CN217004506U

CN217004506U - Waste heat recovery set composite of thermal power plant

Info

Publication number: CN217004506U
Application number: CN202220571920.9U
Authority: CN
Inventors: 陈晨
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-07-19
Anticipated expiration: 2032-03-16

Abstract

The utility model discloses a waste heat recovery composite device of a thermal power plant, which comprises a hollow device shell, wherein the side wall of the device shell is fixedly connected with a plurality of heat exchange tubes in a penetrating manner, a cavity is formed in the side wall of the device shell, one end of each heat exchange tube penetrates and extends into the cavity, the other end of each heat exchange tube penetrates and extends to the outside of the device shell, a servo motor is welded on the side wall of the device shell, an output shaft of the servo motor is rotatably connected with the device shell in a penetrating manner through a bearing, a first gear is in interference fit with one end, located in the cavity, of the output shaft of the servo motor, a connecting rod is rotatably connected to the side wall, away from the servo motor, of the first gear through a pin shaft, a pump plate is hermetically and slidably connected in the cavity, and one end, away from the first gear, of the connecting rod is rotatably connected with the lower surface of the pump plate through a pin shaft. The utility model can effectively recycle the waste heat, avoid waste, and simultaneously can carry out self-cleaning to ensure the heat exchange efficiency of the heat exchange tube.

Description

Waste heat recovery set composite of thermal power plant

Technical Field

The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery and combination device of a thermal power plant.

Background

Electric energy is one of energy sources commonly used in our lives, the generation modes of the electric energy are various, most of the electric energy is generally generated by a thermal power plant at present, and the electric energy is generated by using combustible materials (such as coal) as fuel. The basic production process is as follows: when the fuel is burnt, water is heated to generate steam, chemical energy of the fuel is converted into heat energy, the steam pressure pushes a steam turbine to rotate, the heat energy is converted into mechanical energy, and then the steam turbine drives a generator to rotate, so that the mechanical energy is converted into electric energy.

In the prior art, the existing thermal power plant generally directly discharges the flue gas, and the heat in the flue gas is not well utilized, so that the heat of the part is wasted, the energy of combustible materials cannot be fully utilized, and the waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a waste heat recovery and combination device of a thermal power plant.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a waste heat recovery composite device of a thermal power plant comprises a hollow device shell, wherein a plurality of heat exchange tubes are fixedly connected with the side wall of the device shell in a penetrating way, a cavity is arranged in the side wall of the device shell, one end of the heat exchange tube penetrates and extends into the cavity, the other end of the heat exchange tube penetrates and extends to the outside of the device shell, the side wall of the device shell is welded with a servo motor, the output shaft of the servo motor is in penetrating and rotating connection with the device shell through a bearing, a first gear is in interference fit with one end of an output shaft of the servo motor, which is positioned in the cavity, the side wall of the first gear, which is far away from one side of the servo motor, is rotatably connected with a connecting rod through a pin shaft, the device is characterized in that a pump plate is connected in the cavity in a sealing and sliding mode, one end, far away from the first gear, of the connecting rod is rotatably connected with the lower surface of the pump plate through a pin shaft, and a plurality of water inlet pipes fixedly connected with penetrate through the side wall of the device shell.

Preferably, the side wall of the device shell is fixedly connected with an inlet pipe in a penetrating way, and the top wall of the device shell is fixedly connected with an outlet pipe in a penetrating way.

Preferably, the device shell is connected with a reciprocating lead screw through a bearing in a penetrating and rotating mode, one end of the reciprocating lead screw penetrates and extends into the cavity and is in interference fit with a second gear, the other end of the reciprocating lead screw penetrates and extends into the device shell, a section, located inside the device shell, of the reciprocating lead screw is provided with threads, the rest of the reciprocating lead screw is of a smooth structure, and the second gear is meshed with the first gear.

Preferably, the device shell inside wall sliding connection has the sliding frame, the sliding tray has all been seted up to roof and interior diapire in the sliding frame, sliding connection has the slider in the sliding tray, fixedly connected with spring between slider and the sliding tray inner wall, the slider lower surface rotates through the round pin axle and is connected with the cleaning block, the cleaning block lower surface is provided with the brush hair, sliding frame and reciprocal lead screw threaded connection.

Preferably, a plurality of guide rods are welded on the inner side wall of the shell of the device and are in penetrating sliding connection with the sliding frame.

Preferably, the size of the second gear is smaller than the size of the first gear.

Compared with the prior art, the utility model has the advantages that:

1. the flue gas is discharged into the device shell through the inlet pipe, and external water is pumped into the heat exchange pipe through the rotation of the servo motor, so that the heat exchange between the flue gas and the heat exchange pipe is realized, the temperature of the water in the heat exchange pipe is increased, the heat in the flue gas is fully utilized, the waste heat recovery is ensured, and the waste is avoided;

2. servo motor pivoted in, through the meshing of first gear and second gear, drive reciprocal lead screw and rotate to make when supplying water, the sliding frame drives cleaning block reciprocating motion, carries out the automatically cleaning to the heat transfer pipe outer wall, avoids impurity or incrustation scale in the flue gas to adhere to on its surface, influences heat exchange efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a waste heat recovery and combination device of a thermal power plant according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a partial sectional view taken at B-B in fig. 1.

In the figure: the device comprises a device shell 1, an inlet pipe 2, an outlet pipe 3, a heat exchange pipe 4, a cavity 5, a pump plate 6, a servo motor 7, a first gear 8, a connecting rod 9, a water inlet pipe 10, a second gear 11, a reciprocating screw rod 12, a sliding frame 13, a sliding groove 14, a spring 15, a cleaning block 16, a guide rod 17 and a sliding block 18.

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.

Referring to fig. 1-3, a waste heat recovery composite device of a thermal power plant comprises a hollow device shell 1, a plurality of heat exchange tubes 4 are fixedly connected to the side wall of the device shell 1 in a penetrating manner, as shown in fig. 1, the heat exchange tubes 4 are serpentine, so that the contact area between the heat exchange tubes and flue gas is increased, the heat exchange efficiency is improved, a cavity 5 is formed in the side wall of the device shell 1, one end of each heat exchange tube 4 extends into the cavity 5 in a penetrating manner, the other end extends to the outside of the device shell 1 in a penetrating manner, a servo motor 7 is welded to the side wall of the device shell 1, pulse current is introduced into the servo motor 7, each pulse enables the servo motor 7 to rotate for half a circle, so that water can stay for a period of time in the heat exchange tubes 4, an output shaft of the servo motor 7 is rotatably connected with the device shell 1 in a penetrating manner through a bearing, and one end, located in the cavity 5, of the output shaft of the servo motor 7 is in interference fit with a first gear 8, the side wall of one side, away from the servo motor 7, of the first gear 8 is rotatably connected with a connecting rod 9 through a pin shaft, the cavity 5 is internally and hermetically and slidably connected with a pump plate 6, one end, away from the first gear 8, of the connecting rod 9 is rotatably connected with the lower surface of the pump plate 6 through the pin shaft, and the side wall of the device shell 1 is fixedly connected with a plurality of water inlet pipes 10 in a penetrating mode;

be provided with the check valve in the inlet tube 10, it is connected with external water tank, and the check valve in the inlet tube 10 only allows water to get into in the cavity 5 from external water tank, also is provided with the check valve in the heat exchange tube 4, and heat exchange tube 4 is connected with external water storage device, and the water after will rising temperature is stored and is utilized, and the check valve in the heat exchange tube 4 only allows water to get into in the heat exchange tube 4 from the cavity 5.

The side wall of the device shell 1 is fixedly connected with an inlet pipe 2 in a penetrating way, and the top wall of the device shell 1 is fixedly connected with an outlet pipe 3 in a penetrating way.

Device shell 1 runs through the rotation through the bearing and is connected with reciprocal lead screw 12, and reciprocal lead screw 12 one end runs through and extends to cavity 5 in and interference fit has second gear 11, and the other end runs through and extends to device shell 1 inside, and reciprocal lead screw 12 is located the inside one section of device shell 1 and is provided with the screw thread, and remaining part is smooth structure, second gear 11 and the meshing of first gear 8.

Device shell 1 inside wall sliding connection has a sliding frame 13, sliding tray 14 has all been seted up to roof and interior diapire in sliding frame 13, sliding tray 14 internal sliding connection has slider 18, fixedly connected with spring 15 between slider 18 and the 14 inner walls of sliding tray, 18 lower surfaces of slider are connected with cleaning block 16 through the round pin hub rotation, cleaning block 16 lower surfaces are provided with the brush hair, sliding frame 13 and reciprocal lead screw 12 threaded connection.

A plurality of guide rods 17 are welded on the inner side wall of the device shell 1, the guide rods 17 are connected with the sliding frame 13 in a penetrating and sliding mode, and the guide rods 17 guarantee stable reciprocating motion of the sliding frame 13.

The size of second gear 11 is less than the size of first gear 8 for first gear 8 drives second gear 11 acceleration rate and rotates, thereby makes reciprocal lead screw 12 slew velocity accelerate, thereby makes sliding frame 13 reciprocating speed accelerate, improves clean efficiency.

In the utility model, flue gas is discharged into a device shell 1 through an inlet pipe 2, a servo motor 7 is started at the same time, pulse current is supplied to the servo motor 7, so that the servo motor 7 intermittently rotates, the servo motor 7 drives a first gear 8 to rotate, the first gear 8 enables a pump plate 6 to reciprocate up and down through a connecting rod 9, water is pumped into a heat exchange pipe 4 through a water inlet pipe 10, and then the water is pumped into the heat exchange pipe 4, so that waste heat in the flue gas heats water in the heat exchange pipe 4 through the heat exchange pipe 4, the waste heat is recycled, and the heated water is discharged and collected and utilized in other places;

meanwhile, the first gear 8 rotates and simultaneously drives the second gear 11 to rotate at an accelerated speed, so that the second gear 11 drives the reciprocating screw 12 to rotate, the sliding frame 13 drives the sliding block 18 to do reciprocating motion, the sliding block 18 drives the cleaning block 16 to do reciprocating motion, the outer wall of the heat exchange tube 4 is continuously cleaned through bristles, and therefore the situation that impurities or scales in smoke are attached to the surface of the outer wall of the heat exchange tube to influence the heat exchange efficiency is avoided.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a waste heat recovery set composite of thermal power plant, includes hollow device shell (1), its characterized in that, device shell (1) lateral wall runs through a plurality of heat exchange tubes (4) of fixedly connected with, seted up cavity (5) in device shell (1) lateral wall, in heat exchange tube (4) one end runs through and extends to cavity (5), the other end runs through and extends to device shell (1) is outside, device shell (1) lateral wall welding has servo motor (7), the output shaft of servo motor (7) runs through the rotation with device shell (1) through the bearing and is connected, the one end interference fit that the output shaft of servo motor (7) is located cavity (5) has first gear (8), the lateral wall that servo motor (7) one side was kept away from in first gear (8) is connected with connecting rod (9) through the round pin axle rotation, cavity (5) inner seal sliding connection has pump plate (6), one end of the connecting rod (9) far away from the first gear (8) is rotatably connected with the lower surface of the pump plate (6) through a pin shaft, and a plurality of water inlet pipes (10) are fixedly connected with the side wall of the device shell (1) in a penetrating mode.

2. The waste heat recovery composite device of the thermal power plant as claimed in claim 1, characterized in that the side wall of the device housing (1) is fixedly connected with an inlet pipe (2) in a penetrating way, and the top wall of the device housing (1) is fixedly connected with an outlet pipe (3) in a penetrating way.

3. The waste heat recovery composite device of the thermal power plant is characterized in that a reciprocating lead screw (12) is connected to the device shell (1) in a penetrating and rotating mode through a bearing, one end of the reciprocating lead screw (12) extends into the cavity (5) in a penetrating mode and is provided with a second gear (11) in an interference fit mode, the other end of the reciprocating lead screw extends into the device shell (1) in a penetrating mode, a section, located inside the device shell (1), of the reciprocating lead screw (12) is provided with threads, the rest portion of the reciprocating lead screw is of a smooth structure, and the second gear (11) is meshed with the first gear (8).

4. The waste heat recovery composite device of the thermal power plant as claimed in claim 3, characterized in that a sliding frame (13) is slidably connected to the inner side wall of the device housing (1), sliding grooves (14) are formed in both the inner top wall and the inner bottom wall of the sliding frame (13), sliding blocks (18) are slidably connected in the sliding grooves (14), springs (15) are fixedly connected between the sliding blocks (18) and the inner walls of the sliding grooves (14), the lower surfaces of the sliding blocks (18) are rotatably connected with cleaning blocks (16) through pin shafts, bristles are arranged on the lower surfaces of the cleaning blocks (16), and the sliding frame (13) is in threaded connection with the reciprocating lead screws (12).

5. The waste heat recovery composite device of the thermal power plant as claimed in claim 4, characterized in that a plurality of guide rods (17) are welded on the inner side wall of the device shell (1), and the guide rods (17) are connected with the sliding frame (13) in a penetrating and sliding manner.

6. A waste heat recovery composite device of a thermal power plant according to claim 3, characterized in that the size of the second gear (11) is smaller than the size of the first gear (8).