CN103775702A - Valve - Google Patents
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- CN103775702A CN103775702A CN201210424772.9A CN201210424772A CN103775702A CN 103775702 A CN103775702 A CN 103775702A CN 201210424772 A CN201210424772 A CN 201210424772A CN 103775702 A CN103775702 A CN 103775702A
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- Prior art keywords
- valve
- main pipeline
- cavity
- connecting pipe
- working medium
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
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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
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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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention relates to a valve. The valve carries out sensing on the pressure of working media, and generates driving force to have control over the flow of the working media. The valve comprises a valve body and a driving device, wherein an exhaust hole is further formed in a sensing cavity of the driving device, and an exhaust device is further arranged on the sensing cavity of the driving device. According to the valve, air which enters the sensing cavity along with the working media can be exhausted out of the sensing cavity through the exhaust hole formed in the driving device of the valve, the performance of the valve is optimized, and working stability of the valve is ensured.
Description
Technical field
The present invention relates to a kind of valve for induction medium pressure.
Background technique
At present on drive unit and the valve that comprises drive unit, such as final controlling element and modulating valve, it has seal chamber, in working medium is filled into cavity time, the air being entrained in working medium also can enter in cavity, the state that can exist all the time air jointly to mix with working medium in cavity, if working medium is liquid, will certainly cause a large amount of compressible air and incompressible liquid to be jointly present in drive unit.Although drive unit still can be worked, can cause its job insecurity.
Concrete, valve as described in Figure 1, described valve 1 comprises drive unit 10, housing 11 and the diaphragm 12 of described drive unit forms an induction cavity 13 up and down, diaphragm 12 is also connected with live axle 14, diaphragm 12 can sense the pressure in cavity and drive live axle 14, and live axle 14 further drives mangetic core assembly 15 to control working medium.When the air being mingled with in working medium enters after valve, working medium can enter in the airtight cavity of drive unit, the air that makes to accumulate in chamber discharges nowhere, the state that can jointly mix with working medium at air all the time in chamber, and the air that the volume of chamber accumulates is more greatly just more, this is by more and more less the space that causes holding in cavity working medium, because the capacity of working medium in cavity diminishes, by causing, the pressure of diaphragm induction working medium is inaccurate, causes the unstable of valve.
Summary of the invention
The invention provides a kind of valve, solved the unsettled problem of the valve of above-mentioned existence.
Described valve connects fluid main pipe, and regulates the pressure in described main pipeline; Comprise, valve body and drive unit, described drive unit is connected with valve body; Described valve body includes oral cavity and outlet plenum, and described entrance cavity connects the upstream line of described main pipeline, and described outlet plenum connects the downstream line of described main pipeline; Between described entrance cavity and described outlet plenum, be provided with flow control device, the flow of the working medium in described flow control device control valve; Described drive unit comprises induction cavity and live axle, and described induction cavity is made up of diaphragm and housing, and described diaphragm connects one end of described live axle, the pressure of described diaphragm in can sensitive cavity, and drive live axle to move; Described housing is provided with exhaust port; The other end of the live axle of described drive unit connects described flow control device.
The housing of the described induction cavity of above-mentioned valve is provided with the first connecting pipe, and described exhaust port in the vertical direction is positioned at the top of the link position of described the first connecting pipe and described housing.
Described first connecting tube of above-mentioned valve is connected between described housing and main pipeline downstream line, between described exhaust port and the downstream line of described main pipeline, is provided with the second connecting pipe; The joint of the downstream line of described the second connecting pipe and described main pipeline is positioned at the downstream of the joint of described the first connecting pipe and described main pipeline downstream line.
Described first connecting tube of above-mentioned valve is connected between described housing and main pipeline upstream line, between described exhaust port and the upstream line of described main pipeline, is provided with the second connecting pipe; The joint of the upstream line of described the second connecting pipe and described main pipeline is positioned at the downstream of the joint of the upstream line of the first connecting pipe and described main pipeline.
The described exhaust port of above-mentioned valve connects venting gas appliance, and the gas in induction cavity is discharged in described venting gas appliance control.
The described venting gas appliance of above-mentioned valve is obstruction or outlet valve.
The described flow control device of above-mentioned valve is flap, described flap is located at the termination of described live axle, described valve also comprises the valve port of being located in valve body, described valve port is located between entrance cavity and outlet plenum, described flap coordinates with described valve port, and described flap forms open and closed state with movement and the described valve port of described live axle.
The valve that the embodiment of the present invention provides comprises drive unit, on induction cavity on described drive unit, be provided with exhaust port, simultaneously, this exhaust port is positioned at the top of induction cavity, because foreign gas is along with working medium enters induction inside cavity, the foreign gas that density is less is positioned at top, and working medium is positioned at the below of induction cavity, thereby the exhaust port that is positioned at top can will be responded to the Bas Discharged of cavity with the working stability of maintaining valve more easily.
On the one hand, on described exhaust port, be connected with obstruction or outlet valve, realize manual exhaust.Be embodied in, when valve is in the time working, can termly obstruction or outlet valve be opened to discharge the air accumulating in induction inside cavity.
On the other hand, on described exhaust port, be connected with the second connecting tube, the other end of this second connecting tube can be connected on main pipeline, be conducive to the automatic cycle of working medium, and the air adulterating in the working medium in induction cavity is discharged in main pipeline, the automatic cycle passage that also forms working medium when reaching exhaust effect in valve, reaches self-bleeding function, further reaches the effect of stable operation pressure medium.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of valve in prior art;
Fig. 2 is the schematic diagram of a kind of valve of providing of one of embodiment of the present invention;
Fig. 3 is the schematic diagram of a kind of upside-down mounting valve of providing of one of embodiment of the present invention;
Fig. 4 is the schematic diagram of the another kind of valve that provides of one of embodiment of the present invention;
Fig. 5 is the schematic diagram of the another kind of valve that provides of one of embodiment of the present invention;
Fig. 6 is the schematic diagram of the another kind of valve that provides of one of embodiment of the present invention;
Fig. 7 is the schematic diagram of the another kind of upside-down mounting valve that provides of one of embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technological scheme of the present invention is described further.
Embodiment 1
The invention provides a kind of specific embodiment of valve, as shown in Figure 2, described valve 2 is connected on fluid main pipe 3, and for controlling the pressure of working medium in described main pipeline.Described valve 2 comprises drive unit 20, valve body 22, and controlling device 23, and described working medium is liquid.
Described drive unit 20 comprises induction cavity 201 and live axle 202, and described induction cavity 201 is by diaphragm 203, and housing 204 assemblings form.In the time that valve is in running order, working medium flows in described induction cavity 201, and described diaphragm 203 can be responded to the pressure of working medium, and can move according to the pressure of induction cavity 201 interior working mediums; Described diaphragm 203 is connected with one end of described live axle 202, and in the time that diaphragm 203 moves according to the indoor pressure of induction cavity, described live axle 202 is along with corresponding movement is done in the movement of described diaphragm.
Described valve body 22 includes the valve port 222 between oral cavity 220 and outlet plenum 221 and the entrance cavity in described valve body 220 and outlet plenum 221.Described entrance cavity 220 connects the upstream line 31 of described main pipeline, and described outlet plenum 221 connects the downstream line 32 of described main pipeline, between described outlet plenum and described entrance cavity, is provided with flow control device 24, for controlling the flow in valve of working medium; Described flow control device 24 is connected to one end of described live axle 202, and it can be specifically the flap that is connected to one end of described live axle, and described flap coordinates with described valve port 222 opening and the closed state that are formed between oral cavity and outlet plenum.
Concrete, in the time that the working medium consumption in described main pipeline downstream 32 increases, the pressure drop of induction cavity 201, make diaphragm 203 under the active force of controlling device 23, drive described flap 24 to move down, described flap 24 and the aperture of described valve port 222 are strengthened, thereby increase by the working medium flow of main pipeline upstream line 31, use mouth pressure and rise to maintain the constant of main pipeline downstream pressure.Contrary, in the time that the working medium consumption in described main pipeline downstream 32 reduces, the pressure of induction cavity 201 raises, make diaphragm 203 under the active force of controlling device 23, drive described flap 24 to move up, described flap 24 and the aperture of described valve port 222 are reduced, thereby reduce by the working medium flow of main pipeline upstream line 31, maintain the constant pressure of main pipeline downstream line 32.
