CN114484410A - Hydrophobic waste heat utilization system of power plant boiler - Google Patents

Hydrophobic waste heat utilization system of power plant boiler Download PDF

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Publication number
CN114484410A
CN114484410A CN202111621848.2A CN202111621848A CN114484410A CN 114484410 A CN114484410 A CN 114484410A CN 202111621848 A CN202111621848 A CN 202111621848A CN 114484410 A CN114484410 A CN 114484410A
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China
Prior art keywords
water
block
opening
pipe
water collecting
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CN202111621848.2A
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CN114484410B (en
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卢石凡
曾云怡
张洪学
李小波
宋绍
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Wenzhou Hongze Thermal Power Co ltd
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Wenzhou Hongze Thermal Power Co ltd
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Priority to CN202111621848.2A priority Critical patent/CN114484410B/en
Publication of CN114484410A publication Critical patent/CN114484410A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00Component parts or details of steam boilers
    • F22B37/02Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/50Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipe Accessories (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The application discloses power plant boiler's hydrophobic waste heat utilization system, it includes header tank and multiunit play return water device, it includes a water mechanism and a return water mechanism to go out the return water device, it is including being used for setting up the play water mechanism on the header tank to go out water mechanism, return water mechanism is including being used for connecting the inlet tube on the water-cooling wall, it is used for inputting another inlet tube that goes out the return water device with hydrophobic to go out water mechanism and header tank. This application has the effect that improves hydrophobic waste heat utilization effect.

Description

Drainage waste heat utilization system of power station boiler
Technical Field
The application relates to the field of waste heat utilization, in particular to a drainage waste heat utilization system of a power station boiler.
Background
The utility boiler is mainly divided into a pulverized coal furnace and a circulating fluidized bed boiler, and the circulating fluidized bed boiler adopts a clean coal combustion technology with the highest industrialization degree.
The boiler comprises a hearth, a cold water wall arranged in the hearth, a steam pocket connected to the cold water wall, a downcomer connecting the steam pocket and the cold water wall, and a steam pipeline connected to the steam pocket, wherein fuel is ignited in the hearth to heat water in the cold water wall, so that water in the cold water wall forms a steam-water mixture and enters the steam pocket, after the steam-water mixture is subjected to steam-water separation by the steam pocket, the water returns to the cold water wall through the downcomer, and steam is conveyed to a steam turbine through the steam pipeline.
When the boiler is in normal operation, steam flows out of the steam pipeline, and when the boiler is out of operation, the steam inside the steam pipeline can be radiated and condensed into water, and the condensed water is called as 'hydrophobic'. And condensed water is not allowed to exist in the steam pipeline, so the condensed water generated after the boiler is stopped is discharged out of the steam pipeline by adopting a drain pipeline, and a flange of a steam turbine and a pipeline interface is protected.
In the related technology, the cylinder separating system of the circulating fluidized bed boiler comprises a cylinder separating cylinder, a main steam pipeline, a cylinder separating cylinder inlet valve and a steam outlet pipeline which are arranged on the main steam pipeline, and further comprises a drain pipeline and a drain tank which are arranged in front of the cylinder separating cylinder inlet valve, the drain pipeline ensures that drain generated in the main steam pipeline can be smoothly discharged into the drain tank when the boiler is shut down, and the drain is prevented from entering the cylinder separating cylinder.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the drainage generated by the boiler steam generally has higher temperature and pressure, so the boiler steam has higher enthalpy value, and the heat value of the drainage cannot be effectively utilized due to the natural cooling after the drainage enters a drainage box, thereby causing energy waste.
Disclosure of Invention
In order to improve hydrophobic waste heat utilization effect, this application provides a power boiler's hydrophobic waste heat utilization system.
The application provides a hydrophobic waste heat utilization system of power plant boiler adopts following technical scheme:
the utility model provides a power plant boiler's hydrophobic waste heat utilization system, includes header tank and multiunit play return water device, it includes out water mechanism and return water mechanism to go out the return water device, it is including being used for setting up the play water mechanism on the header tank to go out water mechanism, return water mechanism is including being used for connecting the inlet tube on the water-cooling wall, it is used for in another outlet water device's of hydrophobic input inlet tube to go out water mechanism and header tank.
Through adopting above-mentioned technical scheme, when one of them boiler of power plant was shut down and is overhauld, the vapor condensation in the steam conduit was for hydrophobic and gets into in the drain box through the drain pipe. After one boiler is stopped, the other boiler is required to be started to maintain power supply, drain water in a drain tank of the stopped boiler is input into a cold water wall of the boiler to be started through a water outlet mechanism and a water collecting tank so as to preheat the boiler to be started, and the preheating time of the boiler and the consumption of fuel are reduced. Compare in hydrophobic natural cooling in hydrophobic case, through the hydrophobic waste heat utilization system of this application, greatly improved hydrophobic waste heat utilization effect.
Optionally, go out water mechanism including connect outlet pipe on the drain tank, install the drainage pump on the outlet pipe and connect the collector pipe on the header tank, outlet pipe and inlet tube all connect on the collector pipe, go out the return water device and still including the subassembly that blocks water, the subassembly that blocks water is used for blocking collector pipe and outlet pipe or is used for blocking collector pipe and inlet tube.
Through adopting above-mentioned technical scheme, when transmitting the hydrophobic transmission in the drainage box of shutting down the boiler to the cold water wall of the boiler that waits to start, block inlet tube and the collector pipe of connection on the boiler cold water wall of shutting down through the subassembly that blocks water earlier, block outlet pipe and the collector pipe of connection on waiting to start the boiler drainage box through another subassembly that blocks water, then start the hydrophobic pump, in order to stop the hydrophobic in the drainage box of boiler and go into the collector pipe by the drainage box through the outlet pipe pump, in hydrophobic flows into the collector pipe by above-mentioned collector pipe, again through another collector pipe flow to waiting to start in the inlet tube of boiler, finally flow to waiting to start in the cold water wall of boiler, in order to wait to start the cold water wall of boiler and preheat.
Through the structure, different boilers are stopped and different boilers are to be started, and drainage in the stopped boiler can be conveyed to a cold water wall of the to-be-started boiler.
Optionally, the junction of collector pipe, outlet pipe and inlet tube is formed with the space that blocks water, the subassembly that blocks water is including rotating the regulation pole of connecting the piece that blocks water and one end connection on the piece that blocks water in the space that blocks water, the other end of adjusting the pole runs through outside the collector pipe, it has the water channel to run through on the piece that blocks water, the water channel is used for intercommunication collector pipe and outlet pipe or is used for communicateing collector pipe and inlet tube.
By adopting the technical scheme, when the water outlet pipe needs to output drained water, the water blocking piece is driven to rotate by rotating the adjusting rod, so that the water blocking piece rotates to the water passage to communicate the water collecting pipe and the water outlet pipe; when the inlet tube needs to input water for drainage, the adjusting rod is rotated to drive the water blocking piece to rotate, so that the water blocking piece rotates to the water passage to communicate the water collecting pipe with the inlet tube. Compared with the mode that the water inlet pipe or the water outlet pipe is blocked by the water blocking piece, the water blocking piece is provided with the conduction channel to communicate the water inlet pipe with the water collecting pipe or the water outlet pipe with the water collecting pipe, so that the water blocking piece is not easy to drain in the rotating process and enter the water inlet pipe from the water outlet pipe or enter the water outlet pipe from the water collecting pipe.
Optionally, the subassembly that blocks water still including connect the feedback piece and two stoppers of connecting respectively on outlet pipe and collector pipe on adjusting the pole, two the stopper all is used for contradicting with the feedback piece, when the stopper on feedback piece and the outlet pipe is contradicted, water channel intercommunication outlet pipe and collector pipe, when the stopper on feedback piece and the collector pipe is contradicted, water channel intercommunication inlet tube and collector pipe.
Through adopting above-mentioned technical scheme, when rotating the piece that blocks water through adjusting the pole, the feedback piece rotates along with adjusting the pole, and the stopper on the outlet pipe is used for the feedback piece to contradict with the restriction feedback piece with the stopper on the collector pipe and rotates, helps leading to water passageway and inlet tube or outlet pipe to align the intercommunication on the one hand, and on the other hand has given staff's feedback to make the staff can confirm that the piece that blocks water has adjusted and has finished.
Optionally, the water collecting tank is provided with opening and closing mechanisms with the same number as the water collecting pipes, each opening and closing mechanism comprises an opening and closing piece rotatably arranged on the water collecting tank, each opening and closing piece is used for blocking communication between a different water collecting pipe and the water collecting tank, and a communication channel for communicating the water collecting tank and the water collecting pipes penetrates through the opening and closing piece.
Through adopting above-mentioned technical scheme, through rotating the opening and closing piece so that the collector pipe of difference through opening and closing on the piece switch on passageway and header tank intercommunication, only will need to export hydrophobic collector pipe and the hydrophobic collector pipe of needs input and header tank intercommunication to during the hydrophobic collector pipe that need not input of hydrophobic entering has been restricted, hydrophobic utilization effect has been improved.
Optionally, the opening and closing mechanism further comprises an opening and closing rod connected to the opening and closing member, a stop assembly arranged on the opening and closing rod, and a stop block arranged on the water collecting tank, the stop assembly comprises a moving block arranged on the opening and closing rod in a sliding manner, a stop groove used for inserting the end portion of the moving block is formed in the end face, close to the opening and closing rod, of the stop block, and when the opening and closing member rotates to communicate the water collecting pipe and the water collecting tank through a channel, the moving block is aligned with the stop groove.
Through adopting above-mentioned technical scheme, when intercommunication collector pipe and header tank, rotate the opening and closing pole and rotate in order to drive the opening and closing piece, drive the movable block rotation when opening and closing the pole rotation. When the opening and closing rod drives the opening and closing piece to rotate to the communicated water collecting pipe and the water collecting tank of the channel, the moving block is aligned with the stop groove, the moving block is slid to the end of the moving block to be inserted into the stop groove, the rotation of the opening and closing rod is limited, the rotation of the opening and closing piece is limited, and the stability of the opening and closing piece when the channel is communicated with the water collecting pipe and the water collecting tank is improved.
Optionally, the stop block extends circumferentially around an axis of the opening and closing rod, a switch groove is formed in an end portion, facing the opening and closing rod, of the stop block, the stop groove and the switch groove are located at two ends of the stop block respectively, the switch groove is used for allowing an end portion of the moving block to be inserted, and when the opening and closing member rotates to block the water collecting pipe and the water collecting tank, the moving block is aligned with the switch groove.
By adopting the technical scheme, when the opening and closing piece is rotated to block the water collecting pipe and the water collecting tank through the opening and closing rod, the moving block rotates to be aligned with the switch groove along with the opening and closing piece. Then the moving block is slid to enable the end portion of the moving block to be inserted into the switch groove, so that the rotation of the opening and closing rod is limited, the rotation of the opening and closing piece is further limited, and the stability of the opening and closing piece when the water collecting tank and the water collecting tank are blocked by the opening and closing piece is improved.
Optionally, an arc-shaped groove for allowing the end portion of the moving block to slide is formed in the end face, facing the opening and closing rod, of the stop block, and the arc-shaped groove is connected with the switch groove and the stop groove.
Through adopting above-mentioned technical scheme, the arc wall has played the effect of direction to the rotation of movable block, helps movable block and opening and closing rod to rotate.
Optionally, the stopping assembly further comprises a stopping spring for driving the moving block to move towards the direction close to the stopping block, a reset inclined plane is arranged at the end part of the moving block towards the stopping block, and when the end part of the moving block is inserted into the switch groove, the joint of the bottom of the arc-shaped groove and the side wall of the switch groove is abutted against the reset inclined plane.
Through adopting above-mentioned technical scheme, the locking spring has restricted the tip of movable block and has moved out switch slot and locking groove, has improved the movable block to the restriction rotation effect of opening and close the pole. When the end part of the moving block is inserted into the switch groove, the reset inclined plane is pressed at the connecting part of the bottom of the arc-shaped groove and the side wall of the switch groove, so that the opening and closing rod is rotated to drive the opening and closing piece to rotate from the conduction channel to the water collecting pipe and the water collecting tank until the opening and closing piece blocks the water collecting pipe and the water collecting tank, and the moving block moves towards the direction far away from the stop block until the end part of the moving block moves out of the switch groove. Through the structure, when the opening and closing piece rotates to the blocking water collecting pipe and the water collecting tank through the communicating water collecting pipe and the water collecting tank, the end part of the moving block is not required to be drawn out of the switch groove by a worker, and the operation simplicity of the worker is improved.
Optionally, a locking mechanism is arranged on the water collecting tank, the locking mechanism includes a plurality of locking switches, a locking block slidably arranged on the water collecting tank, and a locking driving source for driving the locking block to move, each locking switch is respectively arranged in different switch grooves and used for abutting against adjacent moving blocks, a plurality of grooves are correspondingly formed in the locking block, the grooves are used for enabling end portions, far away from the stop block, of the adjacent moving blocks to extend into the grooves, when the opening and closing member rotates to block the water collecting pipe from the water collecting tank, the end portions, far away from the stop block, of the moving blocks are located in adjacent grooves and aligned, and when two locking switches are separated from the moving blocks, the locking driving source drives the locking block to move.
By adopting the technical scheme, when the water collecting pipe and the water collecting tank are blocked by each opening and closing piece, the end part of the moving block on each opening and closing rod is positioned in the switch groove and is propped against the locking switch. When one boiler is closed and one boiler is to be started, the two opening and closing rods are rotated so that the water collecting pipe for outputting hydrophobic water is communicated with the water collecting tank, and the water collecting pipe for inputting hydrophobic water is communicated with the water collecting tank. The moving blocks on the two opening and closing rods rotate to the end parts of the moving blocks to move into the stopping grooves. Because the two moving blocks move out of the switch grooves, when the locking switches in the two switch grooves are separated from the moving blocks, the locking driving source drives the locking blocks to move. When the opening and closing piece rotates to block the water collecting pipe and the water collecting tank, the end part, far away from the stop block, of the moving block is aligned with the adjacent groove, and therefore the locking block moves into the groove when the end part of the moving block moves into the groove. The moving block has a limiting function on the opening and closing rod after moving into the groove, so that the rotation of the opening and closing piece connected with the opening and closing rod is limited.
After the two water collecting pipes are communicated with the water collecting tank, the rest of the water collecting pipes are limited to be communicated with the collected water through the structure, so that the drainage in the drainage tank of the boiler after being closed can accurately enter the water inlet pipe of the boiler to be started.
In summary, the present application includes at least one of the following beneficial technical effects:
the drainage in the drainage tank of the shutdown boiler is input into the water collecting tank through the water outlet mechanism, and then the drainage in the water collecting tank is input and connected into the water inlet pipe of the cold water wall of the boiler to be started through the water outlet mechanism and the water collecting tank so as to preheat the boiler to be started, so that the drainage waste heat utilization effect is improved;
by means of the locking assembly and the locking mechanism, only two water collecting pipes can be communicated with the water collecting tank, so that drainage water can accurately enter a water inlet pipe of the boiler to be started.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a highlighted water return mechanism in the embodiment of the present application.
FIG. 3 is a schematic partial cross-sectional view of a highlighted water blocking member and a shutter in the embodiment of the present application.
FIG. 4 is a schematic view showing a partial structure of an opening/closing mechanism according to an embodiment of the present disclosure.
Fig. 5 is a partial structural view showing the reset ramp, the stopper and the lock switch in the embodiment of the present application.
Description of reference numerals:
1. a water collection tank; 11. a support pillar; 2. a water outlet and return device; 21. a water outlet mechanism; 211. a water outlet pipe; 212. a water collection pipe; 213. a drain pump; 22. a water return mechanism; 221. a water inlet pipe; 222. a water blocking assembly; 2221. a water blocking member; 2222. adjusting a rod; 2223. a feedback block; 2224. a limiting block; 2225. a water passage; 23. a water-blocking space; 3. an opening and closing mechanism; 31. an opening and closing member; 311. conducting a channel; 32. a switching lever; 321. a rotating wheel; 33. a stop assembly; 331. a moving block; 3331. resetting the inclined plane; 332. a spring seat; 333. a stopper spring; 34. a stopper block; 341. a stopper groove; 342. a switch slot; 343. an arc-shaped slot; 4. a locking mechanism; 41. a locking switch; 42. a lock drive source; 43. a locking block; 431. and (4) a groove.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses power boiler's hydrophobic waste heat utilization system. Referring to fig. 1 and 2, the drainage waste heat utilization system of the utility boiler comprises a water collection tank 1, four sets of water outlet and return devices 2, four sets of opening and closing mechanisms 3 and a locking mechanism 4, wherein four support columns 11 are fixed on the bottom wall of the water collection tank 1.
Referring to fig. 2 and 3, the water outlet and return device 2 includes a water outlet mechanism 21 and a water return mechanism 22, the water outlet mechanism 21 includes a water outlet pipe 211, a water collecting pipe 212 and a drain pump 213, and the water return mechanism 22 includes a water inlet pipe 221 and a water blocking assembly 222. One end of the water outlet pipe 211 is fixed on the drain tank, and the other end of the water outlet pipe 211 is fixedly connected with the water inlet pipe 221 and the water collecting pipe 212. A drain pump 213 is installed on the outlet pipe 211 to transfer drain water in the drain tank into the sump 212. One end of the water inlet pipe 221 is used for being fixed on the cold water wall, and the other end of the water inlet pipe 221 is fixedly connected with the water outlet pipe 211 and the water collecting pipe 212. One end of the water collecting tank 1 is fixed on the water collecting tank 1 and is communicated with the inner cavity of the water collecting tank 1, and the inner cavities of the water collecting pipe 212, the water inlet pipe 221 and the water outlet pipe 211 are communicated with each other.
Referring to fig. 2 and 3, a water blocking space 23 is formed at a connection position of the water collecting pipe 212, the water inlet pipe 221 and the water outlet pipe 211, and the water blocking assembly 222 includes a water blocking member 2221, an adjusting lever 2222, a feedback block 2223 and two limiting blocks 2224. The water blocking member 2221 is formed in a spherical shape and rotatably coupled in the water blocking space 23 to block the water collecting pipe 212 and the water outlet pipe 211 or block the water collecting pipe 212 and the water inlet pipe 221. A water passage 2225 penetrates the water blocking member 2221, and the water passage 2225 is used for communicating the water collection pipe 212 with the water outlet pipe 211 or for communicating the water collection pipe 212 with the water inlet pipe 221.
Referring to fig. 2 and 3, one end of the adjustment lever 2222 is fixed to the water blocking member 2221, the other end of the adjustment lever 2222 penetrates the outside of the water collection pipe 212, and the adjustment lever 2222 is rotatably connected to the water collection pipe 212. The feedback block 2223 is fixed on the adjustment lever 2222, one of the limit blocks 2224 is fixed on the water outlet pipe 211, and the other limit block 2224 is fixed on the water collecting pipe 212. Both the limiting blocks 2224 are located on the rotation path of the feedback block 2223, and are used for abutting against the feedback block 2223. Stopper 2224 is made of iron, and two stoppers 2224 are both magnets that can attract each other with stopper 2224. The feedback block 2223 and the stopper 2224 are abutted and attracted to each other, so that the rotation of the feedback block 2223 is restricted, and the rotation of the water blocking member 2221 is restricted by the feedback block 2223 through the adjustment lever 2222. When the feedback block 2223 rotates to abut against the stop block 2224 on the water outlet pipe 211, the water passage 2225 communicates the water outlet pipe 211 and the water collecting pipe 212. When the feedback block 2223 abuts against the stop block 2224 on the water collection pipe 212, the water passage 2225 communicates the water inlet pipe 221 and the water collection pipe 212.
Referring to fig. 2 and 3, when a boiler is stopped for maintenance, the feedback block 2223 is rotated until the feedback block 2223 abuts against the limit block 2224 on the water outlet pipe 211, and the limit block 2224 and the feedback block 2223 are attracted to each other to limit the rotation of the feedback block 2223. The feedback block 2223 drives the water blocking member 2221 to rotate to the water passage 2225 through the adjusting lever 2222 to communicate the water outlet pipe 211 and the water collecting pipe 212. At this time, the drain pump 213 is started, and the drain in the drain tank passes through the water outlet pipe 211 and the water collecting pipe 212 in sequence and finally enters the water collecting tank 1. When a boiler is to be started, the feedback block 2223 is rotated to the feedback block 2223 to abut against the limiting block 2224 on the water collecting pipe 212, the feedback block 2223 drives the water blocking member 2221 to rotate to the water passage 2225 through the adjusting rod 2222 to communicate the water inlet pipe 221 and the water collecting pipe 212, and at this time, the drainage in the water collecting tank 1 passes through the water collecting pipe 212 and the water inlet pipe 221 in sequence and finally enters the cold water wall of the boiler to be started.
Referring to fig. 3 and 4, the opening and closing mechanism 3 includes an opening and closing member 31, an opening and closing rod 32, a stopper assembly 33, and a stopper block 34, the inner cavity of the water collecting tank 1 is provided with four openings, the inner cavity of the water collecting tank 1 is cross-shaped, and each water collecting pipe 212 is respectively communicated with different openings of the water collecting tank 1. The opening and closing members 31 are ball-shaped and rotatably coupled in the water collecting tank 1, and each of the opening and closing members 31 is used to shield a different opening of the water collecting tank 1 to block the water collecting tank 1 from communicating with the water collecting pipe 212. A communication passage 311 is formed through the opening/closing member 31, and the communication passage 311 is used for communicating the water collecting tank 1 and the water collecting pipe 212.
Referring to fig. 3 and 4, one end of the opening and closing rod 32 is located below the water collecting tank 1, the other end of the opening and closing rod 32 is inserted upward into the water collecting tank 1 and is fixedly connected with the opening and closing member 31, the opening and closing rod 32 is rotatably connected to the water collecting tank 1, and the axis of the opening and closing rod 32 extends in the vertical direction. A rotating wheel 321 is fixed to the end of the opening and closing rod 32 outside the water collecting tank 1, so that the worker can rotate the opening and closing rod 32.
Referring to fig. 2, 4 and 5, a stopper 34 is fixed to the bottom wall of the water collecting tank 1, and the stopper 34 extends circumferentially around the axis of the opening and closing rod 32. The end surface of the stop block 34 facing the opening and closing rod 32 is provided with a stop groove 341, a switch groove 342 and an arc groove 343, the stop groove 341 and the switch groove 342 are respectively positioned at two ends of the stop block 34, the arc groove 343 is positioned between the stop groove 341 and the switch groove 342 and is communicated with the stop groove 341 and the switch groove 342, and the groove depths of the switch groove 342 and the stop groove 341 are larger than the arc groove 343.
Referring to fig. 4, the stopping assembly 33 includes a moving block 331, a spring seat 332, and a stopping spring 333. The moving block 331 penetrates the opening and closing rod 32 and is slidably disposed on the opening and closing rod 32, and the sliding direction of the moving block 331 is perpendicular to the axial direction of the opening and closing rod 32. The spring seat 332 is fixed to the moving block 331, and the spring seat 332 is located on the side of the opening and closing rod 32 away from the stopper 34. Both ends of the stopper spring 333 are fixed to the spring seat 332 and the opening/closing lever 32, the stopper spring 333 extends and contracts in the sliding direction of the moving block 331, and the stopper spring 333 drives the moving block 331 to move in the direction approaching the stopper 34.
Referring to fig. 3, 4 and 5, the stop groove 341 and the switch groove 342 are used for the end of the moving block 331 to be inserted, and the arc-shaped groove 343 is used for the end of the moving block 331 to be slidably arranged. When the opening and closing member 31 rotates to the communication passage 311 to communicate the water collecting pipe 212 with the water collecting tank 1, the moving block 331 is aligned with the stopping groove 341; when the opening and closing member 31 is rotated to block the water collecting pipe 212 from the water collecting tank 1, the moving block 331 is aligned with the opening and closing groove 342.
Referring to fig. 4 and 5, the end of the moving block 331 facing the stop block 34 is provided with a reset inclined surface 3331, and when the moving block 331 is inserted into the switch groove 342, the connection between the bottom of the arc-shaped groove 343 and the side wall of the switch groove 342 abuts against the reset inclined surface 3331. When the moving block 331 is driven to move by rotating the opening and closing rod 32, the connection between the bottom of the arc-shaped groove 343 and the side wall of the switch groove 342 is abutted against the reset inclined plane 3331, so that the moving block 331 moves to the end thereof far away from the stop block 34 and moves out of the switch groove 342 and enters the arc-shaped groove 343.
Referring to fig. 2, 4 and 5, the locking mechanism 4 includes four locking switches 41, a locking driving source 42 and a locking block 43, each locking switch 41 is fixed at the bottom of a switch groove 342, and the locking switch 41 is configured to abut against an adjacent moving block 331. The locking driving source 42 is fixed on the bottom wall of the water collecting tank 1, the locking driving source 42 is an air cylinder with a piston rod extending and contracting along the vertical direction, in other embodiments, the locking driving source 42 can also be an oil cylinder, and any mode can be used for driving the locking block 43 to move along the vertical direction. When the two lock switches 41 are separated from the moving block 331, the lock driving source 42 drives the lock block 43 to move down.
Referring to fig. 3, 4 and 5, the locking block 43 is fixed at an end of a piston rod of the locking driving source 42, the locking block 43 is a cylinder, four grooves 431 penetrate through the locking block 43 in the vertical direction, the grooves 431 are uniformly distributed along the circumferential side wall of the locking block 43, and the grooves 431 are used for inserting the end of the adjacent moving block 331 away from the stop block 34. When the shutter 31 rotates to block the water collecting pipe 212 from the water collecting tank 1 by itself, the end of the moving block 331 away from the rotating block is aligned with the adjacent groove 431.
The implementation principle of the hydrophobic waste heat utilization system of the utility boiler is as follows: when one boiler is stopped for maintenance and the other boiler is to be started, the feedback block 2223 adjacent to the stopped boiler is rotated first to enable the feedback block 2223 to be abutted against the limiting block 2224 on the water outlet pipe 211 and to be attracted mutually, so that the water outlet pipe 211 is communicated with the water collecting pipe 212, and the water collecting pipe 212 is used for transmitting the drained water in the water outlet pipe 211 to the water collecting tank 1; the feedback block 2223 adjacent to the boiler to be started is rotated so that the feedback block 2223 collides with the stopper 2224 of the water collection pipe 212 and is attracted to each other, thereby allowing the water inlet pipe 221 to communicate with the water collection pipe 212, and the water collection pipe 212 is used to transfer the drain water in the water collection tank 1 to the water inlet pipe 221.
Then, two of the turning wheels 321 are rotated to drive the opening and closing rod 32 and the opening and closing member 31 to rotate, so that the water collecting pipe 212 for inputting the drain water into the water collecting tank 1 is communicated with the water collecting tank 1, and the water collecting pipe 212 for inputting the drain water into the water inlet pipe 221 in the water collecting tank 1 is communicated with the water collecting tank 1. The moving block 331 is moved out of the switch groove 342 and into the stopper groove 341 by the rotation of the opening and closing lever 32, so that the two lock switches 41 are separated from the moving block 331, and the lock driving source 42 drives the lock block 43 to move down so that the end portions of the remaining moving block 331 are inserted into the recesses 431, thereby restricting the rotation of the remaining two opening and closing levers 32.
And finally, starting a drain pump 213 adjacent to the shutdown overhaul boiler, so that drain water in the drain tank passes through a water outlet pipe 211, a water collecting pipe 212 adjacent to the shutdown boiler, the water collecting tank 1, the water collecting pipe 212 adjacent to the boiler to be started and a water inlet pipe 221 in sequence, and is finally input into a cold water wall of the boiler to be started, so that the cold water wall of the boiler to be started is preheated, and the waste heat utilization effect of the drain water is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a hydrophobic waste heat utilization system of power plant boiler which characterized in that: including header tank (1) and multiunit play return water device (2), go out return water device (2) including going out water mechanism (21) and return water mechanism (22), go out water mechanism (21) including being used for setting up play water mechanism (21) on the drain tank, return water mechanism (22) is including being arranged in connecting inlet tube (221) on the water-cooled wall, go out water mechanism (21) and header tank (1) and be arranged in inlet tube (221) of another return water device (2) of hydrophobic input.
2. The hydrophobic waste heat utilization system of utility boiler of claim 1, characterized in that: go out water mechanism (21) including outlet pipe (211) of connection on hydrophobic tank, install hydrophobic pump (213) on outlet pipe (211) and connect collector pipe (212) on header tank (1), outlet pipe (211) and inlet tube (221) are all connected on collector pipe (212), go out backwater device (2) and still including the subassembly (222) that blocks water, subassembly (222) that blocks water are used for blocking collector pipe (212) and outlet pipe (211) or are used for blocking collector pipe (212) and inlet tube (221).
3. The hydrophobic waste heat utilization system of a utility boiler of claim 2, characterized in that: the utility model discloses a water collection pipe, including water collection pipe (212), outlet pipe (211) and inlet tube (221), the junction of water collection pipe (212), outlet pipe (211) and inlet tube (221) is formed with the space (23) that blocks water, the subassembly (222) that blocks water is including rotating the regulation pole (2222) of connecting on the piece (2221) that blocks water of blocking water in the space (23) and one end connection, the other end of adjusting pole (2222) runs through outside water collection pipe (212), it has water passage (2225) to run through on the piece (2221) to block water, water passage (2225) are used for intercommunication water collection pipe (212) and outlet pipe (211) or are used for intercommunication water collection pipe (212) and inlet tube (221).
4. The hydrophobic waste heat utilization system of utility boiler of claim 3, characterized in that: the subassembly (222) that blocks water still including connect feedback piece (2223) and two stopper (2224) of connecting on outlet pipe (211) and collector pipe (212) on adjusting pole (2222), two stopper (2224) all are used for contradicting with feedback piece (2223), when stopper (2224) on feedback piece (2223) and outlet pipe (211) are contradicted, lead to water passageway (2225) intercommunication outlet pipe (211) and collector pipe (212), when stopper (2224) on feedback piece (2223) and collector pipe (212) are contradicted, lead to water passageway (2225) intercommunication inlet tube (221) and collector pipe (212).
5. The hydrophobic waste heat utilization system of the utility boiler of claim 2, characterized in that: the water collecting tank is characterized in that opening and closing mechanisms (3) which are consistent with the number of the water collecting pipes (212) are arranged on the water collecting tank (1), each opening and closing mechanism (3) comprises an opening and closing piece (31) which is rotatably arranged on the water collecting tank (1), each opening and closing piece (31) is used for blocking different water collecting pipes (212) to be communicated with the water collecting tank (1), and a communicating channel (311) for communicating the water collecting tank (1) with the water collecting pipes (212) penetrates through each opening and closing piece (31).
6. The hydrophobic waste heat utilization system of a utility boiler of claim 5, characterized in that: the opening and closing mechanism (3) further comprises an opening and closing rod (32) connected to the opening and closing piece (31), a stop component (33) arranged on the opening and closing rod (32) and a stop block (34) arranged on the water collecting tank (1), the stop component (33) comprises a moving block (331) arranged on the opening and closing rod (32) in a sliding mode, a stop groove (341) used for enabling the end portion of the moving block (331) to be inserted is formed in the end face, close to the opening and closing rod (32), of the stop block (34), when the opening and closing piece (31) rotates to the conducting channel (311) to communicate the water collecting pipe (212) with the water collecting tank (1), the moving block (331) is aligned with the stop groove (341).
7. The hydrophobic waste heat utilization system of utility boiler of claim 6, characterized in that: the stop block (34) circumferentially extends around the axis of the opening and closing rod (32), a switch groove (342) is formed in the end portion, facing the opening and closing rod (32), of the stop block (34), the stop groove (341) and the switch groove (342) are located at two ends of the stop block (34) respectively, the switch groove (342) is used for enabling the end portion of the moving block (331) to be inserted, and when the opening and closing piece (31) rotates to block the water collecting pipe (212) and the water collecting tank (1), the moving block (331) is aligned with the switch groove (342).
8. The hydrophobic waste heat utilization system of a utility boiler of claim 7, characterized in that: an arc-shaped groove (343) used for enabling the end of the moving block (331) to be arranged in a sliding mode is formed in the end face, facing the opening and closing rod (32), of the stop block (34), and the arc-shaped groove (343) is connected with the switch groove (342) and the stop groove (341).
9. The hydrophobic waste heat utilization system of a utility boiler of claim 8, characterized in that: the stopping assembly (33) further comprises a stopping spring (333) used for driving the moving block (331) to move towards the direction close to the stopping block (34), a reset inclined surface (3331) is arranged at the end part, facing the stopping block (34), of the moving block (331), and when the end part of the moving block (331) is inserted into the switch groove (342), the connecting part of the bottom of the arc-shaped groove (343) and the side wall of the switch groove (342) is abutted against the reset inclined surface (3331).
10. The hydrophobic waste heat utilization system of a utility boiler of claim 9, characterized in that: the water collecting tank (1) is provided with a locking mechanism (4), the locking mechanism (4) comprises a plurality of locking switches (41), a locking block (43) which is slidably arranged on the water collecting tank (1) and a locking driving source (42) which is used for driving the locking block (43) to move, each locking switch (41) is respectively arranged in different switch grooves (342) and used for abutting against adjacent moving blocks (331), a plurality of grooves (431) are correspondingly formed in the locking block (43), the grooves (431) are used for enabling the end parts, far away from the stop block (34), of the adjacent moving blocks (331) to extend into, when the opening and closing piece (31) rotates to block the water collecting pipe (212) and the water collecting tank (1), the end parts, far away from the stop block (34), of the moving blocks (331) are located in alignment of the adjacent grooves (431), and when the two locking switches (41) are separated from the moving blocks (331), the lock driving source (42) drives the lock block (43) to move.
CN202111621848.2A 2021-12-28 2021-12-28 Drainage waste heat utilization system of power station boiler Active CN114484410B (en)

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US20150211387A1 (en) * 2014-01-27 2015-07-30 Kabushiki Kaisha Toshiba Steam turbine pipe
CN213656708U (en) * 2020-08-06 2021-07-09 苏州蓝柯新能源科技有限公司 Drainage system of air heater of power station boiler
CN214664342U (en) * 2021-04-12 2021-11-09 华能秦煤瑞金发电有限责任公司 Environment-friendly energy-saving boiler starting drainage device
CN114576688A (en) * 2021-12-28 2022-06-03 温州宏泽热电股份有限公司 Comprehensive cascade utilization system for waste heat of thermal power plant

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140029649A (en) * 2012-08-29 2014-03-11 현대중공업 주식회사 A structure of a pipe for a boiler
CN203687003U (en) * 2013-12-06 2014-07-02 河北省电力勘测设计研究院 Boiler regular blowdown drainage recovery system
US20150211387A1 (en) * 2014-01-27 2015-07-30 Kabushiki Kaisha Toshiba Steam turbine pipe
CN204227401U (en) * 2014-10-24 2015-03-25 西安华江环保科技股份有限公司 The unrestrained apparatus for recovering of a kind of dry coke quenching boiler circuit
CN213656708U (en) * 2020-08-06 2021-07-09 苏州蓝柯新能源科技有限公司 Drainage system of air heater of power station boiler
CN214664342U (en) * 2021-04-12 2021-11-09 华能秦煤瑞金发电有限责任公司 Environment-friendly energy-saving boiler starting drainage device
CN114576688A (en) * 2021-12-28 2022-06-03 温州宏泽热电股份有限公司 Comprehensive cascade utilization system for waste heat of thermal power plant

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