CN206738271U - Air pressure decompressor - Google Patents
Air pressure decompressor Download PDFInfo
- Publication number
- CN206738271U CN206738271U CN201720543157.8U CN201720543157U CN206738271U CN 206738271 U CN206738271 U CN 206738271U CN 201720543157 U CN201720543157 U CN 201720543157U CN 206738271 U CN206738271 U CN 206738271U
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- China
- Prior art keywords
- pressure
- decompression
- cylinder body
- piston
- sealing ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of air pressure decompressor, including decompression piston and decompression cylinder body.Described decompression piston forms low pressure chamber and high pressure chest in decompression cylinder body in the decompression cylinder body.High-pressure side sealing ring is installed in the high pressure chest inner bottom part.The external peripheral surface of the decompression cylinder body is cascaded surface, and the outer surface at low pressure chamber end is the flank being connected with radio tire pressure sensor.There is the mounting groove of low-pressure end sealing ring in the root of the flank.In use, the big piston end connection wireless tyre pressure sensor of decompression cylinder assembly, big piston end intracavitary are full of hydraulic oil, and with sealing ring sealing against leakage.Depressurize the charging connector of the tested wheel of valve piston end connection of cylinder assembly.The blowing pressure in wheel is delivered to larger diameter end by depressurizing the decompression piston in cylinder body from smaller diameter end, and the pressure in larger diameter end is measured by the radio tire pressure sensor of connection.The utility model disclosure satisfy that pressure limit more than 1.6MPa micro radio tire pressure measurement requirements.
Description
Technical field
The present invention relates to pressure test field, specifically a kind of air pressure decompressor
Background technology
At present, in the market to rotate wheel wireless tire pressure measurement apparatus measurement range maximum in 0-1.6MPa.
It is not above the measurement apparatus of 1.6MPa direct carry out wireless tire pressure.At present, wirelessly it is more than 1.6MPa tires although having
The measurement apparatus of pressure.And its measurement apparatus volume is big, weight weight, is not easy for be arranged on measured product.For
Avoid not got rid of in quick rotation, it is necessary to beat mounting hole on product or with glue sticking, destroy product structure, have impact on
Results precision.Because measurement apparatus volume is big, weight weight, in tested moving object, it can also change moving object
Kinetic characteristic.At present, in the market only has tire pressure range in 0-1.6MPa micro radio tire pressure measurement devices.In order to expand
Big wireless tire pressure measurement apparatus pressure measurement range invents a small pneumatic decompressor and the existing 0- in market
1.6MPa micro radio tire pressure measurement devices integrate, and form a pressure measurement range up to 0~6.4MPa micro radio
Tire pressure measurement device.
But pressure limit is there is no at present in the data more than 1.6MPa micro radio tire pressure measurement devices.
The content of the invention
Need to there is no scope in technology in the deficiency more than 1.6MPa micro radio tire pressure measurement devices to fill up,
Invention proposes a kind of air pressure decompressor.
The present invention includes decompression piston and decompression cylinder body.Described decompression piston is in decompression cylinder body, in the decompression
Low pressure chamber and high pressure chest are formd in cylinder body.High-pressure side sealing ring is installed in the high pressure chest inner bottom part.
The length of the decompression cylinder body is 8~12mm.The inner chamber of the decompression cylinder body is stepped, and larger diameter end is low pressure
Chamber, the internal diameter of the low pressure chamber is 4mm；Smaller diameter end is high pressure chest, and the internal diameter of the high pressure chest is 2mm.The low pressure chamber and high pressure
The aperture of through hole between chamber is identical with the external diameter of the piston rod of decompression piston.
The external peripheral surface of the decompression cylinder body is cascaded surface, and the outer surface at low pressure chamber end is to be sensed with radio tire pressure
The flank of device connection.There is the mounting groove of low-pressure end sealing ring in the root of the flank.
