JPH0628669U - Mounting structure of heat transfer tube temperature detector in thermal equipment - Google Patents
Mounting structure of heat transfer tube temperature detector in thermal equipmentInfo
- Publication number
- JPH0628669U JPH0628669U JP7216892U JP7216892U JPH0628669U JP H0628669 U JPH0628669 U JP H0628669U JP 7216892 U JP7216892 U JP 7216892U JP 7216892 U JP7216892 U JP 7216892U JP H0628669 U JPH0628669 U JP H0628669U
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- transfer tube
- temperature
- mounting
- combustion
- 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.)
- Granted
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
(57)【要約】
【目的】 ボイラ等の熱機器における伝熱管の温度測定
を確実に行うことができ、加工，取付けが容易で、か
つ、確実であり、しかも伝熱管としての充分な強度を保
持することができ、更にメンテナンス性の向上を図った
熱機器における伝熱管温度検出器の取付構造を提供する
こと。
【構成】 熱機器の伝熱領域に位置する伝熱管(1) の周
面に、先端部を前記加熱側領域Ａ内の管壁温度測定箇所
まで延在させ、かつ基端部を非加熱側領域Ｂ内に露出さ
せるべく配した実質上弓形をなす取付台座(30)と、該取
付台座(30)内に緊密に挿入設置した測温センサ(3) とか
らなり、上記取付台座(30)は、上記伝熱管(1) の外周面
と接する取付面に、その長手方向の基端側から先端側に
向けて、且つ、この取付面の先端側一部を残して形成し
た溝部(31)を有し、この溝部(31)の終端部(32)を順次縮
寸する形状とした取付構造。
(57) [Abstract] [Purpose] It is possible to reliably measure the temperature of the heat transfer tube in a thermal device such as a boiler, and it is easy to process and install, and it has a sufficient strength as a heat transfer tube. (EN) Provided is a structure for mounting a heat transfer tube temperature detector in a thermal device which can be held and whose maintainability is improved. [Structure] On the peripheral surface of the heat transfer tube (1) located in the heat transfer area of the thermal equipment, the tip end is extended to the tube wall temperature measurement point in the heating side area A, and the base end is not heated. The mounting base (30) has a substantially bow-shaped mounting base (30) arranged to be exposed in the region B, and a temperature measuring sensor (3) tightly inserted and installed in the mounting base (30). Is a groove (31) formed on the mounting surface in contact with the outer peripheral surface of the heat transfer tube (1) from the base end side in the longitudinal direction toward the tip side and leaving a part of the tip side of the mounting surface. And a mounting structure in which the end portion (32) of the groove portion (31) is successively reduced in size.
Description
【０００１】[0001]
この考案は、ボイラ等の熱機器における伝熱管温度を検出する温度検出器の取 付構造に関するものである。 The present invention relates to a temperature detector mounting structure for detecting the temperature of a heat transfer tube in a thermal device such as a boiler.
【０００２】[0002]
従来より、ボイラ、熱交換器等の伝熱管の過熱防止，温度制御あるいは伝熱管 内のスケール付着の検出等を目的として、伝熱管に熱電対，サーミスタ等の測温 センサを取り付け、これにより伝熱管の温度を検出する方法が採用され、種々の 取付構造が提案されている。 Conventionally, a temperature measuring sensor such as a thermocouple or thermistor is attached to the heat transfer tube for the purpose of preventing overheating of the heat transfer tube of the boiler, heat exchanger, etc., temperature control, or detecting scale adhesion in the heat transfer tube. A method of detecting the temperature of the heat tube is adopted, and various mounting structures have been proposed.
【０００３】 この様な測温センサの取付方法としては、図８に示す如く、伝熱管(1) の肉厚 内に非加熱側領域Ｂから有底孔(2) を穿設し、この有底孔(2) 内に測温センサ(3 ) を嵌挿する方法、即ち、伝熱管直接取付方法が行われている。 しかし、このような伝熱管直接取付方法においては、測温センサ(3) の嵌挿部 ，即ち伝熱管(1) の肉厚部が曲面をなしているため、測温センサ(3) を嵌挿する ための有底孔(2) を穿設するには高度な技術を必要とすることはもちろん、非加 熱側領域Ｂから穿設する有底孔(2) の深さには限度があり、測温箇所を自由に選 定することができないと云う問題があり、特に、加圧容器であるボイラーの伝熱 管に有底孔(2) を穿設しているため、伝熱管の肉厚が局部的に薄くなり、その強 度が低下すると共に、腐食等により破損をきたす危険が大であると云った問題も あった。As a method of mounting such a temperature measuring sensor, as shown in FIG. 8, a bottomed hole (2) is bored from the non-heating side region B in the wall thickness of the heat transfer tube (1), and The method of inserting the temperature measuring sensor (3) into the bottom hole (2), that is, the method of directly attaching the heat transfer tube is used. However, in such a direct mounting method for the heat transfer tube, the fitting portion of the temperature measurement sensor (3), that is, the thick part of the heat transfer tube (1) has a curved surface, so the temperature measurement sensor (3) is fitted. Drilling the bottomed hole (2) for insertion requires not only high technology, but also the depth of the bottomed hole (2) drilled from the non-heating side region B is limited. There is a problem that it is not possible to freely select the temperature measurement location.In particular, since the bottomed hole (2) is bored in the heat transfer tube of the boiler, which is a pressurized container, There was also a problem that the wall thickness became locally thin and its strength decreased, and there was a great risk of damage due to corrosion and the like.
【０００４】[0004]
この考案は、前記問題点に鑑みてなされたもので、伝熱管の温度測定を確実に 行うことができ、加工，取付けが容易で、かつ、確実であり、しかも加圧容器で あるボイラにおける伝熱管として充分な強度を保持することができるようにした ものであり、更にメンテナンス性の向上を図るようにしたものである。 The present invention has been made in view of the above-mentioned problems, and can reliably measure the temperature of the heat transfer tube, is easy to process and install, and is reliable, and moreover, it is used in a boiler as a pressurized container. It is designed to maintain sufficient strength as a heat tube, and to improve maintainability.
【０００５】[0005]
この考案は、上記課題を解決するためになされたもので、熱機器の伝熱領域に 位置する伝熱管の温度を検出するための温度検出器において、上記伝熱管の周面 に、先端部を前記加熱側領域Ａ内の管壁温度測定箇所まで延在させ、かつ基端部 を非加熱側領域Ｂ内に露出させるべく配した実質上弓形をなす取付台座と、該取 付台座内に緊密に挿入設置した測温センサとからなり、上記取付台座は、上記伝 熱管の外周面と接する取付面に、その長手方向の基端側から先端側に向けて、且 つ、この取付面の先端側一部を残して形成した溝部を有し、この溝部の終端部を 順次縮寸する形状としたことを特徴とする熱機器における伝熱管温度検出器の取 付構造を特徴としている。 The present invention has been made to solve the above problems, and in a temperature detector for detecting the temperature of a heat transfer tube located in a heat transfer area of a heat device, a tip portion is provided on the peripheral surface of the heat transfer tube. A substantially arcuate mounting pedestal that extends to the pipe wall temperature measurement point in the heating side area A and has a base end portion exposed in the non-heating side area B, and a tight fitting in the mounting pedestal. The temperature sensor is inserted into the heat transfer tube, and the mounting pedestal is attached to the mounting surface in contact with the outer peripheral surface of the heat transfer tube from the base end side in the longitudinal direction toward the tip side, and the tip of this mounting surface. It features a mounting structure for a heat transfer tube temperature detector in a thermal device, which has a groove part formed by leaving a part of the side and the end part of this groove part is successively reduced in size.
【０００６】[0006]
この考案によれば、測温センサーの取付台座に形成した溝部の終端部を徐々に 縮寸した形状にしたことにより、測温センサーを伝熱管の外表面に対して密着状 態で取付けることができ、また、この測温センサーの取付に際して、取付台座の センサー取付部に挿入するだけで、センサー先端の測温部を伝熱管に密着させる ことができて精度に優れ、この結果、伝熱管の温度検出を正確に行うことができ る。 According to this invention, the temperature measuring sensor can be mounted in close contact with the outer surface of the heat transfer tube by gradually reducing the size of the end of the groove formed on the mounting base of the temperature measuring sensor. Also, when mounting this temperature sensor, the temperature measuring part at the tip of the sensor can be brought into close contact with the heat transfer tube by simply inserting it into the sensor mounting part of the mounting base, resulting in excellent accuracy. The temperature can be detected accurately.
【０００７】[0007]
以下、この考案に係る熱機器における伝熱管温度検出器の取付構造の具体的実 施例を図面に基づいて詳細に説明する。 この考案は、熱機器の伝熱管の配置構造によってその取付け要領の差異が生じ るが、図１〜３に示す第１実施例では、従来からある円筒形状の缶体構造を有す るボイラ、図４〜７に示す第２実施例では、近年開発された所謂角型形状の缶体 構造を有するボイラに適用した場合について説明する。 Hereinafter, a specific embodiment of the mounting structure of the heat transfer tube temperature detector in the thermal equipment according to the present invention will be described in detail with reference to the drawings. In this invention, the mounting procedure differs depending on the arrangement structure of the heat transfer tubes of the heat equipment, but in the first embodiment shown in FIGS. 1 to 3, the conventional boiler having a cylindrical can body structure, The second embodiment shown in FIGS. 4 to 7 will be described as applied to a boiler having a so-called square-shaped can body structure that has been developed in recent years.
【０００８】 図１〜３において、円筒形状の缶体(10)は、周知のように環状に形成した上部 管寄せ(11)及び下部管寄せ(12)を多数の垂直伝熱管で連結することにより、これ ら垂直伝熱管を半径方向に間隔をおいた内外２個の環状伝熱管列(13),(14) とし て配列し、該内外両環状伝熱管列(13),(14) の各垂直伝熱管をそれぞれ内側スペ ーサ(15)および外側スペーサ(16)によって連結し、前記内側環状伝熱管列(13)と 前記外側環状伝熱管列(14)との間に燃焼ガス通路(17)を形成し、前記内側環状伝 熱管列(13)に垂直伝熱管の全長に亘る第１開口部(18)を設けて燃焼室(19)と前記 燃焼ガス通路(17)とを連通させ、前記外側環状伝熱管列(14)に垂直伝熱管の全長 に亘る第２開口部(20)を設けて前記燃焼ガス通路(17)と煙道(21)とを連通させた 構造となっている。Referring to FIGS. 1 to 3, a cylindrical can body (10) is formed by connecting a plurality of vertical heat transfer tubes to an upper pipe header (11) and a lower pipe header (12) which are annularly formed as is well known. Therefore, these vertical heat transfer tubes are arranged as two inner and outer annular heat transfer tube rows (13) and (14) with radial intervals, and the inner and outer annular heat transfer tube rows (13) and (14) are The vertical heat transfer tubes are connected by an inner spacer (15) and an outer spacer (16), respectively, and a combustion gas passage (a) is provided between the inner annular heat transfer tube row (13) and the outer annular heat transfer tube row (14). 17) is formed, and a first opening (18) is provided in the inner annular heat transfer tube row (13) over the entire length of the vertical heat transfer tube to connect the combustion chamber (19) and the combustion gas passage (17). The outer annular heat transfer tube row (14) is provided with a second opening (20) extending over the entire length of the vertical heat transfer tube so that the combustion gas passage (17) and the flue (21) communicate with each other. There is.
【０００９】 外側環状伝熱管列(14)を形成している垂直伝熱管の温度を測定する熱電対ある いはサーミスタ等からなる測温センサ(3) の保護部材あるいは保持部材としての 機能を有する取付台座(30)は、前記外側スペーサ(16)を貫通して加熱側領域，即 ち燃焼ガス通路(17)内から非加熱側領域，即ち水冷壁である外側環状伝熱管列(1 4)（外側スペーサ(16)）の外側に亘って設けられている。It has a function as a protective member or a holding member for a temperature measuring sensor (3) including a thermocouple or a thermistor for measuring the temperature of the vertical heat transfer tubes forming the outer annular heat transfer tube row (14). The mounting pedestal (30) penetrates the outer spacer (16) to a heating side region, that is, from the inside of the combustion gas passage (17) to a non-heating side region, that is, an outer annular heat transfer tube row (14) which is a water cooling wall. It is provided over the outside of the (outer spacer (16)).
【００１０】 この取付台座(30)の先端部(33)は、燃焼ガス通路(17)内において、外側環状伝 熱管列(14)を形成している外側伝熱管の表面における管壁温度の測定箇所（符号 省略）まで延在している。この先端部(33)が延在する管壁温度の測定箇所として は、外側伝熱管の管壁温度の測定に当たって、外側伝熱管の管壁温度を効率的， かつ確実に測定するために、燃焼ガス通路(17)内において外側伝熱管の熱交換が 最も多く行われ、伝熱量が多く外側伝熱管の管壁温度が高温となる部分であり、 具体的には燃焼ガス通路(17)内において、外側伝熱管の両側の外側スペーサ(16) を結ぶ線を底辺とした場合の外側伝熱管の頂点近傍位置が効果的である。The tip portion (33) of the mounting pedestal (30) measures the tube wall temperature on the surface of the outer heat transfer tube forming the outer annular heat transfer tube row (14) in the combustion gas passage (17). It extends to the point (the reference number is omitted). The measurement point of the tube wall temperature where the tip (33) extends is the combustion temperature in order to measure the tube wall temperature of the outer heat transfer tube efficiently and surely when measuring the tube wall temperature of the outer heat transfer tube. In the gas passage (17), heat is most exchanged in the outer heat transfer tube, and the amount of heat transfer is large, so that the wall temperature of the outer heat transfer tube becomes high. Specifically, in the combustion gas passage (17) The position near the apex of the outer heat transfer tube is effective when the bottom side is the line connecting the outer spacers (16) on both sides of the outer heat transfer tube.
【００１１】 また、取付台座(30)の基端部(34)は、先端部(33)から外側伝熱管の表面に沿っ た状態で延伸し、非加熱側領域である外側スペーサ(16)の外側に露出している。 従って、取付台座(30)は、その先端部(33)から基端部(34)に至る長さが比較的短 小で、外側伝熱管の表面の曲面に対応して実質上弓形をなしている。Further, the base end portion (34) of the mounting pedestal (30) extends from the tip end portion (33) along the surface of the outer heat transfer tube, and the base end portion (34) of the outer spacer (16) which is a non-heating side region. It is exposed to the outside. Therefore, the mounting pedestal (30) has a relatively short length from the distal end (33) to the proximal end (34), and has a substantially arcuate shape corresponding to the curved surface of the outer heat transfer tube. There is.
【００１２】 そして、取付台座(30)には、図３(A)(B)(C) に示すように、上記伝熱管(1) の 外周面への取付面に長手方向の一部を残して溝部(31)を形成してある。この溝部 (31)は、取付面の取付台座基端部(34)側に隣接する端面から、対向する端面（取 付台座先端部(33)側）に向けて形成されており、この取付面の取付台座先端部(3 3)側は、この側の端面に所定距離を残して位置をこの溝部(31)の形成終端部(32) とし、終端部(32)近傍での溝部(31)の寸法は順次、浅くなるように設定してある 。即ち、この溝部(31)は、上記取付台座(30)の長手方向一端から他端に向けて前 記測温センサ(3) を収容しうる寸法（深さ及び幅）にて形成し、この溝部(31)の 終端部(32)近傍においては、上記測温センサ(3) が緊密に収容される寸法にまで 徐々に縮寸した形状としてある。Then, as shown in FIGS. 3 (A), (B), and (C), the mounting pedestal (30) leaves a part in the longitudinal direction on the mounting surface to the outer peripheral surface of the heat transfer tube (1). To form a groove (31). The groove (31) is formed from the end surface of the mounting surface adjacent to the base end (34) side of the mounting base toward the opposite end surface (the side of the front end (33) of the mounting base). On the side of the tip (33) of the mounting pedestal, the position is defined as the end point (32) where this groove (31) is formed, leaving a certain distance on the end face on this side, and the groove (31) near the end (32) The dimensions of are set to become shallower in sequence. That is, the groove portion (31) is formed with a size (depth and width) capable of accommodating the temperature measuring sensor (3) from one end to the other end in the longitudinal direction of the mounting base (30). In the vicinity of the terminal end portion (32) of the groove portion (31), the temperature measuring sensor (3) is gradually reduced to a size in which it can be tightly accommodated.
【００１３】 従って、この取付台座(30)を伝熱管(1) に固定した状態においては、上記溝部 (30)は、先端が閉塞した弓状の収納孔として機能することになり、この収納孔に 上記の測温センサ(3) を挿入していくと、溝部(31)の終端部(32)がテーパー状に 形成されていることにより、測温センサ(3) の先端は伝熱管(1) に向けて押圧さ れるごとく位置規制され、前記測温センサ(3) の先端における感温部（符号省略 ）が伝熱管(1) の外周面に密着するように設置されることになり、外側伝熱管の 温度測定を確実に行うことができる。Therefore, when the mounting pedestal (30) is fixed to the heat transfer tube (1), the groove (30) functions as an arcuate storage hole having a closed tip. As the temperature sensor (3) above is inserted into the temperature sensor (3), the end of the groove (31) (32) is formed in a taper shape, so the tip of the temperature sensor (3) is located at the heat transfer tube (1). ), The position of the temperature sensor (3) at the tip of the temperature sensor (3) is placed so as to be in close contact with the outer peripheral surface of the heat transfer tube (1). It is possible to reliably measure the temperature of the outer heat transfer tube.
【００１４】 尚、熱電対のように、感温部が先端部より所定距離後退した位置にある測温セ ンサにおいては、終端部(32)近傍の寸法形状を、測温センサ(3) が緊密に収容さ れる寸法にまで徐々に縮寸させたテーパー状部分(31a) と、測温センサ(3) を緊 密に収容し得る断面形状の直線状部分(31b) とを連続的に形成した形状とするの が好ましい（図３参照）。このような形状にすると、測温センサ(3) を上記溝部 (31)内に挿入することにより、取付台座(30)に対して緊密に挿入配置されると共 に、測温センサ(3) の感温部が伝熱管(1) 外周壁に密着しするため、より確実な 温度検出が可能となる。Incidentally, in a temperature measuring sensor such as a thermocouple in which the temperature sensing part is retracted from the tip part by a predetermined distance, the temperature measuring sensor (3) measures the size and shape near the terminal part (32). A tapered part (31a) that is gradually reduced to a size that allows it to be tightly accommodated and a straight part (31b) that has a cross-sectional shape that can tightly accommodate the temperature sensor (3) are continuously formed. It is preferable that the shape is formed (see FIG. 3). With such a shape, by inserting the temperature measuring sensor (3) into the groove (31), the temperature measuring sensor (3) is closely inserted and arranged in the mounting base (30), and at the same time, the temperature measuring sensor (3) is inserted. Since the temperature-sensitive part of is in close contact with the outer peripheral wall of the heat transfer tube (1), more reliable temperature detection can be performed.
【００１５】 また、取付台座(30)について更に説明を加えると、取付台座(30)は、例えば棒 状部材を所要の長さ（即ち、前記測温センサ(3) を緊密に挿入設置するに充分な 長さで、かつ非加熱側領域である前記外側スペーサ(16)の外側から加熱側領域で ある前記燃焼ガス通路(17)内における前記先端部に至る必要充分な長さ）に切断 し、切断面の一端面（即ち、前記外側スペーサ(16)の外側に位置する前記基端部 ）から、前記測温センサ(3) を緊密な状態で挿入設置するに必要充分な所要の幅 および深さの溝部(31)を刻設し、その後、外側伝熱管の表面の曲面に呼応した実 質上弓形の形状に形成される。しかして、取付台座(30)は、溝部(31)の終端部(3 2)が前記測定箇所に位置するように外側伝熱管の表面に固着して設けられる。Further, the mounting pedestal (30) will be further described. For the mounting pedestal (30), for example, a rod-shaped member having a required length (that is, the temperature measuring sensor (3) can be closely inserted and installed). Cut to a sufficient length from the outside of the outer spacer (16), which is the non-heating side region, to the tip in the combustion gas passage (17), which is the heating side region). , The necessary and sufficient width for inserting and installing the temperature measurement sensor (3) in a tight state from one end surface of the cut surface (that is, the base end portion located outside the outer spacer (16)). A groove (31) having a depth is engraved and then formed into a substantially arcuate shape corresponding to the curved surface of the outer heat transfer tube. Thus, the mounting base (30) is fixedly provided on the surface of the outer heat transfer tube so that the end portion (32) of the groove portion (31) is located at the measurement location.
【００１６】 ここで、溝部(31)の終端部(32)の燃焼ガス通路(17)内における位置について説 明すると、この終端部(32)は、燃焼ガスとの接触熱伝達が最も多く行われ、かつ 高温となる外側伝熱管の表面に位置するのが効果的であり、具体的には、図１に 示すように、ボイラーの中心Ｏ1 と外側伝熱管の中心Ｏ2 を結ぶ中心線Ａと、こ の外側伝熱管の中心Ｏ2 から燃焼ガス通路(17)のガス流Ｓに対して上流側に向か って延びる半径方向の放射線Ｂとの角度θが６０°以下の範囲における外側伝熱 管の表面Ｅ−Ｆ内に位置するのが好ましい。従って、前記取付台座(30)は、溝部 (31)の終端部(32)が前記Ｅ−Ｆの範囲内に位置するように設けられる。Here, the position of the end portion (32) of the groove portion (31) in the combustion gas passage (17) will be described. This end portion (32) has the largest contact heat transfer with the combustion gas. It is effective to locate it on the surface of the outer heat transfer tube, which has a high temperature. Specifically, as shown in Fig. 1, a center line A connecting the center O1 of the boiler and the center O2 of the outer heat transfer tube is used. The outer heat transfer in the range where the angle θ with the radial radiation B extending from the center O2 of the outer heat transfer tube toward the upstream side with respect to the gas flow S in the combustion gas passage (17) is 60 ° or less. It is preferably located within the surface E-F of the tube. Therefore, the mounting pedestal (30) is provided such that the terminal end portion (32) of the groove portion (31) is located within the range E-F.
【００１７】 以上の構成において、この考案の作用について説明する。点火により生じた燃 焼ガスは燃焼室(19)から第１開口部(18)に向かい、第１開口部(18)で分岐して燃 焼ガス通路(17)を各垂直伝熱管の長手方向に対して略直角に，即ち各垂直伝熱管 を横切る方向に流れ、そして第２開口部(20)で合流し、煙道(21)より外部に流出 する。このとき、燃焼ガスは、燃焼室(19)においては、内側環状伝熱管列(13)と 輻射伝熱を行い、燃焼ガス通路(17)においては、内外両環状伝熱管列(13),(14) を主として接触伝熱により熱伝達を行う。とくに、燃焼ガスの持つ運動エネルギ ーにより、燃焼ガスには外側方向への力が働き、燃焼ガス通路(17)において外側 環状伝熱管列(14)の外側伝熱管表面のうちＥ−Ｆ領域（図５参照）に最も多く接 触伝熱が行われ、熱伝達によりその部分が高温となる。The operation of the present invention having the above configuration will be described. Combustion gas generated by ignition goes from the combustion chamber (19) to the first opening (18), and branches at the first opening (18) through the combustion gas passage (17) in the longitudinal direction of each vertical heat transfer tube. Flow at a substantially right angle to each other, that is, in the direction crossing each vertical heat transfer tube, and join at the second opening (20), and flow out from the flue (21). At this time, the combustion gas radiatively transfers heat to the inner annular heat transfer tube row (13) in the combustion chamber (19), and the inner and outer annular heat transfer tube rows (13) and (13) in the combustion gas passage (17). 14) mainly transfers heat by contact heat transfer. In particular, the kinetic energy of the combustion gas exerts an outward force on the combustion gas, and in the combustion gas passageway (17), the EF region (of the outer heat transfer tube surface of the outer annular heat transfer tube row (14) ( (See Fig. 5), the most heat is transferred by contact, and that part becomes hot by heat transfer.
【００１８】 この考案においては、前記のように、取付台座(30)により測温センサ(3) の感 温部を所要の箇所に容易に設けることができる構成であるので、前記領域Ｅ−Ｆ に感温部を位置せしめることにより、垂直伝熱管の温度が的確に検出される。こ のようにして検出された温度信号により、伝熱部の局部過熱の防止，温度制御， あるいは伝熱面のスケール付着状況等の検出を確実に行うことができる。In the present invention, as described above, the temperature sensor of the temperature measuring sensor (3) can be easily provided at a required position by the mounting base (30), and therefore the area E-F The temperature of the vertical heat transfer tube can be accurately detected by locating the temperature-sensing portion at the position. With the temperature signal detected in this way, it is possible to prevent local overheating of the heat transfer section, control the temperature, or reliably detect the scale adhesion state on the heat transfer surface.
【００１９】 次に、この考案に係る第２の実施例を図４〜７を参照しながら説明する。 図面において、角型多管式貫流ボイラの基本的形状を形成する缶体(40)は、略 垂直な伝熱管(1A),(1A),・・・，(1B),(1B),・・・，(1C),(1C),・・・，(1D),( 1D),・・・および(1E),(1E),・・・から構成されている。これらの各伝熱管(1A) 〜(1E)は、複数本を実質上平行に縦列配置されており、各縦列配置により５列の 伝熱管群を構成し、全体として縦長の角型に形成されている。これらの各伝熱管 (1A)〜(1E)のうち、両側外方に位置する伝熱管群(1A),(1E) は、隣接するもの同 志がヒレ状部材(41),(41),・・・で連結されて、互いに略平行となるように対向 配置されており、未燃焼および燃焼済みのガス通路を画成する一側伝熱管列(42) と他側伝熱管列(43)とを形成している。この両伝熱管列(42),(43) の一側開口部 (44)には、全一次空気式で平面形状を呈する燃焼バーナ(45)がこの開口部(44)の 上下方向中心よりも下方に偏位して垂直方向に取り付けられており、また他側開 口部(46)にはその一部に燃焼排ガス出口(47)が形成されており、これにより未燃 焼および燃焼済みのガスは、基本的には各伝熱管(1A)〜(1E)と直交する方向に一 方向（図５で左から右方向）に流通するよう構成されている。Next, a second embodiment according to the present invention will be described with reference to FIGS. In the drawing, the can body (40) forming the basic shape of the rectangular multi-tube once-through boiler is a substantially vertical heat transfer tube (1A), (1A), ..., (1B), (1B) ,. .., (1C), (1C), ..., (1D), (1D), ... And (1E), (1E) ,. Each of these heat transfer tubes (1A) to (1E) is arranged in parallel in a plurality of columns in parallel, and each column arrangement forms a group of five heat transfer tubes, and is formed into a vertically long rectangular shape as a whole. ing. Of these heat transfer tubes (1A) to (1E), the heat transfer tube groups (1A) and (1E) located on the outer sides of both sides have fins (41), (41), , Which are connected to each other and are arranged so as to be substantially parallel to each other, and which define the unburned and burned gas passages, the one-side heat transfer tube row (42) and the other-side heat transfer tube row (43) And form. A combustion burner (45), which has a planar shape with all primary air type, is installed in the one side opening (44) of both heat transfer tube rows (42), (43) more than the vertical center of the opening (44). It is attached downwardly in a vertical direction, and a combustion exhaust gas outlet (47) is formed in a part of the other side opening (46), so that unburned and burned The gas is basically configured to flow in one direction (from left to right in FIG. 5) in a direction orthogonal to the heat transfer tubes (1A) to (1E).
【００２０】 尚、前記一側開口部(44)と他側開口部(46)とは、両伝熱管列(42),(43) と上部 ヘッダ(48)，下部ヘッダ(49)で形成される缶体(40)の左右の開口部を云い、厳密 には耐火部材(50),(50)の部分を除いた開口部を云う。また、前記各伝熱管(1A) 〜(1E)は、互いに隣り合う伝熱管群の伝熱管に対し千鳥状に配列されており、そ れらの各間隙は、伝熱管の直径と略等しいかそれ以下に設定してある。The one side opening (44) and the other side opening (46) are formed by both heat transfer tube rows (42), (43), an upper header (48) and a lower header (49). The left and right openings of the can body (40) are strictly speaking the openings excluding the refractory members (50), (50). Further, the heat transfer tubes (1A) to (1E) are arranged in a zigzag pattern with respect to the heat transfer tubes of the heat transfer tube groups adjacent to each other, and the respective gaps thereof are substantially equal to the diameter of the heat transfer tubes. It is set below that.
【００２１】 前記構成における角型缶体(40)は、燃焼バーナ(45)の前面にほとんど燃焼室が 形成されておらず、即ち燃焼バーナの燃焼面の近くに伝熱管が位置しており、一 次空気と燃料ガスとの混合気を伝熱管群間で低温燃焼させ、窒素酸化物の発生量 を押さえる構造となっている。In the rectangular can body (40) having the above-described configuration, the combustion chamber is hardly formed in the front surface of the combustion burner (45), that is, the heat transfer tube is located near the combustion surface of the combustion burner, The mixture of primary air and fuel gas is burned at low temperature between the heat transfer tube groups to reduce the amount of nitrogen oxides generated.
【００２２】 両伝熱管列(42),(43) のそれぞれの外側には、適宜な間隔を保持してそれぞれ 側壁(51),(52) が装着されており、両伝熱管列(42),(43) と両側壁(51),(52) と の間には、略密閉された空間(53),(54) がそれぞれ形成されている。この両空間 (53),(54) は、燃焼ガスが両伝熱管列(42),(43) から漏れた場合、缶体(40)外に 漏れ出ないように設けられているが、両側壁(51),(52) の内部圧力による変形を 防止するために、燃焼排ガス出口(47)と連通するように、燃焼排ガス出口(47)に 近い位置において他側伝熱管列(43)のヒレ状部材(41)またはその延長上に適宜な 連通孔（図示省略）を形成している。Side walls (51) and (52) are attached to the outer sides of both heat transfer tube rows (42) and (43) at appropriate intervals, respectively, and the heat transfer tube rows (42) Spaces (53) and (54), which are substantially sealed, are formed between the and (43) and the side walls (51) and (52), respectively. Both spaces (53) and (54) are provided so that if the combustion gas leaks from both heat transfer tube rows (42) and (43), they will not leak out of the can body (40). In order to prevent deformation due to the internal pressure of the walls (51), (52), the other side heat transfer tube row (43) should be located near the combustion exhaust gas outlet (47) so as to communicate with the combustion exhaust gas outlet (47). An appropriate communication hole (not shown) is formed on the fin-shaped member (41) or an extension thereof.
【００２３】 さて、この実施例においての取付台座(30)について説明すると、この角型缶体 構造では、上記第１の実施例と異なり、上述したように、燃焼バーナ(45)の前面 には殆ど燃焼室が形成されておらず、燃焼バーナの燃焼面の近くに伝熱管が位置 しているため、燃焼火炎の影響を受けることなく正確に温度検出を検出するため には、その取付位置が問題となる。Now, the mounting pedestal (30) in this embodiment will be described. In this rectangular can structure, unlike the first embodiment, as described above, the front surface of the combustion burner (45) is Almost no combustion chamber is formed and the heat transfer tube is located near the combustion surface of the combustion burner.Therefore, in order to detect the temperature accurately without being affected by the combustion flame, the mounting position is It becomes a problem.
【００２４】 ここで、伝熱管壁における伝熱量は、その輻射熱伝達量については、つぎの式 １．で表される。Here, regarding the amount of heat transfer in the wall of the heat transfer tube, regarding the amount of radiant heat transfer, the following equation 1. It is represented by.
【００２５】 Ｑ1 ＝ΦＡ（ＴＦ4 −ＴＣ4 ） ・・・・・・・ １． ただし、Φ：輻射率，Ａ：伝熱面積（ｍ2 ） ＴＦ：燃焼ガス温度（Ｋ），ＴＣ：伝熱管列温度（Ｋ） また、対流熱伝達量については、つぎの式２．で表される。Q1 = ΦA (TF4−TC4) ... However, Φ: emissivity, A: heat transfer area (m 2), TF: combustion gas temperature (K), TC: heat transfer tube row temperature (K), and the convective heat transfer amount, the following equation 2. It is represented by.
【００２６】 Ｑ2 ＝αＡ（ＴＦ−ＴＣ） ・・・・・・・ ２． ただし、αは熱伝達率Q2 = αA (TF-TC) ... Where α is the heat transfer coefficient
【００２７】 双方の伝熱量の和が大なる場合には、取付台座(30)の先端温度と伝熱管の壁温 度との差が大きくなり、熱応力が発生する。この結果、取付台座(30)および／ま たは伝熱管が破損してしまう。また、伝熱量が大きくなると、伝熱管と取付台座 (30)の先端までには温度勾配を生ずることとなり、燃焼ガス温度（ＴＦ）の変化 による測温センサ(3) の温度変化が大きくなり、正確な伝熱管列の温度を検出で きなくなってしまう。When the sum of the heat transfer amounts of both is large, the difference between the tip temperature of the mounting pedestal (30) and the wall temperature of the heat transfer tube becomes large, and thermal stress is generated. As a result, the mounting base (30) and / or the heat transfer tube will be damaged. In addition, when the amount of heat transfer increases, a temperature gradient occurs between the heat transfer tube and the tip of the mounting pedestal (30), and the temperature change of the temperature measuring sensor (3) due to the change of the combustion gas temperature (TF) increases. The temperature of the heat transfer tube array cannot be detected accurately.
【００２８】 そこで、この考案における実施例においては、測温センサ(3) の取付台座(30) を、他側伝熱管列(43)を形成する伝熱管のうち燃焼バーナ(45)に近く、最も過熱 し易い伝熱管(1E1) の上端部外周面に固着する。取付台座(30)は、これを固着す る伝熱管(1E1) と同材質， たとえばＳＳ材やＳＢ材等で形成されており、その 内周面の径は固着伝熱管(1E1) の外径と等しく、固着伝熱管(1E1) に密着した状 態で溶接等により固着される。そして、この取付台座(30)の取付け位置は、固着 伝熱管(1E1) において燃焼バーナ(45)から可能な限り離隔することが好ましく、 燃焼バーナ(45)の上端から 200 mm の位置が好適であるが、実施に応じては、こ れよりも上方でも効果的である。更に、取付台座(30)は、他側伝熱管列(43)の外 側から内側へ向けてヒレ状部材(41)を貫通した状態で固着されるもので、他側伝 熱管列(43)の内側へ突出する取付台座(30)の先端部(33)が、固着伝熱管(1E1) の ガス流剥離域Ｘ1 内に収まる位置となっている。Therefore, in the embodiment of the present invention, the mounting base (30) of the temperature measuring sensor (3) is installed near the combustion burner (45) among the heat transfer tubes forming the other side heat transfer tube row (43). Stick to the outer peripheral surface of the upper end of the heat transfer tube (1E1) that is most likely to overheat. The mounting pedestal (30) is made of the same material as the heat transfer tube (1E1) that secures it, such as SS material or SB material, and the diameter of the inner peripheral surface is the outside diameter of the heat transfer tube (1E1). Similarly, it is fixed by welding etc. in a state of being in close contact with the fixed heat transfer tube (1E1). The mounting position of this mounting pedestal (30) is preferably as far as possible from the combustion burner (45) in the fixed heat transfer tube (1E1), and a position 200 mm from the upper end of the combustion burner (45) is preferable. However, depending on the implementation, it is also effective above this. Further, the mounting pedestal (30) is fixed so as to pass through the fin-shaped member (41) from the outer side to the inner side of the heat transfer tube row on the other side (43). The tip portion (33) of the mounting pedestal (30) protruding inward is located within the gas flow separation area X1 of the fixed heat transfer tube (1E1).
【００２９】 取付台座(30)は、上述実施例同様に、その内部に熱電対やサーミスタ等からな る測温センサ(3) を緊密に保持するための溝部(31)が形成されており、この溝部 (31)の基端側はヒレ状部材(41)の外側に開口している。そして、測温センサ(3) のリード線(3A)は、溝部(31)から缶体(40)外へ導出される。The mounting pedestal (30) is formed with a groove (31) for closely holding the temperature measuring sensor (3) including a thermocouple, a thermistor, etc., inside the mounting pedestal (30), as in the above embodiment. The base end side of the groove (31) is open to the outside of the fin-shaped member (41). Then, the lead wire (3A) of the temperature measuring sensor (3) is led out of the groove (31) to the outside of the can body (40).
【００３０】 ここで、固着伝熱管(1E1) のガス流剥離域Ｘ1 について説明すると、ガス流剥 離域Ｘ1 は、図１に示すように、ガス流Ｇの下流側のヒレ状部材(41)を基準線と してガス流Ｇの上流方向へ約９０度の範囲内を云い、剥離点Ｈでガス流Ｇが固着 伝熱管(1E1) の壁面から剥離する。Here, the gas flow separation region X1 of the fixed heat transfer tube (1E1) will be described. The gas flow separation region X1 is, as shown in FIG. 1, a fin-shaped member (41) on the downstream side of the gas flow G. Is the reference line and is in the range of about 90 degrees in the upstream direction of the gas flow G, and the gas flow G is fixed at the separation point H and is separated from the wall surface of the heat transfer tube (1E1).
【００３１】 この実施例においては、燃焼バーナ(45)の燃焼ガス流は、図７に示すごとく、 中段部では略水平方向に流れ、また上下両側では上下に盛り上がり、各伝熱管群 (1A)〜(1E)とそれぞれ交叉した状態で流れる。そして、燃焼ガスは、各伝熱管群 (1A)〜(1E)の空間で燃焼反応と伝熱作用が同時に進行しながら流れるので、燃焼 ガスには燃焼火炎を含むことになる。取付台座(30)を固着する伝熱管(1E1) にお ける上下方向の燃焼ガス，即ち燃焼火炎温度分布は、図６で示されるようになっ ていて、燃焼バーナ(45)部で約1200〜1300度となり、取付台座(30)の位置で約10 00度となっている。このため、取付台座(30)の燃焼火炎から受ける輻射伝熱の下 方向からの熱量Ａと、それ以外の上方向および左右方向からの熱量Ｂは式１．で それぞれ求められるが、熱量Ｂは熱量Ａの約１／２と低い値となる。In this embodiment, as shown in FIG. 7, the combustion gas flow of the combustion burner (45) flows in a substantially horizontal direction in the middle stage and rises vertically in both upper and lower sides, and each heat transfer tube group (1A) ~ (1E) flows while crossing each. Then, the combustion gas flows while the combustion reaction and the heat transfer action simultaneously proceed in the space of each heat transfer tube group (1A) to (1E), so that the combustion gas contains a combustion flame. The vertical combustion gas, that is, the combustion flame temperature distribution in the heat transfer tube (1E1) fixing the mounting pedestal (30) is as shown in FIG. It is 1300 degrees, which is about 100 degrees at the mounting base (30). Therefore, the heat quantity A from the downward direction of the radiant heat received from the combustion flame of the mounting pedestal (30) and the heat quantity B from the other upward and lateral directions are given by the formula 1. The heat quantity B is as low as about 1/2 of the heat quantity A.
【００３２】 また、取付台座(30)が受ける燃焼ガス流による対流伝熱量は、燃焼バーナ(45) が下方に偏位しているため、固着伝熱管(1E1) の上端部付近では燃焼ガス流量が 少なく、取付台座(30)が燃焼ガス流に晒される量が少ないと共に、燃焼ガスに晒 されても、取付台座(30)の他側伝熱管列(43)の内側に突出する先端部(33)が固着 伝熱管(1E1) のガス流剥離域Ｘ1 に位置するように固着されているために、ガス 流剥離域Ｘ1 では局部熱伝達率が低く、燃焼ガスの対流伝熱による取付台座(30) への伝熱は少ない。固着伝熱管(1E1) 回りでの局部熱伝達率は、図７において模 式的に示している。The amount of convective heat transfer due to the combustion gas flow received by the mounting pedestal (30) is near the upper end of the fixed heat transfer tube (1E1) because the combustion burner (45) is deviated downward. And the mounting pedestal (30) is exposed to the combustion gas flow in a small amount, and even when exposed to the combustion gas, the tip () that protrudes inside the other side heat transfer tube row (43) of the mounting pedestal (30) 33) is stuck so that it is located in the gas flow separation area X1 of the heat transfer tube (1E1), so the local heat transfer coefficient is low in the gas flow separation area X1, and the mounting pedestal ( Heat transfer to 30) is small. The local heat transfer coefficient around the fixed heat transfer tube (1E1) is schematically shown in FIG.
【００３３】 以上のように、燃焼火炎および燃焼ガスから取付台座(30)への伝熱量を少なく できる結果、燃焼火炎および燃焼ガスの温度が変化しても、測温センサ(3) 部の 温度変化が少なくなり、正確なる固着伝熱管(1E1) の温度を検出できる。As described above, as a result of reducing the amount of heat transfer from the combustion flame and combustion gas to the mounting pedestal (30), even if the temperature of the combustion flame and combustion gas changes, the temperature of the temperature measurement sensor (3) part The change is small and the temperature of the fixed heat transfer tube (1E1) can be detected accurately.
【００３４】 尚、この考案は、前記実施例に限定されるものではなく、実施に応じて、種々 の変更，追加が可能なもので、たとえば取付台座(30)を互いに平行をなす一対の 伝熱管列(42),(43) のうち一側伝熱管列(42)を形成する伝熱管で、燃焼バーナ(4 5)に近い伝熱管(1A1) に固着する構成も好適である。また、取付台座(30)を両伝 熱管列(42),(43) の各伝熱管(1A1),(1E1) にそれぞれ固着し、２本の伝熱管の温 度を検出する構成も、実施に応じては好適である。更には、取付台座(30)を両伝 熱管列(42),(43) を形成する伝熱管ではなく、燃焼バーナ(45)に近く過熱し易い 伝熱管に固着する構成も好適である。It should be noted that the present invention is not limited to the above-described embodiment, but various modifications and additions can be made according to the implementation. For example, the mounting base (30) can be a pair of parallel transmissions. Of the heat pipe rows (42) and (43), a heat transfer tube forming one side heat transfer tube row (42) and being fixed to the heat transfer tube (1A1) close to the combustion burner (45) is also preferable. Also, the mounting base (30) is fixed to each heat transfer tube (1A1), (1E1) of both heat transfer tube rows (42), (43), and the temperature of two heat transfer tubes is detected. It is suitable according to. Further, it is also preferable that the mounting pedestal (30) is fixed not to the heat transfer tubes forming both the heat transfer tube rows (42) and (43) but to the heat transfer tubes near the combustion burner (45) and easily overheated.
【００３５】 以上の実施例においては、第１の実施例として２列環状伝熱管列を有するボイ ラを、第２の実施例として角型配置の伝熱管列を有するボイラを代表例に挙げて 説明したが、この考案においては、この様な伝熱管配列構造のボイラに限らず、 環状壁は、一重のものであっても、また二重以上のものであってもよく、また伝 熱管列は、円周状でなくとも、矩形形状であってもよい。In the above-described embodiments, a boiler having two rows of annular heat transfer tube rows as a first embodiment and a boiler having a square-shaped heat transfer tube row as a second embodiment are representative examples. As described above, in the present invention, the annular wall is not limited to the boiler having such a heat transfer tube array structure, and the annular wall may be a single wall or a double wall or more. May have a rectangular shape instead of the circumferential shape.
【００３６】 また、以上の実施例では、熱機器としてボイラに適用した実施例について説明 したが、この考案においては、以上のようなボイラのみならず、熱交換器や、排 熱回収装置等の加熱される伝熱部を有する熱機器において適用可能である。Further, in the above embodiment, the embodiment applied to the boiler as the heat equipment has been described, but in the present invention, not only the above-mentioned boiler but also a heat exchanger, an exhaust heat recovery device, etc. It can be applied to a thermal device having a heat transfer part to be heated.
【００３７】[0037]
以上のように、この考案は、取付台座を介して測温センサを設ける構成であり 、測温センサを挿入する収納孔を終端部が縮寸する溝部によって形成するように したため、伝熱面の構成如何にかかわらず、感温部を所望の箇所（例えば、最も 熱伝達の激しい高温部）に容易に密着状態で位置させることができ、これにより 誤差の生じ難い正確な伝熱管の温度検出を行うことができるため、確実な温度信 号を検出することができ、過熱防止，スケールの付着状況の検出等を的確に行う ことができる。 As described above, the present invention has a structure in which the temperature measuring sensor is provided via the mounting base, and the storage hole into which the temperature measuring sensor is inserted is formed by the groove portion whose end portion is reduced. Regardless of the configuration, the temperature sensitive part can be easily placed in close contact with the desired part (for example, the high temperature part where heat transfer is most intense), which allows accurate temperature detection of the heat transfer tube with less error. Since it can be performed, a reliable temperature signal can be detected, and overheat can be prevented and scale adhesion can be detected accurately.
【００３８】 また、取付台座は比較的短小なものであるから、加熱側領域において熱に晒さ れる部分が少なく、従って取付台座自体はもちろん、取付台座内に緊密に挿入設 置した測温センサの耐久性が向上し、温度検出器全体の耐用年数を大巾に延長す ることができる。Further, since the mounting pedestal is comparatively short and small, there is little portion exposed to heat in the heating side area. Therefore, not only the mounting pedestal itself but also the temperature measuring sensor installed tightly inside the mounting pedestal. The durability is improved, and the service life of the entire temperature sensor can be greatly extended.
【００３９】 また、伝熱管に有底孔を穿設する必要がなく、取付台座を容易，かつ確実に取 り付けることができ、加圧容器であるボイラの缶体内に配列した水管として強度 の低下を来すこともなく低コストで提供することができる。Further, since it is not necessary to form a bottomed hole in the heat transfer tube, the mounting pedestal can be easily and surely attached, and the water tube having strength as a water tube arranged in the can body of the boiler which is a pressure vessel It can be provided at low cost without degrading.
【００４０】 更には、熟練を要することなく、きわめて容易にメンテナンスを行うことがで き、この種の温度検出器としては頗る効果的である。Further, maintenance can be performed very easily without requiring skill, and it is very effective as a temperature detector of this type.
【提出日】平成５年８月３１日[Submission date] August 31, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【０００１】[0001]
この考案は、ボイラ等の熱機器における伝熱管温度を検出する温度検出器の取 付構造に関するものである。 The present invention relates to a temperature detector mounting structure for detecting the temperature of a heat transfer tube in a thermal device such as a boiler.
【０００２】[0002]
従来より、ボイラ，熱交換器等の伝熱管の過熱防止，温度制御あるいは伝熱管 内のスケール付着の検出等を目的として、伝熱管に熱電対，サーミスタ等の測温 センサを取付け、これにより伝熱管の温度を検出する方法が採用され、種々の取 付構造が提案されている。 Conventionally, a temperature measuring sensor such as a thermocouple or thermistor is attached to the heat transfer tube for the purpose of preventing overheating of the heat transfer tube of the boiler, heat exchanger, etc., temperature control, or detection of scale adhesion in the heat transfer tube. A method of detecting the temperature of the heat tube is adopted, and various mounting structures have been proposed.
【０００３】 この様な測温センサの取付方法としては、図８に示す如く、伝熱管(1) の肉厚 内に非加熱側領域Ｂから有底孔(2) を穿設し、この有底孔(2) 内に測温センサ(3 ) を嵌挿する方法、即ち、伝熱管直接取付方法が行われている。 しかし、このような伝熱管直接取付方法においては、測温センサ(3) の嵌挿部 、即ち、伝熱管(1) の肉厚部が曲面をなしているため、測温センサ(3) を嵌挿す るための有底孔(2) を穿設するには高度な技術を必要とすることはもちろん、非 加熱側領域Ｂから穿設する有底孔(2) の深さには限度があり、測温箇所を自由に 選定することができないと云う問題があり、特に、圧力容器であるボイラの伝熱 管に有底孔(2) を穿設しているため、伝熱管の肉厚が局部的に薄くなり、その強 度が低下すると共に、腐食等により破損をきたす危険が大であると云った問題も あった。As a method of mounting such a temperature measuring sensor, as shown in FIG. 8, a bottomed hole (2) is bored from the non-heating side region B in the wall thickness of the heat transfer tube (1), and The method of inserting the temperature measuring sensor (3) into the bottom hole (2), that is, the method of directly attaching the heat transfer tube is used. However, in such a direct mounting method for the heat transfer tube, the temperature sensor (3) is attached because the fitting part of the temperature sensor (3), that is, the thick part of the heat transfer tube (1) has a curved surface. It requires not only high technology to drill the bottomed hole (2) for insertion, but also the depth of the bottomed hole (2) drilled from the non-heating side area B is limited. However, there is a problem that it is not possible to freely select the temperature measurement point.In particular, since the bottomed hole (2) is bored in the heat transfer tube of the boiler, which is a pressure vessel, the wall thickness of the heat transfer tube is However, there was also a problem that the strength became low locally and the risk of damage due to corrosion etc. was great.
【０００４】[0004]
この考案は、前記問題点に鑑みてなされたもので、伝熱管の温度測定を確実に 行うことができ、加工，取付けが容易で、かつ、確実であり、しかも圧力容器で あるボイラにおける伝熱管として充分な強度を保持することができるようにした ものであり、更にメンテナンス性の向上を図るようにしたものである。 The present invention has been made in view of the above-mentioned problems, and can reliably measure the temperature of the heat transfer tube, is easy to process and install, and is reliable, and the heat transfer tube in the boiler is a pressure vessel. As a result, it is possible to maintain sufficient strength, and further to improve maintainability.
【０００５】[0005]
この考案は、上記課題を解決するためになされたもので、熱機器の伝熱領域に 位置する伝熱管の温度を検出するための温度検出器において、上記伝熱管の周面 に、先端部を前記加熱側領域Ａ内の管壁温度測定箇所まで延在させ、かつ基端部 を非加熱側領域Ｂ内に露出させるべく配した実質上弓形をなす取付台座と、該取 付台座内に緊密に挿入設置した測温センサとからなり、上記取付台座は、上記伝 熱管の外周面と接する取付面に、その長手方向の基端側から先端側に向けて、且 つ、この取付面の先端側一部を残して形成した溝部を有し、この溝部の終端部を 順次縮寸する形状としたことを特徴とする熱機器における伝熱管温度検出器の取 付構造を特徴としている。 The present invention has been made to solve the above problems, and in a temperature detector for detecting the temperature of a heat transfer tube located in a heat transfer area of a heat device, a tip portion is provided on the peripheral surface of the heat transfer tube. A substantially arcuate mounting pedestal that extends to the pipe wall temperature measurement point in the heating side area A and has a base end portion exposed in the non-heating side area B, and a tight fitting in the mounting pedestal. The temperature sensor is inserted into the heat transfer tube, and the mounting pedestal is attached to the mounting surface in contact with the outer peripheral surface of the heat transfer tube from the base end side in the longitudinal direction toward the tip side, and the tip of this mounting surface. It features a mounting structure for a heat transfer tube temperature detector in a thermal device, which has a groove part formed by leaving a part of the side and the end part of this groove part is successively reduced in size.
【０００６】[0006]
この考案によれば、測温センサの取付台座に形成した溝部の終端部を徐々に縮 寸した形状にしたことにより、測温センサを伝熱管の外表面に対して密着状態で 取付けることができ、また、この測温センサの取付に際して、取付台座のセンサ 取付部に挿入するだけで、センサ先端の測温部を伝熱管に密着させることができ て精度に優れ、この結果、伝熱管の温度検出を正確に行うことができる。 According to this invention, the temperature measuring sensor can be mounted in close contact with the outer surface of the heat transfer tube by gradually reducing the shape of the end of the groove formed on the mounting base of the temperature measuring sensor. Also, when mounting this temperature measuring sensor, the temperature measuring part at the tip of the sensor can be brought into close contact with the heat transfer tube by simply inserting it into the sensor mounting part of the mounting base, resulting in excellent accuracy. The detection can be performed accurately.
【０００７】[0007]
以下、この考案に係る熱機器における伝熱管温度検出器の取付構造の具体的実 施例を図面に基づいて詳細に説明する。 この考案は、熱機器の伝熱管の配置構造によってその取付け要領の差異が生じ るが、図１〜３に示す第１実施例では、従来からある円筒形状の缶体構造を有す るボイラ，図４〜７に示す第２実施例では、近年開発された所謂角型形状の缶体 構造を有するボイラに適用した場合について説明する。 Hereinafter, a specific embodiment of the mounting structure of the heat transfer tube temperature detector in the thermal equipment according to the present invention will be described in detail with reference to the drawings. In this invention, the mounting procedure differs depending on the arrangement structure of the heat transfer tubes of the heat equipment, but in the first embodiment shown in FIGS. 1 to 3, the boiler having the conventional cylindrical can structure, The second embodiment shown in FIGS. 4 to 7 will be described as applied to a boiler having a so-called square-shaped can body structure that has been developed in recent years.
【０００８】 図１〜３において、円筒形状の缶体(10)は、周知のように環状に形成した上部 管寄せ(11)及び下部管寄せ(12)を多数の垂直伝熱管で連結することにより、これ ら垂直伝熱管を半径方向に間隔をおいた内外２個の環状伝熱管列(13),(14) とし て配列し、該内外両環状伝熱管列(13),(14) の各垂直伝熱管をそれぞれ内側スペ ーサ(15)および外側スペーサ(16)によって連結し、前記内側環状伝熱管列(13)と 前記外側環状伝熱管列(14)との間に燃焼ガス通路(17)を形成し、前記内側環状伝 熱管列(13)に垂直伝熱管の全長に亘る第１開口部(18)を設けて燃焼室(19)と前記 燃焼ガス通路(17)とを連通させ、前記外側環状伝熱管列(14)に垂直伝熱管の全長 に亘る第２開口部(20)を設けて前記燃焼ガス通路(17)と煙道(21)とを連通させた 構造となっている。Referring to FIGS. 1 to 3, a cylindrical can body (10) is formed by connecting a plurality of vertical heat transfer tubes to an upper pipe header (11) and a lower pipe header (12) which are annularly formed as is well known. Therefore, these vertical heat transfer tubes are arranged as two inner and outer annular heat transfer tube rows (13) and (14) with radial intervals, and the inner and outer annular heat transfer tube rows (13) and (14) are The vertical heat transfer tubes are connected by an inner spacer (15) and an outer spacer (16), respectively, and a combustion gas passage (a) is provided between the inner annular heat transfer tube row (13) and the outer annular heat transfer tube row (14). 17) is formed, and a first opening (18) is provided in the inner annular heat transfer tube row (13) over the entire length of the vertical heat transfer tube to connect the combustion chamber (19) and the combustion gas passage (17). The outer annular heat transfer tube row (14) is provided with a second opening (20) extending over the entire length of the vertical heat transfer tube so that the combustion gas passage (17) and the flue (21) communicate with each other. There is.
【０００９】 外側環状伝熱管列(14)を形成している垂直伝熱管の温度を測定する熱電対ある いはサーミスタ等からなる測温センサ(3) の保護部材あるいは保持部材としての 機能を有する取付台座(30)は、前記外側スペーサ(16)を貫通して加熱側領域、即 ち、燃焼ガス通路(17)内から非加熱側領域、即ち、水冷壁である外側環状伝熱管 列(14)（外側スペーサ(16)）の外側に亘って設けられている。It has a function as a protective member or a holding member for a temperature measuring sensor (3) including a thermocouple or a thermistor for measuring the temperature of the vertical heat transfer tubes forming the outer annular heat transfer tube row (14). The mounting pedestal (30) penetrates the outer spacer (16) and is a heating side region, that is, from the inside of the combustion gas passage (17) to a non-heating side region, that is, an outer annular heat transfer tube row (14) which is a water cooling wall. ) (Outer spacer (16)).
【００１０】 この取付台座(30)の先端部(33)は、燃焼ガス通路(17)内において、外側環状伝 熱管列(14)を形成している外側伝熱管の表面における管壁温度の測定箇所（符号 省略）まで延在している。この先端部(33)が延在する管壁温度の測定箇所として は、外側伝熱管の管壁温度の測定に当たって、外側伝熱管の管壁温度を効率的、 かつ確実に測定するために、燃焼ガス通路(17)内において外側伝熱管の熱交換が 最も多く行われ、伝熱量が多く外側伝熱管の管壁温度が高温となる部分であり、 具体的には燃焼ガス通路(17)内において、外側伝熱管の両側の外側スペーサ(16) を結ぶ線を底辺とした場合の外側伝熱管の頂点近傍位置が効果的である。The tip portion (33) of the mounting pedestal (30) measures the tube wall temperature on the surface of the outer heat transfer tube forming the outer annular heat transfer tube row (14) in the combustion gas passage (17). It extends to the point (the reference number is omitted). For measuring the wall temperature of the outer heat transfer tube where the tip (33) extends, in order to measure the wall temperature of the outer heat transfer tube efficiently and reliably, In the gas passage (17), heat is most exchanged in the outer heat transfer tube, and the amount of heat transfer is large, so that the wall temperature of the outer heat transfer tube becomes high. Specifically, in the combustion gas passage (17) The position near the apex of the outer heat transfer tube is effective when the bottom side is the line connecting the outer spacers (16) on both sides of the outer heat transfer tube.
【００１１】 また、取付台座(30)の基端部(34)は、先端部(33)から外側伝熱管の表面に沿っ た状態で延伸し、非加熱側領域である外側スペーサ(16)の外側に露出している。 従って、取付台座(30)は、その先端部(33)から基端部(34)に至る長さが比較的短 小で、外側伝熱管の表面の曲面に対応して実質上弓形をなしている。Further, the base end portion (34) of the mounting pedestal (30) extends from the tip end portion (33) along the surface of the outer heat transfer tube, and the base end portion (34) of the outer spacer (16) which is a non-heating side region. It is exposed to the outside. Therefore, the mounting pedestal (30) has a relatively short length from the distal end (33) to the proximal end (34), and has a substantially arcuate shape corresponding to the curved surface of the outer heat transfer tube. There is.
【００１２】 そして、取付台座(30)には、図３(A)(B)(C) に示すように、上記伝熱管(1) の 外周面への取付面に長手方向の一部を残して溝部(31)を形成してある。この溝部 (31)は、取付面の取付台座基端部(34)側に隣接する端面から、対向する端面（取 付台座先端部(33)側）に向けて形成されており、この取付面の取付台座先端部(3 3)側は、この側の端面に所定距離を残して位置をこの溝部(31)の形成終端部(32) とし、終端部(32)近傍での溝部(31)の寸法は順次、浅くなるように設定してある 。即ち、この溝部(31)は、上記取付台座(30)の長手方向一端から他端に向けて前 記測温センサ(3) を収容しうる寸法（深さ及び幅）にて形成し、この溝部(31)の 終端部(32)近傍においては、上記測温センサ(3) が緊密に収容される寸法にまで 徐々に縮寸した形状としてある。Then, as shown in FIGS. 3 (A), (B), and (C), the mounting pedestal (30) leaves a part in the longitudinal direction on the mounting surface to the outer peripheral surface of the heat transfer tube (1). To form a groove (31). The groove (31) is formed from the end surface of the mounting surface adjacent to the base end (34) side of the mounting base toward the opposite end surface (the side of the front end (33) of the mounting base). On the side of the tip (33) of the mounting pedestal, the position is defined as the end point (32) where this groove (31) is formed, leaving a certain distance on the end face on this side, and the groove (31) near the end (32) The dimensions of are set to become shallower in sequence. That is, the groove portion (31) is formed with a size (depth and width) capable of accommodating the temperature measuring sensor (3) from one end to the other end in the longitudinal direction of the mounting base (30). In the vicinity of the terminal end portion (32) of the groove portion (31), the temperature measuring sensor (3) is gradually reduced to a size in which it can be tightly accommodated.
【００１３】 従って、この取付台座(30)を伝熱管(1) に固定した状態においては、上記溝部 (30)は、先端が閉塞した弓状の収納孔として機能することになり、この収納孔に 上記の測温センサ(3) を挿入していくと、溝部(31)の終端部(32)がテーパー状に 形成されていることにより、測温センサ(3) の先端は伝熱管(1) に向けて押圧さ れるごとく位置規制され、前記測温センサ(3) の先端における感温部（符号省略 ）が伝熱管(1) の外周面に密着するように設置されることになり、外側伝熱管の 温度測定を確実に行うことができる。Therefore, when the mounting pedestal (30) is fixed to the heat transfer tube (1), the groove (30) functions as an arcuate storage hole having a closed tip. As the temperature sensor (3) above is inserted into the temperature sensor (3), the end of the groove (31) (32) is formed in a taper shape, so the tip of the temperature sensor (3) is located at the heat transfer tube (1). ), The position of the temperature sensor (3) at the tip of the temperature sensor (3) is placed so as to be in close contact with the outer peripheral surface of the heat transfer tube (1). It is possible to reliably measure the temperature of the outer heat transfer tube.
【００１４】 尚、熱電対のように、感温部が先端部より所定距離後退した位置にある測温セ ンサにおいては、終端部(32)近傍の寸法形状を、測温センサ(3) が緊密に収容さ れる寸法にまで徐々に縮寸させたテーパー状部分(31a) と、測温センサ(3) を緊 密に収容し得る断面形状の直線状部分(31b) とを連続的に形成した形状とするの が好ましい（図３参照）。このような形状にすると、測温センサ(3) を上記溝部 (31)内に挿入することにより、取付台座(30)に対して緊密に挿入配置されると共 に、測温センサ(3) の感温部が伝熱管(1) 外周壁に密着しするため、より確実な 温度検出が可能となる。Incidentally, in a temperature measuring sensor such as a thermocouple in which the temperature sensing part is retracted from the tip part by a predetermined distance, the temperature measuring sensor (3) measures the size and shape near the terminal part (32). A tapered part (31a) that is gradually reduced to a size that allows it to be tightly accommodated and a straight part (31b) that has a cross-sectional shape that can tightly accommodate the temperature sensor (3) are continuously formed. It is preferable that the shape is formed (see FIG. 3). With such a shape, by inserting the temperature measuring sensor (3) into the groove (31), the temperature measuring sensor (3) is closely inserted and arranged in the mounting base (30), and at the same time, the temperature measuring sensor (3) is inserted. Since the temperature-sensitive part of is in close contact with the outer peripheral wall of the heat transfer tube (1), more reliable temperature detection can be performed.
【００１５】 また、取付台座(30)について更に説明を加えると、取付台座(30)は、例えば棒 状部材を所要の長さ（即ち、前記測温センサ(3) を緊密に挿入設置するに充分な 長さで、かつ非加熱側領域である前記外側スペーサ(16)の外側から加熱側領域で ある前記燃焼ガス通路(17)内における前記先端部に至る必要充分な長さ）に切断 し、切断面の一端面（即ち、前記外側スペーサ(16)の外側に位置する前記基端部 ）から、前記測温センサ(3) を緊密な状態で挿入設置するに必要充分な所要の幅 および深さの溝部(31)を刻設し、その後、外側伝熱管の表面の曲面に呼応した実 質上弓形の形状に形成される。しかして、取付台座(30)は、溝部(31)の終端部(3 2)が前記測定箇所に位置するように外側伝熱管の表面に固着して設けられる。Further, the mounting pedestal (30) will be further described. For the mounting pedestal (30), for example, a rod-shaped member having a required length (that is, the temperature measuring sensor (3) can be closely inserted and installed). Cut to a sufficient length from the outside of the outer spacer (16), which is the non-heating side region, to the tip in the combustion gas passage (17), which is the heating side region). , The necessary and sufficient width for inserting and installing the temperature measurement sensor (3) in a tight state from one end surface of the cut surface (that is, the base end portion located outside the outer spacer (16)). A groove (31) having a depth is engraved and then formed into a substantially arcuate shape corresponding to the curved surface of the outer heat transfer tube. Thus, the mounting base (30) is fixedly provided on the surface of the outer heat transfer tube so that the end portion (32) of the groove portion (31) is located at the measurement location.
【００１６】 ここで、溝部(31)の終端部(32)の燃焼ガス通路(17)内における位置について説 明すると、この終端部(32)は、燃焼ガスとの接触熱伝達が最も多く行われ、かつ 高温となる外側伝熱管の表面に位置するのが効果的であり、具体的には、図１に 示すように、ボイラの中心Ｏ1 と外側伝熱管の中心Ｏ2 を結ぶ中心線Ａと、この 外側伝熱管の中心Ｏ2 から燃焼ガス通路(17)のガス流Ｓに対して上流側に向かっ て延びる半径方向の放射線Ｂとの角度θが６０°以下の範囲における外側伝熱管 の表面Ｅ−Ｆ内に位置するのが好ましい。従って、前記取付台座(30)は、溝部(3 1)の終端部(32)が前記Ｅ−Ｆの範囲内に位置するように設けられる。Here, the position of the end portion (32) of the groove portion (31) in the combustion gas passage (17) will be described. This end portion (32) has the largest contact heat transfer with the combustion gas. It is effective to locate it on the surface of the outer heat transfer tube, which is hot and has a high temperature. Specifically, as shown in Fig. 1, a center line A connecting the center O1 of the boiler and the center O2 of the outer heat transfer tube is used. , The surface E of the outer heat transfer tube in the range of an angle θ of 60 ° or less with the radial radiation B extending from the center O2 of the outer heat transfer tube toward the upstream of the gas flow S in the combustion gas passage (17). It is preferably located within -F. Therefore, the mounting pedestal (30) is provided so that the end portion (32) of the groove portion (31) is located within the range of EF.
【００１７】 以上の構成において、この考案の作用について説明する。点火により生じた燃 焼ガスは燃焼室(19)から第１開口部(18)に向かい、第１開口部(18)で分岐して燃 焼ガス通路(17)を各垂直伝熱管の長手方向に対して略直角に、即ち、各垂直伝熱 管を横切る方向に流れ、そして第２開口部(20)で合流し、煙道(21)より外部に流 出する。このとき、燃焼ガスは、燃焼室(19)においては、内側環状伝熱管列(13) と輻射伝熱を行い、燃焼ガス通路(17)においては、内外両環状伝熱管列(13),(14 ） を主として接触伝熱により熱伝達を行う。特に、燃焼ガスの持つ運動エネル
ギ ーにより、燃焼ガスには外側方向への力が働き、燃焼ガス通路(17)において外側 環状伝熱管列(14)の外側伝熱管表面のうちＥ−Ｆ領域（図５参照）に最も多く接 触伝熱が行われ、熱伝達によりその部分が高温となる。The operation of the present invention having the above configuration will be described. Combustion gas generated by ignition goes from the combustion chamber (19) to the first opening (18), and branches at the first opening (18) through the combustion gas passage (17) in the longitudinal direction of each vertical heat transfer tube. Flow at right angles to each other, that is, in the direction crossing each vertical heat transfer tube, and join at the second opening (20), and flow out from the flue (21). At this time, the combustion gas performs radiant heat transfer with the inner annular heat transfer tube row (13) in the combustion chamber (19), and the inner and outer annular heat transfer tube rows (13), () in the combustion gas passage (17). 14) mainly conducts heat transfer by contact heat transfer. In particular, the kinetic energy of the combustion gas exerts an outward force on the combustion gas, and the EF region (of the outer heat transfer tube surface of the outer annular heat transfer tube row (14) in the combustion gas passage (17) ( (See Fig. 5), the most heat is transferred by contact, and that part becomes hot by heat transfer.
【００１８】 この考案においては、前記のように、取付台座(30)により測温センサ(3) の感 温部を所要の箇所に容易に設けることができる構成であるので、前記領域Ｅ−Ｆ に感温部を位置せしめることにより、垂直伝熱管の温度が的確に検出される。こ のようにして検出された温度信号により、伝熱部の局部過熱の防止，温度制御， あるいは伝熱面のスケール付着状況等の検出を確実に行うことができる。In the present invention, as described above, the temperature sensor of the temperature measuring sensor (3) can be easily provided at a required position by the mounting base (30), and therefore the area E-F The temperature of the vertical heat transfer tube can be accurately detected by locating the temperature-sensing portion at the position. With the temperature signal detected in this way, it is possible to prevent local overheating of the heat transfer section, control the temperature, or reliably detect the scale adhesion state on the heat transfer surface.
【００１９】 次に、この考案に係る第２の実施例を図４〜７を参照しながら説明する。 図面において、角型多管式貫流ボイラの基本的形状を形成する缶体(40)は、略 垂直な伝熱管(1A),(1A),・・・，(1B),(1B),・・・，(1C),(1C),・・・，(1D),( 1D),・・・および(1E),(1E),・・・から構成されている。これらの各伝熱管(1A) 〜(1E)は、複数本を実質上平行に縦列配置されており、各縦列配置により５列の 伝熱管群を構成し、全体として縦長の角型に形成されている。これらの各伝熱管 (1A)〜(1E)のうち、両側外方に位置する伝熱管群(1A),(1E) は、隣接するもの同 志がヒレ状部材(41),(41),・・・で連結されて、互いに略平行となるように対向 配置されており、未燃焼および燃焼済みのガス通路を画成する一側伝熱管列(42) と他側伝熱管列(43)とを形成している。この両伝熱管列(42),(43) の一側開口部 (44)には、全一次空気式で平面形状を呈する燃焼バーナ(45)がこの開口部(44)の 上下方向中心よりも下方に偏位して垂直方向に取り付けられており、また他側開 口部(46)にはその一部に燃焼排ガス出口(47)が形成されており、これにより未燃 焼および燃焼済みのガスは、基本的には各伝熱管(1A)〜(1E)と直交する方向に一 方向（図５で左から右方向）に流通するよう構成されている。Next, a second embodiment according to the present invention will be described with reference to FIGS. In the drawing, the can body (40) forming the basic shape of the rectangular multi-tube once-through boiler is a substantially vertical heat transfer tube (1A), (1A), ..., (1B), (1B) ,. .., (1C), (1C), ..., (1D), (1D), ... And (1E), (1E) ,. Each of these heat transfer tubes (1A) to (1E) is arranged in parallel in a plurality of columns in parallel, and each column arrangement forms a group of five heat transfer tubes, and is formed into a vertically long rectangular shape as a whole. ing. Of these heat transfer tubes (1A) to (1E), the heat transfer tube groups (1A) and (1E) located on the outer sides of both sides have fins (41), (41), , Which are connected to each other and are arranged so as to be substantially parallel to each other, and which define the unburned and burned gas passages, the one-side heat transfer tube row (42) and the other-side heat transfer tube row (43) And form. A combustion burner (45), which has a planar shape with all primary air type, is installed in the one side opening (44) of both heat transfer tube rows (42), (43) more than the vertical center of the opening (44). It is attached downwardly in a vertical direction, and a combustion exhaust gas outlet (47) is formed in a part of the other side opening (46), so that unburned and burned The gas is basically configured to flow in one direction (from left to right in FIG. 5) in a direction orthogonal to the heat transfer tubes (1A) to (1E).
【００２０】 尚、前記一側開口部(44)と他側開口部(46)とは、両伝熱管列(42),(43) と上部 ヘッダ(48)，下部ヘッダ(49)で形成される缶体(40)の左右の開口部を云い、厳密 には耐火部材(50),(50)の部分を除いた開口部を云う。また、前記各伝熱管(1A) 〜(1E)は、互いに隣り合う伝熱管群の伝熱管に対し千鳥状に配列されており、そ れらの各間隙は、伝熱管の直径と略等しいかそれ以下に設定してある。The one side opening (44) and the other side opening (46) are formed by both heat transfer tube rows (42), (43), an upper header (48) and a lower header (49). The left and right openings of the can body (40) are strictly speaking the openings excluding the refractory members (50), (50). Further, the heat transfer tubes (1A) to (1E) are arranged in a zigzag pattern with respect to the heat transfer tubes of the heat transfer tube groups adjacent to each other, and the respective gaps thereof are substantially equal to the diameter of the heat transfer tubes. It is set below that.
【００２１】 前記構成における角型缶体(40)は、燃焼バーナ(45)の前面にほとんど燃焼室が 形成されておらず、即ち、燃焼バーナの燃焼面の近くに伝熱管が位置しており、 一次空気と燃料ガスとの混合気を伝熱管群間で低温燃焼させ、窒素酸化物の発生 量を押さえる構造となっている。In the rectangular can body (40) having the above-described structure, the combustion chamber is hardly formed in front of the combustion burner (45), that is, the heat transfer tube is located near the combustion surface of the combustion burner. The mixture of primary air and fuel gas is burned at a low temperature between the heat transfer tube groups to reduce the amount of nitrogen oxides generated.
【００２２】 両伝熱管列(42),(43) のそれぞれの外側には、適宜な間隔を保持してそれぞれ 側壁(51),(52) が装着されており、両伝熱管列(42),(43) と両側壁(51),(52) と の間には、略密閉された空間(53),(54) がそれぞれ形成されている。この両空間 (53),(54) は、燃焼ガスが両伝熱管列(42),(43) から漏れた場合、缶体(40)外に 漏れ出ないように設けられているが、両側壁(51),(52) の内部圧力による変形を 防止するために、燃焼排ガス出口(47)と連通するように、燃焼排ガス出口(47)に 近い位置において他側伝熱管列(43)のヒレ状部材(41)またはその延長上に適宜な 連通孔（図示省略）を形成している。Side walls (51) and (52) are attached to the outer sides of both heat transfer tube rows (42) and (43) at appropriate intervals, respectively, and the heat transfer tube rows (42) Spaces (53) and (54), which are substantially sealed, are formed between the and (43) and the side walls (51) and (52), respectively. Both spaces (53) and (54) are provided so that if the combustion gas leaks from both heat transfer tube rows (42) and (43), they will not leak out of the can body (40). In order to prevent deformation due to the internal pressure of the walls (51), (52), the other side heat transfer tube row (43) should be located near the combustion exhaust gas outlet (47) so as to communicate with the combustion exhaust gas outlet (47). An appropriate communication hole (not shown) is formed on the fin-shaped member (41) or an extension thereof.
【００２３】 さて、この実施例においての取付台座(30)について説明すると、この角型缶体 構造では、上記第１の実施例と異なり、上述したように、燃焼バーナ(45)の前面 には殆ど燃焼室が形成されておらず、燃焼バーナの燃焼面の近くに伝熱管が位置 しているため、燃焼火炎の影響を受けることなく正確に温度検出を検出するため には、その取付位置が問題となる。Now, the mounting pedestal (30) in this embodiment will be described. In this rectangular can structure, unlike the first embodiment, as described above, the front surface of the combustion burner (45) is Almost no combustion chamber is formed and the heat transfer tube is located near the combustion surface of the combustion burner.Therefore, in order to detect the temperature accurately without being affected by the combustion flame, the mounting position is It becomes a problem.
【００２４】 ここで、伝熱管壁における伝熱量は、その輻射熱伝達量については、つぎの式 １．で表される。Here, regarding the amount of heat transfer in the wall of the heat transfer tube, regarding the amount of radiant heat transfer, the following equation 1. It is represented by.
【００２５】 Ｑ1 ＝ΦＡ（ＴＦ4 −ＴＣ4 ） ・・・・・・・ １． ただし、Φ：輻射率，Ａ：伝熱面積（ｍ2 ） ＴＦ：燃焼ガス温度（Ｋ），ＴＣ：伝熱管列温度（Ｋ） また、対流熱伝達量については、つぎの式２．で表される。Q1 = ΦA (TF4−TC4) ... However, Φ: emissivity, A: heat transfer area (m 2), TF: combustion gas temperature (K), TC: heat transfer tube row temperature (K), and the convective heat transfer amount, the following equation 2. It is represented by.
【００２６】 Ｑ2 ＝αＡ（ＴＦ−ＴＣ） ・・・・・・・ ２． ただし、αは熱伝達率Q2 = αA (TF-TC) ... Where α is the heat transfer coefficient
【００２７】 双方の伝熱量の和が大なる場合には、取付台座(30)の先端温度と伝熱管の壁温 度との差が大きくなり、熱応力が発生する。この結果、取付台座(30)および／ま たは伝熱管が破損してしまう。また、伝熱量が大きくなると、伝熱管と取付台座 (30)の先端までには温度勾配を生ずることとなり、燃焼ガス温度（ＴＦ）の変化 による測温センサ(3) の温度変化が大きくなり、正確な伝熱管列の温度を検出で きなくなってしまう。When the sum of the heat transfer amounts of both is large, the difference between the tip temperature of the mounting pedestal (30) and the wall temperature of the heat transfer tube becomes large, and thermal stress is generated. As a result, the mounting base (30) and / or the heat transfer tube will be damaged. In addition, when the amount of heat transfer increases, a temperature gradient occurs between the heat transfer tube and the tip of the mounting pedestal (30), and the temperature change of the temperature measuring sensor (3) due to the change of the combustion gas temperature (TF) increases. The temperature of the heat transfer tube array cannot be detected accurately.
【００２８】 そこで、この考案における実施例においては、測温センサ(3) の取付台座(30) を、他側伝熱管列(43)を形成する伝熱管のうち燃焼バーナ(45)に近く、最も過熱 し易い伝熱管(1E1) の上端部外周面に固着する。取付台座(30)は、これを固着す る伝熱管(1E1) と同材質、例えばＳＳ材やＳＢ材等で形成されており、その内周 面の径は固着伝熱管(1E1) の外径と等しく、固着伝熱管(1E1) に密着した状態で 溶接等により固着される。そして、この取付台座(30)の取付け位置は、固着伝熱 管(1E1) において燃焼バーナ(45)から可能な限り離隔することが好ましく、燃焼 バーナ(45)の上端から 200 mm の位置が好適であるが、実施に応じては、これよ りも上方でも効果的である。更に、取付台座(30)は、他側伝熱管列(43)の外側か ら内側へ向けてヒレ状部材(41)を貫通した状態で固着されるもので、他側伝熱管 列(43)の内側へ突出する取付台座(30)の先端部(33)が、固着伝熱管(1E1) のガス 流剥離域Ｘ1 内に収まる位置となっている。Therefore, in the embodiment of the present invention, the mounting base (30) of the temperature measuring sensor (3) is installed near the combustion burner (45) among the heat transfer tubes forming the other side heat transfer tube row (43). Stick to the outer peripheral surface of the upper end of the heat transfer tube (1E1) that is most likely to overheat. The mounting pedestal (30) is made of the same material as the heat transfer tube (1E1) that secures it, for example, SS material or SB material, and the diameter of its inner surface is the outer diameter of the heat transfer tube (1E1). Similarly, it is fixed by welding, etc. in a state of being in close contact with the fixed heat transfer tube (1E1). The mounting position of the mounting pedestal (30) is preferably as far as possible from the combustion burner (45) in the fixed heat transfer tube (1E1), and a position of 200 mm from the upper end of the combustion burner (45) is preferable. However, depending on the implementation, it may be more effective above this. Furthermore, the mounting pedestal (30) is fixed so as to penetrate the fin-shaped member (41) from the outside to the inside of the other-side heat transfer tube array (43). The tip portion (33) of the mounting pedestal (30) projecting inward is located within the gas flow separation area X1 of the fixed heat transfer tube (1E1).
【００２９】 取付台座(30)は、上述実施例同様に、その内部に熱電対やサーミスタ等からな る測温センサ(3) を緊密に保持するための溝部(31)が形成されており、この溝部 (31)の基端側はヒレ状部材(41)の外側に開口している。そして、測温センサ(3) のリード線(3A)は、溝部(31)から缶体(40)外へ導出される。The mounting pedestal (30) is formed with a groove (31) for closely holding the temperature measuring sensor (3) including a thermocouple, a thermistor, etc., inside the mounting pedestal (30), as in the above embodiment. The base end side of the groove (31) is open to the outside of the fin-shaped member (41). Then, the lead wire (3A) of the temperature measuring sensor (3) is led out of the groove (31) to the outside of the can body (40).
【００３０】 ここで、固着伝熱管(1E1) のガス流剥離域Ｘ1 について説明すると、ガス流剥 離域Ｘ1 は、図１に示すように、ガス流Ｇの下流側のヒレ状部材(41)を基準線と してガス流Ｇの上流方向へ約９０度の範囲内を云い、剥離点Ｈでガス流Ｇが固着 伝熱管(1E1) の壁面から剥離する。Here, the gas flow separation region X1 of the fixed heat transfer tube (1E1) will be described. The gas flow separation region X1 is, as shown in FIG. 1, a fin-shaped member (41) on the downstream side of the gas flow G. Is the reference line and is in the range of about 90 degrees in the upstream direction of the gas flow G, and the gas flow G is fixed at the separation point H and is separated from the wall surface of the heat transfer tube (1E1).
【００３１】 この実施例においては、燃焼バーナ(45)の燃焼ガス流は、図７に示すごとく、 中段部では略水平方向に流れ、また上下両側では上下に盛り上がり、各伝熱管群 (1A)〜(1E)とそれぞれ交叉した状態で流れる。そして、燃焼ガスは、各伝熱管群 (1A)〜(1E)の空間で燃焼反応と伝熱作用が同時に進行しながら流れるので、燃焼 ガスには燃焼火炎を含むことになる。取付台座(30)を固着する伝熱管(1E1) にお ける上下方向の燃焼ガス、即ち、燃焼火炎温度分布は、図６で示されるようにな っていて、燃焼バーナ(45)部で約1200〜1300度となり、取付台座(30)の位置で約 1000度となっている。このため、取付台座(30)の燃焼火炎から受ける輻射伝熱の 下方向からの熱量Ａと、それ以外の上方向および左右方向からの熱量Ｂは式１． でそれぞれ求められるが、熱量Ｂは熱量Ａの約１／２と低い値となる。In this embodiment, as shown in FIG. 7, the combustion gas flow of the combustion burner (45) flows in a substantially horizontal direction in the middle stage and rises vertically in both upper and lower sides, and each heat transfer tube group (1A) ~ (1E) flows while crossing each. Then, the combustion gas flows while the combustion reaction and the heat transfer action simultaneously proceed in the space of each heat transfer tube group (1A) to (1E), so that the combustion gas contains a combustion flame. The combustion gas temperature distribution in the vertical direction, that is, the combustion flame temperature distribution in the heat transfer tube (1E1) fixing the mounting pedestal (30) is as shown in FIG. It is 1200 to 1300 degrees, which is about 1000 degrees at the position of the mounting base (30). Therefore, the heat quantity A from the downward direction of the radiant heat received from the combustion flame of the mounting pedestal (30) and the heat quantity B from the other upward and leftward directions are as shown in Equation 1. The heat quantity B is as low as about 1/2 of the heat quantity A.
【００３２】 また、取付台座(30)が受ける燃焼ガス流による対流伝熱量は、燃焼バーナ(45) が下方に偏位しているため、固着伝熱管(1E1) の上端部付近では燃焼ガス流量が 少なく、取付台座(30)が燃焼ガス流に晒される量が少ないと共に、燃焼ガスに晒 されても、取付台座(30)の他側伝熱管列(43)の内側に突出する先端部(33)が固着 伝熱管(1E1) のガス流剥離域Ｘ1 に位置するように固着されているために、ガス 流剥離域Ｘ1 では局部熱伝達率が低く、燃焼ガスの対流伝熱による取付台座(30) への伝熱は少ない。固着伝熱管(1E1) 回りでの局部熱伝達率は、図７において模 式的に示している。The amount of convective heat transfer due to the combustion gas flow received by the mounting pedestal (30) is near the upper end of the fixed heat transfer tube (1E1) because the combustion burner (45) is deviated downward. And the mounting pedestal (30) is exposed to the combustion gas flow in a small amount, and even when exposed to the combustion gas, the tip () that protrudes inside the other side heat transfer tube row (43) of the mounting pedestal (30) 33) is stuck so that it is located in the gas flow separation area X1 of the heat transfer tube (1E1), so the local heat transfer coefficient is low in the gas flow separation area X1, and the mounting pedestal ( Heat transfer to 30) is small. The local heat transfer coefficient around the fixed heat transfer tube (1E1) is schematically shown in FIG.
【００３３】 以上のように、燃焼火炎および燃焼ガスから取付台座(30)への伝熱量を少なく できる結果、燃焼火炎および燃焼ガスの温度が変化しても、測温センサ(3) 部の 温度変化が少なくなり、正確なる固着伝熱管(1E1) の温度を検出できる。As described above, as a result of reducing the amount of heat transfer from the combustion flame and combustion gas to the mounting pedestal (30), even if the temperature of the combustion flame and combustion gas changes, the temperature of the temperature measurement sensor (3) part The change is small and the temperature of the fixed heat transfer tube (1E1) can be detected accurately.
【００３４】 尚、この考案は、前記実施例に限定されるものではなく、実施に応じて、種々 の変更、追加が可能である。 例えば、取付台座(30)を互いに平行をなす一対の伝熱管列(42),(43) のうち一 側伝熱管列(42)を形成する伝熱管であって、燃焼バーナ(45)に近い伝熱管(1A1) に固着する構成も好適である。また、取付台座(30)を両伝熱管列(42),(43) の各 伝熱管(1A1),(1E1) にそれぞれ固着し、２本の伝熱管の温度を検出する構成も実 施に応じては好適である。更には、取付台座(30)を両伝熱管列(42),(43) を形成 する伝熱管ではなく、燃焼バーナ(45)に近く過熱し易い伝熱管に固着する構成も 好適である。The present invention is not limited to the above embodiment, but various modifications and additions can be made depending on the implementation. For example, a heat transfer tube forming one side heat transfer tube row (42) of a pair of heat transfer tube rows (42), (43) that are parallel to each other on the mounting pedestal (30), and are close to the combustion burner (45). A configuration in which it is fixed to the heat transfer tube (1A1) is also suitable. In addition, the mounting pedestal (30) is fixed to each heat transfer tube (1A1), (1E1) of both heat transfer tube rows (42), (43), and the temperature of the two heat transfer tubes is detected. Accordingly, it is preferable. Further, it is also preferable that the mounting pedestal (30) is fixed to a heat transfer tube which is close to the combustion burner (45) and easily overheats, instead of the heat transfer tube forming the rows (42) and (43) of the heat transfer tubes.
【００３５】 更に、上記の取付台座(30)に形成する溝部(31)は、上記実施例では１箇所であ ったが、この考案においては、溝部(31)の形成数は１箇所に限らず、複数箇所形 成したものであってもよく、また、この溝部に収納する測温センサの数も１個に 限らず、上記溝部に対応させて複数個、或は、上記溝部の形成箇所数よりも少な くてもよい。 例えば、上記取付台座(30)を２箇所の溝部を有するものとし、この取付台座を 伝熱管に取付けた後、その夫々に、測温センサを収納する構成も好適である。こ の構成の場合、２個の測温センサの夫々の測温結果を比較しながら、温度を測定 することにより、測温センサ自体の良，不良の判定が可能であり、上記の伝熱管 の過熱防止、温度制御あるいはスケール付着等の検出等が有効に行なえる。 また、このような取付台座の場合、２個の溝部のうち、一方のみに測温センサ を収納し、残りの溝部を補修用の溝部として利用する構成も好適である。即ち、 一方の溝部に収納した測温センサに断線等の不良が発生した場合、不良の発生し た測温センサを取付台座から取り外すことなく、補修用の溝部に新たな測温セン サを収納することによって、伝熱管の測温が可能となり、また、両方の測温セン サからの測温結果を比較することにより、交換作業が完全に行なえたかどうかの 確認も可能であるため、その取替工数を大幅に短縮することができる。Further, although the groove portion (31) formed on the mounting pedestal (30) is one place in the above-mentioned embodiment, the number of the groove portion (31) formed is limited to one place in the present invention. However, the number of temperature measuring sensors housed in the groove is not limited to one, and a plurality of temperature measuring sensors may be accommodated in the groove, or a plurality of locations corresponding to the groove may be formed. It may be less than the number. For example, it is also preferable that the mounting pedestal (30) has two groove portions, and after the mounting pedestal is mounted on the heat transfer tube, the temperature measuring sensor is housed in each of the mounting pedestals. With this configuration, it is possible to determine whether the temperature measuring sensor itself is good or defective by measuring the temperature while comparing the temperature measurement results of the two temperature measuring sensors. Overheat prevention, temperature control, detection of scale adhesion, etc. can be effectively performed. Further, in the case of such a mounting base, it is also preferable that the temperature measuring sensor is housed in only one of the two groove portions and the remaining groove portion is used as a groove portion for repair. That is, if a defect such as a wire breakage occurs in the temperature measuring sensor housed in one of the grooves, a new temperature measuring sensor is stored in the repair groove without removing the defective temperature measuring sensor from the mounting base. By doing so, it is possible to measure the temperature of the heat transfer tube, and by comparing the temperature measurement results from both temperature measurement sensors, it is possible to check whether the replacement work has been completed. The number of replacement steps can be greatly reduced.
【００３６】 以上の実施例においては、第１の実施例として２列環状伝熱管列を有するボイ ラを、第２の実施例として角型配置の伝熱管列を有するボイラを代表例に挙げて 説明したが、この考案においては、この様な伝熱管配列構造のボイラに限らず、 環状壁は、一重のものであっても、また二重以上のものであってもよく、また伝 熱管列は、円周状でなくとも、矩形形状であってもよい。In the above-described embodiments, a boiler having a two-row annular heat transfer tube row as a first embodiment and a boiler having a square-shaped heat transfer tube row as a second embodiment are representative examples. As described above, in the present invention, the annular wall is not limited to the boiler having such a heat transfer tube array structure, and the annular wall may be a single wall or a double wall or more. May have a rectangular shape instead of the circumferential shape.
【００３７】 また、以上の実施例では、熱機器としてボイラに適用した実施例について説明 したが、この考案においては、以上のようなボイラのみならず、熱交換器や、排 熱回収装置等の加熱される伝熱部を有する熱機器において適用可能である。Further, in the above embodiments, the embodiments applied to the boiler as the heat equipment have been described, but in the present invention, not only the above-mentioned boiler but also a heat exchanger, an exhaust heat recovery device, etc. It can be applied to a thermal device having a heat transfer part to be heated.
【００３８】[0038]
以上のように、この考案は、取付台座を介して測温センサを設ける構成であり 、測温センサを挿入する収納孔を終端部が縮寸する溝部によって形成するように したため、伝熱面の構成如何にかかわらず、感温部を所望の箇所（例えば、最も 熱伝達の激しい高温部）に容易に密着状態で位置させることができ、これにより 誤差の生じ難い正確な伝熱管の温度検出を行うことができるため、確実な温度信 号を検出することができ、過熱防止，スケールの付着状況の検出等を的確に行う ことができる。 As described above, the present invention has a structure in which the temperature measuring sensor is provided via the mounting base, and the storage hole into which the temperature measuring sensor is inserted is formed by the groove portion whose end portion is reduced. Regardless of the configuration, the temperature sensitive part can be easily placed in close contact with the desired part (for example, the high temperature part where heat transfer is most intense), which allows accurate temperature detection of the heat transfer tube with less error. Since it can be performed, a reliable temperature signal can be detected, and overheat can be prevented and scale adhesion can be detected accurately.
【００３９】 また、取付台座は比較的短小なものであるから、加熱側領域において熱に晒さ れる部分が少なく、従って取付台座自体はもちろん、取付台座内に緊密に挿入設 置した測温センサの耐久性が向上し、温度検出器全体の耐用年数を大巾に延長す ることができる。Further, since the mounting pedestal is relatively short and small, there is little portion exposed to heat in the heating side region. Therefore, not only the mounting pedestal itself but also the temperature measuring sensor of the temperature measuring sensor that is closely inserted and installed in the mounting pedestal. The durability is improved, and the service life of the entire temperature sensor can be greatly extended.
【００４０】 また、伝熱管に有底孔を穿設する必要がなく、取付台座を容易、かつ確実に取 り付けることができ、圧力容器であるボイラの缶体内に配列した水管として強度 の低下を来すこともなく低コストで提供することができる。Further, since it is not necessary to form a bottomed hole in the heat transfer tube, the mounting pedestal can be easily and surely attached, and the strength of the water tube arranged in the can body of the boiler, which is a pressure vessel, is reduced. Can be offered at low cost without coming.
【００４１】 更には、熟練を要することなく、きわめて容易にメンテナンスを行うことがで き、この種の温度検出器としては頗る効果的である。Furthermore, maintenance can be performed very easily without requiring any skill, which is extremely effective as a temperature detector of this type.
【図１】図１は、この考案を円筒形状の缶体を有する熱
機器に適用した一実施例を示す要部の拡大断面図であ
る。FIG. 1 is an enlarged sectional view of a main part showing an embodiment in which the present invention is applied to a thermal device having a cylindrical can body.
【図２】図２は、上記熱機器の概略的な横断面図であ
る。FIG. 2 is a schematic cross-sectional view of the thermal device.
【図３】図３(A)(B)(C) は、夫々、取付台座の横断面
図、Ｉ−Ｉ線拡大断面図、II−II線拡大断面図である。3 (A), (B), and (C) are a cross-sectional view of a mounting pedestal, an I-I line enlarged cross-sectional view, and a II-II line enlarged cross-sectional view, respectively.
【図４】図４は、この考案を角型形状の缶体を有する熱
機器に適用した一実施例を示す要部の拡大断面図であ
る。FIG. 4 is an enlarged cross-sectional view of a main part showing an embodiment in which the present invention is applied to a thermal device having a rectangular can body.
【図５】図５は、図４に示す熱機器の概略的な横断面図
である。FIG. 5 is a schematic cross-sectional view of the thermal equipment shown in FIG.
【図６】図６は、図５の矢視III 方向の一部を切欠した
側面説明図である。6 is a side explanatory view in which a part in the direction of arrow III in FIG. 5 is cut away.
【図７】図７は、伝熱管(1E1) 回りの局部熱伝達係数を
模式的に示した説明図である。FIG. 7 is an explanatory diagram schematically showing a local heat transfer coefficient around a heat transfer tube (1E1).
【図８】図８は、従来の温度検出装置の取付構造を例示
する説明図である。FIG. 8 is an explanatory diagram illustrating a mounting structure of a conventional temperature detecting device.
(1) ‥‥ 伝熱管 (1A)〜(1E) ‥‥ 伝熱管 (1A1) ‥‥ 伝熱管 (1E1) ‥‥ 伝熱管 (3) ‥‥ 測温センサ (10) ‥‥ 缶体 (11) ‥‥ 上部管寄せ (12) ‥‥ 下部管寄せ (13) ‥‥ 内側環状伝熱管列 (14) ‥‥ 外側環状伝熱管列 (15) ‥‥ 内側スペーサ (16) ‥‥ 外側スペーサ (17) ‥‥ 燃焼ガス通路 (18) ‥‥ 第１開口部 (19) ‥‥ 燃焼室 (20) ‥‥ 第２開口部 (21) ‥‥ 煙道 (30) ‥‥ 取付台座 (31) ‥‥ 溝部 (32) ‥‥ 終端部 (33) ‥‥ 先端部 (3A) ‥‥ リード線 (40) ‥‥ 角型缶体 (41) ‥‥ ヒレ状部材 (42) ‥‥ 一側伝熱管列 (43) ‥‥ 他側伝熱管列 (44) ‥‥ 一側開口部 (45) ‥‥ 燃焼バーナ (46) ‥‥ 他側開口部 (47) ‥‥ 燃焼排ガス出口 (48) ‥‥ 上部ヘッダ (49) ‥‥ 下部ヘッダ (50) ‥‥ 耐火部材 (51) ‥‥ 側壁 (52) ‥‥ 側壁 (53) ‥‥ 空間 (54) ‥‥ 空間 (1) Heat transfer tube (1A) to (1E) Heat transfer tube (1A1) Heat transfer tube (1E1) Heat transfer tube (3) Temperature sensor (10) Can body (11) ∙ Upper pipe header (12) ‥‥ Bottom pipe header (13) ‥‥ Inner annular heat transfer pipe array (14) ‥‥ Outer annular heat transfer pipe array (15) ‥‥ Inner spacer (16) ‥‥ Outer spacer (17) ∙ Combustion gas passage (18) ∙ 1st opening (19) ∙ Combustion chamber (20) ∙ 2nd opening (21) ∙ Flue (30) ∙ Mounting base (31) ∙ Groove (32) ・ ・ ・ Terminal (33) ‥‥ Tip (3A) ‥‥ Lead wire (40) ‥ Square can body (41) ‥ Fin-shaped member (42) ‥ One side Heat transfer tube row (43) ) ... other side heat transfer tube row (44) ... one side opening (45) ... combustion burner (46) ... other side opening (47) ... combustion exhaust gas outlet (48) ... upper header (49) ) ・ ・ ・ Lower header (50) ・ ・ ・ Fireproof material (51) ‥ Side wall (52) ‥ Side wall (53) ‥ Space (54) ・ ・ ・ Space
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年８月３１日[Submission date] August 31, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【書類名】 明細書[Document name] Statement
【考案の名称】 熱機器における伝熱管温度検出器の
取付構造[Title of device] Mounting structure for heat transfer tube temperature detector in thermal equipment
【実用新案登録請求の範囲】[Scope of utility model registration request]
【図面の簡単な説明】[Brief description of drawings]
【図１】図１は、この考案を円筒形状の缶体を有する熱
機器に適用した一実施例を示す 要部の拡大断面図である。FIG. 1 is an enlarged cross-sectional view of a main part showing an embodiment in which the present invention is applied to a thermal device having a cylindrical can body.
【図２】図２は、上記熱機器の概略的な横断面図であ
る。FIG. 2 is a schematic cross-sectional view of the thermal device.
【図３】図３(A)(B)(C) は、夫々、取付台座の横断面
図、Ｉ−Ｉ線拡大断面図、II−II 線拡大断面図である。3 (A), (B), and (C) are a cross-sectional view of a mounting pedestal, an II-line enlarged cross-sectional view, and a II-II line enlarged cross-sectional view, respectively.
【図４】図４は、この考案を角型形状の缶体を有する熱
機器に適用した一実施例を示す 要部の拡大断面図である。FIG. 4 is an enlarged cross-sectional view of essential parts showing an embodiment in which the present invention is applied to a thermal device having a rectangular can body.
【図５】図５は、図４に示す熱機器の概略的な横断面図
である。FIG. 5 is a schematic cross-sectional view of the thermal equipment shown in FIG.
【図６】図６は、図５の矢視III 方向の一部を切欠した
側面説明図である。6 is a side explanatory view in which a part in the direction of arrow III in FIG. 5 is cut away.
【図７】図７は、伝熱管(1E1) 回りの局部熱伝達係数を
模式的に示した説明図である。FIG. 7 is an explanatory diagram schematically showing a local heat transfer coefficient around a heat transfer tube (1E1).
【図８】図８は、従来の温度検出装置の取付構造を例示
する説明図である。FIG. 8 is an explanatory diagram illustrating a mounting structure of a conventional temperature detecting device.
【符号の説明】 (1) ‥‥ 伝熱管 (1A)〜(1E) ‥‥ 伝熱管 (1A1) ‥‥ 伝熱管 (1E1) ‥‥ 伝熱管 (3) ‥‥ 測温センサ (10) ‥‥ 缶体 (11) ‥‥ 上部管寄せ (12) ‥‥ 下部管寄せ (13) ‥‥ 内側環状伝熱管列 (14) ‥‥ 外側環状伝熱管列 (15) ‥‥ 内側スペーサ (16) ‥‥ 外側スペーサ (17) ‥‥ 燃焼ガス通路 (18) ‥‥ 第１開口部 (19) ‥‥ 燃焼室 (20) ‥‥ 第２開口部 (21) ‥‥ 煙道 (30) ‥‥ 取付台座 (31) ‥‥ 溝部 (32) ‥‥ 終端部 (33) ‥‥ 先端部 (3A) ‥‥ リード線 (40) ‥‥ 角型缶体 (41) ‥‥ ヒレ状部材 (42) ‥‥ 一側伝熱管列 (43) ‥‥ 他側伝熱管列 (44) ‥‥ 一側開口部 (45) ‥‥ 燃焼バーナ (46) ‥‥ 他側開口部 (47) ‥‥ 燃焼排ガス出口 (48) ‥‥ 上部ヘッダ (49) ‥‥ 下部ヘッダ (50) ‥‥ 耐火部材 (51) ‥‥ 側壁 (52) ‥‥ 側壁 (53) ‥‥ 空間 (54) ‥‥ 空間[Explanation of symbols] (1) Heat transfer tube (1A) to (1E) Heat transfer tube (1A1) Heat transfer tube (1E1) Heat transfer tube (3) Temperature sensor (10) Can body (11) ・ ・ ・ Top pipe assembly (12) ・ ・ ・ Bottom pipe assembly (13) ‥ ‥ Inner ring heat transfer tube row (14) ‥ ‥ Outer ring heat transfer tube row (15) ‥ ‥ Inner spacer (16) ‥ ‥ Outer spacer (17) ··· Combustion gas passage (18) ··· First opening (19) ··· Combustion chamber (20) ··· Second opening (21) ··· Flue (30) ··· Mounting base ( 31) ・ ・ ・ Groove (32) ‥ End (33) ‥ Tip (3A) ‥ ‥ Lead wire (40) ‥ Square can body (41) ‥ Fins (42) ‥ One side Heat transfer tube row (43) ‥ Other side heat transfer tube row (44) ‥‥ One side opening (45) ‥ ‥ Combustion burner (46) ‥ Other side opening (47) ‥ Combustion exhaust gas outlet (48) ‥ Upper header (49) Lower header (50) Fireproof material (51) Side wall (52) Side wall (53) Space (54) Space
Claims (1)
度を検出するための温度検出器において、上記伝熱管
(1) の周面に、先端部を前記加熱側領域Ａ内の管壁温度
測定箇所まで延在させ、かつ基端部を非加熱側領域Ｂ内
に露出させるべく配した実質上弓形をなす取付台座(30)
と、該取付台座(30)内に緊密に挿入設置した測温センサ
(3) とからなり、上記取付台座(30)は、上記伝熱管(1)
の外周面と接する取付面に、その長手方向の基端側から
先端側に向けて、且つ、この取付面の先端側一部を残し
て形成した溝部(31)を有し、この溝部(31)の終端部(32)
を順次縮寸する形状としたことを特徴とする熱機器にお
ける伝熱管温度検出器の取付構造。1. A temperature detector for detecting the temperature of a heat transfer tube located in a heat transfer area of a heat device, the heat transfer tube comprising:
On the peripheral surface of (1), a substantially arcuate shape is formed in which the tip end portion is extended to the pipe wall temperature measurement location in the heating side area A, and the base end portion is exposed in the non-heating side area B. Mounting base (30)
And a temperature measuring sensor that is tightly inserted and installed in the mounting base (30)
(3) and the mounting base (30) is the heat transfer tube (1).
Has a groove portion (31) formed on the mounting surface in contact with the outer peripheral surface of the mounting surface from the base end side in the longitudinal direction toward the tip end side and leaving a part of the tip end side of the mounting surface. ) End (32)
A heat transfer tube temperature detector mounting structure for a thermal device, characterized in that the dimensions are sequentially reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992072168U JP2548392Y2 (en) | 1992-09-21 | 1992-09-21 | Mounting structure of heat transfer tube temperature detector in thermal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992072168U JP2548392Y2 (en) | 1992-09-21 | 1992-09-21 | Mounting structure of heat transfer tube temperature detector in thermal equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0628669U true JPH0628669U (en) | 1994-04-15 |
| JP2548392Y2 JP2548392Y2 (en) | 1997-09-17 |
Family
ID=13481444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992072168U Expired - Lifetime JP2548392Y2 (en) | 1992-09-21 | 1992-09-21 | Mounting structure of heat transfer tube temperature detector in thermal equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548392Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337007A (en) * | 1998-05-27 | 1999-12-10 | Takuma Co Ltd | Method and apparatus for detecting overheating of boiling body |
| WO2009044567A1 (en) * | 2007-10-05 | 2009-04-09 | Miura Co., Ltd. | Boiler |
| CN110173715A (en) * | 2019-07-02 | 2019-08-27 | 神华福能发电有限责任公司 | Boiler water cooling equipment and temperature measurement component assembly method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59144437U (en) * | 1983-03-11 | 1984-09-27 | 古河特殊金属工業株式会社 | Ferromagnetic surface temperature measurement device |
| JPS6244227U (en) * | 1985-09-03 | 1987-03-17 | ||
| JPH01167633U (en) * | 1988-05-17 | 1989-11-24 |
-
1992
- 1992-09-21 JP JP1992072168U patent/JP2548392Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59144437U (en) * | 1983-03-11 | 1984-09-27 | 古河特殊金属工業株式会社 | Ferromagnetic surface temperature measurement device |
| JPS6244227U (en) * | 1985-09-03 | 1987-03-17 | ||
| JPH01167633U (en) * | 1988-05-17 | 1989-11-24 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337007A (en) * | 1998-05-27 | 1999-12-10 | Takuma Co Ltd | Method and apparatus for detecting overheating of boiling body |
| WO2009044567A1 (en) * | 2007-10-05 | 2009-04-09 | Miura Co., Ltd. | Boiler |
| JP2009092278A (en) * | 2007-10-05 | 2009-04-30 | Miura Co Ltd | Boiler |
| KR101385542B1 (en) * | 2007-10-05 | 2014-04-15 | 미우라고교 가부시키카이샤 | Boiler |
| CN110173715A (en) * | 2019-07-02 | 2019-08-27 | 神华福能发电有限责任公司 | Boiler water cooling equipment and temperature measurement component assembly method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2548392Y2 (en) | 1997-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7249885B2 (en) | Heat flux measuring device for pressure pipes, method for producing a measuring device, method for monitoring an operating state of a heat exchanger, heat exchanger and method for measuring a heat flux | |
| US8591102B2 (en) | Measuring device for a heat exchanger | |
| US6485174B1 (en) | Attachable heat flux measuring device | |
| US20100212603A1 (en) | Boiler | |
| JP5818567B2 (en) | Boiler scale detector | |
| JPH0628669U (en) | Mounting structure of heat transfer tube temperature detector in thermal equipment | |
| JP5141142B2 (en) | boiler | |
| MX2010006119A (en) | Firetube heat exchanger. | |
| CN105784122B (en) | A kind of high temperature blasthole temperature measuring equipment and high temperature blasthole temp measuring method | |
| US6364658B1 (en) | Partially studded radiant tubes | |
| JPH0616244Y2 (en) | Water pipe temperature detector in a multi-tube once-through boiler. | |
| JPH0812112B2 (en) | Mounting structure of water pipe temperature detector in square multi-tube once-through boiler | |
| JPH0714838Y2 (en) | Water tube temperature detector for boiler | |
| KR101186974B1 (en) | Bolier with improved water level detecting system | |
| CN209778746U (en) | Pyrolysis feeding hearth | |
| JPH0717926Y2 (en) | Water pipe temperature detectors such as multi-tube once-through boilers | |
| JP4684235B2 (en) | Stirling engine assembly | |
| JPS6321129B2 (en) | ||
| JP3857421B2 (en) | Can body overheating detection method and apparatus | |
| JP7075379B2 (en) | Heat history evaluation method for heat-resistant members and heat history evaluation device | |
| JPS5920656Y2 (en) | Thermocouple for measuring furnace tube wall temperature | |
| KR101614363B1 (en) | once-through boiler | |
| RU19163U1 (en) | DEVICE FOR MEASURING TEMPERATURE OF METAL OF STEAM PIPES OF STEAM BOILERS | |
| SU1267174A1 (en) | Suction thermometer | |
| JP4262876B2 (en) | Incomplete combustion prevention device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |