CN214096436U - Pressure sensor base - Google Patents
Pressure sensor base Download PDFInfo
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- CN214096436U CN214096436U CN202023224296.5U CN202023224296U CN214096436U CN 214096436 U CN214096436 U CN 214096436U CN 202023224296 U CN202023224296 U CN 202023224296U CN 214096436 U CN214096436 U CN 214096436U
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Abstract
The utility model discloses a belong to the metallic glass sealing field, specifically relate to a pressure sensor base. The pressure sensor base comprises a shell, a sealing glass blank and a lead wire, wherein the shell is provided with a glass sealing hole in the axial direction, the sealing glass blank is placed into the glass sealing hole, the sealing glass blank is provided with a plurality of through holes, the lead wire penetrates through the through holes from bottom to top, the glass sealing hole is in a step shape, a first step is arranged above the sealing glass hole, and a second step is arranged above the first step. The utility model aims to provide a high performance pressure sensor base and manufacturing method thereof, the utility model discloses a high performance pressure sensor base is optimized and manufacturing method, and the product withstand voltage and the resistance performance of preparation are strong. The application range of the sensor is greatly improved.
Description
Technical Field
The utility model discloses a belong to the metallic glass sealing field, specifically relate to a pressure sensor base.
Background
In the field of sensors, the pressure sensor base is mainly made of SUS316L, and the Kovar alloy material is used as the inner conductor pin. However, in the actual use process, current overload caused by the harsh working environment and overlarge voltage often occur, the service life is too short, and equipment fails, the piezoresistive pressure sensor using metal tantalum as a base material works in the harsh environment, the corrosion resistance of the piezoresistive pressure sensor is far superior to that of a stainless steel product, the piezoresistive pressure sensor has strong resistance to pitting corrosion, acid corrosion and stress corrosion, and the piezoresistive pressure sensor has excellent corrosion resistance to alkali, chloride and chlorine organic substances, nitric acid, sulfuric acid, hydrochloric acid and the like and can meet the use requirements under various working conditions. And the application of the iron-nickel-clad copper composite lead wire enables the sensor to withstand high current and high voltage. The metal tantalum gradually enters the field of sensors with excellent metal performance, and the tantalum metal sensors must replace stainless steel sensors to be used under the worst working conditions with the continuous improvement of product requirements under the conditions of high temperature, high humidity and high acidity in the future.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high performance pressure sensor base, the utility model discloses a high performance pressure sensor base optimizes and the preparation method, and the product withstand voltage and the resistance performance of preparation are strong. The application range of the sensor is greatly improved.
The utility model provides a pressure sensor base, includes shell, sealing glass base and lead wire, the shell is equipped with the glass seal hole in the axial, will seal the glass base and put into in the glass seal hole, be equipped with a plurality of through-holes on the sealing glass base, pass the lead wire to the lower and upper the through-hole, the glass seal hole is the echelonment, is located sealing glass hole top is equipped with first step, is located first step top and is equipped with the second step, be equipped with the round recess on the lateral wall of shell.
Further, the lead is an iron-nickel-clad-copper composite lead.
Furthermore, the shell is made of tantalum.
Further, the iron-nickel-clad-copper composite lead is subjected to local gold plating treatment, nickel sulfamate is used for electroplating and priming treatment, the thickness of a nickel layer is 6 microns, and the thickness of an electroplated soft gold layer is 0.5 microns.
Furthermore, the lower end of the sealing glass hole is provided with a chamfer.
Furthermore, the lower end of the iron-nickel-clad-copper composite lead is provided with a boss.
The utility model discloses the beneficial effect who brings is:
the utility model discloses pressure sensor base, which comprises an outer shell, there is the glass sealing hole on the shell, and the compound lead wire of iron-nickel alloy copper-clad seals through the sealing-in glass base, owing to the improvement to product electrical property and service environment requirement, needs the product to have high insulating nature, high withstand voltage nature, high corrosion resistance, the sensor of ordinary structure can't satisfy the service condition so adopts the whole sealing of glass to realize on the shell, because whole glass's addition, has improved glass's quantity so has very big improvement to the electrical property of product. The shell made of metal tantalum can be suitable for high-temperature and high-acid environments. The manufactured product has strong voltage resistance and insulation performance. The product has strong corrosion resistance. The performance of the product is improved, and the application range is expanded.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a pressure sensor base.
Detailed Description
The following figures are further illustrative of the present invention with reference to the accompanying drawings and examples:
the utility model discloses in, as shown in fig. 1, a pressure sensor base, including shell 1, sealing glass base 3 and lead wire 4, shell 1 is equipped with glass sealing hole 2 on the axial, will seal glass base 3 and put into in the glass sealing hole 2, be equipped with two through-holes 5 on the sealing glass base 3, pass lead wire 4 to down and on the through-hole 5, glass sealing hole 2 is the echelonment, is located 2 tops in sealing glass hole are equipped with first step 6, are located 6 tops in first step and are equipped with second step 7.
In this embodiment, the lead 4 is an iron-nickel-clad copper composite lead.
In this embodiment, the material of the housing 1 is tantalum.
In this embodiment, the thermal expansion coefficient of the housing 1 is 5 to 10 x 10-6m/K, and the expansion coefficient of the sealing glass blank 3 is 8-12 x 10-6m/K, the sealing temperature is 850-1000 ℃, and the expansion coefficient of the iron-nickel-clad-copper composite lead is 6-10 x 10-6m/K。
In this embodiment, the iron-nickel-clad-copper composite lead is subjected to local gold plating treatment, and nickel sulfamate is used for electroplating and priming treatment, wherein the thickness of the nickel layer is 6 μm, and the thickness of the electroplated soft gold layer is 0.5 μm.
In this embodiment, a ring of grooves 8 is formed on the outer side wall of the housing 1.
In this embodiment, the lower end of the sealing glass hole 2 is provided with a chamfer 9.
In this embodiment, the lower end of the iron-nickel-clad-copper composite lead is provided with a boss 10.
The structure principle and the manufacturing method of the present invention are further explained with reference to the accompanying drawings as follows:
the shell 1 and the iron-nickel-clad copper composite lead 4 are put into 5 percent alkaline solution for ultrasonic cleaning to remove surface oil stains, and the sealing glass 3 is put into analytically pure absolute ethyl alcohol for ultrasonic cleaning to remove surface impurities. And drying the cleaned shell 1, the iron-nickel-clad copper composite lead 4 and the sealing glass 3 by using an oven at the temperature of 95 ℃ for 30 min. And putting the dried shell 1 into a packaging mold, and putting the iron-nickel-clad copper composite lead 4 into the glass sealing hole 2 through the sealing glass 3. And putting the assembled shell into a chain type mesh belt packaging furnace, wherein the packaging temperature is 970 ℃, the atmosphere protection is nitrogen, and the sealing time is 3.5H. And carrying out local gold plating treatment on the iron-nickel-clad-copper composite lead 4 on the sealed semi-finished product shell, and carrying out electroplating priming treatment by using nickel sulfamate, wherein the thickness of a nickel layer is 6 microns, and the thickness of an electroplated soft gold layer is 0.5 microns. The finished product is subjected to appearance, sealing, electrical property and the like for inspection, and the product is manufactured
In the utility model, the principle and the implementation mode of the utility model are explained by applying the specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the utility model; for those skilled in the art, the invention can be modified in various embodiments and applications without departing from the spirit and scope of the invention, and therefore the scope of the present invention should not be limited by the claims.
Claims (6)
1. The utility model provides a pressure sensor base, its characterized in that includes shell, sealing glass base and lead wire, the shell is equipped with the glass seal hole in the axial, will seal the glass base and put into the glass seal is downthehole, be equipped with a plurality of through-holes on the sealing glass base, pass the lead wire to the lower and upper the through-hole, the glass seal hole is the echelonment, is located sealing glass hole top is equipped with first step, is located first step top and is equipped with the second step, be equipped with the round recess on the lateral wall of shell.
2. The pressure sensor mount of claim 1, wherein the lead is an iron-nickel-clad-copper composite lead.
3. The pressure sensor base of claim 1, wherein the housing is tantalum.
4. The pressure sensor base of claim 2, wherein the iron-nickel-clad-copper composite lead is partially gold-plated, and a plating primer is applied using nickel sulfamate, wherein the nickel layer has a thickness of 6 μm, and the plated soft gold layer has a thickness of 0.5 μm.
5. The pressure sensor base of claim 1, wherein the sealing glass hole is chamfered at a lower end thereof.
6. The pressure sensor base of claim 2, wherein the lower end of the iron-nickel-clad-copper composite lead is provided with a boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023224296.5U CN214096436U (en) | 2020-12-28 | 2020-12-28 | Pressure sensor base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023224296.5U CN214096436U (en) | 2020-12-28 | 2020-12-28 | Pressure sensor base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214096436U true CN214096436U (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202023224296.5U Active CN214096436U (en) | 2020-12-28 | 2020-12-28 | Pressure sensor base |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798157A (en) * | 2020-12-28 | 2021-05-14 | 西安赛尔电子材料科技有限公司 | Pressure sensor base and manufacturing method thereof |
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2020
- 2020-12-28 CN CN202023224296.5U patent/CN214096436U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798157A (en) * | 2020-12-28 | 2021-05-14 | 西安赛尔电子材料科技有限公司 | Pressure sensor base and manufacturing method thereof |
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