CN1328249A - Low-temp water level sensor - Google Patents
Low-temp water level sensor Download PDFInfo
- Publication number
- CN1328249A CN1328249A CN 01122573 CN01122573A CN1328249A CN 1328249 A CN1328249 A CN 1328249A CN 01122573 CN01122573 CN 01122573 CN 01122573 A CN01122573 A CN 01122573A CN 1328249 A CN1328249 A CN 1328249A
- Authority
- CN
- China
- Prior art keywords
- hollow cylinder
- water level
- cylinder body
- body case
- endoporus
- 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.)
- Granted
Links
Images
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A low-temp water level sensor used under ice is composed of cylindrical casing, heat insulaing layer, temp measuring circuit, heater, temp controller, built-in induction-type digital level sensor, and transducer, and features that in the freezing condition, said built-in induction-type digital lever sensor with several induction elements is used to measure water level and the measured level signal is sent via cable to external transducer. Its advantages are high precision and convenient application.
Description
The invention belongs to the test technique automatic field, particularly is the condensate tank of dehumidifier under a kind of freezing in the winter time environment, and can carry out subglacial has the sensor of pressing or not having the detection of setting-out position.
At present both at home and abroad technology and the product aspect water level measuring is a lot, but uses seldom when water has ice sheet under the low-temperature condition in the winter time.The water conservancy working person measures water level in the winter time, still continues to use classic method mostly, and each the detection all wants earlier ice sheet to be chiseled a hole, and then measures with water-level measuring post etc., and taking a lot of work requires great effort is unfavorable for robotization.In order to address this problem, through for many years both at home and abroad the colleague made various explorations and research.Our technology formerly found has by retrieval: induction type digital water level sensor of Shi Yonging and Jap.P. " a kind of level measurement device " G 01 F 23/30 Z 7143-2F at normal temperatures; it proposes a kind of profile is cylindrical tube; seal positioned vertical above in water; the ice sheet that the interior jar of tube is gone into its thickness ratio expectation of noncongeable oil is thicker; water can enter from the bottom of tube the tube; the face on the water because the different noncongeable oils of proportion float; can stop cold air contact water; water in the tube is not frozen; in tube, have under the situation of water; owing to have the protection noncongeable oil of cylindrical tube can not run off, and can in tube, move by the variation easy on and off along with water level.A bar is vertically adorned in the centre in the tube, the water level signal pick-up unit places and is enclosed within one on the bar movably on the right cylinder, move up and down with the variation of antifreeze oil reservoir with water level, water level signal is drawn by the cylindrical tube top, and installs output 0-10V DC voltage outward by tube.Yet this device shortcoming is a lot of, only be adapted at using in the desirable pure water, in natural water in various degree contain impurity and drift, if these impurity and drift enter will be wrapped on the bar inevitably or stop up the movably right cylinder that is enclosed within on the bar and the glade plane space between the bar in the tube, to cause the movably right cylinder on bar not move, i.e. sensed water level that can't be correct.To the lower edge that is lower than tube, the noncongeable oil in the tube will run off as SEA LEVEL VARIATION, not have noncongeable oil in the tube after water level goes up again, and water will freeze in tube, also sensed water level that can't be correct.
The purpose of this invention is to provide a kind of low-temp water level sensor, it can carry out level measuring under the freezing in the winter time effectively situation, and water level signal can be converted to electric signal realization teletransmission.
