CN101126467A - Solenoid valve for gas automatic cutting in emergency - Google Patents
Solenoid valve for gas automatic cutting in emergency Download PDFInfo
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- CN101126467A CN101126467A CNA2007100448338A CN200710044833A CN101126467A CN 101126467 A CN101126467 A CN 101126467A CN A2007100448338 A CNA2007100448338 A CN A2007100448338A CN 200710044833 A CN200710044833 A CN 200710044833A CN 101126467 A CN101126467 A CN 101126467A
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Abstract
The invention relates to an emergent automatic gas cut-off solenoid valve. A control assembly is connected with the case of the valve body, an actuator is arranged in the case of the valve body, a valve plug is arranged in the actuator; a solenoid is arranged in the valve plug and a mandrel vertically runs through the actuator, the top of the mandrel is fixed with a hand-operated opening assembly by the thread; a hole for the control assembly indicator is arranged on the case of the valve body, the control assembly is controlled by the external signal and the power signal and outputs the On/Off signal of the valve and the signals are displayed by the control assembly indicator. The invention has the advantages that three valve cut-off modes can be provided, which are automatic cut-off in power outage, automatic cut-off by externally-controlled contact and manual cut-off; the valve cut-off speed is high, the gas supply can be cut off within one second; the valve can be cut off automatically by an electric mode aiming at the different kinds of detected emergent cases on gas safety, which includes but not limited to the power outage; the manual opening can keep the open state without dynamic power.
Description
Technical field
The present invention relates to a kind of solenoid valve, particularly a kind of solenoid valve for gas automatic cutting in emergency that is installed on the town gas pipe.
Background technique
At present, solenoid valve is cut off in the combustion gas that is installed on the town gas pipe automatically, and its electric control box is external, and the valve button of opening of external electric control box is managed improperly, can cause fatal mistake to close/breakdown action.The unlatching of this class valve must continue energising, and the temperature of switching on for a long time raises, and easily causes the damage of electromagnetic coil, also is subject to the influence of mains ripple, mistake occurs and closes valve, brings difficulty to management.Prevent that valve from opening by mistake the most effective manual intervention measure of opening and being: only allow manually to open by the manual operating device of valve self.The automatic cutting in emergency valve is in case open and close, open before the valve should by the professional workforce to on-the-spot carry out safety inspection and get rid of possible accident potential after, can manually open, the recovery air feed, gas valve opens by mistake to open and can cause fatal consequence.
Summary of the invention
Technical problem of the present invention is that a kind of built-in controller and can the on-the-spot artificial solenoid valve for gas automatic cutting in emergency of opening will be provided.
In order to solve above technical problem, the invention provides a kind of solenoid valve for gas automatic cutting in emergency, one control unit is connected with valve shell, be provided with an actuator in the valve shell, be provided with a spool in the actuator, one electromagnetic coil is arranged in the spool, one mandrel vertically runs through actuator, the top of mandrel and a manual opening assembly are fixed by screw thread, valve shell is provided with the aperture of control unit tutorial light, control unit is controlled by external signal and power supply signal, the closing and the opening state signal of output valve, and show it by the control unit tutorial light.
Described manually opened assembly, it comprises little axle, little axle sleeve, cam and button, one end of described little axle is a step, the other end is an outside thread, little outer shaft sleeve has the little axle sleeve of a longitudinal movement, the step radius of little axle is greater than the inside radius of little axle sleeve, and the top and the button of little axle sleeve are fixed on the cam by pin.When no any power, hand is pinched cam and is the fulcrum rotation with the camber line end of cam, promptly opens valve; Press the button throttle down.
Control unit is provided with a CPU, is connected with input circlult, receives and sentence external control signal; Be connected with output circuit, export closing or the opening state signal of gas valve; Be connected with measuring circuit, measure the inductance value of electromagnetic valve coil, output is driven valve or is closed valve or the fault instruction; Be connected with driving circuit for electromagnetic valve with power sense circuit, solenoid valve is closed in control; Be connected the record of storage gas valve open and close with memory circuit; Be connected with display circuit, show and open valve, pass valve, fault state.
