CN1161877C

CN1161877C - Thermobattery for power supply calorimeter (termal-energy meter)

Info

Publication number: CN1161877C
Application number: CNB001007955A
Authority: CN
Inventors: 刘晓光; 王凤跃; 赵彦民
Original assignee: Electronics Inst No18 Ministry Of Information Industry
Current assignee: Electronics Inst No18 Ministry Of Information Industry
Priority date: 2000-02-14
Filing date: 2000-02-14
Publication date: 2004-08-11
Anticipated expiration: 2020-02-14
Also published as: CN1264210A

Abstract

The present invention discloses an outer buckled type thermoelectric cell which is used for supplying power for a cold and heat measuring meter. A transducer group (2) and a matched radiator (3) are fixed on the platform surface of a heat-collecting block (1). After the thermoelectric cell is fixed to a heat supplying pipeline, the heat of hot water in the pipeline is transmitted to the transducer group by the heat-collecting block, the afterheat is emitted into peripheral space by the radiator which is tightly stuck to the cold surface of the transducer group, and both surfaces of the transducer form temperature difference. Owing to the Seebeck effect of a thermoelement, the output end of the transducer group generates thermoelectromotive force transformed by an electronic module. When the thermoelectromotive force achieves rated voltage, a suitable operating power supply is supplied to the cold and heat measuring meter. When low-temperature water flows in the pipeline, a power supply can also be supplied to the cold and heat measuring meter. Because the thermoelectric cell is a solid state device, the operation of the thermoelectric cell has the advantages of long term, continuity, safety and stabilization.

Description

A kind of thermoelectric cell for the hot-cold measurer power supply

Technical field

The present invention relates to a kind of exterior buckle type thermoelectric cell, belong to the physical power source technical field for the hot-cold measurer power supply.

Background technology

Applicant of the present invention once proposed a kind of duct type hot-cold measurer thermoelectric generator in its previous Chinese patent application 99105498.9 and 99207907.1, this thermoelectric generator is to cooperate realization concentrated supply of heating in the city, household metering to charge and the supply unit of invention.It is to utilize that hot water generates electricity as thermal source in the pipeline, has simple in structure, duration of work and need not add advantages such as other energy, Maintenance free, long working life, use cost are low, belongs to the environmental protection power supply.

Because the heat source tube of the heat source body of above-mentioned duct type thermoelectric generator must be connected in series into heat supply pipeline, is suitable for installing the initial construction stage of heat supply pipeline.If in existing heating system, use the power supply of duct type thermoelectric generator instead as hot-cold measurer, heat source tube is connected in series into heat supply pipeline need changes pipeline, difficulty of construction is bigger.And the manufacturing cost of heat source tube accounts for 1/3～1/2 of the whole cost of duct type thermoelectric generator, and weight accounts for 1/2～2/3 of overall weight.To alleviate the weight of thermoelectric generator greatly if can cancel heat source tube, reduce its manufacturing cost.In addition, the Voltage stabilizing module that boosts that above-mentioned thermoelectric generator adopted, though can successfully be applied to the hot-cold measurer of more domestic manufacturer production, but be applied to Danfoss, during the hot-cold measurer of companies such as Ka Mulupu, also there is a problem: just beginning the heat supply stage, because the heat-collecting block temperature rises gradually, thereby the output voltage of electric organ also is to rise to the voltage stabilizing value that sets gradually, the neither one transition stage, can not satisfy the requirement of single-chip microcomputer " electrification reset ", thereby need add a normally closed sensitive switch at the output of thermoelectric generator, behind output voltage stabilization, press sensitive switch, realize " electrification reset " of single-chip microcomputer, could guarantee the operate as normal of hot-cold measurer.

Summary of the invention

Purpose of the present invention is exactly at the problems referred to above, a kind of exterior buckle type thermoelectric cell as the hot-cold measurer power supply is provided, it utilizes the exterior buckle type heat-collecting block that is fixed to the heat supply pipeline outer wall to gather heat, by thermoelectric transducer group and boost voltage stabilizing and electronic switch module, can be long-term, safety, provide stable working power for hot-cold measurer continuously.

The object of the present invention is achieved like this: for the exterior buckle type thermoelectric cell of hot-cold measurer power supply is made up of heat source body, thermoelectric transducer group, radiator, sealed insulation layer and electronic module.Its heat source body is to be made of the exterior buckle type heat-collecting block 1 that is fixed on the heat supply pipeline outer wall, fixedly thermoelectric transducer group 2 and supporting aluminium alloy heat radiator 3 on the heat-collecting block 1, at its perimeter bond plastic septum 4, in the cavity that heat-collecting block 1, radiator 3 and dividing plate 4 surround, inject the polyurethane blowing agent, form the sealed insulation layer 5 of a densification, and with electronic module 6 be sealed in the thermal insulation layer after the thermoelectric transducer group is connected, with lead the outside thermoelectric cell that hot-cold measurer is used that constitutes is received in the output of electronic module 6.The one side of exterior buckle type heat-collecting block 1 is a platform, can lay thermoelectric transducer group 2, another side is the circular arc semi-cylindrical, with heat supply pipeline outer wall tight connecting, its four jiaos are respectively stretched out a fritter that through hole is arranged, and can be fixed on the pipeline with 4 bolts and metal cassette tape.

Electronic module 6 comprises two parts: adopt the step lift-type of the U.S. U.S. letter company integrated regulator MAX859 that boosts, be designed to export adjustable voltage stabilizing circuit; Adopt two low power triodes and resistor network to be designed to electronic switch, eliminate the slow uphill process of operating voltage, realize instantaneous powering up, guarantee single-chip microcomputer desired " electrification reset " function.

When hot water flow (during heat supply) is arranged in the pipeline, or there is water at low temperature to flow (during cooling), because the effect of radiator, it is poor to have uniform temperature on the two sides of thermoelectric transducer group, thereby just can generate electricity, and the conversion of process electronic module, for hot-cold measurer provides suitable working power.

Provide technology to compare with previous Chinese patent application 99105498.9 and 9920790.1, the present invention except have equally safety, Maintenance free, can long-term continous-stable work, help the characteristics such as environmental protection, also have the following advantages: (1) is convenient to install: adopt 4 bolts at any time thermoelectric cell to be installed on the pipeline, need not to change original pipe network, easy construction; (2) volume-diminished 1/2, weight saving 2/3; (3) the exterior buckle type thermoelectric cell does not directly contact the high pressure heat transfer medium, has saved withstand voltage cost input; (4) because materials are saved and the simplification of manufacturing procedure, make the complete machine cost can reduce half; (5) possess the function that powers up of instantaneous starting, guarantee single-chip microcomputer " electrification reset ".

Description of drawings

Below in conjunction with embodiment the present invention is described in further detail.

Fig. 1 is the structural representation of the thermoelectric cell of the embodiment of the invention.

Fig. 2 is the machining three-view diagram of exterior buckle type heat-collecting block 1 among Fig. 1.

Fig. 3 is the circuit theory diagrams of electronic module 6 among Fig. 1.

Embodiment

Embodiment: cooperating latus rectum is the exterior buckle type thermoelectric cell that DN32 millimeter heat supply corridor main is used.In accompanying drawing 1, heat-collecting block 1 is made for aluminium alloy or brass, the three-view diagram that Fig. 2 uses for its machine work.The one side of heat-collecting block 1 is the platform of 102mm * 64mm, and its surface smoothness is 3.2, can lay 4 thermoelectric transducers.The another side of heat-collecting block 1 is a circular arc, and radius is R21mm, matches with the radius of DN 32mm heat supply pipeline outer wall.It is the circular hole of Φ 8mm that a diameter is respectively arranged on four jiaos of fritters that stretch out, and can penetrate the M6 bolt, cooperates the metal cassette tape of semicircle shape, makes heat-collecting block 1 closely embrace the outer wall of heating tube.Also can be with two symmetrical heating tube outer walls that are fixed on of thermoelectric cell, to satisfy the power requirement of big power consumption hot-cold measurer.The tube wall exposed part is incubated with the insulation material parcel.

Thermoelectric transducer group 2 adopts plate armature, and two flat boards are the aluminium sheet that potsherd or surface insulation are handled up and down.By designing requirement flat board being carried out metallization pattern handles, so that can weld thermoelement, thermoelement adopts the bismuth telluride-base alloy material to make (No.18 Electronics Inst., Ministry Techonlogy and Telecom Industries of Informati can provide), use soldering tech, 127 pairs of P types and N type thermoelectric monomer are welded between two blocks of potsherds by the mode of interconnected of copper (thick 0.5mm) with series connection, form the plate shaped thermoelectric transducer that a sectional area is 30mm * 30mm.The embodiment of the invention selects for use the thermoelectric transducer of 4 tile height unanimities to be connected into thermoelectric transducer group 2.

Aluminium radiator 3 adopts wide for the 112mm fin is high for the aluminium section bar of 24mm is cut into, and processes the plane of 82mm * 60mm in its substrate bottom surface, and fineness is 3.2.Bore the hole of 4 Φ 4 in the substrate relevant position,, fix 4 thermoelectric transducers so that be connected with heat-collecting block 1 with the screw of M3.The fin of radiator all passes through anodic oxidation, is black.Stainless steel screw with the M3 specification is fixed on radiator 3 and thermoelectric transducer group 2 on the heat-collecting block 1, and thermoelectric transducer 2 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 that heat-collecting block 1, radiator 3 and dividing plate 4 surround, inject the polyurethane blowing agent, form the thermal insulation layer of a densification, protect the semi-conducting material in the thermoelectric transducer simultaneously, also strengthened the mechanical strength of thermoelectric cell self.

The circuit theory diagrams of the electronic module 6 among Fig. 1 as shown in Figure 3, wherein IC1 adopts the step lift-type of the U.S. U.S. letter company integrated regulator-MAX859 that boosts, resistance R 1, R2, R3 are respectively 10K Ω, 200K Ω, 100K Ω, capacitor C 1, C2, C3 are respectively 22 μ f, 100 μ f, 0.1 μ f, inductance L 1 is 47 μ h, and rectifier diode is IN5817.When input voltage or load current variation, the automatic regulating impulse frequency of IC1, regulated output voltage is a rated value.Among Fig. 3 in the frame of broken lines circuit be the voltage jump circuit, form by PNP and NPN triode and resistor network.When A point current potential raise gradually, the potential-divider network of being made up of R8 and R7 rose the base voltage of BG2 thereupon in proportion.In case when the base voltage of BG2 rose to 0.6V, the BG2 conducting produced the BG1 base current, triggers the BG1 conducting, its collector electrode output voltage.BG1, BG2 are respectively 9012,9013 low-power transistors among Fig. 3, and resistance R 4, R5, R6, R7 are 56K Ω, and R8 is 150K Ω.When the hot-cold measurer of institute's adapted does not need " electrification reset " function, can cancel the voltage jump circuit in the frame of broken lines, to save cost.With epoxy resin the entire circuit plate is encapsulated in the module, imbeds in the polyurethane foam plastic 5 between radiator 3 and the dividing plate 4, its out-put supply line is drawn from dividing plate 4 borings, uses its root of thermosol sealing and fixing then.

Claims

1. thermoelectric cell for hot-cold measurer power supply usefulness, form by heat source body, thermoelectric transducer group, radiator, sealed insulation layer and electronic module, it is characterized in that: heat source body is made of exterior buckle type heat-collecting block (1), described exterior buckle type heat-collecting block (1) one side is a flatbed, lays thermoelectric transducer group (2); Radiator (3) places on the thermoelectric transducer group, and radiator, thermoelectric transducer group are fixed on the exterior buckle type heat-collecting block; Exterior buckle type heat-collecting block (1) is the circular arc semi-cylindrical with the mating surface of pipeline, and its curvature is consistent with pipeline outer wall to be installed, and the heat supply pipeline outer wall that links closely is installed; With electronic module (6) be sealed in the sealed insulation layer after the thermoelectric transducer group is connected, with lead the outside is received in the output of electronic module (6), constitute the output of the thermoelectric cell that this hot-cold measurer uses; Electronic module (6) is made up of boost integrated regulator and voltage jump circuit of the confession selecting for use of step lift-type, has the function that powers up of instantaneous starting.

2. thermoelectric cell according to claim 1 is characterized in that: four jiaos of described exterior buckle type heat-collecting block (1) are respectively stretched out a fritter that through hole is arranged, and can be fixed on the pipeline with 4 bolts and semicircle shape metal cassette tape.

3. thermoelectric cell according to claim 1, it is characterized in that: described thermoelectric transducer group (2) adopts 2～4 plate thermoelectric transducers to be in series, hot and cold of the thermoelectric transducer 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 cell according to claim 1 is characterized in that: described electronic module (6) comprises that one can have the function that powers up of instantaneous starting for the voltage jump circuit of selecting for use of being made up of two triodes and resistor network.