CN207850691U - A kind of temperature can active control constant volume bullet heat-insulation system - Google Patents
A kind of temperature can active control constant volume bullet heat-insulation system Download PDFInfo
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- CN207850691U CN207850691U CN201721535585.2U CN201721535585U CN207850691U CN 207850691 U CN207850691 U CN 207850691U CN 201721535585 U CN201721535585 U CN 201721535585U CN 207850691 U CN207850691 U CN 207850691U
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Abstract
The utility model is related to a kind of temperature can active control constant volume bullet heat-insulation system.The specific heat capacity for mainly solving existing body attemperator is relatively low, sensitive to temperature change, active control heat-insulated cavity temperature and can not keep the big drawback of the consumed energy of temperature.Therefore the utility model helps to promote the body efficiency of heating surface and heat insulation effect.Be mainly technically characterized by double-layer cavity constant volume bullet body, outside incubation cavity body wall is deposited with using heat-insulating material aluminosilicate fiberboard, heating device be with radiation insulation board heating device, piecemeal be evenly arranged in heat-insulated cavity.Heat-insulated cavity is connected to interior inflated with nitrogen with air exchange system and promotes heat-insulated cavity thermal capacity, controls refrigerating plant by controller and heating device energy-efficient ground active control heat-insulated cavity is consistent with inside constant volume bullet temperature.
Description
Technical field
The utility model is related to a kind of temperature can active control constant volume bullet heat-insulation system more particularly to energy-efficient active
Ground controls cavity temperature, the temprature control method for keeping cavity temperature to stablize.
Background technology
When studying fuel of internal combustion engine injection situation, it is often used environment in constant volume bullet simulation cylinder, traditional constant volume bullet heat preservation system
Uniting, itself thermal capacitance is small, and heat dissipation capacity is big, can not active control heat-insulation system temperature, heat insulation function is poor, and it is to reach and set to lead to body
Constant temperature degree elapsed time is excessive, and energy-output ratio is excessive.Simultaneously at present most of constant volume bullet heat-insulation systems mainly have it is internal or
External insulation system structure is all fairly simple, only passively has heat insulation function, does not have the temperature control system of active, and
And can not adapt to while situation when simulated automotive multi-state in cylinder, function is more single, there is limitation, and it is unfavorable to be brought for research
It influences.Therefore need a kind of environment thermal capacitance big, and can active temperature control degree range energy simulated engine various working constant volume bullet
Heat-insulation system.
Invention content
The utility model devise a kind of temperature can active control constant volume bullet heat-insulation system, to solve the problems, such as being to pass
Constant volume bullet body itself thermal capacitance of uniting is small, and heat insulation function is passive, can not active control attemperator temperature, and vapour can not be simulated simultaneously
Situation when vehicle multi-state in cylinder, the drawbacks of having a single function.
In order to solve above-mentioned technical problem, the utility model uses following scheme：
A kind of temperature can active control constant volume bullet heat-insulation system, including double-layer cavity, wherein heat-insulated cavity is on the inside of (6)
Cavity is (11), and Double-layer window (1) has the heating device (13) of radiation insulation board, and air exchange system, wherein gas handling system are
(B) exhaust system is (A), heat-insulated cavity temperature sensor (8), pressure sensor (14), inboard cavity temperature sensor (22)
Total control box (16) are accessed, helium tank (3) connects air source pipeline (18) and connects automatically controlled air inlet triple valve (2), exported by gas
Pipeline (17) connects refrigerating plant (4), and gas pump (15) accesses heat-insulated cavity (6), and heat-insulated cavity (6) connects gas inlet pipe road
(21), gas inlet pipe road (21) connection electric control exhaust triple valve (7), electric control exhaust triple valve (7) pass through exhaust gas recirculation pipeline
(19) connection hand control switch (9) connects automatically controlled air inlet triple valve (2) afterwards, and electric control exhaust triple valve (7) is discharged by gas
Pipeline (20) connects air accumulator (10).
