CN106768188A - A kind of simple water jacket furnace water level monitoring system - Google Patents
A kind of simple water jacket furnace water level monitoring system Download PDFInfo
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- CN106768188A CN106768188A CN201710116096.1A CN201710116096A CN106768188A CN 106768188 A CN106768188 A CN 106768188A CN 201710116096 A CN201710116096 A CN 201710116096A CN 106768188 A CN106768188 A CN 106768188A
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- ball float
- water jacket
- jacket furnace
- water level
- sleeve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention provides a kind of simple water jacket furnace water level monitoring system, including ball float cylinder, ball float frame and the sleeve that is arranged on the outside of ball float cylinder；Ball float cylinder includes the ball float cylinder of closed at both ends, is symmetrically arranged with for two communicating pipes on end positions ball float cylinder lateral wall.Beneficial effects of the present invention are：The present invention can real-time monitoring water jacket furnace water level and can remote alarms and automatically controlling add water, largely reduce the generation of water jacket furnace " dry combustion method " accident, so as to avoid the generation of the accidents such as fire, solidifying pipe, at the same have the advantages that low cost, it is easy for installation, be readily disassembled.
Description
Technical field
The present invention relates to water jacket furnace monitoring device, more particularly to a kind of simple water jacket furnace water level monitoring system.
Background technology
At present, Shengli Oil Field heavy oil block is mainly using Wellhead water-blending and the gathering and transportation technology of middle heating.Centre heating institute
The equipment for using is mainly simple water jacket furnace, is run because simple water jacket furnace is open, and water evaporation quantity is big, it is therefore desirable to patrol and examine people
Member regular visit add water, if patrolling and examining not in place or adding water not in time, exist and burn out water jacket, in addition oil circuit coil pipe risk.
Because the standardization of simple water jacket furnace, automaticity are relatively low in the range of current oil field, without shaping and low-cost
Water jacket furnace level monitoring and remote alerting device.
The content of the invention
It is an object of the invention to provide a kind of low cost, real-time monitoring water jacket furnace water level and remote alarms can be capable of
Simple water jacket furnace water level monitoring system.
The present invention is realized by following measure：A kind of simple water jacket furnace water level monitoring system, including water level shows
Warning device, the water level displaying alarm includes ball float cylinder, ball float frame and the sleeve being arranged on the outside of the ball float cylinder；Institute
Stating ball float cylinder includes the ball float cylinder of closed at both ends, and two companies are symmetrically arranged with ball float cylinder lateral wall described in end positions
Siphunculus；Two communicating pipes are fixedly connected by flange with the water jacket furnace；Set and upper and lower two communicating pipe both ensure that water
The connection of body, while in turn ensure that ball float cylinder is equal with the air pressure in water jacket furnace or basically identical；
The ball float frame includes ball float, support body and annular display board, and the support body includes being arranged on the branch of the ball float upper surface
Strut, the post upper is evenly distributed with several inverted L shape connecting rods, and it is aobvious that the connecting rod lower end is fixed on the annular
Show the upper surface of plate；The ball float central horizontal face and the central horizontal face or upper surface of the annular display board or lower surface weight
Close；The annular display board outer surface is provided with eye-catching figure layer, is easy to observe the position of waterline.
The sleeve includes upper end closed, the outer sleeve of open at its lower end, the lower surface of the outer sleeve top surface be provided with
The outer sleeve is coaxial, the inner sleeve of open at its lower end, annular is formed between outer sleeve side wall and inner sleeve side wall empty
Chamber, the outer sleeve end face center is provided with support bar perforation, between outer sleeve side wall and inner sleeve side wall
The perforation of several connecting rods is provided with the outer sleeve top surface；U is provided with down on sleeve described in the communicating pipe position
Type breach；
The ball float is located in the ball float cylinder, and the annular display board is located between the outer sleeve and the inner sleeve
In toroidal cavity；The outer sleeve is that transparent material and outer surface are provided with graduation mark, or the outer sleeve and are provided with visually
Window, graduation mark is provided with the visual window.
It is provided with ball float cylinder described in the upper surface of the communicating pipe of lower section and is coordinated with the annular display board
The lower limiting board for using, the lower limiting board upper surface sets contact switch A, the contact switch A and an alarm and institute
State the magnetic valve connection of water jacket furnace supply channel；The lower limiting board is located at the inverted U gap position, the contact switch A
In the toroidal cavity.
It is provided with ball float cylinder described in the lower surface of the communicating pipe of top and is coordinated with the annular display board
The upper limit plate for using, the upper limit plate lower surface setting contact switch B, the contact switch B is supplied with the water jacket furnace
Magnetic valve connection in water lines；The upper limit plate is located at the surface of the lower limiting board, and the contact switch B is located at institute
State in toroidal cavity.Wherein, the connecting line of contact switch A and contact switch B is by lower limiting board or the inside of upper limit plate
Draw, and the inverted U gap position extraction by inner sleeve and the other elements such as circuit such as power supply, alarm or magnetic valve company
Connect.
The upper limit plate or the lower limiting board include integrally formed arc fixed part and are arranged on the arc
Arc-shaped limit portion in the middle part of fixed part outer surface, the arc fixed part both sides are symmetrically arranged with screw, the arc fixed part
It is fixed on the ball float cylinder by through the screw of the screw, the appearance radius surface in the arc-shaped limit portion is equal to outside described
The radius of sleeve interior surface；The contact switch A or described contact switch B is arranged in the arc-shaped limit portion.
The ball float barrel outer surface is evenly arranged with that several bar shaped limit convexes are stupefied, and the inner sleeve inner surface setting has
Several it is stupefied with the bar shaped limit convex with the use of and bottom insertion bar shaped limited impression.
The monitoring device also includes the upper bush that is connected with the sleeve threaded upper ends, the upper bush upper end closed,
Open at its lower end.
Wherein, the water level displaying alarm also includes control circuit, and the control circuit includes PNP type triode
Q2, NPN type triode Q1, the colelctor electrode and voltage stabilizing chip of NPN type triode Q1 and relay KM1, the PNP triode Q2
The mu balanced circuit of LM7805CC+5V in series, for being powered for PLC；The base stage of the PNP triode Q2 is by being sequentially connected
Electromagnetic relay KM1 coil and alarm connect and compose alarm circuit with the colelctor electrode of the NPN type triode Q3, together
When, the base stage of the PNP triode Q2 is also by contact switch SB1 in parallel（Get an electric shock switch B）With contact switch SB2（I.e.
Get an electric shock switch A）Base stage with the NPN type triode Q1 is connected, and the colelctor electrode connection PLC's of the NPN type triode Q1 is defeated
Inbound port IO1, the PLC output ports IO2 are connected with the base stage of the NPN type triode Q3, and the relay KM1 is hilted broadsword
Double-throw relay, one of which relay contact is connected with magnetic valve, and another group relay contact is connected with the switch SB2 that gets an electric shock；
The colelctor electrode of the PNP triode Q2 is connected with+9V power supplys；The single-chip microcomputer modelSTM32F103C8T6；Open the contact
Pass SB1 is normally opened contact, presses closure and unclamps disconnection, and the contact switch SB2 is normally-closed contact, presses disconnection and unclamps closure.
The workflow of the control circuit is as follows：
A, when contact switch SB1 is pressed, triode Q2 and triode Q1 are turned on, and voltage stabilizing chip output 5V voltages are single-chip microcomputer
Power supply, on single-chip microcomputer after electricity, first carries out I/O port initialization, and IO1 is set into input state, enables internal pull-up, and IO2 is set to output
State, exports high level, and now Q2, Q3 are both turned on, the coil conducting of relay KM1, alarm equipment alarm, while relay KM1
Two groups of closings of contact, solenoid valves, filling pipe starts water filling；
B, when contact switch SB2 is pressed, contact switch SB2 disconnects, and the IO2 of PLC output low level, Q3, Q2 are not turned on, after
Electrical equipment KM1 coil blackouts, two groups of contacts disconnect, and magnetic valve power-off, filling pipe stops water filling, now voltage stabilizing chip input voltage
Almost 0, single-chip microcomputer is stopped, and system is closed;
C, when contact switch SB1 is pressed again, repeat the above steps.
Water level monitoring system of the invention also includes remote transmission warning device, and remote transmission warning device includes and water level
The PLC of the alarm circuit output end connection of displaying alarm, PLC connection GPRS communication modules, can by GPRS communication modules
Whether water jacket furnace water level is in alarm condition and whether the information of alarm condition is continuously in by the form of SMS
Issue monitoring personnel；Wherein the PLC of remote transmission warning device can beSTM32F103C8T6, or mitsubishi FX2N.Ginseng
See Figure 10, real-time monitoring water level conditions and automatically controlling are added water remote transmission warning device at the scene, and low water level is reached every time to be needed
The alarm of water level displaying alarm is informed to patrol officer's mobile phone alarm by remote transmission warning device and needed simultaneously when adding water
Add water, if discontinuously being alarmed in certain hour, illustrate automatic watering success, if continuing mobile phone alarm in the short time, patrol and examine
Personnel need site inspection.Patrol officer's mobile phone or handheld terminal have record and store function, and water jacket furnace can be added water
The data such as number of times and time interval carry out statistical analysis.
Beneficial effects of the present invention are：The present invention can real-time monitoring water jacket furnace water level and can remote alarms and automatically control plus
Water, largely reduces the generation of water jacket furnace " dry combustion method " accident, so as to avoid the generation of the accidents such as fire, solidifying pipe, while
Have the advantages that low cost, it is easy for installation, be readily disassembled.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is to save the structural representation of upper bush in the embodiment of the present invention.
Fig. 3 is the structural representation of ball float cylinder in the embodiment of the present invention.
Fig. 4 is the structural representation of ball float frame in the embodiment of the present invention.
Fig. 5 is the structural representation of embodiment of the present invention middle sleeve.
Upward view when Fig. 6 is embodiment of the present invention middle sleeve use state.
Top view when Fig. 7 is embodiment of the present invention middle sleeve use state.
Fig. 8 is the structural representation that embodiment of the present invention middle sleeve coordinates with ball float.
Fig. 9 is the structural representation of embodiment of the present invention lower limit position plate.
Figure 10 is the circuit diagram of control circuit in the embodiment of the present invention.
Figure 11 is the structured flowchart of monitoring system in the embodiment of the present invention.
Wherein, reference is：1st, upper bush；2nd, sleeve；201st, outer sleeve；202nd, inner sleeve；203rd, bar shaped is spacing recessed
Groove；204th, inverted U breach；205th, support bar perforation；206th, connecting rod perforation；3rd, ball float cylinder；301st, base；302nd, ball float cylinder
Body；303rd, lower communicating tube；304th, upper communicating pipe；305th, bar shaped limit convex is stupefied；306th, lower limiting board；307th, arc fixed part；
308th, arc-shaped limit portion；309th, screw；310th, contact switch A；4th, ball float frame；401st, ball float；402nd, support bar；403rd, connect
Bar；404th, annular display board.
Specific embodiment
For the technical characterstic for illustrating this programme can be understood, below by specific embodiment, this programme is illustrated.
Referring to Fig. 1 and Fig. 2, the present invention is a kind of simple water jacket furnace water level monitoring system, including ball float cylinder 3, ball float frame 4
With the sleeve 2 for being arranged on the outside of ball float cylinder 3；Referring to Fig. 3, ball float cylinder 3 includes base 301 and is arranged on base 301 and two ends
The ball float cylinder 302 of closing, was symmetrically arranged with for two communicating pipes on the side wall of end positions ball float cylinder 302；Two connections
Pipe is fixedly connected by flange with water jacket furnace；Upper and lower two communicating pipe is set（Upper communicating pipe 304 and lower communicating tube 303）Both ensured
The connection of water body, while in turn ensure that ball float cylinder 3 is equal with the air pressure in water jacket furnace or basically identical.
Referring to Fig. 4, ball float frame 4 includes ball float 401, support body and annular display board 404, and support body includes being arranged on ball float 401
The support bar 402 of upper surface, the upper end of support bar 402 is evenly distributed with several inverted L shape connecting rods 403, and the lower end of connecting rod 403 is consolidated
It is scheduled on the upper surface of annular display board 404；The central horizontal face of ball float 401 and the central horizontal face or upper end of annular display board 404
Face or lower surface overlap；The outer surface of annular display board 404 is provided with eye-catching figure layer, is easy to observe the position of waterline；Wherein, float
The shape of ball 401 is not limited only to spherical, can be also hollow tubbiness etc., disclosure satisfy that floating；Support body be formed in one and
Quality is small, and ball float 3 sizes of cylinder disclosure satisfy that ball float frame 4 is swum on the water surface of ball float cylinder 3；The material of ball float cylinder 3 and ball float 401
Certain heat-resisting quantity is respectively provided with, the water temperature in water jacket furnace is up to 90 DEG C or so.
Referring to Fig. 5, Fig. 6 and Fig. 7, sleeve 2 includes upper end closed, the outer sleeve 201 of open at its lower end, the top surface of outer sleeve 201
Lower surface be provided with coaxial with outer sleeve 201, open at its lower end inner sleeve 202, the side wall of outer sleeve 201 and the side of inner sleeve 202
Toroidal cavity is formed between wall, the end face center of outer sleeve 201 is provided with support that perforation 205, positioned at the side wall of outer sleeve 201 and interior
Several connecting rods 403 perforation 206 is provided between the side wall of sleeve 202 on the top surface of outer sleeve 201；Positioned at communicating pipe position sleeve
Inverted U breach 204 is provided with 2；Consolidating of using cooperatively is provided with the base 301 of the lower surface of outer sleeve 201 and ball float cylinder 3
Fixed card.
Referring to Fig. 8, ball float 401 is located in ball float cylinder 302, and annular display board 404 is located at outer sleeve 201 and inner sleeve
In toroidal cavity between 202, the cylindrical anchor ring of annular display board 404 is set to red；Outer sleeve 201 is transparent material and outer
Surface is provided with graduation mark, or outer sleeve 201 and is provided with visual window, and graduation mark is provided with visual window.
It is provided with the upper surface ball float cylinder 302 of the communicating pipe of lower section and is used cooperatively with annular display board 404
Lower limiting board 306, the upper surface of lower limiting board 306 sets contact switch A310, contact switch A310 and an alarm and water jacket
The magnetic valve connection of stove supply channel；Lower limiting board 306 is located at the position of inverted U breach 204, and it is empty that contact switch A310 is located at annular
In chamber.The upper limit used cooperatively with annular display board 404 is provided with the lower surface ball float cylinder 302 of the communicating pipe of top
Position plate, upper limit plate lower surface sets contact switch B, and contact switch B is connected with the magnetic valve on water jacket furnace supply channel；On
Limiting plate is located at the surface of lower limiting board 306, and contact switch B is located in toroidal cavity.Wherein, contact switch A310 and contact
The connecting line for switching B is drawn by the inside of lower limiting board 306 or upper limit plate, and the inverted U breach for passing through inner sleeve 202
Draw and be connected with the other elements such as circuit such as power supply, alarm or magnetic valve in 204 positions.
Wherein, detection means also includes control circuit, and referring to Figure 10, control circuit includes PNP type triode Q2, NPN type
Triode Q1, NPN type triode Q1 and relay KM1, the colelctor electrode of PNP triode Q2 are connected structure with voltage stabilizing chip LM7805CC
Into the mu balanced circuit of+5V, for being powered for PLC；The base stage of PNP triode Q2 passes through the electromagnetic relay KM1's being sequentially connected
Coil and alarm connect and compose alarm circuit with the colelctor electrode of NPN type triode Q3, meanwhile, the base stage of PNP triode Q2 is also
By contact switch SB1 in parallel（Get an electric shock switch B）With contact switch SB2（Get an electric shock switch A）With NPN type triode Q1's
Base stage is connected, and the colelctor electrode of NPN type triode Q1 connects input port IO1, PLC output port IO2 and the pole of NPN type three of PLC
The base stage connection of pipe Q3, relay KM1 is single-pole double-throw relay, and one of which relay contact is connected with magnetic valve, another
Connected with the switch SB2 that gets an electric shock group relay contact；The colelctor electrode of PNP triode Q2 is connected with+9V power supplys；PLC type number isSTM32F103C8T6；Contact switch SB1 is normally opened contact, presses closure and unclamps disconnection, and contact switch SB2 is normally-closed contact, is pressed
Lower disconnection unclamps closure.
Control the workflow of circuit as follows：
A, when contact switch SB1 is pressed, triode Q2 and triode Q1 are turned on, and voltage stabilizing chip output 5V voltages are single-chip microcomputer
Power supply, on single-chip microcomputer after electricity, first carries out I/O port initialization, and IO1 is set into input state, enables internal pull-up, and IO2 is set to output
State, exports high level, and now Q2, Q3 are both turned on, the coil conducting of relay KM1, alarm equipment alarm, while relay KM1
Two groups of closings of contact, solenoid valves, filling pipe starts water filling；
B, when contact switch SB2 is pressed, contact switch SB2 disconnects, and the IO2 of PLC output low level, Q3, Q2 are not turned on, after
Electrical equipment KM1 coil blackouts, two groups of contacts disconnect, and magnetic valve power-off, filling pipe stops water filling, now voltage stabilizing chip input voltage
Almost 0, single-chip microcomputer is stopped, and system is closed;
C, when contact switch SB1 is pressed again, repeat the above steps.
The water level monitoring system of the embodiment of the present invention also includes remote transmission warning device, and remote transmission warning device includes
The PLC being connected with the alarm circuit output end of water level displaying alarm, PLC connect GPRS communication modules, are communicated by GPRS
Module can by water jacket furnace water level whether in alarm condition and whether be continuously in alarm condition information pass through SMS
Form issue monitoring personnel；Wherein the PLC of remote transmission warning device can beSTM32F103C8T6, or Mitsubishi
FX2N.Referring to Figure 11, real-time monitoring water level conditions and automatically controlling add water remote transmission warning device at the scene, reach low every time
The alarm of water level displaying alarm gives patrol officer's mobile phone alarm by remote transmission warning device simultaneously when water level needs to add water
Inform that needs add water, if discontinuously being alarmed in certain hour, illustrate automatic watering success, if continuing mobile phone alarm in the short time,
Then patrol officer needs site inspection.Patrol officer's mobile phone or handheld terminal have record and store function, can be to water jacket
The data such as stove number of water and time interval carry out statistical analysis.
Referring to Fig. 9, upper limit plate or lower limiting board 306 include that integrally formed arc fixed part 307 is consolidated with arc is arranged on
Determine the arc-shaped limit portion 308 in the middle part of the outer surface of portion 307, the both sides of arc fixed part 307 are symmetrically arranged with screw, arc fixed part
307 are fixed on ball float cylinder 3 by through the screw 309 of screw, and the appearance radius surface in arc-shaped limit portion 308 is equal to outer sleeve
The radius of 201 inner surfaces；Contact switch A310 or contact switch B are arranged in arc-shaped limit portion 308.
The outer surface of ball float cylinder 302 is evenly arranged with several bar shaped limit convexes stupefied 305, the inner surface setting of inner sleeve 202
Have several stupefied with bar shaped limit convex 305 use cooperatively and bottom insertion bar shaped limited impression 203.
Monitoring device also includes the upper bush 11 being connected with the threaded upper ends of sleeve 2, and the upper end closed of upper bush 11, lower end open
Open.
During installation, first ball float cylinder 3 being fixed on water jacket furnace and being connected two communicating pipes by flange, by lower limiting board
306 are arranged on ball float tin 3, the sleeve 2 with ball float frame 4 then are arranged on into the outside of ball float cylinder 3, and ensure sleeve 2 and float
The clamping of ball 3 bases 301 of cylinder is arranged on ball float cylinder 3 in place, then by upper limit plate, by contact switch B and contact switch A301
Wiring connect after, finally upper bush 1 is threadedly coupled with sleeve 2, you can complete install.
Technical characteristic of the present invention without description can be realized by or using prior art, will not be repeated here, certainly, above-mentioned
Illustrate it is not limitation of the present invention, the present invention is also not limited to the example above, those skilled in the art
Change, remodeling, addition or the replacement made in essential scope of the invention, should also belong to protection scope of the present invention.
Claims (8)
1. a kind of simple water jacket furnace water level monitoring system, it is characterised in that including ball float cylinder, ball float frame and be arranged on described floating
Sleeve on the outside of ball cylinder；The ball float cylinder includes the ball float cylinder of closed at both ends, near ball float cylinder lateral wall described in end positions
On be symmetrically arranged with two communicating pipes
Simple water jacket furnace water level monitoring system according to claim 1, it is characterised in that the ball float frame includes floating
Ball, support body and annular display board, the support body include being arranged on the support bar of the ball float upper surface, and the post upper is equal
Even that several inverted L shape connecting rods are distributed with, the connecting rod lower end is fixed on the upper surface of the annular display board.
