JPS6333602B2 - - Google Patents
Info
- Publication number
- JPS6333602B2 JPS6333602B2 JP3242881A JP3242881A JPS6333602B2 JP S6333602 B2 JPS6333602 B2 JP S6333602B2 JP 3242881 A JP3242881 A JP 3242881A JP 3242881 A JP3242881 A JP 3242881A JP S6333602 B2 JPS6333602 B2 JP S6333602B2
- Authority
- JP
- Japan
- Prior art keywords
- support
- heating tube
- tube
- metal fitting
- transmitted
- 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
- 238000010438 heat treatment Methods 0.000 claims description 46
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 5
- 230000035882 stress Effects 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 8
- 238000010248 power generation Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Landscapes
- Supports For Pipes And Cables (AREA)
Description
【発明の詳細な説明】
本発明は、発電用ボイラ、産業用ボイラ、熱交
換器等の後部煙道に配置される横行蛇行する加熱
管の支持装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support device for a heating tube that is arranged in a rear flue of a power generation boiler, an industrial boiler, a heat exchanger, etc.
発電用ボイラは第１図の側面図に示されている
ように、燃焼室１、排ガス煙道に配置された加熱
管群２〜５、および煙道周壁を形成する周壁冷却
管７とから成り、この中に排ガスの流れ６を作つ
ている。 As shown in the side view of FIG. 1, the power generation boiler consists of a combustion chamber 1, a group of heating tubes 2 to 5 arranged in an exhaust gas flue, and a peripheral cooling pipe 7 forming a peripheral wall of the flue. , creating an exhaust gas flow 6 therein.
従来公知のボイラ煙道に配置される横行蛇行す
る加熱群の支持装置は第２図の側面図に示される
ように、加熱管５の支持スペーサ８、加熱管の曲
管部に溶接取付けされた支持ラグ９、前記支持ラ
グをそれぞれ連結支持する支持板１０、および加
熱管５の荷重を周壁冷却管７に伝達支持するため
の支持ラグ１１を有している。 As shown in the side view of FIG. 2, the conventionally known supporting device for the heating group disposed in the boiler flue is welded to the support spacer 8 of the heating tube 5 and to the curved pipe portion of the heating tube. It has a support lug 9, a support plate 10 that connects and supports the support lug, and a support lug 11 that transmits and supports the load of the heating tube 5 to the peripheral cooling tube 7.
第３図および第４図はそれぞれ第２図の−
断面図および−断面図であつて、この場合に
は排ガスは上方から下方に向つて流れるようにさ
れており、横行蛇行する加熱管５の上段部５−
１，５−２，５−２，５−３…の複数本の端部の
曲管部Ａに支持プラグ９が取付けられて、これら
支持ラグ間を連結支持する連結板１０が溶接取付
けされ、連結板１０の上端部には後部煙道周壁管
７に支持するための支持ラグ１１が設けられ、横
行蛇行する加熱管５の荷重は、前記支持ラグ１１
を介して周壁管７の連結部７−１に伝達支持され
るようになつている。 Figures 3 and 4 are - of Figure 2, respectively.
These are a cross-sectional view and a cross-sectional view, in which the exhaust gas is made to flow from above to below, and the upper part 5 of the heating pipe 5 is meandering horizontally.
1, 5-2, 5-2, 5-3... A support plug 9 is attached to the bent pipe portion A at the end of a plurality of the support lugs, and a connecting plate 10 that connects and supports these support lugs is attached by welding. A support lug 11 for supporting the rear flue peripheral wall pipe 7 is provided at the upper end of the connecting plate 10, and the load of the heating pipe 5 that meanders laterally is carried by the support lug
It is designed to be transmitted and supported to the connecting portion 7-1 of the peripheral wall tube 7 via the connecting portion 7-1 of the peripheral wall tube 7.
加熱管５の下段部管５−ｎは横行蛇行する水平
直管部に設けられた支持スペーサ８−ｎを介して
隣接する上段加熱管５−ｎ−１に伝達され、さら
に同様に各々支持スペーサ８を介して上段部へ伝
達され、前記支持ラグ９、連結板１０および支持
ラグ１１を介して周壁管７に伝達支持される。 The lower tube 5-n of the heating tube 5 is transmitted to the adjacent upper heating tube 5-n-1 via a support spacer 8-n provided in a horizontal straight tube section that meanders horizontally, and is further similarly connected to each support spacer 8-n. 8 to the upper stage section, and is transmitted to and supported by the peripheral wall tube 7 via the support lug 9, the connecting plate 10, and the support lug 11.
この公知手段においては、前述のように支持ラ
グ９が加熱管５の曲管部に溶接取付けされてお
り、下段部の加熱管が伝達支持されるため、大き
い応力が生じることになる。さらに、前記支持ラ
グ９は曲管部から延長して突出され先端部の連結
板１０で支持されるため、加熱管に溶接取付けさ
れた溶接部には曲げ応力が生じる。また前記支持
ラグ９が加熱管５の曲管部に取付けられるためそ
の製作組立も難しいので、溶接の信頼性も低いこ
とになる。さらには、曲管部は加熱管の熱応力が
最大になる部分でもあり、種々の応力が合成さ
れ、過大な応力が生じることになり好ましくな
い。 In this known means, as described above, the support lug 9 is welded to the curved pipe portion of the heating tube 5, and the lower heating tube is transmitted and supported, resulting in a large stress. Further, since the support lug 9 is extended and protruded from the curved pipe section and supported by the connecting plate 10 at the tip, bending stress is generated at the welded portion attached to the heating tube. Furthermore, since the support lug 9 is attached to the curved portion of the heating tube 5, it is difficult to manufacture and assemble it, resulting in low welding reliability. Furthermore, the curved pipe portion is also the part where the thermal stress of the heating tube is maximum, and various stresses are combined, resulting in excessive stress, which is not preferable.
支持ラグ１１においては加熱管５への荷重Ｗを
を周壁管７部で支持するため、荷重Ｗの位置と支
持点位置とがずれているので、支持ラグ１１部に
は回転力が生じ、その一部は周壁管７に支持さ
れ、残りは支持ラグ９を介して加熱管５に伝達さ
れ、支持スペーサ８により支持されることにな
る。ところが、周壁管７は垂直方向の管軸方向に
おいては相当の耐力があるが、回転力や、水平方
向の力に対しては耐力が小さいため、そのような
回転力等が生じることは好ましくない。また支持
スペーサ８部においては横行蛇行する加熱管５の
上下隣接管がそれぞれ支持スペーサ８で固定され
ており、加熱管５の隣接管の間の温度差により支
持スペーサの固定溶接部には熱応力が生じ好まし
くない。さらに前従の回転力Ｍが溶接部に伝達さ
れるために、溶接部に曲げ応力が生じることにな
り、下段部の加熱管５の荷重支持による応力とが
合成され、大きい応力が発生することになる。こ
のように従来の公知の手段においては支持スペー
サ８、支持ラグ９および支持ラグ１１部にはそれ
ぞれ偏つた過大な応力が生じる欠点を有し、さら
に周壁管７にも回転力が生じ、周壁管に曲げ応力
を生じさせる等の欠点を有していた。 In the support lug 11, since the load W on the heating tube 5 is supported by the peripheral wall tube 7, the position of the load W and the support point position are misaligned, so a rotational force is generated in the support lug 11, and the A portion will be supported by the peripheral wall tube 7, and the rest will be transmitted to the heating tube 5 via the support lug 9 and supported by the support spacer 8. However, although the circumferential wall tube 7 has a considerable strength in the vertical direction of the tube axis, its strength against rotational force and horizontal force is small, so it is undesirable for such rotational force to occur. . Furthermore, in the support spacer 8 section, the upper and lower adjacent tubes of the heating tube 5 that meander sideways are fixed by the support spacer 8, respectively, and due to the temperature difference between the adjacent tubes of the heating tube 5, thermal stress is applied to the fixed welded part of the support spacer. This is not desirable. Furthermore, since the previous rotational force M is transmitted to the welded part, a bending stress is generated in the welded part, and this is combined with the stress due to the load support of the heating tube 5 in the lower part, and a large stress is generated. become. As described above, the conventional known means has the disadvantage that excessive and biased stress is generated in the support spacer 8, support lug 9, and support lug 11 portions, and rotational force is also generated in the peripheral wall tube 7, causing the peripheral wall tube to This had disadvantages such as the generation of bending stress.
本発明は、このような従来公知の欠点を解消
し、信頼性の高い支持装置を提供するものであ
る。 The present invention eliminates these conventionally known drawbacks and provides a highly reliable support device.
第５図は本発明によるボイラ煙道に配置される
横行蛇行する加熱管群の支持装置の側面図であ
る。 FIG. 5 is a side view of a support device for a group of traversing heating tubes arranged in a boiler flue according to the present invention.
２枚の支持板１２は加熱管５を支持し、これら
の支持板１２は支持間隔片１３によりはしご状に
間隔を置いて連結されている。三角支持金物１４
はその水平側辺が周壁冷却管連結部７−１に接し
て加熱管の荷重を周壁冷却管７に伝達し、回転力
を横バツクステイ２１−１，２１−２に伝達す
る。連結リンク１５は回転力を水平力として伝達
するもので、支持ピン１６，１７により力を伝達
し、また集合部材１８は複数個の幅方向の加熱管
５の力を集合して縦バツクステイ２０へ伝達する
もので、集合部材１８と縦バツクステイ２０とは
連結金物１９により連結されている。 Two support plates 12 support the heating tube 5, and these support plates 12 are connected by support spacing pieces 13 at intervals in the form of a ladder. Triangular support hardware 14
The horizontal side thereof contacts the peripheral wall cooling pipe connecting portion 7-1 and transmits the load of the heating tube to the peripheral wall cooling pipe 7, and transmits the rotational force to the lateral backstays 21-1 and 21-2. The connecting link 15 transmits the rotational force as a horizontal force, and the force is transmitted by the support pins 16 and 17, and the collecting member 18 collects the forces of the heating tubes 5 in the width direction and sends them to the vertical backstay 20. The gathering member 18 and the vertical backstay 20 are connected by a connecting metal fitting 19.
すなわち横行蛇行する加熱管５には溶接等によ
り直接支持ラグを取付けることなく、はしご式の
支持装置により、各段の加熱管５−１〜５−ｎを
それぞれ支持することにより、加熱管を拘束する
ことなく隣接する加熱管の間に生じる膨張差を自
由に逃がす構造とし、さらに三角支持金具１４を
設けることにより、周壁冷却管７には垂直力だけ
を伝達し、回転力や水平力が全く伝達されないよ
うにしている。 That is, without directly attaching support lugs by welding or the like to the heating tubes 5 that meander sideways, the heating tubes are restrained by supporting each stage of the heating tubes 5-1 to 5-n using a ladder-type support device. By adopting a structure that freely releases the expansion difference that occurs between adjacent heating tubes without causing any damage, and by providing the triangular support fitting 14, only vertical force is transmitted to the peripheral cooling tube 7, and no rotational force or horizontal force is transmitted to the peripheral cooling tube 7. I'm trying to prevent it from being transmitted.
以上述べた構成につき更に詳述すれば、第５図
に示されるように横行蛇行する加熱管５の曲管部
から水平方向に移る近傍の両端２ケ所に支持板１
２が配置されていて、この支持板１２は、第５図
の−断面図の第６図に示されるように、加熱
管５の両側面からはさむように配置され、各段の
加熱管５の下方には、各々支持間隔片１３が設け
られる。この場合支持間隔片１３は、支持板１２
に溶接固定されているだけで、加熱管５には全く
溶接等により固定されないため隣接する加熱管の
間の熱膨張差を拘束することなく、加熱管５の管
軸方向Ｂに自由に伸びることができ、各段の加熱
管５はそれぞれ、支持間隔片１３により垂直荷重
だけが支持され、それぞれ支持板１２へ伝達され
る。 To explain the above-mentioned configuration in more detail, as shown in FIG.
As shown in FIG. 6, which is a cross-sectional view of FIG. A supporting spacing piece 13 is provided below. In this case, the support spacing piece 13 is connected to the support plate 12.
Since it is not fixed to the heating tube 5 by welding or the like at all, it can freely extend in the tube axis direction B of the heating tube 5 without restricting the thermal expansion difference between adjacent heating tubes. Only the vertical load of the heating tubes 5 in each stage is supported by the support spacing pieces 13 and transmitted to the support plate 12, respectively.
第７図に示されるように、支持板１２に伝達さ
れた垂直荷重Ｗは上方に設けられた三角支持金物
１４を介して周壁冷却管７に伝達される。この場
合、支持板１２から伝達される荷重の伝達と、周
壁冷却管７により支持される力Ｆの位置がずれて
いるため、前記三角形金物１４部には回転力Ｍが
生じることになる。この三角形金物１４は前記回
転力Ｍが加熱管５および周壁冷却管７に伝達され
ないように設けられた支持金物である。すなわち
三角支持金物との連結はすべてピン連結１６，１
７として、発生する回転力Ｍを上下二段の連結リ
ンク１５により水平力Ｐに変換し、この水平力Ｐ
は周壁冷却管７の外部に設けられた集合部材１８
に伝達され、周壁冷却管７には水平力が伝達され
ないようになる。このため周壁管７には垂直力Ｆ
だけが伝達され、水平力Ｐや回転力Ｍ等の偏つた
力は全く作用しないため、全く安全である。集合
部材１８に伝達された水平力Ｐは連結金物１９を
介して縦バツクステイ２０に伝達され、上下に配
置された横バツクステイ２１−１，２１−２にそ
れぞれ伝達される。 As shown in FIG. 7, the vertical load W transmitted to the support plate 12 is transmitted to the peripheral wall cooling pipe 7 via the triangular support metal fitting 14 provided above. In this case, since the position of the load transmitted from the support plate 12 and the force F supported by the peripheral wall cooling pipe 7 are misaligned, a rotational force M is generated in the triangular hardware 14 portion. This triangular metal fitting 14 is a supporting metal fitting provided so that the rotational force M is not transmitted to the heating tube 5 and the peripheral cooling tube 7. In other words, all connections with the triangular support hardware are pin connections 16, 1.
7, the generated rotational force M is converted into horizontal force P by the upper and lower two-stage connecting link 15, and this horizontal force P
is a collective member 18 provided outside the peripheral wall cooling pipe 7
, and the horizontal force is no longer transmitted to the peripheral wall cooling pipe 7. Therefore, the vertical force F on the peripheral wall tube 7
It is completely safe because only the horizontal force P and the rotational force M are not applied. The horizontal force P transmitted to the collecting member 18 is transmitted to the vertical backstay 20 via the connecting hardware 19, and then to the horizontal backstays 21-1 and 21-2 arranged above and below, respectively.
この場合に、上下２段の支持リンク１５の間隔
L1と、横バツクステイの間隔L2とでは、一般に
L1よりL2が相当長いために支持リンク１５に作
用する水平力Ｐより横バツクステイ２１−１，２
１−２に作用する水平力p′−１，p′−２は相当小
さくなる。 In this case, the interval between the upper and lower support links 15
L 1 and the lateral backstay spacing L 2 are generally
Since L2 is considerably longer than L1 , the horizontal backstays 21-1 and 2 are more affected by the horizontal force P acting on the support link 15.
The horizontal forces p'-1 and p'-2 acting on 1-2 become considerably smaller.
横バツクステイ２１−１，２１−２に伝達され
た水平力は、それぞれ第７図の−および−
線による平面図である第８図および第９図に示
されるように、各側壁部においてΣp′−１，
Σp′−２として支持され、相対応する反対側から
の水平力Σp′−１，Σp′−２とそれぞれ釣合い、
安全に支持される。 The horizontal forces transmitted to the lateral backstays 21-1 and 21-2 are - and - in Fig. 7, respectively.
As shown in FIGS. 8 and 9, which are line plan views, Σp'-1,
Supported as Σp'-2, balanced with the corresponding horizontal forces Σp'-1 and Σp'-2 from the opposite side, respectively,
Safely supported.
このように本発明の支持装置によれば横行蛇行
する加熱管には全く支持金物を溶接固定してない
ため、加熱管を拘束することなく、加熱管の伸び
を自由にしながら支持することが可能となり、さ
らに加熱管への支持ラグ等の溶接がないため、加
熱管の製作が容易となる。また、本発明の支持装
置によれば、加熱管を支持した第１の支持金物を
連結ピンにて吊下げた第２の三角形の支持金物
が、周壁冷却管の連結部に接触して支持され、上
下２つの水平連結リンクでバツクステイに支持さ
れていることから、周壁冷却管には支持金物の水
平側辺から垂直力だけが伝達され、回転力や水平
力は水平連結リンクを介してバツクステイに伝達
されるので、回転力や水平力に対して耐力が小さ
い周壁冷却管を確実に保護することができる。し
たがつて、本発明によれば、低廉で信頼性の高い
横行蛇行する加熱管の支持装置が提供される。 As described above, according to the support device of the present invention, since no supporting hardware is welded and fixed to the heating tube that meanders sideways, it is possible to support the heating tube while allowing it to expand freely without restraining the heating tube. Furthermore, since there is no need to weld support lugs or the like to the heating tube, manufacturing of the heating tube becomes easier. Further, according to the support device of the present invention, the second triangular support hardware, which suspends the first support hardware that supported the heating tube by the connecting pin, is supported by contacting the connecting portion of the peripheral wall cooling pipe. , because it is supported by the backstay by two horizontal connecting links (upper and lower), only vertical force is transmitted from the horizontal side of the supporting metal to the surrounding wall cooling pipe, and rotational force and horizontal force are transmitted to the backstay via the horizontal connecting link. Therefore, it is possible to reliably protect the peripheral wall cooling pipe, which has a small resistance to rotational force and horizontal force. Therefore, according to the present invention, an inexpensive and highly reliable support device for a meandering heating tube is provided.
第１図は発電用ボイラの側断面図、第２図は従
来の加熱管群とその支持装置を示す立面図、第３
図および第４図はそれぞれ第２図の−および
−線による断面図、第５図は本発明による加
熱管支持装置の断面図、第６図は第５図の−
線による断面図、第７図は本発明の三角形の支持
金物の側面図、第８図および第９図はそれぞれ第
７図の−および−線による平面における
力の分布図である。
１……燃焼室、２−５……加熱管群、７……周
壁冷却管、１２……支持体、１３……支持間隔
片、１４……三角支持金物、１５……連結リン
ク、１６，１７……連結ピン、１８……集合金
物、１９……連結金物、２０……縦バツクステ
イ、２１……横バツクステイ。
Figure 1 is a side sectional view of a power generation boiler, Figure 2 is an elevation view showing a conventional heating tube group and its support device, and Figure 3 is a side sectional view of a power generation boiler.
5 and 4 are sectional views taken along lines - and - in FIG. 2, respectively, FIG. 5 is a sectional view of the heating tube support device according to the present invention, and FIG.
7 is a side view of the triangular support metal fitting of the present invention, and FIGS. 8 and 9 are force distribution diagrams in a plane taken along lines - and - in FIG. 7, respectively. DESCRIPTION OF SYMBOLS 1... Combustion chamber, 2-5... Heating tube group, 7... Surrounding wall cooling pipe, 12... Support body, 13... Support spacing piece, 14... Triangular support hardware, 15... Connection link, 16, 17... Connecting pin, 18... Collective hardware, 19... Connecting hardware, 20... Vertical back stay, 21... Horizontal back stay.
Claims (1)
いて、第１のはしご式の支持金物の各段に前記加
熱管を溶接することなく支持し、前記第１の支持
金物を連結ピンを介して第２の三角形の支持金物
に連結し、前記第２の支持金物の水平側辺を周壁
冷却管の連結部に接触せしめて支持し、前記第２
の支持金物の第１の支持金物連結点とは異なる点
で上下２つの水平連結リンクを連結ピンで連結
し、これら水平連結リンクをそれぞれバツクステ
イに支持したことを特徴とする、加熱管支持装
置。1. In a support device for supporting a heating tube that meanders sideways, the heating tube is supported without welding to each step of a first ladder-type support metal fitting, and the first support metal fitting is connected to a second support metal fitting via a connecting pin. is connected to a triangular supporting metal fitting, the horizontal side of the second supporting metal fitting is brought into contact with a connection part of the peripheral wall cooling pipe, and the second
A heating tube support device characterized in that two upper and lower horizontal connecting links are connected by a connecting pin at a point different from a first supporting hardware connection point of the supporting hardware, and each of these horizontal connecting links is supported by a back stay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3242881A JPS57148106A (en) | 1981-03-09 | 1981-03-09 | Heating tube supporting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3242881A JPS57148106A (en) | 1981-03-09 | 1981-03-09 | Heating tube supporting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57148106A JPS57148106A (en) | 1982-09-13 |
| JPS6333602B2 true JPS6333602B2 (en) | 1988-07-06 |
Family
ID=12358677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3242881A Granted JPS57148106A (en) | 1981-03-09 | 1981-03-09 | Heating tube supporting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57148106A (en) |
-
1981
- 1981-03-09 JP JP3242881A patent/JPS57148106A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57148106A (en) | 1982-09-13 |
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