Described controlling device 23 is for the standard pressure of the working medium at the main pipeline downstream line place of default described valve, in the time that described diaphragm moves along with the pressure of induction cavity 201 interior working mediums, the amplitude that described controlling device 23 can move according to diaphragm 203 produces a relative power to it, the mobile range that cushions on the one hand diaphragm, remains by the pressure of the working medium at main pipeline downstream line place the force value of reserving in advance on the other hand.Concrete, described live axle 202 drives described flow control device 24 to coordinate with described valve port 222, make the working medium discharge value between entrance cavity 220 and outlet plenum 221 remain on a stable scope, finally make the pressure of the working medium that flows into described main pipeline downstream line remain in the standard pressure setting.
The valve of the present embodiment also has the first connecting pipe 25 and the second connecting pipe 26, on the described housing of the induction cavity of described valve, be also provided with exhaust port 261, concrete, one end of described the first connecting pipe 25 is arranged on the described housing 204 of described drive unit 20, connection mouth on itself and described housing is first interface 251, and the other end of described the first connecting pipe is also provided with the second interface 252; Described the second connecting pipe 26 is connected with described exhaust port 261, and the other end of described the second connecting pipe is the 3rd interface 262; Described exhaust port 261 on described housing is positioned at the top of described first interface 251, and the working medium pressure at described the 3rd interface 262 places is less than the working medium pressure at described the second interface 252 places.
Described second interface 252 of described the first connecting pipe 25 can be arranged in the downstream line 32 or upstream line 31 of main pipeline, also can be arranged on the entrance cavity 220 or outlet plenum 221 of valve body.No matter where the second interface 252 of the second connecting pipe is arranged on, or described valve formal dress no matter, upside-down mounting or side are contained on main pipeline, the working medium pressure that need remain described the second interface 252 places is greater than the thread a pipe pressure of working medium at 26 the 3rd interface 262 places of described second, simultaneously, first interface 251 in the vertical directions of described the first connecting pipe 25 on described housing 204, are positioned at the below of the described exhaust port 261 on housing 204 all the time.
Preferably, as shown in Figure 2, described first threads a pipe is arranged between housing and main pipeline downstream line, and described first interface 251 is positioned on the housing of described induction cavity, and described the second interface 252 is positioned in main pipeline downstream line.When working medium flows into entrance cavity 220 from main pipeline upstream line 31, while flowing into main pipeline downstream line 32 by valve port 222 and outlet plenum 221, described working medium can be along described the second interface 252, the first connecting pipe 25, and first interface 251 enters in induction cavity 201, be that described the first connecting pipe 25 is delivered to the pressure of the working medium at described main pipeline downstream line 32 places in the described induction cavity 201 of described drive unit 20, described induction cavity 201 correspondingly drives described live axle 202 according to the pressure of working medium, described live axle 202 drives the flow control device 24 of its other end in mobile process, described flow control device 24 coordinates with described valve port 222 opening and the closed state that are formed between oral cavity and outlet plenum in moving process.
Concrete, in the time that the working medium consumption in described main pipeline downstream 32 increases, the pressure drop of induction cavity, make diaphragm under the active force of controlling device 23, drive described flap 24 to move down, described flap 24 and the aperture of described valve port 222 are strengthened, thereby increase by the working medium flow of main pipeline upstream line 31, make outlet plenum 221 pressure rises to maintain the constant of main pipeline downstream line 32 pressure.Contrary, in the time that the working medium consumption of described main pipeline downstream line 32 reduces, the pressure of induction cavity 201 raises, make diaphragm 203 under the active force of controlling device 23, drive described flap 24 to move up, described flap 24 and the aperture of described valve port 222 are reduced, thereby reduce by the working medium flow of main pipeline upstream line 31, maintain the constant pressure of main pipeline downstream line 32.
Described exhaust port 261 on described housing is positioned at the top of described first interface 251, like this, after the air existing in working medium enters induction cavity 201, described working medium separates with foreign gas, foreign gas is positioned at the top of induction cavity, working medium is positioned at induction cavity below, because described exhaust port 261 is positioned at first interface 251 tops, be conducive to like this foreign gas and discharge from exhaust port, working medium can flow into along with described the first connecting pipe 32 li of the downstream line of main pipeline.In addition, described the first connecting pipe 25 is respectively equipped with described the second interface 252 and described the 3rd interface 262 with described the second connecting pipe 26 in the downstream line 32 of main pipeline, in the present embodiment, described the 3rd interface 262 is positioned at the downstream of described the second interface 251 in main pipeline downstream line, due in main pipeline along there is pressure difference on flow direction, the working medium pressure at described the second interface 252 places is greater than the pressure at described the 3rd interface 262 places.Like this when working medium enters valve body from main pipeline upstream line 31, the entrance cavity 220 of flowing through, outlet plenum 221, can described the second interface 252 and described the first connecting pipe 25 main pipeline downstream line flow in induction cavity 201, further transmission of pressure in induction cavity, make described drive unit drive described flow control device 24, due to connect the described exhaust port 261 of described the second connecting pipe 26 be positioned at connect described the first connecting pipe 25 shown in the top of first interface 251, further the air in extrusion chamber is discharged from described the second communicating passage 26, therefore adulterating the working medium of air can be along exhaust port 261, described the second connecting pipe 26 and described the 3rd interface 262 flow out induction cavity 201, , and along with working medium flows to downstream along main pipeline.It is a kind of dynamic chamber all the time that this cyclic process makes to respond to cavity, has further safeguarded the stability of valve body.
On the other hand, described valve formal dress in above-described embodiment is on described fluid main pipe, the valve of the present embodiment also can upside-down mounting on fluid main pipe, concrete, as shown in Figure 3, described controlling device 23 is positioned at described valve body 22 belows with described drive unit, second interface 252 of described the first connecting pipe 25 in described main pipeline downstream line is positioned at the upstream of described the 3rd interface 262 that described the second connecting passage 26 is connected with described main pipeline, simultaneously, the exhaust port 261 that connects described the second connecting pipe 26 is positioned at the top that connects the described first interface 251 of described the first connecting pipe 25 on described housing in vertical direction, be beneficial to by induction inside cavity be positioned at top gas discharge side external.In addition, this enforcement define the position on the vertical direction of housing, it can be the arbitrary position that is positioned at the described housing circumferential surface on described the second interface on described housing in the horizontal direction on this basis.
In the time that the second interface of described the first connecting pipe is arranged on described main pipeline upstream line, as shown in Figure 4, described the 3rd interface 262 of described the second connecting pipe 26 can be arranged on main pipeline upstream line place equally, simultaneously, described the second interface 252 is positioned at the upstream of described the 3rd interface 262, makes the pressure of the working medium at the second interface 252 places be greater than the pressure of the working medium at described the 3rd interface 262 places.The working medium of main pipeline upstream line flows in induction cavity 201 by described the second interface 252, described the first connecting pipe 25 and first interface 251, and pressure medium is passed in induction cavity, air in working medium can separate with working medium because density is different after entering induction cavity, and be positioned at induction cavity top, because exhaust port 261 designs above described first interface 251, be convenient to Bas Discharged induction cavity, along with described the second connecting pipe 26 is by valve body, flow to main pipeline downstream line 32.
In addition, in the time that the second interface of described the first connecting pipe is arranged on described main pipeline upstream line, described the 3rd interface of described the second connecting pipe also can be located at the relatively low pressure district on entrance cavity, should be noted, the working medium pressure of described the second jointing is greater than the pressure of the working medium of described the 3rd jointing all the time, and described exhaust port is positioned at the top of described first interface all the time.
In the time that the second interface 252 of described the first connecting pipe 25 is arranged on the entrance cavity 220 of valve body, described the 3rd interface 262 of described the second connecting pipe 26 also can be arranged on the entrance cavity 220 of described valve body, but described the 3rd interface 262 should be positioned at the relatively low pressure district of entrance cavity 220, described the second interface 252 should be located at the relatively high pressure district in entrance cavity 220.
In like manner, in the time that the second interface 252 of described the first connecting pipe 25 is arranged on the outlet plenum 221 of valve body, described the 3rd interface 262 of described the second connecting pipe 26 also can be arranged on the outlet plenum 221 of described valve body, described the 3rd interface 262 should be positioned at the relatively low pressure district of outlet plenum 221, and described the second interface 252 should be located at the relatively high pressure district in outlet plenum 221.In addition, the 3rd interface 262 of described the second connecting tube 26 also can be arranged in main pipeline downstream line 32, can guarantee that equally the working medium pressure of described the 3rd jointing of described the second connecting pipe is less than the working medium pressure of described the second jointing.As shown in Figure 5, described working medium can directly flow in induction cavity 201 along described the first connecting pipe 25 from the second interface 252, make diaphragm 203 its pressure of induction foldings with valve port 222 with adjust flux control gear 24, and then control the pressure of working medium in main pipeline downstream line 32.When working medium flows in induction cavity 201 by the first connecting pipe 25, diaphragm 203 its pressure of induction in induction cavity drive live axle 202 and fluid control device 24 to control the flow of the working medium at valve port 222 places; Because exhaust port 261 is positioned at described first interface 251 tops, along with the air that working medium enters in induction cavity 201 can be along with being positioned at outside the exhaust port 261 and the second connecting pipe 26 and the 3rd interface 262 discharge induction cavitys 201 of top.Avoid responding to accumulating of cavity 201 interior air, guaranteed the working stability of valve.
According to the valve of one of embodiment of the present invention, described valve is except formal dress is on main pipeline, also can upside-down mounting or side be contained on main pipeline, but the working medium pressure that need remain described the second jointing is greater than the pressure of the working medium of the 3rd jointing that described second threads a pipe, simultaneously, the first interface in the vertical direction of described the first connecting pipe on described housing, be positioned at all the time the described exhaust port of described the second connecting pipe on housing below.
The present embodiment is the one distortion of the valve to embodiment 1.As shown in Figure 6, described valve 4 is connected on fluid main pipe 5, and for controlling the pressure of working medium in described main pipeline.Described valve 4 comprises drive unit 40, valve body 42, and controlling device 43, and described working medium is liquid.
The same manner as in Example 2, described drive unit 40 comprises induction cavity 401 and live axle 402, and described induction cavity 401 is assemblied by diaphragm 403 and housing 404.In the time that valve is in running order, working medium flows in described induction cavity 401, and described diaphragm 403 can be responded to the pressure of working medium, and can move according to the pressure of induction cavity 401 interior working mediums; Described diaphragm 403 is connected with one end of described live axle 402, and in the time that diaphragm 403 moves according to the indoor pressure of induction cavity, described live axle 402 is along with corresponding movement is done in the movement of described diaphragm.
Described valve body 42 includes the valve port 422 between oral cavity 420 and outlet plenum 421 and the entrance cavity in described valve body 420 and outlet plenum 421.Described entrance cavity 420 connects the upstream line 51 of described main pipeline, and described outlet plenum 421 connects the downstream line 52 of described main pipeline, between described outlet plenum and described entrance cavity, is provided with flow control device 44, for controlling the flow in valve of working medium; Described flow control device 44 is connected to one end of described live axle 402, and it can be specifically the flap that is connected to one end of described live axle, and described flap coordinates the opening and the closed state that are formed between oral cavity and outlet plenum with described valve port.
Described controlling device 43 is for the standard pressure of the working medium at the main pipeline downstream line place of default described valve, in the time that described diaphragm moves up and down along with the pressure of induction cavity 401 interior working mediums, the amplitude that described controlling device 43 can move according to diaphragm 403 produces a relative power to it, the mobile range that cushions on the one hand diaphragm, remains by the pressure of the working medium at main pipeline downstream line place the force value of reserving in advance on the other hand.Concrete, described live axle 402 drives described flow control device to coordinate with described valve port, make the working medium discharge value between entrance cavity and outlet plenum remain on a stable scope, finally make the pressure of the working medium that flows into described main pipeline downstream line remain in the standard pressure setting.
The valve of the present embodiment also has the first connecting pipe 45, described the first connecting pipe 45 is arranged between described housing 404 and described main pipeline downstream line 52, and be provided with first interface 451 on described housing 404, in described main pipeline downstream line 52, be provided with the second interface 452.When working medium flows into entrance cavity 420 from main pipeline upstream line 51, while flowing into main pipeline downstream line 52 by valve port 422 and outlet plenum 421, described working medium can be along described the second interface 452, the first connecting pipe 45, and first interface 451 enters in induction cavity 401, be that described the first connecting pipe 45 is delivered to the pressure of the working medium at described main pipeline downstream line 52 places in the described induction cavity 401 of described drive unit 40, described induction cavity 401 correspondingly drives described live axle 402 according to the pressure of working medium, described live axle 402 drives the flow control device 44 of its other end in mobile process, described flow control device 44 coordinates with described valve port 422 opening and the closed state that are formed between oral cavity and outlet plenum in moving process.
Concrete, in the time that the working medium consumption in described main pipeline downstream increases, the pressure drop of induction cavity, make diaphragm under the active force of controlling device, drive described flap to move down, the aperture of described flap and described valve port is strengthened, thereby increase by the working medium flow of main pipeline upstream line, use mouth pressure and rise to maintain the constant of main pipeline downstream pressure.Contrary, in the time that the working medium consumption in described main pipeline downstream reduces, the pressure of induction cavity raises, make diaphragm under the active force of controlling device, drive described flap to move up, the aperture of described flap and described valve port is reduced, thereby reduce by the working medium flow of main pipeline upstream line, maintain the constant pressure of main pipeline downstream line.
According to the valve of the present embodiment, described valve also comprises a venting gas appliance 46, described venting gas appliance is for controlling the air of discharging induction inside cavity, be in particular in, described venting gas appliance 46 is connected with the described exhaust port 461 on described housing, and described exhaust port 461 be positioned at described first connecting tube way 45 described first interface 451 top, therefore when working medium is adulterating air while entering described induction cavity 401 along described the first connecting pipe 45, the air of doping is being responded to cavity meta above working medium, in the time that running up to certain degree, the air of induction cavity 401 inside can cause the unstable of valve, therefore can be regular open the venting gas appliance being connected on exhaust port, by external the Bas Discharged induction cavity that is positioned at induction cavity, in the time having working medium to discharge in described venting gas appliance, represent that the gas in induction cavity is drained, now close described venting gas appliance, described valve can normally stably move.
Described venting gas appliance in the present embodiment is a kind of obstruction, as plug etc.
Described venting gas appliance in the present embodiment can also be outlet valve, concrete as ball valve, the devices such as one-way valve.
The same manner as in Example 1, described the first connecting pipe 45 can be arranged on described housing and described outlet plenum, described working medium can flow in induction cavity from outlet plenum along described the first connecting pipe, make diaphragm respond to the folding of its pressure with adjust flux control gear and valve port, and then control the pressure of main pipeline downstream line working medium.
The same manner as in Example 1, described valve can upside-down mounting on described fluid main pipe, specifically see Fig. 7, described controlling device 43 is positioned at described valve body 42 belows with described drive unit, the exhaust port 461 that connects described venting gas appliance 46 is positioned at the top that connects the described first interface 451 of described the first connecting pipe 45 on described housing in vertical direction, so that the gas discharge side above induction inside cavity is positioned at is external.In addition, this enforcement only define the position on the vertical direction of housing, it can be on described housing, to be positioned at the arbitrary position on described first interface in the horizontal direction on this basis.
The valve that the present invention protects can be specifically pressure governor, back pressure valve or respond to and regulate the control valve of its pressure by other electronic induction element controls, but be not limited to above-mentioned valve.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Although can use term first, second, third, etc. etc. to describe various elements, parts or part at this, these elements, parts or part should not limited by these terms; These terms can be only for distinguishing element, parts or a part.When in the time that this uses term as " first ", " second " and other numerical value terms, it does not comprise order or order, unless explicitly pointed out in context.Therefore,, in the case of not departing from the explanation of exemplary embodiment, the following stated the first element, parts, part can be interpreted as term the first element, parts, part.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., be all included in protection scope of the present invention.
Claims (7)
1. a valve, described valve connects fluid main pipe, and regulates the pressure in described main pipeline;
It is characterized in that: described valve comprises, valve body and drive unit, described drive unit is connected with valve body;
Described valve body includes oral cavity and outlet plenum, and described entrance cavity connects the upstream line of described main pipeline, and described outlet plenum connects the downstream line of described main pipeline; Between described entrance cavity and described outlet plenum, be provided with flow control device, the flow of the working medium in described flow control device control valve;
Described drive unit comprises induction cavity and live axle, and described induction cavity is made up of diaphragm and housing, and described diaphragm connects one end of described live axle, the pressure of described diaphragm in can sensitive cavity, and drive live axle to move; Described housing is provided with exhaust port;
The other end of the live axle of described drive unit connects described flow control device.
2. valve according to claim 1, is characterized in that, the housing of described induction cavity is provided with the first connecting pipe, and described exhaust port in the vertical direction is positioned at the top of the link position of described the first connecting pipe and described housing.
3. valve according to claim 2, is characterized in that, described the first connecting tube is connected between described housing and main pipeline downstream line, between described exhaust port and the downstream line of described main pipeline, is provided with the second connecting pipe; The joint of the downstream line of described the second connecting pipe and described main pipeline is positioned at the downstream of the joint of described the first connecting pipe and described main pipeline downstream line.
4. valve according to claim 2, is characterized in that, described the first connecting tube is connected between described housing and main pipeline upstream line, between described exhaust port and the upstream line of described main pipeline, is provided with the second connecting pipe; The joint of the upstream line of described the second connecting pipe and described main pipeline is positioned at the downstream of the joint of the upstream line of the first connecting pipe and described main pipeline.
5. valve according to claim 2, is characterized in that, described exhaust port connects venting gas appliance, and the gas in induction cavity is discharged in described venting gas appliance control.
6. valve according to claim 5, is characterized in that, described venting gas appliance is obstruction or outlet valve.
7. valve according to claim 1, it is characterized in that, described flow control device is flap, described flap is located at the termination of described live axle, described valve also comprises the valve port of being located in valve body, described valve port is located between entrance cavity and outlet plenum, and described flap coordinates with described valve port, and described flap forms open and closed state with movement and the described valve port of described live axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210424772.9A CN103775702A (en) | 2012-10-22 | 2012-10-22 | Valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210424772.9A CN103775702A (en) | 2012-10-22 | 2012-10-22 | Valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103775702A true CN103775702A (en) | 2014-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210424772.9A Pending CN103775702A (en) | 2012-10-22 | 2012-10-22 | Valve |
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| CN (1) | CN103775702A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1392654A (en) * | 1971-04-16 | 1975-04-30 | Schlumberger Compteurs | Pressure regulator |
| WO2000020829A1 (en) * | 1998-10-02 | 2000-04-13 | Agl Consultancy Pty Ltd. | Fluid meter with pressure regulation |
| CN2514177Y (en) * | 2001-06-13 | 2002-10-02 | 黄艳 | Automatic differental pressure regulating valve |
| CN201187609Y (en) * | 2008-05-09 | 2009-01-28 | 姜宗哲 | Self-operated flow controlling valve |
| CN101963245A (en) * | 2010-09-28 | 2011-02-02 | 西安新竹防灾救生设备有限公司 | Foam\water mixing balanced valve |
-
2012
- 2012-10-22 CN CN201210424772.9A patent/CN103775702A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1392654A (en) * | 1971-04-16 | 1975-04-30 | Schlumberger Compteurs | Pressure regulator |
| WO2000020829A1 (en) * | 1998-10-02 | 2000-04-13 | Agl Consultancy Pty Ltd. | Fluid meter with pressure regulation |
| CN2514177Y (en) * | 2001-06-13 | 2002-10-02 | 黄艳 | Automatic differental pressure regulating valve |
| CN201187609Y (en) * | 2008-05-09 | 2009-01-28 | 姜宗哲 | Self-operated flow controlling valve |
| CN101963245A (en) * | 2010-09-28 | 2011-02-02 | 西安新竹防灾救生设备有限公司 | Foam\water mixing balanced valve |
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Application publication date: 20140507 |