CN105628310A - Sealing performance testing device and method - Google Patents

Sealing performance testing device and method Download PDF

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Publication number
CN105628310A
CN105628310A CN201610089168.3A CN201610089168A CN105628310A CN 105628310 A CN105628310 A CN 105628310A CN 201610089168 A CN201610089168 A CN 201610089168A CN 105628310 A CN105628310 A CN 105628310A
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CN
China
Prior art keywords
sealing
putting groove
article putting
cover
air pressure
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Granted
Application number
CN201610089168.3A
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Chinese (zh)
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CN105628310B (en
Inventor
覃斌
王林
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EVA Precision Industrial Holdings Ltd
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EVA Precision Industrial Holdings Ltd
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Priority to CN201610089168.3A priority Critical patent/CN105628310B/en
Publication of CN105628310A publication Critical patent/CN105628310A/en
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Publication of CN105628310B publication Critical patent/CN105628310B/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 discloses a sealing performance testing device and method, and the device comprises a machine platform which is provided with an object placement groove. A sealing upper cover which is used for closing the object placement groove is disposed above the object placement groove. The device also comprises a sealing assembly which is disposed in the object placement groove, and comprises a sealing ring and a drive cylinder in transmission connection with the sealing ring; a positioning assembly which is disposed in the object placement groove, and comprises a support with a stepped surface; a vacuum pumping apparatus which is disposed in the object placement groove and is used for the vacuum pumping of a sealed cavity formed by the object placement groove and the sealing upper cover; and a detection assembly which is disposed in the object placement groove and comprises a first air pressure inductor, wherein the first air pressure inductor is used for detecting the air pressure value of the sealed cavity formed by the object placement groove and the sealing upper cover. According to the invention, the device is simple in structure and is low in cost. The method is high in safety factor, is good in testing efficiency, and is high in testing precision.

Description

Tightness measuring device and method of testing
Technical field
The present invention relates to a kind of machinery tool, be specifically related to a kind of tightness measuring device and method of testing.
Background technology
Before product export, need product is carried out a series of test, wherein for products such as some valve class, tubings, performing leak test is even more important, and existing tightness measuring device structure is complicated, is not easy to operator's operation, and existing performing leak test detects frequently with the mode in the cavity insufflation gas closed, if it is excessive that its gas is filled with, it may occur that explosion, there is certain potential safety hazard.
Therefore one simple in construction, cost is low, and safety coefficient is high, and tightness measuring device and method of testing that degree of accuracy is high urgently propose.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention proposes a kind of tightness measuring device and method of testing, and this test apparatus structure is simple, and cost is low, and this method of testing safety coefficient is high, and testing efficiency is good, and measuring accuracy is high.
In order to achieve the above object, technical scheme is as follows:
Tightness measuring device includes: board, is provided with article putting groove on board, being arranged over and the sealing upper cover for closing article putting groove at article putting groove; Black box, is arranged in article putting groove, including: sealing ring and the driving cylinder being in transmission connection with sealing ring; Positioning component, is arranged in article putting groove, including: it is provided with the bracing frame of step surface; Vacuum extractor, is arranged in article putting groove, for article putting groove and the sealing cavity sealing upper cover formation are carried out evacuation; Detection components, is arranged in article putting groove, including: the first air pressure induction apparatus, the first pressure induction apparatus atmospheric pressure value sealing cavity for detecting article putting groove with seal upper cover formation.
One tightness measuring device simple in construction of the present invention, is arranged on the bracing frame of article putting groove by product, and article putting groove closes with sealing upper cover, form the cavity sealed, drive the motion of air cylinder driven sealing ring, product opening part is sealed, make interiors of products form the cavity sealed. Utilize vacuum extractor that article putting groove and the sealing cavity sealing upper cover formation are carried out evacuation, and the atmospheric pressure value in this annular seal space body is detected by the first air pressure induction apparatus, it is judged that whether it is within the scope of standard pressure value. Thus, the sealing property of product is detected.
Tightness measuring device of the present invention without being inflated, reduces potential safety hazard in the process of test, and meanwhile, present configuration is simple, simple operation, and detection efficiency is high, and precision is high.
On the basis of technique scheme, also can do following improvement:
As preferred scheme, being provided with guide pillar on board, seal upper cover and be slidably connected with guide pillar, seal upper cover and be in transmission connection with lift cylinder, lift cylinder driving seals upper cover and lifts along guide pillar.
Adopt above-mentioned preferred scheme, seal upper cover better with the sealing effectiveness of article putting groove.
As preferred scheme, being provided with multiple protective plate on board, multiple protective plates form working region, and article putting groove, guide pillar, sealing upper cover are arranged in working region.
Adopt above-mentioned preferred scheme, improve the safety coefficient that device is overall.
As preferred scheme, board table top is provided with the grating induction installation for inductive operation personnel.
Adopt above-mentioned preferred scheme, improve the safety coefficient that device is overall.
As preferred scheme, positioning component also includes: being arranged at the slide rail of article putting groove bottom surface, the slide block being arranged on slide rail and the mobile cylinder being in transmission connection with slide block, bracing frame is arranged on slide block.
Adopt above-mentioned preferred scheme, it is adaptable to the product of different length is supported.
As preferred scheme, sealing ring is connected with driving cylinder-driven by contiguous block.
Adopt above-mentioned preferred scheme, simple in construction.
As preferred scheme, detection components also includes: for detecting the second air pressure induction apparatus of atmospheric pressure value near sealing ring, contiguous block is provided with the connecting rod being slidably connected with it, second air pressure induction apparatus is arranged in connecting rod, connecting rod and driving device are in transmission connection, and driving device drives connecting rod to slide along the circumferential of sealing ring.
Adopt above-mentioned preferred scheme, the atmospheric pressure value outside sealing ring is detected, it is prevented that the atmospheric pressure value changing value sealing cavity that article putting groove and sealing upper cover are formed is owing to existing gap between sealing ring and product opening part, detection is more accurate, and error rate is less.
Method for testing tightness, utilizes tightness measuring device to carry out performing leak test, specifically includes following steps:
Article putting groove and the sealing cavity sealing upper cover formation are repeatedly carried out evacuation by S1 vacuum extractor, and it is M that the first air pressure induction apparatus detects the air pressure maximum of this sealing cavity1, air pressure minimum is M2;
Sealing upper cover is separated by S2 with article putting groove, is placed on the step surface of bracing frame by product;
S3 will seal upper cover and article putting groove Guan Bi, form closed cavity, drive the motion of air cylinder driven sealing ring, and the opening part of product is blocked by sealing ring, and what make product is internally formed closed cavity;
Article putting groove and the sealing cavity sealing upper cover formation are carried out evacuation by S4 vacuum extractor, keep certain time interval T;
It is M that S5 the first pressure induction apparatus detects the atmospheric pressure value of this sealing cavity0, it is judged that this atmospheric pressure value M0Whether at M1With M2Between, if not existing, product leaks air, if, products air tightness is good.
This method for testing tightness simple operation, testing efficiency is high, and accuracy rate is high.
Method for testing tightness, utilizes tightness measuring device to carry out performing leak test, specifically includes following steps:
Article putting groove and the sealing cavity sealing upper cover formation are repeatedly carried out evacuation by S1 vacuum extractor, and it is M that the first air pressure induction apparatus detects the air pressure maximum of this sealing cavity1, air pressure minimum is M2;
Sealing upper cover is separated by S2 with article putting groove, is placed on the step surface of bracing frame by product;
S3 will seal upper cover and article putting groove Guan Bi, form closed cavity, drive the motion of air cylinder driven sealing ring, and the opening part of product is blocked by sealing ring, and what make product is internally formed closed cavity;
Article putting groove and the sealing cavity sealing upper cover formation are carried out evacuation by S4 vacuum extractor, keep certain time interval T;
S5 driving device drives the second air pressure induction apparatus along the circumferential movement of sealing ring, and the second air pressure induction apparatus detects the atmospheric pressure value near sealing ring;
It is M that S6 the first pressure induction apparatus detects the atmospheric pressure value of this sealing cavity0, it is judged that this atmospheric pressure value M0Whether at M1With M2Between,
If not existing, and the atmospheric pressure value of the second air pressure induction apparatus detection does not change, then product leaks air,
If not existing, and the atmospheric pressure value of the second air pressure induction apparatus detection is changing, then the sealing situation of product needs again to detect,
If, then products air tightness is good.
This method for testing tightness simple operation, testing efficiency is high, and accuracy rate is high, it is prevented that produce because there is gap between sealing ring and the opening part of product to measure by mistake.
Accompanying drawing explanation
