CN104405908A - Valve core component of corrugated pipe type double-base sleeve valve - Google Patents
Valve core component of corrugated pipe type double-base sleeve valve Download PDFInfo
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- CN104405908A CN104405908A CN201410502406.XA CN201410502406A CN104405908A CN 104405908 A CN104405908 A CN 104405908A CN 201410502406 A CN201410502406 A CN 201410502406A CN 104405908 A CN104405908 A CN 104405908A
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- valve
- valve core
- core body
- core assembly
- bellows
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a valve core component of a corrugated pipe type double-base sleeve valve. A traditional valve core in a traditional valve core component connected by a valve rod and a valve core is changed to an upper valve core body and a lower valve core body, respectively connected to two ends of a corrugated pipe and having respective sealing contact surfaces, to form a compound valve core with two sealing contact surfaces. In the valve core component, when the valve is closed, a medium channel for flowing a medium through two ends in the axial direction of the valve rod on the upper valve core body and the lower valve core body to form a balance structure. In the double-base sleeve valve using the valve core, as the corrugated pipe is arranged between the two sealing contact surfaces of the core component, the rigidity is lower, the pressure on the two sealing surfaces formed by fitting the valve core component and the two valve bases is easily controlled when the valve is closed, the conditions of realizing reliable sealing by the two sealing surfaces are satisfied to realize reliable sealing of the valve, and the problems of unreliable sealing and higher leakage quantity of a traditional double-base sleeve valve are solved.
Description
Technical field
The present invention relates to a kind of two-seater telescoping valve mangetic core assembly structure, specifically, just relate to a kind of valve rod and be connected formed two-seater telescoping valve mangetic core assembly with compound spool.Compound spool refers to be connected respectively by bellows two ends respectively have the upper valve core body of a sealing contact surface and lower valve core body and the spool with two sealing contact surfaces formed, this kind of mangetic core assembly, when valve closing, there is the medium channel allowing medium circulate at stem shaft two ends upwards at upper valve core body and lower valve core body, normally on upper valve core body and lower valve core body, be provided with medium channel hole, make spool become balance type structure.
Background technique
Adopt the traditional double seat telescoping valve of conventional valve core assembly, generally use as modulating valve, it has lot of advantages compared with single-seat adjusting valve, as: a, employing balanced plug, unbalanced force is little, is applicable to large pressure reduction, bigbore occasion, can adopts less actuator; B, sleeve and valve core chamber guide surface are large, and unbalanced force change is less in addition, can improve eddy current and impact the vibration caused, therefore not easily cause disc vibration, operate also more stable; C, Flow characteristics are determined by the window on sleeve, as long as change the sleeve with different windows, just can obtain different flow coefficients and different Flow characteristicss etc., also have other advantage just not enumerate.
But this two-seater telescoping valve, especially large diameter valve but exist close time seal unreliable, the shortcoming that leakage rate (referring to interior leakage) is larger, it does not have both the function of stop valve, usually be used in the less demanding occasion of leakage rate, if using it to the exigent occasion of leakage rate, will connect one and reliably can cut off the valve of medium, both cost is added like this, turn increase the complexity of operation, little employing, therefore this disadvantage limits two-seater telescoping valve and is requiring to leakage rate the application that high field is closed.
Produce the reason of leaking to two-seater telescoping valve below to analyze: for Fig. 1 and Fig. 2, Fig. 1 is the traditional double cover for seat cylinder valve seal principle schematic adopting conventional valve core assembly, mangetic core assembly is the assembly parts that valve rod 6 is connected with traditional spool 5, Fig. 2 is the two-seater telescoping valve sealing principle schematic diagram adopting mangetic core assembly of the present invention, and mangetic core assembly is the assembly parts that valve rod is connected with compound spool 7.As shown in both figures, the valve position that generation is leaked when closing is: be provided with the sleeve 2 of window 201 and two cooperation places of valve body 3 and lower seal pad 4; Two sealing contact surfaces on mangetic core assembly coordinate the upper sealing surface 100 and lower sealing surface 200 place that are formed with two sealing contact surfaces of corresponding two valve seats.Two cooperation places of sleeve and valve body and lower seal pad, can accomplish medium featuring rigid cutting-off in practice, leak and mainly go up sealing surface and lower sealing surface and can not realize reliable sealing simultaneously cause, as long as solve this problem, just overcome the shortcoming of traditional double seat telescoping valve existence.
Make two sealing surfaces form reliable sealing simultaneously, will ensure that two sealing surfaces have enough pressure simultaneously, two specific pressure values that these two pressure are produced on two sealing surfaces are greater than the necessary specific pressure that two sealing surfaces realize reliable sealing separately simultaneously.
Pressure on two sealing surfaces is the distribution to driving force, under the effect of driving force, mangetic core assembly and valve seat two length (hereinafter referred to as two length) separately between two sealing contact surfaces change, create certain amount of deformation, make contact with each other between two sealing contact surfaces respective on two sealing surfaces and produce pressure.Under the condition that valve mechanism is determined, two structural rigidity (hereinafter referred to as two stiffness) on mangetic core assembly and valve seat between respective two sealing contact surfaces also just determine.Want to make valve under the effect of set enough driving forces, driving force is made reasonably to be assigned on two sealing surfaces, meet two sealing surfaces and form the condition of reliable sealings, just require under two rigidity synergy, two length have suitable matching relationship and two suitable amount of deformation.
In sum, two-seater telescoping valve is made when valve closing to the condition of media implementation reliable sealing to be: having under two certain rigidity conditions, two length should have suitable matching relationship, and the amount of deformation that generation two is suitable under driving force is used, set enough driving forces are reasonably assigned on two sealing surfaces, the specific pressure that two sealing surfaces are formed is greater than simultaneously necessary specific pressure that two sealing surfaces realize reliable sealing separately.
Traditional two-seater telescoping valve, elastic component is not all had to be connected between mangetic core assembly with two sealing contact surfaces respective on valve seat, two rigidity are all very large, and this means that the matching relationship met two sizes of driving force reasonable distribution relation is very accurate, two length deformation amounts are also very little.The size deviation of two length should meet the coupling deviation of permission and the requirement of amount of deformation deviation, the condition that valve confrontation realizes reliable sealing could be met, but because the desirable deviation of two sizes is difficult to determine, setting value inherently with have deviation required by ideal, reduce the permission coupling deviation of two sizes, and the amount of deformation of two length is inherently very little, the deviation of permission is just less, causes the dimension precision requirement of two length very high.
Existing level of processing is difficult to this required precision reaching two length, the machining deviation of two length is inherently likely beyond the perfect match difference of two sizes or the distortion value of two length, therefore often cause when driving mechanism provides enough driving forces, two sealing contact surfaces on a sealing surface are had not contact in two sealing surfaces, there is gap, seal pressure is zero, can not meet air-proof condition; Or the specific pressure formed on a sealing surface far exceedes the necessary specific pressure realizing reliable sealing, but the specific pressure on another sealing surface is less than the necessary specific pressure that realizes reliable sealing and can not meet air-proof condition, and produce leakage, if there are two sealing contact surfaces on a sealing surface not contact, the leakage rate of generation will be larger.
Following three measures are often adopted to solve this problem in actual production: a, increasing implementation capacity, simultaneously object improves the pressure of two sealing surfaces, make two sealing surface upward pressures meet the requirements of possibility to be improved simultaneously, but because root problem does not solve, carry out this measure to be difficult to determine to the effect improving pressure, although leakage problem makes moderate progress, reliably do not solved.And strengthen implementation capacity and increase actuator exactly, take this measure to be exactly sacrifice the advantage that two-seater telescoping valve can adopt less actuator; B, employing spool and valve base chamber size join the method for work, but incomplete due to measurement means, the assembling condition of spool in valve comparatively blindly, be difficult to determine adjustment direction and adjustment amount, and root problem also produces and is not resolved, therefore, although leakage problem makes moderate progress, be not also well solved; C, pairing grinding, two sealing surfaces formed due to mangetic core assembly and valve seat are that two seals face is ground, and always have a sealing surface after specific pressure reaches a certain particular value, can not improve again and likely can not meet and have enough seal pressures and produce leakage.Adopt b, c two kinds of measures also can make not possess interchangeability between each part, both reduced manufacturing efficiency, and turn increased cost of production and maintenance difficulty.
Even if by taking reprocessabilty in production process, accidentally be issued to seal request in a certain state, but in actual use, because material thermal expansion coefficient, rigidity are different with structure, can, due to the change of temperature, original sealing state be changed, because two stiffness are all very large, the impact that this change causes the relations of distribution on sealing surface two original driving force is also very large, may destroy the sealing state that originally formed significantly and produce leakage.
Summary of the invention
The present invention is directed to traditional double seat telescoping valve, to there is valve because mangetic core assembly coordinates with two valve seats unreliable to medium-tight, the shortcoming that leakage rate is larger, a kind of novel two-seater telescoping valve mangetic core assembly structure is provided, enables the two-seater telescoping valve of this mangetic core assembly of employing solve this shortcoming of traditional double seat telescoping valve.
The technical solution adopted in the present invention is: valve rod and compound spool connect to form two-seater telescoping valve mangetic core assembly.Compound spool refers to and connects the upper valve core body 8 with upper sealing contact surface 801 and the lower valve core body 10 with lower seal surface of contact 1001 respectively by bellows 9 two ends, the spool with two sealing contact surfaces of formation.Mangetic core assembly, when valve closing, has the medium channel allowing medium circulate at stem shaft two ends upwards at upper valve core body and lower valve core body.Medium channel in an embodiment, is on upper valve core body and lower valve core body, be respectively equipped with medium channel hole 802 and lower medium channel hole 1002, utilizes the pressure balance of medium, reduces the axial force of valve rod, makes valve become balanced-type valve.
Connect because centre has flexible bellows, rigidity value between two sealing contact surfaces on such mangetic core assembly will reduce greatly, under the effect of set driving force, amount of deformation on spool between two sealing contact surfaces is very large, the distribution of driving force on two sealing surfaces depends primarily on stiffness and the amount of deformation of bellows, the dimensional accuracy of two length, rigidity on sleeve between two sealing surface of seats and stress deformation amount, and temperature variation is all very little on the distribution impact on sealing surface two on driving force, as long as therefore we are given not strict to deviation requirement by design, suitable bellows stiffness and amount of deformation, just can ensure that driving force produces on two pairs of sealing surfaces stable, the rational relations of distribution, carry out the seal request of satisfied two sealing surfaces, solve valve unreliable to medium-tight, the problem that leakage rate is larger.
This kind of mangetic core assembly, valve is when closing, medium channel be formed with various ways, as: a, be that the blow-by that valve rod connects with upper valve core body or lower valve core body is formed, as Fig. 3 structure of splitting annulus 12 and hexagonal socket nut 11 and connect valve rod and upper valve core body, this connecting structure just may blow-by; B, be that the blow-by that valve rod coordinates with upper valve core body or lower valve core body is formed, as the valve rod of Fig. 4 and being slidably matched of lower valve core body are located; C, on valve rod, or on extension bar 17, or valve rod and the associated part that is connected with valve rod, or extension bar and the associated part that is connected with extension bar establish medium channel, owing to seldom adopting, do not embody in an embodiment; The structure of d, upper valve core body or lower valve core body itself just has medium channel hole, as the circle structure of the lower valve core body of Fig. 3; The medium channel of e, the various forms that upper valve core body and lower valve core body are established specially and shape, as Fig. 4 is provided with medium channel hole on upper valve core body and lower valve core body.
In above-mentioned example, due to a, b two, can form medium channel uncertain, and the passage flow amount of formation is also very little, and medium can not circulate smoothly, affect action and the performance of valve, generally do not adopt, c item is more complicated, and destroys the intensity of associated part, flow also can not be very large, also do not adopt, generally adopt the mode of d, e item, both this body structure medium channel hole of just there is medium channel hole or establishing specially.
The mangetic core assembly of this kind of valve, as required, the connection of valve rod and compound spool can be varied, as: the Connecting format as shown in each embodiment, also can adopt other form.
It should be noted that: because sealing contact surface can be plane, also can be the curved surface of the conical surface, sphere or other form, when sealing contact surface is non-planar surface, force value sum on upper and lower two sealing surfaces is unequal with driving force value, the pressure of upper and lower two sealing surfaces is just equal with driving force value in the component value sum of driving force direction (stem shaft to), during design, both conversion relations be noted.
