CN1497203A - Break valve and break valve assembly with the break valve - Google Patents
Break valve and break valve assembly with the break valve Download PDFInfo
- Publication number
- CN1497203A CN1497203A CNA031595944A CN03159594A CN1497203A CN 1497203 A CN1497203 A CN 1497203A CN A031595944 A CNA031595944 A CN A031595944A CN 03159594 A CN03159594 A CN 03159594A CN 1497203 A CN1497203 A CN 1497203A
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- Prior art keywords
- valve
- valve body
- cutout
- shaft
- rotary drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
To obtain sufficient hermeticity when closing a valve by smoothly activating a valve element even if a diameter of a valve element is increased. The cut-off valve is composed of a guide 48 in which a valve shaft 45 having a bypass passage 46 is provided for linear movement, a main spring 49 for urging a valve body 43 a stepping motor 55 arranged opposite to the valve body 43 in the downstream of a valve seat 42, a feeder screw 60, a moving body 61 capable of pushing the valve element 43, and a rod 64 for regulating the rotation of the moving body 61. With this configuration, the moment by a mass of the valve element 43 is not applied on the stepping motor 55 which leads to smooth rotation of a rotor 52. A clearance between the valve shaft 45 and the guide 48 is small to set tilting of the valve element 43 small, whereby sufficient air-tightness when closing the valve can be obtained.
Description
Technical field
The present invention relates to a kind of cutout valve that is used to cut off combustion gas, gas accidents is prevented trouble before it happens and the assembly that this cutout valve is housed.
Background technique
The structure of existing this cutout valve (documents Japanese patent gazette spy for example of the present invention opens the cutout valve shown in flat 11-2352 number) as shown in Figure 5, cup-shaped valve casing 6 with band Ngok portion, stator 4 is equipped with in the outside of this valve casing 6, is embedded with the external bushing 3 that synthetic resin is made in the opening portion of described valve casing 6.This external bushing 3 is provided with the columnar member 5 that forms one with it, and columnar member 5 is in eccentric position and forwards outstanding.Neck bush 12 inserts in the valve casing 6, is provided with screw guide rod 17 in external bushing 3 and the neck bush 12, and the convex thread part 17a that is located at screw guide rod 17 front portions can rotate freely at positive and negative direction under the state forwards outstanding from above-mentioned lining 3.In addition, screw guide rod 17 is provided with the rotor 16 with described stator 4 subtends, is fitted with the rolling bearing 18 that is used to produce thrust power between this rotor 16 and described external bushing 3.Valve body 25 is configured to cooperate the while to carry out thread screw with convex thread part 17a with columnar member 5 and cooperates.Elastic sealing element 8, external bushing 3 and valve casing 6 are clamped by flange 2 peaceful plate flanges 7 with the level, and flange 2 peaceful plate flanges 7 with the level are fixed in the riveted joint mode by riveting parts 32.In addition, clamp by flange 2 with the level and housing 27, make between flange 2 with the level and the housing 27 and maintain the gas seal state from riveting parts 32 elastic sealing element 33 in the outer part.In general gas meter, the screw guide rod 17 of this cutout valve is configured to substantially horizontal.
The following describes the operational circumstances of cutout valve with said structure.
Occur under the situation such as unusual in the combustion gas user mode, rotor 16 gets from not shown control unit, taking place just changes, screw guide rod 17 is also to postive direction rotation, and columnar member 5 stops valve bodies 25 to rotate, with the rotation transformation motion that is in line, valve body 25 advances from screw guide rod 17 1 side direction valve seats 26 1 sides, withstand valve seat 26, the fluid pathway is stopped up, thereby cut off fluid.In addition, from such recovering state the time, externally under Shu Ru the effect degree of making screw guide rod 17 to opposite spin, the columnar member 5 same rotations that stop valve body 25, make the rotation transformation motion that is in line, valve body 25 is moved back towards screw guide rod 17 1 rear flank from valve seat 26 1 sides, push up external bushing 3 up to the end of valve body 25, make the fluid pathway open, thereby restart to supply with fluid.
