CN102287565A - Automatic switching output control valve for pressure sensing signals and method - Google Patents
Automatic switching output control valve for pressure sensing signals and method Download PDFInfo
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- CN102287565A CN102287565A CN2011101876122A CN201110187612A CN102287565A CN 102287565 A CN102287565 A CN 102287565A CN 2011101876122 A CN2011101876122 A CN 2011101876122A CN 201110187612 A CN201110187612 A CN 201110187612A CN 102287565 A CN102287565 A CN 102287565A
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- mouth
- pressure
- spool
- control valve
- oil
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Abstract
The invention relates to an automatic switching output control valve for pressure sensing signals and a method. The control valve comprises a pressure switching control valve body, a switching-out control valve core component, a switching-in control valve core component, a main switching valve body, a main switching valve core, a switching-in pressure regulating component, a forcing low-speed valve body and a forcing low-speed valve core. The right side of the pressure switching control valve body is fixedly provided with the main switching valve body, the lower part of the main switching valve body is fixedly connected with the forcing low-speed valve body, the forcing low-speed valve core is arranged in the forcing low-speed valve body, the main switching valve core in the main switching valve body is vertically connected with the switching-out control valve core component in the pressure switching control valve body, and the outer side of the main switching valve body at the right end of the main switching valve core is provided with the switching-in pressure regulating component. The sensitivity of the device can be improved while the flow capacity of the existing control valve is guaranteed.
Description
Technical field
The invention belongs to the control valve technical field, particularly relate to a kind of pressure sensitive signal automatic switchover output control valve and method.
Background technique
Control valve claims modulating valve again, is the main performance element instrument in the industrial process control, by accepting to regulate the control signal of control unit output, removes to change fluid flow by power operation.Control valve generally is made up of actuator and valve.If join the power that actuator uses by it, that control valve can be divided into is pneumatic, electronic, surge, manually and five kinds of self-powering types, it promptly is the pneumatic control valve of power source with pressurized air, with the electricity is the motor-operated control valve of power source, with liquid medium (as wet goods) pressure is the electricity of the power control valve that surges, manually operated hand control valve, the pressure that relies on medium self in the valve of flowing through or temperature are as the direct-operated regulator of driven by energy, in addition, by its function and characteristic branch, also have solenoid valve, electronic type, intellectual, field bus type control valve etc.
But when flow was high, sensitivity descended at existing control valve, thereby can't adapt to complicated operating mode.
Summary of the invention
Technical problem to be solved by this invention provides a kind of pressure sensitive signal automatically switch output control valve and method, can guarantee but under the situation of existing control valve through-current capability the sensitivity that improves device.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of pressure sensitive signal to automatically switch and export control valve, comprise pressure switching controls valve body, cut out the control valve core assembly, incision control valve core assembly, main switching valve, the main spool that switches, incision pressure adjusting part, force the low speed valve body and force the low speed spool, described pressure switching controls valve body right side is mounted with main switching valve, main switching valve bottom is connected and fixed forces the low speed valve body and forces the low speed valve inner that pressure low speed spool is installed, main in the main switching valve switches and cuts out that the control valve core assembly is vertical to be connected in spool and the pressure switching controls valve body, and the main main switching valve outside of switching the spool right-hand member also is equipped with cuts the pressure adjusting part.
Be connected for screw between described pressure switching controls valve body and the main switching valve.
A kind of working pressure induced signal automaticallyes switch and exports the method for control valve, comprises the following steps:
(1) when the fixed signal output precision does not have pilot pressure input PP mouth: the fixed signal spool is in the home position, and P mouth pressure oil communicates with B mouth signal port, and A mouth signal port communicates with oil return T mouth; At this moment, the fixed signal mouth is the output of B mouth, the oil extraction of A mouth;
(2) when the fixed signal output precision has pilot pressure input PP mouth:
During original state, high voltage induction end pressure oil directly communicates with oil return inlet T by low pressure induction control spool, and P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of A mouth, the oil extraction of B mouth;
(3) when pilot pressure promotion fixed signal spool is in left position, P mouth pressure oil enters low pressure induction control spool bottom, promoting low pressure induction control spool moves up, P mouth pressure oil enters into high voltage induction control spool left end, when pressure reaches high voltage induction adjusting part preheating setting pressure, pressure oil promotes high voltage induction control spool, and the main spool that switches of promotion moves right; Simultaneously, P mouth pressure oil communicates with signal port B mouth by the main spool that switches, and A mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of B mouth, the oil extraction of A mouth; Because high voltage induction control spool induction open area is much smaller than opening back pressure active area, when the P mouth pressure was lower than the high voltage induction preheating setting pressure, main switching valve can not return to original state, did not promptly change signal port output;
(4) when the P mouth pressure was lower than low pressure induction control valve core assembly precompression, low pressure induction control valve core reset moved down, and high voltage induction end pressure oil directly communicates with oil return inlet T, and main switching valve resets; P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of A mouth, the oil extraction of B mouth.
Beneficial effect
Advantage of the present invention has:
1, high induction sensitivity is impacted for a short time, and reaction is fast;
2, through-current capability is big, the pressure loss is little;
3, iso standard interface.
Description of drawings
Fig. 1 is a sectional view of the present invention.
Fig. 2 is a circuit controling drawing of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
As shown in Figure 1, a kind of pressure sensitive signal automaticallyes switch and exports control valve, comprise pressure switching controls valve body 1, cut out control valve core assembly 2, incision control valve core assembly 3, main switching valve 4, the main spool 5 that switches, incision pressure adjusting part 6, force low speed valve body 7 and force low speed spool 8, described pressure switching controls valve body 1 right side is mounted with main switching valve 4, main switching valve 4 bottoms are connected and fixed forces low speed valve body 7 and forces low speed valve body 7 inside that pressure low speed spool 8 is installed, main in the main switching valve 4 switches cutting out 2 vertical connections of control valve core assembly in spool 5 and the pressure switching controls valve body 1, and main switching valve 4 outsides of main switching spool 5 right-hand members also are equipped with cuts pressure adjusting part 6.
Be connected for screw between described pressure switching controls valve body 1 and the main switching valve 4.
As shown in Figure 2, a kind of pressure sensitive signal automaticallyes switch and exports the control valve method, comprises
1, the fixed signal output precision does not have pilot pressure input PP mouth: the fixed signal spool is in the home position, and P mouth pressure oil communicates with B mouth signal port, and A mouth signal port communicates with oil return T mouth.At this moment, the fixed signal mouth is the output of B mouth, the oil extraction of A mouth.
2, the fixed signal output precision has pilot pressure input PP mouth:
During original state, high voltage induction end pressure oil directly communicates with oil return inlet T by low pressure induction control spool.P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth.At this moment, signal port is the output of A mouth, the oil extraction of B mouth;
When pilot pressure promotion fixed signal spool is in left position, P mouth pressure oil enters low pressure induction control spool bottom, promoting low pressure induction control spool moves up, P mouth pressure oil enters into high voltage induction control spool left end, when pressure reaches high voltage induction adjusting part preheating setting pressure, pressure oil promotes high voltage induction control spool, and the main spool that switches of promotion moves right.Simultaneously, P mouth pressure oil communicates with signal port B mouth by the main spool that switches, and A mouth signal port communicates with oil return T mouth.At this moment, signal port is the output of B mouth, the oil extraction of A mouth.Because high voltage induction control spool induction open area is much smaller than opening back pressure active area, when the P mouth pressure was lower than the high voltage induction preheating setting pressure, main switching valve can not return to original state, did not promptly change signal port output.
When the P mouth pressure was lower than low pressure induction control valve core assembly precompression, low pressure induction control valve core reset moved down, and high voltage induction end pressure oil directly communicates with oil return inlet T, and main switching valve resets.P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth.At this moment, signal port is the output of A mouth, the oil extraction of B mouth.
1, maximum service pressure: 24.5Mpa;
2, Forced Valve cracking pressure: 1.5Mpa;
3, maximum output flow: the 60L/min of signal port;
4, high voltage induction (incision) is regulated pressure: 12-22.5Mpa;
5, low pressure induction (cutting out) preset pressure: 3.2Mpa.
Claims (3)
1. control valve is exported in a pressure sensitive signal automatic switchover, comprise pressure switching controls valve body (1), cut out control valve core assembly (2), incision control valve core assembly (3), main switching valve (4), the main spool (5) that switches, incision pressure adjusting part (6), force low speed valve body (7) and force low speed spool (8), it is characterized in that: described pressure switching controls valve body (1) right side is mounted with main switching valve (4), main switching valve (4) bottom is connected and fixed forces low speed valve body (7) and forces low speed valve body (7) inside that pressure low speed spool (8) is installed, main in the main switching valve (4) switches cutting out vertical connection of control valve core assembly (2) in spool (5) and the pressure switching controls valve body (1), also is equipped with outside the main switching valve (4) of main switching spool (5) right-hand member and cuts pressure adjusting part (6).
2. a kind of pressure sensitive signal as claimed in claim 1 output control valve that automaticallyes switch is characterized in that: be connected for screw between described pressure switching controls valve body (1) and the main switching valve (4).
3. a method of using the described pressure sensitive signal automatic switchover of claim 1 output control valve comprises the following steps:
(1) when the fixed signal output precision does not have pilot pressure input PP mouth: the fixed signal spool is in the home position, and P mouth pressure oil communicates with B mouth signal port, and A mouth signal port communicates with oil return T mouth; At this moment, the fixed signal mouth is the output of B mouth, the oil extraction of A mouth;
(2) when the fixed signal output precision has pilot pressure input PP mouth:
During original state, high voltage induction end pressure oil directly communicates with oil return inlet T by low pressure induction control spool, and P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of A mouth, the oil extraction of B mouth;
(3) when pilot pressure promotion fixed signal spool is in left position, P mouth pressure oil enters low pressure induction control spool bottom, promoting low pressure induction control spool moves up, P mouth pressure oil enters into high voltage induction control spool left end, when pressure reaches high voltage induction adjusting part preheating setting pressure, pressure oil promotes high voltage induction control spool, and the main spool that switches of promotion moves right; Simultaneously, P mouth pressure oil communicates with signal port B mouth by the main spool that switches, and A mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of B mouth, the oil extraction of A mouth; Because high voltage induction control spool induction open area is much smaller than opening back pressure active area, when the P mouth pressure was lower than the high voltage induction preheating setting pressure, main switching valve can not return to original state, did not promptly change signal port output;
(4) when the P mouth pressure was lower than low pressure induction control valve core assembly precompression, low pressure induction control valve core reset moved down, and high voltage induction end pressure oil directly communicates with oil return inlet T, and main switching valve resets; P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of A mouth, the oil extraction of B mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110187612 CN102287565B (en) | 2011-07-05 | 2011-07-05 | Automatic switching output control valve for pressure sensing signals and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110187612 CN102287565B (en) | 2011-07-05 | 2011-07-05 | Automatic switching output control valve for pressure sensing signals and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102287565A true CN102287565A (en) | 2011-12-21 |
| CN102287565B CN102287565B (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110187612 Expired - Fee Related CN102287565B (en) | 2011-07-05 | 2011-07-05 | Automatic switching output control valve for pressure sensing signals and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291998A (en) * | 2012-02-29 | 2013-09-11 | 费希尔控制国际公司 | Time-stamped emissions data collection for process control devices |
| CN103697213A (en) * | 2013-12-23 | 2014-04-02 | 新乡市平原工业滤器有限公司 | Electronic control pressure regulating valve assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1181475A (en) * | 1996-10-28 | 1998-05-13 | 速睦喜股份有限公司 | Pilot 3-port transfer valve |
| US20050269539A1 (en) * | 2003-06-05 | 2005-12-08 | Wolfgang Schulz | Tank vent valve |
| CN101324280A (en) * | 2007-06-15 | 2008-12-17 | Smc株式会社 | Manifold-type solenoid valve apparatus having stop valve |
| CN202266531U (en) * | 2011-07-05 | 2012-06-06 | 宁波斯达弗液压传动有限公司 | A pressure sensing signal automatic switchover output control valve |
-
2011
- 2011-07-05 CN CN 201110187612 patent/CN102287565B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1181475A (en) * | 1996-10-28 | 1998-05-13 | 速睦喜股份有限公司 | Pilot 3-port transfer valve |
| US20050269539A1 (en) * | 2003-06-05 | 2005-12-08 | Wolfgang Schulz | Tank vent valve |
| CN101324280A (en) * | 2007-06-15 | 2008-12-17 | Smc株式会社 | Manifold-type solenoid valve apparatus having stop valve |
| CN202266531U (en) * | 2011-07-05 | 2012-06-06 | 宁波斯达弗液压传动有限公司 | A pressure sensing signal automatic switchover output control valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291998A (en) * | 2012-02-29 | 2013-09-11 | 费希尔控制国际公司 | Time-stamped emissions data collection for process control devices |
| US9625349B2 (en) | 2012-02-29 | 2017-04-18 | Fisher Controls International Llc | Time-stamped emissions data collection for process control devices |
| CN103697213A (en) * | 2013-12-23 | 2014-04-02 | 新乡市平原工业滤器有限公司 | Electronic control pressure regulating valve assembly |
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| Publication number | Publication date |
|---|---|
| CN102287565B (en) | 2013-10-23 |
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