CN204855044U - Measuring device is decreased to heat energy gauge pressure - Google Patents

Measuring device is decreased to heat energy gauge pressure Download PDF

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Publication number
CN204855044U
CN204855044U CN201520494822.XU CN201520494822U CN204855044U CN 204855044 U CN204855044 U CN 204855044U CN 201520494822 U CN201520494822 U CN 201520494822U CN 204855044 U CN204855044 U CN 204855044U
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China
Prior art keywords
heat energy
differential pressure
energy meter
water
pressure
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CN201520494822.XU
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Chinese (zh)
Inventor
韩国霞
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Hefei Thermoelectric Group Co Ltd
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Hefei Thermoelectric Group Co Ltd
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Abstract

The utility model discloses a measuring device is decreased to heat energy gauge pressure, including installing the heat energy table at flow examination bench, between the inlet outlet that the connecting pipe and the heat energy of flow examination platform were shown respectively the UNICOM have differential pressure sampling tube, its characterized in that: being equipped with into water on the differential pressure sampling tube respectively and getting and press mouthful and go out water and get and press mouthful, intake to get and press mouthful and go out water and get to press mouthful and install the control valve respectively, voltage regulator device is installed respectively at the delivery port position of control valve, including differential pressure transmitter, UNICOM between differential pressure transmitter's measuring junction and two voltage regulator device's the play water end (W. E. ), including digital display, differential pressure transmitter's signal output part is connected with digital display's signal input part electricity. The utility model has the advantages of reasonable design, carry out the quantitative measurement of pressure loss before can installing and use the heat energy table, methods of measurement is simple, and measuring result is accurate.

Description

A kind of heat energy meter crushing measurement mechanism
technical field:
The utility model relates generally to a kind of heat energy meter crushing measurement mechanism.
background technology:
Heat energy meter, as one of civilian four tables, plays an important role as trade settlement instrument in heat metering, therefore particularly important to the quantitative measurment of its property indices (error of indication, sealing, crushing etc.).
Current domestic calorimeter is formed primarily of flow sensor, temperature sensor, integrating instrument (counter) three parts.Its principle of work is on the pipeline of entrance and exit pairing temperature sensor being arranged on respectively heat exchange loop, is arranged on by flow sensor on entrance or outlet.Flow sensor sends flow signal, and pairing temperature sensor provides the temperature signal of entrance and exit, and counter gathers flow signal and temperature signal, through calculating, demonstrates thermal liquid from entrance to exporting the calorie value discharged.
When heat energy meter is in running order, when thermal liquid flows through heat-meter flow-meter body, certain pressure loss can be produced in flowmeter cavity, the existence of this crushing (i.e. pressure reduction values) will directly have influence on the heat hydraulic pressure of heating resident caliduct house lead in end, if the crushing of heat energy meter is excessive, the hot water that there will be circulation in radiator in heating user family causes underfed because pressure is low and affects heating effect.Current domestic heat energy meter brand is more, and the heat energy meter structure that Ge Jia manufacturer produces, principle are different, and the crushing of each brand heat energy meter is to the greatest extent not identical yet.Being defined as heat energy meter crushing in China's " JJG225-2001 heat energy meter vertification regulation ": the maximum crushing △ P of heat meter flow sensor under rated flow should more than 25Kpa.Therefore to particularly important to the quantitative measurment of its crushing before heat energy meter is installed and used.
utility model content:
The utility model object is exactly the defect in order to make up prior art, provides a kind of heat energy meter crushing measurement mechanism of reasonable in design.
The utility model is achieved through the following technical solutions:
A kind of heat energy meter crushing measurement mechanism, include the heat energy meter be arranged on flow verification platform, differential pressure stopple coupon is linked with respectively between the connecting pipe of flow verification platform and the intake-outlet of heat energy meter, it is characterized in that: differential pressure stopple coupon is respectively equipped with into water pressure tappings and water outlet pressure tappings, water inlet pressure tappings and water outlet pressure tappings are separately installed with operation valve, and the water delivering orifice position of operation valve is separately installed with stable-pressure device; Include differential pressure transmitter, UNICOM between the water side of the measuring junction of differential pressure transmitter and two stable-pressure devices; Include digital indicator, the signal output part of differential pressure transmitter is electrically connected with the signal input part of digital indicator.
A kind of heat energy meter crushing measurement mechanism, is characterized in that: respectively by being threaded between described differential pressure stopple coupon and the intake-outlet of heat energy meter; O RunddichtringO is adopted to connect by starting meter-clamping apparatus axially-movable pneumatic clamping between the connecting pipe of differential pressure stopple coupon and flow verification platform.
The position that described differential pressure stopple coupon is connected with operation valve is three-port structure, and described two differential pressure stopple coupons form differential pressure sampler.The tested heat energy meter preparing to carry out crushing measurement is contained on the utility model, start flow verification platform, due to the design of differential pressure sampler system three-port structure, thermal liquid is flowing through while tested heat energy meter examines and determine its error of indication, water inlet end pressure (high pressure) and the water side pressure (low pressure) of tested heat energy meter are obtained by the upper port of differential pressure sampler (three-way device), sample laggard, discharge pressure delivers to stable-pressure device, differential pressure measuring installation is delivered to again after voltage stabilizing, differential pressure signal is converted into 4 ~ 20mA current signal and exports digital indicator to by differential pressure measuring installation, digital indicator carries out signal transacting to 4 ~ 20mA current signal that differential pressure measuring installation inputs, analog-to-digital conversion etc., the crushing actual measured value of tested heat energy meter is presented on digital display screen in the mode of digital quantity.
Be connected by pneumatic clamps meter apparatus.This device mainly plays a role as follows: the heat energy meter of flow verification platform and crushing to be measured is linked to be an entirety (i.e. a system) by (1); (2) the water-in and water-out pressure flowing through crushing heat energy meter to be measured is sampled.
Stable-pressure device: carry out voltage stabilizing to the force samples value of heat energy meter water inlet end, water side, prevents the heat energy meter water inlet end because the system disturbance of flow verification platform causes, water side pressure surge, causes crushing measuring error larger.
Differential pressure transmitter is differential pressure measuring installation: to after heat energy meter water inlet end, water side voltage stabilizing force samples value carry out quantitative measurment, pressure signal is converted into 4 ~ 20mA current signal export.
Digital indicator: signal transacting, analog-to-digital conversion etc. are carried out to 4 ~ 20mA current signal of differential pressure measuring installation input, the crushing △ P actual measured value of tested heat energy meter is presented on digital display screen in the mode of digital quantity.
The utility model has the advantages that:
The utility model reasonable in design, carries out the quantitative measurment of crushing to heat energy meter before can installing and using, measuring method is simple, and measurement result is accurate.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enforcement figure that the utility model is applied on flow verification platform.
embodiment:
See accompanying drawing.
A kind of heat energy meter crushing measurement mechanism, include the heat energy meter 1 be arranged on flow verification platform, differential pressure stopple coupon is linked with respectively between the connecting pipe of flow verification platform and the intake-outlet of heat energy meter, differential pressure stopple coupon is respectively equipped with into water pressure tappings 2 and water outlet pressure tappings 3, water inlet pressure tappings 2 and water outlet pressure tappings 3 are separately installed with operation valve 4, and the water delivering orifice position of operation valve 4 is separately installed with stable-pressure device 5; Include differential pressure transmitter 6, UNICOM between the water side of the measuring junction of differential pressure transmitter 6 and two stable-pressure devices 5; Include digital indicator 7, the signal output part of differential pressure transmitter 6 is electrically connected with the signal input part of digital indicator 7.
Respectively by being threaded between the intake-outlet of differential pressure stopple coupon and heat energy meter 1; O RunddichtringO is adopted to connect by starting meter-clamping apparatus axially-movable pneumatic clamping between the connecting pipe of differential pressure stopple coupon and flow verification platform.

Claims (2)

1. a heat energy meter crushing measurement mechanism, include the heat energy meter be arranged on flow verification platform, differential pressure stopple coupon is linked with respectively between the connecting pipe of flow verification platform and the intake-outlet of heat energy meter, it is characterized in that: differential pressure stopple coupon is respectively equipped with into water pressure tappings and water outlet pressure tappings, water inlet pressure tappings and water outlet pressure tappings are separately installed with operation valve, and the water delivering orifice position of operation valve is separately installed with stable-pressure device; Include differential pressure transmitter, UNICOM between the water side of the measuring junction of differential pressure transmitter and two stable-pressure devices; Include digital indicator, the signal output part of differential pressure transmitter is electrically connected with the signal input part of digital indicator.
2. a kind of heat energy meter crushing measurement mechanism according to claim 1, is characterized in that: respectively by being threaded between described differential pressure stopple coupon and the intake-outlet of heat energy meter; O RunddichtringO is adopted to connect by starting meter-clamping apparatus axially-movable pneumatic clamping between the connecting pipe of differential pressure stopple coupon and flow verification platform.
CN201520494822.XU 2015-07-08 2015-07-08 Measuring device is decreased to heat energy gauge pressure Active CN204855044U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520494822.XU CN204855044U (en) 2015-07-08 2015-07-08 Measuring device is decreased to heat energy gauge pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520494822.XU CN204855044U (en) 2015-07-08 2015-07-08 Measuring device is decreased to heat energy gauge pressure

Publications (1)

Publication Number Publication Date
CN204855044U true CN204855044U (en) 2015-12-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104990646A (en) * 2015-07-08 2015-10-21 合肥热电集团有限公司 Heat energy meter pressure loss measurement device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104990646A (en) * 2015-07-08 2015-10-21 合肥热电集团有限公司 Heat energy meter pressure loss measurement device

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