TWI744815B - Boiler plant - Google Patents
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- TWI744815B TWI744815B TW109107431A TW109107431A TWI744815B TW I744815 B TWI744815 B TW I744815B TW 109107431 A TW109107431 A TW 109107431A TW 109107431 A TW109107431 A TW 109107431A TW I744815 B TWI744815 B TW I744815B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/24—Supporting, suspending, or setting arrangements, e.g. heat shielding
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Abstract
提供可在地震發生時降低鍋爐本體之損傷的鍋爐裝置。鍋爐裝置,具備:鍋爐本體(1),其具有火爐(2)及位於火爐之後部的籠部(3);以及複數個鋼柱(12),其設在鍋爐本體的周圍,支撐鍋爐本體;其特徵為,具備:複數個背支架(20),其分別將火爐之左右的水壁(2a)與籠部之左右的籠壁(3a)予以連結,且於水平方向延伸;以及複數個連結構件(13a、15a),其將複數個背支架的各個與設在鍋爐本體之左右的複數個鋼柱予以連結。Provide boiler equipment that can reduce damage to the boiler body when an earthquake occurs. The boiler device includes: a boiler body (1), which has a furnace (2) and a cage part (3) located at the rear of the furnace; and a plurality of steel columns (12), which are arranged around the boiler body and support the boiler body; It is characterized by having: a plurality of back brackets (20), which respectively connect the left and right water walls (2a) of the furnace and the left and right cage walls (3a) of the cage, and extend in the horizontal direction; and a plurality of connections The members (13a, 15a) connect each of the plurality of back brackets with the plurality of steel columns provided on the left and right sides of the boiler body.
Description
本發明,關於鍋爐裝置,特別是關於鍋爐本體的支撐構造。The present invention relates to a boiler device, and particularly relates to a supporting structure of the boiler body.
正常來說,鍋爐本體具備火爐與籠部,該鍋爐本體,是透過吊桿而垂吊支撐於鋼樑。在地震發生時為了防止鍋爐本體晃動,鋼柱與鍋爐本體是透過抗震帶來連結。Normally, the boiler body is equipped with a furnace and a cage, and the boiler body is suspended and supported on a steel beam through a boom. In order to prevent the boiler body from shaking when an earthquake occurs, the steel column and the boiler body are connected by seismic belts.
且,作為謀求地震發生時之反應負重之降低的鍋爐之制震支撐構造體,例如於專利文獻1,記載有以連結裝置來連結鍋爐本體之火爐與籠部的構造。該連結裝置是構成為,對於火爐與籠部之熱所致之緩慢的相對位移來說產生微弱的抵抗力,或是不產生抵抗力,而是在對地震發生時之急遽的相對位移來說產生較大的抵抗力。
[先前技術文獻]
[專利文獻]In addition, as a vibration-damping support structure of a boiler that reduces the response load when an earthquake occurs, for example,
[專利文獻1] 日本專利第3181369號公報[Patent Document 1] Japanese Patent No. 3181369
[發明所欲解決之問題][The problem to be solved by the invention]
火爐,是以將在內部流動有鍋爐水的導熱管彼此以膜棒連接而構成之水壁所包圍的中空之箱型構造物,相對於此,籠部,設置有用來在該箱型構造物之中進行對流導熱的導熱管群。因此,火爐之每單位容積的質量(質量密度)與籠部的質量密度之間有很大的差距。具體來說,火爐的質量密度與籠部的質量密度相較之下非常地小。The stove is a hollow box-shaped structure surrounded by a water wall formed by connecting heat pipes with boiler water flowing inside with a membrane rod. On the other hand, the cage is provided for the box-shaped structure Among the heat pipe groups for convective heat conduction. Therefore, there is a big gap between the mass per unit volume of the furnace (mass density) and the mass density of the cage. Specifically, the mass density of the stove is very small compared to the mass density of the cage.
於是,在地震發生時,火爐與籠部會因應各自之剛性及質量來以固有的頻率振動,而例如在火爐與籠部之間所設置之副側壁或鼻部施加局部性的應力,有著損傷之虞。為了防止這問題,使火爐與籠部盡量以同相位來振動,使火爐及籠部的動作成為一體為佳。Therefore, when an earthquake occurs, the furnace and the cage will vibrate at a natural frequency according to their respective rigidity and mass. For example, the secondary side wall or the nose set between the furnace and the cage will be damaged by applying local stress. The fear. In order to prevent this problem, it is better to make the furnace and the cage vibrate in the same phase as possible, so that the movements of the furnace and the cage are integrated.
在專利文獻1,對於地震發生時之火爐與籠部的相位差,藉由連結裝置產生的拘束力,而可使火爐及籠部的動作接近成為一體,但是為了進一步降低鍋爐本體的損傷,還有改良的餘地。In
本發明,是有鑑於該情況而完成者,其目的在於提供可降低地震發生時之鍋爐本體之損傷的鍋爐裝置。 [解決問題之技術手段]The present invention was made in view of this situation, and its object is to provide a boiler device that can reduce damage to the boiler body when an earthquake occurs. [Technical means to solve the problem]
為了達成上述目的,代表性的本發明,是鍋爐裝置,具備:鍋爐本體,其具有火爐及位於前述火爐之後部的籠部;以及複數個鋼柱,其設在前述鍋爐本體的周圍,支撐前述鍋爐本體;其特徵為,具備:複數個背支架,其分別將前述火爐之左右的水壁與前述籠部之左右的籠壁予以連結,且於水平方向延伸;以及複數個連結構件,其將前述複數個背支架的各個與設在前述鍋爐本體之左右的前述複數個鋼柱予以連結。在此,前述複數個連結構件,是全部由抗震帶所構成,或是全部由阻尼器所構成,或是由抗震帶與阻尼器之組合所構成之任一者為佳。 [發明之效果]In order to achieve the above-mentioned object, a representative of the present invention is a boiler device, which includes: a boiler body having a furnace and a cage located at the rear of the furnace; and a plurality of steel columns arranged around the boiler body to support the foregoing Boiler body; characterized by having: a plurality of back brackets, which respectively connect the left and right water walls of the furnace and the left and right cage walls of the cage, and extend in the horizontal direction; and a plurality of connecting members, which will Each of the plurality of back supports is connected to the plurality of steel columns provided on the left and right sides of the boiler body. Here, it is preferable that the aforementioned plurality of connecting members are all composed of seismic belts, or all of them are composed of dampers, or are composed of a combination of seismic belts and dampers. [Effects of Invention]
根據本發明,可降低地震發生時之鍋爐本體的損傷。又,上述以外的課題、構造及效果,是由以下實施形態的說明而明瞭。According to the present invention, damage to the boiler body when an earthquake occurs can be reduced. In addition, the problems, structures, and effects other than the above are clarified from the description of the following embodiments.
以下,參照圖1~圖7來說明本發明之實施形態。圖1是表示本實施形態之鍋爐裝置之全體構造的側視圖,圖2是圖1所示之鍋爐裝置的俯視圖,圖3是表示圖1所示之鍋爐本體之側面與背支架之配置的圖,圖4是圖3所示之背支架的立體圖,圖5是圖3的V-V剖面圖,圖6是表示背支架之安裝機構之主要部的立體圖,圖7是表示圖6所示之安裝機構之主要部的縱剖面圖。又,以下的說明中,前後、左右、上下的各方向是如圖1、2所示地定義。Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 7. Fig. 1 is a side view showing the overall structure of the boiler device of this embodiment, Fig. 2 is a plan view of the boiler device shown in Fig. 1, and Fig. 3 is a diagram showing the arrangement of the side and back brackets of the boiler body shown in Fig. 1 4 is a perspective view of the back bracket shown in FIG. 3, FIG. 5 is a VV cross-sectional view of FIG. 3, FIG. 6 is a perspective view of the main part of the mounting mechanism of the back bracket, and FIG. 7 is a perspective view of the mounting mechanism shown in FIG. Longitudinal section view of the main parts. In addition, in the following description, the directions of front and rear, left and right, and up and down are defined as shown in FIGS. 1 and 2.
如圖1、2所示般,本實施形態的鍋爐裝置,具備:鍋爐本體1、設置成包圍鍋爐本體1並支撐鍋爐本體1的複數個鋼柱12。鍋爐本體1,透過複數個吊桿10而垂吊於在複數個鋼柱12之上部跨接的複數個鋼樑11。鍋爐本體1,具備:火爐2、籠部3、連結火爐2與籠部3的副側壁4。又,符號5為鼻部。火爐2,被水壁2a(參照圖6、7)所包圍,該水壁2a是將在內部流動有鍋爐水的導熱管7彼此以膜棒8來焊接固定而形成。籠部3亦被與水壁2a相同構造的籠壁3a所包圍。火爐2是由中空的箱型構造物所成,但籠部3是在中空的箱型構造物之中,設有用來進行對流導熱之未圖示的導熱管群。因此,火爐2之每單位容積的質量(質量密度)相較於籠部3的質量密度是非常小。As shown in FIGS. 1 and 2, the boiler device of the present embodiment includes a
火爐2,透過複數個抗震帶13b(第2抗震帶)而連結於設在火爐2之前方的複數個鋼柱12。更詳細來說,設在火爐2之水壁2a的背支架20與鋼柱12,是被抗震帶13b所連結。且,籠部3,是透過複數個抗震帶13c(第3抗震帶)而連結於設在籠部3之後方的複數個鋼柱12。更詳細來說,設在籠壁3a的背支架20與鋼柱12,是被抗震帶13c所連結。The
此外,使火爐2之左右的水壁2a與籠部3之左右的籠壁3a被於水平方向延伸的複數個背支架20所連結,該等之背支架20與設在鍋爐本體1之左右的複數個鋼柱12,是透過複數個抗震帶13a(第1抗震帶)來連結。抗震帶13a相當於本發明的「連結構件」。又,抗震帶13a、13b、13c的數量為適當即可。In addition, the
且,在火爐2與籠部3之間沿著前後方向設有複數個阻尼器15(第2阻尼器)。具體來說,阻尼器15,在上下方向設有兩個(參照圖1),在左右方向設有兩個(參照圖2),但並不過問該等之數量。又,各阻尼器15,其一端固定於安裝在水壁2a的背支架20,其另一端固定於安裝在籠壁3a的背支架20。在此,作為阻尼器15可使用油壓阻尼器或黏彈性阻尼器。藉由使用油壓阻尼器或黏彈性阻尼器,而容許火爐2與籠部3之熱變形所致之位移,且可限制地震所致之較大的位移。特別是,使用黏彈性阻尼器的話,在地震時會迅速地動作,而可限制火爐2與籠部3的相對位移,故較佳。In addition, a plurality of dampers 15 (second dampers) are provided between the
接著,詳細說明阻尼器15的安裝位置,上側的阻尼器15設在:比副側壁4之底部之與火爐2連接的部分還要下方的位置,且在鼻部5之彎曲部附近的高度位置(L2)。下側的阻尼器15設在:比上側的阻尼器15還要下方,且在可連接火爐2之胴體部與籠部3之胴體部的高度位置(L1)。如上述般,在高度位置L1與高度位置L2設置兩個阻尼器15,藉此可有效抑制地震時之火爐2與籠部3的相對變形。且,在左右方向,火爐2與鋼柱12之間的抗震帶13b、阻尼器15、籠部3與鋼柱12之間的抗震帶13c,在俯視觀看時是配置在往前後方向延伸之大致相同直線M1、M2上(參照圖2)。因此,在地震時可有效抑制鍋爐本體1對前後方向的振動。Next, the installation position of the
接著,針對背支架20進行說明。在鍋爐本體1的運轉時,水壁2a會承受水壁2a之內部的燃燒用空氣及燃燒氣體所產生的爐內壓。該爐內壓是以正負的形態來作用於水壁2a、副側壁4及籠壁3a,而使水壁2a、副側壁4及籠壁3a呈現膨脹或變形行為。在此,為了防止水壁2a、副側壁4及籠壁3a之過度的變形,如圖3、4所示般使背支架20具備在水壁2a、副側壁4及籠壁3a的外表面亦即鍋爐本體1的外表面。例如圖5所示般,以背支架20包圍火爐2的四方,藉此防止火爐2的變形。Next, the
接著,針對背支架20的安裝機構30參照圖6、7進行說明。背支架20是由H型鋼所成,透過安裝機構30而安裝於水壁2a或籠壁3a。適用於水壁2a的安裝機構30與適用於籠壁3a的安裝機構30為相同,故在此針對適用於水壁2a的安裝機構30進行說明。Next, the
安裝機構30,具備:一對支撐塊31,其沿著導熱管7的長度方向設置;銷32,其插通於一對支撐塊31;板狀的繫條33,其安裝在導熱管7上,被銷32給固定;縱板狀的支座34,其固定於繫條33;輔助支撐塊35,其在支座34的上下端部設置一對,且將背支架20支撐成對水平方向(圖6中的箭頭方向)滑動自如。背支架20是於水平方向滑動的構造,故在地震時亦可防止對鍋爐本體1施加較大的衝撃。The mounting
如此構成的鍋爐裝置,如圖2所示般,火爐2之左右的側壁亦即水壁2a與籠部3之左右的側壁亦即籠壁3a是以背支架20來連結,該背支架20與鋼柱12是以抗震帶13a(第1抗震帶)來連結,故火爐2與籠部3是藉由背支架20而一體化,使火爐2與籠部3在左右方向以相同動作來振動。換言之,火爐2與籠部3不會以各自固有的振動周期來振動。其結果,可迴避應力集中在火爐2與副側壁4的連接部之下部(圖1的A部),或是籠部3與副側壁4的連接部之下部(圖1的B部)的情況,可事先防止該部分之地震時的破損。The boiler device constructed in this way, as shown in FIG. 2, the left and right side walls of the
且,在火爐2與籠部3之間將阻尼器15以兩段配置在圖1的高度位置L1、L2,藉此可抑制兩者的相對位移。而且,使抗震帶13b、13c(第2抗震帶、第3抗震帶)與阻尼器15(第2阻尼器)之上下方向的位置成為相同高度位置L1、L2,左右方向的位置亦在俯視觀看時於同一直線(M1、M2)上,藉此可有效抑制火爐2與籠部3的相對變形。且,使阻尼器15成為黏彈性阻尼器,藉此提高地震時的反應性,可更有效抑制火爐2與籠部3的相對變形。In addition, the
又,推測因地震而會有地震力成分比起左右方向是在前後方向較大的案例發生,但在該案例,只要在圖2中增加設置在前後方向的阻尼器15之數量或是增大阻尼器15的容量即可。In addition, it is estimated that due to the earthquake, there will be cases where the seismic force component is larger in the front and rear directions than in the left and right directions. However, in this case, it is only necessary to increase the number of
(變形例1)
接著,針對上述實施形態的變形例1進行說明。圖8是變形例1之鍋爐裝置的俯視圖。在變形例1的鍋爐裝置,其特徵為,將左右之背支架20與鋼柱12予以連結的複數個連結構件,是將複數個抗震帶13a(第1抗震帶)與複數個阻尼器15a(第1阻尼器)予以組合來構成。又,阻尼器15a,與阻尼器15同樣地,為油壓阻尼器或黏彈性阻尼器。(Modification 1)
Next, the
推測因地震而會有地震力成分比起前後方向是在左右方向較大的案例發生。由於在籠部3側是在內部存在有重量物(橫放線圈),但在火爐2側於內部不存在有重量物,故地震發生時,籠部3側的地震力(慣性力)與火爐2側的地震力(慣性力)之關係,會成為籠部3側的地震力(慣性力)>火爐2側的地震力(慣性力)。作為對地震力的反作用力,換算成阻尼器15a(黏彈性阻尼器)所致之反作用力時,會成為籠部3側的反作用力>火爐2側的反作用力之關係。It is estimated that the seismic force component is larger in the left-right direction than the front-back direction due to the earthquake. Since there is a heavy object (horizontal coil) inside the
在這種案例,是將圖2所示之複數個抗震帶13a的一部分置換成阻尼器15a,藉此可成為適合承受左右方向之地震力成分的構造。具體來說,如圖8所示般,在火爐2的前側左右分別設置一個抗震帶13a,在火爐2的後側左右分別設置一個阻尼器15a,在籠部3的左右分別設置兩個阻尼器15a。如此構成的話,即使是左右方向之地震力成分較大的情況,亦可降低鍋爐本體1的損傷。In this case, a part of the plurality of
在此,亦可將所有抗震帶13a置換成阻尼器15a。亦即,將背支架20與鋼柱12予以連結的複數個連結構件,全部都以阻尼器15a來構成亦可。Here, all the
(變形例2)
接著,針對上述實施形態的變形例2進行說明。圖9是變形例2之鍋爐裝置的俯視圖。在變形例2的鍋爐裝置,設置在火爐2之左右之水壁2a的背支架20a與設置在籠部3之左右之籠壁3a的背支架20b是個別地構成這點與變形例1不同。即使是如此構成,亦可在地震發生之際降低鍋爐本體1的損傷。(Modification 2)
Next, the
又,本發明並不限定於上述實施形態,在不超脫本發明之主旨的範圍可有各種變形,記載於申請專利範圍之技術思想所包含的技術性事項全部都為本發明的對象。前述實施形態,是表示出適當的例子,但該技術領域中具有通常知識者,可由本說明書揭示的內容,來實現各種代替例、修正例、變形例或改良例,該等包含在附件的申請專利範圍所記載之技術性範圍。In addition, the present invention is not limited to the above-mentioned embodiments, and various modifications can be made without departing from the spirit of the present invention. All the technical matters included in the technical ideas described in the scope of the patent application are the objects of the present invention. The foregoing embodiments show appropriate examples, but those with ordinary knowledge in the technical field can implement various alternatives, amendments, modifications, or improvements based on the content disclosed in this specification. These applications are included in the appendix. The technical scope described in the patent scope.
例如,將本發明適用於圖10所示之屬於自然循環式的鼓式(過熱器垂吊式)鍋爐,或圖11所示之屬於直通型的超臨界鍋爐亦可。該等之情況亦同樣地,使阻尼器15設在高度位置L1、L2。又,在圖10、11中,圖1所示的背支架20、抗震帶13b、13c、鋼柱12的圖示被省略。For example, the present invention may be applied to the natural circulation type drum type (superheater hanging type) boiler shown in FIG. 10, or the straight-through type supercritical boiler shown in FIG. 11. In these cases, the
1:鍋爐本體
2:火爐
2a:水壁
3:籠部
3a:籠壁
4:副側壁
5:鼻部
7:導熱管
8:膜棒
10:吊桿
11:鋼樑
12:鋼柱
13a:抗震帶(第1抗震帶)
13b:抗震帶(第2抗震帶)
13c:抗震帶(第3抗震帶)
15:阻尼器(第2阻尼器)
15a:阻尼器(第1阻尼器)
20,20a,20b:背支架
30:安裝機構
31:支撐塊
32:銷
33:繫條
34:支座
35:輔助支撐塊1: Boiler body
2:
[圖1] 表示本實施形態之鍋爐裝置之全體構造的側視圖。 [圖2] 圖1所示之鍋爐裝置的俯視圖。 [圖3] 表示圖1所示之鍋爐本體之側面與背支架之配置的圖。 [圖4] 圖3所示之背支架的立體圖。 [圖5] 圖3的V-V剖面圖。 [圖6] 表示背支架之安裝機構之主要部的立體圖。 [圖7] 表示圖6所示之安裝機構之主要部的縱剖面圖。 [圖8] 變形例1之鍋爐裝置的俯視圖。 [圖9] 變形例2之鍋爐裝置的俯視圖。 [圖10] 表示將本發明適用於鼓式鍋爐之情況之鍋爐裝置之全體構造的側視圖。 [圖11] 表示將本發明適用於超臨界鍋爐之情況之鍋爐裝置之全體構造的側視圖。[Fig. 1] A side view showing the overall structure of the boiler device of this embodiment. [Figure 2] A top view of the boiler plant shown in Figure 1. [Fig. 3] A diagram showing the arrangement of the side and back brackets of the boiler body shown in Fig. 1. [Figure 4] The perspective view of the back bracket shown in Figure 3. [Fig. 5] Fig. 3 is a cross-sectional view taken along the line V-V. [Figure 6] A perspective view showing the main part of the mounting mechanism of the back bracket. [Fig. 7] A longitudinal sectional view showing the main part of the mounting mechanism shown in Fig. 6. [Fig. 8] A plan view of the boiler device of Modification Example 1. [Fig. 9] A plan view of the boiler device of Modification Example 2. [Fig. 10] A side view showing the overall structure of a boiler device when the present invention is applied to a drum boiler. [Fig. 11] A side view showing the overall structure of a boiler device when the present invention is applied to a supercritical boiler.
1:鍋爐本體 1: Boiler body
2:火爐 2: stove
2a:水壁 2a: water wall
3:籠部 3: Cage
3a:籠壁 3a: Cage wall
4:副側壁 4: Secondary side wall
5:鼻部 5: Nose
10:吊桿 10: boom
11:鋼樑 11: Steel beam
12:鋼柱 12: Steel column
13b:抗震帶(第2抗震帶) 13b: Seismic zone (Seismic zone 2)
13c:抗震帶(第3抗震帶) 13c: seismic belt (the third seismic belt)
15:阻尼器(第2阻尼器) 15: Damper (2nd damper)
20:背支架 20: back bracket
Claims (7)
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JP2019046360A JP6766202B2 (en) | 2019-03-13 | 2019-03-13 | Boiler device |
JP2019-046360 | 2019-03-13 |
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JP (1) | JP6766202B2 (en) |
MX (1) | MX2021010901A (en) |
TW (1) | TWI744815B (en) |
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WO2021124827A1 (en) * | 2019-12-20 | 2021-06-24 | 三菱パワー株式会社 | Earthquake monitoring system for boiler, and earthquake monitoring device for boiler |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6380405U (en) * | 1986-11-12 | 1988-05-27 | ||
JPH05322103A (en) * | 1992-05-21 | 1993-12-07 | Babcock Hitachi Kk | Vibration-damping supporting structure for boiler |
CN202719590U (en) * | 2012-05-23 | 2013-02-06 | 中国电力工程顾问集团华东电力设计院 | Suspension type boiler device |
JP2014156964A (en) * | 2013-02-15 | 2014-08-28 | Babcock-Hitachi Co Ltd | Friction type seismic tie for vibration control over boiler |
TW201736752A (en) * | 2016-04-12 | 2017-10-16 | 三菱日立電力系統股份有限公司 | Pipe structure and boiler system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4286549A (en) * | 1979-12-03 | 1981-09-01 | Foster Wheeler Energy Corporation | Steam generator support system |
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-
2020
- 2020-03-02 WO PCT/JP2020/008666 patent/WO2020184251A1/en active Application Filing
- 2020-03-02 MX MX2021010901A patent/MX2021010901A/en unknown
- 2020-03-06 TW TW109107431A patent/TWI744815B/en active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6380405U (en) * | 1986-11-12 | 1988-05-27 | ||
JPH05322103A (en) * | 1992-05-21 | 1993-12-07 | Babcock Hitachi Kk | Vibration-damping supporting structure for boiler |
CN202719590U (en) * | 2012-05-23 | 2013-02-06 | 中国电力工程顾问集团华东电力设计院 | Suspension type boiler device |
JP2014156964A (en) * | 2013-02-15 | 2014-08-28 | Babcock-Hitachi Co Ltd | Friction type seismic tie for vibration control over boiler |
TW201736752A (en) * | 2016-04-12 | 2017-10-16 | 三菱日立電力系統股份有限公司 | Pipe structure and boiler system |
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Publication number | Publication date |
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JP6766202B2 (en) | 2020-10-07 |
WO2020184251A1 (en) | 2020-09-17 |
MX2021010901A (en) | 2021-10-01 |
TW202100908A (en) | 2021-01-01 |
JP2020148394A (en) | 2020-09-17 |
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