CN103048100A - Full-automatic detection equipment for valve tightness of automobile engine cylinder head - Google Patents

Full-automatic detection equipment for valve tightness of automobile engine cylinder head Download PDF

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Publication number
CN103048100A
CN103048100A CN 201210518157 CN201210518157A CN103048100A CN 103048100 A CN103048100 A CN 103048100A CN 201210518157 CN201210518157 CN 201210518157 CN 201210518157 A CN201210518157 A CN 201210518157A CN 103048100 A CN103048100 A CN 103048100A
Authority
CN
China
Prior art keywords
valve
cylinder head
self
priming
automatic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201210518157
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Chinese (zh)
Inventor
吴建军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN ZHONGHENG CONTROL ENGINEERING Co Ltd
Original Assignee
TIANJIN ZHONGHENG CONTROL ENGINEERING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TIANJIN ZHONGHENG CONTROL ENGINEERING Co Ltd filed Critical TIANJIN ZHONGHENG CONTROL ENGINEERING Co Ltd
Priority to CN 201210518157 priority Critical patent/CN103048100A/en
Publication of CN103048100A publication Critical patent/CN103048100A/en
Pending legal-status Critical Current

Links

Abstract

The invention relates to full-automatic detection equipment for valve tightness of an automobile engine cylinder head. A valve stem gland is arranged on the cylinder head; a gas leakage gap is formed between a valve steam and the cylinder head; and an intake/exhaust cavity is also arranged in the cylinder head. The full-automatic detection equipment for the valve tightness of the automobile engine cylinder head is characterized in that a self-priming gas-guide connecting pipe is communicated with the intake/exhaust cavity through a self-priming silica gel plate; a gas connecting pipe is provided with a blow-off valve, a detection valve, a standard volume gas tank, a vent valve, a pressure stabilizing gas holder, a regulating valve and a vacuum pump in sequence; a controller is used for controlling the blow-off valve, the detection valve, the standard volume gas tank, the vent valve, the regulating valve, the vacuum pump, a touch screen and an indicator light alarm; and a pressure sensor is arranged on the controller. The full-automatic detection equipment for the valve tightness of the automobile engine cylinder head has the advantages that as operation sequences are simplified, automatic functions, such as an automatic detection function, an automatic inflation function, a detection result automatic distinction function and the like, can be realize, and sub-quality products can be examined and regulated in time. The full-automatic detection equipment for the valve tightness of the automobile engine cylinder head has the characteristics that the detection speed is high; the repeatability is good; and the detection cost is low.

