CN105444968A - Air tightness pressure-maintaining test apparatus - Google Patents

Air tightness pressure-maintaining test apparatus Download PDF

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Publication number
CN105444968A
CN105444968A CN201510999398.9A CN201510999398A CN105444968A CN 105444968 A CN105444968 A CN 105444968A CN 201510999398 A CN201510999398 A CN 201510999398A CN 105444968 A CN105444968 A CN 105444968A
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CN
China
Prior art keywords
seal chamber
valve shaft
seal
described
pressure
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Application number
CN201510999398.9A
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Chinese (zh)
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CN105444968B (en
Inventor
孙丰
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苏州赛腾精密电子股份有限公司
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Priority to CN201510999398.9A priority Critical patent/CN105444968B/en
Publication of CN105444968A publication Critical patent/CN105444968A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors

Abstract

The invention belongs to the detection equipment technical field and relates to an air tightness pressure-maintaining test apparatus. The air tightness pressure-maintaining test apparatus comprises a first sealing cavity and a second sealing cavity; the first sealing cavity is connected with a gas source and is used for maintaining pressure and providing gas for the second sealing cavity; the second sealing cavity is used for accommodating a test device to be tested; a connecting pipeline between the first sealing cavity and the gas source and a connecting pipeline between the first sealing cavity and the second sealing cavity are both provided with a control device; the control device is used for gas communication and gas interruption control; the air tightness pressure maintaining test apparatus further comprises a first pressure detection device and a second pressure detection device which are respectively used for detecting pressure in the first sealing cavity and the second sealing cavity. With the air tightness pressure-maintaining test apparatus adopted, the air tightness of the device to be tested can be detected quickly and accurately. The air tightness pressure maintaining test apparatus has the advantages of simple structure, low manufacturing cost and low cost.

Description

A kind of airtight pressurize testing apparatus

Technical field

The present invention relates to checkout equipment technical field, particularly relate to a kind of airtight pressurize testing apparatus.

Background technology

Airtight pressure-maintaining test device is for mobile phone, the pressurize of the airtight test of electronic watch, voltage adjusting device.Along with the development of society, human cost by liter, the rise of robotization industry, widely using of automation equipment, cannot replace, and wideling popularize of this important tool of automation equipment, can save a large amount of man power and materials to every profession and trade.The quality improving product can be played, increase the object of Economic returns.

Under this background, the airtight equipment of detection industry robotization is also applied and gives birth to.But there is complex structure in existing airtight detecting apparatus, the problem that manufacturing cost and use cost is higher.

For the problems referred to above, provide a kind of airtight pressurize testing apparatus, it can solve in existing technology exists complex structure, the problem that manufacturing cost and use cost is high.

Summary of the invention

The object of the invention is to propose a kind of airtight pressurize testing apparatus, can solve in prior art and there is complex structure, the problem that manufacturing cost and use cost is high.

For reaching this object, the present invention by the following technical solutions:

A kind of airtight pressurize testing apparatus, it comprises the first seal chamber and the second seal chamber, and wherein, described first seal chamber is connected with source of the gas, and for pressurize and to the second seal chamber air feed, described second seal chamber is for placing tested device;

Connecting line between described first seal chamber and source of the gas and the connecting line between the first seal chamber and the second seal chamber are provided with control device, and this control device is used for ventilation, control of dying;

Also comprise the first pressure-detecting device and the second pressure-detecting device that are respectively used to pressure in detection first seal chamber and the second seal chamber.

As a kind of preferred version of above-mentioned airtight pressurize testing apparatus, described control device comprises valve shaft and axis hole, and described valve shaft and axis hole are slidably connected, and described valve shaft is provided with annular groove;

Be arranged on valve shaft between the first seal chamber and source of the gas and axis hole is the first valve shaft and the first axis hole, be arranged on valve shaft between the first seal chamber and the second seal chamber and axis hole is the second valve shaft and the second axis hole;

Also comprise gas source inlet and the first seal chamber import, under being in the state of dying, gas source inlet is communicated with the annular groove of the first valve shaft, first seal chamber import is closed by the first valve shaft, under being in aeration status, gas source inlet and the first seal chamber import are all communicated with annular groove and both are communicated with by annular groove;

Also comprise the first seal chamber outlet and the second seal chamber import, under being in the state of dying, first seal chamber outlet is communicated with the annular groove of the second valve shaft, second seal chamber import is sealed by the second valve shaft, under being in aeration status, the first seal chamber outlet is all communicated with the annular groove of the second valve shaft with the second seal chamber import and both are communicated with by annular groove.

As a kind of preferred version of above-mentioned airtight pressurize testing apparatus, described valve shaft is provided with three O-ring seals, the first O-ring seal, the second O-ring seal and the 3rd O-ring seal respectively, wherein, first O-ring seal and the second O-ring seal are separately positioned on the two ends of annular groove, and the 3rd O-ring seal and the second O-ring seal interval arrange and be positioned at the region except annular groove;

Under being in the state of dying, described gas source inlet is between first O-ring seal and the second O-ring seal of the first valve shaft, described first seal chamber import is between second O-ring seal and the 3rd O-ring seal of the first valve shaft, under being in aeration status, described gas source inlet and the first seal chamber import are all between first O-ring seal and the second O-ring seal of the first valve shaft;

Under being in the state of dying, described first seal chamber outlet is between first O-ring seal and the second O-ring seal of the second valve shaft, described second seal chamber import is between second O-ring seal and the 3rd O-ring seal of the second valve shaft, when being in aeration status, described first seal chamber outlet and the second seal chamber import are all between first O-ring seal and the second O-ring seal of the second valve shaft.

As a kind of preferred version of above-mentioned airtight pressurize testing apparatus, the two ends of described valve shaft are connected to cylinder and spring, the to-and-fro movement under the effect of cylinder and spring of this valve shaft.

As a kind of preferred version of above-mentioned airtight pressurize testing apparatus, the two ends of described valve shaft are arranged with linear bearing, and described valve shaft is arranged in axis hole by linear bearing.

As a kind of preferred version of above-mentioned airtight pressurize testing apparatus, in described first seal chamber, be provided with pressure regulation block, the quantity of described pressure regulation block and/or volume-tunable.

As a kind of preferred version of above-mentioned airtight pressurize testing apparatus, described first seal chamber and the second seal chamber are provided with opening and openend is provided with sealing cover body to be opened/closed.

As a kind of preferred version of above-mentioned airtight pressurize testing apparatus, described pressure-detecting device is pressure transducer.

As a kind of preferred version of above-mentioned airtight pressurize testing apparatus, also comprise disposal system, described disposal system, described control device, the first pressure-detecting device are all connected with disposal system communication with the second pressure-detecting device, and described disposal system controls the operation of control device according to the detected value of the first pressure-detecting device and the second pressure-detecting device.

Beneficial effect of the present invention is: the application can be detected the impermeability of tested device fast and accurately by the cooperation of the first seal chamber, the second seal chamber, control device and pressure-detecting device, and it is simple to have structure, the advantage that manufacturing cost and use cost is low.

Accompanying drawing explanation

fig. 1it is the structural representation of the airtight pressurize testing apparatus that the specific embodiment of the invention provides figure;

fig. 2analysing and observe of the airtight pressurize testing apparatus that provides of the specific embodiment of the invention figure.

Wherein:

1: the first seal chamber; 2: the first gland bonnets; 3: the second seal chambers; 4: the second gland bonnets; 5: the second pressure-detecting devices; 6: the second cylinders; 7: the first pressure-detecting devices; 8: the first cylinders; 9: tested device; 10: first passage; 11: the first seal chamber outlets; 12: second channel; 13: the second valve shafts; 14: the second springs; 15: the first seal chamber cavity volumes; 16: the first valve shafts; 17: the first springs; 18: the three O-ring seals; 19: the first seal chamber imports; 20: the second O-ring seals; 21: gas source inlet; 22: the first O-ring seals; 23: pressure regulation block; 24: linear bearing.

Embodiment

Below in conjunction with accompanying drawingand further illustrate technical scheme of the present invention by embodiment.

as Fig. 1shown in, present embodiments provide for a kind of airtight pressurize testing apparatus, airtight pressurize testing apparatus comprises the first seal chamber 1 and the second seal chamber 3, wherein, first seal chamber 1 is connected with source of the gas, and for pressurize and to the second seal chamber 3 air feed, the second seal chamber 3 is for placing tested device 9.

Connecting line between first seal chamber 1 and source of the gas and the connecting line between the first seal chamber 1 and the second seal chamber 3 are provided with control device, and this control device is used for ventilation, control of dying.

Also comprise the first pressure-detecting device 7 and the second pressure-detecting device 5 being respectively used to pressure in detection first seal chamber 1 and the second seal chamber 3.

The application can be detected the impermeability of tested device 9 fast and accurately by said structure, and it is simple to have structure, the advantage that manufacturing cost and use cost is low.

The concrete structure of above-mentioned control device is: control device comprises valve shaft and axis hole, and valve shaft and axis hole are slidably connected, and valve shaft is provided with annular groove.

Be arranged on valve shaft between the first seal chamber 1 and source of the gas and axis hole is the first valve shaft 16 and the first axis hole, be arranged on valve shaft between the first seal chamber 1 and the second seal chamber 3 and axis hole is the second valve shaft 13 and the second axis hole.

Also comprise gas source inlet 21 and the first seal chamber import 19, under being in the state of dying, gas source inlet 21 is communicated with the annular groove of the first valve shaft 16, first seal chamber import 19 is closed by the first valve shaft 16, under being in aeration status, gas source inlet 21 and the first seal chamber import 19 are all communicated with annular groove and both are communicated with by annular groove.

Also comprise the first seal chamber outlet 11 and the second seal chamber import, the second channel 12 that concrete the comprising of the second seal chamber import is positioned at the first passage 10 on the second seal chamber 3 and is positioned on the first seal chamber 1.Under being in the state of dying, first seal chamber outlet 11 is communicated with the annular groove of the second valve shaft 13, second channel 12 entrance point of the second seal chamber import is sealed by the second valve shaft 13, under being in aeration status, the first seal chamber outlet 11 is all communicated with the annular groove of the second valve shaft 13 with second channel 12 entrance point of the second seal chamber import and both are communicated with by annular groove.

In order to increase the impermeability of valve shaft, valve shaft is provided with three O-ring seals, the first O-ring seal 22, second O-ring seal 20 and the 3rd O-ring seal 18 respectively, wherein, first O-ring seal 22 and the second O-ring seal 20 are separately positioned on the two ends of annular groove, and the 3rd O-ring seal 18 and the second O-ring seal 20 interval arrange and be positioned at the region except annular groove.

Under being in the state of dying, gas source inlet 21 is between first O-ring seal 22 and the second O-ring seal 20 of the first valve shaft 16, first seal chamber import 11 is between second O-ring seal 20 and the 3rd O-ring seal 18 of the first valve shaft 16, under being in aeration status, gas source inlet 21 and the first seal chamber import 11 are all between first O-ring seal 22 and the second O-ring seal 20 of the first valve shaft 16.

Under being in the state of dying, first seal chamber outlet 11 is between first O-ring seal 22 and the second O-ring seal 20 of the second valve shaft 13, the import of the second seal chamber 20 is between second O-ring seal 20 and the 3rd O-ring seal 18 of the second valve shaft 13, when being in aeration status, second channel 12 inlet end of the first seal chamber outlet 11 and the second seal chamber import is all between first O-ring seal 22 and the second O-ring seal 20 of the second valve shaft 13.

In the present embodiment, disconnected by the to-and-fro movement of the first valve shaft 16 connected sum realized between gas source inlet 21 and the first seal chamber import 19, disconnected by the to-and-fro movement of the second valve shaft 13 connected sum realized between the first seal chamber outlet 11 and second channel 12 entrance point of the second seal chamber.The concrete structure that the to-and-fro movement realizing valve shaft adopts is: the two ends of valve shaft are connected to cylinder and spring, the to-and-fro movement under the effect of cylinder and spring of this valve shaft.The cylinder and the spring that are arranged on the first valve shaft 16 two ends are respectively the first cylinder 8 and the first spring 17, and the cylinder and the spring that are arranged on the second valve shaft 13 two ends are respectively the second cylinder 6 and the second spring 14.

For the ease of the movement of valve shaft, the two ends of valve shaft are arranged with linear bearing 24, and valve shaft is arranged in axis hole by linear bearing 24.

In order to control the air inflow of the first annular seal space 1 and the second annular seal space 3 accurately, be provided with pressure regulation block 23 in the first seal chamber 1, the quantity of this pressure regulation block 23 and/or volume-tunable.Concrete, the first seal chamber 1 comprises the first seal chamber cavity volume 15, and pressure regulation block 23 is arranged in the first seal chamber cavity volume 15.

For the ease of opening and closing the first seal chamber 1 and the second seal chamber 3, first seal chamber 1 and the second seal chamber 3 are provided with opening and openend is provided with sealing cover body to be opened/closed, the sealing cover body be arranged on the first seal chamber 1 is the first gland bonnet 2, and the sealing cover body be arranged on the second seal chamber 3 is the second gland bonnet 4.

Above-mentioned pressure-detecting device is pressure transducer.

Airtight pressurize testing apparatus also comprises disposal system, control device, the first pressure-detecting device 7 are all connected with disposal system communication with the second pressure-detecting device 5, disposal system controls the operation of control device according to the detected value of the first pressure-detecting device 7 and the second pressure-detecting device 5, and then realize regulating the pressure in the first seal chamber 1 and the second seal chamber 3, and detect.

In order to be further explained above-mentioned airtight pressurize testing apparatus, present invention also provides the concrete course of work of above-mentioned airtight pressurize testing apparatus.Specifically as described below:

The ventilation of the first seal chamber 1, control of dying: gas enters from gas source inlet 21, now gas source inlet 21 is positioned at the annular groove place of the first valve shaft 16, first seal chamber import 19 is sealed by the first valve shaft 16 between second O-ring seal 20 and the 3rd O-ring seal 18 of the first valve shaft 16, and gas source inlet 21 and the first seal chamber import 19 are not communicated with gas can not enter the first seal chamber 1.The cylinder be connected with the first valve shaft 16 drives the first valve shaft 16 to move, and make gas source inlet 21 and the first seal chamber import 19 all be positioned at the annular groove place of the first valve shaft 16, both are communicated with by annular groove, and gas enters in the first seal chamber 1.After the pressure detected in the first seal chamber 1 through the pressure-detecting device on the first seal chamber 1 reaches set pressure, the first valve shaft 16, under the drive of cylinder and under the effect of spring, is reset to initial position, enters packing state.

The ventilation of the second seal chamber 3, control of dying, the ventilation of the second seal chamber 3, dying controls and the ventilation of the first seal chamber 1, control procedure of dying and identical, and it realizes the first seal chamber by the to-and-fro movement of the second valve shaft 13 to export 11 and second connections between seal chamber import or disconnection.

The test mode of product, when the pressure in the second seal chamber 3 reaches setup pressure value, pressurize a period of time, if the change value of pressure in the second seal chamber 3, in the pressure constant interval of setting, judges that product has good impermeability, otherwise judge that the impermeability of product is poor.

Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.

Claims (9)

1. an airtight pressurize testing apparatus, it is characterized in that, comprise the first seal chamber (1) and the second seal chamber (3), wherein, described first seal chamber (1) is connected with source of the gas, and for pressurize and to the second seal chamber (3) air feed, described second seal chamber (3) is for placing tested device;
Connecting line between described first seal chamber (1) and source of the gas and the connecting line between the first seal chamber (1) and the second seal chamber (3) are provided with control device, and this control device is used for ventilation, control of dying;
Also comprise the first pressure-detecting device (7) and the second pressure-detecting device (5) that are respectively used to detection first seal chamber (1) and the second seal chamber (3) interior pressure.
2. airtight pressurize testing apparatus according to claim 1, it is characterized in that, described control device comprises valve shaft and axis hole, and described valve shaft and axis hole are slidably connected, and described valve shaft is provided with annular groove;
Be arranged on valve shaft between the first seal chamber (1) and source of the gas and axis hole is the first valve shaft (16) and the first axis hole, be arranged on valve shaft between the first seal chamber (1) and the second seal chamber (3) and axis hole is the second valve shaft (13) and the second axis hole;
Also comprise gas source inlet (21) and the first seal chamber import (19), under being in the state of dying, gas source inlet (21) is communicated with the annular groove of the first valve shaft (16), first seal chamber import (19) is closed by the first valve shaft (16), under being in aeration status, gas source inlet (21) is all communicated with annular groove with the first seal chamber import (19) and both are communicated with by annular groove;
Also comprise the first seal chamber outlet (11) and the second seal chamber import, under being in the state of dying, first seal chamber outlet (11) is communicated with the annular groove of the second valve shaft (13), second seal chamber import is sealed by the second valve shaft (13), under being in aeration status, the first seal chamber outlet (11) is all communicated with the annular groove of the second valve shaft (13) with the second seal chamber import and both are communicated with by annular groove.
3. airtight pressurize testing apparatus according to claim 2, it is characterized in that, described valve shaft is provided with three O-ring seals, the first O-ring seal (22), the second O-ring seal (20) and the 3rd O-ring seal (18) respectively, wherein, first O-ring seal (22) and the second O-ring seal (20) are separately positioned on the two ends of annular groove, and the 3rd O-ring seal (18) and the second O-ring seal (20) interval arrange and be positioned at the region except annular groove;
Under being in the state of dying, described gas source inlet (21) is positioned between first O-ring seal (22) of the first valve shaft (16) and the second O-ring seal (20), described first seal chamber import (19) is positioned between second O-ring seal (20) of the first valve shaft (16) and the 3rd O-ring seal (18), under being in aeration status, described gas source inlet (21) and the first seal chamber import (19) are all positioned between first O-ring seal (22) of the first valve shaft (16) and the second O-ring seal (20);
Under being in the state of dying, described first seal chamber outlet (11) is positioned between first O-ring seal (22) of the second valve shaft (13) and the second O-ring seal (20), described second seal chamber import is positioned between second O-ring seal (20) of the second valve shaft (13) and the 3rd O-ring seal (18), when being in aeration status, described first seal chamber outlet (11) and the second seal chamber import are all positioned between first O-ring seal (22) of the second valve shaft (13) and the second O-ring seal (20).
4. airtight pressurize testing apparatus according to claim 2, is characterized in that, the two ends of described valve shaft are connected to cylinder and spring, the to-and-fro movement under the effect of cylinder and spring of this valve shaft.
5. airtight pressurize testing apparatus according to claim 2, is characterized in that, the two ends of described valve shaft are arranged with linear bearing (24), and described valve shaft is arranged in axis hole by linear bearing (24).
6. airtight pressurize testing apparatus according to claim 1, is characterized in that, is provided with pressure regulation block (23) in described first seal chamber (1), the quantity of described pressure regulation block (23) and/or volume-tunable.
7. airtight pressurize testing apparatus according to claim 1, is characterized in that, described first seal chamber (1) and the second seal chamber (3) is provided with opening and openend is provided with sealing cover body to be opened/closed.
8. airtight pressurize testing apparatus according to claim 1, is characterized in that, described pressure-detecting device is pressure transducer.
9. airtight pressurize testing apparatus according to claim 1, it is characterized in that, also comprise disposal system, described control device, the first pressure-detecting device (7) are all connected with disposal system communication with the second pressure-detecting device (5), and described disposal system controls the operation of control device according to the detected value of the first pressure-detecting device (7) and the second pressure-detecting device (5).
CN201510999398.9A 2015-12-28 2015-12-28 A kind of airtight pressure maintaining test equipment CN105444968B (en)

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CN201510999398.9A CN105444968B (en) 2015-12-28 2015-12-28 A kind of airtight pressure maintaining test equipment

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CN105444968A true CN105444968A (en) 2016-03-30
CN105444968B CN105444968B (en) 2019-01-11

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CN106153268A (en) * 2016-08-24 2016-11-23 昆山杰士德精密工业有限公司 Wrist-watch air tightness detection equipment

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Publication number Priority date Publication date Assignee Title
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CN106153268B (en) * 2016-08-24 2018-06-15 江苏杰士德精密工业有限公司 Wrist-watch air tightness detection equipment

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