CN102829897A - Method for ultrasonic measuring heat quantity - Google Patents
Method for ultrasonic measuring heat quantity Download PDFInfo
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- CN102829897A CN102829897A CN2012102487107A CN201210248710A CN102829897A CN 102829897 A CN102829897 A CN 102829897A CN 2012102487107 A CN2012102487107 A CN 2012102487107A CN 201210248710 A CN201210248710 A CN 201210248710A CN 102829897 A CN102829897 A CN 102829897A
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Abstract
The invention mainly discloses a method for ultrasonic measuring heat quantity. The method comprises the following steps: 1, measuring temperatures of a water outlet and a backwater position, respectively, to obtain a temperature difference of the two; 2, detecting flow velocity of a medium, according to a formula, wherein [rho] is medium density, S is a sectional area of a pipe through which the medium passes, v is medium flow velocity, and t is flow time, calculating to obtain mass of the medium which flows through the sectional area; 3, and calculating to obtain the heat quantity a user consumes according to the formula. An algorithm in the method is simple, and enables to accurately meter heat (cold) quantity the users consume in a heating (cooling) supply system.
Description
Technical field
The present invention relates to the technical field of meter fluid heat, special relevant with a kind of method of ultrasonic measurement heat.
Background technology
Calorimeter be in the heat supply system by the crucial instrument and the important evidence of heat metering charge, technical indicators such as its measuring accuracy, job stability are very important.With heat (cold) water is the user was consumed in central heating (cooling) system of media heat (cold) amount, relevant with heat (cold) discharge and confession, the braised value of backwater.Along with China installs calorimeter and carries out the popularization by family meterage work the covil construction of central heating, the calorimeter of household metering has also welcome an extraordinary developing period.Calorimeter has types such as mechanical type and ultrasonic type, and ultrasonic calorimeter is one of developing direction of heating system.Ultrasonic calorimeter product on the present home market, its flow measurement stability and measuring accuracy are not good enough, and metering is accurately when just installing; Deviation will appear after after a while; To these defectives, the inventor designs a kind of method of ultrasonic measurement heat, and this case produces thus.
Summary of the invention
The purpose of this invention is to provide a kind of method of ultrasonic measurement heat, algorithm is simple, realizes heat (cold) amount that the user consumed in accurate measurement heat supply (cooling) system.
In order to achieve the above object, the present invention realizes through following technical scheme:
A kind of method of ultrasonic measurement heat may further comprise the steps:
One, measures the temperature at water outlet place, backwater place respectively, draw both temperature differences
;
Two, detection is at the flow velocity
of media flow; According to formula
; Wherein
is Media density;
is the sectional area of the pipeline of flowing through;
is velocity of medium;
is flowing time, calculates the mass of medium that flows through;
Three,, calculate the heat
that the user consumes according to formula
.
In the described first step; With the backwater place temperature sensor is set respectively in water outlet place, draws
by both temperature difference.
In described second step, in medium, lay a pair of ultrasonic transmitter-receiver, alternately receive and dispatch ultrasound wave, draw the speed of ultrasound wave under following current and adverse current environment, calculate velocity of medium thus.
After adopting such scheme, the present invention has many beneficial effects:
Can detect the temperature of water outlet and backwater among the present invention through two temperature sensors; Draw temperature gap; And cooperate ultrasonic transmitter-receiver to come test fluid speed again; Thus outflow, and these data all be sent in the controller unit calculate, feed back on the Displaying Meter after calculating accurate calorie value.Account form of the present invention is simple, and numerical measuring is convenient, and precision is high, can be widely used in the heat metering of each isolated user.
Description of drawings
Fig. 1 is the scheme of installation of preferred embodiment of the present invention;
Fig. 2 connects synoptic diagram for the module of preferred embodiment of the present invention.
Embodiment
In conjunction with accompanying drawing, preferred embodiment of the present invention is explained further details.
A kind of method of ultrasonic measurement heat at first needed to lay the test end equipment before calculating, these devices mainly comprise temperature sensor 1 and temperature sensor 22, a pair of ultrasonic transmitter- receiver 31,32, controller unit 6, display instrument 7.
In the pipeline of medium circulation; Be laid with a pair of ultrasonic transmitter-receiver of placing in opposite directions 31,32; Both alternately receive and dispatch ultrasound wave, come to measure indirectly flow rate of fluid, a kind of indirect measurement that comes calculated flow rate by flow velocity through the following current and the adverse current propagation time difference of observation ultrasound wave in medium.This algorithm is not done here and is given unnecessary details originally as routine techniques general knowledge in the ultrasonic technology field.
Functional module of the present invention connects as shown in Figure 2, and temperature sensor 1, temperature sensor 22, a pair of ultrasonic transmitter- receiver 31,32 are connected on the input end of controller unit 6, connects display instrument 7 on the output terminal of controller unit 6.
Present embodiment middle controller unit 6 adopts the single-chip microcomputer form, and portion has calculation procedure within it.Because the formula
of heat; The temperature difference that
supplies water for medium and backwater is drawn; Can calculate from both temperature differences of temperature sensor 1, temperature sensor 22; And
is the mass of medium that expression is flow through, and can come to draw indirectly through detected flow velocity.Specific as follows:
; Wherein
is Media density;
is the sectional area of the pipeline of flowing through;
is velocity of medium, and
is flowing time.
thus; This formula calculating is enrolled to controller unit 6 internal processes; When the resulting data of actual detected are input in the controller unit 6; Just can directly calculate accurate result, and this result's feedback is shown on the display instrument 7.
The foregoing description only is used to the inventive concept of the present invention of explaining, but not to the qualification of rights protection of the present invention, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should fall into protection scope of the present invention.
Claims (3)
1. the method for a ultrasonic measurement heat is characterized in that may further comprise the steps:
One, measures the temperature at water outlet place, backwater place respectively, draw both temperature differences
;
Two, detection is at the flow velocity
of media flow; According to formula
; Wherein
is Media density;
is the sectional area of the pipeline of flowing through;
is velocity of medium;
is flowing time, calculates the mass of medium that flows through;
Three,, calculate the heat
that the user consumes according to formula
.
2. the method for a kind of ultrasonic measurement heat as claimed in claim 1; It is characterized in that: in the described first step; With the backwater place temperature sensor is set respectively in water outlet place, draws
by both temperature difference.
3. the method for a kind of ultrasonic measurement heat as claimed in claim 1; It is characterized in that: in described second step, in medium, lay a pair of ultrasonic transmitter-receiver, alternately receive and dispatch ultrasound wave; Draw the speed of ultrasound wave under following current and adverse current environment, calculate velocity of medium thus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102487107A CN102829897A (en) | 2012-07-18 | 2012-07-18 | Method for ultrasonic measuring heat quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102487107A CN102829897A (en) | 2012-07-18 | 2012-07-18 | Method for ultrasonic measuring heat quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102829897A true CN102829897A (en) | 2012-12-19 |
Family
ID=47333111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102487107A Pending CN102829897A (en) | 2012-07-18 | 2012-07-18 | Method for ultrasonic measuring heat quantity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102829897A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252785A (en) * | 2011-06-10 | 2011-11-23 | 吴兴中 | Ultrasonic heat and cold meter through time difference process and metering method thereof |
-
2012
- 2012-07-18 CN CN2012102487107A patent/CN102829897A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252785A (en) * | 2011-06-10 | 2011-11-23 | 吴兴中 | Ultrasonic heat and cold meter through time difference process and metering method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘永峰: "《热工基础与发动机原理》", 31 January 2012, 机械工业出版社 * |
| 张宁 等: "超低功耗超声波热量表的设计", 《PLC&FA》 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121219 |