The invention has the beneficial effects as follows: two distribution of pressure to driving force on a, two sealing surfaces that two-seater telescoping valve mangetic core assembly coordinated with two valve seats formed are easier to be controlled; B, owing to being elastic structure between spool two sealing surface, have certain flexibility, reduce cooperation between mangetic core assembly and valve seat two pairs of sealing contact surfaces to the requirement of form and position tolerance, make two sealing surfaces more easily obtain more uniform specific pressure, the effect of sealing is more reliable; C, less driving mechanism can be adopted to greatest extent.
Accompanying drawing explanation
Fig. 1 is the traditional double cover for seat cylinder valve seal principle schematic adopting conventional valve core assembly.
Fig. 2 is the two-seater telescoping valve sealing principle schematic diagram adopting mangetic core assembly of the present invention.
Fig. 3 ~ Fig. 8 is preferred embodiment of the invention structural representation.
In accompanying drawing: 1, valve gap; 100, upper sealing surface; 2, sleeve; 200, lower sealing surface; 201, window; 3, valve body; 4, lower seal pad; 5, traditional spool; 6, valve rod; 7, compound spool; 8, upper valve core body; 801, upper sealing contact surface; 802, upper medium channel hole; 9, bellows; 10, lower valve core body; 1001, lower seal surface of contact; 1002, lower medium channel hole; 11, hexagonal socket nut; 12, annulus is split; 13, nut; 14, adjusting sleeve; 15, floor clip; 16, union (screwed)bonnet (UB; 17, extension bar.
Embodiment
Below in conjunction with Fig. 3 ~ Fig. 8, by several preferred embodiment of the invention structural representation, the present invention is described in further detail.
Note: the moving direction of following indication, is upper with nearly valve gap 1 direction, is reversed down; Two valve seats for upper valve base, are lower valve base away from valve gap side with close valve gap side.
Embodiment one: as shown in Figure 3, being connected respectively by bellows two ends respectively has the upper valve core body of a sealing contact surface and lower valve core body to form the compound spool with two sealing contact surfaces, two valve cores are all provided with medium channel hole, valve rod and upper valve core body by valve rod split annulus and hexagonal socket nut connects, form mangetic core assembly, the lower valve core body of mangetic core assembly is free end, employing be circle structure.
This kind connects, and rotatably, needs when needing valve rod to rotate with the actuator adapting to be connected with valve, as manual actuator, many revolution automatic executing agencies just have the situation needing valve rod to rotate for valve rod and compound valve core chamber.
Adopt the valve of this mangetic core assembly structure when carrying out closing motion, mangetic core assembly entirety moves down, first lower seal surface of contact contacts with the sealing contact surface of lower valve base, lower valve core body position is fixed, under the effect of driving force, valve rod drives upper valve core body to continue downwards, compression is formed to bellows, lower sealing surface is made to produce pressure, until upper sealing contact surface contacts with the sealing contact surface of upper valve base, also be fixed up in the position of upper valve core body, driving force continues to increase, and makes sealing surface also create pressure.By rational design, the pressure on two sealing surfaces can be made to reach reliable sealing requirement.
Bellows is free state when valve is in maximum unlatching, is compressive state during closedown.
Embodiment two: as shown in Figure 4, being connected respectively by bellows two ends respectively has the upper valve core body of a sealing surface and lower valve core body to form the compound spool with two sealing contact surfaces, two valve cores are all provided with medium channel hole, valve rod is welded on upper valve core body and forms a fixed connection, form mangetic core assembly, valve rod stretches out one section downwards, and is formed with lower valve core body and be slidably matched, to reduce vibration, what lower valve core body adopted is the structure with the mesopore that is slidably matched.
Adopt the valve closing action of this mangetic core assembly structure, bellows maximum open and close time state identical with embodiment one.
Embodiment three: as shown in Figure 5, being connected respectively by bellows two ends respectively has the upper valve core body of a sealing contact surface and lower valve core body to form the compound spool with two sealing contact surfaces, two valve cores are all provided with medium channel hole, it is sleeved on valve rod, be fixedly connected with nut 13 by the screw thread of valve rod on it again, make compound spool under lower valve core body and valve rod are in the state of being slidably matched, be positioned in stem shaft upwards, bellows now should be made to be in its pre-compressed state.Also an adjusting sleeve 14 be sleeved on valve rod can be increased, adjust two length, make the recompression amount of bellows generation when valve carries out closing motion little as far as possible, so both can conserve space to greatest extent, the sensitivity of valve to mangetic core assembly motor imagination can be improved again.
Adopt the valve closing action of this mangetic core assembly structure identical with embodiment one, just in embodiment one, bellows compresses from free state, amount of deformation reaches requirement from zero always, and the present embodiment bellows is then that recompression reaches requirement from its pre-compressed state.
Bellows is its pre-compressed state when valve is in maximum unlatching, is little stroke recompression state during closedown.
The mangetic core assembly of this structure, owing to have employed bellows precompression form, reduces compound spool in the upwards shared space of stem shaft.
Embodiment four: as shown in Figure 6, being connected respectively by bellows two ends respectively has the upper valve core body of a sealing contact surface and lower valve core body to form the compound spool with two sealing contact surfaces, two valve cores are all provided with medium channel hole, valve rod and lower valve core body form mangetic core assembly by the screw thread fastening nuts on valve rod, upper valve core body is and valve stem slides abutting end, to reduce vibration.What upper valve core body adopted is the structure with the mesopore that is slidably matched.
The valve of this structure is when carrying out closing motion, mangetic core assembly entirety moves down, first the upper sealing contact surface of upper valve core body contacts with the sealing contact surface of upper valve base, and upper valve core body position is fixed, under the effect of driving force, valve rod drives lower valve core body to continue downwards, bellows is formed and stretches, make sealing surface produce pressure, until the sealing contact surface of lower valve core body contacts with the sealing contact surface of lower valve base, driving force continues to increase, and makes lower sealing surface also create pressure.By rational design, the pressure on two sealing surfaces can be made to reach reliable sealing requirement.Mangetic core assembly move upward to open completely time, bellows can be in compressive state, reduces the stem shaft upwards space that compound spool is shared when valve is opened completely.
Bellows is free state or compressive state when valve is in maximum unlatching, is extended state during closedown.
Embodiment five: as shown in Figure 7, being connected respectively by bellows two ends respectively has the upper valve core body of a sealing contact surface and lower valve body to form the compound spool with two sealing contact surfaces, two valve cores are all provided with medium channel hole, valve rod welds with lower valve core body and forms a fixed connection, composition mangetic core assembly, upper valve core body is free end, employing be circle structure.
Adopt the valve closing action of this mangetic core assembly structure, the state of bellows when maximum opening and closing is identical with embodiment four.
Embodiment six: as shown in Figure 8, being connected respectively by bellows two ends respectively has the upper valve core body of a sealing contact surface and lower valve body to form the compound spool with two sealing contact surfaces, two valve cores are all provided with medium channel hole, valve rod and upper valve core body adopt splits annulus and union (screwed)bonnet (UB 16 is connected, floor clip 15 plays locking effect, extension bar is welded on upper valve core body, lower valve core body is by extension bar and adjusting sleeve, be that its pre-compressed state is axially located with nut, the effect of adjusting sleeve is identical with embodiment three, and what formed between valve rod with upper valve core body is also rotatable connection.
Adopt the valve closing action of this mangetic core assembly structure, the state of bellows when maximum opening and closing is identical with embodiment three.
Mangetic core assembly of the present invention, not only may be used for various forms of two-seater telescoping valve, is provided with in the valve of many symmetrical apertures or stacked formula labyrinth channel etc., can also be used in the pipe valve type valve of other pattern with double-valve-seat as sleeve adopts.
More than that the present invention will be described for employing preferred embodiment; not limitation of the invention; the conversion adopt existing known technology in the present invention, doing to the present invention in its concept and it being used in other structure, does not hinder protection scope of the present invention.As: as described in bellows waveform can adopt U-shaped, C shape, Ω shape, V-arrangement, stepped shaft etc., pattern can adopt with stiffening ring structure etc., these are all the known technologies of bellows; Being fixedly connected with of described valve rod and upper valve core body or lower valve core body can be weld, be fastenedly connected; Described bellows and the connection of upper and lower valve core can be weld, rolling laminated connection, bonding etc., these are all the known technologies of Placement; Described upper and lower two equalizing orifice shapes can be circular as required, triangle, can be also hollow structure, make upper valve core body or lower valve core body form an annulus; In upper and lower valve core, any one can be replaced by bellows end pipe belt, and these are all to the conversion of the present invention in its concept; Described two-seater telescoping valve be used for other have in the pipe valve type valve of double-valve-seat be valve of the present invention in other structure, etc., do not affect the protection domain of bellows two-seater telescoping valve mangetic core assembly of the present invention.
Claims (8)
1. a bellows two-seater telescoping valve mangetic core assembly, comprise valve rod, spool, the fastening piece that valve rod connects with spool, it is characterized in that: valve rod and compound spool connect to form mangetic core assembly, the spool in mangetic core assembly is that bellows two ends connect the compound spool with two sealing contact surfaces respectively having the upper valve core body of a sealing contact surface and lower valve core body to form respectively.
2. bellows two-seater telescoping valve mangetic core assembly according to claim 1, is characterized in that: when valve closing, and mangetic core assembly has the medium channel allowing medium circulate at stem shaft two ends upwards at upper valve core body and lower valve core body.
3. bellows two-seater telescoping valve mangetic core assembly according to claim 1, is characterized in that: the upper valve core body of compound spool has medium channel hole.
4. bellows two-seater telescoping valve mangetic core assembly according to claim 1, is characterized in that: the lower valve core body of compound spool has medium channel hole.
5. bellows two-seater telescoping valve mangetic core assembly according to claim 1, it is characterized in that: valve rod and the connection of compound spool can adopt valve rod to be connected with the upper valve core body of compound spool, or valve rod connects with the lower valve core body of compound spool, or combination valve core retainer plate to be contained in valve rod first-class.
6. bellows two-seater telescoping valve mangetic core assembly according to claim 1, is characterized in that: mangetic core assembly comprises fastening piece.
7. bellows two-seater telescoping valve mangetic core assembly according to claim 1, is characterized in that: mangetic core assembly comprises extension bar, adjusting sleeve.
8. bellows two-seater telescoping valve mangetic core assembly according to claim 5, is characterized in that: the connecting to adopt of valve rod and compound spool is fixedly connected, and also can adopt and can relatively rotate connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410502406.XA CN104405908A (en) | 2014-08-30 | 2014-09-28 | Valve core component of corrugated pipe type double-base sleeve valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434923 | 2014-08-30 | ||
| CN2014104349238 | 2014-08-30 | ||
| CN201410502406.XA CN104405908A (en) | 2014-08-30 | 2014-09-28 | Valve core component of corrugated pipe type double-base sleeve valve |
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|---|---|
| CN104405908A true CN104405908A (en) | 2015-03-11 |
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| CN201410502406.XA Pending CN104405908A (en) | 2014-08-30 | 2014-09-28 | Valve core component of corrugated pipe type double-base sleeve valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736706A (en) * | 2014-12-06 | 2016-07-06 | 申宝光 | Stop valve with bellow type valve element |
| CN112066134A (en) * | 2020-08-28 | 2020-12-11 | 安徽威迈光机电科技有限公司 | Compensator assembly device for energy accumulator |
| CN113202967A (en) * | 2021-04-30 | 2021-08-03 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Ultralow temperature switch valve for low temperature wind tunnel |
| CN113309858A (en) * | 2021-06-04 | 2021-08-27 | 浙江万龙机械有限公司 | Valve rod high-frequency opening and closing anti-shaking valve for ammonia |
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| CN105736706A (en) * | 2014-12-06 | 2016-07-06 | 申宝光 | Stop valve with bellow type valve element |
| CN105736706B (en) * | 2014-12-06 | 2018-07-10 | 申宝光 | Bellows spool pipe valve shape valve |
| CN112066134A (en) * | 2020-08-28 | 2020-12-11 | 安徽威迈光机电科技有限公司 | Compensator assembly device for energy accumulator |
| CN113202967A (en) * | 2021-04-30 | 2021-08-03 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Ultralow temperature switch valve for low temperature wind tunnel |
| CN113202967B (en) * | 2021-04-30 | 2022-10-04 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Ultralow temperature switch valve for low temperature wind tunnel |
| CN113309858A (en) * | 2021-06-04 | 2021-08-27 | 浙江万龙机械有限公司 | Valve rod high-frequency opening and closing anti-shaking valve for ammonia |
| CN113309858B (en) * | 2021-06-04 | 2023-06-23 | 浙江万龙机械有限公司 | Valve rod high-frequency opening and closing anti-shake valve for ammonia |
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