CN210051499U

CN210051499U - Air tightness testing device

Info

Publication number: CN210051499U
Application number: CN201920942949.1U
Authority: CN
Inventors: 韩玉文; 邓利芬; 吴迪; 王艳龙; 孙忠伟
Original assignee: Changchun Huasong Machinery Co Ltd
Current assignee: Changchun Huasong Machinery Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-02-11
Anticipated expiration: 2029-06-21

Abstract

The utility model discloses an air tightness verifying attachment, including box, standard work piece, the work piece and the booster mechanism that await measuring, standard work piece passes through the bolt fastening on one side inner wall of box, the work piece that awaits measuring passes through the bolt fastening on one side inner wall of box, and the work piece that awaits measuring is located standard work piece under, it has same communicating pipe to peg graft on one side outer wall that standard work piece and the work piece that awaits measuring are relative, and the intermediate position of communicating pipe one side outer wall has differential pressure sensor through the bolt fastening, the intermediate position of standard work piece one side outer wall is pegged graft and is had first connecting pipe, the intermediate position of work piece one side outer wall that awaits measuring is pegged. The utility model discloses standard work piece and the work piece that awaits measuring between the intercommunication, and the pipeline symmetry, the pressure of filling into gas is unified, and after pressure balance, two work pieces can get into the pressurize period, if the work piece that awaits measuring has the leakage, then differential pressure sensor's differential pressure value can rise, otherwise then can, and it is convenient to detect.

Description

Air tightness testing device

Technical Field

The utility model relates to a verifying attachment technical field especially relates to an air tightness verifying attachment.

Background

The airtightness detection is applied to the tight integrity evaluation of the internal container, and in most industries, in the process of manufacturing a workpiece, if the manufacturing is a sealed workpiece, a plurality of sealed workpiece samples are usually taken for airtightness detection, so that an airtightness detection device is required.

At present, the existing air tightness inspection device on the market mostly has the following defects in the using process: the air tightness detection has some defects, so that a detection result has certain errors and cannot be used as a quality reference standard of the tightness of the workpiece, so that the tightness of the workpiece cannot be determined to be good or bad.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an air tightness testing device.

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

the utility model provides an air tightness verifying attachment, includes box, standard work piece, workpiece and booster mechanism that awaits measuring, standard work piece passes through the bolt fastening on one side inner wall of box, workpiece that awaits measuring passes through the bolt fastening on one side inner wall of box, and workpiece that awaits measuring is located standard work piece under, it has same communicating pipe to peg graft on standard work piece and the relative one side outer wall of workpiece that awaits measuring, and the intermediate position of communicating pipe one side outer wall has differential pressure sensor through the bolt fastening, the intermediate position of standard work piece one side outer wall is pegged graft and is had first connecting pipe, the intermediate position of workpiece one side outer wall that awaits measuring is pegged graft and is had the.

Further, booster mechanism includes air pump and gas holder, and the gas holder passes through the bolt fastening on one side outer wall of box, and the welding has the fixed plate on one side outer wall of box, and the air pump passes through the bolt fastening on the top outer wall of fixed plate.

Further, it has the intake pipe to peg graft on the air inlet inner wall of air pump, and the one end of intake pipe is pegged graft on the bottom outer wall of gas holder, and it has the outlet duct to peg graft on the gas outlet inner wall of air pump, and the one end of first connecting pipe and second connecting pipe all passes the box and pegs graft on one side outer wall of outlet duct.

Further, the distance from the first connecting pipe to the air outlet pipe is the same as the distance from the second connecting pipe to the air outlet pipe.

Furthermore, a first pneumatic stop valve is fixed on the outer wall of one side of the first connecting pipe through a bolt, a second pneumatic stop valve is fixed on the outer wall of one side of the second connecting pipe through a bolt, and the second pneumatic stop valve is located under the first pneumatic stop valve.

Furthermore, a box door is hinged to the outer wall of one side of the box body.

Further, still include the inlet tube, the inlet tube is pegged graft in the position that one side outer wall of box is close to the bottom, and has infrared heating lamp through the bolt fastening on the one side inner wall that the inlet tube was kept away from to the box, and the position that one side outer wall of box is close to the bottom is pegged graft and is had the drain pipe.

The utility model has the advantages that:

1. through the communicating pipe and the differential pressure sensor that set up, because communicating pipe, the standard work piece with await measuring between the work piece communicate, and the pipeline symmetry, and fill gaseous pressure unified, after pressure balance, two work pieces can get into the pressurize period, if the work piece that awaits measuring has the leakage, then differential pressure sensor's differential pressure value can rise, otherwise then can not.

2. Through the air pump, the first pneumatic stop valve and the second pneumatic stop valve that set up, the air pump is used for inputing gas in to two work pieces, and the pneumatic stop valve forces sealed face not to leak when the valve is closed, makes things convenient for going on of follow-up test.

3. Through the inlet tube and the infrared heating lamp that set up, whether convenient simple test workpiece to be measured leaks, the box pours into water into, inserts the first connecting pipe of workpiece to be measured to aquatic, then the infrared heating lamp heating workpiece to be measured watches connecting pipe port department, and the gassing then explains not leaking.

Drawings

Fig. 1 is a schematic cross-sectional structural view of an embodiment 1 of an air-tightness testing device provided by the present invention;

fig. 2 is a schematic view of a partial simple three-dimensional structure of an embodiment 1 of an air-tightness testing device according to the present invention;

fig. 3 is a schematic cross-sectional structural view of an embodiment 2 of an air-tightness testing device according to the present invention.

In the figure: the device comprises a box body 1, a fixing plate 2, an air pump 3, an air inlet pipe 4, an air storage tank 5, a first pneumatic stop valve 7, a first connecting pipe 8, a standard workpiece 9, a communicating pipe 10, a differential pressure sensor 11, a workpiece to be detected 12, a second connecting pipe 13, a second pneumatic stop valve 14, a box door 15, a water inlet pipe 16, an infrared heating lamp 17 and a water outlet pipe 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

Example 1

Referring to fig. 1 and 2, an air tightness testing device, including box 1, standard workpiece 9, workpiece 12 and booster mechanism await measuring, standard workpiece 9 passes through the bolt fastening on one side inner wall of box 1, workpiece 12 awaits measuring passes through the bolt fastening on one side inner wall of box 1, and workpiece 12 awaits measuring is located standard workpiece 9 under, it has same communicating pipe 10 to peg graft on one side outer wall that standard workpiece 9 and workpiece 12 await measuring are relative, and the intermediate position of communicating pipe 10 one side outer wall passes through the bolt fastening and has differential pressure sensor 11, the intermediate position of standard workpiece 9 one side outer wall is pegged graft and is had first connecting pipe 8, the intermediate position of workpiece 12 one side outer wall that awaits measuring is pegged graft and is had second connecting pipe 13.

In the utility model, the pressurizing mechanism comprises an air pump 3 and an air storage tank 5, the air storage tank 5 is fixed on one side outer wall of a box body 1 through bolts, a fixing plate 2 is welded on one side outer wall of the box body 1, the air pump 3 is fixed on the top outer wall of the fixing plate 2 through bolts, an air inlet pipe 4 is inserted on the air inlet inner wall of the air pump 3, one end of the air inlet pipe 4 is inserted on the bottom outer wall of the air storage tank 5, an air outlet pipe is inserted on the air outlet inner wall of the air pump 3, one end of a first connecting pipe 8 and one end of a second connecting pipe 13 both pass through the box body 1 and are inserted on one side outer wall of the air outlet pipe, the distance from the first connecting pipe 8 to the air outlet pipe is the same as the distance from the second connecting pipe 13 to the air outlet pipe, a first pneumatic stop valve 7 is fixed on one side, second pneumatic stop valve 14 is located first pneumatic stop valve 7 under, it has chamber door 15 to articulate on one side outer wall of box 1, start air pump 3 with the even transport of the inside gas of gas holder 5 to standard work piece 9 and workpiece 12 that awaits measuring in, then close air pump 3, first pneumatic stop valve 7 and second pneumatic stop valve 14, if workpiece 12 that awaits measuring has the leakage, then differential pressure sensor 11's differential pressure value can rise, otherwise then can not, differential pressure sensor 11's model is QBM 4000.

The working principle is as follows: when the device is used, the device is externally connected with a power supply, after a workpiece 9 to be detected is fixed, the air pump 3 is started to uniformly convey gas in the air storage tank 5 into the first connecting pipe 8 and the second connecting pipe 13, so that the gas enters the standard workpiece 9 and the workpiece 12 to be detected, then the air pump 3, the first pneumatic stop valve 7 and the second pneumatic stop valve 14 are closed, then the communicating pipe 10 is opened, because the pipelines between the standard workpiece 9 and the workpiece 12 to be detected are symmetrical and the pressure of the charged gas is uniform, after the pressure is balanced, the two workpieces can enter a pressure maintaining period, if the workpiece 12 to be detected leaks, the pressure difference value of the pressure difference sensor 11 can rise, otherwise, whether the workpiece 12 to be detected leaks or not can be judged according to the change of the numerical value of the pressure difference sensor 11, and the conclusion that the gas.

Example 2

Referring to fig. 3, in this embodiment, compared with embodiment 1, the air tightness testing device further includes a water inlet pipe 16, the water inlet pipe 16 is inserted into a position on an outer wall of one side of the box body 1 close to the bottom, an infrared heating lamp 17 is fixed on an inner wall of one side of the box body 1 far away from the water inlet pipe 16 through a bolt, and a drain pipe 18 is inserted into a position on an outer wall of one side of the box body 1 close to the bottom.

The working principle is as follows: when the device is used, a proper amount of clear water is poured into the box body 1 through the water inlet pipe 16, then the workpiece 12 to be detected is taken down, the second connecting pipe 13 of the workpiece is inserted into liquid, then the red pill heating pipe 17 is started to heat the workpiece 12 to be detected, and then whether bubbles are emitted at the pipe end of the second connecting pipe 13 is observed, if the bubbles are emitted, the airtightness of the workpiece 12 to be detected is good, otherwise, the airtightness is not good.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an air tightness verifying attachment, includes box (1), standard workpiece (9), workpiece (12) and booster mechanism that awaits measuring, its characterized in that, standard workpiece (9) fixed connection is on one side inner wall of box (1), workpiece (12) that awaits measuring passes through the bolt fastening on one side inner wall of box (1), and workpiece (12) that awaits measuring is located standard workpiece (9) under, it has same communicating pipe (10) to peg graft on one side outer wall that standard workpiece (9) and workpiece (12) that await measuring are relative, and the intermediate position of communicating pipe (10) one side outer wall has differential pressure sensor (11) through the bolt fastening, the intermediate position of standard workpiece (9) one side outer wall is pegged graft and is had first connecting pipe (8), the intermediate position of workpiece (12) one side outer wall that awaits measuring is pegged graft and is had second connecting pipe (13).

2. The airtightness inspection apparatus according to claim 1, wherein the pressurization mechanism includes an air pump (3) and an air storage tank (5), the air storage tank (5) is fixed to an outer wall of one side of the box body (1) by bolts, the fixing plate (2) is welded to the outer wall of one side of the box body (1), and the air pump (3) is fixed to an outer wall of a top portion of the fixing plate (2) by bolts.

3. The airtightness testing device according to claim 2, wherein an air inlet pipe (4) is inserted into an inner wall of an air inlet of the air pump (3), one end of the air inlet pipe (4) is inserted into an outer wall of the bottom of the air storage tank (5), an air outlet pipe is inserted into an inner wall of an air outlet of the air pump (3), and one ends of the first connecting pipe (8) and the second connecting pipe (13) penetrate through the box body (1) and are inserted into an outer wall of one side of the air outlet pipe.

4. A tightness testing device according to claim 3, characterized in that said first connection pipe (8) is at the same distance from the outlet duct as said second connection pipe (13).

5. An airtightness testing apparatus according to any one of claims 1 to 4, wherein a first pneumatic stop valve (7) is fixed to an outer wall of one side of the first connecting pipe (8) by means of a bolt, and a second pneumatic stop valve (14) is fixed to an outer wall of one side of the second connecting pipe (13) by means of a bolt, the second pneumatic stop valve (14) being located directly below the first pneumatic stop valve (7).

6. The tightness testing device according to claim 1, characterized in that a door (15) is hinged to one outer wall of said case (1).

7. The airtightness testing device according to claim 1, further comprising a water inlet pipe (16), wherein the water inlet pipe (16) is inserted into a position on the outer wall of one side of the box body (1) close to the bottom, an infrared heating lamp (17) is fixed on the inner wall of one side of the box body (1) far away from the water inlet pipe (16) through a bolt, and a drain pipe (18) is inserted into a position on the outer wall of one side of the box body (1) close to the bottom.