CN210426950U - Portable flow resistance testing arrangement - Google Patents
Portable flow resistance testing arrangement Download PDFInfo
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- CN210426950U CN210426950U CN201920477942.7U CN201920477942U CN210426950U CN 210426950 U CN210426950 U CN 210426950U CN 201920477942 U CN201920477942 U CN 201920477942U CN 210426950 U CN210426950 U CN 210426950U
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Abstract
The utility model discloses a portable flow resistance testing arrangement, include quick-witted case, the test section of thick bamboo that is connected through the trachea, quick-witted incasement be provided with divisionally: the air pressure device is connected with the test cylinder through two air pipes; and the control circuit is electrically connected with the air pressure device and is used for controlling the operation of the air pressure device. The utility model can accurately and rapidly test the flow resistance of the automotive upholstery, and the circuit structure is provided with a protection device, and the short circuit and the overload can trigger the protection device to prevent the equipment from being damaged; the utility model discloses the test flow resistance is more convenient, and is consuming time less, easy operation, only need simple training just can skillfully use. The utility model discloses compact structure, occupation space is little, and it is simple to maintain, and the trouble is less, and the test and the transfer of equipment are all very convenient.
Description
Technical Field
The utility model relates to an automotive interior material flow resistance testing arrangement technical field, in particular to portable flow resistance testing arrangement.
Background
The flow resistance is an important parameter of automotive interior materials, the flow resistance is tested quickly and accurately, the detection level of the quality of interior parts is improved, only some laboratories have the capability of testing the flow resistance at present, only part of sample parts can be tested, the quality inspection of a large number of products cannot be met, and a lot of interior factories lack the means of flow resistance quality inspection.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a portable flow resistance test equipment, the flow resistance value of the interior appearance of test that can be effective convenient, whether the test button of a test section of thick bamboo can detect the testing process and leak gas, reduces the error.
The utility model discloses a following technical scheme realizes:
a portable flow resistance testing device comprises a machine case and a testing cylinder which are connected through an air pipe,
the machine box is internally and divisionally provided with:
the air pressure device is connected with the test cylinder through two air pipes;
and the control circuit is electrically connected with the air pressure device and is used for controlling the operation of the air pressure device.
Further, the pneumatic device comprises:
the suction inlet of the air pump is sequentially connected with the filtering device and the flow switch through a pipeline, a pressure relief valve is further connected beside the pipeline between the filtering device and the flow switch, and the other end of the flow switch is connected with the air pipe;
the first pressure stabilizing device, the pressure difference tester and the second pressure stabilizing device of the other air pipe are connected in sequence through pipelines.
Further, the filtering device is a filter, and the first pressure stabilizing device and the second pressure stabilizing device are gas washing bottles.
Further, the control circuit comprises:
the power adapter supplies power to the whole case;
the two relays are respectively used for controlling the air pumping pump, the pressure release valve, the flow switch and the power supply of the differential pressure tester;
the manual switch is used for manually controlling the starting and stopping of the air extraction pump;
and the controller is in signal connection with the relay, the flow switch and the differential pressure tester through circuits respectively.
Further, the control circuit further comprises:
and the heat radiation fan is connected with the power adapter through a circuit and used for radiating heat for the air pressure device.
Further, the control circuit further comprises:
and the warning device is connected with the relay through a circuit and used for warning when the differential pressure tester measures that the differential pressure exceeds a certain value.
Furthermore, the test cartridge comprises an upper cover, a test cartridge shell and a semi-closed hole sealing material which are fixedly connected from top to bottom in sequence,
the upper cover is provided with a boss in a sealing manner in a central inner hole in an interference fit manner, and the upper end surface of the upper cover is provided with a handle;
the testing cylinder shell comprises an inner shell and an outer shell, an inner channel and an outer channel are formed, the inner channel is a testing channel, the outer channel is a channel for detecting air leakage, a flanging is arranged at the bottom of the outer shell, and the height of the inner shell is greater than that of the outer shell;
the test tube shell comprises an upper cover and is characterized in that a boss is hermetically arranged in the center of the upper cover in an interference fit manner, the upper cover is provided with two radial air holes, and the boss is respectively provided with two air holes for communicating the two radial air holes with two channels inside and outside the test tube shell.
Furthermore, the lug boss and the upper cover are also provided with communicating holes for communicating the inner channel and the outer channel of the test cylinder shell, the upper cover is provided with a stepped hole for connecting the communicating holes, and a detection button for controlling the on-off of the communicating holes is inserted into the stepped hole.
Further, the detection button include the column body, set up the spring of column body bottom, the periphery wall of the column body is equipped with two sealing rings that prevent gas leakage, is equipped with the hole of the interior outer passageway of a intercommunication test cartridge shell respectively along radial and axial, the lower extreme of spring is fixed on the ladder face of shoulder hole, when the detection button is not pressed, the detection button is sealed the intercommunicating pore, after the detection button is pressed, hole and intercommunicating pore on the detection button switch on, the intercommunication two inside and outside channels of test cartridge shell.
Further, the testing cylinder shell and the upper cover are fixedly connected through bolts or welding; the inner shell of the test cylinder shell is fixed on the inner wall of the outer shell through a plurality of positioning block adhesives or welding.
Compared with the prior art, the utility model discloses there is following advantage:
1. the utility model discloses the circuit and the pipeline that adopt, simple structure is multiple functional, can accurate test material flow resistance on the one hand to start overload protection when transshipping, the succinct trouble of on the other hand structure compactness is few.
2. The utility model discloses an overload protection can effectively protect equipment's safety, can trigger the control program on the controller when test sample pressure differential surpasss a definite value, realizes flow resistance appearance stop work and lets out the function of atmospheric pressure.
3. The test cylinder designed by the utility model is divided into the inner cylinder and the outer cylinder, the inner cylinder is longer than the outer cylinder, which ensures that the sealing performance of the inner cylinder is better than that of the outer cylinder; when the test is carried out, the test button is not pressed, only the inner cylinder plays a test role, the reading is read, the outer cylinder and the inner cylinder are communicated with the outer cylinder after the test button is pressed, if the air pressure difference between the inner cylinder and the outer cylinder causes air leakage, the read reading is reduced relatively to the previous reading, otherwise, the air leakage is proved, and the air leakage can be ensured to be avoided in the test by the method.
4. The utility model discloses a machine case structure has guaranteed the convenience of test, and convenient to carry can be applicable to the test environment of various complicacies, convenient operation reduces equipment occupation space.
Drawings
Fig. 1 is a model diagram of a chassis of a flow resistance testing device according to an embodiment of the present invention.
Fig. 2 is an exploded view of a testing cylinder of the flow resistance testing device according to the embodiment of the present invention.
Fig. 3 is a layout diagram of circuits and parts in the machine case of the flow resistance testing device according to the embodiment of the present invention.
Fig. 4 is a model diagram illustrating the communication between the inner cylinder and the outer cylinder of the testing cylinder of the flow resistance testing device according to the embodiment of the present invention.
Fig. 5 is a cross-sectional schematic view of a testing cylinder of the flow resistance testing device according to an embodiment of the present invention.
Fig. 6 is a schematic longitudinal section view of a testing cylinder of a flow resistance testing device according to an embodiment of the present invention.
Fig. 7 is a schematic view of a detection button structure of the flow resistance testing device according to an embodiment of the present invention.
Fig. 8 is a schematic view of a casing structure of a flow resistance testing device according to an embodiment of the present invention.
Fig. 9 is a schematic structural view of an upper cover of the flow resistance testing device according to an embodiment of the present invention.
Fig. 10 is a schematic view of a boss structure of a flow resistance testing device according to an embodiment of the present invention.
Description of the symbols: 1-bolt, 2-detection button, 3-spring, 4-handle, 5-boss, 6-upper cover, 7-test cylinder shell, 8-semi-closed hole sealing material and 9-cabinet.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples.
A portable flow resistance testing device comprises a machine case 9 and a testing cylinder which are connected through an air pipe,
the machine box 9 is internally provided with:
the air pressure device is connected with the test cylinder through two air pipes;
and the control circuit is electrically connected with the air pressure device and is used for controlling the operation of the air pressure device.
As shown in fig. 1, which is a model diagram of a portable flow resistance instrument case, the control circuit and the air pressure device in the case 9 are shown in fig. 3,
the pneumatic device comprises:
the suction inlet of the air pump is sequentially connected with a filter and a flow switch through a pipeline, a pressure release valve is connected beside the pipeline between the filter and the flow switch, and the other end of the flow switch is connected with the air pipe;
the first gas washing bottle, the differential pressure tester and the second gas washing bottle of the other gas pipe are connected in sequence through pipelines.
The control circuit comprises:
a power adapter for supplying power to the entire chassis 9;
the manual switch is used for controlling the starting and stopping of the air extraction pump;
the two relays are respectively used for controlling the air pumping pump, the pressure release valve, the flow switch and the power supply of the differential pressure tester;
the controller is respectively in signal connection with the relay, the flow switch and the differential pressure tester through circuits;
the heat dissipation fan is connected with the power adapter through a circuit and used for dissipating heat of the air pressure device;
and the warning device is connected with the relay through a circuit and used for warning when the differential pressure tester measures that the differential pressure exceeds a certain value.
The control circuit and the air pressure device have the following functions:
1. closing the switch air pump to start air pumping, and testing the pressure difference between the inside of the cylinder and the atmosphere by the pressure difference tester;
2. when the pressure difference tester detects that the pressure difference exceeds a certain value, the controller controls the relay to disconnect a switch of the air pumping pump on the relay and close switches of the relay and the pressure release valve, meanwhile, the air pumping pump stops pumping air, the buzzer sounds to alarm, the pressure release valve is opened to release air pressure, and low pressure in the main channel is released;
3. the case is divided into two parts, wherein the pure electric circuit part is arranged in the left case chamber, the air pressure element is arranged in the right case chamber, the two case chambers are separated by a partition plate, and a through hole is reserved on the partition plate for circuit connection;
4. the filter can filter impurities to prevent pipelines from being blocked, and the filter needs to be cleaned and maintained regularly;
5. the flow switch controls the air pumping flow of the air pumping pump, and 20L/min is selected;
6. the gas washing bottle is used for keeping the air pressure of the air exhaust stable.
The structure of the test cartridge of the utility model is shown in fig. 2, the test cartridge comprises an upper cover 6, a test cartridge shell 7 and a semi-closed hole sealing material 8 which are fixedly connected from top to bottom in sequence, a boss 5 is hermetically arranged in the center inner hole of the upper cover 6 in an interference fit manner, a handle 4 is arranged on the upper end surface, and the upper cover 6, the boss 5 and the test cartridge shell 7 are made of cast aluminum; the testing cylinder shell 7 comprises an inner shell and an outer shell, an inner channel and an outer channel are formed, the inner channel is a testing channel, the outer channel is a channel for detecting air leakage, a flanging is arranged at the bottom of the outer shell, and the height of the inner shell is greater than that of the outer shell; the upper cover 6 is provided with a boss 5 in a sealing manner in a manner of interference fit in the central inner hole, the upper cover 6 is provided with two radial air holes, and the boss 5 is respectively provided with two air holes for communicating the two radial air holes and the two channels inside and outside the test cylinder shell 7. The upper cover 6 and the boss 5 are assembled together in an interference fit mode, the gap is sealed by using a sealant, two radial holes are formed in the upper cover 6 and the boss 5 and are connected with the case 9 through pipelines, the two radial holes are used for air exhaust and air pressure test respectively, the upper cover 6 is fixed with the test cartridge shell 7 through the bolt 1, the gap is still sealed by using the sealant, the test cartridge shell 7 comprises an inner layer shell and an outer layer shell, an inner channel and an outer channel are formed, the inner channel is a channel for test, the outer channel is a channel for detecting air leakage, and the final connection position of the radial holes of the upper cover 6 is an inner cylinder.
The utility model discloses there is the device that detects gas leakage, as shown in figure 4, there is a diameter 2 mm's aperture in the radial direction of boss 5 except aspirating hole and test hole, and this aperture is used for communicateing the inside and outside passageway of test cartridge case 7.
Specifically, as shown in fig. 5 and 6, the boss 5 and the upper cover 6 are further provided with a communication hole for communicating the inner channel and the outer channel of the test cartridge housing 7, the upper cover 6 is provided with a stepped hole for connecting the communication hole, and a detection button 2 for controlling the on-off of the communication hole is inserted into the stepped hole. The section view of the test cartridge 10 shows that a channel with the diameter of 2mm exists between the inner channel of the test cartridge shell 7 and the detection button 2, the channel is usually closed, when the detection button 2 is pressed, the spring 3 below the detection button 2 is compressed, the hole on the detection button 2 is communicated with the channel, the inner channel and the outer channel of the test cartridge shell 7 are communicated, if the inner channel leaks air at the moment, the outer channel also leaks air, the air pressure test value is sharply reduced, and whether the test cartridge leaks air or not can be detected by utilizing the principle.
The utility model discloses a 2 structures of test button are shown in fig. 7, test button 2 include the column body, set up the spring of column body bottom, the periphery wall of the column body is equipped with two sealing rings that prevent gas leakage, is equipped with the hole of the interior outer passageway of a intercommunication test cartridge case respectively along radial and axial, the lower extreme of spring 3 is fixed on the ladder face of shoulder hole, the test button can pass through the up-and-down motion of spring. When the detection button 2 is not pressed down, the detection button 2 seals the communication hole with the diameter of 2mm, and after the detection button 2 is pressed down, the hole on the detection button 2 is communicated with the communication hole to communicate the inner channel and the outer channel of the test cartridge shell 7.
The utility model discloses a test cartridge case 7 is shown in fig. 8, test cartridge case 7 includes inlayer casing and outer casing, forms two inside and outside passageways, the passageway is used for the test to the interior passageway, and the passageway of outer passageway for detecting gas leakage, the bottom of outer casing is provided with the turn-ups, inlayer casing height is greater than the height of outer casing. The outer shell external diameter of the test cartridge housing 7 of this embodiment is 120mm, the outer 100mm of internal diameter, highly be 100mm, there is a radial 10 mm's turn-ups at the casing end, the turn-ups height is 5mm, the housing material is cast aluminium, the inlayer shell external diameter of test cartridge is 84mm, the internal diameter is 80mm, highly be 110mm, the housing material is cast aluminium, can see out, inlayer shell height is 5mm than outer shell height, consequently, when outer passageway is revealed, the inlayer passageway is also certain to be revealed. The inner shell and the outer shell are fixed and glued together through 3 limiting blocks.
The utility model discloses a top cover 6 and 5 structures of boss are shown in fig. 9 and 10, and the gas circulation route in the test section of thick bamboo is: the test tube comprises a boss axial hole, a boss radial hole, an upper cover radial hole, an air pipe and an air pump.
When in useThe case 9 is communicated with a power supply, the switch of the case 9 is opened, the test cylinder 10 is placed on a tested piece to be compressed, the semi-closed pore material 8 on the test cylinder 10 can ensure the sealing between the cylinder and the outside, the air pressure difference on the case is read, and the calculation formula of the flow resistance value is as follows
Wherein, Delta P is pressure difference, S is the section area of the inner cylinder, and V is the pumping flow of the air pump. At the moment, the detection button 2 is pressed, the inner cylinder and the outer cylinder of the test cylinder are connected through the upper cover 6 and the detection button 2, if the test cylinder leaks, the reading of the pressure difference is sharply reduced, otherwise, the sealing is proved to be good.
In addition, as an alternative, the structure of the case 9 can be replaced by another box-type structure, and the shape of the case is not limited to a rectangular parallelepiped. The shape of the test button 2 is not limited to a cylinder, and may be a rectangular parallelepiped or the like, or the shape of the test cartridge may be other structures such as a rectangular frame or the like. The radial hole of the upper cover 6 can be one, and then the two branches are led out by using a conduit. The test cartridge 10 may be made of iron or other metal material, and the semi-closed cell material 8 of the test cartridge may be made of foam or other sealing material. The aperture and length of the through hole on the test cartridge 10 may be any reasonable size, and the shape of the through hole is not limited to a circle, and may be a square or irregular shape, etc. The connection between the test cartridge case 7 and the upper cover 6 is not limited to bolt connection, but may be other connection methods such as welding, and the inner layer and the outer layer of the test cartridge case 7 may be fixed by using more than 3 limiting blocks, or may be connected by other fixing methods such as welding.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (10)
1. A portable flow resistance testing device is characterized by comprising a machine box (9) and a testing cylinder which are connected through an air pipe,
the machine box (9) is internally provided with:
the air pressure device is connected with the test cylinder through two air pipes;
and the control circuit is electrically connected with the air pressure device and is used for controlling the operation of the air pressure device.
2. A portable flow resistance tester as claimed in claim 1, wherein said air pressure device comprises:
the suction inlet of the air pump is sequentially connected with the filtering device and the flow switch through a pipeline, a pressure relief valve is further connected beside the pipeline between the filtering device and the flow switch, and the other end of the flow switch is connected with the air pipe;
the first pressure stabilizing device, the pressure difference tester and the second pressure stabilizing device of the other air pipe are connected in sequence through pipelines.
3. A portable flow resistance tester as claimed in claim 2, wherein said filter is a filter and said first and second pressure stabilizers are gas washing bottles.
4. A portable flow resistance testing device according to claim 2, wherein said control circuit comprises:
the power adapter supplies power to the whole case (9);
the two relays are respectively used for controlling the air pumping pump, the pressure release valve, the flow switch and the power supply of the differential pressure tester;
the manual switch is used for manually controlling the starting and stopping of the air extraction pump;
and the controller is in signal connection with the relay, the flow switch and the differential pressure tester through circuits respectively.
5. A portable flow resistance testing device according to claim 4, wherein said control circuit further comprises:
and the heat radiation fan is connected with the power adapter through a circuit and used for radiating heat for the air pressure device.
6. A portable flow resistance testing device according to claim 4 or 5, wherein said control circuit further comprises:
and the warning device is connected with the relay through a circuit and used for warning when the differential pressure tester measures that the differential pressure exceeds a certain value.
7. The portable flow resistance tester according to claim 1, wherein the testing cartridge comprises an upper cover (6), a testing cartridge housing (7), and a semi-closed sealing material (8) fixedly connected in sequence from top to bottom,
a boss (5) is hermetically arranged in the center inner hole of the upper cover (6) in an interference fit manner, and a handle (4) is arranged on the upper end face of the upper cover;
the testing cylinder shell (7) comprises an inner shell and an outer shell, an inner channel and an outer channel are formed, the inner channel is a testing channel, the outer channel is a channel for detecting air leakage, a flanging is arranged at the bottom of the outer shell, and the height of the inner shell is greater than that of the outer shell;
the upper cover (6) center hole interference fit ground is sealed and is provided with boss (5), upper cover (6) are provided with two radial gas pockets, be provided with two radial gas pockets of intercommunication and on boss (5) respectively two air vents of two inside and outside passageways of test cartridge shell (7).
8. The portable flow resistance testing device of claim 7, wherein the boss (5) and the upper cover (6) are further provided with communication holes for communicating the inner channel and the outer channel of the testing cylinder shell (7), the upper cover (6) is provided with a stepped hole for connecting the communication holes, and a detection button (2) for controlling the on-off of the communication holes is inserted into the stepped hole.
9. The portable flow resistance testing device of claim 8, wherein the testing button (2) comprises a cylindrical body and a spring arranged at the bottom of the cylindrical body, the peripheral wall of the cylindrical body is provided with two sealing rings for preventing air leakage, holes for communicating the inner and outer channels of the testing cartridge housing are respectively arranged along the radial direction and the axial direction, the lower end of the spring (3) is fixed on the step surface of the step hole, when the testing button (2) is not pressed, the communicating hole is sealed by the testing button (2), and after the testing button (2) is pressed, the holes on the testing button (2) are communicated with the communicating hole to communicate the inner and outer channels of the testing cartridge housing (7).
10. The portable flow resistance testing device of claim 7, wherein the testing cylinder housing (7) and the upper cover (6) are fixedly connected by bolts or welding; the inner shell of the testing cylinder shell (7) is fixed on the inner wall of the outer shell through a plurality of positioning block adhesives or welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920477942.7U CN210426950U (en) | 2019-04-10 | 2019-04-10 | Portable flow resistance testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920477942.7U CN210426950U (en) | 2019-04-10 | 2019-04-10 | Portable flow resistance testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210426950U true CN210426950U (en) | 2020-04-28 |
Family
ID=70361463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920477942.7U Expired - Fee Related CN210426950U (en) | 2019-04-10 | 2019-04-10 | Portable flow resistance testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210426950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790879A (en) * | 2021-09-14 | 2021-12-14 | 湖北三江航天万山特种车辆有限公司 | Device and method for detecting unobstructed air path |
-
2019
- 2019-04-10 CN CN201920477942.7U patent/CN210426950U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790879A (en) * | 2021-09-14 | 2021-12-14 | 湖北三江航天万山特种车辆有限公司 | Device and method for detecting unobstructed air path |
| CN113790879B (en) * | 2021-09-14 | 2024-02-13 | 湖北三江航天万山特种车辆有限公司 | Device and method for detecting unobstructed gas path |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 Termination date: 20210410 |