CN206397573U - A kind of humidity control system of ternary catalyzing unit - Google Patents
A kind of humidity control system of ternary catalyzing unit Download PDFInfo
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- CN206397573U CN206397573U CN201720072300.XU CN201720072300U CN206397573U CN 206397573 U CN206397573 U CN 206397573U CN 201720072300 U CN201720072300 U CN 201720072300U CN 206397573 U CN206397573 U CN 206397573U
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- catalyzing unit
- ternary catalyzing
- exhaust gas
- gas room
- blast pipe
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Abstract
The utility model is related to Tailgas purifier of engine technical field, a kind of specific humidity control system of ternary catalyzing unit, including blast pipe, ternary catalyzing unit and temperature-adjusting device, and the temperature-adjusting device includes heat power device and air cooler；The heat power device includes heat power device housing, piston rod and plug；The air cooler includes air cooler housing, heat exchanger tube and blower fan.Relative to prior art, the beneficial effects of the utility model are：The exhaust temperature into ternary catalyzing unit can be automatically adjusted as needed, make ternary catalyzing unit be maintained under optimum working temperature to work, ensure ternary catalyzing unit Effec-tive Function, prevent ternary catalyzing unit from, because long-time is caused the reduction of its performance by high temperature or even is damaged, extending the service life of ternary catalyzing unit.
Description
Technical field
The utility model is related to Tailgas purifier of engine technical field, a kind of specific temperature adjustment of ternary catalyzing unit
System.
Background technology
Ternary catalyzing unit, is mounted in most important outer purifier in automobile exhaust system, and it can be by vehicle exhaust
The pernicious gases such as CO, HC and NOx of discharge are changed into harmless carbon dioxide, water and nitrogen by oxidation and reduction.When
When the vehicle exhaust of high temperature is by purifier, the catalyst in ternary catalyzing unit will strengthen the work of tri- kinds of gas of CO, HC and NOx
Property, promote it to carry out certain oxidationreduction chemical reaction, wherein CO is oxidized into colourless, nontoxic titanium dioxide at high temperature
Carbon gas；HC compounds are oxidized to water (H20) and carbon dioxide at high temperature；NOx is reduced into nitrogen and oxygen.Three kinds of harmful gas
Body becomes innocuous gas, vehicle exhaust is purified.
Ternary catalyzing unit includes housing, and enclosure interior is provided with carrier and pad, and carrier is provided with honeycomb arrangement
Hole, for carrying catalyst, pad is coated on carrier.The optimum working temperature of ternary catalyzing unit is 400 DEG C ~ 800 DEG C, works as temperature
When degree is less than 200 DEG C, CO, HC oxidation reaction and NOx reduction reaction can be influenceed, when temperature is more than 1000 DEG C, will be led
Carrier coating structural transformation in ternary catalyzing unit is caused, its surface area is strongly reduced, is used as the noble metal component itself of catalyst
Also sintering, aggregation and chemical change can be produced, high temperature can cause catalyst activity and oxygen storage capacity to reduce, cause ternary simultaneously
Catalyst converter hydraulic performance decline, can also cause the thermal stretching of housing, and then cause the damage of housing, influence the use longevity of ternary catalyzing unit
Life.
Utility model content
The purpose of this utility model is that there is provided a kind of temperature of ternary catalyzing unit in order to solve above-mentioned the deficiencies in the prior art
Regulating system is spent, the exhaust temperature into ternary catalyzing unit can be automatically adjusted as needed, ternary catalyzing unit is maintained at
Worked under optimum working temperature, it is ensured that ternary catalyzing unit Effec-tive Function, prevent ternary catalyzing unit from being caused because of long-time by high temperature
The reduction of its performance is even damaged, and extends the service life of ternary catalyzing unit.
Technical problem to be solved in the utility model is realized using following technical scheme：A kind of temperature of ternary catalyzing unit
Spend regulating system, including blast pipe, ternary catalyzing unit and temperature-adjusting device, the air inlet of the blast pipe and ternary catalyzing unit
Connection.The temperature-adjusting device includes heat power device and air cooler；The heat power device includes heat power device housing, piston rod
And plug, the heat power device housing is fixed at the air inlet of ternary catalyzing unit, and heat power device housing is built with heat sensitive wax, institute
State piston rod to be slidably mounted in heat power device housing, the plug is connected with piston rod, and plug can block three-element catalytic
The air inlet of device, is provided with back-moving spring between plug and ternary catalyzing unit；The air cooler include air cooler housing, heat exchanger tube and
It is divided into upstream exhaust gas room, middle reaches cold air chamber and downstream exhaust gas room in blower fan, the air cooler housing, air cooler housing is provided with
Cold wind import and the cold wind outlet connected with middle reaches cold air chamber, the assembling is at cold wind import, the upstream exhaust gas room
Connected with downstream exhaust gas room by many heat exchanger tubes, the heat exchanger tube is located in the cold air chamber of middle reaches, provided with temperature in upstream exhaust gas room
Sensor is spent, the temperature sensor and blower fan are connected with ECU respectively；The blast pipe by two pipelines respectively with upstream tail
Air chamber and the connection of downstream exhaust gas room, are provided between blast pipe and upstream exhaust gas room by blast pipe upstream exhaust gas chamber one-way conduction
Check valve, is provided with by the check valve of blast pipe downstream exhaust gas chamber one-way conduction between blast pipe and downstream exhaust gas room.
The technical solution of the utility model also has：The heat exchanger tube includes inner and outer tubes, and said inner tube is coaxially set in
The inside of outer tube simultaneously forms the space not connected with middle reaches cold air chamber, and the head end of said inner tube is connected with upstream exhaust gas room, inner tube
Endcapped, inner tube be provided with multiple spurt holes, the end of the outer tube is connected with downstream exhaust gas room.Using this technology side
Case, high-temperature tail gas enters inner tube, under the percussion of air-flow, makes the laminar boundary layer between high-temperature tail gas and outer pipe surface disorderly
Fluidisation, enhances the convection heat transfer' heat-transfer by convection of high-temperature tail gas and cold wind, it is possible to increase heat exchange efficiency.
The technical solution of the utility model also has：The head end periphery of said inner tube and the head end of outer tube are welded and fixed.
The technical solution of the utility model also has：The air inlet of the ternary catalyzing unit is taper, the shape of the plug
The taper matched with the air inlet of ternary catalyzing unit.
The technical solution of the utility model also has：The check valve includes valve body, end cap, valve ball and tower spring, the valve
Bellmouth is provided with vivo, the end cap is fixed at the big footpath of bellmouth, end cap is provided with passage, the valve ball is located at cone
In shape hole and the path of bellmouth is had a diameter larger than, the tower spring is located between valve ball and end cap.
The technical solution of the utility model also has：The end cap is connected with valve body screw thread.
Operation principle of the present utility model：Tail gas enters ternary catalyzing unit by blast pipe, when high-temperature tail gas temperature is too high
When, heat sensitive wax expanded by heating stretches out piston rod, so that plug reduces the air inlet aperture of ternary catalyzing unit.In blast pipe
Pressure rise, a part of tail gas enters upstream exhaust gas room by check valve, and temperature sensor detects temperature rise and by signal
ECU is transferred to, cold wind is delivered in the cold air chamber of middle reaches, exchanged heat with the tail gas in heat exchanger tube by ECU control blower fan works.
Tail gas after heat exchange flows back to blast pipe and mixed with high-temperature tail gas.Tail gas after cooling makes heat sensitive wax cooling meat, and plug is resetting
The aperture of ternary catalyzing unit is improved in the presence of spring.
Relative to prior art, the beneficial effects of the utility model are：It can automatically adjust as needed and enter ternary
The exhaust temperature of catalyst converter, makes ternary catalyzing unit be maintained under optimum working temperature and works, it is ensured that ternary catalyzing unit Effec-tive Function,
Prevent ternary catalyzing unit from, because long-time is caused the reduction of its performance by high temperature or even is damaged, extending the use longevity of ternary catalyzing unit
Life.
Brief description of the drawings
Fig. 1 is the front view of the humidity control system of ternary catalyzing unit.
Fig. 2 is the partial enlarged drawing in Figure 1A portions.
Fig. 3 be Figure 1B to view.
In figure：1st, blast pipe, 2, ternary catalyzing unit, 3, heat power device housing, 4, piston rod, 5, plug, 6, heat sensitive wax, 7,
Back-moving spring, 8, air cooler housing, 9, blower fan, 10, upstream exhaust gas room, 11, middle reaches it is air-cooled, 12, downstream exhaust gas room, 13, cold
Wind inlet, 14, temperature sensor, 15, inner tube, 16, outer tube, 17, spurt hole, 18, valve body, 19, end cap, 20, valve ball, 21,
Tower spring, 22, bellmouth, 23, passage, 24, cold wind outlet.
Embodiment
For can understand illustrate this programme technical characterstic, below according to accompanying drawing the utility model embodiment is made into
One step explanation.
As shown in Fig. 1 ~ Fig. 3, a kind of humidity control system of ternary catalyzing unit, including blast pipe 1, the and of ternary catalyzing unit 2
Temperature-adjusting device, blast pipe 1 is connected with the air inlet of ternary catalyzing unit 2.
Temperature-adjusting device includes heat power device and air cooler.
Heat power device includes heat power device housing 3, piston rod 4 and plug 5.Heat power device housing 3 is fixed on three-element catalytic
At the air inlet of device 2, heat power device housing 3 is built with heat sensitive wax 6, and piston rod 4 is slidably mounted on heat power device housing 3
It is interior.Plug 5 is connected with piston rod 4, and the air inlet of ternary catalyzing unit 2 is taper, the shape of plug 5 and entering for ternary catalyzing unit 2
The taper of gas port matching, plug 5 can block the air inlet of ternary catalyzing unit 2, provided with reset between plug 5 and ternary catalyzing unit 2
Spring 7.
Air cooler includes air cooler housing 8, heat exchanger tube and blower fan 9.Be divided into air cooler housing 8 upstream exhaust gas room 10,
Middle reaches cold air chamber 11 and downstream exhaust gas room 12, air cooler housing 8 be provided with the cold wind import 13 that is connected with middle reaches cold air chamber 11 and
Cold wind outlet 24, blower fan 9 is arranged at cold wind import 13.Upstream exhaust gas room 10 and downstream exhaust gas room 12 are connected by many heat exchanger tubes
Logical, heat exchanger tube is located in middle reaches cold air chamber 11, and heat exchanger tube includes inner tube 15 and outer tube 16, and inner tube 15 is coaxially set in outer tube 16
Inside, the head end of the head end periphery and outer tube 16 of inner tube 15 is welded and fixed, formed between inner tube 15 and outer tube 16 not with middle reaches
The space that cold air chamber 11 connects, the head end of inner tube 15 is connected with upstream exhaust gas room 10, the endcapped of inner tube 15, is set in inner tube 15
There are multiple spurt holes 17, the end of outer tube 16 is connected with downstream exhaust gas room 12.Temperature sensor 14 is provided with upstream exhaust gas room 10,
Temperature sensor 14 and blower fan 9 are connected with ECU respectively.
Blast pipe 1 is connected with upstream exhaust gas room 10 and downstream exhaust gas room 12 respectively by two pipelines, blast pipe 1 and upstream
Be provided between exhaust gas chamber 10 by the check valve of the upstream exhaust gas chamber one-way conduction of blast pipe 1, blast pipe 1 and downstream exhaust gas room 12 it
Between be provided with by the check valve of the downstream one-way conduction of exhaust gas chamber 12 of blast pipe 1.Check valve includes valve body 18, end cap 19, valve ball
20 and tower spring 21, bellmouth 22 is provided with valve body 18, and end cap 19 is connected through a screw thread at the big footpath for being fixed on bellmouth 22, end cap
19 are provided with passage 23, and valve ball 20 is located in bellmouth 22 and has a diameter larger than the path of bellmouth 22, tower spring 21
Between valve ball 20 and end cap 19.
Operation principle of the present utility model：Tail gas enters ternary catalyzing unit 2 by blast pipe 1, when high-temperature tail gas temperature mistake
Gao Shi, heat sensitive wax expanded by heating stretches out piston rod 4, so that plug 5 reduces the air inlet aperture of ternary catalyzing unit 2.Exhaust
Pressure rise in pipe 1, tail gas enters upstream exhaust gas room 10 by check valve, and temperature sensor 14 detects temperature rise and will letter
ECU number is transferred to, ECU control blower fans 9 work, cold wind is delivered in middle reaches cold air chamber 11, carried out with the tail gas in heat exchanger tube
Heat exchange.Tail gas after heat exchange flows back to blast pipe 1 and mixed with high-temperature tail gas.Tail gas after cooling makes the cooling meat of heat sensitive wax 6, plug
5 improve the air inlet aperture of ternary catalyzing unit 2 in the presence of back-moving spring 7.
Embodiment of the present utility model is elaborated above in conjunction with accompanying drawing, but the utility model is not limited to
Embodiment is stated, in the knowledge that those of ordinary skill in the art possess, the utility model objective can also not departed from
On the premise of make a variety of changes.
Claims (6)
1. a kind of humidity control system of ternary catalyzing unit, including blast pipe（1）And ternary catalyzing unit（2）, the blast pipe（1）
With ternary catalyzing unit（2）Air inlet connection, it is characterised in that：Also include temperature-adjusting device, the temperature-adjusting device bag
Include heat power device and air cooler；The heat power device includes heat power device housing（3）, piston rod（4）And plug（5）, the heat
Dynamic equipment housing（3）It is fixed on ternary catalyzing unit（2）Air inlet at, heat power device housing（3）Built with heat sensitive wax（6）, institute
State piston rod（4）It is slidably mounted on heat power device housing（3）It is interior, the plug（5）With piston rod（4）Connection, plug（5）
Ternary catalyzing unit can be blocked（2）Air inlet, plug（5）With ternary catalyzing unit（2）Between be provided with back-moving spring（7）；The wind
Cooler includes air cooler housing（8）, heat exchanger tube and blower fan（9）, the air cooler housing（8）Inside it is divided into upstream exhaust gas room
（10）, middle reaches cold air chamber（11）With downstream exhaust gas room（12）, air cooler housing（8）It is provided with and middle reaches cold air chamber（11）Connection
Cold wind import（13）With cold wind outlet（24）, the blower fan（9）Installed in cold wind import（13）Place, the upstream exhaust gas room（10）
With downstream exhaust gas room（12）Connected by many heat exchanger tubes, the heat exchanger tube is located at middle reaches cold air chamber（11）It is interior, upstream exhaust gas room
（10）It is interior to be provided with temperature sensor（14）, the temperature sensor（14）And blower fan（9）It is connected respectively with ECU；The blast pipe
（1）By two pipelines respectively with upstream exhaust gas room（10）With downstream exhaust gas room（12）Connection, blast pipe（1）With upstream exhaust gas room
（10）Between be provided with by blast pipe（1）The upstream check valve of exhaust gas chamber one-way conduction, blast pipe（1）With downstream exhaust gas room（12）
Between be provided with by blast pipe（1）Downstream exhaust gas chamber（12）The check valve of one-way conduction.
2. the humidity control system of ternary catalyzing unit according to claim 1, it is characterised in that：The heat exchanger tube includes interior
Pipe（15）And outer tube（16）, said inner tube（15）Coaxially it is set in outer tube（16）Inside and formed not with middle reaches cold air chamber（11）
The space of connection, said inner tube（15）Head end and upstream exhaust gas room（10）Connection, inner tube（15）Endcapped, inner tube（15）
It is provided with multiple spurt holes（17）, the outer tube（16）End and downstream exhaust gas room（12）Connection.
3. the humidity control system of ternary catalyzing unit according to claim 2, it is characterised in that：Said inner tube（15）Head
Hold periphery and outer tube（16）Head end be welded and fixed.
4. according to the humidity control system of any described ternary catalyzing unit of claim 1 ~ 3, it is characterised in that：The ternary is urged
Change device（2）Air inlet be taper, the plug（5）Shape and ternary catalyzing unit（2）Air inlet matching taper.
5. according to the humidity control system of any described ternary catalyzing unit of claim 1 ~ 3, it is characterised in that：The check valve
Including valve body（18）, end cap（19）, valve ball（20）With tower spring（21）, the valve body（18）It is interior to be provided with bellmouth（22）, it is described
End cap（19）It is fixed on bellmouth（22）Big footpath at, end cap（19）It is provided with passage（23）, the valve ball（20）It is located at
Bellmouth（22）It is interior and have a diameter larger than bellmouth（22）Path, the tower spring（21）Positioned at valve ball（20）With end cap
（19）Between.
6. the humidity control system of ternary catalyzing unit according to claim 5, it is characterised in that：The end cap（19）With valve
Body（18）Threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720072300.XU CN206397573U (en) | 2017-01-20 | 2017-01-20 | A kind of humidity control system of ternary catalyzing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720072300.XU CN206397573U (en) | 2017-01-20 | 2017-01-20 | A kind of humidity control system of ternary catalyzing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206397573U true CN206397573U (en) | 2017-08-11 |
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ID=59519890
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720072300.XU Active CN206397573U (en) | 2017-01-20 | 2017-01-20 | A kind of humidity control system of ternary catalyzing unit |
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| Country | Link |
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| CN (1) | CN206397573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788632A (en) * | 2022-03-10 | 2023-03-14 | 南通普盛动力有限公司 | Engine tail gas treatment method |
-
2017
- 2017-01-20 CN CN201720072300.XU patent/CN206397573U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788632A (en) * | 2022-03-10 | 2023-03-14 | 南通普盛动力有限公司 | Engine tail gas treatment method |
| CN115788632B (en) * | 2022-03-10 | 2024-02-06 | 南通普盛动力有限公司 | Engine tail gas treatment method |
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