CN109433706B - Gun body for flushing mud slag of tube plate of steam generator with central partition plate - Google Patents
Gun body for flushing mud slag of tube plate of steam generator with central partition plate Download PDFInfo
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- CN109433706B CN109433706B CN201811574982.XA CN201811574982A CN109433706B CN 109433706 B CN109433706 B CN 109433706B CN 201811574982 A CN201811574982 A CN 201811574982A CN 109433706 B CN109433706 B CN 109433706B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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Abstract
The invention belongs to the technical field of overhauling of steam generators of nuclear power plants, in particular relates to a gun body for flushing tube plate sludge of a steam generator with a central baffle, which is used for summarizing and analyzing the structural characteristics of an SG sludge flushing device widely applied at present, and provides a novel structural design of the gun body for flushing sludge by combining the structural characteristics of the SG with the central baffle, aiming at ensuring that the flushing device is compact in structure and realizing the effective application of a sludge gun in a narrow space with the central baffle SG. The gun is characterized by comprising a gun head part, a gun rod part and a gun tail part; the gun head part is fixed at the left end of the gun rod part and is used for spraying high-pressure water to the heat transfer pipe; the left end and the right end of the gun rod part are respectively connected with the gun head part and the gun tail part, and are used for conveying high-pressure water and transmitting the action of the gun tail part to the gun head part; the left end of the gun tail part is fixedly connected with the gun rod part and is used for conveying high-pressure water and transmitting actions to the gun rod part.
Description
Technical Field
The invention belongs to the technical field of overhauling of steam generators of nuclear power plants, and particularly relates to a gun body for flushing tube plate sludge of a steam generator with a central baffle plate.
Background
The steam generator, called SG for short, is one of the key equipment of the nuclear power plant and plays roles of isolation and heat exchange of the primary loop and the secondary loop. Most of SG of the current nuclear power plants adopt a vertical natural circulation structure form with a built-in steam-water separator. In the normal operation of a nuclear power unit, insoluble corrosion products can be generated in SG and water supply systems even if the secondary circuit water chemistry is strictly controlled. The corrosion products are discharged by the sewage disposal system, and are deposited on the surfaces of the SG secondary side tube plates and in gaps of the tube bundles, so that sludge accumulation is formed, and finally the problems of corrosion, heat efficiency reduction, unstable water level and the like of the heat transfer tubes are caused.
The domestic and foreign operation experience shows that the deposit on the upper surface of the tube plate is removed periodically, so that the corrosion and cracking trend of the heat transfer tube can be slowed down. As a periodic measure for SG secondary side maintenance, tube sheet sludge hydraulic flushing is increasingly commonly used in domestic and foreign pressurized water reactor nuclear power plants. The technology utilizes high-pressure water jet to break up the sediment in the tube bundle and wash the sediment to the outer ring gallery, drives the sediment to the suction inlet of the suction system through circulation and sucks the sediment out of the suction system so as to achieve the purpose of removing the sediment on the SG secondary side tube plate.
At present, although some flushing devices are put into practical use in China because of the important significance and the necessity of the hydraulic flushing of the sludge of the SG tube plate, the flushing devices still have problems in the field application process, and particularly for the SG with a central baffle plate, the application problem of the sludge flushing gun in a narrow space cannot be well solved.
Disclosure of Invention
The invention provides a novel mud residue flushing gun body structural design aiming at the structural characteristics of an SG mud residue flushing device widely applied at the present stage and combining the structural characteristics of an SG with a central baffle plate, and aims to ensure that the flushing device has a compact structure and realize the effective application of the mud residue gun in a narrow space with the central baffle plate SG.
The invention is realized in the following way:
a gun body for flushing mud residue of a tube plate of a steam generator with a central baffle plate comprises a gun head part, a gun rod part and a gun tail part; the gun head part is fixed at the left end of the gun rod part and is used for spraying high-pressure water to the heat transfer pipe; the left end and the right end of the gun rod part are respectively connected with the gun head part and the gun tail part, and are used for conveying high-pressure water and transmitting the action of the gun tail part to the gun head part; the left end of the gun tail part is fixedly connected with the gun rod part and is used for conveying high-pressure water and transmitting actions to the gun rod part.
