CN102507109B - One-way valve rubber tube positive pressure opening and negative pressure leakage detection device and operation method - Google Patents
One-way valve rubber tube positive pressure opening and negative pressure leakage detection device and operation method Download PDFInfo
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- CN102507109B CN102507109B CN201110341714.5A CN201110341714A CN102507109B CN 102507109 B CN102507109 B CN 102507109B CN 201110341714 A CN201110341714 A CN 201110341714A CN 102507109 B CN102507109 B CN 102507109B
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- sebific duct
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Abstract
The invention relates to a one-way valve rubber tube positive pressure opening and negative pressure leakage detection device and operation method. The detection device comprises a positive pressure opening test circuit and a negative pressure leakage test circuit; the control of the positive pressure charging of the positive pressure opening circuit is realized by a positive pressure regulating valve 1; in the negative pressure leakage circuit, negative pressure is generated by adopting a vacuum generator 2, and the control of the negative pressure charging is realized by a negative pressure regulating valve 3; and the on-off of both the circuits is controlled by an electromagnetic valve 4, and the two circuits are in parallel connection, so that the mutual interference between the two circuits is avoided, and the functions of the detection of positive pressure opening and negative pressure leakage can be performed individually. The detection device comprises a touch screen of a man-machine interface, the touch screen of the man-machine interface realizes the input of test parameters, charge pressure, time and pressure detection value are preset through the interface, and work orders are given by a control system. Detection parameters can be set by workers according to the actual specifications and requirements of a rubber tube to be detected, and thus, the flexibility in detection is enlarged. The one-way valve rubber tube positive pressure opening and negative pressure leakage detection device is simple in structure, easy to operate by workers and high in degree of intelligence and can be popularized and applied to rubber tube enterprises.
Description
Technical field
The present invention relates to sebific duct detection field, particularly a kind of one-way valve rubber tube positive pressure unlatching and negative pressure leakage detection device and method of operating.
Background technology
One-way valve rubber tube is applied to vacuum boost system, and wherein retaining valve plays the effect that keeps booster internal vacuum.The quality of retaining valve receives increasing concern, and its installation direction on sebific duct is also particularly important.If retaining valve can not be in the enough vacuum tightness of the inner generation of booster, when engine reaches High Rotation Speed, power-assisted effect is bad so, even cannot power-assisted.The common method of at present one-way valve rubber tube being carried out to malleation unlatching and negative pressure Leak Detection is: get the sebific duct that retaining valve is housed, workman blows the malleation opening end of sebific duct with mouth, finger is placed on to the other end of sebific duct, if feel air-flow, judges the unlatching of retaining valve malleation; Then workman inhales the malleation opening end of sebific duct with mouth, if there is vacuum sense, judges that one-way valve rubber tube negative pressure is without leakage.
This detection method wastes time and energy, because artificial difference exists input air pressure unstable, and the problem of testing process poor operability, and workman whether cannot implementing monitoring to the correct judgment of test result, and the accuracy of test result is difficult to guarantee.
Summary of the invention
For the deficiencies in the prior art, develop a kind of one-way valve rubber tube positive pressure time saving and energy saving, that result is simple, intelligent degree is higher and open and negative pressure leakage detection device.The sebific duct that retaining valve is housed is arranged on pick-up unit, and the state after simulated automotive is installed detects, and to improving detection efficiency, especially improves detection accuracy, guarantees that product quality is of great advantage.
One-way valve rubber tube positive pressure of the present invention is opened and negative pressure leakage detection device is achieved through the following technical solutions:
One-way valve rubber tube positive pressure is opened and a negative pressure leakage detection device, as shown in Figure 2, comprises that malleation is opened and negative pressure is leaked two test loops; Malleation is opened loop and by malleation pressure regulator valve 1, is realized the control of malleation charged pressure; Negative pressure is leaked loop and is adopted vacuum generator 2 to produce negative pressure, then by negative pressure pressure regulator valve 3, is realized the control of negative pressure charged pressure; Article two, parallel connection, by solenoid valve 4 control loop switches, is realized in loop, to prevent two phase mutual interference between loop, can carry out separately malleation and open and negative pressure leakage detection function.
One-way valve rubber tube positive pressure of the present invention is opened and negative pressure leakage detection device method of operating, pressure transducer 5 is connected with one end of tested sebific duct, to controller PLC, transmit the force value in tested sebific duct, when controller PLC thinks that tested sebific duct forward is without unlatching or negative pressure leakage, issue instructions to alarm, by alarm, complete alarm.
