CN215115054U

CN215115054U - Device for testing surface performance of sealing coating in vacuum environment

Info

Publication number: CN215115054U
Application number: CN202121372025.6U
Authority: CN
Inventors: 任鹏霄; 刘峰; 王运争; 肖之润
Original assignee: Luoyang Lujun Electromechanical Technology Co ltd
Current assignee: Luoyang Lujun Electromechanical Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-10
Anticipated expiration: 2031-06-21

Abstract

The utility model discloses a surface performance testing device of a sealing coating in a vacuum environment, a tank body is respectively provided with an inflation inlet connected with an air pump and an exhaust outlet connected with a vacuum pump, the tank body is internally provided with an inflation tube, one end of the inflation tube is connected with the inflation inlet, the other end of the inflation tube is connected with an air bag with air permeability, the air bag opening of the air bag is provided with a detachable connecting piece, the air bag is detachably and hermetically connected with the inflation tube through the connecting piece, the connecting piece is provided with a pressure sensor for detecting the internal pressure of the air bag, the pressure sensor is in signal connection with a controller, and the controller is in control connection with the air pump; the utility model discloses not only can realize under vacuum environment, the sealing performance to sealing coating under the different internal and external pressure difference effect detects, but also can monitor sealing coating often and whether take place to leak, keeps sealing coating to be in all the time and carries out the sealing performance monitoring under the rated pressure.

Description

Device for testing surface performance of sealing coating in vacuum environment

Technical Field

The utility model relates to a sealing performance detects technical field, especially relates to a sealing coating surface performance testing arrangement under vacuum environment.

Background

At present, surface performance tests of sealing coatings are mostly carried out in an atmospheric environment at present, and external interference factors such as atmospheric pressure and gas density in the atmospheric environment are too many, which can cause a certain influence on the surface performance test result of the sealing coatings.

SUMMERY OF THE UTILITY MODEL

In order to overcome not enough in the background art, the utility model discloses a sealing coating surface performance testing arrangement under vacuum environment, the utility model discloses not only can realize under vacuum environment, the sealing performance of sealing coating under the effect of the internal and external pressure difference of difference to the difference detects, but also can monitor sealing coating often and whether take place to leak, keep sealing coating to be in all the time and carry out the sealing performance monitoring under the rated pressure, improved accuracy, high efficiency and the convenience that sealing coating's performance detected greatly.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a sealing coating surface performance testing arrangement under vacuum environment, which comprises an air pump, a controller, jar body and vacuum pump, jar body is equipped with the sealed lid that can open and shut, be equipped with the pump connection that is connected with the air pump on the jar body respectively and the extraction opening that is connected with the vacuum pump, the internal gas tube that is equipped with of jar, the one end of gas tube is connected with the pump connection, the other end of gas tube is connected with the gasbag that possesses the gas permeability, the gasbag mouth of gasbag is equipped with the detachable connecting piece, the gasbag passes through the connecting piece and can dismantle sealing connection with the gas tube, the connecting piece is equipped with the pressure sensors who is used for detecting gasbag internal pressure, pressure sensors and controller signal connection, controller and air pump control connection.

Further, the connecting piece comprises last ring body and lower ring body, goes up ring body upper portion and can dismantle sealing connection with the gas tube, goes up ring body lower part face and is equipped with the lower go-between with the internal footpath threaded connection of lower ring body, and the gasbag mouth of gasbag lies in down between the threaded connection face of go-between and lower ring body and realizes through the threaded connection of go-between and lower ring body down dismantling sealing connection with the connecting piece.

Furthermore, the outer edge of the lower surface of the upper ring body is provided with an inserting ring, and the outer edge of the upper surface of the lower ring body is provided with an annular slot matched with the inserting ring.

Furthermore, the upper part of the upper ring body is provided with an upper connecting ring which is in threaded sealing connection with the inflation tube.

Furthermore, a pressure sensor which is inserted into the inner cavity of the air bag is arranged in the inner diameter of the upper ring body.

Furthermore, a cross rod is arranged in the inner diameter of the upper ring body.

Furthermore, the lower part surface of the cross rod is provided with a limiting rod matched with the diameter of the air bag, and the lower end of the limiting rod is provided with a top plate of an arc structure.

Furthermore, a one-way valve is arranged in the inflation tube.

Further, the tank body is provided with a pressure vacuum gauge for detecting vacuum pressure in the tank body.

Further, the air bag is made of rubber or non-woven fabric with air permeability, wherein the rubber or the non-woven fabric is provided with a plurality of air holes.

Compared with the prior art, the beneficial effects of the utility model are that: the sealing coating is coated on the outer surface of an air bag with certain air permeability and is placed in a vacuumized tank body, the air bag is inflated by an air pump, the pressure in the air bag is monitored at all times, the sealing performance of the sealing coating is tested by monitoring the rise and fall of the internal pressure of the air bag under different vacuum pressures, or the sealing performance of the sealing coating is judged by observing the expansion of the sealing coating under different internal and external pressure differences of the air bag and the shape recovery condition after vacuum release;

the detachable sealing connection of the air bag and the inflation tube and the detachable sealing connection of the air bag and the connecting piece can be realized by utilizing the thread clamping sealing of the connecting piece, because the sealing coating needs to be coated on the surface of the air bag in the performance test process of the sealing coating, when other sealing coatings need to be tested, a new air bag needs to be replaced inevitably, and the arrangement of the connecting piece greatly facilitates the replacement and installation of the subsequent air bag;

the arrangement of the annular slot and the insert ring can realize secondary sealing and limiting of the air bag opening of the air bag, effectively improve the sealing performance between the connecting piece and the air bag and ensure that the air bag cannot be separated from the connecting piece in the inflating process;

the arrangement of the limiting rod and the top plate can limit the air bag, so that the air bag cannot shake left and right in the inflating process, the sealing performance between the air bag and the connecting piece is better ensured, and powerful support is provided for the performance detection of a subsequent sealing coating;

the utility model discloses not only can realize under vacuum environment, the sealing performance to sealing coating under the effect of the different internal and external pressure differences detects, but also can monitor sealing coating often and whether take place to leak, keeps sealing coating to be in all the time and carries out the sealing performance monitoring under the rated pressure, has improved accuracy, high efficiency and the convenience that sealing coating's performance detected greatly.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the structure of the connecting member of the present invention;

fig. 4 is a schematic view of the stop lever structure of the present invention.

In the figure: 1. an air pump; 2. an inflation inlet; 3. a controller; 4. a pressure vacuum gauge; 5. a sealing cover; 6. a tank body; 7. an air extraction opening; 8. a viewing port; 9. a vacuum pump; 10. an inflation tube; 11. a one-way valve; 12. a connecting member; 13. a pressure sensor; 14. an air bag; 15. a cross bar; 16. an upper connecting ring; 17. an upper ring body; 18. inserting a ring; 19. a lower connecting ring; 20. an annular slot; 21. a lower ring body; 22. an epitaxial port; 23. an air bag port; 24. a limiting rod; 25. a top plate.

Detailed Description

In the following description, the technical solutions of the present invention will be described with reference to the drawings in the embodiments of the present invention, it should be understood that, if there are the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., it only corresponds to the drawings of the present invention, and for convenience of description, it is not intended to indicate or imply that the indicated device or element must have a specific orientation.

Referring to fig. 1-3, the present invention provides a technical solution:

in the first embodiment, referring to fig. 1 and 2, a device for testing surface performance of a sealing coating in a vacuum environment comprises an air pump 1, a controller 3, a tank 6 and a vacuum pump 9, wherein the tank 6 is provided with a sealing cover 5 which can be opened and closed, the tank 6 is provided with an inflation port 2 connected with the air pump 1 and an exhaust port 7 connected with the vacuum pump 9, the tank 6 is provided with a vacuum pressure gauge 4 for detecting vacuum pressure in the tank 6, the tank 6 is provided with an inflation tube 10, one end of the inflation tube 10 is connected with the inflation port 2, the other end of the inflation tube 10 is connected with an air bag 14 with air permeability, in order to ensure that the air bag 14 can be effectively expanded in the tank 6 after being inflated, a space enough for expanding the air bag 14 is reserved between the other end of the inflation tube 10 and the inner wall of the tank 6, the air bag 10 is provided with a check valve 11 for avoiding backflow and pressure relief of the air bag 14, the air bag 14 can be made of rubber with a plurality of air holes or non-woven fabric with air permeability, as a preferred scheme, the air bag 14 is in a spherical structure after being inflated, an air bag opening 23 of the air bag 14 is provided with a detachable connecting piece 12, the air bag 14 is detachably and hermetically connected with the inflation tube 10 through the connecting piece 12, the connecting piece 12 is provided with a pressure sensor 13 for detecting the internal pressure of the air bag 14, the pressure sensor 13 is in signal connection with the controller 3, further, a self-contained power supply and a wireless signal transmission device in the pressure sensor 13 can be in signal connection with the controller 3 through wireless signals, or the air bag passes through the connecting piece 12 in a sealing way through a lead and is connected with the controller 3 through signals of the tank body 6, the controller 3 adopts the S7-200PLC series of Siemens as a control core, the controller 3 is connected with the air pump 1 in a control way, and the tank body 6 is provided with an observation port 8 which is convenient for observing the air bag 14;

before the sealing performance of the sealing coating is detected, the sealing coating is uniformly coated on the outer surface of an air bag 14 to ensure that the air bag 14 cannot ventilate, then the air bag 14 is connected to an inflation tube 10 in a sealing way through a connecting piece 12, when the sealing detection is carried out, a sealing cover 5 of a tank body 6 is closed, a vacuum pump 9 is started to vacuumize the interior of the tank body 6, a worker can clearly know the vacuum pressure in the tank body 6 by observing a pressure vacuum gauge 4, a controller 3 is started to control an air pump 1 to inflate the air bag 14 after the vacuumization, a pressure sensor 13 monitors the pressure in the air bag 14 at all times and transmits information to the controller 4 during the inflation process, when the pressure in the air bag 14 reaches a specified value, the controller 3 controls the air pump 1 to stop inflating, the pressure in the air bag 14 is kept by a one-way valve 11 in the inflation tube 10, when the sealing coating is leaked, and the pressure in the air bag 14 is insufficient, the controller 3 controls the air pump 1 to inflate the air bag 14, the pressure in the air bag 14 is always kept at a specified pressure value in the whole sealing performance detection process of the sealing coating, and the sealing performance of the sealing coating can be effectively calculated by obtaining data recorded in the controller 3 after the detection is finished.

In the second embodiment, referring to fig. 3, since the sealing coating needs to be applied on the surface of the airbag 14 during performance testing of the sealing coating, when a plurality of samples of the sealing coating need to be tested, a plurality of airbags 14 need to be prepared, in order to facilitate subsequent disassembly and replacement of the airbag 14, the connecting member 12 is composed of an upper ring 17 and a lower ring 21, the inner diameter of the upper ring 17 is provided with the pressure sensor 13 which protrudes into the inner cavity of the airbag 14, the upper portion of the upper ring 17 is provided with an upper connecting ring 16 which is in threaded sealing connection with the inflation tube 10, the lower portion of the upper ring 17 is provided with a lower connecting ring 19 which is in threaded connection with the inner diameter of the lower ring 21, when the connecting member 12 and the airbag 14 are installed, the airbag opening 23 of the airbag 14 is located at the inner diameter of the lower ring 21, the lower connecting ring 19 at the lower portion of the upper ring 17 is located at the inner diameter of the airbag opening 23, and the upper ring 17 is in threaded connection with the inner diameter of the lower ring 21 through the lower connecting ring 19 to realize threaded clamping and sealing of the airbag ring 23, furthermore, in order to facilitate the sealing connection of the air bag port 23, the air bag port 23 is provided with an outer edge port 22 extending outwards, the outer edge port 22 can be easily and effectively placed into the threaded connection surface between the lower connection ring 19 and the lower ring body 21 to realize the detachable sealing connection of the air bag 14 and the connection piece 12, and in order to enable the inflation tube 10 to perform efficient inflation and expansion on the air bag 14, the inner diameters of the upper connection ring 16, the upper ring body 17 and the lower connection ring 19 are the same and correspond to each other;

further, in order to avoid the problem that the airbag opening 23 or the outer edge opening 22 of the airbag 14 is excessively worn by the thread teeth in the process of the threaded connection between the lower connecting ring 19 and the lower ring body 21, so that the airbag 14 falls off accidentally in the inflation process, compared with the thread teeth and the thread grooves of the traditional conical structure, the thread grooves and the thread teeth which are matched between the lower connecting ring 19 and the lower ring body 21 are all of a rectangular structure, and the distance between the adjacent thread teeth or thread grooves is larger, so that the airbag opening 23 or the outer edge opening 22 of the airbag 14 can be sufficiently and hermetically connected between the threaded connection surfaces between the lower connecting ring 19 and the lower ring body 21, and the abrasion to the airbag opening 23 or the outer edge opening 22 of the airbag 14 is greatly reduced; in addition, after the air bag 14 is coated with the sealing coating for testing, when other sealing coating samples are tested, the air bag 14 needs to be replaced by a new air bag 14 for coating, so that the problem that the air bag opening 23 or the outer edge opening 22 is abraded due to the fact that the same air bag 14 is repeatedly clamped through thread sealing is avoided;

further, in order to enhance the sealing performance between the connecting member 12 and the outer edge 22 at the upper part of the airbag opening 23, the outer edge of the lower part of the upper ring 17 is provided with an insert ring 18, the outer edge of the upper part of the lower ring 21 is provided with an annular slot 20 matched with the insert ring 18, the outer edge 22 at the upper part of the airbag opening 23 penetrates out through a threaded connection surface between the lower connecting ring 19 and the lower ring 21 and then is tiled on the annular slot 20 at the upper part of the lower ring 21, and the insert ring 18 at the lower part of the upper ring 17 inserts and clamps the outer edge 22 into the annular slot 20 to realize secondary limit sealing on the outer edge 22; to facilitate the threaded connection of the upper ring 17 to the lower ring 21, the inner diameter of the upper connecting ring 16 is provided with a cross bar 15 that facilitates rotation of the upper ring 17.

In the third embodiment, referring to fig. 4, during the inflation of the airbag 14, if the inflation pressure is too high, the airbag 14 may shake, which may seriously affect the sealing performance of the sealing coating on the surface of the airbag 14 and the sealing connection between the airbag 14 and the connecting member 12, in order to keep the airbag 14 stable during the inflation, the lower surface of the cross bar 15 is provided with a limiting rod 24 which protrudes into the airbag 14 and is adapted to the diameter of the airbag 14, and the lower end of the limiting rod 24 is provided with a top plate 25 of an arc structure which abuts against the inner bottom surface of the airbag 14.

The details of the present invention not described in detail are prior art, and it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the scope of the claims.

Claims

1. The utility model provides a seal coating surface performance testing arrangement under vacuum environment, includes air pump (1), controller (3), jar body (6) and vacuum pump (9), its characterized in that: the tank body (6) is provided with a sealing cover (5) capable of being opened and closed, the tank body (6) is provided with an inflation inlet (2) connected with an air pump (1) and an air exhaust opening (7) connected with a vacuum pump (9) respectively, an inflation tube (10) is arranged in the tank body (6), one end of the inflation tube (10) is connected with the inflation inlet (2), the other end of the inflation tube (10) is connected with an air bag (14) with air permeability, the air bag opening (23) of the air bag (14) is detachably and hermetically connected with a connecting piece (12), the air bag (14) is detachably and hermetically connected with the inflation tube (10) through the connecting piece (12), the connecting piece (12) is provided with a pressure sensor (13) used for detecting the internal pressure of the air bag (14), the pressure sensor (13) is in signal connection with a controller (3), and the controller (3) is in control connection with the air pump (1).

2. The device for testing the surface performance of the sealing coating in the vacuum environment according to claim 1, wherein: the connecting piece (12) comprises an upper ring body (17) and a lower ring body (21), the upper part of the upper ring body (17) is detachably and hermetically connected with the inflation tube (10), the lower part surface of the upper ring body (17) is provided with a lower connecting ring (19) which is in threaded connection with the inner diameter of the lower ring body (21), and an air bag opening (23) of the air bag (14) is positioned between the threaded connection surfaces of the lower connecting ring (19) and the lower ring body (21) and is detachably and hermetically connected with the connecting piece (12) through the threaded connection of the lower connecting ring (19) and the lower ring body (21).

3. The device for testing the surface performance of the sealing coating in the vacuum environment according to claim 2, wherein: the outer edge of the lower part surface of the upper ring body (17) is provided with an insert ring (18), and the outer edge of the upper part surface of the lower ring body (21) is provided with an annular slot (20) matched with the insert ring (18).

4. The device for testing the surface performance of the sealing coating in the vacuum environment according to claim 2, wherein: the upper part of the upper ring body (17) is provided with an upper connecting ring (16) which is in threaded sealing connection with the inflation tube (10).

5. The device for testing the surface performance of the sealing coating in the vacuum environment according to claim 2, wherein: the inner diameter of the upper ring body (17) is provided with a pressure sensor (13) which extends into the inner cavity of the air bag (14).

6. The device for testing the surface performance of the sealing coating in the vacuum environment according to claim 2, wherein: the inner diameter of the upper ring body (17) is provided with a cross rod (15).

7. The device for testing the surface performance of the sealing coating in the vacuum environment according to claim 6, wherein: the lower part surface of the cross rod (15) is provided with a limiting rod (24) matched with the diameter of the air bag (14), and the lower end of the limiting rod (24) is provided with a top plate (25) with an arc structure.

8. The device for testing the surface performance of the sealing coating in the vacuum environment according to claim 1, wherein: a one-way valve (11) is arranged in the inflation tube (10).

9. The device for testing the surface performance of the sealing coating in the vacuum environment according to claim 1, wherein: the tank body (6) is provided with a pressure vacuum gauge (4) for detecting the vacuum pressure in the tank body (6).

10. The device for testing the surface performance of the sealing coating in the vacuum environment according to claim 1, wherein: the air bag (14) is made of rubber or non-woven fabric with air permeability and a plurality of air holes.