Description

Full automatic car engine cylinder cap air valve tightness checkout equipment
 
Technical field
The invention belongs to automobile technical field, relate in particular to a kind of automobile engine cylinder head valve checkout equipment.
Background technology
Cylinder cover of automobile engine needs the sealing of valve-seat bore on it is detected after machining, existing checkout equipment adopts by pass into pressurized air in engine cylinder cover, and at head valve bar or port place the detection that clamp device is realized the cylinder head air valve tightness is set, it is loaded down with trivial details to use this equipment Inspection operation, require also higher to the air pressure that passes into, and when detecting cylinder head online, because the model of cylinder head is different, need to change at any time and detect frock, so both increased labor strength, reduce production efficiency, also increased testing cost simultaneously.Existing checkout equipment is not installed the specialized newspaper alarm device mostly, can not instant alarming to the cylinder cap product that do not meet national standard, unacceptable product just can not in time be found in process and then be adjusted, can only after machining, product could detect it, so both increase the scrappage of product, also reduced detection speed and accuracy of detection.
Summary of the invention
The present invention enhances productivity, reduces labour intensity for the technical matters that exists in the solution known technology provides a kind of, reduces the full automatic car engine cylinder cap air valve tightness checkout equipment of enterprise cost.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology is:
Full automatic car engine cylinder cap air valve tightness checkout equipment, comprise cylinder head, valve stem and valve stem seal sleeve, described valve stem seal is set on the cylinder head, described valve stem one end is positioned at cylinder head, the other end runs through cylinder head and extends in the valve stem seal sleeve, form the Leakage Gas gap between valve stem and the cylinder head, also be provided with the intake and exhaust cavity in the described cylinder head, it is characterized in that, also comprise self-priming air guide connecting pipe, the self-priming silica gel plate, gas connection pipe, touch-screen, the pilot lamp alarm, controller and pressure transducer, described self-priming air guide connecting pipe is communicated with the intake and exhaust cavity by the self-priming silica gel plate, described valve stem seal sleeve and cylinder head junction also are provided with the self-priming silica gel plate, be provided with successively exhaust-valve on the described gas connection pipe, detect valve, the orthobaric volume gas tank, breather valve, the voltage stabilizing gas tank, variable valve and vacuum pump, described controller is respectively by wire and exhaust-valve, detect valve, the orthobaric volume gas tank, breather valve, variable valve, vacuum pump, touch-screen is connected with the pilot lamp alarm, and described pressure transducer is arranged on the controller.
Beneficial effect of the present invention is: checkout equipment provided by the invention adopts vacuum pumping method that engine cylinder cover is detected, need in engine cylinder cover, to be filled with the method that pressurized air detects compared to existing equipment, do not need to be filled with pressure-air, simplified operational sequence, the detection of single valve port was controlled in 12 seconds, has improved detection speed; Adopt controller as master element, with touch-screen as man-machine interaction mode, input vacuum tightness in the controller, allow leakage rate, examination criteria and detection time by touch-screen in the testing process, thereby realize the automatic functions such as automatic detection, automatic inflating, testing result automatic discrimination, testing result screen display and with light warning, form complete Chinese Real time dynamic display, can in time investigate and adjust substandard product, finish the online measuring ability of cylinder head, and do not need to change when detecting the cylinder head of different model and detect frock; Pressure transducer can detect the air leakage rate of valve in the unit interval, and measuring accuracy is in ± 1% scope; This checkout equipment good seal performance reduces to greatest extent and detects error, but has the advantages such as detection speed is fast, good reproducibility Effective Raise production efficiency, reduction testing cost.
Description of drawings
Fig. 1 is structure principle chart of the present invention.
Among the figure: 1-cylinder head, 2-valve stem, 3-valve stem seal sleeve, 4-Leakage Gas gap, 5-self-priming air guide connecting pipe, 6-self-priming silica gel plate, 7-gas connection pipe, 8-exhaust-valve, 9-detect valve, 10-orthobaric volume gas tank, 11-breather valve, 12-voltage stabilizing gas tank, 13-variable valve, 14-vacuum pump, 15-touch-screen, 16-pilot lamp alarm, 17-controller, 18-pressure transducer, 19-wire, 20-intake and exhaust cavity.
Embodiment
For further understanding content of the present invention, Characteristic, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
As shown in Figure 1, valve stem seal sleeve 3 is arranged on the cylinder head 1, valve stem 2 one ends are positioned at cylinder head 1, the other end runs through cylinder head 1 and extends out in the valve stem seal sleeve 3, form Leakage Gas gap 4 between valve stem 2 and the cylinder head 1, also be provided with intake and exhaust cavity 20 in the cylinder head 1, self-priming air guide connecting pipe 5 is connected with intake and exhaust cavity 20 by self-priming silica gel plate 6, valve stem seal sleeve 3 also is provided with self-priming silica gel plate 6 with cylinder head 1 junction, be provided with successively exhaust-valve 8 on the gas connection pipe 7, detect valve 9, orthobaric volume gas tank 10, breather valve 11, voltage stabilizing gas tank 12, variable valve 13 and vacuum pump 14, controller 17 is respectively by wire 19 and exhaust-valve 8, detect valve 9, orthobaric volume gas tank 10, breather valve 11, variable valve 13, vacuum pump 14, touch-screen 15 is connected connection with the pilot lamp alarm, pressure transducer 18 is arranged on the controller 17.
Principle of work of the present invention is: open device power supply (DPS), behind the equipment self-inspection at touch-screen 15 initial page appears, the striking startup interface, controller 17 cuts out exhaust-valve 8 after receiving and detecting application, start vacuum pump 14 and open variable valve 13, breather valve 11 and detection valve 9, vacuum pump 14 pumps the air in the intake and exhaust cavity 20, because Leakage Gas gap 4 is very little, valve stem seal sleeve 3, self-priming silica gel plate 6 and cylinder head 1 three can connect and be relative sealing state closely under the effect of atmospheric pressure; When pressure transducer detects vacuum tightness in the cylinder head 1 less than-90kpa, after 5 seconds voltage stabilizing time, vacuum pump 14 is closed in controller 17 controls, variable valve 13, breather valve 11, keep detecting valve 9 and be in open mode, exhaust-valve 8 is in closed condition, in 5 second time, utilize the change value of pressure of pressure transducer 18 measurement standard volume gas tanks 10, and calculate leakage volume according to the computing formula of pressure and volume, adjust again the leakage rate in the unit interval, measured value and setting contrast, when measured value during less than setting, the engine cylinder cap air valve tightness is qualified, and pilot lamp alarm 15 gives a green light, on the contrary defective sending out a warning.Detection is finished, and opens exhaust-valve 8 and makes the pressure in the intake and exhaust cavity 20 equal atmospheric pressure, closes and detects valve 9, and the vacuum tightness in the control criterion volume gas tank 10 makes air pressure inside constant in less than within-the 90kpa, prepares for next valve detects.The vacuum tightness that arranges in the testing process, qualified permission leakage rate, examination criteria and the input of detection time are all finished by touch-screen 15, testing process realizes the automatic functions such as automatic detection, automatic inflating, testing result automatic discrimination, and forms complete Chinese Real time dynamic display.
More than the specific embodiment of the present invention is elaborated, but described content only is preferred embodiments of the present invention, can not be considered to be used to limiting practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., all should still belong within the patent covering scope of the present invention.

Claims (1)

1. full automatic car engine cylinder cap air valve tightness checkout equipment, comprise cylinder head (1), valve stem (2) and valve stem seal sleeve (3), described valve stem seal sleeve (3) is arranged on the cylinder head (1), described valve stem (2) one ends are positioned at cylinder head (1), the other end runs through cylinder head (1) and extends out in the valve stem seal sleeve (3), form Leakage Gas gap (4) between valve stem (2) and the cylinder head (1), also be provided with intake and exhaust cavity (20) in the described cylinder head (1), it is characterized in that: also comprise self-priming air guide connecting pipe (5), self-priming silica gel plate (6), gas connection pipe (7), touch-screen (15), pilot lamp alarm (16), controller (17) and pressure transducer (18), described self-priming air guide connecting pipe (5) is communicated with intake and exhaust cavity (20) by self-priming silica gel plate (6), described valve stem seal sleeve (3) also is provided with self-priming silica gel plate (6) with cylinder head (1) junction, be provided with successively exhaust-valve (8) on the described gas connection pipe (7), detect valve (9), orthobaric volume gas tank (10), breather valve (11), voltage stabilizing gas tank (12), variable valve (13) and vacuum pump (14), described controller (17) is respectively by wire (19) and exhaust-valve (8), detect valve (9), orthobaric volume gas tank (10), breather valve (11), variable valve (13), vacuum pump (14), touch-screen (15) is connected 16 with the pilot lamp alarm) connect, described pressure transducer (18) is arranged on the controller (17).
CN 201210518157 2012-12-06 2012-12-06 Full-automatic detection equipment for valve tightness of automobile engine cylinder head Pending CN103048100A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201210518157 CN103048100A (en) 2012-12-06 2012-12-06 Full-automatic detection equipment for valve tightness of automobile engine cylinder head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201210518157 CN103048100A (en) 2012-12-06 2012-12-06 Full-automatic detection equipment for valve tightness of automobile engine cylinder head

Publications (1)

Publication Number Publication Date
CN103048100A true CN103048100A (en) 2013-04-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201210518157 Pending CN103048100A (en) 2012-12-06 2012-12-06 Full-automatic detection equipment for valve tightness of automobile engine cylinder head

Country Status (1)

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CN (1) CN103048100A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822762A (en) * 2014-02-21 2014-05-28 中国第一汽车股份有限公司 Heavy-duty diesel engine cylinder body water jacket leakage detection process
CN107340101A (en) * 2017-07-03 2017-11-10 中国航空工业集团公司北京长城计量测试技术研究所 A kind of sealing device gas tiny leakage evaluating apparatus and method
CN108362450A (en) * 2017-12-28 2018-08-03 中国航发四川燃气涡轮研究院 A kind of micro-test device for the experiment of aero-engine static sealing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822762A (en) * 2014-02-21 2014-05-28 中国第一汽车股份有限公司 Heavy-duty diesel engine cylinder body water jacket leakage detection process
CN107340101A (en) * 2017-07-03 2017-11-10 中国航空工业集团公司北京长城计量测试技术研究所 A kind of sealing device gas tiny leakage evaluating apparatus and method
CN107340101B (en) * 2017-07-03 2020-09-11 中国航空工业集团公司北京长城计量测试技术研究所 Gas micro-leakage detection device and method for sealing device
CN108362450A (en) * 2017-12-28 2018-08-03 中国航发四川燃气涡轮研究院 A kind of micro-test device for the experiment of aero-engine static sealing

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PB01 Publication
C06 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130417

C02 Deemed withdrawal of patent application after publication (patent law 2001)