CN106768188B - 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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- CN106768188B CN106768188B CN201710116096.1A CN201710116096A CN106768188B CN 106768188 B CN106768188 B CN 106768188B CN 201710116096 A CN201710116096 A CN 201710116096A CN 106768188 B CN106768188 B CN 106768188B
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- floating ball
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- ball cylinder
- contact switch
- water jacket
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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)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The present invention provides a kind of simple water jacket furnace water level monitoring systems, including floating ball cylinder, floating ball frame and the sleeve being arranged on the outside of floating ball cylinder；Floating ball cylinder includes floating ball cylinder closed at both ends, and arranged symmetrically on end positions floating ball cylinder lateral wall there are two communicating pipes.The invention has the benefit that the present invention can real-time monitoring water jacket furnace water level and can remote alarms and automatically control plus 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 many advantages, such as it is at low cost, 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 systems.
Background technique
Currently, Shengli Oil Field heavy oil block mainly uses the gathering and transportation technology of Wellhead water-blending and intermediate heating.Centre heating institute
The equipment used is mainly simple water jacket furnace, and since simple water jacket furnace opening is run, water evaporation quantity is big, it is therefore desirable to inspection people
Member's regular visit adds water, if inspection is not in place or adds water not in time, there is the risk for burning out water jacket or even oil circuit coil pipe.
Since the standardization of water jacket furnace simple within the scope of current oil field, the degree of automation are relatively low, without molding and low-cost
Water jacket furnace level monitoring and remote alerting device.
Summary of the invention
The purpose of the present invention is to provide it is a kind of it is at 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 are shown
Warning device, the water level displaying alarm include floating ball cylinder, floating ball frame and the sleeve being arranged on the outside of the floating ball cylinder；Institute
Stating floating ball cylinder includes floating ball cylinder closed at both ends, and arranged symmetrically on floating ball cylinder lateral wall described in end positions there are two connect
Siphunculus；Two communicating pipes are fixedly connected by flange with the water jacket furnace；Setting both ensure that water up and down two communicating pipes
The connection of body, while in turn ensuring that floating ball cylinder is equal or almost the same with the air pressure in water jacket furnace；
The floating ball frame includes floating ball, frame body and annular display board, and the frame body includes being arranged in the floating ball upper surface
Support rod, the post upper is evenly distributed with several inverted L shape connecting rods, and the connecting rod lower end is fixed on the ring
The upper surface of shape display board；The central horizontal face or upper surface or lower end of floating ball central horizontal face and the annular display board
Face is overlapped；The annular display board outer surface is provided with eye-catching figure layer, convenient for observing the position of water level line.
The sleeve includes the outer sleeve of upper end closed, open at its lower end, the lower end surface of the outer sleeve top surface be provided with
The outer sleeve is coaxial, open at its lower end inner sleeve, and it is empty that annular is formed between the outer sleeve side wall and the inner sleeve side wall
Chamber, the outer sleeve end face center is provided with support rod perforation, between the outer sleeve side wall and the inner sleeve side wall
The perforation of several connecting rods is provided on the outer sleeve top surface；U is provided with down on sleeve described in the communicating pipe position
Type notch；
The floating ball is located in the floating ball cylinder, the annular display board be located at the outer sleeve and the inner sleeve it
Between toroidal cavity in；The outer sleeve is transparent material and outer surface is provided on graduation mark or the outer sleeve and is provided with
Visual window is provided with graduation mark on the visual window.
It is provided on floating ball cylinder described in the upper surface of the communicating pipe of lower section and cooperates with the annular display board
Contact switch A, the contact switch A and an alarm and institute is arranged in the lower limiting board used, the lower limiting board upper surface
State the solenoid valve connection of water jacket furnace water supply pipe；The lower limiting board is located at the inverted U gap position, the contact switch A
In the toroidal cavity.