Described measuring circuit is, 12 pin of CPU are exported a pulsed voltage behind one-level amplifier D3B, be connected with the resistance R 13 of electromagnetic valve coil Lx serial connection, after the RLx time-delay, deliver to next stage amplifier D3A, its output feeds back to 11 pin of CPU, CPU detects the time-delay Δ T of its output pulse and feedback pulse, compare with stored threshold, draw the inductance value size of in good time electromagnetic valve coil Lx, output is closed valve, is opened valve, fault indication signal respectively.If inductance value is 0, then solenoid valve is a fault, and display modular is yellow; If inductance value is less than threshold value, then solenoid valve closes valve, and display modular is red; If inductance value is more than or equal to threshold value, valve opening solenoid valve then, display modular be a green;
Described power sense circuit and driving circuit for electromagnetic valve, be with a PNP triode V14 and a NPN triode V11 serial connection, NPN triode collection V11 collector series connection electromagnetic valve coil Lx, its base stage is connected with CPU through diode V13, PNP triode V14 emitter connects big capacitor C 14 ground connection, another big capacitor C 15 connects base stage by a resistance R 23, the electromagnetic valve coil Lx normally opened contact of NPN transistor collector V11 serial connection connects big capacitor C 3 ground connection, and is connected to power supply by a resistance R 6.
A kind of controlling method of solenoid valve for gas automatic cutting in emergency comprises following job step:
1) start;
2) System self-test, the green reddish yellow of display modular respectively shows one time;
3) central processing unit (CPU) reads the comparison threshold of the valve inductance in the storage;
4) start measurement module, measure the RL time constant;
5) calculate inductance value;
6) whether inductance value is 0 or less than threshold value or greater than threshold value;
7) if inductance value is 0, then display modular is yellow, and output module stops;
8) if inductance value less than threshold value, display modular be red, the output module startup;
9) if inductance value more than or equal to threshold value, display modular be the green, output module stops;
Does 10) load module have signal? no signal changes the 12nd) step;
11) signal is arranged, delay time and close valve after 1 second;
Does 12) power supply cut off the power supply?, do not change the 4th) step;
13) time-delay was closed valve after 10 seconds;
14) finish.
Superior effect of the present invention is:
1) is applicable to the safety protection of regional gas pipeline, is used to improve the safety control ability of pipeline behind the valve;
2) the present invention can include but not limited to have a power failure at the various gas safe urgencies that detected, can cross electric control mode automatic-closing valve, cuts off source of the gas;
3) it is explosion-proof that envelope is watered in control unit employing of the present invention, stops spark at all and produce, and being contained in does not have potential safety hazard on the gas pipeline, can not become the ignition source;
4) the present invention adopts on-site manual to open, and driving valve must meet the characteristics that gas accidents is handled to on-the-spot manual operation;
5) the exportable valve switch feedback of status of the present invention signal is supported the requirement of remote monitoring and administration;
6) pass valve speed is fast, can cut off source of the gas within 1 second;
7) the present invention has three kinds of pass valve modes: for power failure automatic closing, external control make contact automatic closing with manually close valve;
8) adopt multi-stage sealed measure on the structure, processing precise is guaranteed tightness and Security;
Adopt extraordinary NBR/FKM rubber on the material, under the gas environment 15 years anti-aging.
Description of drawings
Fig. 1 is a form structure schematic representation of the present invention;
Fig. 2 is the basic circuit diagram of control unit of the present invention;
Fig. 3 is the workflow diagram of controlling method of the present invention;
Fig. 4 is the structural representation of manually opened assembly of the present invention;
Fig. 5 is the partial enlarged drawing of Fig. 4;
Fig. 6 is the exploded view of Fig. 5;
Fig. 7 is the circuit diagram of external signal input circlult;
Fig. 8 is the circuit diagram of power sense circuit;
Fig. 9 is the circuit diagram of driving circuit for electromagnetic valve;
Figure 10 is the circuit diagram of measuring circuit;
Figure 11 is the circuit diagram of valve state output circuit;
Figure 12 is the circuit diagram of memory circuit;
The number in the figure explanation:
The 1-control unit;
11-CPU; 12-amplifier D3B;
13-amplifier D3A; 14--electromagnetic valve coil Lx;
The 2-valve shell;
The 3-mandrel;
The little axle of 4-; The 41-step;
The little axle sleeve of 5-; The 6-cam;
The 7-pin.
Embodiment
See also shown in the accompanying drawing, the invention will be further described.
