CN201025703Y - Photoelectric liquid level switch - Google Patents
Photoelectric liquid level switch Download PDFInfo
- Publication number
- CN201025703Y CN201025703Y CNU2007200349677U CN200720034967U CN201025703Y CN 201025703 Y CN201025703 Y CN 201025703Y CN U2007200349677 U CNU2007200349677 U CN U2007200349677U CN 200720034967 U CN200720034967 U CN 200720034967U CN 201025703 Y CN201025703 Y CN 201025703Y
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- CN
- China
- Prior art keywords
- housing
- prism
- fixed
- photoelectric
- receiving tube
- 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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- Level Indicators Using A Float (AREA)
Abstract
The utility model discloses a photoelectric liquid-position switch, comprising a shell, a photoelectric transmitting tube and a photoelectric receiving tube which are fixed on the back of the shell and a protecting jacket on the front of the shell. A prism which is fixed in the protecting jacket can make the incident ray of the photoelectric transmitting tube received by the photoelectric receiving tube after totally reflected when contacting with the air. When the prism is immerged in liquid, the incident ray of the photoelectric transmitting tube can be refracted, and part of the reflection ray is received by the photoelectric receiving tube. The utility model has no active components, which can not result in the mechanical wear easily, and has the advantages of little maintenance, high measure accuracy, long life time, high pressure tolerance and high resistance to shock of liquid.
Description
Technical field
The utility model relates to a kind of photoelectricity liquid-level switch.
Background technology
In the prior art, in the control switch of various liquid levels, the general float-type tank level control system that adopts, as the float switch that in water box of water closet, uses, and the float liquid level sensor of the electromagnetism that in automotive oil tank, uses, it is characterized in that float can raise along with the variation of liquid level or descend, it is not high to survey precision, because mechanical wear, useful life is not long, performance is lower, particularly in the environment of HTHP, movable float can be subjected to the fierceness of liquid and impact the not high direct fail safe that influences of the precision of its measurement, float also damages easily, needs often to safeguard.
Summary of the invention
The utility model purpose is: a kind of photoelectricity liquid-level switch is provided, has higher accuracy under the environment of high pressure-temperature, maintenance is few, long service life.
The technical solution of the utility model is: a kind of photoelectricity liquid-level switch, this switch comprise reflection of photoemission cell, the photoelectric receiving tube that installs and fixes and the ejaculation light that can make photoemission cell and the prism that is received by photoelectric receiving tube.
The further technical scheme of the utility model is: a kind of photoelectricity liquid-level switch, this switch comprise reflection of photoemission cell, the photoelectric receiving tube that installs and fixes and the ejaculation light that can make photoemission cell and the prism that is received by photoelectric receiving tube; This switch also comprises a housing, and described photoemission cell and photoelectric receiving tube are fixed on the rear portion of housing, and described prism is fixed on the front end of housing, and the front end of described housing is provided with open-topped sheath, and prism is positioned at the cavity of sheath.
The more detailed technical scheme of the utility model is: a kind of photoelectricity liquid-level switch, this switch comprise reflection of photoemission cell, the photoelectric receiving tube that installs and fixes and the ejaculation light that can make photoemission cell and the prism that is received by photoelectric receiving tube; This switch also comprises a housing, and described photoemission cell and photoelectric receiving tube are fixed on the rear portion of housing, and described prism is fixed on the front end of housing, and the front end of described housing is provided with open-topped sheath, and prism is positioned at the cavity of sheath; Described housing is fixed on the pressure vessel, pressure vessel wall is provided with opening, be welded with flange seat on the opening, the rear portion of described housing is fixed with the flange gland, flange seat is passed in the front portion of housing, be provided with sealing ring and fastening between flange gland and the flange seat, housing is fixed on the pressure vessel wall by flange screw.
The utility model advantage is:
1. do not have movable parts in the housing of the present utility model, be difficult for causing mechanical wear, maintenance is few, long service life, the impact of high pressure resistant anti-liquid again.
2. the utility model comes measuring liquid level by the variation of the luminous flux of prism, the certainty of measurement height.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is a structural representation of the present utility model.
Wherein: 1 housing; 11 photoemission cells; 12 photoelectric receiving tubes; 13 prisms; 14 sheaths; 141 cavitys; 2 pressure vessels; 21 openings; 31 flange seats, 32 flange glands; 33 flange screws; 4 sealing rings;
Embodiment
Embodiment: as shown in Figure 1, a kind of photoelectricity liquid-level switch, comprise the housing 1 that is installed on the pressure vessel 2, the rear portion of housing 1 is fixed with photoemission cell 11 and photoelectric receiving tube 12, the front end of housing 1 is provided with open-topped sheath 14, be provided with prism in the cavity 141 of sheath 14, in use, the fierceness impact that sheath 14 can be avoided being subjected to liquid because of prism 13 causes its surface abrasion, described prism 13 can make the ejaculation linear light reflection of photoemission cell 11 and be received by photoelectric receiving tube 12, described pressure vessel 2 walls are provided with opening 21, be welded with flange seat 31 on the opening 21, described housing 1 rear portion is fixed with flange gland 32, the housing 1 anterior flange seat 31 that inserts, the prism 13 of housing 1 front end enters in the pressure vessel 2, is provided with sealing ring 4 between flange gland 32 and the flange seat 31 and leaks to prevent pressure vessel 2, flange gland 32 and flange seat 31 are fastening by flange screw 33, and housing 1 is fixed on pressure vessel 2 walls.
In use, when the prism in pressure vessel 2 13 touches air, photoemission cell 11 incident lights form total reflection on the minute surface below the prism 13, reflection ray is received fully by photoelectric receiving tube 12, and this moment, light signal was stronger, switch opens, when prism 13 immersed in the liquid, the minute surface top of the light that photoemission cell 11 is injected below prism 13 was refracted, and some reverberation is received by photoelectric receiving tube 12, this moment light signal a little less than, switch cuts out.
Do not have movable parts in the housing of the present utility model, be difficult for causing mechanical wear, maintenance is few, certainty of measurement height, long service life, the impact of high pressure resistant anti-liquid again.
Claims (4)
1. photoelectricity liquid-level switch is characterized in that: this switch comprises photoemission cell (11), the photoelectric receiving tube (12) that installs and fixes and the ejaculation light that can make photoemission cell (11) reflection and the prism (13) that is received by photoelectric receiving tube (12).
2. according to the described photoelectricity liquid-level switch of claim 1, it is characterized in that: this switch also comprises a housing (1), described photoemission cell (11) and photoelectric receiving tube (12) are fixed on the rear portion of housing (1), and described prism (13) is fixed on the front end of housing (1).
3. according to the described photoelectricity liquid-level switch of claim 2, it is characterized in that: the front end of described housing (1) is provided with open-topped sheath (14), and prism is positioned at the cavity (141) of sheath (14).
4. according to the described photoelectricity liquid-level switch of claim 2, it is characterized in that: described housing (1) is fixed on the pressure vessel (2), pressure vessel (2) wall is provided with opening (21), be welded with flange seat (31) on the opening (21), the rear portion of described housing (1) is fixed with flange gland (32), flange seat (31) is passed in the front portion of housing (1), be provided with sealing ring (4) and fastening between flange gland (32) and the flange seat (31), housing (1) is fixed on the pressure vessel (2) by flange screw (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200349677U CN201025703Y (en) | 2007-03-01 | 2007-03-01 | Photoelectric liquid level switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200349677U CN201025703Y (en) | 2007-03-01 | 2007-03-01 | Photoelectric liquid level switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201025703Y true CN201025703Y (en) | 2008-02-20 |
Family
ID=39099559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200349677U Expired - Fee Related CN201025703Y (en) | 2007-03-01 | 2007-03-01 | Photoelectric liquid level switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201025703Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557906A (en) * | 2013-11-22 | 2014-02-05 | 深圳市能点科技有限公司 | Liquid level sensor and fish tank liquid level control device |
| CN104296952A (en) * | 2014-09-28 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve tower and water leakage detection system thereof |
| CN105526987A (en) * | 2016-01-07 | 2016-04-27 | 北京万顺华科技有限公司 | Detection head for photoelectric liquid level switch |
-
2007
- 2007-03-01 CN CNU2007200349677U patent/CN201025703Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557906A (en) * | 2013-11-22 | 2014-02-05 | 深圳市能点科技有限公司 | Liquid level sensor and fish tank liquid level control device |
| CN104296952A (en) * | 2014-09-28 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve tower and water leakage detection system thereof |
| CN105526987A (en) * | 2016-01-07 | 2016-04-27 | 北京万顺华科技有限公司 | Detection head for photoelectric liquid level switch |
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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: 20080220 Termination date: 20100301 |