CN204142327U - A kind of liquid level sensor - Google Patents
A kind of liquid level sensor Download PDFInfo
- Publication number
- CN204142327U CN204142327U CN201420573403.0U CN201420573403U CN204142327U CN 204142327 U CN204142327 U CN 204142327U CN 201420573403 U CN201420573403 U CN 201420573403U CN 204142327 U CN204142327 U CN 204142327U
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- CN
- China
- Prior art keywords
- outer tube
- threaded connector
- aluminium alloy
- wall
- inner chamber
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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.)
- Withdrawn - After Issue
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A kind of liquid level sensor, comprise threaded connector and the outer tube as external electrode, threaded connector upper end outer wall is provided with screw thread, described outer tube upper end is stretched in the inner chamber of threaded connector, the external diameter of outer tube and the diameter of threaded connector inner chamber adapt, and the outer wall of outer tube upper end is directly welded on the inwall of threaded connector inner chamber; Or be provided with fastening structure between outer wall in outer tube upper end and the inwall of threaded connector inner chamber.Product structure of the present utility model is simple, and method is easy and simple to handle, installs firmly, is beneficial to guarantee the safety and reliability of liquid level sensor when reality uses.
Description
Technical field
The utility model relates to a kind of liquid level sensor.
Background technology
Liquid level sensor is that the change by gathering liquid level realizes measuring, it mainly utilizes the area coverage of two electrodes (be namely used as the outer tube W of external electrode and be used as the interior pipe N of interior electrode) to change with the change of liquid level (see Fig. 1), thus causing the relation of corresponding electric capacitance change to carry out level gauging, the electric signal variable quantity (i.e. the variable quantity of tested liquid level H) of electric capacity being converted to standard exports.
At present, the outer tube of liquid level sensor adopts laser or argon arc welding mode to be connected with the outer wall of six square thread joints, there is obvious convex epirelief and the irregular bar shaped arc line T(of welding see Fig. 1 at weld).Outside weld seam is exposed to, not only make product appearance not beautiful, and due in air containing more impurity dust etc., easily make commissure corrode, there is the problems such as outer tube connection is insecure, affect the safety and reliability of liquid level sensor when reality uses.
Utility model content
The technical problems to be solved in the utility model is, overcomes the above-mentioned defect that prior art exists, provides a kind of outer tube to be connected firmly, the liquid level sensor of reliable operation.
The utility model solves the technical scheme that its technical matters adopts:
A kind of liquid level sensor, comprise threaded connector and the outer tube as external electrode, threaded connector upper end outer wall is provided with screw thread, described outer tube upper end is stretched in the inner chamber of threaded connector, the external diameter of outer tube and the diameter of threaded connector inner chamber adapt, the outer wall of outer tube upper end can be directly welded on the inwall of threaded connector inner chamber, realizes outer tube and is connected with the firm of threaded connector; Or be provided with fastening structure between outer wall in outer tube upper end and the inwall of threaded connector inner chamber, realize outer tube and be connected with the firm of threaded connector.
Further, described fastening structure comprises draw-in groove on the inwall being located at threaded connector inner chamber and outer tube locking notch, outer tube selects extruding that the aluminium alloy outer tube of deformation can occur, aluminium alloy outer tube is assemblied in threaded connector inner chamber by crimp mode, the outer wall of aluminium alloy outer tube is provided with the bulge loop suitable with draw-in groove, described bulge loop is produced by aluminium alloy outer tube compressional deformation, and the bulge loop be located on the outer wall of aluminium alloy outer tube is stuck in the draw-in groove in threaded connector on cavity wall; The outer wall of described aluminium alloy outer tube is also provided with the projection suitable with outer tube locking notch, and described projection is also produced by aluminium alloy outer tube compressional deformation, and the projection on the outer wall of aluminium alloy outer tube is stuck in the outer tube locking notch in threaded connector on cavity wall.
Further, described aluminium alloy outer tube can select 6061 aluminium alloy outer tubes.
Further, the quantity being located at the draw-in groove in threaded connector on cavity wall is preferably 3.
Further, described threaded connector is hexagon head threaded connector.
The outer tube of the liquid level sensor of the utility model is connected and fixed method and is:
The aluminium alloy outer tube upper end that deformation can occur in extruding is stretched in the inner chamber of threaded connector, radial deformation pressure is applied to the madial wall of aluminium alloy outer tube, aluminium alloy outer tube is extruded, make aluminium alloy outer tube generation compressional deformation, deformations divide formed can be suitable with the draw-in groove on cavity wall in threaded connector bulge loop, and can with the projection of the outer tube locking notch adaptation on cavity wall in threaded connector, the direct pincers of bulge loop that aluminium alloy outer tube is produced by compressional deformation enters in the draw-in groove in threaded connector on cavity wall, thus make outer tube and threaded connector play anti-detachment effect, simultaneously, the projection that aluminium alloy outer tube is produced by compressional deformation also pincers enters in the outer tube locking notch in threaded connector on cavity wall, play the effect that anti-outer tube rotates, realize outer tube to be connected with the firm of threaded connector, aluminium alloy outer tube is assembled in threaded connector inner chamber by crimp mode.
In addition, aluminium alloy outer tube upper end is being stretched into after in the inner chamber of threaded connector, also by the mode such as laser or argon arc welding, the outer wall of outer tube upper end is directly welded on the inwall of threaded connector inner chamber, weld seam is positioned at below the screw thread mouth of threaded connector, so that the further assembling of other modular construction of liquid level sensor.
The utility model both realizes outer tube by compressional deformation mode and is connected with the firm of threaded connector, also the outer wall of outer tube upper end can be directly welded in the inwall of threaded connector inner chamber, realize outer tube and be connected with the firm of threaded connector.When being made the outer tube generation compressional deformation of liquid level sensor by external force, the direct pincers of deformation part of outer tube enters in draw-in groove in threaded connector on cavity wall and outer tube locking notch, formation can be suitable with the draw-in groove on cavity wall in threaded connector bulge loop, and can with the projection of the outer tube locking notch adaptation on cavity wall in threaded connector, realize outer tube to be connected with the firm of threaded connector, reach the object be locked, this kind of mode is without the need to using the welding such as laser and argon arc, threaded connector and outer tube are without any weld, the firm connection of product can be realized again while guarantee product design is attractive in appearance, keep the original assembly structure of product, functional reliability is high.When the outer wall of outer tube upper end is directly welded in the inwall of threaded connector inner chamber, outside weld seam is not directly exposed to, while guarantee product design is attractive in appearance, also can realize the firm connection of product.
Product structure of the present utility model is simple, and method is easy and simple to handle, installs firmly, is beneficial to guarantee the safety and reliability of liquid level sensor when reality uses.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing liquid level sensor;
Fig. 2 is the vertical view of the threaded connector of the utility model liquid level sensor;
Fig. 3 is the A-A cut-open view of the threaded connector of the liquid level sensor of the utility model shown in Fig. 2;
Fig. 4 is the cut-open view after the threaded connector of the utility model liquid level sensor and outer tube are assembled.
In figure: W---as the outer tube of external electrode; N---manage as in interior electrode; H---tested liquid level; T---welding convex epirelief and irregular bar shaped arc line; 1---threaded connector; 2---draw-in groove; 3---outer tube locking notch; 4---bulge loop.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment 1:
With reference to Fig. 2, Fig. 3 and Fig. 4, a kind of liquid level sensor, comprise threaded connector 1 and the outer tube W as external electrode, threaded connector upper end outer wall is provided with screw thread (not shown), described outer tube W upper end is stretched in the inner chamber of threaded connector 1, the external diameter of outer tube W and the diameter of threaded connector 1 inner chamber adapt, and be provided with fastening structure, realize outer tube and be connected with the firm of threaded connector between the inwall of the outer wall in outer tube W upper end and threaded connector 1 inner chamber.
Described fastening structure comprises draw-in groove 2 on the inwall being located at threaded connector inner chamber and outer tube locking notch 3, outer tube W selects extruding that the aluminium alloy outer tube of deformation can occur, aluminium alloy outer tube is assemblied in threaded connector 1 inner chamber by crimp mode, the outer wall of aluminium alloy outer tube is provided with the bulge loop 4 suitable with draw-in groove 2, described bulge loop 4 is produced by aluminium alloy outer tube compressional deformation, and the bulge loop 4 be located on the outer wall of aluminium alloy outer tube is stuck in the draw-in groove 2 in threaded connector on cavity wall; The outer wall of described aluminium alloy outer tube is also provided with the protruding (not shown) suitable with outer tube locking notch 3, described projection is also produced by aluminium alloy outer tube compressional deformation, and the projection on the outer wall of aluminium alloy outer tube is stuck in the outer tube locking notch 3 in threaded connector 1 on cavity wall.
Described aluminium alloy outer tube can select 6061 aluminium alloy outer tubes.
The quantity being located at the draw-in groove 2 in threaded connector 1 on cavity wall is 3.
Described threaded connector 1 is hexagon head threaded connector.
The outer tube of the liquid level sensor of the present embodiment is connected and fixed method and is:
The aluminium alloy outer tube upper end that deformation can occur in extruding is stretched in the inner chamber of threaded connector 1, radial deformation pressure (external force namely shown in Fig. 4) is applied to the madial wall of aluminium alloy outer tube, aluminium alloy outer tube is extruded, make aluminium alloy outer tube generation compressional deformation, deformations divide formed can be suitable with the draw-in groove 2 on cavity wall in threaded connector 1 bulge loop 4, and can with the projection of outer tube locking notch 3 adaptation on cavity wall in threaded connector 1, the direct pincers of bulge loop 4 that aluminium alloy outer tube is produced by compressional deformation enters in the draw-in groove 2 in threaded connector 1 on cavity wall, thus make outer tube W and threaded connector 1 play anti-detachment effect, simultaneously, the projection that aluminium alloy outer tube is produced by compressional deformation also pincers enters in the outer tube locking notch 3 in threaded connector 1 on cavity wall, play the effect that anti-outer tube W rotates, realize outer tube W to be connected with the firm of threaded connector 1, aluminium alloy outer tube is assembled in threaded connector 1 inner chamber by crimp mode.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is:
The outer wall of outer tube W upper end is directly welded on the inwall of threaded connector 1 inner chamber, realizes outer tube W and is connected with the firm of threaded connector 1.
The outer tube of the liquid level sensor of the present embodiment is connected and fixed method and is:
Aluminium alloy outer tube upper end is being stretched into after in the inner chamber of threaded connector 1, by the mode such as laser or argon arc welding, the outer wall of outer tube W upper end is directly welded on the inwall of threaded connector 1 inner chamber, weld seam is positioned at below the screw thread mouth (not shown) of threaded connector 1, so that the further assembling of other modular construction of liquid level sensor.
All the other are with embodiment 1.
Claims (5)
1. a liquid level sensor, comprise threaded connector and the outer tube as external electrode, threaded connector upper end outer wall is provided with screw thread, it is characterized in that, described outer tube upper end is stretched in the inner chamber of threaded connector, the external diameter of outer tube and the diameter of threaded connector inner chamber adapt, and the outer wall of outer tube upper end is directly welded on the inwall of threaded connector inner chamber; Or be provided with fastening structure between outer wall in outer tube upper end and the inwall of threaded connector inner chamber.
2. liquid level sensor according to claim 1, it is characterized in that, described fastening structure comprises draw-in groove on the inwall being located at threaded connector inner chamber and outer tube locking notch, outer tube selects extruding that the aluminium alloy outer tube of deformation can occur, aluminium alloy outer tube is assemblied in threaded connector inner chamber by crimp mode, the outer wall of aluminium alloy outer tube is provided with the bulge loop suitable with draw-in groove, described bulge loop is produced by aluminium alloy outer tube compressional deformation, and the bulge loop be located on the outer wall of aluminium alloy outer tube is stuck in the draw-in groove in threaded connector on cavity wall; The outer wall of described aluminium alloy outer tube is also provided with the projection suitable with outer tube locking notch, and described projection is also produced by aluminium alloy outer tube compressional deformation, and the projection on the outer wall of aluminium alloy outer tube is stuck in the outer tube locking notch in threaded connector on cavity wall.
3. liquid level sensor according to claim 2, is characterized in that, described aluminium alloy outer tube can select 6061 aluminium alloy outer tubes.
4. liquid level sensor according to claim 2, is characterized in that, the quantity being located at the draw-in groove in threaded connector on cavity wall is 3.
5. liquid level sensor according to claim 1 and 2, is characterized in that, described threaded connector is hexagon head threaded connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573403.0U CN204142327U (en) | 2014-10-08 | 2014-10-08 | A kind of liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573403.0U CN204142327U (en) | 2014-10-08 | 2014-10-08 | A kind of liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204142327U true CN204142327U (en) | 2015-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420573403.0U Withdrawn - After Issue CN204142327U (en) | 2014-10-08 | 2014-10-08 | A kind of liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204142327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236667A (en) * | 2014-10-08 | 2014-12-24 | 湖南菲尔斯特传感器有限公司 | Liquid level sensor and connecting and fixing method of outer pipe of liquid level sensor |
-
2014
- 2014-10-08 CN CN201420573403.0U patent/CN204142327U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236667A (en) * | 2014-10-08 | 2014-12-24 | 湖南菲尔斯特传感器有限公司 | Liquid level sensor and connecting and fixing method of outer pipe of liquid level sensor |
| CN104236667B (en) * | 2014-10-08 | 2019-01-15 | 湖南菲尔斯特传感器有限公司 | A kind of liquid level sensor and its outer tube are connected and fixed method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150204 Effective date of abandoning: 20190115 |
|
| AV01 | Patent right actively abandoned |