CN2055594U

CN2055594U - Calorimeter for heating

Info

Publication number: CN2055594U
Application number: CN 89207746
Authority: CN
Inventors: 贾宝丁
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-05-27
Filing date: 1989-05-27
Publication date: 1990-04-04

Abstract

The utility model discloses a calorimeter for heating belonging to a metering device used in heating. The utility model comprises an electrical source, circuits 5, 6, 9 which uses switching elements with relevant parameter which determines the calorie and electric parameter, an electricity meter apparatus and a fixed part. The utility model can accomplish measuring each output point of heating, providing a measuring approach to the heating management of central heating area with the advantages of simple structure, practical use and convenience.

Description

Calorimeter for heating

The utility model belongs to the heat metering technology, is used for the metering of heating heat.

Have not yet to see about successfully measuring the report of heating caloric among the people, the CN85200021 instructions has proposed a kind of scheme of microcomputer interchangeable heat metering, means advanced person, but be difficult to the heat consumption of metering heating unit in family room.

The purpose of this utility model provides a kind of simple structure scheme that can measure heating for residential area with the heat instrument.

The purpose of this utility model is to realize like this, adopt general electric quantity metering circuit, the known electrical structure that promptly comprises power supply, load circuit, electric quantity metering instrument and the parts that are connected and fixed, do the load of circuit with the conversion element of the decision relevant factor of heat consumption and electric parameter, infer consumption of heat energy by electric quantity metering parts displayed value in the circuit then.Like this, though do not count whole parameters of decision heat consumption, but the power consumption of the utility model circuit exists corresponding relation really and between the heat consumption of measured point, can in specific usable range, set up between different heat exhaustion points relatively, thereby reach the effect of relative metering, become the easy scheme that realizes the object of the invention.

The conversion element of the utility model decision relevant factor of heat consumption and electric parameter is thermoelectric sensitive element, its temperature coefficient direction is opposite, series connection inserts load circuit, and thermoelectric sensitive element is arranged on the privileged site of heating zone heat supply parts near region and heating zone, is consistent between tested heating unit.In institute's limited range the main difference of heating caloric can by two thermoelectric sensitive elements lay a little the temperature difference and the common difference decision of heating accumulated time, and the electric parameter and the accumulated time thereof of the displayed value of electric quantity metering parts and thermoelectric sensitive element has definite corresponding relation in the utility model circuit, thereby can infer different differences of using some heating heat consumptions by the difference of the displayed value of electric quantity metering parts.

The utility model can also be only with a thermal sensing element, like this, can also be roughly according to the temperature estimation heat consumption of radiating subassembly, because of in the identical scope of external condition, it is identical or approaching concentrating for other parameter index between heating zone, the heat dissipation consumption only depends on or depends primarily on the temperature and the area of dissipation of heat supply parts, and the area of dissipation of heating generally is that the unified back of installing is fixing, the just flow or the break-make of thermal component heat exchange medium that the user can regulate, the variation of flow has determined the temperature of thermal component also to change thereupon, can be by near hard-wired thermal sensing element perception heating radiator, and on this measuring instrument, reflect.

The conversion element of the utility model decision relevant factor of heat consumption and electric parameter is differential pressure conversion element and thermoelectric sensitive element.The differential pressure conversion element places among the heating system pipeline, be used for measuring the flow velocity of heating medium in pipeline, i.e. impression causes the pressure reduction of media flow, and convert this impression to definite electric parameter, link with the potential winding in the electric quantity metering circuit, thereby will determine the flow factor of heat dissipation capacity to introduce among the circuit, set up corresponding relation.Thermoelectric sensitive element can be experienced the temperature difference that influences specific heat load.In circuit, just set up the corresponding relation between electric parameter and heat eliminating medium specific heat load and rate-of flow like this, measured the accumulation electric weight of sort circuit, can reflect the heat dissipation capacity of heating radiator more exactly.

The utility model utilizes prior art to set up the practical plan of metering heating heat exhaustion, and this heat is simple with scale construction, and manufacturing and use are all very convenient, is easy to popularize, for the heating management that improves the central heating district provides measurement means.

Accompanying drawing has provided the embodiment of this programme.

The heat structured flowchart of scale when Fig. 1 does circuit load for temperature sensor;

Fig. 2 is the circuit diagram of Fig. 1;

Fig. 3 is a kind of installation site signal of Fig. 1 sensor;

Fig. 4 has the structured flowchart of the heat of differential pressure transmitter with scale;

Fig. 5 is the circuit diagram of Fig. 4;

Fig. 6 is the installation site signal of Fig. 4;

Fig. 7 is the differential pressure transmitter structural representation.

This example is for being used for the heating heat scale of room heating installation; its temperature gauge unit is a thermistor, and what be used in the heating installation near region is the thermistor 5 of negative temperature coefficient, is used in to be subjected to be the thermistor 6 of positive temperature coefficient (PTC) for the district; the thermistor periphery is provided with mat 8, and additional lead sealing.Two series connection place among the circuit, and the power supply of circuit is exported after resistance 2 and two silicon diode 3 voltage stabilizings for measuring the electrisity consumption of two thermistor elements, also insert direct current energy meter 4 with 4 joint 1.5V dry cells 1.

Power connection, this table is started working, and when the temperature difference at two thermistor places was big, heating installation radiating subassembly 7 heat dissipations were more, and two resistance values are less; Otherwise two resistances increase, and this moment, heat dissipation was less relatively.Two temperatures felt

piece

5,6 strengthens the variation that resistance reduces with the temperature difference, shows as consumption of electric energy and strengthen in circuit.No doubt concrete resistance, power consumption also can be different because of the difference of actual temp value, but because of in the central heating district, this value is unified, or it is approximate consistent, two temperature-sensing elements that the difference of heat exhaustion depends primarily in the room, every radiating subassembly place are laid a temperature difference and duration, so the difference of consumption of electric energy can reflect in this central heating district that each room consumes the relative difference of heat energy, also can reach the purpose of metering.

The another embodiment of this case can at the accumulated value that electric energy meter shows, also can infer consumption of heat energy roughly according to this place's temperature variation only with a thermistor 5 that places negative temperature coefficient on the heating radiator.Ignore the difference of indoor environment temperature in the local area this moment, and heat consumption only is decided by radiator temperature and service time.

The 3rd the embodiment circuit structure of this case is identical with first example, negative tempperature coefficient thermistor 5 is loaded on the heating radiator, the thermistor 6 of positive temperature coefficient (PTC) and electric energy meter centralised arrangement are loaded on the unified local of room within an assembly, can infer consumption of heat energy equally.

This case the 4th embodiment is another kind of pattern, and heat is made up of two

temperatures sensor

5,6 and differential pressure transmitter 9 with the load circuit in the scale.The impression end 14,15 of differential pressure transmitter is located at desire and surveys within the pipeline of heating radiator, by velocity of medium in the indirect display tube of orifice plate 10 front and back pressure differentials, and borrow diaphragm 11 distortion to drive slide rheostats 13 pressure difference value by transmission levers 12, the potential winding of rheostat and DC meter links; Temperature sensor still is the opposite sensors of two coefficient directions, links circuit as example 1, links with the current coil of ammeter.But its positive temperature coefficient (PTC) sensor 6 is positioned on the water return pipeline of heating radiator, and the sensor 5 of negative temperature coefficient is installed on the feedwater piping of heating radiator.The heat that this example can measure heating medium more exactly and be given out comes.

Claims

1, heating heat comprises power supply 1, load circuit, electric quantity metering instrument 4 and the parts that are connected and fixed with scale, it is characterized in that load circuit comprises two thermoelectric sensitive elements 5,6 that the temperature coefficient direction is different, and the two elements series connection inserts load circuit.

2, heat is used scale according to claim 1, it is characterized in that load circuit only comprises 1 thermoelectric sensitive element 5.

3, the hot according to claim 1 scale of using, it is characterized in that also comprising in the load circuit differential pressure conversion element 9, its impression end 14,15 places among the heating medium pipeline, the potential winding of its output terminal and electric quantity metering instrument links, and the thermoelectric sensitive element of two series connection and the current coil of electric quantity metering instrument link.