CN201532292U - Pneumatic circuit of multifunctional gas-tightness detector - Google Patents

Pneumatic circuit of multifunctional gas-tightness detector Download PDF

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Publication number
CN201532292U
CN201532292U CN2009202160156U CN200920216015U CN201532292U CN 201532292 U CN201532292 U CN 201532292U CN 2009202160156 U CN2009202160156 U CN 2009202160156U CN 200920216015 U CN200920216015 U CN 200920216015U CN 201532292 U CN201532292 U CN 201532292U
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CN
China
Prior art keywords
valve
gas
sensor
container
pneumatic circuit
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CN2009202160156U
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Chinese (zh)
Inventor
彭光正
余麟
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彭光正
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Priority to CN2009202160156U priority Critical patent/CN201532292U/en
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Publication of CN201532292U publication Critical patent/CN201532292U/en

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Abstract

The utility model discloses a pneumatic circuit of a multifunctional gas-tightness detector, which mainly consists of a detection gas source (1), a precise pressure regulating valve (2), a pressure gauge (3), a precursor gas source (4), a precursor valve group (5), an gas charging valve (6), an exhaust valve (7), a balanced valve (8), a differential pressure sensor (9), a sensor gas inlet protecting valve (10), a sensor exhaust valve (11), a pressure sensor (12), a quick connector (13) provided with a one-way valve, a tested container (14) and a reference container (15). The pneumatic circuit is mainly formed by a simple and reliable pneumatic control two-way zero leakage stop valve; after the tested container (14) and the reference container (15) are simultaneously inflated, and the gas charging valve (6) is cut off, complementary balance between the tested container (14) and the reference container (15) can be realized by the balanced valve (8); when the gas is in balance, the balanced valve (8) is closed to separate two cavities; the differential pressure sensor (9) is used for detecting the differential pressure or flow rate between the two cavities, so that differential pressure or flow rate type gas-tightness detection can be realized. In addition, the pneumatic circuit also can realize the functions of single-side gas charging volume identification, safe bubble type detection and the like. Furthermore, the pneumatic circuit of the multifunctional gas-tightness detector has the characteristics of real-time protection of the differential pressure sensor, high gas charging flow rate, short balancing time, compatible flow rate type detection, standard leakage hole rapid calibration and the like.

Description

Multifunctional, air airtight detector pneumatic circuit

Technical field

The utility model relates to a kind of air-leakage detector pneumatic circuit, can realize that especially differential pressure type, flow-type impermeability detect, can realize the Multifunctional, air airtight detector pneumatic circuit of functions such as big flow inflation, the detection of safe bubble type, volume identification, sensor protection.

Background technology

At present, the air-leakage detector pneumatic circuit generally is made up of zero leakage two-bit triplet solenoid valve and 2/2-way solenoid valve, and the differential pressure type impermeability detects with the detection of flow-type impermeability and adopts different detection loops respectively.Zero leakage two-bit triplet electromagnetic valve structure more complicated, requirement on machining accuracy is very high, be difficult to realize the zero leakage valve of heavy caliber, high pressure, causes impermeability to detect that inflationtime is long, detected pressures is lower; Simultaneously, because the solenoid on the solenoid valve is a heater element, the heat transferred that produces in testing process temperature to detected gas behind the valve body produces considerable influence, causes the testing result out of true.

In addition, in the gas replenishment process, because the container difference or the gas circuit of measured workpiece and benchmark container are asymmetric, the sensor both sides are easy to generate bigger dynamic overload, can cause the damage of sensor when serious.Present impermeability detects the loop and the protection of sensor is retouched executes deficiency, only amasss on software it is protected, and does not really avoid the infringement that may cause sensor from the hardware.And when carrying out bubble type detection and volume identification, only need separately measured workpiece to be inflated, and the function that bubble type detects and tested container carried out the volume identification can only can not be realized simultaneously to tested container and the inflation of benchmark container in present impermeability detection loop therefore.

Summary of the invention

According to background technology; the purpose of this utility model is to address the above problem; provide a kind of fast aeration, high pressure can realized to detect; can realize that differential pressure type and flow-type detect and elimination solenoid valve warming-up effect, possess the Multifunctional, air airtight detector pneumatic circuit of functions such as sensor protection, the detection of safe bubble type, one-sided volume identification simultaneously.

To achieve these goals, the utility model is achieved through the following technical solutions:

A kind of Multifunctional, air airtight detector pneumatic circuit, mainly by detecting source of the gas (1), accurate voltage regulating valve (2), tensimeter (3), guide's source of the gas (4), pilot valve group (5), gas filling valve (6), vent valve (7), equalizing valve (8), sensor (9), sensor air inlet protective valve (10), rows of sensors air valve (11), pressure transducer (12), band retaining valve rapid-acting coupling (13), tested container (14) and benchmark container (15) are formed, it is characterized in that: detect source of the gas (1), accurate voltage regulating valve (2) and tensimeter (3) connect according to the order of sequence, the gas filling valve (6) of connecting thereafter, a vent valve (7) in parallel, between tested container (14) and benchmark container (15), connect an equalizing valve (8), connect sensor (9) between tested container (14) and benchmark container (15), sensor (9) both sides respectively connect a sensor air inlet protective valve (10), a rows of sensors air valve (11) in parallel again; Gas filling valve (6), vent valve (7), equalizing valve (8), sensor air inlet protective valve (10) and rows of sensors air valve (11) interconnect with unit valve in the pilot valve group (5) that is connected with guide's source of the gas (4); The tested container of main gas circuit (14) side joint pressure transducer (12) and band retaining valve rapid-acting coupling (13).

Described main gas circuit is by gas filling valve (6), and the rows of sensors air valve (11) that vent valve (7), equalizing valve (8) and sensor air inlet protective valve (10) adopt gas control not have and leak the bi-bit bi-pass stop valve and adopt gas control not have the leakage Y-valve is formed;

Described sensor (9) uses differential pressure pick-up or flow sensor.

Owing to adopted technique scheme, the utlity model has following advantage and effect:

1, the utility model can realize that the impermeability of fast aeration, high pressure (more than the 2MPa) detects.

2, the utility model can be at emat sensor more only, does not change under the situation of other any structures and realizes that differential pressure type and flow-type impermeability detect.

3, the utility model can be realized safe bubble type measuring ability.

4, the utility model can realize tested container is carried out the function of accurate volume identification.

5, the utlity model has the differential pressure pick-up real-time guard, flow of aerating air is big, equilibration time is short, has eliminated the characteristics of solenoid valve heater element to the influence of impermeability accuracy of detection.

Description of drawings

Fig. 1 is the utility model pneumatic circuit structural representation

Embodiment

As shown in Figure 1, a kind of Multifunctional, air airtight detector pneumatic circuit, mainly by detecting source of the gas 1, accurate voltage regulating valve 2, tensimeter 3, guide's source of the gas 4, pilot valve group 5, gas filling valve 6, vent valve 7, equalizing valve 8, sensor 9, sensor air inlet protective valve 10, rows of sensors air valve 11, pressure transducer 12, band retaining valve rapid-acting coupling 13, tested container 14 and benchmark container 15 are formed, wherein: detect source of the gas 1, accurate voltage regulating valve 2 and tensimeter 3 connect according to the order of sequence, thereafter the gas filling valve 6 of connecting, vent valve 7 in parallel connects an equalizing valve 8 between tested container 14 and benchmark container 15, connect sensor 9 between tested container 14 and benchmark container 15, sensor 9 both sides respectively connect a sensor air inlet protective valve 10, rows of sensors air valve 11 in parallel again; Gas filling valve 6, vent valve 7, equalizing valve 8, sensor air inlet protective valve 10 and rows of sensors air valve 11 interconnect with unit valve in the pilot valve group 5 that is connected with guide's source of the gas 4; Main gas circuit is by gas filling valve 6; vent valve 7; the rows of sensors air valve 11 that equalizing valve 8 and sensor air inlet protective valve 10 adopt gas control not have and leak the bi-bit bi-pass stop valve and adopt gas control not have the leakage Y-valve is formed, the tested container 14 side joint pressure transducers 12 of main gas circuit and band retaining valve rapid-acting coupling 13.

In addition, the sensor 9 in this pneumatic circuit uses differential pressure pick-up or flow sensor, need not change any start-up system structure and can realize that differential pressure type and flow-type impermeability detect; If close equalizing valve 8 and sensor gas admittance valve 10, can realize separately tested container 14 inflations, and sensor 9 does not insert gas circuit during one-sided inflation, can realize the safe bubble type detection and the volume identification of tested container 14.

Main gas circuit adopts five bi-bit bi-pass stop valves and a Y-valve to form, bi-bit bi-pass stop valve good seal performance, and can realize big flow, qi of chong channel ascending adversely fast; Main gas circuit all adopts Pneumatic valve, the solenoid that does not have heating on the valve body, avoided fully in testing process because the error of the testing result that the heating of solenoid valve itself causes, adopted the bi-bit bi-pass stop valve of particular design simultaneously, test pressure can reach 2MPa.

Adopt the form of gas filling valve 6 and vent valve 7 parallel connections to replace detecting the mode that adopts a T-valve and a stop valve series connection in the loop in general impermeability.Gas filling valve 6 is opened, and when vent valve 7 turn-offs, realizes the inflation to tested container and benchmark container; Gas filling valve 6 turn-offs, and when vent valve 7 is opened, realizes the exhaust to tested container and benchmark container.When utilizing this loop that container is inflated,, increased substantially flow of aerating air, reduced inflationtime because gas has reduced the throttling action of valve body bore to air-flow greatly only through a stop valve in the inflation loop.

Be connected to an equalizing valve 8 between tested container 14 and the benchmark container 15, when at the same time two chambeies being inflated, equalizing valve 8 is opened, after inflation finishes, under gas filling valve 6 closing state, open equalizing valve 8 and can play UNICOM two chambeies, realize two intracavity gas pressure and the consistent purpose of the quick balance of temperature.Finish back balance valve 8 in balance and close, isolate the both sides cavity volume.Utilize equalizing valve 8 also to realize the function of one-sided inflation.When carrying out that bubble type detects and tested container 14 carried out the volume identification, need inflate separately tested container 14, after cutting out, inflates again by equalizing valve 8, can realize only tested container being filled exhaust.

Sensor 9 both sides respectively connect a sensor gas admittance valve 10, and rows of sensors air valve 11 in parallel is in aeration phase; sensor protection valve 10 turn-offs; rows of sensors air valve 11 is opened, and sensor 9 does not insert the logical atmosphere of gas circuit and two ends, guarantees that sensor 9 is in a safe condition.Inflation finishes up to two chambeies; when being in equilibrium stage; sensor protection valve 10 is opened; rows of sensors air valve 11 is closed; will sensor 9 insert in the gas circuits and detect, can avoid the damage that causes the inconsistent big pressure reduction that causes of two chamber inflation rates to cause sensor 9 because of reasons such as volume differences like this.In addition, when carrying out bubble type detection or one-sided volume identification, only need inflate separately tested container 14.Sensor gas admittance valve 10 shutoffs this moment, sensor 9 does not insert gas circuit, guarantees the safety of sensor 9.

Claims (3)

1. Multifunctional, air airtight detector pneumatic circuit, mainly by detecting source of the gas (1), accurate voltage regulating valve (2), tensimeter (3), guide's source of the gas (4), pilot valve group (5), gas filling valve (6), vent valve (7), equalizing valve (8), sensor (9), sensor air inlet protective valve (10), rows of sensors air valve (11), pressure transducer (12), band retaining valve rapid-acting coupling (13), tested container (14) and benchmark container (15) are formed, it is characterized in that: detect source of the gas (1), accurate voltage regulating valve (2) and tensimeter (3) connect according to the order of sequence, the gas filling valve (6) of connecting thereafter, a vent valve (7) in parallel, between tested container (14) and benchmark container (15), connect an equalizing valve (8), connect sensor (9) between tested container (14) and benchmark container (15), sensor (9) both sides respectively connect a sensor air inlet protective valve (10), a rows of sensors air valve (11) in parallel again; Gas filling valve (6), vent valve (7), equalizing valve (8), sensor air inlet protective valve (10) and rows of sensors air valve (11) interconnect with unit valve in the pilot valve group (5) that is connected with guide's source of the gas (4); The tested container of main gas circuit (14) side joint pressure transducer (12) and band retaining valve rapid-acting coupling (13).
2. Multifunctional, air airtight detector pneumatic circuit according to claim 1; it is characterized in that: described main gas circuit is by gas filling valve (6); the rows of sensors air valve (11) that vent valve (7), equalizing valve (8) and sensor air inlet protective valve (10) adopt gas control not have and leak the bi-bit bi-pass stop valve and adopt gas control not have the leakage Y-valve is formed.
3. Multifunctional, air airtight detector pneumatic circuit according to claim 1 is characterized in that: described sensor (9) uses differential pressure pick-up or flow sensor.
CN2009202160156U 2009-09-11 2009-09-11 Pneumatic circuit of multifunctional gas-tightness detector CN201532292U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2009202160156U CN201532292U (en) 2009-09-11 2009-09-11 Pneumatic circuit of multifunctional gas-tightness detector

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CN201532292U true CN201532292U (en) 2010-07-21

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308254A (en) * 2013-05-06 2013-09-18 浙江银轮机械股份有限公司 Dry test method and dry test device for testing leak tightness of oil cooler
CN103558000A (en) * 2013-10-16 2014-02-05 合肥远智自动化科技有限公司 Rapid-detection control method used for differential leak detector
CN103604572A (en) * 2013-11-06 2014-02-26 安徽皖仪科技股份有限公司 Leakage detection method for central air conditioner copper tube
CN104236820A (en) * 2014-09-29 2014-12-24 天津博益气动股份有限公司 Differential pressure type airtightness detecting instrument and device for detecting large-sized objects
CN104390750A (en) * 2014-11-17 2015-03-04 上海欣影电力科技股份有限公司 Air circulating leak detecting device
CN105115678A (en) * 2015-07-01 2015-12-02 天津博益气动股份有限公司 Double-mode leak detector and detection method
CN106303886A (en) * 2016-10-19 2017-01-04 深圳倍声声学技术有限公司 A kind of performing leak test system of moving-iron receiver
CN106289672A (en) * 2016-08-30 2017-01-04 迈得医疗工业设备股份有限公司 Pressure-regulating device and detection equipment
CN106768700A (en) * 2016-12-06 2017-05-31 广州市先河技术工程有限公司 A kind of capacitor air-tightness detection method
CN107014571A (en) * 2016-01-15 2017-08-04 因特瑞驰开发公司 The device of product heating is reduced in leak-testing
CN107543668A (en) * 2017-08-31 2018-01-05 西安文理学院 A kind of electric pneumatic valve air tightness detection system based on differential pressure method

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308254B (en) * 2013-05-06 2016-04-13 浙江银轮机械股份有限公司 A kind of oil cooler dry test method for testing leak tightness and device thereof
CN103308254A (en) * 2013-05-06 2013-09-18 浙江银轮机械股份有限公司 Dry test method and dry test device for testing leak tightness of oil cooler
CN103558000B (en) * 2013-10-16 2015-11-25 合肥远智自动化科技有限公司 A kind of quick detection control method for differential leak detector
CN103558000A (en) * 2013-10-16 2014-02-05 合肥远智自动化科技有限公司 Rapid-detection control method used for differential leak detector
CN103604572A (en) * 2013-11-06 2014-02-26 安徽皖仪科技股份有限公司 Leakage detection method for central air conditioner copper tube
CN104236820A (en) * 2014-09-29 2014-12-24 天津博益气动股份有限公司 Differential pressure type airtightness detecting instrument and device for detecting large-sized objects
CN104390750A (en) * 2014-11-17 2015-03-04 上海欣影电力科技股份有限公司 Air circulating leak detecting device
CN104390750B (en) * 2014-11-17 2017-05-10 上海欣影电力科技股份有限公司 Air circulating leak detecting device
CN105115678A (en) * 2015-07-01 2015-12-02 天津博益气动股份有限公司 Double-mode leak detector and detection method
CN107014571A (en) * 2016-01-15 2017-08-04 因特瑞驰开发公司 The device of product heating is reduced in leak-testing
CN106289672A (en) * 2016-08-30 2017-01-04 迈得医疗工业设备股份有限公司 Pressure-regulating device and detection equipment
CN106289672B (en) * 2016-08-30 2019-01-08 迈得医疗工业设备股份有限公司 Pressure-regulating device and detection device
CN106303886A (en) * 2016-10-19 2017-01-04 深圳倍声声学技术有限公司 A kind of performing leak test system of moving-iron receiver
CN106303886B (en) * 2016-10-19 2019-05-17 深圳倍声声学技术有限公司 A kind of performing leak test system of moving-iron receiver
CN106768700A (en) * 2016-12-06 2017-05-31 广州市先河技术工程有限公司 A kind of capacitor air-tightness detection method
CN107543668A (en) * 2017-08-31 2018-01-05 西安文理学院 A kind of electric pneumatic valve air tightness detection system based on differential pressure method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100721

Termination date: 20160911

CF01 Termination of patent right due to non-payment of annual fee