CN204854882U - Specific heat level gauge - Google Patents
Specific heat level gauge Download PDFInfo
- Publication number
- CN204854882U CN204854882U CN201520504892.9U CN201520504892U CN204854882U CN 204854882 U CN204854882 U CN 204854882U CN 201520504892 U CN201520504892 U CN 201520504892U CN 204854882 U CN204854882 U CN 204854882U
- Authority
- CN
- China
- Prior art keywords
- medium
- determined
- detector unit
- circulation pipe
- specific heat
- 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 - Fee Related
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a specific heat level gauge, it is narrow to have solved current level gauge application range, receives the measurement operating mode to influence big scheduling problem. The utility model discloses it decides the circulation medium that there is certain difference in temperature in the medium to set up and await measuring, then utilize the specific heat and the coefficient of heat transfer difference that await measuring and decide the medium and not await measuring and decide the medium in the container, through a plurality of temperature detecting element detect await measuring decide the medium in with the non - measuring temperature in deciding the medium that awaits measuring, confirm to await measuring according to the change that detects the temperature and decide the medium and not await measuring to decide the interface of medium, confirm the material level from this, it is not only practical, reliabl, and do not receive the restriction of any measurement operating mode, and application range is wide.
Description
Technical field
The utility model relates to a kind of measurement mechanism, specifically, relates to a kind of apparatus for measuring charge level.
Background technology
In Chemical Manufacture, often need the liquid level of measuring vessel or reactor (being referred to as container below), and level gauging is realized by liquid level gauge, in prior art, liquid level gauge mainly includes radar level gauge, ultrasonic level gage, capacitance level gauge, nuclear radiation liquid level gauge.Wherein, ultrasonic level gage can not measure vacuum state liquid level; Nuclear radiation liquid level gauge can produce radiation injury to human body; In reactor, have bubble, the measurement of radar level gauge or ultrasonic level gage can be disturbed, and reduce measuring accuracy, radar level gauge and ultrasonic level gage can not be applicable to the level gauging of high-temperature medium; Capacitance level gauge can not measure non-conductive medium liquid level.In conjunction with above-mentioned known, under non-usable condition, corresponding liquid level gauge measuring accuracy reduces greatly, even can not normally measure, and therefore, existing liquid level gauge narrow application range, cannot meet a multiplex level gauging.
Utility model content
The purpose of this utility model is to overcome above-mentioned defect, provides a kind of and realizes conveniently, dependable performance and the wide apparatus for measuring charge level of usable range.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of material level measuring method, the circulatory mediator running through the two is set in the medium non-to be determined above medium to be determined and material level thereof, determined the interphase of medium to be determined and non-medium to be determined by the change of some detector unit detected temperatures, determine the material level of medium to be determined thus;
Wherein, there is the temperature difference in medium to be determined and non-medium to be determined and circulatory mediator, its objective is, guarantee the sensitivity of level gauging, the temperature difference is larger, and sensitivity is higher, and medium to be determined and non-medium to be determined have different specific heat and heat transfer coefficient; The temperature difference of described circulatory mediator and medium to be determined is realized by heating arrangement or cooling device.
Based on heat conduction principle: when detector unit (material level detector unit) is in specific heat and the large medium of heat transfer coefficient, circulatory mediator to the heat of detector unit (material level detector unit) very soon by Absorption of Medium in tank body or take away, the temperature variation (rise or decline) of detector unit is less, meanwhile, temperature variation is also slower; When detector unit (material level detector unit) is in specific heat and the little medium of heat transfer coefficient, circulatory mediator is difficult to by Absorption of Medium to the heat of detector unit (material level detector unit) or takes away, therefore, detector unit (material level detector unit) temperature is higher or lower, meanwhile, temperature variation is very fast.
It is as follows that detector unit meets relation:
If circulatory mediator is heating medium, then, when the specific heat of medium to be determined and heat transfer coefficient are greater than non-medium to be determined, be arranged in the material level detector unit of medium to be determined, its temperature detected is lower than the material level detector unit being arranged in non-medium to be determined; When the specific heat of medium to be determined and heat transfer coefficient are less than non-medium to be determined, be arranged in the material level detector unit of medium to be determined, its temperature detected is higher than the material level detector unit being arranged in non-medium to be determined;
If circulatory mediator is refrigerant, then, when the specific heat of medium to be determined and heat transfer coefficient are greater than non-medium to be determined, be arranged in the material level detector unit of medium to be determined, its temperature detected is higher than the material level detector unit being arranged in non-medium to be determined; When the specific heat of medium to be determined and heat transfer coefficient are less than non-medium to be determined, be arranged in the material level detector unit of medium to be determined, its temperature detected is lower than the material level detector unit being arranged in non-medium to be determined.
Can determine liquid and gas interphase sends the current signal corresponding with liquid level at which detector unit place by transmitter according to the temperature of several detector unit and the rate of change of temperature.
Detector unit includes material level detector unit and medium temperature detecting element, wherein, material level detector unit is mainly used in the heat of medium and circulatory mediator in receiving vessel, the selection of material level detector unit and number should meet at least has one in medium to be determined, meanwhile, in non-medium to be determined, also one should be had at least; Medium temperature detecting element is used for the temperature of medium in measuring vessel, its objective is: one, judge interfacial calculating parameter; Two, it is the parameter judging container inner medium Temperature Distribution, determines the foundation of the temperature of heating fluid or refrigerating fluid.
Medium temperature detecting element can be arranged at interval, whether the concrete temperature according to container inner medium signal wire that is whether even and detector unit is easily arranged and is determined, but need guarantee: as long as there is the At The Height of medium temperature detecting element just to have material level detector unit, and also have several material level detector unit between these two end points material level detector units; If medium temperature is even, so, the signal wire of described several material level detector units is with regard to a series connection one, and just each signal wire of head and the tail two is drawn out to transmitter; If medium temperature is uneven, so, the signal wire of described several material level detector units is all directly drawn out to transmitter;
When relatively evenly temperature is consistent up and down in other words for container inner medium temperature, the density that material level detector unit is arranged is constant, the signal wire of the detector unit at end points place directly delivers to transmitter, and the signal wire of material level detector unit between end points is one another in series, the signal wire at two ends is connected to transmitter; When non-uniform temperature, the signal wire of each material level detector unit directly delivers to transmitter.Material level detector unit arrange number do not depend on that container inner medium temperature is whether consistent, but depend on the accuracy requirement of measuring material level.
If container inner medium do not need heating or cooling, so, circulatory mediator select hot circulating medium and SAPMAC method medium all passable;
According to the susceptibility of medium for temperature, determine the temperature of circulatory mediator, if container inner medium need heating and the time longer, now, select heat circulatory mediator, if container inner medium need refrigeration and the time longer, now, select cold circulatory mediator, be conducive to energy-conservation thus; Wherein, heat time and cooling time is longer refers to, not only if having heating but also have refrigerating operation in container, then the time longlyer refers to the operation that the time of refrigeration and heating is relatively grown.
If have stirring action in container, the spray stirring drive is splashed to the fluctuation of the liquid level that outer tube causes, can be processed by moving average filtering;
If container inner medium homogeneous temperature, an elongated resistance can be placed between circulation fluid and medium, the liquid level of container can be determined by the size measuring this resistance;
If place the airtight room of fixed volume between medium and circulation fluid, room has the gas of fixed mass, then the change transitions of gas in container temperature can be become the change of gaseous tension, determines liquid level by measuring pressure.
The method utilizes the specific heat of the different medium measurement object that reach material level different from heat transfer coefficient, and therefore, the utility model additionally provides a kind of level measuring method, and it applies the liquid level that material level measuring method as above measures liquid material.Meanwhile, the utility model additionally provides a kind of solid material material level measuring method, and it applies the material level that material level measuring method as above measures solid material.
The utility model additionally provides a kind of device realizing material level measuring method as above, comprise the circulation pipe inserted in medium to be determined, and to be infused in circulation pipe and with medium to be determined, to there is the circulatory mediator of the temperature difference, described circulation pipe top is exposed from medium to be determined;
Further, described circulation pipe outer wall is provided with some being arranged above and below and mutually heat insulation material level detector unit, and described material level detector unit is at least provided with one respectively in medium to be determined He in non-medium to be determined;
Further, outside described material level detector unit, be glued with outer tube, medium to be determined described in the wall contacts of described outer tube; According to the corrosive property of medium, select the outer tube of suitable material; According to the thickness of the pressure determination overcoat tube wall of medium;
Further, also comprise transmitter, described transmitter receives the detection signal of all detector units and sends the current signal corresponding with material level.
Further, described circulation pipe is " U " type circulation pipe, described " U " type circulation pipe is connected with heating arrangement or cooling device and connects and composes the closed circuit of circulatory mediator with it, and described heating arrangement or cooling device are for the manufacture of the temperature difference between circulatory mediator and medium to be determined.
Further, when described " U " type circulation pipe is connected with heating arrangement, described heating arrangement comprises the heating fluid case storing heating fluid, controls as heating fluid provides the pump of circulation power, to the heating fluid heating arrangement that heating fluid heats by described transmitter; Described pump inlet is connected with described heating fluid case by heating fluid pipe, and pump discharge is connected by the import of heating fluid pipe with described " U " type circulation pipe, and the outlet of described " U " type circulation pipe is connected with described heating fluid case by heating fluid pipe.Wherein, heating fluid heating arrangement can adopt microwave heating, electrical heating or the heating of electromagnetic oven principle etc.The circulation power of circulatory mediator is provided by pump.
Further, described heating fluid case is also provided with heating fluid case thermometer and heating fluid case upward pressure transmitter, and described transmitter receives the detection signal of described heating fluid case thermometer and heating fluid case upward pressure transmitter.
Further, when described " U " type circulation pipe is connected with cooling device, described cooling device comprises the refrigeration source device controlled by described transmitter, the outlet of described refrigeration source device is connected by the import of refrigerator pipes with described " U " type circulation pipe, and the import of described refrigeration source device is connected by the outlet of refrigerator pipes with described " U " type circulation pipe.Wherein, refrigeration source device can select compressor or other refrigeration plants, and refrigeration source can select freon (or other material).The circulation power of circulatory mediator is provided by refrigeration source device (compressor or pump).Cooling device cools the gas looped back, and now, selects compressor to carry out cooling operations, if the medium looped back is non-gaseous medium, then select heat interchanger or refrigeratory to carry out cooling operations to medium, the power of medium circulation is provided by pump.
Further, in described refrigerator pipes, the exit that is positioned at described refrigeration source device is also provided with cryogenic temperature meter and pressure unit, and described transmitter receives the detection signal of described cryogenic temperature meter and pressure unit.
Further, there is the temperature difference in the circulatory mediator in described circulation pipe and medium to be determined, and medium to be determined has different specific heat and heat transfer coefficient with the medium non-to be determined above its material level.
Further, if container is with stirring apparatus, in the middle of described " U " type circulation pipe, be also provided with the stay pipe of resistance to stirring.
Further, in order to avoid bridging is on the impact of measuring accuracy, this device also comprises the material scraper for removing the bridging of described outer tube outer wall.Cause heat transfer coefficient to decline for fouling, time constant increases, the situation that even precise decreasing etc. are more serious, can by regularly pulling down cleaning.
When the specific heat of medium to be determined and heat transfer coefficient are greater than non-medium to be determined, be arranged in the material level detector unit of medium to be determined, its temperature detected is lower than the material level detector unit being arranged in non-medium to be determined;
When the specific heat of medium to be determined and heat transfer coefficient are less than non-medium to be determined, be arranged in the material level detector unit of medium to be determined, its temperature detected is higher than the material level detector unit being arranged in non-medium to be determined.
When the temperature difference of circulatory mediator and medium to be determined is less than setting value, then think outer tube corrosion or wear and leakage, out of service immediately, and maintenance of reporting to the police; Wherein, setting value is determined according to concrete circulatory mediator and medium to be determined.
Further, consider energy-conservation, the circulatory mediator gap circulation of described " U " type circulation pipe.
Further, consider saving construction cost, when described container has multiple stage will measure liquid level, heating arrangement or cooling device can be shared simultaneously.
Further, when heating operation in container is close with the cooling down operation time, described liquid level gauge can have heating arrangement and cooling device simultaneously.
Further, in described transmitter, there is temperature control system, make circulatory mediator temperature follow the tracks of medium temperature to be determined change, ensure rational temperature difference.Simultaneously different in the pace of change of charging, process, discharging different phase according to the liquid level of container inner medium, described transmitter automatically or according to process signal or poor according to manual operation signal control temperature, to adapt to the requirement of liquid level pace of change.
Further, described container inner medium homogeneous temperature, according to the temperature difference of the import of circulation fluid and outlet, can determine the liquid level of container.
Further, in described container, liquid medium gasification needs heat, and therefore, boundary temperature may be minimum, may become one of interphase determination basis for estimation.
Further, owing to stirring on the heat transmission of liquid phase much larger than the impact of transmitting the heat of gas phase, more easily determine interfacial position, therefore, described liquid level gauge is more suitable for the liquid level of measuring tape stirred vessel.
Compared with prior art, the utility model has following beneficial effect:
The utility model arranges the circulatory mediator that there is a fixed difference difference with medium to be determined, then utilize medium to be determined in container different with heat transfer coefficient with the specific heat of non-medium to be determined, the detected temperatures in medium to be determined and in non-medium to be determined is detected by some detector units, the interphase of medium to be determined and non-medium to be determined is determined according to the change of detected temperatures, determine material level thus, not only practical, reliable, and not by the restriction of any Test Cycle, applied range.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model-embodiment 1.
Fig. 2 is the structural representation of the utility model-embodiment 2.
Fig. 3 is the structural representation of the utility model-embodiment 3.
Fig. 4 is the structural representation of the utility model-embodiment 4.
Fig. 5 is the structural representation of the utility model-embodiment 5.
Fig. 6 is the structural representation of the utility model-embodiment 6.
Fig. 7 is the structural representation of the utility model-embodiment 7.
Fig. 8 is the structural representation of the utility model-embodiment 8.
Fig. 9 is the A portion enlarged diagram of the utility model-embodiment 3.
Figure 10 is the B portion enlarged diagram of the utility model-embodiment 4.
Figure 11 is the C portion enlarged diagram of the utility model-embodiment 7.
Figure 12 is the D portion enlarged diagram of the utility model-embodiment 8.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and embodiment of the present utility model includes but not limited to the following example.
embodiment 1
As shown in Figure 1, for level gauging, present embodiments provide a kind of level gauging meter for measuring liquid level, i.e. fluid level measuring gauge, this fluid level measuring gauge utilizes the liquid feature different with heat transfer coefficient from the specific heat of gaseous state, in conjunction with circulation fluid (circulatory mediator), by some detector units detect in the liquid phase with the detected temperatures in gas phase, liquid level position is determined in the change according to detected temperatures.
Specifically, this fluid level measuring gauge comprises " U " type circulation pipe, cooling device, insertion portion and transmitter 106 part composition; Wherein, cooling device is filled by compressor 101, freon pipe 102, Freon 10 4, cryogenic temperature meter 105, pressure unit 103 and insulation material oblique line and is formed.Insertion portion is by flange 107, material level detector unit 108, material level detector unit 110, medium temperature detecting element 111, form for the thermal insulation material 109 of isolated detector unit, outer tube 112.Transmitter 106 accepts all detector unit signals, pressure unit signal and externally fed power supply, and transmitter provides power supply and control signal to compressor, sends the 4-20mADC current signal corresponding with liquid level.
" U " type circulation pipe and outer tube are weldingly fixed on flange, " U " type circulation pipe upper end is stretched out and is connected and composed the closed circuit of freon refrigerant by freon pipe and cooling device, the circulation power of circulation fluid is provided by compressor, consider energy consumption problem, gap circulation can be set to, to reduce energy consumption.Material level detector unit and medium temperature detecting element are arranged on the outer wall of " U " type circulation pipe, simultaneously, material level detector unit and medium temperature detecting element outer wall are close to outer tube, medium in the wall contacts container of outer tube, the effect of outer tube is to completely cut off " U " type circulation pipe Inner eycle liquid and liquid in container medium directly carries out heat interchange.Outer tube is smooth, outer tube is not easy be stained with medium, and outer tube contacts with detector unit well, ensures that between detector unit and medium, heat transfer is good.
Medium temperature detecting element is provided with several, and along being vertically highly arranged in order of " U " type circulation pipe tube wall, for measuring the liquid and gas temperature of differing heights, the signal wire of each material level detector unit is drawn out to transmitter separately.Shown in Fig. 1, container has stirring, therefore can cause the revolving force of liquid by resistance to paddle in order to liquid level gauge, and the present embodiment is being provided with the stay pipe of resistance to stirring (not shown) in the middle of " U " type circulation pipe.
Transmitter is made up of simulating signal switching over input circuit, digital-to-analog conversion, analog to digital conversion, analog output+hart, On-off signal, output switch parameter, microprocessor, display circuit, startup, stop button etc., and the process of input signal, program composition belong to prior art, be not described in detail in this.
When detector unit in tank body in liquid phase time, the heat of freon feed position detector unit is absorbed by liquid medium in tank body very soon or takes away, and the temperature of material level detector unit declines less, and temperature variation is also slower; When material level detector unit in tank body in gas phase time, the heat of freon feed position detector unit is difficult to be absorbed by gas phase media or take away, and therefore, detector unit temperature is lower, and temperature variation is very fast.Can determine liquid and gas interphase is at which detector unit place according to the temperature of several material level detector unit and the rate of change of temperature, and send the current signal corresponding with liquid level by transmitter.Material level detector unit 108 and material level detector unit 110 are all material level detector units, wherein, material level detector unit 110 is arranged between two material level detector units 108, and the quantity 111 of medium temperature detecting element equals the quantity of material level detector unit 108.
Can judge that liquid level is positioned at that segment limit by the signal of the detector unit gone between separately, this segment limit has two end points, lower extreme point is the medium temperature detecting element being arranged in liquid phase, upper extreme point is the material level detector unit being arranged in gas phase, if medium temperature detecting element temperature is in the liquid phase T
1, material level detector unit temperature is in the gas phase T
2, at the total moisture content T of this section, the detector unit number of this section is N, then, and and interface location M=(T-N*T
1)/(T
2-T
1).
embodiment 2
As shown in Figure 2, in the present embodiment, fluid level measuring gauge comprises " U " type circulation pipe, cooling device, insertion portion and transmitter 206 part composition.Wherein, cooling device is filled by compressor 201, freon pipe 202, Freon 20 4, cryogenic temperature meter 205, pressure unit 203 and insulation material oblique line and is formed.Insertion portion is made up of the thermal insulation material 209 between flange 207, material level detector unit 208, temperature sensor, material level detector unit 210, medium temperature detecting element 211, outer tube 212.Transmitter 206 accepts all temperature sensor signals, pressure unit signal and externally fed power supply, provides power supply and control signal to compressor, sends the 4-20mADC current signal corresponding with liquid level.The signal wire of each material level detector unit is drawn out to transmitter separately.As different from Example 1, in the present embodiment, container is without stirred vessel, therefore does not arrange the stay pipe of resistance to stirring in the middle of " U " type circulation pipe.
embodiment 3
As shown in Figure 3, in the present embodiment, fluid level measuring gauge comprises " U " type circulation pipe, cooling device, insertion portion and transmitter 306 part composition.Wherein, cooling device is filled by compressor 301, freon pipe 302, freon 304, freon thermometer 305, pressure unit 303 and insulation material oblique line and is formed.Insertion portion is made up of the thermal insulation material 309 between flange 307, material level detector unit 308, temperature sensor, material level detector unit 310, medium temperature detecting element 311, outer tube 312, because container has stirring, therefore also include the stay pipe of resistance to stirring (not shown).Transmitter 306 accepts all temperature sensor signals, pressure unit signal and externally fed power supply, provides power supply and control signal to compressor, sends the 4-20mADC current signal corresponding with liquid level.Unlike, as shown in Figure 9, in the present embodiment, transmitter is drawn out to separately with the signal wire of high material level detector unit with medium temperature detecting element, and the lead-in wire of material level detector unit between the material level detector unit gone between separately is connected one by one, head and the tail two detector unit signal wires respectively draw one to transmitter, and above-mentioned setting is to reduce lead-in wire.
embodiment 4
As shown in Figure 4, in the present embodiment, fluid level measuring gauge comprises " U " type circulation pipe, cooling device, insertion portion and transmitter 406 part composition.Wherein, cooling device is filled by compressor 401, freon pipe 402, Freon 40 4, freon thermometer 405, pressure unit 403 and insulation material oblique line and is formed.Insertion portion is made up of the thermal insulation material 409 between flange 407, material level detector unit 408, temperature sensor, material level detector unit 410, medium temperature detecting element 411, outer tube 412.Transmitter 406 accepts all detector unit signals, pressure unit signal and externally fed power supply, provides power supply and control signal to compressor, sends the 4-20mADC current signal corresponding with liquid level.As shown in Figure 10, transmitter is drawn out to separately with the signal wire of high material level detector unit with medium temperature detecting element, and the lead-in wire of material level detector unit between the material level detector unit gone between separately is connected one by one, head and the tail two material level detector unit signal wires respectively draw one to transmitter, compared with embodiment 4, unlike, in the present embodiment, container is without stirring, therefore does not arrange the stay pipe of resistance to stirring.
embodiment 5
As shown in Figure 5, in the present embodiment, fluid level measuring gauge comprises " U " type circulation pipe, heating arrangement, insertion portion and transmitter 501 part composition.Wherein, heating arrangement is made up of Heat-transfer Oil Pump 502 heat conduction fuel tank 503, pressure unit 504, conduction oil 505, heat conduction fuel tank thermometer 506, heat transfer oil electric heating body 507, valve 508, joint flange 509 and insulation material; Insertion portion is made up of the thermal insulation material 512 between flange 510, material level detector unit 511, temperature sensor, material level detector unit 513, medium temperature detecting element 514, outer tube 515, the stay pipe of resistance to stirring.Transmitter 501 accepts all detector unit signals, pressure unit signal and externally fed power supply, provides power supply and control signal to Heat-transfer Oil Pump, sends the 4-20mADC current signal corresponding with liquid level.The signal wire of each material level detector unit is drawn out to transmitter separately, and container has stirring, therefore is provided with the stay pipe of resistance to stirring.
When detector unit in tank body in liquid phase time, conduction oil is absorbed by liquid medium in tank body very soon to the heat of detector unit or takes away, and the temperature of detector unit raises less, and temperature variation is also slower; When detector unit in tank body in gas phase time, conduction oil is difficult to be absorbed by gas phase media or take away to the heat of detector unit, and therefore, detector unit temperature is higher, and temperature variation is very fast.Can determine liquid and gas interphase is at which detector unit place according to the temperature of several detector unit and the rate of change of temperature, and send the current signal corresponding with liquid level by transmitter.
embodiment 6
As shown in Figure 6, in the present embodiment, fluid level measuring gauge comprises " U " type circulation pipe, heating arrangement, insertion portion and transmitter 601 part composition.Wherein, heating arrangement is made up of Heat-transfer Oil Pump 602 heat conduction fuel tank 603, pressure unit 604, conduction oil 605, heat conduction fuel tank thermometer 606 heat transfer oil electric heating body 607, valve 608, joint flange 609 and insulation material; Insertion portion is made up of the thermal insulation material 612 between flange 610, material level detector unit 611, temperature sensor, material level detector unit 613, medium temperature detecting element 614, outer tube 615.Transmitter 601 accepts all detector unit signals, pressure unit signal and externally fed power supply, provides power supply and control signal to Heat-transfer Oil Pump, sends the 4-20mADC current signal corresponding with liquid level.The signal wire of each material level detector unit is drawn out to transmitter separately.Compared with embodiment 5, in the present embodiment, container is without stirring, therefore does not arrange stirring support.
embodiment 7
As shown in Figure 7, in the present embodiment, fluid level measuring gauge comprises " U " type circulation pipe, heating arrangement, insertion portion and transmitter 701 part composition.Wherein, heating arrangement is made up of Heat-transfer Oil Pump 702 heat conduction fuel tank 703, pressure unit 704, conduction oil 705, heat conduction fuel tank thermometer 706 heat transfer oil electric heating body 707, valve 708, joint flange 709 and insulation material; Insertion portion is made up of the thermal insulation material 712 between flange 710, material level detector unit 711, temperature sensor, material level detector unit 713, medium temperature detecting element 714, outer tube 715, the stay pipe of resistance to stirring (not shown).Transmitter 601 accepts all detector unit signals, pressure unit signal and externally fed power supply, provides power supply and control signal to Heat-transfer Oil Pump, sends the 4-20mADC current signal corresponding with liquid level.The signal wire of each material level detector unit is drawn out to transmitter separately.As shown in figure 11, transmitter is drawn out to separately with the signal wire of high material level detector unit with medium temperature detecting element, and the lead-in wire of material level detector unit between the material level detector unit gone between separately is connected one by one, head and the tail two material level detector unit signal wires respectively draw one to transmitter.
embodiment 8
As shown in Figure 8, in the present embodiment, fluid level measuring gauge comprises " U " type circulation pipe, heating arrangement, insertion portion and transmitter 801 part composition.Wherein, heating arrangement is made up of Heat-transfer Oil Pump 802 heat conduction fuel tank 803, pressure unit 804, conduction oil 805, heat conduction fuel tank thermometer 806 heat transfer oil electric heating body 807, valve 808, joint flange 809 and insulation material; Insertion portion is made up of the thermal insulation material 812 between flange 810, material level detector unit 811, temperature sensor, material level detector unit 813, medium temperature detecting element 814, outer tube 815.Transmitter 801 accepts all detector unit signals, pressure unit signal and externally fed power supply, provides power supply and control signal to Heat-transfer Oil Pump, sends the 4-20mADC current signal corresponding with liquid level.The signal wire of each material level detector unit is drawn out to transmitter separately, and container is without stirring.As shown in figure 12, transmitter is drawn out to separately with the signal wire of high material level detector unit with medium temperature detecting element, and the lead-in wire of material level detector unit between the material level detector unit gone between separately is connected one by one, head and the tail two material level detector unit signal wires respectively draw one to transmitter, and container is without stirring.
According to above-described embodiment, just the utility model can be realized well.What deserves to be explained is; under prerequisite based on above-mentioned design concept; for solving same technical matters; even if some making on architecture basics disclosed in the utility model are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the utility model, therefore it also should in protection domain of the present utility model.
Claims (10)
1. a specific heat liquid level gauge, is characterized in that, comprises the circulation pipe inserted in medium to be determined, and to be infused in circulation pipe and to have the circulatory mediator of the temperature difference with medium to be determined, and described circulation pipe top is exposed from medium to be determined;
Described circulation pipe outer wall is provided with some being arranged above and below and mutually heat insulation detector unit, and described detector unit is at least provided with one respectively in medium to be determined He in non-medium to be determined;
Described detector unit comprises the material level detector unit for receiving circulatory mediator and container inner medium heat, and the only medium temperature detecting element of medium heat in receiving vessel;
Outer tube is glued with, medium to be determined described in the wall contacts of described outer tube outside described material level detector unit;
Also comprise transmitter, described transmitter receives the detection signal of all detector units and sends the current signal corresponding with material level.
2. a kind of specific heat liquid level gauge according to claim 1, it is characterized in that, described circulation pipe is " U " type circulation pipe, described " U " type circulation pipe is connected with heating arrangement or cooling device and connects and composes the closed circuit of circulatory mediator with it, and described heating arrangement or cooling device are for the manufacture of the temperature difference between circulatory mediator and medium to be determined.
3. a kind of specific heat liquid level gauge according to claim 2, it is characterized in that, when described " U " type circulation pipe is connected with heating arrangement, described heating arrangement comprises the heating fluid case storing heating fluid, control as heating fluid provides the pump of circulation power, to the heating fluid heating arrangement that heating fluid heats by described transmitter; Described pump inlet is connected with described heating fluid case by heating fluid pipe, and pump discharge is connected by the import of heating fluid pipe with described " U " type circulation pipe, and the outlet of described " U " type circulation pipe is connected with described heating fluid case by heating fluid pipe.
4. a kind of specific heat liquid level gauge according to claim 3, it is characterized in that, described heating fluid case is also provided with heating fluid case thermometer and heating fluid case upward pressure transmitter, and described transmitter receives the detection signal of described heating fluid case thermometer and heating fluid case upward pressure transmitter.
5. a kind of specific heat liquid level gauge according to claim 4, is characterized in that, described heating fluid heating arrangement and the combination of described detector unit are formed the heating element with temp sensing function.
6. a kind of specific heat liquid level gauge according to claim 5, it is characterized in that, when described " U " type circulation pipe is connected with cooling device, described cooling device comprises the refrigeration source device controlled by described transmitter, the outlet of described refrigeration source device is connected by the import of refrigerator pipes with described " U " type circulation pipe, and the import of described refrigeration source device is connected by the outlet of refrigerator pipes with described " U " type circulation pipe.
7. a kind of specific heat liquid level gauge according to claim 6, it is characterized in that, in described refrigerator pipes, the exit that is positioned at described refrigeration source device is also provided with cryogenic temperature meter and pressure unit, and described transmitter receives the detection signal of described cryogenic temperature meter and pressure unit.
8. a kind of specific heat liquid level gauge according to claim 7, is characterized in that, the circulatory mediator in described circulation pipe and medium to be determined exist the temperature difference, and medium to be determined has different specific heat and heat transfer coefficient with the medium non-to be determined above its material level.
9. a kind of specific heat liquid level gauge according to claim 7, is characterized in that, in the middle of described " U " type circulation pipe, be also provided with the stay pipe of resistance to stirring; Also comprise the material scraper for removing the bridging of described outer tube outer wall; The circulatory mediator gap circulation of described " U " type circulation pipe.
10. a kind of specific heat liquid level gauge according to claim 7, it is characterized in that, when the specific heat of medium to be determined and heat transfer coefficient are greater than non-medium to be determined, be arranged in the material level detector unit of medium to be determined, its temperature detected is lower than the material level detector unit being arranged in non-medium to be determined;
When the specific heat of medium to be determined and heat transfer coefficient are less than non-medium to be determined, be arranged in the material level detector unit of medium to be determined, its temperature detected is higher than the material level detector unit being arranged in non-medium to be determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504892.9U CN204854882U (en) | 2015-07-13 | 2015-07-13 | Specific heat level gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504892.9U CN204854882U (en) | 2015-07-13 | 2015-07-13 | Specific heat level gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204854882U true CN204854882U (en) | 2015-12-09 |
Family
ID=54745422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520504892.9U Expired - Fee Related CN204854882U (en) | 2015-07-13 | 2015-07-13 | Specific heat level gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204854882U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865574A (en) * | 2016-04-11 | 2016-08-17 | 北京吉泰凯士仪表科技有限公司 | Thermal type liquid level meter |
-
2015
- 2015-07-13 CN CN201520504892.9U patent/CN204854882U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865574A (en) * | 2016-04-11 | 2016-08-17 | 北京吉泰凯士仪表科技有限公司 | Thermal type liquid level meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202041227U (en) | Performance detection system based on drainage method of air source heat pump water heater | |
| CN101982756B (en) | Cold and hot alternation impact test device | |
| CN103464232B (en) | For detecting the constant temperature water bath apparatus of asphalt quality | |
| CN107748273B (en) | Pipeline pressure wave velocity testing device and method based on pipe flow test loop | |
| CN103836800B (en) | Electric heater and control method thereof | |
| CN204374320U (en) | A kind of electric cooker efficiency automatic testing equipment | |
| CN109520915B (en) | Low-pressure low-altitude difference natural circulation test device | |
| CN105004399A (en) | Specific heat liquid level meter | |
| CN203494530U (en) | Constant-temperature water bathing device for detecting quality of asphalt | |
| CN208334251U (en) | A kind of heat dissipation index measurement device | |
| CN204854882U (en) | Specific heat level gauge | |
| CN105865574A (en) | Thermal type liquid level meter | |
| CN205308298U (en) | Take device of level gauge | |
| CN207096150U (en) | The underwater heat-insulating property experimental rig of underground heat composite thermal pipeline | |
| CN206546516U (en) | The system for controlling equipment under test temperature | |
| CN206208811U (en) | A kind of Thermal Conductivity by Using measurement apparatus | |
| CN200996922Y (en) | Antifouling performance evaluating experimental device | |
| CN110133038B (en) | Oscillatory heat pipe, static test platform and heat exchange performance evaluation method | |
| CN206724535U (en) | A kind of monitoring system of large-scale refrigeration plant | |
| CN102890099A (en) | Method and device for measuring components of mixture | |
| CN207161815U (en) | Tap and its quantitative-outlet control device | |
| CN212301210U (en) | Device for measuring liquid viscosity coefficient by capillary method | |
| CN206772872U (en) | Refrigerant insulating tube dimensional stability test equipment | |
| CN209624084U (en) | Coiled Internal melt opening machine system test device | |
| CN117607211B (en) | Loop system and method for detecting and eliminating impurities in liquid metal in loop system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20190713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |