CN203585436U - Switch valve assembly, anti-freezing water feeding pipe device and station water supply system - Google Patents
Switch valve assembly, anti-freezing water feeding pipe device and station water supply system Download PDFInfo
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- CN203585436U CN203585436U CN201320613372.2U CN201320613372U CN203585436U CN 203585436 U CN203585436 U CN 203585436U CN 201320613372 U CN201320613372 U CN 201320613372U CN 203585436 U CN203585436 U CN 203585436U
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Abstract
The utility model discloses a switch valve assembly, an anti-freezing water feeding pipe device and a station water supply system. A water inlet flow channel, a water outlet flow channel, a main flow channel, a three-way valve element, a main air valve, an auxiliary air valve, branch flow channels and a reset assembly are arranged in a valve body of the switch valve assembly. The three-way valve element triggers the auxiliary air valve when the water outlet flow channel is communicated to the main flow channel so as to enable the branch flow channels to be communicated to a first cavity to allow compressed air to enter the first cavity to act on the inner end face of a second piston, a first piston and the second piston are away from a compressed air inlet in the same direction, and partial compressed air flows out from the water outlet flow channel after entering the main flow channel. The second piston moves to trigger the reset assembly so as to drive the auxiliary air valve to reset to enable the branch flow channels to be communicated to a second cavity. When the acting force of compressed air in the second cavity to the outer end face of the second piston is larger than the acting force of the compressed air in the main flow channel to the first piston, the first piston enables the compressed air inlet to be closed. The switch valve assembly, the anti-freezing water feeding pipe device and the station water supply system are simple and safe in operation and stable and reliable in performance and lowers energy consumption.
Description
Technical field
The utility model relates to the water system field of vehicle, is specifically related to a kind of antifreezing water pipe duct device, the use switch valve assembly on antifreezing water pipe road and the station water system of use antifreezing water pipe duct device.
Background technique
Water source deposit is the important component part of passenger train, is passenger's journey one of requisite primary condition of living, and is also the importance of passenger train human nature service.At present, China railways passenger vehicle adopts water storage box on car to carry out water source deposit more.Because the passenger train section operation time is long, it is short between the stopping time to stand, therefore passenger train, when each bus stop of railway section is stopped, need to carry out water source supply rapidly.
Passenger train bus stop be passenger vehicle carry out water source supplement be by feedwater piping, the water in well to be delivered in the water storage box of passenger vehicle.The length of existing feedwater piping is all longer, and when at low temperature environment, the residual liquid of feedwater piping just likely freezes because do not get rid of in time, thereby feedwater piping is stopped up, and affects the water storage of follow-up train.
For solving the problem of passenger train feedwater piping because freezing and stopping up under low temperature environment, in prior art, attempt to adopt three kinds of modes to solve, specific as follows:
First kind of way: adopt electric-heating belt.I.e. additional electrical heating tape on feedwater piping.But because feedwater piping is flexible pipe, often La Laila goes again, and electric-heating belt is very easy to damaged, and be that anti-personnel's electric shock can only low-voltage power supply, because feedwater piping is longer, the electric energy loss of low-voltage power supply is also larger.
The second way: adopt automatic tube retrieval apparatus.Feedwater piping adopt sebific duct, give passenger vehicle after water injection after, sebific duct is automatically withdrawn in well.But because the softness of sebific duct is along with the variation of ambient temperature changes, in severe cold weather situation, sebific duct hardening, causes closed tube device sebific duct cannot be regained to down-hole in the winter time.
The third mode: adopt electromagnetic valve pressurized air gas circuit, with the residual liquid in pressurized air removing pipeline.But because solenoid valve is had relatively high expectations to working environment, very easily break down, working state is very unstable.And passenger vehicle feedwater is high to the stability requirement of equipment, therefore can not solve well the ice formation issues of feedwater piping under low temperature environment.
In view of the drawback of above-mentioned three kinds of settling modes, existing feedwater piping adopts running water mode to prevent that feedwater piping from freezing, and is feedwater piping and uninterruptedly supplies water under low temperature environment.Because current constantly flow, thereby feedwater piping can not freeze in low temperature environment.But running water mode supplies water incessantly owing to still needing when passenger vehicle does not need water storage, thereby causes a large amount of wastes of water resources.
As from the foregoing, be necessary to provide a kind of residual liquid, the saving water resource that can remove in time in pipeline, and less demanding to working environment, there is antifreezing water pipe duct device stable and reliable for performance, operation and maintenance cost is low.
Model utility content
Goal of the invention of the present utility model has been to provide a kind of residual liquid, the saving water resource that can remove in time in pipeline, and has antifreezing water pipe duct device stable and reliable for performance, operation and maintenance cost is low.
According to an aspect of the present utility model, a kind of switch valve assembly is provided, comprise valve body, described valve body comprises:
Water inlet flow channel, outlet passage and gas flow, be communicated with water source, feedwater piping and compressed gas source respectively; Described gas flow comprises sprue and branch's runner;
Two-way valve core, for making outlet passage optionally be communicated to water inlet flow channel or sprue;
Hollow cavity, is communicated with compressed gas source by branch's runner;
Main air valve, comprises main piston rod, is fixed on first piston and second piston at main piston rod two ends, and first piston is arranged at the pressurized gas ingress in sprue and stops or allow pressurized gas to flow into described sprue with its sealing surface; The second piston is located at and in hollow cavity and by described hollow cavity, is divided into the first cavity and the second cavity and has respectively the inside and outside end face towards the first cavity and the second cavity;
Auxiliary air vale, is arranged at the outlet port of described branch runner, for making branch's runner optionally be communicated to the first cavity or the second cavity;
Reset assembly, is arranged between main air valve and auxiliary air vale and with connecting end and is connected to auxiliary air vale;
Two-way valve core triggers auxiliary air vale and makes branch's runner be communicated to the first cavity and allow pressurized gas to enter the first cavity to act on the interior edge face of the second piston when making outlet passage be communicated to sprue, thereby the pressurized gas that acts on the pressurized gas of the second piston interior edge face and act on first piston acts in the same way promote first piston and the second piston moves and allows Partial shrinkage gas from outlet passage, to flow out away from pressurized gas entrance from compressed air inlet enters sprue;
The second piston mobile triggers reset assembly makes branch's runner be communicated to the second cavity to drive auxiliary air vale to reset and the exterior edge face that allows pressurized gas to enter the second cavity to act on the second piston, when the pressurized gas in the second cavity is greater than pressurized gas in sprue to the active force of first piston to the active force of the second piston exterior edge face, first piston moves until pressurized gas entrance is closed towards pressurized gas entrance.
Wherein, described hollow cavity also comprises the switching chamber being all communicated with outlet, the first cavity and second cavity of branch's runner;
Described auxiliary air vale comprises the 3rd piston being arranged in described switching chamber;
After described auxiliary air vale is triggered by two-way valve core, described the 3rd piston moves between described branch runner exit and the second cavity, with the pressurized gas that stops described branch runner, enter the second cavity, and allow the pressurized gas of described branch runner to enter the first cavity to act on the interior edge face of the second piston;
Described auxiliary air vale drives by reset assembly and after reversing motion is reset, described the 3rd piston moves between described branch runner exit and the first cavity, with the pressurized gas that stops described branch runner, enter the first cavity, and allow the pressurized gas of described branch runner to enter the second cavity to act on the exterior edge face of the second piston.
Further, described auxiliary air vale also comprises the auxiliary piston rod with first end and the second end,
The first end that two-way valve core triggers auxiliary air vale when making outlet passage be communicated to sprue makes branch's runner be communicated to the first cavity and allows pressurized gas to enter the first cavity to act on the interior edge face of the second piston;
The 3rd piston is fixed on the second end of described auxiliary piston rod, and is connected to one end of reset assembly.
Preferably, described reset assembly comprises lever, and described lever is fixed in the second cavity with hinge, comprises free end and the connecting end being connected with described auxiliary air vale, described free end and the both sides of described connecting end in described hinge;
When first piston is closed pressurized gas entrance, the free end of described lever is positioned at exterior edge face one side of the second piston and does not contact with the exterior edge face of the second piston;
In the process that first piston and the second piston move away from pressurized gas entrance, the exterior edge face of the second piston is touched the free end of described lever and is promoted the free end motion of described lever, makes the connecting end of described lever link to promote described auxiliary air vale and resets.
Wherein, when first piston is closed pressurized gas entrance, the area that pressurized air acts on the region on the sealing surface of first piston is less than the area of the exterior edge face of the second piston.
Preferably,
In the first cavity, be provided with: the first spring and valve plug, described valve plug is arranged between the import of the first cavity and the interior edge face of the second piston, to allow pressurized gas to enter on the interior edge face that the first cavity acts on the second piston and to stop that described pressurized gas is counter to flow; The first spring is connected between valve plug and the inwall of the first cavity and in compressive state;
And/or
In the second cavity, be provided with: the second spring, it is connected between the second piston exterior edge face and the inwall of the second cavity and in compressive state.
The internal diameter of described branch runner is less than the internal diameter of described sprue.
Preferably,
The pressure of described pressurized gas is 0.3～0.4 MPa;
Described two-way valve core is spherical or cylindrical spool;
Described first piston allow described pressurized gas enter sprue to the time that stops described pressurized gas to enter described sprue be 8～20 seconds.
According on the other hand of the present utility model, a kind of antifreezing water pipe duct device is also provided, comprising:
The water supply line being communicated with water source;
The steam line being communicated with compressed gas source;
Feedwater piping; And
Aforesaid switch valve assembly; Wherein,
Described water supply line is communicated with the water inlet flow channel of described switch valve assembly; Described steam line is communicated with the gas flow of described switch valve assembly; Described feedwater piping is communicated with the outlet passage of described switch valve assembly.
According to of the present utility model, also provide a kind of station water system more on the one hand, comprised water source, source of compressed air and aforesaid antifreezing water pipe duct device.
As shown from the above technical solution, the switch valve assembly in the utility model can prevent the icing phenomenon in water supply line effectively, and has advantages of saving water resource, safe, stable and reliable for performance and saving energy consumption simple to operate.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described.Apparently, the accompanying drawing in below describing is only embodiments more of the present utility model, for those of ordinary skills, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 shows the structural representation of switch valve assembly;
Fig. 2 a show water source by switch valve assembly to the feedwater piping phase diagram of supplying water;
The internal state figure of switch valve assembly after Fig. 2 b shows and manually closes water source and rotate two-way valve core;
Fig. 2 c shows gas flow on state figure in switch valve assembly;
Fig. 2 d shows first piston in switch valve assembly and stops gas flow on state figure;
Fig. 3 shows the location diagram between the auxiliary piston rod in mechanical interlocking device and auxiliary air vale;
Fig. 4 shows the structural representation of antifreezing water pipe duct device.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, referring to accompanying drawing and enumerate preferred embodiment, the utility model is further described.But, it should be noted that, many details of listing in specification are only used to make reader to have a thorough understanding to one or more aspects of the present utility model, even if do not have these specific details also can realize these aspects of the present utility model.
Inventor of the present utility model observes, and under low temperature environment, the residual liquid that utilizes compressed-air actuated pressure to remove in time in passenger vehicle feedwater piping can prevent that feedwater piping from freezing well, thereby reaches antifreezing effect.But existing pressurized air gas circuit all adopts electromagnetic valve, and because solenoid valve is had relatively high expectations to working environment, and passenger vehicle feedwater piping environment of living in is more severe, thereby adopt the working state of electromagnetic valve pressurized air gas circuit also unstable.Therefore inventor of the present utility model arranges switch valve assembly in feedwater piping, this switch valve assembly utilizes pressurized gas that the residual liquid in feedwater piping is removed in set time, and after set time finishes automatic closes compression gas source, thereby it is not effectively prevent that feedwater piping from freezing, and high, simple to operate safe, stable and reliable for performance to environmental requirement.
According to an aspect of the present utility model, a kind of switch valve assembly is provided, comprise valve body, valve body comprises water inlet flow channel, outlet passage, gas flow, two-way valve core, hollow cavity, main air valve, auxiliary air vale and reset assembly.Wherein,
Water inlet flow channel is communicated with water source, and outlet passage is communicated with feedwater piping, and gas flow is communicated with compressed gas source.
Gas flow comprises sprue and branch's runner.
Two-way valve core, for making outlet passage optionally be communicated to water inlet flow channel or sprue; Preferably, two-way valve core is spherical or cylindrical spool.
Hollow cavity, is communicated with compressed gas source by branch's runner;
Main air valve, comprises main piston rod, is fixed on first piston and second piston at main piston rod two ends, and first piston is arranged at the pressurized gas ingress in sprue and stops or allow flow of the compressed gas to enter sprue with its sealing surface; The second piston is located at and in hollow cavity and by hollow cavity, is divided into the first cavity and the second cavity and has respectively the inside and outside end face towards the first cavity and the second cavity.
Auxiliary air vale, is arranged at the outlet port of branch's runner, for making branch's runner optionally be communicated to the first cavity or the second cavity.
Reset assembly, is arranged between main air valve and auxiliary air vale and with connecting end and is connected to auxiliary air vale;
Two-way valve core triggers auxiliary air vale and makes branch's runner be communicated to the first cavity and allow pressurized gas to enter the first cavity to act on the interior edge face of the second piston when making outlet passage be communicated to sprue, thereby the pressurized gas that acts on the pressurized gas of the second piston interior edge face and act on first piston acts in the same way promote first piston and the second piston moves and allows Partial shrinkage gas from outlet passage, to flow out away from pressurized gas entrance from compressed air inlet enters sprue;
The second piston mobile triggers reset assembly makes branch's runner be communicated to the second cavity to drive auxiliary air vale to reset and the exterior edge face that allows pressurized gas to enter the second cavity to act on the second piston, when the pressurized gas in the second cavity is greater than pressurized gas in sprue to the active force of first piston to the active force of the second piston exterior edge face, first piston moves until pressurized gas entrance is closed towards pressurized gas entrance.
It is 8～20 seconds that first piston allows pressurized gas to enter the time that sprue enters sprue to prevention pressurized gas.
