JPH0119062Y2 - - Google Patents
Info
- Publication number
- JPH0119062Y2 JPH0119062Y2 JP3868683U JP3868683U JPH0119062Y2 JP H0119062 Y2 JPH0119062 Y2 JP H0119062Y2 JP 3868683 U JP3868683 U JP 3868683U JP 3868683 U JP3868683 U JP 3868683U JP H0119062 Y2 JPH0119062 Y2 JP H0119062Y2
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- temperature
- signal
- correction
- counter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 10
- 230000001186 cumulative effect Effects 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Landscapes
- Details Of Flowmeters (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【考案の詳細な説明】
本考案は管路を流れる流体の平均温度を検出す
る新規な装置に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel device for detecting the average temperature of a fluid flowing through a conduit.
従来、管路を流れる流体の瞬時的な温度を検出
する検出装置は知られている。 2. Description of the Related Art Detection devices that detect the instantaneous temperature of a fluid flowing through a pipe are known.
しかし乍ら、従来の検出装置すなわち温度計乃
至温度感知器ではある期間内に管路を流れた流体
全体に対する平均温度を検出し得ないため、従来
温度及び流量の時間的変化のチヤートへの記録に
基づいて平均温度を求めていた。 However, conventional detection devices, such as thermometers or temperature sensors, cannot detect the average temperature of the entire fluid flowing through the pipe within a certain period of time, so it is difficult to record temporal changes in temperature and flow rate on a chart. The average temperature was calculated based on
本考案は前記した点に鑑みなされたものであ
り、その目的とするところは管路を流れる流体の
平均温度を自動的に検出し得る平均温度検出装置
を提供することにある。 The present invention has been devised in view of the above-mentioned points, and its purpose is to provide an average temperature detection device that can automatically detect the average temperature of a fluid flowing through a pipe.
本発明によれば、前記目的は、管路を流れる流
体の流量に応じて流量信号を出力する流量計手段
と、設定した流量を表わす設定流量信号を出力す
る流量設定器と、前記流量信号に基づき、管路を
流れる流体の流量が前記設定流量となる毎に該流
体の温度に応じた補正パラメータを出力する第一
の演算手段と、前記設定流量信号及び補正パラメ
ータに応じて、基準温度での設定流量を表わす基
準温度設定流量信号を出力する第二の演算手段
と、該基準温度設定流量信号と前記設定流量信号
との差を表わす温度補正流量信号を出力する第三
の演算手段と、該温度補正流量信号を積算する補
正カウンタ手段と、前記流量信号を積算するカウ
ンタ手段と、このカウンタ手段の積算流量と補正
カウンタ手段の積算補正流量とに基づいて前記流
体の平均温度を求める第四の演算手段とを有して
なる平均温度検出装置により達成される。 According to the present invention, the above objects include: a flowmeter means for outputting a flow rate signal in accordance with the flow rate of fluid flowing through a pipe; a flow rate setting device for outputting a set flow rate signal representing a set flow rate; a first calculating means that outputs a correction parameter according to the temperature of the fluid each time the flow rate of the fluid flowing through the pipe reaches the set flow rate; a second calculation means for outputting a reference temperature setting flow rate signal representing the set flow rate of the second calculation means; a third calculation means for outputting a temperature correction flow signal representing the difference between the reference temperature setting flow rate signal and the set flow rate signal; a correction counter means for integrating the temperature-corrected flow rate signal; a counter means for integrating the flow rate signal; and a fourth means for calculating the average temperature of the fluid based on the integrated flow rate of the counter means and the integrated correction flow rate of the correction counter means. This is achieved by an average temperature detecting device having calculation means.
次に、本考案による好ましい一具体例の平均温
度検出装置１を図面に基づいて説明する。 Next, a preferred embodiment of the average temperature detection device 1 according to the present invention will be explained based on the drawings.
図中、２は原油等の流体が内部を流れるパイプ
ライン等の管路であり、３は管路２中に設置され
ており管路２中を流れる流体の流量を検出する流
量計である。流量計３は例えば流体の体積流量Ａ
を検出すべく構成されている。 In the figure, 2 is a conduit such as a pipeline through which a fluid such as crude oil flows, and 3 is a flow meter installed in the conduit 2 to detect the flow rate of the fluid flowing through the conduit 2. The flow meter 3 measures the volumetric flow rate A of the fluid, for example.
is configured to detect.
