CN201653495U - Resistance electrode type liquid level sensor - Google Patents
Resistance electrode type liquid level sensor Download PDFInfo
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- CN201653495U CN201653495U CN2010203014107U CN201020301410U CN201653495U CN 201653495 U CN201653495 U CN 201653495U CN 2010203014107 U CN2010203014107 U CN 2010203014107U CN 201020301410 U CN201020301410 U CN 201020301410U CN 201653495 U CN201653495 U CN 201653495U
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- electrode
- spring
- resistance
- liquid level
- level sensor
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Abstract
The utility model discloses a resistance electrode type liquid level sensor which mainly comprises a resistance circuit board, a circuit board protecting jacket, an electrode slice and a conducting electrode sleeve, wherein the resistance circuit board is provided with matched resistances of fixed amount; the matched resistances are connected in series and respectively lead measuring lines out on an initial end and a tail end formed after connected in series; the initial end is connected with a common electrode by a concentration line; the conducting electrode sleeve has hollow structure; each electrode slice is connected with the matched resistance corresponding to the electrode slice by a lead; the common electrode is arranged below the electrode slice; the conducting electrode sleeves are arranged at interval; the electrode slice is fixedly arranged on the corresponding conducting electrode sleeve; a spring is arranged between the conducting electrode sleeves which are connected with an insulation sleeve; the conducting electrode sleeve is electrically isolated from the spring by the insulation sleeve; and the lead penetrates in the conducting electrode sleeve and the spring. The sensor integrally has elasticity, can perform good buffer action, effectively protects the sensor and has better flexibility during installation.
Description
Technical field
The utility model relates to a kind of sensor, especially a kind of resistance electrode formula liquid level sensor.
Background technology
Present electric pole type liquid level sensor structure: resistance and electrode all are arranged in the Metal Protection shell, and by the junction coating of insulating material (as heat-shrink tube) with resistance and resistance and electrode, only reserving electrode contacts with liquid, to detect liquid level, such structure makes the insulating property that depend on insulating material serviceable life to a great extent of sensor, because insulating property immerse in the liquid for a long time, be easy to cause aging, thereby cause the decreasing insulating between resistance, and as long as the sensor of this type is when insulating material generation minor failure, just can cause to measure and be forbidden, cause scrapping of sensor; On the other hand, the Metal Protection shell does not possess pooling feature owing to be the hardware structure all during use, be damaged easily when being subjected to external force collision, distortion, and reduced dirigibility when installing because of deformation can not take place, and comparatively inconvenience is installed, be unsuitable for the application on the engineering.
Summary of the invention
The purpose of this utility model is to provide a kind of integral body to have the resistance electrode formula liquid level sensor of installing on elasticity, the adaptation engineering for the deficiency that solves above-mentioned technology.
In order to achieve the above object; the resistance electrode formula liquid level sensor that the utility model is designed; it mainly comprises the resistance circuit plate; the circuit board protective sleeve; electrode slice and conductive electrode cover; the resistance circuit plate is provided with the build-out resistor of fixed qty; build-out resistor is connected mutually and the initial end and the end that form after series connection lead to slotted line respectively; initial end links to each other with public electrode by concentric line simultaneously; the conductive electrode cover is hollow structure; each electrode slice links to each other by lead with corresponding build-out resistor with it; make between the electrode slice; string has resistance between electrode slice and the public electrode; described public electrode is positioned at the electrode slice below; as preferably; described electrode slice and lead can be by cold briquettings, and described conductive electrode cover is spaced apart, and electrode slice is fixedly installed on corresponding conductive electrode and puts; between the conductive electrode cover, be provided with spring; conductive electrode puts and is connected with insulation sleeve, and by insulation sleeve and spring electrical isolation, described lead is located in conductive electrode cover and the spring.Being provided with of spring can make this resistance electrode formula liquid level sensor integral body have elasticity, and insulation sleeve can be isolated with spring with the conductive electrode cover, makes electrode slice not produce false sense and answers.In use, when liquid does not contact the conductive electrode cover, resistance value is fixed between two slotted lines, when the conductive electrode cover contacts with liquid, between electrode slice and the public electrode by the liquid short circuit, resistance is the resistance of liquid therebetween, thereby makes that resistance value can be carried out level gauging " utmost point is arranged " only for not by the resistance of the resistance of short circuit according to this characteristic between two slotted lines.
Preferred scheme is that this resistance electrode formula liquid level sensor also comprises and is positioned at the balancing weight of below, and this balancing weight links to each other with the spring or the conductive electrode cover that are positioned at bottom, and balancing weight can guarantee the deadweight that liquid level sensor is required in use, accurately measurement.Described balancing weight can be a derby, and described public electrode also can be connected with balancing weight.
In order when installing and using, to prevent the inner ponding of resistance electrode formula liquid level sensor, thus take place false sense should, as preferably, described balancing weight is provided with pod apertures, pod apertures runs through balancing weight can play good guide functions, prevents ponding.
As preferably, be connected with the spring housing of conduction on the described insulation sleeve, this spring housing is connected with spring, all spring housings and spring form a conductivity integral, and be electrically connected with described initial end, when concentric line or public electrode broke down, this conductivity integral can be used as common port usefulness, guaranteed the normal use of sensor.
Preferred scheme can also be that this resistance electrode formula liquid level sensor also comprises temperature sensor, this temperature sensor is arranged in spring or conductive electrode cover or the insulation sleeve, leads to the thermometric line on it, thereby makes liquid level, temperature integral type, increase result of use, save cost.
As preferably, the circuit board protective sleeve is positioned at the electrode slice top, and be positioned at spring topmost or conductive electrode cover and link to each other.Build-out resistor need not to immerse in the liquid during work.Described circuit board protective sleeve also can be made split type.
Concentric line is the benchmark of whole measuring system, the quality of its electric conductivity, contact directly has influence on the measuring accuracy of sensor, in order to guarantee the reliability of common ground, described concentric line by main core, twist lead outward and insulating coating is formed, outer strand lead is wrapped in the main core outside, and insulating coating coats it.Wherein main core can be used the anti-corrosion electric conducting electrode material, as stainless steel etc., twists lead outward and can use the copper cash of good conductive effect or aluminum steel etc.
The resulting resistance electrode formula of the utility model liquid level sensor, the liquid level build-out resistor is positioned at outside the guard shield, when work, need not resistance is immersed in the liquid, cause the inaccurate problem of sensor measurement thereby solved in the past because of insulativity descends, and made sensor extend greatly serviceable life simultaneously; On the other hand, this resistance electrode formula liquid level sensor integral body has elasticity, and spring can play good buffer action when being subjected to external force collision, distortion; can effectively protect sensor not to be damaged, when mounted, dirigibility be better; install more conveniently, be suitable for the use on the engineering.
Description of drawings
Structural representation when Fig. 1 is embodiment 1 deformation;
Fig. 2 is the cut-open view of embodiment 1;
Fig. 3 is the elementary diagram of embodiment 1;
Structural representation when Fig. 4 is embodiment 2 deformation;
Fig. 5 is the cut-open view of embodiment 2;
Fig. 6 is the enlarged drawing of locating among Fig. 5;
Fig. 7 is the cut-open view of embodiment 3;
Fig. 8 is the structural representation of the concentric line of embodiment 4.
Among the figure: resistance circuit plate 1, circuit board protective sleeve 2, electrode slice 3, conductive electrode cover 4, build-out resistor 5, slotted line 6, spring 7, balancing weight 8, insulation sleeve 9, temperature sensor 10, thermometric line 11, main core 12, twist lead 13, insulating coating 14, concentric line 15, public electrode 16, pod apertures 17, spring housing 18 outward.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
As Fig. 1; 2; shown in 3; the described resistance electrode formula of present embodiment liquid level sensor; be used to measure the liquid level of big sun energy water tank; it mainly comprises resistance circuit plate 1; circuit board protective sleeve 2; four electrode slices 3 and four conductive electrode covers 4; resistance circuit plate 1 is provided with the build-out resistor 5 of four 1000K; build-out resistor 5 mutual series connection and the initial end and the end that form after series connection lead to slotted line 6 respectively; initial end links to each other with public electrode 16 by concentric line 15 simultaneously; conductive electrode cover 4 is hollow structure; each electrode slice 3 and corresponding build-out resistor with it 5 link to each other by lead; make between the electrode slice 3; string has resistance between electrode slice 3 and the public electrode 16; described public electrode 16 is positioned at electrode slice 3 belows; described conductive electrode cover 4 is spaced apart; electrode slice 3 is fixedly installed on the corresponding conductive electrode cover 4 by welding; between conductive electrode cover 4, be provided with spring 7; conductive electrode overlaps 4 inboards and is connected with insulation sleeve 9; and by insulation sleeve 9 and spring 7 electrical isolation, described lead is located in conductive electrode cover 4 and the spring 7.Circuit board protective sleeve 2 is positioned at electrode slice 3 tops, and links to each other with spring 7 that is positioned at the top or conductive electrode cover 4, and build-out resistor 5 need not to immerse in the liquid during work.
As shown in Figure 1, deformation can take place in this resistance electrode formula liquid level sensor.
During use, this resistance electrode formula liquid level sensor is installed in the big sun energy water tank, when four conductive electrode covers 4 are not had by water logging successively, the resistance that two slotted lines are 6 is respectively 4000K, 3000K, 2000K, 1000K and 0K (water resistance can be ignored) for resistance value, represent 0%, 25%, 50%, 75% and 100% water level respectively, thereby can have the utmost point to measure, the measuring principle of resistance electrode formula liquid level sensor is a known technology, does not add tired stating at this.
The quantity that should be noted that build-out resistor 5, electrode slice 3 and conductive electrode cover 4 in the present embodiment can increase according to actual needs, can effectively improve precision.
Shown in Fig. 4,5,6, the described resistance electrode formula of present embodiment liquid level sensor, this resistance electrode formula liquid level sensor also comprises and is positioned at the balancing weight 8 of below as different from Example 1, this balancing weight 8 links to each other with the spring 7 that is positioned at bottom, balancing weight 8 is provided with pod apertures 17, pod apertures 17 runs through balancing weight 8 can play good guide functions, can prevent ponding generation false sense should, wherein balancing weight 8 is a stainless steel.Be connected with the spring housing 18 of conduction on the described insulation sleeve 9, this spring housing 18 is connected with spring 7, all spring housings 18 form a conductivity integral with spring 7, and be electrically connected with described initial end, when concentric line 15 or public electrode 16 break down, this conductivity integral can be used as common port usefulness, guarantees the normal use of sensor.
As shown in Figure 7, the described resistance electrode formula of present embodiment liquid level sensor, this resistance electrode formula liquid level sensor also comprises temperature sensor 10 as different from Example 2, this temperature sensor 10 is arranged in the spring 7, lead to thermometric line 11 on it, thereby make liquid level, temperature integral type, increase result of use, save cost.
As shown in Figure 8, the described resistance electrode formula of present embodiment liquid level sensor, described as different from Example 1 concentric line 15 by main core 12, twist lead 13 outward and insulating coating 14 is formed, twist lead 13 outward and be wrapped in main core 12 outsides, insulating coating 14 is with its coating.Wherein main core 12 is a stainless steel, has enough intensity, twists the copper cash that lead 13 uses the good conductive effect outward, and the copper cash weldability is better.
Claims (10)
1. resistance electrode formula liquid level sensor; it mainly comprises the resistance circuit plate; the circuit board protective sleeve; electrode slice and conductive electrode cover; the resistance circuit plate is provided with the build-out resistor of fixed qty; build-out resistor is connected mutually and the initial end and the end that form after series connection lead to slotted line respectively; initial end links to each other with public electrode by concentric line simultaneously; the conductive electrode cover is hollow structure; each electrode slice links to each other by lead with corresponding build-out resistor with it; described public electrode is positioned at the electrode slice below; it is characterized in that described conductive electrode cover is spaced apart; electrode slice is fixedly installed on corresponding conductive electrode and puts; between the conductive electrode cover, be provided with spring; conductive electrode puts and is connected with insulation sleeve, and by insulation sleeve and spring electrical isolation, described lead is located in conductive electrode cover and the spring.
2. resistance electrode formula liquid level sensor according to claim 1 is characterized in that also comprising being positioned at the balancing weight of below that this balancing weight links to each other with the spring or the conductive electrode cover that are positioned at bottom.
3. resistance electrode formula liquid level sensor according to claim 2 is characterized in that described balancing weight is provided with pod apertures.
4. according to claim 1 or 2 or 3 described resistance electrode formula liquid level sensors, it is characterized in that being connected with on the described insulation sleeve spring housing of conduction, this spring housing is connected with spring, and all spring housings and spring form a conductivity integral, and is electrically connected with described initial end.
5. according to claim 1 or 2 or 3 described resistance electrode formula liquid level sensors, it is characterized in that also comprising temperature sensor, this temperature sensor is arranged in spring or conductive electrode cover or the insulation sleeve, leads to the thermometric line on it.
6. resistance electrode formula liquid level sensor according to claim 4 is characterized in that also comprising temperature sensor, and this temperature sensor is arranged in spring or conductive electrode cover or the insulation sleeve, leads to the thermometric line on it.
7. according to claim 1 or 2 or 3 described resistance electrode formula liquid level sensors, it is characterized in that the circuit board protective sleeve is positioned at the electrode slice top, and link to each other with spring that is positioned at the top or conductive electrode cover.
8. resistance electrode formula liquid level sensor according to claim 6 is characterized in that the circuit board protective sleeve is positioned at the electrode slice top, and links to each other with spring that is positioned at the top or conductive electrode cover.
9. resistance electrode formula liquid level sensor according to claim 7, it is characterized in that described concentric line by main core, twist lead outward and insulating coating is formed, twist lead outward and be wrapped in the main core outside, insulating coating coats it.
10. resistance electrode formula liquid level sensor according to claim 8, it is characterized in that described concentric line by main core, twist lead outward and insulating coating is formed, twist lead outward and be wrapped in the main core outside, insulating coating coats it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203014107U CN201653495U (en) | 2010-01-25 | 2010-01-25 | Resistance electrode type liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203014107U CN201653495U (en) | 2010-01-25 | 2010-01-25 | Resistance electrode type liquid level sensor |
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| Publication Number | Publication Date |
|---|---|
| CN201653495U true CN201653495U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203014107U Expired - Fee Related CN201653495U (en) | 2010-01-25 | 2010-01-25 | Resistance electrode type liquid level sensor |
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| CN (1) | CN201653495U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104156010A (en) * | 2014-07-22 | 2014-11-19 | 广东新功电器有限公司 | Kettle water level control device, water level control method and dry-burning resistant control method |
| CN104165575A (en) * | 2014-07-24 | 2014-11-26 | 河海大学 | Resistance type flexibility measuring apparatus |
| CN104165575B (en) * | 2014-07-24 | 2017-01-04 | 河海大学 | A kind of resistance-type deflection measuring apparatus |
| CN109556655A (en) * | 2018-11-19 | 2019-04-02 | 河北省机电体化中试基地 | A kind of regenerative heat-exchange system temperature and liquid level integral type acquire pick-up device |
-
2010
- 2010-01-25 CN CN2010203014107U patent/CN201653495U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104156010A (en) * | 2014-07-22 | 2014-11-19 | 广东新功电器有限公司 | Kettle water level control device, water level control method and dry-burning resistant control method |
| CN104165575A (en) * | 2014-07-24 | 2014-11-26 | 河海大学 | Resistance type flexibility measuring apparatus |
| CN104165575B (en) * | 2014-07-24 | 2017-01-04 | 河海大学 | A kind of resistance-type deflection measuring apparatus |
| CN109556655A (en) * | 2018-11-19 | 2019-04-02 | 河北省机电体化中试基地 | A kind of regenerative heat-exchange system temperature and liquid level integral type acquire pick-up device |
| CN109556655B (en) * | 2018-11-19 | 2021-04-27 | 河北省机电一体化中试基地 | Temperature and liquid level integrated acquisition and transmission device of heat accumulating type heat exchange system |
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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: 20101124 Termination date: 20140125 |