CN116378460A

CN116378460A - Conveying method for heavy equipment of operation nuclear power station

Info

Publication number: CN116378460A
Application number: CN202310534746.XA
Authority: CN
Inventors: 谢为金; 李富军; 何伟权; 符翔; 张宏业; 王业洛; 张林辉; 陈子明; 蔡小波; 林汝秋; 肖凯; 李开天; 刘江浪; 陈俊胜; 冯晓彬; 王凡; 赵治昂; 范双燕; 张细文
Original assignee: GUANGDONG LIFT ENGINEERING MACHINERY CO LTD
Current assignee: GUANGDONG LIFT ENGINEERING MACHINERY CO LTD
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-07-04

Abstract

The invention provides a conveying method for operating heavy equipment of a nuclear power station, which is characterized by comprising the following construction steps of: the method comprises the steps of a hydraulic lifting device building step S1, a plane transferring device assembling step S2, a plane transferring device integral introducing step S3, a hydraulic lifting device adding section heightening step S4, a transfer trolley loading and conveying step S5, a hydraulic lifting device reducing section lowering step S6 and a plane transferring device unloading step S7, and solves the problem that the existing bridge crane has insufficient lifting capacity, so that the vertical lifting displacement of heavy equipment can be realized without reinforcing the bridge crane, the construction cost is reduced, the integral construction period is shortened, and the construction safety is improved.

Description

Conveying method for heavy equipment of operation nuclear power station

Technical Field

The invention relates to the technical field of building construction, in particular to a conveying method for heavy equipment of an operating nuclear power station.

Background

During the construction of a nuclear power project, the installation of nuclear power plant main equipment such as a Steam Generator (SG), a pressure vessel (RPV), a top cover, a voltage stabilizer (PZR) and the like is carried out by hoisting the equipment into the nuclear power plant for temporary storage through a large crawler crane before the installation of a dome of the nuclear power plant.

The nuclear power plant main equipment generally does not need to be replaced in the design life cycle of the nuclear power plant. Therefore, when the nuclear auxiliary plant is designed, the cost is reduced, the replacement and hoisting requirements of the main equipment of the nuclear power plant are not considered, once the main equipment of the nuclear power plant needs to be replaced due to the quality problem, the top of the nuclear island is difficult to open, and the travelling crane in the nuclear auxiliary plant is difficult to achieve the equipment hoisting requirements through simple reinforcement due to the reasons of cost, construction period and the like.

For example, the pressure vessel top cover of the nuclear power unit has a weight of up to 150 tons (t), and the maximum lifting capacity of the bridge crane in the auxiliary factory building is only 90t, so that the lifting and replacing task of heavy equipment such as the pressure vessel top cover cannot be completed. In addition, the equipment platform of the nuclear power station is usually at the elevation of +19.5 meters (m), the maximum jacking height of a jacking tower which is commonly used as a landing leg of a lifting platform is only 12.2m, the height requirement cannot be met, the overall transportation height requirement cannot be met after the platform descends to the basic section height, and the secondary descending is required to be managed.

Other methods are therefore designed to meet the replacement needs of heavy equipment in nuclear power plants.

Disclosure of Invention

In view of the above, the invention provides a method for conveying heavy equipment of a running nuclear power station, which is used for overcoming the problem of insufficient lifting capacity of a bridge crane in a factory building of the nuclear power station, and realizing vertical lifting displacement of the heavy equipment by the method without reinforcing the bridge crane, thereby reducing construction cost, greatly shortening the whole construction period and improving construction safety.

In order to achieve the above object, the present invention provides a method for transporting heavy equipment for operating a nuclear power plant, the method comprising the steps of:

step S1 of building hydraulic lifting equipment: paving four uniform load supports on the ground of a hoisting well of the nuclear power station, wherein a basic section base is arranged on each uniform load support;

assembling the plane transfer equipment, namely, assembling step S2: arranging a bearing platform on a hydraulic module vehicle, and arranging a transfer trolley on the bearing platform; when heavy equipment is required to be introduced into a reactor building of the nuclear power station, fixedly arranging the heavy equipment on the transfer trolley in the step;

the whole plane transfer device is introduced into the step S3: the height of a truck plate of the hydraulic module truck is adjusted to be about 10 to 20 centimeters higher than the top end of the base of the basic section, and then the hydraulic module truck is driven to integrally transport plane transfer equipment into the hoisting well; the height of a carriage plate of the hydraulic module car is adjusted to be lowered to the height that the bearing platform frame is fixed on the basic section base of the hydraulic lifting equipment, and the hydraulic module car is withdrawn from the lifting well;

step S4 of adding sections and heightening of hydraulic lifting equipment: lifting the standard section units added into the base of the basic section by utilizing a hydraulic lifting power unit until the top surface of the bearing platform is lifted to be the same height as the top surface of the equipment platform of the nuclear power station entering and exiting a factory building, and stopping adding sections, wherein the uniform bearing support, the base of the basic section and the standard section units together form a lifting upright column;

and (5) loading and conveying the transfer trolley: paving a transition platform plate between the bearing platform and the equipment platform; operating the transfer trolley to enter the equipment platform through the transition platform plate and enter the reactor factory building; when heavy equipment is required to be introduced into a reactor plant, unloading the heavy equipment after the heavy equipment enters the reactor plant by the transfer trolley, and unloading the heavy equipment from the equipment platform in an idle mode; when heavy equipment is required to be led out of a reactor plant, the transfer trolley enters the reactor plant in an empty load mode, loads the heavy equipment, and then exits to the equipment platform in a loaded mode;

step S6 of reducing the hydraulic lifting equipment: operating the primary path of the transfer trolley to return to the bearing platform; the hydraulic jacking power unit is used for jacking the jacking upright column so as to remove the standard section unit positioned at the bottommost end of the jacking upright column until the top surface of the jacking upright column is erected on the top end of the basic section base, so that the sections are stopped and reduced;

a planar transshipment equipment refund step S7: operating the hydraulic module vehicle to drive into a space below the bearing platform, adjusting the height of a vehicle plate of the hydraulic module vehicle to be about 10 to 20 centimeters higher than the top end of the basic section base so as to prop up the bearing platform and an object borne on the bearing platform, and then driving the hydraulic module vehicle to withdraw from the hoisting well; when the heavy equipment is required to be led out of the reactor plant, the heavy equipment is unloaded and transported from the transport trolley to the storage place in the step, and the hydraulic module trolley transports the unloaded heavy equipment to a back-off place.

The invention further improves the conveying method for operating the heavy equipment of the nuclear power station in that the construction step further comprises a pre-preparation step S0 before the step S1; the preparation step S0 comprises the steps of carrying out 1.1 times of load and working condition simulation test on the hydraulic lifting equipment and the plane transferring equipment before construction, carrying out safety education and training on constructors, and respectively unloading the working machines and tools outside the in-out workshop and the lifting well according to the use requirement.

The invention further improves the conveying method of the heavy equipment for operating the nuclear power station, which is characterized in that the bearing platform and the heavy equipment are connected and reinforced by arranging a plurality of chain blocks.

The method for transporting heavy equipment for operating a nuclear power plant according to the present invention is further improved in that the step S2 and the step S7 hoist the heavy equipment to the transfer trolley by an all-terrain crane or remove the heavy equipment from the transfer trolley.

The invention further improves the conveying method of the heavy equipment for operating the nuclear power station, wherein the hoisting span of the all-ground crane is controlled within 9 m.

The method for conveying the heavy equipment of the operating nuclear power station is further improved in the step S5 of loading and conveying the heavy equipment by the transfer trolley, wherein the heavy equipment is lifted from the reactor plant to the transfer trolley or from the transfer trolley to the inside of the reactor plant by the ring crane arranged in the reactor plant.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description and appended claims, and may be learned by the practice of the invention as set forth hereinafter.

Drawings

Fig. 1 is an elevation schematic view of a transport system for operating nuclear power plant heavy equipment of the present invention.

Fig. 2 is a schematic plan view of a transport system for operating heavy equipment of a nuclear power plant according to the present invention.

Fig. 3 is a schematic view of the installation of the hydraulic lifting device (including the load balancing support, the base of the basic joint, the jacking control unit and the jack) and the plane transfer device (including the load platform, the transfer trolley and the hydraulic module car) without the standard joint unit of the conveying system for operating the heavy equipment of the nuclear power station.

Fig. 4 to 11 are schematic views of construction steps of a transportation method of heavy equipment for operating a nuclear power plant according to the present invention.

The correspondence of the reference numerals with the components is as follows:

a nuclear power plant 10; a reactor building 101; entering and exiting the factory building 102; hoisting the well 11; a factory building left door 111; a factory building right door 112; an equipment platform 12; a first shutter 13; a second shutter 14; a bridge crane 15; a rail 151; a crane 152; heavy equipment A; jacking up the upright post 20; the uniform load support 21; a base 22 of the basic section; a standard joint unit 23; hydraulic jacking power pack 30; a jack-up manipulation unit 31; a manipulation panel 311; a jack 32; a carrying platform 40; a transition platen 41; chain block 42; a transfer trolley 50; a hydraulic module vehicle 60; a bolster 61; an all-terrain crane 70; a hauling carriage 80.

Description of the embodiments

Detailed embodiments of the present invention will be disclosed herein. It is to be understood, however, that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various and alternative forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention.

In order to facilitate the understanding of the present invention, the following description will be given with reference to fig. 1 to 11 and the embodiments.

As shown in fig. 1 and 2, the nuclear power plant 10 includes a cylindrical reactor room 101 and an access room 102 built around the reactor room 101; the inner side of the outer wall of the in-out workshop 102 is provided with a hoisting well 11, the hoisting well 11 is a space with a square cross section, a left workshop door 111 and a right workshop door 112 which can be opened or closed are formed on two corresponding sides, a horizontally arranged equipment platform 12 is arranged between the top end of the hoisting well 11 and the reactor workshop 101, and an upper space and a lower space are formed in the inner space of the in-out workshop 102 by the equipment platform 12 in a separated mode; the reactor plant 101 is provided with a first gate 13 on a wall corresponding to the upper space for conveying heavy equipment A of a nuclear power unit inside the reactor plant 101, and a second gate 14 is further arranged between the equipment platform 12 and the hoisting well 11.

In one embodiment, the heavy equipment a may be a top cover of a pressure vessel, but is not limited thereto, and may be other heavy equipment disposed inside the reactor building 101.

As shown in fig. 1, a bridge crane 15 is additionally disposed in the upper space of the in-out factory building 102 at a position right above the hoisting well 11, and the bridge crane 15 includes a track 151 and a crane 152 for hoisting light equipment through the hoisting well 11. Specifically, the traveling crane 152 is a traveling crane with a lifting capacity of 90 t.

As shown in fig. 1 and 2, the transport system for operating heavy equipment of a nuclear power plant according to the present invention includes a hydraulic lifting device detachably installed in the hoist shaft 11 and a planar transfer device for carrying the heavy equipment a in cooperation therewith. The hydraulic lifting device comprises four lifting upright posts 20 and a hydraulic lifting power unit 30 for electrically controlling the lifting upright posts 20 to synchronously increase or decrease the sections; the plane transferring device comprises a carrying platform 40 arranged at the top end of the jacking upright 20, a transferring trolley 50 for transferring the heavy equipment A onto the carrying platform 40, and a hydraulic module vehicle 60 capable of simultaneously carrying the carrying platform 40, the transferring trolley 50 and the heavy equipment A.

As shown in fig. 4 to 11, the method for transporting heavy equipment for operating a nuclear power plant according to the present invention includes the steps of:

step S1 of building hydraulic lifting equipment: four uniform load supports 21 are paved on the ground of the hoisting well 11, and one basic section base 22 is arranged on each uniform load support 21.

Assembling the plane transfer equipment, namely, assembling step S2: disposing the carrying platform 40 on the hydraulic module vehicle 60, and disposing the transfer cart 50 on the carrying platform 40; when it is desired to introduce heavy equipment a into the reactor building 101, the heavy equipment a is fixedly disposed on the transfer trolley 50 at this step.

The whole plane transfer device is introduced into the step S3: adjusting the height of the deck of the hydraulic module car 60 to be about 10 to 20 cm higher than the top end of the base 22 of the basic section, and then driving the hydraulic module car 60 to integrally carry the plane transferring equipment into the hoisting well 11; the height of the deck of the hydraulic module car 60 is adjusted to be lowered to the position where the bearing platform 40 is erected and fixed on the base 22 of the hydraulic lifting equipment, and the hydraulic module car 60 is withdrawn from the lifting well 11.

Step S4 of adding sections and heightening of hydraulic lifting equipment: and lifting the standard section units 23 added into the base section seat 22 by utilizing the hydraulic lifting power set 30 until the top surface of the bearing platform 40 is lifted to be the same height as the top surface of the equipment platform 12 entering and exiting the factory building 102, wherein the uniform load support 21, the base section seat 22 and the standard section units 23 together form a lifting upright post 20.

And (5) loading and conveying the transfer trolley: paving a transition platform plate 41 between the bearing platform 40 and the equipment platform 12; operating the transfer trolley 50 to enter the equipment platform 12 via the transition platform plate 41 and to travel into the reactor building 101; when heavy equipment A needs to be introduced into the reactor plant 101, the transfer trolley 50 loads the heavy equipment A into the reactor plant 101, unloads the heavy equipment A, and then withdraws from the equipment platform 12 in an idle mode; when the heavy equipment a needs to be led out of the reactor building 101, the transfer trolley 50 enters the reactor building 101 in an empty load mode, loads the heavy equipment a, and exits back to the equipment platform 12 in an on-load mode.

Step S6 of reducing the hydraulic lifting equipment: operating the transfer trolley 50 to return to the bearing platform 40 in an original way; the hydraulic jacking power set 30 is utilized to jack the jacking upright post 20 so as to remove the standard joint unit 23 positioned at the bottommost end of the jacking upright post 20 until the top surface of the jacking upright post 20 is erected on the top end of the basic joint base 22, so that the joint is stopped and reduced.

A planar transshipment equipment refund step S7: operating the hydraulic module car 60 to drive into the space below the bearing platform 40, adjusting the height of the car plate of the hydraulic module car 60 to be about 10 to 20 centimeters higher than the top end of the basic section base 22 so as to prop up the bearing platform 40 and the objects borne on the bearing platform, and then driving the hydraulic module car 60 to withdraw from the hoisting well 11; when it is desired to take the heavy equipment a out of the reactor building 101, the heavy equipment a is unloaded from the transfer trolley 50 to the storage place in this step, and the hydraulic module trolley 60 transfers the unloaded heavy equipment a to the back-off.

In the embodiment of the present invention, the construction step further includes a preliminary preparation step S0 performed before the hydraulic lifting device building step S1. The pre-preparation step S0 comprises the steps of carrying out 1.1 standby load same-working-condition simulation test on the hydraulic lifting equipment and the plane transferring equipment before construction, carrying out safety education training on constructors, and unloading the working machines and tools outside the in-out workshop 102 and the hoisting well 11 according to the use requirement.

In the embodiment of the present invention, the order of the hydraulic lifting device setting-up step S1 and the plane transferring device assembling step S2 is not limited, and the step S1 may be performed first, the step S2 may be performed later, the step S2 may be performed first, the step S1 may be performed later, or the steps S1 and S2 may be performed synchronously at different places.

In the embodiment of the present invention, the load-bearing platform 40 and the heavy equipment a are connected and reinforced by a plurality of chain blocks 42.

In the embodiment of the present invention, the plane transferring apparatus assembling step S2 and the plane transferring apparatus unloading step S7 may hoist the heavy equipment a to the transferring trolley 50 or remove the heavy equipment a from the transferring trolley 50 by the all-terrain crane 70. Preferably, the hoisting span of the all-terrain crane 70 is controlled to be within 9 m.

In the embodiment of the present invention, the loading and conveying step S5 of the transfer trolley may be performed by hoisting the heavy equipment a by an annular crane disposed inside the reactor building 101, so that the heavy equipment a is hoisted from the reactor building 101 to the transfer trolley 50, or the heavy equipment a is hoisted from the transfer trolley 50 to the inside of the reactor building 101.

As shown in fig. 1 to 3, each lifting column 20 includes a uniform load support 21, a basic section base 22 and old standard section units 23; the load balancing support 21 is located at the bottommost end of the jacking upright 20, the base section base 22 is fixedly arranged on the load balancing support 21, the standard section unit 23 is used for feeding in a section adding or a section subtracting from the base section base 22, and the standard section unit 23 is connected and overlapped on the base section base 22.

In one embodiment, the uniform load support 21 may be a uniform load plate for uniformly dispersing and carrying the weight of the lifting column 20. In another embodiment, the load balancing stand 21 may be a sliding rail or a hydraulic axis vehicle plate, so as to achieve a load balancing effect, and have lifting and/or translation capabilities, so as to facilitate the adjustment of the installation position of the lifting stand 20 on the heavy equipment a.

Referring to fig. 1 to 3, in the embodiment of the present invention, the four jacking-posts 20 are identical in composition and structure, and the jacking-postsThe lifting column 20 takes the basic section base 22 as a base, and the lifting or lowering of the whole lifting column 20 is realized by adding or subtracting the standard section unit 23 from the basic section base 22. Wherein, the lowest height of the jacking upright post 20 is the height of the uniform load support 21 plus the basic section base 22; the highest height of the jacking upright 20 is the designed maximum use height. In the embodiment of the present invention, the height of the lifting columns 20 plus the thickness of the carrying platform 40 is about 19.5 meters (i.e., equal to the top surface height of the equipment platform 12). Specifically, the highest height (H _max ) Preferably in the range of more than 12.5 meters to 25 meters (12.5 m)<H _max ≦ 25m）。

In the embodiment of the present invention, the standard joint units 23 are fixedly connected by adopting a tongue-and-groove structure, so that the lifting construction speed of the jacking upright post 20 can reach 3 meters per hour (m/hr).

As shown in fig. 3, the hydraulic lifting power unit 30 includes a lifting control unit 31, a jack 32 electrically connected to and electrically controlled by the lifting control unit, a pump station, an oil pipe, a hydraulic valve, a sensor and a data line. The lifting column 20 is arranged on the base section base 22 through the jack 32, and is used for lifting the standard section unit 23 to increase the section, or is used for supporting the standard section unit 23 to decrease the section.

According to an embodiment of the present invention, the base 22 of the base section of each lifting column 20 is provided with a plurality of jacks 32 which are uniformly distributed. Preferably, four jacks 32 are provided on the base 22 of each of the jacking columns 20, each jack 32 having a lifting capacity of about 100t and a travel of about 1.2 meters, so that the nominal total lifting capacity of the system of the present invention is about 1600t.

According to the embodiment of the present invention, the lifting control unit 31 is a programmable logic controller (Programmable Logic Controller, PLC), the lifting control unit 31 is electrically connected to each jack 32, and the control panel 311 is used for monitoring parameters such as pressure, displacement and the like of a hydraulic cylinder of the jack 32 in real time, detecting and recording a displacement variation trend, and monitoring the variation of related parameters in real time for the working state of each valve element of the pump station; the jacking upright posts 20 are centrally controlled by the jacking control unit 31 through the hydraulic jacking power unit 30, so that the jacking or descending operation of each jacking upright post 20 is synchronously performed, the jacks 32 can synchronously lift under the condition of uneven force output, and the height difference between the jacking upright posts 20 is synchronously controlled within 3 mm.

In the present embodiment, the inner portion of the base 22 is defined as a first node position, and the upper portion is defined as a second node position. As shown in fig. 6 and 7, the lifting upright post 20 is lifted up to the standard section unit 23 at the first section position by the jack 32 to move up to the second section position, so that the first section position is free for feeding into the newly added standard section unit 23, and the construction of increasing the whole section of the lifting upright post 20 is realized; wherein, the first section position is free space because the standard section unit 23 is continuously propped in the section adding process; the first section position is filled with a standard section unit 23 after the last section addition to ensure the overall structural stability of the jacking leg 20. As shown in fig. 8 and 9, the lifting column 20 supports the standard joint unit 23 located at the second joint position by the jack 32, so that after the standard joint unit 23 located at the first joint position is disassembled and sent out of the base joint seat 22, the standard joint unit 23 located at the second joint position is lowered to the first joint position, and the whole joint reduction and lowering construction of the lifting column 20 is realized.

According to the embodiment of the present invention, the lifting column 20 and the hydraulic lifting power unit 30 may be further combined with a forklift to perform the joint increasing or joint decreasing of the standard joint unit 23.

Specifically, when the joint adding construction is performed, a forklift can be used to carry and lift a section of standard joint unit 23 to be introduced to a first joint position corresponding to the jacking upright post 20, then the standard joint unit 23 is further sent into the space of the first joint position, after the standard joint unit 23 is connected with other standard joint units 23 above the standard joint unit 23 in a reinforcing way, all the standard joint units 23 are lifted up to the first joint position by using the hydraulic jacking power unit 30, and the joint adding construction is completed.

Specifically, during the construction of reducing the section, the two standard section units 23 located at the first section position and the second section position are released from the fixed connection, the hydraulic lifting power set 30 is used for supporting the second section position and the standard section units 23 above the second section position, the forklift is used for carrying the standard section units 23 at the first section position out of the space at the first section position, and then the hydraulic lifting power set 30 is used for enabling the second section position and the standard section units 23 above the second section position to move downwards to the first section position, so that the construction of reducing the section is completed.

The carrying platform 40 is fixedly connected to the top ends of the four jacking columns 20, so as to synchronously lift or descend along with the four jacking columns 20.

In the embodiment of the present invention, the bearing platform 40 and the standard section 23 at the top end of the jacking upright 20 are connected by a pin or a bolt, so as to form a stable frame structure together. The size of the carrying platform 40 can be designed according to the construction environment and requirements.

The transfer trolley 50 is used for carrying the heavy equipment a for transfer between the gate 13 of the reactor building 101 to the carrying platform 40 via the equipment platform 12.

According to the embodiment of the present invention, as shown in fig. 3, the heavy equipment a is mounted on the transfer trolley 50 and then is disposed on the carrying platform 40, and the heavy equipment a is fastened to the carrying platform 40 by a plurality of chain hoists 42, so as to ensure that the heavy equipment a stably ascends or descends along with the carrying platform 40.

According to an embodiment of the present invention, the transfer trolley 50 is an SPMT hydraulic module vehicle. The transfer trolley 50 is preferably of a 4 x 4 axis (i.e. having four rows of four tires each). Specifically, the transfer trolley 50 may be formed by assembling a 4-axis SPMT module vehicle and an electrically driven PPU power head.

The hydraulic module car 60 is used to remove the carrying platform 40 and the transfer trolley 50, or remove the carrying platform 40, the transfer trolley 50 and the heavy equipment a from or load onto the top of the lifting column 20.

According to an embodiment of the present invention, the hydraulic module vehicle 60 is an SPMT hydraulic module vehicle. The hydraulic module car 60 is preferably of 8 x 4 axis (i.e. having four rows of eight tires). In the embodiment of the present invention, two cushion beams 61 are disposed on the top of the hydraulic module car 60 for dispersing and carrying the weight of the carrying platform 40.

In the embodiment of the present invention, as shown in fig. 1 and fig. 2, the elevation from the ground of the hoisting well 11 to the top surface of the equipment platform 12 is 19.5m; the width of the door opening of the left door 111 and the right door 112 is greater than 10.2 meters, each load balancing support 21 is a load balancing plate with the specification of 6mx2.4mx0.28m, the left-right direction of the load balancing support 21 on the drawing of fig. 2 is symmetrically arranged with the central lines of the first gate 13 and the second gate 14, the load balancing support 21 is tightly attached to the door frame edges of the left door 111 and the right door 112 in the front-back direction of the drawing of fig. 2, the space between the load balancing support 21 and the front-back direction is 5.4m, the width of the hydraulic module car 60 is 5.3m, and gaps of 0.5m are respectively arranged on the two sides of the load balancing support 21, so that the hydraulic module car 60 in four columns can drive into the space between the four lifting columns 20.

As shown in fig. 2, according to an embodiment of the present invention, the transport system for operating heavy equipment of a nuclear power plant further includes an all-terrain crane 70 and a hauling truck board 80; the all-terrain crane 70 is disposed at one side of the outside of the in-out plant 102, and is configured to hoist the heavy equipment a onto the hauling carriage 80 after the hydraulic module vehicle 60 has led the heavy equipment a out of the nuclear power plant 10, so as to haul the heavy equipment a to a storage location.

Referring to fig. 4 to 11, construction step diagrams of a method of transporting heavy equipment for operating a nuclear power plant according to the present invention are shown. The construction process of introducing the heavy equipment a into the reactor building 101 is sequentially performed in fig. 4 to 11, and the construction process of introducing the heavy equipment a out of the reactor building 101 is sequentially performed in fig. 11 to 4.

Example 1:

referring to fig. 2 and 3 in sequence with reference to fig. 4 to 11, the construction steps of introducing heavy equipment a into a reactor building 101 according to the method for transporting heavy equipment for operating a nuclear power plant of the present invention include:

early preparation step S0:

before the heavy equipment of the nuclear power station is put into replacement construction, carrying out 1.1 times of load same-working-condition simulation test on the hydraulic lifting equipment and the plane transferring equipment so as to verify that the performance of the hydraulic lifting equipment and the plane transferring equipment meets the requirements. The constructor enters the field, receives project department safety education and training, learns to enter the nuclear power station operation safety construction regulations, and strictly complies with nuclear power project management regulations. And providing a qualification certificate and a test report of the working machine and tools, and respectively unloading the working machine and tools to the outside of the hoisting port and the machine room according to the use requirements.

Step S1 of building hydraulic lifting equipment:

as shown in fig. 2, 3 and 4, 4 blocks of 6m×2.4m×0.28m uniform load supports 21 (the present embodiment uses uniform load plates as the uniform load supports 21) are laid on the ground of the lifting well 11, and the base section bases 22 of the lifting columns 20 are arranged on the 4 blocks of uniform load plates. As shown in the drawing direction of fig. 2, in the left-right direction of the uniform carrier plate, the center lines of the transport channels formed by the first gate 13, the second gate 14 and the equipment platform 12 are symmetrically arranged, the front-back direction is closely attached to the left door 111 and the right door 112 of the factory building, and the long sides of the uniform carrier plates on the same side are separated by about 5.4m; each base 22 is fixed on the uniform carrier board at a distance of about 8m from the center point; the maximum width of the hydraulic module car 60 is about 5.3m, and gaps larger than 5cm are respectively formed between two sides of the hydraulic module car 60 and the base 22 of the basic section, so that the hydraulic module car 60 can drive into the space between the jacking upright posts 20.

Assembling the plane transfer equipment, namely, assembling step S2:

as shown in fig. 3 and 4, the hydraulic module car 60 (8×4 axis SPMT module car) is assembled outside the nuclear power plant 10 by using an 80t truck crane (not shown), and the skid beams 61 and the load-bearing platform 40 are disposed on the hydraulic module car 60 to a proper height. The 4-axis SPMT module vehicle and the electric drive PPU power head are assembled to form the transfer trolley 50, and the transfer trolley 50 is integrally hoisted and stacked above the bearing platform 40, so that the transfer trolley 50 and the hydraulic module vehicle 60 are arranged in an up-down overlapping mode. Next, as shown in fig. 2, the heavy equipment a is hoisted to the transfer trolley 50 using the 500t all-terrain crane 70, and the hoisting span is controlled to be within 9m according to the performance table of the heavy equipment a. As shown in fig. 3, the heavy equipment a is bound and fixed to the carrying platform 40 by using chain block 42.

The whole plane transfer device is introduced into the step S3:

as shown in fig. 3 and 4, the height of the deck of the hydraulic module car 60 is adjusted so that the bottom surface of the carrying platform 40 is about 15cm higher than the top surface of the base 22 of the basic section arranged as described above; after confirming the height, the hydraulic module car 60 carries the upper carrier into the hoist well 11, and the carrier platform 40 is set up on the base 22, and then the hydraulic module car 60 is moved out of the hoist well 11 as shown in fig. 5.

Step S4 of adding sections and heightening of hydraulic lifting equipment:

as shown in fig. 3, 6 and 7, the hydraulic lifting power unit 30 is used to lift the standard joint units 23 added into the base 22 of the basic joint, so that 4 lifting columns 20 are synchronously lifted to 19.5m elevation. In this step, a forklift may be used in conjunction with the step of adding the sections of the lifting columns 20, and diagonal braces may be connected between the lifting columns 20 as needed to improve the stability of the carrying platform 40.

And (5) loading and conveying the transfer trolley:

as shown in fig. 7, a transition platform plate 41 is laid between the carrying platform 40 and the equipment platform 12; operating the transfer trolley 50 to enter the equipment platform 12 through the transition platform plate 41 and the second gate 14 to wait for a nuclear power plant worker to open the first gate 13; after the first gate 13 is opened, controlling the transfer trolley 50 to drive into the reactor plant 101; the heavy equipment A is unloaded and pre-stored by an annular crane (not shown) in the reactor building 101. Waiting for the nuclear power station personnel to finish radiation detection to reach the standard, driving the transfer trolley 50 out of the reactor factory building 101, parking the transfer trolley on the equipment platform 12 between the second gate 14 and the first gate 13, and closing the first gate 13 after the maintenance work of the nuclear power station personnel is finished.

Step S6 of reducing the hydraulic lifting equipment:

as shown in fig. 8, the transfer trolley 50 is operated to return to the bearing platform 40 in an original way; as shown in fig. 3, 8 and 9, the hydraulic lifting power unit 30 is used to prop the lifting column 20, so as to remove the standard joint unit 23 positioned at the bottommost end of the lifting column 20, as shown in fig. 10, until the top surface of the lifting column 20 is erected on the top end of the base joint base 22, so that the joint is stopped.

A planar transshipment equipment refund step S7:

as shown in fig. 11, the hydraulic module car 60 is operated to drive into the space below the loading platform 40, the height of the deck of the hydraulic module car 60 is adjusted to be about 10 to 20 cm higher than the top end of the base 22 of the basic section to prop up the loading platform 40 and the objects loaded thereon, and then the hydraulic module car 60 is driven to withdraw from the hoisting well 11 to retreat, thereby completing the work of introducing heavy equipment a into the reactor building 101.

Example 2:

referring to fig. 2 and 3 in sequence with reference to fig. 11 to 4, the construction steps of the method for transporting heavy equipment a of a nuclear power plant to be guided out of a reactor building 101 according to the present invention will be described:

early preparation step S0:

the same as the aforementioned step S0 of introducing the heavy equipment a into the reactor building 101.

Step S1 of building hydraulic lifting equipment:

as shown in fig. 2, 3 and 11, the step is the same as the step S1 of introducing the heavy equipment a into the reactor plant 101, and all the steps are performed by using the load balancing plates as the load balancing support 21 according to the same method and specification.

Assembling the plane transfer equipment, namely, assembling step S2:

as shown in fig. 3 and 11, this step is substantially the same as the aforementioned step S2 of introducing the heavy equipment a into the reactor building 101, except that the empty transfer trolley 50 is arranged to overlap the hydraulic module trolley 60.

The whole plane transfer device is introduced into the step S3:

as shown in fig. 3 and 11, the step is the same as the step S3 of introducing the heavy equipment a into the reactor building 101, the height of the deck of the hydraulic module truck 60 is adjusted to integrally carry the load-bearing object above the hydraulic module truck 60 into the hoist well 11, and the load-bearing platform 40 is erected on the base section seat 22, and then, as shown in fig. 10, the hydraulic module truck 60 is moved out of the hoist well 11.

Step S4 of adding sections and heightening of hydraulic lifting equipment:

as shown in fig. 3, 9 and 8, the step is the same as the step S4 of introducing the heavy equipment a into the reactor building 101, and the hydraulic lifting power unit 30 is used to synchronously raise 4 lifting columns 20 to 19.5 m. In this step, a forklift may be used to add joints, and diagonal braces may be connected as needed to increase the stability of the load-bearing platform 40.

And (5) loading and conveying the transfer trolley:

as shown in fig. 8, this step is substantially the same as the step S5 of introducing the heavy equipment a into the reactor building 101, and after the transition platform plate 41 is laid, the transfer trolley 50 is controlled to be driven into the reactor building 101, and the heavy equipment a is loaded onto the transfer trolley 50 by an endless crane (not shown) within the reactor building 101. As shown in fig. 7, the operator waits for the nuclear power station to complete the radiation detection and reach the standard, drives the transfer trolley 50 out of the reactor plant 101, parks the transfer trolley on the equipment platform 12 between the second gate 14 and the first gate 13, and closes the first gate 13 after the maintenance work of the operator of the nuclear power station is completed.

Step S6 of reducing the hydraulic lifting equipment:

as shown in fig. 7, the transfer trolley 50 is operated to return to the bearing platform 40 in an original way; as shown in fig. 3, 7 and 6, the hydraulic lifting power unit 30 is used to prop the lifting column 20, so as to remove the standard joint unit 23 positioned at the bottommost end of the lifting column 20, as shown in fig. 5, until the top surface of the lifting column 20 is erected on the top end of the base joint base 22, so that the joint is stopped.

A planar transshipment equipment refund step S7:

as shown in fig. 11, this step is substantially the same as the step S7 of introducing the heavy equipment a into the reactor building 101, and after the hydraulic module vehicle 60 is driven to exit the hoist well 11, the heavy equipment a is unloaded from the transfer trolley 50 to the hauling truck board 80 and transported to the storage place by using the all-terrain crane 70 as shown in fig. 2, and the hydraulic module vehicle 60 is moved to exit the reactor building 101 after transferring the unloaded heavy equipment a, thereby completing the work of the heavy equipment a.

The present invention has been described in detail with reference to the drawings and embodiments, and one skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the invention, which is defined by the appended claims.

Claims

1. A method of transporting heavy equipment for operating a nuclear power plant, the method comprising the steps of:

2. The method of transporting heavy equipment for operating a nuclear power plant as set forth in claim 1, wherein:

the construction step further comprises a preliminary preparation step S0 before the step S1; the preparation step S0 comprises the steps of carrying out 1.1 times of load and working condition simulation test on the hydraulic lifting equipment and the plane transferring equipment before construction, carrying out safety education and training on constructors, and respectively unloading the working machines and tools outside the in-out workshop and the lifting well according to the use requirement.

3. The method of transporting heavy equipment for operating a nuclear power plant as set forth in claim 1, wherein:

the bearing platform and the heavy equipment are connected and reinforced by a plurality of chain blocks.

4. The method of transporting heavy equipment for operating a nuclear power plant as set forth in claim 1, wherein:

the step S2 and the step S7 hoist the heavy equipment to the transfer trolley by an all-terrain crane, or remove the heavy equipment from the transfer trolley.

5. The method of transporting heavy equipment for operating a nuclear power plant as set forth in claim 4, wherein:

the hoisting span of the all-terrain crane is controlled within 9 m.

6. The method of transporting heavy equipment for operating a nuclear power plant as set forth in claim 1, wherein:

and the transferring trolley loading and conveying step S5 is used for lifting the heavy equipment through a ring crane arranged in the reactor factory building, so that the heavy equipment is lifted from the reactor factory building to the transferring trolley, or the heavy equipment is lifted from the transferring trolley to the inside of the reactor factory building.