CN201133863Y

CN201133863Y - Gas-tight seal measuring apparatus

Info

Publication number: CN201133863Y
Application number: CNU2007201990841U
Authority: CN
Inventors: 王正明
Original assignee: Shanghai Siemens Mobile Communication Ltd
Current assignee: Nokia Solutions and Networks Shanghai Ltd
Priority date: 2007-12-11
Filing date: 2007-12-11
Publication date: 2008-10-15
Anticipated expiration: 2017-12-11

Abstract

A tightness-measuring device used to measure the tightness of outdoor communication equipment comprises an aeration structure and a control structure, wherein, the aeration structure is composed of an air pump, a pressure-regulating valve, an aeration flow controller and a testing air pipe, which are orderly cascaded together, and the control structure is composed of a power supply, a testing switch and timing relays. The power supply lines of the power supply are connected to the testing switch and the timing relays, the control circuits of the testing switch are connected to the aeration flow controller and the timing relays, and the signal-controlling circuit of the timing relays is connected to the aeration flow controller. The tightness-measuring device adopts tightness measurement to judge the tightness of the tested product and can resolve the defects of the prior art which applies water-proof measurement to judge tightness, boosted flow and time length can be accurately controlled and regulated, and the tightness-measuring device can conveniently and quickly detect each weakness of a sealed structure and provide technical data for optimizing product designs and improving the structure of a sealed body.

Description

The gas tightness measurement mechanism

[technical field]

The utility model is relevant with measurement mechanism, specifically a kind of gas tightness measurement mechanism that is used to measure the outdoor communication equipment sealing.

[background technology]

Outdoor communication equipment has very high sealing requirements.In order to check the assembly technology quality of product sealed body structure, in the prior art, usually adopt its water resistance of measurement to judge its sealing, to transfer to setting as the pump working pressure of detection source, by giant, water is directly injected to the surface of product seal, at the appointed time, by the impact of water, survey the anti-water penetrating power that seal has to seal.After finishing the water spray operation, must open the sealed body structure of test product, check whether seal inside intakes, yet, such operation, except using the place big, efficient is low, beyond the high defective of executory cost, to cause following problem inevitably: one, the sealed body structure that is opened must do to restore for the second time assembling, this is a series of manual setting, and can not do the check of sealing quality again, can only lean on people's sensation to guarantee, the final waterproof ability of product fails to be reflected qualitatively at least in theory, and the potential risk that breaks down exists forever; Its two, if defective incident takes place, water can flow directly into seal inside, injures some water funk materials, loss is unavoidable.For this reason, manage to substitute anti-water gaging, then can avoid above-mentioned problems with airtightness measurement.

[summary of the invention]

The purpose of this utility model designs a kind of gas tightness measurement mechanism exactly, can be used for outdoor communication equipment is carried out airtightness measurement, judges its sealing property.

The utility model adopts following technical proposal: a kind of gas tightness measurement mechanism, comprise the inflatable structure of forming by air pump, pressure regulator valve, flow of aerating air controller and the test tracheae that is connected with the measured piece air intake opening, control structure by power supply, Test Switchboard and timing relay are formed is characterized in that: have pipeline to be connected in series air pump, pressure regulator valve, flow of aerating air controller and test tracheae successively in the inflatable structure; The supply line of power supply is connected to Test Switchboard and timing relay in the control structure; The control circuit of Test Switchboard is connected to flow of aerating air controller and timing relay, and the control signal circuit of timing relay is connected to the flow of aerating air controller.

Make gas replenishment process steady in order effectively to control airshed, airshed is implemented to grade control, described flow of aerating air controller can be made of an inflation big flow controller and an inflation Small Flow Control device serial connection, and inflation Small Flow Control device is connected with described test tracheae; The control circuit of described Test Switchboard is connected to an interface of inflation Small Flow Control device, and the control signal circuit of described timing relay is connected to another interface of inflation Small Flow Control device.

