CN217505585U

CN217505585U - Filter integrality testing arrangement

Info

Publication number: CN217505585U
Application number: CN202221454210.4U
Authority: CN
Inventors: 吕亮; 张磊
Original assignee: Beijing Bodehengxin Technology Co ltd
Current assignee: Beijing Bodehengxin Technology Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-09-27
Anticipated expiration: 2032-06-13

Abstract

The application discloses filter integrality testing arrangement, filter upstream department is equipped with pressure sensor, measuring device includes: the rack body is provided with an operating platform capable of sliding along the vertical direction, and rollers are arranged below the rack body; a compressor mounted on the console; the electromagnetic valve is electrically connected with the pressure sensor and comprises a first port and a second port, and the first port is communicated with the output end of the compressor; the flowmeter comprises a third port and a fourth port, the third port is communicated with the second port of the electromagnetic valve, and the fourth port is provided with a connecting assembly used for being connected with the filter in a sealing mode. And opening the electromagnetic valve, filling gas into the filter by the compressor, closing the electromagnetic valve when the pressure sensor reaches preset pressure, acquiring the molar quantity of the filled gas through the flow meter, and calculating the upstream volume of the measured filter according to the Krebron equation PV (NRT).

Description

Filter integrality testing arrangement

Technical Field

The disclosure relates to the field of filters, in particular to a filter integrity testing device.

Background

The existing filter integrity tester testing principle is basically based on the filter integrity test by controlling an electromagnetic valve to test the upstream volume of a filter, wherein the upstream volume is measured by communicating a tank inside an instrument with the filter. And after the upstream volume is tested, testing the pressure attenuation quantity delta P of the tested filter in one minute, and testing the lost gas volume, namely the diffusion flow in unit ml/min by using a Kerbelon equation to reflect the integrity of the filter.

However, the device can only measure the filter with a small volume, when the measured filter has a large volume, the measured filter is limited by the volume of the inner container of the instrument, the pressure in the filter is small, the measurement is difficult, the upstream volume measurement result is influenced, and the integrity of the filter cannot be accurately measured.

Disclosure of Invention

In view of the above-mentioned deficiencies or inadequacies in the prior art, it would be desirable to provide a filter integrity testing apparatus.

In a first aspect, a filter integrity testing device having a pressure sensor disposed upstream of a filter, the measuring device comprising:

the rack body is provided with an operating platform capable of sliding along the vertical direction, and rollers are arranged below the rack body;

a compressor mounted on the console;

the electromagnetic valve is electrically connected with the pressure sensor and comprises a first port and a second port, and the first port is communicated with the output end of the compressor;

the flowmeter comprises a third port and a fourth port, the third port is communicated with the second port of the electromagnetic valve, and the fourth port is provided with a connecting assembly used for being connected with the filter in a sealing mode.

According to the technical scheme provided by the embodiment of the application, the connecting assembly comprises a first connecting pipe and a second connecting pipe, wherein the first connecting pipe is installed at the inlet of the filter and communicated with the filter; the second connecting pipe can extend into the first connecting pipe and is detachably connected with the first connecting pipe.

According to the technical scheme that this application embodiment provided, be equipped with the spout on the first connecting pipe, the spout is close to filter one end extends there is the fixed slot, the second connecting pipe outside is equipped with the traveller, just the second connecting pipe outside is equipped with can follow its gliding latch segment of extending direction, the latch segment with be equipped with the space of prestoring between the traveller for with first connecting pipe clamp.

According to the technical scheme that this application embodiment provided, the fixed slot extending direction with between the spout extending direction and the opening is the acute angle towards the contained angle of second connecting pipe.

According to the technical scheme provided by the embodiment of the application, the shape of the fixing groove is matched with that of the sliding column.

According to the technical scheme that this application embodiment provided, be equipped with two sets of rotatory actuating levers of self axis of following on the support body, be equipped with two sets of screw holes on the operation panel, with actuating lever screw-thread fit.

According to the technical scheme that this application embodiment provided, be equipped with support column and pneumatic cylinder on the support body, the gliding installation of vertical direction can be followed to the support column gyro wheel one side, the pneumatic cylinder output with the support column is connected, is used for the drive the support column slides to offseting with ground.

The invention has the beneficial effects that: the application discloses filter integrality testing arrangement, the filter upper reaches are equipped with pressure sensor, be equipped with operation panel, gyro wheel, compressor, flowmeter and solenoid valve on the support body. The operation table is installed on the frame body in a sliding mode along the vertical direction, and the compressor is installed on the operation table; the electromagnetic valve is electrically connected with the pressure sensor and comprises a first port and a second port, and the first port is communicated with the output end of the compressor; the flowmeter comprises a third port and a fourth port, the third port is communicated with the second port of the electromagnetic valve, and the fourth port is provided with a connecting assembly.

When the upstream volume of the filter needs to be measured, firstly, the frame body is pushed through the roller according to the size and the placing position of the filter, the operation platform is adjusted to the corresponding position up and down, the electromagnetic valve is opened after the filter is connected with the filter in a sealing mode through the connecting assembly, the compressor charges gas into the filter, when the pressure sensor reaches preset pressure, the electromagnetic valve is closed, the molar quantity of the charged gas is obtained through the flowmeter, and the upstream volume of the measured filter is calculated according to the Krumber equation PV (NRT). And after the upstream volume is tested, testing the pressure attenuation quantity delta P of the tested filter for one minute, and testing the lost gas volume, namely the volume of the diffused flow in unit ml/min through a Kerbelon equation.

On one hand, the upstream volume measurement of the large-volume filter can be realized, and the accuracy of the measurement integrity is improved through the pressure sensor and the electromagnetic valve; on the other hand, can adapt to the filter of different size shapes, improve detection efficiency.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of an embodiment of a filter integrity testing apparatus of the present application;

FIG. 2 is a schematic view of a connection assembly of a filter integrity testing apparatus of the present application;

1. a frame body; 10. a roller; 11. a hydraulic cylinder; 12. a support pillar; 13. a fence; 2. an operation table; 20. a motor; 21. a drive rod; 3. a compressor; 4. a filter; 5. an electromagnetic valve; 6. a flow meter; 7. a connecting assembly; 71. a first connecting pipe; 710. a chute; 72. a second connecting pipe; 720. a traveler; 73. and a locking block.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

As shown in fig. 1, a filter integrity testing device, wherein a pressure sensor is provided upstream of a filter 4, the measuring device comprises: the device comprises a frame body 1, wherein an operating table 2 capable of sliding along the vertical direction is arranged on the frame body 1, and a roller 10 is arranged below the frame body 1; a compressor 3, wherein the compressor 3 is installed on the operation table 2; the electromagnetic valve 5 is electrically connected with the pressure sensor, the electromagnetic valve 5 comprises a first port and a second port, and the first port is communicated with the output end of the compressor 3; the flowmeter 6, the flowmeter 6 includes third port and fourth port, the third port with the second port of solenoid valve 5 is linked together, fourth port department be equipped with coupling assembling 7 be used for with filter 4 sealing connection.

In practical use, the pressure sensor is an air pressure sensor, the preset pressure is 1000mbar, calculation is facilitated, and the air pressure sensor is in wireless connection with the electromagnetic valve 5.

The working principle is as follows: when the upstream volume of the filter 4 needs to be measured, firstly, the frame body 1 is pushed through the roller 10 according to the size and the placing position of the filter 4, the operation platform 2 is adjusted up and down to a corresponding position, the electromagnetic valve 5 is opened after the connection assembly 7 is hermetically connected with the filter 4, the compressor 3 charges gas into the filter 4, when the pressure sensor reaches preset pressure, the electromagnetic valve 5 is closed, the molar quantity of the charged gas is obtained through the flow meter 6, and the upstream volume of the measured filter 4 is calculated according to the Krumber equation PV (NRT). After the upstream volume is measured, the pressure attenuation quantity delta P of the measured filter is measured for 4 minutes, and the lost gas volume is measured through the Kerbelon equation, namely the volume of the diffused flow in unit ml/min. On one hand, the upstream volume measurement of the large-volume filter 4 can be realized, and the accuracy of measuring the integrity of the filter is improved through the pressure sensor and the electromagnetic valve 5; on the other hand, the device can be adapted to filters 4 with different sizes and shapes, and the detection efficiency is improved.

Further, as shown in fig. 2, the connection assembly 7 includes a first connection pipe 71 and a second connection pipe 72, the first connection pipe 71 being installed at an inlet of the filter 4 and communicating with the filter 4; the second connection pipe 72 may extend into the first connection pipe 71 and be detachably connected to the first connection pipe 71.

Wherein, first connecting pipe 71 with filter 4 entry welding, perhaps with filter 4 integrated into one piece, still be equipped with the closing cap on the coupling assembling 7, the first connecting pipe 71 outside is equipped with the external screw thread, and when filter 4 was in the user state, the closing cap with first connecting pipe 71 passes through threaded connection, keeps filter 4 airtight.

Furthermore, a sliding groove 710 is formed in the first connecting pipe 71, a fixing groove extends from one end, close to the filter 4, of the sliding groove 710, a sliding column 720 is arranged on the outer side of the second connecting pipe 72, a locking block 73 capable of sliding along the extending direction of the second connecting pipe 72 is arranged on the outer side of the second connecting pipe 72, and a pre-storage space is formed between the locking block 73 and the sliding column 720 and used for clamping the first connecting pipe 71.

The sliding grooves 710 are spiral and symmetrically arranged along the axis of the first connecting pipe 71, and two sets of sliding columns 720 corresponding to the sliding grooves are arranged on the second connecting pipe 72. Specifically, the second connection pipe 72 is provided with threads on the outer side thereof, and the locking block 73 is threadedly assembled with the second connection pipe 72.

The working principle is as follows: the sliding column 720 of the second connecting pipe 72 is screwed into the sliding groove 710 until the sliding column 720 is located at the fixing groove, at this time, the locking block 73 slides towards the first connecting pipe 71 by rotating the locking block 73 until the locking block abuts against the end of the first connecting pipe 71, so that the quick connection is realized.

Preferably, an included angle between the extending direction of the fixing groove and the extending direction of the sliding groove 710 and an angle between the opening and the second connecting pipe 72 is an acute angle. And the shape of the fixing groove is matched with that of the sliding column 720. Is beneficial to the stable connection.

Further, be equipped with two sets of rotatory actuating levers 21 of self axis of following on the support body 1, be equipped with two sets of screw holes on the operation panel 2, with actuating lever 21 screw-thread fit.

Wherein, the driving rod 21 is rotatably connected with the frame body 1 through a bearing. Two groups of motors 20 corresponding to the two groups of driving rods 21 are arranged on the frame body 1, and the output ends of the motors 20 are connected with the driving rods 21. And the fence 13 is arranged on the frame body 1 to prevent the operator from falling.

The working principle is as follows: when the height of the operation table 2 needs to be adjusted, the motor 20 is started to drive the driving rod 21 to rotate along the axis of the motor, and the operation table 2 is driven to slide along the vertical direction through thread transmission and can be adapted to filters 4 with different sizes.

Further, be equipped with support column 12 and pneumatic cylinder 11 on the support body 1, support column 12 can be followed the gliding installation of vertical direction roller 10 one side, pneumatic cylinder 11 output with support column 12 is connected for the drive support column 12 slides to offseting with ground.

The working principle is as follows: when the frame body 1 is pushed to the optimal measurement position, the hydraulic cylinder 11 is started to drive the support column 12 to slide in the vertical direction, so that the support column 12 is abutted against the bottom surface, and the frame body 1 is fixed.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A filter integrity testing device provided with a pressure sensor upstream of a filter (4), characterized in that it comprises:

the device comprises a frame body (1), wherein an operating table (2) capable of sliding in the vertical direction is arranged on the frame body (1), and rollers (10) are arranged below the frame body (1);

a compressor (3), the compressor (3) being mounted on the console (2);

the electromagnetic valve (5) is electrically connected with the pressure sensor, the electromagnetic valve (5) comprises a first port and a second port, and the first port is communicated with the output end of the compressor (3);

flowmeter (6), flowmeter (6) include third port and fourth port, the third port with the second port of solenoid valve (5) is linked together, fourth port department be equipped with coupling assembling (7) be used for with filter (4) sealing connection.

2. A filter integrity testing device according to claim 1, wherein: the connection assembly (7) comprises a first connection pipe (71) and a second connection pipe (72), the first connection pipe (71) is installed at an inlet of the filter (4) and is communicated with the filter (4); the second connecting pipe (72) can extend into the first connecting pipe (71) and is detachably connected with the first connecting pipe (71).

3. A filter integrity testing device according to claim 2, wherein: be equipped with spout (710) on first connecting pipe (71), spout (710) are close to filter (4) one end extends there is the fixed slot, second connecting pipe (72) outside is equipped with traveller (720), just second connecting pipe (72) outside is equipped with can follow its extending direction gliding latch segment (73), latch segment (73) with be equipped with the space of prestoring between traveller (720) for press from both sides first connecting pipe (71).

4. A filter integrity testing device according to claim 3, wherein: the included angle between the extending direction of the fixing groove and the extending direction of the sliding groove (710) and the opening of the fixing groove faces the second connecting pipe (72) is an acute angle.

5. The filter integrity testing device of claim 4, wherein: the shape of the fixing groove is matched with that of the sliding column (720).

6. A filter integrity testing device according to claim 1, wherein: be equipped with two sets of actuating levers (21) that can follow self axis rotation on support body (1), be equipped with two sets of screw holes on operation panel (2), with actuating lever (21) screw-thread fit.

7. A filter integrity testing device, as claimed in claim 1, wherein: be equipped with support column (12) and pneumatic cylinder (11) on support body (1), gliding the installing in vertical direction can be followed in support column (12) gyro wheel (10) one side, pneumatic cylinder (11) output with support column (12) are connected for the drive support column (12) slide to offset with ground.