The present invention is mainly made up of a decompression cylinder body and decompression piston.The big piston end connection for depressurizing cylinder assembly is wireless
Tyre pressure sensor is taken turns, big piston end intracavitary is full of hydraulic oil, and with sealing ring sealing against leakage.Depressurize the valve piston of cylinder assembly
The charging connector of the tested wheel of end connection.The blowing pressure in wheel is by depressurizing the decompression piston in cylinder body from smaller diameter end transmission
To larger diameter end, the pressure in larger diameter end is measured by the radio tire pressure sensor of connection.
The principle of pressure transmission of the present invention is as follows：
P1×πd2/ 4=P2 × π D2/4 (1)
In formula：D is the big piston diameter of decompressor, unit mm.D is decompressor valve piston diameter, unit mm.P2 is
The big piston end cavity pressure of decompressor, units MPa.P1 is decompressor valve piston end cavity pressure, units MPa.
Obtained by formula (1) formula：
P1=P2 × D2/d2 (2)
D in formula (2)2/d2It is exactly the proportionality coefficient of pressure transmission.It therefrom can be derived that to be equal to by measuring pressure P1 values and survey
The pressure sensor lateral pressure P2 values of amount are multiplied by the proportionality coefficient D of pressure transmission2/d2.Therefore test measurement and control be can be applied to
Rotary high pressure tyre inner pressure.Described D be big piston head diameter, D=4mm；D is the diameter of valve piston.As D=4mm, d
During=2mm, then the proportionality coefficient D of pressure transmission2/d2=4 times., can if coordinating with radio tire pressure sensor of the prior art
Enough measurement ranges by 0~1.6MPa of radio tire pressure sensor expand 4 times to 0~6.4MPa pressure limits.Pressure limit 0~
6.4MPa can cover rotation footprint pressure measurement request.20
The present invention disclosure satisfy that pressure limit more than 1.6MPa micro radio tire pressure measurement requirements.Showed using market
0~1.6MPa micro radio tire pressure measurement devices for having with it is integrated, formed a tire pressure measurement scope up to 0~
6.4MPa micro radio tire pressure measurement device.
Brief description of the drawings
Fig. 1 is the structural representation of decompressor；
Fig. 2 is instrumentation plan.In figure：
1. low-pressure end sealing ring；2. decompression piston；3. depressurize cylinder body；4. high-pressure side sealing ring；5. radio tire pressure sensor；
6. tested wheel charging connector；7. big piston end；8. valve piston end.
Embodiment
The present embodiment be it is a kind of be used for move container wireless pressure measurement decompressor, including decompression piston 2 and decompression
Cylinder body 3.Described decompression piston forms low pressure chamber and high pressure chest in decompression cylinder body in the decompression cylinder body.Institute
State high pressure chest inner bottom part and high-pressure side sealing ring 4 is installed.
The decompression cylinder body 3 is hollow revolving body, and length is 8~12mm.The inner chamber of the decompression cylinder body is big straight to be stepped
Footpath end is low pressure chamber, and the internal diameter of the low pressure chamber is 4mm；Smaller diameter end is high pressure chest, and the internal diameter of the high pressure chest is 2mm.It is described low
Press the aperture of the through hole between chamber and high pressure chest identical with the external diameter of the piston rod of decompression piston 2.Outside the decompression cylinder body
Circumferential surface is cascaded surface, and the outer surface at low pressure chamber end is the flank being connected with radio tire pressure sensor 5.In the spiral shell
There is the mounting groove of low-pressure end sealing ring 1 root in line face.
During assembling：Hydraulic oil is filled with the cavity volume of wireless tire pressure measurement sensor 5；By the big work of decompression piston 2
The end face of plug is concordant with the decompression threaded end of cylinder body 3, then will depressurize the external screw thread and wireless wheel tire pressure of the big piston end 7 of cylinder body 3
The internal thread connection fastening of force measuring sensors 5, the big piston end chamber is sealed by sealing ring 1.It is described to depressurize the small of cylinder body
The end of piston end chamber 8 is connected 6 with tested wheel charging connector, is sealed by sealing ring 4.
During work：Tested footprint pressure P1 passes through the valve piston end 8 of the UNICOM's decompressor of charging connector 6, described valve piston
End is high pressure chest, and pressure P1 is acted on the minor diameter d of decompression piston 2 end face, and it is P1 × π d to produce thrust2/4；This is pushed away
The dynamic major diameter termination extrusion chamber space of decompression piston 2 is pushed, cavity pressure is increased, when pressure rises to P2, is made in pressure P2
It is on D end face with the diameter at butt end of decompression piston 2, and it is P2 × π D to produce propulsive thrust2/4；When two thrusts reach identical
When, decompression piston 2 is static, keeps balance, then P2 measures pressure by wireless tire pressure measurement sensor 5, obtains formula (3)
P1×πd2/ 4=P2 × π D2/4 (3)
In formula：D is the diameter at butt end of decompression piston 2, unit mm；D is the top diameter of decompression piston 2, unit mm；P2 nothings
The pressure of line tyre pressure sensor measurement, i.e. decompressor mesolow cavity pressure；Units MPa.P1 is tested wheel the blowing pressure,
That is the interior pressure of decompressor mesohigh chamber；Units MPa.
Obtained by formula (3) formula：
P1=P2 × D2/d2 (4)
Major part piston diameter D=4 millimeters in formula (4), top diameter d=2 millimeters, the then proportionality coefficient of pressure transmission
D2/d2=4 times.Then have：P1=4 × P2, i.e.,：The pressure value P 2 of radio tire pressure sensor measurement is multiplied by 4, just obtains tested wheel
Interior the blowing pressure value P1.
Therefore, high pressure relief device is mixed with the radio tire pressure sensor of in the market radio tire pressure sensor can be existed
0~1.6MPa measurement range expands 4 times to 0~6.4MPa pressure limits.0~6.4MPa of pressure limit can cover whirler
Take turns pressure measurement request.
Claims (3)
1. a kind of air pressure decompressor, it is characterised in that including decompression piston and decompression cylinder body；Described decompression piston, which is located at, to be subtracted
In cylinder pressure body, low pressure chamber and high pressure chest are formd in the decompression cylinder body；High-pressure side is installed in the high pressure chest inner bottom part
Sealing ring.
2. air pressure decompressor as claimed in claim 1, it is characterised in that the length of the decompression cylinder body is 8~12mm；This subtracts
The inner chamber of cylinder pressure body is stepped, and larger diameter end is low pressure chamber, and the internal diameter of the low pressure chamber is 4mm；Smaller diameter end is high pressure chest, should
The internal diameter of high pressure chest is 2mm；The aperture of through hole between the low pressure chamber and high pressure chest and the piston rod of decompression piston it is outer
Footpath is identical.
3. air pressure decompressor as claimed in claim 2, it is characterised in that the external peripheral surface of the decompression cylinder body is ladder
Face, and the outer surface at low pressure chamber end is the flank being connected with radio tire pressure sensor；Have in the root of the flank low
The mounting groove of pressure side sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720543157.8U CN206738271U (en) | 2017-05-16 | 2017-05-16 | Air pressure decompressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720543157.8U CN206738271U (en) | 2017-05-16 | 2017-05-16 | Air pressure decompressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206738271U true CN206738271U (en) | 2017-12-12 |
Family
ID=60566141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720543157.8U Expired - Fee Related CN206738271U (en) | 2017-05-16 | 2017-05-16 | Air pressure decompressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206738271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898827A (en) * | 2022-11-24 | 2023-04-04 | 上海羿弓氢能科技有限公司 | Novel high-frequency action decompression cylinder for diaphragm compressor |
-
2017
- 2017-05-16 CN CN201720543157.8U patent/CN206738271U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898827A (en) * | 2022-11-24 | 2023-04-04 | 上海羿弓氢能科技有限公司 | Novel high-frequency action decompression cylinder for diaphragm compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20171212 |