It is provided on floating ball cylinder described in the lower end surface of the communicating pipe of close over and cooperates with the annular display board
Contact switch B is arranged in the upper limit plate used, upper limit plate lower end surface, and the contact switch B and the water jacket furnace supply
Solenoid 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
It states in toroidal cavity.Wherein, the connecting line of contact switch A and contact switch B passes through the inside of lower limiting board or upper limit plate
It draws, and is connected by the extraction of the inverted U gap position of inner sleeve and the other elements such as circuits such as power supply, alarm or solenoid valve
It connects.
The upper limit plate or the lower limiting board include integrally formed arc fixed part and are arranged in the arc
Arc-shaped limit portion in the middle part of fixed part outer surface, arc fixed part two sides are symmetrically arranged with screw hole, the arc fixed part
Screw by passing through the screw hole is fixed on the floating ball cylinder, and the appearance radius surface in the arc-shaped limit portion is equal to described outer
The radius of sleeve interior surface；The contact switch A or the contact switch B are arranged in the arc-shaped limit portion.
The floating ball barrel outer surface is evenly arranged with that several bar shaped limit convexes are stupefied, and the inner sleeve tube inner surface is provided with
Several and the bar shaped limit convex be stupefied to be used cooperatively and the bar shaped limiting groove of bottom perforation.
The monitoring device further includes the upper bush connecting with the sleeve threaded upper ends, the upper bush upper end closed,
Open at its lower end.
Wherein, the water level displaying alarm further includes control circuit, and the control circuit includes PNP type triode
Q2, NPN type triode Q1, NPN type triode Q1 and relay KM1, the collector and voltage stabilizing chip of the PNP triode Q2
The voltage regulator circuit of LM7805CC+5V in series, for powering for PLC；The base stage of the PNP triode Q2 is by being sequentially connected
The coil of electromagnetic relay KM1 and the collector of alarm and the NPN type triode Q3 connect and compose alarm circuit, together
When, the base stage of the PNP triode Q2 also passes through contact switch SB1(i.e. electric shock switch B in parallel) and contact switch SB2(is i.e.
Electric shock switch A) it is connect with the base stage of the NPN type triode Q1, the collector connection PLC's of the NPN type triode Q1 is defeated
Inbound port IO1, the PLC output port IO2 are connect with the base stage of the NPN type triode Q3, and the relay KM1 is hilted broadsword
Double-throw relay, wherein a group relay contact is connected with solenoid valve, another group relay contact is connected with electric shock switch SB2；
The collector of the PNP triode Q2 is connect with+9V power supply；The single-chip microcontroller model STM32F103C8T6；It opens 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 conducting, it is single that voltage stabilizing chip, which exports 5V voltage,
The power supply of piece machine, after single-chip microcontroller powers on, first carries out I/O port initialization, and IO1 is set as input state, enables internal pull-up, and IO2 is set as
Output state exports high level, and Q2, Q3 are both turned at this time, the coil conducting of relay KM1, alarm equipment alarm, while relay
Two groups of contact closures of KM1, solenoid valves, filling pipe start to fill the water；
B, when contact switch SB2 is pressed, contact switch SB2 is disconnected, and the IO2 of PLC exports low level, and Q3, Q2 are not led
Logical, relay KM1 coil blackout, two groups of contacts disconnect, and solenoid valve power-off, filling pipe stops water filling, and voltage stabilizing chip is defeated at this time
Entering voltage is almost 0, and single-chip microcontroller stops working, and system is closed;
C, it when contact switch SB1 is pressed again, repeats the above steps.
Water level monitoring system of the invention further 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 module can by GPRS communication module
Whether water jacket furnace water level is in alarm condition and whether is continuously in the information of alarm condition by way of SMS
Issue monitoring personnel；Wherein the PLC of remote transmission warning device can be STM32F103C8T6, or mitsubishi FX2N.Ginseng
See Figure 10, real-time monitoring water level conditions and automatic control plus water, each low water level that reaches need remote transmission warning device at the scene
Water level displaying alarm is alarmed while being informed by remote transmission warning device to patrol officer's mobile phone alarm and needed when adding water
Add water, if discontinuously alarming in certain time, illustrate to automatically add water success, if continuing mobile phone alarm, inspection in the short time
Personnel need site inspection.Patrol officer's mobile phone or handheld terminal have the function of recording and storage, can add water to water jacket furnace
The data such as number and time interval are for statistical analysis.
The invention has the benefit that the present invention real-time monitoring water jacket furnace water level and remote alarms and can be controlled automatically
System plus 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,
Simultaneously have many advantages, such as it is at low cost, easy for installation, be readily disassembled.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram that upper bush is saved in the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of floating ball cylinder in the embodiment of the present invention.
Fig. 4 is the structural schematic diagram of floating ball frame in the embodiment of the present invention.
Fig. 5 is the structural schematic diagram of middle sleeve of the embodiment of the present invention.
Bottom view when Fig. 6 is middle sleeve of embodiment of the present invention use state.
Top view when Fig. 7 is middle sleeve of embodiment of the present invention use state.
Fig. 8 is the structural schematic diagram of middle sleeve of the embodiment of the present invention and floating ball cooperation.
Fig. 9 is the structural schematic diagram of lower limit of embodiment of the present invention position plate.
Figure 10 is the circuit diagram of control circuit in the embodiment of the present invention.
Figure 11 is the structural block diagram that system is monitored in the embodiment of the present invention.
Wherein, appended drawing reference are as follows: 1, upper bush；2, sleeve；201, outer sleeve；202, inner sleeve；203, bar shaped limit is recessed
Slot；204, inverted U notch；205, support rod is perforated；206, connecting rod is perforated；3, floating ball cylinder；301, pedestal；302, floating ball cylinder
Body；303, lower communicating tube；304, upper communicating pipe；305, bar shaped limit convex is stupefied；306, lower limiting board；307, arc fixed part；
308, arc-shaped limit portion；309, screw；310, contact switch A；4, floating ball frame；401, floating ball；402, support rod；403, it connects
Bar；404, annular display board.
Specific embodiment
In order to clarify the technical characteristics of the invention, being illustrated below by specific embodiment to this programme.
Referring to Fig. 1 and Fig. 2, the present invention is a kind of simple water jacket furnace water level monitoring system, including floating ball cylinder 3, floating ball frame 4
With the sleeve 2 that 3 outside of floating ball cylinder is arranged in；Referring to Fig. 3, floating ball cylinder 3 includes pedestal 301 and is arranged on pedestal 301 and both ends
Closed floating ball cylinder 302, arranged symmetrically on 302 side wall of end positions floating ball cylinder there are two communicating pipes；Two connections
Pipe is fixedly connected by flange with water jacket furnace；Setting had both guaranteed two communicating pipe (upper communicating pipe 304 and lower communicating tube 303) up and down
The connection of water body, while in turn ensuring that floating ball cylinder 3 is equal or almost the same with the air pressure in water jacket furnace.
Referring to fig. 4, floating ball frame 4 includes floating ball 401, frame body and annular display board 404, and frame body includes being arranged in floating ball 401
The support rod 402 of upper surface, 402 upper end of support rod are evenly distributed with several inverted L shape connecting rods 403, and 403 lower end of connecting rod is solid
It is scheduled on the upper surface of annular display board 404；The central horizontal face or upper end in 401 central horizontal face of floating ball and annular display board 404
Face or lower end surface are overlapped；Annular 404 outer surface of display board is provided with eye-catching figure layer, convenient for observing the position of water level line；Wherein, it floats
The shape of ball 401 is not limited only to spherical, can be also hollow tubbiness etc., can satisfy floating；Frame body be integrally formed and
Quality is small, and 3 size of floating ball cylinder can satisfy floating ball frame 4 and swim on the water surface of floating ball cylinder 3；The material of floating ball cylinder 3 and floating ball 401
Certain heat-resisting quantity is all had, 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 the outer sleeve 201 of upper end closed, open at its lower end, 201 top surface of outer sleeve
Lower end surface be provided with and outer sleeve 201 is coaxial, inner sleeve 202 of open at its lower end, 201 side wall of outer sleeve and 202 side of inner sleeve
Form toroidal cavity between wall, 201 end face center of outer sleeve is provided with support rod perforation 205, is located at 201 side wall of outer sleeve and interior
Several connecting rods perforation 206 is provided between 202 side wall of sleeve on 201 top surface of outer sleeve；On communicating pipe position sleeve 2
It is provided with inverted U notch 204；The fixation being used cooperatively is provided on the lower end surface of outer sleeve 201 and the pedestal 301 of floating ball cylinder 3
Card.
Referring to Fig. 8, floating ball 401 is located in floating ball cylinder 302, and annular display board 404 is located at outer sleeve 201 and inner sleeve
In toroidal cavity between 202, the outer circle anchor ring of annular display board 404 is set as red；Outer sleeve 201 is transparent material and outer
Surface is provided on graduation mark or outer sleeve 201 and is provided with visual window, is provided with graduation mark on visual window.
It is provided on the upper surface floating ball cylinder 302 of the communicating pipe of lower section and is used cooperatively with annular display board 404
Contact switch A310, contact switch A310 and an alarm and water jacket is arranged in lower limiting board 306,306 upper surface of lower limiting board
The solenoid valve of furnace water supply pipe connects；Lower limiting board 306 is located at 204 position of inverted U notch, and it is empty that contact switch A310 is located at annular
It is intracavitary.The upper limit being used cooperatively with annular display board 404 is provided on the lower end surface floating ball cylinder 302 of the communicating pipe of close over
Contact switch B is arranged in position plate, upper limit plate lower end surface, and contact switch B is connect with the solenoid valve on water jacket furnace water supply pipe；On
Limit 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 of switch B passes through lower limiting board 306 or the inside of upper limit plate is drawn, and passes through the inverted U notch of inner sleeve 202
204 positions are drawn and the other elements such as circuit connections such as power supply, alarm or solenoid valve.
Wherein, detection device further 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 collector of PNP triode Q2 are connected structure with voltage stabilizing chip LM7805CC
At the voltage regulator circuit of+5V, for powering for PLC；The base stage of PNP triode Q2 passes through sequentially connected electromagnetic relay KM1's
The collector of coil and alarm and NPN type triode Q3 connects and composes alarm circuit, meanwhile, the base stage of PNP triode Q2 is also
Pass through contact switch SB1(, that is, electric shock switch B in parallel) and contact switch SB2(, that is, electric shock switch A) with NPN type triode Q1's
Base stage connection, input port IO1, PLC the output port IO2 of the collector connection PLC of NPN type triode Q1 and three pole of NPN type
The base stage of pipe Q3 connects, and relay KM1 is single-pole double-throw relay, wherein a group relay contact is connected with solenoid valve, it is another
It connects with electric shock switch SB2 group relay contact；The collector of PNP triode Q2 is connect with+9V power supply；PLC type number is
STM32F103C8T6；Contact switch SB1 is normally opened contact, presses closure and unclamps disconnection, and contact switch SB2 is normally-closed contact, is pressed
Closure is unclamped in lower disconnection.
The workflow of control circuit is as follows:
A, when contact switch SB1 is pressed, triode Q2 and triode Q1 conducting, it is single that voltage stabilizing chip, which exports 5V voltage,
The power supply of piece machine, after single-chip microcontroller powers on, first carries out I/O port initialization, and IO1 is set as input state, enables internal pull-up, and IO2 is set as
Output state exports high level, and Q2, Q3 are both turned at this time, the coil conducting of relay KM1, alarm equipment alarm, while relay
Two groups of contact closures of KM1, solenoid valves, filling pipe start to fill the water；
B, when contact switch SB2 is pressed, contact switch SB2 is disconnected, and the IO2 of PLC exports low level, and Q3, Q2 are not led
Logical, relay KM1 coil blackout, two groups of contacts disconnect, and solenoid valve power-off, filling pipe stops water filling, and voltage stabilizing chip is defeated at this time
Entering voltage is almost 0, and single-chip microcontroller stops working, and system is closed;
C, it when contact switch SB1 is pressed again, repeats the above steps.
