CN204852591U - Waterproof hammer air valve - Google Patents
Waterproof hammer air valve Download PDFInfo
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- CN204852591U CN204852591U CN201520383478.7U CN201520383478U CN204852591U CN 204852591 U CN204852591 U CN 204852591U CN 201520383478 U CN201520383478 U CN 201520383478U CN 204852591 U CN204852591 U CN 204852591U
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Abstract
The utility model discloses a waterproof hammer air valve, which comprises the following components: a valve body, valve gap and protection casing, seted up on the valve gap and covered the opening, the protection casing is located on the lid opening of valve gap, the valve opening that is used for the communicating pipe line is offered to the valve body, the valve body inner chamber is equipped with and is used for filling gaseous emission that the water in -process is detained in with the pipeline to external and fill the high speed of closing the valve after water finishes at the pipeline and advance exhaust apparatus at the pipeline, the output that advances exhaust apparatus at a high speed passes through the lid opening intercommunication external world of valve gap, the valve opening intercommunication of valve body is used for the end of the gaseous discharge capacity of limiter tube aline valve body inner chamber to put formula exhaust throttling arrangement, it discharges to external micro - exhaust apparatus to advance at a high speed still to be equipped with in the exhaust apparatus lid opening that the gas that is arranged in mixing the pipeline, remain and/or appear after the high -speed exhaust apparatus of advancing closes the valve passes through the valve gap. Reach the purpose that subtracts the water hammer protection pipeline safety that disappears, blowing when avoiding exhausting at a high speed is stifled, can eliminate to close the valve water hammer.
Description
Technical field
The utility model relates to waterline valve field, and especially, relating to a kind of end puts throttling discharge type water hammer-resistant air valve.
Background technique
In Long-distance Water Transmission Pipeline, the gas overstock in pipe can make the reduction of pipeline water-filling efficiency even be difficult to complete smoothly, therefore needs during pipeline water-filling to utilize Power Hi-speed (air valve) with the gas in drain.Meanwhile, because existing high-speed exhaust valve (air valve) structure function is single, pipeline also needs separately establish micro-exhaust valve, to discharge the air of separating out in water when pipeline is full of; Pipeline also needs also separately establish high-speed suction valve (or vacuum breaker valve), when pipeline termination of pumping, emptying, booster, avoid pipe internal cause to produce negative pressure and the problem such as seal break-off, pipe collapse that causes.
Secondly, after pipeline first water-filling and line evacuation again in water filling process, while needing outlet valve high speed exhaust, also want the speed that effectively can control high speed exhaust, to form the buffer air bag that can receive and cushion and close valve water hammer, thus eliminate the harm that air valve closes valve water hammer.And existing Power Hi-speed (air valve) mainly adopts:
1. direct action formula or ball float manipulation type Power Hi-speed (air valve), when blank pipe water-filling automatically in a large number exhaust or pipeline system emptying time automatic a large amount of air-breathing; Under system is full of and has pressure condition, maintenance closed condition is no longer opened.But, its closure member is easy to be seized on both sides by the arms suddenly blocking vent ports and blow stifled phenomenon or gas blocks up phenomenon by high velocity air in high speed exhaust process, once blow stifled (namely outlet valve (air valve) is closed) closed condition will be in for a long time, need the gas of discharging also again can not open exhaust even if pipeline is full of, and air valve can be caused to close the generation of valve water hammer when blowing stifled generation.
2. composite exhaust valve (air valve), the basis of direct action formula or ball float manipulation type Power Hi-speed (air valve) adds micro-exhaust valve (air valve), though can be vented by trace under system is full of and has pressure condition, but exhaust not to the utmost, gas can not be had namely to arrange, be vented spray water simultaneously, poorly sealed, cavity can not be suppressed to make water hammer up and close valve water hammer.
Model utility content
The utility model provides a kind of water hammer-resistant air valve, to solve existing air valve arrangement function singleness; Valve water hammer is closed in easy generation; Easily blow stifled during high speed exhaust; Trace exhaust can not realize gas and namely arranged, have that exhaust is clean, exhaust time with the technical problem of water spray phenomenon.
The utility model provides a kind of water hammer-resistant air valve, comprise valve body, valve gap and protective housing, valve gap offers cover gab, protective housing is located on the cover gab of valve gap, valve body offers the valve opening for connecting pipeline, body cavity be provided with in pipeline water filling process by the gas discharging that is detained in pipeline to high speed intake and exhaust device that is extraneous and throttle down after pipeline water-filling, the output terminal of high speed intake and exhaust device is communicated with extraneous by the cover gab of valve gap, the valve open communication of valve body is used for the bottom type exhaust restriction means of the gas displacement of limiter tube alignment body cavity, also be provided with in high speed intake and exhaust device for the gas mixing in pipeline, remain and/or separate out being disposed to extraneous micro-venting gas appliance by the cover gab of valve gap after high speed intake and exhaust device throttle down.
Further, high speed intake and exhaust device comprises the casing be fixed on valve gap and/or valve body, the ball float being located at casing inner chamber and gland and can slide up and down for being opened or the slide mass of throttle down along casing inwall on ball float; Looping chamber between casing and valve body, the top of casing offers for the exhaust window by the gas channeling high speed intake and exhaust device output terminal in annular chamber, and the bottom of casing offers end perforate for being communicated with annular chamber and casing inner chamber and STH; Be provided with sealing surface for making ball float balancing weight upward all the time in ball float, ball float is covered in end perforate with the position of balancing weight.
Further, casing offers multiple exhaust window; Multiple exhaust window is along the circumference of casing and/or radial evenly arrangement.
Further, end perforate and/or STH are provided with the rubber axle sleeve for cushioning ball float falling impacts power.
Further, micro-venting gas appliance comprises the perforate being opened in also up/down perforation on slide mass and the micro-valve seat being installed on aperture bottom; The output terminal of micro-valve seat is communicated with perforate, ball float against and the input end of the micro-valve seat of capping.
Further, bottom type exhaust restriction means comprise the valve opening being fixed in valve body throttle tube, be located at throttle tube medial axis on and along throttle tube axial arranged guide rod, be sheathed on guide rod and orifice plug for automatic adjustments of gas discharge capacity can be moved along guide rod axial reciprocating; The first end cylinder open communication valve opening of throttle tube, the second end cylinder open communication pipeline of throttle tube; The outside dimension of orifice plug and the throttle tube cylinder end opening bore of connection valve opening match; Orifice plug offers at least one throttle orifice.
Further, multiple throttle orifice is uniformly distributed along the circumference of orifice plug and/or radial direction, and the gross area of described throttle orifice is the 10%-20% of valve opening radial cross section area.
Further, when orifice plug is in throttle tube inner chamber lowest point, the exhaust passage area that bottom type exhaust restriction means transfers to high speed intake and exhaust device reaches maximum; When orifice plug is in the first end cylinder aperture position of throttle tube and closes first end cylinder opening, orifice plug closes the passage radial cross section area that bottom type exhaust restriction means transfers to 80%-90% in the exhaust passage of high speed intake and exhaust device, and exhaust passage is vented by throttle orifice.
Further, affixed by link between at least two in valve gap, valve body, bottom type exhaust restriction means.
Further, sealing seat and/or seal ring is provided with between valve gap and valve body and/or between bottom type exhaust restriction means and valve body.
The utility model has following beneficial effect:
The utility model water hammer-resistant air valve, when pipeline water-filling, the air retained in discharge conduit.Even if when high speed exhaust, air valve also remains opening state, " blowing stifled " or " gas blocks up " phenomenon can not occur, until water level rises, high speed intake and exhaust device is closed, thus by valve closing.Adopt the composite structure of the high speed intake and exhaust device of bottom type exhaust restriction means and the micro-venting gas appliance of band.It is inner that trace venting gas appliance is integrated in high speed intake and exhaust device, is active in one's movements, and sealing contacts and departs from reliable, compact structure, Perfect in shape and function.Bottom type exhaust restriction means is arranged on the high speed intake and exhaust device ingress of being with micro-arranging device, the adjustment movement of bottom type exhaust restriction means determines according to exhaust pressure reduction and extraction flow, only just action can drop into throttling when being vented pressure reduction and extraction flow reaches a certain setting value.Along with the discharge of gas in pipeline, automatic adjustment movement changes exhaust flow area to bottom type exhaust restriction means, automatically can drop under the air displacement of setting and exhaust pressure reduction and throttling is carried out to high speed exhaust, that avoids high speed intake and exhaust device easily to produce when high speed exhaust blows the gentle stifled phenomenon of stifled phenomenon, eliminate the pass valve water hammer that Power Hi-speed blocks up because blowing stifled and/or gas and produces, and the impact produced because of pipeline high speed exhaust.The setting of bottom type exhaust restriction means, has thoroughly stopped high speed intake and exhaust device and has blown the gentle stifled phenomenon of stifled phenomenon when high speed exhaust.Bottom type exhaust restriction means can not start throttling in the normal exhaust of high speed intake and exhaust device, micro-exhaust and negative inspiratory pressure state, can not cause adverse effect to the normal work of high speed intake and exhaust device.Trace venting gas appliance is integrated in high speed intake and exhaust device inside, is active in one's movements, and sealing contacts and departs from reliable, really can realize the function that namely gas arranged, total head is vented, exhaust thoroughly, is only vented not draining, raising pipeline water delivery efficiency; Pipeline because of termination of pumping, emptying or booster and pressure drop close to negative pressure time, the hydraulic pressure in air valve pocket and water level decline simultaneously, valve opening, and pipeline is sucked air, avoid pipeline to occur vacuum or negative pressure, prevent the pipeline avalanche because negative pressure causes.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the water hammer-resistant air valve suction condition of the utility model preferred embodiment and the structural representation of exhaust condition;
Fig. 2 is the structural representation of the water hammer-resistant air valve high speed exhaust throttle of the utility model preferred embodiment;
Fig. 3 is the water hammer-resistant air valve valve closing of the utility model preferred embodiment and the structural representation of micro-venting gas appliance closed condition;
Fig. 4 is the structural representation of the water hammer-resistant air valve trace exhaust condition of the utility model preferred embodiment.