４は流量計３に結合されたパルス発生器であ
り、このパルス発生器４と流量計３は流量計手段
を構成する。パルス発生器４は、流量計３で設定
流量としての所与の体積流量BTが計測される毎
に流量信号としての流量パルス信号Ｃを出力す
る。流量パルス信号Ｃは一つのパルスからなつて
いても複数のパルスからなつていてもよい。 4 is a pulse generator coupled to the flow meter 3, and the pulse generator 4 and the flow meter 3 constitute flow meter means. The pulse generator 4 outputs a flow rate pulse signal C as a flow rate signal every time the flow meter 3 measures a given volumetric flow rate B T as a set flow rate. The flow rate pulse signal C may consist of one pulse or a plurality of pulses.
５は流体の温度Ｔを連続的に検出すべく流量計
３の上流側又は下流側で流量計３の近傍に設けら
れた温度感知器であり、温度感知器５は流体の温
度Ｔを表わす温度信号Ｔを連続的に出力する。流
量計３の上下流側に感知器５を設け、平均値を温
度Ｔとして出力してもよい。 Reference numeral 5 denotes a temperature sensor installed near the flow meter 3 on the upstream or downstream side of the flow meter 3 to continuously detect the temperature T of the fluid. The signal T is output continuously. A sensor 5 may be provided upstream and downstream of the flow meter 3, and the average value may be output as the temperature T.
６は発生器４及び温度感知器５に接続された温
度補正パルス発生回路であり、温度補正パルス発
生回路６は４から流量パルス信号Ｃを受け取る毎
に、このときの感知器５にる検出装置Ｔに基づき
温度Ｔでの体積流量BTを基準温度TOでの基準温
度設定流量信としての体積流量BTOに補正するに
必要な温度補正流量信号としての温度補正パルス
信号Ｄを出力する。流量BTOはBTO＝BT・ｆ（Ｔ）
の形で表わされる。 6 is a temperature correction pulse generation circuit connected to the generator 4 and the temperature sensor 5, and every time the temperature correction pulse generation circuit 6 receives the flow rate pulse signal C from 4, the temperature correction pulse generation circuit 6 detects the detection device of the sensor 5 at this time. Based on T, a temperature correction pulse signal D is output as a temperature correction flow signal necessary for correcting the volume flow rate B T at temperature T to the volume flow rate B TO as a reference temperature setting flow rate signal at reference temperature TO. The flow rate B TO is B TO = B T・f(T)
It is expressed in the form of
ｆ（Ｔ）は計測温度Ｔに依存する補正パラメー
タであり、この関数ｆ（Ｔ）の値は温度補正パル
ス発生回路６内の第一の演算手段としての演算器
６ａにより信号Ｃを受け取る毎に計測温度Ｔに応
じて求められる。流体の体積は温度Ｔに依存し、
例えば、その熱膨張係数Ｋが比較的小さく且つ温
度に依存しないと仮定し得る場合、ｆ（Ｔ）＝１−
Ｋ（Ｔ−TO）の形で表わされる。温度補正パル
ス発生回路６中、６ｂは流量計３の設定流量とし
ての所定流量値BTが変更可能に設定された流量
設定器６ｃはBTO＝BT・ｆ（Ｔ）なる掛算を行な
う第二の演算手段としての掛算器、６ｄは（BT
−BTO）なる引算を行なう減算器、６ｅは差BD＝
BT−BTOに対応する温度補正流量信号としての温
度補正パルス信号Ｄを発生するパルス発生器であ
る。この温度補正パルス信号Ｄは例えば差BDに
比例する数のパルスからなる。減算器６ｄとパル
ス発生器６ｅは第三の演算手段を構成する。 f(T) is a correction parameter that depends on the measured temperature T, and the value of this function f(T) is calculated every time the signal C is received by the arithmetic unit 6a as the first calculation means in the temperature correction pulse generation circuit 6. It is determined according to the measured temperature T. The volume of the fluid depends on the temperature T,
For example, if its coefficient of thermal expansion K can be assumed to be relatively small and independent of temperature, then f(T)=1−
It is expressed in the form K(T-TO). In the temperature correction pulse generation circuit 6 , 6b is a flow rate setting device 6c which is set to be able to change a predetermined flow rate value B T as the set flow rate of the flow meter 3. The multiplier 6d as the second calculation means is (B T
−B TO ), 6e is the difference B D =
This is a pulse generator that generates a temperature correction pulse signal D as a temperature correction flow rate signal corresponding to B T -B TO . This temperature correction pulse signal D consists of, for example, a number of pulses proportional to the difference B D. The subtracter 6d and the pulse generator 6e constitute a third calculation means.
