JPS6321129B2 - - Google Patents
Info
- Publication number
- JPS6321129B2 JPS6321129B2 JP57126595A JP12659582A JPS6321129B2 JP S6321129 B2 JPS6321129 B2 JP S6321129B2 JP 57126595 A JP57126595 A JP 57126595A JP 12659582 A JP12659582 A JP 12659582A JP S6321129 B2 JPS6321129 B2 JP S6321129B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- temperature
- tubes
- short
- flow meter
- 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
- 239000000498 cooling water Substances 0.000 claims description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 9
- 230000004907 flux Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 101001078093 Homo sapiens Reticulocalbin-1 Proteins 0.000 description 2
- 102100025335 Reticulocalbin-1 Human genes 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- 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
- G01K17/20—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 across a radiating surface, combined with ascertainment of the heat transmission coefficient
Description
【発明の詳細な説明】
本発明は、同時に長さ方向と円周方向における
多点の熱流束の計測が可能で長期間にわたつて安
定した連続測定が可能な管形多点熱流計に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tubular multi-point heat flowmeter that is capable of simultaneously measuring heat flux at multiple points in the longitudinal direction and circumferential direction and capable of stable continuous measurement over a long period of time.
従来、ボイラチユーブの過熱障害を防止し、ま
た精度の良い寿命予測を行うためには、当該個所
の熱負荷、メタル温度を知る必要があつた。これ
らボイラチユーブのうち、火炉水壁管、過熱器管
および再熱器管については、熱負荷あるいは管内
流体条件が厳しく、運転信頼性を確保する上で重
要な対象となつている。 Conventionally, in order to prevent boiler tube overheating failures and accurately predict the service life of boiler tubes, it was necessary to know the heat load and metal temperature at the relevant locations. Among these boiler tubes, the furnace water wall tubes, superheater tubes, and reheater tubes have severe thermal loads or fluid conditions within the tubes, making them important targets for ensuring operational reliability.
このうち、火炉水壁管については、すでに良好
な精度と耐久性を有する溝切り方式温度計（特許
第1065907号）が提案され、実用に供されている
が、過熱器管および再熱器管については、一般に
火炉周壁を構成する水壁管と異なり、煙道内に設
置されることから、熱電温度計による場合、施工
上、および材料強度上の難点もあつて、精度、耐
久性および施工性などの具備すべき諸条件を満し
た測定方式は見出し難い状況にある。過熱障害防
止のためには、上述したようにメタル温度、ある
いは熱負荷のいづれかを正確に知る必要があり、
例えば、特願昭48−143962に示される管外面溶接
タイプのメタル温度計では、取付管への加工を必
要とせず現地加工である利点を有しているが、施
工性および測定精度に若干の難点があつた。 Among these, for water wall tubes in furnaces, a grooved thermometer (Patent No. 1065907) with good accuracy and durability has already been proposed and put into practical use, but superheater tubes and reheater tubes Unlike water wall pipes that generally make up the furnace surrounding wall, thermocouples are installed in the flue, so using thermocouple thermometers has drawbacks in terms of construction and material strength, making it difficult to maintain accuracy, durability, and workability. It is difficult to find a measurement method that satisfies the following conditions. In order to prevent overheating failures, as mentioned above, it is necessary to accurately know either the metal temperature or the heat load.
For example, the tube outer surface welded metal thermometer shown in Japanese Patent Application No. 143962 has the advantage of being machined on-site without requiring any processing on the mounting tube, but there are some problems with workability and measurement accuracy. There was a problem.
又、最近では環境保全性の面から窒素酸化物を
極力抑性するための各種対策が実施されており、
この一方策として二段燃焼法が多数のボイラで採
用されている。しかし、本方法では、ボイラ火炉
上部に燃焼領域が拡張されることとなるため、場
合によつては、火炉出口部近傍に設置されている
過熱器管、又は、再熱器管への接触伝熱に起因し
た局所的過熱の懸念が生ずる。従つて、この接触
伝熱の程度を把握することは、従来に増して過熱
障害の未然防止のためには重要であり、加えて、
今後のボイラ設計に対して必要な指針を与えるこ
ととなる。 In addition, recently, various measures have been implemented to suppress nitrogen oxides as much as possible from the perspective of environmental conservation.
As one solution to this problem, a two-stage combustion method is adopted in many boilers. However, in this method, the combustion area is expanded to the upper part of the boiler furnace, so in some cases, contact transmission to the superheater tube or reheater tube installed near the furnace outlet may be affected. Concerns arise about thermally induced localized overheating. Therefore, it is more important than ever to understand the degree of contact heat transfer in order to prevent overheating problems.
This will provide necessary guidelines for future boiler design.
本発明に係る管形熱流計は、上記したように、
現状では具備すべき諸条件を充したメタル温度測
定方式が見当らないこと、並びに通常の輻射およ
び対流伝熱のほかに接触伝熱による影響の程度を
把握すると共に、測定個所近傍の過熱器管、また
は再熱器管のメタル温度を推定し、ボイラ運用、
保守指針の策定ならびにボイラ設計への反映を図
らんとするものであつて、本発明に係る管型熱流
計は、近似的に伝熱体系を軸対称系とした次式(1)
により熱流束を算定するものである。すなわち
ｑ＝λ／γ1lnγ1−△δ／γ2−△δ（θ1−θ2）…
…(1)
(1)式において、ｑは熱流束（単位：Rcal／m2・
ｈ）、λは外管材の熱伝導率（単位：Rcal／ｍ・
ｈ・℃）であり、θ1＋θ2／２に対応する値、γ1は
外管の外半径（位：ｍ）、γ2は外管の内半径（単
位：ｍ）、△δは外管の外・内側面より感温部中
心までの埋設深さ（単位：ｍ）、θ1は外管外側面
に埋設した感温部の温度指示値（単位：℃）、θ2
は外管内側面に埋設した感温部の温度指示値（単
位：℃）である。 As described above, the tubular heat flow meter according to the present invention has the following features:
Currently, there is no metal temperature measurement method that satisfies the various conditions that should be met, and in addition to understanding the extent of the influence of contact heat transfer in addition to normal radiation and convection heat transfer, it is necessary to Or estimate the metal temperature of the reheater tube and improve boiler operation.
The tubular heat flow meter according to the present invention is intended to be reflected in the formulation of maintenance guidelines and boiler design, and the following equation (1) where the heat transfer system is approximated as an axially symmetric system is used.
The heat flux is calculated by That is, q=λ/γ 1 lnγ 1 −△δ/γ 2 −△δ(θ 1 −θ 2 )…
…(1) In equation (1), q is the heat flux (unit: Rcal/m 2
h), λ is the thermal conductivity of the outer tube material (unit: Rcal/m・
h・℃), the value corresponding to θ 1 + θ 2 /2, γ 1 is the outer radius of the outer tube (unit: m), γ 2 is the inner radius of the outer tube (unit: m), △δ is the outer radius The burial depth from the outer/inner surface of the tube to the center of the temperature sensing part (unit: m), θ 1 is the temperature reading of the temperature sensing part buried on the outer surface of the outer tube (unit: °C), θ 2
is the temperature indication value (unit: °C) of the temperature sensing part embedded in the inner surface of the outer tube.
以下、本発明に係る管形熱流計を図示した実施
例に基づきその詳細を説明するに、第１図は本発
明の実施例を示す断面図であつて、本発明に係る
管形熱流計１は、基端側に短管を側設することで
冷却水入口２を設け、先端側を有蓋状態となした
ボイラチユーブと類似あるいは同一の素材からな
る外管３内に両端開口状の内管１７を、先端側が
前記外管３の内部先端に開口し、基端が前記外管
３の基端から突出させるとともに支持体４を外管
３との間に介在させ、且輪状蓋体５で水密的に封
止、固定してなる熱流計管本体の前記外管３にお
ける長さ方向（第１図参）と、円周方向（第２図
参）の管壁外面６に複数のシース型熱電対の感温
部７を相互に所要間隔をあけて埋設するととも
に、前記感温部７に対向する管壁内面８にも複数
のシース型熱電対の感温部７を埋設し且リード線
９を前記外管３内部に導設し、外管基端部より外
部に引出してなる構成に係る。 Hereinafter, the details of the tubular heat flow meter according to the present invention will be explained based on an illustrated embodiment. FIG. The cooling water inlet 2 is provided by installing a short tube on the base end side, and an inner tube with both ends open inside an outer tube 3 made of similar or the same material as a boiler tube with a covered tip side. 17, the distal end thereof is open at the inner end of the outer tube 3, the proximal end is made to protrude from the proximal end of the outer tube 3, and the support body 4 is interposed between the outer tube 3 and the annular lid body 5. A plurality of sheath molds are formed on the outer surface 6 of the tube wall in the length direction (see Figure 1) and the circumferential direction (see Figure 2) of the outer tube 3 of the heat flow meter tube body which is sealed and fixed in a watertight manner. The temperature-sensing parts 7 of thermocouples are buried at a required distance from each other, and a plurality of temperature-sensing parts 7 of sheathed thermocouples are also buried in the inner surface 8 of the tube wall facing the temperature-sensing parts 7, and lead wires are provided. 9 is introduced into the inside of the outer tube 3 and drawn out from the proximal end of the outer tube.
こゝに感温部７の位置を本熱流計１の如く、長
さ方向と円周方向に設ける為には、外管３を複数
の単位短管に区分し、例えば、一つ置きの短管を
二つの半割状のリング体にし、これを対向配置す
ることによつて構成し、各半割短管１０の外面と
外面対向位置の内面に複数個の溝１１を円周方向
の所要間隔に形成するとともに、外面の溝１１よ
り内面側へリード線挿入用の貫通孔１２を設け、
内外面の溝１２，１２には感温部７を配し、外部
から押圧内装してカバー等で封止１３した後（第
３図参）、外面の感温部につづくリード線９を、
貫通孔１２を通じて管内に挿入した後、半割の短
管１０，１０を合せ、溶着して一体のリングを構
成して、長さ方向と円周方向にシース型熱電対の
感温部７…を配してなる。 In order to position the temperature sensing part 7 in the longitudinal direction and the circumferential direction as in the present heat flow meter 1, the outer tube 3 is divided into a plurality of unit short tubes, and for example, every other short tube is It is constructed by forming a tube into two half-shaped ring bodies and arranging them facing each other, and a plurality of grooves 11 are formed on the outer surface of each half-short tube 10 and on the inner surface at a position facing the outer surface as required in the circumferential direction. At the same time, a through hole 12 for inserting a lead wire is provided on the inner side from the groove 11 on the outer surface,
The temperature sensing portion 7 is arranged in the grooves 12, 12 on the inner and outer surfaces, and after being pressed inside from the outside and sealed 13 with a cover etc. (see Figure 3), the lead wire 9 continuing to the temperature sensing portion on the outer surface is connected.
After being inserted into the tube through the through hole 12, the short tube halves 10, 10 are combined and welded to form an integral ring, and the temperature sensing portion 7 of the sheathed thermocouple is inserted in the length direction and circumferential direction. It will be arranged.
以上のような本管形多点熱流計１は、更に以下
に説明するような、詳細構造に基づく装置の製造
手順例により構成内容が理解される。 The structure of the main pipe type multi-point heat flow meter 1 as described above can be further understood by referring to an example of the manufacturing procedure of the device based on the detailed structure as described below.
即ち、第１図に示した本熱流計１は、
有蓋管体片１４の開放端に、管壁の外面６と外
面対向位置の内面８に溝１１を、円周方向の所要
間隔に形成するとともに、該溝より内面８側へリ
ード線９挿入用の貫通孔１２を設けた前記管体片
１４と同径、同肉厚の一対の半割短管１０，１０
の前記溝１１にシース型熱電対感温部７を配し、
外部から押圧装着して封止１３した後、外面６の
溝１１に設けたシース型熱電対のリード線９を貫
通孔１２を経て管内へ挿入してなる一対の半割短
管１０，１０を、それぞれ前記有蓋管体片１４の
開放端に溶着１５して、リング体を構成し、且つ
一対の半割短管１０，１０の対向面を溶着するか
又は一対の半割短管１０，１０の対向面を溶着１
６，１６したリング体を前記有蓋管体片１４の開
放端に溶着し、次いで、両端開口状で前記管体片
１４の内部に冷却水の流れ抵抗が小さい支持体４
を一定間隔で外設した内管１７を、その先端側が
前記有蓋管体片１４の内部に開口するようにして
装入設置し、有蓋管体片１４と同径、同肉厚の短
管１８を前記固着した一対の半割短管１０，１０
の端部に溶着し、各シース型熱電対のリード線９
を内管１７外面に結束帯等で添設固定するととも
に、前記一対の半割短管１０と短管１８を適当数
交互に連着し、基端部においては、一側に冷却水
入口２を有し、他側にリード線を水密的に引出し
うる取出金具１９、例えば、短管内にリード線９
を通し、シーラントの如き封止材で水封したもの
を取付けた基端管体片２０を前記延設された管体
縁に溶着し、リード線９を取出金具１９から引出
し、管基端を輪状蓋体５で内管１７基端が基端管
体片２０から突出するように、水密的に封止固定
してなることにより本管形熱流計１は製造され
る。 That is, in the heat flow meter 1 shown in FIG. 1, grooves 11 are formed at required intervals in the circumferential direction on the open end of the covered tube piece 14, on the inner surface 8 of the tube wall at a position opposite to the outer surface 6 of the tube wall. At the same time, a pair of half-split short tubes 10, 10 having the same diameter and the same wall thickness as the tube piece 14 are provided with a through hole 12 for inserting the lead wire 9 from the groove to the inner surface 8 side.
A sheath type thermocouple temperature sensing part 7 is arranged in the groove 11,
After being press-fitted from the outside and sealed 13, the lead wire 9 of the sheathed thermocouple provided in the groove 11 of the outer surface 6 is inserted into the tube through the through hole 12 to form a pair of half-split short tubes 10, 10. , respectively, to form a ring body by welding 15 to the open end of the covered tube piece 14, and by welding the opposing surfaces of the pair of halved short tubes 10, 10, or by welding the opposing surfaces of the pair of halved short tubes 10, 10. Weld the opposite surfaces of 1
The ring body 6,16 is welded to the open end of the covered tube piece 14, and then a support 4 with open ends and low flow resistance of cooling water is installed inside the tube piece 14.
The inner tubes 17, which are externally installed at regular intervals, are inserted and installed so that their distal ends open inside the covered tube piece 14, and the short tubes 18 having the same diameter and the same wall thickness as the covered tube piece 14 are inserted. A pair of halved short tubes 10, 10 fixed together.
Weld the lead wire 9 of each sheathed thermocouple to the end of
At the same time, the pair of half-split short tubes 10 and short tubes 18 are connected alternately in appropriate numbers to the outer surface of the inner tube 17, and a cooling water inlet 2 is provided on one side at the base end. and has a lead wire 9 in a short pipe, for example, a lead wire 9 in a short pipe.
The proximal tube piece 20, which has been sealed with a sealant such as a sealant, is welded to the extended tube edge, the lead wire 9 is pulled out from the extraction fitting 19, and the proximal end of the tube is removed. The main tube type heat flow meter 1 is manufactured by sealing and fixing the inner tube 17 in a watertight manner so that the proximal end of the inner tube 17 protrudes from the proximal end tube piece 20 with the annular lid body 5 .
なお、各短管１０，１４，２０の連接構造は図
例の対接方式以外に、例えば、長さ方向に嵌合可
能な段部を形成することも可能である。 In addition to the connecting structure of the short pipes 10, 14, 20 shown in the drawings, it is also possible to form a stepped portion that can be fitted in the length direction, for example.
しかして、該熱流計を該当場所、例えば過熱器
管、再加熱器管等の近傍へ挿設して、冷却水を入
口から流入させ、内管先端から案内して内管基端
から流出させることにより管内を冷却するととも
に、各感温部における温度を測定することによ
り、管体各部の熱流束を求めることができ、従来
の各種熱流計に比し、本発明のものでは、
同時に長さ方向と円周方向における多点の熱
流束の計測が可能であり、
冷却水流路を形成し、この冷却作用により、
高温雰囲気下における装置の劣化を防止し、長
期間にわたる安定した連続測定が可能となり、
装置構成がボイラ燃焼室のボイラチユーブと
素材、及び形状的に近似し、ボイラチユーブへ
の熱負荷をほぼ同一条件で計測でき、
可搬型で必要に応じ校正することが容易であ
り、
又熱流計の値を過熱器管、再加熱器管等に適
用する場合は、前記熱流計と適用対象管のガス
−内部流体温度の間の熱通過率（熱貫流率）の
相違を補正し、適用対象管の熱流束の測定精度
を高めることができるものである。 Then, the heat flow meter is inserted into the relevant location, for example, near the superheater tube, reheater tube, etc., and the cooling water is introduced from the inlet, guided from the tip of the inner tube, and flows out from the proximal end of the inner tube. By cooling the inside of the tube, and by measuring the temperature at each temperature-sensing part, the heat flux of each part of the tube can be determined. It is possible to measure heat flux at multiple points in the direction and circumferential direction, and a cooling water flow path is formed, and due to this cooling action,
It prevents equipment deterioration in high-temperature atmospheres and enables stable continuous measurement over long periods of time.The equipment configuration is similar in material and shape to the boiler tube of the boiler combustion chamber, and the heat load on the boiler tube is almost the same. It is portable and easy to calibrate as needed, and when applying the heat flow meter values to superheater tubes, reheater tubes, etc. It is possible to correct the difference in heat transmission coefficient between internal fluid temperatures and improve the measurement accuracy of the heat flux of the pipe to which it is applied.
といつた作用効果を提起しうるうえに、短管を連
接することにより外管を構成し、しかもこの短管
のうちで、感温部取付用のものは２分割したリン
グ状の短管を用いているから、内外面の各溝の形
成は分割短管を単位に考慮すればよく、その製造
が容易なうえに装置全体の組立も簡易化される。In addition to providing such effects, the outer tube is constructed by connecting short tubes, and among these short tubes, the one for attaching the temperature sensing part is a ring-shaped short tube divided into two. Since the grooves on the inner and outer surfaces can be formed by considering each divided short tube as a unit, manufacturing thereof is easy, and assembly of the entire device is also simplified.
又、本装置は、外部に外管と、内部に内管を配
し、内外管は支持体並びに輪状蓋体で連設してな
ることから、全体の支持強度は大であり、装置の
耐久性には前記水冷と相まつて貢献するものであ
る。 In addition, this device has an outer tube on the outside and an inner tube on the inside, and the inner and outer tubes are connected by a support and a ring-shaped lid, so the overall support strength is high and the durability of the device is high. This, together with the water cooling mentioned above, contributes to the performance.
第１図は本発明の実施例断面図、第２図は第１
図のＡ−Ａ拡大断面図、第３図イ，ロは第２図の
Ｂ部拡大断面図であつて、イはシース熱電対を偏
平加工した場合、ロは半円形加工した場合を示
し、第４図は第１図のＣ−Ｃの拡大断面図であ
る。
１……熱流計、２……冷却水入口、３……外
管、４……リング状支持体、５……輪状蓋体、６
……管壁外面、７……感温部、８……管壁内面、
９……リード線、１０……半割短管、１１……
溝、１２……貫通孔、１３……封止、１４……有
蓋管体片、１５……溶着、１６……溶着、１７…
…内管、１８……管体片、１９……取出金具、２
０……基端管体片。
FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of an embodiment of the present invention.
3A and 3B are enlarged cross-sectional views of the B part in FIG. FIG. 4 is an enlarged sectional view taken along line CC in FIG. 1. DESCRIPTION OF SYMBOLS 1... Heat flow meter, 2... Cooling water inlet, 3... Outer tube, 4... Ring-shaped support, 5... Ring-shaped lid, 6
...Outer surface of the tube wall, 7...Temperature sensing part, 8...Inner surface of the tube wall,
9...Lead wire, 10...Half-split short tube, 11...
Groove, 12... Through hole, 13... Sealing, 14... Covered tube piece, 15... Welding, 16... Welding, 17...
...Inner tube, 18...Pipe body piece, 19...Ejection fitting, 2
0... Proximal tube body piece.
Claims (1)
管本体の前記外管の長さ方向と円周方向における
管壁外面に、複数のシース型熱電対の感温部所要
長を相互に任意間隔あけて埋設すると共に、前記
感温部に対向する管壁内面に、複数のシース型熱
電対の感温部所要長を埋設してなる管形多点熱流
計。 ２ 冷却水が循環する外管と内管とからなる二重
管本体の前記外管を、複数の短管を連設すること
により形成するとともに、一つおきの短管の円周
方向における管壁外面に、複数のシース型熱電対
の感温部所要長を相互に任意間隔あけて埋設し、
該管壁外面の感温部に対向する管壁内面に複数の
シース型熱電対の感温部所要長を埋設してなる管
形多点熱流計。 ３ シース型熱電対の感温部を埋設する短管とし
て、該短管を軸方向に半割りにしたものを、２個
対向して連設してなるものを利用してなる特許請
求の範囲第２項記載の管形多点熱流計。[Claims] 1. A double tube main body consisting of an outer tube and an inner tube through which cooling water circulates, with a plurality of sheathed thermocouples on the outer surface of the tube wall in the longitudinal direction and circumferential direction of the outer tube. A tubular multi-point heat flow meter comprising a plurality of sheathed thermocouples whose required lengths are buried at an arbitrary distance from each other, and the required lengths of the temperature sensing portions of a plurality of sheathed thermocouples are buried in the inner surface of the tube wall facing the temperature sensing portion. . 2. The outer tube of the double tube body consisting of an outer tube and an inner tube through which cooling water circulates is formed by connecting a plurality of short tubes, and the tubes in the circumferential direction of every other short tube are formed by connecting a plurality of short tubes. The temperature-sensing parts of multiple sheathed thermocouples are buried at arbitrary intervals on the outer surface of the wall.
A tubular multi-point heat flow meter comprising a plurality of sheathed thermocouples with required lengths of temperature-sensing parts embedded in the inner surface of the tube wall opposite to the temperature-sensing part on the outer surface of the tube wall. 3 Claims that utilize a short tube in which the temperature-sensing part of a sheathed thermocouple is embedded by using two short tubes cut in half in the axial direction and arranged in series to face each other. The tubular multi-point heat flow meter according to item 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57126595A JPS5915829A (en) | 1982-07-19 | 1982-07-19 | Tubular multipoint heat flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57126595A JPS5915829A (en) | 1982-07-19 | 1982-07-19 | Tubular multipoint heat flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5915829A JPS5915829A (en) | 1984-01-26 |
| JPS6321129B2 true JPS6321129B2 (en) | 1988-05-02 |
Family
ID=14939070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57126595A Granted JPS5915829A (en) | 1982-07-19 | 1982-07-19 | Tubular multipoint heat flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5915829A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2813956B1 (en) * | 2000-09-11 | 2002-11-15 | Thermoblux Sa | DEVICE FOR MEASURING EXCHANGES OF QUANTITIES OF HEAT IN NON-STATIONARY CONDITIONS |
| KR100456093B1 (en) * | 2002-04-19 | 2004-11-08 | 국방과학연구소 | Heat-flux gage and manufacturong method thereof |
| FR2996914B1 (en) * | 2012-10-17 | 2014-12-19 | Commissariat Energie Atomique | TEMPERATURE DETECTION DEVICE FORMING THERMOMETRIC ROD, APPLICATION TO THE ELECTRICAL SIMULATION OF NUCLEAR FUEL PENCILS. |
| JP6253502B2 (en) * | 2014-05-09 | 2017-12-27 | 株式会社フルヤ金属 | Multi-point thermocouple |
| CN109871052A (en) * | 2019-04-03 | 2019-06-11 | 上海颐柏科技股份有限公司 | A kind of electrothermal radiation tube temperature control equipment and its control method |
| CN109947152A (en) * | 2019-04-03 | 2019-06-28 | 上海颐柏科技股份有限公司 | A kind of gas fired radiant tubes temperature control system and its control method |
-
1982
- 1982-07-19 JP JP57126595A patent/JPS5915829A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5915829A (en) | 1984-01-26 |
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