valve is different
Often；
If S4, signal receiving device can not receive the electric signal that pressure monitoring device is sent out, electromagnetic impulse valve exception is judged；
S5, the time T of signal is sent out by signal receiving device reception pressure monitoring device, and is sent out according to pressure monitoring device
The time T of signal judges the working condition of electromagnetic impulse valve；
If the time T that S6, pressure monitoring device send out signal is less than predetermined threshold value, judge that electromagnetic impulse valve is working properly；
The step S5 further includes：Choose pressure monitoring device so that pressure monitoring device sends out the critical-point pressure of electric signal
P3 is that the pressure of the second cavity is down to a certain pressure value in the pressure drop process of P4 by P2；
Predetermined threshold value in the step S6 includes：First predetermined threshold value T0, under the conditions of P3 ＜ P1 ＜ P2；Second predetermined threshold value
T1+T0, under the conditions of P1≤P3 ＜ P2, wherein T1 be electromagnetic pulse valve exhaust after point air box pressure be restored to more than P3 when
Between；
The step S6 includes：As P3 ＜ P1 ＜ P2, if the time T that pressure monitoring device sends out signal is less than the first default threshold
Value T0 then judges that electromagnetic impulse valve is working properly；As P1≤P3 ＜ P2, if the time T that pressure monitoring device sends out signal is small
In the second predetermined threshold value T1+T0, then judge that electromagnetic impulse valve is working properly.
2. electromagnetic impulse valve detection method according to claim 1, which is characterized in that the electromagnetic impulse valve is abnormal at least
In occurring that abnormal, primary diaphragm is abnormal, the first damping hole plug, pilot head component are stuck including electromagnetic coil or be not switched on
One kind.
3. electromagnetic impulse valve detection method according to claim 1, which is characterized in that the step S3 further includes：
Choose pressure monitoring device so that the critical-point pressure P3 that pressure monitoring device sends out electric signal is the pressure of the second cavity
A certain pressure value in the pressure drop process of P4 is down to by P2.
4. electromagnetic impulse valve detection method according to claim 3, which is characterized in that the pressure monitoring device sends out electricity
The critical-point pressure P3 of signal meets P3 ＜ P1 ＜ P2 with the size of P1, P2, if signal receiving device can not receive pressure prison
The electric signal that device is sent out is surveyed, then judges electromagnetic impulse valve exception.
5. electromagnetic impulse valve detection method according to claim 3, which is characterized in that the pressure monitoring device sends out electricity
The critical-point pressure P3 of signal meets P1≤P3 ＜ P2 with the size of P1, P2, if signal receiving device can not receive pressure prison
The electric signal that device is sent out is surveyed, then judges electromagnetic impulse valve exception.
6. electromagnetic impulse valve detection method according to claim 1, which is characterized in that electromagnetic impulse valve in the step S1
The time of return pulse signal is Δ T, and Δ T is determined by electromagnetic impulse valve.
7. electromagnetic impulse valve detection method according to claim 1, which is characterized in that pulse signal node in the step S2
Valve is closed after beam, electromagnetic impulse valve evacuation time is less than T2, and T2 is the time threshold set according to different electromagnetic impulse valves.
8. a kind of electromagnetic impulse valve detecting system, which is characterized in that the system comprises：
Electromagnetic impulse valve, including electromagnetic coil, pilot head component, guide's valve seat, valve deck and valve seat, are equipped between valve deck and valve seat
Primary diaphragm and the first spring are equipped with secondary diaphragm and second spring between valve deck and guide's valve seat, electromagnetic impulse valve includes position
The first cavity below primary diaphragm, the second cavity above primary diaphragm and the third chamber above secondary diaphragm
Body, primary diaphragm are equipped with the first damping hole of connection the first cavity and the second cavity, and secondary diaphragm is equipped with the second chamber of connection
Second damping hole of body and third cavity；Pilot head component is fixedly installed in by screw on guide's valve seat；
Divide gas tank, it is described that gas tank is divided to be fixedly mounted with valve seat, and be connected with the first cavity；
Pressure monitoring device is fixedly installed on valve deck, for detecting the gas pressure in the second cavity；
Signal receiving device is electrically connected, the pressure data detected for receiving pressure monitoring device with pressure monitoring device.
9. electromagnetic impulse valve detecting system according to claim 8, which is characterized in that the signal receiving device and pressure
Monitoring device is electrically connected by wired or wireless mode.
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| CN106404367B (en) * | 2016-08-31 | 2018-11-13 | 苏州协昌环保科技股份有限公司 | Electromagnetic impulse valve detection method and detecting system |
| CN106404366B (en) * | 2016-08-31 | 2018-11-13 | 苏州协昌环保科技股份有限公司 | Electromagnetic impulse valve detection method and detecting system |
| CN112642230B (en) * | 2018-01-23 | 2022-05-20 | 苏州协昌环保科技股份有限公司 | Correlation determination method for air bag pressure change and pulse valve working state of intelligent self-checking ash removal device |
| CN210069108U (en) * | 2019-03-29 | 2020-02-14 | 苏州协昌环保科技股份有限公司 | Wireless self-sensing intelligent electromagnetic pulse valve |
| CN113230773B (en) * | 2021-06-22 | 2023-12-26 | 上海袋式除尘配件有限公司 | Intelligent detection system and detection method for electromagnetic pulse valve faults |
| CN115430230A (en) * | 2022-11-03 | 2022-12-06 | 湖南洁滤环保科技有限公司 | Inlet and outlet control method for bag-type dust collector |
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