Inside cavity in the double-layer cavity is constant volume bullet cavity, and outside is heat-insulated cavity and air exchange system unicom, helium
Gas cylinder is filled with helium as compressed air source unit, and helium specific heat capacity is high, is conducive to the thermal capacity for promoting body, thermal coefficient is small to be conducive to
Heat-insulation and heat-preservation is equipped with temperature sensor, pressure sensor, temperature and pressure for detecting heat-insulated cavity in heat-insulated cavity.
Double-layer window arranged concentric is arranged in the double-layer cavity, and the stereoscopic window of inboard cavity is more than heat-insulated cavity form.Incubation cavity
Body wall is applied with heat-insulating material, and the heat-resisting glue sticking of material selection aluminosilicate fiberboard further promotes heat-insulating property.Heat-insulated cavity
The heating device of inner homogeneous arrangement radiation insulation board ensures the equal property of temperature that helium is heated.
The heating device for having radiation insulation board, insulation board material are metal foil, and 3mm thickness iron foils can be used, and electricity adds
For heated filament uniform welding on radiation insulation board, being uniformly provided with the ventilative round mouths of a diameter of 1cm on radiation insulation board, distribution density is every
It hundred square centimeters 4, circulates convenient for gas, there is the heating device piecemeal of radiation insulation board to be uniformly distributed in heat-insulated cavity
In, side wall is arranged two pieces around cavity arrangement per two heater strips of block welding, and monoblock, which is arranged, in bottom plane has radiation insulation board
Heating device totally four heater strips, Double-layer window is not provided with the device within sweep of the eye, and each section radiates insulation board welding
On incubation cavity body wall.
The air exchange system, including gas handling system and exhaust system are controlled by two controllers, gas handling system outlet respectively
Mouth is located at heat-insulated cavity bottom, and exhaust system gas outlet is located at heat-insulated cavity top, by gas between gas handling system and exhaust system
Return line is connected, and manually-operated gate is arranged in exhaust gas recirculation pipeline, and when pressure runaway, which can be turned off manually, makes gas discharge rapidly.
The air exchange system includes gas handling system and exhaust system, is controlled respectively by controller one and controller two.Control
Device one controls three pipelines, respectively output pipe, exhaust gas recirculation pipeline, air source pipeline by Electrocontrolled tee valve.Controller one
Control heating device and refrigerating plant.Cooling device is located on the output pipe of gas handling system.Controller two passes through automatically controlled threeway
Valve controls three gas pipings, respectively gas inlet pipe road, exhaust gas recirculation pipeline, gas exhaustion line.
It includes heater, refrigerator, air pump, Electrocontrolled tee valve and its unicom pipeline group that the temperature control, which executes system mainly,
At the voltage-controlled execution system includes mainly Electrocontrolled tee valve and two gas discharge approach are respectively exhaust gas recirculation pipeline and gas
Body discharge pipe.
A kind of temperature can active control constant volume bullet heat-insulation system, including following rate-determining steps：Controller one receives
Incubation cavity and inboard cavity temperature sensor signal.Situation one, ECU perception heat-insulated cavity temperature is fixed less than inside in controller one
Hold and play cavity temperature, controller one controls temperature control and executes system, and specially heater strip is begun to warm up, Electrocontrolled tee valve is closed, gas
Air pump inoperative gas does not recycle.Situation two, ECU perception heat-insulated cavity temperature is less than inside constant volume bullet cavity temperature in controller one
Degree, controller one control temperature control and execute system, and specially controller one controls air pump, refrigerating plant work, and Electrocontrolled tee valve connects
Logical output pipe, helium circulation temperature lowering in air exchange system, and then keep heat-insulated cavity consistent with body temperature.
A kind of temperature can active control constant volume bullet heat-insulation system, including following rate-determining steps：Controller two receives
Incubation cavity pressure sensor signal, situation one, when ECU judges heat-insulated cavity gas pressure off-rating in controller two
When, controller two controls voltage-controlled execution system work, and specially Electrocontrolled tee valve opens gas exhaustion line, closing volume pipe
Road, it is spare that high-pressure helium drains into gas bomb decompression.Situation two, gas pressure is in rated range, in voltage-controlled execution system, threeway
Valve closes gas exhaustion line and opens exhaust gas recirculation pipeline, and gas backstreaming gas handling system participates in cycle.
The utility model design a kind of temperature can active control constant volume bullet heat-insulation system have compared with prior art with
Lower advantageous effect：
(1) a kind of temperature of the utility model design can active control constant volume bullet heat-insulation system, note inside heat-insulated cavity
Enter helium, helium specific heat capacity is larger, improves the thermal capacity of body, is conducive to provide heat for inside cavity.Helium is led simultaneously
The hot smaller cooperation adiabatic heat-insulation chamber outer wall of coefficient greatly inhibits heat-insulated cavity to exchange heat with external environment so that heat only exists
It is exchanged between heat-insulated cavity and inside cavity, therefore improves body insulating power, body internal temperature is made to keep constant.
(2) the utility model design a kind of temperature can active control constant volume bullet heat-insulation system, heat-insulated cavity with ventilation
System connectivity is respectively set heater and refrigerator in device, can make helium with loop control helium temperature by air pump pump gas
With wall surface heat convection, exhaust gas recirculation pipeline is designed between gas handling system and exhaust system so that helium can be in ventilation system
Circulation utilizes convenient for circulated helium in system, by controller control temperature control execution system and anti-using thermocouple as sensor
Temperature signal is presented, this set temperature control system, which works together, to actively control heat-insulated cavity temperature with closed loop, improve temperature control efficiency
With precision, body heat-insulating property is promoted.The gas exhaustion line in exhaust system is equipped with pressure release air accumulator convenient for ensureing simultaneously
Pressure in warm cavity can recycle the helium of discharge in safe range, make that equipment is safer, energy saving, efficient, ring
It protects.
(3) a kind of temperature of the utility model design can active control constant volume bullet heat-insulation system, it is in heat-insulated cavity plus
Hot charging is set to the heating device with radiation insulation board, and novel form has both heating and heat insulation function.On the one hand, there is radiation to hide
The heating device of hot plate makes heater strip neither be contacted with heat-insulated cavity, is not also contacted with inside cavity, therefore heater strip only heats
Helium in heat-insulated cavity so that the efficiency of heating surface is promoted.On the other hand, equal by the heating device piecemeal with radiation insulation board
The even heating temperature for being arranged such that heat-insulated cavity property is substantially improved, while being uniformly provided with air hole on insulation board and being convenient for heat-insulated cavity
Internal gas circulation and loop control.Finally, inboard cavity body thermodynamic temperature is more than 0K, can be in the form of heat radiation to heat preservation
Cavity wall surface conducts heat, can approximation be considered as two parallel massive plate radiant heat transfers, and the heating device with radiation insulation board is with iron foil
The radiant heat transfer thermal resistance that two surfaces are increased as insulation board substantially reduces the hot spoke of inside cavity wall and insulated wall body wall
Penetrate heat exchange amount so that heat insulation effect is substantially improved.
(4) the utility model design a kind of temperature can active control constant volume bullet heat-insulation system, due to simultaneously be equipped with it is cold
But device can also individually can freeze to heat-insulated cavity, therefore can simulated engine with heating device with heating and thermal insulation cavity
Environment in multi-state cylinder is worked if only refrigerator is made to work by air exchange system, and cooling cryogenic gas can be made to be passed through heat preservation
Cavity simulates environment in the low temperature cylinder of cold start-up operating mode so that body temperature is less than local atmospheric temperature with this.
(5) a kind of temperature of the utility model design can active control constant volume bullet heat-insulation system, a whole set of heat preservation system
System, air exchange system and temperature control system are all arranged in the practical constant volume bullet body i.e. external side of inboard cavity, for body inside
Fuel oil injection environment do not influence, the air motion inside heat-insulated cavity nor affect on the air-flow environment inside body for spray
Mist type shape undisturbed.It is most important, outboard chambers by wrap up inside cavity in the form of while improving heat insulation effect, into one
Step improves the equal property of temperature of body.
Description of the drawings
Fig. 1：For technical solution of the present invention constant volume bullet system structure diagram.
Fig. 2：There is the heating device schematic diagram of radiation insulation board for the present invention
Fig. 3：For temperature control scheme schematic diagram of the present invention
Fig. 4：For pressure control strategy schematic diagram of the present invention
Description of symbols in figure：The automatically controlled air inlet triple valve 3- helium tanks of A- exhaust system B- gas handling system 1- forms 2-
4- refrigerator 5- aluminosilicate fiberboard 6- outboard chambers 7- electric control exhaust triple valve 8- incubation cavity temperature sensor 9- hands
Cavity 12- high pressure fuel injection devices 13- has the heating of radiation insulation board on the inside of dynamic control valve 10- exhaust gas treating devices 11-
Device 14- pressure sensor 15- gas pump 16- total control box 17- gas export line 18- air source pipelines, 19- exhausts
Return line, 20- gas exhaustion lines, 21- gas inlet pipes road 22- inboard cavity temperature sensor a- insulation boards b- electricity
It is voltage-controlled that the ventilative one e- temperature controls of circular hole d- controllers of heater strip c- execute two h- of system f- heat-insulated cavity temperature g- controllers
Actuator i- heat-insulated cavity pressure.
Specific implementation mode
It 1,2 is further illustrated below in conjunction with the accompanying drawings with 3,4 pairs of inventions of attached drawing.
The utility model devise a kind of temperature can active control constant volume bullet heat-insulation system, to solve the problems, such as being to pass
Unite constant volume bullet body itself thermal capacitance it is small, heat insulation function difference can not active control heat-insulated cavity temperature and the efficiency of heating surface it is not high, heating
It is uneven, and can not simultaneously simulated automotive multi-state when cylinder in situation, the drawbacks of having a single function.
In order to solve above-mentioned technical problem, present invention employs following scheme：
Temperature can active control constant volume bullet heat-insulation system, including double-layer cavity, wherein heat-insulated cavity are cavity on the inside of (6)
For (11), there is Double-layer window (1) heating device (13) of radiation insulation board, air exchange system, wherein gas handling system to be arranged for (B)
Gas system is (A), and heat-insulated cavity temperature sensor (8), pressure sensor (14), inboard cavity temperature sensor (22) access is always
Control cabinet (16), helium tank (3) connect air source pipeline (18) and connect automatically controlled air inlet triple valve (2), pass through gas export line
(17) connection refrigerating plant (4), gas pump (15) access heat-insulated cavity (6), and heat-insulated cavity (6) connects gas inlet pipe road
(21), gas inlet pipe road (21) connection electric control exhaust triple valve (7), electric control exhaust triple valve (7) pass through exhaust gas recirculation pipeline
(19) connection hand control switch (9) connects automatically controlled air inlet triple valve (2) afterwards, and electric control exhaust triple valve (7) is discharged by gas
Pipeline (20) connects air accumulator (10).
Be inside cavity (11) on the inside of the double-layer cavity, outside be heat-insulated cavity (6) and with air exchange system unicom, due to
Helium density is low, and air inlet is located at below heat-insulated cavity, and gas outlet is located above heat-insulated cavity, is convenient for gas circulation, incubation cavity
Body wall is applied with heat-insulating material, the heat-resisting glue sticking of material selection aluminosilicate fiberboard (5), and helium tank (3) is filled as compressed air source unit
Enter helium, helium specific heat capacity is larger, improves the thermal capacity of body, is conducive to provide heat for inside cavity.Helium is led simultaneously
The hot smaller cooperation adiabatic heat-insulation chamber outer wall of coefficient greatly inhibits heat-insulated cavity to exchange heat with external environment so that heat only exists
It is exchanged between heat-insulated cavity and inside cavity, therefore improves body insulating power, body internal temperature is made to keep constant.It is double-deck
Cavity opens up Double-layer window (1), and arranged concentric is on double-layer cavity wall, and the stereoscopic window of inboard cavity is more than outboard chambers form, with
Meet visual field requirement.
The heating device (13) for having radiation insulation board, insulation board material are metal foil, and 3mm thickness iron foils can be used,
Electric heating wire uniform welding divides on radiation insulation board (a), being uniformly provided with the ventilative round mouths (c) of a diameter of 1cm on radiation insulation board
Cloth density is every hundred square centimeters 4, is circulated convenient for gas, and there is the heating device piecemeal of radiation insulation board to be uniformly distributed in
In heat-insulated cavity, side wall is arranged two pieces around cavity arrangement per two heater strips (b) of block welding, and bottom plane setting monoblock has
The heating device of insulation board is radiated, welds four heater strips altogether, Double-layer window is not provided with the device, each section within sweep of the eye
Radiation insulation board is welded on incubation cavity body wall.
The temperature and compress control method of the utility model mainly control air exchange system by controller and are achieved.Heat preservation
It is disposed with temperature sensor (8), pressure sensor (14), temperature and pressure for detecting heat-insulated cavity in cavity, and will believe
Controller one (d), the controller two (g) number being transferred in total control box (16) are used as the temperature controlled feedback letter of heat-insulated cavity
Number.
In the gas handling system, using helium tank as fresh air source, source outlet is connected with automatically controlled air inlet triple valve (2),
It is respectively gas export line (17), exhaust gas recirculation pipeline that controller one controls three gas pipings by automatically controlled air inlet triple valve
(19), air source pipeline (18).Controller one controls heating device and refrigerating plant simultaneously.Controller one receives temperature in incubation cavity
Sensor signal controls refrigerating plant and heating device working condition compared with body inboard cavity temperature sensor (22) signal.
By taking environment in analog constant high temperature cylinder as an example, when the environment temperature of heat-insulated cavity is more than permissible value with body temperature error, control
Device one processed works.Situation one, ECU perception heat-insulated cavity temperature is less than inside constant volume bullet cavity temperature, controller in controller one
One control temperature control executes system, specially heater strip begin to warm up, Electrocontrolled tee valve Close All, air pump (15) not working gas
It does not recycle.Situation two, ECU perception heat-insulated cavity temperature is less than inside constant volume bullet cavity temperature in controller one, and controller one is controlled
Temperature control processed executes system, and specially controller one controls air pump, refrigerating plant work, and automatically controlled air inlet triple valve connects efferent duct
Road, helium circulation temperature lowering in air exchange system, and then keep heat-insulated cavity consistent with body temperature.
When heat-insulated cavity temperature and the error of rated value within the allowable range, cooler heater and gas pump not work
Make, gas stops cycle.Achieve the purpose that the purpose for controlling environment temperature and body heat preservation.
The major function of the exhaust system is to make the gas pressure in heat-insulated cavity to be maintained in rated range to avoid
It causes danger, while recycling helium, promote temperature control efficiency and economize on resources.Specifically, the row connected with heat-insulated cavity
Gas channel is connect with Electrocontrolled tee valve, and controller two controls three gas pipings, respectively gas by electric control exhaust triple valve
Return line (19), gas exhaustion line (20), gas inlet pipe road (21).Controller two receives pressure sensor letter at this time
Number, when sensor experiences gas pressure off-rating, controller two controls Electrocontrolled tee valve and opens gas exhaustion line,
Gas discharge into gas bomb decompression it is spare avoid causing danger so that the pressure inside heat-insulated cavity reduces rapidly.Work as heat-insulated cavity
Pressure be less than rated value when, controller two control gas exhaustion line close, return line open, gas backstreaming air inlet system
System.By controller one and two Collaborative Control air exchange system of controller, gas circulation control is realized to reach circulated helium profit
With economizing on resources and put forward efficient purpose.
Particularly when needing simulated engine cold start-up, when the relatively low situation of cylinder temperature, low temperature can be filled with inside body
Gas, injection heat-insulated cavity makes environment temperature reduce after helium is cooled down in gas handling system by refrigerator cycle, with simulation
Low temperature environment.
Claims (4)
1. a kind of temperature can active control constant volume bullet heat-insulation system, it is characterised in that：Including double-layer cavity, wherein heat-insulated cavity
Be (11) for cavity on the inside of (6), Double-layer window (1) has a heating device (13) for radiating insulation board, air exchange system, wherein into
Gas system is that (B) exhaust system is (A), heat-insulated cavity temperature sensor (8), pressure sensor (14), inside cavity temperature biography
Sensor (22) accesses total control box (16), and helium tank (3) connects air source pipeline (18) and connects automatically controlled air inlet triple valve (2), passes through
Gas export line (17) connects refrigerating plant (4), and gas pump (15) accesses heat-insulated cavity (6), and heat-insulated cavity (6) connects gas
Intake line (21), gas inlet pipe road (21) connect electric control exhaust triple valve (7), and electric control exhaust triple valve (7) passes through exhaust
Return line (19) connection hand control switch (9) connects automatically controlled air inlet triple valve (2) afterwards, and electric control exhaust triple valve (7) passes through
Gas exhaustion line (20) connects air accumulator (10).
2. according to claim 1 a kind of temperature can active control constant volume bullet heat-insulation system, which is characterized in that the bilayer
It is heat-insulated cavity that inside cavities, which are on the outside of constant volume body, and double-layer cavity opens up Double-layer window, arranged concentric on double-layer cavity wall,
And the stereoscopic window of inboard cavity is more than outboard chambers form, incubation cavity body wall is applied with heat-insulating material, and material selection aluminosilicate fiberboard is used
Heat-resisting glue sticking, helium tank are filled with helium as compressed air source unit, temperature sensor are equipped in heat-insulated cavity, pressure sensor accesses
Total control box.
3. according to claim 1 a kind of temperature can active control constant volume bullet heat-insulation system, which is characterized in that it is described to have
The heating device of insulation board is radiated, insulation board material is metal foil, 2mm thickness iron foils can be used, electric heating wire uniformly welds at equal intervals
It is connected on radiation insulation board, radiates and be uniformly provided with the ventilative round mouths of a diameter of 1cm on insulation board, distribution density is every hundred square centimeters
It 4, circulates convenient for gas, there is the heating device piecemeal of radiation insulation board to be uniformly distributed in heat-insulated cavity, side wall setting
Two pieces centrally arranged around cavity, and per two heater strips of block welding, monoblock, which is arranged, in bottom plane has the heating of radiation insulation board
Device welds four heater strips at equal intervals altogether, and Double-layer window is not provided with the device within sweep of the eye, and each section radiates insulation board
End bent jointing is on incubation cavity body wall.
4. according to claim 1 a kind of temperature can active control constant volume bullet heat-insulation system, which is characterized in that the ventilation
System includes gas handling system and exhaust system, is controlled respectively by controller one and controller two, in gas handling system：Controller one is logical
It crosses automatically controlled air inlet triple valve and controls three pipelines, respectively its connection incubation cavity of output pipe, exhaust gas recirculation pipeline its connection guarantor
It connects helium tank for warm chamber, air source pipeline, and controller one controls heating device and refrigerating plant, cooling device are located at gas handling system
Output pipe on；In exhaust system：Controller two controls three gas pipings, respectively gas by electric control exhaust triple valve
Intake line its connect incubation cavity, exhaust gas recirculation pipeline it connect air inlet triple valve, gas exhaustion line it connects air accumulator, control
Device one processed, controller two are located in total control box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721535585.2U CN207850691U (en) | 2017-11-14 | 2017-11-14 | A kind of temperature can active control constant volume bullet heat-insulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721535585.2U CN207850691U (en) | 2017-11-14 | 2017-11-14 | A kind of temperature can active control constant volume bullet heat-insulation system |
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| Publication Number | Publication Date |
|---|---|
| CN207850691U true CN207850691U (en) | 2018-09-11 |
Family
ID=63422462
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721535585.2U Expired - Fee Related CN207850691U (en) | 2017-11-14 | 2017-11-14 | A kind of temperature can active control constant volume bullet heat-insulation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111638735A (en) * | 2020-04-02 | 2020-09-08 | 邵阳学院 | Constant-volume combustion bomb heating device and method |
| CN112879903A (en) * | 2021-01-12 | 2021-06-01 | 北京工业大学 | Combustion heating temperature rising device and method for inside of constant-volume combustion bomb |
-
2017
- 2017-11-14 CN CN201721535585.2U patent/CN207850691U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111638735A (en) * | 2020-04-02 | 2020-09-08 | 邵阳学院 | Constant-volume combustion bomb heating device and method |
| CN112879903A (en) * | 2021-01-12 | 2021-06-01 | 北京工业大学 | Combustion heating temperature rising device and method for inside of constant-volume combustion bomb |
| CN112879903B (en) * | 2021-01-12 | 2023-02-28 | 北京工业大学 | Combustion heating temperature rising device and method for inside of constant-volume combustion bomb |
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