CN202954873U - Urea box used for diesel engine tail gas post-processing silicon controlled rectifier (SCR) system - Google Patents
Urea box used for diesel engine tail gas post-processing silicon controlled rectifier (SCR) system Download PDFInfo
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- CN202954873U CN202954873U CN 201220606525 CN201220606525U CN202954873U CN 202954873 U CN202954873 U CN 202954873U CN 201220606525 CN201220606525 CN 201220606525 CN 201220606525 U CN201220606525 U CN 201220606525U CN 202954873 U CN202954873 U CN 202954873U
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- diesel engine
- box body
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Abstract
The utility model relates to a urea box used for diesel engine tail gas post-processing silicon controlled rectifier (SCR) system. The urea box comprises a box body used for containing a urea solution, a box body cover component and a vent valve component, the box body cover component and the vent valve component are arranged on the box body, the box body comprises a stainless steel layer arranged on the inner layer and an engineering plastics layer arranged on the outer layer, the box body is provided with a cooling liquid inlet pipe and a cooling liquid outlet pipe which faces relative to the cooling liquid inlet pipe, space between the engineering plastics layer and the stainless steel layer is filled with diesel engine cooling liquid, the box body cover component is provided with a urea resorption liquid pipe which extends into the box body, and an electric heater and a engine cooling liquid radiator are arranged on a position, close to the lower end portion of the urea resorption liquid pipe, below the urea resorption liquid pipe. The urea box can completely meet requirements, for urea emitted amount, of a diesel engine in stages of start-up, idling, small load and full load in cold seasons, is free from supply failure of the urea solution of a liquid state, and therefore ensures that effective processing of diesel engine tail gas reaches a calibration emission standard.
Description
Technical field
The utility model relates to a kind of diesel motor exhaust reprocessing SCR technical field, what be specifically related to is a kind of diesel motor exhaust reprocessing SCR system urea box.
Background technique
The urea box that the diesel motor exhaust reprocessing SCR technology of selling on present stage market is used, the selective reduction that heating and melting speed is slow after there is icing of urea solution in cold zone (winter temperature is lower than-11 ℃), efficiency is low, can not be at short notice well-off urea liquid is participated in diesel engine starting, idling, little load, high-load operation are carried out, thereby make the NOX discharge excessive, befouling environment.And often there will be the supply discontinuity of liquid urea solution at the diesel engine run duration, thereby be difficult to the effective processing of diesel engine vent gas is reached the emission standard of timing signal.
The model utility content
For the deficiency existed on prior art, the utility model purpose be to provide one finish close can meet cold season diesel engine in starting, idling, little load, each stage of full load the demand to urea injecting quantity, and can melt fast icing diesel motor exhaust reprocessing SCR system urea box, not there will be the supply discontinuity of liquid urea solution at the diesel engine run duration, thereby fully ensure the emission standard that the effective processing of diesel engine vent gas is reached to timing signal.
To achieve these goals, the utility model is to realize by the following technical solutions.
Diesel motor exhaust reprocessing SCR system urea box, it comprises for the casing of splendid attire urea liquid, is arranged on Box Cover assembly and vent valve assembly on casing; It is characterized in that, described casing comprises the stainless steel lining that is arranged on internal layer and is arranged on the outer field engineering plastic bed of material, be provided with the cooling liquid inlet duct on described casing and at the coolant outlet with cooling liquid inlet duct opposing side, be full of diesel oil motivation cooling liquid is arranged between the described engineering plastic bed of material and stainless steel lining, can prevent rocking of cooling liquid; Be provided with the urea stretched in casing on described cover assembly and inhale liquid return pipe, described urea inhale liquid return pipe below and be provided with electric heater and the engine coolant radiator to the emergency service of urea liquid amount for diesel engine starting, idling stage near the position that urea is inhaled the liquid return pipe underpart, so that the urea liquid melted can be smoothly by the timely sucking-off of pick-up tube, while dealing with diesel engine starting, idling to the needs of urea liquid amount.
Further, described case lid assembly connects with casing and seals by the spiral mouth, described vent valve assembly by scyewed joint to casing.
Further, what described vent valve assembly adopted is two-way air vent valve, owing to having adopted two-way air vent valve, make when opening the Box Cover of urea casing simultaneously, because the setting value of casing inside and outside differential pressure is less, make firmly and evenly not there will be while opening Box Cover and will use more energetically, also can prevent urea liquid outwards the splashing when Box Cover is opened in casing simultaneously.
The entering of impurity when preventing urea box and extraneous the ventilation also is provided with the integration air filter cleaner on described two-way air vent valve, for the air that enters to two-way air vent valve, filtered.
Further, described Box Cover assembly comprises that lid and the radiator arranged on lid advance liquid return pipe, and described lid also is equipped with for measuring that the urea liquid liquid level detects the liquid level sensor of urea box urea amount and for measuring the temperature transducer of urea box urea liquid temperature by strut.
As preferably, above-mentioned electric heater is disc-shaped, the heat diffusion area when increasing electric heating; Described engine coolant radiator is the loop wire zigzag shape, to increase the heat diffusion area of built-in cooling water radiator.Electric heater and engine coolant radiator are all concentrated the just following and close pick-up tube that is placed on the urea drain pipe, so that the urea liquid melted can be smoothly by the timely sucking-off of pick-up tube.
As preferably, also be provided with solenoid valve on described cooling liquid inlet duct or coolant outlet, be used for turn-offing the cooling liquid from diesel engine.
Thereby liquid level sensor detects the urea amount of urea box for the liquid level of measuring urea liquid, when urea liquid during lower than minimum flow liquid level sensor produce voltage signal and reported to the police.Temperature transducer is for measuring the temperature of urea box urea liquid, when the urea liquid temperature reaches the CLV ceiling limit value of a certain setting, temperature transducer produces voltage signal, and the DCU of notice SCR system, and turn-off the cooling liquid from diesel engine by being arranged on towards the solenoid valve of urea box (cooling water radiator, double-layer box body) cooling liquid pipeline.
The utility model adopts the structure casing of inside and outside bilayer, reach melt fast in a large number icing urea liquid meet diesel engine by little load the demand to high-load operation, internal layer adopts steel more to be conducive to the heat conduction, the outer insulation that adopts engineering plastics more to be conducive to hot cooling liquid; Simultaneously, internal layer is full of cooling liquid with skin can prevent rocking back and forth of cooling liquid, can carry out significantly improving thawing speed and the thawing effect of the urea liquid that freezes; It has solved in traditional electrical heating cold season and case the requirement of carrying out tail gas NOX processing when built-in freezing mixture radiator forwards large load to fast by little load after being difficult for providing enough liquid urea solution to diesel engine starting, complete close can meet cold season diesel engine in starting, idling, little load, each stage of full load the demand to urea injecting quantity, and not there will be the supply discontinuity of liquid urea solution at the diesel engine run duration, thereby fully ensure the emission standard that the effective processing of diesel engine vent gas is reached to timing signal.
The accompanying drawing explanation
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is structural representation of the present utility model.
In figure: 1, casing; 2, Box Cover assembly; 3, vent valve assembly; 4, stainless steel lining; 5, the engineering plastic bed of material; 6, cooling liquid inlet duct; 7, coolant outlet; 8, electric heater; 9, engine coolant radiator; 10, liquid level sensor; 11, temperature transducer; 12, wire harness; 13, radiator advances liquid return pipe; 14, urea liquid is inhaled liquid return pipe; 15, air-strainer; 16, two-way air vent valve.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
As shown in Figure 1, a kind of use of the present embodiment can be melted icing new urea case fast diesel motor exhaust reprocessing SCR is technical, comprises casing 1, Box Cover assembly 2 and vent valve assembly 3.Connect with casing and seal by the spiral mouth at case lid assembly top, the vent valve assembly by scyewed joint to the top of casing.The casing of the present embodiment two-layerly consists of inside and outside, internal layer is stainless steel lining 4, skin is the corrosion resistant engineering plastic bed of material 5, the structure of the inside and outside bilayer of casing be for reach melt fast in a large number icing urea liquid meet diesel engine by little load the demand to high-load operation, internal layer adopts steel more to be conducive to the heat conduction, the outer insulation that adopts engineering plastics more to be conducive to hot cooling liquid.And firmly more even when opening Box Cover, also can effectively prevent urea liquid outwards the splashing when Box Cover is opened in casing simultaneously.
The casing top is equipped with diesel engine cooling liquid inlet duct 6, and diesel engine coolant outlet 7 is installed above the casing with the inlet duct opposing side.Be full of between the engineering plastic bed of material and stainless steel lining diesel oil motivation cooling liquid is arranged, institute's casing skin is full of diesel oil motivation cooling liquid, and layer is full of cooling liquid with skin can prevent rocking back and forth of cooling liquid.
In the present embodiment, the Box Cover assembly comprises electric heater 8, cooling water radiator 9, and liquid level sensor 10, temperature transducer 11, wire harness 12, radiator are inhaled liquid return pipe 13, urea liquid advances liquid return pipe 14.Be provided with the urea stretched in casing and inhale liquid return pipe 13 on cover assembly, described urea is inhaled the below of liquid return pipe and is provided with electric heater and the engine coolant radiator to the emergency service of urea liquid amount for diesel engine starting, idling stage near the position that urea is inhaled the liquid return pipe underpart, so that the urea liquid melted can be smoothly by the timely sucking-off of pick-up tube, while dealing with diesel engine starting, idling to the needs of urea liquid amount.Also have liquid level sensor and temperature transducer to install on lid by strut, this strut is inserted in casing, and insert in urea liquid, thereby liquid level sensor detects the urea amount of urea box for the liquid level of measuring urea liquid, when urea liquid during lower than minimum flow liquid level sensor produce voltage signal and reported to the police.Temperature transducer is for measuring the temperature of urea box urea liquid, when the urea liquid temperature reaches the CLV ceiling limit value of a certain setting, temperature transducer produces voltage signal, and the DCU of notice SCR system, and turn-off the cooling liquid from diesel engine by being arranged on towards the solenoid valve of urea box (cooling water radiator, double-layer box body) cooling liquid pipeline.
Heat diffusion area when above-mentioned electric heater 8 is disc-shaped with the increase electric heating, engine coolant radiator 9 is the loop wire zigzag shape to increase the heat diffusion area of built-in cooling water radiator.Electric heater 8 and engine coolant radiator 9 are all concentrated the just following and close pick-up tube that is placed on the urea drain pipe, so that the urea liquid melted can be smoothly by the timely sucking-off of pick-up tube.
It should be noted that the vent valve assembly is comprised of air-strainer 15 and two-way air vent valve 16.Air-strainer 15 is arranged on two-way air vent valve 16, for the air that enters to two-way air vent valve, is filtered, and while preventing urea box and extraneous the ventilation, impurity enters in casing.Two-way air vent valve 16 is installed the top of casing by the spiral mouth, owing to having adopted two-way air vent valve, make when opening the Box Cover of urea casing simultaneously, because the setting value of casing inside and outside differential pressure is less, make firmly and evenly not there will be while opening Box Cover and will use more energetically, also can prevent urea liquid outwards the splashing when Box Cover is opened in casing simultaneously.
The utility model in use, thereby liquid level sensor detects the urea amount of urea box for the liquid level of measuring urea liquid, when urea liquid during lower than minimum flow liquid level sensor produce voltage signal and reported to the police.Temperature transducer is for measuring the temperature of urea box urea liquid, when the urea liquid temperature reaches the CLV ceiling limit value of a certain setting, temperature transducer produces voltage signal, and the DCU of notice SCR system, and turn-off the cooling liquid from diesel engine by being arranged on towards the solenoid valve of urea box (cooling water radiator, double-layer box body) cooling liquid pipeline, wire harness is used for, for electric heater provides electric power, the voltage signal of sensor being passed to the DCU of SCR simultaneously.
Based on above-mentioned, be originally that model utility adopts said structure, can carry out significantly improving the thawing speed of the urea liquid that freezes and melt effect.Electric heater is mainly used in the emergency service that diesel engine starting, idling stage need the urea liquid amount.It has solved in traditional electrical heating cold season and case the requirement of carrying out tail gas NOX processing when built-in freezing mixture radiator forwards large load to fast by little load after being difficult for providing enough liquid urea solution to diesel engine starting.This technology provide one finish close can meet cold season diesel engine in starting, idling, little load, each stage of full load the demand to urea injecting quantity, and not there will be the supply discontinuity of liquid urea solution at the diesel engine run duration, thereby fully ensure the emission standard standard that the effective processing of diesel engine vent gas is reached to timing signal.
And owing to having adopted two-way air vent valve, make when opening the Box Cover of urea casing simultaneously, because the setting value of casing inside and outside differential pressure is less, make firmly and evenly not there will be while opening Box Cover and will use more energetically, also can prevent urea liquid outwards the splashing when Box Cover is opened in casing simultaneously.
Above demonstration and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. diesel motor exhaust reprocessing SCR system urea box, it comprises for the casing of splendid attire urea liquid, is arranged on Box Cover assembly and vent valve assembly on casing; It is characterized in that, described casing comprises the stainless steel lining that is arranged on internal layer and is arranged on the outer field engineering plastic bed of material, be provided with the cooling liquid inlet duct on described casing and, at the coolant outlet with cooling liquid inlet duct opposing side, be full of between the described engineering plastic bed of material and stainless steel lining diesel oil motivation cooling liquid is arranged; Be provided with the urea stretched in casing on described cover assembly and inhale liquid return pipe, described urea inhale liquid return pipe below and be provided with electric heater and the engine coolant radiator to the emergency service of urea liquid amount for diesel engine starting, idling stage near the position that urea is inhaled the liquid return pipe underpart.
2. diesel motor exhaust reprocessing SCR system urea box according to claim 1, is characterized in that, described case lid assembly connects with casing and seals by the spiral mouth, described vent valve assembly by scyewed joint to casing.
3. diesel motor exhaust reprocessing SCR system urea box according to claim 1 and 2, is characterized in that, what described vent valve assembly adopted is two-way air vent valve.
4. diesel motor exhaust reprocessing SCR system urea box according to claim 3, is characterized in that, also is provided with the integration air filter cleaner on described two-way air vent valve.
5. diesel motor exhaust reprocessing SCR system urea box according to claim 1 and 2, it is characterized in that, described Box Cover assembly comprises that lid and the radiator arranged on lid advance liquid return pipe, and described lid also is equipped with for measuring that the urea liquid liquid level detects the liquid level sensor of urea box urea amount and for measuring the temperature transducer of urea box urea liquid temperature by strut.
6. diesel motor exhaust reprocessing SCR system urea box according to claim 1, it is characterized in that, described electric heater is disc-shaped, described engine coolant radiator is the loop wire zigzag shape, and described electric heater and engine coolant radiator are all concentrated the just following and close pick-up tube that is placed on the urea drain pipe.
7. diesel motor exhaust reprocessing SCR system urea box according to claim 1, is characterized in that, on described cooling liquid inlet duct or coolant outlet, also is provided with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606525 CN202954873U (en) | 2012-11-16 | 2012-11-16 | Urea box used for diesel engine tail gas post-processing silicon controlled rectifier (SCR) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606525 CN202954873U (en) | 2012-11-16 | 2012-11-16 | Urea box used for diesel engine tail gas post-processing silicon controlled rectifier (SCR) system |
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| Publication Number | Publication Date |
|---|---|
| CN202954873U true CN202954873U (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220606525 Expired - Fee Related CN202954873U (en) | 2012-11-16 | 2012-11-16 | Urea box used for diesel engine tail gas post-processing silicon controlled rectifier (SCR) system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488420A (en) * | 2017-09-12 | 2019-03-19 | 通用汽车环球科技运作有限责任公司 | Diesel exhaust fluid system |
| CN110552769A (en) * | 2019-09-18 | 2019-12-10 | 山推工程机械股份有限公司 | Control method of tail gas aftertreatment system and tail gas aftertreatment system |
| CN111075542A (en) * | 2015-06-27 | 2020-04-28 | 曼卡车和巴士欧洲股份公司 | Reductant tank with integrated fluid passages for conducting heated fluid |
| CN112096493A (en) * | 2020-11-23 | 2020-12-18 | 山东艾泰克环保科技股份有限公司 | Integrated form is constant temperature equipment for urea case assembly |
-
2012
- 2012-11-16 CN CN 201220606525 patent/CN202954873U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075542A (en) * | 2015-06-27 | 2020-04-28 | 曼卡车和巴士欧洲股份公司 | Reductant tank with integrated fluid passages for conducting heated fluid |
| CN109488420A (en) * | 2017-09-12 | 2019-03-19 | 通用汽车环球科技运作有限责任公司 | Diesel exhaust fluid system |
| CN109488420B (en) * | 2017-09-12 | 2021-02-09 | 通用汽车环球科技运作有限责任公司 | Diesel engine exhaust treatment fluid system |
| CN110552769A (en) * | 2019-09-18 | 2019-12-10 | 山推工程机械股份有限公司 | Control method of tail gas aftertreatment system and tail gas aftertreatment system |
| CN110552769B (en) * | 2019-09-18 | 2021-07-30 | 山推工程机械股份有限公司 | Control method of tail gas aftertreatment system and tail gas aftertreatment system |
| CN112096493A (en) * | 2020-11-23 | 2020-12-18 | 山东艾泰克环保科技股份有限公司 | Integrated form is constant temperature equipment for urea case assembly |
| CN112096493B (en) * | 2020-11-23 | 2021-02-05 | 山东艾泰克环保科技股份有限公司 | Integrated form is constant temperature equipment for urea case assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20131116 |