CN207315492U - A kind of automatically controlled urea nozzle detection device that steady pressure output is provided - Google Patents
A kind of automatically controlled urea nozzle detection device that steady pressure output is provided Download PDFInfo
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- CN207315492U CN207315492U CN201721423161.7U CN201721423161U CN207315492U CN 207315492 U CN207315492 U CN 207315492U CN 201721423161 U CN201721423161 U CN 201721423161U CN 207315492 U CN207315492 U CN 207315492U
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- pressure chamber
- pressure
- automatically controlled
- detection device
- urea nozzle
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Abstract
It the utility model is related to a kind of automatically controlled urea nozzle detection device that steady pressure output is provided, including sink, diaphragm pump, pressure chamber, accumulator, adjustable counterbalance valve, the water tank is equipped with urea liquid, the sink is connected with the input terminal of diaphragm pump, the output terminal of the diaphragm pump is connected with pressure chamber, some nozzles are connected with the pressure chamber, it is equipped with pressure gauge at the same time, the side of the pressure chamber is connected with accumulator, the opposite side of pressure chamber is equipped with counterbalance valve, and the outlet of the counterbalance valve is connected with sink.The detection device of urea nozzle provided by the utility model can externally export the pressure value of 5 ± 0.1bar, and the detection pressure stablized can be received to avoid erroneous judgement of the automatically controlled urea nozzle in detection process and by mistake, the reliability and detection efficiency of the detection greatly improved.
Description
Technical field
The utility model is related to a kind of detection device of urea nozzle, more particularly to it is a kind of provide steady pressure output
Automatically controlled urea nozzle detection device.
Background technology
Main pollutant is NOX in diesel engine vent gas, to cause diesel engine automobile to reach national emission regulation demands, I
The main technological route of state is exactly selective catalytic reduction (SCR), and reducing agent is used as by the use of urea liquid in SCR aftertreatment system
To remove the nitrogen oxides in diesel engine vent gas, so as to reach the requirement of the corresponding Abgasgesetz of country.The work of the system is former
Reason is：Tail gas enters exhaust pipe, and urea nozzle is provided with exhaust pipe, sprays into urea for vehicle solution, and urea is sent out at high temperature
Generate ammonia after unboiled water solution and pyrolytic reaction, inside catalyst converter, reduction reaction occurs for ammonia and nitrogen oxides, generation nitrogen and
Water, so as to have the function that cleaning of off-gas.
, be to all automatically controlled urea nozzle full inspections to be dispatched from the factory, the link in order to ensure the uniformity of all products that dispatch from the factory
Mainly reject the larger urea nozzle of accuracy error.The automatically controlled urea nozzle test device used now matches somebody with somebody combined pressure for diaphragm pump
Force snesor, the pressure stability of test device is realized by this automatically controlled mode.But this device range of pressure fluctuations is larger,
Detection for automatically controlled urea nozzle is easy to judge by accident and misses receipts.The front and rear test of same branch nozzle may have two kinds of differences twice
Result.
Utility model content
The utility model is for insufficient existing for existing automatically controlled urea nozzle test device, there is provided one kind can provide stabilization
The automatically controlled urea nozzle detection device of pressure output.
The technical solution that the utility model solves above-mentioned technical problem is as follows：
It is a kind of provide steady pressure output automatically controlled urea nozzle detection device, including sink, diaphragm pump, pressure chamber,
Accumulator, adjustable counterbalance valve, the water tank is equipped with urea liquid, the sink is connected with the input terminal of diaphragm pump, described
The output terminal of diaphragm pump is connected with pressure chamber, some nozzles is connected with the pressure chamber, while be equipped with pressure gauge, the pressure
The side of power chamber is connected with accumulator, and the opposite side of pressure chamber is equipped with counterbalance valve, and the outlet of the counterbalance valve is connected with sink.
Based on the above technical solutions, the utility model can also do following improvement.
Further, 8 nozzles are connected with the pressure chamber.
Further, it is additionally provided with manual switch valve between the pressure chamber and nozzle.
In use, diaphragm pump provides pressure to above-mentioned device for detection device, accumulator and pressure chamber stablize and
Pressure is stored, counterbalance valve provides the pressure value needed for detection device, detects back pressure when the pressure value of device is less than setting value
Valve is closed；Detection device pressure opens pressure release higher than setting value counterbalance valve.
The beneficial effects of the utility model are：
The detection device of urea nozzle provided by the utility model can externally export the pressure value of 5 ± 0.1bar, stablize
Detection pressure can to avoid erroneous judgement of the automatically controlled urea nozzle in detection process and by mistake receive, the reliability of the detection greatly improved
And detection efficiency.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model detection device；
In Fig. 1,1, sink；2nd, diaphragm pump；3rd, pressure chamber；4th, accumulator；5th, counterbalance valve；6th, pressure gauge；7th, nozzle；8th, hand
Dynamic switch valve
Embodiment
The principle and feature of the utility model are described below in conjunction with example, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
A kind of automatically controlled urea nozzle detection device that steady pressure output is provided, as shown in Figure 1, including sink 1, diaphragm
Pump 2, pressure chamber 3, accumulator 4, counterbalance valve 5, sink is interior to be equipped with urea liquid, and sink is connected with the input terminal of diaphragm pump, film
The output terminal of piece pump is connected with pressure chamber, and 8 nozzles are uniformly connected with pressure chamber, hand is additionally provided between nozzle and pressure chamber
Switch valve 8 to be moved, pressure gauge 6 is equipped with the same time on pressure chamber, the side of pressure chamber is connected with accumulator, and opposite side is equipped with counterbalance valve,
The outlet of counterbalance valve is connected with sink.
In use, diaphragm pump extracts the urea liquid in sink and urea liquid is transported to pressure above device
In chamber.Accumulator is directly connected to above pressure chamber.The knob of counterbalance valve is adjusted, sets back-pressure as 5bar.Counterbalance valve is straight
Pressure chamber is connected in succession.Tested nozzle pressure power from pressure chamber.Manual switch is installed convenient between pressure chamber and nozzle
Replace nozzle.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modification, equivalent replacement, improvement and so on, should be included in the guarantor of the utility model
Within the scope of shield.
Claims (3)
1. a kind of automatically controlled urea nozzle detection device that steady pressure output is provided, it is characterised in that including sink, diaphragm
Pump, pressure chamber, accumulator, adjustable counterbalance valve, the water tank is equipped with urea liquid, the input terminal phase of the sink and diaphragm pump
Connection, the output terminal of the diaphragm pump are connected with pressure chamber, some nozzles are connected with the pressure chamber, while be equipped with pressure
Table, the side of the pressure chamber are connected with accumulator, and the opposite side of pressure chamber is equipped with counterbalance valve, the outlet of the counterbalance valve and water
Groove is connected.
2. automatically controlled urea nozzle detection device according to claim 1, it is characterised in that be connected with 8 on the pressure chamber
A nozzle.
3. automatically controlled urea nozzle detection device according to claim 1 or 2, it is characterised in that the pressure chamber and nozzle
Between be additionally provided with manual switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721423161.7U CN207315492U (en) | 2017-10-31 | 2017-10-31 | A kind of automatically controlled urea nozzle detection device that steady pressure output is provided |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721423161.7U CN207315492U (en) | 2017-10-31 | 2017-10-31 | A kind of automatically controlled urea nozzle detection device that steady pressure output is provided |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207315492U true CN207315492U (en) | 2018-05-04 |
Family
ID=62380142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721423161.7U Active CN207315492U (en) | 2017-10-31 | 2017-10-31 | A kind of automatically controlled urea nozzle detection device that steady pressure output is provided |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207315492U (en) |
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2017
- 2017-10-31 CN CN201721423161.7U patent/CN207315492U/en active Active
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