CN102980772B - Pressure-maintaining fluid-infusion device of cooling fluid thermostatic device - Google Patents
Pressure-maintaining fluid-infusion device of cooling fluid thermostatic device Download PDFInfo
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- CN102980772B CN102980772B CN201210469909.2A CN201210469909A CN102980772B CN 102980772 B CN102980772 B CN 102980772B CN 201210469909 A CN201210469909 A CN 201210469909A CN 102980772 B CN102980772 B CN 102980772B
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Abstract
The invention relates to a pressure-maintaining fluid-infusion device of a cooling fluid thermostatic device. The technical scheme includes that the pressure-maintaining fluid-infusion device of the cooling fluid thermostatic device comprises a casing, wherein a liquid storage cavity is arranged inside the casing, an air inlet and an air outlet are arranged on the casing, the gas space at the top of the liquid storage cavity is communicated with an external high-pressure gas source during usage through the air inlet, the gas space at the top of the liquid storage cavity is communicated with the external space of the casing, the air outlet is connected with a relief valve which is opened for decompression after the pressure inside the liquid storage cavity exceeds a set value, and a thermostatic device connecting port through which the liquid storage cavity is communicated with corresponding liquid pipelines of the cooling fluid thermostatic device during usage is arranged on the casing. Compared with the prior art, the pressure-maintaining fluid-infusion device of the cooling fluid thermostatic device can provide stable pressure to the cooling fluid thermostatic device, guarantees sufficient liquid source supply and has the pressure-maintaining fluid-infusion function.
Description
Technical field
The present invention relates to cooling liquid constant thermal apparatus pressurize liquid replenisher.
Background technology
Cooling liquid constant thermal apparatus is one of test condition safeguards system of vehicular engine test indispensability.According to technical requirement in motor car engine method for testing performance " GB18297-2001 " and motor car engine reliability test method " GB/T19055-2003 ", for ensureing the accuracy that engine parameter measures, when entering engine to process of the test machine oil, liquid coolant, temperature must be carried out constant, truly to measure the various performance parameters of engine within the limits prescribed.Because engine itself does not possess the constant control function of each temperature, so can only be supported by external condition safeguards system, assist and ensure that it specifically needs.
Cooling liquid constant thermal apparatus in the market can meet above two kinds of government test standards substantially, but along with the testing requirements that engine research, development department is more and more harsher, particularly the engine of world's advanced technology is introduced and research and development, emission standard is more and more stricter, test specification is constantly expanded, propose more and more accurate requirement to test specification, especially have high requirement to the accurate control of coolant pressure, the existing cooling liquid constant thermal apparatus in market does not possess pressurize voltage stabilizing function substantially.
Summary of the invention
The object of this invention is to provide a kind of cooling liquid constant thermal apparatus pressurize liquid replenisher with pressurize liquid replenishing function.
The technical solution adopted in the present invention is: cooling liquid constant thermal apparatus pressurize liquid replenisher, comprise the housing that inside is provided with liquid storage cylinder, the air intake opening that the gas space at liquid storage cylinder top is communicated with outside high-pressure air source when being provided with use by described housing, the exhausr port be communicated with the space outerpace of housing for the gas space at liquid storage cylinder top, the pressure described exhausr port is connected with in liquid storage cylinder opens the blowdown valve of pressure release after exceeding setting value, the thermostat connector be communicated with the corresponding liquid line of cooling liquid constant thermal apparatus by liquid storage cylinder when described housing being also provided with use.
In technique scheme, air intake opening can to injecting compressed air in liquid storage cylinder, thus be that cooling liquid constant thermal apparatus sets up suitable system pressure by thermostat connector, and blowdown valve can fluid injection or air pressure is too high cause hypertonia in liquid storage cylinder time pressure release, ensure the stable of system pressure.Compared with prior art, this cooling liquid constant thermal apparatus pressurize liquid replenisher can provide steady pressure for cooling liquid constant thermal apparatus and ensure that sufficient liquid source is supplied, and has pressurize liquid replenishing function.
Described housing is box housing, comprises lower box and upper box lid, described lower box upper opening, described upper box lid compress be located at described lower box opening on and sealed by O-ring seal with lower box.Housing adopts the removable separate form of lower box and upper box lid, and can take apart easily, be convenient to maintenance and inspection and cleaning, O-ring seal can ensure the impermeability of housing.
Described exhausr port and air intake opening are all arranged on described upper box lid.This structure is convenient to the processing of exhausr port and air intake opening and the installation of follow-up corresponding parts.
The liquid level sensor detecting residual liquid quantity in liquid storage cylinder is provided with in described housing.By arranging liquid level sensor, residual liquid quantity in liquid storage cylinder can be detected, adaptive control device can be connected during use and realize automatic liquid supply.
Described housing is provided with the liquid level gauge for showing residual liquid quantity in cooling liquid constant thermal apparatus pressurize liquid replenisher.Liquid level can be observed easily.
Described housing bottom is provided with for the leakage fluid dram outside the liquid discharge housing in liquid storage cylinder, and described leakage fluid dram is connected with the tapping valve controlling leakage fluid dram and open and close.When needing maintaining or do not use for a long time, by tapping valve, discharging of waste liquid can be fallen.
Described air intake opening is connected with only at the retaining valve to conducting during liquid storage cylinder air inlet.Arrange retaining valve can avoid because when the accidentalia such as hydraulic valve inefficacy, make-up valve inefficacy cause liquid storage cavity pressure excessive, liquid or back flow of gas cause connection device to damage.
Described air intake opening is connected with the pressure regulation filtrator of gas and the adjustment gaseous tension provided for filtration high pressure source of the gas.High pressure filter can provide pressure stability and clean pressure gas for cooling liquid constant thermal apparatus pressurize liquid replenisher.
Described blowdown valve has the pressure regulation device for regulating vent pressure setting value, can arrange different vent pressure according to actual needs, easy to use.
Accompanying drawing explanation
Fig. 1: the front view of an embodiment of cooling liquid constant thermal apparatus pressurize liquid replenisher of the present invention;
The right view of Fig. 2: Fig. 1;
The vertical view of Fig. 3: Fig. 1;
Fig. 4: the structural representation of the blowdown valve of cooling liquid constant thermal apparatus pressurize liquid replenisher of the present invention.
In figure, the name of each Reference numeral is called: 1 housing, 11 lower boxes, 12 upper box lids, 13 O-ring seals, 14 bolts, 2 retaining valves, 3 pressure regulation filtrators, 31 high-pressure air source connecting pipes, 4 thermostat connecting pipes, 5 tapping valves, 6 blowdown valves, 61 holders, 62 relief fittingss, 63 pressure regulation needle-valves, 64 springs, 65 glands, 66 setting nuts, 7 liquid level sensors, 8 liquid level gauges.
Embodiment
An embodiment of cooling liquid constant thermal apparatus pressurize liquid replenisher of the present invention, as shown in Fig. 1 ~ Fig. 4, mainly comprises housing 1, pressure regulation filtrator 3, blowdown valve 6, liquid level sensor 7 and liquid level gauge 8.
Its middle shell 1 is box housing, comprises lower box 11 and upper box lid 12, lower box 11 upper opening, the opening that upper box lid 12 is located at described lower box 11 is compressed by bolt 14, surrounds the liquid storage cylinder of cooling liquid constant thermal apparatus pressurize liquid replenisher.In addition, be provided with O-ring seal 13 between lower box 11 and upper box lid 12 to seal.The thermostat connector be communicated with the corresponding liquid line of cooling liquid constant thermal apparatus by liquid storage cylinder when the lower box 11 of housing 1 being also provided with use, thermostat connector is connected with thermostat connecting pipe 4.
The upper box lid 12 of housing 1 is provided with the air intake opening and exhausr port that communicate with the gas space above liquid storage cylinder.Air intake opening is connected with retaining valve 2, then is communicated with pressure regulation filtrator 3 by retaining valve 2, the import of pressure regulation filtrator 3 is connected with high-pressure air source by high-pressure air source connecting pipe 31.The wherein retaining valve 2 only conducting when the gas space air inlet above liquid storage cylinder.Exhausr port is directly connected with a homemade blowdown valve 6.The structure of this blowdown valve 6 as shown in Figure 4, forms primarily of holder, spring 64, pressure regulation needle-valve 63, gland 65, setting nut 66 and relief fittings 62.Holder profile is cylindric, is welded on upper box lid 12, porose in the middle of it, is connected with the gas space of liquid storage cylinder inside.Be provided with perforate above holder, leading with pressure regulation needle-valve 63 coordinates, mating surface finishing, to reduce friction as far as possible, makes pressure regulation needle-valve 63 flexible movements.Counterbore is opened at pressure regulation needle-valve 63 center, is equipped with spring 64 in counterbore, pushes up pressure at use gland 65.Setting nut 66 is pressure regulation devices, with gland 65 for being threaded, is threaded into the degree of depth by adjustment setting nut 66, can the decrement of regulating spring 64, applies power to metering pin valve; When liquid storage cylinder internal pressure is greater than the pressure that pressure regulation needle-valve 63 is applied on holder, pressure is released through relief fittings 62 by the gap between holder and pressure regulation needle-valve 63, liquid storage cylinder internal pressure is declined, when liquid storage cylinder internal pressure is replied normally, metering pin valve and holder reseal, and play pressure maintaining effect.Certainly, pressure regulation device also can adopt other form, such as traditional Weight type pressure regulation device.
Liquid level sensor 7 is provided with, for detecting residual liquid quantity in liquid storage cylinder in housing 1.Liquid level sensor 7 is connected with the controller in cooling liquid constant thermal apparatus, and in use, this controller can open according to the make-up valve of the liquid level signal controlled cooling model liquid thermostat detected of liquid level sensor 7 or cut out.Described housing 1 outside is also provided with the liquid level gauge 8 for showing residual liquid quantity in cooling liquid constant thermal apparatus pressurize liquid replenisher, the liquid level that display directly perceived is inner, convenient observation.
In addition, be provided with bottom described housing 1 for the leakage fluid dram outside the liquid discharge housing in liquid storage cylinder, described leakage fluid dram is connected with tapping valve 5.In the present embodiment, this tapping valve 5 adopts ball valve, and sealing is reliable.
Use-pattern: eminence cooling liquid constant thermal apparatus pressurize liquid replenisher being placed on cooling liquid constant thermal apparatus, its underpart is communicated with the thermostat connector of cooling liquid constant thermal apparatus by thermostat connecting pipe 4.Before carrying out engine test, open controller power source, liquid level sensor 7 to detect in liquid storage cylinder that liquid level is lower and feeds back signal to controller, the make-up valve that controller controls high pressure liquid source is opened, fluid infusion in liquid storage cylinder, after supplementing appropriate amount of fluid, liquid level sensor 7 detects liquid level and meets setting value and feed back signal to controller, and the make-up valve that controller controls high pressure liquid source is closed.In the present embodiment, the minimum liquid level of setting higher than engine, thus enables all air of engine and cooling liquid constant thermal apparatus inside discharge, and ensures the unimpeded of water circulation.Then, by high-pressure air source connecting pipe 31, pressure regulation filtrator 3 is connected to outside high-pressure air source, adjustment pressure regulation filtrator 3 makes its top hole pressure reach pressure needed for test, for cooling liquid constant thermal apparatus sets up internal liquid pressure, constant voltage air mass is set up on liquid storage cylinder top by pressure gas, this constant voltage air mass can pass through volume change in addition, stabilizes, realize voltage stabilizing function to the fluctuation of fluid infusion case internal hydraulic pressure.After equal pressure is stable, test can be started.Along with the minimizing of liquid storage intracavity liquid in test, pressure gas will constantly supplement.If liquid level is lower than the minimum liquid level of setting, control make-up valve is opened by controller, fluid infusion in liquid storage cylinder, and now the pressure regulation needle-valve 63 of blowdown valve 6 will be opened, and carry out pressure release, ensures pressure stability in liquid storage cylinder.After liquid level is normal, make-up valve is closed, and pressure gas stops entering, and the pressure regulation needle-valve 63 of blowdown valve 6 is also closed simultaneously, so repeatedly, can provide steady pressure for cooling liquid constant thermal apparatus and ensure that sufficient liquid source is supplied, realize pressurize liquid replenishing function.
In the above-described embodiments, the housing 1 of cooling liquid constant thermal apparatus pressurize liquid replenisher is the box housing 1 comprising lower box 11 and upper box lid 12, and its air intake opening and exhausr port are arranged on upper box lid 12, and air intake opening is connected with pressure regulation filtrator 3 by retaining valve 2; In addition, cooling liquid constant thermal apparatus pressurize liquid replenisher is provided with liquid level sensor 7 thus achieves automatic liquid supply.In other embodiments of the invention, housing 1 can also be arranged to other forms, such as tank body shape, and this housing 1 can also adopt integral structure, such as welding structure; And air intake opening and exhausr port can also be arranged on other positions of housing 1, the such as sidewall of housing 1, as long as higher than the highest liquid level of restriction, the retaining valve 2 that air intake opening connects and pressure regulation filtrator 3 neither must structures, such as, remove retaining valve 2 and pressure regulation filtrator 3, pressure is regulated by blowdown valve 6.Moreover, liquid level sensor 7 and controller also can remove, and rely on liquid level gauge 8 artificial observation inside liquid level, adopt the mode fluid infusion of manual operation make-up valve, or liquid level gauge 8 is also removed, utilizes the detection of weighing scale sense weight realization to residual liquid quantity in liquid storage cylinder.
Claims (8)
1. cooling liquid constant thermal apparatus pressurize liquid replenisher, it is characterized in that: comprise the housing that inside is provided with liquid storage cylinder, the air intake opening that the gas space at liquid storage cylinder top is communicated with outside high-pressure air source when being provided with use by described housing, the exhausr port be communicated with the space outerpace of housing for the gas space at liquid storage cylinder top, the pressure described exhausr port is connected with in liquid storage cylinder opens the blowdown valve of pressure release after exceeding setting value, the thermostat connector be communicated with the corresponding liquid line of cooling liquid constant thermal apparatus by liquid storage cylinder when described housing being also provided with use; Blowdown valve is made up of holder, spring, pressure regulation needle-valve, gland, setting nut and relief fittings; Holder profile is cylindric, is welded on upper box lid, porose in the middle of it, is connected with the gas space of liquid storage cylinder inside; Be provided with perforate above holder, leading with pressure regulation needle-valve coordinates, mating surface finishing, to reduce friction as far as possible, makes pressure regulation needle valve action flexible; Counterbore is opened at pressure regulation needle-valve center, is equipped with spring in counterbore, re-uses gland top pressure; Setting nut is pressure regulation device, with gland for being threaded, is threaded into the degree of depth by adjustment setting nut, can the decrement of regulating spring, applies power to metering pin valve; When liquid storage cylinder internal pressure is greater than the pressure that pressure regulation needle-valve is applied on holder, pressure is released through relief fittings by the gap between holder and pressure regulation needle-valve, liquid storage cylinder internal pressure is declined, and when liquid storage cylinder internal pressure is replied normally, metering pin valve and holder reseal.
2. cooling liquid constant thermal apparatus pressurize liquid replenisher according to claim 1, it is characterized in that: described housing is box housing, comprise lower box and upper box lid, described lower box upper opening, described upper box lid compress be located at described lower box opening on and sealed by O-ring seal with lower box.
3. cooling liquid constant thermal apparatus pressurize liquid replenisher according to claim 2, is characterized in that: described exhausr port and air intake opening are all arranged on described upper box lid.
4. the cooling liquid constant thermal apparatus pressurize liquid replenisher according to claim 1 ~ 3 any one, is characterized in that: be provided with the liquid level sensor detecting residual liquid quantity in liquid storage cylinder in described housing.
5. the cooling liquid constant thermal apparatus pressurize liquid replenisher according to claim 1 ~ 3 any one, is characterized in that: described housing is provided with the liquid level gauge for showing residual liquid quantity in cooling liquid constant thermal apparatus pressurize liquid replenisher.
6. the cooling liquid constant thermal apparatus pressurize liquid replenisher according to claim 1 ~ 3 any one, is characterized in that: described housing bottom is provided with for the leakage fluid dram outside the liquid discharge housing in liquid storage cylinder, and described leakage fluid dram is connected with the tapping valve controlling leakage fluid dram and open and close.
7. the cooling liquid constant thermal apparatus pressurize liquid replenisher according to claim 1 ~ 3 any one, is characterized in that: described air intake opening is connected with only at the retaining valve to conducting during liquid storage cylinder air inlet.
8. the cooling liquid constant thermal apparatus pressurize liquid replenisher according to claim 1 ~ 3 any one, is characterized in that: described air intake opening is connected with the pressure regulation filtrator of gas and the adjustment gaseous tension provided for filtration high pressure source of the gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210469909.2A CN102980772B (en) | 2012-11-20 | 2012-11-20 | Pressure-maintaining fluid-infusion device of cooling fluid thermostatic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210469909.2A CN102980772B (en) | 2012-11-20 | 2012-11-20 | Pressure-maintaining fluid-infusion device of cooling fluid thermostatic device |
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| CN102980772A CN102980772A (en) | 2013-03-20 |
| CN102980772B true CN102980772B (en) | 2015-06-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106793676A (en) * | 2016-11-24 | 2017-05-31 | 新乡航空工业(集团)有限公司 | A kind of liquid cooling system integrated liquid feed device bellows-type liquid reserve tank |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539486A (en) * | 2009-04-24 | 2009-09-23 | 北京航空航天大学 | Gas pressure control adjusting device |
| CN201506705U (en) * | 2009-09-23 | 2010-06-16 | 上海通用汽车有限公司 | Liquid filling device |
| CN202139034U (en) * | 2011-07-21 | 2012-02-08 | 力帆实业(集团)股份有限公司 | Cooling fluid injection device for electric car |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58219433A (en) * | 1982-06-15 | 1983-12-20 | Mazda Motor Corp | Cooling water control apparatus for adjusting assembled engine |
| JP3471631B2 (en) * | 1998-10-15 | 2003-12-02 | 株式会社バンザイ | Automotive liquid exchange system |
| KR101220698B1 (en) * | 2010-12-06 | 2013-01-09 | 한국항공우주연구원 | Cooling device for high altitude test of gas turbine engine |
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- 2012-11-20 CN CN201210469909.2A patent/CN102980772B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539486A (en) * | 2009-04-24 | 2009-09-23 | 北京航空航天大学 | Gas pressure control adjusting device |
| CN201506705U (en) * | 2009-09-23 | 2010-06-16 | 上海通用汽车有限公司 | Liquid filling device |
| CN202139034U (en) * | 2011-07-21 | 2012-02-08 | 力帆实业(集团)股份有限公司 | Cooling fluid injection device for electric car |
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