CN106404367A - Electromagnetic pulse valve detection method and system - Google Patents
Electromagnetic pulse valve detection method and system Download PDFInfo
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- CN106404367A CN106404367A CN201610794679.5A CN201610794679A CN106404367A CN 106404367 A CN106404367 A CN 106404367A CN 201610794679 A CN201610794679 A CN 201610794679A CN 106404367 A CN106404367 A CN 106404367A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses an electromagnetic pulse valve detection method and system. The method comprises the following steps: in step S1, an electromagnetic pulse valve receives pulse signals, the valve is opened, pressure gas inside an air manifold can be discharged, pressure of the air manifold falls to P1 from P2, and pressure of a valve chamber falls to P4 from P2; in steps S2, after the pulse signals are received, the valve is closed, the pressure of the air manifold returns to P2 from P1, and the pressure of the valve chamber returns to P2 from P4; in step S3, time T at which signals are sent by a pressure monitoring device is received via a signal receiving device of the pressure monitoring device, and a working state of the electromagnetic pulse valve is determined according to the time T at which the signals are sent by the pressure monitoring device; in step S4, if the time T at which the signals are sent by the pressure monitoring device is greater than or equal to a preset threshold value, that the electromagnetic pulse valve malfunctions is determined. According to the electromagnetic pulse valve detection method and system, the signal receiving device of the pressure monitoring device is used for receiving electric signals from the pressure monitoring device, whether the electromagnetic pulse valve malfunctions can be determined according to the time at which the electric signals are sent from the pressure monitoring device, and convenience of detection can be realized.
Description
Technical field
The invention belongs to electromagnetic impulse valve technical field is and in particular to a kind of electromagnetic impulse valve detection method and detection are
System.
Background technology
Electromagnetic impulse valve is the core component in sack cleaner soot cleaning system, mainly by solenoid, pilot head component,
The parts such as guide's valve seat, valve gap and valve seat form, the wherein diaphragm unit of working chamber or piston component, spring or other exercise group
Part etc. is to determine valve performance and the most important element in life-span because they be in high pressure for a long time, in high-frequency reciprocating motion,
Work can lead to the rupture of diaphragm of diaphragm unit for a long time, and the rubber supporting spring of diaphragm unit is struck bad and aging, spring breakage
Etc. fatal defect, severely impact the quality of electromagnetic impulse valve.
If prior art electromagnetic impulse valve breaks down, the electromagnetic impulse valve breaking down need to be found first, then will go out
The electromagnetic impulse valve of existing fault is dismantled, and then each part of electromagnetic impulse valve is detected successively, electromagnetic impulse valve
Part is more, and detection is relatively complicated, and disassembly and assembly inconvenience, greatly reduces detection efficiency.
Content of the invention
It is an object of the invention to provide a kind of electromagnetic impulse valve detection method and detecting system, with easily to electromagnetism arteries and veins
Rush valve to be detected.
To achieve these goals, technical scheme provided in an embodiment of the present invention is as follows：
A kind of electromagnetic impulse valve detection method, methods described includes：
S1, electromagnetic impulse valve return pulse signal, valve is opened, and discharges the pressed gas in point gas tank, the pressure of point gas tank by
P2 is down to P1, and valve pocket pressure is down to P4 by P2；
Close pressure in valve, point gas tank after S2, pulse signal ends to be recovered to P2 by P1, valve pocket pressure by P4 recover to
P2；
S3, receive pressure monitoring device by pressure monitoring device signal receiving device and send the time T of signal, and according to pressure
The time T that monitoring device sends signal judges the working condition of electromagnetic impulse valve；
If the time T that S4 pressure monitoring device sends signal is more than or equal to predetermined threshold value, judge that electromagnetic impulse valve is abnormal.
As a further improvement on the present invention, described electromagnetic impulse valve at least includes the second damping hole on secondary diaphragm extremely
There is one of exception, the non-normal reset of pilot head component in leakage, second spring.
As a further improvement on the present invention, described step S3 also includes：
Choose pressure monitoring device so that critical-point pressure P3 that pressure monitoring device sends electric signal divides gas for electromagnetic impulse valve
A certain pressure value in the pressure drop process by the near P4 of P2 for the pressure of case；
Relatively pressure monitoring device sends critical-point pressure P3 of electric signal and the size of P1, P2, and according to pressure monitoring device
The time T sending signal judges the working condition of electromagnetic impulse valve.
As a further improvement on the present invention, the predetermined threshold value in described step S4 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 is point air box pressure after electromagnetic pulse valve exhaust
Return to the time more than P3.
As a further improvement on the present invention, described step S4 includes：
As P3 ＜ P1 ＜ P2, if the time T that pressure monitoring device sends signal is more than or equal to the first predetermined threshold value T0, sentence
Determine at least to include the second damping hole leakage on secondary diaphragm, second spring generation exception, pilot head component in electromagnetic impulse valve not
One of normal reset, source of the gas deficiency, otherwise, it is determined that electromagnetic impulse valve is abnormal；
As P1≤P3 ＜ P2, if the time T that pressure monitoring device sends signal is more than or equal to the second predetermined threshold value T1+T0,
Then judge that at least including the second damping hole leakage, second spring on secondary diaphragm in electromagnetic impulse valve occurs abnormal, pilot head group
One of non-normal reset of part, otherwise, it is determined that electromagnetic impulse valve is abnormal.
As a further improvement on the present invention, in described step S1, the time of electromagnetic impulse valve return pulse signal is Δ T,
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 described step S2
Evacuation time is less than T2, and T2 is the time threshold being set according to different electromagnetic impulse valves.
The technical scheme that another embodiment of the present invention provides is as follows：
A kind of electromagnetic impulse valve detecting system, described system includes：
Electromagnetic impulse valve, including solenoid, pilot head component, guide's valve seat, valve gap and valve seat, is provided between valve gap and valve seat
Primary diaphragm and the first spring, are provided with secondary diaphragm and second spring between valve gap and guide's valve seat, electromagnetic impulse valve includes position
In the first cavity below primary diaphragm, it is located at the second cavity above primary diaphragm and is located at the 3rd chamber above secondary diaphragm
Body, primary diaphragm is communicated with the first damping hole of the first cavity and the second cavity, secondary diaphragm is communicated with the second chamber
Body and the second damping hole of the 3rd cavity；
Divide gas tank, described point of gas tank is fixedly mounted with valve seat, and is connected with the first cavity；
Pressure monitoring device, is fixedly installed on valve gap, for detecting the gas pressure in the second cavity；
Signal receiving device, is electrically connected with pressure monitoring device, for receiving the pressure data that pressure monitoring device detects.
As a further improvement on the present invention, described signal receiving device and pressure monitoring device are by wired or wireless
Mode is electrically connected with.
Compared with prior art, the invention has the advantages that：
By installing pressure monitoring device on the valve gap of electromagnetic impulse valve, and connect using pressure monitoring device signal receiving device
Receive the electric signal of pressure monitoring device, whether electromagnetic impulse valve can be judged according to the time that pressure monitoring device sends electric signal
Abnormal, easy to detect；
Pressure monitoring device is directly mounted on valve gap, easy for installation, and manufacturing cost is relatively low, and does not interfere with electromagnetic pulse
The original structure of valve and performance.
Brief description
Fig. 1 is the structural representation of electromagnetic impulse valve detecting system in the embodiment of the invention；
Fig. 2 is that in the embodiment of the invention, electromagnetic impulse valve and pressure monitoring device and pressure monitoring device signal receive
The mounting structure schematic diagram of device；
Fig. 3 is the partial structural diagram of electromagnetic impulse valve in the embodiment of the invention；
Fig. 4 is the schematic flow sheet of electromagnetic impulse valve detection method in the embodiment of the invention；
Fig. 5 is the schematic flow sheet of electromagnetic impulse valve detection method in another specific embodiment of the present invention；
Fig. 6 is the schematic flow sheet of electromagnetic impulse valve detection method in yet another embodiment of the present invention.
Specific embodiment
Describe the present invention below with reference to specific embodiment shown in the drawings.But these embodiments are simultaneously
Do not limit the present invention, structure that those of ordinary skill in the art is made, method or functionally according to these embodiments
Conversion is all contained in protection scope of the present invention.
In each diagram of the present invention, for the ease of diagram, structure or partial some sizes can be with respect to other knots
Structure or partial enlargement, therefore, are only used for illustrating the basic structure of subject of the present invention.
Used herein for example " on ", " top ", D score, the term of the representation space relative position such as " lower section " be in order at just
The relation that a unit as shown in the drawings or feature are with respect to another unit or feature to be described in descriptive purpose.Empty
Between relative position term can be intended to including equipment using or work in different azimuth in addition to orientation shown in figure.
For example, if by the upset of the equipment of in figure, be described as being located at other units or feature " lower section " or " under " unit will
Positioned at other units or feature " top ".Therefore, exemplary term " lower section " can include above and below both orientation.If
Standby can otherwise be directed（Ratate 90 degrees or other directions）, and correspondingly explain used herein and space correlation
Description language.
Although it should be understood that term first, second grade herein can be used for describing various elements or structure,
But these are described object and should not be limited by these terms.These terms are only used for these description objects are distinguished from each other
Open.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.
Shown in ginseng Fig. 1, in an embodiment of the present invention, electromagnetic impulse valve detecting system includes F1 ~ F6 and is arranged in order for totally 6
Electromagnetic impulse valve 100, each electromagnetic impulse valve 100 be all connected with a point gas tank 101, electromagnetic impulse valve 100 is equipped with pressure
Power monitoring device 102, pressure monitoring device 102 is electrically connected with signal receiving device 103 respectively, and pressure monitoring device 102 is examined
Survey the gas pressure in electromagnetic impulse valve, signal receiving device 103 is used 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 with pressure switch, signal receiving device
Illustrate as a example receiving apparatus, pressure monitoring device and signal receiving device can also be other monitorings in other embodiments
Pressure data and the device receiving pressure data, no longer citing illustrates in detail herein.
In addition, pressure monitoring device 102 and signal receiving device 103 are electrically connected by electric wire in present embodiment,
It is attached by way of wire transmission, can also be carried out in other embodiments even by way of being wirelessly transferred
Connect, be no longer described in detail herein.
In present embodiment, electromagnetic impulse valve source of the gas operating pressure is 0.2Mpa ~ 0.6Mpa, 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 circumstances for 0.05S ~
0.15S）, valve is opened, and discharges the pressed gas in point gas tank, and electric signal closes valve, whole electromagnetic impulse valve row after terminating
The gas time is less than T2（T2 is the time threshold being set according to different electromagnetic impulse valves, generally can be set to 1S）, divide the pressure in gas tank
Power moment is by initial pressure P2（Point air box pressure after electromagnetic pulse valve exhaust）It is down to P1（Point gas tank pressure before electromagnetic pulse valve exhaust
Power）, accordingly valve pocket pressure P4 is down to by P2, and return to P2 in the short time, accordingly valve pocket pressure is recovered to P2 by P4.
After electromagnetic impulse valve (F1) terminates exhaust, electromagnetic impulse valve (F2) receives pulse signal and starts working successively, with this in the same manner
Analogize, until all of electromagnetic impulse valve terminates to be vented.
It should be appreciated that illustrating in present embodiment, in other embodiment taking 6 electromagnetic impulse valves as a example
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.
Below in conjunction with shown in Fig. 2, Fig. 3, the electromagnetic impulse valve detecting system in present embodiment is described further.
Electromagnetic impulse valve detecting system includes electromagnetic impulse valve 100, point 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 gap 3, the first spring 4, guide's valve seat 5, second
The parts such as diaphragm 6, second spring 7, solenoid 8, pilot head component 9.
Specifically, valve gap 3 passes through bolt 14 with valve seat 1 and flat shim 15 fixedly mounts, also solid between valve gap 3 and valve seat 1
Equipped with primary diaphragm 2, primary diaphragm 2 is provided with the first damping hole 16 for Dingan County, and valve gap 3 and valve seat 1 are enclosed the chamber setting by primary diaphragm 2
Body is divided into the first cavity a and the second cavity b, and 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 gap 3 also
It is provided with the first spring 4, valve gap 3 is additionally provided with pressure relief vent 18, after the completion of being vented in the second cavity b, the first spring 4 is in compression
State, now, the first spring 4 provides downward elastic force so that primary diaphragm 2 gradually resets.
Valve gap 3 top fixation has guide's valve seat 5 by chapter, and in present embodiment, valve gap 3 passes through screw 13 with guide's valve seat 5
Fixed installation.It is installed with secondary diaphragm 6, shape between secondary diaphragm 6 and guide's valve seat 5 between valve seat 3 and guide's valve seat 5
Cheng You tri- cavity c, secondary diaphragm 6 is provided with the second damping hole 17 for turning on the second cavity b and the 3rd cavity c, and second
It is additionally provided with second spring 7 between diaphragm 6 and guide's valve seat 5.After gas exclusion in the 3rd cavity c, second spring 7 is in compression
State, now, second spring 7 provides downward elastic force so that secondary diaphragm 6 gradually resets.
Pilot head component 9 is fixedly installed on guide's valve seat 5 by screw 12, and pilot head component 9 is additionally provided with and the 3rd chamber
The unloading hole that body c is connected（Non- label）, pilot head component 9 is externally provided with solenoid 8, and snap ring is passed through on the top of solenoid 8
10 with pilot head component 9 buckle, the bottom of solenoid 8 is assembled with pilot head component 9 by wave spring washer 11.Separately
Outward, solenoid 8 is also associated with electrical signal line, to control the work of solenoid.
Valve seat 1 in the present invention is arranged on point gas tank 101, and when pouring pressed gas in point gas tank 101, gas is rapid
Enter in the first cavity a, meanwhile, the first damping hole 16 that gas passes through on primary diaphragm 2 enters in the second cavity b, then gas
The second damping hole 17 that body passes through on secondary diaphragm 6 enters in the 3rd cavity c, until the first cavity a, the second cavity b, the 3rd chamber
Body c reaches poised state, and now the first cavity a, the gas pressure intensity in the second cavity b, the 3rd cavity c are equal.
After electromagnetic impulse valve is energized, solenoid 8 receives electric signal by electrical signal line and produces magnetic field, in electromagnetism
Pilot head component 9 action in the presence of power, makes the gas in the 3rd cavity c discharge by unloading hole, and then secondary diaphragm 6 separates
The second cavity b and the 3rd cavity c break balance, according to pressure F=pressure P × area S, the pressure of secondary diaphragm 6 lower section is more than
The pressure of secondary diaphragm 6 top, second spring 7 is in compressive state, and gas is discharged by pressure relief vent 18 from the second cavity b.
In addition, the gas pressure intensity in the second cavity b reduces, according to pressure F=pressure P × area S, primary diaphragm 2 top
Pressure is less than the pressure of primary diaphragm 2 lower section, and the first spring 4 is in compressive state, primary diaphragm in the presence of pressure, upwards
Motion（Now valve is in open mode）, the first cavity a and point gas tank internal gas connecting with the first cavity pass through 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
Front point of air box pressure）It is down to P1（Point air box pressure after electromagnetic pulse valve exhaust）.
After electromagnetic impulse valve power-off, by not receiving electric signal, electromagnetic force disappears solenoid 8, pilot head component 8
Reset to block unloading hole, gas injection in the first cavity a, the second cavity b, the 3rd cavity c, and reach 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 provided with valve gap 3
Device 102 is used for the gas pressure in detection the second cavity b.
Meanwhile, pressure monitoring device 102 and signal receiving device 103 are electrically connected with, and signal receiving device 103 receives pressure
The pressure data that monitoring device 102 detects, pressure data includes pressure value and electric signal time.
Need in the present invention to choose suitable pressure monitoring device so that pressure monitoring device sends the critical of electric signal presses
Power P3 divides a certain pressure value in the pressure of the gas tank pressure drop process by the near P4 of P2 for electromagnetic impulse valve, and that is, pressure monitoring device needs
A certain pressure value in P4 ~ P2 is chosen according to different demands.
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 the critical-point pressure of electric signal）When, pressure
Monitoring device 102 is normally open, and now, signal receiving device 103 cannot receive electric signal；
When pressure monitoring device 102 is in pressure value≤P3（Pressure monitoring device sends the critical-point pressure of electric signal）When, pressure
Monitoring device 102 is normally off, and now, the reception of pressure monitoring device signal fills 103 and receives electric signal and remember telecommunications
Number time（T）；
When pressure monitoring device 102 returns to ＞ P3 in pressure value from≤P3, pressure monitoring device returns to from normally off
Normally open, now signal receiving device 103 cannot receive electric signal.
So, by the setting of pressure monitoring device and signal receiving device, can be able to be connect according to signal receiving device
The electric signal receiving pressure monitoring device and the time receiving pressure monitoring device electric signal detect electromagnetic impulse valve work
Whether abnormal make, elaborate below concrete detection method.
Shown in ginseng Fig. 4, in the embodiment of the invention, electromagnetic impulse valve detection method comprises the following steps：
S1, electromagnetic impulse valve return pulse signal, valve is opened, and discharges the pressed gas in point gas tank, the pressure of point gas tank by
P2（Point air box pressure before electromagnetic pulse valve exhaust）It is down to P1（Point air box pressure after electromagnetic pulse valve exhaust）；
Valve is closed, the pressure in point gas tank is by P1 after S2, pulse signal ends（Point air box pressure after electromagnetic pulse valve exhaust）
Recover to P2（Point air box pressure before electromagnetic pulse valve exhaust）；
S3, receive pressure monitoring device by signal receiving device and send the time T of signal, and sent according to pressure monitoring device
The time T of signal judges the working condition of electromagnetic impulse valve；
If the time T that S4 pressure monitoring device sends signal is less than predetermined threshold value, judge that electromagnetic impulse valve is working properly.
Suitable pressure monitoring device is chosen so that pressure monitoring device sends the critical point of electric signal in present embodiment
Pressure P3 divides a certain pressure value in the pressure of the gas tank pressure drop process by the near P4 of P2 for electromagnetic impulse valve, and predetermined threshold value also needs to examine
Consider and send critical-point pressure P3 of electric signal and the magnitude relationship of P2, P1 according to pressure monitoring device, specifically, two kinds can be divided into
Situation：
During P3 ＜ P1 ＜ P2, predetermined threshold value is the first predetermined threshold value T0；
During P1≤P3 ＜ P2, predetermined threshold value is the second predetermined threshold value T1+T0；
Wherein, T1 is that point air box pressure returns to time more than P3 after electromagnetic pulse valve exhaust, and T0 is according to empirically determined
The compensation time.
Preferably, in present embodiment, the time of electromagnetic impulse valve return pulse signal is 0.05S ~ 0.15S, pulse signal
Valve is closed, electromagnetic impulse valve evacuation time is less than 1S after end.T0 rule of thumb illustrates taking 1S as a example, the first default threshold
Value T0 is 1S, and the second predetermined threshold value T1+T0 is T1+1S.
So, step S4 is specifically divided into two kinds of situations：
As P3 ＜ P1 ＜ P2, if the time T that pressure monitoring device sends signal is less than the first predetermined threshold value 1S, judge electromagnetism
Pulse valve is working properly；
As P1≤P3 ＜ P2, if the time T that pressure monitoring device sends signal is less than the second predetermined threshold value T1+1S, judge
Electromagnetic impulse valve is working properly.
In another embodiment of the present invention, if the second damping hole 17 occurring on secondary diaphragm 6 leak, the second bullet
When there is abnormal or the non-normal reset of pilot head component 9, source of the gas deficiency in spring 7, pressure monitoring device send signal when
Between T can exceed predetermined threshold value, therefore, pressure monitoring device is received by detection signal reception device and sends the time T of signal, also
May determine that whether electromagnetic impulse valve above-mentioned exception.
Shown in ginseng Fig. 5, concrete detection method comprises the following steps：
S1, electromagnetic impulse valve return pulse signal, valve is opened, and discharges the pressed gas in point gas tank, the pressure of point gas tank by
P2（Point air box pressure before electromagnetic pulse valve exhaust）It is down to P1（Point air box pressure after electromagnetic pulse valve exhaust）；
Valve is closed, the pressure in point gas tank is by P1 after S2, pulse signal ends（Point air box pressure after electromagnetic pulse valve exhaust）
Recover to P2（Point air box pressure before electromagnetic pulse valve exhaust）；
S3, receive pressure monitoring device by signal receiving device and send the time T of signal, and sent according to pressure monitoring device
The time T of signal judges whether electromagnetic impulse valve is abnormal；
If the time T that S4 pressure monitoring device sends signal is more than or equal to predetermined threshold value, judge that electromagnetic impulse valve is abnormal
（On secondary diaphragm there is exception, in the non-normal reset of pilot head component, source of the gas deficiency etc. in the second damping hole leakage, second spring
One or more）.
Similarly, choose suitable pressure monitoring device so that pressure monitoring device sends the critical-point pressure of electric signal
P3 divides a certain pressure value in the pressure of the gas tank pressure drop process by the near P4 of P2 for electromagnetic impulse valve, and predetermined threshold value considers according to pressure
Power monitoring device sends critical-point pressure P3 of electric signal and the magnitude relationship of P2, P1, can be divided into two kinds of situations：
During P3 ＜ P1 ＜ P2, predetermined threshold value is the first predetermined threshold value T0；
During P1≤P3 ＜ P2, predetermined threshold value is the second predetermined threshold value T1+T0；
Wherein, T1 is that point air box pressure returns to time more than P3 after electromagnetic pulse valve exhaust, and T0 is according to empirically determined
The compensation time.
Preferably, in present embodiment, the time of electromagnetic impulse valve return pulse signal is 0.05S ~ 0.15S, pulse signal
Valve is closed, electromagnetic impulse valve evacuation time is less than 1S after end.T0 rule of thumb illustrates taking 1S as a 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 signal is more than or equal to the first predetermined threshold value 1S, sentence
Determine electromagnetic impulse valve abnormal（On secondary diaphragm, the second damping hole leaks, second spring generation is abnormal, pilot head component is normally multiple
One or more of position etc.）；
As P1≤P3 ＜ P2, if the time T that pressure monitoring device sends signal is more than or equal to the second predetermined threshold value T1+1S,
Then judge that electromagnetic impulse valve is abnormal（On secondary diaphragm just not there is exception, pilot head component in the second damping hole leakage, second spring
One or more of often reset etc.）.
After electromagnetic impulse valve abnormal conditions occur, 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 signal is less than predetermined threshold value, electromagnetic impulse valve normal work.
In the yet another embodiment of the present invention, if solenoid 8 exception, primary diaphragm 2 occurs exception,
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 the critical-point pressure of electric signal）, now, signal receiving device 103 cannot receive telecommunications
Number.Therefore, detect whether pressure monitoring device sends signal by detection signal reception device, electromagnetic impulse valve can also be judged
Whether above-mentioned exception occurs.
Shown in ginseng Fig. 6, concrete detection method comprises the following steps：
S1, electromagnetic impulse valve return pulse signal, valve is opened, and discharges the pressed gas in point gas tank, the pressure of point gas tank by
P2（Point air box pressure before electromagnetic pulse valve exhaust）It is down to P1（Point air box pressure after electromagnetic pulse valve exhaust）；
Valve is closed, the pressure in point gas tank is by P1 after S2, pulse signal ends（Point air box pressure after electromagnetic pulse valve exhaust）
Recover to P2（Point air box pressure before electromagnetic pulse valve exhaust）；
S3, the electric signal that pressure monitoring device sends can be received by signal receiving device judge whether electromagnetic impulse valve is different
Often；
If S4 signal receiving device cannot receive the electric signal that pressure monitoring device sends, judge that electromagnetic impulse valve is abnormal
（Solenoid occurs during abnormal, primary diaphragm occurs that abnormal, the first damping hole plug, pilot head component are stuck or are not switched on etc.
One or more）.
Similarly, choose suitable pressure monitoring device in present embodiment so that pressure monitoring device sends electric signal
Critical-point pressure P3 divide a certain pressure value in the pressure of the gas tank pressure drop process by the near P4 of P2 for electromagnetic impulse valve, pressure is supervised
Survey device and send critical-point pressure P3 of electric signal and the magnitude relationship of P2, P1, two kinds of situations can be divided into：P3 ＜ P1 ＜ P2 and
P1≤P3 ＜ P2；
In above-mentioned two situations, all can the electric signal judgement electricity that pressure monitoring device sends be received by signal receiving device
Whether magnetic field impulse valve is abnormal, and detection and determination methods are identical, are no longer repeated in detail herein.
Preferably, in present embodiment, the time of electromagnetic impulse valve return pulse signal is 0.05S ~ 0.15S, pulse signal
Valve is closed, electromagnetic impulse valve evacuation time is less than 1S after end.
After electromagnetic impulse valve abnormal conditions occur, in time to solenoid, primary diaphragm, the first damping hole, pilot head group
Part is overhauled, until signal receiving device receives the electric signal that pressure monitoring device sends, electromagnetic impulse valve normal work.
It should be appreciated that all illustrating as a example diaphragm valve electromagnetic impulse valve in above-mentioned 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 passes through above-mentioned embodiment, has the advantages that：
By installing pressure monitoring device on the valve gap of electromagnetic impulse valve, and receive pressure monitoring dress using signal receiving device
According to the time that pressure monitoring device sends electric signal, the electric signal put, can judge whether electromagnetic impulse valve is abnormal, detection side
Just；
Pressure monitoring device is directly mounted on valve gap, easy for installation, and manufacturing cost is relatively low, and does not interfere with electromagnetic pulse
The original structure of valve and performance.
It should be understood that although this specification is been described by according to embodiment, but not each embodiment only comprises one
Individual independent technical scheme, only for clarity, those skilled in the art should will say this narrating mode of specification
As an entirety, the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can for bright book
With the other embodiment understanding.
The a series of detailed description of those listed above is only for the feasibility embodiment of the present invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should be included within the scope of the present invention.
Claims (9)
1. a kind of electromagnetic impulse valve detection method is it is characterised in that methods described includes：
S1, electromagnetic impulse valve return pulse signal, valve is opened, and discharges the pressed gas in point gas tank, the pressure of point gas tank by
P2 is down to P1, and valve pocket pressure is down to P4 by P2；
Close pressure in valve, point gas tank after S2, pulse signal ends to be recovered to P2 by P1, valve pocket pressure by P4 recover to
P2；
S3, receive pressure monitoring device by pressure monitoring device signal receiving device and send the time T of signal, and according to pressure
The time T that monitoring device sends signal judges the working condition of electromagnetic impulse valve；
If the time T that S4 pressure monitoring device sends signal is more than or equal to predetermined threshold value, judge that electromagnetic impulse valve is abnormal.
2. electromagnetic impulse valve detection method according to claim 1 is it is characterised in that described electromagnetic impulse valve is abnormal at least
Occur in exception, the non-normal reset of pilot head component, source of the gas deficiency including the second damping hole leakage, second spring on secondary diaphragm
One kind.
3. electromagnetic impulse valve detection method according to claim 1 is it is characterised in that described step S3 also includes：
Choose pressure monitoring device so that critical-point pressure P3 that pressure monitoring device sends electric signal divides gas for electromagnetic impulse valve
A certain pressure value in the pressure drop process by the near P4 of P2 for the pressure of case；
Relatively pressure monitoring device sends critical-point pressure P3 of electric signal and the size of P1, P2, and according to pressure monitoring device
The time T sending signal judges the working condition of electromagnetic impulse valve.
4. electromagnetic impulse valve detection method according to claim 3 is it is characterised in that predetermined threshold value in described step S4
Including：
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 is point air box pressure after electromagnetic pulse valve exhaust
Return to the time more than P3.
5. electromagnetic impulse valve detection method according to claim 4 is it is characterised in that described step S4 includes：
As P3 ＜ P1 ＜ P2, if the time T that pressure monitoring device sends signal is more than or equal to the first predetermined threshold value T0, sentence
Determine at least to include the second damping hole leakage on secondary diaphragm, second spring generation exception, pilot head component in electromagnetic impulse valve not
One of normal reset, otherwise, it is determined that electromagnetic impulse valve is abnormal；
As P1≤P3 ＜ P2, if the time T that pressure monitoring device sends signal is more than or equal to the second predetermined threshold value T1+T0,
Then judge that at least including the second damping hole leakage, second spring on secondary diaphragm in electromagnetic impulse valve occurs abnormal, pilot head group
One of non-normal reset of part, otherwise, it is determined that electromagnetic impulse valve is abnormal.
6. electromagnetic impulse valve detection method according to claim 1 is it is characterised in that electromagnetic impulse valve in described 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 is it is characterised in that pulse signal node in described step S2
Valve is closed, electromagnetic impulse valve evacuation time is less than T2, T2 is the time threshold setting according to different electromagnetic impulse valves after bundle.
8. a kind of electromagnetic impulse valve detecting system is it is characterised in that described system includes：
Electromagnetic impulse valve, including solenoid, pilot head component, guide's valve seat, valve gap and valve seat, is provided between valve gap and valve seat
Primary diaphragm and the first spring, are provided with secondary diaphragm and second spring between valve gap and guide's valve seat, electromagnetic impulse valve includes position
In the first cavity below primary diaphragm, it is located at the second cavity above primary diaphragm and is located at the 3rd chamber above secondary diaphragm
Body, primary diaphragm is communicated with the first damping hole of the first cavity and the second cavity, secondary diaphragm is communicated with the second chamber
Body and the second damping hole of the 3rd cavity；
Divide gas tank, described point of gas tank is fixedly mounted with valve seat, and is connected with the first cavity；
Pressure monitoring device, is fixedly installed on valve gap, for detecting the gas pressure in the second cavity；
Signal receiving device, is electrically connected with pressure monitoring device, for receiving the pressure data that pressure monitoring device detects.
9. electromagnetic impulse valve detecting system according to claim 8 is it is characterised in that described signal receiving device and pressure
Monitoring device is electrically connected with by way of wired or wireless.
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