CN207366210U - A kind of heater assembly of heating flowing gas - Google Patents
A kind of heater assembly of heating flowing gas Download PDFInfo
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- CN207366210U CN207366210U CN201720970565.1U CN201720970565U CN207366210U CN 207366210 U CN207366210 U CN 207366210U CN 201720970565 U CN201720970565 U CN 201720970565U CN 207366210 U CN207366210 U CN 207366210U
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Abstract
It the utility model is related to a kind of heater assembly for constant volume spraying simulator for direct injecting diesel engine.It is characterized in that：Heater can be made of more level assemblies, be under normal circumstances two-stage；It is made of per level assembly upper shell and lower shell, heating core is equipped with two section cylinders, for heated nitrogen.The current electrode for powering to heating core is equipped with two section cylinders and is used for the temperature sensor for measuring the temperature of nitrogen, the conducting wire of power device is stretched out by the aperture on each cylinder barrel in each cylinder, is connected with exterior power supply unit with control unit.The utility model can accurately heated nitrogen be to suitable temperature, and the heating unit has can connect the versatilities of various constant volume spraying simulator for direct injecting diesel engine.
Description
Technical field
A kind of heater assembly for heating flowing gas is the utility model is related to, in DID engine constant volume spraying mould
Intend using on device, belong to internal combustion engine research field.
Background technology
The discharge standard of continuous improvement and increasingly serious problem of energy crisis propose engine technology new challenge,
The key for influencing the characteristic such as diesel combustion and discharge is that oil, gas, the aspect of room three are mutually matched, and corresponding engine operating condition is electric
Control injection system when oil spout, how oil spout and to spray into cylinder the emphasis for becoming research with the mixed effect of air, combustion position,
Only fully grasping fuel spray and combustion characteristics could realize and the accurate of whole combustion process in engine cylinder is controlled, and solve
The contradiction of engine fuel economy and emission performance.
And the research of DID engine high-pressure fog characteristic is always internal combustion engine person's focus of attention.Constant volume combustion bomb
It is then to study IC engine cylinder internal spraying and the important tool of burning, constant volume spraying simulator is one kind of constant volume combustion bomb, can
With the spray condition of real simulation engine in-cylinder direct-jet, important work is played to physics set-up procedures such as research fuel-oil atmozations
With.And the device has the versatility that can connect various high-pressure fuel supply systems, research, exploitation and scheme for injection system
Adjustment has important directive significance.
Ambient temperature is a key parameter of constant volume combustion bomb, in order to adapt to the research and development of modern diesel engine combustion system
Demand, it is necessary to can reach inside constant volume combustion bomb and maintain very high ambient temperature.Existing constant volume combustion bomb heating
System is divided into following a few classes, is introduction and analysis to its feature below.
1) pre-mixing combustion hot type：Traditional constant volume combustion bomb generally use combustion gas plays the side of internal mix burning holding
Formula realizes higher ambient temperature, such as：Constant volume premixed combustion testing apparatus (number of patent application 201110231930.4).This
Although kind of method is quick, in premixed combustion process, the pressure inside constant volume combustion bomb can gradually rise, so as to change combustion
The primary condition of burning；In addition, make to produce higher pressure in volume fixing device after combustion heat release, if the combustion pressure is burned
It can not be in time released in journey, certain influence can be brought to the security of constant volume combustion bomb.
2) electric heating type：This mode of heating is determined by installing electric heater in constant volume combustion bomb so as to directly heat
Hold the gas in firebomb.Such as：A kind of split type heating system of constant volume combustion bomb（Number of patent application is 201610814883.9）
Just this heating means have been used.General heater is placed in constant volume bullet bottom side, is wanted for firing rate and maximum temperature
Ask, heater is generally large, since constant volume bullet internal structure is compact, it tends to be difficult to arrange.And due to the installation site of heater
With the limitation of size, it is uneven to easily cause the heating of whole gaseous environment in constant volume bullet, gas flowfield point in disturbed test region
Cloth.In addition, the firing rate and power characteristic of this type mode of heating are not easy to adjust.
3) heating wall type：This mode of heating heats gas in constant volume bullet by heating constant volume bullet wall.Patent
Such as：The constant volume combustion bomb system (number of patent application 201510141513.9) of simulated engine burning just employs this heating
Mode.Shortcoming is the wall metal material mechanics performance limitation after being heated, and maximum heating temperature is difficult to be lifted and wall and gas
Temperature gradient caused by the temperature difference can increase interference during optical measurement.
4) inlet air heating type：Some constant volume combustion bombs are also by the way of inlet air heating, after first environmental gas is heated again
It is passed through in constant volume bullet.This mode of heating is external by heat source, is passed through again in constant volume combustion bomb after first environmental gas is heated.It is this
Scheme can save the space in constant volume combustion bomb, by controlling power of heat source to control heating-up temperature.The utility model just belongs to
The heating system of inlet air heating type.
When being heated to constant volume combustion bomb, it is necessary to preset the ambient temperature in constant volume combustion bomb, this requires heating
System can be adjusted heating system according to the feedback information of temperature sensor, reach the ambient temperature in constant volume combustion bomb
To preset value.