In order after measuring end, can steadily to exit, the measure of taking is: tell one the tunnel by the flow of aerating air controller and be connected in series an exhaust Small Flow Control device and an exhaust big flow controller successively with the gas exhaust duct of test tracheae parallel connection, the exhaust big flow controller has the exhausr port that passes to atmosphere, and the control circuit of described Test Switchboard has one the tunnel to be connected to exhaust Small Flow Control device.

In order in measuring process, to control inflationtime and to hold one's breath the time, described timing relay is made up of the inflation timing relay and the timing relay two parts of holding one's breath, and wherein inflates timing relay and is connected with control circuit by described control signal circuit with described Test Switchboard with described flow of aerating air controller; The timing relay of holding one's breath has two input interfaces to be connected with Test Switchboard with the inflation timing relay respectively, also has an output interface to connect a hummer, and described power supply has one tunnel output to be connected to hummer.

Described pressure regulator valve and flow of aerating air controller are furnished with rain glass, judge from two barometric readings whether test product leaks gas.

The utility model adopts the air-tightness measurement to judge the test product sealing, can overcome prior art and judge the shortcoming of sealing with anti-water gaging, the flow size, time length of boosting is accurately controllable, easy each weak link that detects hermetically-sealed construction apace of energy is for optimizing product design, improving the support that sealed body structure provides technical data.

[description of drawings]

Accompanying drawing is the utility model embodiment pipeline circuit connection diagram.

[embodiment]

Be described further below in conjunction with the utility model embodiment and accompanying drawing thereof.

See a kind of gas tightness measurement mechanism shown in the accompanying drawing, comprise inflatable structure and control structure, inflatable structure is made up of air pump 1, pressure regulator valve 3, flow of aerating air controller and the test tracheae 17 that is connected with measured piece air intake opening (not shown); Control structure is made up of power supply 12, Test Switchboard 13 and timing relay 14,15.Have pipeline to be connected in series air pump 1, pressure regulator valve 3, flow of aerating

air controller

7,8 and test tracheae 17 successively in the inflatable structure, wherein noise and the Purge gas in order to alleviate gas can be provided with exhaust box 2 and oil-water separator 5 in pressure regulator valve 3 pipelines on two sides.The

supply line

34,33,32 of power supply 12 is connected to Test Switchboard 13 and

timing relay

14,15 in the control structure; The

control circuit

46,44,43 of Test Switchboard 13 is connected to flow of aerating air controller and

timing relay

14,15, and the control signal circuit 45 of timing relay is connected to the flow of aerating air controller.

Make gas replenishment process steady in order effectively to control airshed, airshed is implemented to grade control, the flow of aerating air controller can be made of an inflation big flow controller 7 and inflation Small Flow Control device 8 serial connections.7 pairs of flows greater than 5 liters/minute of inflation big flow controller are carried out control, and 8 pairs of flows less than 3 liters/minute of inflation Small Flow Control device are carried out control and are connected with test tracheae 17.The control circuit 46 of Test Switchboard 13 is connected to an interface of inflation Small Flow Control device 8, and the control signal circuit 45 of timing relay is connected to another interface of inflation Small Flow Control device 8.

In order in measuring process, to control inflationtime and to hold one's breath the time, timing relay is made up of the inflation timing relay 14 and timing relay 15 two parts of holding one's breath, and wherein inflates timing relay 14 and is connected with control circuit 44 by control signal circuit 45 with Test Switchboard 13 with inflation Small Flow Control device 8; The timing relay 15 of holding one's breath has two input interfaces to be connected with control circuit 43 with Test Switchboard 13 usefulness control signal circuit 42 with inflation timing relay 14 respectively, also have an output interface to connect a hummer 16 with control signal circuit 41, power supply 12 has one tunnel supply line 31 to be connected to hummer.

In order after measuring end, can steadily to exit, the measure of taking is: tell one the tunnel in the rear end of inflation Small Flow Control device 8 and be connected in series an exhaust Small Flow Control device 10 and an exhaust big flow controller 11 successively with the gas exhaust duct of testing tracheae 17 parallel connections, exhaust big flow controller 11 has the exhausr port that passes to atmosphere to lead to atmosphere, and Test Switchboard 13 has No. one control circuit 47 to be connected to exhaust Small Flow Control device 10.

Pressure regulator valve 3 and flow of aerating air controller are furnished with rain glass 4 and 9, can judge from the reading of two rain glasss 4 and 9 whether test product leaks gas.

In pressure regulator valve 3 rear ends an air-flow shunt 6 can be set, except test gas being introduced the above-mentioned loading line, the loading line that can also introduce other respectively carries out the inflation test of multitube road, other loading line is the same with structure of the present utility model, has just lacked the structure of air-flow shunt 6 front ends.

The utility model operating process is: press the seal request of different product, this device is pre-set controlled variable such as time, flow, manually will test tracheae 17 and be connected to the input port that test product is provided with, the Test Switchboard 13 of artificial device for opening.At this moment, Test Switchboard 13 is closed exhaust Small Flow Control device 10, is opened inflation Small Flow Control device 8 and by control circuit 44 inflation timing relay 14 is picked up counting by control circuit 46 by control circuit 47, and device enters aeration phase.Test gas enters test product through exhaust box 2, pressure regulator valve 3, air-flow shunt 6, inflation big flow controller 7, inflation Small Flow Control device 8, test tracheae 17 successively by air pump 1.Inflationtime finishes, and inflation timing relay 14 cuts out inflation Small Flow Control device 8 by control signal circuit 45 and cuts off gas transmission, and device enters the pressure maintenance stage, simultaneously, starts timing relay 15 timing of holding one's breath by control signal circuit 42.The pressure end of holding time, the timing relay 15 of holding one's breath starts hummers 16 by control signal circuit 41 and reports to the police.Close Test Switchboard 13 after manually checking the device to test result, Test Switchboard 13 is opened exhaust Small Flow Control device 10 by control circuit 47, test gas pressure release in the test product, enter atmosphere by exhaust Small Flow Control device 10, exhaust big flow controller 11, manually extract tracheae, end of test (EOT).

Claims

1. gas tightness measurement mechanism, comprise the inflatable structure of forming by air pump, pressure regulator valve, flow of aerating air controller and the test tracheae that is connected with the measured piece air intake opening, control structure by power supply, Test Switchboard and timing relay are formed is characterized in that: have pipeline to be connected in series air pump, pressure regulator valve, flow of aerating air controller and test tracheae successively in the inflatable structure; The supply line of power supply is connected to Test Switchboard and timing relay in the control structure; The control circuit of Test Switchboard is connected to flow of aerating air controller and timing relay, and the control signal circuit of timing relay is connected to the flow of aerating air controller.

2. according to the described gas tightness measurement mechanism of claim 1, it is characterized in that described flow of aerating air controller is made of an inflation big flow controller and an inflation Small Flow Control device serial connection, inflation Small Flow Control device is connected with described test tracheae; The control circuit of described Test Switchboard is connected to an interface of inflation Small Flow Control device, and the control signal circuit of described timing relay is connected to another interface of inflation Small Flow Control device.

3. according to the described gas tightness measurement mechanism of claim 1, it is characterized in that telling one the tunnel by the flow of aerating air controller is connected in series an exhaust Small Flow Control device and an exhaust big flow controller successively with the gas exhaust duct of test tracheae parallel connection, the exhaust big flow controller has the exhausr port that passes to atmosphere, and the control circuit of described Test Switchboard has one the tunnel to be connected to exhaust Small Flow Control device.

4. according to the described gas tightness measurement mechanism of claim 1, it is characterized in that described timing relay is made up of the inflation timing relay and the timing relay two parts of holding one's breath, wherein inflate timing relay and be connected with control circuit by described control signal circuit with described Test Switchboard with described flow of aerating air controller; The timing relay of holding one's breath has two input interfaces to be connected with Test Switchboard with the inflation timing relay respectively, also has an output interface to connect a hummer, and described power supply has one tunnel output to be connected to hummer.

5. according to the described gas tightness measurement mechanism of claim 1, it is characterized in that described pressure regulator valve and flow of aerating air controller be furnished with rain glass.