The gun head part comprises a gun head body, a balance block, a first sliding block, a first transmission pull rod, a first sealing ring, a first high-pressure water channel, a bearing, a rotating sleeve and a nozzle; the gun head body is used for providing support for the gun head part and providing a water inlet channel for high-pressure water; the balance weight is arranged at the left part of the rear end of the gun head body and is used for maintaining the balance of the gun head part when the flushing operation is carried out; the first sliding block is arranged in the gun head body, the right end of the first sliding block is fixedly connected with the first transmission pull rod, the lower end of the first sliding block is in sliding connection with the upper end of the rotating sleeve, and the sliding sleeve is rotated through horizontal reciprocating motion of the first sliding block; the right end of the first transmission pull rod extends out of the gun head body and is fixedly connected with the gun rod part, and the right end of the first transmission pull rod is used for transmitting the action of the gun rod part so as to realize the horizontal reciprocating motion of the first sliding block; the first sealing ring is arranged at the connecting part of the gun head body and the gun rod part and used for preventing high-pressure water from flowing out; the first high-pressure water channel is arranged at the right part of the gun head body and is used for passing high-pressure water; the rotating sleeve is arranged in the gun head body, is connected with the gun head body through bearings arranged at two ends and rotates along the axis; the nozzle is fixed at the lower end of the rotating sleeve and is used for jetting high-pressure water to the heat transfer pipe.
The balance weight is cylindrical as a whole, when the pressure of high-pressure water rises, the balance weight is driven to extend out of the rear end surface and tightly prop against the central partition board, and the reaction of water jet is transmitted to the central partition board through the balance weight, so that balance is realized; when the high-pressure water pressure is released, the balance weight can retract and separate from the central partition plate under the action of the spring, and the stepping movement of the gun head body cannot be influenced.
When the first sliding block is positioned at the left end of the rotating sleeve, the spray head is in a retracted state; when the first sliding block slides to the right end of the rotating sleeve under the drive of the transmission pull rod, the spray head is in a working state and is aligned to the direction of the heat transfer pipe.
The gun rod part comprises a gun rod body, a second high-pressure water channel, a second transmission pull rod, a first connecting screw, a first locating pin, a first screw limiting block and a second sealing ring; two horizontal channels are arranged in the gun rod body, the upper channel is used for penetrating through the second transmission pull rod, and the lower channel is a second high-pressure water channel; the second high-pressure water channel is used for transmitting high-pressure water, the left end of the second transmission pull rod is fixedly connected with the right end of the first transmission pull rod, and the right end of the second transmission pull rod is fixedly connected with the gun tail part and used for transmitting the action of the gun tail part to the first transmission pull rod; the first connecting screw is arranged on the left end face of the gun rod body and used for realizing fixed connection with the gun head body; the first locating pin is arranged on the left end face of the gun rod body and used for realizing locating when the gun rod body and the gun head body are installed; the first screw limiting block is arranged at the right end of the first connecting screw, and the right end of the first screw limiting block is tightly propped against the gun rod body and is used for preventing the first connecting screw from falling out; the second sealing ring is arranged at the connecting part of the gun rod body and the gun tail part and used for preventing high-pressure water from flowing out.
The second transmission pull rod is integrally cylindrical, a cross-shaped connecting joint is arranged at the left end and used for realizing lap joint with the first transmission pull rod, and an arc-shaped groove is formed in the right end from top to bottom and used for connecting a gun tail part.
The gun tail part comprises a gun tail body, a second locating pin, a second connecting screw, a screw limiting block, a second sliding block, a screw rod, a motor, an adjusting hand wheel, a high-pressure water joint, a third high-pressure water channel and a third transmission pull rod; the lower part of the gun tail body is provided with an inverted L-shaped channel along the length direction, and the channel is a third high-pressure water channel which is communicated with the first high-pressure water channel and the second high-pressure water channel; the second connecting screw is arranged on the left end face of the gun tail body and is used for fixedly connecting the gun tail body with the gun rod body; the second locating pin is arranged on the left end face of the gun tail body and used for realizing locating when the gun tail body and the gun rod body are installed; the second screw limiting block is arranged at the right end of the second connecting screw, and the right end of the second screw limiting block is tightly propped against the gun tail body and is used for preventing the second connecting screw from falling out; the second sliding block is arranged on the screw rod and used for pushing the third transmission pull rod to do horizontal reciprocating motion; the left end of the screw rod is connected with the gun tail body, the right end of the screw rod is connected with the motor, and the screw rod is driven by the motor to rotate so as to realize the horizontal reciprocating motion of the second sliding block; the lower end of the motor is fixedly connected with the gun tail body, the right end of the motor is provided with an adjusting hand wheel, and the motor drives the screw rod to rotate through a bevel gear; the high-pressure water connector is fixed at the water inlet of the third high-pressure water channel at the lower end of the gun tail body and is used for connecting a high-pressure water source; the left end of the third transmission pull rod is fixedly connected with the right end of the second transmission pull rod, and the right end of the third transmission pull rod is fixedly connected with the second sliding block and used for transmitting the horizontal reciprocating motion of the second sliding block to the second transmission pull rod.
The gun head body is in a cuboid shape as a whole, and a cylindrical groove is formed in the left part of the rear end face and used for accommodating the balance weight; the middle part of the gun head body is of a hollow structure; the upper part of the hollow structure is cuboid and is used for accommodating the first sliding block and the first transmission pull rod, and the lower part of the hollow structure is cylindrical and is used for accommodating the rotating sleeve; the lower part of the hollow structure is communicated with the cylindrical groove; the right part of the gun head body is provided with two horizontal channels, the channel at the upper part is used for penetrating through the first transmission pull rod, and the channel at the lower part is a first high-pressure water channel; when high-pressure water flows in from the first high-pressure water channel, the high-pressure water enters the cylindrical groove through the lower part of the hollow structure, so that the jacking of the balance weight is realized.
The first sliding block is integrally cuboid, and the lower end of the first sliding block is provided with the cam which is used for being matched with the rotating sleeve, and when the cam is driven by the first sliding block to do horizontal reciprocating motion, the cam drives the rotating sleeve to rotate.
The rotary sleeve is integrally cylindrical, a plurality of nozzles are arranged at the lower end of the rotary sleeve, an arc-shaped wheel groove is formed in the front end face of the rotary sleeve, the rotary sleeve extends from the left upper direction to the right lower direction and is matched with the cam, and rotation of the rotary sleeve is achieved.
The beneficial effects of the invention are as follows:
the invention has compact size and is suitable for application occasions with a central baffle SG for flushing mud and slag in a narrow space; the invention sets the balance weight which can extend along with the high-pressure water pressure to counteract the water jet reaction force of single-side flushing; the longitudinal rectangular gun body section improves the rigidity of the gun body in the vertical direction; the design thought of the gun body structure and the related structure are also applicable to other similar rigid sludge flushing devices.
Drawings
FIG. 1 is a schematic view of the structure of a gun head portion of the present invention;
FIG. 2a is a schematic illustration of the weight retracted state of the present invention;
FIG. 2b is a schematic illustration of the weight extended state of the present invention;
FIG. 3a is a schematic view of the nozzle retraction state of the present invention;
FIG. 3b is a schematic illustration of the nozzle of the present invention in operation;
FIG. 4a is a front cross-sectional view of a barrel portion of the present invention;
FIG. 4b is a top view of the shank portion of the present invention;
FIG. 4c is a right side view of the shank portion of the present invention;
FIG. 5 is a schematic view of the structure of the transmission tie rod of the present invention
FIG. 6 is a schematic view of the structure of the tail portion of the present invention
FIG. 7 is a schematic structural view of the body of the present invention;
FIG. 8 is a schematic view of the structure of the slider of the present invention;
fig. 9 is a schematic structural view of the rotor of the present invention.
Wherein: 1. the gun head comprises a gun head body, 2 parts of a balance block, 3 parts of a first sliding block, 4 parts of a first transmission pull rod, 5 parts of a first sealing ring, 6 parts of a first high-pressure water channel, 7 parts of a bearing, 8 parts of a rotary sleeve, 9 parts of a nozzle, 10 parts of a central partition plate, 11 parts of a heat transfer pipe, 12 parts of a second high-pressure water channel, 13 parts of a second transmission pull rod, 14 parts of a first connecting screw, 15 parts of a first positioning pin, 16 parts of a first screw limiting block, 17 parts of a second sealing ring, 18 parts of a second positioning pin, 19 parts of a second connecting screw, 20 parts of a second screw limiting block, 21 parts of a second sliding block, 22 parts of a screw rod, 23 parts of a motor, 24 parts of an adjusting hand wheel, 25 parts of a high-pressure water joint, 26 parts of a third high-pressure water channel, 27 parts of a third transmission pull rod, 28 parts of a cam and 29 parts of a wheel groove.
Detailed Description
The invention is further described below with reference to the drawings and examples.
A gun body for flushing mud residue of a tube plate of a steam generator with a central baffle plate comprises a gun head part, a gun rod part and a gun tail part. The gun head part is fixed at the left end of the gun shaft part for injecting high-pressure water into the heat transfer pipe 11. The left end and the right end of the gun rod part are respectively connected with the gun head part and the gun tail part, and are used for conveying high-pressure water and transmitting the action of the gun tail part to the gun head part. The left end of the gun tail part is fixedly connected with the gun rod part and is used for conveying high-pressure water and transmitting actions to the gun rod part.
As shown in fig. 1, the gun head part comprises a gun head body 1, a balance block 2, a first sliding block 3, a first transmission pull rod 4, a first sealing ring 5, a first high-pressure water channel 6, a bearing 7, a rotating sleeve 8 and a nozzle 9. The gun head body 1 is used for providing support for the gun head part and providing a water inlet channel for high-pressure water. The balance weight 2 is provided at the left portion of the rear end of the gun head body 1 for maintaining the balance of the gun head portion at the time of the flushing operation. The first sliding block 3 is arranged in the gun head body 1, the right end of the first sliding block is fixedly connected with the first transmission pull rod 4, the lower end of the first sliding block is slidably connected with the upper end of the rotating sleeve 8, and the sliding sleeve 8 can rotate through horizontal reciprocating motion of the first sliding block 3. The right end of the first transmission pull rod 4 extends out of the gun head body 1 and is fixedly connected with the gun rod part, and the right end is used for transmitting the action of the gun rod part so as to realize the horizontal reciprocating motion of the first sliding block 3. The first sealing ring 5 is arranged at the connecting part of the gun head body 1 and the gun rod part and is used for preventing high-pressure water from flowing out. The first high-pressure water passage 6 is provided at the right portion of the gun head body 1 for passing high-pressure water. The rotating sleeve 8 is arranged in the gun head body 1, is connected with the gun head body 1 through bearings 7 arranged at two ends, and can rotate along the axis. The spray head 9 is fixed at the lower end of the rotating sleeve 8 and is used for spraying high-pressure water to the heat transfer pipe 11.
As shown in fig. 2, the whole balance weight 2 is cylindrical, when the pressure of high-pressure water rises, the balance weight is driven to extend out from the rear end surface and tightly prop against the central partition board 10, and the reaction of water jet is transmitted to the central partition board 10 through the balance weight 2, so that balance is realized; when the high-pressure water is released, the balance weight 2 can retract and separate from the central partition board 10 under the action of the spring, and the stepping movement of the gun head body 1 can not be influenced.
As shown in fig. 1 and 3, when the first slider 3 is positioned at the left end of the swivel 8, the spray head 9 is in a retracted state. When the first sliding block 3 slides to the right end of the rotating sleeve 8 under the drive of the transmission pull rod 4, the spray head 9 is in a working state and is aligned to the direction of the heat transfer pipe 11.
As shown in fig. 4, the gun rod part comprises a gun rod body, a second high-pressure water channel 12, a second transmission pull rod 13, a first connecting screw 14, a first locating pin 15, a first screw limiting block 16 and a second sealing ring 17. Two horizontal channels are arranged in the gun rod body, the upper channel is used for penetrating through the second transmission pull rod 13, and the lower channel is the second high-pressure water channel 12. The second high-pressure water channel 12 is used for passing through high-pressure water, the left end of the second transmission pull rod 13 is fixedly connected with the right end of the first transmission pull rod 4, and the right end is fixedly connected with the gun tail part and is used for transmitting the action of the gun tail part to the first transmission pull rod 4. The first connecting screw 14 is arranged on the left end face of the gun rod body and is used for realizing fixed connection with the gun head body 1. The first locating pin 15 is arranged on the left end face of the gun rod body and used for realizing locating when the gun rod body is installed with the gun head body 1. The first screw limiting block 16 is disposed at the right end of the first connecting screw 14, and the right end thereof abuts against the gun rod body, so as to prevent the first connecting screw 14 from falling out. The second sealing ring 17 is arranged at the connecting part of the gun rod body and the gun tail part and is used for preventing high-pressure water from flowing out.
As shown in fig. 5, the second transmission pull rod 13 is integrally cylindrical, a cross-shaped connecting joint is arranged at the left end and used for realizing lap joint with the first transmission pull rod 4, and an arc-shaped groove is arranged at the right end from top to bottom and used for connecting a gun tail part.
As shown in fig. 6, the gun tail part comprises a gun tail body, a second positioning pin 18, a second connecting screw 19, a screw limiting block 20, a second sliding block 21, a screw rod 22, a motor 23, an adjusting hand wheel 24, a high-pressure water joint 25, a third high-pressure water channel 26 and a third transmission pull rod 27. The lower part of the gun tail body is provided with an inverted L-shaped channel along the length direction, and the channel is a third high-pressure water channel 26 which is communicated with the first high-pressure water channel 6 and the second high-pressure water channel 12. The second connecting screw 19 is arranged on the left end face of the gun tail body and is used for fixedly connecting the gun tail body with the gun rod body. The second locating pin 18 is arranged on the left end face of the gun tail body and is used for realizing locating when the gun tail body and the gun rod body are installed. The second screw limiting block 20 is arranged at the right end of the second connecting screw 19, and the right end of the second screw limiting block abuts against the gun tail body and is used for preventing the second connecting screw 19 from falling out. The second slider 21 is mounted on the screw 22 for pushing the third drive rod 27 to reciprocate horizontally. The left end of the screw rod 22 is connected with the gun tail body, the right end of the screw rod is connected with the motor 23, and the screw rod is driven by the motor 23 to rotate, so that the horizontal reciprocating motion of the second sliding block 21 is realized. The lower end of the motor 23 is fixedly connected with the gun tail body, the right end of the motor 23 is provided with an adjusting hand wheel 24, and the motor 23 drives the screw rod 22 to rotate through a bevel gear. The high-pressure water joint 25 is fixed at the water inlet of the third high-pressure water channel 26 at the lower end of the gun tail body and is used for connecting a high-pressure water source. The left end of the third transmission pull rod 27 is fixedly connected with the right end of the second transmission pull rod 13, and the right end is fixedly connected with the second sliding block 21 and is used for transmitting the horizontal reciprocating motion of the second sliding block 21 to the second transmission pull rod 13.
As shown in fig. 7, the gun head body 1 is in a cuboid shape, and a cylindrical groove is formed in the left part of the rear end face and is used for accommodating the balance weight 2. The middle part of the gun head body 1 is of a hollow structure. The upper part of the hollow structure is cuboid and is used for accommodating the first sliding block 3 and the first transmission pull rod 4, and the lower part of the hollow structure is cylindrical and is used for accommodating the rotating sleeve 8. The lower part of the hollow structure is communicated with the cylindrical groove. The right part of the gun head body 1 is provided with two horizontal channels, the channel at the upper part is used for penetrating the first transmission pull rod 4, and the channel at the lower part is a first high-pressure water channel 6. When high-pressure water flows in from the first high-pressure water channel 6, the high-pressure water enters the cylindrical groove through the lower part of the hollow structure, so that the jacking of the balance weight 2 is realized.
As shown in fig. 8, the first slider 3 is in a cuboid shape, and a cam 28 is disposed at the lower end of the first slider for cooperating with the rotating sleeve 8, and when the cam 28 is driven by the first slider 3 to do horizontal reciprocating motion, the rotating sleeve 8 is driven to rotate.
As shown in fig. 9, the rotary sleeve 8 is cylindrical in shape, a plurality of nozzles 9 are arranged at the lower end, an arc-shaped wheel groove 29 is arranged at the front end surface, and the arc-shaped wheel groove extends from the left upper part to the right lower part and is matched with the cam 28 to realize the rotation of the rotary sleeve 8.
The working process of the invention is as follows:
the motor 23 is turned on, the motor 23 drives the screw rod 22 through a bevel gear, and the screw rod 22 drives the first sliding block 3 to horizontally reciprocate through the third transmission pull rod 27, the second transmission pull rod 13 and the first transmission pull rod 4. The cam 28 on the first sliding block 3 drives the wheel groove 29 on the rotating sleeve 8 to drive the rotating sleeve 3 to rotate, so that the rotating motion of the nozzle 9 is realized.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the spirit of the present invention, within the knowledge of those skilled in the art. The invention may be practiced otherwise than as specifically described in the specification.
Claims (6)
1. A gun body for steam generator tube sheet sludge flushing with a central baffle plate, which is characterized in that: it comprises a gun head part, a gun rod part and a gun tail part; the gun head part is fixed at the left end of the gun rod part and is used for jetting high-pressure water to the heat transfer pipe (11); the left end and the right end of the gun rod part are respectively connected with the gun head part and the gun tail part, and are used for conveying high-pressure water and transmitting the action of the gun tail part to the gun head part; the left end of the gun tail part is fixedly connected with the gun rod part and is used for conveying high-pressure water and transmitting actions to the gun rod part;
the gun head part comprises a gun head body (1), a balance block (2), a first sliding block (3), a first transmission pull rod (4), a first sealing ring (5), a first high-pressure water channel (6), a bearing (7), a rotating sleeve (8) and a nozzle (9); the gun head body (1) is used for providing support for the gun head part and providing a water inlet channel for high-pressure water; the balance block (2) is arranged at the left part of the rear end of the gun head body (1) and is used for maintaining the balance of the gun head part when the flushing operation is carried out; the first sliding block (3) is arranged in the gun head body (1), the right end of the first sliding block is fixedly connected with the first transmission pull rod (4), the lower end of the first sliding block is in sliding connection with the upper end of the rotating sleeve (8), and the rotating of the rotating sleeve (8) is realized through the horizontal reciprocating motion of the first sliding block (3); the right end of the first transmission pull rod (4) extends out of the gun head body (1) and is fixedly connected with the gun rod part, and the right end of the first transmission pull rod is used for transmitting the action of the gun rod part so as to realize the horizontal reciprocating motion of the first sliding block (3); the first sealing ring (5) is arranged at the connecting part of the gun head body (1) and the gun rod part and is used for preventing high-pressure water from flowing out; the first high-pressure water channel (6) is arranged at the right part of the gun head body (1) and is used for passing high-pressure water; the rotating sleeve (8) is arranged in the gun head body (1), and is connected with the gun head body (1) through bearings (7) arranged at two ends and rotates along the axis; the nozzle (9) is fixed at the lower end of the rotating sleeve (8) and is used for jetting high-pressure water to the heat transfer pipe (11);
the balance weight (2) is integrally cylindrical, when the high-pressure water pressure rises, the balance weight is driven to extend out of the rear end surface and tightly prop against the central partition board (10), and the reaction of the water jet is transmitted to the central partition board (10) through the balance weight (2) to realize balance; when the high-pressure water pressure is released, the balance weight (2) can retract and separate from the central partition board (10) under the action of the spring, so that the stepping motion of the gun head body (1) is not influenced;
the gun rod part comprises a gun rod body, a second high-pressure water channel (12), a second transmission pull rod (13), a first connecting screw (14), a first locating pin (15), a first screw limiting block (16) and a second sealing ring (17); two horizontal channels are arranged in the gun rod body, the upper channel is used for penetrating through the second transmission pull rod (13), and the lower channel is a second high-pressure water channel (12); the second high-pressure water channel (12) is used for transmitting the action of the gun tail part to the first transmission pull rod (4) through high-pressure water, the left end of the second transmission pull rod (13) is fixedly connected with the right end of the first transmission pull rod (4), and the right end of the second transmission pull rod is fixedly connected with the gun tail part; the first connecting screw (14) is arranged on the left end face of the gun rod body and is used for realizing fixed connection with the gun head body (1); the first locating pin (15) is arranged on the left end face of the gun rod body and is used for realizing locating when the gun rod body and the gun head body (1) are installed; the first screw limiting block (16) is arranged at the right end of the first connecting screw (14), and the right end of the first screw limiting block is tightly propped against the gun rod body and is used for preventing the first connecting screw (14) from falling out; the second sealing ring (17) is arranged at the connecting part of the gun rod body and the gun tail part and is used for preventing high-pressure water from flowing out;
the gun tail part comprises a gun tail body, a second locating pin (18), a second connecting screw (19), a screw limiting block (20), a second sliding block (21), a screw rod (22), a motor (23), an adjusting hand wheel (24), a high-pressure water joint (25), a third high-pressure water channel (26) and a third transmission pull rod (27); the lower part of the gun tail body is provided with an inverted L-shaped channel along the length direction, and the channel is a third high-pressure water channel (26) which is communicated with the first high-pressure water channel (6) and the second high-pressure water channel (12); the second connecting screw (19) is arranged on the left end face of the gun tail body and is used for fixedly connecting the gun tail body with the gun rod body; the second locating pin (18) is arranged on the left end face of the gun tail body and used for realizing locating when the gun tail body and the gun rod body are installed; the second screw limiting block (20) is arranged at the right end of the second connecting screw (19), and the right end of the second screw limiting block is propped against the gun tail body and is used for preventing the second connecting screw (19) from falling off; the second sliding block (21) is arranged on the screw rod (22) and is used for pushing the third transmission pull rod (27) to do horizontal reciprocating motion; the left end of the screw rod (22) is connected with the gun tail body, the right end of the screw rod is connected with the motor (23), and the screw rod is driven by the motor (23) to rotate so as to realize the horizontal reciprocating motion of the second sliding block (21); the lower end of the motor (23) is fixedly connected with the gun tail body, the right end of the motor is provided with an adjusting hand wheel (24), and the motor (23) drives the screw rod (22) to rotate through a bevel gear; the high-pressure water connector (25) is fixed at the water inlet of a third high-pressure water channel (26) at the lower end of the gun tail body and is used for connecting a high-pressure water source; the left end of the third transmission pull rod (27) is fixedly connected with the right end of the second transmission pull rod (13), and the right end of the third transmission pull rod is fixedly connected with the second sliding block (21) and is used for transmitting the horizontal reciprocating motion of the second sliding block (21) to the second transmission pull rod (13).
2. The gun body for steam generator tube sheet sludge flushing with center baffle as recited in claim 1, wherein: when the first sliding block (3) is positioned at the left end of the rotating sleeve (8), the nozzle (9) is in a retracted state; when the first sliding block (3) slides to the right end of the rotating sleeve (8) under the drive of the transmission pull rod (4), the nozzle (9) is in a working state and is aligned to the direction of the heat transfer pipe (11).
3. The gun body for steam generator tube sheet sludge flushing with center baffle as recited in claim 1, wherein: the second transmission pull rod (13) is integrally cylindrical, a cross-shaped connecting joint is arranged at the left end and used for realizing lap joint with the first transmission pull rod (4), and an arc-shaped groove is formed at the right end from top to bottom and used for connecting a gun tail part.
4. The gun body for steam generator tube sheet sludge flushing with center baffle as recited in claim 1, wherein: the gun head body (1) is integrally cuboid, and a cylindrical groove is formed in the left part of the rear end face and used for accommodating the balance weight (2); the middle part of the gun head body (1) is of a hollow structure; the upper part of the hollow structure is cuboid and is used for accommodating the first sliding block (3) and the first transmission pull rod (4), and the lower part of the hollow structure is cylindrical and is used for accommodating the rotating sleeve (8); the lower part of the hollow structure is communicated with the cylindrical groove; the right part of the gun head body (1) is provided with two horizontal channels, the upper channel is used for penetrating through the first transmission pull rod (4), and the lower channel is a first high-pressure water channel (6); when high-pressure water flows in from the first high-pressure water channel (6), the high-pressure water enters the cylindrical groove through the lower part of the hollow structure, so that the jacking of the balance weight (2) is realized.
5. The gun body for steam generator tube sheet sludge flushing with center baffle as recited in claim 1, wherein: the first sliding block (3) is integrally cuboid, and the lower end of the first sliding block is provided with a cam (28) which is used for being matched with the rotating sleeve (8), and when the cam (28) is driven by the first sliding block (3) to do horizontal reciprocating motion, the rotating sleeve (8) is driven to rotate.
6. The gun body for steam generator tube sheet sludge flushing with center baffle as recited in claim 1, wherein: the rotary sleeve (8) is integrally cylindrical, a plurality of nozzles (9) are arranged at the lower end of the rotary sleeve, an arc-shaped wheel groove (29) is formed in the front end face of the rotary sleeve, the rotary sleeve extends from the left upper part to the right lower part, and the rotary sleeve is matched with the cam (28) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811574982.XA CN109433706B (en) | 2018-12-21 | 2018-12-21 | Gun body for flushing mud slag of tube plate of steam generator with central partition plate |
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| CN201811574982.XA CN109433706B (en) | 2018-12-21 | 2018-12-21 | Gun body for flushing mud slag of tube plate of steam generator with central partition plate |
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| CN109433706B true CN109433706B (en) | 2023-09-08 |
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| CN109433706A (en) | 2019-03-08 |
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