The structural representation of the tightness measuring device that Fig. 1 provides for the embodiment of the present invention.
Partial structurtes schematic diagram in the article putting groove that Fig. 2 provides for the embodiment of the present invention.
The partial structurtes schematic diagram of the black box that Fig. 3 provides for the embodiment of the present invention.
Wherein: 1 board, 11 article putting grooves, 12 sealing upper covers, 13 guide pillars, 14 lift cylinders, 15 protective plates, 16 grating induction installations, 2 black boies, 21 sealing rings, 22 driving cylinder, 23 contiguous blocks, 24 connecting rods, 25 driving devices, 3 positioning components, 31 bracing frames, 4 vacuum extractors, 5 detection components, 51 first air pressure induction apparatuss, 52 second air pressure induction apparatuss.
Detailed description of the invention
The preferred embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
In order to reach the purpose of the present invention, in the some of them embodiment of tightness measuring device,
As illustrated in fig. 1 and 2, tightness measuring device includes: board 1, black box 2, positioning component 3, vacuum extractor 4, detection components 5.
Board 1, is provided with article putting groove 11 on board 1, being arranged over and the sealing upper cover 12 for closing article putting groove 11 at article putting groove 11. Being provided with guide pillar 13 on board 1, seal upper cover 12 and be slidably connected with guide pillar 13, seal upper cover 12 and be in transmission connection with lift cylinder 14 (not shown), lift cylinder 14 driving seals upper cover 12 and lifts along guide pillar 13. Being provided with three protective plates 15 on board 1, three protective plates 15 form working region, and article putting groove 11, guide pillar 12, sealing upper cover 12 are arranged in working region. Board 1 table top is provided with the grating induction installation 16 for inductive operation personnel.
Black box 2 includes sealing ring 21 and the driving cylinder 22 being in transmission connection with sealing ring 21. Sealing ring 21 is in transmission connection with driving cylinder 22 by contiguous block 23. Being provided with two groups of black boies being oppositely arranged in article putting groove 11, the sealing ring 21 of one group of black box is rounded, and the sealing ring 21 of another group black box is rectangular.
Positioning component 3 is arranged in article putting groove 11, including the bracing frame 31 being provided with step surface.
Vacuum extractor 4 is arranged in article putting groove 11, for article putting groove 11 and the sealing cavity sealing upper cover 12 formation are carried out evacuation.
Detection components 5 is arranged in article putting groove 11, including: the first air pressure induction apparatus 51 (not shown), the first pressure induction apparatus 51 atmospheric pressure value sealing cavity for detecting article putting groove 11 with seal upper cover 12 formation.
Method for testing tightness, utilizes tightness measuring device to carry out performing leak test, specifically includes following steps:
Article putting groove 11 and the sealing cavity sealing upper cover 12 formation are carried out evacuation more than 4 time by S1 vacuum extractor, and it is M that the first air pressure induction apparatus 51 detects the air pressure maximum of this sealing cavity1, air pressure minimum is M2;
Sealing upper cover 12 is separated by S2 with article putting groove 11, is placed in by product on the step surface of bracing frame 31;
Sealing upper cover 12 and article putting groove 11 are closed by S3, form closed cavity, drive cylinder 22 to drive sealing ring 21 to move, and the opening part of product is blocked by sealing ring 21, and what make product is internally formed closed cavity;
Article putting groove 11 and the sealing cavity sealing upper cover 12 formation are carried out evacuation by S4 vacuum extractor, keep certain time interval T;
The atmospheric pressure value that S5 the first pressure induction apparatus 51 detects this sealing cavity is M0, it is judged that this atmospheric pressure value M0Whether at M1With M2Between, if not existing, product leaks air, if, products air tightness is good.
This method for testing tightness simple operation, testing efficiency is high, and accuracy rate is high.
One tightness measuring device simple in construction of the present invention, product is arranged on the bracing frame 31 of article putting groove 11, article putting groove 11 closes with sealing upper cover 12, form the cavity sealed, cylinder 22 is driven to drive sealing ring 21 to move, product opening part is sealed, makes interiors of products form the cavity sealed. Utilize vacuum extractor 4 that article putting groove 11 and the sealing cavity sealing upper cover 12 formation are carried out evacuation, and the atmospheric pressure value in this annular seal space body is detected by the first air pressure induction apparatus 51, it is judged that whether it is within the scope of standard pressure value. Thus, the sealing property of product is detected.
Tightness measuring device of the present invention without being inflated, reduces potential safety hazard in the process of test, and meanwhile, present configuration is simple, simple operation, and detection efficiency is high, and precision is high.
In order to optimize the implementation result of the present invention further, in other embodiment, all the other feature technologies are identical, it is different in that, positioning component 3 also includes: being arranged at the slide rail of article putting groove 11 bottom surface, the slide block being arranged on slide rail and the mobile cylinder being in transmission connection with slide block, bracing frame 31 is arranged on slide block.
Adopt the scheme of above-described embodiment, it is adaptable to the product of different length is supported.
As shown in Figure 3, in order to optimize the implementation result of the present invention further, in other embodiment, all the other feature technologies are identical, it is different in that, detection components 5 also includes: for detecting the second air pressure induction apparatus 52 of atmospheric pressure value near sealing ring 21, contiguous block 23 is provided with the connecting rod 24 being slidably connected with it, second air pressure induction apparatus 52 is arranged in connecting rod 24, connecting rod 24 and driving device 25 (not shown) are in transmission connection, and driving device 25 drives connecting rod 24 to slide along the circumferential of sealing ring 21.
Method for testing tightness, utilizes tightness measuring device to carry out performing leak test, specifically includes following steps:
Article putting groove 11 and the sealing cavity sealing upper cover 12 formation are carried out evacuation more than 4 time by S1 vacuum extractor, and it is M that the first air pressure induction apparatus detects the air pressure maximum of this sealing cavity1, air pressure minimum is M2;
Sealing upper cover 12 is separated by S2 with article putting groove 11, is placed in by product on the step surface of bracing frame 31;
Sealing upper cover 12 and article putting groove 11 are closed by S3, form closed cavity, drive cylinder 22 to drive sealing ring 21 to move, and the opening part of product is blocked by sealing ring 21, and what make product is internally formed closed cavity;
Article putting groove 11 and the sealing cavity sealing upper cover 12 formation are carried out evacuation by S4 vacuum extractor, keep certain time interval T;
S5 driving device 25 drives the second air pressure induction apparatus 52 along the circumferential movement of sealing ring 21, and the second air pressure induction apparatus 52 detects the atmospheric pressure value near sealing ring 21;
The atmospheric pressure value that S6 the first pressure induction apparatus 51 detects this sealing cavity is M0, it is judged that this atmospheric pressure value M0Whether at M1With M2Between,
If not existing, and the atmospheric pressure value of the second air pressure induction apparatus 52 detection does not change, then product leaks air,
If not existing, and the atmospheric pressure value of the second air pressure induction apparatus 52 detection is changing, then the sealing situation of product needs again to detect,
If, then products air tightness is good.
This tightness measuring device and method simple operation, atmospheric pressure value outside sealing ring 21 is detected, prevent the atmospheric pressure value changing value sealing cavity that article putting groove 11 and sealing upper cover 12 are formed owing to there is gap between sealing ring 21 and product opening part, detect more accurate, error rate is less, and accuracy rate is high.
Novel preferred implementation, it is noted that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.

Claims (9)

1. tightness measuring device, it is characterised in that including:
Board, is provided with article putting groove on described board, being arranged over and the sealing upper cover for closing described article putting groove at described article putting groove;
Black box, is arranged in described article putting groove, including: sealing ring and the driving cylinder being in transmission connection with described sealing ring;
Positioning component, is arranged in described article putting groove, including: it is provided with the bracing frame of step surface;
Vacuum extractor, is arranged in described article putting groove, carries out evacuation for the sealing cavity that described article putting groove and described sealing upper cover are formed;
Detection components, is arranged in described article putting groove, including: the first air pressure induction apparatus, described first pressure induction apparatus is for detecting the atmospheric pressure value sealing cavity that described article putting groove and described sealing upper cover are formed.
2. tightness measuring device according to claim 1, it is characterized in that, being provided with guide pillar on described board, described sealing upper cover and described guide pillar are slidably connected, described sealing upper cover and lift cylinder are in transmission connection, and described lift cylinder drives described sealing upper cover to lift along described guide pillar.
3. tightness measuring device according to claim 1, it is characterised in that be provided with multiple protective plate on described board, multiple described protective plates form working region, and described article putting groove, described guide pillar, described sealing upper cover are arranged in described working region.
4. tightness measuring device according to claim 1, it is characterised in that be provided with the grating induction installation for inductive operation personnel on described board table top.
5. tightness measuring device according to claim 1, it is characterized in that, described positioning component also includes: being arranged at the slide rail of described article putting groove bottom surface, the slide block being arranged on described slide rail and the mobile cylinder being in transmission connection with described slide block, support frame as described above is arranged on described slide block.
6. the tightness measuring device according to any one of claim 1-5, it is characterised in that described sealing ring is connected with described driving cylinder-driven by contiguous block.
7. sealing test device according to claim 6, it is characterized in that, described detection components also includes: for detecting the second air pressure induction apparatus of atmospheric pressure value near described sealing ring, described contiguous block is provided with the connecting rod being slidably connected with it, described second air pressure induction apparatus is arranged in described connecting rod, described connecting rod and driving device are in transmission connection, and described driving device drives connecting rod to slide along the circumferential of described sealing ring.
8. method for testing tightness, it is characterised in that utilize the tightness measuring device described in claim 6 to carry out performing leak test, specifically include following steps:
Article putting groove and the sealing cavity sealing upper cover formation are repeatedly carried out evacuation by S1 vacuum extractor, and it is M that the first air pressure induction apparatus detects the air pressure maximum of this sealing cavity1, air pressure minimum is M2;
Sealing upper cover is separated by S2 with article putting groove, is placed on the step surface of bracing frame by product;
S3 will seal upper cover and article putting groove Guan Bi, form closed cavity, drive the motion of air cylinder driven sealing ring, and the opening part of product is blocked by sealing ring, and what make product is internally formed closed cavity;
Article putting groove and the sealing cavity sealing upper cover formation are carried out evacuation by S4 vacuum extractor, keep certain time interval T;
It is M that S5 the first pressure induction apparatus detects the atmospheric pressure value of this sealing cavity0, it is judged that this atmospheric pressure value M0Whether at M1With M2Between, if not existing, product leaks air, if, products air tightness is good.
9. method for testing tightness, it is characterised in that utilize the tightness measuring device described in claim 7 to carry out performing leak test, specifically include following steps:
Article putting groove and the sealing cavity sealing upper cover formation are repeatedly carried out evacuation by S1 vacuum extractor, and it is M that the first air pressure induction apparatus detects the air pressure maximum of this sealing cavity1, air pressure minimum is M2;
Sealing upper cover is separated by S2 with article putting groove, is placed on the step surface of bracing frame by product;
S3 will seal upper cover and article putting groove Guan Bi, form closed cavity, drive the motion of air cylinder driven sealing ring, and the opening part of product is blocked by sealing ring, and what make product is internally formed closed cavity;
Article putting groove and the sealing cavity sealing upper cover formation are carried out evacuation by S4 vacuum extractor, keep certain time interval T;
S5 driving device drives the second air pressure induction apparatus along the circumferential movement of sealing ring, and the second air pressure induction apparatus detects the atmospheric pressure value near sealing ring;
It is M that S6 the first pressure induction apparatus detects the atmospheric pressure value of this sealing cavity0, it is judged that this atmospheric pressure value M0Whether at M1With M2Between,
If not existing, and the atmospheric pressure value of the second air pressure induction apparatus detection does not change, then product leaks air,
If not existing, and the atmospheric pressure value of the second air pressure induction apparatus detection is changing, then the sealing situation of product needs again to detect,
If, then products air tightness is good.
CN201610089168.3A 2016-02-17 2016-02-17 Tightness measuring device and test method Active CN105628310B (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107389279A (en) * 2017-08-29 2017-11-24 颍上县金晨阳工贸有限公司 A kind of basketball inflator with gas leakage detection function
CN107702870A (en) * 2017-11-07 2018-02-16 苏州富强科技有限公司 A kind of method for conducting leak test of sealing structure

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CN1707235A (en) * 2004-06-04 2005-12-14 精碟科技股份有限公司 Gas leakage detector
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CN203224338U (en) * 2013-04-28 2013-10-02 上海聚东新能源科技有限公司 Apparatus for detecting seal performance of weldment
CN203287167U (en) * 2013-05-16 2013-11-13 浙江银轮机械股份有限公司 Dry test equipment for sealing performance of oil cooler
CN104697714A (en) * 2015-02-13 2015-06-10 金华市志能科技有限公司 Vacuum leakage detecting and opening sealing device and method
CN205607613U (en) * 2016-02-17 2016-09-28 亿和精密工业(苏州)有限公司 Tightness test device

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Publication number Priority date Publication date Assignee Title
EP0674166A2 (en) * 1994-03-21 1995-09-27 Messmann, Josef, Dipl.-Ing. Procedure and device for the leak testing of porous pipes
CN1707235A (en) * 2004-06-04 2005-12-14 精碟科技股份有限公司 Gas leakage detector
CN201051040Y (en) * 2007-01-31 2008-04-23 丹东热工仪表有限公司 Leakage detection device
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CN203224338U (en) * 2013-04-28 2013-10-02 上海聚东新能源科技有限公司 Apparatus for detecting seal performance of weldment
CN203287167U (en) * 2013-05-16 2013-11-13 浙江银轮机械股份有限公司 Dry test equipment for sealing performance of oil cooler
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107389279A (en) * 2017-08-29 2017-11-24 颍上县金晨阳工贸有限公司 A kind of basketball inflator with gas leakage detection function
CN107702870A (en) * 2017-11-07 2018-02-16 苏州富强科技有限公司 A kind of method for conducting leak test of sealing structure
WO2019090664A1 (en) * 2017-11-07 2019-05-16 苏州富强科技有限公司 Tightness testing method for sealing structure

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