CN2901265Y - Full seal weighing sensor - Google Patents
Full seal weighing sensor Download PDFInfo
- Publication number
- CN2901265Y CN2901265Y CN 200620072368 CN200620072368U CN2901265Y CN 2901265 Y CN2901265 Y CN 2901265Y CN 200620072368 CN200620072368 CN 200620072368 CN 200620072368 U CN200620072368 U CN 200620072368U CN 2901265 Y CN2901265 Y CN 2901265Y
- Authority
- CN
- China
- Prior art keywords
- elastic body
- load cells
- kovar alloy
- hermetically sealed
- stem
- Prior art date
- 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
Links
Landscapes
- Measurement Of Force In General (AREA)
Abstract
A canned weighing sensing device, which comprises an elastic body (6), close covers (4, 5) jointing and sealing the part without the cable conductors in the elastic body, an electronic component packed inside the elastic body (6) and cable conductors, is characterized in that a kovar alloy button stem (3) is jointed on the part with the cable conductors of the elastic body, and sealed by fusing the glass on the kovar alloy silk (3), one end of which is connected with an inner electronic component and the external cable conductor is connected on the other end. After carrying out the leak detection specification to the canned weighing sensing device, the invention can confirm the air tightness inside the whole sensing device, to avoid protective adhesive layer and be convenient for filling nitrogen. Compared with the prior weighing sensing device, the utility model has a greater sealing property of wet, water, chemical corrosion resistance, and high reliability.
Description
Technical field
The utility model relates to a kind of sensor, is specifically related to a kind of hermetically sealed LOAD CELLS.
Background technology
Various types of LOAD CELLS in the past (comprising beam type sensor, S type sensor and column type sensor etc.) internal electronic component and circuit thereof are normally made protective finish to prevent erosion and the damage to it of aqueous vapor in the external environment or various harmful gas with various glue.In order to improve the reliability of sensor, development in recent years the various methods of protecting internal electronic component and circuit thereof with laser bonding or argon arc welding welding elastic body and capping.With existing public beam type LOAD CELLS is example, and its hermetically-sealed construction is realized like this: the blind hole that the elastic body symmetria bilateralis distributes or the through hole outside seal by laser bonding securing cover plate (being capping); Certainly for preventing that cover plate from becoming boss to be touched down at blind hole or via hole profile and influencing sealing property, the technical scheme that Chinese patent 95244573.2 provides is, the blind hole of elastic body both sides or through hole aperture form stepped hole through reaming, cover plate embeds in the stepped hole welded seal again, has so just further guaranteed the sealingly secure of this class sensor.Yet all kept such link in the seal approach of this class LOAD CELLS, promptly still adopted glue to seal in the junction that cable enters sensor internal.As everybody knows, contact at the interface with elastic body and cable at colloid, even all there are many spaces usually in colloid itself, and aqueous vapor molecule or some gas molecules are easy to penetrate into sensor internal and corrode or damage electronic devices and components and circuit thereof from these spaces; Simultaneously in the long-term use of sensor, colloid usually can rupture because of the relative twisting between cable and cable or cable and the elastic body and friction even peel off.Owing to there is the weak link of this glue envelope, the sealing of the so-called hermetically sealed LOAD CELLS of existing stainless steel welding can not get real guarantee.
Summary of the invention
The utility model purpose is to provide a kind of hermetically sealed LOAD CELLS to society, it inserts the transition structure sealing of welding with elastic body of elastomeric junction at cable, cable passes through this transition structure and internal electronic component conducting, thereby has solved the problem that original glue envelope mode makes the sealing of sensor in the cable junction can not get guaranteeing.
In order to solve the problems of the technologies described above, the main technical schemes of the hermetically sealed LOAD CELLS of the utility model is: comprise elastic body, capping, electronic devices and components and cable thereof, electronic devices and components are encapsulated in elastic body inside, the part of no outgoing cable line is by the capping welded seal on the elastic body, it is characterized by needs the part of outgoing cable line to be welded with the kovar alloy stem stem on the elastic body, the kovar alloy silk is fixed on the kovar alloy stem stem by glass head seal, one end connects internal electronic component, and an end connects the external electric cable.
The electronic devices and components of the hermetically sealed LOAD CELLS of the utility model comprise foil gauge and connection line thereof, and concrete combination and the connected mode between them is prior art certainly, is not going to repeat.
The elastic body of the hermetically sealed LOAD CELLS of the utility model and capping can adopt stainless steel to make.
The elastic body of the hermetically sealed LOAD CELLS of the utility model and the welding manner between capping comprise the laser bonding of prior art and argon arc welding etc., are preferably laser bonding certainly.The preferred argon arc welding of kovar alloy stem stem and elastomeric welding manner simultaneously.
The inside of the hermetically sealed LOAD CELLS of the utility model can charge into nitrogen as blanket gas.
The hermetically sealed LOAD CELLS of the utility model adopts the kovar alloy stem stem to connect as transition in the junction that cable inserts sensor elastomer inside, adopt argon arc welding or Laser Welding (LBW) to make airtight welded seal between this kovar alloy stem stem and the elastic body, and on the kovar alloy stem stem between the alloy silk of conducting external electric cable and sensor internal electronic devices and components by glass head seal insulation and location, why adopting the kovar alloy silk is because it is identical with the expansion coefficient of glass as conductor, and afterwards glass can expansion explosion so just to have prevented to be heated both.Again to this hermetically sealed LOAD CELLS 100% hunt leak qualified after, this has just guaranteed the impermeability of whole sensor inside, can no longer be coated with the protection glue-line, and is more conducive to charge into blanket gas such as nitrogen.Compare with existing LOAD CELLS, the sealing property of the moisture proof of the hermetically sealed LOAD CELLS of the utility model, waterproof and anti-chemical corrosion is better, and reliability is higher.
Description of drawings
Fig. 1 is a concrete structure synoptic diagram of the present utility model.
Embodiment
In conjunction with the accompanying drawings embodiment of the present utility model is described, Fig. 1 is the structural representation of the hermetically sealed LOAD CELLS of a kind of specific embodiment beam type of the hermetically sealed LOAD CELLS of the utility model.It mainly comprises stainless steel elastic body 6, stainless steel capping, kovar alloy stem stem 3, electronic devices and components and cable thereof.The stainless steel capping comprises recessed lid 5 of stainless steel and stainless steel flat cover 4.The part of no outgoing cable line on the stainless steel elastic body 6 (comprising blind hole and through hole) is by recessed lid 5 of laser bonding stainless steel and 4 sealings of stainless steel flat cover.The part that extension line is arranged is by argon arc welding kovar alloy stem stem 3, and kovar alloy stem stem 3 upper glass sealings by fusing are fixed with kovar alloy silk 1, and sealing glass solidifies the back and forms beaded glass 2; Kovar alloy silk 1 runs through beaded glass 2 one termination sensor internal electronic devices and components, another termination external cable line.
Claims (5)
1. hermetically sealed LOAD CELLS, comprise elastic body, capping, electronic devices and components and cable thereof, electronic devices and components are encapsulated in elastic body inside, the part of no outgoing cable line capping welded seal on the elastic body is characterized by the part that the outgoing cable line is arranged on the elastic body and is welded with the kovar alloy stem stem; The kovar alloy silk is fixed on the kovar alloy stem stem by glass head seal, and an end connects internal electronic component, and an end connects the external electric cable.
2. a kind of hermetically sealed LOAD CELLS according to claim 1 is characterized by kovar alloy stem stem and elastomeric welding and adopts argon arc welding or laser bonding.
3. a kind of hermetically sealed LOAD CELLS according to claim 1 is characterized by described elastic body and capping and is made by stainless steel.
4. according to claim 1,2 or 3 described a kind of hermetically sealed LOAD CELLS, it is characterized by elastic body and capping and weld with laser bonding or argon arc.
5. a kind of hermetically sealed LOAD CELLS according to claim 4 is characterized by sensor internal and charges into nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620072368 CN2901265Y (en) | 2006-04-19 | 2006-04-19 | Full seal weighing sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620072368 CN2901265Y (en) | 2006-04-19 | 2006-04-19 | Full seal weighing sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901265Y true CN2901265Y (en) | 2007-05-16 |
Family
ID=38085429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620072368 Expired - Fee Related CN2901265Y (en) | 2006-04-19 | 2006-04-19 | Full seal weighing sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2901265Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807529A (en) * | 2014-06-23 | 2015-07-29 | 蒋旭东 | Weighing sensor with corrosion-resistant performance |
-
2006
- 2006-04-19 CN CN 200620072368 patent/CN2901265Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807529A (en) * | 2014-06-23 | 2015-07-29 | 蒋旭东 | Weighing sensor with corrosion-resistant performance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5276766B2 (en) | Organic photovoltaic component with encapsulant | |
| CN202048997U (en) | Water-proof anti-aging high-reliability temperature sensor | |
| CN206670840U (en) | A kind of small-sized silicon piezoresistance type gas pressure sensor structure | |
| AU2014226216B2 (en) | Wire seal for a detector assembly | |
| CA2404785A1 (en) | Inertia transducer | |
| CN103855104A (en) | Moisture-tight semiconductor module and method for producing moisture-tight semiconductor module | |
| CN2901265Y (en) | Full seal weighing sensor | |
| CN101079343B (en) | Voltage-sensitive resistor with compound encapsulation voltage-leakage device | |
| CN110174209A (en) | Media-isolated pressure sensor | |
| CN101390259B (en) | Electrical plug with sealed-off metal insert parts | |
| US20190041288A1 (en) | High temperature protected wire bonded sensors | |
| CN205027465U (en) | Two remaining pressure tube structures | |
| CN202974413U (en) | Weighing sensor and sensor cable waterproof structure | |
| CN109855754A (en) | A kind of temperature sensor | |
| CN201993194U (en) | Submerged type differential pressure transmitter | |
| CN108431570A (en) | Pressure sensor | |
| CN103411722B (en) | A kind of improved pressure transmitter | |
| CN209264133U (en) | Temperature sensor fixture | |
| CN201054289Y (en) | Voltage sensitive electric resistor with compound sealing and voltage leakage device | |
| CN104181202A (en) | Multi-redundancy hydrogen sensor | |
| CN205488774U (en) | Solder joint prevent condensation structure | |
| CN204154671U (en) | A kind of many redundancies hydrogen gas sensor | |
| CN204243058U (en) | Solar module | |
| CN219871119U (en) | Insulating sleeve temperature rise test tool | |
| KR20050095019A (en) | Apparatus and method for detecting leakage of pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070516 Termination date: 20110419 |