In recent years, only the convenience that the electric energy that provides by the battery that is contained in the microcomputer gas table just can realize that combustion gas is opened circuit and combustion gas recovers and the maintaining valve closed condition does not have a cutout valve of energy requirement is yet widely approved, and quilt waits in expectation in the gas meter of the bigger flow that installs to industrial table etc.
In the gas meter of big flow, the pressure loss when flowing through in order to reduce big flow, the distance (stroke of valve) of valve body and valve seat must be set very greatly when seat diameter (being the valve body external diameter) and opening of valves.
But in above-mentioned existing cutout valve, 25 of valve bodies are supported on the convex thread part 17a of screw guide rod 17, when the external diameter of valve body 25 is very big, the eccentric momentum that its quality produces the concentrated area is added to and convex thread part 17a between mating part on.Like this, the frictional force of very big obstruction rotor 16 rotations will be formed.In addition in order to cooperate smoothly, valve body 25 and support between its convex thread part 17a of screw guide rod 17 and need to stay certain tolerance, this tolerance can cause valve body 25 to tilt, and the differential seat angle between the valve seat 26 can become greatly, does not close tightness thereby might reach sufficient valve.
Summary of the invention
The present invention finishes at the problems referred to above in the existing technology, its purpose be to provide a kind of for corresponding with big flow and do not hinder under the occasion that valve diameter is strengthened yet rotor rotation, have the cutout valve that also can save power when sufficient valve cuts out tightness and operation.
In order to address the above problem, the present invention includes: be located at the valve seat in the combustion gas stream; Be arranged on the upstream, can stop up the valve body that valve seat is stated in the residence; Be arranged on the valve shaft on the described valve body, described valve shaft be provided be used to guarantee and described valve body between bypass flow path thinner part and can stop up the residence and state bypass flow path and the part thicker than valve body mounting hole; Make the guide of described valve shaft moving linearly; Described valve body is applied the main spring of elastic force to valve seat one side; Described valve shaft is applied the auxiliary spring of elastic force to the direction of stopping up described bypass flow path; The rotary drive mechanism that subtend is provided with in described valve seat downstream and described valve body; Be located at the delivery device on the output shaft of described rotary drive mechanism; Its center hole can carry out that thread screw cooperates with described delivery device or the cooperation of other form, can promote the moving body of described valve body; With the anti-locking mechanism of the rotation of the rotation that limits described moving body.
Adopt the words of such scheme, because valve body is supported by valve shaft and guide, the eccentric momentum that the quality of valve body produces can not be added on the rotary drive mechanism, even have the feature that yet can not hinder the rotation of rotary drive mechanism under the occasion that has strengthened valve diameter in order to flow through big flow.Under the driving of the output shaft of the rotary drive mechanism that is provided with the valve shaft subtend, at first valve shaft is pushed away valve body, open bypass flow path, reduce the pressure at the back side, so only just can open valve body, the recovery stream with energy seldom.Simultaneously, owing to can only carry out linear slide between valve shaft and the guide, the tolerance between valve shaft and the guide can be set than little under the occasion that adopts delivery devices such as screw guide rod.Its result, the inclination of valve body can reduce, and closes tightness even also can reach sufficient valve under the occasion that has strengthened valve diameter in order to flow through big flow.
Cutout valve of the present invention comprises: be located at the valve seat in the combustion gas stream; Be arranged on the upstream, can stop up the valve body that valve seat is stated in the residence; Be arranged on the valve shaft on the described valve body; Described valve shaft be provided be used to guarantee and affiliated valve body between bypass flow path thinner part and can stop up the residence and state bypass flow path and the part thicker than valve body mounting hole; Make the guide of described valve shaft moving linearly; Described valve body is applied the main spring of elastic force to valve seat one side; Described valve shaft is applied the auxiliary spring of elastic force to the direction of stopping up described bypass flow path; The rotary drive mechanism that subtend is provided with in described valve seat downstream and described valve body; Be located at the delivery device on the output shaft of described rotary drive mechanism; Its center hole can carry out that thread screw cooperates with described delivery device or the cooperation of other form, can promote the moving body of described valve body; With the anti-locking mechanism of the rotation of the rotation that limits described moving body.
Like this, because valve body is supported by valve shaft and guide, the eccentric momentum that the quality of valve body produces can not be added on the rotary drive mechanism, even have the feature that does not yet hinder the rotation of rotary drive mechanism under the situation that has strengthened valve diameter in order to flow through big flow.
In addition, because valve shaft and guide only carry out linear slide, the tolerance between valve shaft and the guide is than little under the occasion that adopts delivery devices such as screw guide rod.Its result, the inclination of valve body can reduce, and also can reach sufficient valve and closes tightness even strengthened the words of valve diameter in order to flow through big flow.
In addition, another kind of cutout valve of the present invention is also increasing the self-maintenance o that an end opposite with valve body on valve shaft is provided with on the said structure.
So, rotary drive mechanism only carries out the opening of valves action, after keeping having attracted with self-maintenance o, when cutting out, the moving body valve of rotary drive mechanism one side retreats into the position of not withstanding valve body, the attraction of valve closing motion by removing self-maintenance o, the elastic force that relies on spring to apply move valve body and finish, like this, even under the needs emergency valve such as cuts out at occasion, also can at a high speed, stably carry out the valve closing motion.
In addition, cutout valve of the present invention is on the basis of above-mentioned formation, and rotary drive mechanism has adopted stepper motor.
Like this, the holding torque of dependence stepper motor is energy maintaining valve opening state just, thereby cutout valve simple in structure, with low cost can be provided.
In addition, cutout valve assembly of the present invention forms the cutout valve with above-mentioned formation of packing on the part of the combustion gas stream that contains valve seat.
Like this, when making gas meter, the cutout valve assembly that only needs to pack in the part of stream just can increase the cutout valve function, can simplify manufacture process, simultaneously the cutout valve assembly be owing to can carry out functional check under the single-piece state, thereby stay-in-grade cutout valve can be provided.
Description of drawings
Sectional view when Fig. 1 is in closed condition for the cutout valve in the embodiment of the invention 1.
Sectional view when Fig. 2 is in opening state for the by-passing part of this cutout valve.
Sectional view when Fig. 3 is in opening state for this cutout valve.
Sectional view when Fig. 4 is in opening state for the cutout valve in the embodiment of the invention 2.
Sectional view when Fig. 5 is in opening state for existing cutout valve.
In the superincumbent accompanying drawing, 41 is that fuel gas path valve seat valve body 42 is valve seat; 43 is that valve body 45,71 is that valve shaft 48,72 is that guide 49 is main spring; 55 is stepper motor (rotary drive mechanism); 59 is output shaft; 60 for pushing screw mandrel (delivery device); 61 is moving body; 64 is bar (the anti-locking mechanism of rotation); 78 is self-maintenance o.
Embodiment
Embodiments of the invention are described with reference to the accompanying drawings.
(embodiment 1)
Sectional view when Fig. 1 is in closed condition for the cutout valve in the embodiment of the invention 1, the sectional view when Fig. 2 is in opening state for bypass flow path, Fig. 3 are the sectional view when being in the opening of valves state.
Fig. 1, cutout valve shown in 2 comprises with lower member: be located at combustion gas and flow to valve seat 42 the combustion gas stream 41 that 41b of lower-left from upper right inlet 41a, be located at the upstream and valve seat 42 can be stopped up the valve body 43 of living, be provided with valve shaft 45 than thin part 45a of valve body mounting hole 44 and the part 45b thicker than valve body fetching hole, when zero load, valve shaft 45 is pushed to the auxiliary spring 47 of valve body 43, make the guide 48 of valve shaft 45 moving linearlies, to the main spring 49 of valve body 43 towards valve seat 42 1 side applied thrusts, be positioned at valve seat 42 downstreams and with rotary drive mechanism that valve body 43 subtends ground is provided be stepper motor 55, the delivery device that is located on the output shaft 59 of stepper motor 55 promptly pushes screw mandrel 60, its center hole with push that screw mandrel 60 can carry out that thread screw cooperates or the cooperation of other form, can promote the moving body 61 of valve body 43, and the anti-locking mechanism of rotation that limits the rotation of this moving body 61 is a bar 64.
Rotary drive mechanism is stepper motor 55 by the rotor 52 that permanent magnet 51 is housed, is constituted with the stator 53 of rotor 52 subtend settings and the coil 54 that is located at stator 53 inside.Be provided with the next door 56 of making between rotor 52 and the stator 53, seal by 57 pairs of combustion gas of sealed member between next door 56 and the flange 67, prevent that combustion gas from flowing to the outside by the nonmagnetic metal such as stainless steel of austenite series.The output shaft 59 of rotor 52 is supported in rotation mode freely by the bearing 58 and the cover plate 63 that are fixed on the next door 56.Delivery device promptly push screw mandrel 60 cut by a end output shaft 59 or change make processing form.The anti-locking mechanism of rotation is that bar 64 forms an integral body with cover plate 63.Moving body 61 is made by synthetic resin, is provided with recessed screw thread in its center hole, periphery is provided with auxiliary section 69, with push screw mandrel 60 and carrying out also cooperating when thread screw cooperates with bar 64, valve body 43 can be withstood in the pushing part 62 that is located at the one end; When opening of valves, as shown in fig. 1, between pushing part 62 and valve body 43 can in form plurality of gaps.The material of moving body 61 preferably adopts anti-shear deformation performances such as vulcanizing polyphenyl than higher material.In addition, be provided with flange 41c, the 41d that can be connected respectively at inlet 41a, the outlet 41b place of fuel gas path 41 with the fuel gas path of gas meter.
The following describes the operational circumstances and the effect of the cutout valve described in the embodiment 1.Under the valve closed condition shown in Fig. 1, moving body 61 retreats into the position of withstanding cover plate 63, will form the gap with valve body 43.Like this, valve body 43 withstands valve seat 42 under the elastic force effect of main spring 49, the valve closed condition that keeps combustion gas not flow.Because the tolerance between valve shaft 45 and the guide 48 is very small, has only about 1/100 of diameter, the inclination of valve body 43 also will be very little, and owing to the thrust that also is subjected to from the equilibrium of main spring 49, immediately for corresponding with big flow and strengthen under the occasion of diameter of valve body 43, also can obtain sufficient valve and close tightness.
When the control section of microcomputer gas table can recovery operation from having removed from the signal determining danger of various sensors, when the combustion gas user gets rid of hazardous condition the back operation and is located at recovery switch on gas meter and the remote panel and gas company etc. send remote control by communication agency and recover under the occasion such as order, the control section (not shown) of microcomputer gas table adds the pulse type electric current with phase difference on coil 53, make rotor 52 rotations.So, the moving body 61 that pushed screw mandrel 60 pushes out withstands it to valve body 43 1 side shiftings, makes valve body 43 break away from valve seat 42, moves to the valve opening position shown in Fig. 3.Like this, combustion gas just can be circulated.
Here, owing to moving body 61 very light in weight, form respectively again with valve body 43, the eccentric momentum that quality produced of valve body 43 can not affact on the mating part that pushes screw mandrel 60, and therefore, rotor 52 can rotatablely move smoothly.Like this, even under the occasion with the enlarged diameter of valve body 43, also has the feature that does not hinder stepper motor 55 rotations in order to flow through big flow.
In addition, when the signal that does not have unusually, sends here from various sensors when the user mode of combustion gas is not indicated dangerous situation, to not have electric current to send from the control section of microcomputer gas table, stepper motor 55 remains on the state that rotor 52 does not rotate under the effect of holding torque.Like this, valve body 43 will remain on the opening of valves state shown in Fig. 3, and combustion gas can be circulated.When the user mode of combustion gas takes place unusual or when the signal of various sensors indicates hazardous condition; the control section of microcomputer gas table is applied to the pulse type electric current with phase difference on coil 54; make rotor 52 rotations, moving body 61 moves back to cover plate 63 1 rear flank.Then, valve body 43 withstands valve seat 42 under the elastic force effect of main spring 49, becomes the valve closed condition that combustion gas as shown in fig. 1 can not be flowed.
At this moment, because the tolerance between valve shaft 45 and the guide 48 is very small, the inclination of valve body 43 is very little, and phenomenons such as stuck can not take place between the guide 48, can move to valve closed position place swimmingly, can carry out reliable opening of valves.This cutout valve assembly that contains fuel gas path 41 can directly be installed in the fuel gas path of gas meter by the service check that cutout valve manufacturer carried out operation and air tightness test etc. in advance.Therefore, the invention provides the cutout valve that a kind of not only manufacture process can be simplified, quality also can be stable simultaneously.
Like this, the cutout valve in the embodiment of the invention 1 is by constituting with lower member: be located at the valve seat 42 in the combustion gas stream 41, be located at the upstream and valve body 43 that valve seat 42 obstructions can be lived, be located at the valve shaft 45 on the valve body 43, make the guide 48 of valve shaft 45 moving linearlies, to the main spring 49 of valve body 43 to valve seat 42 1 side applied thrusts, be located at valve seat 42 downstreams and with the rotary drive mechanism of valve body 43 subtends configurations be stepper motor 55, the delivery device that is arranged on the output shaft 59 of stepper motor 55 promptly pushes screw mandrel 60, its center hole can with push screw mandrel 60 and carry out that thread screw cooperates or the cooperation of other form, can promote the moving body 61 of valve body 43, the anti-locking mechanism of rotation that limits the rotation of this moving body 61 is that bar 64 constitutes.Because valve body 43 is maintained by valve shaft 45 and guide 48, it is on the stepper motor 55 that the eccentric momentum that is caused by the quality of valve body 43 can not be added to rotary drive mechanism, even like this in order to flow through in the big flow and strengthened under the occasion of diameter of valve body 43, also has the feature that the rotation of the rotor 52 of rotary drive mechanism also can not be hindered.
In addition, owing to can only carry out linear slide between valve shaft 45 and the guide 48, the tolerance between valve shaft 45 and the guide 48 can be arranged under the occasion than delivery devices such as screw guide rods little.Its result, the inclination of valve body 43 can reduce, even in order to flow through in the big flow and strengthened valve body 43 diameter under the occasion, also can reach sufficient valve and close tightness.
In addition, because rotary drive mechanism is stepper motor 55, the holding torque of stepper motor 55 can maintain the opening of valves state, therefore can provide simply, cutout valve cheaply.In addition, because the cutout valve assembly is to form containing the cutout valve with above-mentioned formation of packing on one section combustion gas stream 41 of valve seat 42, when making gas meter, only need on the part stream, to pack into the cutout valve assembly, just can increase the cutout valve function, manufacture process can be simplified, simultaneously the cutout valve assembly be owing to can carry out functional check under the single-piece state, thereby stay-in-grade cutout valve can be provided.
In addition, in the superincumbent explanation, valve seat 42 is welded in the combustion gas stream 41, but also can carry out machining to the part of combustion gas stream 41 forms, guide 48 also can be processed into the part of flange 64, and surface treatment also can be carried out in valve shaft 45 1 sides.Push mechanism 62 can be the parts different with moving body 61, and in addition, delivery device can not be to push screw mandrel 60, uses cam mechanism also to be fine.
In addition, in the superincumbent explanation, though rotary drive mechanism is a stepper motor 55, when so long as the stronger rotary drive mechanism of holding torques such as geared dynamo is just passable.But, consider the Economy of product, stepper motor is optimal selection.
(embodiment 2)
Sectional view when Fig. 4 is in opening state for the cutout valve of the embodiment of the invention 2.Be with embodiment 1 difference, on an end opposite on the valve shaft 71, be provided with self-maintenance o 78 with valve body 43.Among the figure, the outside of valve shaft 71 is provided with guide 72, and the outside of guide 72 is provided with coil 75, and the end of valve shaft 71 is provided with the secured core 74 that it can be withstood.Permanent magnet 73 and bar 76,77 and valve shaft 71 constitute the magnetism loop, form self-maintenance o 78.Valve shaft 71 is made by magnetic materials such as electromagnetism stainless steels.Guide 72 is made by nonmagnetic metal such as austenite series stainless steels.Oneself's maintenance o 78 is fixed on the fuel gas path 41 at flange 81 places across sealed member 66.Between guide 72 and the flange 81, be respectively equipped with sealed member 79,80 between guide 72 and the secured core 74, gas sealing is lived, prevent that it from flowing to the outside.In addition, indicate with embodiment's 1 same-sign for identical component parts, omit explanation at this to them.
The operational circumstances and the effect of embodiment 2 cutout valve are described below.Under the opening of valves state shown in Fig. 4, all do not add the motor signal on self-maintenance o 78 and the stepper motor 55.Valve shaft 71 withstands secured core 74, is keeping by the sorption state under the flux effect of permanent magnet 73, and valve body 43 is keeping the opening of valves state away from valve seat 42.Moving body 61 retreats into the position of withstanding cover plate 63, and is between the valve body 43 under the valve closed position and has certain clearance.
The user mode of combustion gas occurs unusual or when the signal that various sensors are sent here indicates dangerous state to take place; the control section of microcomputer gas table is applied with the pulse type electric current in the coil 75 of self-maintenance o 78, produce the electromagnetic force opposite with the flux direction of permanent magnet 73.Its result, the attraction force between valve shaft 71 and the secured core 74 is cancelled.Under the elastic force effect of main spring 49, valve shaft 71 breaks away from secured cores 74, and valve body 43 is to valve seat 42 1 side shiftings, and withstands with it, and fuel gas path 41 is closed.
This moment, the pulse type electric current that applied can be the rectangular wave of 50ms degree, owing to just can finish the valve closing motion at short notice, so energy high speed under the occasion such as close, stably carry out the valve closing motion at the needs emergency valve.Under the valve closed condition, moving body 61 retreats into the position of withstanding cover plate 63, and and valve body 43 between produce the gap.Like this, valve body 43 withstands valve seat 42 under the elastic force effect of main spring 49, maintains the valve closed condition that combustion gas can not be flowed.
When the control section of microcomputer gas table can recovery operation from having removed from the signal determining danger of various sensors, when the combustion gas user gets rid of hazardous condition the back operation and is located at recovery switch on gas meter and the remote panel and gas company etc. send remote control by communication agency and recover under the occasion such as order, the control section of microcomputer gas table adds the pulse type electric current with phase difference on coil 53, make rotor 52 rotations.So, the moving body 61 that pushed screw mandrel 60 pushes out withstands it to valve body 43 1 side shiftings, makes valve body 43 break away from valve seat 42, moves to the position of withstanding secured core 74.Then, valve shaft 71 is attracted by the flux of permanent magnet 73, maintains the state that the iron core 74 that is fixed holds.Like this, combustion gas just can be circulated.
Afterwards, the control section of microcomputer gas table is applied with the pulse type electric current with opposite phase difference on the coil 53 of stepper motor 55, make rotor 52 counterrotatings.So, the moving body 61 that pushed screw mandrel 60 promotes moves to the direction from opening of valves body 43, retreats into the position of withstanding cover plate 63 and just stops.Like this, just become the opening of valves state shown in Fig. 3.
As mentioned above, in the cutout valve of the embodiment of the invention 2 since on valve shaft 71 end opposite with valve body 43 disposed self-maintenance o 78, just the valve closing motion can be finished at short notice, under occasions such as needs emergency cut-off, also the valve closing motion can be at a high speed, stably carried out.In addition, promptly be under the occasion of the diameter that has strengthened valve body 43 in order to flow through big flow, the eccentric momentum that valve body 43 produces also can be supported by guide 72, and the thrust of main spring 49 only need suitably be set, and just can reach sufficient valve and close tightness.
In addition, though show the situation of permanent magnet 73 between secured core 74 and bar 76 among Fig. 3, be arranged between bar 76 and the bar 77 and also be fine.In addition, in the superincumbent explanation, valve shaft 71 has played the effect of movable core, but movable core is a separate part and valve shaft is chimeric also is fine.
Adopt aforesaid words of the present invention, can reach following effect.
Because valve body is supported by valve shaft and guide, the eccentric momentum that the quality of valve body produces can not be added on the rotary drive mechanism, even have the feature that yet can not hinder the rotation of rotary drive mechanism under the occasion that has strengthened valve diameter in order to flow through big flow.Under the driving of the output shaft of the rotary drive mechanism that is provided with the valve shaft subtend, at first valve shaft is pushed away valve body, open bypass flow path, reduce the pressure at the back side, so only just can beat the opening of valves body, the recovery stream with energy seldom.Simultaneously, because valve shaft and guide can only carry out linear slide, the tolerance between valve shaft and the guide can be set than little under the occasion that adopts delivery devices such as screw guide rod.Its result, the inclination of valve body can reduce, and promptly is that the words that strengthened valve diameter in order to flow through big flow also can reach sufficient valve and close tightness.
In addition, on above-mentioned cutout valve structure of the present invention, self-maintenance o on increasing again on the end opposite on the valve shaft with valve body, rotary drive mechanism only carries out the opening of valves action, after keeping holding with self-maintenance o, the position of not withstanding valve body when making the moving body of rotary drive mechanism one side retreat into valve to close, the valve closing motion is by removing the attraction of self-maintenance o, the elastic force that relies on spring to apply moves valve body to carry out, also can be at a high speed under the occasion even close etc. at the needs emergency valve, stably carry out the valve closing motion.
In addition, owing to can rely on the holding torque of stepper motor to maintain the opening of valves state, thus cutout valve simple in structure, with low cost can be provided.
In addition, the cutout valve assembly that only needs to pack in the part at stream when making gas meter just can increase the cutout valve function, manufacture process can be simplified, and the cutout valve assembly can carry out functional check under the single-piece state simultaneously, and stay-in-grade cutout valve can be provided.
Claims (4)
1. cutout valve is characterized in that comprising:
Be located at the valve seat in the combustion gas stream;
Be arranged on the upstream, can stop up the valve body that valve seat is stated in the residence;
Be arranged on the valve shaft on the described valve body; Described valve shaft be provided be used to guarantee and affiliated valve body between bypass flow path thinner part and can stop up the residence and state bypass flow path and the part thicker than valve body mounting hole;
Make the guide of described valve shaft moving linearly;
Described valve body is applied the main spring of elastic force to valve seat one side; With the auxiliary spring that described valve shaft is applied elastic force to the direction of stopping up described bypass flow path;
The rotary drive mechanism that subtend is provided with in described valve seat downstream and described valve body;
Be located at the delivery device on the output shaft of described rotary drive mechanism;
Its center hole can carry out that thread screw cooperates with described delivery device or other forms of cooperation, can promote the moving body of described valve body; With
Limit the anti-locking mechanism of rotation of the rotation of described moving body.
2. cutout valve as claimed in claim 1 is characterized in that: an end opposite with valve body is provided with self-maintenance o on the valve shaft.
3. cutout valve as claimed in claim 1 is characterized in that: rotary drive mechanism is a stepper motor.
4. cutout valve assembly is characterized in that: contain the cutout valve of integrally having packed on the part of combustion gas stream of valve seat described in claim 1,2 or 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002292188A JP2004125113A (en) | 2002-10-04 | 2002-10-04 | Cut-off valve and cut-off valve block incorporating the same |
| JP2002292188 | 2002-10-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1497203A true CN1497203A (en) | 2004-05-19 |
| CN100346099C CN100346099C (en) | 2007-10-31 |
Family
ID=32283525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031595944A Expired - Fee Related CN100346099C (en) | 2002-10-04 | 2003-09-29 | Break valve and break valve assembly with the break valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2004125113A (en) |
| KR (1) | KR100990007B1 (en) |
| CN (1) | CN100346099C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459976A (en) * | 2009-06-08 | 2012-05-16 | 松下电器产业株式会社 | Shutoff valve unit |
| CN101849127B (en) * | 2007-10-02 | 2012-06-06 | Skf公司 | A valve actuator |
| CN103384788A (en) * | 2011-02-09 | 2013-11-06 | 松下电器产业株式会社 | Shutoff valve device |
| CN113883415A (en) * | 2021-09-16 | 2022-01-04 | 杨春顺 | Automatic gas circuit breaker |
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| KR100703178B1 (en) * | 2005-01-20 | 2007-04-05 | 이규동 | Gas flow control equipment and method for gas range |
| US7441564B2 (en) * | 2005-06-06 | 2008-10-28 | Tescom Corporation | Gas cylinder valve assembly |
| KR100595018B1 (en) * | 2005-11-18 | 2006-06-30 | 신우공업 주식회사 | Complex control valve body for a fluid control valve |
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| JP6518713B2 (en) * | 2017-04-12 | 2019-05-22 | 株式会社不二工機 | Motorized valve |
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| US11204104B2 (en) * | 2019-05-16 | 2021-12-21 | Tapcoenpro, Llc | Systems and methods for torque isolation valve actuator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6412352A (en) * | 1987-07-06 | 1989-01-17 | Brother Ind Ltd | Document processor |
| JP2787734B2 (en) * | 1990-12-29 | 1998-08-20 | 小熊機械株式会社 | Automatic valve |
| DE19516054A1 (en) * | 1994-05-11 | 1995-11-16 | Kromschroeder Ag G | Controllable valve with stepping motor movable by electromagnet |
| JPH09196370A (en) * | 1996-01-23 | 1997-07-29 | Alps Electric Co Ltd | Gas valve shut-off device |
| US5984260A (en) * | 1996-10-15 | 1999-11-16 | Baker Hughes Incorporated | Electrically driven actuator with failsafe feature |
| KR100544717B1 (en) * | 1999-01-22 | 2006-01-24 | 삼성전자주식회사 | Electronic expantion valve for refrigerating cycle |
| JP4214599B2 (en) | 1999-02-12 | 2009-01-28 | パナソニック株式会社 | Shut-off valve |
| JP3522681B2 (en) * | 2000-02-02 | 2004-04-26 | 株式会社キッツエスシーティー | Flow control valve |
| DE10051849C1 (en) * | 2000-10-19 | 2001-10-18 | Jci Regelungstechnik Gmbh | Gas safety check valve has adjusting drive with servo motor for continuously variable or discrete adjustment of stop element connected to circuit controlling gas throughput |
| JP4997662B2 (en) | 2000-11-15 | 2012-08-08 | パナソニック株式会社 | Shut-off valve |
-
2002
- 2002-10-04 JP JP2002292188A patent/JP2004125113A/en active Pending
-
2003
- 2003-09-29 CN CNB031595944A patent/CN100346099C/en not_active Expired - Fee Related
- 2003-10-02 KR KR1020030068634A patent/KR100990007B1/en not_active IP Right Cessation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101849127B (en) * | 2007-10-02 | 2012-06-06 | Skf公司 | A valve actuator |
| CN102459976A (en) * | 2009-06-08 | 2012-05-16 | 松下电器产业株式会社 | Shutoff valve unit |
| CN102459976B (en) * | 2009-06-08 | 2013-06-19 | 松下电器产业株式会社 | Shutoff valve unit |
| CN103384788A (en) * | 2011-02-09 | 2013-11-06 | 松下电器产业株式会社 | Shutoff valve device |
| US9528624B2 (en) | 2011-02-09 | 2016-12-27 | Panasonic Intellectual Property Management Co., Ltd. | Shutoff valve device |
| CN113883415A (en) * | 2021-09-16 | 2022-01-04 | 杨春顺 | Automatic gas circuit breaker |
| CN113883415B (en) * | 2021-09-16 | 2024-02-20 | 杨春顺 | Automatic gas circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040031615A (en) | 2004-04-13 |
| KR100990007B1 (en) | 2010-10-26 |
| JP2004125113A (en) | 2004-04-22 |
| CN100346099C (en) | 2007-10-31 |
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