CN1112736C - Thermoelectric generator for heat energy meter - Google Patents
Thermoelectric generator for heat energy meter Download PDFInfo
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- CN1112736C CN1112736C CN 99105498 CN99105498A CN1112736C CN 1112736 C CN1112736 C CN 1112736C CN 99105498 CN99105498 CN 99105498 CN 99105498 A CN99105498 A CN 99105498A CN 1112736 C CN1112736 C CN 1112736C
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- heat
- transducer
- thermoelectric
- thermoelectric generator
- radiator
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Abstract
The present invention discloses a thermoelectric generator for a pipeline type heat energy meter. The outer wall of a heat source pipe (2) is provided with a plurality of heat collecting blocks (3) which are respectively fixed to a thermoelectric energy transducer (4) and a matched radiator (5). After the heat source pipe (2) is connected to the heat supply pipeline in series, when hot water flows in the heat supply pipe, the heat quantity is transmitted to the energy transducer by the heat collecting blocks. The afterheat is emitted to peripheral space by the radiator which is tightly stuck to the cold surface of the energy transducer, and both sides of the energy transducer form temperature difference. Owing to the Seebeck effect of a thermoelement, the output end of the energy transducer generates thermoelectromotive force (namely open circuit voltage) which is transformed through a voltage increasing and stabilizing module to supply stable rated voltage for a heat energy meter. Because the thermoelectric transducer and the voltage increasing and stabilizing module are solid state devices and are sealed by polyurethane foam plastic, the thermoelectric transducer and the voltage increasing and stabilizing module can continuously, safely and stably work for a long time.
Description
The present invention relates to a kind of duct type heat supply and can show the thermoelectric generator of usefulness, belong to the physical power source technical field.
Since nineteen nineties, along with the raising of living standards of the people, the reinforcement of public's environmental protection consciousness, warming adopts the mode of central heating to become the developing direction of modern urban construction.For the disbursement and sattlement between standard heat supply side and the heating user, industrially developed country such as Europe, the United States adopt the heat energy table to come the metering heating amount.It is reported that heating heat energy table is progressively promoted in the decision of China relevant department in the heating area.At present, external general alternating current or the high power lithium battery of using is as heat energy apparent source (seeing the product introduction of Denmark Kamtrup company).When adopting alternating current to make instrument power, outage can't write down heating load.Heat energy table internal flow high pressure (about 1.0 MPas), high temperature (70～80 ℃) hot water if appliance circuit infiltrates moisture content or power circuit damages, may make whole hot duct have 220 volts of alternating currents, and consequence is serious.Adopt high power lithium battery (lithium-thionyl chloride battery) to make power supply, need periodic replacement, and there is the hidden danger that is easy to explode in this battery, generally be not suitable for home-use.
Thermoelectric generator is a solid-state power source, belongs to the class special power supply in the physical power source.It utilizes the thermoelectric effect of compound semiconductors such as lead telluride, bismuth telluride to make.Existing thermoelectric generator adopts radioisotope or hydrocarbon fuel combustion as thermal source mostly, is used for occasions such as deep space space vehicle, unattended operation weather station, oil and gas pipeline cathodic protection.The structure of existing thermoelectric generator can not be used as the heat energy apparent source.
Thermoelectric generator is a kind of power supply of soft output characteristic, and promptly output voltage changes along with the size of load, for stable operating voltage is provided, and must additional voltage stabilizing circuit.Consumption is the milliwatt level because heat energy is boasted of one's bit of contribution, and operating voltage is 5 volts ± 0.2 volt.Thermoelectric generator output voltage in this power bracket has only 0.8～1 volt, can not satisfy the voltage request of heat energy table.
The objective of the invention is at the problems referred to above, a kind of thermoelectric generator of making the heat energy apparent source is provided.It utilizes the hot water in the heat supply pipeline to make thermal source, by thermoelectric transducer and the built-in electronic Voltage stabilizing module that boosts, can be long-term, safety, continuously for the heat energy table provides stabling current, need not safeguard, need not add other energy.
Embodiment of the present invention are such: fix a thermoelectric transducer 4 and supporting aluminium radiator 5 on the heat-collecting block 3 of heat source tube 2 outer walls respectively, the polyurethane blowing agent is injected in gap between heat source tube 2 and radiator 5, form the thermal insulation layer 8 of a densification, and will boost Voltage stabilizing module 6 be sealed in the thermal insulation layer after transducer is connected, receive the outside with will the boost output of Voltage stabilizing module of lead, constitute the thermoelectric generator that the heat energy table is used.
By flange 1 (or screw thread) heat source tube 2 of thermoelectric generator and the flowmeter of heat energy table are connected in series.Have flow of hot water out-of-date in heating tube, heat just is sent to plate transducer 4 by the heat-collecting block 3 on heat source tube 2 tube walls, and waste heat is dispersed into surrounding space by the radiator 5 that is close on the transducer 4, forms uniform temperature difference Δ T on the two sides of transducer 4
D℃.Because the Seebeck effect (being thermoelectric effect) of transducer 4 internal difference in temperature electric devices, produce thermoelectromotive force E (being open circuit voltage) at the output of transducer:
E=N α
PNΔ T
iWherein: α
PNBe the mean temperature difference electromotive force rate of a pair of thermoelement, unit be microvolt/℃;
N is the thermoelement logarithm of series connection in the transducer;
Δ T
iBe the temperature difference of thermoelement cool and heat ends, its numerical approximation equals the degree at transducer two ends
Difference Δ T
DUnit is ℃.
Though the operating current I=E/ (r+RL) of transducer output is unsettled, after the conversion through the Voltage stabilizing module 6 that boosts, thermoelectric generator just can have been exported stable rated voltage.
Compared with prior art, the present invention has following advantage: there is not the hidden danger of getting an electric shock and exploding in (1) safety; (2) can long-term continuous operation.Because the thermoelectric transducer and the Voltage stabilizing module that boosts belong to solid state device, and again through the polyurethane foam plastic sealing, water proof, anti-air oxidation, useful life was greater than 15 years.As long as in the heat source tube hot water flow is arranged, just can provide power supply, saved the trouble of changing battery.(3) thermoelectric transducer output voltage can satisfy the specified requirement of heat energy table after the Voltage stabilizing module conversion of boosting, and is not subjected to the influence of hot water temperature, ambient temperature, load current fluctuation.(4) simple in structure, duration of work need not add other energy, and need not safeguard, therefore, total use cost is low.
Below in conjunction with drawings and Examples the present invention is described in further detail.
Accompanying drawing 2 is the generalized section of the thermoelectric generator for heat energy meter of the embodiment of the invention 2
Accompanying drawing 3 is the electrical schematic diagram of the Voltage stabilizing module that boosts.
Below in conjunction with drawings and Examples the present invention is described in further detail.Embodiment 1: latus rectum is the thermoelectric generator that the heat energy table of DN80 millimeter heat supply main is used.In accompanying drawing 1, heat source tube 2 is made for cast iron, steel or brass tube, and there is adpting flange 1 at two ends, can insert heat supply pipeline.Heat source tube 2 internal diameters are 80 millimeters, 6 millimeters of wall thickness.Flange 1 external diameter is 200 millimeters, and the centre-to-centre spacing of 8 bolts hole is 160 millimeters, and all the other sizes are all with reference to national standard (GB9114～9116,9119,9123-88).Heat source tube 2 length are 240 millimeters, and two platform heat-collecting blocks 3 of section processing therein are symmetrically distributed in the tube wall both sides.The top of platform is one 45 millimeters * 45 millimeters plane (fineness is 3.2), and root section is of a size of 60 millimeters * 60 millimeters, helps gathering hot-fluid.Two planes should be parallel.At two wide 2 millimeters, dark 2 millimeters annular grooves of outer wall processing, be positioned at the both sides of heat-collecting block, be spaced apart 100 millimeters, be convenient to install sealing plate 7.
Transducer 4 adopts plate armature, and upper and lower two flat boards are the aluminium sheet that potsherd or surface insulation are handled.By designing requirement flat board is carried out metallization pattern and handle, so that can weld thermoelement.Thermoelement adopts the bismuth telluride-base alloy material to make.Use soldering tech, 127 pairs of P types and N type thermoelectric monomer are welded between two blocks of potsherds in the mode of connecting by interconnected of copper (thick 0.5 millimeter), form a sectional area and be 40 millimeters * 40 millimeters plate thermoelectric transducer.
Thick 4 millimeters of aluminium radiator 5 substrates, there are 13 fins in the outside, and outer rim is semicircular arc, and radius is 90 millimeters, thick 1.5 millimeters of fin top, 5 millimeters at interval of thick 3 millimeters of roots, fin, the radiator overall width is 100 millimeters.There is a cubic terrace with edge in the inboard central authorities of radiator base plate, and face size is 45 millimeters * 45 millimeters, is the position that contacts with transducer 4.
Stainless steel screw with the M4 specification is fixed on radiator 5 and transducer 4 on the heat-collecting block 3, and transducer 4 both sides evenly are coated with the skim heat-conducting silicone grease, reduces the thermal resistance of contact-making surface, improves conversion efficiency of thermoelectric.
In the cavity between radiator 5 and heat source tube 2, inject the polyurethane blowing agent, form the thermal insulation layer 8 of a densification, protect the semi-conducting material in the transducer simultaneously, also strengthened the mechanical strength of electric organ self.
The output line of two transducers 4 is together in series, inserts the Voltage stabilizing module 6 that boosts.In accompanying drawing 3, IC1 adopts the step lift-type DC converter circuit of the U.S. U.S. letter company, and other element is all seen among the figure and indicated.When input voltage or load current variation, the automatic regulating impulse frequency of IC1, regulated output voltage is a rated value.With epoxy resin the entire circuit plate is enclosed in the module, becomes one the three end Voltage stabilizing module that boosts.This module is imbedded in the polyurethane foam plastic 8 between sealing plate 7 and the radiator 5, and its out-put supply line is drawn from sealing plate 7 borings, uses the thermosol sealing and fixing then.
For the ease of heat energy table installation testing transducer, transducer mounting pipe 9 of processing on heat energy pipe 2, height is 70 millimeters, the installation screw thread is G1/2B.
Embodiment 2: latus rectum is the thermoelectric generator that the family of DN20 millimeter is used with heating heat energy table.In accompanying drawing 2, heat source tube 2 is made for steel or brass, and it is G1B that two ends connect screw thread, can insert heat supply pipeline.Heat source tube 2 internal diameters are 20 millimeters, and 4 millimeters of wall thickness, radiator base plate are that one 100 millimeters * 100 millimeters * 4 millimeters aluminium sheet upside has 15 fins, and fin is high 25 millimeters, thick 1.5 millimeters of top, thick 3 millimeters of root.This radiator can be cut into aluminium section bar.Heat-collecting block 3 in this example, transducer 4, and the Voltage stabilizing module 6 that boosts, sealing plate 7, sealing heat insulation cellular plastics 8 is all identical with embodiment 1.
Claims (4)
1, a kind of duct type heat supply can be shown the thermoelectric generator of usefulness, by heat source body, the thermoelectric transducer, radiator, sealed insulation layer is formed, it is characterized in that: heat source body wherein is by heat source tube [2], heat-collecting block [3] constitutes, each heat-collecting block is fixed a thermoelectric transducer [4] and supporting aluminium radiator [5] respectively, described sealed insulation layer is a polyurethane foam plastics, the sealing layer is filled in the gap between radiator [5] and the heat source tube [2], described electric organ also comprises the Voltage stabilizing module that boosts [6], the output voltage of transducer [4] is carried out conversion, for the heat energy table provides stable power.
2, thermoelectric generator according to claim 1 is characterized in that: described heat source tube [2] is to be serially connected between the heat supply pipeline, utilizes interior hot water of heating tube or steam as thermal source, and its outer wall has several heat-collecting blocks [3].
3, thermoelectric generator according to claim 1, it is characterized in that: described transducer adopts plate thermoelectric transducer [4], its hot and cold is the potsherd of metallization pattern processing or the aluminium sheet of insulation processing, and thermoelement is made with the bismuth telluride-base alloy material.
4, thermoelectric generator according to claim 1 is characterized in that: the described Voltage stabilizing module that boosts [6], the unstable low-voltage of thermoelectric transducer output is transformed into burning voltages such as 3 volts, 5 volts, and be used as the heat energy apparent source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99105498 CN1112736C (en) | 1999-04-08 | 1999-04-08 | Thermoelectric generator for heat energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99105498 CN1112736C (en) | 1999-04-08 | 1999-04-08 | Thermoelectric generator for heat energy meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1240312A CN1240312A (en) | 2000-01-05 |
| CN1112736C true CN1112736C (en) | 2003-06-25 |
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ID=5272009
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99105498 Expired - Fee Related CN1112736C (en) | 1999-04-08 | 1999-04-08 | Thermoelectric generator for heat energy meter |
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| CN (1) | CN1112736C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291057A (en) * | 2011-08-15 | 2011-12-21 | 赵蒙 | Temperature difference power generating device implemented on running vehicle |
| CN102594218A (en) * | 2012-02-22 | 2012-07-18 | 大连交通大学 | Low-temperature heat power generating device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900485A (en) * | 2011-07-24 | 2013-01-30 | 马建平 | Thermal temperature-difference power machine |
| CN102788617B (en) * | 2012-07-18 | 2016-07-06 | 湖南常德牌水表制造有限公司 | A kind of enclosed type ultrasonic water meter and heat energy meter |
| CN104677524A (en) * | 2015-02-06 | 2015-06-03 | 浙江华立能源技术有限公司 | Thermal inductance type heat meter and application thereof |
| CN105042863B (en) * | 2015-03-27 | 2019-06-04 | 青岛海尔科技有限公司 | A kind of detection device and method of water heater temperature |
| GB201517849D0 (en) * | 2015-10-08 | 2015-11-25 | Comfort John J And Tenac Phillip J Van And Aquacommand Ltd And Randles Nicola J | Smart water meter system |
-
1999
- 1999-04-08 CN CN 99105498 patent/CN1112736C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291057A (en) * | 2011-08-15 | 2011-12-21 | 赵蒙 | Temperature difference power generating device implemented on running vehicle |
| CN102594218A (en) * | 2012-02-22 | 2012-07-18 | 大连交通大学 | Low-temperature heat power generating device |
| CN102594218B (en) * | 2012-02-22 | 2015-04-08 | 大连交通大学 | Low-temperature heat power generating device |
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| Publication number | Publication date |
|---|---|
| CN1240312A (en) | 2000-01-05 |
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