CN220646347U - Integrated three-break protection device of double-acting pneumatic actuating mechanism - Google Patents
Integrated three-break protection device of double-acting pneumatic actuating mechanism Download PDFInfo
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- CN220646347U CN220646347U CN202322419314.2U CN202322419314U CN220646347U CN 220646347 U CN220646347 U CN 220646347U CN 202322419314 U CN202322419314 U CN 202322419314U CN 220646347 U CN220646347 U CN 220646347U
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- acting pneumatic
- actuating mechanism
- air
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- 238000001914 filtration Methods 0.000 claims abstract description 25
- 230000000149 penetrating effect Effects 0.000 claims description 25
- 230000001681 protective effect Effects 0.000 claims description 25
- 230000000694 effects Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000012824 chemical production Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Abstract
The utility model relates to the technical field of automatic control of meters, in particular to an integrated three-break protection device of a double-acting pneumatic actuator, which aims to solve the problems that an adjusting valve cannot be kept in place and the continuous regulation and control of a process medium in a loop and the stable operation of equipment are met in the current metallurgical and chemical production process because the existing double-acting pneumatic actuator is in any fault state of air source fault, power outage and signal disconnection of a valve positioner. The device is through the cooperation use of three-break protection device internal air filtration relief pressure valve, current signal detection switch, solenoid valve, protection valve and pressure switch and intelligent valve locator, makes the governing valve keep normal position and resume normal state under the air supply fault state, realizes intelligent valve locator position detecting system and the split installation of control unit, eliminates the mechanical vibration that transmits for intelligent valve locator in equipment body and the pipeline operation, ensures the holistic automatic steady operation of equipment.
Description
Technical Field
The utility model relates to the technical field of automatic control of instruments, in particular to an integrated three-break protection device of a double-acting pneumatic actuating mechanism.
Background
The double-acting pneumatic actuating mechanism takes compressed air or nitrogen as a power air source, and cooperates with an intelligent electric valve positioner as a control part, so that the opening positioning of the valve is realized, and the opening degree of the valve is regulated and controlled by receiving a standard current signal given by a regulator and converting the signal into thrust so as to push and control the opening degree of a straight travel regulating valve. In the current metallurgical and chemical production process, as the double-acting pneumatic actuating mechanism in the prior art is used, the regulating valve cannot be kept in place in time under any fault state of air source fault, power outage and disconnection of the input signal of the valve positioner, and the continuous regulation and uninterrupted operation requirement of a process medium in the regulating loop is met, particularly when indexes such as actual operating environment temperature, moisture and vibration in the field exceed the bearable range of the intelligent electric valve positioner in severe application scenes, the intelligent valve positioner is often damaged to different degrees, an automatic regulating system cannot be put into operation normally, and finally normal operation of production cannot be guaranteed, therefore, various measures are adopted to improve the operation environment of equipment, and the targeted improvement of production field instrument equipment is increasingly important to realize the standard reaching of the field production automation degree.
Disclosure of Invention
The utility model provides an integrated three-break protection device for a double-acting pneumatic actuating mechanism, which aims to solve the problems in the background.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a three protection device that breaks of double-acting pneumatic actuating mechanism integrated form, includes the protective housing, the inboard of protective housing is equipped with air filtering relief pressure valve, intelligent valve positioner, two three way solenoid valve, two effect guarantor's position valve, pressure switch and electronic switch, and air filtering relief pressure valve is connected with intelligent valve positioner, two three way solenoid valve respectively, and intelligent valve positioner and two effect guarantor's position valve are connected, two three way solenoid valve and two effect guarantor's position valve all with pressure switch are connected, and air filtering relief pressure valve is connected with the air supply that is located the protective housing outside, and two effect guarantor's position valve and the double-acting pneumatic actuating mechanism that is located the protective housing outside are connected, and the outside of protective housing still is equipped with the power, and the power is all connected with electronic switch, pressure switch, intelligent valve positioner and two three way solenoid valve.
Further, an air source access port is formed in one side of the protection box, an air pipe on the air filtering pressure reducing valve penetrates through the air source access port and is connected with the air source, an upper air cylinder interface of the double-acting pneumatic actuating mechanism and a lower air cylinder interface of the double-acting pneumatic actuating mechanism are formed in the other side of the protection box, and an air pipe on the double-acting position protecting valve penetrates through the upper air cylinder interface of the double-acting pneumatic actuating mechanism and the lower air cylinder interface of the double-acting pneumatic actuating mechanism and is connected with an air cylinder of the double-acting pneumatic actuating mechanism.
Further, an air source inlet stop valve is arranged between the air filtering pressure reducing valve and the air source.
Further, the protective box is located one side of the air source access port and is further provided with a pressure switch normal signal wiring penetrating port and a pressure switch alarm signal wiring penetrating port, and signal cables of the pressure switch are arranged through the pressure switch normal signal wiring penetrating port and the pressure switch alarm signal wiring penetrating port.
Further, a cable penetrating port is formed in one side, close to the power supply, of the protective box, and signal cables of the intelligent valve positioner and the electronic switch are connected with the power supply through the cable penetrating port.
Further, a non-contact type position sensor is arranged on the double-acting pneumatic actuating mechanism, a non-contact type position sensor cable penetrating opening is further formed in one side, close to the double-acting pneumatic actuating mechanism, of the protective box, and the non-contact type position sensor penetrates through the non-contact type position sensor cable penetrating opening and is connected with the intelligent valve positioner.
Further, the air filtering reducing valve is a reducing valve of YT-200 model, the intelligent valve positioner is a valve positioner of 6DR5020 model of Siemens, the two-position three-way electromagnetic valve is a electromagnetic valve of 3V210-08-NC model, the double-acting position-preserving valve is a position-preserving valve of ZPB-03 model, the electronic switch is a switch of XCK-T-H29 model, the pressure switch is a switch of CEME.S.P.A model, the double-acting pneumatic actuator is a pneumatic actuator of ZSL (D2) model, the non-contact type position sensor is a position sensor of 6DR4004 model, the protective box is a protective box of YXWQ-1056III model, and the stop valve is a switch of DN50 or PN16 model.
The utility model has the following beneficial effects:
the utility model provides an integrated three-break protection device for a double-acting pneumatic actuator, which mainly comprises a pressure reducing valve, an electromagnetic valve, a position-preserving valve, a switch, a power supply, a stop valve and other components, wherein the air filtering pressure reducing valve, a current signal detection switch, the electromagnetic valve, the position-preserving valve and a pressure switch in the three-break protection device are matched with an intelligent valve positioner, so that the regulating valve can be kept in situ and is restored to a normal state under the state of air source faults and the like, the split installation of a position detection system of the intelligent valve positioner and a control unit is realized through a non-contact position sensor, the mechanical vibration transmitted to the intelligent valve positioner in the operation of a device body and a pipeline is effectively eliminated, the integral automatic stable operation of the device is ensured, and the problem that the regulating valve can not be kept in situ and the continuous regulation and control of a process medium in a loop and the stable operation of the device can not be met under any fault state of the air source faults, power supply outage and the valve positioner signal disconnection of the existing pneumatic actuator in the metallurgical chemical production process at present is solved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model.
The reference numerals have the following meanings:
1. an air filtration pressure relief valve; 2. an intelligent valve positioner; 3. a two-position three-way electromagnetic valve; 4. a double acting position protection valve; 5. a pressure switch; 6. an electronic switch; 7. a double-acting pneumatic actuator; 8. a non-contact position sensor; 9. a protective box; 10. a lower cylinder interface of the double-acting pneumatic actuating mechanism; 11. an upper cylinder interface of the double-acting pneumatic actuating mechanism; 12. the normal signal of the pressure switch is connected with the wire through port; 13. the alarm signal of the pressure switch is connected with the wire penetrating port; 14. an air source access port; 15. a gas source; 16. a cable penetration port; 17. a non-contact position sensor cable entry port; 18. an air source inlet shutoff valve; 19. and a power supply.
Detailed Description
The utility model will be further described with reference to the drawings and the specific examples.
As shown in fig. 1, an integrated three-break protection device for a double-acting pneumatic actuator comprises a protection box 9, wherein an air source access port 14 is formed in one side of the protection box 9, an upper cylinder interface 11 and a lower cylinder interface 10 of the double-acting pneumatic actuator are formed in the other side of the protection box 9, a double-acting pneumatic actuator 7 is mounted on the outer side of the protection box 9, and a double-acting position protection valve 4 is connected with a cylinder of the double-acting pneumatic actuator 7 through the upper cylinder interface 11 and the lower cylinder interface 10 of the double-acting pneumatic actuator. An air source 15 is further arranged on the outer side of the protective box 9, the air source 15 is connected with an inlet of the air filtering pressure reducing valve 1 on the inner side of the protective box 9 through an air source access port 14, and an outlet of the air filtering pressure reducing valve 1 is respectively connected with an air source inlet of the intelligent valve positioner 2 and the two-position three-way electromagnetic valve 3. The air source outlet of the two-position three-way electromagnetic valve 3 is respectively connected with a double-acting position-keeping valve 4 and a pressure switch 5, and the double-acting position-keeping valve 4 is also connected with the air source pressure outlet of the intelligent valve positioner 2. The outside of the protective box 9 is also provided with a power supply 19, the inside of the protective box 9 is provided with an electronic switch 6, and the power supply 19 is connected with the electronic switch 6, the intelligent valve positioner 2 and the pressure switch 5. An air source inlet stop valve 18 is also arranged between the air filtering reducing valve 1 and the air source 15. The protective box 9 is located one side of the air source access port 14 and is also provided with a pressure switch normal signal wiring penetrating port 12 and a pressure switch alarm signal wiring penetrating port 13, and signal cables of the pressure switch 5 are all arranged through the pressure switch normal signal wiring penetrating port 12 and the pressure switch alarm signal wiring penetrating port 13. A cable penetrating port 16 is formed in one side, close to the power supply 19, of the protective box 9, and signal cables of the intelligent valve positioner 2 and the electronic switch 6 are connected with the power supply 19 through the cable penetrating port 16. The non-contact type position sensor 8 is arranged on the double-acting pneumatic actuating mechanism 7, a non-contact type position sensor cable penetrating opening 17 is further formed in one side, close to the double-acting pneumatic actuating mechanism 7, of the protective box 9, and the non-contact type position sensor 8 penetrates through the non-contact type position sensor cable penetrating opening 17 and is connected with the intelligent valve positioner 2.
Further, the highest working pressure of the air filtering pressure reducing valve 1 is 1.0MPa, the filtering precision is 5 mu m, the pressure regulating range is 0.05-0.8 MPa, the air filtering pressure reducing valve 1 filters particles larger than 5 mu m in the compressed air source 15 and reduces the pressure to 0.5MPa, the maximum bearing pressure of the air source inlet stop valve 18 is 1.6MPa, and the air filtering pressure reducing valve can be used for cutting off the air source 15 when the air filtering pressure reducing valve 1 is overhauled or replaced; the pressure switch 5 has the functions of pressure display and low-limit alarm output, the pressure range is 0-1.6 MPa, the power supply voltage is 24V.DC, the measuring gas circuit of the pressure switch 5 is connected to the outlet pipeline of the two-position three-way electromagnetic valve 3, when the pressure of the gas source 15 is less than or equal to 0.3MPa, the low-limit alarm output of the pressure switch 5 is performed, and the alarm is connected for alarm; the on-site power supply 19 and the DCS send 4-20 mA.DC control signals into the electronic switch 6 and the intelligent valve positioner 2, and when the signals of the intelligent valve positioner 2 fail, the electronic switch 6 controls the two-position three-way electromagnetic valve 3 to reset and exhaust; the non-contact position sensor 8 can realize split installation of a position detection system and a control unit of the intelligent valve positioner 2, and effectively eliminates vibration and impact load transferred to the intelligent valve positioner 2 in the running process of the equipment body, the pipeline and the like.
When the intelligent valve positioner is specifically applied, an N2 or compressed air source 15 with the pressure of 0.8-1.0 MPa is accessed from the outside, the air enters the air filtering and reducing valve 1 through the air source stop valve 18, the air filtering and reducing valve 1 filters and reduces the pressure of the air source 15 to 0.5MPa, the air is respectively sent to the working air source inlets of the two-position three-way electromagnetic valve 3 and the intelligent valve positioner 2, the field power supply 19 supplies power to the electronic switch 6, the detection of a 4-20 mA current signal input in the intelligent valve positioner 2 is realized, the two-position three-way electromagnetic valve 3 is controlled to be conducted or disconnected, the double-acting position maintaining valve 4 is used for detecting the output pressure of the air filtering and reducing valve 1, when the current signals of the field air source and the power supply stage 4-20 mA are normal, the two-way input and output of the double-acting position maintaining valve 4 are in a conducting state, and the pneumatic actuator 7 realizes normal regulation and control under the control of the intelligent valve positioner 2; when the field is powered off, the electronic switch 6 is powered off, the two-position three-way electromagnetic valve 3 is reset for exhausting, the signal pressure of the double-acting position-keeping valve 4 is lost, the intelligent valve positioner 2 outputs to the working cavity of the double-acting pneumatic actuator 7 for cutting off, the actuator realizes locking, and the regulating valve is kept in position; when the air source 15 fails, the signal pressure of the double-acting position-keeping valve 4 is lost, the actuating mechanism is locked, and the position of the regulating valve is kept; when the intelligent valve positioner 2 has a signal fault, the electronic switch 6 can control the electromagnetic valve to reset and exhaust, the signal pressure of the double-acting position-keeping valve 4 is lost, the actuating mechanism realizes locking and the position keeping of the regulating valve, and meanwhile, the three-break protection device is internally matched with the pressure switch 5 for indicating and alarming the fault state.
Claims (6)
1. The utility model provides a three protection device that breaks of double-acting pneumatic actuating mechanism integrated form, includes protective housing (9), characterized by: the inside of protective housing (9) is equipped with air filtering relief pressure valve (1), intelligent valve locator (2), two tee bend solenoid valve (3), two effect guarantor's position valve (4), pressure switch (5) and electronic switch (6), air filtering relief pressure valve (1) are connected with intelligent valve locator (2), two tee bend solenoid valve (3) respectively, intelligent valve locator (2) are connected with two effect guarantor's position valve (4), two tee bend solenoid valve (3) and two effect guarantor's position valve (4) all with pressure switch (5) are connected, air filtering relief pressure valve (1) are connected with air supply (15) that are located the protective housing (9) outside, two effect guarantor's position valve (4) are connected with pneumatic actuating mechanism (7) that are located the protective housing (9) outside, the outside of protective housing (9) still is equipped with power (19), and power (19) all are connected with electronic switch (6), pressure switch (5), intelligent valve locator (2) and two tee bend solenoid valve (3).
2. The double-acting pneumatic actuator integrated three-break protection device according to claim 1, wherein: an air source access port (14) is formed in one side of the protection box (9), an air pipe on the air filtering pressure reducing valve (1) penetrates through the air source access port (14) and is connected with an air source (15), an upper air cylinder interface (11) of the double-acting pneumatic actuating mechanism and a lower air cylinder interface (10) of the double-acting pneumatic actuating mechanism are formed in the other side of the protection box (9), and an air pipe on the double-acting position protecting valve (4) penetrates through the upper air cylinder interface (11) of the double-acting pneumatic actuating mechanism and is connected with an air cylinder of the lower air cylinder interface (10) of the double-acting pneumatic actuating mechanism and an air cylinder of the double-acting pneumatic actuating mechanism (7).
3. The double-acting pneumatic actuator integrated three-break protection device according to claim 1, wherein: an air source inlet stop valve (18) is further arranged between the air filtering pressure reducing valve (1) and the air source (15).
4. The double-acting pneumatic actuator integrated three-break protection device according to claim 2, characterized in that: the protection box (9) is located one side of the air source access port (14) and is further provided with a pressure switch normal signal wiring penetrating port (12) and a pressure switch alarm signal wiring penetrating port (13), and signal cables of the pressure switch (5) are arranged through the pressure switch normal signal wiring penetrating port (12) and the pressure switch alarm signal wiring penetrating port (13).
5. The integrated triple break protection device for double acting pneumatic actuator of claim 4, wherein: a cable penetrating opening (16) is formed in one side, close to a power supply (19), of the protective box (9), and signal cables of the intelligent valve positioner (2) and the electronic switch (6) are connected with the power supply (19) through the cable penetrating opening (16).
6. The double-acting pneumatic actuator integrated three-break protection device according to claim 1, wherein: the intelligent valve positioning device is characterized in that a non-contact type position sensor (8) is arranged on the double-acting pneumatic actuating mechanism (7), a non-contact type position sensor cable penetrating opening (17) is further formed in one side, close to the double-acting pneumatic actuating mechanism (7), of the protective box (9), and the non-contact type position sensor (8) penetrates through the non-contact type position sensor cable penetrating opening (17) and is connected with the intelligent valve positioning device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322419314.2U CN220646347U (en) | 2023-09-06 | 2023-09-06 | Integrated three-break protection device of double-acting pneumatic actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322419314.2U CN220646347U (en) | 2023-09-06 | 2023-09-06 | Integrated three-break protection device of double-acting pneumatic actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220646347U true CN220646347U (en) | 2024-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322419314.2U Active CN220646347U (en) | 2023-09-06 | 2023-09-06 | Integrated three-break protection device of double-acting pneumatic actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220646347U (en) |
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2023
- 2023-09-06 CN CN202322419314.2U patent/CN220646347U/en active Active
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