CN104776036B - The measuring method of double-impeller water pump rim clearance channeling water amount and device - Google Patents
The measuring method of double-impeller water pump rim clearance channeling water amount and device Download PDFInfo
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- CN104776036B CN104776036B CN201510140116.XA CN201510140116A CN104776036B CN 104776036 B CN104776036 B CN 104776036B CN 201510140116 A CN201510140116 A CN 201510140116A CN 104776036 B CN104776036 B CN 104776036B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides the measuring method of a kind of double-impeller water pump rim clearance channeling water amount, comprises as follows: arrange two pump test loops in the both sides in gap, adds the salt of solubilized in pump test loop wherein; Then by driving the flowing of the current in two pump test loops, the concentration of metal ions in interval certain time sampling detection two pump test loops, according to the variation relation of concentration of metal ions, through calculating, can obtain channeling water flow. The advantage that the present invention has and positively effect be: detection method is simple, can obtain the numerical value of channeling water flow, testing installation need not be carried out big transformation, and salt obtains easily, and concentration of metal ions easily detects, and has easy realization, precision height, feature that cost is low.
Description
Technical field
The invention belongs to engine cooling water pump experimental test technical field, especially relate to measuring method and the device of a kind of double-impeller water pump rim clearance channeling water amount.
Background technology
High/low temperature dual cycle cooling system is a kind of pattern of engine-cooling system, it is necessary to high-temperature water, water at low temperature two pumping sources. Double-impeller water pump is by structurally integrated for two water pumps, and an impeller with two-sided blade coordinates spiral case to form high and low temperature two runners, is respectively the water coolant that two circulation loops provide differing temps, flow, lift. Certainly existing a gap between wheel rim and spiral case, due to the pressure reduction of impeller both sides, single wall pressure is uneven along impeller circumference, and pressure is with operation condition dynamic change, and this will cause the high and low temperature water of impeller both sides to produce very complicated axial channelling. To be controlled this channelling amount in design, to reduce it to the impact of cooling system as far as possible. Owing to this channelling is very complicated, it is difficult to obtain outflow rate by Theoretical Calculation, general test method also cannot measure acquisition. It is thus desirable to provide a kind of double-impeller water pump rim clearance channeling water measuring method and device.
Summary of the invention
For the deficiencies in the prior art, the object one of the present invention is to provide the measuring method of a kind of double-impeller water pump rim clearance channeling water amount.
The technical solution used in the present invention is:
The measuring method of double-impeller water pump rim clearance channeling water amount, comprises as follows:
Two pump test loops are set in the both sides in gap, the pump test loop of adds the salt of solubilized wherein; Then by driving the flowing of the current in two pump test loops, the concentration of metal ions in interval certain time sampling detection two pump test loops, according to the variation relation of concentration of metal ions, through calculating, can obtain channeling water flow.
The object two of the present invention is to provide the measuring apparatus of a kind of double-impeller water pump rim clearance channeling water amount.
The technical solution used in the present invention is:
The measuring apparatus of double-impeller water pump rim clearance channeling water amount, comprise the first pump test loop and the 2nd pump test loop, described first pump test loop is provided with feeding device, being equipped with priming apparatus and sampling unit on described first pump test loop and the 2nd pump test loop, described sampling unit connects measuring apparatus;Water pump connecting drive device in described first pump test loop and the 2nd pump test loop.
Preferably, what store in described feeding device is salt, and described measuring apparatus is ion concentration measurement device.
Preferably, described first pump test loop and the 2nd pump test loop are equipped with under meter, relief valve and water tank.
Preferably, described feeding device is arranged on the export pipeline of water pump in the first pump test loop, and two sampling units are separately positioned in the inlet ductwork in the first pump test loop and the 2nd pump test loop.
The advantage that the present invention has and positively effect be:
Detection method and device are simple, can obtain the numerical value of channeling water flow, testing installation need not be carried out big transformation, and salt obtains easily, and concentration of metal ions easily detects, and have easy realization, precision height, feature that cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
In figure:
1-drive unit, 2-first pump test loop, 3-the 2nd pump test loop, 4-feeding device, 5-sampling unit, 6-measuring apparatus, 7-priming apparatus, 8-under meter, 9-relief valve, 10-water tank.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are elaborated.
The measuring method of double-impeller water pump rim clearance channeling water amount of the present invention, comprises as follows:
Two pump test loops are set in the both sides in gap, pump test loop wherein adds the salt of solubilized; Then by driving the flowing of the current in two pump test loops, the concentration of metal ions in interval certain time sampling detection two pump test loops, according to the variation relation of concentration of metal ions, through calculating, can obtain channeling water flow.
The measuring apparatus of double-impeller water pump rim clearance channeling water amount of the present invention, as shown in Figure 1, comprise the first pump test loop 2 and the 2nd pump test loop 3, described first pump test loop 2 is provided with feeding device 4 and the control valve of its feeding quantity of control, being equipped with priming apparatus 7 and sampling unit 5 on described first pump test loop 2 and the 2nd pump test loop 3, described sampling unit 5 connects measuring apparatus 6; Water pump connecting drive device 1 in described first pump test loop 2 and the 2nd pump test loop 3.
What store in feeding device 4 described in the embodiment of the present invention is salt, and described measuring apparatus 6 is concentration of metal ions measuring apparatus.
First pump test loop 2 described in the embodiment of the present invention and be equipped with under meter 8, relief valve 9 and water tank 10 on the 2nd pump test loop 3, priming apparatus 7 connects water tank 10.
Feeding device 4 described in the embodiment of the present invention is arranged on the export pipeline of water pump in the first pump test loop 2, and two sampling units 5 are separately positioned in the inlet ductwork in the first pump test loop 2 and the 2nd pump test loop 3.
The working process of the measuring apparatus of double-impeller water pump rim clearance channeling water amount of the present invention is:
First calculating or measure the volume of water in the first pump test loop 2 and the 2nd pump test loop 3, priming apparatus 7 is used for two loop water fillings and measures the volume injecting water, then in the first pump test loop 2, adds salt NaCl by feeding device 4; Start drive unit 1 motor, the water pump in two loops is operated continually and steadily in a certain operating mode; Sodium ion can enter another loop along with channelling, causes two loop Na ion concentrations to change; At interval of 5 minutes, measure Na ion concentration with concentration of metal ions measuring apparatus 6, record sample time.When two cover loops in Na ion concentration close to time, stop test. Record the Na ion concentration of two time points in single loop, through calculating, the channeling water flow of tested water pump under this operating mode can be obtained. In actually operating, can Na ion concentration in multiple point in time measurement two loops, calculate channeling water amount respectively and average.
Above one embodiment of the present of invention is described in detail, but described content is only the better embodiment of the present invention, the practical range for limiting the present invention can not be considered to. All equalizations done according to the present patent application scope change and improvement etc., all should still belong within the patent covering scope of the present invention.
Claims (5)
1. the measuring method of double-impeller water pump rim clearance channeling water amount, it is characterised in that comprise as follows:
Two pump test loops are set in the both sides in gap, the pump test loop of adds the salt of solubilized wherein; Then by driving the flowing of the current in two pump test loops, the concentration of metal ions in interval certain time sampling detection two pump test loops, according to the variation relation of concentration of metal ions, through calculating, can obtain channeling water flow.
2. the measuring apparatus of double-impeller water pump rim clearance channeling water amount, it is characterized in that: comprise the first pump test loop (2) and the 2nd pump test loop (3), described first pump test loop (2) is provided with feeding device (4), being equipped with priming apparatus (7) and sampling unit (5) on described first pump test loop (2) and the 2nd pump test loop (3), described sampling unit (5) connects measuring apparatus (6); Water pump connecting drive device (1) in described first pump test loop (2) and the 2nd pump test loop (3).
3. the measuring apparatus of double-impeller water pump rim clearance channeling water amount according to claim 2, it is characterised in that: what store in described feeding device (4) is salt, and described measuring apparatus (6) is ion concentration measurement device.
4. the measuring apparatus of double-impeller water pump rim clearance channeling water amount according to claim 2, it is characterised in that: described first pump test loop (2) and the 2nd pump test loop (3) are equipped with under meter (8), relief valve (9) and water tank (10).
5. according to the measuring apparatus of double-impeller water pump rim clearance channeling water amount according to claim 2, it is characterized in that: described feeding device (4) is arranged on the export pipeline of water pump in the first pump test loop (2), two sampling units (5) are separately positioned in the inlet ductwork in the first pump test loop (2) and the 2nd pump test loop (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140116.XA CN104776036B (en) | 2015-03-27 | 2015-03-27 | The measuring method of double-impeller water pump rim clearance channeling water amount and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140116.XA CN104776036B (en) | 2015-03-27 | 2015-03-27 | The measuring method of double-impeller water pump rim clearance channeling water amount and device |
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| Publication Number | Publication Date |
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| CN104776036A CN104776036A (en) | 2015-07-15 |
| CN104776036B true CN104776036B (en) | 2016-06-15 |
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| CN201510140116.XA Active CN104776036B (en) | 2015-03-27 | 2015-03-27 | The measuring method of double-impeller water pump rim clearance channeling water amount and device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080672A (en) * | 2010-09-18 | 2011-06-01 | 中国兵器工业集团第七○研究所 | Centrifugal cooling water pump |
| CN103148014A (en) * | 2013-04-01 | 2013-06-12 | 中国北方发动机研究所(天津) | Split heat-insulation double-sided water pump impeller |
| CN104234996A (en) * | 2014-06-13 | 2014-12-24 | 台州市德嘉机电科技有限公司 | Measuring method of clearance leakage amount of multi-rotor screw pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008061407B4 (en) * | 2008-12-10 | 2013-09-05 | Mtu Friedrichshafen Gmbh | Water pump for coolant delivery in a low-temperature and a high-temperature circuit |
-
2015
- 2015-03-27 CN CN201510140116.XA patent/CN104776036B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080672A (en) * | 2010-09-18 | 2011-06-01 | 中国兵器工业集团第七○研究所 | Centrifugal cooling water pump |
| CN103148014A (en) * | 2013-04-01 | 2013-06-12 | 中国北方发动机研究所(天津) | Split heat-insulation double-sided water pump impeller |
| CN104234996A (en) * | 2014-06-13 | 2014-12-24 | 台州市德嘉机电科技有限公司 | Measuring method of clearance leakage amount of multi-rotor screw pump |
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| Publication number | Publication date |
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| CN104776036A (en) | 2015-07-15 |
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