CN2039031U - Rainfall gauge - Google Patents
Rainfall gauge Download PDFInfo
- Publication number
- CN2039031U CN2039031U CN88221003U CN88221003U CN2039031U CN 2039031 U CN2039031 U CN 2039031U CN 88221003 U CN88221003 U CN 88221003U CN 88221003 U CN88221003 U CN 88221003U CN 2039031 U CN2039031 U CN 2039031U
- Authority
- CN
- China
- Prior art keywords
- glass tube
- rainfall
- water drum
- precipitation
- draining
- 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 - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model provides a rainfall gauge, comprising a capacitance sensor and a measuring recorder. When the rain falls, a rainfall-capacitance converter converts the height of the conclusion to capacitance, the capacitance change of the rainfall-capacitance converter is measured through a measuring circuit, the rainfall can be concluded and recorded through the recorder continuously, when the rainfall reaches the draining height, the water is automatically drained. The utility model has the advantages of simple structure, high precision, and sensitive reaction.
Description
The utility model is to belong to the instrument that is used to measure precipitation on the meteorology.
The siphon rainfall recorder that uses after water drum is held in the rainwater inflow, drives the penholder record by float at present, and siphon drainage when quantity of precipitation reaches 10 millimeters has the siphon error in the drainage procedure, and especially the big time error of rainfall increases, and can not remote measurement.
The purpose of this utility model is to provide that a kind of measuring accuracy is higher, maintenance, rainfall measurement device easy to use, this device replaces float with electrode, the measuring error that can eliminate above-mentioned udometric siphon error and cause with the variation of precipitation intensity, and can automatic telemetering.
Precipitation measurement mechanism of the present utility model is made up of capacitive transducer and survey record device, and two parts are connected by polycore cable.
Capacitive transducer by hold the mouth of a river (1), funnel (2), go up valve (3), cistern (4), draining contact pilotage (5), rainfall one capacitive transducer, trace (8), lower valve (9), drain vessel (10), valve positioner (11), shell (12), insulating top cover (13) form.Rainfall-capacitive transducer is formed by holding the glass tube (6) that water drum (7) and inwall scribble silver layer, the silver layer that has constituted with the glass tube inwall is the interior utmost point, with glass tube this as dielectric, be the outer utmost point to hold water drum (7) inwall during no precipitation, the contact area with rainwater and glass tube during precipitation is the rainfall-capacitive transducer of the outer utmost point.The survey record device is made up of with the recording clock register metering circuit and general meteorology.The principle of this precipitation measurement mechanism is: hold the precipitation accepted at the mouth of a river (1) and enter through funnel (2) and cistern (4) and hold water drum (7), at this moment the electric capacity of rainfall-capacitive transducer changes, and holds precipitation and rainfall-capacitive transducer capacitor C that water drum (7) is accepted
hBetween the pass be:
C
h＝ (2πεh)/(In(D
2- D
1) ) －C
o
C
oElectric capacity when not having precipitation for rainfall-capacitive transducer; ε is the glass tube specific inductive capacity; D
1With D
2Be respectively the inside and outside footpath of glass tube, above-mentioned four all is constant, rainfall-capacitive transducer C
hOnly with holding the quantity of precipitation that water drum (7) water level h(promptly accepts) change, and both are directly proportional.Therefore measure the capacitance variations of rainfall-capacitive transducer by metering circuit, can measure quantity of precipitation, METHOD FOR CONTINUOUS DETERMINATION can record the variation and the semi-invariant of quantity of precipitation.The capacitance variations of being measured by metering circuit (quantity of precipitation variation) is converted to the variation of electric weight V after detection, after power amplifier amplified, the driving moment motor drove the writing point of recording clock to bridge circuit more after testing.When quantity of precipitation is big (one-time continuous quantity of precipitation or accumulative rainfall amount are greater than 10 millimeters), holding the precipitation water level that water drum (7) accepts constantly raises, when rising to 160 millimeters (actual quantity of precipitation is 10 millimeters), hold the interior water surface of water drum (7) and draining contact pilotage (5) conducting, open lower valve (9) by valve positioner (11) and discharge precipitation through drain vessel (10), this simultaneously valve positioner (11) close and close valve (3) and continue to have precipitation to enter when preventing to hold water drum (7) to be discharged to produce measuring error because of draining.Delay time after 10 seconds, valve positioner (11) is closed lower valve (9), open valve (3) simultaneously and accept precipitation and enter heavily again and hold water drum (7), meanwhile the make pulse generator is sent pulse to the circuit digital display of falling into a trap and is shown part, shows the draining number of times by the counting display part.
Above-mentioned precipitation measurement mechanism measuring principle is simple, clear and definite, and each key position is all electronic component, does not have mechanical parts, so stable performance, measuring accuracy is higher, when particularly quantity of precipitation is big, has more and measures accurate advantage.Its structure member is few simultaneously, and water inlet and draining are handled simple and easy to do, need not more transmissions or additional device.
Fig. 1 is the fundamental diagram of precipitation measurement mechanism.Among the figure: hold the mouth of a river (1), funnel (2), go up valve (3), cistern (4), draining contact pilotage (5), glass tube (6), hold water drum (7), trace (8), lower valve (9), drain vessel (10), valve positioner (11), shell (12), insulating top cover (13).
Fig. 2 is rainfall-capacitive transducer.
Fig. 3 is metering circuit figure.