As Fig. 1 form structure schematic representation of the present invention, shown in the structural representation of the basic circuit diagram of Fig. 2 control unit of the present invention and Fig. 4 manually opened assembly of the present invention, the invention provides a kind of solenoid valve for gas automatic cutting in emergency, control unit 1 is put into the embedding box for circuit board, form with the casting glue embedding of solidifying, control unit 1 has the satisfied envelope requirement of explosion of watering, do not produce spark and have moistureproof antihunt action, improved the reliability of circuit board, with control unit 1 valve shell 2 of packing into, cover plate of outer casing links together control unit 1 and valve shell 2 with screw and sealing material, has the dustproof and waterproof effect; Be provided with an actuator in the valve shell 2, be provided with a spool in the actuator, one electromagnetic coil is arranged in the spool, two leads of control unit 1 are connected with two leads that electromagnetic coil is drawn, introduce in the electromagnetic coil with the energy that guarantees the solenoid-driven module, same these two leads also are used for the valve switch state-detection, and the inductance value signal is incorporated in the control unit 1, by central processing unit (CPU) it are judged; One mandrel 3 vertically runs through actuator, the top of mandrel 3 and a manual opening assembly are fixed by screw thread, valve shell 2 is provided with the aperture of control unit 1 tutorial light, connect a transparent dust cover on the aperture, can appear from this aperture when making the tutorial light of control unit 1 luminous, and can the guarantor can externally observe, this luminous indicating lamp is used to indicate needed valve state, as on off state, fault state etc., control unit 1 is controlled by external signal and power supply signal, closing and the opening state signal of output valve, and show it by the control unit tutorial light.
Shown in the exploded view of the partial enlarged drawing of the structural representation of Fig. 4 manually opened assembly of the present invention, Fig. 5 and Fig. 6, described manually opened assembly, it comprises little axle 4, little axle sleeve 5, cam 6 and button, one end of described little axle 4 is a step 41, the other end is an outside thread, the little axle 4 outer little axle sleeves 5 that are with a longitudinal movement, step 41 radiuses of little axle 4 are greater than the inside radius of little axle sleeve 5, and the top of little axle sleeve 5 and button are fixed on the cam 6 by pin 7.When no any power, hand is pinched cam 6 and is the fulcrum rotation with the camber line end of cam 6, promptly opens valve; Press the button throttle down.
Shown in the basic circuit diagram of Fig. 3 control unit of the present invention, control unit is provided with a CPU11, is connected with input circlult, receives and sentence external control signal; Be connected with output circuit, export closing or the opening state signal of gas valve; Be connected with measuring circuit, measure the inductance value of electromagnetic valve coil, output is driven valve or is closed valve or the fault instruction; Be connected with driving circuit for electromagnetic valve with power sense circuit, solenoid valve is closed in control; Be connected the record of storage gas valve open and close with memory circuit; Be connected with display circuit, show and open valve, pass valve, fault state.
Shown in the circuit diagram of Figure 10 measuring circuit, described measuring circuit is, 12 pin of CPU11 are exported a pulsed voltage behind one-level amplifier D3B12, be connected with the resistance R 13 of electromagnetic valve coil Lx14 serial connection, after the RLx time-delay, deliver to next stage amplifier D3A13, its output feeds back to 11 pin of CPU11, CPU11 detects the time-delay Δ T of its output pulse and feedback pulse, compare with stored threshold, draw the inductance value size of in good time electromagnetic valve coil Lx14, output is closed valve, is opened valve, fault indication signal respectively.If inductance value is 0, then solenoid valve is a fault, and display modular is yellow; If inductance value is less than threshold value, then solenoid valve closes valve, and display modular is red; If inductance value is more than or equal to threshold value, valve opening solenoid valve then, display modular be a green; The color of the 6th, the 7 pin output control tutorial light of CPU11.
As the circuit diagram of Fig. 8 power sense circuit with shown in the circuit diagram of Fig. 9 driving circuit for electromagnetic valve, described power sense circuit and driving circuit for electromagnetic valve, be with a PNP triode V14 and a NPN triode V11 serial connection, NPN triode collection V11 collector series connection electromagnetic valve coil Lx, its base stage is connected with CPU through diode V13, PNP triode V14 emitter connects big capacitor C 14 ground connection, another big capacitor C 15 connects base stage by a resistance R 23, the electromagnetic valve coil Lx normally opened contact of NPN transistor collector V11 serial connection connects big capacitor C 3 ground connection, and is connected to power supply by a resistance R 6.Wherein, power sense circuit is to be used for receiving, to judge and processing power supply deficiency or power-off signal that be made of the RC circuit, if power supply is normal, C14 is filled electricity, and the voltage at C15 two ends is 0, and V14 ends; If the current supply circuit outage, C15 charges by R21, after after a while, and V14, the V11 conducting, the RLY1 adhesive, thus close solenoid valve; Driving circuit for electromagnetic valve is to be used to provide the output of valve switch feedback of status, if solenoid valve is in close valve state, and 19 pin of CPU11 output high level, V1 conducting, RLY
2Adhesive, COM and NO connect, and represent that current solenoid valve is in closing state.
Shown in the circuit diagram of Fig. 7 external signal input circlult, the input external control signal after R15, V17 voltage stabilizing, is sent into CPU11, is used for receiving and the judgment processing external control signal.
Shown in the circuit diagram of Figure 11 valve state output circuit, be used to provide the output of valve switch feedback of status, if solenoid valve is in close valve state, 19 pin of CPU11 output high level, V1 conducting, RLY
2Adhesive, COM and NO connect, and represent that current solenoid valve is in closing state.
Shown in the circuit diagram of Figure 12 memory circuit, D4 is clock/memory chip, it can be as required and realizes opening and close record, closing valve-type of Record ID (identity numbering), valve in conjunction with software program, as external control close valve, the pass valve or manually close valve of cutting off the power supply, and fault message.
Shown in the workflow diagram of Fig. 3 controlling method of the present invention, comprise following job step:
1) start;
2) System self-test, the green reddish yellow of display modular respectively shows one time;
3) central processing unit (CPU) reads the comparison threshold of the valve inductance in the storage;
4) start measurement module, measure the RL time constant;
5) calculate inductance value;
6) whether inductance value is 0 or less than threshold value or greater than threshold value;
7) if inductance value is 0, then display modular is yellow, and output module stops;
8) if inductance value less than threshold value, display modular be red, the output module startup;
9) if inductance value more than or equal to threshold value, display modular be the green, output module stops;
Does 10) load module have signal? no signal changes the 12nd) step;
11) signal is arranged, delay time and close valve after 1 second;
Does 12) power supply cut off the power supply?, do not change the 4th) step;
13) time-delay was closed valve after 10 seconds;
14) finish.
Change the on off state that detects valve by the inductance of measuring electromagnetic coil, judge the external power source state by detecting input voltage signal, by detecting external input signal, whether control circuit discharges the driving energy.
Claims (6)
1. solenoid valve for gas automatic cutting in emergency, it is characterized in that: a control unit is connected with valve shell, be provided with an actuator in the valve shell, be provided with a spool in the actuator, one electromagnetic coil is arranged in the spool, one mandrel vertically runs through actuator, the top of mandrel and a manual opening assembly are fixed by screw thread, valve shell is provided with the aperture of control unit tutorial light, control unit is controlled by external signal and power supply signal, closing and the opening state signal of output valve, and show it by the control unit tutorial light.
2. by the described a kind of solenoid valve for gas automatic cutting in emergency of claim 1, it is characterized in that: described manually opened assembly, it comprises little axle, little axle sleeve, cam and button, one end of described little axle is a step, the other end is an outside thread, little outer shaft sleeve has the little axle sleeve of a longitudinal movement, and the step radius of little axle is greater than the inside radius of little axle sleeve, and the top and the button of little axle sleeve are fixed on the cam by pin.
3. by the described a kind of solenoid valve for gas automatic cutting in emergency of claim 1, it is characterized in that: control unit is provided with a CPU, is connected with input circlult, receives and sentence external control signal; Be connected with output circuit, export closing or the opening state signal of gas valve; Be connected with measuring circuit, measure the inductance value of electromagnetic valve coil, output is driven valve or is closed valve or the fault instruction; Be connected with driving circuit for electromagnetic valve with power sense circuit, solenoid valve is closed in control; Be connected the record of storage gas valve open and close with memory circuit; Be connected with display circuit, show and open valve, pass valve, fault state.
4. by the described a kind of solenoid valve for gas automatic cutting in emergency of claim 3, it is characterized in that: described measuring circuit is, CPU exports a pulsed voltage after the one-level amplifier, is connected with the resistance R of electromagnetic valve coil Lx serial connection, after the RLx time-delay, deliver to the next stage amplifier, its output feeds back to CPU, and CPU detects the time-delay Δ T of its output pulse and feedback pulse, compares with stored threshold, draw the inductance value size of in good time electromagnetic valve coil, output is closed valve, is opened valve, fault indication signal respectively.
5. by the described a kind of solenoid valve for gas automatic cutting in emergency of claim 3, it is characterized in that: described power sense circuit and driving circuit for electromagnetic valve, be with a PNP and a NPN triode serial connection, NPN transistor collector serial connection electromagnetic valve coil, its base stage is connected with CPU through diode, the PNP transistor emitter connects a big capacity earth, another big electric capacity connects base stage by a resistance, the electromagnetic valve coil normally opened contact of NPN transistor collector serial connection connects big capacity earth, and is connected to power supply by a resistance.
6. the controlling method of a solenoid valve for gas automatic cutting in emergency, it is characterized in that: the job step of this method is as follows:
1) start;
2) System self-test, the green reddish yellow of display modular respectively shows one time;
3) central processing unit (CPU) reads the comparison threshold of the valve inductance in the storage;
4) start measurement module, measure the RL time constant;
5) calculate inductance value;
6) whether inductance value is 0 or less than threshold value or greater than threshold value;
7) if inductance value is 0, then display modular is yellow, and output module stops;
8) if inductance value less than threshold value, display modular be red, the output module startup;
9) if inductance value greater than threshold value, display modular be the green, output module stops;
Does 10) load module have signal? no signal changes the 12nd) step;
11) signal is arranged, delay time and close valve after 1 second;
Does 12) power supply cut off the power supply?, do not change the 4th) step;
13) time-delay was closed valve after 10 seconds;
14) finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100448338A CN100529493C (en) | 2007-08-13 | 2007-08-13 | Solenoid valve for gas automatic cutting in emergency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100448338A CN100529493C (en) | 2007-08-13 | 2007-08-13 | Solenoid valve for gas automatic cutting in emergency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101126467A true CN101126467A (en) | 2008-02-20 |
| CN100529493C CN100529493C (en) | 2009-08-19 |
Family
ID=39094559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100448338A Active CN100529493C (en) | 2007-08-13 | 2007-08-13 | Solenoid valve for gas automatic cutting in emergency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100529493C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033180A (en) * | 2010-11-11 | 2011-04-27 | 苏州合欣美电子科技有限公司 | Detection circuit for electromagnetic valve of ecological room |
| CN102758950A (en) * | 2012-07-25 | 2012-10-31 | 欧好光电控制技术（上海）有限公司 | Electromagnetic coil device comprising energy storage shutdown valve module |
| CN104633238A (en) * | 2015-03-01 | 2015-05-20 | 宁波市镇海华泰电器厂 | Electricity-saving alternating-current electromagnetic valve with triode-type switch pulse generating circuit |
| CN104676066A (en) * | 2013-11-29 | 2015-06-03 | 济南冶金化工设备有限公司 | Power-off driving device for gas cut-off valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207912A (en) * | 1978-07-03 | 1980-06-17 | Kiyotada Ichikawa | Emergency shut-off valve |
-
2007
- 2007-08-13 CN CNB2007100448338A patent/CN100529493C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033180A (en) * | 2010-11-11 | 2011-04-27 | 苏州合欣美电子科技有限公司 | Detection circuit for electromagnetic valve of ecological room |
| CN102758950A (en) * | 2012-07-25 | 2012-10-31 | 欧好光电控制技术（上海）有限公司 | Electromagnetic coil device comprising energy storage shutdown valve module |
| CN102758950B (en) * | 2012-07-25 | 2015-09-23 | 欧好光电控制技术（上海）有限公司 | Containing the electromagnetic spool device of energy storage shutdown valve module |
| CN104676066A (en) * | 2013-11-29 | 2015-06-03 | 济南冶金化工设备有限公司 | Power-off driving device for gas cut-off valve |
| CN104633238A (en) * | 2015-03-01 | 2015-05-20 | 宁波市镇海华泰电器厂 | Electricity-saving alternating-current electromagnetic valve with triode-type switch pulse generating circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100529493C (en) | 2009-08-19 |
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| C14 | Grant of patent or utility model | ||
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Owner name: OAKO TECHNOLOGY (SHANGHAI) CO., LTD. Free format text: FORMER NAME: OUHAO PHOTOELECTRIC CONTROL TECHNIQUE(SHANGHAI ) CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201821 Yecheng Road, Shanghai, No. 1288, No. Patentee after: Good photoelectric control technology (Shanghai) Limited by Share Ltd Address before: 201821 No. 4, building 1055, Fu Hai Road, 2, Shanghai, Jiading District Patentee before: Oako Technology (Shanghai) Co., Ltd. |