CN109019468B - ACP1000 nuclear power station heavy equipment introduction method - Google Patents
ACP1000 nuclear power station heavy equipment introduction method Download PDFInfo
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- CN109019468B CN109019468B CN201810771439.2A CN201810771439A CN109019468B CN 109019468 B CN109019468 B CN 109019468B CN 201810771439 A CN201810771439 A CN 201810771439A CN 109019468 B CN109019468 B CN 109019468B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
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Abstract
The invention belongs to the technical field of equipment installation and construction of an ACP1000 nuclear power station. The invention discloses a method for introducing heavy equipment in an ACP1000 nuclear power station in order to realize the smooth introduction of the heavy equipment in the ACP 1000. The heavy equipment introduction method specifically comprises the following steps: step S1, lifting the heavy equipment to a 16.5m platform; step S2, mounting the turnover hoop; step S3, introducing a first stage of heavy equipment; step S4, connecting the heavy equipment with a circular crane; step S5, introducing a second stage of heavy equipment; in step S6, the heavy equipment is turned over. The method of the invention is adopted to carry out the leading-in operation on the heavy equipment in the ACP1000, which not only can ensure the smooth proceeding of the leading-in process, but also can shorten the construction period and improve the construction efficiency.
Description
Technical Field
The invention belongs to the technical field of equipment installation and construction of an ACP1000 nuclear power station, and particularly relates to a heavy equipment introduction method of the ACP1000 nuclear power station.
Background
The ACP1000 nuclear power station is used as a third-generation nuclear power technology independently developed in China, and the structural design of the ACP1000 nuclear power station is improved compared with that of a conventional M310 reactor core. In terms of plant structure design, the arc-shaped rails are adopted in the main equipment transportation channel in the ACP1000, which is different from the linear transportation rails adopted in the conventional M310, and compared with the turning space for installing the main equipment in the M310, the turning space for installing the main equipment in the ACP1000 is greatly reduced. At this time, if the main device in the ACP1000 is continuously introduced by using the conventional method for introducing the main device in M310, the introduction of the main device cannot be smoothly completed. For example, when the main device is introduced along the transportation track, if the method in the conventional M310 is adopted to perform wire rope traction on the main device by means of the hoisting device, since the transportation track in the ACP1000 has an arc-shaped structure, the position relationship between the force point and the force application point is always changed, so that the position of the hoisting machine cannot be accurately fixed, and meanwhile, if the angle between the traction direction and the track direction is too large, a lateral acting force along the arc center direction of the track is generated on the main device in the traction process, so that the main device turns on one side.
Disclosure of Invention
In order to realize the smooth introduction of heavy equipment in the ACP1000, the invention provides a heavy equipment introduction method of an ACP1000 nuclear power station. The heavy equipment introduction method specifically comprises the following steps:
step S1, lifting the heavy equipment to a 16.5m platform; lifting the heavy equipment horizontally from the ground to a 16.5m platform by a gantry crane, and placing the heavy equipment on a heavy-duty transport vehicle of a transport rail;
step S2, mounting the turnover hoop; sleeving and fixing the overturning hoop on the tail part of the heavy equipment on a 16.5m platform;
step S3, introducing a first stage of heavy equipment; pushing the heavy-load transport vehicle into the reactor plant by adopting a pushing mode along the arc-shaped transport track until the front-end heavy-load transport vehicle reaches the hookable position of the loop crane and stops pushing; wherein, in the propelling process, two sides of the heavy-duty transport vehicle respectively positioned on the inner and outer side transport tracks are independently propelled;
step S4, connecting the heavy equipment with a circular crane; the lifting appliance at the front end of the heavy equipment is connected with a lifting hook of a ring crane;
step S5, introducing a second stage of heavy equipment; continuously propelling the heavy equipment along the transportation track until the heavy equipment is introduced to the installation position of the overturning bracket and stops propelling;
step S6, overturning the heavy equipment; firstly, the overturning support is fixed, the overturning support is connected with the overturning embracing ring, and then the overturning of the heavy equipment from a horizontal state to an upright state is completed by means of lifting of the front end of the heavy equipment by the ring crane and supporting of the rear end of the heavy equipment by the overturning support.
Preferably, in step S3, two sets of independent hydraulic propulsion devices are used to propel the heavy-duty transport vehicle on the inner and outer transport rails, respectively.
Preferably, two sets of independent hydraulic cylinder systems are adopted for propelling the heavy-duty transport vehicle, and the two hydraulic cylinders are respectively arranged on two sides of the heavy-duty transport vehicle and are respectively contacted with the inner side track and the outer side track.
Preferably, the hydraulic cylinder is fixedly connected with the pushing vehicle; the pushing vehicle is positioned on the track, can slide back and forth along the track, and can be fixed at any position with the track through a fixing piece.
Preferably, in step S5, the second stage of the counterweight-type equipment is introduced by towing the front end of the heavy-duty equipment by the loop crane and supporting the rear end of the counterweight-type equipment by the heavy-duty transport vehicle.
It is further preferred that the front end of the heavy equipment is lifted by means of a loop crane before the introduction of the second stage of the heavy equipment, so that the front heavy-duty carrier vehicle is moved to the end of the transport track beforehand.
Preferably, in step S2, the turning embracing ring is of a split structure, and is composed of two semicircular rings, and a turning trunnion is disposed on each semicircular ring; after the overturning embracing ring is connected with the heavy equipment, the two overturning trunnions are positioned on the same horizontal line.
Further preferably, in step S6, a U-shaped seat is disposed on the top of the turning bracket, and the U-shaped seat is rotatably connected to the turning trunnion.
Preferably, the U-shaped seat is connected with the overturning support in a plug-in mounting mode, and an adjusting gasket is arranged between the U-shaped seat and the overturning support.
Preferably, in step S1, the acceleration instrument is installed on the heavy equipment to ensure that the acceleration instrument is in a normal working state and meets the hoisting test, then the heavy equipment is hoisted to a 16.5m platform, and after the hoisting is completed, the acceleration instrument is removed, and the acceleration value is read and recorded.
When the method is adopted to carry out the leading-in operation on the heavy equipment in the ACP1000 nuclear power station, the following beneficial effects are achieved:
1. according to the design of the arc-shaped transportation rail in the ACP1000 nuclear power station, the introduction of heavy equipment is divided into two stages, and the heavy equipment is introduced into two sides of the heavy-duty transportation vehicle which is respectively positioned on the inner side transportation rail and the outer side transportation rail in the first stage in an independent hydraulic cylinder propelling mode, so that the heavy equipment can smoothly turn. Like this, adopt the pneumatic cylinder not only can reduce the distance between stress point and the point of application of force but also can make the position of stress point and point of application of force move along with heavy equipment and adjust to make heavy equipment pass through the circle segment region in the transportation track smoothly, can also avoid adopting among the prior art hoisting equipment to carry out the unable fixed force point position promptly when long distance pulls the mounted position of hoisting equipment and the side direction capsizing power that probably produces heavy equipment in the traction process, thereby improve the efficiency of introduction process and pass through the regional fail safe nature of circle segment.
2. In the method, the rapid introduction of the heavy equipment along the linear track in the second stage of introduction process is completed by adopting a matching mode of traction of the front end of the ring crane on the heavy equipment and support of the rear end of the heavy equipment by the heavy-duty transport vehicle. Like this, not only can improve the introduction speed, improve the efficiency of construction, can remove the front end heavy load transport vechicle in advance moreover to reserve the space for subsequent upset operation, realize the high-efficient utilization to narrow and small space in the factory building, guarantee going on smoothly of construction.
3. In the method of the present invention, the operation of connecting the ring crane with the heavy equipment is advanced between the first-stage introduction and the second-stage introduction of the heavy equipment. Through advancing this operation, not only can utilize the ring to hang and carry out the introduction of second stage to heavy equipment, improve and introduce speed, avoided moreover in follow-up narrow and small space carrying on the ring hang inconvenient when being connected with heavy equipment to save follow-up time limit for a project, shorten the engineering time, provide the efficiency of construction.
Drawings
FIG. 1 is a schematic flow diagram of the introduction of a pressure vessel using the method of the present invention;
FIG. 2 is a schematic illustration of the present invention lifting a pressure vessel to a 16.5m platform;
FIG. 3 is a schematic diagram of the present invention illustrating the connection of the everting hoop to the pressure vessel;
FIG. 4 is a schematic structural view of the inverted embracing ring of the present invention;
FIG. 5 is a schematic illustration of a first stage introduction of a pressure vessel in accordance with the present invention;
FIG. 6 is a schematic illustration of a second stage introduction of the pressure vessel in accordance with the present invention;
FIG. 7 is a schematic illustration of the present invention with the pressure vessel inverted;
fig. 8 is a schematic structural view of the roll-over stand according to the present invention.
Detailed Description
The technical solution of the present invention will be further described with reference to the accompanying drawings and examples.
Next, the method of the present invention will be described in detail by taking an example of introducing a pressure vessel in an ACP1000 nuclear power plant. Similarly, the method of the invention is also suitable for the introduction operation of heavy equipment such as a steam generator, a voltage stabilizer and the like in the ACP1000 nuclear power plant.
Referring to fig. 1, the specific steps of introducing the pressure vessel in the ACP1000 nuclear power plant by using the introduction method of the present invention are as follows:
in step S1, the pressure vessel is lifted to a 16.5m platform. As shown in fig. 2, the pressure vessel 2 on the ground is lifted horizontally by means of a gantry crane 1 onto a 16.5m platform and the pressure vessel 2 is placed on a heavy-duty transport carriage 4 on a transport rail 3.
Generally, after the pressure vessel 2 is transported to a construction site by the flat-bed transport vehicle 5, the pressure vessel 2 with the transport frame is firstly lifted off the flat-bed transport vehicle 5 by the gantry crane 1, and then the transport frame is removed on the ground and lifted to a platform position of 16.5 m. Similarly, depending on the environment of the construction site, the transport frame can be removed from the flat car 5 and the pressure vessel 2 can be lifted directly to the 16.5m platform.
Preferably, a hoisting test is performed in advance before the pressure vessel is hoisted to the 16.5m platform, and after the safety and reliability of hoisting the pressure vessel are ensured, the pressure vessel is hoisted to the 16.5m platform.
In this embodiment, before the hoisting test, the acceleration instrument is first installed on the pressure vessel, and the normal working state of the acceleration instrument is ensured, and the requirement of the hoisting test is satisfied, then the hoisting test is performed, and after the test is completed, the pressure vessel is lifted to the 16.5m platform and placed on the heavy-load transport vehicle of the transport track, and finally the acceleration instrument is dismantled, and the acceleration value is read and recorded. Like this, can carry out real time monitoring through the acceleration instrument to the acceleration of gravity that the hoist and mount in-process produced to adjust hoist and mount speed according to monitoring structure, avoid taking place the hoist and mount and surpass the speed and lead to the damage of equipment internals, thereby improve the protection of hoist and mount process to equipment.
And step S2, mounting the turnover hoop. Referring to fig. 3, the gantry crane 1 is used to adjust the pressure vessel 2, and the overturning hoop 6 is sleeved and fixed at the tail of the pressure vessel 2 on a 16.5m platform.
Referring to fig. 4, in the present embodiment, the turn-over hoop 6 is a split structure, and is formed by two half-rings 61 connected by bolts, and each half-ring 61 is provided with a turn-over trunnion 62. Before the connection between the overturning embracing ring 6 and the pressure container 2 is carried out, the overturning embracing ring 6 is pre-assembled on the ground by means of a truck crane and a gantry crane, then the assembled overturning embracing ring 6 is overturned for 90 degrees to be in a vertical state, and after the installation direction is confirmed, the overturning embracing ring is lifted to a platform of +16.5m to be connected with the pressure container 2. In the connection process, the two overturning trunnions 62 are kept on the same horizontal line by adjusting the angle of the overturning hoop 6, and the two semicircular rings 61 are connected through bolts, so that the overturning hoop 6 is fixedly connected with the pressure container 2.
Step S3, a first stage of introduction is performed on the pressure vessel. Referring to fig. 5, the pressure vessel 2 is pushed into the reactor building 7 along the arc-shaped transportation rail 3 in a pushing manner until the front heavy-load transportation vehicle reaches the hookable position of the loop crane to stop pushing. In the propelling process, independent propelling is adopted for two sides of the heavy-duty transport vehicle 4 positioned on the inner and outer side transport rails 3 so as to realize smooth turning of the pressure container 2 along the arc-shaped transport rails.
Referring to fig. 5, in the embodiment, when the pressure vessel 2 is introduced, the hookable position of the loop crane is a position area which is approximately 2 to 3 meters away from the pool 9 in the horizontal direction after entering the facility gate 8 along the transportation rail 3.
Preferably, in this embodiment, two sets of independent hydraulic propulsion devices are used to independently propel both sides of the heavy-duty transport vehicle on the inner and outer transport rails. Like this, not only can utilize two sets of independent hydraulic pressure advancing device to produce different propulsive force respectively to the both sides of heavy-duty transport vechicle, produce bigger propulsive force promptly to being located orbital heavy-duty transport vechicle one side of outside, it rotates to be located orbital heavy-duty transport vechicle one side of inboard with the cooperation, the realization is to whole heavy-duty transport vechicle along the orbital smooth introduction of circular arc type transportation, and the hydraulic pressure advancing device that the use power density is higher, can guarantee to export occupation to the space of significantly reducing under the condition of enough power, thereby satisfy the requirement of carrying out the construction in narrow and small factory building.
Further preferably, in this embodiment, hydraulic cylinder system is selected for use to hydraulic pressure advancing device to place the pneumatic cylinder in between heavy-duty transport vechicle and the transportation track, utilize the reciprocal flexible action of pneumatic cylinder, realize the propulsion to heavy-duty transport vechicle and remove. For example, the cylinder body part of the hydraulic cylinder is in contact connection with a heavy-duty transport vehicle, and the piston rod of the hydraulic cylinder is placed in a recovery state and is in contact fixation with the transport rail. At the moment, the piston rod stretches out and acts on the conveying track, so that reverse acting force is generated on the heavy-duty transport vehicle, the heavy-duty transport vehicle is pushed to move along the conveying track, and meanwhile, the rotating angle of the heavy-duty transport vehicle is adjusted in real time by controlling the length relation of the two hydraulic cylinders stretching out at each time.
In this embodiment, a pusher carriage can also be arranged directly on the rail for the fastening of the hydraulic cylinder. The pushing vehicle can slide back and forth along the track, and can also be fixed at any position with the track through fixing parts such as a pin shaft or a positioning block, so that the pushing vehicle can be used as a fulcrum for pushing the heavy-duty transport vehicle to move along the track by using a hydraulic cylinder, and the introduction of a pressure container and the reverse moving-out of the heavy-duty transport vehicle are completed.
Likewise, in other embodiments, it is also possible to use the heavy-duty transport vehicle directly, i.e. using a drive moved by a hydraulic motor as the heavy-duty transport vehicle. Therefore, the output rotating speeds of different hydraulic motors are directly controlled, so that the rotating speeds of the wheels on the inner and outer side conveying rails can be controlled, the wheels on the inner and outer side conveying rails generate differential rotation in a turning area, and smooth turning of the pressure container is realized.
And step S4, connecting the pressure container with the circular hanging crane. And after the first stage of the pressure vessel is introduced, connecting a lifting appliance at the front end of the pressure vessel with a lifting hook of a ring crane to complete the connection between the pressure vessel and the ring crane.
In this embodiment, the fixed connection between the spreader and the front end of the pressure vessel is accomplished in a pre-installation manner. Like this, can accomplish the hoist smoothly in bigger space in advance and be connected with pressure vessel, improve the installation effectiveness, can avoid moreover carrying out probably because operating space is not enough and bring the problem of inefficiency when carrying out the on-the-spot installation of hoist in the narrow and small reactor factory building of space range to and probably cause the safe risk of colliding with the damage to equipment on every side. In addition, in the introduction process of the stage, the lifting appliance is temporarily protected by the protective sleeve, the protective sleeve is detached during connection, and the lifting appliance is connected with the ring crane lifting hook.
Step S5, a second stage of introduction is performed on the pressure vessel. As shown in fig. 6, the pressure vessel 2 is advanced along the transport rail 3 until the introduction of the pressure vessel 2 to the roll-over stand installation is stopped.
In the present exemplary embodiment, as shown in fig. 6, the pressure vessel 2 already passes through the region of the circular segment of the conveyor track during the introduction in the first phase, while the remaining second phase is introduced on a straight conveyor track. Therefore, after the connection between the looping crane 10 and the pressure vessel 2 is completed, the pressure vessel 2 is rapidly introduced in the second stage by adopting a matching mode that the looping crane 10 pulls the front end of the pressure vessel 2 and the heavy-load transport vehicle 4 supports and propels the rear end of the pressure vessel 2.
In addition, in this embodiment, the heavy-duty transport vechicle adopts split type structure, when being constituteed by front end heavy-duty transport vechicle and rear end heavy-duty transport vechicle, when carrying out pressure vessel's second stage and introducing, can mention about 10 with the help of the front end of ring crane 10 with pressure vessel 2, make front end heavy-duty transport vechicle and pressure vessel 2 break away from the contact to remove it to the terminal of transportation track in advance. Therefore, the circular crane 10 can smoothly pull the pressure container 2, the movement control of the front end heavy-load transport vehicle at the stage can be reduced, and the introduction speed at the second stage is improved.
In step S6, the pressure vessel is inverted. Referring to fig. 7, after the pressure vessel 2 is moved to a proper position, the turning bracket 11 is installed and the connection between the turning bracket 11 and the turning hoop 6 is completed, then the front end of the pressure vessel 2 is lifted by the hoop crane 10, the rear end of the pressure vessel 2 is supported by the turning bracket 11, the turning of the pressure vessel 2 from the horizontal state to the vertical state is completed, and then the turning bracket 11 and the turning hoop 6 are removed and the pressure vessel 2 is lifted to the installation position by the hoop crane 10, so that the introduction of the pressure vessel 2 is completed.
In the present embodiment, as shown in fig. 8, the turning bracket 11 is provided with a U-shaped seat 12 at the top for rotatably connecting with the turning trunnion 62 as a rotation fulcrum for turning the pressure vessel 2. Wherein, the upset support 11 carries out the rigidity through the built-in fitting, adopts the dismouting to be connected between U type seat 12 and the upset support 11, and be equipped with the adjusting shim between U type seat 12 and upset support 11, be used for adjusting the height of U type seat 12, thereby when carrying out upset support 11 and the upset is embraced and is connected between the ring 6, can adjust the height of upset trunnion 62, make two upset trunnions 62 keep on same straight line, guarantee the stability of upset process, avoid taking place the upset slope.
Claims (8)
1. A heavy equipment introduction method for an ACP1000 nuclear power station is characterized by comprising the following steps: step S1, lifting the heavy equipment to a 16.5m platform; lifting the heavy equipment horizontally from the ground to a 16.5m platform by a gantry crane, and placing the heavy equipment on a heavy-duty transport vehicle of a transport rail; step S2, mounting the turnover hoop; sleeving and fixing the overturning hoop on the tail part of the heavy equipment on a 16.5m platform; step S3, introducing a first stage of heavy equipment; pushing the heavy-load transport vehicle into the reactor plant by adopting a pushing mode along the arc-shaped transport track until the front-end heavy-load transport vehicle reaches the hookable position of the loop crane and stops pushing; wherein, in the propelling process, two sides of the heavy-duty transport vehicle respectively positioned on the inner and outer side transport tracks are independently propelled; step S4, connecting the heavy equipment with a circular crane; the lifting appliance at the front end of the heavy equipment is connected with a lifting hook of a ring crane; step S5, introducing a second stage of heavy equipment; continuously propelling the heavy equipment along the transportation track until the heavy equipment is introduced to the installation position of the overturning bracket and stops propelling; step S6, overturning the heavy equipment; firstly, fixing a turning support and completing the connection of the turning support and a turning embracing ring, and then completing the turning of the heavy equipment from a horizontal state to an upright state by means of the lifting of the front end of the heavy equipment by a ring crane and the supporting of the turning support on the rear end of the heavy equipment;
in step S3, two sets of independent hydraulic propulsion devices are used to propel the two sides of the heavy-duty transport vehicle respectively on the inner and outer transport rails independently;
two sets of independent hydraulic cylinder systems are adopted to propel the heavy-duty transport vehicle, and the two hydraulic cylinders are respectively arranged on two sides of the heavy-duty transport vehicle and are respectively contacted with the inner side track and the outer side track.
2. The heavy equipment introduction method of claim 1, wherein the hydraulic cylinder is fixedly connected to a pusher car; the pushing vehicle is positioned on the track, can slide back and forth along the track, and can be fixed at any position with the track through a fixing piece.
3. The heavy equipment introduction method of claim 1, wherein the introduction of the second stage of the heavy equipment is performed by towing the front end of the heavy equipment and supporting the rear end of the heavy equipment by the heavy transport vehicle through the hoist trolley in the step S5.
4. The heavy equipment introduction method according to claim 3, wherein the front end of the heavy equipment is lifted by means of a hoist trolley before the introduction of the second stage to move the front heavy-duty carrier to the end of the transport rail in advance.
5. The heavy equipment introduction method according to claim 1, wherein in the step S2, the overturning embracing ring is in a split structure, and is composed of two semicircular rings, and one overturning trunnion is provided on each semicircular ring; after the overturning embracing ring is connected with the heavy equipment, the two overturning trunnions are positioned on the same horizontal line.
6. The heavy equipment introduction method of claim 5, wherein in the step S6, a U-shaped seat is provided on a top of the tilt bracket, and the U-shaped seat is rotatably connected to the tilt trunnion.
7. The heavy equipment introduction method of claim 6, wherein the clevis is connected to the tilt bracket in a cartridge manner, and an adjustment washer is disposed between the clevis and the tilt bracket.
8. The heavy equipment introduction method according to claim 1, wherein in the step S1, the acceleration instrument is firstly installed on the heavy equipment, then the heavy equipment is hoisted to the 16.5m platform, and after the hoisting is completed, the acceleration instrument is removed and the acceleration value is read and recorded.
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| CN201810771439.2A CN109019468B (en) | 2018-07-13 | 2018-07-13 | ACP1000 nuclear power station heavy equipment introduction method |
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| CN112820430B (en) * | 2019-11-18 | 2024-05-14 | 中国核工业二三建设有限公司 | Method for installing and building graphite and carbon internal components of high-temperature gas cooled reactor and installation trolley |
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| CN203805699U (en) * | 2014-03-17 | 2014-09-03 | 胡建 | Automobile turning guide device |
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