Low-temp water level sensor of the present invention is characterized in that, it is mainly by a hollow cylinder body case, heat-insulation layer, temperature measurement circuit, well heater, temperature controller, built-in sensitive formula digital water level sensor, several parts of transmitter are formed, the hollow cylinder housing parts is by hollow cylinder body case 1, oblate cylindricality end cap 2, air hole 3, left side connection terminal 4, right connection terminal 9, endoporus 6 is formed, the shell of hollow cylinder body case 1 is a pipe, endoporus 6 is pipes concentric with hollow cylinder body case 1, oblate cylindricality end cap 2 is positioned at the top of hollow cylinder body case 1, one air hole 3 that is communicated with the endoporus 6 that is positioned at hollow cylinder body case 1 centre is arranged in the side of oblate cylindricality end cap 2, fill insulant material 12 constitutes heat-insulation layer between endoporus 6 and hollow cylinder body case 1, well heater 7 is adding glass fabric 21 by heating wire 19 wound in parallel on the micarex 20 and between the corrosion resistant plate 16, tighten together with CARBURIZING FURNACE FOR STAINLESS FASTENER 18, temperature probe 17 is close to corrosion resistant plate 16 and is installed, heating wire 19, temperature probe 17, left connection terminal 4 with waterproof sealing ability, transmission cable 5 connects temperature controller 23 through lead 24 successively, by temperature measurement circuit 25, display circuit 26, digital display gauge outfit 22, driving circuit 27, relay 28, heating power supply 29 constitutes temperature controller 23, the circuit board 10 of built-in sensitive formula digital water level sensor, uniformly-spaced be arranged in the induction unit 11 on the inner hole wall, ground plate 13, the right connection terminal 9 that the waterproof sealing ability is arranged, water level signal transmission cable 8 is connected with transmitter 15 through lead 14 successively.
Low-temp water level sensor of the present invention, owing to adopt such scheme, the anti-freeze method that adopts built-in sensitive formula digital water level sensor and water to be measured is heated, the deficiencies in the prior art have been overcome, carry out level measuring in the winter time under the low temperature environment, and in the water that contains impurity or dirt, also can carry out level measuring like clockwork, simple in structure easy to install.
Description of drawings:
Fig. 1 is the one-piece construction figure and the partial sectional view of most preferred embodiment of the present invention.
Number in the figure is: the right connection terminal of the left connection terminal of (1) shell (2) end cap (3) air hole (4) (5) transmission cable (6) endoporus (7) well heater (8) water level signal transmission cable (9) (10) circuit board (11) induction unit (12) insulation material (13) ground plate (14) lead
Fig. 2 is thermometric heater section mount structure figure.
Number in the figure is: (16) corrosion resistant plate (17) temperature probe (18) CARBURIZING FURNACE FOR STAINLESS FASTENER (19) heating wire (20) micarex (21) glass fabric (22) digital display gauge outfit (23) temperature controller (24) lead
Fig. 3 is a thermometric calandria part electrical schematic diagram.
Number in the figure is: (25) temperature measurement circuit (26) display circuit (27) driving circuit (28) relay (29) heating power supply
Fig. 4 is built-in level sensor structural drawing.
Number in the figure is: (15) transmitter
Provide most preferred embodiment below in conjunction with accompanying drawing.
In Fig. 1, by shell 1, end cap 2, air hole 3, endoporus 6, and between shell 1 and endoporus 6 fill insulant material 12 constitute heat-insulation layer, the PVC plastic tube that shell 1 usefulness diameter is 320 millimeters is made, the PVC plastic tube that endoporus 6 usefulness diameters are 90 millimeters is made and is concentric with shell 1, heat-insulation layer between shell 1 and the endoporus 6 stops that ambient temperature changes endoporus 6 Temperature Influence, oblate cylindricality end cap 2 adopts the PVC plastics to make with the air hole 3 that is positioned at oblate cylindricality end cap 2 sides, the water vapor that produces in the endoporus 6 is discharged by air hole 3, and water can move up and down in endoporus 6.Constitute built-in sensitive formula digital water level sensor by induction unit 11 and the ground plate 13 made with stainless steel with circuit board 10, when the induction unit 11 of water surface correspondence is flooded in liter waterborne or decline, induction unit 11 is converted to corresponding electric signal by circuit board 10 with water level value, through lead 14, have the right connection terminal 9 of waterproof sealing ability, water level signal transmission cable 8 to send.In the position on the lower side of endoporus 6 inner hole wall opened as shown in Figure 1 one with the same hole of well heater 7 size dimensions, install in well heater 7 embedded holes.
In Fig. 2, heating wire 19 wound in parallel are adding glass fabric 21 insulation on the micarex 20 and between the corrosion resistant plate 16, tightening together to become one with CARBURIZING FURNACE FOR STAINLESS FASTENER 18 constitutes well heater 7, and heating wire 19 connects temperature controllers 23 through lead 24, the left connection terminal 4 that the waterproof sealing ability is arranged, transmission cable 5.Temperature probe 17 adopts the thermistor of positive temperature coefficient (PTC), sticks with glue between corrosion resistant plate 16 and glass fabric 21, passes insulation material 12 by lead 24 and connects temperature controller 23 through left connection terminal 4, transmission cable 5.
