CN202693236U - Pneumatic-type EGR (exhaust gas recycle) valve detecting device - Google Patents
Pneumatic-type EGR (exhaust gas recycle) valve detecting device Download PDFInfo
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- CN202693236U CN202693236U CN 201220310912 CN201220310912U CN202693236U CN 202693236 U CN202693236 U CN 202693236U CN 201220310912 CN201220310912 CN 201220310912 CN 201220310912 U CN201220310912 U CN 201220310912U CN 202693236 U CN202693236 U CN 202693236U
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Abstract
The utility model relates to a pneumatic-type EGR (exhaust gas recycle) valve detecting device. The device is characterized by comprising a gas source, a pressure regulating valve, a flowmeter, a three-way control valve, a computer and a control switch, wherein the pressure regulating valve is connected behind the gas source so that the pressure on a gas inlet end is kept constant; the flowmeter is connected on the rear end of the pressure regulating valve; the flowmeter is connected with the computer and one three-way control valve; the three-way control valve is used for controlling the flow direction of the gas; the gas source, the pressure regulating valve, the flowmeter, the three-way control valve and an EGR valve product form a gas circuit; and the computer is connected with the control switch and the three-way control valve. Advantages of the pneumatic-type EGR valve detecting device provided by the utility model are as follows: the detecting device design is reasonable, the use is convenient, the efficiency is high, the reliability is good, the application range is wide, misjudgment phenomena are avoided, the quality of outgoing products is guaranteed, and the human labor cost is greatly reduced at the same time.
Description
Technical field
The utility model relates to a kind of valve detection device.
Background technology
The EGR technology, namely EGR Technology (Exhaust Gas Recycle) is the emission-control equipment that arranges for harmful gas (NOx).It enters combusted cylinder after a part of exhaust cycle of engine is entered draft tube and fresh air mixes again, and to increase the thermal capacity of combination gas, the maximum temperature when reducing burning suppresses the generation of NOx; Simultaneously can reduce engine consumption.In said process, the EGR valve has been brought into play huge effect as the executive component of a key, the EGR valve is according to the engine actual working state, adjust the aperture of valve in good time and accurately, thereby adjust the exhausted air quantity that enters engine, then play the purpose that improves emission standard.
Pneumatic type EGR valve product in process of production, owing to being subject to the parts quality, the impacts such as assembly technology, the existence of substandard product is arranged all the time, showing as of substandard product: product leakage amount (referring to that mainly valve seat and orienting sleeve leak) exceeds standard, the sealing that namely represents product valve seal and body cavity and atmosphere exceeds required value, and the exhausted air quantity that causes entering engine exceeds standard.If this type of substandard product is used on automobile, will cause being short of power of automobile, discharge the appearance of problems such as exceeding standard.
Flow out for fear of substandard product, pneumatic type EGR valve production firm all can be detected one by one to the product of producing, existing market there is no special inspecting equipment, the detection method of present stage is to utilize manual detection fully, such shortcoming is, efficient is too low, and error is large, False Rate is high, and human cost is high.My company is the outflow of stopping unacceptable product, improves the quality of products, and improves detection efficiency, reduces human cost, developed described below efficient, accurately, pneumatic type EGR valve leak detecting device that automaticity is high.
Summary of the invention
The purpose of this utility model, provide a kind of efficient, accurately, the high pneumatic type EGR valve detection device of automaticity to be to remedy the deficiency of prior art, the needs that satisfy batch production and detect.
The technical scheme that the utility model adopts is: pneumatic type EGR valve detection device is characterized in that: comprise source of the gas, pressure regulator valve, flowmeter, three-way control valve, computing machine and gauge tap; Connect pressure regulator valve behind the source of the gas, make inlet end pressure keep constant, termination flowmeter behind the pressure regulator valve, flowmeter connects computing machine and a three-way control valve, and three-way control valve is used for the control gas flow; Source of the gas, pressure regulator valve, flowmeter, three-way control valve and gas circuit of EGR valve product formation; Computing machine connects gauge tap and three-way control valve.
The beneficial effects of the utility model are: pick-up unit is reasonable in design, and is easy to use, and efficient is high, and good reliability is applied widely, has stopped misjudgment phenomenon, and the quality of the product that guaranteed to dispatch from the factory has lowered human cost simultaneously greatly.
Below in conjunction with accompanying drawing, and by embodiment, the utility model is further described.
Description of drawings
Fig. 1 is detection schematic diagram of the present utility model.
Fig. 2 is the structural representation of the utility model embodiment.
Embodiment
Embodiment:
The valve seat amount of leakage detects: circuit shown in long dotted line among Fig. 1, solid line are common line.
When detecting, open in advance source of the gas 1, guarantee to have in the gas circuit a constant malleation input, in the time of the testing product seat leakage, press gauge tap 5, switch sends start signal to computing machine 4, computing machine 4 sends signal instruction to three-way control valve 7, the detection frock action of a special use of 7 control of three-way control valve seals EGR valve product 6 flange in the bottom faces, barotropic gas enters valve along gas circuit, at this moment, and source of the gas 1, pressure regulator valve 2, flowmeter 3, the valve of three-way control valve 7 and product 6 inside forms gas channel, and this moment, body cavity communicated with atmosphere, valve 8 two sides can form pressure reduction, and the flow under this standard pressure reduction is required measurement parameter, and this gas flow will feed back to computing machine 4 by flowmeter, can obtain a reading, this reading is exactly the water leakage that we need to measure.
The orienting sleeve leakage rate detects: circuit shown in short dash line among Fig. 1, solid line are common line.
After the detection seat leakage was finished, computing machine 4 inner predefined programmed instruction sent signal to three-way control valve 7, and three-way control valve 7 is controlled another dedicated test frock action again with the side flange face sealing of product, finishes simultaneously the gas circuit conversion.At this moment, source of the gas 1, pressure regulator valve 2, flowmeter 3, three-way control valve 7 and product 6 inner chambers form gas circuit, and the air pressure in the pressure reduction chamber 10 on product top is equal to atmospheric pressure, this moment, body cavity and pressure reduction chamber 10 can form a standard pressure reduction, gas flow by orienting sleeve 9 under this standard differential pressure action will feed back to computing machine by flowmeter, can obtain a reading, this reading is exactly the orienting sleeve leakage rate that we need to measure.
Above-mentioned testing process all is that computing machine is established in advance the program conversion instruction and controlled three-way control valve 7, simultaneously by gathering data analysis and storage in the flow instrument, and judges by showing with sound whether product is qualified.
Simultaneously, the data communication device of all detections is crossed computer storage, is convenient to follow-up of product quality, guarantees the trackability of product.
Claims (1)
1. pneumatic type EGR valve detection device is characterized in that: comprise source of the gas, pressure regulator valve, flowmeter, three-way control valve, computing machine and gauge tap; Connect pressure regulator valve behind the source of the gas, make inlet end pressure keep constant, termination flowmeter behind the pressure regulator valve, flowmeter connects computing machine and a three-way control valve, and three-way control valve is used for the control gas flow; Source of the gas, pressure regulator valve, flowmeter, three-way control valve and gas circuit of EGR valve product formation; Computing machine connects gauge tap and three-way control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310912 CN202693236U (en) | 2012-06-29 | 2012-06-29 | Pneumatic-type EGR (exhaust gas recycle) valve detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310912 CN202693236U (en) | 2012-06-29 | 2012-06-29 | Pneumatic-type EGR (exhaust gas recycle) valve detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202693236U true CN202693236U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220310912 Expired - Fee Related CN202693236U (en) | 2012-06-29 | 2012-06-29 | Pneumatic-type EGR (exhaust gas recycle) valve detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202693236U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759435A (en) * | 2012-06-29 | 2012-10-31 | 宜宾天瑞达汽车零部件有限公司 | Pneumatic EGR (Exhaust Gas Recirculation) valve detection device |
| CN103105273A (en) * | 2013-01-24 | 2013-05-15 | 创斯达（南通）机电有限公司 | Leak detector of sealed space leakage |
| CN106248412A (en) * | 2016-08-03 | 2016-12-21 | 浙江银轮机械股份有限公司 | Possess EGR thermal cycling test platform and the test method thereof of Automatic Control Strategy |
-
2012
- 2012-06-29 CN CN 201220310912 patent/CN202693236U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759435A (en) * | 2012-06-29 | 2012-10-31 | 宜宾天瑞达汽车零部件有限公司 | Pneumatic EGR (Exhaust Gas Recirculation) valve detection device |
| CN103105273A (en) * | 2013-01-24 | 2013-05-15 | 创斯达（南通）机电有限公司 | Leak detector of sealed space leakage |
| CN106248412A (en) * | 2016-08-03 | 2016-12-21 | 浙江银轮机械股份有限公司 | Possess EGR thermal cycling test platform and the test method thereof of Automatic Control Strategy |
| CN106248412B (en) * | 2016-08-03 | 2018-10-12 | 浙江银轮机械股份有限公司 | Have the EGR thermal cycling tests platform and its test method of Automatic Control Strategy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20170629 |