阅读说明：本技术 一种蒸汽发生器贯穿型清洗装置 (Steam generator runs through type belt cleaning device ) 是由 张高剑 余汇涛 胡卉桦 包建国 于 2020-05-29 设计创作，主要内容包括：本发明属于核电检修设备技术领域,具体涉及一种蒸汽发生器贯穿型清洗装置。该装置装置在蒸汽发生器两侧的手孔上安装贯穿式导轨,导轨上安装清洗机器人,清洗机器人从蒸汽发生器一侧手孔移动至对侧手孔,间隙性的向传热管管间喷射高压水,依次清除沉积在蒸汽发生器管板上的泥渣。有益效果：能够一次安装实现全管板冲洗,降低操作人员工作强度及辐照剂量,同时提高工作效率,缩短工作时间。还能够冲洗机器人采用对摆喷嘴结构,可以同时实现蒸汽发生器中心管廊两侧管板冲洗,提高冲洗效率,降低高压泵功率,减少现场冲洗用水量。另外,本装置可以适用于各型核电站的蒸汽发生器二次侧管板冲洗要求或其他类似不适宜人工清洗的场所。(The invention belongs to the technical field of nuclear power overhaul equipment, and particularly relates to a penetrating type cleaning device for a steam generator. The device installs the run-through guide rail on the hand hole of steam generator both sides, installs cleaning robot on the guide rail, and cleaning robot removes to offside hand hole from steam generator one side hand hole, and the intermittent sprays the water under high pressure to the heat-transfer intertube, clears away the mud sediment of deposit on the steam generator tube sheet in proper order. Has the advantages that: can once install and realize that the whole tube sheet washes, reduce operating personnel working strength and irradiation dose, improve work efficiency simultaneously, shorten operating time. The double-side-swinging nozzle structure can also be adopted by the washing robot, so that the tube plates on two sides of the central tube gallery of the steam generator can be washed simultaneously, the washing efficiency is improved, the power of a high-pressure pump is reduced, and the water consumption for field washing is reduced. In addition, the device can be suitable for the secondary side tube plate flushing requirement of the steam generator of various nuclear power stations or other similar places which are not suitable for manual cleaning.)

1. A steam generator runs through type belt cleaning device which characterized in that: comprises a guide rail (3) and a cleaning robot (4); the guide rails (3) are arranged on hand holes at two sides of the steam generator (1), and the cleaning robot (4) is arranged on the guide rails (3) and can move along the guide rails (3); the cleaning robot (4) can spray cleaning agent.

2. A steam generator pass-through cleaning apparatus as claimed in claim 1, wherein: the cleaning robot (4) comprises a moving part and a rotating part, so that the cleaning robot (4) can swing along the guide rail (3) while stepping.

3. A steam generator pass-through cleaning apparatus as claimed in claim 2, wherein: the guide rail is characterized in that a flange support (2) is further arranged, and the guide rail (3) is installed on the flange support (2).

4. A steam generator pass-through cleaning apparatus as claimed in claim 3, wherein: the flange bracket (2) comprises a flange plate (201), a hand hole bolt (202) and a support sleeve (204); the support sleeve (204) is fixed at the center of the flange plate (201), the guide rail (3) penetrates through the support sleeve (204), and the flange plate (201) is fixedly connected with a hand hole flange through a hand hole bolt (202).

5. A steam generator pass-through cleaning apparatus as claimed in claim 4, wherein: the flange bracket (2) is also provided with a positioning pin (205), and a hand hole bolt (202) and the positioning pin (205) are arranged on two sides of the flange plate (201); the flange bracket (2) is also provided with a screw (203) for limiting after the guide rail (3) is installed in place.

6. A steam generator pass-through cleaning apparatus as claimed in claim 4, wherein: and a non-metal pad without halogen is arranged between the flange plate (201) and the hand hole flanges at two sides of the steam generator (1).

7. A steam generator penetration type cleaning apparatus as set forth in claim 2 or 3, wherein: the guide rail (3) is an open rod-shaped structure, runs through a central pipe gallery of the steam generator (1), and sliding grooves are formed in two sides of the inner wall of the guide rail (3) and matched with the cleaning robot (4).

8. A steam generator pass-through cleaning apparatus as claimed in claim 7, wherein: the cleaning robot is characterized in that synchronous belt tensioning mechanisms are arranged at two ends of the guide rail (3), and a synchronous belt is arranged between the synchronous belt tensioning mechanisms and used for supporting and driving the cleaning robot (4) to move on the guide rail (3).

9. A steam generator pass-through cleaning apparatus as recited in claim 8, wherein: the guide rail (3) is of a multi-section splicing structure and comprises a guide rail A (31), a guide rail B (32) and a guide rail C (33), the guide rail A (31) and the guide rail C (33) are respectively provided with one section or multiple sections, and the guide rail B (32) is provided with one or multiple sections; the guide rail A (31), the guide rail B (32) and the guide rail C (33) are connected through connecting pieces and/or connecting hooks.

10. A steam generator pass-through cleaning apparatus as claimed in claim 9, wherein: guide rail A (31) right-hand member face is equipped with a central groove, the both sides terminal surface of guide rail B (32) all is equipped with the central groove, guide rail C (33) left end face is equipped with the central groove, and the central inslot at guide rail A (31), guide rail B (32) or guide rail C (33) is installed at the both ends of connecting piece.

11. A steam generator pass-through cleaning apparatus as claimed in claim 9, wherein: connecting hook fixed connection is in the one end bottom of guide rail A (31) or guide rail B (32), the one end bottom bilateral symmetry of guide rail B (32) and guide rail C (33) is provided with heavy platform to set up a locating pin on heavy platform of both sides, be used for cooperating with the connecting hook.

12. A steam generator pass-through cleaning apparatus as claimed in claim 9, wherein: and backing plates are arranged among the guide rail A (31), the guide rail B (32) and the guide rail C (33) and are used for adjusting assembly gaps.

13. A steam generator pass-through cleaning apparatus as recited in claim 8, wherein: the moving part of the cleaning robot (4) is a stepping device (6), and the rotating part is a nozzle device (5); the nozzle device (5) and the stepping device (6) are provided with bosses matched with the sliding grooves of the guide rail (3), so that the cleaning robot (4) can be hung on the guide rail (3) and can move in the sliding grooves of the guide rail (3).

14. A steam generator penetration type cleaning apparatus as set forth in claim 13, wherein: the nozzle device (5) and the stepping device (6) are connected through an elastic structure.

15. A steam generator penetration type cleaning apparatus as set forth in claim 14 wherein: the elastic structure comprises a butt joint shaft (505) and a butt joint pin (506); an arc-shaped groove with the same outer diameter as the butt joint pin (506) is arranged at the position where the butt joint shaft (505) is matched with the butt joint pin (506); a spring is arranged in the butt joint pin (506), a groove is arranged on the cylindrical surface of the butt joint pin (506), the butt joint pin (506) is pressed from the side surface, the groove is aligned with the butt joint shaft (505), and the butt joint shaft (505) is inserted into the stepping device (6); and (3) loosening the butt joint pin (506), pushing the butt joint pin (506) to reset under the action of the built-in spring, and enabling the cylindrical surface of the butt joint pin (506) to be clamped into the arc-shaped groove of the butt joint shaft (505), so that the butt joint shaft (505) is prevented from being separated, and finally, the quick connection of the nozzle device (5) and the stepping device (6) is realized.

16. A steam generator penetration type cleaning apparatus as set forth in claim 13, wherein: the cleaning robot (4) is provided with a remote control part and a camera, the remote control part is used for receiving an instruction sent by a control system and controlling the movement of the stepping device (6) and the working state of the nozzle device (5), and the camera is used for shooting and feeding back the position and the working state of the cleaning robot (4).

17. A steam generator penetration type cleaning apparatus as set forth in claim 13, wherein: the nozzle device (5) comprises a nozzle device shell (501), a motor (502), a rotating component synchronous pulley A (503), a rotating component synchronous belt (504), a rotating component synchronous pulley B (507), a nozzle rotating shaft (508), a nozzle (509), a rotating component gear A (510) and a rotating component gear B (511);

the motor (502) is fixedly arranged in the nozzle device shell (501), and a rotating part synchronous pulley A (503) is arranged on an output shaft of the motor (502); the nozzle device shell (501) is also internally provided with two nozzle rotating shafts (508), the two nozzle rotating shafts (508) are meshed with a rotating part gear B (511) through a rotating part gear A (510), the shaft end of one nozzle rotating shaft A (508) -1 is provided with a rotating part synchronous pulley B (507), and the rotating part synchronous pulley B (507) is connected with a rotating part synchronous pulley A (503) through a rotating part synchronous belt (504); cavities are arranged in the two nozzle rotating shafts (508), and a plurality of nozzles (509) communicated with the cavities are arranged on the side walls.

18. A steam generator penetration type cleaning apparatus as set forth in claim 17 wherein: the nozzle device shell (501) is provided with a high-pressure pipe interface and a flow channel, and the flow channel is communicated with the cavity of the nozzle rotating shaft (508) and is used as a flow channel of a cleaning agent.

19. A steam generator penetration type cleaning apparatus as set forth in claim 17 wherein: the nozzle (509) comprises a fixed shaft (509-5), a rotating shaft (509-1) and a limiting piece; the fixed shaft (509-5) is of a rotary structure, one end of the fixed shaft is connected with the side wall of the nozzle rotating shaft (508), and the other end of the fixed shaft is connected with the rotating shaft (509-1); a limiting piece is arranged between the fixed shaft (509-5) and the rotating shaft (509-1) to enable the rotating shaft (509-1) to rotate but not move axially; the center of the rotating shaft (509-1) is opened and is communicated with the center through hole of the fixed shaft (509-5).

20. A steam generator penetration type cleaning apparatus as set forth in claim 19 wherein: the nozzle (509) is further provided with a seal (509-4) located between the stationary shaft (509-5) and the rotating shaft (509-1).

21. A steam generator penetration type cleaning apparatus as set forth in claim 17 wherein: the stepping device (6) comprises a motor (601), a stepping device shell (602), a moving part gear A (603), a worm wheel (605), a moving part synchronous belt (606), a worm (607), a moving part gear B (608) and a moving part synchronous belt wheel (609); the motor (601) is driven by a moving part gear A (603) and a moving part gear B (608) to form an eccentric structure, a worm (607) connected with the motor is driven to rotate, a worm wheel (605) is driven to rotate, and finally a moving part synchronous pulley (609) coaxially and fixedly connected with the worm wheel (605) is driven to rotate; the moving part synchronous pulley (609) is meshed with a synchronous belt on the guide rail (3), and two guide wheels (604) are arranged on two sides of the moving part synchronous pulley (609), so that the cleaning robot (4) can move on the guide rail (3).

22. A steam generator penetration type cleaning apparatus as set forth in claim 21 wherein: the stepping device (6) is also provided with two guide wheels (604), the two guide wheels are arranged on a stepping device shell (602), are positioned on two sides of a moving component synchronous pulley (609), and are used for changing the direction of a synchronous belt of the guide rail (3).

23. A steam generator pass-through cleaning apparatus as claimed in claim 2, wherein: synchronous belt tensioning mechanisms (34) are arranged at two ends of the guide rail (3), a synchronous belt is arranged between the synchronous belt tensioning mechanisms (34) and matched with a moving part of the cleaning robot (4), and the support and the movement of the cleaning robot (4) on the guide rail (3) are realized.

24. A steam generator penetration type cleaning device according to claim 23 further comprising: the synchronous belt tensioning mechanism (34) comprises a fixed end (341) and a tensioning end (342), the fixed end (341) is provided with a fixed end sliding block connected with the synchronous belt, and the fixed end sliding block is fixedly arranged at one end of the guide rail (3); the tensioning end (342) is installed at the other end of the guide rail (3), a synchronous belt is connected through a tensioning end sliding block, and the tensioning end sliding block can move and be fixed along a sliding groove of the guide rail (3).

25. A steam generator penetration type cleaning apparatus according to claim 24, wherein: the tensioning end sliding block is connected with a screw rod through a threaded structure, and the screw rod is arranged on a supporting plate on the end face of the guide rail (3) through a unthreaded hole; the screw rod is rotated to drive the sliding block to move towards the direction of the supporting plate of the guide rail (3), so that the synchronous belt is tensioned.

Technical Field

The invention belongs to the technical field of nuclear power overhaul equipment, and particularly relates to a penetrating type cleaning device for a steam generator.

Background

After the nuclear power steam generator operates for a long time, sludge and corrosion products are inevitably deposited on a secondary side tube plate, and corrosion conditions such as extrusion, concentration and the like can be possibly generated on a heat transfer pipe, so that the safe operation of the steam generator is influenced. The removal of sludge is an important component of the maintenance and management of steam generators in nuclear power plants, due to the possible serious consequences of sludge deposits on the steam generators. In order to better solve the problem of sludge deposition, sludge washing is required to be carried out regularly.

At present steam generator tube sheet secondary side overhauls most of works and is accomplished by professional operating personnel, and current steam generator mud sediment washing unit is mostly cantilever type or half side guide rail type, installs on the hand hole flange, can only realize half side tube sheet and wash, and washes the in-process and need constantly dismouting barral of a gun increase and wash the scope. After the half-side tube plate is washed, the equipment needs to be transferred to the opposite-side hand hole for installation and washing until the whole tube plate washing work is completed. In the working process, equipment needs to be transported and installed, a large amount of non-working time is generated, and the working intensity of operators is high, the irradiation dose is high, and the working time is long. Therefore, a secondary side tube plate sludge penetrating type cleaning device of a steam generator is needed to reduce the working intensity and the irradiation dose of operators and improve the working efficiency and the quality.

Disclosure of Invention

The invention aims to solve the problem that the existing flushing equipment can only meet the requirement of flushing a half-side tube plate in one-time installation, and provides a sludge penetrating type cleaning device for a secondary side tube plate of a steam generator, so that the working efficiency is improved, and the working intensity, time and irradiation dose of operators are reduced.

The technical scheme of the invention is as follows:

a steam generator penetration type cleaning device comprises a guide rail and a cleaning robot; the guide rails are arranged on hand holes at two sides of the steam generator, and the cleaning robot is arranged on the guide rails and can move along the guide rails; the cleaning robot can spray cleaning agent.

Further, the cleaning robot includes a moving member and a rotating member so that the cleaning robot can swing while stepping along the guide rail.

The device is also provided with a flange bracket, and the guide rail is arranged on the flange bracket. Further, the flange bracket comprises a flange plate, a hand hole bolt and a support sleeve; the support sleeve is fixed in the center of the flange plate, the guide rail penetrates through the support sleeve, and the flange plate is fixedly connected with the hand hole flange through the hand hole bolt.

Furthermore, the flange bracket is also provided with a positioning pin, and the hand hole bolt and the positioning pin are arranged on two sides of the flange plate; the flange bracket is also provided with a screw for limiting after the guide rail is installed in place.

Furthermore, non-metal mats without halogen are arranged between the flange plate and hand hole flanges on two sides of the steam generator.

The guide rail is opening rod-shaped structure, runs through steam generator center tube corridor, and there is the spout guide rail inner wall both sides, cooperates with cleaning robot.

Furthermore, the two ends of the guide rail are provided with synchronous belt tensioning mechanisms, and a synchronous belt is arranged between the synchronous belt tensioning mechanisms and used for supporting and driving the cleaning robot to move on the guide rail.

Furthermore, the guide rail is of a multi-section splicing structure and comprises a guide rail A, a guide rail B and a guide rail C, wherein the guide rail A and the guide rail C are respectively provided with one section or multiple sections; the guide rail A, the guide rail B and the guide rail C are connected through connecting pieces and/or connecting hooks.

Further, guide rail A right-hand member face is equipped with a central groove, guide rail B's both sides terminal surface all is equipped with the central groove, guide rail C left end face is equipped with the central groove, and the both ends of connecting piece are installed in guide rail A, guide rail B or guide rail C's central groove.

Furthermore, coupling hook fixed connection is in guide rail A or guide rail B's one end bottom, guide rail B and guide rail C's one end bottom bilateral symmetry are provided with heavy platform to sink and set up a locating pin on the platform in both sides for cooperate with the coupling hook.

Further, a base plate is arranged among the guide rail A, the guide rail B and the guide rail C and used for adjusting the assembling clearance.

The moving part of the cleaning robot is a stepping device, and the rotating part is a nozzle device; the nozzle device and the stepping device are provided with bosses matched with the sliding grooves of the guide rail, so that the cleaning robot can be hung on the guide rail and can move in the sliding grooves of the guide rail.

The nozzle device and the stepping device are connected through a pair of elastic structures. Further, the elastic structure comprises a docking shaft and a docking pin; an arc-shaped groove with the same outer diameter as the butt joint pin is arranged at the position where the butt joint shaft is matched with the butt joint pin; the spring is arranged in the butt joint pin, the cylindrical surface of the butt joint pin is provided with a groove, the butt joint pin is pressed from the side surface, the groove is aligned to the butt joint shaft, and the butt joint shaft is inserted into the stepping device; the butt joint pin is loosened, the butt joint pin is pushed to reset under the action of the built-in spring, and the cylindrical surface of the butt joint pin is clamped into the arc-shaped groove of the butt joint shaft, so that the butt joint shaft is prevented from being separated, and the rapid connection of the nozzle device and the stepping device is finally realized.

Furthermore, the cleaning robot is provided with a remote control part and a camera, the remote control part is used for receiving an instruction sent by the control system and controlling the movement of the stepping device and the working state of the nozzle device, and the camera is used for shooting and feeding back the position and the working state of the cleaning robot.

The nozzle device comprises a nozzle device shell, a motor, a rotating part synchronous pulley A, a rotating part synchronous belt, a rotating part synchronous pulley B, a nozzle rotating shaft, a nozzle, a rotating part gear A and a rotating part gear B; the motor is fixedly arranged in the nozzle device shell, and a rotating part synchronous belt pulley A is arranged on an output shaft of the motor; the nozzle device is characterized in that two nozzle rotating shafts are also arranged in the shell of the nozzle device and are meshed with a rotating part gear B through a rotating part gear A, a rotating part synchronous belt wheel B is mounted at the shaft end of one nozzle rotating shaft A-1 and is connected with the rotating part synchronous belt wheel A through a rotating part synchronous belt; the two nozzle rotating shafts are internally provided with cavities, and the side walls of the two nozzle rotating shafts are provided with a plurality of nozzles communicated with the cavities.

Furthermore, a high-pressure pipe interface and a flow channel are arranged on the shell of the nozzle device, and the flow channel is communicated with the cavity of the nozzle rotating shaft and is used as a flow channel of the cleaning agent.

Further, the nozzle comprises a fixed shaft, a rotating shaft and a limiting piece; the fixed shaft is of a rotary structure, one end of the fixed shaft is connected with the side wall of the nozzle rotating shaft, and the other end of the fixed shaft is connected with the rotating shaft; a limiting piece is arranged between the fixed shaft and the rotating shaft, so that the rotating shaft can rotate but cannot axially move; the rotating shaft is provided with a central opening which is communicated with the central through hole of the fixed shaft. The nozzle is also provided with a sealing element which is positioned between the fixed shaft and the rotating shaft.

The stepping device comprises a motor, a stepping device shell, a moving part gear A, a worm wheel, a moving part synchronous belt, a worm, a moving part gear B and a moving part synchronous belt wheel; the motor is driven by the moving part gear A and the moving part gear B to form an eccentric structure, drives a worm connected with the motor to rotate, drives a worm wheel to rotate, and finally drives a moving part synchronous belt pulley coaxially and fixedly connected with the worm wheel to rotate; the moving part synchronous belt wheel is meshed with the synchronous belt on the guide rail, and two guide wheels are arranged on two sides of the moving part synchronous belt wheel, so that the cleaning robot can move on the guide rail.

Furthermore, the stepping device is also provided with two guide wheels, the two guide wheels are arranged on the shell of the stepping device, are positioned on two sides of the synchronous belt wheel of the moving part and are used for changing the direction of the synchronous belt of the guide rail.

Furthermore, synchronous belt tensioning mechanisms are arranged at two ends of the guide rail, a synchronous belt is arranged between the synchronous belt tensioning mechanisms and matched with a moving part of the cleaning robot, and the support and the movement of the cleaning robot on the guide rail are realized.

Furthermore, the synchronous belt tensioning mechanism comprises a fixed end and a tensioning end, the fixed end is provided with a fixed end sliding block connected with the synchronous belt, and the fixed end sliding block is fixedly arranged at one end of the guide rail; the tensioning end is installed at the other end of the guide rail and connected with the synchronous belt through a tensioning end sliding block, and the tensioning end sliding block can move and be fixed along a sliding groove of the guide rail.

Furthermore, the tensioning end sliding block is connected with a screw rod through a threaded structure, and the screw rod is arranged on a supporting plate on the end face of the guide rail through a unthreaded hole; the sliding block is driven to move towards the direction of the guide rail supporting plate by rotating the screw rod, so that the synchronous belt is tensioned.

The invention has the beneficial effects that:

the penetrating type cleaning device is characterized in that penetrating type guide rails are arranged on hand holes on two sides of a steam generator, a cleaning robot is arranged on the guide rails, the cleaning robot moves from one hand hole to the opposite hand hole of the steam generator, high-pressure water is sprayed between heat transfer pipes in a clearance mode, and mud residues deposited on a pipe plate of the steam generator are sequentially removed. Through the structural design, the full tube plate washing can be realized through one-time installation, the working intensity and the irradiation dose of operators are reduced, the working efficiency is improved, and the working time is shortened. The flushing robot can also adopt a nozzle swinging structure, can simultaneously realize the flushing of tube plates on two sides of a central tube rack of the steam generator, can improve the flushing efficiency, reduce the power of a high-pressure pump and reduce the water consumption for on-site flushing. In addition, the sludge penetrating type cleaning device for the secondary side tube plate of the steam generator can be suitable for the secondary side tube plate of the steam generator of various nuclear power stations and other places which are not suitable for manual cleaning.

Drawings

FIG. 1 is a schematic diagram of the general structure of a secondary side tube plate sludge penetrating type cleaning device of a steam generator of the invention;

FIG. 2 is a schematic structural view of the flange bracket of FIG. 1;

FIG. 3 is a schematic view of the structure of the guide rail of FIG. 1;

FIG. 4 is a schematic structural diagram of the cleaning robot of FIG. 1;

FIG. 5 is a schematic view of the internal structure of the cleaning robot in FIG. 4;

FIG. 6 is a schematic view of the nozzle arrangement of FIG. 4;

FIG. 7 is a schematic view of the human stepper apparatus of FIG. 4;

FIG. 8 is a schematic cross-sectional shape of the guide rail of FIG. 3;

FIG. 9 is a schematic view of the structure of the guide rail A in FIG. 3;

FIG. 10 is a schematic view of the structure of the guide rail B in FIG. 3;

FIG. 11 is a schematic view of the structure of the guide rail C in FIG. 3;

FIG. 12 is a schematic view of the nozzle of FIG. 6;

FIG. 13 is a schematic diagram of a synchronous belt tensioning mechanism;

fig. 14 is a schematic view showing a connection structure of the nozzle device 5 and the stepping device 6 in fig. 4;

in the figure: 1-a steam generator, 2-a flange bracket, 3-a guide rail, 4-a cleaning robot, 5-a nozzle device and 6-a stepping device;

101-;

201-flange plate, 202-hand hole bolt, 203-screw, 204-support sleeve, 205-positioning pin;

31-guide rail A, 32-guide rail B, 33-guide rail C, 34-synchronous belt tensioning mechanism; 311-guide rail A body, 312-guide rail A connecting piece, 313-guide rail A backing plate and 314-guide rail A connecting hook; 321-guide rail B body, 322-guide rail B connecting piece, 323-guide rail B backing plate, 324-guide rail B connecting hook and 325-guide rail B ball head screw; 331-guide rail C body, 332-guide rail C backing plate and 333-guide rail C ball head screw; 341-fixed end, 342-tensioning end;

501-nozzle device shell, 502-motor, 503-rotating component synchronous pulley A, 504-rotating component synchronous belt, 505-butt joint shaft, 506-butt joint pin, 507-rotating component synchronous pulley B, 508-nozzle rotating shaft, 508-1 nozzle rotating shaft A, 508-2 nozzle rotating shaft B, 509-nozzle, 510-rotating component gear A, 511-rotating component gear B;

509-1 rotating shaft, 509-2 rolling ball, 509-3 screw, 509-4 sealing element and 509-5 fixing shaft;

601-motor, 602-stepping device shell, 603-moving part gear A, 604-guide wheel, 605-worm wheel, 606-moving part synchronous belt, 607-worm, 608-moving part gear B, 609-moving part synchronous belt wheel.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.