CN217442778U

CN217442778U - Accurate check out test set of compressor cylinder body gas tightness

Info

Publication number: CN217442778U
Application number: CN202220933708.2U
Authority: CN
Inventors: 史桂林; 王常龙; 周浩; 李从旺; 夏燕国; 高文涛
Original assignee: Nanjing Aotecar New Energy Technology Co ltd; Ma'anshan Aotejia Technology Co ltd
Current assignee: Nanjing Aotecar New Energy Technology Co ltd; Ma'anshan Aotejia Technology Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-09-16
Anticipated expiration: 2032-04-21

Abstract

The utility model discloses an accurate check out test set of compressor cylinder body gas tightness, include the inside evacuation aerating device who fills the detection gas of compressor cylinder body after the combination to and detect the gaseous detection module that detects gas detection outside the compressor cylinder body under airtight environment. The detection work of vacuumizing the cylinder body and exhausting the detection gas in the cylinder body and the internal detection gas to the outside of the cylinder body is separately carried out, when the detection gas is exhausted, the subsequent cylinder body to be detected is vacuumized, and the detection gas is exhausted in the cylinder body, when the cylinder body is detected, N (>1) gas leakage time is passed, the gas leakage time of the detection gas is prolonged, the detection time during detection is shortened, and the condition that the gas can be leaked but the gas is not detected or captured by the detection point is avoided.

Description

Accurate check out test set of compressor cylinder body gas tightness

Technical Field

The utility model belongs to compressor leakproofness detection area, concretely relates to accurate check out test set of compressor cylinder body gas tightness.

Background

The cylinder body of the automobile compressor needs to be subjected to air tightness detection after machining and assembly, the air inlet and outlet of the assembled cylinder body needs to be connected with a vacuumizing inflation device through an air pipe in the traditional air tightness detection, wherein the air pipe needs to be made of special materials and structures, the price of the air pipe is high (more than 3000 yuan approximately), the air pipe needs to be bent, turned over and vacuumized in the using process, and then the air pipe needs to be replaced once regularly in 1-2 months. During detection, the time for vacuumizing and inflating the interior of the cylinder body is about 30-40s, and the time for vacuumizing and inflating during detection is about 30-40s, so that the whole detection time can be finished within 60-80s, the detection efficiency is low, the detection cost is high, and some cylinder bodies leak, but the detection gas is not moved to the detection point position and is detected or captured by the detection gas due to insufficient detection time.

Disclosure of Invention

In order to solve one of the above-mentioned technical problem, the inventor reachs through practice and summary the utility model discloses a technical scheme, the utility model discloses an accurate check out test set of compressor cylinder body gas tightness, include to the inside evacuation aerating device that fills the detection gas of compressor cylinder body after the combination to and detect the gaseous detection module that detects gas in the compressor cylinder body outside under airtight environment. Compare in traditional check out test set and carry out the evacuation in same machine inside, aerify, the detection achievement that the inside gas of detection cylinder body leaked, separately go on through with cylinder body evacuation and the detection achievement that the gas and inside detection gas leaked to the cylinder body outside in the cylinder body, when the detection gas leaked, the cylinder body that will follow-up needs to detect carries out cylinder body evacuation and the gas that fills in the cylinder body, when detecting this cylinder body, N gas leakage time has passed through, the time of leaking of detection gas has been improved, make the detection time of shortening detection time, avoid it to have the gas can leak but the gas condition emergence that is not detected or catches by the check point.

In the scheme of the application, the vacuumizing inflation device comprises a first rack on which a compressor cylinder positioning seat is installed, a vacuumizing device for exhausting air inside the compressor cylinder and a helium inflation device for inflating detection gas inside the compressor cylinder. The compressor cylinder body is positioned and installed through the compressor cylinder body positioning seat on the first rack, the air faucet installed on the cylinder body is connected through the air pipe, the traditional air pipe can be adopted by the air pipe, and the price is lower than that of a traditional detection device.

Make following improvement in this application scheme, gaseous detection module includes frame two, installs the drain pan in the frame two and is located the elevating system directly over the drain pan, installs evacuation structure and helium in the drain pan and detects the structure, and elevating system's terminal is installed and is pushed up the shell, and when elevating system drove the top shell and move down to setting for the position department, top shell and drain pan constitute airtight space, and evacuation structure was to airtight space inside outer air extraction to helium detection structure work behind the vacuum state this moment. The lifting mechanism selects the air cylinder, the top shell moves downwards through the lifting mechanism, so that a closed space is formed by the bottom shell, the closed space is pumped through the vacuumizing structure, a vacuum environment is formed inside the closed space, then, the helium detection structure is used for detecting leaked gas in the closed space, and if a helium signal is not found, the tightness of the compressor cylinder body is proved to reach the standard.

In the scheme of the application, the sealing groove is formed in one side, opposite to the top shell, of the bottom shell, and the sealing element is arranged on one side, opposite to the bottom shell, of the top shell. A closed space is formed by the top shell and the bottom shell through the sealing groove and the sealing piece, and the subsequent detection work of leaked gas is facilitated.

The following improvement is made in this application scheme, the vertical cross-section of seal groove sets up for the wave structure, realizes multichannel sealing ring structure through wave structure and sealing member, does benefit to the inclosed of assurance space.

In this application scheme make following improvement, the sealing member includes sealed body, and sealed body inboard is provided with the installation storehouse, installs a plurality of flexible bearing structure in the installation storehouse, enters into the inside back of seal groove when sealed body, along with elevating system drives the topshell and continues to move down, and flexible bearing structure expandes to be located the inside sealed body of seal groove and is full of the seal groove. Inside the sealing body drives the top shell to move downwards at the lifting mechanism so as to enter the sealing groove, the lifting mechanism continuously moves downwards for a certain distance, so that the flexible supporting structure inside the sealing body is arranged in a horizontal state, the sealing groove is hermetically filled, and a plurality of sealing ring structures are formed by combining the wave-shaped structure of the inner wall.

The following improvement is made in this application scheme, the outside of sealing body is provided with the elasticity polyurethane layer, utilizes elasticity polyurethane layer and wave structure formation multichannel sealing ring, does benefit to inside the entering of protection outside air when the evacuation.

Compared with the prior art, the utility model discloses can obtain following technological effect:

compared with the prior art, the technical scheme of the utility model, separately go on through the detection work who leaks to the cylinder body outside with the internal detection gas and the internal detection gas of filling of cylinder body evacuation and cylinder body, when the detection gas leaks, the cylinder body that will follow-up needs to detect carries out the internal detection gas that fills of cylinder body evacuation and cylinder body, when detecting this cylinder body, through N (>1) individual gas leakage time, the gaseous leakage time of detection has been improved, make to shorten the check-out time of examining time measuring, avoid it to have gaseous can leak but gaseous not by the check point detection or the condition that catches to take place.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a diagram of the working condition of the present invention during the inspection;

fig. 3 is a partial enlarged view of a portion a in fig. 2 according to the present invention;

fig. 4 is a structural diagram of the sealing member in a normal state in a position a in fig. 2 according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1 to 2, an accurate detection equipment for air tightness of a compressor cylinder comprises a first vacuum pumping and inflating device for filling detection gas into a combined compressor cylinder and a gas detection module for detecting gas outside the compressor cylinder in a closed environment, wherein the first vacuum pumping and inflating device comprises a rack 10 on which a compressor cylinder positioning seat 11 is installed, a first vacuum pumping device 13 for pumping gas into the compressor cylinder and a helium inflating device 12 for filling detection gas into the compressor cylinder, and the first vacuum pumping device 13 and the helium inflating device 12 are mature prior art and are mature products for an inventor to directly purchase. The vacuumizing device 13 and the helium gas charging device 12 are used for vacuumizing and charging helium gas into the vacuumizing device and the helium gas charging device successively, the helium gas leakage is detected, and whether the air tightness of the compressor cylinder body reaches the standard or not is judged by detecting whether the helium gas leakage exists or not.

The gas detection module comprises a second rack 20, a bottom shell 21 and a lifting mechanism 22 (cylinder) located right above the bottom shell 21 are installed on the second rack 20, a vacuumizing structure 23 and a helium detection structure 24 are installed in the bottom shell 21, the vacuumizing structure 23 and the helium detection structure 24 are mature prior art, mature products used for being directly purchased by an inventor are used, a top shell 25 is installed at the terminal of the lifting mechanism 22, a sealing groove 26 is formed in one side of the bottom shell 21, opposite to the top shell 25, a sealing piece 27 is arranged on one side of the top shell 25, opposite to the bottom shell 21, when the lifting mechanism 22 drives the top shell 25 to move downwards to a set position, a closed space is formed by the top shell 25 and the bottom shell 21, and the vacuumizing structure 23 is used for vacuumizing the inside of the closed space to work of the helium detection structure 24 in a vacuum state.

During the use, after the inside evacuation of compressor cylinder body and the helium gas that fills, arrange in line on the assembly line and wait for the detection, after waiting for N (>1) detection period, with inside bottom shell 21 its commentaries on classics, drive top shell 25 through elevating system 22 and move down and form a confined space through seal groove 26 and sealing member 27 with bottom shell 21, utilize evacuation structure 23 to the inside evacuation of confined space, and utilize helium gas detection structure 24 to carry out helium gas to the confined space inside and have or not to detect, if have then prove that compressor cylinder body gas tightness meets the requirements, if do not then prove that compressor cylinder body gas tightness meets the requirements.

Example 2:

as shown in fig. 3 to 4, the following modifications are made on the basis of the above-described embodiments: the vertical cross section of seal groove 26 sets up for wave structure, and sealing member 27 includes seal body 271, and the outside of seal body 271 is provided with the elasticity polyurethane layer, and seal body 271 inboard is provided with installation storehouse 272, installs a plurality of flexible bearing structure 273 in the installation storehouse 272, and after seal body 271 entered into seal groove 26 inside, along with elevating system 22 drives top shell 25 and continues to move down, flexible bearing structure 273 expandes to be located the inside seal body 271 of seal groove 26 and is full of seal groove 26.

When using, drive top shell 25 through elevating system 22 and move down, it is inside that sealing member 27 enters into seal groove 26, it moves down to continue along with elevating system 22 drives top shell 25, cause the sealing body 271 of the sealing member 27 that is located in seal groove 26 to expand to both sides, the flexible bearing structure 273 that is located in installation bin 272 simultaneously expands to horizontal stable state, make sealing member 27 that is located seal groove 26 closely laminate with the wave structure inner wall, when preventing evacuation and helium leakage detection, the air admission enclosure space in the space outside, influence the detection precision.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. 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.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an accurate check out test set of compressor cylinder body gas tightness which characterized in that, includes the inside evacuation aerating device who fills the detection gas of compressor cylinder body after the combination to and detect gaseous detection module that detects gas in the compressor cylinder body outside under airtight environment.

2. The apparatus for accurately detecting the airtightness of the compressor cylinder according to claim 1, wherein the vacuum pumping and inflating device comprises a first frame on which the compressor cylinder positioning seat is mounted, and a vacuum pumping device for pumping air inside the compressor cylinder and a helium gas inflating device for inflating the detection gas inside the compressor cylinder.

3. The accurate detection equipment of compressor cylinder body gas tightness according to claim 1, characterized in that, gaseous detection module includes frame two, installs the drain pan and is located the elevating system directly over the drain pan on the frame two, installs evacuation structure and helium detection structure in the drain pan, and the terminal of elevating system installs the top shell, and when elevating system drove the top shell and moves down to setting for the position department, top shell and drain pan constitute airtight space, and the helium detection structure work after this time evacuation structure was to the inside outer air pumping of airtight space to vacuum state.

4. The accurate detection equipment of compressor cylinder body gas tightness of claim 3, characterized in that, the one side of bottom shell relative top shell has seted up the seal groove, and the one side of top shell relative bottom shell is provided with the sealing member.

5. The accurate detection equipment for the gas tightness of the compressor cylinder according to claim 4, wherein the vertical cross section of the sealing groove is in a wave-shaped structure.

6. The accurate detection equipment of compressor cylinder body gas tightness of claim 5, characterized in that, the sealing member includes the seal body, and the seal body inboard is provided with the installation storehouse, installs a plurality of flexible supporting structures in the installation storehouse, and after the seal body entered into the seal groove, along with elevating system drives the top shell and continues to move down, the seal groove was filled with to flexible supporting structure expansion position seal body in the seal groove inside.

7. The accurate detection equipment of compressor cylinder body gas tightness according to claim 6, characterized in that the outside of said sealing body is provided with an elastic polyurethane layer.