CN105466605A - Heat meter with working state monitoring function and monitoring method thereof - Google Patents
Heat meter with working state monitoring function and monitoring method thereof Download PDFInfo
- Publication number
- CN105466605A CN105466605A CN201510781762.4A CN201510781762A CN105466605A CN 105466605 A CN105466605 A CN 105466605A CN 201510781762 A CN201510781762 A CN 201510781762A CN 105466605 A CN105466605 A CN 105466605A
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- Prior art keywords
- calorimeter
- pressure
- duty
- heat meter
- data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
- G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K19/00—Testing or calibrating calorimeters
Abstract
The invention discloses a heat meter with a working state monitoring function. The heat meter comprises a base heat meter, and a pressure transmitter is mounted at the water inlet of the base heat meter. On the basis, the invention further discloses a method for monitoring whether the working state of a heat meter is normal. According to the technical scheme of the invention, whether a heat meter is in a normal operation state is judged indirectly by monitoring the pressure of the heat meter, and the maintenance workload of the heat meter is reduced significantly.
Description
Technical field
The present invention relates to a kind of calorimeter, belong to measurer field.
Background technology
In the northern area of China, in order to tackle cold climate in winter, usually adopt the mode of municipal central heating for resident's heating.The heating charge mode adopted for many years is by heating area charge, and this kind of charging way also cannot accurate-metering heating amount, easily occurs heat waste.Along with the development of technology, after China some areas have started progressively to promote within the heat supply phase or heating period terminates, a building calorimeter is as the trade settlement point for hot both sides.The heating and refrigerating of public building also carries out meterage gradually.
Adopting according to a key foundation of charging per heat is that heat meter should ensure that measuring accuracy meets request for utilization again.Because its environment for use is severe, calorimeter quality is in the market uneven again, and for ensureing its measuring accuracy, national correlation department regulation calorimeter must carry out installing first inspection.In order to ensure the accuracy of measuring in use procedure, define again after calorimeter runs 3 years in conjunction with empirical data for a long time and recheck, use just recheck qualified can continuation.
But, for when needing the correct time this area of carrying out rechecking to there is no unified cognition at present, rechecking for 3 years also just based on the approximate time time limit of historical empirical data gained of national regulation.Because the calorimeter quality on market is uneven, environment for use is each variant, and calorimeter consumption is very big, unified according within 3 years, carrying out rechecking not only dismounting, transport, the workload of detection and enormous costs, and there is part high-quality table tool and use 3 years without any problem, and namely the situation of measuring error appearred in the table tool of part environment for use difference less than 3 years, the appearance of this situation result in a large amount of meaningless workloads and gauging loss.
Therefore, there is a kind of exigence and can realize comparatively accurately whether knowing in time, accurately the duty of calorimeter in this area, to reduce the workload and cost that detect and safeguard.
Summary of the invention
For the deficiencies in the prior art, the invention discloses the calorimeter that a kind of duty can be monitored, pressure monitoring point position is increased for monitoring pressure change when calorimeter runs by position suitable on calorimeter, judge hotlist whether normal operation according to the parameter value under pressure, thus save a large amount of dismounting, install, transport and testing cost.
Specifically, the present invention is achieved through the following technical solutions:
The calorimeter that duty can be monitored, comprises calorimeter basal meter, calorimeter basal meter is provided with pressure unit, and this pressure unit is at least used for detecting the water inlet pressure of calorimeter basal meter.
Utilize said structure, the fundamental characteristics in conjunction with calorimeter judges the running status of calorimeter.Its principle of work and power contrasts for utilizing the data obtained and measured data under normal operating conditions, judges that its calorimeter is the need of reinspection.
One as technique scheme is improved, and in order to improve detection speed, and is convenient to the later stage and expands the application of other functions, can be used for detecting by pressure unit the pressure (namely using differential pressure transmitter) of water inlet of calorimeter basal meter.
Further, above-mentioned pressure unit and calorimeter parameter are connected to remote server by data acquisition unit.
By disposing calculation resources at remote server, can according to the data such as pressure, flow, flow velocity on the table tool obtained in real time, long-rangely judge whether calorimeter is in normal operating condition.
In order to prevent the accuracy occurring the above-mentioned detection of abnormal water temperature variable effect in pipeline, the water inlet pipeline and water return outlet pipeline of calorimeter basal meter are separately installed with inflow temperature sensor, return water temperature sensor.
Further, above-mentioned inflow temperature sensor, return water temperature sensor all can be connected to remote server by data acquisition unit.
Utilize said temperature sensor, contrast with the measured value in station, judge whether occur temperature anomaly in the running status of temperature detecting point and pipeline.
On the basis of the above, the invention discloses the monitoring method for calorimeter duty, comprise the steps:
1) according to the intrinsic physical parameter under calorimeter normal operating conditions, the service data of calorimeter is obtained;
2) calorimeter is used to obtain the running parameters such as instantaneous delivery, thermal power, inflow temperature, return water temperature;
3) pressure parameter, running parameter and historical record are compared, judge calorimeter duty.
Above-mentioned monitoring method is based on following principle: according to the work characteristics of heat death theory, after hydraulic equilibrium debug system is normally run, the negotiability of pipeline is constant, uniform pressure down-off is identical, and the flow velocity reading therefore under the pressure parameter of any time and running parameter and this some historical data in the same condition can compare.Above-mentioned alleged correlation data contrasts according to the data under the pressure under measured data, temperature lookup history the same terms.
Preferably, in step 3) in Usage data collection device the data upload collected to remote server, utilize remote server uploading data and data historian record automatically to be compared, judge calorimeter duty.
Because remote server can adopt concurrent operation, have powerful data processing and arithmetic capability, the historical record automatically can searching this spot pressure is compared, and judges calorimeter duty.
Above-mentioned alleged historical data, the principle based on said method it will be appreciated by those skilled in the art that and refers to when heat meter calibration is normal, the pressure parameter that server stores, corresponding relation between running parameter and heat quantity flow flow velocity.
As above provided method, the one being only calorimeter working method of the present invention realizes fast.When the degree needing precise evaluation and calculating calorimeter to break down, more specifically method can be adopted to process.Such as, adopt differential pressure transmitter, the import obtained based on differential pressure transmitter and the pressure differential of outlet are assessed more accurately to ducted instantaneous delivery flow velocity, in this case, method used is: according in same pipeline, and the relation between flow, coefficient of flow, sectional area, pressure reduction obtains instantaneous delivery flow velocity.
Although it should be noted that applicant employs the concept of calorimeter in the foregoing description, this is only a kind of description to its principle of work, and any table tool for detecting temperature difference flow velocity is all covered by above-mentioned concept.Such as cold meter (the meter tool that the central water cycle refrigeration system namely in public building is used) is that the functional title of the another kind of calorimeter alleged by the present invention under refrigerating environment describes.
Accompanying drawing explanation
Fig. 1 shows the structural representation of calorimeter of the present invention.
Embodiment
In following enforcement, applicant is described principle of work of the present invention by reference to the accompanying drawings.It will be understood by those skilled in the art that the present invention is the improvement to traditional calorimeter, do not change the working method of traditional calorimeter self, therefore do not draw and describe the structure member of calorimeter basal meter (i.e. traditional calorimeter) in the accompanying drawings in detail.Meanwhile, the present invention does not limit the model of each parts, and this area arbitrarily existing calorimeter is all applicable to adopt technical scheme of the present invention to improve.
With reference to figure 1, the calorimeter that duty of the present invention can be monitored, comprise calorimeter basal meter, the core component of calorimeter basal meter is the measurement using the transducer 2 on pipeline and connected integrator 5 to realize instantaneous delivery flow velocity, at the inlet pipeline port of calorimeter basal meter, pressure unit 1 is installed, the water inlet pipeline and water return outlet pipeline of calorimeter basal meter have been separately installed with inflow temperature sensor 4, return water temperature sensor 3.
As the specific implementation of apparatus of the present invention method of work, work can be carried out based on such as under type:
In order to realize quick detection, dispose computational resource on the remote server.After hydraulic equilibrium debug system is normally run, remote server utilizes the running parameter of memory storage storing heat table when examining and determine normal and pressure parameter, and the pressure parameter of persistent collection and acquisition calorimeter and running parameter.When whether needs detection calorimeter goes wrong, obtain the correlation parameter and calorimeter reading that detect the moment, compare with the flow velocity data under uniform pressure in historical storage data and running parameter.