2. simple water jacket furnace water level monitoring system according to claim 1 and 2, it is characterised in that the sleeve includes
The outer sleeve of upper end closed, open at its lower end, the lower surface of the outer sleeve top surface is provided with, lower end coaxial with the outer sleeve and opens
The inner sleeve opened, forms toroidal cavity, the outer sleeve end face center between outer sleeve side wall and inner sleeve side wall
Support bar perforation is provided with, is provided with the outer sleeve top surface between outer sleeve side wall and inner sleeve side wall
Several connecting rods are perforated；Inverted U breach is provided with sleeve described in the communicating pipe position.
3. the simple water jacket furnace water level monitoring system according to claim any one of 1-3, it is characterised in that the ball float
In the ball float cylinder, the annular display board is located in the toroidal cavity between the outer sleeve and the inner sleeve；
The outer sleeve is that transparent material and outer surface are provided with and visual window is provided with graduation mark, or the outer sleeve, described visual
Graduation mark is provided with window.
4. the simple water jacket furnace water level monitoring system according to claim any one of 1-4, its feature, it is characterised in that
It is provided with ball float cylinder described in the upper surface of the communicating pipe of lower section and is used cooperatively down with the annular display board
Limiting plate, the lower limiting board upper surface sets contact switch A, the contact switch A and an alarm and the water jacket furnace
The magnetic valve connection of supply channel；The lower limiting board is located at the inverted U gap position, and the contact switch A is located at described
In toroidal cavity.
5. the simple water jacket furnace water level monitoring system according to claim any one of 1-5, it is characterised in that near top
The communicating pipe lower surface described in be provided with the upper limit plate used cooperatively with the annular display board, institute on ball float cylinder
Upper limit plate lower surface setting contact switch B, the contact switch B is stated to connect with the magnetic valve on the water jacket furnace supply channel
Connect；The upper limit plate is located at the surface of the lower limiting board, and the contact switch B is located in the toroidal cavity.
6. the simple water jacket furnace water level monitoring system according to claim any one of 1-6, it is characterised in that the upper limit
Position plate or the lower limiting board include integrally formed arc fixed part and are arranged on the arc fixed part outer surface middle part
Arc-shaped limit portion, the arc fixed part both sides are symmetrically arranged with screw, and the arc fixed part is by through the screw
Screw be fixed on ball float cylinder, the appearance radius surface in the arc-shaped limit portion is equal to the half of the outer sleeve inner surface
Footpath；The contact switch A or described contact switch B is arranged in the arc-shaped limit portion.
7. the simple water jacket furnace water level monitoring system according to claim any one of 1-7, it is characterised in that the ball float
Barrel outer surface is evenly arranged with that several bar shaped limit convexes are stupefied, and the inner sleeve inner surface setting has several with the bar shaped
Limit convex it is stupefied with the use of and bottom insertion bar shaped limited impression.
8. the simple water jacket furnace water level monitoring system according to claim any one of 1-8, it is characterised in that also including with
The upper bush of the sleeve threaded upper ends connection, the upper bush upper end closed, open at its lower end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710116096.1A CN106768188B (en) | 2017-03-01 | 2017-03-01 | A kind of simple water jacket furnace water level monitoring system |
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| CN201710116096.1A CN106768188B (en) | 2017-03-01 | 2017-03-01 | A kind of simple water jacket furnace water level monitoring system |
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| CN106768188B CN106768188B (en) | 2019-05-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107444796A (en) * | 2017-08-07 | 2017-12-08 | 德清县东来化学有限公司 | The liquid level warning mechanism of liquid storage tank |
| CN109738038A (en) * | 2019-03-12 | 2019-05-10 | 王铭 | A kind of hydrology evaporating dish and evaporative capacity measuring apparatus |
| CN111693117A (en) * | 2020-07-21 | 2020-09-22 | 国家电网有限公司 | Floating type water level alarm device for hydropower station |
| CN112936303A (en) * | 2021-01-29 | 2021-06-11 | 西安航空学院 | Air-drop formula conflagration is with air-ground search and rescue robot in coordination |
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| CN109738038A (en) * | 2019-03-12 | 2019-05-10 | 王铭 | A kind of hydrology evaporating dish and evaporative capacity measuring apparatus |
| CN111693117A (en) * | 2020-07-21 | 2020-09-22 | 国家电网有限公司 | Floating type water level alarm device for hydropower station |
| CN112936303A (en) * | 2021-01-29 | 2021-06-11 | 西安航空学院 | Air-drop formula conflagration is with air-ground search and rescue robot in coordination |
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| CN106768188B (en) | 2019-05-17 |
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