Further, hollow cavity also comprises the switching chamber being all communicated with outlet, the first cavity and second cavity of branch's runner;
Auxiliary air vale comprises the 3rd piston being arranged in switching chamber;
After auxiliary air vale is triggered by two-way valve core, the 3rd piston moves between branch's runner exit and the second cavity, with the pressurized gas that stops branch runner, enter the second cavity, and allow the pressurized gas of branch's runner to enter the first cavity to act on the interior edge face of the second piston;
Auxiliary air vale drives by reset assembly and after reversing motion is reset, the 3rd piston moves between branch's runner exit and the first cavity, with the pressurized gas that stops branch runner, enter the first cavity, and allow the pressurized gas of branch's runner to enter the second cavity to act on the exterior edge face of the second piston.
Further, auxiliary air vale also comprises the auxiliary piston rod with first end and the second end,
The first end that two-way valve core triggers auxiliary air vale when making outlet passage be communicated to sprue makes branch's runner be communicated to the first cavity and allows pressurized gas to enter the first cavity to act on the interior edge face of the second piston;
The 3rd piston is fixed on the second end of auxiliary piston rod, and is connected to one end of reset assembly.
Preferably, the reset assembly in the utility model comprises lever, and lever is fixed in the second cavity with hinge, comprises free end and the connecting end being connected with auxiliary air vale, free end and the connecting end both sides in hinge;
When first piston is closed pressurized gas entrance, the free end of lever is positioned at exterior edge face one side of the second piston and does not contact with the exterior edge face of the second piston;
In the process that first piston and the second piston move away from pressurized gas entrance, the exterior edge face of the second piston is touched the free end of lever and is promoted the free end motion of lever, makes the connecting end of lever link to promote auxiliary air vale and resets.
Wherein, when first piston is closed pressurized gas entrance, the area that pressurized air acts on the region on the sealing surface of first piston is less than the area of the exterior edge face of the second piston.When first piston is closed pressurized gas entrance, the compressed-air actuated pressure that acts on first piston end face is identical with the compressed-air actuated pressure that acts on the second piston exterior edge face, owing to acting on the area in the region on the sealing surface of first piston and be less than the area of the exterior edge face of the second piston, therefore the active force that pressurized air acts on the second piston exterior edge face is greater than the suffered pressure of first piston end face, therefore first piston can be by the pressurized gas inlet seal of sprue, to stop pressurized gas to enter sprue.
Preferably,
In the first cavity, be provided with: the first spring and valve plug, valve plug is arranged between the import of the first cavity and the interior edge face of the second piston, to allow pressurized gas to enter on the interior edge face that the first cavity acts on the second piston and to stop that pressurized gas is counter to flow; The first spring is connected between valve plug and the inwall of the first cavity and in compressive state;
And/or
In the second cavity, be provided with: the second spring, it is connected between the second piston exterior edge face and the inwall of the second cavity and in compressive state.
Preferably,
The internal diameter of branch's runner is less than the internal diameter of sprue.In the utility model, the internal diameter of branch's runner can be maximum inner diameter, minimum diameter, mean inside diameter, entrance internal diameter and outlet internal diameter etc.
Structure and working principle below by preferred embodiment to switch valve assembly are described in detail.
Fig. 1 shows the structural representation of switch valve assembly.As shown in Figure 1, switch valve assembly comprises valve body 10.Valve body 10 comprises that water inlet flow channel 101, outlet passage 102, gas flow 103, spool are spherical or columniform two-way valve core 104, hollow cavity, main air valve, auxiliary air vale and reset assembly.Wherein,
Water inlet flow channel 101, outlet passage 102 and gas flow 103, be respectively used to be communicated with water source, feedwater piping and compressed gas source.
Gas flow 103 comprises branch's runner 105 and sprue.In each embodiment of the present utility model, as preferred version, sprue comprises the horizontal run 131 being communicated with compressed gas source and the vertical run 132 being communicated with two-way valve core 104.The internal diameter of horizontal run 131 is equal to or less than the internal diameter of vertical run 132, and the outlet of horizontal run 131 is communicated with the middle and lower part of vertical run 132.The inlet for pressurised gas of sprue can be thought in the jointing place of horizontal run 131 and vertical run 132.
Two-way valve core 104, comprises two interfaces and is communicated with the bending runner of two interfaces.As preferred embodiment, the bending angle of this bending runner adopts 90 degree.Rotate mutually two-way valve core 104 primary importance and two positions of the second place in valve body 10.Wherein, when primary importance, water inlet flow channel 101 is communicated with outlet passage 102; When the second place, outlet passage 102 is communicated with gas flow 103.By the rotation of two-way valve core 104, and then realize outlet passage 102 and be optionally communicated to water inlet flow channel 101 or gas flow 103.Certainly, the bending angle of the bending runner in the present embodiment in two-way valve core 104 is that 90 degree are exemplary, but not restriction to bending angle, in actual production process, the angle between the bending angle of bending runner is communicated with according to water inlet flow channel 101, outlet passage 102 and gas flow 103 in valve body 10 is determined.
Hollow cavity, is communicated with compressed gas source by branch's runner 105.In embodiment of the present utility model, branch's runner 105 can directly be connected with compressed gas source; As preferred embodiment, branch's runner 105 also can be communicated with the horizontal run 131 in sprue, can reduce like this in the surperficial perforate of valve body 10, improves the intensity of valve body 10.Preferably, the internal diameter of the branch's runner 105 in the present embodiment is less than the internal diameter of horizontal run 131.
Main air valve, comprises main piston rod 106, is fixed on first piston 107 and second piston 108 at main piston rod 106 two ends.Wherein,
First piston 107 is arranged at the pressurized gas ingress in sprue, and stops or allow flow of the compressed gas to enter sprue with its sealing surface.
The second piston 108 is located in hollow cavity and by hollow cavity and is divided into the first cavity 109 and the second cavity 110.Wherein, the second piston is defined as interior edge face towards the end face of the first cavity, towards the end face of the second cavity, is defined as exterior edge face.
Preferably, the interior edge face area of the second piston 108 and the area of exterior edge face equate.The face area of first piston 107 is less than the area of the exterior edge face of the second piston 108.
In each embodiment of the present utility model, as preferred version, first piston 107 is arranged at the jointing place of vertical run 132 and horizontal run 131, and the outlet of horizontal run 131 is the pressurized gas entrance of sprue.The face area of first piston 107 is greater than the area of the outlet of horizontal run 131.The discharge area of horizontal run 131 is the sealing surface area of first piston 107.When gas flow 103 and outlet passage 102 are not communicated with, the end face of first piston 107 and horizontal run export peripheral end face and are affixed, owing to acting on the area in the region on the sealing surface of first piston 107 and be less than the area of the exterior edge face of the second piston, therefore the active force that pressurized air acts on the second piston exterior edge face is greater than the suffered pressure of first piston end face, therefore first piston can be by the pressurized gas inlet seal of sprue, to stop pressurized gas to enter sprue.
In embodiment of the present utility model, hollow cavity preferably adopts L-type cavity.In definition L-type hollow cavity, vertical portion is the second cavity 110, and horizontal component is the first cavity 109.Preferably, the outer race that the second piston 108 is partial to the first cavity 109 parts has seal ring, so that the first cavity 109 seals.
The opening of hollow cavity is also provided with the switching chamber 111 being all communicated with outlet, the first cavity and second cavity of branch's runner.
Auxiliary air vale is arranged at the outlet port of described branch runner 105, for making branch's runner 105 optionally be communicated to the second cavity 110 or the first cavity 109.
In each embodiment of the present utility model, as preferred version, auxiliary air vale can make branch's runner 105 optionally be communicated to the second cavity 110 or the first cavity 109, is specially:
Auxiliary air vale comprises auxiliary piston rod 112, be fixed on the 3rd piston 113 on auxiliary piston rod 112 and the 4th piston 114, the three pistons 113 is arranged at and switches in chamber 111.The first end of auxiliary piston rod 112 extends to two-way valve core 104 places and triggers by the mechanical interlocking device of two-way valve core 104, and the 3rd piston 113 is fixed on the second end of auxiliary piston rod 112, and the second end extends to the second cavity 110 and is connected to one end of reset assembly.Between the 3rd piston 113 and the 4th piston 114, leave gap.
After auxiliary air vale is triggered by two-way valve core 104, the 3rd piston 113 moves between branch's runner exit and the second cavity, with the pressurized gas that stops branch runner, enter the second cavity, and allow the pressurized gas of branch's runner to enter the first cavity to act on the interior edge face of the second piston.
Auxiliary air vale drives by reset assembly and after reversing motion is reset, the 3rd piston moves between branch's runner exit and the first cavity, with the pressurized gas that stops branch runner, enter the first cavity, and allow the pressurized gas of branch's runner to enter the second cavity to act on the exterior edge face of the second piston.
Reset assembly, is arranged between main air valve and auxiliary air vale and with connecting end and is connected to auxiliary air vale.In each embodiment of the present utility model, as preferred version, reset assembly comprises lever 115.Wherein,
Lever 115 is fixed in the second cavity 110 with hinge, and it comprises the connecting end and the free end that are connected with auxiliary air vale.Free end and the connecting end both sides in described hinge.Connecting end is connected with the second end that auxiliary piston rod 112 stretches in the second cavity 110, and its free end is arranged at the left end of the second piston 108 in the second cavity 110.Left end described in the utility model, right-hand member are that relative position in illustrating defines, just for describing conveniently, do not limit the free-ended setting party of lever to.
In the present embodiment, reset assembly employing lever is exemplary; it also can adopt gear or other linkage parts, as long as can realize the parts of the position when promoting auxiliary piston rod auxiliary air vale being got back to do not trigger in the second piston 108 moving process, all falls into protection domain of the present utility model.
Further, in the first cavity 109, be provided with: the first spring 117 and valve plug 118.Wherein,
Valve plug 118 is arranged between the import of the first cavity and the interior edge face of the second piston, to allow pressurized gas to enter on the interior edge face that the first cavity acts on the second piston and to stop that described pressurized gas is counter to flow.
The first spring 117 is connected between valve plug and the inwall of the first cavity and in compressive state.
In the second cavity 110, be provided with: the second spring 116, it is connected between the second piston exterior edge face and the inwall of the second cavity and in compressive state.
Below in conjunction with accompanying drawing, the working principle of switch valve assembly is described in detail.
Fig. 2 a is that water source passes through switch valve assembly to the feedwater piping phase diagram of supplying water.As shown in Figure 2 a, two-way valve core 104 is communicated with water inlet flow channel 101 and outlet passage 102, and water source is to feedwater piping water delivery.Now, auxiliary air vale is not in triggering state.A part in pressurized gas acts on the exterior edge face of first piston 107 through horizontal run outlet, another part in pressurized gas enters the second cavity 110 and acts on the exterior edge face of the second piston 108 through branch's runner 105, because horizontal run 131 is identical with the pressure of pressurized gas in the second cavity 110, and acting on the area in the region on the sealing surface of first piston 107, pressurized gas is less than the second piston 108 exterior edge faces, therefore the second suffered pressure in piston 108 exterior edge faces is greater than the suffered pressure of first piston 107 end faces, therefore the outlet of the first piston 107 shutoff horizontal run 131 in main air valve, it is the pressurized gas entrance of sprue, thereby stop pressurized gas to enter sprue.
Manually closing after water source conveyance conduit (this operation is identical with original feed-water valve action of closing water source conveyance conduit, does not increase operation easier), rotation two-way valve core 104, as Fig. 2 b, outlet passage 102 is communicated with the sprue of gas flow 103.Mechanical interlocking device in two-way valve core 104 triggers auxiliary air vale simultaneously, and auxiliary air vale makes branch's runner 105 be communicated with the first cavity 109, and the second cavity 110 is closed.Gap, the air inlet runner 111 of pressurized air in branch's runner 105 between the 3rd piston 113 and the 4th piston 114 enters the first cavity 109 and acts on the interior edge face of the second piston.First piston 107 is subject to the active force of pressurized gas in horizontal run 131, the second piston 108 is subject to the active force of pressurized gas in the first cavity 109, along with the increase of the first cavity 109 pressurized gas air inflows and pressure, first piston 107 and the suffered active force of the second piston 108 are greater than the active force of pressurized gas to the second piston 108 in the second cavity 110, the first piston 107 in main air valve and the second piston 108 are subject to the effect of active force in the same way to moving away from the direction of pressurized gas entrance, thereby the pressurized gas entrance of sprue is opened, pressurized gas enters feedwater piping through sprue and outlet passage 102, and remove the residual liquid in feedwater piping.
In the moving process of the second piston 108, the free end of lever 115 is triggered in the exterior edge face of the second piston 108, and the free end that promotes lever 115 moves along the moving direction identical with the second piston 108, thereby drives auxiliary air vale to reset, as Fig. 2 c, now still conducting of gas flow.Auxiliary air vale is got back to the position before not triggering, and branch's runner 105 is communicated with the second cavity, the first cavity 109 decompressions; Because the volume of the second cavity is greater than the volume of the first cavity 109, the second cavity 110 need to increase air inflow within a period of time, when the air inflow in the second cavity 110 is increased to pressurized gas the active force of the second piston 108 is greater than to pressurized gas in sprue to the active force of first piston 107, pressurized gas in the second cavity 110 promotes the second piston 108 and moves towards pressurized gas Way in, first piston 107 is corresponding under the interlock of main piston rod 106 to be moved towards pressurized gas Way in, until pressurized gas entrance is closed, as Fig. 2 d.
In the present embodiment, the pressure of pressurized gas that compressed gas source adopts is in 0.3～0.4MPa pressure range.It is 8～20 seconds to the time that stops described pressurized gas to enter described sprue that first piston allows pressurized gas to enter sprue, and the main air valve time-delay closing time is 8～20 seconds.Hence one can see that, and switch valve assembly is by the time difference of filling exhaust velocity and pressure initiation of main air valve the second piston 108 both sides, the function that realizes main air valve time delay and automatically close.
Preferably, pressurized gas air inflow modulating valve can be set on branch's runner 105, by regulating pressurized gas air inflow modulating valve, the time that can realize main air valve time delay.
Fig. 3 shows the location diagram between the auxiliary piston rod in mechanical interlocking device and auxiliary air vale.As shown in Figure 3, mechanical interlocking device is the plectrum structure 301 being arranged in two-way valve core.Manually closing after the water valve of water source conveyance conduit, two-way valve core 90-degree rotation, makes outlet passage be communicated with gas flow, position after the auxiliary piston rod that now plectrum structure 301 is stirred auxiliary air vale moves to auxiliary air vale to trigger.
When water valve is opened, two-way valve core counterrotating, plectrum structure 301 is rotated but can not be made the auxiliary piston rod of auxiliary air vale move, and treats that two-way valve core counterrotating 90 spends, and water source conveyance conduit is opened, and water inlet flow channel is communicated with outlet passage.Auxiliary air vale resets under reset assembly effect.
Through experiment, detect, the switch valve assembly in the present embodiment, can dry up 30～40 meters of residual liquids in feedwater piping in 8 seconds.The every action of this switch valve assembly once consumes 30～50 liters of the pressurized gass of 0.3～0.4MPa, adjusts air compressor power consumption and is less than 0.005kwh/ time, amount to 5 lis of of electricity charge less than/time.
From above technological scheme, the switch valve assembly in the utility model can prevent the water supply line phenomenon of freezing effectively, and has saving water resource, simple to operate safe, stable and reliable for performance and save the plurality of advantages such as energy consumption.
According on the other hand of the present utility model, also provide a kind of antifreezing water pipe duct device that uses above-mentioned switch valve assembly.Fig. 4 shows the structural representation of antifreezing water pipe duct device.As shown in Figure 4, antifreezing water pipe road comprises the water supply line 401 being communicated with water source, the steam line 402 being communicated with compressed gas source, feedwater piping 403 and switch valve assembly 404, wherein,
Concrete structure for switch valve assembly repeats no more herein.
According to one side more of the present utility model, also provide a kind of station water system.This station water system comprises water source, source of compressed air antifreezing water pipe duct device.Utilize antifreezing water pipe duct device, under low temperature environment, station water system can be normally for the vehicle at station supplies water.
Compared with the existing mode of running water in pipeline, the utility model patent can not only be economized on water, and can also be convenient to pipeline inspection and maintenance.
Station described in the utility model, can be train station, bus stop or other vehicle parking places.
The foregoing is only preferred embodiment of the present utility model, not for limiting protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of doing, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a switch valve assembly, is characterized in that, comprises valve body, and described valve body comprises:
Water inlet flow channel, outlet passage and gas flow, be communicated with water source, feedwater piping and compressed gas source respectively; Described gas flow comprises sprue and branch's runner;
Two-way valve core, for making outlet passage optionally be communicated to water inlet flow channel or sprue;
Hollow cavity, is communicated with compressed gas source by branch's runner;
Main air valve, comprises main piston rod, is fixed on first piston and second piston at main piston rod two ends, and first piston is arranged at the pressurized gas ingress in sprue and stops or allow pressurized gas to flow into described sprue with its sealing surface; The second piston is located at and in hollow cavity and by described hollow cavity, is divided into the first cavity and the second cavity and has respectively the inside and outside end face towards the first cavity and the second cavity;
Auxiliary air vale, is arranged at the outlet port of described branch runner, for making branch's runner optionally be communicated to the first cavity or the second cavity;
Reset assembly, is arranged between main air valve and auxiliary air vale and with connecting end and is connected to auxiliary air vale;
Two-way valve core triggers auxiliary air vale and makes branch's runner be communicated to the first cavity and allow pressurized gas to enter the first cavity to act on the interior edge face of the second piston when making outlet passage be communicated to sprue, thereby the pressurized gas that acts on the pressurized gas of the second piston interior edge face and act on first piston acts in the same way promote first piston and the second piston moves and allows Partial shrinkage gas from outlet passage, to flow out away from pressurized gas entrance from compressed air inlet enters sprue;
The second piston mobile triggers reset assembly makes branch's runner be communicated to the second cavity to drive auxiliary air vale to reset and the exterior edge face that allows pressurized gas to enter the second cavity to act on the second piston, when the pressurized gas in the second cavity is greater than pressurized gas in sprue to the active force of first piston to the active force of the second piston exterior edge face, first piston moves until pressurized gas entrance is closed towards pressurized gas entrance.
2. switch valve assembly according to claim 1, is characterized in that, described hollow cavity also comprises the switching chamber being all communicated with outlet, the first cavity and second cavity of branch's runner;
Described auxiliary air vale comprises the 3rd piston being arranged in described switching chamber;
After described auxiliary air vale is triggered by two-way valve core, described the 3rd piston moves between described branch runner exit and the second cavity, with the pressurized gas that stops described branch runner, enter the second cavity, and allow the pressurized gas of described branch runner to enter the first cavity to act on the interior edge face of the second piston;
Described auxiliary air vale drives by reset assembly and after reversing motion is reset, described the 3rd piston moves between described branch runner exit and the first cavity, with the pressurized gas that stops described branch runner, enter the first cavity, and allow the pressurized gas of described branch runner to enter the second cavity to act on the exterior edge face of the second piston.
3. switch valve assembly according to claim 2, is characterized in that, described auxiliary air vale also comprises the auxiliary piston rod with first end and the second end,
The first end that two-way valve core triggers auxiliary air vale when making outlet passage be communicated to sprue makes branch's runner be communicated to the first cavity and allows pressurized gas to enter the first cavity to act on the interior edge face of the second piston;
The 3rd piston is fixed on the second end of described auxiliary piston rod, and is connected to one end of reset assembly.
4. switch valve assembly according to claim 1, it is characterized in that, described reset assembly comprises lever, and described lever is fixed in the second cavity with hinge, comprise free end and the connecting end being connected with described auxiliary air vale, described free end and the both sides of described connecting end in described hinge;
When first piston is closed pressurized gas entrance, the free end of described lever is positioned at exterior edge face one side of the second piston and does not contact with the exterior edge face of the second piston;
In the process that first piston and the second piston move away from pressurized gas entrance, the exterior edge face of the second piston is touched the free end of described lever and is promoted the free end motion of described lever, makes the connecting end of described lever link to promote described auxiliary air vale and resets.
5. switch valve assembly according to claim 1, is characterized in that,
When first piston is closed pressurized gas entrance, the area that pressurized air acts on the region on the sealing surface of first piston is less than the area of the exterior edge face of the second piston.
6. according to the switch valve assembly one of claim 1 to 5 Suo Shu, it is characterized in that,
In the first cavity, be provided with: the first spring and valve plug, described valve plug is arranged between the import of the first cavity and the interior edge face of the second piston, to allow pressurized gas to enter on the interior edge face that the first cavity acts on the second piston and to stop that described pressurized gas is counter to flow; The first spring is connected between valve plug and the inwall of the first cavity and in compressive state;
And/or
In the second cavity, be provided with: the second spring, it is connected between the second piston exterior edge face and the inwall of the second cavity and in compressive state.
7. according to the switch valve assembly one of claim 1 to 5 Suo Shu, it is characterized in that,
The internal diameter of described branch runner is less than the internal diameter of described sprue.
8. according to the switch valve assembly one of claim 1 to 5 Suo Shu, it is characterized in that, comprise at least one following characteristics:
The pressure of described pressurized gas is 0.3～0.4 MPa;
Described two-way valve core is spherical or cylindrical spool;
Described first piston allow described pressurized gas enter sprue to the time that stops described pressurized gas to enter described sprue be 8～20 seconds.
9. an antifreezing water pipe duct device, is characterized in that, comprising:
The water supply line being communicated with water source;
The steam line being communicated with compressed gas source;
Feedwater piping; And
Switch valve assembly in claim 1 to 8 described in any one; Wherein,
Described water supply line is communicated with the water inlet flow channel of described switch valve assembly; Described steam line is communicated with the gas flow of described switch valve assembly; Described feedwater piping is communicated with the outlet passage of described switch valve assembly.
10. a station water system, is characterized in that, comprises the antifreezing water pipe duct device described in water source, source of compressed air and claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613372.2U CN203585436U (en) | 2013-09-30 | 2013-09-30 | Switch valve assembly, anti-freezing water feeding pipe device and station water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613372.2U CN203585436U (en) | 2013-09-30 | 2013-09-30 | Switch valve assembly, anti-freezing water feeding pipe device and station water supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203585436U true CN203585436U (en) | 2014-05-07 |
Family
ID=50583358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320613372.2U Expired - Lifetime CN203585436U (en) | 2013-09-30 | 2013-09-30 | Switch valve assembly, anti-freezing water feeding pipe device and station water supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203585436U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542134A (en) * | 2013-09-30 | 2014-01-29 | 韩志国 | Opening and closing valve assembly, antifreezing water supply pipeline device and station water supply system |
| CN110080342A (en) * | 2019-04-22 | 2019-08-02 | 广州松兴电气股份有限公司 | A kind of safety-type automatic drain system |
-
2013
- 2013-09-30 CN CN201320613372.2U patent/CN203585436U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542134A (en) * | 2013-09-30 | 2014-01-29 | 韩志国 | Opening and closing valve assembly, antifreezing water supply pipeline device and station water supply system |
| CN103542134B (en) * | 2013-09-30 | 2016-01-13 | 韩志国 | Switch valve assembly, antifreezing water pipe duct device and station water system |
| CN110080342A (en) * | 2019-04-22 | 2019-08-02 | 广州松兴电气股份有限公司 | A kind of safety-type automatic drain system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |