CN202417684U - Constant-temperature, constant-pressure and constant-flow device for cooling liquid - Google Patents
Constant-temperature, constant-pressure and constant-flow device for cooling liquid Download PDFInfo
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- CN202417684U CN202417684U CN 201120486543 CN201120486543U CN202417684U CN 202417684 U CN202417684 U CN 202417684U CN 201120486543 CN201120486543 CN 201120486543 CN 201120486543 U CN201120486543 U CN 201120486543U CN 202417684 U CN202417684 U CN 202417684U
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Abstract
The utility model discloses a constant-temperature, constant-pressure and constant-flow device for a cooling liquid. The constant-temperature, constant-pressure and constant-flow device comprises a heat exchanger, an external medium circulating pipeline and a cooling liquid circulating pipeline, wherein a cooling liquid heat exchange pipeline and an external medium heat exchange pipeline are arranged on the heat exchanger; the cooling liquid circulating pipeline comprises a primary liquid inlet path and a primary liquid return path; a liquid outlet variable frequency pump, a liquid inlet pressure sensor and a liquid inlet flow meter are arranged on the cooling liquid circulating pipeline; a three-way valve is arranged on the primary liquid return path; the primary liquid inlet path is divided into a first liquid inlet path and a second liquid inlet path; the first liquid inlet path is connected with a liquid inlet of the three-way valve after being connected with an electric control valve; the second liquid inlet path is connected with the liquid inlet of the cooling liquid heat exchange pipeline; a liquid outlet of the cooling liquid heat exchange pipeline is connected with another liquid inlet of the three-way valve; and the liquid outlet of the three-way valve is connected with the primary liquid return path. With the adoption of the constant-temperature, constant-pressure and constant-flow device for the cooling liquid disclosed by the utility model, the temperature of the cooling liquid can be accrately controlled through the three-way valve, the flow and the flow rate are adjusted and controlled through the flow meter and the electric control valve, and the liquid inlet pressure of an engine is controlled by that the variable frequency pump is matched with the liquid inlet pressure sensor.
Description
Technical field
The utility model relates to the device that makes engine coolant in cyclic process, realize the constant temperature and pressure constant current.
Background technique
Cooling liquid constant thermal apparatus is one of indispensable test conditions safeguards system of vehicular engine test; According to technical requirement in motor car engine method for testing performance " GB18297-2001 " and the motor car engine reliability test method " GB/T19055-2003 "; Be the accuracy that guarantees that engine parameter is measured; When process of the test machine oil, cooling liquid are got into motor temperature must carry out constant so that in the scope of regulation the true various performance parameters of measuring motor because motor itself does not possess the constant control function of each temperature; So can only support through the external condition safeguards system; Auxiliary its specific needs that guarantee, the cooling liquid constant thermal apparatus on the Domestic market is CN2900807Y like the Chinese patent notification number at present; The day for announcing is on May 16th, 2007; Name is called in ' engine coolant temperature controlling device ' specification and discloses a kind of engine coolant constant temperature device, and this device comprises the engine coolant thermostatically control circulatory system and the thermal shock forced refrigeration circulatory system, and wherein the cooling liquid thermostatic control system comprises liquid circulation pipeline, heat exchanger, the external agency circulation loop that links to each other with the motor liquid inlet and outlet; Heat exchanger be provided be communicated in respectively in the engine coolant circulation loop with the external agency circulation loop in, carry out the heat exchanging pipe of heat exchange each other; The liquid circulation pipeline is provided with cooling liquid into and out of temperature transducer, swelling water tank, and swelling water tank is provided with high and low liquid level sensor, pressure controlled valve, overflow and outlet pipe, and the external agency circulation loop is provided with water-feeding valve, thermostat valve; This structure can satisfy above two kinds of government test standards basically; But this structure is controlled the temperature of engine coolant through the flow of the medium of control flows in heat exchanger, and the temperature of cooling liquid is difficult to guarantee like this, and along with the more and more harsher test requirements document of motor research and development department; Particularly the motor of world's advanced technology is introduced and research and development; Emission standard is more and more stricter, and test specification is constantly expanded, and test specification is proposed more and more accurate requirement; Such as the accurate control to cooling liquid cooling rate, coolant pressure, flow velocity, the existing cooling liquid constant thermal apparatus in market can satisfy basically.
The model utility content
The purpose of the utility model is to provide a kind of cooling liquid constant temperature and pressure constant-current device that motor liquid entering hole cooling liquid cooling pressure, flow velocity, temperature are accurately controlled.
For realizing above-mentioned purpose; The utility model adopts following technological scheme: a kind of cooling liquid constant temperature and pressure constant-current device; The liquid circulation pipeline that comprises heat exchanger, external agency circulation loop and be used for linking to each other with motor liquid in-out mouth; Heat exchanger be provided be communicated in respectively in the engine coolant circulation loop with the external agency circulation loop in and the cooling liquid heat exchanging pipe, the external agency heat exchanging pipe that carry out heat exchange each other; The liquid circulation pipeline comprises to the main feed liquor road of cooling liquid heat exchanging pipe feed flow with the master that the cooling liquid in the cooling liquid heat exchanging pipe is sent motor back to and goes back to the liquid road; Also be provided with the fluid variable frequency pump that is used to control motor liquid outlet place coolant pressure on the described liquid circulation pipeline, be used to measure the inlet hydraulic sensor and the feed liquor flowmeter of the cooling liquid of motor liquid entering hole; Described master goes back to the liquid road and is provided with three-way valve; Main feed liquor road is divided into the first feed liquor road and the second feed liquor road, and the first feed liquor road is used for through connection being connected with a liquid entering hole of three-way valve behind the electric controlled regulating valve of control flow rate again, and the second feed liquor road is connected with the liquid entering hole of cooling liquid heat exchanging pipe; The liquid outlet of cooling liquid heat exchanging pipe is connected with another liquid entering hole of three-way valve, the liquid outlet of three-way valve with lead go back to the liquid road and be connected.
The liquid circulation pipeline is provided with make-up valve, and the inlet of described make-up valve is divided into two-way, wherein is provided with cooling liquid feed liquor valve on the way, and another road is connected with the external agency circulation loop, and its connecting pipeline is provided with medium feed liquor valve.
Described liquid circulation pipeline is provided with subsequent use make-up valve, and the import of described subsequent use make-up valve is connected with cooling liquid feed liquor valve and medium feed liquor valve respectively.
The liquid entering hole of described electric controlled regulating valve is connected with its liquid outlet through minute branch road, divides branch road to be provided with bypass valve.
Described liquid circulation pipeline is provided with and is used for the motor liquid inlet and outlet valve, the automatic control pressure vent that link to each other with the engine coolant inlet/outlet.
Described external agency circulation loop is provided with medium into and out of valve and medium filter.
Be connected with blowoff line on the described engine coolant circulation loop, blowoff line is provided with blowdown valve.
Medium in the described external agency circulation loop is a water.
Described liquid circulation pipeline is provided with one section visual glass pipeline section.
A kind of cooling liquid constant temperature and pressure constant-current device of the utility model; Carry out certain mixed through the flow of three-way valve control engine coolant inflow heat exchanger and the flow of inflow heat exchanger not; Controlled the temperature that flow into in-engine cooling liquid accurately; Regulate the control flow rate flow velocity through flowmeter and electric controlled regulating valve, cooperate control motor inlet hydraulic with the inlet hydraulic sensor through variable frequency pump.
Further; Two-way is arranged in the import of make-up valve; Can realize when cooling liquid adopts the medium on the external agency circulation loop, can directly getting liquid, when adopting extra cooling liquid, can cooling liquid feed liquor valve be linked to each other with the cooling liquid supply pipeline and get liquid from the external agency circulation loop.
Further, the automatic control pressure vent of setting can be got rid of the bubble in the liquid circulation pipeline, guarantees the unimpeded of liquid circulation pipeline.
Further, be provided with blowdown valve, be convenient to the recovery of user's cooling liquid.
Further, the liquid circulation pipeline is provided with the glass pipeline section, the convenient loop condition of keeping watch on cooling liquid.
Description of drawings
Fig. 1 is the embodiment's of the utility model a structural representation.
Embodiment
A kind of embodiment of cooling liquid constant temperature and pressure constant-current device; As shown in Figure 1; Comprise the liquid circulation pipeline 1, heat exchanger 2, the external agency circulation loop 3 that link to each other with motor 31 liquid in-out mouths; Medium in the external agency circulation loop 3 is a water; Heat exchanger 2 be provided be communicated in respectively in the engine coolant circulation loop with the external agency circulation loop in and the cooling liquid heat exchanging pipe, the external agency heat exchanging pipe that carry out heat exchange each other; The liquid circulation pipeline is provided with one section visual glass pipeline section; Liquid circulation pipeline 1 is provided with motor feed liquor valve 11, motor liquid valve 12, automatic control pressure vent 13, make-up valve 15, expansion liquid tank 16, the cooling liquid output temperature sensor 17, the fluid variable frequency pump 14 that is used to control motor liquid outlet place coolant pressure that are used for linking to each other with motor 23 cooling liquid inlet/outlet, be used to measure the inlet hydraulic sensor 18 and the feed liquor flowmeter 19 of the cooling liquid of motor liquid entering hole; The liquid circulation pipeline comprises to the main feed liquor road of cooling liquid heat exchanging pipe feed flow with the master that the cooling liquid in the cooling liquid heat exchanging pipe is sent motor back to and goes back to the liquid road, leads go back to the liquid road and is provided with three-way valve 20, and main feed liquor road is divided into two-way; The first feed liquor road is used for through connection being connected with a liquid entering hole of three-way valve behind the electric controlled regulating valve 21 of control flow rate again; The liquid entering hole of the cooling liquid heat exchanging pipe in the second feed liquor road and the heat exchanger is connected, and the liquid outlet of cooling liquid heat exchanging pipe is connected with another liquid entering hole of three-way valve, the liquid outlet of three-way valve with lead go back to the liquid road and be connected; The liquid inlet and outlet of electric controlled regulating valve 21 is connected with bypass valve 25 through a minute branch road; The inlet of make-up valve 15 is divided into two-way, wherein is provided with cooling liquid feed liquor valve 22 on the way, and another road is connected with the liquid inlet pipe of external agency circulation loop 3; Its connecting pipeline is provided with medium feed liquor valve 23; Liquid circulation pipeline 1 is provided with subsequent use make-up valve 24, and the import of subsequent use make-up valve 24 is connected with cooling liquid feed liquor valve 22 and medium feed liquor valve 23 respectively, and described external agency circulation loop is provided with medium and advances valve 26, medium and go out valve 27, and medium filter 28; Be connected with blowoff line 29 on the engine coolant circulation loop 1, blowoff line is provided with blowdown valve 30.
The utility model working procedure in use:
1) fluid infusion before the test: at first choose the fluid infusion mode,, cooling liquid feed liquor valve is linked to each other with the cooling liquid supply pipeline, medium feed liquor valve cuts out if cooling liquid of using in the engine coolant circulation loop and the medium in the external agency circulation loop are different; The medium interior as if cooling liquid of using and external agency circulation loop is the same, closes cooling liquid feed liquor valve, opens medium feed liquor valve and gets final product; Subsequent use make-up valve is used under the state of emergency such as make-up valve damage; Connect each pipeline, after system powered on, according to the liquid-level switch signal in the expansion liquid tank, the on off operating mode of control make-up valve made to be full of cooling liquid in the liquid circulation pipeline always; Bubble in the liquid circulation pipeline is discharged through automatic control pressure vent automatically, guarantees that the pipeline circulation is unimpeded.
2) temperature controlled processes: the cooling liquid in the liquid circulation pipeline realizes cooling indirectly through motor running heating itself through heat exchanger, and system adopts craspedodrome formula three-way valve to carry out cold and hot proportioning, accurately controls cooling rate and chilling temperature; Program designs separately according to the test specification of each motor producer, can adjust the transient time of control heating, cooling, satisfies under the various operating modes the requirement of temperature, and the temperature stability through PID control steady working condition guarantees control accuracy.
3) pressure control process: the inlet hydraulic sensor measurement inlet water pressure of the ingress through engine coolant, feed back to frequency variator, frequency variator is controlled inlet's hydraulic pressure that fluid variable frequency pump rotating speed is regulated constant engine automatically.
4) flow control and monitoring process: the motor ingress is installed into the flow quantity meter, measures flow and flow velocity, and one section visual glass tube is set in the liquid circulation pipeline, keeps watch on the loop condition of cooling liquid; Electric controlled regulating valve through PID control, with the common control flow rate flow velocity of bypass valve, also can be set occurrence according to the flux signal of feed liquor flowmeter feedback, simulates the different opening situation of thermostat under car examination state fully.
5) cooling liquid emptying: test finishes, and opening blowdown valve can be convenient to the recovery of user's cooling liquid with intrasystem cooling liquid emptying, avoids the phenomenon of leakage in the pipeline unloading process.
In other embodiment, blowoff line can also be set, directly get final product when needing to get rid of cooling liquid through the motor discharge.
In other embodiment, described medium can also be used refrigeration agent R600a for refrigerator.
Claims (9)
1. cooling liquid constant temperature and pressure constant-current device; The liquid circulation pipeline that comprises heat exchanger, external agency circulation loop and be used for linking to each other with motor liquid in-out mouth; Heat exchanger be provided be communicated in respectively in the engine coolant circulation loop with the external agency circulation loop in and the cooling liquid heat exchanging pipe, the external agency heat exchanging pipe that carry out heat exchange each other; The liquid circulation pipeline comprises to the main feed liquor road of cooling liquid heat exchanging pipe feed flow with the master that the cooling liquid in the cooling liquid heat exchanging pipe is sent motor back to and goes back to the liquid road; It is characterized in that; Also be provided with the fluid variable frequency pump that is used to control motor liquid outlet place coolant pressure on the described liquid circulation pipeline, be used to measure the inlet hydraulic sensor and the feed liquor flowmeter of the cooling liquid of motor liquid entering hole; Described master goes back to the liquid road and is provided with three-way valve; Main feed liquor road is divided into the first feed liquor road and the second feed liquor road, and the first feed liquor road is used for through connection being connected with a liquid entering hole of three-way valve behind the electric controlled regulating valve of control flow rate again, and the second feed liquor road is connected with the liquid entering hole of cooling liquid heat exchanging pipe; The liquid outlet of cooling liquid heat exchanging pipe is connected with another liquid entering hole of three-way valve, the liquid outlet of three-way valve with lead go back to the liquid road and be connected.
2. cooling liquid constant temperature and pressure constant-current device according to claim 1; It is characterized in that; The liquid circulation pipeline is provided with make-up valve, and the inlet of described make-up valve is divided into two-way, wherein is provided with cooling liquid feed liquor valve on the way; Another road is connected with the external agency circulation loop, and its connecting pipeline is provided with medium feed liquor valve.
3. cooling liquid constant temperature and pressure constant-current device according to claim 2 is characterized in that described liquid circulation pipeline is provided with subsequent use make-up valve, and the import of described subsequent use make-up valve is connected with cooling liquid feed liquor valve and medium feed liquor valve respectively.
4. cooling liquid constant temperature and pressure constant-current device according to claim 1 is characterized in that the liquid entering hole of described electric controlled regulating valve is connected with its liquid outlet through minute branch road, divides branch road to be provided with bypass valve.
5. cooling liquid constant temperature and pressure constant-current device according to claim 1 is characterized in that, described liquid circulation pipeline is provided with and is used for the motor liquid inlet and outlet valve, the automatic control pressure vent that link to each other with the engine coolant inlet/outlet.
6. cooling liquid constant temperature and pressure constant-current device according to claim 1 is characterized in that described external agency circulation loop is provided with medium into and out of valve and medium filter.
7. according to any described cooling liquid constant temperature and pressure of claim constant-current device among the claim 1-6, it is characterized in that be connected with blowoff line on the described engine coolant circulation loop, blowoff line is provided with blowdown valve.
8. cooling liquid constant temperature and pressure constant-current device according to claim 7 is characterized in that, the medium in the described external agency circulation loop is a water.
9. cooling liquid constant temperature and pressure constant-current device according to claim 8 is characterized in that, described liquid circulation pipeline is provided with one section visual glass pipeline section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120486543 CN202417684U (en) | 2011-11-30 | 2011-11-30 | Constant-temperature, constant-pressure and constant-flow device for cooling liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120486543 CN202417684U (en) | 2011-11-30 | 2011-11-30 | Constant-temperature, constant-pressure and constant-flow device for cooling liquid |
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| Publication Number | Publication Date |
|---|---|
| CN202417684U true CN202417684U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120486543 Expired - Lifetime CN202417684U (en) | 2011-11-30 | 2011-11-30 | Constant-temperature, constant-pressure and constant-flow device for cooling liquid |
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| CN (1) | CN202417684U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817695A (en) * | 2011-11-30 | 2012-12-12 | 凯迈(洛阳)机电有限公司 | Constant temperature, constant pressure and constant flow device of cooling liquid |
| CN103018047A (en) * | 2012-12-03 | 2013-04-03 | 潍柴动力股份有限公司 | Engine rig test device and engine water temperature control device |
| CN105942867A (en) * | 2016-07-21 | 2016-09-21 | 宁波博菱电器有限公司 | Coffee machine waterway constant flow and constant pressure valve |
| CN109341551A (en) * | 2018-11-06 | 2019-02-15 | 东旭（昆山）显示材料有限公司 | A kind of optical spacer height-measuring machine |
-
2011
- 2011-11-30 CN CN 201120486543 patent/CN202417684U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817695A (en) * | 2011-11-30 | 2012-12-12 | 凯迈(洛阳)机电有限公司 | Constant temperature, constant pressure and constant flow device of cooling liquid |
| CN102817695B (en) * | 2011-11-30 | 2015-04-22 | 凯迈(洛阳)机电有限公司 | Constant temperature, constant pressure and constant flow device of cooling liquid |
| CN103018047A (en) * | 2012-12-03 | 2013-04-03 | 潍柴动力股份有限公司 | Engine rig test device and engine water temperature control device |
| CN105942867A (en) * | 2016-07-21 | 2016-09-21 | 宁波博菱电器有限公司 | Coffee machine waterway constant flow and constant pressure valve |
| CN105942867B (en) * | 2016-07-21 | 2019-01-08 | 宁波博菱电器股份有限公司 | Coffee machine water route constant-current constant-pressure valve |
| CN109341551A (en) * | 2018-11-06 | 2019-02-15 | 东旭（昆山）显示材料有限公司 | A kind of optical spacer height-measuring machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
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| CX01 | Expiry of patent term |