Concrete operations flow process is as follows:
First input malleation and open and negative pressure leakage process detected parameters, by tested sebific duct forward cut-in pressure sensor, the other end blocks; Open operation button, retaining valve forward open detection starts; By air supply system, to forward, open loop and be filled with malleation, within the pressurising time, pressure changes to pressurising ultimate value, and alarm alarm pressurising is abnormal; Within the pressurising time, sebific duct pressure drop, to opening setting value, proves the unlatching of sebific duct forward, detects and opens required time; Exceed the pressurising time, sebific duct pressure does not drop to unlatching setting value, and sebific duct forward is not opened, and alarm alarm detects not to be passed through; As forward open detection, alarm is not abnormal, and negative pressure Leak Detection starts voluntarily; By air supply system, to negative pressure, leak loop forward and be filled with negative pressure, within the pressurising time, pressure changes to pressurising ultimate value, and warning system alarm pressurising is abnormal; Within the dwell time, sebific duct pressure drop, to pressure limit value, proves the leakage of sebific duct negative pressure, and warning system alarm detects not to be passed through; Dwell time arrives, the force value after pressure transducer record declines, and controller PLC is setting value relatively, meets testing setup scope, and it is qualified to detect, by detecting; As need lower whorl to detect, and only need to change tested sebific duct, reopen action button.
The present invention includes man-machine interface touch-screen and realize the input of test parameter, by this interface, preset charged pressure, the time, detected pressure value, then assign work order by control system.Staff can set detected parameters by actual specification and the requirement of detected sebific duct, has expanded the dirigibility detecting.
The present invention compared with prior art, has the following advantages: 1. and simple in structure, be easy to workman's operation.2. pick-up unit comprises control system (controller PLC), and warning system can accurately be judged testing result by warning system.3. applicable to different size, difform one-way valve rubber tube, is widely used.4. a touching switch can complete malleation unlatching and two detections of negative pressure leakage simultaneously, and intelligent degree is high, can use at sebific duct business enterprise expand.
Accompanying drawing explanation
Fig. 1: block diagram;
Fig. 2: structural representation;
Fig. 3: detect operation process chart.
Embodiment
The present embodiment is that one-way valve rubber tube positive pressure is opened and the operation of negative pressure Leak Detection.Detect work flow as shown in Figure 3: before detecting and starting, by man-machine interface touch screen input malleation opening process detected parameters: malleation charged pressure, pressurising ultimate value (controlling source of the gas stability), open setting value, opening time; Input again negative pressure leakage process detected parameters: negative pressure charged pressure, pressurising ultimate value (controlling source of the gas stability), pressure limit value, dwell time.
First input malleation and open and negative pressure leakage process detected parameters, by tested sebific duct forward cut-in pressure sensor, the other end blocks.Open operation button, retaining valve forward open detection starts.By air supply system, to forward, open loop and be filled with malleation, within the pressurising time, pressure changes to pressurising ultimate value, and alarm alarm pressurising is abnormal; Within the pressurising time, sebific duct pressure drop, to opening setting value, proves the unlatching of sebific duct forward, detects and opens required time; Exceed the pressurising time, sebific duct pressure does not drop to unlatching setting value, and sebific duct forward is not opened, and alarm alarm detects not to be passed through.As forward open detection, alarm is not abnormal, and negative pressure Leak Detection starts voluntarily.By air supply system, to negative pressure, leak loop forward and be filled with negative pressure, within the pressurising time, pressure changes to pressurising ultimate value, and warning system alarm pressurising is abnormal; Within the dwell time, sebific duct pressure drop, to pressure limit value, proves the leakage of sebific duct negative pressure, and warning system alarm detects not to be passed through; Dwell time arrives, the force value after pressure transducer record declines, and controller PLC is setting value relatively, meets testing setup scope, and it is qualified to detect, by detecting.As need lower whorl to detect, and only need to change tested sebific duct, reopen action button.
Sebific duct internal diameter is the one-way valve rubber tube positive pressure open detection of Φ 9, requires retaining valve to reduce after 4KPa at pressure, in 1s, opens.By input screen input, be filled with 4KPa pressurized air, pressurising ultimate value is 3.6～4.4KPa, and unlatching setting value is 0.5KPa, and the opening time is 1s;
Sebific duct internal diameter is the one-way valve rubber tube negative pressure Leak Detection of Φ 9, requires retaining valve under the pressure of-80KPa, pressurize 15s, and pressure reduces and is less than 0.5KPa.By be filled with-80KPa of input screen input pressurized air, pressurising ultimate value is-80.02～-79.98KPa, and pressure limit value is-79.5KPa that the dwell time is 15s.
The invention provides the intelligent device of a kind of one-way valve rubber tube positive pressure unlatching and negative pressure Leak Detection, this apparatus structure is simple, visual input system is convenient to workman's operation, improved work efficiency, make one-way valve rubber tube positive pressure open and negative pressure Leak Detection process fast, efficiently, complete accurately.
Claims (1)
1. one-way valve rubber tube positive pressure is opened and a negative pressure leakage detection method, comprises that malleation is opened and negative pressure is leaked two test loops; Malleation is opened loop and by malleation pressure regulator valve (1), is realized the control of malleation charged pressure; Negative pressure is leaked loop and is adopted vacuum generator (2) to produce negative pressure, then by negative pressure pressure regulator valve (3), is realized the control of negative pressure charged pressure; Article two, parallel connection, by solenoid valve (4) control loop switch, is realized in loop, to prevent two phase mutual interference between loop, can carry out separately malleation and open and negative pressure leakage detection function; First input malleation and open and negative pressure leakage process detected parameters, by tested sebific duct forward cut-in pressure sensor, the other end blocks; Open operation button, retaining valve forward open detection starts; By air supply system, to forward, open loop and be filled with malleation, within the pressurising time, pressure changes to pressurising ultimate value, and alarm alarm pressurising is abnormal; Within the pressurising time, sebific duct pressure drop, to opening setting value, proves the unlatching of sebific duct forward, detects and opens required time; Exceed the pressurising time, sebific duct pressure does not drop to unlatching setting value, and sebific duct forward is not opened, and alarm alarm detects not to be passed through; As forward open detection, alarm is not abnormal, and negative pressure Leak Detection starts voluntarily; By air supply system, to negative pressure, leak loop forward and be filled with negative pressure, within the pressurising time, pressure changes to pressurising ultimate value, and warning system alarm pressurising is abnormal; Within the dwell time, sebific duct pressure drop, to pressure limit value, proves the leakage of sebific duct negative pressure, and warning system alarm detects not to be passed through; Dwell time arrives, the force value after pressure transducer record declines, and controller PLC is setting value relatively, meets testing setup scope, and it is qualified to detect, by detecting; As need lower whorl to detect, and only need to change tested sebific duct, reopen action button.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110341714.5A CN102507109B (en) | 2011-11-02 | 2011-11-02 | One-way valve rubber tube positive pressure opening and negative pressure leakage detection device and operation method |
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| CN201110341714.5A CN102507109B (en) | 2011-11-02 | 2011-11-02 | One-way valve rubber tube positive pressure opening and negative pressure leakage detection device and operation method |
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| CN102507109A CN102507109A (en) | 2012-06-20 |
| CN102507109B true CN102507109B (en) | 2014-03-19 |
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| CN104422568A (en) * | 2013-09-03 | 2015-03-18 | 北京谊安医疗系统股份有限公司 | Expiratory valve leakage detection method and detection device for respiration circuit |
| CN104019973B (en) * | 2014-06-12 | 2017-01-11 | 珠海格力电器股份有限公司 | Detection device and method of valve block spring of refrigerant filter |
| CN104048798A (en) * | 2014-06-20 | 2014-09-17 | 四川长虹电器股份有限公司 | One-way valve leakage detection method and air conditioner |
| CN104075859A (en) * | 2014-06-26 | 2014-10-01 | 深圳市瑞必达科技有限公司 | Switching mode power supply waterproof tester and testing method of switching mode power supply waterproof tester |
| CN105509978A (en) * | 2015-12-29 | 2016-04-20 | 东方宏海新能源科技发展有限公司 | Testing device and testing method for embedded-mounted check valve |
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| CN110630589B (en) * | 2019-10-15 | 2021-05-14 | 宁波海宏液压有限公司 | Automatic test system and method for hydraulic check valve |
| CN111380659B (en) * | 2020-03-20 | 2022-06-07 | 中国北方车辆研究所 | Airtightness testing device and method for power battery water cooling system |
| CN111387831B (en) * | 2020-04-29 | 2021-09-14 | 珠海格力电器股份有限公司 | Cooking utensil and self-checking method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5580031A (en) * | 1978-12-12 | 1980-06-16 | Nippon Kokan Kk <Nkk> | Fluid leakage detection system |
| DE4307283C2 (en) * | 1993-03-08 | 1996-04-18 | Messmann Josef Fa | Device for testing porous pipes or the like for leaks and method therefor |
| DE4415430C2 (en) * | 1994-05-02 | 1998-01-29 | Wuerschinger Gmbh & Co Baubetr | Device for leak testing of tubular test parts in a standing arrangement |
| CN201034798Y (en) * | 2007-03-30 | 2008-03-12 | 齐齐哈尔轨道交通装备有限责任公司 | Braking pipe air tightness test-bed |
| CN201173840Y (en) * | 2007-09-17 | 2008-12-31 | 谷守刚 | Portable split AC and DC dual-purpose respiring valve positive and negative pressure tester |
| JP2010271094A (en) * | 2009-05-20 | 2010-12-02 | Hitachi High-Technologies Corp | Gas leakage inspection device |
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