CN109883607A - A kind of fixed core minor pressure buffer device and pressure sensor - Google Patents
A kind of fixed core minor pressure buffer device and pressure sensor Download PDFInfo
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- CN109883607A CN109883607A CN201910124341.2A CN201910124341A CN109883607A CN 109883607 A CN109883607 A CN 109883607A CN 201910124341 A CN201910124341 A CN 201910124341A CN 109883607 A CN109883607 A CN 109883607A
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- 230000003139 buffering effect Effects 0.000 claims description 30
- 239000012530 fluid Substances 0.000 claims description 28
- 239000000945 filler Substances 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The present invention provides a kind of fixed core minor pressure buffer device and pressure sensors, comprising: fixed fuse and liner；Wherein, fixed fuse main body is cylinder, and its side wall is set as serrated face；One end of fixed fuse is provided with the first protrusion, first lobed interior is provided with first passage and second channel, and the end face of first protrusion is arranged in the opening of first passage, the side wall of first protrusion is arranged in the opening of second channel, and first passage is connected to the second channel；The other end of fixed fuse is provided with the second protrusion, second lobed interior is provided with third channel and fourth lane, and the end face of second protrusion is arranged in the opening of third channel, the side wall of second protrusion is arranged in the opening of fourth lane, and third channel is connected to the fourth lane；Liner is provided with Five-channel, and Five-channel is connected to the third channel.The device and pressure sensor structure comprising the device is simple, small in size and light weight.
Description
Technical Field
The embodiment of the invention relates to the technical field of sensors, in particular to a fixed core type pressure buffering device and a pressure sensor.
Background
A Pressure Transducer is a device or apparatus that senses a Pressure signal and converts the Pressure signal into a usable output electrical signal according to a certain rule. A pressure sensor is usually composed of a pressure sensitive element and a signal processing unit. Pressure sensors can be classified into gauge pressure sensors, differential pressure sensors, and absolute pressure sensors according to different types of test pressures. Pressure sensors are one of the most widely used. The traditional pressure sensor is mainly based on a mechanical structure type device, and indicates pressure by deformation of an elastic element, but the structure is large in size and heavy in weight, and cannot provide electrical output. With the development of semiconductor technology, semiconductor pressure sensors have come to be developed. Its advantages are small size, light weight, high accuracy and high temp. Particularly, with the development of MEMS technology, the semiconductor sensor is miniaturized, and has low power consumption and high reliability.
Pressure pulses in the hydraulic line lead to a reduced reliability and a reduced service life of the pressure measuring device, but currently there is no effective pressure pulse damping device in the pressure sensor, and therefore there is a continuing need to provide a pressure damping device for pressure sensors.
Disclosure of Invention
Embodiments of the present invention provide a fixed core pressure buffer and pressure sensor that overcomes, or at least partially solves, the above-mentioned problems.
In a first aspect, an embodiment of the present invention provides a fixed core type pressure buffering device, including: fixing the core and the lining; wherein,
the fixing core main body is cylindrical, and the side wall of the fixing core main body is a sawtooth surface;
a first bulge is arranged at one end of the fixed core, a first channel and a second channel are arranged in the first bulge, an opening of the first channel is arranged on the end surface of the first bulge, an opening of the second channel is arranged on the side wall of the first bulge, and the first channel is communicated with the second channel;
a second bulge is arranged at the other end of the fixed core, a third channel and a fourth channel are arranged in the second bulge, an opening of the third channel is arranged on the end face of the second bulge, an opening of the fourth channel is arranged on the side wall of the second bulge, and the third channel is communicated with the fourth channel;
a fifth channel is arranged inside the lining, and the fifth channel is communicated with the third channel.
Further, the first channel and the third channel are blind holes which coincide with the axis of the fixing core.
Further, the second channel is a through hole penetrating through the side wall of the first protrusion, and the fourth channel is a through hole penetrating through the side wall of the second protrusion.
On the other hand, the embodiment of the invention provides a pressure sensor, which comprises a pressure core body, a filler neck and the fixed core type pressure buffering device; wherein,
the fixed core type pressure buffering device is arranged between a fluid inlet of the pipe connecting nozzle and the pressure core body, the fluid inlet of the pipe connecting nozzle is communicated with a first channel of the fixed core type pressure buffering device, and fluid flows into the fixed core type pressure buffering device through the first channel of the fixed core type pressure buffering device and flows out of the fixed core type pressure buffering device through a fifth channel of the fixed core type pressure buffering device.
