CN208153826U - Pneumatic control valve control device - Google Patents
Pneumatic control valve control device Download PDFInfo
- Publication number
- CN208153826U CN208153826U CN201820657813.1U CN201820657813U CN208153826U CN 208153826 U CN208153826 U CN 208153826U CN 201820657813 U CN201820657813 U CN 201820657813U CN 208153826 U CN208153826 U CN 208153826U
- Authority
- CN
- China
- Prior art keywords
- solenoid valve
- gas circuit
- valve
- pneumatic control
- control valve
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to technical field of valve control, more particularly to a kind of pneumatic control valve control device, including the first solenoid valve, second solenoid valve and air filter, the gas outlet of the air filter is connect with the gas circuit one of the gas circuit one of the first solenoid valve and second solenoid valve respectively, the gas circuit two of the second solenoid valve and the gas circuit three of the first solenoid valve connect, the gas circuit three of the second solenoid valve is connected with atmosphere, and the gas circuit two of first solenoid valve is connect with pneumatic control valve；The pneumatic control valve control device structure is simple, easy to use, novel in design, keeps pneumatic control valve movement accurate, reliable, safe.
Description
Technical field
The utility model relates to technical field of valve control, and in particular to a kind of pneumatic control valve control device.
Background technique
Second set of urea plant system of applicant enters urea synthesizer CO2 pneumatic control valve 4, and position number is HV9201,
Required in production and application during normal production the pneumatic control valve 4 be in fully open position, when system shutdown or system overpressure interlock
When emergency stop, which requires to be in close state immediately, guarantees that the material in synthetic tower does not generate reflux, avoids closing
At urine blocking pipeline in tower, production accident is caused.That is the pneumatic control valve 4 has only required standard-sized sheet and fully closed two positions
Set, do not require intermediate adjusting position, the pneumatic control valve 4 as a two-position valve carry out using.This is pneumatically adjusted
The former design of the control of valve 4 uses the solenoid valve of an one superpressure interlock protection of series connection of electropneumatic transducer 6 to realize, real
Border control process is as follows：When HV9201 pneumatic control valve 4 needs to open, DCS output 20mA current signal makes electropneumatic transducer 6
Gas source signal is exported, inner air path one to the cylinder that gas circuit two enters pneumatic control valve 4 by interlocking solenoid valve 5 makes pneumatically to adjust
Valve 4 is saved to open.When pneumatic control valve 4 being needed to close, DCS output 4mA current signal makes electropneumatic transducer 6 stop output gas source letter
Number, the compressed air in executing agency's film head is vented by three position of gas circuit of solenoid valve, closes pneumatic control valve 4；
Once system overpressure, interlock protection solenoid valve power loss then interlock 5 gas circuit one of solenoid valve to the disconnection of gas circuit two, two to three gas of gas circuit
Road is connected, directly the gas source signal of cutting electropneumatic transducer 6 output, and by the compression in 4 executing agency's film head of pneumatic control valve
Air emptying allows pneumatic control valve 4 to close.（Note：The working method of interlocking solenoid valve 5 is, when solenoid valve is not charged, electromagnetism
The gas circuit two of valve to gas circuit three is connected, and gas circuit one to gas circuit two disconnects；When solenoid valve electrification, the gas circuit two of solenoid valve to gas circuit
Three disconnect, and gas circuit one to gas circuit two is connected）, it is as shown in Figure 1 to adjust control principle.
But pass through the operation of proximal segment time, it is found that the design exposes following problem in use：
1, because 4 executing agency's film head volume of pneumatic control valve is larger, in production when pneumatic control valve 4 needs to close
When, since it is desired that being vented outwards by electropneumatic transducer 6, closing velocity is slower, is usually present and closes phenomenon not in place, technique
Personnel usually need scene to close by the handwheel of pneumatic control valve 4, extremely inconvenient to the operation of technique.
2, using connecting, there is also have one for this configuration with solenoid valve for the accessory device electropneumatic transducer 6 of pneumatic control valve 4
Fixed security risk breaks down once interlocking solenoid valve 5 or electropneumatic transducer 6 any one of work as link, will be direct
Cause pneumatic control valve 4 out of control, cause production accident, brings economic loss to company.
By the discovery of problem above, decision is transformed this interlock circuit, guarantees the stability contorting of technique, it is ensured that raw
The operation of production.
Summary of the invention
In order to overcome defect existing in the prior art, the utility model provides a kind of pneumatic control valve control device, knot
Structure is simple, easy to use, novel in design, keeps pneumatic control valve movement accurate, reliable, safe.
In order to achieve the above object, the technical solution adopted in the utility model is：
The utility model provides a kind of pneumatic control valve control device, including the first solenoid valve, second solenoid valve and air
Filter, the gas outlet of the air filter connect with the gas circuit one of the gas circuit one of the first solenoid valve and second solenoid valve respectively
It connects, the gas circuit three of the gas circuit two of the second solenoid valve and the first solenoid valve connects, the gas circuit three of the second solenoid valve and big
Gas phase connection, the gas circuit two of first solenoid valve are connect with pneumatic control valve；When pneumatic control valve needs to open, the first electricity
Magnet valve and second solenoid valve simultaneously must be electric, and gas circuit one to the gas circuit two of the first solenoid valve and second solenoid valve is both turned on, the first electricity
The gas circuit two of magnet valve and second solenoid valve to gas circuit three disconnects；When pneumatic control valve needs to close, the first solenoid valve and
The gas circuit one of two solenoid valve power loss, the first solenoid valve and second solenoid valve to gas circuit two disconnects, the first solenoid valve and the second electricity
The gas circuit two of magnet valve to gas circuit three is both turned on.
Further, when pneumatic control valve needs to open, compressed air each leads into the first electricity by air filter
The gas circuit one of magnet valve and the gas circuit one of second solenoid valve, the compressed air of the first solenoid valve is from the gas circuit one of the first solenoid valve to
The gas circuit two of one solenoid valve enters the cylinder of pneumatic control valve, opens pneumatic control valve, the gas circuit one of second solenoid valve to the
The gas circuits two of two solenoid valves is connected, since the gas circuit of two to the first solenoid valve of gas circuit of the first solenoid valve is third is that disconnect, second
The compressed air of solenoid valve not can enter the cylinder of pneumatic control valve.
Further, when pneumatic control valve needs to close, the compressed air in pneumatic control valve cylinder passes through the first electricity
The gas circuit three of two to the first solenoid valve of gas circuit of magnet valve enter the gas circuit two of second solenoid valve to second solenoid valve gas circuit three into
Row emptying, closes pneumatic control valve.
It further, further include solenoid valve controller, the solenoid valve controller is electric with the first solenoid valve and second respectively
Magnet valve control connection.
Compared with prior art, the positive beneficial effect of the utility model is：
1, a kind of pneumatic control valve control device of the utility model had both been able to satisfy technique to HV9201 pneumatic control valve
Control uses, also relatively rationally, the two-bit triplet electromagnetism that has safely eliminated hidden danger present in current use, and selected
Valve, valve body itself have manual knob control, directly control the switching of electromagnetic valve gas circuit at the scene with can be convenient, once two
Solenoid valve breaks down simultaneously, operator can directly electric rotating magnet valve manual knob can control beating for pneumatic control valve
It opens, no longer removes the handwheel for pulling HV9201 pneumatic control valve, it is time saving and labor saving.
2, the utility model only need to be by 4~20mA of the electropneumatic transducer of HV9201 control loop output in DCS system
A0（Simulation output）Signal, the D0 that configuration controls the first solenoid valve at two-way simultaneously or second solenoid valve acts（Numeral output）
Original superpressure interlocked control is instructed and is connected with the switching control instruction of pneumatic control valve, can realized, only by signal
Remove electropneumatic transducer on the basis of original control loop, increases a solenoid valve, utilize the control of original electropneumatic transducer
In cable connection to newly-increased solenoid valve, it can realize without putting into a large amount of expense to the excellent of original control mode
Change, such modification scheme can also apply in the important regulating loop of other production systems, to guarantee important instrumentation
Reliable, stable operation.
Detailed description of the invention
Fig. 1 is the adjusting control principle drawing of pneumatic control valve control device in the prior art；
Fig. 2 is the adjusting control principle drawing of the pneumatic control valve control device of the utility model.
Meaning representated by serial number is in figure：1. the first solenoid valve, 2. second solenoid valves, 3. air filters, 4. is pneumatic
Regulating valve, 5. interlocking solenoid valves, 6. electropneumatic transducers.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Because HV9201 pneumatic control valve 4 only needs standard-sized sheet and full pass on-off adjustment, this is directly controlled using solenoid valve
The switch of pneumatic control valve 4 can be realized preferably because the gas source negotiability of solenoid valve is preferably with respect to electropneumatic transducer 6
HV9201 pneumatic control valve 4 open fastly and quick closing valve.For this purpose, by electropneumatic transducer 6 this instrumentation in original control loop
Remove, meanwhile, in order to make up unreliable, insecurity existing for a solenoid valve control, using two identical solenoid valves into
Row double-throw gas supply, when ensuring that one of solenoid valve breaks down, another solenoid valve can guarantee to HV9201 gas
The normal realization that dynamic regulating valve 4 controls.
As shown in Fig. 2, a kind of 4 control device of pneumatic control valve of the utility model, including first the 1, second electricity of solenoid valve
Magnet valve 2 and air filter 3, the gas outlet of the air filter 3 respectively with the gas circuit one and the second electromagnetism of the first solenoid valve 1
The gas circuit one of valve 2 connects, and the gas circuit three of the gas circuit two of the second solenoid valve 2 and the first solenoid valve 1 connects, second electromagnetism
The gas circuit three of valve 2 is connected with atmosphere, and the gas circuit two of first solenoid valve 1 is connect with pneumatic control valve 4.
First solenoid valve 1 and second solenoid valve 2 in the state of not charged, gas circuit one to gas circuit two disconnect, gas circuit two to
Gas circuit three is connected, and when obtaining electric, gas circuit one to gas circuit two is connected, and gas circuit two to gas circuit three disconnects.
When pneumatic control valve 4 needs to open, the first solenoid valve 1 and second solenoid valve 2 obtain electric, compressed air process simultaneously
Air filter 3 each leads into the gas circuit one of the first solenoid valve 1 and the gas circuit one of second solenoid valve 2, at this moment first solenoid valve 1
Compressed air enters the cylinder of pneumatic control valve 4 from the gas circuit two of one to the first solenoid valve 1 of gas circuit of the first solenoid valve 1, makes gas
Dynamic regulating valve 4 is opened, although the gas circuit two of the gas circuit one of second solenoid valve 2 to second solenoid valve 2 is also switched on, due to first
The gas circuit of two to the first solenoid valve 1 of gas circuit of solenoid valve 1 is third is that disconnect, so the compressed air of second solenoid valve 2 cannot be into
Enter the cylinder of pneumatic control valve 4.
When pneumatic control valve 4 needs to close, 2 power loss of the first solenoid valve 1 and second solenoid valve, 4 cylinder of pneumatic control valve
Interior compressed air enters the gas circuit of second solenoid valve 2 by the gas circuit three of two to the first solenoid valve 1 of gas circuit of the first solenoid valve 1
Two are vented to the gas circuit three of second solenoid valve 2, close pneumatic control valve 4.
When pneumatic control valve 4 needs to open or stay open, the first solenoid valve 1 and second solenoid valve 2 obtain electric, vacation simultaneously
As the first solenoid valve 1 power loss occurs or occur electric tripping failure when, the gas circuit one of the first solenoid valve 1 to gas circuit two disconnects,
Gas circuit two to gas circuit third is that conducting, at this moment second solenoid valve 2 it is electric, the gas circuit one of second solenoid valve 2 to gas circuit two is connected, lead to
The gas circuit three for crossing the first solenoid valve 1 enters the cylinder of pneumatic control valve 4 to gas circuit two, and pneumatic control valve 4 is made to open or keep
Opening state；If second solenoid valve 2 power loss occurs or occur electric tripping failure when, the gas circuit one of second solenoid valve 2 to
Gas circuit two disconnects, gas circuit two to gas circuit is third is that conducting, at this moment the first solenoid valve 1 electric, the gas circuit one of the first solenoid valve 1 to gas
Road two is connected, and opens pneumatic control valve 4, and when needing to close, gas circuit two to the gas circuit three of the first solenoid valve 1 is connected, and passes through
The gas circuit two of second solenoid valve 2 to gas circuit three is vented, and realizes the quick closedown of pneumatic control valve 4.
Further include solenoid valve controller in addition to above structure, the solenoid valve controller respectively with the first solenoid valve 1 and
The control connection of two solenoid valves 2, solenoid valve controller controls the first solenoid valve 1 and second solenoid valve 2 obtains electric or power loss.
According to the working principle of solenoid valve, when solenoid valve is not charged, the spring in solenoid valve answers the spool of solenoid valve
Position, belongs to mechanical return, therefore when solenoid valve is not charged, gas circuit one and gas circuit two does not turn off, gas circuit two to gas circuit three is not turned on
The case where seldom occur.So when pneumatic control valve 4 needs to close or remain turned-off, the first solenoid valve 1 and second solenoid valve 2
The phenomenon that failure causes pneumatic control valve 4 not closed can exclude substantially.
In addition to this, guaranteeing to can satisfy outside the demand that technique production switchs HV9201 pneumatic control valve 4, by superpressure
Interlock protection program has also carried out the modification of programming configuration inside DCS, by superpressure interlock protection action command and HV9201 gas
Dynamic 4 switch order of regulating valve is together in series, and in the case that only system does not have superpressure, the control action of the pneumatic control valve 4 is
It can export, once superpressure occurs in system, then the superpressure interlock protection instruction action of DCS configuration executes, and will make 1 He of the first solenoid valve
Second solenoid valve 2 powers off simultaneously, closes HV9201 pneumatic control valve 4.And the movement of these instructions all uses in DCS
The soft instruction in portion is realized, is reduced the use of the hardware such as peripheral relay, is effectively reduced equipment fault and pneumatically adjust to HV9201
Saving valve control bring influences.
According to this prioritization scheme, using the second short chance stopped of fitting ammonification urea system, to HV9201 pneumatic control valve 4
The implementation that is optimized of control loop, tested by adjustment repeatedly, confirmation is safe and reliable, and just when urea system is driven
It often comes into operation, is proved by the use in most years, improved HV9201 pneumatic control valve 4 acts accurately, reliably, satisfactorily reaches
The target of transformation, provides convenience for technological operation.
The above-mentioned description to embodiment is for that can understand and apply this practical convenient for those skilled in the art
It is novel.Person skilled in the art obviously easily can make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiments without having to go through creative labor.Therefore, those skilled in the art are according to this
The announcement of utility model, does not depart from improvement that the utility model scope is made and modification all should be in the protection of the utility model
Within the scope of.
Claims (4)
1. a kind of pneumatic control valve control device, which is characterized in that including the first solenoid valve, second solenoid valve and air filtration
Device, the gas outlet of the air filter are connect with the gas circuit one of the gas circuit one of the first solenoid valve and second solenoid valve respectively, institute
The gas circuit three of the gas circuit two and the first solenoid valve of stating second solenoid valve connects, and the gas circuit three of the second solenoid valve is connected with atmosphere
Logical, the gas circuit two of first solenoid valve is connect with pneumatic control valve；When pneumatic control valve needs to open, the first solenoid valve and
Second solenoid valve simultaneously it is electric, gas circuit one to the gas circuit two of the first solenoid valve and second solenoid valve is both turned on, the first solenoid valve and
The gas circuit two of second solenoid valve to gas circuit three disconnects；When pneumatic control valve needs to close, the first solenoid valve and the second electromagnetism
The gas circuit one of valve power loss, the first solenoid valve and second solenoid valve to gas circuit two disconnects, the first solenoid valve and second solenoid valve
Gas circuit two to gas circuit three is both turned on.
2. pneumatic control valve control device according to claim 1, which is characterized in that when pneumatic control valve needs to open
When, compressed air each leads into the gas circuit one of the first solenoid valve and the gas circuit one of second solenoid valve by air filter, and first
The compressed air of solenoid valve enters the cylinder of pneumatic control valve from the gas circuit two of one to the first solenoid valve of gas circuit of the first solenoid valve,
Open pneumatic control valve, the gas circuit two of gas circuit one to the second solenoid valve of second solenoid valve is connected, due to the first solenoid valve
Third is that disconnecting, the compressed air of second solenoid valve not can enter the gas of pneumatic control valve for the gas circuit of two to the first solenoid valve of gas circuit
Cylinder.
3. pneumatic control valve control device according to claim 1, which is characterized in that when pneumatic control valve needs to close
When, compressed air in pneumatic control valve cylinder enters the by the gas circuit three of two to the first solenoid valve of gas circuit of the first solenoid valve
The gas circuit three of the gas circuit two of two solenoid valves to second solenoid valve is vented, and pneumatic control valve is closed.
4. pneumatic control valve control device according to claim 1, which is characterized in that it further include solenoid valve controller, institute
Solenoid valve controller is stated to connect with the first solenoid valve and second solenoid valve control respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820657813.1U CN208153826U (en) | 2018-05-04 | 2018-05-04 | Pneumatic control valve control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820657813.1U CN208153826U (en) | 2018-05-04 | 2018-05-04 | Pneumatic control valve control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208153826U true CN208153826U (en) | 2018-11-27 |
Family
ID=64389133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820657813.1U Expired - Fee Related CN208153826U (en) | 2018-05-04 | 2018-05-04 | Pneumatic control valve control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208153826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458820A (en) * | 2022-02-15 | 2022-05-10 | 中船动力研究院有限公司 | Valve control device applied to waste gas treatment system |
-
2018
- 2018-05-04 CN CN201820657813.1U patent/CN208153826U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458820A (en) * | 2022-02-15 | 2022-05-10 | 中船动力研究院有限公司 | Valve control device applied to waste gas treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208153826U (en) | Pneumatic control valve control device | |
| CN103899828A (en) | Single-acting pneumatic device with adjustment and fault security functions | |
| CN109026688B (en) | Pressure regulation optimization redundancy system and method for large industrial air compressor | |
| CN107763282B (en) | A kind of control device and control method of electric control valve | |
| CN110878858A (en) | Gas path switch valve and proportional control method thereof | |
| CN203770805U (en) | Single-acting pneumatic device with adjustment and fault security functions | |
| CN203770804U (en) | Double-acting pneumatic device with adjustment and fault security functions | |
| CN207814568U (en) | A kind of atmospheric control of tank pump isolation quick action emergency valve | |
| CN106641706A (en) | Synthesis gas evacuation control valve and synthesis gas evacuation control system | |
| CN207289207U (en) | A kind of cutting route controller of laser cutting machine | |
| GB2535834A (en) | Method for segmental control of auxillary feedwater flow | |
| CN206478440U (en) | Synthesis gas is vented control valve and synthesis gas emptying control system | |
| CN211474980U (en) | Gas circuit switch valve | |
| CN210565410U (en) | Switch control gas circuit system for box cover | |
| CN209278506U (en) | Pneumatic butterfly valve self closing device | |
| CN207795537U (en) | A kind of remote control type irrigated area booster pump automatic control device | |
| CN203477560U (en) | Self-lock device of double-acting pneumatic actuator | |
| CN212745998U (en) | Gas control gas cabinet | |
| CN209100189U (en) | A kind of governor power down self-sustaining self-closing device | |
| CN107178654B (en) | A kind of regulating valve realizes the device and method of double loop automatic switchover adjusting | |
| CN216244739U (en) | Undisturbed wind pressure automatic switching system | |
| CN106051281A (en) | Control device for pneumatic piston type executing mechanism | |
| CN103899829A (en) | Double-acting pneumatic device with adjustment and fault security functions | |
| CN117170285B (en) | Device and method for controlling spraying valve of voltage stabilizer | |
| CN211306555U (en) | Air knife air supply system for BOPP film production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181127 Termination date: 20210504 |