CN213693370U

CN213693370U - Motor structure for flue gas-flue gas heat exchanger

Info

Publication number: CN213693370U
Application number: CN202023081626.XU
Authority: CN
Inventors: 黄泳华
Original assignee: Guangzhou Development Power Technology Co ltd
Current assignee: Guangzhou Development Power Technology Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-07-13
Anticipated expiration: 2030-12-17

Abstract

The utility model provides a motor structure for flue gas-gas heater relates to the motor field. The motor structure for the flue gas-flue gas heat exchanger comprises a shell, a stator and a motor main shaft which is rotatably arranged in the shell, wherein one end of the motor main shaft extends to the outside of the shell, and one end of the motor main shaft is used for being in transmission connection with a rotor of the flue gas-flue gas heat exchanger; the other end of the motor spindle is also coaxially connected with a protruding shaft part, the protruding shaft part extends to the outside of a tail cover of the motor, a rotation stopping structure is arranged on the protruding shaft part, and the rotation stopping structure is used for being circumferentially clamped and matched with the turning tool. The turning tool is used for being matched with the protruding shaft part which extends outwards in a circumferential clamping mode, the protruding shaft part, the motor spindle and the rotor of the flue gas-flue gas heat exchanger are driven to rotate through the turning tool, and the overhauling position of the rotor of the flue gas-flue gas heat exchanger is adjusted. Compare in current maintenance mode, need not to unpack apart the motor tail-hood and then move with the spanner dish, the operation of whole maintenance is more convenient, and the maintenance degree of difficulty is lower.

Description

Motor structure for flue gas-flue gas heat exchanger

Technical Field

The utility model relates to the technical field of motors, especially, relate to a motor structure for flue gas-gas heater.

Background

In the wet desulfurization process, a flue gas-flue gas heat exchanger (abbreviated as "GGH") is generally used. The method has the effects of reducing the temperature of the raw flue gas entering the reaction tank of the absorption tower, enabling the desulfurized flue gas to enter the GGH again to realize temperature rise, improving the temperature of the flue gas discharged after desulfurization, ensuring that the discharged flue gas can be diffused to a larger range, and preventing the problem of settlement pollution around a power plant.

Generally, a motor is adopted to drive a GGH to rotate, for example, Chinese patent application with application publication No. CN102200408A and application publication No. 2011.09.28 discloses a leakage-free sealing system isolation air curtain of a rotary gas-gas heat exchanger, and specifically discloses that the GGH transfers the heat of unpurified high-temperature flue gas to purified cold flue gas through a smooth or corrugated metal sheet in the specification-background art; the unpurified flue gas passes through one side of the rotor and the purified flue gas passes through the other side of the rotor. The GGH consists of a cylindrical rotor, a cylindrical shell, a transmission device, a sealing device and a soot blowing system, wherein the rotor is divided into a plurality of sector bins; the cross section of the rotor is divided into two circulation areas of raw smoke and clean smoke, the two circulation areas are separated by a transition area, and a heat transfer process is completed when the rotor rotates for one circle.

Since GGH is in a humid environment for a long period of time and is in direct contact with flue gas of corrosive components, a problem of corrosion damage often occurs. When the maintenance, need to shut down the motor outage, then unpack the motor tail-hood apart, use the spanner to block the motor spindle, coil the GGH rotor through the manpower and rotate and accomplish the maintenance. However, the operation of disassembling the motor tail cover and then coiling the motor by using the wrench is complicated, the wrench is easy to separate from the motor spindle in the coiling process, and the actual maintenance difficulty is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, an object of the utility model is to provide a motor structure for flue gas-flue gas heat exchanger to solve the complex operation that unpacks the motor tail-hood apart and then moves with the spanner dish, move the in-process spanner at the dish and break away from with motor spindle easily, the problem that the actual overhaul degree of difficulty is big.

The utility model discloses a technical scheme for flue gas-gas heater's motor structure does:

the motor structure for the flue gas-flue gas heat exchanger comprises a shell, a stator and a motor main shaft, wherein the stator is installed in the shell, the motor main shaft is rotatably installed in the shell, one end of the motor main shaft extends to the outside of the shell, and one end of the motor main shaft is in transmission connection with a rotor of the flue gas-flue gas heat exchanger;

the other end of the motor spindle is also coaxially connected with a protruding shaft part, the protruding shaft part extends to the outside of a tail cover of the motor, a rotation stopping structure is arranged on the protruding shaft part, and the rotation stopping structure is used for being circumferentially clamped and matched with a turning tool.

Furthermore, the rotation stopping structure is a protruding block which is convexly arranged on the outer peripheral surface of the protruding shaft part, and the protruding block is used for being clamped and matched with a clamping groove on the turning tool.

Furthermore, the protruding blocks are arranged in a manner of being centrosymmetric with respect to the axis of the motor spindle, and the number of the protruding blocks is at least two.

Further, the protruding length of the protruding shaft part extending to the outside of the tail cover of the motor is not less than 30 mm.

Further, the protruding length of the protruding shaft part extending to the outside of the tail cover of the motor is any size between 30mm and 100 mm.

Furthermore, a cooling fan is further installed at a position, close to the other end, of the motor spindle, a tail cover of the motor is covered outside the cooling fan, and a through hole for the protruding shaft to penetrate out is formed in the tail cover of the motor.

Furthermore, the protruding shaft part is fixedly connected with the other end of the motor main shaft in a welding mode.

Furthermore, the profile shape of the convex shaft part is a polygon prism, and the edge surface of the convex shaft part forms the rotation stopping structure.

Has the advantages that: the motor structure for the flue gas-flue gas heat exchanger adopts the structural design that the protruding shaft part is coaxially connected to the motor main shaft, the protruding shaft part extends to the outside of a tail cover of the motor, the protruding shaft part is provided with a rotation stopping structure, a turning tool is used for being circumferentially clamped and matched with the protruding shaft part which extends outwards, the protruding shaft part, the motor main shaft and the rotor of the flue gas-flue gas heat exchanger can be driven to rotate by the turning tool, and the maintenance position of the rotor of the flue gas-flue gas heat exchanger is adjusted. Compare the maintenance mode among the prior art, need not to unpack apart motor tail-hood and then move with the spanner dish, the operation of whole maintenance is more convenient, has avoided moving in-process spanner and motor spindle at the dish and has broken away from easily, and the actual maintenance degree of difficulty is lower.

Drawings

Fig. 1 is a schematic front view of a motor structure according to an embodiment 1 of the motor structure for a flue gas-flue gas heat exchanger of the present invention;

fig. 2 is an assembly diagram of the turning tool and the protruding shaft portion in the embodiment 1 of the motor structure for a flue gas-flue gas heat exchanger of the present invention.

In the figure: 1-machine shell, 11-stator, 12-tail cover of motor, 13-cooling fan, 2-main shaft of motor, 20-convex shaft portion, 21-convex block, 3-turning tool, 30-clamping groove and 31-handle.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The embodiment 1 of the motor structure for the flue gas-flue gas heat exchanger of the present invention, as shown in fig. 1 and fig. 2, the motor structure for the flue gas-flue gas heat exchanger includes a casing 1, a stator 11 installed in the casing 1, and a motor spindle 2 rotatably installed in the casing 1, one end of the motor spindle 2 extends to the outside of the casing 1, and one end of the motor spindle 2 is used for being in transmission connection with a rotor of the flue gas-flue gas heat exchanger; the other end of the motor spindle 2 is also coaxially connected with a protruding shaft part 20, the protruding shaft part 20 extends to the outside of the tail cover 12 of the motor, and a rotation stopping structure is arranged on the protruding shaft part 20 and used for being circumferentially clamped and matched with the turning tool 3.

The motor structure for the flue gas-flue gas heat exchanger adopts the structural design that the protruding shaft part 20 is coaxially connected to the motor main shaft 2, the protruding shaft part 20 extends to the outside of the tail cover 12 of the motor, the protruding shaft part 20 is provided with a rotation stopping structure, the turning tool 3 is circumferentially clamped and matched with the protruding shaft part 20 extending outwards, the protruding shaft part 20, the motor main shaft 2 and the rotor of the flue gas-flue gas heat exchanger can be driven to rotate by the turning tool 3, and the overhauling position of the rotor of the flue gas-flue gas heat exchanger is adjusted. Compare the maintenance mode among the prior art, need not to unpack apart motor tail-hood and then move with the spanner dish, the operation of whole maintenance is more convenient, has avoided moving in-process spanner and motor spindle at the dish and has broken away from easily, and the actual maintenance degree of difficulty is lower.

In the present embodiment, the rotation stopping structure is a protruding block 21 protruding from the outer peripheral surface of the protruding shaft portion 20, and the protruding block 21 is used for being engaged with the engaging groove 30 on the turning tool 3. At least two of the protruding blocks 21 are provided in a central symmetry with respect to the axis of the motor spindle 2. Specifically, two convex blocks 21 are arranged, and the two convex blocks 21 are distributed in central symmetry about the axis of the motor spindle 2; correspondingly, the turning tool 3 is of a crank structure and comprises a handle 31, a ferrule and a connecting arm, wherein the connecting arm is connected between the handle 31 and the ferrule, and two clamping grooves 30 are arranged in the ferrule. During the use, install the cutting ferrule of barring instrument 3 on protruding axle part 20, through two draw-in grooves 30 respectively with protruding piece 21 unsmooth cooperation on protruding axle part 20 for form between barring instrument 3 and the protruding axle part 20 and only rotate the fitting relation, so that the staff shakes the barring instrument 3 and can drive the rotor rotation of flue gas-flue gas heat exchanger.

Wherein, the protruding length of the protruding shaft part 20 extending to the outside of the tail cover 12 of the motor is not less than 30 mm. Specifically, the protruding length of the protruding shaft portion 20 extending to the outside of the tail cover 12 of the motor is any size between 30mm and 100 mm. By designing the axial dimension of the protruding shaft portion 20 to be longer, it is ensured that the barring tool 3 can be stably clamped on the protruding shaft portion 20, and the falling-off in the shaking process is prevented.

A heat radiation fan 13 is further installed at a position of the motor spindle 2 close to the other end, a tail cover 12 of the motor is covered outside the heat radiation fan 13, and a through hole for the protruding shaft part 20 to penetrate out is formed in the tail cover 12 of the motor. And, protruding axle part 20 and the other end welding fixed connection of motor spindle 2 have guaranteed that the joint strength between protruding axle part 20 and the motor spindle 2 is enough big, can reliably transmit the torque power of barring instrument to motor spindle 2.

In other specific embodiments of the motor structure for the flue gas-flue gas heat exchanger of the present invention, in order to meet different requirements, the rotation stopping structure is not limited to the design form of specific embodiment 1, the outline shape of the protruding shaft portion can be designed into a polygonal column, and the edge surface of the protruding shaft portion constitutes the rotation stopping structure; correspondingly, the inner hole of the clamping sleeve of the turning tool is provided with a multi-edge inner wall, and the inner hole of the clamping sleeve is clamped and matched with the multi-edge convex shaft part, so that the purpose that the turning tool is swung to drive the rotor of the flue gas-flue gas heat exchanger to rotate is achieved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A motor structure for a flue gas-flue gas heat exchanger is characterized by comprising a machine shell, a stator installed in the machine shell and a motor main shaft rotatably installed in the machine shell, wherein one end of the motor main shaft extends to the outside of the machine shell, and one end of the motor main shaft is in transmission connection with a rotor of the flue gas-flue gas heat exchanger;

2. The motor structure for the flue gas-flue gas heat exchanger as claimed in claim 1, wherein the rotation stopping structure is a protruding block protruding from the outer peripheral surface of the protruding shaft portion, and the protruding block is used for being engaged with a slot on a turning tool.

3. The motor structure for a flue-gas heat exchanger according to claim 2, wherein at least two of the convex blocks are provided in central symmetry with respect to the axis of the motor main shaft.

4. The motor structure for a flue gas-flue gas heat exchanger according to any one of claims 1 to 3, wherein the protruding length of the protruding shaft portion extending to the outside of the tail cover of the motor is not less than 30 mm.

5. The motor structure for a flue gas-flue gas heat exchanger according to any one of claims 1 to 3, wherein the protruding length of the protruding shaft portion extending to the outside of the tail cover of the motor is any size between 30mm and 100 mm.

6. The motor structure for the flue gas-flue gas heat exchanger as claimed in claim 1, wherein a heat dissipation fan is further installed at a position close to the other end of the motor main shaft, a tail cover of the motor is covered outside the heat dissipation fan, and a through hole for the protruding shaft to penetrate out is formed in the tail cover of the motor.

7. The motor structure for the flue gas-flue gas heat exchanger as claimed in claim 1, wherein the protruding shaft portion is fixedly connected with the other end of the motor main shaft by welding.

8. The electric motor structure for a flue gas-flue gas heat exchanger of claim 1, wherein the profile shape of the convex shaft part is a polygonal prism, and the prism surface of the convex shaft part forms the rotation stopping structure.