CN213579979U - Large-volume quick and accurate inflation device - Google Patents

Abstract

The utility model is suitable for an airtight test field provides a quick accurate aerating device of big volume, including shutoff head, fixed block and inflatable casing, the shutoff head passes through the connecting piece and is connected with the fixed block, the fixed block passes through the bolt fastening to inflatable casing front end, be equipped with inflation joint and pressure sensor in the inflatable casing, the inflatable casing bottom is equipped with hollow handle downwards, hollow handle end is equipped with bellows joint, shutoff head, connecting piece, fixed block and inflatable casing communicate in order, and this device adopts high pressurized air source to aerify, is surveyed the actual pressure of container by pressure sensor monitoring, can the inflatable pressure value of accurate control, prevents that the excessive pressure from aerifing and causing the damage to being surveyed the product, is fit for the airtight test of big volume container, satisfies the production beat and weak point, the service environment that the test uniformity required height.

Description

Large-volume quick and accurate inflation device

Technical Field

The utility model belongs to airtight test field especially relates to a quick accurate aerating device of big volume.

Background

The air tightness test industry generally adopts a differential pressure sensor to carry out leakage measurement, the measurement process is generally divided into four processes of inflation, balance, measurement and exhaust, wherein the speed of the inflation process and the accuracy of the inflation pressure directly influence the speed beat and the test effect of a test station, a manual pressure regulating unit or an automatic pressure regulating unit is generally adopted to control the inflation pressure of a test container at the present stage, but because the container volume of a plurality of use occasions is large, the pipeline is long, the test pressure is low, the rapid inflation is difficult to realize, the time requirement of the production beat cannot be ensured, some solutions firstly adopt high-pressure inflation and then low-pressure inflation to improve the inflation speed, but the accuracy and the repeated test consistency of the inflation pressure are difficult to ensure.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, an object of the utility model is to provide a quick accurate aerating device of big volume aims at solving and is difficult to realize quick aerate in the current airtight test trade, can't guarantee the technical problem of the time requirement of production beat.

The utility model adopts the following technical scheme:

the large-volume quick and accurate inflation device comprises a plugging head, a fixed block and an inflation shell, wherein the plugging head is connected with the fixed block through a connecting piece, the fixed block is fixed to the front end of the inflation shell through a bolt, an inflation joint and a pressure sensor are arranged in the inflation shell, a hollow handle is arranged at the bottom of the inflation shell downwards, a corrugated pipe joint is arranged at the tail end of the hollow handle, and the plugging head, the connecting piece, the fixed block and the inflation shell are sequentially communicated.

Furthermore, a threaded section is arranged at the front end of the plugging head, and a sealing ring is arranged on the inner side of the threaded section.

Further, the connecting piece includes first connector and second connector, the head end of first connector stretches into in the shutoff head and through the bolt fastening, the end of first connector stretches into the head end of second connector, the end of second connector stretches into in the fixed block, and is equipped with fixation nut in the fixed block front end, the fixation nut periphery is equipped with prevents the rotor, prevent that the rotor is fixed to the fixed block front end.

Furthermore, a sealing ring is also arranged between the tail end of the fixing block and the front end of the inflatable shell.

Further, the connecting piece periphery is equipped with the protective sheath.

The utility model has the advantages that: the utility model provides a large-volume quick and accurate inflation device, which adopts a high-pressure air source to inflate, monitors the actual pressure of a tested container by a pressure sensor, can accurately control the inflated pressure value, prevents the tested product from being damaged by overpressure inflation, is suitable for the airtight test of the large-volume container, and meets the use environments with short production takt and high test consistency requirements, such as the oil tank system test of a fuel vehicle, the engine oil pipeline test, the battery pack test of a new energy vehicle, the cooling pipeline test and other application occasions; sealing rings are arranged between the fixed block and the inflatable shell and at the front end of the anti-blocking head, so that good sealing performance is guaranteed; the whole device has simple structure, can be freely disassembled, and is convenient for replacing and cleaning each part.

Drawings

FIG. 1 is an assembly view of a large volume rapid precision inflator provided in accordance with an embodiment of the present invention;

fig. 2 is an exploded view of a large-volume quick and accurate inflator according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and 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.

In order to explain the technical solution of the present invention, the following description is made by using specific examples.

Fig. 1 shows the structure of a large-volume quick and accurate inflator provided by an embodiment of the present invention, and only the parts related to the embodiment of the present invention are shown for convenience of description.

As shown in fig. 1 and 2, the quick accurate aerating device of big volume that this embodiment provided includes shutoff head 1, fixed block 2 and aerifys casing 3, shutoff head 1 passes through connecting piece 4 and is connected with fixed block 2, fixed block 2 passes through the bolt fastening to aerifing casing 3 front end, it is equipped with pneumatic connector 5 and pressure sensor 6 to aerify in the casing 3, it is equipped with hollow handle 7 downwards to aerify casing 3 bottom, hollow handle 7 end is equipped with bellows joint 8, shutoff head 1, connecting piece 4, fixed block 2 and aerify casing 3 and communicate in order.

Wherein, aerify casing 3 includes main casing 31 and protection casing 32, and the fixed block passes through the bolt fastening to main casing 31 front end, is equipped with in the main casing 31 and aerifys joint 5 and pressure sensor 6, and protection casing 32 passes through the bolt fastening to main casing 31. The protection casing is detachable construction, conveniently aerifys joint and pressure sensor's installation and dismantlement.

Specifically, the front end of the plugging head 1 is provided with a threaded section 9, and the inner side of the threaded section 9 is provided with a sealing ring. The thread section is beneficial to corresponding clamping of the blocking head, and the sealing ring is arranged on the inner side of the thread section, so that good sealing performance is guaranteed.

In this embodiment, the connecting piece 4 includes first connector 10 and second connector 11, the head end of first connector 10 stretches into in shutoff head 1 and through the bolt fastening, the end of first connector 10 stretches into the head end of second connector 11, the end of second connector 11 stretches into in fixed block 2, and is equipped with fixation nut 12 in 2 front ends of fixed block, fixation nut 12 periphery is equipped with prevents revolving fragment 13, prevent that revolving fragment 13 is fixed to 2 front ends of fixed block. First connector and second connector cooperation joint have guaranteed good leakproofness, and the terminal fixation nut of second connector is fixed through preventing changeing the piece, has avoided the nut not hard up, the condition of gas leakage.

And a sealing ring is also arranged between the tail end of the fixed block 2 and the front end of the inflatable shell 3, so that the sealing property of the device is further improved.

The periphery of the connecting piece 4 is provided with a protective sleeve 14, so that the connecting piece can be protected, and the connecting piece is prevented from being damaged in the using process of the device.

When the device is used, the inflation connector of the tested container is plugged through the plugging head, the inflation air source is introduced through the corrugated pipe joint, the pressure inside the inflation shell is monitored through the pressure sensor, the rapid and accurate inflation pressure control is realized, the inflation pressure can be prevented from being too high, and the tested product is protected from being damaged by overpressure.

In the airtight test process, test gas is output by the airtight tester and enters the tested container through the pipeline. Because gas has compressibility and flows in a pipeline with pressure loss, the gas pressure at the output end of the instrument end is inconsistent with the gas pressure at the test container end in the inflation process, so that the test pressure can reach the test pressure range only slowly during inflation, and the inflation pressure is inconsistent and poor in precision due to easy over-inflation during high-pressure inflation. The device arranges the pressure sensor in the inflatable plugging head of the tested container and is close to the end of the tested container, so that the acquired gas pressure value is the real-time pressure value inside the tested container, the inflatable pressure value can be accurately controlled through a proper software algorithm and an inflation control strategy, the repeated accuracy of the inflatable pressure can reach 3kPa +/-0.05 kPa, the rapid and accurate inflation process can be realized, and the requirements of the airtight testing industry on testing beat and testing accuracy are met.

To sum up, the utility model provides a large-volume quick and accurate inflation device, which adopts a high-pressure air source to inflate, monitors the actual pressure of a tested container by a pressure sensor, can accurately control the inflated pressure value, prevents the overpressure inflation from damaging the tested product, is suitable for the airtight test of the large-volume container, and meets the use environments with short production rhythm and high test consistency requirements, such as the oil tank system test of a fuel vehicle, the engine oil pipeline test, the battery pack test of a new energy vehicle, the cooling pipeline test and other application occasions; sealing rings are arranged between the fixed block and the inflatable shell and at the front end of the anti-blocking head, so that good sealing performance is guaranteed; the whole device has simple structure, can be freely disassembled, and is convenient for replacing and cleaning each part.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a quick accurate aerating device of big volume, its characterized in that, includes shutoff head, fixed block and aerifys the casing, the shutoff head passes through the connecting piece and is connected with the fixed block, the fixed block passes through the bolt fastening to aerifing the casing front end, be equipped with inflation joint and pressure sensor in the aerifing the casing, it is equipped with hollow handle downwards to aerify the casing bottom, the hollow handle end is equipped with bellows joint, shutoff head, connecting piece, fixed block and aerify the casing and communicate in order.

2. A large volume rapid and accurate inflation device according to claim 1, wherein the front end of the blocking head is provided with a threaded section, and a sealing ring is arranged inside the threaded section.

3. A large volume rapid and accurate inflation device as claimed in claim 2, wherein said connecting member comprises a first connector and a second connector, the head end of said first connector extends into the stopper head and is fixed by a bolt, the end of said first connector extends into the head end of said second connector, the end of said second connector extends into the fixing block, and a fixing nut is provided at the front end of the fixing block, said fixing nut is provided with an anti-rotation piece at its periphery, said anti-rotation piece is fixed to the front end of the fixing block.

4. A large volume rapid and accurate inflation device as claimed in claim 3, wherein a sealing ring is also provided between the end of the fixed block and the front end of the inflation housing.

5. A large volume rapid and accurate inflation device according to claim 4, wherein said connecting member is provided with a protective sheath on the periphery.

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