７は温度補正パルス信号Ｄを積算する補正カウ
ンタであり、補正カウンタ７は例えば温度補正パ
ルス信号Ｄのパルス数を計数する。補正カウンタ
７は、手動ボタン等により指示信号Ｅが与えられ
る毎にリセツト信号Ｆを発するリセツト回路８か
らのリセツト信号Ｆを受け取ると零にリセツトさ
れる。従つて補正カウンタ７は指示信号Ｅが出さ
れた後の温度補正パルス信号Ｄを積算して積算値
QDを収納している。補正カウンタ７とリセツト
回路８は補正カウンタ手段を構成する。 Reference numeral 7 denotes a correction counter that integrates the temperature correction pulse signal D, and the correction counter 7 counts the number of pulses of the temperature correction pulse signal D, for example. The correction counter 7 is reset to zero upon receiving a reset signal F from a reset circuit 8 which generates a reset signal F every time an instruction signal E is applied by a manual button or the like. Therefore, the correction counter 7 integrates the temperature correction pulse signal D after the instruction signal E is issued to obtain an integrated value.
Stores Q D. The correction counter 7 and the reset circuit 8 constitute correction counter means.
９は流量パルス信号Ｃを積算するカウンタであ
り、カウンタ９は例えば流量パルス信号Ｃのパル
ス数を計数する。カウンタ９はリセツト信号Ｆを
受け取る毎に零にリセツトされる。従つてカウン
タ９は指示信号Ｅが出された後の流量パルス信号
Ｃを積算して積算値QCを収納している。カウン
タ９とリセツト回路８はカウンタ手段を構成す
る。 Reference numeral 9 denotes a counter that integrates the flow rate pulse signal C, and the counter 9 counts the number of pulses of the flow rate pulse signal C, for example. Counter 9 is reset to zero each time it receives reset signal F. Therefore, the counter 9 integrates the flow rate pulse signal C after the instruction signal E is issued, and stores the integrated value Q C. Counter 9 and reset circuit 8 constitute counter means.
この積算値QCは温度補正されていない総体積
流量、換言すれば流れた流体の温度補正されてい
ない総体積に相当している。一方積算値QDは積
算体積QCに対して温度補正されるべき総体積QD
に相当している。 This integrated value Q C corresponds to the total volumetric flow rate without temperature correction, in other words, the total volume of the flowing fluid without temperature correction. On the other hand, the integrated value Q D is the total volume Q D that should be temperature-corrected for the integrated volume Q C.
is equivalent to
１０はカウンタ９での積算流量QCと補正カウ
ンタ７での積算補正流量QDとに基づいて、
Tav＝f-1（QD／QC）
の形で流体の平均温度Tavを求める第四の演算手
段としての平均温度演算器である。ここでf-1
（QD／QC）はQD／QC＝ｆ（Tav）の逆関数である。
ここで得られた平均温度Tavは通常の流体に対し
て実質的に流れた流体全体の平均温度をみなし得
る。この平均温度Tavは流体の比熱が温度に依存
しないとみなせる場合、流れた流体全体を混ぜ合
わせた場合の流体の平衡温度に相当する。 10 calculates the average temperature T av of the fluid based on the cumulative flow rate Q C at the counter 9 and the cumulative corrected flow rate Q D at the correction counter 7 in the form T av = f -1 (Q D /Q C ). This is an average temperature calculator as a fourth calculation means. where f -1
(Q D /Q C ) is an inverse function of Q D /Q C = f(T av ).
The average temperature T av obtained here can be regarded as the average temperature of the entire fluid that has substantially flowed in the normal fluid. This average temperature T av corresponds to the equilibrium temperature of the fluid when all flowing fluids are mixed, if the specific heat of the fluid can be considered to be independent of temperature.
１１は平均温度演算器１０で求められた平均温
度Tavを表示する平均温度表示器であり、この平
均温度表示器１１は、スイツチで指示信号Ｅが与
えられて後、例えば流体が管路２を流れ初めて
後、現時点までに管路２を流れた流体の平均温度
Tavを表示する。 Reference numeral 11 denotes an average temperature indicator that displays the average temperature T av obtained by the average temperature calculator 10, and this average temperature indicator 11 displays the average temperature T av obtained by the average temperature calculator 10. The average temperature of the fluid that has flowed through pipe 2 up to this point after it first flows through
Show T av .
１２は計測流量QCを表示する表示器であり、
１３はカウンタ７，９で計数された積算流量QD，
QCに基づいて基準温度TOに換算した場合の積算
流量QG（＝QC−QD）を求めて流量値QGを表示す
る温度補正済流量表示器である。表示器１３は積
算流量QGを求める演算器を含む。 12 is a display that displays the measured flow rate QC ;
13 is the cumulative flow rate Q D counted by counters 7 and 9,
This is a temperature-corrected flow rate indicator that calculates the cumulative flow rate Q G (=Q C - Q D ) when converted to a reference temperature T O based on Q C and displays the flow rate value Q G. The display 13 includes a calculator that calculates the cumulative flow rate QG .
１４は各時点での流体の温度すなわち瞬時温度
Ｔを表示する瞬時温度表示器である。１５はＡ／
Ｄ変換器である。 Reference numeral 14 denotes an instantaneous temperature indicator that displays the temperature of the fluid at each point in time, that is, the instantaneous temperature T. 15 is A/
It is a D converter.
尚、温度補正パルス発生回路６においてＡ／Ｄ
変換器が例えば演算器６ａと掛算器６ｃとの間に
設けられてもよい。もちろん、温度感知器５の出
力側にＡ／Ｄ変換器１５を設けるようにしてもよ
い。 In addition, in the temperature correction pulse generation circuit 6, the A/D
A converter may be provided, for example, between the arithmetic unit 6a and the multiplier 6c. Of course, the A/D converter 15 may be provided on the output side of the temperature sensor 5.
また検出装置１の全体又は大部分をアナログ回
路で構成してもよい。 Further, the entire or most part of the detection device 1 may be configured with an analog circuit.
以上において、値QCとQDとは数桁の違いがあ
り得る故、カウンタ９の内容が１である場合例え
ば１m3とみなし、カウンタ７の内容が１である場
合例えば10-3m3とみなすようにして演算器１０等
でデータ処理するようにしてもよい。 In the above, since the values Q C and Q D may differ by several orders of magnitude, if the content of counter 9 is 1, it is assumed to be 1 m 3 , for example, and if the content of counter 7 is 1, it is considered to be 10 -3 m 3 , for example. The data may be processed by the arithmetic unit 10 or the like in such a manner that it is regarded as .
尚、リセツト回路８から１時間毎、１日毎等一
定時間毎にリセツト信号Ｆが出されるように、リ
セツト回路８を構成してもよい。 Incidentally, the reset circuit 8 may be configured so that the reset signal F is outputted from the reset circuit 8 at regular intervals such as every hour or every day.
また以上においては基準温度TOが被測流体で
想定される下限温度以下である例について説明し
たが、基準温度TOを上限温度以上にしてもよく、
また被測流体で想定される平均的な中間的温度に
しておいてもよい。例えば基準温度TOを所与の
中間的温度とする場合、カウンタ７をアツプダウ
ンカウンタとし、補正温度信号Ｄとしてアツプダ
ウンカウンタ７の内容を増加せしめるパルス又は
減少せしめるパルスを出力するように温度補正パ
ルス発生回路６を構成すればよい。 Furthermore, in the above, an example has been explained in which the reference temperature T O is below the lower limit temperature assumed for the fluid to be measured, but the reference temperature T O may be set above the upper limit temperature.
Alternatively, the temperature may be set to an average intermediate temperature assumed for the fluid to be measured. For example, when the reference temperature T O is a given intermediate temperature, the counter 7 is used as an up-down counter, and the temperature is corrected so as to output a pulse that increases or decreases the content of the up-down counter 7 as the corrected temperature signal D. What is necessary is to configure the pulse generation circuit 6.
前記の如く構成された平均温度検出装置１で
は、平均温度Tavが自動的に検出され一目で確認
し得るように表示され得るのみならず、流量計測
において重要な情報、計測流量QC、温度補正流
量QG、瞬時温度Ｔ、及び平均温度Tavが集中的に
管理され得る。 The average temperature detection device 1 configured as described above not only automatically detects the average temperature T av and displays it so that it can be confirmed at a glance, but also displays important information in flow rate measurement, the measured flow rate Q C , and the temperature. The corrected flow rate Q G , the instantaneous temperature T and the average temperature T av can be managed centrally.
以上の如く本考案の平均温度検出装置では、管
路を流れる流体の流量に応じて流量信号を出力す
る流量計手段と、設定した流量を表わす設定流量
信号を出力する流量設定器と、前記流量信号に基
づき、管路を流れる流体の流量が前記設定流量と
なる毎に該流体の温度に応じた補正パラメータを
出力する第一の演算手段と、前記設定流量信号及
び補正パラメータに応じて、基準温度での設定流
量を表わす基準温度設定流量信号を出力する第二
の演算手段と、該基準温度設定流量信号と前記設
定流量信号との差を表わす温度補正流量信号を出
力する第三の演算手段と、該温度補正流量信号を
積算する補正カウンタ手段と、前記流量信号を積
算するカウンタ手段と、このカウンタ手段の積算
流量と補正カウンタ手段の積算補正流量とに基づ
いて前記流体の平均温度を求める第四の演算手段
とが設けられているために、管路を流れた流体の
平均温度が自動的に検出され得る。 As described above, the average temperature detection device of the present invention includes: a flowmeter means for outputting a flow rate signal according to the flow rate of fluid flowing through a pipe; a flow rate setting device for outputting a set flow rate signal representing a set flow rate; a first calculating means that outputs a correction parameter according to the temperature of the fluid each time the flow rate of the fluid flowing through the pipe reaches the set flow rate based on the signal; a second calculation means for outputting a reference temperature set flow rate signal representing the set flow rate at the temperature; and a third calculation means for outputting a temperature corrected flow rate signal representing the difference between the reference temperature set flow rate signal and the set flow rate signal. , a correction counter means for integrating the temperature-corrected flow rate signal, a counter means for integrating the flow rate signal, and determining an average temperature of the fluid based on the integrated flow rate of the counter means and the integrated correction flow rate of the correction counter means. Since the fourth calculating means is provided, the average temperature of the fluid flowing through the pipe can be automatically detected.
図は本考案による好ましい一具体例の平均温度
検出装置の説明図である。
２……管路、３……流量計、４……パルス発生
器、６……温度補正パルス発生回路、７……補正
カウンタ、９……カウンタ、１０……平均温度演
算器。
The figure is an explanatory diagram of a preferred embodiment of the average temperature detection device according to the present invention. 2... Pipeline, 3... Flow meter, 4... Pulse generator, 6... Temperature correction pulse generation circuit, 7... Correction counter, 9... Counter, 10... Average temperature calculator.
Claims (1)
力する流量計手段と、設定した流量を表わす設定
流量信号を出力する流量設定器と、前記流量信号
に基づき、管路を流れる流体の流量が前記設定流
量となる毎に該流体の温度に応じた補正パラメー
タを出力する第一の演算手段と、前記設定流量信
号及び補正パラメータに応じて、基準温度での設
定流量を表わす基準温度設定流量信号を出力する
第二の演算手段と、該基準温度設定流量信号と前
記設定流量信号との差を表わす温度補正流量信号
を出力する第三の演算手段と、該温度補正流量信
号を積算する補正カウンタ手段と、前記流量信号
を積算するカウンタ手段と、このカウンタ手段の
積算流量と補正カウンタ手段の積算補正流量とに
基づいて前記流体の平均温度を求める第四の演算
手段とを有してなる平均温度検出装置。 a flowmeter means for outputting a flow rate signal in accordance with the flow rate of fluid flowing through the conduit; a flow rate setting device for outputting a set flow rate signal representing a set flow rate; a first calculation means that outputs a correction parameter according to the temperature of the fluid each time the set flow rate is reached; and a reference temperature set flow rate signal that represents the set flow rate at a reference temperature in accordance with the set flow rate signal and the correction parameter. a third calculation means that outputs a temperature-corrected flow rate signal representing the difference between the reference temperature set flow rate signal and the set flow rate signal; and a correction counter that integrates the temperature-corrected flow rate signal. means, a counter means for integrating the flow rate signal, and a fourth calculation means for calculating the average temperature of the fluid based on the integrated flow rate of the counter means and the integrated corrected flow rate of the correction counter means. Temperature detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3868683U JPS59144535U (en) | 1983-03-17 | 1983-03-17 | Average temperature detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3868683U JPS59144535U (en) | 1983-03-17 | 1983-03-17 | Average temperature detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59144535U JPS59144535U (en) | 1984-09-27 |
| JPH0119062Y2 true JPH0119062Y2 (en) | 1989-06-02 |
Family
ID=30169354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3868683U Granted JPS59144535U (en) | 1983-03-17 | 1983-03-17 | Average temperature detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59144535U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6419110B1 (en) | 2001-07-03 | 2002-07-16 | Container Development, Ltd. | Double-seamed can end and method for forming |
| JP2003065816A (en) * | 2001-08-27 | 2003-03-05 | Yokogawa Electric Corp | Electromagnetic flowmeter |
-
1983
- 1983-03-17 JP JP3868683U patent/JPS59144535U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59144535U (en) | 1984-09-27 |
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