CN111637989A - Large-caliber heat meter replacing method and device - Google Patents
Large-caliber heat meter replacing method and device Download PDFInfo
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- CN111637989A CN111637989A CN202010445872.4A CN202010445872A CN111637989A CN 111637989 A CN111637989 A CN 111637989A CN 202010445872 A CN202010445872 A CN 202010445872A CN 111637989 A CN111637989 A CN 111637989A
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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
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- 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
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Abstract
The invention relates to the technical field of metering, and discloses a large-caliber heat meter replacing device which comprises a large-caliber pipeline, a parallel pipeline and a small-caliber heat meter, wherein the two ends of the large-caliber pipeline are respectively communicated with a water inlet pipeline and a water outlet pipeline, the parallel pipeline is positioned beside the large-caliber pipeline and is connected with the large-caliber pipeline in parallel, and the small-caliber heat meter is fixedly arranged on the parallel pipeline. The invention also discloses a large-caliber heat meter replacing method, which comprises the following steps: s1, initializing a small-caliber heat meter; s2, measuring the flow ratio H of the large-caliber pipeline and the parallel pipeline; s3, sequentially opening a main water outlet valve, a water outlet stop valve, a flow regulating valve, a water inlet stop valve and a main water inlet valve; and S4, enabling the flow value in the small-caliber heat meter to reach the preset value of the small-caliber heat meter. The parallel pipeline of the small-caliber heat meter is arranged beside the large-caliber pipeline in parallel, so that the expensive large-caliber heat meter can be replaced with the parallel pipeline with the same effect, the investment and the manufacturing cost are saved, the enterprise needs are met, and the parallel pipeline is suitable for popularization and application.
Description
Technical Field
The invention belongs to the technical field of metering, and particularly relates to a method and a device for replacing a large-caliber heat meter.
Background
At present, heat companies purchase heat from thermal power plants and use heat meters for metering and settling, unit users and residential users sell heat and also use heat meters for metering and settling, and heat meter products need to strictly meet the national metering law. Meanwhile, heat metering devices are also needed for internal management of a heating power company, such as a heat exchange station and a building heating power inlet, and the metering devices are needed to be monitored in real time, so that fine management is promoted, and reasonable heat utilization, energy conservation and consumption reduction are realized.
In foreign countries, the primary purpose of the heat meter for production and application popularization is fine management, however, the price of the heat meter increases in stages along with the increase of the caliber, so that the large-caliber heat meter is high in manufacturing cost and hinders popularization and application.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the device adopts the matching of the small-caliber heat meter and the pipe group in the application based on the prior heat meter technology and products, can completely realize the occasion of monitoring and management, saves the investment cost, meets the enterprise requirement, and solves the problem that the large-caliber heat meter is high in price and is not beneficial to popularization and application.
(II) technical scheme
In order to solve the problems, the invention provides a method and a device for replacing a large-caliber heat meter, which specifically adopt the technical scheme that:
on one hand, the application provides a large-caliber heat meter replacing device, which comprises a large-caliber pipeline, a parallel pipeline and a small-caliber heat meter, wherein two ends of the large-caliber pipeline are respectively communicated with a water inlet pipeline and a water outlet pipeline; the flow control valve is arranged on the large-caliber pipeline and used for controlling the flow of the large-caliber pipeline, the pipe diameter of the parallel pipeline is smaller than that of the large-caliber pipeline, a water inlet stop valve used for controlling the water inlet flow of the small-caliber heat meter and a water outlet stop valve used for controlling the water outlet flow of the small-caliber heat meter are arranged on the parallel pipeline.
Optionally, one end of the large-diameter pipeline is fixedly connected with a water inlet pipeline through a first flange, a main water inlet valve is arranged on the water inlet pipeline, the other end of the large-diameter pipeline is fixedly connected with a water outlet pipeline through a second flange, and a main water outlet valve is arranged on the water outlet pipeline.
Optionally, a first pressure gauge is arranged at one end, away from the main water inlet valve, of the first flange, and a second pressure gauge is arranged at one end, away from the main water outlet valve, of the second flange.
Optionally, two third pressure gauges are fixedly arranged on the parallel pipeline, and the two third pressure gauges are respectively located on two sides of the small-caliber heat meter.
On the other hand, the application also provides a large-caliber heat meter replacing method, which comprises the following steps:
s1, initializing the small-caliber heat meter, and obtaining an initial reading of the small-caliber heat meter;
s2, measuring the flow ratio H of water flowing through the large-caliber pipeline and the parallel pipeline under different opening degrees by the flow regulating valve;
s3, sequentially opening a main water outlet valve, a water outlet stop valve, a flow regulating valve, a water inlet stop valve and a main water inlet valve;
and S4, adjusting the opening degrees of the water inlet stop valve and the water outlet stop valve to enable the flow value in the small-caliber heat meter to reach the preset value of the small-caliber heat meter.
Optionally, the metering data of the small-caliber heat meter includes an instantaneous flow Q and a supply water temperature difference T flowing through the small-caliber heat meter within time T, and an instantaneous thermal power P flowing through the parallel pipeline is expressed by a formula:
the cumulative heat W1 flowing through the parallel pipes is formulated as:
the accumulated heat W2 flowing through the large diameter pipe and the parallel pipe is expressed by the formula:
optionally, when the flow flowing through the small-caliber heat meter is insufficient, the water inlet stop valve and the main water outlet valve are adjusted to be closed, and the small-caliber heat meter is guaranteed to work normally.
(III) advantageous effects
The invention provides a method and a device for replacing a large-caliber heat meter. Compared with the prior art, the method has the following beneficial effects:
1. the parallel pipeline of the small-caliber heat meter is arranged beside the large-caliber pipeline in parallel, so that the expensive large-caliber heat meter can be replaced with the parallel pipeline with the same effect, the investment and cost are saved, the enterprise needs are met, and the parallel pipeline is suitable for popularization and application;
2. according to the invention, the third pressure gauges are arranged on the two sides of the small-caliber heat meter, so that the operation condition of the small-caliber heat meter can be directly judged by observing the pressure indicated by the two third pressure gauges, and the abnormal condition that the front pressure and the rear pressure of the small-caliber heat meter are inconsistent is timely processed, so that the small-caliber heat meter is safe and reliable.
Drawings
Fig. 1 is a schematic structural diagram of a large-caliber heat meter replacing device.
In the figure: 1. a large-caliber pipeline; 2. a flow regulating valve; 3. a small-caliber heat meter; 4. parallel pipelines; 5. a water inlet stop valve; 6. a water outlet stop valve; 7. a first flange; 8. a water inlet pipe; 9. a second flange; 10. a water outlet pipeline; 11. a first pressure gauge; 12. a second pressure gauge; 13. a third pressure gauge; 14. a main water inlet valve; 15. a main water outlet valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1, the substitute device for a large-caliber heat meter of the present invention includes a large-caliber pipe 1 having two ends respectively communicated with a water inlet pipe 8 and a water outlet pipe 10, a parallel pipe 4 located beside the large-caliber pipe 1 and connected in parallel with the large-caliber pipe 1, and a small-caliber heat meter 3 fixed on the parallel pipe 4.
One end of the large-diameter pipeline 1 is fixedly connected with a water inlet pipeline 8 through a first flange 7, a main water inlet valve 14 is arranged on the water inlet pipeline 8, the other end of the large-diameter pipeline 1 is fixedly connected with a water outlet pipeline 10 through a second flange 9, and a main water outlet valve 15 is arranged on the water outlet pipeline 10. The large-caliber pipeline 1 is provided with a flow regulating valve 2 for controlling the flow of the large-caliber pipeline 1, the pipe diameter of the parallel pipeline 4 is smaller than that of the large-caliber pipeline 1, the parallel pipeline 4 is provided with a water inlet stop valve 5 for controlling the water inlet flow of the small-caliber heat meter 3 and a water outlet stop valve 6 for controlling the water outlet flow of the small-caliber heat meter 3.
A first pressure gauge 11 is arranged at one end, away from a main water inlet valve 14, of the first flange 7, and a second pressure gauge 12 is arranged at one end, away from a main water outlet valve 15, of the second flange 9. Two third pressure gauges 13 are fixedly arranged on the parallel pipeline 4, and the two third pressure gauges 13 are respectively positioned on two sides of the small-caliber heat meter 3.
A large-caliber heat meter replacing method comprises the following steps:
s1, initializing the small-caliber heat meter 3, and obtaining an initial reading of the small-caliber heat meter 3;
s2, measuring the flow ratio H of water flowing through the large-caliber pipeline 1 and the parallel pipeline 4 under different opening degrees by the flow regulating valve 2;
s4, manually and sequentially opening a main water outlet valve 15, a water outlet stop valve 6, a flow regulating valve 2, a water inlet stop valve 5 and a main water inlet valve 14;
and S5, adjusting the opening degrees of the water inlet stop valve 5 and the water outlet stop valve 15 to enable the flow value in the small-caliber heat meter 3 to reach the preset value of the small-caliber heat meter 3.
The metering data of the small-caliber heat meter 3 comprises an instantaneous flow Q1 and a supplied water temperature difference T1 flowing through the small-caliber heat meter 3 in time T, and the instantaneous heat power P1 flowing through the parallel pipeline 4 is expressed by the formula:
the cumulative heat W1 flowing through the parallel pipe 4 is formulated as:
since the time of flowing through the large-diameter pipeline 1 and the parallel pipeline 4 is the same, the instantaneous thermal power P2 flowing through the large-diameter pipeline 1 and the parallel pipeline 4 is expressed as:
therefore, the cumulative heat W2 flowing through the large diameter pipe 1 and the parallel pipe 4 is expressed by the formula:
therefore, the accumulated heat W2 flowing through the large-caliber pipeline 1 and the parallel pipeline 4 can be measured by using the small-caliber heat meter 3, so that the small-caliber heat meter 3 can be used for replacing the large-caliber heat meter.
When the flow passing through the small-caliber heat meter 3 is insufficient, the water inlet stop valve 5 and the main water outlet valve 15 are adjusted to be closed, and the small-caliber heat meter 3 is guaranteed to work normally.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A large-caliber heat meter replacing device is characterized in that: the system comprises a large-caliber pipeline (1) with two ends respectively communicated with a water inlet pipeline (8) and a water outlet pipeline (10), a parallel pipeline (4) which is positioned beside the large-caliber pipeline (1) and is connected with the large-caliber pipeline (1) in parallel, and a small-caliber heat meter (3) fixedly arranged on the parallel pipeline (4); the flow control valve (2) used for controlling the flow of the large-caliber pipeline (1) is arranged on the large-caliber pipeline (1), the pipe diameter of the parallel pipeline (4) is smaller than that of the large-caliber pipeline (1), a water inlet stop valve (5) used for controlling the water inlet flow of the small-caliber heat meter (3) and a water outlet stop valve (6) used for controlling the water outlet flow of the small-caliber heat meter (3) are arranged on the parallel pipeline (4).
2. The large-caliber heat meter replacing device according to claim 1, wherein: one end of the large-caliber pipeline (1) is fixedly connected with a water inlet pipeline (8) through a first flange (7), a main water inlet valve (14) is arranged on the water inlet pipeline (8), the other end of the large-caliber pipeline (1) is fixedly connected with a water outlet pipeline (10) through a second flange (9), and a main water outlet valve (15) is arranged on the water outlet pipeline (10).
3. A large-caliber heat meter replacing device according to claim 2, characterized in that: one end, far away from main water inlet valve (14), of first flange (7) is provided with a first pressure gauge (11), and one end, far away from main water outlet valve (15), of second flange (9) is provided with a second pressure gauge (12).
4. The large-caliber heat meter replacing device according to claim 1, wherein: two third pressure gauges (13) are fixedly arranged on the parallel pipeline (4), and the two third pressure gauges (13) are respectively positioned on two sides of the small-caliber heat meter (3).
5. A large-caliber heat meter replacing method adopting any one of claims 1 to 4 is characterized by comprising the following steps:
s1, initializing the small-caliber heat meter (3), and acquiring an initial reading of the small-caliber heat meter (3);
s2, measuring the flow ratio H of water flowing through the large-caliber pipeline (1) and the parallel pipeline (4) under different opening degrees by the flow regulating valve (2);
s4, sequentially opening a main water outlet valve (15), a water outlet stop valve (6), a flow regulating valve (2), a water inlet stop valve (5) and a main water inlet valve (14);
s5, adjusting the opening degrees of the water inlet stop valve (5) and the water outlet stop valve (15) to enable the flow value in the small-caliber heat meter (3) to reach the preset value of the small-caliber heat meter (3).
6. The large-caliber heat meter replacing method according to claim 5, characterized in that: the metering data of the small-caliber heat meter (3) comprises an instantaneous flow Q1 and a supply water temperature difference T1 flowing through the small-caliber heat meter (3) in time T, and the instantaneous heat power P1 flowing through the parallel pipeline (4) is expressed as the formula:
the cumulative heat W1 flowing through the parallel pipes (4) is expressed by the formula:
the accumulated heat W2 flowing through the large-caliber pipeline (1) and the parallel pipeline (4) is expressed by the formula:
7. the large-caliber heat meter replacing method according to claim 5, characterized in that: when the flow passing through the small-caliber heat meter (3) is insufficient, the water inlet stop valve (5) and the main water outlet valve (15) are adjusted to be closed, and the small-caliber heat meter (3) is guaranteed to work normally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010445872.4A CN111637989A (en) | 2020-05-25 | 2020-05-25 | Large-caliber heat meter replacing method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010445872.4A CN111637989A (en) | 2020-05-25 | 2020-05-25 | Large-caliber heat meter replacing method and device |
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| CN111637989A true CN111637989A (en) | 2020-09-08 |
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| CN202010445872.4A Pending CN111637989A (en) | 2020-05-25 | 2020-05-25 | Large-caliber heat meter replacing method and device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201264A (en) * | 2006-12-14 | 2008-06-18 | 西北工业大学 | Device for shunting and surveying current with broad measuring range |
| CN202002684U (en) * | 2011-01-25 | 2011-10-05 | 上海金将普实业有限公司 | Metering device with wide measuring range |
| CN104154960A (en) * | 2014-08-01 | 2014-11-19 | 衢州市鼎盛化工科技有限公司 | Hall-effect large-diameter pipeline flowmeter |
| CN104614025A (en) * | 2015-02-15 | 2015-05-13 | 广州市中南机电工程有限公司 | Large-diameter pipe flow monitoring device |
| CN206990030U (en) * | 2017-06-30 | 2018-02-09 | 同济大学 | The flowmeter that a kind of range is expanded |
-
2020
- 2020-05-25 CN CN202010445872.4A patent/CN111637989A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201264A (en) * | 2006-12-14 | 2008-06-18 | 西北工业大学 | Device for shunting and surveying current with broad measuring range |
| CN202002684U (en) * | 2011-01-25 | 2011-10-05 | 上海金将普实业有限公司 | Metering device with wide measuring range |
| CN104154960A (en) * | 2014-08-01 | 2014-11-19 | 衢州市鼎盛化工科技有限公司 | Hall-effect large-diameter pipeline flowmeter |
| CN104614025A (en) * | 2015-02-15 | 2015-05-13 | 广州市中南机电工程有限公司 | Large-diameter pipe flow monitoring device |
| CN206990030U (en) * | 2017-06-30 | 2018-02-09 | 同济大学 | The flowmeter that a kind of range is expanded |
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Application publication date: 20200908 |