The content of the invention
The purpose of this utility model is to provide a heating dress that can be used for constant volume spraying simulator heating flowing nitrogen
Put, it is heating and continuous to flow into the nitrogen for holding and playing cavity.
In order to realize the purpose of this utility model, it is proposed that a kind of heating unit of heating flowing gas, for heating nitrogen
Gas, including：The heating unit main body being fixed on above combustion chamber；Apparatus main body is made of Multi-stage heating device assembly, and generally two
Level, can also use more series；All it is divided into two metal cylinders up and down per level-one heater assembly, often saves and all wrapped in cylinder
Contain heating core, power supply unit and temperature measuring equipment；Heating core can be added the nitrogen for flowing through heating core in the form of heat convection
Heat, power regulating eqiupment control heating intensity by controlling the watt level of the heating wire in heating core, to control the heating temperature of nitrogen
Degree, the firing rate of nitrogen is controlled by controlling the flow velocity of nitrogen.Whole heater assembly is outer covered with temperature insulating material.Heating
Flow can be 50Nm by two level assemblies of device, the first order3The nitrogen of/h is by room temperature（290K-300K）600K or so is heated to, the
Nitrogen can be heated to 850K to 900K by two level from 600K；After multiple stage heater is connected, nitrogen can be heated to higher
Temperature.Power supply unit is powered to heating core and temperature measuring equipment；The conducting wire of power supply unit is from the hole on heater upper shell barrel
Inner barrel is passed through, is connected with internal current electrode and temperature measuring equipment, that is, temperature sensor, in current electrode and lower shell
Heating core is connected.Temperature measuring equipment, that is, temperature sensor can measure the temperature of nitrogen, monitor the heating state of nitrogen in real time.Temperature
Degree sensor is located at inner barrel, heating core top.The control unit that temperature information is delivered to outside by temperature measuring equipment is formed instead
Feedback, control unit adjust the watt level of heater according to temperature information.The temperature insulating material of outer layer and the thermal insulation of each junction
Material can scatter and disappear to avoid heat.The heating unit has the versatility that can connect various constant volume combustion bombs.
Compared with prior art, the beneficial effects of the utility model are:The utility model outside constant volume bullet by installing
Heater assembly with unique texture, so as to snap into capable heating to constant volume;Heater wall has been coated with thermal insulation layer, is avoided that
Heat waste;Each heater can be controlled individually, and using closed-loop control, the temperature that can be fed back according to temperature sensor transmitter is believed
Breath control setting heating-up temperature.Using the utility model can accurately heated nitrogen to suitable temperature.This practicality is new
Type is not limited to constant volume bullet type, can have the versatility that can connect various constant volume combustion bombs, whole heating system temperature is adjustable
Scope is wide, flexible arrangement, easy to control.
Below with reference to the drawings and specific embodiments, the utility model is described in detail.
Brief description of the drawings
Fig. 1 is the structure diagram of heater assembly.
Fig. 2 is heater assembly upper flange component and the schematic diagram of cylinder junction sealing.
In figure, 5 --- lower flange component, 6 --- isometric studs, 7 --- spring washer, 8 --- nut, 9 ---
Upper shell, 10 --- upper flat cover, 11 --- isometric studs, 12 --- upper flange component, 13 --- copper packing, 14 --- lower cylinder
Body, 15 --- full thread stud, 16 --- flange gasket, 17 --- heat-barrier material, N1 --- gas access, N2 --- gas goes out
Mouthful, N5-N16 --- logical guidewire port, dotted portion, heating core.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：
As shown in Figure 1, a heater assembly being preferable to carry out according to the present utility model, by upper shell 9, lower shell
14th, upper flat cover 10 etc. forms.Matched appendix experiment device also has：Heating core, temperature sensor, power supply unit etc..
Heater assembly is the main device of the utility model.
As shown in Figure 1, in an experiment, heater top end cover is provided with hole N1, and nitrogen is flowed into out of hole N1, suitable from top to bottom
Sequence flows, and during by upper shell 9, by temperature sensor thermometric, sensor can communicate the temperature to control unit, control unit meeting
Power regulating eqiupment is adjusted according to temperature information, power regulating eqiupment can control the power of heating core.Nitrogen continues to flow downward afterwards, by upper cylinder
The heating core of assembling in body 9, the heating wire for being heated the cylindrical helical distribution of in-core are heated in a manner of heat convection, heated
The power of core can be controlled by power regulating eqiupment, so as to control the heating-up temperature of nitrogen.After upper shell 9, nitrogen continues to dirty
It is dynamic, it is same by temperature sensor thermometric in lower shell 14 by lower shell 14, if having reached will for gas temperature at this time
Ask, then the heating core in control unit control lower shell 14 is stopped, if gas temperature not up to requires, gas continues quilt
Heating core heats, so that nitrogen is heated to test required calibration temperature.If after a level assembly, the temperature of nitrogen
Not up to require, then can be heated in the same component of the fit beneath level-one of original component.Nitrogen continues to flow afterwards,
Enter through outlet N2 holes and be full of firebomb cavity.The conducting wire of current electrode and temperature sensor in upper shell 9 is from upper
Passed through in N5-N10 holes on cylinder 9, be connected to the power supply unit and control unit of outside；In current electrode and upper shell 9
Heating core is connected, and is the heating wire power supply in heating core.The conducting wire of current electrode and temperature sensor in lower shell 14
Passed through out of N11-N16 holes on lower shell 14, be connected to the power supply unit of outside；Current electrode and the heating in lower shell 14
Core is connected, and is the heating wire power supply in heating core.Connected between upper shell 9 and lower shell 14 using isometric studs 6, altogether
There are 12 identical isometric studs to be used to connect upper shell 9 and lower shell 14.Between lower shell 14 and constant volume combustion bomb main body
Connected by full thread stud 15, share 24 identical full thread studs and be used to connect lower shell and constant volume combustion bomb main body.
