阅读说明：本技术 一种核设施金属管道切割拆除装置及方法 (Nuclear facility metal pipeline cutting and dismantling device and method ) 是由 丁然 袁和川 文小军 张永领 杨建� 孙志军 隆涛 王帅 孙宇 张中亮 杨学耕 于 2021-08-26 设计创作，主要内容包括：本发明公开了一种核设施金属管道切割拆除装置及方法,切割拆除装置,包括动力部件、传动部件、进给部件、支撑部件和切割部件；支撑部件包括外支撑管；传动部件包括长轴,长轴同轴设置在外支撑管内侧,长轴一端与传动机构连接,另一端与切割部件连接；动力部件用于驱动传动机构；进给部件包括进给轴,进给轴同轴设置在长轴内侧,进给轴一端伸出长轴与操作机构连接,另一端伸入切割部件内部且设置有楔形螺母；切割部件包括支撑滚筒,支撑滚筒一端与长轴连接,另一端设置有端盖,支撑滚筒的侧壁上设置有可沿着支撑滚筒径向伸缩的刀具,所述刀具在楔形螺母的作用下伸出支撑滚筒。本发明解决了核设施金属管道拆除难度大、效率低的问题。(The invention discloses a device and a method for cutting and dismantling a metal pipeline of a nuclear facility, wherein the device for cutting and dismantling comprises a power part, a transmission part, a feeding part, a supporting part and a cutting part; the support member includes an outer support tube; the transmission component comprises a long shaft, the long shaft is coaxially arranged on the inner side of the outer supporting tube, one end of the long shaft is connected with the transmission mechanism, and the other end of the long shaft is connected with the cutting component; the power component is used for driving the transmission mechanism; the feeding component comprises a feeding shaft which is coaxially arranged on the inner side of the long shaft, one end of the feeding shaft extends out of the long shaft and is connected with the operating mechanism, and the other end of the feeding shaft extends into the cutting component and is provided with a wedge-shaped nut; the cutting part comprises a supporting roller, one end of the supporting roller is connected with the long shaft, the other end of the supporting roller is provided with an end cover, a cutter which can stretch out and draw back along the radial direction of the supporting roller is arranged on the side wall of the supporting roller, and the cutter extends out of the supporting roller under the action of a wedge-shaped nut. The invention solves the problems of high difficulty and low efficiency in dismantling the metal pipeline of the nuclear facility.)

1. A device for cutting and dismantling a metal pipeline of a nuclear facility is characterized by comprising a power component (1), a transmission component (2), a feeding component (3), a supporting component (4) and a cutting component (5);

the support member (4) comprises an outer support tube (46);

the transmission component (2) comprises a long shaft (23), the long shaft (23) is coaxially arranged on the inner side of the outer support pipe (46), one end of the long shaft (23) extends out of the outer support pipe (46) to be connected with the transmission mechanism, and the other end of the long shaft (23) extends out of the outer support pipe (46) to be connected with the cutting component (5);

the power component (1) is used for driving a transmission mechanism;

the feeding component (3) comprises a feeding shaft (34), the feeding shaft (34) is coaxially arranged on the inner side of the long shaft (23), one end of the feeding shaft (34) extends out of the long shaft (23) to be connected with the operating mechanism, and the other end of the feeding shaft (34) extends into the cutting component (5) and is provided with a wedge-shaped nut (36);

the cutting part (5) comprises a supporting roller (52), one end of the supporting roller (52) is connected with the long shaft (23), the other end of the supporting roller is provided with an end cover (54), a cutter (53) capable of radially extending and retracting along the supporting roller (52) is arranged on the side wall of the supporting roller (52), and the cutter (53) extends out of the supporting roller (52) under the action of a wedge-shaped nut (36).

2. The nuclear power plant metal pipeline cutting and dismantling device as claimed in claim 1, wherein one end of the support roller (52) is provided with a long shaft connecting cylinder (51), an inner diameter of the long shaft connecting cylinder (51) is larger than that of the support roller (52), an annular step is formed between an end of the support roller (52) and an inner wall of the long shaft connecting cylinder (51), and an end of the long shaft (23) is fixed on the annular step.

3. The cutting and dismantling device for the metal pipeline of the nuclear power facility according to the claim 1, characterized in that the two ends of the outer supporting pipe (46) are provided with expansion guide ports (48), a pipe orifice bearing seat (45) is arranged in the expansion guide port (48) near one end of the operating mechanism, the pipe orifice bearing seat (45) is fixed in the expansion guide port (48) through a clamping component, and the inner wall of the outer supporting pipe (46) is provided with an inner pipe bearing seat (47);

and a pipe orifice bearing (22) and a pipe inner bearing (24) which are matched with the pipe orifice bearing seat (45) and the pipe inner bearing seat (47) are respectively arranged on the long shaft (23).

4. The nuclear facility metal pipe cutting demolition device according to claim 3, wherein the clamping member includes an expansion screw (41), a lock nut (42), a washer (43), and a nut sleeve (44);

the nut sleeve (44) is arranged on the outer side of the pipe orifice bearing seat (45), one end of the expansion screw rod (41) is inserted into the pipe orifice bearing seat (45), the other end of the expansion screw rod is arranged to be a threaded section, the locking nut (42) is screwed on the threaded section, and the gasket (43) is arranged between the locking nut (42) and the nut sleeve (44).

5. The nuclear facility metal pipeline cutting and dismantling device as claimed in claim 4, wherein the expansion screw (41) is provided with a plurality of slots circumferentially through the outer wall of the pipe orifice bearing seat (45), and the inner wall of the pipe orifice bearing seat (45) is provided with protrusions matched with the slots.

6. The nuclear facility metal pipe cutting and dismantling device according to claim 1, wherein an end of said feed shaft (34) extending out of said long shaft (23) is provided with a feed bearing (32), and an outer side of said feed bearing (32) is provided with a feed bearing seat (33).

7. The nuclear facility metal pipeline cutting and dismantling device as claimed in claim 1, wherein said transmission mechanism includes a driven gear connected to the long shaft (23) through a driven gear shaft (21); the power component (1) comprises a motor (11), an inner coupler (12) and a driving gear, the driving gear is connected with the motor (11) through a driving gear shaft (13), the inner coupler (12) is arranged on the driving gear shaft (13), and the driving gear is meshed with a driven gear.

8. The cutting and dismantling device for metal pipes of nuclear power plants according to claim 1, characterized in that the outer wall of said long shaft (23) is provided with a positioning bearing (35), said positioning bearing (35) being placed inside the outer support pipe (46).

9. The nuclear power plant metal pipe cutting and dismantling device according to any one of claims 1 to 8, wherein said operating mechanism is a hand wheel (31), further comprising a control system for controlling the power unit (1).

10. The cutting method of the nuclear facility metal pipeline cutting and dismantling device based on any one of claims 1 to 9, characterized by comprising the following steps:

s1, lifting the whole cutting and dismantling device and installing the device on the metal pipeline to be cut so that the cutting part (5) is inserted into the metal pipeline to be cut;

s2, operating the feeding component (3) to enable the cutter (53) to extend out of the supporting roller (52);

s3, starting the power component (1), enabling the power component (1) to drive the transmission component (2) to rotate, and further driving the cutting component (5) to rotate to realize the cutting of the metal pipeline to be cut.

Technical Field

The invention relates to the technical field of nuclear facility decommissioning and maintenance, in particular to a device and a method for cutting and dismantling a metal pipeline of a nuclear facility.

Background

In the nuclear facility decommissioning and maintenance process, the removal of radioactive metal pipelines is an important work. The metal pipeline in the nuclear facility has the phenomenon of radioactive pollution along with the long-time operation of the nuclear facility, the pipeline irradiated by neutrons also has the phenomenon of activation, the radiation level is high, and the short-distance operation of personnel is not facilitated. In some nuclear facility factory buildings and laboratories, pipeline arrangement is often irregular, pipeline installation span is large, the space around the pipeline is narrow and small, the problems that the equipment installation is inconvenient in the dismantling process, personnel have no operation space, the dismantling difficulty is large, and parts of dismantling positions are inaccessible are caused.

Based on the reasons, it is necessary to develop a nuclear facility metal pipeline cutting and dismantling device, which solves the problems of high dismantling difficulty and low efficiency, and reduces the irradiated dose of personnel in the dismantling implementation process.

Disclosure of Invention

The invention aims to provide a device and a method for cutting and dismantling a metal pipeline of a nuclear facility, which solve the problems of high difficulty and low efficiency in dismantling the metal pipeline of the nuclear facility.

The invention is realized by the following technical scheme:

a nuclear facility metal pipeline cutting and dismantling device comprises a power component, a transmission component, a feeding component, a supporting component and a cutting component;

the support member comprises an outer support tube;

the transmission component comprises a long shaft, the long shaft is coaxially arranged on the inner side of the outer supporting tube, one end of the long shaft extends out of the outer supporting tube and is connected with the transmission mechanism, and the other end of the long shaft extends out of the outer supporting tube and is connected with the cutting component;

the power component is used for driving the transmission mechanism;

the feeding component comprises a feeding shaft which is coaxially arranged on the inner side of the long shaft, one end of the feeding shaft extends out of the long shaft and is connected with the operating mechanism, and the other end of the feeding shaft extends into the cutting component and is provided with a wedge-shaped nut;

the cutting part comprises a supporting roller, one end of the supporting roller is connected with the long shaft, the other end of the supporting roller is provided with an end cover, a cutter which can stretch out and draw back along the radial direction of the supporting roller is arranged on the side wall of the supporting roller, and the cutter extends out of the supporting roller under the action of a wedge-shaped nut.

The cutting part of the invention extends into the metal pipeline through the long shaft, the long shaft is rotated at high speed through the transmission part of the cutting device, and simultaneously, the cutter is driven to rotate at high speed in the pipeline to realize cutting, thus the invention has the advantage of rapid cutting, and the power part of the invention can adopt automatic control.

In conclusion, the invention solves the problem of high difficulty in dismantling the metal pipeline of the nuclear facility, improves the automation level of dismantling operation, reduces operation risk and operation difficulty, protects the safety of operators and reduces the irradiated dose of the operators.

Furthermore, a long shaft connecting cylinder is arranged at one end of the supporting roller, the inner diameter of the long shaft connecting cylinder is larger than that of the supporting roller, an annular step is formed between the end of the supporting roller and the inner wall of the long shaft connecting cylinder, and the end of the long shaft is fixed on the annular step.

The stability that long axis and cutting element are connected can be improved to above-mentioned setting, guarantees that the cutting head does not take place the phenomenon of drunkenness, back off the sword in the cutting process.

Furthermore, expansion guide ports are formed in two ends of the outer support pipe, a pipe orifice bearing seat is arranged in the expansion guide port close to one end of the operating mechanism, the pipe orifice bearing seat is fixed in the expansion guide ports through a clamping component, and an inner pipe bearing seat is arranged on the inner wall of the outer support pipe;

and the long shaft is respectively provided with a pipe orifice bearing and a pipe inner bearing which are matched with the pipe orifice bearing seat and the pipe inner bearing seat.

Above-mentioned setting can be through mouth of pipe bearing frame extrusion inflation guiding opening messenger's inflation and the metal pipeline inner wall that treats the cutting closely cooperate, realize fixing whole device in the metal pipeline that treats the cutting.

Further, the clamping component comprises an expansion screw rod, a locking nut, a washer and a nut sleeve;

the nut sleeve is arranged on the outer side of the pipe orifice bearing seat, one end of the expansion screw rod is inserted into the pipe orifice bearing seat, the other end of the expansion screw rod is arranged to be a threaded section, the locking nut is screwed on the threaded section, and the washer is arranged between the locking nut and the nut sleeve.

The clamping component realizes that the pipe orifice bearing block extrudes and expands the guide orifice to expand the guide orifice.

Furthermore, the expansion screw penetrates through the outer wall of the pipe orifice bearing seat and is circumferentially provided with a plurality of clamping grooves, and the inner wall of the pipe orifice bearing seat is provided with bulges matched with the clamping grooves.

Furthermore, a feeding bearing is arranged at one end of the feeding shaft extending out of the long shaft, and a feeding bearing seat is arranged outside the feeding bearing.

Further, the transmission mechanism comprises a driven gear, and the driven gear is connected with the long shaft through a driven gear shaft; the power part comprises a motor, an inner coupler and a driving gear, the driving gear is connected with the motor through a driving gear shaft, the driving gear shaft is provided with the inner coupler, and the driving gear is meshed with the driven gear.

Further, the outer wall of the long shaft is provided with a positioning bearing, and the positioning bearing is arranged in the outer supporting pipe.

Further, the operating mechanism is a hand wheel and further comprises a control system for controlling the power component.

The cutting method based on the nuclear facility metal pipeline cutting and dismantling device comprises the following steps:

s1, lifting the whole cutting and dismantling device and installing the device on the metal pipeline to be cut so that the cutting part is inserted into the metal pipeline to be cut;

s2, operating the feeding component to extend the cutter out of the supporting roller;

s3, starting the power component, enabling the power component to drive the transmission component to rotate, and further driving the cutting component to rotate to cut the metal pipeline to be cut.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the invention has the advantages of high automation degree, simple operation, convenient installation and good environmental adaptability.

2. The invention adopts a sectional fixed structure, can improve the rigidity of the device and solves the problem of unstable remote cutting.

3. The invention reduces the operation difficulty, improves the operation efficiency and reduces the irradiated dose of the operators.

4. The device is simple to install and operate, is suitable for cutting and dismantling pipelines with different calibers, and has strong environmental adaptability.

5. The cutting device can be stored in blocks after being disassembled, and does not occupy a large amount of space.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a front view of a nuclear facility metal pipeline cutting and dismantling device of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a partial schematic structural view of a nuclear facility metal pipeline cutting and dismantling device;

fig. 4 is a schematic structural diagram of a nuclear facility metal pipeline cutting and dismantling device.

Reference numbers and corresponding part names in the drawings:

1-power part, 2-transmission part, 3-feeding part, 4-support part, 5-cutting part, 11-motor, 12-internal coupling, 13-driving gear shaft, 21-driven gear shaft, 22-orifice bearing, 23-long shaft, 24-internal bearing, 31-hand wheel, 32-feeding bearing, 33-feeding bearing seat, 34-feeding shaft, 35-positioning bearing, 36-wedge nut, 41-expansion screw, 42-locking nut, 43-gasket, 44-nut sleeve, 45-orifice bearing seat, 46-external support pipe, 47-internal bearing seat, 48-expansion guide orifice, 51-long shaft connecting cylinder, 52-support roller, 53-cutter, 54-end cap.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1:

as shown in fig. 1-4, a cutting and dismantling device for a metal pipeline of a nuclear facility comprises a power component 1, a transmission component 2, a feeding component 3, a supporting component 4 and a cutting component 5;

the support member 4 comprises an outer support tube 46;

the transmission component 2 comprises a long shaft 23, the long shaft 23 is coaxially arranged on the inner side of the outer support pipe 46, one end of the long shaft 23 extends out of the outer support pipe 46 and is connected with the transmission mechanism, and the other end of the long shaft 23 extends out of the outer support pipe 46 and is connected with the cutting component 5;

the power component 1 is used for driving a transmission mechanism;

the feeding component 3 comprises a feeding shaft 34, the feeding shaft 34 is coaxially arranged on the inner side of the long shaft 23, one end of the feeding shaft 34 extends out of the long shaft 23 to be connected with the operating mechanism, and the other end of the feeding shaft 34 extends into the cutting component 5 and is provided with a wedge-shaped nut 36;

the cutting component 5 comprises a supporting roller 52, one end of the supporting roller 52 is connected with the long shaft 23, the other end of the supporting roller is provided with an end cover 54, a cutter 53 which can extend and retract along the radial direction of the supporting roller 52 is arranged on the side wall of the supporting roller 52, and the cutter 53 extends out of the supporting roller 52 under the action of the wedge nut 36.

In the present embodiment, the transmission mechanism includes a driven gear connected to the long shaft 23 through a driven gear shaft 21; the power part 1 comprises a motor 11, an inner coupler 12 and a driving gear, the driving gear is connected with the motor 11 through a driving gear shaft 13, the inner coupler 12 is arranged on the driving gear shaft 13, the driving gear is meshed with a driven gear, the number of teeth of the driving gear is matched with the number of teeth of the driven gear according to a reduction ratio, the best transmission torque can be obtained, and the gear transmission is adopted and has the characteristic of stable transmission.

In this embodiment, the supporting member 4 is located at the outermost side of the cutting device, and plays a role in improving the rigidity of the cutting device, and includes an expansion screw 41, a lock nut 42, a washer 43, a nut sleeve 44, a nozzle bearing seat 45, an outer supporting tube 46, an inner tube bearing seat 47, and an expansion guide port 48, wherein the expansion guide ports 48 are respectively arranged at two ends of the outer supporting tube 46, the nozzle bearing seat 45 is arranged in the expansion guide port 48 near one end of the operating mechanism, the nozzle bearing seat 45 is fixed in the expansion guide port 48 through a clamping member, and the inner wall of the outer supporting tube 46 is provided with the inner tube bearing seat 47; the long shaft 23 is respectively provided with a pipe orifice bearing 22 and an inner bearing 24 which are matched with the pipe orifice bearing seat 45 and the inner bearing seat 47; the clamping part comprises an expansion screw 41, a locking nut 42, a washer 43 and a nut sleeve 44;

the nut sleeve 44 is arranged on the outer side of the pipe orifice bearing seat 45, one end of the expansion screw rod 41 is inserted into the pipe orifice bearing seat 45, the other end of the expansion screw rod is provided with a threaded section, the threaded section is connected with the locking nut 42 to play a role of tensioning the nut, and the diameter of the threaded section is reduced by matching the expansion screw rod 41 at the lower end with the installation thread section, so that the fastening purpose is achieved; the locking nut 42 is screwed on the threaded section, and the washer 43 is arranged between the locking nut 42 and the nut sleeve 44; the locking nut 42 is used for pressing the nut sleeve 44 and the pipe orifice bearing seat 45 on the outer supporting pipe 46; the washer 43 plays a role in preventing looseness, and a spring washer is selected; the port bearing support 45 and the outer support tube 46 are connected into a whole to play a role of fixing a position, 3 long grooves are uniformly formed on the circumference of the corresponding position of the expansion screw rod 41 during connection, 3 bosses are designed on the excircle of the port bearing sleeve 45, and the expansion screw rod 41, the port bearing sleeve 45 and the outer support tube 46 are connected into a whole through the 3 long grooves and the 3 bosses on the circumference.

In this embodiment, the supporting roller 52 is a mounting bracket for the cutter 53, and has a mounting cavity for the cutter 53 in the circumferential direction, and is in a symmetrical arrangement structure. The cutter 53 adopts a telescopic structure, and the periphery of the cutter is provided with contact balls which can freely slide along the installation cavity of the supporting roller 52; the end cover 54 is fixedly connected with the lower end of the supporting roller 52 to play a role of sealing.

In the embodiment, one end of the feeding shaft 34 extending out of the long shaft 23 is provided with a feeding bearing 32, and a feeding bearing seat 33 is arranged outside the feeding bearing 32; the outer wall of the long shaft 23 is provided with a positioning bearing 35, and the positioning bearing 35 is arranged in the outer support pipe 46.

In this embodiment, the operating mechanism is a hand wheel 31.

In the present embodiment, the driven gear shaft 21 is the power input end of the transmission member 2, and obtains a larger torque and a certain rotational speed by the variable speed input of the driving gear shaft 13 of the power member 1; the orifice bearing 22 is arranged at the end part of the long shaft 23, plays a supporting role, and the outer side of the orifice bearing is matched with the nut sleeve 44; the long shaft 23 can adopt a segmented connection structure, the long shaft is a stainless steel pipe, the inner diameter of the long shaft is larger than the outer diameter of the feed shaft 34, the feed shaft 34 can rotate in the inner cavity of the long shaft 23, the long shaft 23 is connected with the long shaft connecting cylinder 51 of the cutting head part 5 in an inner and outer slotting mode, stable torque transmission can be guaranteed, and the cutting part is driven to rotate.

In the embodiment, the feeding component 3 is used for gradually ejecting the cutter 53 of the cutting component 5 according to the feeding requirement while the transmission component 2 drives the cutting component 5, so as to cut the interior of the physical measurement pipeline until the interior is cut off; the hand wheel 31 is provided with a handle, so that the operability is improved, and the hand wheel is fixedly connected with one end of the feed shaft 34; the bearing 32 plays a role in supporting and fixing, the inner side of the bearing is matched with the feeding shaft 34, and the outer side of the bearing is matched with the inner cavity of the long shaft 23, so that the rotation of the feeding shaft 34 is realized; the bearing seat 33 is a fixed supporting structure for mounting the bearing 32; one end of the feed shaft 34 is connected with the hand wheel 31, the other end of the feed shaft is a threaded section and is connected with the wedge-shaped nut 36, the wedge-shaped nut 36 can be driven by the rotation of the hand wheel 31, the wedge-shaped nut 36 is further pressed into the inner cavity of the supporting roller 52, the cutter 53 is acted on the inclined surface, the cutter 53 moves along the radial direction (when the hand wheel 31 is rotated, the feed shaft 34 moves downwards by applying a downward pressure at the same time, the wedge-shaped nut 36 is driven to move downwards along the axial direction, the cutter 53 is acted on the inclined surface, and the cutter 53 moves along the radial direction), and the inner wall cutting effect is realized. The positioning bearing 35 acts in concert with the bearing 32 to fixedly support the feed shaft 34 at the lower end.

The cutting method of the embodiment comprises the following steps:

s1, lifting the whole cutting and dismantling device and installing the device on the metal pipeline to be cut so that the cutting part 5 is inserted into the metal pipeline to be cut:

the locking nut 42 is rotated to make the expansion screw rod 41 move upwards, namely move towards the direction of the cutting part 5, the expansion guide port 48 expands, and further the lower section of the outer supporting pipe 46 is opened to be tightly matched with the interior of the metal pipeline to be cut, the lower section is the end of the outer supporting pipe 46 far away from the cutting part 5, the upper part of the invention is one end of the cutting part 5, and the lower part is one end of the power part 1

S2, operating the feeding member 3 to extend the cutter 53 out of the supporting roller 52;

s3, starting the power component 1, enabling the power component 1 to drive the transmission component 2 to rotate, and further driving the cutting component 5 to rotate to realize cutting of the metal pipeline to be cut.

Example 2:

as shown in fig. 1 to 4, in this embodiment, based on embodiment 1, one end of the support roller 52 is provided with a long shaft connection cylinder 51, an inner diameter of the long shaft connection cylinder 51 is larger than an inner diameter of the support roller 52, an annular step is formed between an end of the support roller 52 and an inner wall of the long shaft connection cylinder 51, and an end of the long shaft 23 is fixed on the annular step.

In this embodiment, one end of the long shaft connecting cylinder 51 is fixedly connected to the long shaft 23, and the other end is fixedly connected to the supporting roller 52 by a bolt, so that the transmission of power from the transmission part 2 to the cutting head part 5 can be realized.

Example 3:

as shown in fig. 1 to 4, the present embodiment is based on embodiment 1, and includes a control system for controlling the power unit 1, the control system mainly including a power source, a portable control box, a motor controller, an illumination lamp, and a display device. The power supplies power for the whole platform, and motor controller receives the control signal control motor 11 of portable control box and rotates, and the light is carried the illumination, and display device observes the cutting operation condition in real time.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.