CN215568527U

CN215568527U - High-temperature-resistant seamless steel tube convenient to connect for coal-fired thermal power generating unit

Info

Publication number: CN215568527U
Application number: CN202121925597.2U
Authority: CN
Inventors: 谢秀林
Original assignee: Zhejiang Xinhang Stainless Steel Co ltd
Current assignee: Zhejiang Xinhang Stainless Steel Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-01-18
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a high-temperature-resistant seamless steel tube convenient to connect for a coal-fired thermal power generating unit, which comprises an outer tube body and an inner tube body, wherein the section of the inner tube body is of a hexagonal structure, a cavity is formed in the inner tube body, heat-conducting silica gel is filled in the cavity, the outer side wall of the inner tube body is fixedly connected with one ends of a plurality of connecting rods, the other ends of the connecting rods are fixedly connected with the inner side wall of the outer tube body, the inner tube body is positioned at the central position in the outer tube body, the outer side wall of the outer tube body is fixedly connected with a plurality of radiating fins, and a plurality of reinforcing ribs are estimated in the cavity. The heat-conducting column has high heat exchange efficiency, and further improves the high-temperature resistance, in addition, when the heat-conducting column is connected with the heat-conducting column, the first connecting block is inserted into the groove, and the quick positioning is completed through the groove, so that the installation is more convenient, in addition, after the connection is completed, the convex part of the heat-conducting column can be inserted into the slot, the convex part of the heat-conducting column can contact the heat-conducting column, the heat-conducting quality of the connection is ensured, and the heat resistance of the connection is further improved.

Description

High-temperature-resistant seamless steel tube convenient to connect for coal-fired thermal power generating unit

Technical Field

The utility model relates to the technical field of seamless steel pipes, in particular to a high-temperature-resistant seamless steel pipe convenient to connect for a coal-fired thermal power generating unit.

Background

A coal-fired thermal power unit is mechanical equipment for converting chemical energy of fossil fuels such as coal and the like into electric energy, and mainly comprises a combustion system (taking a boiler as a core), a steam-water system (mainly comprising various pumps, a feed water heater, a condenser, a pipeline, a water wall and the like), an electric system (mainly comprising a turbine generator, a main transformer and the like), a control system and the like. The former two generate high-temperature high-pressure steam; the electrical system realizes the conversion from heat energy, mechanical energy to electric energy; the control system ensures that each system is operated safely, reasonably and economically. Coal-fired power generation also has the defects and shortcomings as a traditional power generation mode, for example, acidic gases such as SO2, NOX and the like discharged by direct combustion of coal are continuously increased, SO that the acid rain amount in China is increased, and dust pollution causes adverse effects on the life of people and the growth of plants. Therefore, the stroke of coal-fired power generation needs to be continuously improved, the power generation efficiency is improved by utilizing various technologies, the environmental pollution is reduced, for example, smoke dust is subjected to desulfurization and dust removal treatment or natural gas burning, a gas turbine is cooled by air, a supporting part needs to be installed in a coal-fired thermal power generating unit, a seamless steel pipe is generally adopted for supporting, the seamless steel pipe is formed by perforating whole round steel, and the steel pipe without a welding line on the surface is called as a seamless steel pipe. The seamless steel pipe may be hot-rolled, cold-drawn, extruded, pipe-jacked, etc., depending on the production method. The seamless steel pipe is divided into a round shape and a special shape according to the shape of a section, and the special-shaped pipe has various complex shapes such as a square shape, an oval shape, a triangular shape, a hexagonal shape, a melon seed shape, a star shape and a pipe with fins. The maximum diameter is up to 900mm and the minimum diameter is 4 mm. According to different purposes, a thick-wall seamless steel pipe and a thin-wall seamless steel pipe exist, the seamless steel pipe used in the coal-fired thermal power generating unit has higher requirement on high temperature resistance, a plurality of seamless steel pipes are generally required to be connected in the actual use process, and the existing connection mode is not convenient enough.

To this end, the chinese utility model patent that the publication number is CN209557826U discloses a seamless steel pipe convenient to connect, and this seamless steel pipe includes the steel pipe body, and the one end of steel pipe body is equipped with the bulge loop, and the other end inboard of steel pipe body is equipped with the notch ring, and the cover is equipped with the welding material circle on the lateral wall of bulge loop, is equipped with the sheath between two adjacent steel pipe bodies that set up side by side. According to the utility model, the convex ring and the concave ring which can be mutually clamped and matched are respectively arranged at the two ends of the steel pipe body, the welding ring is sleeved on the convex ring, when the two steel pipe bodies are clamped and matched, the welding ring is melted for welding and sealing, the welding contact area is greatly increased, the connection stability and the connection tightness are improved, meanwhile, the clamping rings are respectively arranged at the two ends of the steel pipe body, and the sheath is arranged at the connection position of the two steel pipe bodies, so that the sealing property of the connection position of the steel pipes can be further improved, the welding seam can be shielded, and the attractiveness is improved.

The seamless steel pipe is simple in connection, but the heat resistance of the seamless steel pipe is poor, the connecting part is connected in a threaded mode, and the sealing ring is arranged, so that the connecting parts of the seamless steel pipe are not in contact, and the heat resistance of the connecting part is poor.

Therefore, a high-temperature-resistant seamless steel pipe convenient to connect for a coal-fired thermal power generating unit is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-temperature-resistant seamless steel tube for a coal-fired thermal power generating unit, which is convenient to connect and aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a coal-fired thermal power generating unit is with high temperature resistant seamless steel pipe convenient to connect, includes outer body and interior body, interior body cross-section is the hexagon structure, set up the cavity in the interior body, pack heat conduction silica gel in the cavity, a plurality of connecting rod one end of interior body lateral wall rigid coupling, it is a plurality of the outer body inside wall of connecting rod other end rigid coupling, interior body is located outer body inside central point and puts, a plurality of fin of outer body lateral wall rigid coupling, estimate a plurality of strengthening ribs in the cavity, the strengthening rib cross-section is the I shape structure.

Preferably, one end of the outer tube body is fixedly connected with a first connecting head assembly, the other end of the outer tube body is fixedly connected with a second connecting head assembly, the first connecting head assembly comprises a first connecting pipe fixedly connected to one end of the outer tube body, the first connecting pipe and the outer tube body are of an integrated structure, the inner diameter of the first connecting pipe is consistent with that of the outer tube body, four first connecting blocks are uniformly and fixedly connected to the outer side wall of one end, away from the outer tube body, of the first connecting pipe, and first through holes are formed in the first connecting blocks;

preferably, the second connecting head subassembly includes the second connecting pipe of rigid coupling at outer tube body tip, second connecting pipe and outer tube body formula structure as an organic whole, second connecting pipe external diameter is unanimous with outer tube body external diameter, second connecting pipe internal diameter is unanimous with first connecting pipe external diameter, the second connecting pipe is close to four second connecting blocks of outer tube body one end lateral wall corresponding four first connecting block position rigid couplings, set up the second through-hole on the second connecting block, four flutings are seted up to four second connecting block positions that second connecting pipe lateral wall corresponds, the fluting width is unanimous with first connecting block width.

Preferably, a plurality of heat conduction columns are fixedly connected in the inner tube body, a plurality of heat conduction columns are fixedly connected to one ends, close to the first connector assemblies, of the heat conduction columns, and the heat conduction column protrusions and the heat conduction columns are of an integrated structure.

Preferably, a plurality of slots are formed in the position, corresponding to the plurality of heat conducting columns, of one end, close to the second connecting head assembly, of the inner pipe body, and the slots are of an opening structure and are communicated with the end portions of the heat conducting columns.

Compared with the prior art, the utility model has the beneficial effects that:

the heat-conducting column has high heat exchange efficiency, and further improves the high-temperature resistance, in addition, when the heat-conducting column is connected with the heat-conducting column, the first connecting block is inserted into the groove, and the quick positioning is completed through the groove, so that the installation is more convenient, in addition, after the connection is completed, the convex part of the heat-conducting column can be inserted into the slot, the convex part of the heat-conducting column can contact the heat-conducting column, the heat-conducting quality of the connection is ensured, and the heat resistance of the connection is further improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the explosive structure of the present invention;

FIG. 3 is an enlarged structural view of the interconnection of the present invention;

FIG. 4 is an enlarged structural diagram of the cross-sectional structure of the present invention.

In the figure: 1. an outer tubular body; 2. an inner tube body; 3. a first connector assembly; 4. a second connector assembly; 5. fixing the bolt; 11. a heat sink; 12. a connecting rod; 21. a cavity; 22. heat conducting silica gel; 23. a heat-conducting column; 24. reinforcing ribs; 25. a slot; 26. a heat-conducting post projection; 31. a first connecting pipe; 32. a first connection block; 33. a first through hole; 41. a second connecting pipe; 42. grooving; 43. a second connecting block; 44. a second via.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a coal-fired thermal power generating unit is with high temperature resistant seamless steel pipe convenient to connect, includes outer body 1 and interior body 2, and interior body 2 cross-section is the hexagon structure, sets up cavity 21 in interior body 2, and cavity 21 intussuseption is filled with heat conduction silica gel 22.

Referring to fig. 2 and 4, an outer side wall of the inner tube 2 is fixedly connected to one end of a plurality of connecting rods 12, the other end of the plurality of connecting rods 12 is fixedly connected to an inner side wall of the outer tube 1, the inner tube 2 is located at a central position inside the outer tube 1, the outer side wall of the outer tube 1 is fixedly connected to a plurality of radiating fins 11, a plurality of reinforcing ribs 24 are estimated in the cavity 21, the cross sections of the reinforcing ribs 24 are i-shaped, and a plurality of heat conducting columns 23 are fixedly connected to the inner tube 2.

Referring to fig. 1-3, one end of the outer tube 1 is fixedly connected with a first connecting assembly 3, the other end of the outer tube 1 is fixedly connected with a second connecting assembly 4, the first connecting assembly 3 includes a first connecting tube 31 fixedly connected to one end of the outer tube 1, the first connecting tube 31 and the outer tube 1 are of an integral structure, the inner diameter of the first connecting tube 31 is identical to the inner diameter of the outer tube 1, the outer side wall of one end of the first connecting tube 31, which is far away from the outer tube 1, is fixedly connected with four first connecting blocks 32, a first through hole 33 is formed on the first connecting block 32, the second connecting assembly 4 includes a second connecting tube 41 fixedly connected to the end of the outer tube 1, the second connecting tube 41 and the outer tube 1 are of an integral structure, the outer diameter of the second connecting tube 41 is identical to the outer diameter of the outer tube 1, the inner diameter of the second connecting tube 41 is identical to the outer diameter of the first connecting tube 31, the outer side wall of one end of the second connecting tube 41, which is near the outer tube 1, is fixedly connected with four second connecting blocks 43 corresponding to the positions of the four first connecting blocks 32, the second connecting block 43 is provided with a second through hole 44, the outer side wall of the second connecting pipe 41 is provided with four open grooves 42 corresponding to the positions of the four second connecting blocks 43, the width of the open groove 42 is consistent with that of the first connecting block 32, when two connecting devices are required to be connected, the first connecting head assemblies 3 and the second connecting head assemblies 4 at two ends of two seamless steel pipes are only required to be mutually inserted, so that the first connecting head assemblies 3 are inserted into the inner sides of the second connecting head assemblies 4, the first connecting block 32 is inserted into the open groove 42, the first connecting block 32 is in contact with the second connecting block 43 at the moment, and the fixing bolts 5 are only used to penetrate through the first through holes 33 on the first connecting block 32 and the second through holes 44 on the second connecting block 43 to fix, so that the installation is completed.

Referring to fig. 1-2, a plurality of heat-conducting pillars 23 are fixedly connected to one end of the first connector assembly 3, and the heat-conducting pillar protrusion 26 and the heat-conducting pillar 23 are integrated.

Referring to fig. 3, a plurality of slots 25 are formed in one end of the inner tube 2 close to the second connector assembly 4 corresponding to the positions of the plurality of heat-conducting pillars 23, the slots 25 are open at one end close to the second connector assembly 4 and are communicated with the ends of the heat-conducting pillars 23, when the inner tube and the second connector assembly are connected with each other, the first connecting block 32 is inserted into the slot 42, and the slot 42 is used for completing quick positioning, so that the installation is more convenient, in addition, after the connection is completed, the heat-conducting pillar protrusions 26 are inserted into the slots 25, the heat-conducting pillar protrusions 26 contact the heat-conducting pillars 23, the heat-conducting quality of the connection is ensured, and further, the heat-resisting performance of the connection is improved.

The working principle is as follows: the utility model arranges a plurality of radiating fins 11 outside the outer tube body 1, increases the radiating area, and simultaneously leads the heat on the outer tube body 1 to the inner tube body 2 through the connecting rod 12, and discharges the heat through the heat-conducting silica gel 22 and the heat-conducting column 23, on one hand, the heat exchange efficiency is improved, and in addition, the heat-resisting pressure of the outer tube body 1 is lightened, and further the whole heat-resisting performance is improved, when two invention are needed to be connected, only the first connector component 3 and the second connector component 4 at two ends of two seamless steel tubes are needed to be mutually inserted, so that the first connector component 3 is inserted inside the second connector component 4, and the first connecting block 32 is inserted into the groove 42, at the moment, the first connecting block 32 is contacted with the second connecting block 43, and can be fixed only by using the fixing bolt 5 to penetrate through the first through hole 33 on the first connecting block 32 and the second through hole 44 on the second connecting block 43, in addition, after the connection is finished, the heat conduction column protrusion part 26 can be inserted into the slot 25 and can contact the heat conduction column 23, so that the heat conduction quality of the connection part is ensured, and the heat resistance of the connection part is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a coal-fired thermal power generating unit is with high temperature resistant seamless steel pipe convenient to connect, includes outer body (1) and interior body (2), its characterized in that:

one end of the outer pipe body (1) is fixedly connected with a first connecting component (3), the other end of the outer pipe body (1) is fixedly connected with a second connecting component (4), the first connecting component (3) comprises a first connecting pipe (31) fixedly connected to one end of the outer pipe body (1), the first connecting pipe (31) and the outer pipe body (1) are of an integrated structure, the inner diameter of the first connecting pipe (31) is consistent with that of the outer pipe body (1), the outer side wall of one end, far away from the outer pipe body (1), of the first connecting pipe (31) is fixedly connected with four first connecting blocks (32) uniformly, and first through holes (33) are formed in the first connecting blocks (32);

second connecting head subassembly (4) are including second connecting pipe (41) of rigid coupling at outer body (1) tip, second connecting pipe (41) and outer body (1) formula structure as an organic whole, second connecting pipe (41) external diameter is unanimous with outer body (1) external diameter, second connecting pipe (41) internal diameter is unanimous with first connecting pipe (31) external diameter, second connecting pipe (41) are close to four first connecting block (32) position rigid coupling four second connecting blocks (43) of outer body (1) one end lateral wall correspondence, set up second through-hole (44) on second connecting block (43), four fluting (42) are seted up to four second connecting block (43) positions of second connecting pipe (41) lateral wall correspondence, fluting (42) width is unanimous with first connecting block (32) width.

2. The high-temperature-resistant seamless steel tube convenient to connect for the coal-fired thermal power generating unit according to claim 1, characterized in that: the cross section of the inner tube body (2) is of a hexagonal structure, a cavity (21) is formed in the inner tube body (2), and heat-conducting silica gel (22) is filled in the cavity (21).

3. The high-temperature-resistant seamless steel tube convenient to connect for the coal-fired thermal power generating unit according to claim 1, characterized in that: the outer side wall of the inner pipe body (2) is fixedly connected with one ends of a plurality of connecting rods (12), the other ends of the connecting rods (12) are fixedly connected with the inner side wall of the outer pipe body (1), the inner pipe body (2) is located in the center of the inner part of the outer pipe body (1), and the outer side wall of the outer pipe body (1) is fixedly connected with a plurality of radiating fins (11).

4. The high-temperature-resistant seamless steel tube convenient to connect for the coal-fired thermal power generating unit according to claim 1, characterized in that: a plurality of heat conduction columns (23) are fixedly connected in the inner pipe body (2), a plurality of heat conduction columns (23) are fixedly connected with a plurality of heat conduction column protruding parts (26) at one end close to the first connector component (3), and the heat conduction column protruding parts (26) and the heat conduction columns (23) are of an integrated structure.

5. The high-temperature-resistant seamless steel tube convenient to connect for the coal-fired thermal power generating unit according to claim 4, characterized in that: a plurality of slots (25) are formed in the positions, close to one end of the second connecting head assembly (4), of the inner tube body (2) corresponding to the plurality of heat conducting columns (23), and one end, close to the second connecting head assembly (4), of each slot (25) is of an open structure, and the other end of each slot is communicated with the end portion of each heat conducting column (23).

6. The high-temperature-resistant seamless steel tube convenient to connect for the coal-fired thermal power generating unit according to claim 2, characterized in that: a plurality of reinforcing ribs (24) are estimated in the cavity (21), and the cross sections of the reinforcing ribs (24) are in I-shaped structures.