Outside heater assembly cylinder, temperature insulating material 17 is enclosed with, it is possible to reduce thermal loss, improves the efficiency of heating surface.
As shown in Figure 2, in order to improve the efficiency of heating surface of nitrogen, radiation loss is reduced, the utility model is not only in heater
Component cylinder is wrapped with temperature insulating material, upper flange component 12 and cylinder junction similarly be filled with temperature insulating material.On
The shape of inverted steps shape is made in the position that flange assembly bottom is contacted with cylinder, and larger gap can be reserved when being assembled with cylinder
To fill temperature insulating material, good thermal insulation effect is played.
Claims (10)
1. a kind of heater assembly of heating flowing gas, nitrogen is heated in being tested for constant volume spraying simulator for direct injecting diesel engine
Gas, it is characterised in that：Heater can be made of more level assemblies；It is divided into two section cylinder up and down per level assembly, often saves cylinder and be borne by
The function to gas thermometric, heating.
2. heater assembly according to claim 1, it is characterised in that heater can realize higher with plural serial stage
Heating-up temperature.
3. heater assembly according to claim 1, it is characterised in that in each cylinder of heater, heating core is equipped with,
For heat gas, position of the heating core in cylinder is located at below temperature sensor, and central axes are overlapped with cylinder central axes, are added
Hot core is using heating core common on the market.
4. heater assembly according to claim 1, it is characterised in that in each cylinder of heater, be equipped with temperature biography
Sensor, for monitoring the temperature of heated nitrogen in real time.
5. heater assembly according to claim 1, it is characterised in that heater outer layer covers have temperature insulating material.
6. heater assembly according to claim 1, it is characterised in that be filled with the junction of flange assembly and cylinder
Temperature insulating material.
7. heater assembly according to claim 1, it is characterised in that in the outer wall of the top half of each cylinder of heater
On be provided with the hole of conducting wire for placing heating electrode and temperature sensor, hole is circumferential uniformly distributed totally six, in cylinder
Portion, the direction in hole is perpendicular to barrel, and barrel is run through in hole.
8. heater assembly according to claim 1, it is characterised in that by being threadedly coupled between upper shell and lower shell,
Threaded hole span centre on the base of cylinder is distributed.
9. heater assembly according to claim 1, it is characterised in that there is end cap to be used to fix with connecting at the top of heater
Connect.
10. heater assembly according to claim 1, it is characterised in that each level assembly of heater is by being bolted, often
The upper shell of level-one is connected with the lower shell of upper level, and lower shell is connected with the upper shell of next stage, and threaded hole is in cylinder
Base on span centre distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720970565.1U CN207366210U (en) | 2017-08-04 | 2017-08-04 | A kind of heater assembly of heating flowing gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720970565.1U CN207366210U (en) | 2017-08-04 | 2017-08-04 | A kind of heater assembly of heating flowing gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207366210U true CN207366210U (en) | 2018-05-15 |
Family
ID=62422971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720970565.1U Active CN207366210U (en) | 2017-08-04 | 2017-08-04 | A kind of heater assembly of heating flowing gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207366210U (en) |
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2017
- 2017-08-04 CN CN201720970565.1U patent/CN207366210U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180810 Address after: 053400 No. 94 Ningwu West Road, Wuyi Economic Development Zone, Hengshui, Hebei Patentee after: Hebei bit Power Technology Co.,Ltd. Address before: 100010 room 1009, Beijing science and technology building, 9 Zhongguancun South Street, Haidian District, Beijing. Patentee before: BEIJING BITEC Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 596, Xingwang Road, Wuyi County, Hengshui City, Hebei Province 053400 Patentee after: Hebei bit Power Technology Co.,Ltd. Address before: 053400 No. 94 Ningwu West Road, Wuyi Economic Development Zone, Hengshui, Hebei Patentee before: Hebei bit Power Technology Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 596, Xingwang Road, Wuyi County, Hengshui City, Hebei Province 053400 Patentee after: Hebei Zhongju Machinery Manufacturing Co.,Ltd. Address before: No. 596, Xingwang Road, Wuyi County, Hengshui City, Hebei Province 053400 Patentee before: Hebei bit Power Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |