CN105444968B - A kind of airtight pressure maintaining test equipment - Google Patents
A kind of airtight pressure maintaining test equipment Download PDFInfo
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- CN105444968B CN105444968B CN201510999398.9A CN201510999398A CN105444968B CN 105444968 B CN105444968 B CN 105444968B CN 201510999398 A CN201510999398 A CN 201510999398A CN 105444968 B CN105444968 B CN 105444968B
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- valve shaft
- space body
- seal space
- sealing ring
- annular seal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating 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
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention relates to detection device technical field more particularly to a kind of airtight pressure maintaining test equipments.Airtight pressure maintaining test equipment includes first annular seal space body and the second seal cavity, wherein the first annular seal space body is connect with gas source, and is supplied for pressure maintaining and to the second seal cavity, and second seal cavity is for placing tested device；Be provided with control device on the connecting line between connecting line and first annular seal space body and the second seal cavity between the first annular seal space body and gas source, the control device for ventilate, control of dying；It further include the first pressure detection device and second pressure detection device for being respectively used to pressure in detection first annular seal space body and the second seal cavity.The present invention can fast and accurately detect the air-tightness of tested device by above structure, and have structure simple, the low advantage of manufacturing cost and use cost.
Description
Technical field
The present invention relates to detection device technical field more particularly to a kind of airtight pressure maintaining test equipments.
Background technique
Airtight pressure-maintaining test device is for mobile phone, the pressure maintaining of the airtight test of electronic watch, voltage adjusting device.With the hair of society
Exhibition, human cost by liter, automate the rise of industry, automation equipment is widely used, and can not replace, and automatic
Change wideling popularize for this important tool of equipment, a large amount of man power and material can be saved to every profession and trade.Raising can be played to produce
The quality of product increases the purpose of Economic returns.
In this background, detection industry automates airtight equipment and also applies and give birth to.But existing airtight detecting apparatus
In the presence of structure is complicated, the higher problem of manufacturing cost and use cost.
In view of the above-mentioned problems, providing a kind of airtight pressure maintaining test equipment, it is able to solve in existing technology and there is knot
Structure is complicated, the high problem of manufacturing cost and use cost.
Summary of the invention
It is an object of the invention to propose a kind of airtight pressure maintaining test equipment, it is able to solve that structure exists in the prior art is multiple
It is miscellaneous, the high problem of manufacturing cost and use cost.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of airtight pressure maintaining test equipment comprising first annular seal space body and the second seal cavity, wherein described first is close
Envelope cavity connect with gas source, and for pressure maintaining and to the second seal cavity supply, second seal cavity be used for placement to
Test device；
Between connecting line and first annular seal space body and the second seal cavity between the first annular seal space body and gas source
Connecting line on be provided with control device, the control device for ventilate, control of dying；
It further include the first pressure detection device for being respectively used to pressure in detection first annular seal space body and the second seal cavity
With second pressure detection device.
As a kind of preferred embodiment of above-mentioned airtight pressure maintaining test equipment, the control device includes valve shaft and axis hole,
The valve shaft is slidably connected with axis hole, is provided with annular groove on the valve shaft；
Valve shaft between first annular seal space body and gas source is set and axis hole is the first valve shaft and first shaft hole, setting
Valve shaft and axis hole between first annular seal space body and the second seal cavity are the second valve shaft and the second axis hole；
Further include gas source inlet and first annular seal space body import, dies under state when being in, gas source inlet and the first air valve
The annular groove of axis is connected to, and the import of first annular seal space body close by the first valve shaft, under aeration status, gas source inlet with
The import of first annular seal space body is connected to annular groove and the two is connected to by annular groove；
Further include the outlet of first annular seal space body and the second seal cavity import, dies under state when being in, first annular seal space
Body outlet is connected to the annular groove of the second valve shaft, and the second seal cavity import is by the second air valve sealing, when in ventilation
Under state, first annular seal space body is exported and the second seal cavity import is connected to the annular groove of the second valve shaft and the two is logical
Cross annular groove connection.
As a kind of preferred embodiment of above-mentioned airtight pressure maintaining test equipment, it is arranged on the valve shaft there are three sealing ring,
It is the first sealing ring, the second sealing ring and third sealing ring respectively, wherein the first sealing ring and the second sealing ring are separately positioned on
The both ends of annular groove, third sealing ring and the second sealing ring interval are arranged and are located at the region in addition to annular groove；
When in dying under state, the gas source inlet be located at the first valve shaft the first sealing ring and the second sealing ring it
Between, the first annular seal space body import is located between the second sealing ring and third sealing ring of the first valve shaft, when in ventilation
Under state, the gas source inlet and first annular seal space body import are respectively positioned on the first sealing ring and the second sealing ring of the first valve shaft
Between；
When in dying under state, the first annular seal space body outlet is located at the first sealing ring and the of the second valve shaft
Between two sealing rings, the second seal cavity import is located between the second sealing ring and third sealing ring of the second valve shaft,
When being in aeration status, it is first close to be respectively positioned on the second valve shaft for first annular seal space body outlet and the second seal cavity import
Between seal and the second sealing ring.
As a kind of preferred embodiment of above-mentioned airtight pressure maintaining test equipment, the both ends of the valve shaft are connected separately with cylinder
And spring, the valve shaft move back and forth under the action of cylinder and spring.
As a kind of preferred embodiment of above-mentioned airtight pressure maintaining test equipment, the both ends of the valve shaft are arranged with linear axis
It holds, the valve shaft is mounted in axis hole by linear bearing.
As a kind of preferred embodiment of above-mentioned airtight pressure maintaining test equipment, pressure regulation is provided in the first annular seal space body
Block, the quantity and/or volume-tunable of the pressure regulation block.
As a kind of preferred embodiment of above-mentioned airtight pressure maintaining test equipment, the first annular seal space body and the second seal cavity
On be provided be open and open end is provided with sealing cover body to be opened/closed.
As a kind of preferred embodiment of above-mentioned airtight pressure maintaining test equipment, the pressure-detecting device is pressure sensor.
It further include processing system as a kind of preferred embodiment of above-mentioned airtight pressure maintaining test equipment, the processing system, institute
State control device, first pressure detection device and second pressure detection device with processing system communication connection, the processing system
System controls the operation of control device according to the detected value of first pressure detection device and second pressure detection device.
The invention has the benefit that the application passes through first annular seal space body, the second seal cavity, control device and pressure
The cooperation of detection device can fast and accurately detect the air-tightness of tested device, and have structure simple, system
Make the advantage low with use cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the airtight pressure maintaining test equipment that the specific embodiment of the invention provides；
Fig. 2 is the cross-sectional view for the airtight pressure maintaining test equipment that the specific embodiment of the invention provides.
Wherein:
1: first annular seal space body；2: the first sealing covers；3: the second seal cavities；4: the second sealing covers；5: second pressure inspection
Survey device；6: the second cylinders；7: first pressure detection device；8: the first cylinders；9: tested device；10: first passage；11:
The outlet of first annular seal space body；12: second channel；13: the second valve shafts；14: second spring；15: first annular seal space body cavity；
16: the first valve shafts；17: the first springs；18: third sealing ring；19: first annular seal space body import；20: the second sealing rings；21:
Gas source inlet；22: the first sealing rings；23: pressure regulation block；24: linear bearing.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, present embodiments provide for a kind of airtight pressure maintaining test equipment, airtight pressure maintaining test equipment includes the
One seal cavity 1 and the second seal cavity 3, wherein first annular seal space body 1 is connect with gas source, and for pressure maintaining and to second
Seal cavity 3 supplies, and the second seal cavity 3 is for placing tested device 9.
Between connecting line between first annular seal space body 1 and gas source and first annular seal space body 1 and the second seal cavity 3
Control device is provided on connecting line, the control device for ventilate, control of dying.
It further include the first pressure detection dress for being respectively used to pressure in detection first annular seal space body 1 and the second seal cavity 3
Set 7 and second pressure detection device 5.
The application by above structure can the air-tightness fast and accurately to tested device 9 detect, and have
Have that structure is simple, the low advantage of manufacturing cost and use cost.
The specific structure of above-mentioned control device are as follows: control device includes valve shaft and axis hole, and valve shaft and axis hole sliding connect
It connects, annular groove is provided on valve shaft.
It is the first valve shaft 16 and first shaft hole that the valve shaft between first annular seal space body 1 and gas source and axis hole, which is arranged in,
Valve shaft between first annular seal space body 1 and the second seal cavity 3 is set and axis hole is the second valve shaft 13 and the second axis hole.
It further include gas source inlet 21 and first annular seal space body import 19, when in dying under state, gas source inlet 21 and the
The annular groove of one valve shaft 16 is connected to, and first annular seal space body import 19 is closed by the first valve shaft 16, when in aeration status
Under, gas source inlet 21 and first annular seal space body import 19 are connected to annular groove and the two passes through annular groove and is connected to.
It further include first annular seal space body outlet 11 and the second seal cavity import, the second seal cavity import specifically include
First passage 10 in the second seal cavity 3 and the second channel 12 on first annular seal space body 1.When in shape of dying
Under state, first annular seal space body outlet 11 is connected to the annular groove of the second valve shaft 13, and the second of the second seal cavity import is logical
12 input end of road is sealed by the second valve shaft 13, under aeration status, the outlet 11 of first annular seal space body and the second seal chamber
12 input end of second channel of body import is connected to the annular groove of the second valve shaft 13 and the two is connected to by annular groove.
In order to increase the air-tightness of valve shaft, setting is the first sealing ring 22, the respectively there are three sealing ring on valve shaft
Two sealing rings 20 and third sealing ring 18, wherein the first sealing ring 22 and the second sealing ring 20 are separately positioned on annular groove
Both ends, third sealing ring 18 and the second sealing ring 20 interval are arranged and are located at the region in addition to annular groove.
When in dying under state, gas source inlet 21 is located at the first sealing ring 22 and the second sealing ring of the first valve shaft 16
Between 20, first annular seal space body import 11 is located between the second sealing ring 20 and third sealing ring 18 of the first valve shaft 16, when
Under aeration status, gas source inlet 21 and first annular seal space body import 11 are respectively positioned on the first sealing ring 22 of the first valve shaft 16
And second between sealing ring 20.
When in dying under state, first annular seal space body outlet 11 is located at the first sealing ring 22 and the of the second valve shaft 13
Between two sealing rings 20, the import of the second seal cavity 20 is located at the second sealing ring 20 and third sealing ring of the second valve shaft 13
Between 18, when in aeration status, 12 inlet end of second channel of first annular seal space body outlet 11 and the second seal cavity import
It is respectively positioned between the first sealing ring 22 of the second valve shaft 13 and the second sealing ring 20.
In the present embodiment, gas source inlet 21 and first annular seal space are realized by the reciprocating motion of the first valve shaft 16
Connection and disconnection between body import 19, first annular seal space body outlet 11 is realized by the reciprocating motion of the second valve shaft 13
And second seal cavity second channel 12 input end between connection and disconnection.Realize that the reciprocating motion of valve shaft is used
Specific structure are as follows: the both ends of valve shaft are connected separately with cylinder and spring, and the valve shaft is past under the action of cylinder and spring
Multiple movement.The cylinder and spring that 16 both ends of the first valve shaft are arranged in are respectively the first cylinder 8 and the first spring 17, and setting is the
The cylinder and spring at two valve shafts, 13 both ends are respectively the second cylinder 6 and second spring 14.
For the ease of the movement of valve shaft, the both ends of valve shaft are arranged with linear bearing 24, and valve shaft passes through linear bearing
24 are mounted in axis hole.
In order to be accurately controlled the air inflow of first annular seal space 1 and the second seal chamber 3, it is provided in first annular seal space body 1
Pressure regulation block 23, the quantity and/or volume-tunable of the pressure regulation block 23.Specifically, first annular seal space body 1 holds including first annular seal space body
Chamber 15, pressure regulation block 23 are arranged in first annular seal space body cavity 15.
It is close for the ease of opening and closing first annular seal space body 1 and the second seal cavity 3, first annular seal space body 1 and second
It is provided with opening on envelope cavity 3 and open end is provided with sealing cover body to be opened/closed, is arranged on first annular seal space body 1
Sealing cover body be the first sealing cover 2, it is the second sealing cover 4 that sealing cover body in the second seal cavity 3, which is arranged in,.
Above-mentioned pressure-detecting device is pressure sensor.
Airtight pressure maintaining test equipment further includes processing system, control device, first pressure detection device 7 and second pressure inspection
Device 5 is surveyed with processing system communication connection, processing system is according to first pressure detection device 7 and second pressure detection device 5
Detected value control control device operation, and then realize in first annular seal space body 1 and the second seal cavity 3 pressure carry out
It adjusts, and detection.
In order to which above-mentioned airtight pressure maintaining test equipment is further explained, present invention also provides above-mentioned airtight pressure maintainings
The specific course of work of test equipment.It is specific as described below:
The ventilation of first annular seal space body 1, control of dying: gas enters from gas source inlet 21, and gas source inlet 21 is located at this time
At the annular groove of first valve shaft 16, first annular seal space body import 19 is located at the second sealing ring 20 and of the first valve shaft 16
It is sealed between three sealing rings 18 by the first valve shaft 16, gas source inlet 21 is not connected to gas with first annular seal space body import 19 cannot
Into first annular seal space body 1.The cylinder being connected with the first valve shaft 16 drives the first valve shaft 16 mobile, makes 21 He of gas source inlet
First annular seal space body import 19 is respectively positioned at the annular groove of the first valve shaft 16, the two by annular groove be connected to, gas into
Enter in first annular seal space body 1.The pressure in first annular seal space body 1 is detected through the pressure-detecting device on first annular seal space body 1
After reaching setting pressure, the first valve shaft 16 is reset to initial position under the drive of cylinder and under the action of spring, enters
State of pressure keeping.
The ventilation of second seal cavity 3, control of dying, the ventilation of the second seal cavity 3, die control and first annular seal space
The ventilation of body 1, control process of dying with it is identical, be that first annular seal space body is realized by the reciprocating motion of the second valve shaft 13
Outlet 11 and the second connection or disconnection between seal cavity import.
The test mode of product, when the pressure in the second seal cavity 3 reaches setup pressure value, pressure maintaining for a period of time,
It is good airtight to determine that product has if the change value of pressure in the second seal cavity 3 is in the pressure change section of setting
Property, otherwise determine that the air-tightness of product is poor.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (8)
1. a kind of airtight pressure maintaining test equipment, which is characterized in that including first annular seal space body (1) and the second seal cavity (3),
In, the first annular seal space body (1) connect with gas source, and supplies for pressure maintaining and to the second seal cavity (3), described second
Seal cavity (3) is for placing tested device；
Connecting line and first annular seal space body (1) and the second seal cavity (3) between the first annular seal space body (1) and gas source
Between connecting line on be provided with control device, the control device for ventilate, control of dying；
It further include the first pressure detection dress for being respectively used to detection first annular seal space body (1) and the second seal cavity (3) interior pressure
Set (7) and second pressure detection device (5)；
The control device includes valve shaft and axis hole, and the valve shaft is slidably connected with axis hole, is provided on the valve shaft
Annular groove；
It is the first valve shaft (16) and first shaft hole that the valve shaft between first annular seal space body (1) and gas source and axis hole, which is arranged,
The valve shaft and axis hole being arranged between first annular seal space body (1) and the second seal cavity (3) are the second valve shaft (13) and the
Two axis holes；
Further include gas source inlet (21) and first annular seal space body import (19), when in dying under state, gas source inlet (21) with
The annular groove of first valve shaft (16) is connected to, and first annular seal space body import (19) is closed by the first valve shaft (16), when being in
Under aeration status, gas source inlet (21) and first annular seal space body import (19) are connected to annular groove and the two is recessed by annular
Slot connection；
Further include first annular seal space body outlet (11) and the second seal cavity import, dies under state when being in, first annular seal space
Body outlet (11) is connected to the annular groove of the second valve shaft (13), and the second seal cavity import is close by the second valve shaft (13)
Envelope, under the aeration status, first annular seal space body export (11) and the second seal cavity import with the second valve shaft (13)
Annular groove connection and the two by annular groove connection.
2. airtight pressure maintaining test equipment according to claim 1, which is characterized in that there are three close for setting on the valve shaft
Seal is the first sealing ring (22), the second sealing ring (20) and third sealing ring (18) respectively, wherein the first sealing ring (22)
The both ends of annular groove are separately positioned on the second sealing ring (20), third sealing ring (18) is set with the second sealing ring (20) interval
It sets and is located at the region in addition to annular groove；
When in dying under state, the gas source inlet (21) is located at the first sealing ring (22) and second of the first valve shaft (16)
Between sealing ring (20), the first annular seal space body import (19) is located at the second sealing ring (20) and of the first valve shaft (16)
Between three sealing rings (18), under aeration status, the gas source inlet (21) and the import of first annular seal space body (19) equal position
Between the first sealing ring (22) and the second sealing ring (20) of the first valve shaft (16)；
When in dying under state, the first annular seal space body outlet (11) is located at the first sealing ring of the second valve shaft (13)
(22) between the second sealing ring (20), the second seal cavity import is located at the second sealing ring of the second valve shaft (13)
(20) between third sealing ring (18), when being in aeration status, the first annular seal space body exports (11) and the second seal chamber
Body import is respectively positioned between the first sealing ring (22) of the second valve shaft (13) and the second sealing ring (20).
3. airtight pressure maintaining test equipment according to claim 1, which is characterized in that the both ends of the valve shaft are separately connected
There are cylinder and spring, which moves back and forth under the action of cylinder and spring.
4. airtight pressure maintaining test equipment according to claim 1, which is characterized in that the both ends of the valve shaft are arranged with directly
Spool is held (24), and the valve shaft is mounted in axis hole by linear bearing (24).
5. airtight pressure maintaining test equipment according to claim 1, which is characterized in that set in the first annular seal space body (1)
It is equipped with pressure regulation block (23), the quantity and/or volume-tunable of the pressure regulation block (23).
6. airtight pressure maintaining test equipment according to claim 1, which is characterized in that the first annular seal space body (1) and
It is provided in two seal cavities (3) and is open and open end is provided with sealing cover body to be opened/closed.
7. airtight pressure maintaining test equipment according to claim 1, which is characterized in that the pressure-detecting device is pressure biography
Sensor.
8. airtight pressure maintaining test equipment according to claim 1, which is characterized in that it further include processing system, the control
Device, first pressure detection device (7) and second pressure detection device (5) with processing system communication connection, the processing system
System controls the operation of control device according to the detected value of first pressure detection device (7) and second pressure detection device (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510999398.9A CN105444968B (en) | 2015-12-28 | 2015-12-28 | A kind of airtight pressure maintaining test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510999398.9A CN105444968B (en) | 2015-12-28 | 2015-12-28 | A kind of airtight pressure maintaining test equipment |
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| Publication Number | Publication Date |
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| CN105444968A CN105444968A (en) | 2016-03-30 |
| CN105444968B true CN105444968B (en) | 2019-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510999398.9A Active CN105444968B (en) | 2015-12-28 | 2015-12-28 | A kind of airtight pressure maintaining test equipment |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114544375A (en) * | 2022-03-07 | 2022-05-27 | 美思流体动力科技(哈尔滨)有限公司 | O-shaped ring hydrostatic test device for nuclear main pump |
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| CN105444968A (en) | 2016-03-30 |
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