The water level monitoring system of the embodiment of the present invention further includes remote transmission warning device, and remote transmission warning device includes
The PLC connecting with the alarm circuit output end of water level displaying alarm, PLC connection GPRS communication module, are communicated by GPRS
The information whether water jacket furnace water level can be in alarm condition and whether be continuously in alarm condition by module passes through SMS
Form issue monitoring personnel；Wherein the PLC of remote transmission warning device can be STM32F103C8T6, or Mitsubishi
FX2N.Referring to Figure 11, remote transmission warning device real-time monitoring water level conditions and automatically controls plus water at the scene, reaches every time low
Water level displaying alarm alarms while giving patrol officer's mobile phone alarm by remote transmission warning device when water level needs to add water
Informing needs plus water illustrates to automatically add water success if discontinuously alarming in certain time, if continuing mobile phone alarm in the short time,
Then patrol officer needs site inspection.Patrol officer's mobile phone or handheld terminal have the function of recording and storage, can be to water jacket
The data such as furnace number of water and time interval are for statistical analysis.
Referring to Fig. 9, upper limit plate or lower limiting board 306 include integrally formed arc fixed part 307 and are arranged in arc
Arc-shaped limit portion 308 in the middle part of 307 outer surface of shape fixed part, 307 two sides of arc fixed part are symmetrically arranged with screw hole, and arc is fixed
Portion 307 is fixed on floating ball cylinder 3 by passing through the screw 309 of screw hole, 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.
302 outer surface of floating ball cylinder is evenly arranged with several bar shaped limit convexes stupefied 305, the setting of 202 inner surface of inner sleeve
There is the bar shaped limiting groove 203 that several are used cooperatively with bar shaped limit convex stupefied 305 and bottom penetrates through.
Monitoring device further includes the upper bush 1 connecting with 2 threaded upper ends of sleeve, 1 upper end closed of upper bush, open at its lower end.
When installation, first two communicating pipe of floating ball cylinder 3 it will be fixed on water jacket furnace and be connected to by flange, by lower limiting board
306 are mounted on floating ball cylinder 3, the sleeve 2 with floating ball frame 4 are then mounted on 3 outside of floating ball cylinder, and guarantee sleeve 2 and float
The clamping of 3 pedestal 301 of ball cylinder in place, then by upper limit plate is mounted on floating ball cylinder 3, by contact switch B and contact switch A301
Wiring connect after, upper bush 1 is threadedly coupled with sleeve 2 finally, installation can be completed.
Technical characteristic of the present invention without description can realize that details are not described herein by or using the prior art, certainly,
The above description is not a limitation of the present invention, and the present invention is also not limited to the example above, the ordinary skill of the art
The variations, modifications, additions or substitutions that personnel are made within the essential scope of the present invention also should belong to protection model of the invention
It encloses.