Marginal data:
1, valve body; 2, valve gap; 3, protective housing; 4, cover gab; 5, high speed intake and exhaust device; 501, casing; 502, ball float; 503, slide mass; 6, bottom type exhaust restriction means; 601, throttle tube; 602, guide rod; 603, orifice plug; 7, micro-venting gas appliance; 701, perforate; 702, micro-valve seat; 8, exhaust window; 9, valve opening; 10, balancing weight; 11, rubber axle sleeve; 12, throttle orifice; 13, link; 14, sealing seat; 15, seal ring.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the utility model can by the multitude of different ways that limits and cover implement.
Fig. 1 is the water hammer-resistant air valve suction condition of the utility model preferred embodiment and the structural representation of exhaust condition; Fig. 2 is the structural representation of the water hammer-resistant air valve high speed exhaust throttle of the utility model preferred embodiment; Fig. 3 is the water hammer-resistant air valve valve closing of the utility model preferred embodiment and the structural representation of micro-venting gas appliance closed condition; Fig. 4 is the structural representation of the water hammer-resistant air valve trace exhaust condition of the utility model preferred embodiment.
As shown in Figure 1, the water hammer-resistant air valve of the present embodiment, comprise valve body 1, valve gap 2 and protective housing 3, valve gap 2 offers cover gab 4, protective housing 3 is located on the cover gab 4 of valve gap 2, valve body 1 offers the valve opening 9 for connecting pipeline, valve body 1 inner chamber be provided with in pipeline water filling process by the gas discharging that is detained in pipeline to high speed intake and exhaust device 5 that is extraneous and throttle down after pipeline water-filling, the output terminal of high speed intake and exhaust device 5 is communicated with the external world by the cover gab 4 of valve gap 2, the valve opening 9 of valve body 1 is communicated with the bottom type exhaust restriction means 6 of the gas displacement being used for limiter tube alignment valve body 1 inner chamber, also be provided with in high speed intake and exhaust device 5 for the gas mixing in pipeline, remain and/or separate out being disposed to extraneous micro-venting gas appliance 7 by the cover gab 4 of valve gap 2 after high speed intake and exhaust device 5 throttle down.Pipeline, still can at least one gas in the gas containing the gas mixed, residual gas, precipitation after exhausting air.The utility model water hammer-resistant air valve, when pipeline water-filling, the air retained in discharge conduit.Even if when high speed exhaust, air valve also remains opening state, " blowing stifled " or " gas blocks up " phenomenon can not occur, until water level rises, high speed intake and exhaust device 5 is closed, thus by valve closing.Adopt the composite structure of the high speed intake and exhaust device 5 of bottom type exhaust restriction means 6 and the micro-venting gas appliance 7 of band.It is inner that trace venting gas appliance 7 is integrated in high speed intake and exhaust device 5, is active in one's movements, and sealing contacts and departs from reliable, compact structure, Perfect in shape and function.Bottom type exhaust restriction means 6 is arranged on high speed intake and exhaust device 5 ingress of being with micro-arranging device, the adjustment movement of bottom type exhaust restriction means 6 determines according to exhaust pressure reduction and extraction flow, only just action can drop into throttling when being vented pressure reduction and extraction flow reaches a certain setting value.Along with the discharge of gas in pipeline, automatic adjustment movement changes exhaust flow area to bottom type exhaust restriction means 6, automatically can drop under the air displacement of setting and exhaust pressure reduction and throttling is carried out to high speed exhaust, that avoids high speed intake and exhaust device 5 easily to produce when high speed exhaust blows the gentle stifled phenomenon of stifled phenomenon, eliminate the pass valve water hammer that Power Hi-speed produces because blowing stifled gentle blocking up, and the impact produced because of pipeline high speed exhaust.The setting of bottom type exhaust restriction means 6, has thoroughly stopped high speed intake and exhaust device 5 and has blown the gentle stifled phenomenon of stifled phenomenon when high speed exhaust.Bottom type exhaust restriction means 6 can not start throttling in the normal exhaust of high speed intake and exhaust device 5, micro-exhaust and negative inspiratory pressure state, can not cause adverse effect to the normal work of high speed intake and exhaust device 5.Trace venting gas appliance 7 is integrated in high speed intake and exhaust device 5 inside, is active in one's movements, and sealing contacts and departs from reliable, really can realize the function that namely gas arranged, total head is vented, exhaust thoroughly, is only vented not draining, raising pipeline water delivery efficiency; Pipeline because of termination of pumping, emptying or booster and pressure drop close to negative pressure time, the hydraulic pressure in valve body 1 chamber and water level decline simultaneously, valve opening, and pipeline is sucked air, avoid pipeline to occur vacuum or negative pressure, prevent the pipeline avalanche because negative pressure causes.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, high speed intake and exhaust device 5 comprises the casing 501 be fixed on valve gap 2 and/or valve body 1, the ball float 502 being located at casing 501 inner chamber and gland on ball float 502 and can to slide up and down for opening or the slide mass 503 of throttle down along casing 501 inwall.Alternatively, ball float 502 can adopt the structure matched with casing 501 inner chamber.Alternatively, ball float 502 can be connected on the internal face of casing 501 by slide block and chute.Alternatively, ball float 502 can be connected on the internal face of casing 501 by roller or ball and slot fit.Alternatively, ball float 502 also can replace with the dynamic sliding motion structure of polygonal slide pad, float plate, downward opening floating basin body Bulk flotation or rolling structure.Looping chamber between casing 501 and valve body 1.The top of casing 501 offers for the exhaust window 8 by gas channeling high speed intake and exhaust device 5 output terminal in annular chamber.The bottom of casing 501 offers end perforate for being communicated with annular chamber and casing 501 inner chamber and STH.Sealing surface for making ball float 502 balancing weight 10 upward is all the time provided with in ball float 502.Ball float 502 is covered in end perforate with the position of balancing weight 10.When pipeline water-filling, the air retained in discharge conduit.Even if when high speed exhaust, air valve also remains opening state, " blowing stifled " phenomenon can not occur, until water level rises to ball float 502 position, held up by ball float 502, and exhaust eloquence can be closed.Pipeline because of termination of pumping, emptying or booster and pressure drop close to negative pressure time, the hydraulic pressure in valve body 1 chamber and water level decline simultaneously, and slide mass 503 and ball float 502 fall, valve opening, pipeline is sucked air, avoids pipeline to occur vacuum or negative pressure, prevents the pipeline avalanche because negative pressure causes.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, casing 501 offers multiple exhaust window 8.Multiple exhaust window 8 is along the circumference of casing 501 and/or radial evenly arrangement.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, end perforate and/or STH are provided with the rubber axle sleeve 11 for cushioning ball float 502 falling impacts power.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, micro-venting gas appliance 7 comprises the perforate 701 being opened in also up/down perforation on slide mass 503 and the micro-valve seat 702 be installed on bottom perforate 701.The output terminal of micro-valve seat 702 is communicated with perforate 701, ball float 502 against and the input end of the micro-valve seat 702 of capping.Alternatively, micro-venting gas appliance 7 comprises the perforate 701 being opened in also up/down perforation on slide mass 503 and the stopple be fixed on ball float 502, and stopple is conflicted and capping perforate 701.Alternatively, micro-venting gas appliance 7 comprises micro-outlet pipe of the cover gab 4 for being communicated with casing 501 inner chamber and valve gap 2, and the inlet end of micro-outlet pipe is fixed between slide mass 503 and ball float 502, and ball float 502 is conflicted and closed the inlet end of micro-outlet pipe.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, the throttle tube 601 that bottom type exhaust restriction means 6 comprises the valve opening 9 being fixed in valve body 1, be located at throttle tube 601 medial axis on and along throttle tube 601 axial arranged guide rod 602, be sheathed on guide rod 602 and orifice plug 603 for automatic adjustments of gas discharge capacity can be moved along guide rod 602 axial reciprocating.The first end cylinder open communication valve opening 9 of throttle tube 601.Second end cylinder open communication pipeline of throttle tube 601.The outside dimension of orifice plug 603 and the throttle tube of connection valve opening 9 601 end opening bores match.Orifice plug 603 offers at least one throttle orifice 12.Alternatively, bottom type exhaust restriction means 6 comprises the throttle tube 601 of the valve opening 9 being fixed in valve body 1 and can move orifice plug 603 for automatic adjustments of gas discharge capacity along throttle tube 601 axial reciprocating, orifice plug 603 is connected on the internal face of throttle tube 601 by slide block and chute, or orifice plug 603 is connected on the internal face of throttle tube 601 by ball and slot rolling, or orifice plug 603 is connected on the internal face of throttle tube 601 by roller and slot rolling.Alternatively, the throttle tube 601 that bottom type exhaust restriction means 6 comprises the valve opening 9 being fixed in valve body 1 and the peviform plug be located in throttle tube 601 inner chamber, the opening down layout of peviform plug, the external diameter of peviform plug is less than the radial dimension of throttle tube 601 and is greater than the axial dimension of throttle tube 601, overturns to prevent peviform plug.Peviform plug utilizes air-flow and water flow impact pressure to move up and down completely.The outside dimension of peviform plug is greater than the both ends open caliber size of throttle tube 601.When ducted water is because of certain reason generation hydraulic jump and/or when surging, the orifice plug 603 of bottom type exhaust restriction means 6 is under hydraulic jump or the percussion of surging, move upward to contact to be formed with sealing seat 14 along guide rod 602 and seal, the throttle orifice 12 only stayed on orifice plug 603 allows water pass through, and slows down hydraulic jump and/or surges to the impact of high speed intake and exhaust device 5.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, multiple throttle orifice 12 is uniformly distributed along the circumference of orifice plug 603 and/or radial direction.The gross area of throttle orifice 12 is the 10%-20% of valve opening 9 radial cross section area.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, when orifice plug 603 is in throttle tube 601 inner chamber lowest point, the exhaust passage area that bottom type exhaust restriction means 6 transfers to high speed intake and exhaust device 5 reaches maximum.When orifice plug 603 is in the first end cylinder aperture position of throttle tube 601 and closes first end cylinder opening, orifice plug 603 closes the passage radial cross section area that bottom type exhaust restriction means 6 transfers to 80%-90% in the exhaust passage of high speed intake and exhaust device 5, and exhaust passage is vented by throttle orifice 12.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, affixed by link 13 between at least two in valve gap 2, valve body 1, bottom type exhaust restriction means 6.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, between valve gap 2 and valve body 1 and/or between bottom type exhaust restriction means 6 and valve body 1, be provided with sealing seat 14 and/or seal ring 15.
During enforcement, provide a kind of water hammer-resistant air assembly, comprise bottom type exhaust restriction means 6 and high speed intake and exhaust device 5 two-part with micro-venting gas appliance 7.
Bottom type exhaust restriction means 6 comprises throttle tube 601, orifice plug 603, guide rod 602, sealing seat 14 and sealing O circle (seal ring 15).Orifice plug 603, under the stream pressure and air displacement effect of setting, can move up and down along guide rod 602 area changing exhaust passage.
Orifice plug 603 is provided with the exhaust port (throttle orifice 12) be evenly arranged, and the gross area of exhaust port (throttle orifice 12) is equivalent to 10% ~ 20% of high speed intake and exhaust device 5 inlet area.When orifice plug 603 is in extreme lower position, the exhaust passage area of bottom type exhaust restriction means 6 reaches maximum; When orifice plug 603 move to top contact with sealing seat 14 time, will close the exhaust passage area of 80% ~ 90%, the throttle orifice 12 leaving orifice plug 603 itself, for exhaust, realizes the function of exhaust throttle by reducing exhaust passage area.
High speed intake and exhaust device 5 with micro-venting gas appliance 7 comprises valve body 1, casing 501, ball float 502, micro-valve seat 702, slide mass 503, line with rubber valve gap (valve gap 2), protective housing 3 and link 13.
Be provided with casing 501 in valve body 1, the STH offered of the end perforate of offering bottom casing 501 and casing 501 lower periphery just water enters and flows out, and valve body 1 outlet end is provided with line with rubber valve gap (valve gap 2) and protective housing 3.Casing 501 is built with ball float 502 and slide mass 503, and micro-valve seat 702 is arranged in slide mass 503.Micro-valve seat 702 contacts with ball float 502 sealing forming micro-valve seat 702, and the upper plane of slide mass 503 contacts with the seal ring of line with rubber valve gap (valve gap 2) sealing forming large relief opening.
Working principle of the present utility model:
1. valve original state (as shown in Figure 1): orifice plug 603 is positioned at bottom throttle tube 601 because of self gravitation, and bottom type exhaust restriction means 6 is in maximum exhaust passage area state.Ball float 502 and slide mass 503 are positioned at bottom casing 501 because conducting oneself with dignity.
2. a large amount of exhaust condition (as shown in Figure 1): when pipeline water-filling is vented, high velocity air is entered by the entrance of bottom type exhaust restriction means 6, and air-flow flows to the entrance of high speed intake and exhaust device 5 by the throttle orifice 12 on the annular space between throttle tube 601 and orifice plug 603 and orifice plug 603.When air displacement and exhaust pressure reduction do not reach the action setting value of orifice plug 603, orifice plug 603 is failure to actuate, air-flow enters valve body 1 inner chamber of high speed intake and exhaust device 5, by the annular space between valve body 1 and casing 501, then entered in air by the exhaust window 8 of casing 501, the cover gab 4 of line with rubber valve gap (valve gap 2), the gap between protective housing 3 and line with rubber valve gap (valve gap 2).Between large amount of expulsion gas period, as long as air displacement and exhaust pressure reduction do not exceed the working value of orifice plug 603, orifice plug 603 would not action, namely bottom type exhaust restriction means 6 can not drop into, and the ball float 502 be loaded in casing 501 and slide mass 503 are also because exhaust airstream is discharged by the annular pass between valve body 1 and casing 501, therefore ball float 502 and slide mass 503 can not be blown afloat the large relief opening of blocking by air-flow, namely this valve can not blow stifled when a large amount of exhaust.
3. throttling exhaust condition (as shown in Figure 2): when air displacement rises, when exhaust pressure reduction increases to the action setting value of orifice plug 603 (cutout water column move toward one another speed accelerate be about to make up before), orifice plug 603 is blown afloat by air-flow, move upward to contact to be formed with sealing seat 14 along guide rod 602 and seal, close the central core of circulation of exhaust, only leave little relief opening on orifice plug 603 (throttle orifice 12) exhaust, now because exhaust passage area reduces (reducing to 10% ~ 20% before action), the air displacement of high speed intake and exhaust device 5 declines, bottom type exhaust restriction means 6 entry end pressure reduction rises, the gas retained in pipeline forms air bag, the water column speed of making up of move toward one another is slowed down, but now still continued by the exhaust of the little relief opening (throttle orifice 12) on orifice plug 603, just air displacement reduces, bottom type exhaust restriction means 6 is not closed, therefore pass valve water hammer can not be caused, bottom type exhaust restriction means 6 buffer air bag that in-line is formed because exhaust passage area reduces can make water hammer up by the cutout water column effectively in deflate pipeline.
4. valve closing sealing state (as shown in Figure 3): when the gas in pipeline is got rid of complete substantially, orifice plug 603 drops to bottom throttle tube 601 because conducting oneself with dignity, and exhaust restriction means gets back to initial position.Water level rises, valve body 1 is entered by throttle tube 601, flood orifice plug 603, when ball float 502 and slide mass 503, ball float 502 and slide mass 503 (ball float 502 and slide mass 503 all light than water, can float in water) will float, the sealing surface of slide mass 503 contacts with the rubber seal face of line with rubber valve gap (valve gap 2) sealing forming high speed porting, ball float 502 top contacts with the sealing surface of micro-valve seat 702 sealing forming micro-valve seat 702, along with the rising of hydraulic pressure, the seal pressure at sealing position increases, valve closing, water and gas are not all discharged by valve, realize sealing.
5. micro-exhaust condition (as shown in Figure 4): the gas after valve closing, mixing in pipeline, remain and/or separate out, will gather in the valve body 1 of the high speed intake and exhaust device 5 being arranged on pipeline local high spot gradually.When the gas gathered increases herein, air pressure rises, when this air pressure is greater than the pressure of water herein, on the one hand slide mass 503 is still withstood and make its sealing surface keep sealing state, the water level decreasing flooding ball float 502 will be made on the other hand, ball float 502 falls open the sealing at micro-valve seat 702 place thereupon, and micro-valve seat 702 starts exhaust.Because the exhaust air pressure be collected at herein will decline, water level will rise, and ball float 502 rises with water level and seals again micro-valve seat 702.So micro-venting gas appliance 7 makes gas can be discharged by micro-valve seat 702, but water can not.The micro-venting gas appliance 7 of this structure has achieved gas and has namely arranged, and drainedly namely closes, and exhaust thoroughly, is only vented the functions such as not draining, can drains the gas occurred in pipeline to greatest extent.
6. negative inspiratory pressure state (as shown in Figure 1): when pipeline is because of termination of pumping, emptying or booster and when there is negative pressure, water level decreasing, external air pressure is greater than pipeline hydraulic pressure, external air pressure acts on slide mass 503, slide mass 503 and ball float 502 are fallen because of water level decreasing, high speed porting is opened, and can suck ambient air in a large number immediately and eliminate pipeline vacuum.Slide mass 503 adopts superhigh molecular weight polyethylene material, sealing surfaces unusual light and Never-rusty, little with the area of contact of rubber, glutinous sticky phenomenon can not occurring because sealing for a long time, therefore can in time, reliably sealing be departed from instantaneously when there is negative pressure.
The utility model water hammer-resistant air valve arrangement comprises the high speed intake and exhaust device 5 of bottom type exhaust restriction means 6 and the micro-arranging device of band.Bottom type exhaust restriction means 6 is arranged on the ingress of the high speed intake and exhaust device 5 being with micro-arranging device, is connected by link 13.Bottom type exhaust restriction means 6 comprises throttle tube 601, orifice plug 603, guide rod 602, sealing seat 14, sealing O circle (seal ring 15).Orifice plug 603 can move up and down in throttle tube 601 along guide rod 602, changes exhaust flow area by motion.In bottom type exhaust restriction means 6, the motion of orifice plug 603 determines according to exhaust pressure reduction and extraction flow, only just action can drop into throttling when being vented pressure reduction and extraction flow reaches a certain setting value.Orifice plug 603 can change setting value when orifice plug 603 drops into throttling action by mounting spring.
The utility model has following beneficial effect:
1. the bottom type exhaust restriction means 6 of high speed intake and exhaust device 5 ingress is arranged on, automatically can drop under the air displacement of setting and exhaust pressure reduction and throttling is carried out to high speed exhaust, that avoids high speed intake and exhaust device 5 easily to produce when high speed exhaust blows stifled phenomenon, eliminates high speed intake and exhaust device 5 because blowing stifled and pass valve water hammer that is that produce.The setting of bottom type exhaust restriction means 6, has thoroughly stopped high speed intake and exhaust device 5 and has blown stifled phenomenon when high speed exhaust.
2. bottom type exhaust restriction means 6 is when high speed exhaust reaches air displacement and the exhaust pressure reduction of regulation; orifice plug 603 automatically rises and blocks most of leaving area; the leaving area leaving 10% ~ 20% continues exhaust; significantly reduce high speed exhaust amount; improve exhaust pressure reduction simultaneously; make pipeline can retain one section of air and form buffer air bag, what this air bag can slow down water column in opposite directions makes speed up, thus plays that deflate cavity makes water hammer up, venting gas appliance closes valve water hammer, the effect of protection pipeline safety.
3. bottom type exhaust restriction means 6 can not drop in high speed intake and exhaust device 5 normal exhaust, trace exhaust and negative inspiratory pressure state, can not cause adverse effect to the normal work of high speed intake and exhaust device 5.
4. when ducted water is because of certain reason generation hydraulic jump and/or when surging, the orifice plug 603 of bottom type exhaust restriction means 6 is under hydraulic jump or the percussion of surging, move upward to contact to be formed with sealing seat 14 along guide rod 602 and seal, the throttle orifice 12 only stayed on orifice plug 603 allows water pass through, and slows down hydraulic jump and/or surges to the impact of high speed intake and exhaust device 5.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a water hammer-resistant air valve, comprises valve body (1), valve gap (2) and protective housing (3),
Described valve gap (2) offers cover gab (4),
Described protective housing (3) is located on the described cover gab (4) of described valve gap (2),
Described valve body (1) offers the valve opening (9) for connecting pipeline,
Described valve body (1) inner chamber be provided with in pipeline water filling process by the gas discharging that is detained in pipeline to high speed intake and exhaust device (5) that is extraneous and throttle down after pipeline water-filling,
The output terminal of described high speed intake and exhaust device (5) is communicated with extraneous by the described cover gab (4) of described valve gap (2),
It is characterized in that,
Be used for the bottom type exhaust restriction means (6) of the gas displacement of valve body (1) inner chamber described in limiter tube alignment described valve opening (9) connection of described valve body (1);
Also be provided with in described high speed intake and exhaust device (5) for the gas mixing in pipeline, remain and/or separate out being disposed to extraneous micro-venting gas appliance (7) by the described cover gab (4) of described valve gap (2) after described high speed intake and exhaust device (5) throttle down.
2. water hammer-resistant air valve according to claim 1, is characterized in that,
It is upper and can slide up and down for opening or the slide mass (503) of throttle down along described casing (501) inwall in described ball float (502) that described high speed intake and exhaust device (5) comprises the casing (501) be fixed on described valve gap (2) and/or described valve body (1), the ball float (502) being located at described casing (501) inner chamber and gland;
Looping chamber between described casing (501) and described valve body (1),
The top of described casing (501) offers for the exhaust window (8) by high speed intake and exhaust device (5) output terminal described in the gas channeling in described annular chamber,
The bottom of described casing (501) offers end perforate for being communicated with described annular chamber and described casing (501) inner chamber and STH;
Sealing surface for making described ball float (502) balancing weight (10) upward is all the time provided with in described ball float (502),
Described ball float (502) is covered in the perforate of the described end with the position of described balancing weight (10).
3. water hammer-resistant air valve according to claim 2, is characterized in that,
Described casing (501) offers multiple exhaust window (8);
Multiple described exhaust window (8) is along the circumference of described casing (501) and/or radial evenly arrangement.
4. water hammer-resistant air valve according to claim 2, is characterized in that,
The perforate of the described end and/or described STH are provided with the rubber axle sleeve (11) for cushioning described ball float (502) falling impacts power.
5. water hammer-resistant air valve according to claim 2, is characterized in that,
Described micro-venting gas appliance (7) comprises the perforate (701) being opened in the upper also up/down perforation of described slide mass (503) and the micro-valve seat (702) being installed on described perforate (701) bottom;
The output terminal of described micro-valve seat (702) is communicated with described perforate (701),
Described ball float (502) against and capping described in the input end of micro-valve seat (702).
6. water hammer-resistant air valve according to claim 1, is characterized in that,
The throttle tube (601) that described bottom type exhaust restriction means (6) comprises the described valve opening (9) being fixed in described valve body (1), be located at described throttle tube (601) medial axis on and along described throttle tube (601) axial arranged guide rod (602), be sheathed on described guide rod (602) and orifice plug (603) for automatic adjustments of gas discharge capacity can be moved along guide rod (602) axial reciprocating;
Valve opening (9) described in the first end cylinder open communication of described throttle tube (601),
Second end cylinder open communication pipeline of described throttle tube (601);
The outside dimension of described orifice plug (603) matches with described throttle tube (601) the cylinder end opening bore being connected described valve opening (9);
Described orifice plug (603) offers at least one throttle orifice (12).
7. water hammer-resistant air valve according to claim 6, is characterized in that,
Multiple described throttle orifice (12) is uniformly distributed along the circumference of described orifice plug (603) and/or radial direction,
The gross area of described throttle orifice (12) is the 10%-20% of described valve opening (9) radial cross section area.
8. water hammer-resistant air valve according to claim 6, is characterized in that,
When described orifice plug (603) is in described throttle tube (601) inner chamber lowest point, the exhaust passage radial cross section area that described bottom type exhaust restriction means (6) transfers to described high speed intake and exhaust device (5) reaches maximum;
When described orifice plug (603) is in the first end cylinder aperture position of described throttle tube (601) and closes described first end cylinder opening, described orifice plug (603) closes the passage radial cross section area that bottom type exhaust restriction means (6) transfers to 80%-90% in the exhaust passage of high speed intake and exhaust device (5), and exhaust passage is by described throttle orifice (12) exhaust.
9. water hammer-resistant air valve according to any one of claim 1 to 8, is characterized in that,
Affixed by link (13) between at least two in described valve gap (2), described valve body (1), described bottom type exhaust restriction means (6).
10. water hammer-resistant air valve according to any one of claim 1 to 8, is characterized in that,
Sealing seat (14) and/or seal ring (15) is provided with between described valve gap (2) and described valve body (1) and/or between described bottom type exhaust restriction means (6) and described valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520383478.7U CN204852591U (en) | 2015-06-05 | 2015-06-05 | Waterproof hammer air valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520383478.7U CN204852591U (en) | 2015-06-05 | 2015-06-05 | Waterproof hammer air valve |
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| CN204852591U true CN204852591U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520383478.7U Active CN204852591U (en) | 2015-06-05 | 2015-06-05 | Waterproof hammer air valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896184A (en) * | 2015-06-05 | 2015-09-09 | 株洲南方阀门股份有限公司 | Water hammer air valve and water hammer gas discharging method during pipeline use |
| CN107781495A (en) * | 2017-12-05 | 2018-03-09 | 博纳斯威阀门股份有限公司 | A kind of combined type air inlet and exhaust valve of water hammer-resistant structure |
| CN110701369A (en) * | 2019-09-03 | 2020-01-17 | 中阀科技(长沙)阀门有限公司 | Air valve |
| CN111720613A (en) * | 2020-06-23 | 2020-09-29 | 中国船舶科学研究中心 | Self-adaptive waterproof ventilation device |
-
2015
- 2015-06-05 CN CN201520383478.7U patent/CN204852591U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896184A (en) * | 2015-06-05 | 2015-09-09 | 株洲南方阀门股份有限公司 | Water hammer air valve and water hammer gas discharging method during pipeline use |
| CN104896184B (en) * | 2015-06-05 | 2018-01-19 | 株洲南方阀门股份有限公司 | Water hammer-resistant method for exhausting during water hammer-resistant air valve and pipeline use |
| CN107781495A (en) * | 2017-12-05 | 2018-03-09 | 博纳斯威阀门股份有限公司 | A kind of combined type air inlet and exhaust valve of water hammer-resistant structure |
| CN110701369A (en) * | 2019-09-03 | 2020-01-17 | 中阀科技(长沙)阀门有限公司 | Air valve |
| CN111720613A (en) * | 2020-06-23 | 2020-09-29 | 中国船舶科学研究中心 | Self-adaptive waterproof ventilation device |
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