CN101476922B - Totally-enclosed open type commutator - Google Patents
Totally-enclosed open type commutator Download PDFInfo
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- CN101476922B CN101476922B CN2009100957110A CN200910095711A CN101476922B CN 101476922 B CN101476922 B CN 101476922B CN 2009100957110 A CN2009100957110 A CN 2009100957110A CN 200910095711 A CN200910095711 A CN 200910095711A CN 101476922 B CN101476922 B CN 101476922B
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Abstract
The invention relates to a full-close type open type commutator. The commutator is characterized in that the commutator comprises a stator and a rotor which has relative rotation with the stator in the stator, wherein the inner surface of the stator and the outer surface of the rotor are in sealing fit by liquid; the stator is provided with a liquid inflow port and at least two liquid outflow ports; the rotor is provided with a connecting passage; when the rotor rotates, the liquid inflow port of the stator can be selectively communicated with one of the liquid outflow ports of the stator by the connecting passage; and when the rotor is in the process of rotating and switching a flow passage, the liquid inflow port of the stator is always positioned in the caliber range of an inlet of the connecting passage. When the commutator is reversed, no phenomenon of sputtering is produced; and simultaneously, flow fields of the commutator before and after reversing are still symmetrical to ensure that two liquid outflow ports have consistent flow. As the inner surface of the stator and the outer surface of the rotor are in sealing fit by liquid, the commutator solves the problem of the overflow of steam when the flow of hot water is measured; and therefore, the commutator is suitable for a standard device of a heat meter.
Description
Technical field
The invention belongs to the technical field of flow standard device, relate in particular to the Totally-enclosed open type commutator that the quick switch fluids of a kind of needs flows to.
Background technology
The purposes of water flow standard apparatus is to detect the accuracy of flow instrument, and wherein commutator is a critical component of water flow standard apparatus, and its quality directly influences the accuracy of measurement of flow.That adopts on water flow standard apparatus at present mainly contains open type commutator and enclosed commutator two classes.
The great advantage of open type commutator is that the flow field to tested fluid can not exert an influence in commutation process, and existing open type commutator has two kinds of implementations: wherein a kind of is the commutation of adopting the motionless realization fluid that swings back and forth by " pants " device of nozzle, because " pants " device is bigger, required thrust is also just bigger, be difficult for like this realizing promoting fast, therefore the time that " pants " device is moved forward and backward is long, and the time that moves forward and backward is impossible in full accord, both time absolute values are big, be that its time difference is also bigger, can bring the error of increasing to the flow standard device; Another is that " pants " device is motionless and realize the commutation of fluid by nozzle left rotation and right rotation certain angle, as a patent No. is a kind of commutator structure the Chinese utility model patent " fluid commutator " of ZL94238901.8 (notification number is CN2195643Y) has disclosed, its shortcoming is that flow rate of fluid is non-constant behind nozzle, fluid has shock effect to " pants " device, in fact existing various open type commutator all has all be attended by the liquid flow impact phenomenon of fluid to " pants " device when switch fluids flows to, very easily produce splashing of fluid when especially detecting big flow with existing open type commutator, though therefore make existing open type commutator that certain advantage is arranged, but influence the accuracy of flow detection, so existing open type commutator is usually used on the less flow standard device of flow.
The enclosed commutator generally commutates by piston cylinder operator, its biggest advantage is can not produce to splash, as a patent No. is a kind of commutator so the Chinese utility model patent " commutator of fluid flow useful test device " of ZL200620093386.6 (notification number is CN200958959Y) has disclosed, by fixed head, setting is connected the master cylinder on the fixed head, the master cylinder solenoid directional control valve, countercylinder, the countercylinder solenoid directional control valve, the photoelectric sensing apparatus, water inlet pipe, outside water inlet pipe, be rotatably connected to sleeve, on sleeve, be connected with faucet, the piston rod of master cylinder is fixedlyed connected with the cylinder cap of countercylinder, be provided with the countercylinder sliding support on fixed head, the piston rod of countercylinder and the connecting rod connecting band moving sleeve on the sleeve rotate and constitute.The shortcoming of enclosed commutator is because the liquid resistance at the two ends of piston closed type structure is difficult to do consistently, so can produce the inconsistent situation of flow of two ends when commutation, has influenced the flow field, and then has influenced the accuracy of detection of flow.
Currently also will adopt flow instrument to measure for energy-saving and cost-reducing to heating system, the device that calorimeter is measured has been run into has a large amount of hot vapour to disperse out in testing process, and this also is the part of calorific value.The commutator of using on the present various water flow standard apparatus all can't satisfy the requirement of the device that calorimeter is measured.The open type commutator has a large amount of hot vapour and overflows before " pants " device, take away energy loss, and hot vapour is the another kind of stastus format of water, thus hot vapour overflow the loss that promptly can take away the hot water quality, influence measuring accuracy.Because calorimeter standard set-up general requirements is all little, the flow asymmetry of enclosed commutator directly influences flow measurement, so generally also do not adopt.
Summary of the invention
Technical matters to be solved by this invention be provide at above-mentioned prior art present situation a kind of in commutation process fluid can not splash, guarantee simultaneously that before and after the commutation flow field of convection cell is consistent makes the Totally-enclosed open type commutator of flow unanimity of each fluid flow export, this commutator also is particularly suitable for using in the device that calorimeter is measured in addition.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of Totally-enclosed open type commutator, it is characterized in that: this commutator comprises a stator and can be in this stator and its rotor in relative rotation, wherein, described inner surface of stator cooperates with the outside surface liquid sealing of described rotor, described stator has a flow of liquid inlet and at least two liquid flowing outlets, has interface channel on the described rotor, this interface channel selectively is communicated with the flow of liquid inlet on this stator with one of them liquid flowing outlet on the stator when rotor rotation, and rotor is in rotating the process of switching runner, and the flow of liquid inlet is positioned at the bore scope of the import of interface channel all the time on the stator.
Liquid flowing outlet on the said stator generally has only two, is respectively first liquid flowing outlet and second liquid flowing outlet, and this first liquid flowing outlet and second liquid flowing outlet are good with the both sides that are symmetricly set on the stator axis.
The bore of the outlet on the above-mentioned interface channel is less than the bore of the import on the interface channel, and the bore of the outlet of interface channel is equal to or less than the bore of liquid flowing outlet simultaneously.Rotor is communicated with the flow of liquid inlet in rotation process all the time like this, and the bore of connection road upper inlet is equal to or less than the bore of liquid flowing outlet, can further prevent the generation of water hammer, guarantees the stability of fluid field.
Above-mentioned rotor and stator integral body all are cylindric, wherein, stator is formed by the cylindrical sleeve of both ends open and with the circular end cap that the sleeve both ends open closes, be convenient to assemble this commutator like this, the driving shaft of described two ends of rotor passes the circular end cap of stator and covers by the round nose of Bearing Installation at stator, can drive the commutation that the driving shaft rotation realizes fluid by external drive unit like this.Certainly rotor and stator monnolithic case also can be spherical.
Compared with prior art, the invention has the advantages that: commutator is made up of rotor and stator, has interface channel on the rotor, so rotor is equivalent to the function of " pants " device, and the rotor structure volume is little, and is in light weight, can promote the rotor rotation soon with less power, rotor is at the time basically identical that moves forward and backward, and both its time differences are little, reduces the error of bringing to the flow standard device; Also have when rotor is rotating and switch in the process of runner, the flow of liquid inlet is positioned at the bore scope of interface channel upper outlet all the time on the stator, therefore this commutator is when commutation, the liquid flow impact phenomenon of fluid to rotor can not appear, both this commutator can not produce splash phenomena, the flow field of commutator before and after commutation is still symmetrical simultaneously, guarantees the flow unanimity of two fluid flow exports.Because inner surface of stator cooperates with the outside surface liquid sealing of described rotor, solved the excessive of when measurement hot water flow steam, so this commutator is suitable for the calorimeter standard set-up.
Description of drawings
Fig. 1 is the structural representation one of the embodiment of the invention;
Fig. 2 is the structural representation two (commutation back) of the embodiment of the invention;
Fig. 3 is that the A-A of Fig. 2 is to cut-open view.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Be a preferred embodiment of the present invention as shown in Figure 1, 2, 3.
A kind of Totally-enclosed open type commutator, this commutator comprises a stator 1 and can be in this stator 1 and its rotor 2 in relative rotation, rotor 2 and stator 1 integral body all are cylindric, stator 1 is formed by the cylindrical sleeve 11 of both ends open and with the circular end cap 12 that sleeve 11 both ends opens close, the driving shaft 7 at rotor 2 two ends passes stator respective circular end cap 12 and is installed in by bearing 8 on the circular end cap 12 of stator 1, as shown in Figure 3.
The inside surface of stator 1 cooperates with the outside surface liquid sealing of described rotor 2, liquid sealing cooperates and to be meant that stator 1 and rotor 2 processing quality of fits guarantee that liquid can not leak out between the outside surface of the inside surface of stator 1 and rotor 2, stator 1 has 3 and two liquid flowing outlets 4,5 of a flow of liquid inlet, be respectively first liquid flowing outlet 4 and second liquid flowing outlet 5, this first liquid flowing outlet 4 and second liquid flowing outlet 5 are symmetricly set on the both sides of stator 1 axis.
Has interface channel 6 on the described rotor 2, interface channel 6 selectively is communicated with the flow of liquid inlet 3 on this stator 1 with first liquid flowing outlet 4 or second liquid flowing outlet 5 on the stator 1 when rotor 2 rotates, the bore of the outlet on the interface channel 6 is less than the bore of the import on the interface channel 6, and the inwall of interface channel 6 is smooth not to bend, and guarantees the stability in flow field.And rotor 2 is in rotating the process of switching runner, and flow of liquid inlet 3 is positioned at the bore scope of the import of interface channel 6 all the time on the stator, and the bore of interface channel 6 upper inlets is equal to or less than the bore of first and second liquid flowing outlet 4,5 simultaneously.
This commutator only need drive driving shaft 7 deflections by the external drive structure when commutation, and then drive rotor 2 deflections, because flow of liquid inlet 3 is positioned at the bore scope of interface channel 6 upper outlets all the time on the stator 1, so deflection interface channel 6 upper outlets by rotor 2 selectively are communicated with first liquid flowing outlet 4 or second liquid flowing outlet 5, realize changing the purpose that flows to.Process and existing commutator with this commutator measurement flow rate are basic identical, no longer launch to elaborate at this.
Claims (3)
1. Totally-enclosed open type commutator, it is characterized in that: this commutator comprises a stator (1) and can be in this stator (1) and its rotor (2) in relative rotation, wherein, the inside surface of described stator (1) cooperates with the outside surface liquid sealing of described rotor (2), described stator (1) has a flow of liquid inlet (3) and at least two liquid flowing outlets (4,5), has interface channel (6) on the described rotor (2), when rotor (2) rotates interface channel (6) make on this stator (1) flow of liquid inlet (3) selectively with stator (1) on one of them liquid flowing outlet (4,5) be communicated with, and rotor (2) is in rotating the process of switching runner, and stator (1) is gone up the bore scope that flow of liquid inlet (3) is positioned at the import of interface channel (6) all the time; Liquid flowing outlet on the described stator (1) (4,5) has two, is respectively first liquid flowing outlet (4) and second liquid flowing outlet (5), and this first liquid flowing outlet (4) and second liquid flowing outlet (5) are symmetricly set on the both sides of stator (1) axis.
2. Totally-enclosed open type commutator according to claim 1, it is characterized in that: the bore of the outlet on the described interface channel (6) is less than the bore of the import on the interface channel (6), and the bore of the outlet of interface channel (6) is equal to or less than the bore of liquid flowing outlet (4,5) simultaneously.
3. Totally-enclosed open type commutator according to claim 1 and 2, it is characterized in that: described rotor (2) and stator (1) integral body all are cylindric, wherein, stator (1) is formed by the cylindrical sleeve (11) of both ends open and with the circular end cap (12) that sleeve (11) both ends open closes, and the driving shaft (7) at described rotor (2) two ends passes the circular end cap (12) of stator (1) and is installed on the circular end cap (12) of stator (1) by bearing (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100957110A CN101476922B (en) | 2009-01-16 | 2009-01-16 | Totally-enclosed open type commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100957110A CN101476922B (en) | 2009-01-16 | 2009-01-16 | Totally-enclosed open type commutator |
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| Publication Number | Publication Date |
|---|---|
| CN101476922A CN101476922A (en) | 2009-07-08 |
| CN101476922B true CN101476922B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100957110A Active CN101476922B (en) | 2009-01-16 | 2009-01-16 | Totally-enclosed open type commutator |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331283A (en) * | 2011-08-08 | 2012-01-25 | 天津大学 | Swing splitter plate type commutator driven by stepping motor |
| CN103438964B (en) * | 2013-09-09 | 2016-01-20 | 中国计量科学研究院 | A kind of hermetic type open commutator |
| CN105698892A (en) * | 2016-02-05 | 2016-06-22 | 山东大学 | Liquid volume measuring device for penetration test and working method thereof |
| CN109209825B (en) * | 2018-10-16 | 2020-05-05 | 山东青耕电气有限公司 | Mechanical liquid continuous reversing device |
| CN110854467B (en) * | 2019-11-15 | 2021-07-06 | 华霆（合肥）动力技术有限公司 | Reciprocating structure and reciprocating control system |
| CN114223508A (en) * | 2022-02-10 | 2022-03-25 | 山东中科先进技术研究院有限公司 | Jet oscillator water dropper and drip irrigation system |
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| CN101476922A (en) | 2009-07-08 |
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Owner name: YUYAO YINHUAN FLOWMETER CO., LTD. Free format text: FORMER OWNER: ZHU JIASHUN Effective date: 20110216 |
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Free format text: CORRECT: ADDRESS; FROM: 315400 YUYAO YINHUAN FLOWMETER CO., LTD., NO. 1, CAIHONG ROAD, NORTHEASTERNINDUSTRIAL PARK, YUYAO CITY, ZHEJIANG PROVINCE TO: 315400 NO. 1, CAIHONG ROAD, DONGBEI INDUSTRIAL PARK, YUYAO CITY, ZHEJIANG PROVINCE |
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Effective date of registration: 20110216 Address after: 315400 No. 1, Rainbow Road, Northeast Industrial Park, Zhejiang, Yuyao Applicant after: Yuyao Yinhuan Flowmeter Co., Ltd. Address before: Rainbow Road 315400 Zhejiang city of Yuyao Province in Northeast Industrial Park, No. 1 Yuyao Yinhuan flowmeter Co. Ltd. Applicant before: Zhu Jiashun |
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