Claims (4)
1. a kind of simple water jacket furnace water level monitoring system, which is characterized in that including floating ball cylinder, floating ball frame and setting described floating
Sleeve on the outside of ball cylinder；The floating ball cylinder includes floating ball cylinder closed at both ends, close to floating ball cylinder lateral wall described in end positions
Communicating pipe there are two being above symmetrical arranged；The floating ball frame includes floating ball, frame body and annular display board, and the frame body includes that setting exists
The support rod of the floating ball upper surface, the post upper are evenly distributed with several inverted L shape connecting rods, under the connecting rod
End is fixed on the upper surface of the annular display board；
The sleeve includes the outer sleeve of upper end closed, open at its lower end, the lower end surface of the outer sleeve top surface be provided with it is described
Outer sleeve is coaxial, open at its lower end inner sleeve, forms toroidal cavity between the outer sleeve side wall and the inner sleeve side wall, institute
It states outer sleeve end face center and is provided with support rod perforation, it is described outer between the outer sleeve side wall and the inner sleeve side wall
The perforation of several connecting rods is provided on sleeve top surface；Inverted U notch is provided on sleeve described in the communicating pipe position；
The floating ball is located in the floating ball cylinder, and the annular display board is between the outer sleeve and the inner sleeve
In toroidal cavity；The central horizontal face or upper surface of floating ball central horizontal face and the annular display board or lower end surface weight
It closes；The annular display board outer surface is provided with eye-catching figure layer；The outer sleeve is transparent material and outer surface is provided with scale
Line；
It is provided on floating ball cylinder described in the upper surface of the communicating pipe of lower section and is used cooperatively with the annular display board
Lower limiting board, contact switch A, the contact switch A and an alarm and the water is arranged in the lower limiting board upper surface
The solenoid valve of blind roaster water supply pipe connects；The lower limiting board is located at the inverted U gap position, and the contact switch A is located at
In the toroidal cavity；
It is provided on floating ball cylinder described in the lower end surface of the communicating pipe of close over and is used cooperatively with the annular display board
Upper limit plate, contact switch B, the contact switch B and the water jacket furnace water supplying pipe is arranged in upper limit plate lower end surface
The solenoid valve of road connects；The upper limit plate is located at the surface of the lower limiting board, and the contact switch B is located at the ring
In shape cavity.
2. simple water jacket furnace water level monitoring system according to claim 1, which is characterized in that the upper limit plate or institute
Stating lower limiting board includes integrally formed arc fixed part and the arc being arranged in the middle part of arc fixed part outer surface limit
Position portion, arc fixed part two sides are symmetrically arranged with screw hole, and the arc fixed part is solid by the screw for passing through the screw hole
It is scheduled on the floating ball cylinder, the appearance radius surface in the arc-shaped limit portion is equal to the radius of the outer sleeve inner surface；The touching
The point switch A or contact switch B is arranged in the arc-shaped limit portion.
3. simple water jacket furnace water level monitoring system according to claim 1, which is characterized in that the floating ball cylinder appearance
Face is evenly arranged with that several bar shaped limit convexes are stupefied, and it is stupefied with the bar shaped limit convex that the inner sleeve tube inner surface is provided with several
Be used cooperatively and bottom perforation bar shaped limiting groove.
4. simple water jacket furnace water level monitoring system according to claim 1, which is characterized in that further include and the sleeve
The upper bush of threaded upper ends connection, the upper bush upper end closed, open at its lower end.
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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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| 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 true CN106768188B (en) | 2019-05-17 |
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| 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 |
| CN111693117B (en) * | 2020-07-21 | 2022-07-01 | 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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| CN2236124Y (en) * | 1995-05-23 | 1996-09-25 | 辽河石油勘探局勘察设计研究院 | Level meter for hot-pipe type anti-frozen glass tube |
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| CN106052804A (en) * | 2016-06-29 | 2016-10-26 | 徐州远洋磁性材料有限公司 | Water level measurement device |
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| CN206531546U (en) * | 2017-03-01 | 2017-09-29 | 中国石油化工股份有限公司 | A kind of simple water jacket furnace Level monitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2236124Y (en) * | 1995-05-23 | 1996-09-25 | 辽河石油勘探局勘察设计研究院 | Level meter for hot-pipe type anti-frozen glass tube |
| CN103123275A (en) * | 2011-11-21 | 2013-05-29 | 海洋王照明科技股份有限公司 | Dual liquid level monitor |
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| CN106768188A (en) | 2017-05-31 |
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