CN201050998Y - A compound water meter - Google Patents
A compound water meter Download PDFInfo
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- CN201050998Y CN201050998Y CNU200720108104XU CN200720108104U CN201050998Y CN 201050998 Y CN201050998 Y CN 201050998Y CN U200720108104X U CNU200720108104X U CN U200720108104XU CN 200720108104 U CN200720108104 U CN 200720108104U CN 201050998 Y CN201050998 Y CN 201050998Y
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- valve member
- water inlet
- subtabulation
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Abstract
The utility model relates to a compound water meter which comprises a master meter for detecting the larger flow, a flow conversion valve and a second meter for detecting the smaller flow, wherein the flow conversion valve consists of a valve chest and a perfect switch component, the side of the master meter is provided with a by-pass water outlet which is communicated with the inlet channel, the valve chest at the back of the master meter is communicated with the water outlet of the master meter, the side of the valve chest is provided with the by-pass water inlet which is communicated with the outlet channel, the water inlet of the second meter is communicated with the by-pass water outlet, the water outlet of the second meter is communicated with the by-pass water inlet, the switch component comprises a support, the support is provided with a main flow channel which is communicated with the water outlet of the main meter and the outlet channel, a guiding pin is fixed at the support, the guiding pin is provided with a valve component which moves and guides along the guiding pin and is forced along the direction of shutting down the main flow channel. The utility model is characterized in that the valve component is provided with the control valve block which can move with the valve component and start or stop the by-pass water inlet.
Description
Technical field
The utility model belongs to the technical field of water meter, relates in particular to a kind of compound water metre.It is applicable to places such as office that discontinuous big flow supplies water, residential block, school, hospital, factory rural area, to enlarge the measures range of water meter.
Background technology
In water resource current era in short supply day by day, more and more higher to the water consumption measuring requirement, compound water metre offers the user owing in parallel large-diameter water meter and small diameter watermeter are formed a whole instrument, so can make the user no matter at still water under low discharge of big flow, can both accurately be measured, avoided user that water system only causes singly adorning a large-diameter water meter on the large diameter pipeline under low discharge during water metering inaccurate even can not measure and the loss that brings.
The water measurement of water supply network is normally installed the large-diameter water meter that an entablature directly equals the pipe network diameter on pipeline.The water meter bore is big more, nominal flow rate is big more, and its metering lower limit is that minimum flow and response limit that instrument is got into smooth are also big more, and instrument is insensitive more.Therefore, as user during at the following water of this scope, (this phenomenon often is contingent: for example after factory comes off duty, after school after classes are over, the resident in the sub-district mostly go to work).The water supply trunk line water meter back of huge bore has only several petcocks at water, its water consumption often is lower than the metering lower limit of this large-diameter water meter, therefore this very important and water consumption for years that the duration does not lack, can't be measured by this large-diameter water meter, thereby cause the loss of the ubiquitous suitable great share of water system.
Compound water metre should need at this situation just.As an application number is that the Chinese utility model patent " compound water metre " of CN94102339.7 (notification number is CN1108761Y) has disclosed the structure so a kind of, master meter with the big flow of a measurement, the cross-over valve of one automatism of settling thereafter, the outlet of paying table and arm or by-path of the one measurement low discharge of in arm or by-path, settling, outlet feeds the conversion valve housing from side, simultaneously, this cross-over valve comprises a complete switch module, this switch module is by a supporting mass, the one central guide pins of on this supporting mass, fixing, a removable guiding on guide pins and by the blocking mechanism of a spring along the closing direction application of force, one is equipped with elastic sealing element, and the sealing surface that diameter shrinks between supporting mass and blocking mechanism and a ring cavity composition that holds blocking mechanism, this ring cavity is to open along trip, and have a cylinder district and a step of choking water that is connected a contraction, it is characterized in that: the mainstream channel of this switch module is made up of a loudspeaker import of shrinking along trip, and the end of this import has the major flow sealing surface that the Nominal Width of relative valve obviously dwindles; This blocking mechanism has the marginal portion of a dish type; Its first section is positioned at the cylindrical shape district of ring cavity when the valve off-position; This ring cavity shell is connected with the cylindrical shape district and the following current taper is shunk; Keep a narrow circumferential weld outside between plate edge and the ring cavity housing.
And for example a patent No. is that the Chinese utility model patent " compound water metre " of ZL03229226.0 (notification number is CN2600793Y) has disclosed a kind of such structure, a kind of compound water metre, it comprises big water meter, little water meter and with described big water meter, the flow conversion valve that little water meter is communicated with by by-path mutually, described flow conversion valve comprises a complete switch module, the two ends of described switch module are interconnected with intake tunnel and exhalant canal respectively, its inside of described switch module is by the flexible member that can set pretightning force, described big water meter, little water meter and with described big water meter, the flow conversion valve that little water meter is interconnected all is placed on the same housing; The two ends of described housing are provided with an intake tunnel and exhalant canal respectively; Described intake tunnel and exhalant canal are positioned on the straight line substantially; The two ends of described housing be provided with respectively again one with described intake tunnel and perpendicular low discharge intake tunnel and the low discharge exhalant canal of exhalant canal; Described big water meter and little water meter are placed on the vertical direction of intake tunnel and exhalant canal center line respectively side by side by a blind flange; Between described blind flange and the housing and on the position that the water inlet of big water meter is connected a big table seal pad is set; Described big table seal pad periphery is provided with a stealthy passage; Described stealthy passage is connected with the water inlet of low discharge intake tunnel and described little water meter respectively; Described flow conversion valve is provided with the movable part of the compression shock effect that current produced that passage aisle can be flowed through on it.
As a patent No. is that the Chinese utility model patent " rotor compound water metre " of ZL200320112169.3 (notification number is CN2650071Y) has disclosed the structure so a kind of, the rotor compound water metre, comprise a pair of metering water meter, in a compound watchcase that is provided with water inlet and water delivering orifice, be arranged side by side big table movement and little table movement of a rotary wind type respectively.Space in the described watchcase is separated into big table water channel and little table water channel by the water channel partition wall; Big table movement or little table movement are horizontally placed on respectively in big table water channel or the little table water channel.When discharge hour, little table movement metering; When discharge is big, show movement greatly and little table movement measures simultaneously, thereby solved the applicability problem that water meter changes discharge.Said structure can also effectively guarantee normal, the accurately metering of water meter, has also simplified installation procedure simultaneously, and labour intensity greatly reduces, and has effectively solved the problem that exists in the background technology.
Yet the above-mentioned existing various compound water metres of overall view all only have a by-pass valve control that is loaded on the large-diameter water meter outlet.When the user used low discharge, the current pressure reduction that instrument produced of flowing through was less, and differential pressure is not enough to open this operation valve, and master meter is not worked, do not counted, and the subtabulation work of bypass is only arranged.It is counted exactly and employ the water consumption of family when using under low discharge.But along with user's water consumption strengthens, the differential pressure of current increases and the operation valve of big table back is opened to impel large-diameter water meter be master meter when devoting oneself to work, and small diameter watermeter is still in work.And in order to produce and keep the flow dynamic in order to flow conversion valve is pushed open backward, its working flow must be enough big, and common in nominal flow rate even bigger value category, the flow of little water meter will be bigger also.
Therefore, as long as user's one water, no matter whether large-diameter water meter work, little water meter is always operating at high speed, all the time be in the state that runs up at full capacity, its working environment is abominable, and, its working point often surpasses the nominal flow rate that this water meter allows long-term work, thereby makes the wearing and tearing of bypass subtabulation very fast.The bypass small diameter watermeter that has caused user or manufacturer to have to often change being worn has influenced serviceable life of compound water metre greatly.
In sum, existing various compound water metre also can improve further.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of compound water metre of the water yield from the beginning that can accurately measure at above-mentioned prior art present situation in relatively large journey scope, this compound water metre is under the normal discharge in discharge, subtabulation is not worked, shortened the time that runs up of subtabulation, reduce wearing and tearing, thereby prolonged the serviceable life of compound water metre.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of compound water metre comprises that one measures the master meter of big flow, subtabulation, a flow cross-over valve of a measurement low discharge; Flow conversion valve comprises valve casing, supporter, guide pins and valve member; The master meter sidepiece has the bypass water delivering orifice that communicates with intake tunnel, valve casing places the master meter rear portion and communicates with the water delivering orifice of master meter, the valve casing sidepiece has the bypass water inlet that the exhalant canal with valve casing communicates, the water inlet of subtabulation is communicated with the bypass water delivering orifice, and the water delivering orifice of subtabulation is communicated with the bypass water inlet; Supporter is fixed on the valve casing, has the water delivering orifice of connection master meter and the mainstream channel of exhalant canal on the supporter; Guide pins is positioned at exhalant canal, guide pins one end is fixed on the supporter, described valve member is set on the guide pins and can laterally moves along guide pins, guide pins is provided with and makes valve member have the spring of closing mainstream channel trend all the time, between valve member outer rim and the valve casing inwall spacing is arranged; It is characterized in that described bypass water inlet is positioned at the outside of valve member, valve member is provided with the control valve block of the able to turn on or off bypass water inlet that links with valve member.
For guaranteeing that the control valve block can finely block the bypass water inlet under the state that valve member is opened fully, the inner wall shape of corresponding bypass water inlet tight connecting mutually on the shape of above-mentioned control valve block bottom surface and the valve casing.After the control valve block is blocked the bypass water inlet, effectively guarantee the compactedness of control valve block bottom surface and the combination of valve casing inwall.
Have two connection reinforcements that extend upward and be provided with at interval on the above-mentioned control valve block, each connects reinforcement and links to each other with valve member by bolt respectively.Adopt two connection reinforcements that make progress, and link to each other with valve member, can effectively increase the integrally-built rigidity of control valve block by two bolts.If the rigidity of control valve block is not enough, when the control valve block blocks the bypass water inlet fully or substantially, the control valve block is subjected to easily to swing under the water impact, vibrates even is shifted, can't block the bypass water inlet steadily in the long term, the exhalant canal that stops subtabulation, reduce the flow of subtabulation, can not guarantee the reliability that this compound water metre is enough.Certainly for strengthening the rigidity of control valve block, we also can will link together by the dovetail groove guide frame between the bottom of above-mentioned control valve block and the valve casing inwall.This dovetail groove guide frame is a conventional design, because this structure is relatively complicated, so it does not relate to this scheme in an embodiment.
The water inlet of above-mentioned subtabulation is communicated with the bypass water delivering orifice by first arm, and the water delivering orifice of subtabulation is communicated with the bypass water inlet by second arm.Be communicated with bypass water delivering orifice and bypass water inlet by arm, can make things convenient for us to assemble,
Because the current that enter subtabulation are through turning continuously, include eddy current, deflection and velocity distribution inequality, this will influence the measuring accuracy of subtabulation, therefore we are provided with the tubulose rectifier of grid in the water inlet of above-mentioned subtabulation, thereby eliminated the vortex of current effectively, improve the distribution of current, guaranteed the precision when subtabulation still has the independent verification of single table after in place in compound water metre.
Compared with prior art, advantage of the present utility model is: it is provided with the control valve block of the able to turn on or off bypass water inlet that links with valve member on valve member, like this when the time when the valve member complete opening, the control valve block all or substantially blocks the bypass water inlet, thereby closed the exhalant canal of subtabulation, at this moment, the bypass flow of subtabulation is reduced to very little boundary flow range zero or that still can accurately measure.Such flow can make subtabulation work over a long time safely, thereby has guaranteed that whole compound water metre has long serviceable life.
Description of drawings
Fig. 1 faces structure cut-open view (valve member is in closed condition) under the state for the utility model embodiment;
Fig. 2 overlooks structure cut-open view (valve member is in closed condition) under the state for the utility model embodiment;
Fig. 3 faces structure cut-open view (valve member is in the complete opening state) under the state for the utility model embodiment;
Fig. 4 overlooks structure cut-open view (valve member is in the complete opening state) under the state for the utility model embodiment;
Fig. 5 is the schematic perspective view of control valve block among the utility model embodiment;
Fig. 6 is the structure cut-open view of control valve block among the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1～4, a kind of compound water metre comprises that one measures the master meter 1 of big flow, subtabulation 2, a flow cross-over valve 3 of a measurement low discharge; The master meter 1 general heavy caliber helical vane type water meter of selecting is made of parts such as watchcase 16, air deflector 17, wing wheel 18, gear train 19, counting mechanism 20, blind flange 25, regulators 26.It is an existing structure, can be with reference to existing helical vane type water meter, the groundwork process is: flow through air deflector 17 of current impacts wing wheels 18 and makes its rotation, gear train 19 is delivered to counting mechanism 20 to the revolution of wing wheel 18, because the structural design of wing wheel 18 can guarantee in certain use traffic scope, its revolution is proportional to the water yield that stream passes through, so counting mechanism 20 just can write down the user's accumulative total water consumption by water meter exactly.
Described valve member 7 is provided with the control valve block 9 with the able to turn on or off bypass water inlet 42 of valve member 7 interlocks, the shape of control valve block 9, shown in Fig. 5,6, it is made up of the part face of cylinder 92 and part circular conical surface 93, and the geometric parameter of the face of cylinder 92 and circular conical surface 93 must strict valve casing 4 profiles design by flow conversion valve 3.Certainly the design of control valve block 9 shapes is uncertain, with valve casing 4 on corresponding bypass water inlet 42 places inner wall shape mutually tight connecting be as the criterion.Also have two connection reinforcements 91 that extend upward and be provided with at interval on the control valve block 9, each connects reinforcement 91 and links to each other with valve member 7 by bolt 10 respectively, this bolt 10 is to improve a little on the bolt basis on original valve member 7, promptly these two bolts 10 are that bolt proper extension on original valve member 7 gets final product, and control valve block 9 is locked on the prolongation of this bolt 10 by nut.Bolt 10 prolongation sizes must guarantee to make control valve block 9 to be linked exactly by valve member 7 and put in place, can bar up the bypass water inlet 42 of valve casing 4, promptly satisfy one when valve member 7 blocks mainstream channel 51 fully, at this moment, master meter 1 is not counted, and control valve block 9 leaves or leave substantially fully bypass water inlet 42 fully; When valve member 7 is opened fully, control valve block 9 blocks bypass water inlet 42 fully or substantially, the bypass flow of subtabulation 2 is zero or the boundary flow that still can accurately measure, this moment subtabulation 2 do not count substantially or still exactly the First Astronautic Research Institute for Measurement and Test flow through less discharge.
Principle of work of the present utility model and process are such:
As Fig. 1, shown in 2, when the user side water more after a little while, at this moment, flow by intake tunnel 11 on the master meter 1 is during less than valve member 7 turn-on flow rate, so current flow into by the water inlet 21 that bypass water delivering orifice 12 enters into subtabulation 2 from the intake tunnel 11 of master meter 1, water delivering orifice from subtabulation 2 uses for the user through exhalant canal 41 direct outflows that bypass water inlet 42 enters into valve casing 4 again, subtabulation 2 has a complete circulation path, at this moment, the pressure reduction that two sides, valve member 7 front and back forms is not enough to promote valve member 7 and overcomes horizontal the moving of preload pressure of spring 8 and open mainstream channel 51, master meter 1 can not form complete circulation path, master meter 1 is not worked, and has only subtabulation 2 work to count.
When the user side water consumption increases gradually, at this moment, the pressure reduction that current are imported and exported both sides at subtabulation 2 also increases gradually, this pressure reduction acts directly on the both sides of valve member 7, in case the formed thrust backward of this pressure reduction increases to and equals even when surpassing the tension force of spring 8, valve member 7 is opened, and mainstream channel 51 is opened, and master meter 1 is also with regard to entry into service and counting; Simultaneously, control valve block 9 is with valve member 7 interlocks, control valve block 9 progressively blocks bypass water inlet 42, so, the flow of subtabulation 2 gradually reduces, when the user side water consumption increases to a certain degree, valve member 7 is opened fully, mainstream channel 51 complete openings, at this moment, control valve block 9 all or substantially blocks bypass water inlet 42, the flow of subtabulation 2 is reduced to very little boundary flow range zero or that still can accurately measure, has guaranteed that effectively subtabulation 2 can always not turn round at high speed, has improved the working environment of subtabulation 2, increase the serviceable life of subtabulation 2, and then increased the serviceable life of whole compound water metre.
Shown in Fig. 3,4, when the user side water consumption reduces gradually, at this moment, the pressure reduction that current are imported and exported both sides at subtabulation 2 also reduces gradually, until the formed thrust backward of this pressure reduction during less than the tension force of spring 8, valve member 7 can move towards the direction that mainstream channel 51 is closed under the effect of spring 8 restoring forces gradually, is closed until mainstream channel 51, and master meter 1 shuts down gradually and counts; Simultaneously, control valve block 9 is with valve member 7 interlock, and control valve block 9 is progressively grasped and opened bypass water inlet 42 directions and move, so the flow of subtabulation 2 progressively increases, subtabulation 2 is entry into service and counting gradually, is closed by valve member 7 fully until mainstream channel 51, at this moment, have only subtabulation 2 work.
In sum, the compound water metre that the utility model relates to has only master meter 1 work under the big state of flow; Under the process status that flow is changing, master meter 1 and subtabulation 2 are worked simultaneously, and the flow that just flows through subtabulation 2 remains in the suitable scope; And when having only low discharge, master meter 1 is not worked, and has only subtabulation 2 work.Do not pass through so subtabulation 2 does not have very big flow all the time, effectively prevented the quick wearing and tearing of subtabulation 2.
Claims (9)
1. a compound water metre comprises that one measures the master meter (1) of big flow, subtabulation (2), a flow cross-over valve (3) of a measurement low discharge; Flow conversion valve (3) comprises valve casing (4), supporter (5), guide pins (6) and valve member (7); The bypass water delivering orifice (12) that master meter (1) sidepiece has and the intake tunnel (11) of master meter (1) communicates, valve casing (4) places master meter (1) rear portion and communicates with the water delivering orifice (13) of master meter (1), the bypass water inlet (42) that valve casing (4) sidepiece has and the exhalant canal (41) of valve casing (4) communicates, the water inlet (21) of subtabulation (2) is communicated with bypass water delivering orifice (12), and the water delivering orifice (22) of subtabulation (2) is communicated with bypass water inlet (42); Supporter (5) is fixed on the valve casing (4), has the water delivering orifice (13) of connection master meter (1) and the mainstream channel (51) of exhalant canal (41) on the supporter (5); Guide pins (6) is positioned at exhalant canal (41), guide pins (6) one ends are fixed on the supporter (5), the guide pins (6) that is set in described valve member (7) goes up and can laterally move along guide pins (6), guide pins (6) is provided with the spring (8) that valve member (7) is had close all the time mainstream channel (51) trend, between valve member (7) outer rim and valve casing (4) inwall spacing is arranged; It is characterized in that described bypass water inlet (42) is positioned at the outside of valve member (7), valve member (7) is provided with the control valve block (9) with the able to turn on or off bypass water inlet (42) of valve member (7) interlock.
2. compound water metre according to claim 1, the shape that it is characterized in that described control valve block (9) bottom surface and valve casing (4) are gone up inner wall shape that corresponding bypass water inlet (42) locates tight connecting mutually.
3. compound water metre according to claim 2, it is characterized in that having on the described control valve block (9) two connection reinforcements (91) that extend upward and be provided with at interval, each connects reinforcement (91) and links to each other with valve member (7) by bolt (10) respectively.
4. compound water metre according to claim 2 is characterized in that linking together by the dovetail groove guide frame between the bottom of described control valve block (9) and valve casing (4) inwall.
5. compound water metre according to claim 1 is characterized in that the water inlet (21) of described subtabulation is communicated with bypass water delivering orifice (13) by first arm (23), and the water delivering orifice of subtabulation (22) is communicated with bypass water inlet (42) by second arm (24);
6. according to the described compound water metre of arbitrary claim in the claim 1～5, it is characterized in that the water inlet (21) of described subtabulation (2) locates to be provided with the tubulose rectifier (27) of grid.
7. compound water metre according to claim 1 is characterized in that described guide pins (6) is injection-moulded on the supporter (5).
8. compound water metre according to claim 1, an end that it is characterized in that described guide pins (6) is provided with spring base (61), described spring (8) is set on the guide pins (6), and spring (8) one ends are supported on the spring base (61), and the other end is supported on the valve member (7).
9. compound water metre according to claim 1, it is characterized in that described supporter (5) periphery has the flange (52) of annular, supporter (5) rear portion have one can ccontaining valve member (7) ring cavity (53), described flange (52) is compressed between master meter (1) and the valve casing (4), be provided with sealing ring (14) between flange (21) and the valve casing (4), be provided with O-ring seal (15) between described valve member (7) outer rim and ring cavity (52) inwall, when valve member (7) was closed mainstream channel (52), valve member (7) was positioned at ring cavity (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720108104XU CN201050998Y (en) | 2007-04-10 | 2007-04-10 | A compound water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720108104XU CN201050998Y (en) | 2007-04-10 | 2007-04-10 | A compound water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050998Y true CN201050998Y (en) | 2008-04-23 |
Family
ID=39337488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720108104XU Expired - Fee Related CN201050998Y (en) | 2007-04-10 | 2007-04-10 | A compound water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050998Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837203A (en) * | 2014-03-11 | 2014-06-04 | 宁波水表股份有限公司 | Valve element of combined water meter |
| CN103837202A (en) * | 2014-03-11 | 2014-06-04 | 宁波水表股份有限公司 | Long-life primary-secondary water meter |
-
2007
- 2007-04-10 CN CNU200720108104XU patent/CN201050998Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837203A (en) * | 2014-03-11 | 2014-06-04 | 宁波水表股份有限公司 | Valve element of combined water meter |
| CN103837202A (en) * | 2014-03-11 | 2014-06-04 | 宁波水表股份有限公司 | Long-life primary-secondary water meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20150410 |
|
| EXPY | Termination of patent right or utility model |