CN203374892U - Double-guarantee fluid stop valve - Google Patents
Double-guarantee fluid stop valve Download PDFInfo
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- CN203374892U CN203374892U CN201320416755.0U CN201320416755U CN203374892U CN 203374892 U CN203374892 U CN 203374892U CN 201320416755 U CN201320416755 U CN 201320416755U CN 203374892 U CN203374892 U CN 203374892U
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- valve
- cutting
- dual fail
- pneumatic actuator
- rod
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Abstract
The utility model discloses a double-guarantee fluid stop valve which comprises two stop valves which are connected in series. The two stop valves are the first stop valve and the second stop valve. Each stop valve comprises a valve body, a valve plate component, a valve rod, a pneumatic actuation mechanism, a pneumatic control mechanism, a position induction device and a signal feedback device. A medium channel is arranged in each valve body and each valve plate component is arranged in one valve body. One end of each valve rod is connected with one valve plate component and the other end of each valve rod is connected with one pneumatic actuation mechanism. Each pneumatic control mechanism is connected with one pneumatic actuation mechanism so that the pneumatic actuation mechanism is controlled to conduct set motion. Each position induction device is used for obtaining the position of one valve rod so that the opening state and the closing state of each stop valve can be obtained. Obtained data are sent to each signal feedback device through one position induction device and the obtained data are sent to a main control computer through each signal feedback device, wherein the main control computer controls motion of the stop valves. The double-guarantee fluid stop valve is provided with the two or more stop valves, so that the safety of the double-guarantee fluid stop valve is improved.
Description
Technical field
The utility model belongs to mechanical equipment technical field, relates to a kind of cut-off valve, relates in particular to a kind of dual fail-safe fluid cut-off valve.
Background technique
Valve is the controlling component in fluid delivery system, has cut-off, adjusting, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.For the valve of liquid control system, from the simplest stop valve to very complicated robot control system(RCS) various valves used, its kind and specification are quite various.Valve can be used for controlling flowing of all kinds fluids such as air, water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium.
Existing valve usually separately arranges, and a valve only has a valve body, only is provided with a valve plate mechanism in valve body, the switch of the positioning control valve by controlling valve plate mechanism.Yet the harmfulness of some hazardous fluids (as fluids such as coal gas, rock gas, toxic gas, harmful liquids) is larger, if a valve only is set, if this valve damages, easily cause larger harm, Security is poor.In addition, a valve only being set also can't be controlled the fluid flowed out as required.
In view of this, nowadays in the urgent need to designing a kind of new fluid cut-off valve, in order to overcome the defect that has single valve mechanism now.
The model utility content
Technical problem to be solved in the utility model is: provide a kind of dual fail-safe fluid cut-off valve, the Security that can improve valve.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of dual fail-safe fluid cut-off valve, described cut-off valve comprises two cutting-off valves of series connection, i.e. the first cutting-off valve, the second cutting-off valve, the valve body of described the first cutting-off valve, the second cutting-off valve is fixedly connected with by bindiny mechanism;
Described cutting-off valve comprises valve body, plate member, valve rod, pneumatic actuator, pneumatic control mechanism, position induction device, signal feedback device;
Be provided with medium channel in described valve body, plate member is located in valve body; One end connection valve plate member of described valve rod, the other end connects pneumatic actuator;
Described pneumatic control mechanism connects pneumatic actuator, controls pneumatic actuator and carries out the setting action;
Described position induction device, in order to obtain the position of valve rod, obtains the on off state of cutting-off valve with this;
Described position induction device is sent to signal feedback device by the data of obtaining, and signal feedback device is sent to the data of obtaining the principal controller of controlling the cutting-off valve action.
As a kind of preferred version of the present utility model, the joint of described valve rod and pneumatic actuator is provided with the stuffing box parts.
As a kind of preferred version of the present utility model, described stuffing box parts comprise some O type circles.
As a kind of preferred version of the present utility model, described pneumatic actuator comprises cylinder, piston, spring, position limit switch, also is provided with connecting rod on piston, and described position induction device is in order to obtain the position of connecting rod, thereby obtains the position of valve rod;
Described position limit switch starts during to maximum position or valve closing at valve opening, and signal is sent to principal controller.
As a kind of preferred version of the present utility model, described pneumatic control mechanism comprises solenoid valve.
As a kind of preferred version of the present utility model, the joint of described the first cutting-off valve, the second cutting-off valve is provided with flow transducer, temperature transducer, pressure transducer.
The beneficial effects of the utility model are: the dual fail-safe fluid cut-off valve the utility model proposes, be provided with two or more cutting-off valves, and can improve the Security of valve.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model dual fail-safe fluid cut-off valve.
The composition schematic diagram that Fig. 2 is the utility model dual fail-safe fluid cut-off valve control system.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment one
Refer to Fig. 1, Fig. 2, the utility model has disclosed a kind of dual fail-safe fluid cut-off valve, and dual fail-safe fluid cut-off valve comprises two cutting-off valves, i.e. the first cutting-off valve 10, the second cutting-off valve 20; The valve body of described the first cutting-off valve 10, the second cutting-off valve 20 is fixedly connected with by bindiny mechanism, the utlity model has the function of dual fail-safe.
As shown in Figure 2, the utility model also discloses a kind of dual fail-safe fluid cut-off valve control system, and described system comprises: principal controller 100, the dual fail-safe fluid cut-off valve be connected with principal controller 100.Described principal controller 100 can also connect remote server by network; Described principal controller 100 can be computer.Control system is controlled the keying of two valves by advanced automation equipment, so have the function of dual fail-safe.
Described cutting-off valve (as the first cutting-off valve 10, the second cutting-off valve 20) comprises valve body 1, plate member 2, valve rod 3, stuffing box parts 4, pneumatic actuator 5, pneumatic control mechanism 6, position induction device 8, signal feedback device 7.Described valve body 1 comprises upper valve body, lower valve body, and valve rod 3 arranges described stuffing box parts 4 with the joint of upper valve body; Described stuffing box parts 4 comprise some O type circles; The setting of stuffing box parts 4 can improve the sealing of valve body.
Be provided with medium channel in described valve body 1, plate member 2 is located in valve body 1; One end connection valve plate member 2 of described valve rod 3, the other end connects pneumatic actuator 5; Described principal controller 100 connects pneumatic control mechanism 6, to pneumatic control mechanism 6, sends control command; Described pneumatic control mechanism 6 connects pneumatic actuator 5, controls pneumatic actuator 5 and carries out the setting action.
Described position induction device 8, in order to obtain the position of valve rod 3, obtains the on off state of cutting-off valve with this.Described position induction device 8 is sent to signal feedback device 7 by the data of obtaining, and signal feedback device 7 is sent to principal controller 100 by the data of obtaining.
Described pneumatic actuator 5 comprises cylinder, piston, spring, position limit switch, also is provided with connecting rod on piston, and described position induction device is in order to obtain the position of connecting rod, thereby obtains the position of valve rod; Described position limit switch starts during to maximum position or valve closing at valve opening, and signal is sent to principal controller 100.Described pneumatic control mechanism 6 comprises solenoid valve.
The joint of described the first cutting-off valve 10, the second cutting-off valve 20 can be provided with flow transducer, temperature transducer, pressure transducer.
Action principle of the present utility model is as follows: when for the first time, detect completely, when operating mode is normal, operating console (being principal controller) can be to start signal of the first cutting-off valve.After pneumatic control mechanism receives start signal, open solenoid valve, access pressurized air (0.3MPa～0.6MPa).Pressurized air, by solenoid valve, enters cylinder block, arrives the piston below.Piston is compressed the pressure of air, produces the thrust moved upward.When this thrust is greater than spring and imposes on the compressive force of piston and pressure that fed sheet of a media imposes on valve plate (frictional force is ignored), piston moves upward, and drives plate member and opens valve.Simultaneously, be arranged on the connecting rod of piston upper end with moving on piston, until strike the position limit switch preset, now valve has been opened to maximum position.Then, position limit switch flows to feedback signal of operating console, tells operating console, can repeat next opening program.In like manner, valve closing is exactly the inverse operation process of valve opening.
The utility model dual fail-safe fluid cut-off valve sealability is good.The sealing means of common valve is divided into hard sealing and soft seal.Hard sealing is the distortion that relies on metal surface, reaches sealing purpose.Its life-span is longer than the soft seal life-span, but does not reach the state of zero leakage.Soft seal is the distortion that relies on nonmetallic surface, reaches sealing purpose.Its life-span is shorter than hard sealing life, but can reach the state of zero leakage.
The special operation condition of dual fail-safe cut-off valve has determined that this valve not only will reach the state of zero leakage, and will be arranged longer working life, and working life is at (domestic common valve 6 months, external valve 12 months) more than 18 months.In order to meet so special working condition, Co., Ltd of Shanghai GM mechanical technique research institute has adopted new material, new process.
At first, sealing surface of valve plate adopts special vulcanized rubber.Sulfuration is that a certain amount of vulcanzing agent is added in rubber, a kind of course of working of heat tracing at the temperature of regulation.The advantages such as it can make the netted knot that is cross-linked with each other and sets up by generating " sulphur bridge " between the linear molecule of rubber, thereby the sizing material of plasticity is become, has elastomeric vulcanizate, has possessed intensity high simultaneously, and wear resistance is good.Secondly, filler and piston sealing element adopt bag fluorine rubber 0 shape circle.Rubber 0 shape circle is a kind of seal element with self-sealing function.At its outside one deck teflon that coats, because teflon has good wearability, so can greatly improve the working life of rubber 0 shape circle.Finally, the gasket seal of valve all adopts spiral wound gaskets, has improved greatly valve seal.
The utility model dual fail-safe fluid cut-off valve motor reaction is sensitive.From the working principle of dual fail-safe cut-off valve, once valve is received the instruction of operating console, to open rapidly or to close.The key element that control valve opens and closes is exactly a Compress Spring on piston.It has determined the sensitivity of valve opening and closing.If too soft, valve can not be closed rapidly, even can produce leakage; If too hard, valve can not be opened rapidly, even can cause underfed.The utility model, by reasonable material, accurate calculating, experiment repeatedly, has finally been succeeded in developing the special spring of the sensitive-type that meets working condition.
The utility model dual fail-safe fluid cut-off valve automaticity is high.The dual fail-safe cut-off valve is a kind of automatic valve with remote control function.If this valve is likened to a people, automatic control system is exactly his brain so.Brain receives outside signal and produces action, and valve is also the same.So our well-designed automatic control system, strictly select the Element of automatic control with international most advanced level, guaranteed validity and the Security of valve.
In sum, the dual fail-safe cutting-off valve the utility model proposes, be provided with two or more cutting-off valves, can improve the Security of valve.
Here description of the present utility model and application is illustrative, not wants by scope restriction of the present utility model in the above-described embodiments.Here disclosed embodiment's distortion and change is possible, and for those those of ordinary skill in the art, the various parts of embodiment's replacement and equivalence are known.Those skilled in the art are noted that in the situation that do not break away from spirit of the present utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realizes with other assembly, material and parts.In the situation that do not break away from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (5)
1. a dual fail-safe fluid cut-off valve, is characterized in that, described cut-off valve comprises two cutting-off valves of series connection, i.e. the first cutting-off valve, the second cutting-off valve, and the valve body of described the first cutting-off valve, the second cutting-off valve is fixedly connected with by bindiny mechanism;
Described cutting-off valve comprises valve body, plate member, valve rod, pneumatic actuator, pneumatic control mechanism, position induction device, signal feedback device;
Be provided with medium channel in described valve body, plate member is located in valve body; One end connection valve plate member of described valve rod, the other end connects pneumatic actuator;
Described pneumatic control mechanism connects pneumatic actuator, controls pneumatic actuator and carries out the setting action;
Described position induction device, in order to obtain the position of valve rod, obtains the on off state of cutting-off valve with this;
Described position induction device is sent to signal feedback device by the data of obtaining, and signal feedback device is sent to the data of obtaining the principal controller of controlling the cutting-off valve action.
2. dual fail-safe fluid cut-off valve according to claim 1 is characterized in that:
The joint of described valve rod and pneumatic actuator is provided with the stuffing box parts.
3. dual fail-safe fluid cut-off valve according to claim 2 is characterized in that:
Described stuffing box parts comprise some O type circles.
4. dual fail-safe fluid cut-off valve according to claim 1 is characterized in that:
Described pneumatic actuator comprises cylinder, piston, spring, position limit switch, also is provided with connecting rod on piston, and described position induction device is in order to obtain the position of connecting rod, thereby obtains the position of valve rod;
Described position limit switch starts during to maximum position or valve closing at valve opening, and signal is sent to principal controller.
5. dual fail-safe fluid cut-off valve according to claim 1 is characterized in that:
Described pneumatic control mechanism comprises solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416755.0U CN203374892U (en) | 2013-07-12 | 2013-07-12 | Double-guarantee fluid stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416755.0U CN203374892U (en) | 2013-07-12 | 2013-07-12 | Double-guarantee fluid stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374892U true CN203374892U (en) | 2014-01-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320416755.0U Expired - Lifetime CN203374892U (en) | 2013-07-12 | 2013-07-12 | Double-guarantee fluid stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374892U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194668A (en) * | 2018-02-28 | 2018-06-22 | 浙江杨舟机械有限公司 | A kind of vulcanizing machine thermal technology integrates valve group |
| CN109163133A (en) * | 2018-10-30 | 2019-01-08 | 郝守赞 | A kind of centralized control valve and its control method based on Internet of Things transfer function |
-
2013
- 2013-07-12 CN CN201320416755.0U patent/CN203374892U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194668A (en) * | 2018-02-28 | 2018-06-22 | 浙江杨舟机械有限公司 | A kind of vulcanizing machine thermal technology integrates valve group |
| CN109163133A (en) * | 2018-10-30 | 2019-01-08 | 郝守赞 | A kind of centralized control valve and its control method based on Internet of Things transfer function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220803 Address after: 200444 Shanghai city Baoshan District Industrial Park Baoshan City Fengxiang Road No. 1675 Patentee after: KAITAI VALVE Group Address before: 200444 third floor, complex building, No. 1919, Fengxiang Road, Baoshan District, Shanghai Patentee before: SHANGHAI RESEARCH INSTITUTE OF GENERAL MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |
|
| CX01 | Expiry of patent term |