The embodiment of the invention provides a fixed core type pressure buffering device and a pressure sensor, wherein the fixed core type pressure buffering device comprises a fixed core type pressure buffering device, a fixed core capable of forming a gap similar to a thread with an external component is arranged, fluid is introduced into the gap similar to the thread formed by the fixed core and the external component through a channel arranged in the fixed core, and the gap similar to the thread greatly weakens the hydraulic pulse of the fluid, so that the hydraulic pulse of the fluid flowing out of a lining is basically eliminated. The device has simple structure, small volume and light weight.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a plan cross-sectional view of a pressure sensor including a fixed core pressure buffer in accordance with an embodiment of the present invention;
FIG. 2 is a perspective cross-sectional view of the pressure sensor of FIG. 1 including a fixed core pressure buffer;
reference numerals:
1-fixing the core; 2-lining;
3-a pressure core; 4-a filler neck;
11-a first channel; 12-a second channel;
13-a third channel; 14-a fourth channel;
21-fifth channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a fixed core type pressure buffering device, as shown in fig. 1-2, including: fixing the core 1 and the lining 2; wherein,
the main body of the fixed core 1 is cylindrical, and the side wall of the fixed core is a sawtooth surface;
a first bulge is arranged at one end of the fixed core 1, a first channel 11 and a second channel 12 are arranged in the first bulge, an opening of the first channel 11 is arranged on the end surface of the first bulge, an opening of the second channel 12 is arranged on the side wall of the first bulge, and the first channel 11 is communicated with the second channel 12;
a second bulge is arranged at the other end of the fixed core 1, a third channel 13 and a fourth channel 14 are arranged in the second bulge, an opening of the third channel 13 is arranged on the end surface of the second bulge, an opening of the fourth channel 14 is arranged on the side wall of the second bulge, and the third channel 13 is communicated with the fourth channel 14;
a fifth channel 21 is arranged inside the lining, and the fifth channel 21 is communicated with the third channel 13.
The length of the sawtooth surface of the main body of the fixed core 1 can be determined by calculation before the fixed core is processed according to actual requirements. The serrated surface of the body of the stationary core 1 may form a thread-like clearance with an external component by suitable arrangement. The opening of the second channel 12 is provided on the side wall of the first protrusion of the stationary core 1, and the fluid flowing out through the opening of the second channel 12 enters the stationary core 1 to form a screw-like gap with an external component. The opening of the fourth channel 14 is arranged on the side wall of the second protrusion of the fixed core 1, so that the fluid flowing out through the gap similar to the thread formed by the fixed core 1 and the external component flows into the third channel 13 communicated with the gap through the fourth channel 14.
Specifically, the fluid to be pressure buffered enters the fixed core 1 through the first channel 11, then enters the gap similar to the thread formed by the fixed core 1 and the external component through the second channel 12, and flows out from the gap similar to the thread formed by the fixed core 1 and the external component, enters the fourth channel 14, then enters the third channel 13, and further flows into the fifth channel 21. During the process that the fluid passes through the gap which is formed by the fixed core 1 and an external component and is similar to a thread, the hydraulic pulse of the fluid can be greatly weakened, so that the buffer effect is achieved, namely the hydraulic pulse of the fluid flowing out from the fifth channel 21 is basically eliminated, and the safety of a subsequent detection chip is ensured.
According to the fixed core type pressure buffering device provided by the embodiment of the invention, the fixed core capable of forming a gap similar to a thread with an external component is arranged, and fluid is introduced into the gap similar to the thread formed by the fixed core and the external component through the channel arranged in the fixed core, and the gap similar to the thread greatly weakens the hydraulic pulse of the fluid, so that the hydraulic pulse of the fluid flowing out of the lining is basically eliminated. The device has simple structure, small volume and light weight.
In the above embodiment, the first channel 11 and the third channel 13 are blind holes coinciding with the axis of the fixing core 1.
Specifically, the diameters of the first channel 11 and the third channel 13 may be determined by calculation according to actual requirements before the fixed core 1 is machined.
In the above embodiment, the second channel 12 is a through hole penetrating through the sidewall of the first protrusion, and the fourth channel 14 is a through hole penetrating through the sidewall of the second protrusion.
In particular, the diameters of the second channel 12 and the fourth channel 14 can be determined by calculation according to the actual requirements before machining the fixed core 1.
Referring to fig. 1-2 again, the pressure sensor according to the embodiment of the present invention includes a pressure core 3, a filler neck 4, and the above-mentioned fixed core type pressure buffering device; wherein,
the fixed core type pressure buffering device is arranged between a fluid inlet of the filler pipe mouth 4 and the pressure core body 3, the fluid inlet of the filler pipe mouth 4 is communicated with a first channel 11 of the fixed core type pressure buffering device, and fluid flows into the fixed core type pressure buffering device through the first channel 11 of the fixed core type pressure buffering device and flows out of a fifth channel 21 of the fixed core type pressure buffering device.
Specifically, the fixed core type pressure buffering device is arranged in the filler neck 5, fluid needing pressure buffering enters the pressure sensor through a fluid inlet of the filler neck 5, enters the fixed core 1 through the first channel 11, enters a gap similar to a thread formed by the fixed core 1 and an external component through the second channel 12, flows out from the gap similar to the thread formed by the fixed core 1 and the external component, enters the fourth channel 14, enters the third channel 13, and further flows into the fifth channel 21. The hydraulic pulse of the fluid can be greatly weakened during the process of passing through the thread-like gap formed between the fixed core 1 and the external component, so that the buffer effect is achieved, namely, the hydraulic pulse of the fluid flowing out from the fifth channel 21 is basically eliminated, and the safety of the pressure core body 3 is ensured.
The embodiment of the invention provides a pressure sensor, which comprises a fixed core type pressure buffering device, wherein a fixed core capable of forming a gap similar to a thread with an external component is arranged, and fluid is introduced into the gap similar to the thread formed by the fixed core and the external component through a channel arranged in the fixed core, and the gap similar to the thread greatly attenuates the hydraulic pulse of the fluid, so that the hydraulic pulse of the fluid flowing out of a lining is basically eliminated. The device has simple structure, small volume and light weight.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. A fixed core pressure cushioning device, comprising: fixing the core and the lining; wherein,
the fixing core main body is cylindrical, and the side wall of the fixing core main body is a sawtooth surface;
a first bulge is arranged at one end of the fixed core, a first channel and a second channel are arranged in the first bulge, an opening of the first channel is arranged on the end surface of the first bulge, an opening of the second channel is arranged on the side wall of the first bulge, and the first channel is communicated with the second channel;
a second bulge is arranged at the other end of the fixed core, a third channel and a fourth channel are arranged in the second bulge, an opening of the third channel is arranged on the end face of the second bulge, an opening of the fourth channel is arranged on the side wall of the second bulge, and the third channel is communicated with the fourth channel;
a fifth channel is arranged inside the lining, and the fifth channel is communicated with the third channel.
2. The stationary core pressure damping apparatus as in claim 1, wherein said first and third passages are blind holes coincident with said stationary core axis.
3. The fixed core pressure buffer as recited in claim 1, wherein said second passage is a through hole passing through a sidewall of said first boss, and said fourth passage is a through hole passing through a sidewall of said second boss.
4. A pressure sensor comprising a pressure core, a filler neck and a fixed core pressure buffer device as claimed in any one of claims 1 to 3; wherein,
the fixed core type pressure buffering device is arranged between a fluid inlet of the pipe connecting nozzle and the pressure core body, the fluid inlet of the pipe connecting nozzle is communicated with a first channel of the fixed core type pressure buffering device, and fluid flows into the fixed core type pressure buffering device through the first channel of the fixed core type pressure buffering device and flows out of the fixed core type pressure buffering device through a fifth channel of the fixed core type pressure buffering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910124341.2A CN109883607A (en) | 2019-02-19 | 2019-02-19 | A kind of fixed core minor pressure buffer device and pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910124341.2A CN109883607A (en) | 2019-02-19 | 2019-02-19 | A kind of fixed core minor pressure buffer device and pressure sensor |
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| CN109883607A true CN109883607A (en) | 2019-06-14 |
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| CN201910124341.2A Pending CN109883607A (en) | 2019-02-19 | 2019-02-19 | A kind of fixed core minor pressure buffer device and pressure sensor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110198171A1 (en) * | 2010-02-16 | 2011-08-18 | Alexander Lux | Device for reducing pressure pulses in pressure sensors |
| CN202938961U (en) * | 2012-12-07 | 2013-05-15 | 丁巨龙 | Shock absorption type pressure gauge connector |
| CN204679204U (en) * | 2015-06-05 | 2015-09-30 | 合肥中亚传感器有限责任公司 | A kind of pressure unit |
| CN205504326U (en) * | 2015-12-03 | 2016-08-24 | 武汉航空仪表有限责任公司 | Hydraulic cushion system - structure for instrument |
| CN106404272A (en) * | 2016-11-21 | 2017-02-15 | 浙江福立分析仪器股份有限公司 | High-pressure infusion pump pressure buffer sensor and pressure buffer method |
| CN109323793A (en) * | 2018-11-16 | 2019-02-12 | 重庆宗星机械有限责任公司 | A kind of fluid survey pressure pressure ga(u)ge damper |
| CN209589341U (en) * | 2019-02-19 | 2019-11-05 | 武汉中航传感技术有限责任公司 | A kind of fixed core minor pressure buffer device and pressure sensor |
-
2019
- 2019-02-19 CN CN201910124341.2A patent/CN109883607A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110198171A1 (en) * | 2010-02-16 | 2011-08-18 | Alexander Lux | Device for reducing pressure pulses in pressure sensors |
| CN202938961U (en) * | 2012-12-07 | 2013-05-15 | 丁巨龙 | Shock absorption type pressure gauge connector |
| CN204679204U (en) * | 2015-06-05 | 2015-09-30 | 合肥中亚传感器有限责任公司 | A kind of pressure unit |
| CN205504326U (en) * | 2015-12-03 | 2016-08-24 | 武汉航空仪表有限责任公司 | Hydraulic cushion system - structure for instrument |
| CN106404272A (en) * | 2016-11-21 | 2017-02-15 | 浙江福立分析仪器股份有限公司 | High-pressure infusion pump pressure buffer sensor and pressure buffer method |
| CN109323793A (en) * | 2018-11-16 | 2019-02-12 | 重庆宗星机械有限责任公司 | A kind of fluid survey pressure pressure ga(u)ge damper |
| CN209589341U (en) * | 2019-02-19 | 2019-11-05 | 武汉中航传感技术有限责任公司 | A kind of fixed core minor pressure buffer device and pressure sensor |
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