In order to realize assessment calorimeter being departed to normal operating conditions, can adopt with the following method: use differential pressure transmitter obtains the pressure differential in pipeline, calculates instantaneous delivery flow velocity based on following method,
Wherein, Q is instantaneous delivery, m/s; μ is coefficient of flow, is the coefficient relevant to valve pipe self geometric configuration, is generally 0.6 ~ 0.65; A is the area of section of pipeline, m
2; P is pressure differential, Pa; ρ is the density of fluid, kg/m
3.
Calculate instantaneous delivery based on above-mentioned instantaneous differential pressure, the instantaneous delivery shown with calorimeter contrasts, and error can be judged as that within ± 2% this table is qualified.
Claims (6)
1. the calorimeter that can monitor of duty, is characterized in that comprising calorimeter basal meter, calorimeter basal meter is provided with pressure unit, and this pressure unit is at least used for detecting the water inlet pressure of calorimeter basal meter.
2. calorimeter according to claim 1, is characterized in that being separately installed with inflow temperature sensor, return water temperature sensor on the water inlet pipeline and water return outlet pipeline of calorimeter basal meter.
3. calorimeter according to claim 1, is characterized in that pressure unit and calorimeter are connected to remote server by data acquisition unit.
4. calorimeter according to claim 3, is characterized in that inflow temperature sensor, return water temperature sensor is all connected to remote server.
5. a monitoring method for calorimeter duty, is characterized in that comprising the steps: 1) according to the intrinsic physical parameter under calorimeter normal operating conditions, obtain the pressure parameter of pipeline; 2) calorimeter is used to obtain the running parameters such as instantaneous delivery, thermal power, inflow temperature, return water temperature; 3) pressure parameter, running parameter and historical record are compared, judge calorimeter duty.
6. monitoring method according to claim 5, it is characterized in that in step 3) in Usage data collection device the data upload collected to remote server, utilize remote server uploading data and data historian record automatically to be compared, judge calorimeter duty.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781762.4A CN105466605A (en) | 2015-11-13 | 2015-11-13 | Heat meter with working state monitoring function and monitoring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781762.4A CN105466605A (en) | 2015-11-13 | 2015-11-13 | Heat meter with working state monitoring function and monitoring method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105466605A true CN105466605A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510781762.4A Pending CN105466605A (en) | 2015-11-13 | 2015-11-13 | Heat meter with working state monitoring function and monitoring method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05142066A (en) * | 1991-11-25 | 1993-06-08 | Tokyo Gas Co Ltd | Calorimeter |
| CN101832827A (en) * | 2010-06-03 | 2010-09-15 | 湖南威铭能源科技有限公司 | Heat meter with pressure measuring function |
| CN202166490U (en) * | 2011-05-25 | 2012-03-14 | 张海俏 | Intelligent heat meter with RS485 communication |
| CN102662387A (en) * | 2012-06-01 | 2012-09-12 | 张克 | Heat supply monitoring system and method |
| CN104075828A (en) * | 2013-03-26 | 2014-10-01 | 纪周 | Large-diameter standard throttle device-type heat meter and calibration method thereof |
| CN104729637A (en) * | 2015-02-03 | 2015-06-24 | 浙江工业大学 | Turbine flowmeter online calibration system and method |
-
2015
- 2015-11-13 CN CN201510781762.4A patent/CN105466605A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05142066A (en) * | 1991-11-25 | 1993-06-08 | Tokyo Gas Co Ltd | Calorimeter |
| CN101832827A (en) * | 2010-06-03 | 2010-09-15 | 湖南威铭能源科技有限公司 | Heat meter with pressure measuring function |
| CN202166490U (en) * | 2011-05-25 | 2012-03-14 | 张海俏 | Intelligent heat meter with RS485 communication |
| CN102662387A (en) * | 2012-06-01 | 2012-09-12 | 张克 | Heat supply monitoring system and method |
| CN104075828A (en) * | 2013-03-26 | 2014-10-01 | 纪周 | Large-diameter standard throttle device-type heat meter and calibration method thereof |
| CN104729637A (en) * | 2015-02-03 | 2015-06-24 | 浙江工业大学 | Turbine flowmeter online calibration system and method |
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| C06 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 102400 Fangshan District Baiyang Lu 2, 1 buildings -1 to 3 tier 101, Beijing Applicant after: Beijing Polytron Technologies Inc Address before: 102400 Fangshan District Baiyang Lu 2, 1 buildings -1 to 3 tier 101, Beijing Applicant before: Beijing Jingyuan Smart Water Meter Co., Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160406 |
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| RJ01 | Rejection of invention patent application after publication |