Multi-station air tightness testing apparatus

Abstract

The utility model discloses a kind of multi-station air-tightness test equipment, including base, bottom plate, support column and top plate, bottom plate is fixed on base, bottom plate and top plate are fixed support by support column between, top plate is provided with hydraulic cylinder, hydraulic cylinder output end bottom passes through top plate fixed connection lower pressing plate, lower pressing plate is slidably connected with support column, along support column guiding lifting moves, bottom plate is installed with multiple test stations, lower support piece is installed on each test station, upper pressing piece is installed on lower pressing plate bottom corresponding each test station, lower support piece is base frame, slot is set in base frame and is used to cooperate to place gas meter shell, gas meter shell opening end outer edge is covered on the outer edge of the surface of base frame, upper pressing piece bottom corresponding the outer edge of the surface of base frame is provided with a circle of sealing ring, upper pressing piece bottom center is respectively installed with inflation pipe and pressure sensor, control valve is installed on inflation pipe.The utility model greatly improves air-tightness test efficiency and the stability of test.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas meter processing and manufacturing technical field, especially to a multi-station airtightness test equipment. BACKGROUND

[0002] As Figure 1 As shown in the figure, the existing gas meter shell 1 needs to be tested for airtightness during processing. The existing airtightness test is performed by manually assembling and sealing the open end of the gas meter shell with a sealing plate, then sealing other holes, connecting the inflation pipeline with a valve and a pressure gauge, inflating the specified test pressure, and then placing the gas meter shell in water for observation of whether there is air leakage.

[0003] However, this test method has many defects: 1. Slow detection efficiency: single test time is 3 minutes; 2. Poor consistency of manual assembly and sealing test, with leakage test error; 3. Unstable test pressure; 4. The product needs to be soaked in water for testing, increasing the cleaning process after testing is completed. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model designs a multi-station airtightness test equipment.

[0005] The utility model adopts the following technical scheme:

[0006] A multi-station airtightness test equipment, comprising a rack, the rack comprises a base, a bottom plate, support columns and a top plate, the bottom plate is fixed on the base, the bottom plate and the top plate are fixed and supported by the support columns distributed at the four corners, the top plate is provided with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a lower pressing plate through the top plate, the lower pressing plate is slidably connected with the support columns and moves up and down along the guide of the support columns, a plurality of test stations are installed on the bottom plate, a lower support is installed on each test station, an upper pressing piece is installed on the bottom of the lower pressing plate corresponding to each test station, the lower support is a base frame, a notch is provided in the base frame for placing the gas meter shell, the open end of the gas meter shell is covered on the outer edge of the surface of the base frame, a sealing ring is provided around the outer edge of the surface of the base frame at the bottom of the upper pressing piece, a gas inflation pipe and a pressure sensor are respectively installed at the center of the bottom of the upper pressing piece, and a control valve is installed on the gas inflation pipe.

[0007] As a preferred embodiment, three test stations are installed on the bottom plate.

[0008] As a preferred embodiment, a limiting column is installed on the bottom plate and the lower pressing plate to prevent overpressure of the lower pressing plate.

[0009] As a preferred embodiment, two synchronous lifting hydraulic cylinders are installed on the top plate, and the lower ends of the two hydraulic cylinders are respectively fixedly connected with the lower pressing plate.

[0010] As a preference, the inflation tube is connected to an external inflation device.

[0011] As a preference, the sealing ring is made of silica gel.

[0012] The utility model discloses a multi-station air tightness test equipment, is exclusively used for the air tightness test of gas meter shell, greatly promotes the air tightness test efficiency and the stability of test, reduces the cost of product test, reduces manual labor. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the existing gas meter shell.

[0014] Figure 2 It is a structural schematic view of the utility model.

[0015] Figure 3 It is Figure 2 It is a structural schematic view of A-A direction.

[0016] In the drawing: 1, gas meter shell, 2, base, 3, bottom plate, 4, support column, 5, top plate, 6, lower pressing plate, 7, upper pressing piece, 8, sealing ring, 9, lower support piece, 10, inflation tube, 11, hydraulic cylinder, 12, limit column. DETAILED DESCRIPTION

[0017] The technical scheme of the utility model will be further concretely described below by specific embodiments and in connection with the drawings:

[0018] Embodiment: as shown in Figure 2 And Figure 3 A multi-station air tightness test equipment, including frame, the frame includes base 2, bottom plate 3, support column 4 and top plate 5, bottom plate is fixed on the base, and the bottom plate and the top plate are fixed and supported through the support column distributed in four corners, and the top plate is provided with hydraulic cylinder 11, and the output end bottom of hydraulic cylinder is fixedly connected with lower pressing plate 6 through the top plate, and the lower pressing plate is slidably connected with the support column, and is guided and lifted along the support column, and the bottom plate is provided with three test stations, and each test station is provided with lower support piece 9, and the lower pressing plate bottom corresponds each test station and is provided with upper pressing piece 7, and the lower support piece is base frame, and the base frame is provided with notch for cooperating with the gas meter shell, and the gas meter shell opening end outer edge is covered on the base frame surface outer edge, and the upper pressing piece bottom corresponds the base frame surface outer edge and is provided with a circle sealing ring 8, and the upper pressing piece bottom center is respectively provided with inflation tube 10 and pressure sensor, and the inflation tube is provided with control valve.

[0019] Limiting posts 12 are installed on the bottom plate and the lower pressing plate correspondingly. Two synchronous lifting hydraulic cylinders are installed on the top plate, and the bottom parts of the two hydraulic cylinders are respectively fixedly connected with the lower pressing plate. The inflation pipe is connected to an external inflation device. The sealing ring is a silica gel sealing ring.

[0020] When the multi-station airtightness testing equipment is used, first, other hole positions of the gas meter shell are sealed, the gas meter shell is placed on the lower support of the three test stations, the open end of the gas meter shell is placed upward, then the hydraulic cylinder is started to drive the lower pressing plate to press down, the sealing ring seals the open end of the gas meter shell, at this time the gas meter shell has been sealed, then the control valve is started to inflate the gas meter shell, until the set inflation value displayed by the pressure sensor, then the inflation is closed and observed for a period of time, the pressure value displayed by the pressure sensor is unchanged, and the airtightness requirement is reached.

[0021] The above-described embodiments are only a preferred scheme of the present application, and do not limit the present application in any form, and other variants and modifications are possible without exceeding the technical scheme recorded in the claims.

Claims

1. A multi-station hermetic test apparatus comprising a frame, characterized in that, The rack comprises a base, a bottom plate, support columns and a top plate, the bottom plate is fixed on the base, the bottom plate and the top plate are fixed and supported through the support columns distributed at four corners, the top plate is provided with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a lower pressing plate through the top plate, the lower pressing plate is slidingly connected with the support columns and moves up and down along the guide of the support columns, a plurality of test stations are installed on the bottom plate, a lower support is installed on each test station, an upper pressing piece is installed on the bottom of the lower pressing plate corresponding to each test station, the lower support is a base frame, a notch is arranged in the base frame for matching the placement of a gas meter shell, the outer edge of the open end of the gas meter shell is covered on the outer edge of the surface of the base frame, a sealing ring is arranged on the bottom of the upper pressing piece corresponding to the outer edge of the surface of the base frame, an inflation pipe and a pressure sensor are respectively installed on the center of the bottom of the upper pressing piece, and a control valve is installed on the inflation pipe.

2. The multi-station hermetic test apparatus of claim 1, wherein, Three test stations are installed on the bottom plate.

3. The multi-station hermetic test apparatus of claim 1, wherein, Limiting columns are installed on the bottom plate and the lower pressing plate.

4. The multi-station hermetic test apparatus of claim 1, wherein, Two synchronous lifting hydraulic cylinders are installed on the top plate, and the lower ends of the two hydraulic cylinders are respectively fixedly connected with the lower pressing plate through the output ends.

5. The multi-station hermetic test apparatus of claim 1, wherein, The inflation pipe is connected to an external inflation device.

6. The multi-station hermetic test apparatus of claim 1, wherein, The sealing ring is a silica gel sealing ring.

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