CN106765051B - Superheater protection device with thermal expansion elimination function - Google Patents
Superheater protection device with thermal expansion elimination function Download PDFInfo
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- CN106765051B CN106765051B CN201710094993.7A CN201710094993A CN106765051B CN 106765051 B CN106765051 B CN 106765051B CN 201710094993 A CN201710094993 A CN 201710094993A CN 106765051 B CN106765051 B CN 106765051B
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- support
- fixedly connected
- steel plate
- superheater
- frame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
- F22G3/008—Protection of superheater elements, e.g. cooling superheater tubes during starting-up periods, water tube screens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
- F22G3/009—Connecting or sealing of superheater or reheater tubes with collectors or distributors
Abstract
The utility model provides a superheater protection device with eliminate thermal energy function, it relates to a superheater protection device, belongs to boiler structure technical field. The invention solves the problem that the welding seam at the joint of the header and the coiled pipe is easy to crack when the coiled pipe of the superheater in the existing boiler is arranged in the convection bank area. The boiler comprises a vertical support, a transverse support group and a pipe bundle fixing device, wherein the pipe bundle fixing device is supported and positioned by the transverse support group fixedly connected to a lower boiler barrel, the vertical support is of a closed cubic structure, a header and the joint of the header and a coiled pipe are positioned in the vertical support and sealed by the vertical support, and the coiled pipe is fixed by the pipe bundle fixing device. The invention is used for protecting the superheater.
Description
Technical Field
The invention relates to a superheater protection device, in particular to a superheater protection device with a function of eliminating thermal expansion, and belongs to the technical field of boiler structures.
Background
With the adjustment of energy structures, natural gas fired boilers are widely used, in which components are used to further heat steam from saturation temperature to superheat temperature. When the superheater coiled pipe is arranged in the convection bank area, flue gas transversely erodes the coiled pipe, and the coiled pipe can be along with vibrations, and superheater medium temperature is higher simultaneously, produces the thermal expansion along superheater header and coiled pipe axial direction, if can not eliminate vibration and inflation, long-term operation can lead to the welding seam fracture scheduling problem.
Disclosure of Invention
The invention aims to solve the problem that a welding seam at the joint of a header and a coiled pipe is easy to crack when the coiled pipe of the superheater in the existing boiler is arranged in a convection bank area, and further provides a superheater protection device with a function of eliminating thermal expansion.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a superheater protection device with a function of eliminating thermal expansion comprises a vertical support, a transverse support group and a tube bundle fixing device, wherein the tube bundle fixing device is supported and positioned through the transverse support group fixedly connected to a lower boiler barrel, the vertical support is of a closed cubic structure, a header and the joint of the header and a coiled pipe are located in the vertical support and sealed through the vertical support, and the coiled pipe is fixed through the tube bundle fixing device.
Further, vertical support includes locating rack, sealed support frame, upper end is sealed, the lower extreme is sealed and four side seal boards, and sealed support frame passes through locating rack and over heater body frame rigid coupling, sealed support frame is the cube structure, and four sides of sealed support frame are sealed through four side seal boards respectively, and sealed support frame and over heater body frame pass through four side seal board rigid couplings, and the collection case is located sealed support frame, and the lower extreme is sealed including the first steel sheet of horizontal rigid coupling in sealed support frame bottom, and the upper end is sealed including by last U type expansion joint and the second steel sheet of horizontal rigid coupling on sealed support frame upper portion under to, and first steel sheet, second steel sheet and U type expansion joint all suit are on the collection case and with collection case rigid coupling.
Furthermore, the sealing support frame comprises four vertically arranged angle steels and eight horizontally arranged channel steels, and the four angle steels and the eight channel steels are assembled into a cubic structure.
Furthermore, the upper end is fixedly connected with the lower end of a rectangular structure formed by four channel steel at the top end of the sealing support frame in a sealing mode, the lower end of the rectangular structure further comprises a seventh steel plate in a sealing mode, and the first steel plate and the seventh steel plate are fixedly connected with the upper end and the lower end of the rectangular structure formed by the four channel steel at the bottom end of the sealing support frame respectively.
Furthermore, the locating rack comprises a bottom plate and four vertically arranged channel steel fixedly connected between the sealing support frame and the bottom plate, and the bottom plate is fixedly connected with the superheater body frame.
Further, tube bank fixing device includes two sets of fixed subassemblies that set up side by side along tube bank length direction, and every group of fixed subassembly all includes that the level sets up the third steel sheet and the rigid coupling of group in the grid frame of third steel sheet top on horizontal support group, the grid frame includes the fourth steel sheet of a plurality of vertical settings and the round steel of a plurality of level settings, and a plurality of fourth steel sheets and a plurality of round steel rigid coupling form the grid frame that has a plurality of grids, and the tube bank alternates in a plurality of grids.
Further, each group of fixing components is lapped on the transverse support group.
Furthermore, the transverse support group comprises a first support and a second support, and the two groups of fixing assemblies are supported and positioned on the lower drum through the first support and the second support respectively.
Furthermore, the first support comprises a fifth steel plate and two first fixing frames with cross sections in T shapes, the two first fixing frames are respectively arranged at two ends below the fifth steel plate, and the fifth steel plate is horizontally and fixedly connected to the lower drum through the two first fixing frames.
Furthermore, the second support comprises a sixth steel plate and two second fixing frames with cross sections in a T shape, the two second fixing frames are respectively arranged at two ends below the sixth steel plate, and the sixth steel plate is horizontally and fixedly connected to the lower drum through the two second fixing frames.
Compared with the prior art, the invention has the following effects:
the coiled pipe is fixed by the pipe bundle fixing device, so that the flue gas disturbance caused when high-speed flue gas transversely washes the coiled pipe can be effectively eliminated, and the coiled pipe can freely expand along the transverse and axial directions; in the height direction, the superheater header and the joint of the superheater header and the coiled pipe are sealed through a vertical support, so that the upper end is free to stretch (axially stretch), the welding bead at the joint of the superheater header and the coiled pipe is prevented from cracking, and tight sealing is ensured.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a left side schematic view of FIG. 1;
FIG. 4 is a front view of the vertical support;
FIG. 5 is a left side schematic view of FIG. 4;
FIG. 6 is a top view of FIG. 4;
FIG. 7 is a schematic front view of a tube bundle retention device;
FIG. 8 is a left side schematic view of FIG. 7;
FIG. 9 is a schematic top view of a transverse stent assembly;
FIG. 10 is a front view of the first bracket;
FIG. 11 is a left side schematic view of FIG. 10;
FIG. 12 is a front view of the second bracket;
fig. 13 is a left side view of fig. 12.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 13, and the superheater protection device with function of eliminating thermal expansion includes a vertical bracket 1, a horizontal bracket set 2, and a tube bundle fixing device 3, where the tube bundle fixing device 3 is supported and positioned by the horizontal bracket set 2 fixedly connected to the lower drum 100, the vertical bracket 1 is a closed cubic structure, the header 101 and a connection point with the serpentine tube 102 are located in the vertical bracket 1 and sealed by the vertical bracket 1, and the serpentine tube 102 is fixed by the tube bundle fixing device 3.
One side of the vertical support 1, which is close to the tube bundle, is fixedly connected with a sealing frame, and the sealing frame is a rectangular frame formed by four steel plates and used for sealing the joint of the superheater and the boiler.
The second embodiment is as follows: referring to fig. 1 to 6, in the present embodiment, the vertical support 1 includes a positioning frame 1-1, a seal support frame 1-2, an upper seal 1-3, a lower seal 1-4, and four side seal plates 1-5, the seal support frame 1-2 is fixedly connected to the superheater body frame through the positioning frame 1-1, the seal support frame 1-2 is in a cubic structure, four side surfaces of the seal support frame 1-2 are respectively sealed by the four side seal plates 1-5, the seal support frame 1-2 is fixedly connected to the superheater body frame through the four side seal plates 1-5, the header 101 is located in the seal support frame 1-2, the lower seal 1-4 includes a first steel plate 1-41 horizontally fixedly connected to the bottom of the seal support frame 1-2, the upper seal 1-3 includes a U-shaped expansion joint 1-31 horizontally fixedly connected to the upper portion of the seal support frame 1-2 from top to bottom, and the upper seal 1-3 includes a U-shaped expansion joint 1-31 horizontally fixedly connected to the upper portion of the seal support frame 1-2 And the first steel plates 1-41, the second steel plates 1-32 and the U-shaped expansion joints 1-31 are sleeved on the header 101 and are fixedly connected with the header 101. By the design, the first steel plate 1-41 adopted by the lower end seal 1-4 is a steel plate with the thickness of 10mm, and mainly plays a supporting role; the four side sealing plates 1-5 are all steel plates with the thickness of 3mm and are used for sealing; the upper end seal 1-3 adopts U-shaped expansion joints 1-31 and second steel plates 1-32 for sealing, so that the thermal expansion of the header 101 is eliminated, and the axial extension of the upper part of the header 101 is ensured. Other components and connection relationships are the same as those in the first embodiment.
The third concrete implementation mode: in the embodiment, the sealing support frame 1-2 includes four vertically arranged angle steels and eight horizontally arranged channel steels, and the four angle steels and the eight channel steels are assembled into a cubic structure. By the design, the weight of the structure is reduced while the structural stability is ensured. Other components and connection relations are the same as the second concrete mode.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 6, the upper end seal 1-3 is fixedly connected to the lower end of a rectangular structure composed of four channel steels at the top end of the seal support frame 1-2, the lower end seal 1-4 further includes a seventh steel plate 1-42, and the first steel plate 1-41 and the seventh steel plate 1-42 are respectively fixedly connected to the upper end and the lower end of the rectangular structure composed of four channel steels at the bottom end of the seal support frame 1-2. By the design, the seventh steel plate 1-42 is thinner than the first steel plate 1-41, the first steel plate 1-41 plays a role in fixing and supporting, and the seventh steel plate 1-42 plays a role in sealing. Other components and connection relations are the same as those of the third embodiment.
The fifth concrete implementation mode: with reference to fig. 1 to 6, the positioning frame 1-1 includes a bottom plate 1-11 and four vertically disposed channel steels fixedly connected between the sealing support frame 1-2 and the bottom plate 1-11, and the bottom plate 1-11 is fixedly connected to the superheater body frame. By the design, the positioning frame 1-1 plays a role in positioning and supporting the sealing support frame 1-2. Other compositions and connection relations are the same as those of the second, third or fourth embodiment.
The sixth specific implementation mode is as follows: the embodiment is described by combining fig. 1-3 and fig. 7-9, the tube bundle fixing device 3 comprises two groups of fixing assemblies which are arranged side by side along the length direction of the tube bundle, each group of fixing assemblies comprises a third steel plate 3-1 which is horizontally arranged on the transverse support group 2 and a grid frame 3-2 fixedly connected above the third steel plate 3-1, the grid frame 3-2 comprises a plurality of vertically arranged fourth steel plates 3-21 and a plurality of horizontally arranged round steel 3-22, the plurality of fourth steel plates 3-21 and the plurality of round steel 3-22 are fixedly connected to form the grid frame 3-2 with a plurality of grids, and the tube bundle is inserted into the grids. By the design, the fourth steel plates 3-21 and the round steel plates 3-22 are arranged in a staggered mode and are inserted between the coiled pipes 102 to play a role in fixing and supporting, meanwhile, the coiled pipes 102 can be ensured to stretch along the axis direction, smoke disturbance caused when high-speed smoke transversely washes the coiled pipes 102 can be effectively eliminated, and the problems of vibration and thermal expansion are eliminated, so that the connecting welding beads are ensured not to crack, and tight sealing is ensured. Each grid is a rectangular structure, and the tube bundle can freely expand in the grid along the transverse direction and the axial direction. The fourth steel plates 3-21 on the two sides of the grid frame 3-2 can be angle steel, so that the stability of the fixing assembly is higher. Other components and connection relationships are the same as those in the first, second, third or fourth embodiment.
The seventh embodiment: in the embodiment described with reference to fig. 1 to 3 and fig. 7 to 9, each set of fixing components is overlapped on the transverse bracket set 2. So designed, guarantee the free slip of tube bank fixing device 3 on horizontal support group 2. Other components and connection relations are the same as those of the sixth embodiment.
The specific implementation mode is eight: referring to fig. 1 to 3 and fig. 7 to 13, the transverse support assembly 2 includes a first support 2-1 and a second support 2-2, and two sets of fixing assemblies are supported and positioned on the lower drum 100 by the first support 2-1 and the second support 2-2, respectively. Other components and connection relationships are the same as those in the seventh embodiment.
The specific implementation method nine: referring to fig. 1 to 13, the first bracket 2-1 includes a fifth steel plate 2-11 and two first fixing frames 2-12 with T-shaped cross sections, the two first fixing frames 2-12 are respectively disposed at two ends of the lower portion of the fifth steel plate 2-11, and the fifth steel plate 2-11 is horizontally fixed to the lower drum 100 through the two first fixing frames 2-12. By the design, the positioning accuracy of the tube bundle fixing device 3 is ensured, and the weight of the first support 2-1 is reduced. Other components and connection relationships are the same as those in the eighth embodiment.
The detailed implementation mode is ten: referring to fig. 1 to 13, the second bracket 2-2 includes a sixth steel plate 2-21 and two second fixing frames 2-22 with T-shaped cross sections, the two second fixing frames 2-22 are respectively disposed at two ends of the lower portion of the sixth steel plate 2-21, and the sixth steel plate 2-21 is horizontally fixed to the lower drum 100 through the two second fixing frames 2-22. By the design, the positioning accuracy of the tube bundle fixing device 3 is ensured, and the weight of the second bracket 2-2 is reduced. Other compositions and connection relations are the same as those of the eighth or ninth specific embodiment.
Claims (4)
1. A superheater protection device with a function of eliminating thermal expansion is characterized in that: the tube bundle fixing device comprises a vertical support (1), a transverse support group (2) and a tube bundle fixing device (3), wherein the vertical support (1) comprises a positioning frame (1-1), a sealing support frame (1-2), an upper end seal (1-3), a lower end seal (1-4) and four side sealing plates (1-5), the tube bundle fixing device (3) comprises two groups of fixing assemblies which are arranged side by side along the length direction of a tube bundle, each group of fixing assemblies comprises a third steel plate (3-1) which is horizontally arranged on the transverse support group (2) and a grid frame (3-2) which is fixedly connected above the third steel plate (3-1), the grid frame (3-2) comprises a plurality of vertically arranged fourth steel plates (3-21) and a plurality of horizontally arranged round steel (3-22), the transverse support group (2) comprises a first support (2-1) and a second support (2-2), the superheater comprises a first support (2-1) and a second support (2-2), wherein the first support (2-1) comprises a fifth steel plate (2-11) and two first fixing frames (2-12) with T-shaped cross sections, the second support (2-2) comprises a sixth steel plate (2-21) and two second fixing frames (2-22) with T-shaped cross sections, a tube bundle fixing device (3) is supported and positioned through a transverse support group (2) fixedly connected to a lower boiler barrel (100), the vertical support (1) is of a closed cubic structure, a header (101) and a joint of the header and a serpentine tube (102) are located in the vertical support (1) and sealed through the vertical support (1), the serpentine tube (102) is fixed through the tube bundle fixing device (3), the sealing support (1-2) is fixedly connected with a superheater body framework through a positioning frame (1-1), and the sealing support (1-2) is of a cubic structure, four side faces of a sealing support frame (1-2) are respectively sealed through four side sealing plates (1-5), the sealing support frame (1-2) is fixedly connected with a superheater body frame through the four side sealing plates (1-5), a header (101) is positioned in the sealing support frame (1-2), a lower end seal (1-4) comprises a first steel plate (1-41) horizontally and fixedly connected with the bottom of the sealing support frame (1-2), an upper end seal (1-3) comprises a U-shaped expansion joint (1-31) and a second steel plate (1-32) which are horizontally and fixedly connected with the upper part of the sealing support frame (1-2) from top to bottom, the first steel plate (1-41), the second steel plate (1-32) and the U-shaped expansion joint (1-31) are sleeved on the header (101) and fixedly connected with the header (101), a plurality of fourth steel plates (3-21) and a plurality of round steel (3-22) are fixedly connected to form a grid frame (3-2) with a plurality of grids, the tube bundle is inserted in the grids, each group of fixing components is lapped on the transverse support group (2), the two groups of fixing components are supported and positioned on the lower boiler barrel (100) through a first support (2-1) and a second support (2-2), the two first fixing frames (2-12) are respectively arranged at two ends below the fifth steel plates (2-11), the fifth steel plate (2-11) is horizontally and fixedly connected on the lower drum (100) through two first fixing frames (2-12), the two second fixing frames (2-22) are respectively arranged at two ends below the sixth steel plate (2-21), and the sixth steel plate (2-21) is horizontally and fixedly connected on the lower drum (100) through two second fixing frames (2-22).
2. A superheater protection device with function of eliminating thermal expansion as set forth in claim 1, wherein: the sealing support frame (1-2) comprises four vertically arranged angle steels and eight horizontally arranged channel steels, and the four angle steels and the eight channel steels are assembled into a cubic structure.
3. A superheater protection device with function of eliminating thermal expansion in accordance with claim 2, wherein: the upper end seal (1-3) is fixedly connected to the lower end of a rectangular structure formed by four channel steel at the top end of the seal support frame (1-2), the lower end seal (1-4) further comprises a seventh steel plate (1-42), and the first steel plate (1-41) and the seventh steel plate (1-42) are respectively fixedly connected to the upper end and the lower end of the rectangular structure formed by the four channel steel at the bottom end of the seal support frame (1-2).
4. A superheater protection apparatus with function of eliminating thermal expansion according to claim 2 or 3, wherein: the positioning frame (1-1) comprises a bottom plate (1-11) and four vertically arranged channel steels fixedly connected between the sealing support frame (1-2) and the bottom plate (1-11), and the bottom plate (1-11) is fixedly connected with the superheater body frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710094993.7A CN106765051B (en) | 2017-02-22 | 2017-02-22 | Superheater protection device with thermal expansion elimination function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710094993.7A CN106765051B (en) | 2017-02-22 | 2017-02-22 | Superheater protection device with thermal expansion elimination function |
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| CN106765051A CN106765051A (en) | 2017-05-31 |
| CN106765051B true CN106765051B (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB937301A (en) * | 1958-10-18 | 1963-09-18 | Holmes & Co Ltd W C | Improvements in or relating to heat exchangers |
| CN201697339U (en) * | 2010-06-24 | 2011-01-05 | 哈尔滨红光锅炉总厂有限责任公司 | Coal economizer of hot water boiler |
| CN202835327U (en) * | 2012-10-26 | 2013-03-27 | 哈尔滨红光锅炉总厂有限责任公司 | Double winding cast iron economizer for boiler |
| CN203784907U (en) * | 2013-12-31 | 2014-08-20 | 上海四方锅炉集团工程成套股份有限公司 | Superheater sealing device and gas boiler with same |
| CN203940411U (en) * | 2014-06-25 | 2014-11-12 | 伟明环保设备有限公司 | A kind of arrangement of convection superheater |
| CN105222122A (en) * | 2015-11-04 | 2016-01-06 | 郑向阳 | Be applied to the superheater of boiler |
| CN206459174U (en) * | 2017-02-22 | 2017-09-01 | 哈尔滨红光锅炉总厂有限责任公司 | It is a kind of that there is the superheater protection device for eliminating thermal expansion function |
-
2017
- 2017-02-22 CN CN201710094993.7A patent/CN106765051B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB937301A (en) * | 1958-10-18 | 1963-09-18 | Holmes & Co Ltd W C | Improvements in or relating to heat exchangers |
| CN201697339U (en) * | 2010-06-24 | 2011-01-05 | 哈尔滨红光锅炉总厂有限责任公司 | Coal economizer of hot water boiler |
| CN202835327U (en) * | 2012-10-26 | 2013-03-27 | 哈尔滨红光锅炉总厂有限责任公司 | Double winding cast iron economizer for boiler |
| CN203784907U (en) * | 2013-12-31 | 2014-08-20 | 上海四方锅炉集团工程成套股份有限公司 | Superheater sealing device and gas boiler with same |
| CN203940411U (en) * | 2014-06-25 | 2014-11-12 | 伟明环保设备有限公司 | A kind of arrangement of convection superheater |
| CN105222122A (en) * | 2015-11-04 | 2016-01-06 | 郑向阳 | Be applied to the superheater of boiler |
| CN206459174U (en) * | 2017-02-22 | 2017-09-01 | 哈尔滨红光锅炉总厂有限责任公司 | It is a kind of that there is the superheater protection device for eliminating thermal expansion function |
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