CN202814667U - Photoelectric instrument gas-tightness detector - Google Patents

Photoelectric instrument gas-tightness detector Download PDF

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Publication number
CN202814667U
CN202814667U CN 201220459770 CN201220459770U CN202814667U CN 202814667 U CN202814667 U CN 202814667U CN 201220459770 CN201220459770 CN 201220459770 CN 201220459770 U CN201220459770 U CN 201220459770U CN 202814667 U CN202814667 U CN 202814667U
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CN
China
Prior art keywords
gas
pressure
single chip
controlling circuit
machine controlling
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Withdrawn - After Issue
Application number
CN 201220459770
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Chinese (zh)
Inventor
张勇
马东玺
张岭
王伟明
孙江生
张连武
侯章亚
冯广斌
闫鹏程
马振书
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Ordnance Technology Research Institute of General Armament Department of Chinese PLA
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Ordnance Technology Research Institute of General Armament Department of Chinese PLA
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Priority to CN 201220459770 priority Critical patent/CN202814667U/en
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Publication of CN202814667U publication Critical patent/CN202814667U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model relates to a photoelectric instrument gas-tightness detector, structurally comprising: a nitrogen on-line quality analysis module consisting of a dew point instrument, a nitrogen purity analyzer and a digital pressure meter which are connected; a first gas inflation passage consisting of a first precision pressure-reducing valve, a first electromagnetic valve, and a first digital pressure switch which are connected; a second gas inflation passage consisting of a second precision pressure-reducing valve, a second electromagnetic valve, and a second digital pressure switch which are connected; and a single-chip microcomputer control circuit which is connected with the each portion and is used for performing real-time monitoring for indexes such as gas quality of an input gas source, inflation time and an inflation pressure to a photoelectric instrument, etc. The photoelectric instrument gas-tightness detector of the utility model is suitable for gas-tightness detection of various precision photoelectric instrument inner cavities, and can be widely applied in gas-tightness detection operations performed to the latest developed or completely repaired photoelectric instruments by photoelectric instrument development units and repair factories.

Description

The photoelectric instrument air-leakage detector
Technical field
The utility model relates to a kind of air-tightness detection device, specifically a kind of photoelectric instrument air-leakage detector.
Background technology
For guaranteeing the normal use of accurate photoelectric instrument, photoelectric instrument dispatches from the factory front or repaiies and complete the rear nitrogen that all will be filled with high-purity, low dew point, to prevent that mildewing from appearring in photoelectric instrument inside, the fog phenomenon.The pure nitrogen that is filled with the photoelectric instrument inner chamber carries out slowly gas exchange by each parts connection space of photoelectric instrument and ambient atmosphere, relevant criterion all has strict demand to photoelectric instrument leak source, leakage rate etc., when Leakage Gas speed during greater than setting, think that then there is gas leak phenomenon in this photoelectric instrument, exist the photoelectric instrument of serious gas leak phenomenon because corrosive gas and the steam in the introducing atmosphere, will cause that photoelectric instrument inner occurs serious mildewing, the fog phenomenon, thereby affect the normal use of photoelectric instrument.
So, to carry out airtight test to photoelectric instrument in advance.Existing inspection method is that tested photoelectric instrument bleeder port is linked to each other with an end of a U-shaped mercury slug, then utilize the photoelectric instrument inflatable interface to wherein being filled with dry pure nitrogen, U-shaped mercury slug other end mercury liquid level begins to rise, when rising to a certain position, cut off source of inflation gas, whether observe the mercury liquid level occurs descending at the appointed time---and the mercury liquid level descends, and then expression has gas leak phenomenon; Otherwise, represent that then the impermeability of this photoelectric instrument is good.This air-tightness detection method needs to rely on eye-observation on the one hand, and human factor is larger on the testing result impact; On the other hand, also inapplicable synchronous impermeability to large quantity photoelectric instrument detects.
The utility model content
The purpose of this utility model just provides a kind of photoelectric instrument air-leakage detector, detects the larger problem of testing result error that relies on manual observation to exist to solve impermeability.
The utility model is achieved in that a kind of photoelectric instrument air-leakage detector, includes:
Dew point hygrometer, join with nitrogen gas purity analyser, gas bleed valve and single chip machine controlling circuit respectively, for detection of the dewpoint temperature of input nitrogen, and the source of the gas that dewpoint temperature is not up to standard discharges by gas bleed valve, and dewpoint temperature source of the gas up to standard is outputed to the nitrogen gas purity analyser;
The nitrogen gas purity analyser, join with described dew point hygrometer, gas bleed valve, digital pressure gauge and single chip machine controlling circuit respectively, for detection of the purity of input nitrogen, and the source of the gas that purity is not up to standard discharges by gas bleed valve, and purity source of the gas up to standard is outputed to digital pressure gauge;
Digital pressure gauge, join with described nitrogen gas purity analyser, gas bleed valve, the first precise pressure-reducing valve, the second precise pressure-reducing valve and single chip machine controlling circuit respectively, pressure for detection of input nitrogen, and the source of the gas that pressure is not up to standard discharges by gas bleed valve, and pressure source of the gas up to standard is outputed to respectively the first precise pressure-reducing valve and the second precise pressure-reducing valve;
Gas bleed valve joins with described dew point hygrometer, described nitrogen gas purity analyser, described digital pressure gauge and single chip machine controlling circuit, is used for getting rid of source of the gas not up to standard;
The first precise pressure-reducing valve joins with described digital pressure gauge and the first solenoid valve respectively, and the pressure that is used for inputting source of the gas reduces pressure and exports after the first setting value;
The first solenoid valve joins with described the first precise pressure-reducing valve, the first digital pressure switch and single chip machine controlling circuit respectively, is used under the control of single chip machine controlling circuit the first gas fill port being carried out switch control;
The first digital pressure switch is joined with described the first solenoid valve and single chip machine controlling circuit respectively, is used under the control of single chip machine controlling circuit the first gas fill port being carried out switch control;
The second precise pressure-reducing valve joins with described digital pressure gauge and the second solenoid valve respectively, and the pressure that is used for inputting source of the gas reduces pressure and exports after the second setting value;
The second solenoid valve joins with described the second precise pressure-reducing valve, the second digital pressure switch and single chip machine controlling circuit respectively, is used under the control of single chip machine controlling circuit the second gas fill port being carried out switch control;
The second digital pressure switch is joined with described the second solenoid valve and single chip machine controlling circuit respectively, is used under the control of single chip machine controlling circuit the second gas fill port being carried out switch control;
Single chip machine controlling circuit, join with described dew point hygrometer, described nitrogen gas purity analyser, described digital pressure gauge, described blowdown valve, described the first solenoid valve, the described first digital pressure switch, described the second solenoid valve, the described second digital pressure switch, display and hummer respectively, be used for to the input source of the gas gaseous mass, carry out Real-Time Monitoring to inflationtime and the charge pressure of tested instrument inflation, and send display to show the impermeability testing result;
Display joins with described single chip machine controlling circuit, is used for showing the impermeability testing result; And
Hummer joins with described single chip machine controlling circuit, for giving alarm in the situation that gas leakage is arranged in detection.
The utility model photoelectric instrument air-leakage detector also includes:
The first pressure transducer is arranged on the gas channels of the described first digital pressure switch back, joins with described single chip machine controlling circuit, is used for the charge pressure value that Real-Time Monitoring is filled with tested photoelectric instrument; And
The second pressure transducer is arranged on the gas channels of the described second digital pressure switch back, joins with described single chip machine controlling circuit, is used for the charge pressure value that Real-Time Monitoring is filled with tested photoelectric instrument.
The nitrogen online quality analysis module of the utility model by being comprised of dew point hygrometer, nitrogen gas purity analyser and digital pressure gauge detects the technical requirement whether the nitrogen quality that is input in the tested photoelectric instrument satisfies regulation; Utilize control software in the sheet of single chip machine controlling circuit, the gaseous mass, inflationtime, the charge pressure that are filled with are carried out Real-Time Monitoring, when gaseous mass, inflationtime, when charge pressure does not reach setting value, utilize display and buzzer warning; Precise pressure-reducing valve is provided with two, respectively the nitrogen pressure of input is stablized and be depressurized to two kinds of different infrabar, precise pressure-reducing valve adopts the aperture of the opening and closing element in the application valve body to come adjusting gas flow, while is by the effect of downstream pressure, regulate the aperture of opening and closing element, thereby downstream pressure is kept within the specific limits, in the situation that inlet gas pressure changes, also can keep exit gas pressure in the scope of setting.
The utility model provides a kind of automatic measuring device that detects code requirement that meets for the impermeability detection of photoelectric instrument, can eliminate the interference of human factor, guarantee accuracy and reliability that impermeability detects, the impermeability that has solved thus the photoelectric instrument that the impermeability requirement is arranged detects a difficult problem, prevented that effectively photoelectric instrument from mildewing, the generation of fog phenomenon, and technical indicator that can corresponding raising photoelectric instrument.
The online quality analysis module of nitrogen of utilizing the utility model has realized the quality monitoring of input nitrogen, utilizes digital pressure switch and solenoid valve on two gas fill port of single chip machine controlling circuit control, has realized that thus the impermeability of photoelectric instrument detects.The utlity model has small intelligent, the characteristics such as highly integrated, easy to use, the impermeability that can carry out two kinds of photoelectric instruments under the different infrabar pressure conditions detects, and gives alarm in the situation that the photoelectric instrument impermeability lost efficacy.The utility model has solved impermeability and has detected the larger problem of testing result error that relies on manual observation to exist, can the synchronous impermeability of large quantity photoelectric instrument be detected, the impermeability that is applicable to various accurate photoelectric instrument inner chambers detects, can be widely used in the impermeability testing that photoelectric instrument research institute and maintenance depot carry out the photoelectric instrument that newly grinds or repair after completing, to guaranteeing the photoelectric instrument the key technical indexes, prevent from mildewing, the generation of fog phenomenon is significant.
Description of drawings
Fig. 1 is circuit structure block diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model is to compose in series mutually the online quality analysis module of nitrogen by dew point hygrometer, nitrogen gas purity analyser and digital pressure gauge, detects the technical requirement whether the nitrogen quality that is input in the tested photoelectric instrument satisfies regulation; Dew point hygrometer, nitrogen gas purity analyser and digital pressure gauge join with gas bleed valve respectively, when detecting not source of the gas up to standard, and under the control of single chip machine controlling circuit, the corresponding source of the gas of in time releasing.