Provide a kind of embodiment of the present invention below, holding water drum (7) employing internal diameter is φ 50mm, the copper pipe of high 190mm is electroplated and is processed, put outside one through being φ 11mm the center in the tube, wall thickness is 0.5mm, length is the glass tube of 200mm (6), the upper end of glass tube is fixed on copper and holds on the insulating top cover of water drum (7) (13), the glass tube lower end is unsettled and hold water drum (7) end at a distance of 2mm, scribble silver layer on glass tube (6) inwall, be the interior utmost point with regard to the silver layer that has constituted with glass tube (6) inwall like this, this is the rainfall-capacitive transducer of the outer utmost point as dielectric with the contact area of holding water drum (7) inwall or rainwater and glass tube with glass tube, this device can reach the measuring accuracy 0.1mm that meteorological department requires with glass tube as dielectric, and it is reliable and stable, because in the various insulating material, 24 hours moisture-penetrabilitys having only glass are zero, have guaranteed that this glass tube long period of soaking is in rainwater and do not influence the stable of electric capacity.For glass tube skin after preventing draining glues water and influences electric capacity, the outer wall of glass tube scribbles uniform silicone oil thin layer simultaneously.
Draining contact pilotage (5) is fixed on the insulating top cover (13), and adopting diameter is the platinum wire of φ 0.8mm, and platinum wire is difficult for oxidation, and guaranteeing to hold interior the water level of water drum (7), to reach the actual quantity of precipitation of 160mm(be 10mm) time triggering valve positioner (11) reliability.
Cistern (3) volume is 47.8 milliliters, in order to accept the time-delay precipitation in 10 seconds, it is the storage that 21.0 milliliters of rainwater fall second in 4mm/ timesharing 10 that its capacity satisfies maximum rainfall intensity, extension below it (insulation) slowly rises from holding the water drum bottom in order to make rainwater, preventing that rainwater from directly falling into causes that spray splashes at the bottom of holding water drum, thereby guarantees the accuracy measured.
Funnel (2) plastics are made, and bell mouth place has gauze, prevent from that the grains of sand or insect from entering to hold water drum (7) and influence measuring accuracy.
Upper and lower valve (3), (9) adopt rubberite to make, and rubberite can make the Valve plug envelope not leak.Valve positioner (11) is made of electromagnet, spring, trace (8), and it is in order to protect rainfall-capacitive transducer that shell (13) adopts copper.
This device has been made model machine, tests in the use.
Claims (2)
1, a kind of measurement precipitation device has the mouth of a river of holding (1), holds water drum (7) and register, it is characterized in that:
(a). hold to hit exactly in the water drum (7) and put a glass tube (6), the upper end of glass tube is fixed on copper and holds on the interior insulating top cover (6) of water drum, the glass tube lower end is unsettled, scribbling silver layer on the glass tube inwall is the interior utmost point with regard to the silver layer that has constituted with the glass tube inwall like this, originally as dielectric, is the rainfall-capacitive transducer of the outer utmost point with the contact area of holding water drum inwall or rainwater and glass tube with glass tube.
(b). adopt glass tube (6) as insulating medium.
(c). the outer wall of glass tube (6) scribbles uniform silicone oil thin layer.
2, precipitation measurement mechanism according to claim 1 is characterized in that being fixed with on the insulating top cover (13) draining and touches meter (5), when precipitation reaches the draining height, holds the interior water surface of water drum (7) and draining and touches meter (5) conducting, just draining automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88221003U CN2039031U (en) | 1988-12-15 | 1988-12-15 | Rainfall gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88221003U CN2039031U (en) | 1988-12-15 | 1988-12-15 | Rainfall gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2039031U true CN2039031U (en) | 1989-06-07 |
Family
ID=4853112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88221003U Expired - Lifetime CN2039031U (en) | 1988-12-15 | 1988-12-15 | Rainfall gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2039031U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100494957C (en) * | 2005-12-14 | 2009-06-03 | 中国科学院遗传与发育生物学研究所 | Automatic sampling system for storm runoff in small watershed |
| CN104330839A (en) * | 2014-11-21 | 2015-02-04 | 成都蓝宇科维科技有限公司 | Self-gathering rainfall station |
| CN105116472A (en) * | 2015-08-18 | 2015-12-02 | 东南大学 | Pluviometer based on a water film thickness sensor |
| CN111351542A (en) * | 2020-03-19 | 2020-06-30 | 中国科学院华南植物园 | Axial rotation type automatic continuous water quantity measurer |
| CN112630866A (en) * | 2020-12-17 | 2021-04-09 | 山东省科学院海洋仪器仪表研究所 | Rainfall measuring device |
-
1988
- 1988-12-15 CN CN88221003U patent/CN2039031U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100494957C (en) * | 2005-12-14 | 2009-06-03 | 中国科学院遗传与发育生物学研究所 | Automatic sampling system for storm runoff in small watershed |
| CN104330839A (en) * | 2014-11-21 | 2015-02-04 | 成都蓝宇科维科技有限公司 | Self-gathering rainfall station |
| CN105116472A (en) * | 2015-08-18 | 2015-12-02 | 东南大学 | Pluviometer based on a water film thickness sensor |
| CN111351542A (en) * | 2020-03-19 | 2020-06-30 | 中国科学院华南植物园 | Axial rotation type automatic continuous water quantity measurer |
| CN112630866A (en) * | 2020-12-17 | 2021-04-09 | 山东省科学院海洋仪器仪表研究所 | Rainfall measuring device |
| CN112630866B (en) * | 2020-12-17 | 2023-05-09 | 山东省科学院海洋仪器仪表研究所 | Rainfall measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |