CN104697327A - Wireless temperature measurement system for rotary kiln - Google Patents
Wireless temperature measurement system for rotary kiln Download PDFInfo
- Publication number
- CN104697327A CN104697327A CN201310661455.3A CN201310661455A CN104697327A CN 104697327 A CN104697327 A CN 104697327A CN 201310661455 A CN201310661455 A CN 201310661455A CN 104697327 A CN104697327 A CN 104697327A
- Authority
- CN
- China
- Prior art keywords
- instrument box
- temperature
- heat insulation
- rotary kiln
- 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.)
- Pending
Links
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a wireless temperature measurement system for a rotary kiln. The rotary kiln is provided with at least one temperature detection hole, wherein a temperature measurement element is inserted in the detection hole; the temperature measurement element is connected with an electronic component through a signal cable and used for transmitting temperature measurement signals to the electronic component, so that the electronic component processes the signals and then transmits to a ground control center; the system comprises a thermal insulation instrument box and at least one thermoelectric cooling device; the instrument box is mounted on the rotary kiln through a support rod; the instrument box comprises an inner wall, a thermal insulation layer and an outer wall; the electronic component is positioned in the instrument box; the cooling device is provided with direct current by a power supply system; a heat absorption side and a heat emission side are respectively formed on two surfaces of the cooling device; the cooling device is fixedly mounted on the instrument box through the heat absorption side; the cooling device is used for lowering the environment temperature in the box. The thermal insulation instrument box is matched with the thermoelectric cooling device to ensure that the temperature in the box satisfies the working temperature of the electronic component, so that the work of the electronic component is safe and reliable, and the measured in-kiln temperature signals are correctly transmitted to the control center in real time.
Description
Technical field
The present invention relates to a kind of rotary kiln wireless temperature measurement system.
Background technology
Rotary kiln is a kind of Thermal Equipment of material being carried out to drying, roasting and calcining, and in the production process participated in there being rotary kiln device, the calcining of material is all often an extremely important procedure in technological process.And the quality of burning quality is often directly by the impact of kiln temperature, that is, the production of temperature survey to rotary kiln of rotary kiln plays key effect.If kiln temperature detection accuracy is lower, the supply of rotary kiln fuel and combustion air supply just may be caused to can not get effective control, easily cause kiln temperature uneven vertically, time serious, cause the knot kiln of rotary kiln or furnace lining to peel off.
The rotation of rotary kiln brings great difficulty to kiln temperature measurement, and therefore kiln temperature is measured is all a difficult problem all the time.There are following two kinds of thermometric modes in prior art, simply introduce below:
Mode one, inserts thermocouple in kiln and directly measures kiln temperature, and passes through the temp measuring method of slip ring signal transmission.Under which, signal adopts the transmission of cable hardwire, needs protection in rotary kiln high temperature of outer surface of high district without electronic equipment; but there is the problem of slip ring and thermocouple signal loose contact, easily cause signal interruption, and the concentricity of slip ring and rotary kiln is difficult to ensure; volume is comparatively large, and fabrication amount is large.
Mode two, in a kind of rotary kiln wireless temperature measurement system disclosed in Chinese patent ZL200620075480.9, the thermocouple measuring kiln temperature is connected with the main circuit board in radio transmitters by temperature-compensating wire, after the temperature signal that main circuit board process thermocouple exports, send to ground receiving system by wireless module.Under which, hyperthermia radiation heat during rotary kiln running can affect the service behaviour of electronic unit, to this, though it adopts thermal insulation board to carry out heat insulation process to electronic unit, but this provision for thermal insulation comparatively simply and clear and definite not, effect of heat insulation is difficult to ensure, therefore still can not ensure the safe and reliable work of electronic unit.
Summary of the invention
The embodiment of the present invention provides a kind of rotary kiln wireless temperature measurement system, in order to ensure the safe and reliable work of electronic unit.
For this reason, the embodiment of the present invention provides following technical scheme:
A kind of rotary kiln wireless temperature measurement system, rotary kiln has at least one temperature detection hole, and each temperature element inserts in a described temperature detection hole respectively; Described temperature element is connected with electronic unit by signal cable, temperature measurement signal is transferred to described electronic unit, transfer to ground control centre by antenna with communication by after described electronic unit process, described system also comprises heat insulation instrument box, at least a set of thermoelectric cooling unit
Described heat insulation instrument box is arranged on rotary kiln by support bar, and described heat insulation instrument box comprises inwall, thermal insulation layer, outer wall, and it is inner that described electronic unit is positioned at described heat insulation instrument box;
Described thermoelectric cooling unit accepts the direct current that electric power system provides, the two sides of described thermoelectric cooling unit is made to form heat absorbing side and cold side respectively, described thermoelectric cooling unit is fixedly mounted on described heat insulation instrument box by described heat absorbing side, for reducing the environment temperature of described heat insulation instrument box inside.
Preferably, described heat insulation instrument box and rotary kiln outer surface are at a distance of 300mm ~ 1400mm.
Preferably, described heat insulation instrument box is arranged on rotary kiln by support bar, comprising:
An installing plate is welded in one end that described support bar is connected with described heat insulation instrument box bottom end face, and the area of described installing plate is 1/4 ~ 1/2 of described bottom end face area;
Described bottom end face and described installing plate, by weld or securing member is connected, to make described heat insulation instrument box be fixed on described support bar, and are arranged on rotary kiln by described support bar.
Preferably, any one in four side end faces of described heat insulation instrument box of described astronomical cycle;
Perforate for fixing up an aerial wire on described heat insulation instrument box carries out encapsulation process by encapsulant.
Preferably, described thermoelectric cooling unit is fixedly mounted on the side end face of described heat insulation instrument box, and when rotary kiln rotates, described thermoelectric cooling unit is positioned at lee face.
Preferably, described electric power system comprises battery powdered device and/or TRT.
Preferably, described TRT is device of solar generating or temperature difference electricity generation device.
Preferably, described electric power system also comprises voltage collection circuit, power supply switch circuit,
The voltage that described voltage collection circuit produces for gathering described TRT;
Described power supply switch circuit judges that whether voltage that described voltage collection circuit obtains is lower than predetermined threshold value, if so, then switches and powered by described battery powdered device; If not, then switch and powered by described TRT.
Preferably, be also provided with at least one deck thermal insulation board between described heat insulation instrument box and rotary kiln outer surface, described thermal insulation board is fixed on described support bar and/or rotary kiln outer surface;
Described thermal insulation board comprises top layer steel plate, heat-barrier material, bottom steel plate;
The length of described thermal insulation board is 1000mm ~ 2000mm, and width is 500mm ~ 1000mm, and thickness is 10mm ~ 50mm.
Preferably, preset the wake-up period of described electronic unit, described electronic unit is in low-power consumption mode, is only just waken up after described wake-up period arrives and enters mode of operation.
The wireless temperature measurement system of the embodiment of the present invention, has set up heat insulation instrument box and thermoelectric cooling unit, electronic unit is placed on heat insulation instrument box inner, is reduced the environment temperature of electronic unit position by isolation method; Meanwhile, also on heat insulation instrument box, fixedly mount at least one thermoelectric cooling unit, reduced the environment temperature of electronic unit position by thermoelectric cooling unit by thermoelectric cooling principle.So, by cooperatively interacting of heat insulation instrument box and thermoelectric cooling unit, just can ensure that the temperature inside the box meets the requirement of electronic unit operating temperature, thus ensure the safe and reliable work of electronic unit, in real time accurately by the control centre of the kiln temperature Signal transmissions of measurement to ground.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the scheme of installation of wireless temperature measurement system of the present invention;
Fig. 2 is the thermoelectric cooling principle schematic that the present invention applies;
Fig. 3 is the schematic diagram of a kind of implementation of thermo-electric cooling device of the present invention;
Fig. 4 is the thermo-electric generation principle schematic that the present invention applies;
Fig. 5 is the schematic diagram of temperature difference electricity generation device embodiment 1 of the present invention;
Fig. 6 is the schematic diagram of temperature difference electricity generation device embodiment 2 of the present invention;
Fig. 7 is the partial enlarged drawing of temperature difference electricity generation device embodiment 2 of the present invention.
Detailed description of the invention
In order to make those skilled in the art person understand the present invention program better, below in conjunction with drawings and embodiments, the embodiment of the present invention is described in further detail.
In order to the kiln temperature of grasp rotary kiln accurately and timely, ensure burning quality, the present invention program offers multiple temperature detection hole along the kiln shell of rotary kiln to furnace lining direction, each temperature detection hole interpolation temperature element (can be presented as thermocouple, thermal resistance, land surface pyrometer, shown in Fig. 1 is thermocouple 10), carry out temperature detection (as a preferred embodiment of the present invention, temperature-sensing element can be set in temperature detection hole, then temperature detection is carried out by the mode of temperature element measurement temperature-sensing element temperature), in order to make the temperature detected as far as possible close to the temperature of rotary kiln inside, and can not damage by furnace high-temperature, temperature detection hole should be reserved certain degree of depth and furnace lining is not penetrated, specifically can schematic diagram shown in Figure 1.
Each thermocouple is all connected to the electronic unit 12 being positioned at heat insulation instrument box by compensating wire 11, electronic unit is transferred to by detecting the temperature signal obtained, undertaken amplifying by electronic unit, after the relevant treatment such as AD conversion, be wirelessly transmitted to the control centre on ground by antenna 13.So, control centre just can grasp kiln temperature (the temperature closely kiln temperature in the temperature detection hole in the present invention of rotary kiln in real time, kiln temperature can be regarded as use), and then the coal gas controlling to enter rotary kiln accordingly reaches the object of the temperature controlled in kiln.
It should be noted that, temperature element should support the use with signal cable, if as above temperature element be thermocouple, then corresponding signal cable is compensating wire; If temperature element is thermal resistance, then corresponding signal cable is high-temperature resistant shielded control cable.In addition, the present invention when detected temperatures, the mode that temperature detection hole can not penetrate for furnace lining, corresponding to this, temperature element is inserted in temperature detection hole, detect temperature in borehole; Or temperature detection hole can also for penetrating the mode of furnace lining, and corresponding to this, temperature element is inserted in protective sleeve, then inserts temperature detection hole together with protective sleeve, and extend in kiln, detect the flue-gas temperature in kiln.No matter which kind of mode temperature detection hole adopts, and temperature signal, after temperature being detected, all can be transferred to after electronic unit processes by holding wire and be forwarded by communication by temperature element.
In addition, it should be noted that, each electronic unit can receive the temperature signal that multiple temperature element sends, accordingly, electronic unit will establish the binding post of multiple signal cable for connecting temperature element, and binding post number is more, now connecting terminal block is (mutual adjacent arranged together by several binding post, be commonly referred to terminal block) longer, cloth is set as a line on electronic components, if even will multirow be lined up time long, therefore the volume of electronic unit is larger, preferably, an electronic unit can process the temperature signal of 1 ~ 30 temperature element transmission.
As everyone knows, rotary kiln can discharge hyperthermia radiation heat in running, and the environment temperature around kiln is very high, and for the electronic unit of any technical grade, it has a temperature limit normally worked, once exceed this temperature limit, will certainly affect the normal work of electronic unit.In order to reduce the environment temperature of electronic unit present position, make its weak voltage signal normally performing the transmission of reception thermocouple, treatment temperature signal, wireless transmission temperature signal to actions such as control centres, ensure control centre's energy reliable reception kiln temperature signal, wireless temperature measurement system of the present invention comprises a heat insulation instrument box 14, and at least a set of thermoelectric cooling unit 15.
It should be noted that, heat insulation instrument box is undertaken heat insulation by isolation method, temperature is made to increase unlikely too fast, thermoelectric cooling unit is lowered the temperature by thermoelectric cooling principle, temperature can be made when temperature is too high to reduce, and the two cooperatively interacts, and carries out adjusting the temperature of the electronic unit place environment being positioned at heat insulation instrument box inside, make it normally work, thus transmit reliable kiln temperature signal to control centre.
Respectively the formation of heat insulation instrument box and thermoelectric cooling unit is explained below.
1. heat insulation instrument box
As above introduce, it is unlikely too fast that heat insulation instrument box mainly makes the environment temperature of electronic unit position raise by isolation method, can be presented as following two aspects:
On the one hand, the electronic unit in heat insulation instrument box and case as far as possible away from rotary kiln outer surface, will be isolated by the distance adjusting distance.The mounting distance of heat insulation instrument box is mainly limited to the heat-insulating capability of rotary kiln hull-skin temperature and heat insulation instrument box, and the distance of the present invention to heat insulation instrument box and rotary kiln outer surface can be not specifically limited, and as a kind of example, can be preferably 300mm ~ 1400mm.
It should be noted that, spacing between heat insulation instrument box and rotary kiln is also unsuitable excessive, because electronic unit can rotate with rotary kiln in heat insulation instrument box and case, if spacing is therebetween excessive, the centrifugal force born is also just larger, may rotary kiln be departed from rotary course, easily cause peril.
On the other hand, heat insulation instrument box adopts heat-barrier material to make, and is isolated electronic unit by the mode of gap sealing.Particularly, heat insulation instrument box can comprise inwall, thermal insulation layer, outer wall, and inner and outer wall can adopt the material that stainless steel, cold-reduced sheet etc. are corrosion-resistant, high strength, quality are light to make, and thickness can at 0.5mm ~ 3mm.High temperature resistant (being generally not less than 500 DEG C) material that thermal insulation layer can select heat-proof quality good is made, and thickness can at 10mm ~ 30mm.
It should be noted that, because heat insulation instrument box is fixed on rotary kiln, namely can be exposed in rotary kiln external environment condition, need the waterproof measure considering the reply rainy day.Because heat insulation instrument box is an obturator, as long as few perforate on instrument box as far as possible, ensure that the seal of instrument box just can ensure the water proofing property of instrument box.But, consider that thermocouple needs to be transferred to by temperature signal by compensating wire electronic unit in case, the temperature signal after process will be transferred to control centre by antenna by electronic unit, therefore on instrument box, perforate is unavoidable, in order to ensure the good water proofing property of instrument box, the present invention utilizes encapsulant or alternate manner to carry out encapsulation process in instrument box tapping, apertured place, so both can improve the water resistance of heat insulation instrument box, and its effect of heat insulation can have been improved again.Wherein, encapsulant can adopt 704 silica gel, its have high temperature resistant, viscosity good, good airproof performance, have the features such as certain thermal insulation.
In addition, it should be noted that, can arrange in a heat insulation instrument box of the present invention and overlap electronic unit more, namely can be many-one relationship between instrument box and electronic unit, consider the problems such as the signal cable of the temperature element that multiple electronic unit work heat release is more and apart from each other with electronic unit is longer, the present invention preferably can arrange a set of electronic unit in a heat insulation instrument box, namely also can be one-one relationship between instrument box and electronic unit, can be not specifically limited this present invention.
In addition, relation between electronic unit and ground control centre can be one to one, also can be many-one, namely a control centre only can forward the temperature signal of coming by process electronic unit, also can process the temperature signal that multiple electronic unit forwards, the present invention is also not specifically limited this.
From the relation of the relation of temperature element and electronic unit, electronic unit and heat insulation instrument box, temperature element is more, and corresponding electronic unit is more, and heat insulation instrument box is also more.
In order to ensure reliable and stable being arranged on rotary kiln and rotating with kiln of heat insulation instrument box, the size of instrument box is unsuitable excessive, and specifically can be presented as: length is 400mm ~ 1500mm, be highly 400mm ~ 600mm, and broadband is 400mm ~ 600mm.
Schematic diagram is known as shown in Figure 1, heat insulation instrument box is arranged on rotary kiln by support bar 16, particularly, one end support bar being connected rotary kiln is called bottom, otherwise the one end be connected with heat insulation instrument box is called top, rotary kiln outer surface is directly welded on bottom support bar, support bar top can directly be welded on bottom heat insulation instrument box, or, first can also weld an installing plate 17 in support bar top, and then pass through welding manner, or utilize securing member to be connected with bottom heat insulation instrument box by installing plate, namely the connection bottom support bar top and heat insulation instrument box is indirectly realized.
It should be noted that, installing plate can be presented as square, the shape such as rectangle, circle, can be not specifically limited this present invention.The size of installing plate will match with instrument box bottom size as far as possible, preferably installing plate area can be taken as 1/4 ~ 1/2 of instrument box bottom area.Installing plate adopts and both can be used for welding, the material that can be used for again by the securing member of such as bolt is fixing is made, so, when heat insulation instrument box employing can not be made with the material (as stainless steel) of usual manner welding, securing member can be utilized to connect heat insulation instrument box and installing plate, and when heat insulation instrument box adopts welding material (as carbon steel) to make, then the mode by welding and/or securing member connects heat insulation instrument box and installing plate.
2. thermoelectric cooling unit
Thermoelectric cooling unit is fixedly installed on heat insulation instrument box, for reducing the environment temperature of instrument box inside, particularly, can determine the quantity of the thermoelectric cooling unit be arranged on an instrument box according to the cooling demand of reality, the present invention can be not specifically limited this.
Thermoelectric cooling unit is a kind of equipment utilizing thermoelectric cooling principle to make, specifically can see Fig. 2, the thermoelectric cooling principle schematic illustrated, P-type semiconductor element and N-type semiconductor element are coupled to thermocouple, after connecting dc source again, the transfer of the temperature difference and heat can be produced in the joint of semiconductor element, be specially: be the joint of N to P at the sense of current, temperature declines and absorbs heat, form heat absorbing end or be called cold junction, be the joint of P to N at the sense of current, temperature rises and heat release, forms release end of heat or is called hot junction.
In conjunction with above-mentioned principle, thermoelectric cooling unit 15 of the present invention can schematic diagram shown in Figure 3, wherein thermoelectric cooling unit is fixedly mounted on heat insulation instrument box, heat-transferring assembly, cooling assembly 22, radiating subassembly, heat-barrier material 24 can be comprised, wherein, cooling assembly is between heat-transferring assembly and radiating subassembly, and filling with insulation material is wanted in the region of not placing cooling assembly between heat-transferring assembly and radiating subassembly, the heat exchange effectively between isolation heat-transferring assembly and radiating subassembly.
Wherein, cooling assembly is in series by multiple cooling piece, is connected, carries out centrally connected power supply by electric power system between each cooling piece by power line is positive and negative, one end that cooling assembly is contacted with heat-transferring assembly forms heat absorbing end, and the one end contacted with radiating subassembly forms release end of heat.Particularly, cooling assembly heat absorbing end and heat-transferring assembly can be called heat absorbing side, cooling assembly release end of heat and radiating subassembly are called cold side, thermoelectric cooling unit of the present invention will be fixedly mounted on heat insulation instrument box by heat absorbing side, if release end of heat carries out continual and steady cooling by radiating subassembly, so heat absorbing end is with regard to reliable and stable carrying out heat exchange by heat-transferring assembly and heat insulation instrument box, reduces the environment temperature of heat insulation instrument box inside.
Heat-transferring assembly can be presented as that the heat transfer plate 21 that thermal conductivity is good, radiating subassembly can be presented as the heat sink 23 that thermal conductivity is good.
Or, in order to improve the heat exchange efficiency of heat-transferring assembly and instrument box internal environment, heat-transferring assembly also can comprise thermofin 25, thermofin is laid in heat transfer plate one end away from cooling assembly, namely one end that heat transfer plate does not contact with heat absorbing end is laid in, for increasing the contact area of heat transfer plate and instrument box internal environment, improve the heat-transfer effect of heat-transferring assembly.
Or, in order to improve the ability of radiating subassembly distribute heat, radiating subassembly also can comprise radiating fin 26, radiating fin is laid in heat sink one end away from cooling assembly, namely one end that heat sink does not contact with release end of heat is laid in, for increasing the contact area of heat sink and cooling air, increasing heat exchange efficiency, improving heat-sinking capability.
Or radiating subassembly also can comprise the equipment that radiator fan 27 grade can strengthen cooling air wind-force, can improve the heat-sinking capability of heat sink equally.
As above introduce, thermoelectric cooling unit can be fixedly mounted on heat insulation instrument box outer surface, consider and will be connected with installing plate bottom instrument box, therefore be not suitable for, at this end face, thermoelectric cooling unit is installed, except bottom instrument box, thermoelectric cooling unit can be installed on any one end face remaining.In addition, consider that refrigerating plant is directly exposed in air, rainwater etc. may produce certain impact to refrigeration, and refrigerating plant is also not suitable for the top being arranged on instrument box, and that is, refrigerating plant is preferably mounted on four side end faces of instrument box.In addition, consider that thermoelectric cooling unit can rotate with rotary kiln, and environment temperature around rotary kiln is higher, in order to reduce in rotary course, around kiln, hot blast is on the impact of refrigerating plant heat-sinking capability, and refrigerating plant is preferably arranged on lee face by the present invention.Schematic diagram shown in Figure 1, according to the rotation mode shown in figure, is preferably arranged on refrigerating plant in the left end face of instrument box.
Except above-mentioned heat insulation instrument box, thermoelectric cooling unit, present invention also offers a series of improvement project, explain respectively below.
3. thermal insulation board
In order to protect electronic unit; the present invention, except increasing heat insulation instrument box and thermoelectric cooling unit, also improves thermal insulation board 18, and thermal insulation board is between heat insulation instrument box and rotary kiln; be fixed on support bar and/or rotary kiln outer surface, for isolating the hyperthermia radiation heat of rotary kiln.In prior art, thermal insulation board all many comprise one deck steel plate, find in actual use, the effect of heat insulation of this thermal insulation board is poor, particularly after rotary kiln long-play, thermal insulation board does not have any effect of heat insulation substantially, for this reason, the present invention proposes a kind of thermal insulation board of improvement, specifically can comprise top layer steel plate, heat-barrier material, bottom steel plate, namely between two-layered steel plates, add the significant heat-barrier material of one deck effect of heat insulation, improve the heat-insulating capability of thermal insulation board with this.
It should be noted that, can set up between heat insulation instrument box and rotary kiln some pieces of the present invention improve after thermal insulation board (generally, thermal insulation board after 1 ~ 3 piece of the present invention's improvement can be preferably set, can be determined by actual condition this, the present invention can not limit), the length of every block thermal insulation board is 1000mm ~ 2000mm, and width is 500mm ~ 1000mm, and thickness is 10mm ~ 50mm.
To arrange 2 pieces of thermal insulation boards, wherein the first thermal insulation board and kiln outer surface can at a distance of 100mm ~ 150mm, and the second thermal insulation board and the first thermal insulation board can at a distance of 100mm ~ 300mm, and the second thermal insulation board and heat insulation instrument box can at a distance of 50mm ~ 300mm.Parameter concrete in this example can be presented as:
Rotary kiln body diameter is 5m, kiln surface temperature is 277 DEG C, the box sizes of heat insulation instrument box is 300mm*300mm*300mm, the length of thermal insulation board is 1600mm, thickness is 10mm, kliner coating and the first thermal insulation board are at a distance of 125mm, first thermal insulation board and second layer thermal insulation board are at a distance of 150mm, and the second thermal insulation board and tank surface are at a distance of 105mm.According to simulation result, the ambient temperature of heat insulation instrument box is less than 60 DEG C, and when kiln surface temperature is lower than 200 DEG C, the actual temperature around instrument box can be lower.
4. antenna
In order to the temperature signal after ensureing electronic unit process can be transferred to control centre accurately and reliably, the present invention also improves the installation site of the antenna of wireless transmission.Particularly, generally all by astronomical cycle at the top of heat insulation instrument box (namely in prior art, for connect support bar bottom corresponding to end face), but, need perforate on heat insulation instrument box when considering and fix up an aerial wire, and antenna can expose in atmosphere, rainwater like this etc. just may penetrate into instrument box inside along antenna, affect water proofing property and the effect of heat insulation of instrument box, thus the present invention preferably by astronomical cycle on four side end faces of instrument box.Meanwhile, considering that antenna normally works also is have certain temperature range, and in order to avoid antenna is with in rotary kiln rotary course, around kiln, hot blast affects normal reception and the transmission of antenna, and the present invention is preferably by the lee face of astronomical cycle at instrument box.Schematic diagram shown in Figure 1, according to the rotation mode shown in figure, preferably by astronomical cycle in the left end face of instrument box, namely with thermoelectric cooling unit on same end face.
It should be noted that, in order to ensure the seal of heat insulation instrument box, the perforate for fixing up an aerial wire on heat insulation instrument box needs to carry out encapsulation process by encapsulant, specifically can see above introduce, repeat no more herein.
5. electric power system
Mostly powered to electronic unit by battery system in prior art, certain the present invention also provides direct current by battery system to electronic unit, thermoelectric cooling unit, but consider that the voltage that battery provides is all very small, possibly cannot meet the work requirements of section components, in addition, the service time of battery electric quantity is also limited, and in rotary kiln running process, change battery be a very difficult thing.Meanwhile, the hot environment around rotary kiln also may shorten the service life of battery, and this just further shorten the battery altering cycle.
For this reason, present invention also offers a kind of voltage adjustable, and the TRT of sustainable stable power-supplying, particularly, TRT can be presented as the electric supply installation that device of solar generating, temperature difference electricity generation device etc. are energy saving and environment friendly.
Wherein, temperature difference electricity generation device is a kind of equipment utilizing temperature difference principle to make, specifically can see Fig. 4, show thermo-electric generation principle schematic, the side of the device of the semiconductor element composition that P type and N type junction are closed (namely generating sheet) hereinafter maintains low temperature, opposite side maintains high temperature, and sheet high temperature side (i.e. hot junction) that generates electricity like this will produce hot-fluid to low temperature side (i.e. cold junction) transferring heat energy.That is, flow into generating sheet at heat energy from hot junction, and through generating sheet from the process that cold junction transmits, some heat energy not heat release, but electric energy can be become in generating sheet, export DC voltage and electric current.
In conjunction with above-mentioned principle, temperature difference electricity generation device 19 of the present invention can be presented as Fig. 5, 6, structure shown in 7, hot junction assembly can be comprised, electrification component is (see the label 32 shown in Fig. 5, or the label 44 shown in Fig. 7), cold junction assembly, heat-barrier material is (see the label 34 shown in Fig. 5, not shown in Fig. 7), wherein, electrification component is between hot junction assembly and cold junction assembly, and filling with insulation material is wanted in the region of not placing electrification component between hot junction assembly and cold junction assembly, heat exchange between effective separate hot assembly and cold junction assembly, the impact temperature difference therebetween.
Wherein, electrification component is by multiple generating sheet be connected with series-parallel system, and the hot junction of electrification component and hot junction assembly close contact, and be fixed on rotary kiln outer surface by hot junction assembly, by the radiant heat of rotary kiln for hot junction provides high temperature; The cold junction of electrification component and cold junction assembly close contact, distributed the heat of cold junction by cold junction assembly, for cold junction provides low temperature, after so producing the temperature difference, namely export direct current by power line, electronic device, thermoelectric cooling unit use.
See the formation schematic diagram of temperature difference electricity generation device 19 embodiment 1 shown in Fig. 5, hot junction assembly can be presented as that the heat transfer plate 31 that thermal conductivity is good, cold junction assembly can be presented as the radiator 33 that thermal conductivity is good.
Or, see the partial enlarged drawing shown in the formation schematic diagram of temperature difference electricity generation device 19 embodiment 2 shown in Fig. 6, Fig. 7.
Hot junction assembly can be presented as conductive sole plate 41, heat-conducting plate 43 and at least one heat conduction riser 42.Wherein, heat-conducting plate is connected with conductive sole plate by least one heat conduction riser, and is welded on rotary kiln outer surface by conductive sole plate; Certain gap is left between each heat conduction riser; Conductive sole plate passes through at least one heat conduction riser by the temperature heat trnasfer of rotary kiln outer surface to heat-conducting plate, and is transferred heat to the hot junction of electrification component by heat-conducting plate; By changing the number of heat conduction riser and/or highly regulating the temperature of heat-conducting plate.
Cold junction assembly can be presented as radiating bottom plate 45, weatherseal 47 and at least one heat radiation riser 46.Wherein, weatherseal is connected with radiating bottom plate by least one heat radiation riser, and is contacted with the cold junction of electrification component by radiating bottom plate; Certain gap is left between each heat radiation riser; Weatherseal is obliquely installed away from one end of heat radiation riser, will cause heat radiation riser and radiating bottom plate under natural wind, reduces the temperature of radiating bottom plate and electrification component cold junction, produces temperature difference with the cold junction and hot junction that make electrification component.
As a kind of preferred version, cold junction assembly also can comprise side deep bead 48, and side weatherseal is corresponding with the end face that weatherseal tilts to be arranged, and matches with weatherseal, will cause heat radiation riser and radiating bottom plate under natural wind.So, to rotate with rotary kiln at TRT of the present invention in the process contacted with cooling air, nature cooling air flows in the space that deep bead 47, side deep bead 48, heat radiation riser 46 and radiating bottom plate 45 are formed, because these parts have stop backflow effect to cooling air, therefore the heat-exchange time that can extend between cold junction assembly and cooling air, can cooling-down effect be improved.Natural wind through cold junction assembly, finally the both sides of laterally deep bead outwards can flow out, terminates heat transfer process.
Certainly, radiating subassembly also can comprise the equipment that radiator fan, wind collecting unit etc. can strengthen cooling air wind-force, can improve the heat-sinking capability of radiating subassembly equally.
In order to improve power supply flexibility of the present invention, electric power system can comprise battery powdered device, TRT, voltage collection circuit, power supply switch circuit.Wherein, voltage collection circuit is used for the voltage that power collection generator produces; And judge that whether voltage that voltage collection circuit obtains is lower than predetermined threshold value, if so, then switches battery-powered device and power by power supply switch circuit; If not, then switch and powered by TRT.
So, just can according to the real-time voltage of battery powdered device, TRT, both control cooperatively interacts as electronic unit, thermoelectric cooling unit are powered, and detailed process can be presented as:
If current battery-powered device is powered, the AD acquisition channel built-in by CPU or peripheral AD acquisition chip, the voltage that periodic power collection generator provides, judge whether the voltage that TRT provides reaches upper threshold (this value can guarantee that appliance circuit plate, thermoelectric cooling unit etc. need the equipment accepting power supply normally to work) by program, if meet or exceed this upper threshold, then send command signal by the IO port of CPU to power supply power supply switch circuit, systematic evaluation is powered to by TRT; If do not reach upper threshold, then system does not deal with, and continues battery-powered.
Powered by TRT if current, the AD acquisition channel built-in by CPU or peripheral AD acquisition chip, the voltage that periodic power collection generator sends, judge whether the voltage that TRT provides is less than bottom threshold (this value will cause the needs such as appliance circuit plate, thermoelectric cooling unit to accept the equipment operation irregularity of power supply) by program, if be less than bottom threshold, then send command signal by the IO port of CPU to power supply power supply switch circuit, systematic evaluation is powered to battery-powered device; If be greater than or equal to bottom threshold, then system does not deal with, and continues to be powered by TRT.
It should be noted that, before powering on, be defaulted as powered battery mode, therefore first battery-powered after device start.There are a kind of abnormal conditions, when the voltage provided due to TRT in working is suddenly lower than bottom threshold, electric capacity electricity in equipment cannot keep equipment normally to work a period of time, and have little time to start electrical source exchange program, equipment now can be caused to have a power failure suddenly, and then equipment can again automatically start and enter into state when initially powering on.That is, if two kinds power supply mode power circuit is unobstructed and supply voltage meets the demands time, all can ensure that equipment is in Auto Power On state.
6. the low power dissipation design of electronic unit
If electronic unit adopts battery system to power, due to the finite capacity of battery, and battery capacity also can reduce in high temperature environments, in order to ensure working reliably and with long-term of electronic unit, avoid frequently changing the problem that battery brings, the present invention has also carried out low power dissipation design to electronic unit, to extend the service life of battery, specifically can embody as follows:
(1) IC chip on circuit board all selects low-power chip, and particularly mainly consume energy chip CPU, needs the CPU selecting low-power consumption, and require that CPU has low-power consumption mode;
(2) in order to reduce the power consumption of CPU, when content with funtion demand, the dominant frequency of CPU is reduced as far as possible;
(3) turn off all untapped peripheral hardwares of CPU, such as the module such as UART peripheral hardware, CAN peripheral hardware, is set to input port by untapped for CPU IO port;
(4) wake-up period of preset electronic parts, low-power consumption mode is in when CPU is flat, consume electric energy very little, after wake-up period arrives, CPU is waken up from low-power consumption mode and is entered mode of operation, to execute the task program, and enter low-power consumption mode after executing relative program at once, so can reduce the electric energy that CPU consumes.In order to ensure the normal work of system, can set wake-up period according to system function requirement, in theory, wake-up period value is longer, and CPU power consumption is lower.
Being described in detail the embodiment of the present invention above, applying detailed description of the invention herein to invention has been elaboration, the explanation of above embodiment just understands method and apparatus of the present invention for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a rotary kiln wireless temperature measurement system, rotary kiln has at least one temperature detection hole, and each temperature element inserts in a described temperature detection hole respectively; Described temperature element is connected with electronic unit by signal cable, temperature measurement signal is transferred to described electronic unit, ground control centre is transferred to by antenna with communication by after described electronic unit process, it is characterized in that, described system also comprises heat insulation instrument box, at least a set of thermoelectric cooling unit
Described heat insulation instrument box is arranged on rotary kiln by support bar, and described heat insulation instrument box comprises inwall, thermal insulation layer, outer wall, and it is inner that described electronic unit is positioned at described heat insulation instrument box;
Described thermoelectric cooling unit accepts the direct current that electric power system provides, the two sides of described thermoelectric cooling unit is made to form heat absorbing side and cold side respectively, described thermoelectric cooling unit is fixedly mounted on described heat insulation instrument box by described heat absorbing side, for reducing the environment temperature of described heat insulation instrument box inside.
2. system according to claim 1, is characterized in that, described heat insulation instrument box and rotary kiln outer surface are at a distance of 300mm ~ 1400mm.
3. system according to claim 1, is characterized in that, described heat insulation instrument box is arranged on rotary kiln by support bar, comprising:
An installing plate is welded in one end that described support bar is connected with described heat insulation instrument box bottom end face, and the area of described installing plate is 1/4 ~ 1/2 of described bottom end face area;
Described bottom end face and described installing plate, by weld or securing member is connected, to make described heat insulation instrument box be fixed on described support bar, and are arranged on rotary kiln by described support bar.
4. system according to claim 1, is characterized in that, any one in four side end faces of described heat insulation instrument box of described astronomical cycle;
Perforate for fixing up an aerial wire on described heat insulation instrument box carries out encapsulation process by encapsulant.
5. system according to claim 1, is characterized in that, described thermoelectric cooling unit is fixedly mounted on the side end face of described heat insulation instrument box, and when rotary kiln rotates, described thermoelectric cooling unit is positioned at lee face.
6. system according to claim 1, is characterized in that, described electric power system comprises battery powdered device and/or TRT.
7. system according to claim 6, is characterized in that, described TRT is device of solar generating or temperature difference electricity generation device.
8. system according to claim 6, is characterized in that, described electric power system also comprises voltage collection circuit, power supply switch circuit,
The voltage that described voltage collection circuit produces for gathering described TRT;
Described power supply switch circuit judges that whether voltage that described voltage collection circuit obtains is lower than predetermined threshold value, if so, then switches and powered by described battery powdered device; If not, then switch and powered by described TRT.
9. the system according to any one of claim 1 ~ 8, is characterized in that, is also provided with at least one deck thermal insulation board between described heat insulation instrument box and rotary kiln outer surface, and described thermal insulation board is fixed on described support bar and/or rotary kiln outer surface;
Described thermal insulation board comprises top layer steel plate, heat-barrier material, bottom steel plate;
The length of described thermal insulation board is 1000mm ~ 2000mm, and width is 500mm ~ 1000mm, and thickness is 10mm ~ 50mm.
10. the system according to any one of claim 1 ~ 8, is characterized in that, preset the wake-up period of described electronic unit, described electronic unit is in low-power consumption mode, is only just waken up after described wake-up period arrives and enters mode of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310661455.3A CN104697327A (en) | 2013-12-09 | 2013-12-09 | Wireless temperature measurement system for rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310661455.3A CN104697327A (en) | 2013-12-09 | 2013-12-09 | Wireless temperature measurement system for rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104697327A true CN104697327A (en) | 2015-06-10 |
Family
ID=53344704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310661455.3A Pending CN104697327A (en) | 2013-12-09 | 2013-12-09 | Wireless temperature measurement system for rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104697327A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994730A (en) * | 2016-10-27 | 2018-05-04 | 中冶长天国际工程有限责任公司 | A kind of power generator and rotary kiln for rotary kiln |
| CN108932765A (en) * | 2017-05-24 | 2018-12-04 | 北京卡多宝信息技术有限公司 | A kind of smart lock and its control method, intelligent lock system |
| CN111256466A (en) * | 2020-01-19 | 2020-06-09 | 广州中环万代环境工程有限公司 | Temperature difference power generation rotary kiln wireless temperature measuring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345873A (en) * | 1964-06-05 | 1967-10-10 | Otto G Lellep | Rotary kiln temperature measurement |
| CN1619245A (en) * | 2003-06-29 | 2005-05-25 | 胡炳坤 | Rotary kiln temperature pressure signal transmission device |
| CN2814671Y (en) * | 2004-12-06 | 2006-09-06 | 邱洁华 | Semiconductor cooling and radiating device of CPU |
| CN2831423Y (en) * | 2005-09-13 | 2006-10-25 | 中兴通讯股份有限公司 | Active radiator of large-scale integrated chip |
| CN200986385Y (en) * | 2006-08-02 | 2007-12-05 | 陈竹林 | Rotary kiln wireless temperature measuring equipment |
-
2013
- 2013-12-09 CN CN201310661455.3A patent/CN104697327A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345873A (en) * | 1964-06-05 | 1967-10-10 | Otto G Lellep | Rotary kiln temperature measurement |
| CN1619245A (en) * | 2003-06-29 | 2005-05-25 | 胡炳坤 | Rotary kiln temperature pressure signal transmission device |
| CN2814671Y (en) * | 2004-12-06 | 2006-09-06 | 邱洁华 | Semiconductor cooling and radiating device of CPU |
| CN2831423Y (en) * | 2005-09-13 | 2006-10-25 | 中兴通讯股份有限公司 | Active radiator of large-scale integrated chip |
| CN200986385Y (en) * | 2006-08-02 | 2007-12-05 | 陈竹林 | Rotary kiln wireless temperature measuring equipment |
Non-Patent Citations (1)
| Title |
|---|
| 钱亚平: "回转窑中部温度装置的应用研究", 《安徽冶金》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994730A (en) * | 2016-10-27 | 2018-05-04 | 中冶长天国际工程有限责任公司 | A kind of power generator and rotary kiln for rotary kiln |
| CN107994730B (en) * | 2016-10-27 | 2019-09-13 | 中冶长天国际工程有限责任公司 | A kind of power generator and rotary kiln for rotary kiln |
| CN108932765A (en) * | 2017-05-24 | 2018-12-04 | 北京卡多宝信息技术有限公司 | A kind of smart lock and its control method, intelligent lock system |
| CN111256466A (en) * | 2020-01-19 | 2020-06-09 | 广州中环万代环境工程有限公司 | Temperature difference power generation rotary kiln wireless temperature measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201332372Y (en) | Residual heat thermoelectric power generation system using circulating liquid cooling | |
| CN102082133B (en) | Temperature-controlled radiator | |
| WO2009140875A1 (en) | Machine cabinet and temperature control system for machine cabinet | |
| CN106486719A (en) | A kind of power battery thermal management system based on semiconductor chilling plate | |
| CN101534077A (en) | Solar energy thermo-electric generation device | |
| CN207179778U (en) | Wall painting type graphene heats electric heater | |
| CN105407684B (en) | Locomotive electric cad system cabinet cooling device and locomotive electric cad system cabinet | |
| CN104697327A (en) | Wireless temperature measurement system for rotary kiln | |
| CN204271952U (en) | Rotary kiln waste heat recovery power generation facility | |
| CN205811011U (en) | A kind of bidirectional flow battery thermal management system | |
| CN103941770A (en) | Energy-saving wireless intelligent controlled temperature control system and resistance heating element | |
| CN203068872U (en) | Semiconductor auxiliary refrigerating system | |
| CN204669250U (en) | A kind of temperature difference electricity generation device and illuminator utilizing boiler slag removal used heat | |
| CN104702148B (en) | Power supply unit and power supply system | |
| CN205209001U (en) | Energy -concerving and environment -protective type refrigerating plant | |
| CN200941653Y (en) | Thermal controller of CCD camera | |
| CN116867249A (en) | Heat dissipation method and related equipment | |
| CN207050021U (en) | Kitchen range self charger | |
| CN202254769U (en) | Solar energy rotary kiln wireless temperature measurement device | |
| CN204167442U (en) | Lithium battery group temperature monitoring system | |
| CN104702149B (en) | Power supply | |
| CN207179779U (en) | Portable graphene heats electric heater | |
| CN109297190A (en) | A kind of thermal storage electric boiler and its control system | |
| KR102423721B1 (en) | IoT piping temperature monitoring system using thermoelectric power module | |
| CN104331110A (en) | Greenhouse temperature adjusting method based on semiconductor temperature control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150610 |
|
| RJ01 | Rejection of invention patent application after publication |