An auxiliary steam and water recovery device for a steam turbine

Abstract

The present invention belongs to the field of steam equipment, and specifically relates to an auxiliary steam-water recovery device for a steam turbine, which includes a heat absorption cover, a sealing ring, a first fastener, and a heat recovery unit; a sealing ring is sleeved at the opening of the heat absorption cover; the sealing ring is fixedly connected to the opening of the heat absorption cover through the first fastener; a heat recovery unit is arranged inside the heat absorption cover; the heat recovery unit includes a heat absorption plate, a first joint, and a left upper pipe; a plurality of heat absorption plates are fixedly connected inside the heat absorption cover at equal intervals; a first joint is fixedly connected to the heat absorption cover in a sealed communication manner; the left upper pipe is connected and inserted into the first joint; by injecting a heat-conducting liquid into the second heat-insulating pipe and the first heat-insulating pipe, the heat of the boiler can be transferred to the heat-conducting liquid through the heat absorption cover, and then transferred to the second heat-insulating pipe and the first heat-insulating pipe through the heat-conducting liquid, so as to heat the outer surface of the steam extraction pipeline, thereby reducing the heat dissipation of the steam extraction pipeline and saving heat.

Description

Technical Field

[0001] The present invention relates to the field of steam equipment, and more particularly to an auxiliary steam-water recovery device for a steam turbine. Background Art

[0002] A steam turbine refers to a device in which high-temperature and high-pressure steam passes through fixed nozzles to jet onto evenly fixed fan blades on a rotor, thereby driving the fan blades and the rotor to rotate, and thus realizing the function of the rotor to do work externally.

[0003] The steam-water that has done work in the steam turbine returns to the boiler through the extraction pipeline for reheating to form high-temperature and high-pressure steam, and then the high-temperature and high-pressure steam is reused for doing work. However, the steam flowing in the pipeline will naturally dissipate heat through the pipeline, causing more heat loss during the transmission process, thus wasting heat. Therefore, an auxiliary steam-water recovery device for a steam turbine is proposed to solve the above problems. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art and solve the problem that the steam flowing in the pipeline will naturally dissipate heat through the pipeline, resulting in more heat loss during the transmission process and thus wasting heat, the present invention proposes an auxiliary steam-water recovery device for a steam turbine.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: An auxiliary steam-water recovery device for a steam turbine of the present invention includes a heat absorption cover, a sealing ring, a first fastener, and a heat recovery unit; a sealing ring is sleeved at the opening of the heat absorption cover; the sealing ring is fixedly connected to the opening of the heat absorption cover through the first fastener; a heat recovery unit is arranged inside the heat absorption cover; the heat recovery unit includes a heat absorption plate, a first joint, and a left upper pipe; a plurality of heat absorption plates are fixedly connected inside the heat absorption cover at equal intervals; a first joint is fixedly connected to the heat absorption cover in a sealed manner; a left upper pipe is connected and inserted into the first joint; a second joint is fixedly connected to the left upper pipe; the second joint is fixedly connected to a first heat preservation pipe; a fourth joint is fixedly connected to the first heat preservation pipe; a left lower pipe is fixedly connected and communicated inside the fourth joint; a third joint is fixedly connected to the left lower pipe; the third joint is fixedly connected to the heat absorption cover; a right lower pipe is fixedly connected to the third joint; a fifth joint is fixedly connected to the right lower pipe; the fifth joint is fixedly connected to a second heat preservation pipe; a sixth joint is fixedly connected to the second heat preservation pipe; a right upper pipe is fixedly connected and communicated with the first joint. During operation, by injecting a heat-conducting liquid into the second heat preservation pipe and the first heat preservation pipe, the heat of the boiler can be transferred to the heat-conducting liquid through the heat absorption cover, and then transferred to the second heat preservation pipe and the first heat preservation pipe through the heat-conducting liquid, so as to heat the outer surface of the extraction pipeline, thereby reducing the heat dissipation of the extraction pipeline and saving heat.

[0006] Preferably, the second heat preservation pipe is symmetrically and fixedly connected with first connecting plates up and down; a second connecting plate is inserted into the first connecting plate. During operation, due to the horizontal insertion relationship between the first connecting plate and the second connecting plate, the second heat preservation pipe and the first heat preservation pipe can be horizontally buckled and installed on the extraction steam pipeline.

[0007] Preferably, a nut is threadedly sleeved on the first connecting plate; a guiding shaft is threadedly inserted into the first connecting plate; a plurality of hoisting grooves are formed in the second connecting plate. During operation, through the hoisting grooves, it is convenient to use bolts and hooks for fixing and moving. The first connecting plate and the second connecting plate can be fixed through the nut, and the guiding shaft can be conveniently inserted into the second connecting plate horizontally to assist in completing the installation.

[0008] Preferably, a first heat insulation pipe and a second heat insulation pipe are inserted between the first heat preservation pipe and the second heat preservation pipe; the positions of the first heat insulation pipe and the second heat insulation pipe are symmetric up and down. During operation, due to the misaligned socket connection between the first heat insulation pipe and the second heat insulation pipe and the first heat preservation pipe and the second heat preservation pipe, the connection gaps between the first heat preservation pipe and the second heat preservation pipe and the connection gaps between the first heat insulation pipe and the second heat insulation pipe are misaligned, thereby reducing heat loss.

[0009] Preferably, buckling grooves are symmetrically formed on the first heat insulation pipe and the second heat insulation pipe; magnetic blocks are fixedly connected in the buckling grooves. During operation, through the two magnetic blocks, the first heat insulation pipe and the second heat insulation pipe can be magnetically fixed on the extraction steam pipeline, thereby facilitating installation and disassembly.

[0010] Preferably, second fasteners are symmetrically and threadedly fixed on the heat absorption cover; a connecting frame is sleeved on the second fasteners; a third fastener is inserted through a hole in the connecting frame. During operation, by cooperating with the connecting frame through the third fastener, the heat absorption cover can be fixed on the side of the boiler, so as to perform heat preservation transmission on the heat dissipated by the boiler, and thus reuse the heat dissipated by the boiler.

[0011] Preferably, first heat insulation sheets are symmetrically bonded on the first heat insulation pipe and the second heat insulation pipe; second heat insulation sheets are symmetrically bonded on the first heat insulation sheets. During operation, through the two layers of second heat insulation sheets and the first heat insulation sheets, the heat of the extraction steam pipeline can be kept inside the extraction steam pipeline, reducing heat dissipation, and thus saving heat.

[0012] Preferably, third heat insulation sheets are symmetrically bonded on the second heat insulation sheets; the first heat insulation sheets, the second heat insulation sheets and the third heat insulation sheets are all made of phenolic foam plastics. During operation, through the first heat insulation sheets, the second heat insulation sheets and the third heat insulation sheets made of phenolic foam plastics, the heat of the extraction steam pipeline can be kept inside the extraction steam pipeline, thereby reducing the heat dissipation of the extraction steam pipeline.

[0013] The advantages of the present invention are as follows:

[0014] 1. By injecting heat-conducting liquid into the second heat-insulating pipe and the first heat-insulating pipe, the heat of the boiler can be transferred to the heat-conducting liquid through the heat-absorbing cover, and then transferred to the second heat-insulating pipe and the first heat-insulating pipe through the heat-conducting liquid, so as to heat the outer surface of the steam extraction pipe, reduce the heat dissipation of the steam extraction pipe, and save heat.

[0015] 2. By the misaligned socket connection of the first heat-insulating pipe and the second heat-insulating pipe with the first heat-insulating pipe and the second heat-insulating pipe, the connection gaps between the first heat-insulating pipe and the second heat-insulating pipe and the connection gaps between the first heat-insulating pipe and the second heat-insulating pipe are misaligned, thereby reducing heat loss; through two magnetic blocks, the first heat-insulating pipe and the second heat-insulating pipe can be magnetically fixed on the steam extraction pipe, which is convenient for installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a front view sectional structure schematic diagram of the recovery device in Embodiment 1;

[0018] Figure 2 For Figure 1 the enlarged structure schematic diagram at A in

[0019] Figure 3 For Figure 1 the enlarged structure schematic diagram at B in

[0020] Figure 4 It is a three-dimensional structure schematic diagram of the first heat-insulating pipe in Embodiment 1;

[0021] Figure 5 It is a front view sectional structure schematic diagram of the recovery device in Embodiment 2.

[0022] In the figure: 1, heat absorption cover; 2, sealing ring; 3, first fastener; 4, second fastener; 5, connecting frame; 6, third fastener; 7, heat absorption plate; 8, first joint; 9, upper left pipe; 10, second joint; 11, first heat preservation pipe; 12, third joint; 13, lower left pipe; 14, fourth joint; 15, second heat preservation pipe; 16, lower right pipe; 17, fifth joint; 18, upper right pipe; 19, sixth joint; 20, first connecting plate; 21, nut; 22, guiding shaft; 23, second connecting plate; 24, hoisting groove; 25, first heat insulation pipe; 26, second heat insulation pipe; 27, buckling groove; 28, magnetic block; 29, first heat insulation sheet; 30, second heat insulation sheet; 31, third heat insulation sheet; 32, first handle; 33, second handle. Specific implementation mode

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1

[0025] Please refer to Figures 1-4As shown in the figure, an auxiliary steam-water recovery device for a steam turbine includes a heat absorption cover 1, a sealing ring 2, a first fastener 3, and a heat recovery unit. A sealing ring 2 is sleeved at the opening of the heat absorption cover 1. The sealing ring 2 is fixedly connected to the opening of the heat absorption cover 1 through the first fastener 3. A heat recovery unit is provided inside the heat absorption cover 1. The heat recovery unit includes a heat absorption plate 7, a first joint 8, and a left upper pipe 9. A plurality of heat absorption plates 7 are fixedly connected inside the heat absorption cover 1 at equal intervals. A first joint 8 is fixedly connected to the heat absorption cover 1 in a sealed and communicating manner. A left upper pipe 9 is connected and inserted into the first joint 8. A second joint 10 is fixedly connected to the left upper pipe 9. The second joint 10 is fixedly connected and communicated with a first heat preservation pipe 11. A fourth joint 14 is fixedly connected to the first heat preservation pipe 11. A left lower pipe 13 is fixedly connected and communicated inside the fourth joint 14. A third joint 12 is fixedly connected to the left lower pipe 13. The third joint 12 is fixedly connected and communicated with the heat absorption cover 1. A right lower pipe 16 is fixedly connected to the third joint 12. A fifth joint 17 is fixedly connected to the right lower pipe 16. The fifth joint 17 is fixedly connected and communicated with a second heat preservation pipe 15. A sixth joint 19 is fixedly connected to the second heat preservation pipe 15. A right upper pipe 18 is fixedly connected to the sixth joint 19. The right upper pipe 18 is fixedly connected and communicated with the first joint 8. During operation, by injecting a heat-conducting liquid into the second heat preservation pipe 15 and the first heat preservation pipe 11, the heat of the boiler can be transferred to the heat-conducting liquid through the heat absorption cover 1, and then transferred to the second heat preservation pipe 15 and the first heat preservation pipe 11 through the heat-conducting liquid, so as to heat the outer surface of the steam extraction pipe, thereby reducing the heat dissipation of the steam extraction pipe and saving heat.

[0026] First connecting plates 20 are fixedly connected to the upper and lower sides of the second heat preservation pipe 15 symmetrically. A second connecting plate 23 is inserted into the first connecting plates 20. During operation, due to the horizontal insertion relationship between the first connecting plates 20 and the second connecting plate 23, the second heat preservation pipe 15 and the first heat preservation pipe 11 can be horizontally buckled and installed on the steam extraction pipe.

[0027] Nuts 21 are threadedly sleeved on the first connecting plates 20. Guide shafts 22 are threadedly inserted into the first connecting plates 20. A plurality of lifting grooves 24 are formed on the second connecting plate 23. During operation, through the lifting grooves 24, it is convenient to use bolts and hooks for fixing and moving. The first connecting plates 20 and the second connecting plate 23 can be fixed through the nuts 21. The guide shafts 22 can be conveniently inserted into the second connecting plate 23 horizontally to assist in completing the installation.

[0028] A first heat insulation pipe 11 and a second heat insulation pipe 15 are inserted with a first heat insulation pipe 25 and a second heat insulation pipe 26; the positions of the first heat insulation pipe 25 and the second heat insulation pipe 26 are symmetrically arranged up and down. During operation, through the misaligned socket connection of the first heat insulation pipe 25 and the second heat insulation pipe 26 with the first heat insulation pipe 11 and the second heat insulation pipe 15, the connection gaps between the first heat insulation pipe 11 and the second heat insulation pipe 15 and the connection gaps between the first heat insulation pipe 25 and the second heat insulation pipe 26 are misaligned, thereby reducing heat loss;

[0029] The first heat insulation pipe 25 and the second heat insulation pipe 26 are symmetrically provided with fastening grooves 27; magnetic blocks 28 are fixedly connected in the fastening grooves 27. During operation, through the two magnetic blocks 28, the first heat insulation pipe 25 and the second heat insulation pipe 26 can be magnetically fixed on the steam extraction pipeline, thereby facilitating installation and disassembly;

[0030] The heat absorption cover 1 is symmetrically and threadedly fixedly connected with second fasteners 4; a connecting frame 5 is sleeved on the second fasteners 4; a third fastener 6 is inserted through an opening on the connecting frame 5. During operation, through the cooperation of the third fastener 6 and the connecting frame 5, the heat absorption cover 1 can be fixed on the side of the boiler, thereby enabling the heat dissipated by the boiler to be thermally insulated and transferred, and thus recycling the heat dissipated by the boiler.

[0031] The first heat insulation pipe 25 and the second heat insulation pipe 26 are symmetrically adhered with first heat insulation sheets 29; the first heat insulation sheets 29 are symmetrically adhered with second heat insulation sheets 30. During operation, through the two layers of second heat insulation sheets 30 and the first heat insulation sheets 29, the heat of the steam extraction pipeline can be kept inside the steam extraction pipeline, reducing heat dissipation, thereby saving heat;

[0032] The second heat insulation sheets 30 are symmetrically adhered with third heat insulation sheets 31; the first heat insulation sheets 29, the second heat insulation sheets 30 and the third heat insulation sheets 31 are all made of phenolic foam plastics. During operation, through the first heat insulation sheets 29, the second heat insulation sheets 30 and the third heat insulation sheets 31 made of phenolic foam plastics, the heat of the steam extraction pipeline can be kept inside the steam extraction pipeline, thereby reducing the heat dissipation of the steam extraction pipeline;

[0033] Embodiment 2

[0034] Please refer to Figure 5 As shown, compared with Embodiment 1, as another implementation manner of the present invention, the first heat insulation pipe 11 and the second heat insulation pipe 15 are respectively fixedly connected with a first handle 32 and a second handle 33; during operation, through the first handle 32 and the second handle 33, when the first heat insulation pipe 11 and the second heat insulation pipe 15 are inverted on the ground, it is also more convenient to pick up and put down, and it is convenient to hold with both hands to complete the buckling action during installation, without the need for two-person operation, and a single person can complete the installation connection of the first heat insulation pipe 11 and the second heat insulation pipe 15.

[0035] Working principle: By injecting heat-conducting liquid into the second heat-insulating pipe 15 and the first heat-insulating pipe 11, the heat of the boiler can be transferred to the heat-conducting liquid through the heat-absorbing cover 1, and then transferred to the second heat-insulating pipe 15 and the first heat-insulating pipe 11 through the heat-conducting liquid, so as to heat the outer surface of the extraction steam pipeline, thereby reducing the heat dissipation of the extraction steam pipeline and saving heat; Through the horizontal plug-in relationship between the first connecting plate 20 and the second connecting plate 23, the second heat-insulating pipe 15 and the first heat-insulating pipe 11 can be horizontally buckled and installed on the extraction steam pipeline; Through the lifting groove 24, it is convenient to fix and move with bolts and hooks. The first connecting plate 20 and the second connecting plate 23 can be fixed through the nut 21. The guide shaft 22 can be conveniently inserted into the second connecting plate 23 horizontally to assist in completing the installation; Through the misaligned socket connection between the first heat-insulating pipe 25 and the second heat-insulating pipe 26 and the first heat-insulating pipe 11 and the second heat-insulating pipe 15, the connection gaps between the first heat-insulating pipe 11 and the second heat-insulating pipe 15 and the connection gaps between the first heat-insulating pipe 25 and the second heat-insulating pipe 26 are misaligned, thereby reducing heat loss; Through the two magnetic blocks 28, the first heat-insulating pipe 25 and the second heat-insulating pipe 26 can be magnetically fixed on the extraction steam pipeline, which is convenient for installation and disassembly; Through the cooperation of the third fastener 6 and the connecting frame 5, the heat-absorbing cover 1 can be fixed on the side of the boiler, so as to keep the heat dissipated by the boiler for heat transfer, and thus reuse the heat dissipated by the boiler; Through the two layers of second heat-insulating sheets 30 and the first heat-insulating sheet 29, the heat of the extraction steam pipeline can be kept inside the extraction steam pipeline, reducing the heat loss, thereby saving heat; Through the first heat-insulating sheet 29, the second heat-insulating sheet 30 and the third heat-insulating sheet 31 made of phenolic foam plastic, the heat of the extraction steam pipeline can be kept inside the extraction steam pipeline, thereby reducing the heat dissipation of the extraction steam pipeline.

[0036] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An auxiliary steam and water recovery device for a steam turbine, characterized in that: it includes a heat absorption cover (1), a sealing ring (2), a first fastener (3) and a heat recovery unit; a sealing ring (2) is sleeved at the opening of the heat absorption cover (1); the sealing ring (2) is fixedly connected to the opening of the heat absorption cover (1) through the first fastener (3); a heat recovery unit is arranged inside the heat absorption cover (1); the heat recovery unit includes a heat absorption plate (7), a first joint (8) and a left upper pipe (9); a plurality of heat absorption plates (7) are fixedly connected at equal intervals inside the heat absorption cover (1); a first joint (8) is fixedly connected to the heat absorption cover (1) in a sealed and communicating manner; a left upper pipe (9) is connected and inserted into the first joint (8); a second joint (10) is fixedly connected to the left upper pipe (9); the second joint (10) is connected and fixedly connected to the first heat preservation pipe (11); a fourth joint (14) is fixedly connected to the first heat preservation pipe (11); a left lower pipe (13) is fixedly connected and communicated inside the fourth joint (14); a third joint (12) is fixedly connected to the left lower pipe (13); the third joint (12) is connected and fixedly connected to the heat absorption cover (1); a right lower pipe (16) is fixedly connected to the third joint (12); a fifth joint (17) is fixedly connected to the right lower pipe (16); the fifth joint (17) is connected and fixedly connected to the second heat preservation pipe (15); a sixth joint (19) is fixedly connected to the second heat preservation pipe (15); a right upper pipe (18) is fixedly connected and communicated to the sixth joint (19); the right upper pipe (18) is connected and fixedly connected to the first joint (8); heat conduction liquid is injected into the first heat preservation pipe (11) and the second heat preservation pipe (15) for transferring the heat absorbed by the boiler through the heat absorption cover (1); first connecting plates (20) are fixedly connected to the second heat preservation pipe (15) symmetrically up and down, and a second connecting plate (23) is inserted into the first connecting plates (20). Through the horizontal insertion and cooperation of the first connecting plates (20) and the second connecting plate (23), the first heat preservation pipe (11) and the second heat preservation pipe (15) are horizontally buckled and installed on the steam extraction pipeline.

2. The auxiliary steam and water recovery device for a steam turbine according to claim 1, characterized in that: a nut (21) is threadedly sleeved on the first connecting plate (20); a guide shaft (22) is threadedly inserted into the first connecting plate (20); a plurality of lifting grooves (24) are formed on the second connecting plate (23).

3. The auxiliary steam and water recovery device for a steam turbine according to claim 2, characterized in that: a first heat insulation pipe (25) and a second heat insulation pipe (26) are inserted between the first heat preservation pipe (11) and the second heat preservation pipe (15); the positions of the first heat insulation pipe (25) and the second heat insulation pipe (26) are symmetrically up and down.

4. An auxiliary steam and water recovery device for a steam turbine according to claim 3, characterized in that: Snap-fit grooves (27) are symmetrically formed on the first heat insulation pipe (25) and the second heat insulation pipe (26); magnetic blocks (28) are fixedly connected in the snap-fit grooves (27).

5. An auxiliary steam and water recovery device for a steam turbine according to claim 4, characterized in that: Second fasteners (4) are symmetrically and threadedly fixed on the heat absorption cover (1); a connecting frame (5) is sleeved on the second fasteners (4); a third fastener (6) is inserted through an opening in the connecting frame (5).

6. An auxiliary steam and water recovery device for a steam turbine according to claim 5, characterized in that: First heat insulation sheets (29) are symmetrically bonded on the first heat insulation pipe (25) and the second heat insulation pipe (26); second heat insulation sheets (30) are symmetrically bonded on the first heat insulation sheets (29).

7. An auxiliary steam and water recovery device for a steam turbine according to claim 6, characterized in that: Third heat insulation sheets (31) are symmetrically bonded on the second heat insulation sheets (30); the first heat insulation sheets (29), the second heat insulation sheets (30) and the third heat insulation sheets (31) are all made of phenolic foam plastic.

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