CN207764665U - Temperature control equipment and threst stand for threst stand - Google Patents
Temperature control equipment and threst stand for threst stand Download PDFInfo
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- CN207764665U CN207764665U CN201721856034.6U CN201721856034U CN207764665U CN 207764665 U CN207764665 U CN 207764665U CN 201721856034 U CN201721856034 U CN 201721856034U CN 207764665 U CN207764665 U CN 207764665U
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- heat exchanger
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Abstract
The utility model belongs to technical field of engines, and in particular to a kind of temperature control equipment and threst stand for threst stand.Temperature control equipment described in the utility model for threst stand, including the first cooling unit and the second cooling unit, first cooling unit includes two logical proportioning valves and level-one heat exchanger, level-one heat exchanger can provide the first coolant liquid of steady temperature to the second cooling unit, second cooling unit includes threeway proportioning valve and two-stage heat exchanger, aperture by adjusting threeway proportioning valve can change the flow for the first coolant liquid for flowing through two-stage heat exchanger, to which the intake air temperature of engine be adjusted.By using the temperature control equipment and threst stand described in the utility model for threst stand, can effectively to engine carry out emission testing when in it is cold after Engine Inlet Temperature accurately adjusted, ensure that the temperature of coolant liquid is constant, promotes the reliability of measurement.
Description
Technical field
The utility model belongs to technical field of engines, and in particular to a kind of temperature for threst stand controls
Device and threst stand.
Background technology
Carry out engine emission class experiment when, in it is cold after temperature must be controlled, now generally use level-one in cold temperature
Control device is come the control of temperature after cold in carrying out.Cold preceding gas enters charge air cooler 20' by the road in engine 10', in
Enter engine 10' after cooler 20' cooling, into engine 10' before in it is cold after gas temperature it is cold in after temperature sensor
30' is measured, in it is cold after temperature control by charge air cooler 20' water route part control, i.e., public chilled water is through two-way valve 40'
Charge air cooler 20' is entered, flows back into public cooling water system by the road.When cold rear temperature and setting value have deviation in the middle, pass through
Control system adjusts the aperture of two-way valve 40' to reach set temperature.
Although prior art can control the temperature of cold rear gas in engine, the temperature change of public chilled water is very
Greatly, it cannot be guaranteed that the temperature of charge air cooler coolant liquid meets the requirement that cannot be below 20 DEG C of laws and regulations requirement, and public chilled water
Temperature 1 day in different time sections can have differences, there is also differences for the temperature of same date, start even if may result in this way
In under machine declared working condition it is cold after temperature control it is consistent, under sub-load in it is cold after temperature can also have differences, to hair
The consistency of motivation emission testing generates very big influence.And in actual engine emissions testing, to different time sections
The emission testing of progress, in it is cold after the coherence request of temperature be strict, therefore prior art means can neither meet
The charge air cooler coolant liquid of laws and regulations requirement is not less than 20 DEG C of requirement, can not meet engine emissions testing cold rear temperature in
Control the requirement of consistency.
Utility model content
Purpose of the utility model is to solve above-mentioned at least one problem, which is by following technology
What scheme was realized.
The utility model proposes a kind of temperature control equipments for threst stand, including the first cooling
Unit and the second cooling unit, first cooling unit are used to provide the first cold of steady temperature to second cooling unit
But liquid, second cooling unit can by adjust the first coolant liquid flow control described in engine intake air temperature.
Further, first cooling unit includes two logical proportioning valves and level-one heat exchanger, the level-one heat exchange
Device can provide the first coolant liquid of steady temperature to second cooling unit, by the aperture for adjusting the two logical proportioning valve
The flow for the second coolant liquid for flowing through the level-one heat exchanger can be changed, to pass through second coolant liquid and described the
The heat exchange of one coolant liquid adjusts the temperature of the first coolant liquid in the level-one heat exchanger.
Further, second cooling unit includes threeway proportioning valve and two-stage heat exchanger, by adjusting described three
The aperture of logical proportioning valve can change the flow for the first coolant liquid for flowing through the two-stage heat exchanger, to the engine
Intake air temperature be adjusted.
Further, first cooling unit further includes filtration core, and the filtration core is used for logical to being passed into described two
The second coolant liquid in proportioning valve is filtered.
Further, first coolant liquid and second coolant liquid are aqueous solution.
Further, second cooling unit further includes the first temperature sensor and temperature controller, and first temperature passes
Sensor is used to detect the temperature for the first coolant liquid that the threeway proportioning valve is passed into the two-stage heat exchanger, the temperature control
The temperature for the first coolant liquid that instrument can be detected according to first temperature sensor adjusts the aperture of described two logical proportioning valves,
To adjust the flow for being passed into the first coolant liquid in the two-stage heat exchanger through the threeway proportioning valve.
Further, further include water tank and water pump, the water pump is for the first coolant liquid in the water tank to be passed into
In the level-one heat exchanger.
Further, further include second temperature sensor, the second temperature sensor is set to the two-stage heat exchanger
Output pipe on, the output gas temperature for detecting the two-stage heat exchanger.
Further, further include third temperature sensor, the third temperature sensor is set to the two-stage heat exchanger
Intake line on, the input gas temperature for detecting the two-stage heat exchanger.
The utility model also proposed a kind of threst stand, and engine test is used for including described above
The temperature control equipment of rack.
By using the temperature control equipment and engine test described in the utility model for threst stand
Rack, can effectively to engine carry out emission testing when in it is cold after Engine Inlet Temperature accurately adjusted, guarantee
The temperature of coolant liquid is constant, when being the different threst stand identical emission testings of progress or when same engine difference
Between when carrying out same emission testing, it is cold in satisfaction after temperature control consistency requirement, promote the reliability of measurement.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to this practicality
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of cold temperature control equipment in level-one in the prior art；
Fig. 2 is the utility model embodiment structural schematic diagram.
Respectively label indicates as follows in attached drawing：
10'：Engine, 20'：Charge air cooler, 30'：In it is cold after temperature sensor, 40'：Two-way valve；
11：Two logical proportioning valves, 12：Level-one heat exchanger, 13：Filtration core；
21：Threeway proportioning valve, 22：Two-stage heat exchanger, 23：First temperature sensor, 24：Temperature controller；
30：Water tank；
40：Water pump；
51：Second temperature sensor, 52：Third temperature sensor.
Specific implementation mode
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to be best understood from the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened completely is communicated to those skilled in the art.
Fig. 1 is the structural schematic diagram of the utility model embodiment.As shown in Figure 1, a kind of for threst stand
Temperature control equipment, including the first cooling unit and the second cooling unit.First cooling unit is used for single to the second cooling
Member provides the first coolant liquid of steady temperature, and the second cooling unit can pass through the flow control engine of the first coolant liquid of adjusting
Intake air temperature.
Wherein, the first cooling unit includes two logical proportioning valves 11 and level-one heat exchanger 12, and level-one heat exchanger 12 can
The first coolant liquid that steady temperature is provided to the second cooling unit, the aperture by adjusting two logical proportioning valves 11, which can change, to be flowed through
The flow of second coolant liquid of level-one heat exchanger 12, to be adjusted by the heat exchange of the second coolant liquid and the first coolant liquid
The temperature of the first coolant liquid in level-one heat exchanger 12.
Second cooling unit includes threeway proportioning valve 21 and two-stage heat exchanger 22, by adjusting opening for threeway proportioning valve 21
Degree can change the flow for the first coolant liquid for flowing through two-stage heat exchanger 22, to be adjusted to the intake air temperature of engine
Section.
The temperature that aperture by changing two logical proportioning valves 11 of public chilled water pipe road controls the first coolant liquid is constant, leads to
The aperture for crossing change threeway proportioning valve 21 changes the flow for the first coolant liquid for flowing to two-stage heat exchanger 22, to reach control
In it is cold after temperature purpose.The aperture of two logical proportioning valves 11 automatically controls aperture variation, threeway ratio with control system to realize
The aperture of valve 21 manually controls aperture variation with control system to realize.To realize laws and regulations requirement the first coolant liquid temperature
Requirement not less than 20 DEG C, and it is constant to may be implemented the first coolant temperature, and reach same engine different time and carry out
Same emission testing, in it is cold after temperature control consistent requirement, for engine emissions testing consistency, accuracy provide according to
According to.
Further, the first cooling unit further includes filtration core 13, and filtration core 13 is used for being passed into two logical proportioning valves 11
In the second coolant liquid be filtered.
In the present embodiment, the first coolant liquid and second coolant liquid are aqueous solution.
Further, in this embodiment the second cooling unit further includes the first temperature sensor 23 and temperature controller 24, first
Temperature sensor 23 is for detecting the temperature for being passed into the first coolant liquid in two-stage heat exchanger 22 through threeway proportioning valve 21, temperature
The aperture of two logical proportioning valves 11 can be adjusted according to the temperature for the first coolant liquid that the first temperature sensor 23 detects by controlling instrument 24,
To adjust the flow for being passed into the first coolant liquid in two-stage heat exchanger 22 through threeway proportioning valve 21.
Engine is started to work, and hot vehicle finishes, engine is adjusted to staking-out work.The temperature of first coolant liquid is set first
Degree, it is by adjusting two-way proportioning valve 11 that the temperature control of first coolant liquid is invariable.Again by adjusting threeway proportioning valve 21
Aperture come control the flow for the first coolant liquid for flowing through two-stage heat exchanger 22 achieve the purpose that control in it is cold after temperature.It is logical
The first monitoring in real time of temperature sensor 23 is crossed towards the temperature of the first coolant liquid of two-stage heat exchanger 22, constantly changes threeway ratio
Example valve 21 aperture, it is cold in finally making after temperature reach requirement temperature.
With the continuous variation variation of 21 aperture of threeway proportioning valve in adjustment process, the temperature of the first coolant liquid also will appear
Fluctuation, as long as the temperature departure set target value of the first coolant liquid, temperature controller 24 will automatically adjust opening for two logical proportioning valves 11
Degree adjusts the temperature of the first coolant liquid to set temperature.
Further, in this embodiment temperature control equipment further include water tank 30 and water pump 40, water pump 40 is used for water
The first coolant liquid in case 30 is passed into level-one heat exchanger 12.
When engine is started to work, the fresh air of sucking becomes cold preceding gas in high temperature after charger boost
Body, cold preceding pipeline enters in two-stage heat exchanger 22 and carries out heat exchange with the first coolant liquid to carry out during this partial air passes through
It is cooling, to which heat is transmitted to the first coolant liquid.First coolant liquid is by level-one heat exchanger 12, threeway proportioning valve 21, two level
It is flowed in the closed system that heat exchanger 22, water tank 30 and water pump 40 form, first will measured by the first temperature sensor 23
Coolant temperature feeds back to temperature controller 24, and two logical proportioning valves 11 are automatically controlled according to its included PID function by temperature controller 24
Aperture, to the temperature of the first coolant liquid of control.
Further, in this embodiment temperature control equipment further include second temperature sensor 51, second temperature sensing
Device 51 is set on the output pipe of two-stage heat exchanger 22, the output gas temperature for detecting two-stage heat exchanger 22.
Further, in this embodiment temperature control equipment further include third temperature sensor 52, third temperature sensing
Device 52 is set on the intake line of two-stage heat exchanger 22, the input gas temperature for detecting two-stage heat exchanger 22.
By the way that second temperature sensor 51 and third temperature sensor 52 are respectively set before and after two-stage heat exchanger 22,
The input and output temperature temperature of the front and back gas of two-stage heat exchanger 22 can be detected, to control to adjust the temperature of the first coolant liquid
It spends, the intake air temperature of cold rear engine in satisfaction.
By using the temperature control equipment and engine test described in the utility model for threst stand
Rack, can effectively to engine carry out emission testing when in it is cold after Engine Inlet Temperature accurately adjusted, guarantee
The temperature of coolant liquid is constant, when being the different threst stand identical emission testings of progress or when same engine difference
Between when carrying out same emission testing, it is cold in satisfaction after temperature control consistency requirement, promote the reliability of measurement.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with
Subject to the scope of the claims.
Claims (10)
1. a kind of temperature control equipment for threst stand, which is characterized in that including the first cooling unit and second
Cooling unit, first cooling unit is used to provide the first coolant liquid of steady temperature to second cooling unit, described
Second cooling unit can by adjust the first coolant liquid flow control described in engine intake air temperature.
2. the temperature control equipment according to claim 1 for threst stand, which is characterized in that described first
Cooling unit includes two logical proportioning valves and level-one heat exchanger, and the level-one heat exchanger can be carried to second cooling unit
For the first coolant liquid of steady temperature, the aperture by adjusting the two logical proportioning valve, which can change, flows through the level-one heat exchange
The flow of second coolant liquid of device, it is described to be adjusted by the heat exchange of second coolant liquid and first coolant liquid
The temperature of the first coolant liquid in level-one heat exchanger.
3. the temperature control equipment according to claim 2 for threst stand, which is characterized in that described second
Cooling unit includes threeway proportioning valve and two-stage heat exchanger, and the aperture by adjusting the threeway proportioning valve, which can change, to be flowed through
The flow of first coolant liquid of the two-stage heat exchanger, to which the intake air temperature of the engine be adjusted.
4. the temperature control equipment according to claim 2 for threst stand, which is characterized in that described first
Cooling unit further includes filtration core, and the filtration core was for carrying out the second coolant liquid being passed into described two logical proportioning valves
Filter.
5. the temperature control equipment according to claim 2 for threst stand, which is characterized in that described first
Coolant liquid and second coolant liquid are aqueous solution.
6. the temperature control equipment according to claim 3 for threst stand, which is characterized in that described second
Cooling unit further includes the first temperature sensor and temperature controller, and first temperature sensor is for detecting the threeway proportioning valve
It is passed into the temperature of the first coolant liquid in the two-stage heat exchanger, the temperature controller can be according to first temperature sensing
The temperature for the first coolant liquid that device detects adjusts the aperture of described two logical proportioning valves, logical through the threeway proportioning valve to adjust
Enter the flow to the first coolant liquid in the two-stage heat exchanger.
7. the temperature control equipment according to claim 2 for threst stand, which is characterized in that further include water
Case and water pump, the water pump is for the first coolant liquid in the water tank to be passed into the level-one heat exchanger.
8. the temperature control equipment according to claim 6 for threst stand, which is characterized in that further include
Two temperature sensors, the second temperature sensor are set on the output pipe of the two-stage heat exchanger, described for detecting
The output gas temperature of two-stage heat exchanger.
9. the temperature control equipment according to claim 8 for threst stand, which is characterized in that further include
Three-temperature sensor, the third temperature sensor are set on the intake line of the two-stage heat exchanger, described for detecting
The input gas temperature of two-stage heat exchanger.
10. a kind of threst stand, which is characterized in that the threst stand includes according in claim 1-9
Any one of them is used for the temperature control equipment of threst stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721856034.6U CN207764665U (en) | 2017-12-26 | 2017-12-26 | Temperature control equipment and threst stand for threst stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721856034.6U CN207764665U (en) | 2017-12-26 | 2017-12-26 | Temperature control equipment and threst stand for threst stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207764665U true CN207764665U (en) | 2018-08-24 |
Family
ID=63184965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721856034.6U Active CN207764665U (en) | 2017-12-26 | 2017-12-26 | Temperature control equipment and threst stand for threst stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207764665U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310694A (en) * | 2021-04-22 | 2021-08-27 | 中国地质大学（武汉） | Cold and hot impact test system for engine |
| CN114459135A (en) * | 2022-02-17 | 2022-05-10 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Temperature control method and device for semiconductor equipment |
-
2017
- 2017-12-26 CN CN201721856034.6U patent/CN207764665U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310694A (en) * | 2021-04-22 | 2021-08-27 | 中国地质大学（武汉） | Cold and hot impact test system for engine |
| CN114459135A (en) * | 2022-02-17 | 2022-05-10 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Temperature control method and device for semiconductor equipment |
| CN114459135B (en) * | 2022-02-17 | 2023-10-20 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Temperature control method and device for semiconductor equipment |
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