What join with the online quality analysis module of nitrogen output terminal is the two-way gas fill port, and each road is respectively arranged with precise pressure-reducing valve, is decompressed to two kinds of different infrabar with the input source of the gas with 200kPa; In each gas fill port, also be connected to the combination switch valve that is formed by solenoid valve and digital pressure switch, under the control of single chip machine controlling circuit, realize automatic unlatching and the shutoff of each gas fill port.
The first gas fill port is to be composed in series by the first precise pressure-reducing valve, the first solenoid valve and the first digital pressure switch, and its output terminal is that infrabar detects mouth one.The second gas fill port is to be composed in series by the second precise pressure-reducing valve, the second solenoid valve and the second digital pressure switch, and its output terminal is that infrabar detects mouth two.
Single chip machine controlling circuit joins with dew point hygrometer, nitrogen gas purity analyser, digital pressure gauge, blowdown valve, the first solenoid valve, the first digital pressure switch, the second solenoid valve, the second digital pressure switch respectively, carrying out Real-Time Monitoring to the gaseous mass of input source of the gas with to indexs such as the inflationtime of photoelectric instrument inflation and charge pressures, and can set according to the user initial parameter is made amendment; Control software also can receive the user to setting and the modification of inflationtime initial setting parameter in the sheet of single chip machine controlling circuit.On the output terminal of single chip machine controlling circuit, also be connected to display and hummer, in order to showing the impermeability testing result, and have in detection in the situation of gas leakage and give alarm.Display can be LCD display or LCDs.
The utility model also output terminal of the first gas fill port after the first digital pressure switch is provided with the first pressure transducer, and the output terminal of the second gas fill port after the second digital pressure switch is provided with the second pressure transducer; The first pressure transducer and the second pressure transducer join with single chip machine controlling circuit respectively, are used for the charge pressure value that Real-Time Monitoring is filled with tested photoelectric instrument, and detect data to the single chip machine controlling circuit transmission.
The utility model also can use casing of light-duty aluminum frame manufacture, precise pressure-reducing valve, single chip machine controlling circuit, digital pressure switch, solenoid valve etc. are installed in the casing, and the LCD display of detection port, pressure and constant voltage time is positioned on the front panel of casing.Stabilized voltage supply also is housed, so that the 220V AC power is converted to the required direct-current working volts such as single chip machine controlling circuit in casing.
Principle of work of the present utility model is: 200kPa clean dry nitrogen enters in the utility model photoelectric instrument air-leakage detector through detection port, dew point hygrometer in the online quality analysis module of nitrogen carries out the dewpoint temperature detection to the nitrogen of input, the nitrogen gas purity analyser carries out purity detecting to the nitrogen of input, and digital pressure gauge carries out gas pressure detection to the nitrogen of input; If the input gaseous mass does not reach the gaseous mass requirement of regulation, then single chip machine controlling circuit is opened gas bleed valve, and defective gas is discharged detector; If the input gaseous mass reaches the gaseous mass requirement of regulation, then utilize threeway that the nitrogen of input is distributed in the two-way gas fill port.In the two-way gas fill port, the gas of input is decompressed to two kinds of infrabar that pressure is different through the first precise pressure-reducing valve and the second precise pressure-reducing valve respectively; Two direct-acting electromagnetic valves are controlled its switching by single chip machine controlling circuit respectively, place a digital pressure switch behind each solenoid valve.Be tapped at two high precision the first pressure transducer and the second high-precision pressure sensors on the gas fill port, Real-Time Monitoring is filled with the charge pressure value of tested photoelectric instrument.
If inflationtime surpasses the longest inflationtime of regulation, and pressure does not reach setting value yet, represents that then tested photoelectric instrument has the gas leakage situation, single chip machine controlling circuit control LCD display and hummer send sound and light alarm; If inflationtime reaches the force value of setting in the longest inflationtime of regulation, when the force value of the gas pressure value of photoelectric instrument inner chamber and this detector inside stable during to two kinds of different infrabar, solenoid valve and digital pressure switch on two gas fill port of single chip machine controlling circuit control are closed, and the nitrogen source of the gas of input is discharged this detector by air-outlet valve.
Single chip machine controlling circuit utilizes the interior control of sheet software that inflationtime, charge pressure are carried out Real-Time Monitoring, at in setting time, the variation of the gas pressure value of photoelectric instrument inner chamber is not less than the gas pressure value of regulation, then think the requirement that touches the mark of the impermeability of tested photoelectric instrument inner chamber, single chip machine controlling circuit is shown in the impermeability testing result on the LCD display simultaneously.

Claims (2)

1. a photoelectric instrument air-leakage detector is characterized in that, includes:
Dew point hygrometer, join with nitrogen gas purity analyser, gas bleed valve and single chip machine controlling circuit respectively, for detection of the dewpoint temperature of input nitrogen, and the source of the gas that dewpoint temperature is not up to standard discharges by gas bleed valve, and dewpoint temperature source of the gas up to standard is outputed to the nitrogen gas purity analyser;
The nitrogen gas purity analyser, join with described dew point hygrometer, gas bleed valve, digital pressure gauge and single chip machine controlling circuit respectively, for detection of the purity of input nitrogen, and the source of the gas that purity is not up to standard discharges by gas bleed valve, and purity source of the gas up to standard is outputed to digital pressure gauge;
Digital pressure gauge, join with described nitrogen gas purity analyser, gas bleed valve, the first precise pressure-reducing valve, the second precise pressure-reducing valve and single chip machine controlling circuit respectively, pressure for detection of input nitrogen, and the source of the gas that pressure is not up to standard discharges by gas bleed valve, and pressure source of the gas up to standard is outputed to respectively the first precise pressure-reducing valve and the second precise pressure-reducing valve;
Gas bleed valve joins with described dew point hygrometer, described nitrogen gas purity analyser, described digital pressure gauge and single chip machine controlling circuit, is used for getting rid of source of the gas not up to standard;
The first precise pressure-reducing valve joins with described digital pressure gauge and the first solenoid valve respectively, and the pressure that is used for inputting source of the gas reduces pressure and exports after the first setting value;
The first solenoid valve joins with described the first precise pressure-reducing valve, the first digital pressure switch and single chip machine controlling circuit respectively, is used under the control of single chip machine controlling circuit the first gas fill port being carried out switch control;
The first digital pressure switch is joined with described the first solenoid valve and single chip machine controlling circuit respectively, is used under the control of single chip machine controlling circuit the first gas fill port being carried out switch control;
The second precise pressure-reducing valve joins with described digital pressure gauge and the second solenoid valve respectively, and the pressure that is used for inputting source of the gas reduces pressure and exports after the second setting value;
The second solenoid valve joins with described the second precise pressure-reducing valve, the second digital pressure switch and single chip machine controlling circuit respectively, is used under the control of single chip machine controlling circuit the second gas fill port being carried out switch control;
The second digital pressure switch is joined with described the second solenoid valve and single chip machine controlling circuit respectively, is used under the control of single chip machine controlling circuit the second gas fill port being carried out switch control;
Single chip machine controlling circuit, join with described dew point hygrometer, described nitrogen gas purity analyser, described digital pressure gauge, described blowdown valve, described the first solenoid valve, the described first digital pressure switch, described the second solenoid valve, the described second digital pressure switch, display and hummer respectively, be used for to the input source of the gas gaseous mass, carry out Real-Time Monitoring to inflationtime and the charge pressure of tested instrument inflation, and send display to show the impermeability testing result;
Display joins with described single chip machine controlling circuit, is used for showing the impermeability testing result; And
Hummer joins with described single chip machine controlling circuit, for giving alarm in the situation that gas leakage is arranged in detection.
2. photoelectric instrument air-leakage detector according to claim 1 is characterized in that, also includes:
The first pressure transducer is arranged on the gas channels of the described first digital pressure switch back, joins with described single chip machine controlling circuit, is used for the charge pressure value that Real-Time Monitoring is filled with tested photoelectric instrument; And
The second pressure transducer is arranged on the gas channels of the described second digital pressure switch back, joins with described single chip machine controlling circuit, is used for the charge pressure value that Real-Time Monitoring is filled with tested photoelectric instrument.
CN 201220459770 2012-09-11 2012-09-11 Photoelectric instrument gas-tightness detector Withdrawn - After Issue CN202814667U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220459770 CN202814667U (en) 2012-09-11 2012-09-11 Photoelectric instrument gas-tightness detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220459770 CN202814667U (en) 2012-09-11 2012-09-11 Photoelectric instrument gas-tightness detector

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CN202814667U true CN202814667U (en) 2013-03-20

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102829933A (en) * 2012-09-11 2012-12-19 中国人民解放军总装备部军械技术研究所 Air tightness detector for photoelectric instrument
CN105258865A (en) * 2015-06-09 2016-01-20 中山市天键电声有限公司 High-precision waterproof test apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102829933A (en) * 2012-09-11 2012-12-19 中国人民解放军总装备部军械技术研究所 Air tightness detector for photoelectric instrument
CN102829933B (en) * 2012-09-11 2014-10-08 中国人民解放军总装备部军械技术研究所 Air tightness detector for photoelectric instrument
CN105258865A (en) * 2015-06-09 2016-01-20 中山市天键电声有限公司 High-precision waterproof test apparatus

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GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20130320

Effective date of abandoning: 20141008

RGAV Abandon patent right to avoid regrant