CN105279390A - Water meter calculation model establishment method for determining matched caliber for replacement - Google Patents
Water meter calculation model establishment method for determining matched caliber for replacement Download PDFInfo
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- CN105279390A CN105279390A CN201510862149.5A CN201510862149A CN105279390A CN 105279390 A CN105279390 A CN 105279390A CN 201510862149 A CN201510862149 A CN 201510862149A CN 105279390 A CN105279390 A CN 105279390A
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Abstract
A water meter calculation model establishment method for determining the matched caliber for replacement sequentially comprises the following steps that 1, maximum instantaneous flow calculation is performed according to historical meter reading data; 2, an absolute difference value of the caliber flow is calculated; 3, auxiliary calculation is performed according to the maximum and minimum instantaneous flows and an average flow velocity coefficient; 4, the matched water meter caliber for replacement is determined according to the maximum and minimum metering efficiencies, the average flow velocity, the monthly increased water using amount and the production and sale difference rate reduced by adopting the caliber and an absolute value sequence of flow difference of a water meter with the caliber. By the adoption of the water meter calculation model establishment method, a typical calculation model in cooperation with auxiliary calculation is established based on collection, mining and analysis of a large number of historical meter reading data, the water meter caliber suitable for installation of a user can be more accurately calculated, and the phenomenon that the user blindly chooses a water meter for replacement can be avoided. In addition, the economic flow of the pipe diameter is used as a reference in water meter caliber calculation, so that the pressure loss of a pipe network is lowered, the water meter is in a most economical operation state, the service life is prolonged, the production and sale difference rates of water enterprises are reduced, and users' satisfaction is also improved.
Description
Technical field
The present invention relates to water meter, particularly relate to a kind of water meter for changing adaptive bore and calculate method for establishing model.
Background technology
At the water pump composite initial stage, water enterprise, often according to the basic document that user provides, such as amount, use water period etc., is estimated the maximum water consumption of user, then is estimated the water pump composite selecting larger bore.Water meter bore is selected excessive, causes initial-flow excessive, often makes water meter be in lower limit flow and runs, roll up the error in dipping of water meter, cause water to be missed, affect the economic benefit of water enterprise; And water meter bore is selected too small, water meter can be made again to be in super upper limit flow and to run, shorten the serviceable life of water meter, increase the cost of water enterprise.In addition, to be installed or after installing and using a period of time at water meter, the basic document of user may change, cause the error in dipping of water meter, make to meet the requirement of user to water consumption, and change more bigbore water meter, again cannot be quantitative, rule of thumb can only judge, cause repeatedly changing and all can not meet the requirement of user to water consumption.
Summary of the invention
Technical matters to be solved by this invention is the defect making up above-mentioned prior art, provides a kind of water meter for changing adaptive bore to calculate method for establishing model.
Technical matters of the present invention is solved by the following technical programs.
The feature that this water meter for changing adaptive bore calculates method for establishing model is:
Described water meter computation model be based on a large amount of history meter reading data collection, excavate with analysis COMPREHENSIVE CALCULATING model, its method for building up has following steps successively:
1) maximum instantaneous flow rate calculation: by Real-time Collection or manual input history meter reading data, described history meter reading data comprises previous year the largest operating moon meter reading and maximum month to date flow, according to user's water use variation rule, i.e. variation factor, carries out maximum instantaneous flow rate calculation;
2) bore difference in flow absolute value calculates;
3) aided solving: carry out aided solving according to maximum instantaneous flow, minimum instantaneous delivery and mean flow rate coefficient;
4) determine the adaptive water meter bore changed: the maximum measurement efficiency, minimum measurement efficiency, mean flow rate, the water consumption of moon increase and the leakage ratio of bore reduction that obtain according to aided solving, and bore difference in flow absolute value calculates the absolute value sequence Z of certain the bore watermeter flowing rate difference obtained
1, Z
2... Z
n, determine the water meter bore of the adaptation changed.
Technical matters of the present invention is solved by following further technical scheme.
Described step 1) the relational expression of maximum instantaneous flow as follows:
Q＝K
h×Q
maxΣ÷30÷24(1)
In formula:
Q: maximum instantaneous flow (m
3/ h);
Q
max Σ: maximum month to date flow (m
3/ h), i.e. the largest moon meter reading of previous year;
K
h: variation factor, determines by use matter with water degree of uniformity;
30: the number of days (d) of most Gao Yue, by 30 (d);
24: with water time (h/d), every day is by 24 (h).
Described step 2) the relational expression of bore difference in flow absolute value as follows:
Z
j＝∣(Q
max–Q
3j×0.5)∣(2)
In formula:
Z
j: the absolute difference that certain bore watermeter flowing rate difference is formed, j is one in natural sequence 1 ~ n;
Q
max: maximum instantaneous flow (m
3/ h);
Q3
j: the standard common flow (m of water meter bore
3/ h), determine by consulting hydromechanical professional technique data " caliber/flow velocity/flow table of comparisons ".
Described step 3) aided solving comprise following calculating:
31) according to the maximum measurement efficiency of maximum instantaneous flow rate calculation
η
max＝Q
max÷Q3；(3)
In formula:
η
max: maximum measurement efficiency (%);
Q
max: maximum instantaneous flow (m
3/ h);
Q3: the standard common flow (m of adaptive water meter bore
3/ h);
32) minimum measurement efficiency is calculated according to minimum instantaneous delivery
η
min＝Q
min÷Q3(4)
In formula:
η
min: minimum measurement efficiency (%);
Q
min: minimum instantaneous delivery (m
3/ h);
Q3: the standard common flow (m of adaptive water meter bore
3/ h);
33) according to mean flow rate coefficient calculations pipe network mean flow rate
V＝Q
max÷K；(5)
In formula:
V: mean flow rate (m/s);
Q
max: maximum instantaneous flow (m
3/ h);
K: mean flow rate coefficient;
34) according to the water consumption that user's use water Time Calculation moon increases
Water consumption (the m that the moon increases
3)=(former water meter bore minimum flow-adaptive bore minimum flow) (m
3/ h) × with the number of days (d) of water time (h/d) × monthly;
35) leakage ratio of bore reduction is calculated according to the water consumption increased by the moon
Leakage ratio (%)=-(water consumption that the moon increases) (m
3) ÷ (last month check meter the increase of the number+moon sell the water yield) (m
3) × 100%.
Described step 4) determine that the substep logic changing adaptive water meter bore is as follows:
If Z
1<Z
2, determine Z
1the water meter bore DN15 of value correspondence is the adaptive water meter bore changed, if Z
1≮ Z
2, carry out next step and judge;
If Z
2<Z
3, determine Z
2the water meter bore DN20 of value correspondence is the adaptive water meter bore changed, if Z
2≮ Z
3, carry out next step and judge;
……
If Z
n-1<Z
n, determine Z
n-1the water meter bore of value correspondence is the adaptive water meter bore changed, if Z
n-1≮ Z
n, can not determine the adaptive water meter bore of replacing.
The present invention's beneficial effect is compared with prior art:
The inventive method comprises collection, the excavation of the operating maximum month to date flow of previous year based on a large amount of history meter reading data and analyzes, set up the typical calculation model coordinating aided solving, more accurately can calculate the water meter bore of the suitable installation of user, user is avoided blindly to select to change water meter, and water meter calculation of diameter with the economic flow of caliber for benchmark, pipe network crushing is reduced, water meter is in optimum economical operation state, serviceable life extends, both reduce the leakage ratio of water enterprise, promote user satisfaction again.
Embodiment
Below in conjunction with embodiment, the present invention will be described.
Water meter for changing happy cell adaptation bore calculates a method for establishing model, and community house lead in caliber is DN100, and the water meter bore of installation is DN100, and reading of checking meter by the largest moon for 2014 is 640m
3variation factor is 1.6, the water meter selected meets national standard GB/T 778.1/2/3-2007 " closing measurement Chilled Drinking Water water meter and the hot water meter of discharge in full packages road ", water meter computation model be based on a large amount of history meter reading data collection, excavate with analysis COMPREHENSIVE CALCULATING model, its method for building up has following steps successively:
1) by Real-time Collection or manual input history meter reading data, history meter reading data comprises previous year the largest operating moon meter reading and maximum month to date flow, according to user's water use variation rule, i.e. variation factor, carry out maximum instantaneous flow rate calculation, the relational expression of maximum instantaneous flow is as follows:
Q＝K
h×Q
maxΣ÷30÷24＝1.42m
3/h(1)
In formula:
Q: maximum instantaneous flow (m
3/ h);
Q
max Σ: maximum month to date flow (m
3/ h), i.e. the largest moon meter reading of previous year;
K
h: variation factor, determines by use matter with water degree of uniformity;
30: the number of days (d) of most Gao Yue, by 30 (d);
24: with water time (h/d), every day is by 24 (h);
2) bore difference in flow absolute value calculates, and the relational expression of bore difference in flow absolute value is as follows:
Z
j＝∣(Q
max–Q
3j×0.5)∣(2)
In formula:
Z
j: the absolute difference that certain bore watermeter flowing rate difference is formed, j is one in natural sequence 1 ~ n;
Q
max: maximum instantaneous flow (m
3/ h);
Q3
j: the standard common flow (m of water meter bore
3/ h), determine by consulting hydromechanical professional technique data " caliber/flow velocity/flow table of comparisons ";
Result of calculation is as follows:
The bore difference in flow absolute value Z that water meter bore DN15 is corresponding
1be 0.67;
The bore difference in flow absolute value Z that water meter bore DN20 is corresponding
2be 0.17;
The bore difference in flow absolute value Z that water meter bore DN25 is corresponding
3be 0.33;
3) carry out aided solving according to maximum instantaneous flow, minimum instantaneous delivery and mean flow rate coefficient, aided solving comprises following calculating:
31) according to the maximum measurement efficiency of maximum instantaneous flow rate calculation
η
max＝Q
max÷Q3＝56.8％；(3)
In formula:
η
max: maximum measurement efficiency (%);
Q
max: maximum instantaneous flow (m
3/ h);
Q3: the standard common flow (m of adaptive water meter bore
3/ h);
32) minimum measurement efficiency is calculated according to minimum instantaneous delivery
η
min＝Q
min÷Q3＝32％；(4)
In formula:
η
min: minimum measurement efficiency (%);
Q
min: minimum instantaneous delivery (m
3/ h);
Q3: the standard common flow (m of adaptive water meter bore
3/ h);
33) according to mean flow rate coefficient calculations pipe network mean flow rate
V＝Q
max÷K＝0.05m/s；(5)
In formula:
V: mean flow rate (m/s);
Q
max: maximum instantaneous flow (m
3/ h);
K: mean flow rate coefficient;
34) according to the water consumption that user's use water Time Calculation moon increases
Water consumption (the m that the moon increases
3)=(former water meter bore minimum flow-adaptive bore minimum flow) (m
3/ h) × with number of days (the d)=262.5m3 of water time (h/d) × monthly;
35) leakage ratio of bore reduction is calculated according to the water consumption increased by the moon:
Leakage ratio (%)=-(water consumption that the moon increases) (m
3) ÷ (last month check meter the increase of the number+moon sell the water yield) (m
3) × 100%=-29.9%;
4) leakage ratio that the maximum measurement efficiency, minimum measurement efficiency, mean flow rate, the water consumption increased by the moon and the bore that obtain according to aided solving reduce, and bore difference in flow absolute value calculates the absolute value sequence Z of certain the bore watermeter flowing rate difference obtained
1, Z
2... Z
n, determine the water meter bore of the adaptation changed, determine that the substep logic of the water meter bore changed is as follows:
If Z
1<Z
2, determine Z
1the water meter bore DN15 of value correspondence is the adaptive water meter bore changed, if Z
1≮ Z
2, carry out next step and judge;
If Z
2<Z
3, determine Z
2the water meter bore DN20 of value correspondence is the adaptive water meter bore changed, if Z
2≮ Z
3, carry out next step and judge;
……
If Z
n-1<Z
n, determine Z
n-1the water meter bore of value correspondence is the adaptive water meter bore changed, if Z
n-1≮ Z
n, can not determine the adaptive water meter bore of replacing.
After community original water gauge bore DN100 is reduced to DN20 by this embodiment, the leakage ratio that not only can reduce water enterprise is-29.9%, and the maximum measurement efficiency that can improve water meter is 56.8%, promotes user satisfaction.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make some equivalent alternative or obvious modification without departing from the inventive concept of the premise; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by submitted to claims.
Claims (5)
1. the water meter for changing adaptive bore calculates a method for establishing model, it is characterized in that:
Described water meter computation model be based on a large amount of history meter reading data collection, excavate with analysis COMPREHENSIVE CALCULATING model, its method for building up has following steps successively:
1) maximum instantaneous flow rate calculation: by Real-time Collection or manual input history meter reading data, described history meter reading data comprises previous year the largest operating moon meter reading and maximum month to date flow, according to user's water use variation rule, i.e. variation factor, carries out maximum instantaneous flow rate calculation;
2) bore difference in flow absolute value calculates;
3) aided solving: carry out aided solving according to maximum instantaneous flow, minimum instantaneous delivery and mean flow rate coefficient;
4) determine the adaptive water meter bore changed: the maximum measurement efficiency, minimum measurement efficiency, mean flow rate, the water consumption of moon increase and the leakage ratio of bore reduction that obtain according to aided solving, and bore difference in flow absolute value calculates the absolute value sequence Z of certain the bore watermeter flowing rate difference obtained
1, Z
2... Z
n, determine the water meter bore of the adaptation changed.
2. the water meter as claimed in claim 1 for changing adaptive bore calculates method for establishing model, it is characterized in that:
Described step 1) the relational expression of maximum instantaneous flow as follows:
Q＝K
h×Q
maxΣ÷30÷24(1)
In formula:
Q: maximum instantaneous flow (m
3/ h);
Q
max Σ: maximum month to date flow (m
3/ h), i.e. the largest moon meter reading of previous year;
K
h: variation factor, determines by use matter with water degree of uniformity;
30: the number of days (d) of most Gao Yue, by 30 (d);
24: with water time (h/d), every day is by 24 (h).
3. the water meter as claimed in claim 1 for changing adaptive bore calculates method for establishing model, it is characterized in that:
Described step 2) the relational expression of bore difference in flow absolute value as follows:
Z
j＝∣(Q
max–Q
3j×0.5)∣(2)
In formula:
Z
j: the absolute difference that certain bore watermeter flowing rate difference is formed, j is one in natural sequence 1 ~ n;
Q
max: maximum instantaneous flow (m
3/ h);
Q3
j: the standard common flow (m of water meter bore
3/ h), determine by consulting hydromechanical professional technique data " caliber/flow velocity/flow table of comparisons ".
4. the water meter as claimed in claim 1 for changing adaptive bore calculates method for establishing model, it is characterized in that:
Described step 3) aided solving comprise following calculating:
31) according to the maximum measurement efficiency of maximum instantaneous flow rate calculation
η
max＝Q
max÷Q3；(3)
In formula:
η
max: maximum measurement efficiency (%);
Q
max: maximum instantaneous flow (m
3/ h);
Q3: the standard common flow (m of adaptive water meter bore
3/ h);
32) minimum measurement efficiency is calculated according to minimum instantaneous delivery
η
min＝Q
min÷Q3(4)
In formula:
η
min: minimum measurement efficiency (%);
Q
min: minimum instantaneous delivery (m
3/ h);
Q3: the standard common flow (m of adaptive water meter bore
3/ h);
33) according to mean flow rate coefficient calculations pipe network mean flow rate
V＝Q
max÷K；(5)
In formula:
V: mean flow rate (m/s);
Q
max: maximum instantaneous flow (m
3/ h);
K: mean flow rate coefficient;
34) according to the water consumption that user's use water Time Calculation moon increases
Water consumption (the m that the moon increases
3)=(former water meter bore minimum flow
-adaptive bore minimum flow) (m
3/ h) × with the number of days (d) of water time (h/d) × monthly;
35) leakage ratio of bore reduction is calculated according to the water consumption increased by the moon
Leakage ratio (%)=-(water consumption that the moon increases) (m
3)
÷ (last month check meter the increase of the number+moon sell the water yield) (m
3) × 100%.
5. the water meter as claimed in claim 1 for changing adaptive bore calculates method for establishing model, it is characterized in that:
Described step 4) determine that the substep logic changing adaptive water meter bore is as follows:
If Z
1<Z
2, determine Z
1the water meter bore DN15 of value correspondence is the adaptive water meter bore changed, if Z
1≮ Z
2, carry out next step and judge;
If Z
2<Z
3, determine Z
2the water meter bore DN20 of value correspondence is the adaptive water meter bore changed, if Z
2≮ Z
3, carry out next step and judge;
……
If Z
n-1<Z
n, determine Z
n-1the water meter bore of value correspondence is the adaptive water meter bore changed, if Z
n-1≮ Z
n, can not determine the adaptive water meter bore of replacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510862149.5A CN105279390A (en) | 2015-12-01 | 2015-12-01 | Water meter calculation model establishment method for determining matched caliber for replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510862149.5A CN105279390A (en) | 2015-12-01 | 2015-12-01 | Water meter calculation model establishment method for determining matched caliber for replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105279390A true CN105279390A (en) | 2016-01-27 |
Family
ID=55148393
Family Applications (1)
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|---|---|---|---|
| CN201510862149.5A Pending CN105279390A (en) | 2015-12-01 | 2015-12-01 | Water meter calculation model establishment method for determining matched caliber for replacement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107609770A (en) * | 2017-09-07 | 2018-01-19 | 深圳市燃气集团股份有限公司 | A kind of determination method and system of the matching of industrial and commercial customer flow table |
| CN113654610A (en) * | 2021-07-30 | 2021-11-16 | 深圳市拓安信计控仪表有限公司 | Water meter model selection matching method, system and equipment and readable storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000020219A (en) * | 1998-09-18 | 2000-04-15 | 정동식 | Method for designing flow meter |
| CN103235883A (en) * | 2013-04-23 | 2013-08-07 | 山东信通电器有限公司 | Non-contact river surface velocity measurement based regression calculation method for instantaneous flow rate |
-
2015
- 2015-12-01 CN CN201510862149.5A patent/CN105279390A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000020219A (en) * | 1998-09-18 | 2000-04-15 | 정동식 | Method for designing flow meter |
| CN103235883A (en) * | 2013-04-23 | 2013-08-07 | 山东信通电器有限公司 | Non-contact river surface velocity measurement based regression calculation method for instantaneous flow rate |
Non-Patent Citations (2)
| Title |
|---|
| 李宁 等: "选择合适水表计量 减少水量计量损失", 《城镇供水》 * |
| 钱海钢 等: "建筑工程室内给排水设计技术研究", 《商品混凝土》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107609770A (en) * | 2017-09-07 | 2018-01-19 | 深圳市燃气集团股份有限公司 | A kind of determination method and system of the matching of industrial and commercial customer flow table |
| CN113654610A (en) * | 2021-07-30 | 2021-11-16 | 深圳市拓安信计控仪表有限公司 | Water meter model selection matching method, system and equipment and readable storage medium |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160127 |
|
| RJ01 | Rejection of invention patent application after publication |