CN2492840Y - Leakage-preventing electric contact - Google Patents
Leakage-preventing electric contact Download PDFInfo
- Publication number
- CN2492840Y CN2492840Y CN 01214768 CN01214768U CN2492840Y CN 2492840 Y CN2492840 Y CN 2492840Y CN 01214768 CN01214768 CN 01214768 CN 01214768 U CN01214768 U CN 01214768U CN 2492840 Y CN2492840 Y CN 2492840Y
- Authority
- CN
- China
- Prior art keywords
- metal
- leakproof
- leakage
- insulated conduit
- electric contact
- 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
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A leakage-proof electric contact belongs to the manufacturing field of liquid level sensors and consists of a metal cylindrical body provided with a central throughhole. One end of the cylindrical body is firmly linked with a front metal cover via an insulated conduit, the other end is firmly linked with a metal leakage-proof cover via an insulated leakage-proof conduit, and both ends of an electrode lead wire passing through the central throughhole of the cylindrical body are respectively linked on the front metal cover and the metal leakage-proof cover. Compared with the existing similar products, the utility model has a better leakage-proof function.
Description
The utility model relates to measurement instrument, and particularly the detection part of liquid level sensor is made the field.
The detection probe (being commonly referred to electric contact) of existing liquid level sensor mainly is made up of column that adopts conductive metallic material to make and the front end end cover that is fixedly connected with contact conductor, and the employing insulated conduit is connected between column and the front end end cover, and insulating effect electrifies.During use, an end that is fixedly connected with the column of front end end cover is stretched in the container of liquid level to be measured, and column is fixed on the container wall.Metal front end end cover and contact conductor electric connection.The end as the resistance measurement signal is directly drawn in the contact conductor outer end from the column central through hole, liquid level to be measured and wall, column electric connection, can be used as the another end of resistance measurement signal, the two ends of above-mentioned resistance measurement signal are inserted in the corresponding circuits of liquid level sensor, the variation of electric signal can be converted at last to the variation of liquid level, thereby measure the numerical value of liquid level in the container.In actual use, there is corrosion (chemical corrosion or the galvanic corrosion) effect of actuating medium in the container on the one hand, on the other hand, also may be subjected to the destruction of mechanical collision power, thereby, the detection probe part that stretches in the container suffers damage often, comes off as the solder joint of front end end cover and insulated conduit etc.In case this situation takes place, if pressure vessel then the actuating medium in the container will and go out through the eruption of prosecution gauge head central through hole, gently then influence ordinary production, pollute working environment, heavy then jeopardize worker-house property and workman's life security.
The purpose of this utility model is the problem that exists at prior art and defective and a kind of anti-leak electric contact is provided, set up the anti-leak function.
The purpose of this utility model is achieved in that the anti-leak electric contact, and comprise the column that adopts metal material to make: its centre offers a through hole; Insulated conduit: the one end connects firmly mutually with above-mentioned column one end; Metal front end end cover: connect firmly on the other end of insulated conduit; Contact conductor: an end connects firmly on the metal front end end cover, and the other end is drawn from above-mentioned column central through hole; Also comprise the leakproof insulated conduit: the one end connects firmly mutually with the described column other end; Also comprise metal leakproof end cap: connect firmly on the leakproof insulated conduit other end; The other end of described contact conductor connects firmly on metal leakproof end cap.
From above design as can be seen, on the basis of existing detection probe (being electric contact) outer end open type, add metal leakproof rear end cap, connect firmly the leakproof insulated conduit between rear end cap and the probe body (columnar metal body), insulating effect electrifies.One end of resistance measurement signal is made up of front end end cover, electrode cable, rear end cap, and its other end is made up of liquid level, container wall, probe body.If probe body is damaged in the generation container, place the outer rear end cap of container still to play good anti-leak effect.Increased the security of producing.
Below in conjunction with accompanying drawing the utility model is elaborated.
Accompanying drawing is a sectional view of the present utility model.
In the accompanying drawing, the column of this novel main body for adopting metal material to make, comprise right cylinder, prism or the two assembly, be preferably the body of screw 4,---hexagonal prism and nail bar---the cylindrical assembly of promptly working as head of screw, its centre offers a through hole, and the head of screw bottom surface is provided with seal face, has screw thread 4a on the nail rod outer surface; The body of screw one end connects firmly insulated conduit 5, insulated conduit 5 other ends that adopt high purity aluminium oxide to make connect firmly metal front end end cover 6, connect firmly leakproof insulated conduit 3 on the body of screw other end, connect firmly metal leakproof end cap 1 on leakproof insulated conduit 3 other ends that high purity aluminium oxide is made, contact conductor 2 places body of screw central through hole, and two ends are connected to respectively on metal front end end cover and the metal leakproof end cap.During installation, vise head of screw, the body of screw is spun (can adopt welding) on container (9) wall, be provided with sealing gasket (8) therebetween, metal front end end cover one end stretches in the container.As the resistance measurement signal of liquid level sensor in two kinds of situation, first liquid level (7) and metal front end end cover contactless state, (corresponding big resistance value), it two is liquid level and metal front end end cover contact condition, (corresponding resistance value is zero).Above-mentioned two insulated conduits adopt industrial ceramics (high purity aluminium oxide) to make, and it adopts the ceramet welding manner with being connected of metalwork.
Claims (3)
1, a kind of anti-leak electric contact, comprise the column that adopts metal material to make: its centre offers a through hole; Insulated conduit (5): the one end connects firmly mutually with above-mentioned column one end; Metal front end end cover (6): on the other end of insulated conduit; Contact conductor (2): an end connects firmly on metal front end end cover (6), and the other end is drawn from above-mentioned column central through hole; It is characterized in that, also comprise leakproof insulated conduit (3): the one end connects firmly mutually with the described column other end; Also comprise metal leakproof end cap (1): connect firmly on leakproof insulated conduit (3) other end; The other end of described contact conductor (2) connects firmly on metal leakproof end cap (1).
2, anti-leak electric contact according to claim 1 is characterized in that, described column is the body of screw (4): be provided with the head of screw of seal face and nail bar that outside surface has screw thread (4a) is formed by the bottom surface.
3, anti-leak electric contact according to claim 1 and 2 is characterized in that, described leakproof insulated conduit (3) adopts high purity aluminium oxide to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01214768 CN2492840Y (en) | 2001-04-19 | 2001-04-19 | Leakage-preventing electric contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01214768 CN2492840Y (en) | 2001-04-19 | 2001-04-19 | Leakage-preventing electric contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2492840Y true CN2492840Y (en) | 2002-05-22 |
Family
ID=33633466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01214768 Expired - Fee Related CN2492840Y (en) | 2001-04-19 | 2001-04-19 | Leakage-preventing electric contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2492840Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387259A (en) * | 2018-10-23 | 2019-02-26 | 中国船舶重工集团公司第七〇九研究所 | Water-level probe |
-
2001
- 2001-04-19 CN CN 01214768 patent/CN2492840Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387259A (en) * | 2018-10-23 | 2019-02-26 | 中国船舶重工集团公司第七〇九研究所 | Water-level probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |