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Temperature-sensing conversion thermometer of radiator

A radiator and heat conversion technology, which is applied in the field of distributing meters for calculating the heat consumption of radiators, and can solve the problems of affecting the evaporation intensity of liquid, low sensitivity and resolution of the meter, and affecting the accuracy of readings.

Inactive Publication Date: 2006-08-16
TIANJIN UNIV
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  • Description
  • Claims
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Problems solved by technology

The problem with this kind of heat meter is that the evaporation tube is a temperature-sensitive element embedded in the heat conductor, and it is difficult to make the evaporation tube and the heat conductor closely contact, which affects the evaporation intensity of the liquid. The sensitivity and resolution of the instrument are low, and it is inevitable. Large error; observe the height of the evaporating liquid with a scale scale as a display, it is difficult to read and affect its accuracy

Method used

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  • Temperature-sensing conversion thermometer of radiator
  • Temperature-sensing conversion thermometer of radiator
  • Temperature-sensing conversion thermometer of radiator

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments. The heat conducting plate 1 is an aluminum plate with an area of ​​30×20 mm and a thickness of 2 mm. The conversion temperature sensor 2 is pasted and fixed on the heat conducting plate 1 . The conversion temperature sensor 2 is an integrated circuit chip TCN75 with a two-wire serial interface, which contains a 9-bit A / D converter and adopts I 2 The two-wire serial interface of the C bus, the normal operating current is 250μA, and the operating current is 1μA in standby mode. R=800Ω in the circuit of input conversion circuit 3, C 1 =0.6F,C 2 =0.5F. MCU 4 adopts AT89C51, the formula R=K r Temperature Sensitivity Coefficient K in Q r Determined by experiments in advance, input into the single chip microcomputer 4. Display 5 adopts LCD liquid crystal seven-segment display tube. The stabilized power supply 6 adopts a lithium battery w...

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Abstract

A heat counting meter of conversion temperature sensing type used on radiator is prepared as fixing conversion temperature transducer on heat conduction plate, connecting UDD of said transducer to C1 and C2 connector of conversion circuit and transmitting its output signal to the terminal To of monolithic computer for processing, transmitting processed data to STO and CLK port as well as serial port of integrated circuit chip CD 4094*4 then transmitting it to display for displaying heat value out.

Description

technical field [0001] The invention belongs to a heat meter in a heating system, and in particular relates to a distribution meter for calculating heat consumption of a radiator in a central heating system of an urban residence. technical background [0002] There are currently two heat metering methods in urban heat supply: single household heat meter and total heat meter heating meter (also known as heat distribution meter). The single-household heat meter is mainly suitable for the single-household heating system, that is, one set of heat meter is installed for each house. This kind of heat metering system is expensive and difficult to promote on a large scale, especially it cannot be used in the existing system. . The total heat meter heating meter is to install a heat meter on each group of radiators, install a total heat meter in the heating system, and distribute according to the readings of the heat meter on each group of radiators an...

Claims

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Application Information

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IPC IPC(8): G01K17/02G01K17/00
Inventor 刘耀浩
Owner TIANJIN UNIV
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