CN111267041A - Roots compressor bearing seat dismounting device for nuclear power station and dismounting method thereof - Google Patents

Abstract

The invention belongs to the technical field of nuclear power station compressor bearing dismounting, and particularly relates to a roots compressor bearing seat dismounting device for a nuclear power station and a dismounting method thereof, wherein the dismounting method comprises the following steps: take-out device and synchronizer, the take-out device includes: the device comprises a support, a thrust screw arranged in the middle of the support and fastening screws arranged on two sides of the support; the synchronization device includes: the worm gear is arranged at the input end of the driving shaft and meshed with the worm, the fastening sleeve is arranged at the output end of the driving shaft, one end of the worm is arranged above the inside of the transmission case, and the other end of the worm is arranged outside the transmission case; and the thrust screw on the taking-out device is tightly matched and connected with the fastening sleeve on the synchronizing device.

Description

A kind of dismantling device and dismantling method of Roots compressor bearing seat for nuclear power plant

technical field

The invention belongs to the technical field of bearing disassembly of a nuclear power plant compressor, and in particular relates to a disassembly device for a bearing seat of a Roots compressor used in a nuclear power plant and a disassembly method thereof.

Background technique

The first phase of a nuclear power plant is equipped with 28 Roots compressors, which are mainly used to provide power for radioactive gas sampling, purification and exhaust systems. When the existing Roots compressor is disassembled and repaired, a relatively complicated and very important maintenance procedure is involved, that is, the correct and quick disassembly of the compressor bearing seat. When the bearing seat is normally disassembled, it needs to exert force from the left and right ends at the same time and keep the bearing seat horizontal, and remove the bearing seat slowly and smoothly. Evenly, the bearing seat is skewed and stuck, which increases the difficulty of disassembly, reduces work efficiency, and easily causes damage to the sealing surface of the bearing end cover and surrounding equipment.

Therefore, it is necessary to design an efficient and safe Roots compressor bearing seat disassembly device and its disassembly method in view of the above technical problems, so as to improve the above-mentioned deficiencies of the prior art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to design a Roots compressor bearing seat disassembly device for nuclear power plants and a disassembly method thereof, which are used to effectively solve the technical problems of difficult disassembly of the bearing seat, complicated disassembly process and low safety.

Technical scheme of the present invention:

A dismantling device for a bearing seat of a Roots compressor for a nuclear power plant, comprising: a take-out device and a synchronizing device, the take-out device comprises: a support 1, a thrust screw 2 arranged in the middle of the support 1, and a thrust screw 2 arranged on both sides of the support 1 The synchronizing device includes: a transmission case 4, a worm 6, a drive shaft 12 arranged below the inside of the transmission case, a worm wheel 9 arranged at the input end of the drive shaft 12 and engaged with the worm 6, and a The fastening sleeve 13 of the output end of the drive shaft 12 and the worm 6 are arranged above the inside of the transmission box 4 at one end, and the other end is arranged outside the transmission box 4; The sleeve 13 is tightly fitted.

The middle position of the support 1 is provided with a threaded hole, the thrust screw 2 has an external thread, and the thrust screw 2 is threadedly connected to the middle position of the support 1; the bottom of the fastening screw 3 is provided with external threads for matching the bearing The threaded hole on the seat realizes the connection.

The connecting end of the thrust screw 2 and the middle position of the support 1 is the input end of the thrust screw 2, and the input end of the thrust screw 2 is hexagonal.

The transmission case 4 is also provided with a transmission bearing cover plate 14; the output end of the drive shaft 12 is provided with an external thread, the upper end of the fastening sleeve 13 is provided with an internal thread, and the output end of the drive shaft 12 is connected with the fastener. The upper end of the fixing sleeve 13 is connected by threads.

Both ends of the worm 6 are provided with driving bearings 5, and the driving bearing 5 is also provided with a driving bearing cover plate 16; the driving bearing 5 is fixed by the driving bearing cover plate 16; the upper and lower ends of the worm wheel 9 are A driving side bearing 7 and a non-driving side bearing 11 are respectively provided, and a driving side bushing 8 is also arranged between the driving side bearing 7 and the upper end of the worm wheel 9 , and the driving side bearing 7 is fixed by the driving side bushing 8 .

A non-drive side bushing 10 is also provided between the non-drive side bearing 11 and the lower end of the worm wheel 9; the non-drive side bearing 11 is fixed by the non-drive side bushing 10 and the transmission bearing cover 14; the transmission bearing cover 14 and the drive bearing cover plate 16 are provided with fastening bolts 15.

The end of the worm 6 arranged outside the transmission box 4 is the input end, and the input end of the worm 6 is hexagonal; the lower part of the fastening sleeve 13 is the output end, and the output end of the fastening sleeve 13 is an inner hexagon. shape.

Any of the above-mentioned methods for disassembling a Roots compressor bearing housing disassembly device for a nuclear power plant, comprising the following steps:

Step 1: When in use, adjust the thrust screw 2 to a suitable position, and screw it into the thread along the threaded hole on the support 1 to ensure that the thrust screw 2 is in contact with the shaft of the Roots compressor. Realize the connection between the support 1, the tightening screw 3 and the bearing seat of the Roots compressor;

Step 2: When disassembling the bearing seat, use a wrench to rotate the nut on the worm 6, and with the help of the worm gear and worm drive, output a uniform rotational force along the worm gear 9, the drive shaft 12, and the tightening sleeve 13, and then rotate the screw on the thrust screw 2. The cap makes the bearing seat of the Roots compressor generate an equal and uniform vertical upward force, and finally realizes the disassembly of the bearing seat.

Beneficial effects of the present invention: The present invention designs a dismounting device for a bearing seat of a Roots compressor used in a nuclear power plant. The device has a simple structure, saves time and effort, and has high work efficiency, and can ensure that the entire bearing seat remains horizontal during the disassembling process of the bearing seat. , reduce the probability of being stuck due to the deflection of the bearing seat, the disassembly device will not cause damage to the sealing surface of the bearing seat and the surrounding equipment, and can protect the sealing surface of the bearing end cover and the surrounding equipment from damage;

Through the worm drive, the present invention can effectively solve the problem of difficult disassembly of the bearing seat, ensure uniform force during disassembly and high work efficiency; in addition, the disassembly method of the bearing seat disassembly device for a Roots compressor for a nuclear power plant designed by the present invention is easy for staff to operate .

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a dismounting device for a Roots compressor bearing seat for a nuclear power plant according to the present invention;

FIG. 2 is a front view of a synchronizing device of a Roots compressor bearing housing dismantling device for nuclear power plants according to the present invention;

Fig. 3 is a side view of the synchronizing device of Fig. 2 which is a Roots compressor bearing seat dismantling device for a nuclear power plant according to the present invention.

Among them: 1. Support; 2. Thrust screw; 3. Fastening screw; 4. Transmission box; 5. Drive bearing; 6. Worm; 7. Drive-side bearing; 8. Drive-side bushing; 9. Worm gear; 10 , Non-drive side bushing; 11, Non-drive side bearing; 12, Drive shaft; 13, Fastening sleeve; 14, Drive bearing cover; 15, Fastening bolt; 16, Drive bearing cover.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the present invention is further introduced:

A dismantling device for a bearing seat of a Roots compressor for a nuclear power plant, comprising: a take-out device and a synchronizing device, the take-out device comprises: a support 1, a thrust screw 2 arranged in the middle of the support 1, and a thrust screw 2 arranged on both sides of the support 1 The synchronizing device includes: a transmission case 4, a worm 6, a drive shaft 12 arranged below the inside of the transmission case, a worm wheel 9 arranged at the input end of the drive shaft 12 and engaged with the worm 6, and a The fastening sleeve 13 of the output end of the drive shaft 12 and the worm 6 are arranged above the inside of the transmission box 4 at one end, and the other end is arranged outside the transmission box 4; the thrust screw 2 on the take-out device is fastened with the synchronization device The sleeve 13 is tightly fitted.

The middle position of the support 1 is provided with a threaded hole, the thrust screw 2 has an external thread, and the thrust screw 2 is threadedly connected to the middle position of the support 1; the bottom of the fastening screw 3 is provided with external threads for matching the bearing The threaded hole on the seat realizes the connection.

The connecting end of the thrust screw 2 and the middle position of the support 1 is the input end of the thrust screw 2, and the input end of the thrust screw 2 is hexagonal.

The transmission case 4 is also provided with a transmission bearing cover plate 14; the output end of the drive shaft 12 is provided with an external thread, the upper end of the fastening sleeve 13 is provided with an internal thread, and the output end of the drive shaft 12 is connected with the fastener. The upper end of the fixing sleeve 13 is connected by threads.

Both ends of the worm 6 are provided with driving bearings 5, and the driving bearing 5 is also provided with a driving bearing cover plate 16; the driving bearing 5 is fixed by the driving bearing cover plate 16; the upper and lower ends of the worm wheel 9 are A driving side bearing 7 and a non-driving side bearing 11 are respectively provided, and a driving side bushing 8 is also arranged between the driving side bearing 7 and the upper end of the worm wheel 9 , and the driving side bearing 7 is fixed by the driving side bushing 8 .

A non-drive side bushing 10 is also provided between the non-drive side bearing 11 and the lower end of the worm wheel 9; the non-drive side bearing 11 is fixed by the non-drive side bushing 10 and the transmission bearing cover 14; the transmission bearing cover 14 and the drive bearing cover plate 16 are provided with fastening bolts 15.

The end of the worm 6 arranged outside the transmission box 4 is the input end, and the input end of the worm 6 is hexagonal; the lower part of the fastening sleeve 13 is the output end, and the output end of the fastening sleeve 13 is an inner hexagon. shape. The output end of the fastening sleeve 13 is closely matched with the input end of the thrust screw 2 .

Any of the above-mentioned methods for disassembling a Roots compressor bearing housing disassembly device for a nuclear power plant, comprising the following steps:

Step 1: When in use, adjust the thrust screw 2 to a suitable position, and screw it into the thread along the threaded hole on the support 1 to ensure that the thrust screw 2 is in contact with the shaft of the Roots compressor. Realize the connection between the support 1, the tightening screw 3 and the bearing seat of the Roots compressor;

Step 2: When disassembling the bearing seat, use a wrench to rotate the nut on the worm 6, and with the help of the worm gear and worm drive, output a uniform rotational force along the worm gear 9, the drive shaft 12, and the tightening sleeve 13, and then rotate the screw on the thrust screw 2. The cap makes the bearing seat of the Roots compressor generate an equal and uniform vertical upward force, and finally realizes the disassembly of the bearing seat.

The present invention has been described in detail above in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the above-mentioned embodiments, within the scope of knowledge possessed by those of ordinary skill in the art, it can also be made without departing from the purpose of the present invention. Various changes. The content that is not described in detail in the present invention can use the prior art.

Claims (8)

1. A device for disassembling a bearing seat of a Roots compressor for a nuclear power plant, characterized in that it comprises: a take-out device and a synchronizing device, the take-out device comprising: a support (1), a thrust force arranged in the middle of the support (1) a screw (2) and a tightening screw (3) arranged on both sides of the support (1); the synchronizing device comprises: a transmission case (4), a worm (6), a drive shaft (3) arranged below the inside of the transmission case 12), a worm wheel (9) arranged at the input end of the drive shaft (12) and engaged with the worm (6), and a tightening sleeve (13) arranged at the output end of the drive shaft (12), the worm (6) One end is arranged above the inside of the transmission case (4), and the other end is arranged outside the transmission case (4). 2 . The device for disassembling a bearing seat of a Roots compressor for a nuclear power plant according to claim 1 , wherein a threaded hole is provided in the middle of the support ( 1 ), and the thrust screw ( 2 ) has an external thread. 3 . , the thrust screw (2) is threadedly connected at the middle position of the support (1); the bottom of the tightening screw (3) is provided with an external thread, which is used to cooperate with the threaded hole on the bearing seat to realize the connection. 3. The device for disassembling a bearing seat of a Roots compressor for a nuclear power plant according to claim 2, wherein the connecting end of the thrust screw (2) and the middle position of the support (1) is the end of the thrust screw (2). The input end, the input end of the thrust screw (2) is hexagonal. 4. The device for disassembling a bearing seat of a Roots compressor for a nuclear power plant according to claim 1, characterized in that: the transmission case (4) is further provided with a transmission bearing cover plate (14); the drive shaft ( The output end of 12) is provided with external threads, the upper end of the tightening sleeve (13) is provided with internal threads, and the output end of the drive shaft (12) is connected with the upper end of the tightening sleeve (13) by threads. 5. The device for disassembling a bearing seat of a Roots compressor for a nuclear power plant according to claim 4, characterized in that: both ends of the worm (6) are provided with drive bearings (5), and the drive bearings (5) are provided with drive bearings (5). A driving bearing cover plate (16) is also provided; the driving bearing (5) is fixed by the driving bearing cover plate (16); the upper and lower ends of the worm wheel (9) are respectively provided with driving side bearings (7) and A non-driving side bearing (11), a driving side bushing (8) is further provided between the driving side bearing (7) and the upper end of the worm wheel (9), the driving side bearing (7) passing through the driving side bushing ( 8) Fixed. 6. A device for disassembling a bearing seat of a Roots compressor for a nuclear power plant according to claim 5, characterized in that a non-driving side bearing (11) and the lower end of the worm gear (9) are further provided with a non-driving side The shaft sleeve (10); the non-drive side bearing (11) is fixed by the non-drive side shaft sleeve (10) and the transmission bearing cover plate (14); on the transmission bearing cover plate (14) and the drive bearing cover plate (16) There are fastening bolts (15). 7. The device for disassembling a bearing seat of a Roots compressor for a nuclear power plant according to claim 6, characterized in that: one end of the worm (6) disposed outside the transmission case (4) is an input end, and the worm (6) is an input end. 6) The input end is in a hexagonal shape; the lower part of the fastening sleeve (13) is an output end, and the output end of the fastening sleeve (13) is in an inner hexagonal shape. 8. The disassembly method of any one of the nuclear power plant bearing housing disassembly devices for Roots compressors according to any one of claims 1 to 7, characterized in that, comprising the following steps: Step 1: When in use, adjust the thrust screw (2) to a suitable position, and screw the thread along the threaded hole on the support (1) to ensure that the thrust screw (2) is in contact with the shaft of the Roots compressor, and at the same time, tighten the screw. (3) The connection between the support (1), the tightening screw (3) and the bearing seat of the Roots compressor is realized by screwing together; Step 2: When removing the bearing seat, use a wrench to rotate the nut on the worm (6), and use the worm gear to drive the worm gear (9), the drive shaft (12), and the tightening sleeve (13) to output a uniform rotational force. Then, the nut on the thrust screw (2) is rotated, so that the bearing seat of the Roots compressor generates an equal and uniform vertical upward force, and finally the bearing seat is disassembled.

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