In Fig. 3,, temperature measurement circuit 25 detects water temperature in the endoporus 6 when passing through temperature probe 17, when being lower than 3C, starting driving circuit 27 makes relay 28 adhesives by heating wire 19 power supplies of heating power supply 29 to well heater 7, the heat that heating wire 19 sends is by the heating of the water in 16 pairs of endoporus 6 of corrosion resistant plate, when water temperature is higher than 3 ℃, make relay 28 disconnect heating power supply 29 by driving circuit 27, heating wire 19 outages of well heater 7, no longer the water of endoporus 6 is heated, so just guaranteed that the water in the endoporus 6 does not freeze.By the water temperature signal of temperature measurement circuit 25, send display circuit 26 simultaneously, show current water temperature value for digital display gauge outfit 22 by temperature probe 17 detection endoporus 6.
It in Fig. 4 the structural drawing of built-in level sensor.Several induction units 11 of built-in sensitive formula digital water level sensor uniformly-spaced are arranged on the inner hole wall, be connected with circuit board 10, lead 14 connecting circuit plates 10 and right connection terminal 9, water level signal transmission cable 8 connects right connection terminal 9 to transmitter 15, and transmitter 15 is converted to DC1-5V or DC4-20mA with water level signal.
Claims (1)
1, a kind of low-temp water level sensor, it is characterized in that, it is mainly by a hollow cylinder body case, heat-insulation layer, temperature measurement circuit, well heater, temperature controller, built-in level sensor, several parts of transmitter are formed, the hollow cylinder housing parts is by hollow cylinder body case (1), oblate cylindricality end cap (2), air hole (3), left side connection terminal (4), right connection terminal (9), endoporus (6) is formed, the shell of hollow cylinder body case (1) is a pipe, endoporus (6) be one with the concentric pipe of hollow cylinder body case (1), oblate cylindricality end cap (2) is positioned at the top of hollow cylinder body case (1), one air hole (3) that is communicated with the endoporus (6) that is positioned at hollow cylinder body case (1) centre is arranged in the side of oblate cylindricality end cap (2), fill insulant material (12) constitutes heat-insulation layer between endoporus (6) and hollow cylinder body case (1), well heater (7) upward and between the corrosion resistant plate (16) adds glass fabric (21) by heating wire (19) wound in parallel at micarex (20), tighten together with CARBURIZING FURNACE FOR STAINLESS FASTENER (18), temperature probe (17) is close to corrosion resistant plate (16) and is installed, heating wire (19), temperature probe (17), left connection terminal (4) with waterproof sealing ability, transmission cable (5) connects temperature controller (23) through lead (24) successively, by temperature measurement circuit (25), display circuit (26), digital display gauge outfit (22), driving circuit (27), relay (28), heating power supply (29) constitutes temperature controller (23), the circuit board (10) of built-in sensitive formula digital water level sensor, uniformly-spaced be arranged in the induction unit (11) on the inner hole wall, ground plate (13), the right connection terminal (9) that the waterproof sealing ability is arranged, water level signal transmission cable (8) is connected with transmitter (15) through lead (14) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011225734A CN1140774C (en) | 2001-07-12 | 2001-07-12 | Low-temp water level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011225734A CN1140774C (en) | 2001-07-12 | 2001-07-12 | Low-temp water level sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1328249A true CN1328249A (en) | 2001-12-26 |
| CN1140774C CN1140774C (en) | 2004-03-03 |
Family
ID=4664801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011225734A Expired - Fee Related CN1140774C (en) | 2001-07-12 | 2001-07-12 | Low-temp water level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1140774C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347525C (en) * | 2004-02-26 | 2007-11-07 | 太原理工大学 | Ice water level sensor and its detecting method |
| CN103234448A (en) * | 2013-04-25 | 2013-08-07 | 大连海事大学 | System and method for detecting thickness of sea surface oil slick |
| CN107063381A (en) * | 2017-02-28 | 2017-08-18 | 中国十七冶集团有限公司 | A kind of severe cold area ultra-large type piping lane groove water table measure method |
| CN108088527A (en) * | 2016-11-23 | 2018-05-29 | 本钢板材股份有限公司 | A kind of cold and hot well alarm system of environmental protection |
| CN109738038A (en) * | 2019-03-12 | 2019-05-10 | 王铭 | A kind of hydrology evaporating dish and evaporative capacity measuring apparatus |
| CN114225289A (en) * | 2021-12-17 | 2022-03-25 | 梅英亭 | Anti-freezing detection device for fire hydrant and fire water crane |
| CN114279514A (en) * | 2021-12-28 | 2022-04-05 | 安徽省锐凌计量器制造有限公司 | Low temperature resistant flow transmitter and turbine flowmeter |
-
2001
- 2001-07-12 CN CNB011225734A patent/CN1140774C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347525C (en) * | 2004-02-26 | 2007-11-07 | 太原理工大学 | Ice water level sensor and its detecting method |
| CN103234448A (en) * | 2013-04-25 | 2013-08-07 | 大连海事大学 | System and method for detecting thickness of sea surface oil slick |
| CN103234448B (en) * | 2013-04-25 | 2016-03-02 | 大连海事大学 | A kind of slick thickness detecting system and detection method |
| CN108088527A (en) * | 2016-11-23 | 2018-05-29 | 本钢板材股份有限公司 | A kind of cold and hot well alarm system of environmental protection |
| CN107063381A (en) * | 2017-02-28 | 2017-08-18 | 中国十七冶集团有限公司 | A kind of severe cold area ultra-large type piping lane groove water table measure method |
| CN109738038A (en) * | 2019-03-12 | 2019-05-10 | 王铭 | A kind of hydrology evaporating dish and evaporative capacity measuring apparatus |
| CN114225289A (en) * | 2021-12-17 | 2022-03-25 | 梅英亭 | Anti-freezing detection device for fire hydrant and fire water crane |
| CN114279514A (en) * | 2021-12-28 | 2022-04-05 | 安徽省锐凌计量器制造有限公司 | Low temperature resistant flow transmitter and turbine flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1140774C (en) | 2004-03-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1140774C (en) | Low-temp water level sensor | |
| CN105783838A (en) | Frozen soil depth sensor | |
| CN200982879Y (en) | Water level and temperature detection device of solar water heater | |
| CN201096545Y (en) | Solar water heater temperature- liquid level sensor | |
| CN201037775Y (en) | Solar energy water-heater water temperature water level sensor | |
| CN201289245Y (en) | External self control liquid level and liquid temperature sensor | |
| CN205607365U (en) | Frozen soil depth sensor with bus driving force intensifier circuit | |
| CN213397229U (en) | Wireless teletransmission valve accuse water gauge with waterproof function of preventing frostbite | |
| CN210720782U (en) | Rain and snow meter based on multiple sensors | |
| CN209978990U (en) | Anti-freezing corrugated pipe pressure gauge | |
| CN209801766U (en) | 10kV water and electricity isolated resistance heating's ordinary pressure electric water boiler | |
| CN218885259U (en) | From area heating pressure transmitter | |
| CN2589897Y (en) | Water level and temperature sensor for solar water heater | |
| CN201488358U (en) | Test device of solar water heater | |
| CN201875977U (en) | Measuring device for inside and outside combination of water temperature and water level of solar water heater | |
| CN101713682A (en) | External sensing and measuring device for water level and water temperature of solar water heater | |
| CN209559310U (en) | A kind of float level meter | |
| CN2531318Y (en) | Solar water heater | |
| CN209623879U (en) | A kind of dismountable platinum sensor | |
| CN100449331C (en) | Grid shaped highly sensitive detector for rain and snow | |
| CN219552317U (en) | Heat conductivity coefficient measuring device based on semiconductor refrigeration technology | |
| CN2773645Y (en) | Closed water-temperature and water-level sensor detector | |
| CN212903310U (en) | Humiture automatic alarm device | |
| CN203463304U (en) | Solar water heater water-saving pump with function of water level detection | |
| CN221376889U (en) | Novel laminating formula temperature detect device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |