Equipment and method for transferring AP1000 nuclear power main pump frequency converter

Abstract

The invention discloses a device for transferring an AP1000 nuclear power main pump frequency converter, which comprises a base, an operation platform, a shear fork mechanism, a hydraulic mechanism, an overturning tongue plate and a driving mechanism, the operation platform is located above the base, the shear fork mechanism is connected between the operation platform and the base and can be arranged in a longitudinally telescopic manner, and the hydraulic mechanism is connected with the overturning tongue plate. The hydraulic mechanism is in transmission connection with the shear fork mechanism and used for driving the shear fork mechanism to stretch or retract in the longitudinal direction so as to enable the operation platform to ascend and descend, the overturning tongue plate is rotationally installed at the front end of the operation platform, and the driving mechanism is in transmission connection with the overturning tongue plate and used for driving the overturning tongue plate to overturn. The transfer efficiency is high, the transfer safety is greatly improved, and the material cost and the labor cost are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant equipment installation and construction, and in particular to a device and method for transporting an AP1000 nuclear power main pump frequency converter. Background Art

[0002] At present, the frequency converters of AP1000 nuclear power main pumps in operation are all imported equipment. In order to reduce the operation failure of nuclear power plants and improve the operation efficiency, it is necessary to replace the frequency converters with domestic ones. Since the frequency converter is located about 8 meters above the ground and is not within the lifting range of the crane in the plant, it is necessary to set up a frequency converter transfer platform as a transportation channel.

[0003] In order to transport the inverter, the current common practice is to assemble a frame outside the operating platform where the inverter is located as a transport platform. Figure 1 As shown, the bench includes a base, a support component fixedly mounted on the base, and a support component fixedly mounted on the top of the support component for carrying the main pump inverter transformer. The existing method of manually assembling the bench has the following problems: 1. A scaffolding work platform needs to be set up before the bench is assembled, which affects the efficiency of bench assembly; 2. The assembly of the bench requires prefabrication and processing of a large number of profiles in advance. Due to the heavy and large size of the materials, it is difficult to transport them, which poses a great safety risk and seriously affects the efficiency of transformer transportation; 3. There are many equipment in transport around the bench assembly area, and there is a risk of accidental collision with equipment during material transportation and assembly. Summary of the invention

[0004] In view of the above-mentioned problems existing in the existing transport inverters, the present invention aims to provide a device and method for transporting AP1000 nuclear power main pump inverters, which can reduce costs, improve efficiency and reduce risks.

[0005] The specific technical solutions are as follows:

[0006] A device for transporting frequency converters of AP1000 nuclear power main pumps, comprising:

[0007] Base;

[0008] An operating platform, the operating platform is located above the base;

[0009] A scissor mechanism, which is connected between the operating platform and the base and can be longitudinally telescopically arranged;

[0010] A hydraulic mechanism, the hydraulic mechanism is drivingly connected to the scissor mechanism and is used to drive the scissor mechanism to extend or contract in the longitudinal direction so as to raise or lower the operating platform;

[0011] A flip tongue plate, the flip tongue plate being rotatably mounted on the front end of the operating platform;

[0012] A driving mechanism is drivingly connected to the flip tongue plate and is used to drive the flip tongue plate to flip.

[0013] As a further improvement and optimization of the present solution, the scissor mechanism includes at least two groups of scissor arms, and the two groups of scissor arms are respectively located on both sides of the bottom of the operating platform.

[0014] As a further improvement and optimization of the present solution, the hydraulic mechanism includes at least two hydraulic cylinders, and the two hydraulic cylinders are respectively connected to the two groups of scissor arms.

[0015] As a further improvement and optimization of the present solution, at least one synchronous pull rod is connected between the two groups of scissor arms.

[0016] As a further improvement and optimization of this solution, two synchronous pull rods are provided and are respectively located on both sides of the scissor arms.

[0017] As a further improvement and optimization of the present solution, the driving mechanism includes two flip cylinders, which are respectively located on both sides of the flip tongue plate, one end of the flip cylinder is hinged to the flip tongue plate, and the other end is hinged to the operating platform.

[0018] As a further improvement and optimization of this solution, guardrails are provided on both sides of the operating platform.

[0019] As a further improvement and optimization of the present solution, a limit switch is further provided on the flip cylinder, and the limit switch is connected to the hydraulic mechanism signal. When the flip cylinder is flipped outward and opened, the operating platform cannot be raised or lowered.

[0020] As a further improvement and optimization of this solution, it also includes a control interlocking system, which is electrically connected to the hydraulic mechanism and the driving mechanism respectively, and is used to control the operation of the hydraulic mechanism and the driving mechanism respectively.

[0021] A method for transporting an AP1000 nuclear power main pump frequency converter, comprising any of the above-mentioned devices for transporting an AP1000 nuclear power main pump frequency converter, the method comprising:

[0022] Step S1: using the crane located in the factory to lift the equipment to the preset inverter transfer channel exit;

[0023] Step S2: the hydraulic mechanism drives the scissor mechanism to extend longitudinally and causes the operating platform to rise to a height matching the inverter working platform;

[0024] Step S3: the driving mechanism drives the flip tongue plate to flip outward and open, and to dock with the inverter working platform stably and tightly;

[0025] Step S4: using a hydraulic trolley to transport the frequency converter to the operating platform through the flip tongue plate;

[0026] Step S5: the hydraulic mechanism drives the scissor mechanism to shrink in the longitudinal direction and lowers the operating platform to the ground;

[0027] Step S6: The inverter on the operating platform is hoisted to the designated transport vehicle by the crane equipment in the factory to complete the transfer operation.

[0028] Compared with the prior art, the above technical solution has the following positive effects:

[0029] (1) In the present invention, when transporting the inverter, the hydraulic mechanism drives the scissor mechanism to extend so that the operating platform rises to the same height as the inverter working platform, and then the driving mechanism drives the flip tongue plate to flip outward and open to overlap the inverter working platform. After the inverter is transported to the operating platform, the hydraulic mechanism drives the scissor mechanism to contract again so that the operating platform descends to the ground, and finally the inverter is transported to the transport vehicle. Not only is the transportation efficiency high, but the transportation safety is also greatly improved and the material cost and labor cost are reduced.

[0030] (2) The present invention utilizes a hydraulic mechanism to provide powerful and stable power. Through the precise extension and retraction of the scissor mechanism, the lifting height of the operating platform can be flexibly and accurately adjusted. This design eliminates the need for tedious re-setting of the platform when transferring equipment on platforms of different heights within a plant. Instead, the height of the operating platform can be simply adjusted, which greatly improves the convenience and efficiency of transfer and saves time and cost for users.

[0031] (3) In the present invention, a flip tongue plate is specially designed at the front end of the operating platform. When the operating platform rises to a height equal to that of the inverter working platform, the flip tongue plate can be driven by a driving mechanism to flip outward and directly connect to the inverter working platform without laying additional steel plates. This not only saves material costs, but also significantly improves the efficiency of equipment installation and docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the transport method using an assembled stand in the prior art;

[0033] Figure 2 It is a structural schematic diagram of the device and method for AP1000 nuclear power main pump frequency converter transport of the present invention;

[0034] In the attached figure: 1. base; 2. operating platform; 3. scissor arm; 4. hydraulic cylinder; 5. synchronous pull rod; 6. flip tongue plate; 7. flip cylinder; 21. guardrail. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0036] Figure 2 The structure diagram of the device and method for AP1000 nuclear power main pump inverter transport of the present invention is as follows: Figure 2 As shown, a preferred embodiment of an apparatus for transporting an AP1000 nuclear power main pump inverter is shown, comprising: a base 1, an operating platform 2, a scissor mechanism, a hydraulic mechanism, a flip tongue plate 6 and a driving mechanism, wherein the operating platform 2 is located above the base 1, the scissor mechanism is connected between the operating platform 2 and the base 1, and can be longitudinally telescopically arranged, the hydraulic mechanism is transmission-connected to the scissor mechanism, and is used to drive the scissor mechanism to extend or contract longitudinally so as to lift and lower the operating platform 2, the flip tongue plate 6 is rotatably installed at the front end of the operating platform 2, and the driving mechanism is transmission-connected to the flip tongue plate 6, and is used to drive the flip tongue plate 6 to flip.

[0037] In the present embodiment, when transporting the inverter, the hydraulic mechanism drives the scissors mechanism to extend so that the operating platform 2 rises to the same height as the inverter working platform, and then the driving mechanism drives the flip tongue plate 6 to flip open outward to overlap the inverter working platform. After the inverter is transported to the operating platform 2, the hydraulic mechanism drives the scissors mechanism to contract again to lower the operating platform 2 to the ground, and finally the inverter is transported to the transport vehicle. Not only is the transportation efficiency high, but it also greatly improves the safety of transportation and reduces material and labor costs.

[0038] In this embodiment, a hydraulic mechanism is used to provide powerful and stable power. Through the precise extension and retraction of the scissor mechanism, the lifting height of the operating platform 2 can be flexibly and accurately adjusted. This design makes it possible to transfer equipment on platforms of different heights in a factory without the need to tediously re-erect the stand. Instead, the height of the operating platform 2 can be simply adjusted, which greatly improves the convenience and efficiency of transportation and saves time and cost for users.

[0039] In this embodiment, a flip tongue plate 6 is specially designed at the front end of the operating platform 2. When the operating platform 2 rises to a height equal to the inverter working platform, the flip tongue plate 6 can be driven by a driving mechanism to flip outward and directly connect to the inverter working platform. There is no need to lay additional steel plates, which not only saves material costs but also significantly improves the efficiency of equipment installation and docking.

[0040] Furthermore, as a preferred embodiment, the scissor mechanism includes at least two groups of scissor arms 3 , and the two groups of scissor arms 3 are respectively located on two sides of the bottom of the operating platform 2 .

[0041] Furthermore, as a preferred embodiment, the hydraulic mechanism includes at least two hydraulic cylinders 4, and the two hydraulic cylinders 4 are respectively connected to the two groups of scissor arms 3. The hydraulic cylinders 4 are provided with hydraulic locks and the hydraulic pipelines are provided with explosion-proof valves to ensure the safety and stability of the lifting process so that it will not fall suddenly in the event of a power outage or a malfunction.

[0042] Furthermore, as a preferred embodiment, in order to ensure the synchronization effect of the two groups of scissor arms 3 and the connection strength of the overall structure, at least one synchronization rod 5 is connected between the two groups of scissor arms 3.

[0043] Furthermore, as a preferred embodiment, two synchronous pull rods 5 are provided and are respectively located on both sides of the scissor arms 3 .

[0044] Furthermore, as a preferred embodiment, the driving mechanism includes two flip cylinders 7, which are respectively located on both sides of the flip tongue plate 6, one end of the flip cylinder 7 is hinged to the flip tongue plate 6, and the other end is hinged to the operating platform 2.

[0045] Furthermore, as a preferred embodiment, guardrails 21 are provided on both sides of the operating platform 2 to ensure the safety of the staff.

[0046] Furthermore, as a preferred embodiment, a limit switch is also provided on the flip cylinder 7, and the limit switch is connected with the hydraulic mechanism signal. When the flip cylinder 7 is flipped outward and opened, the operating platform 2 cannot be raised or lowered.

[0047] Furthermore, as a preferred embodiment, it also includes a control interlocking system, which is electrically connected to the hydraulic mechanism and the driving mechanism respectively, and is used to control the operation of the hydraulic mechanism and the driving mechanism respectively. The control interlocking system can enable the lifting equipment to achieve dual-speed control at the upper and lower limit positions, and to buffer in advance, to ensure that the lifting process is smooth and impact-free, and to ensure the safety of equipment and personnel.

[0048] A method for transporting an AP1000 nuclear power main pump frequency converter, comprising any one of the above-mentioned devices for transporting an AP1000 nuclear power main pump frequency converter, the method comprising:

[0049] Step S1: Use the crane located in the factory to lift the equipment to the preset inverter transfer channel exit;

[0050] Step S2: The hydraulic mechanism drives the scissor mechanism to extend longitudinally and causes the operating platform 2 to rise to a height matching the inverter working platform;

[0051] Step S3: The driving mechanism drives the flip tongue plate 6 to flip outward and open, and to dock with the inverter working platform stably and tightly;

[0052] Step S4: using a hydraulic trolley to transport the frequency converter to the operating platform 2 through the flip tongue plate 6;

[0053] Step S5: the hydraulic mechanism drives the scissor mechanism to shrink in the longitudinal direction and lowers the operating platform 2 to the ground;

[0054] Step S6: The inverter on the operating platform 2 is hoisted to the designated transport vehicle by the crane equipment in the factory to complete the transfer operation.

[0055] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for transporting frequency converters of AP1000 nuclear power main pumps, characterized in that: include: Base; An operating platform, the operating platform is located above the base; A scissor mechanism, which is connected between the operating platform and the base and can be longitudinally telescopically arranged; A hydraulic mechanism, the hydraulic mechanism is drivingly connected to the scissor mechanism and is used to drive the scissor mechanism to extend or contract in the longitudinal direction so as to raise or lower the operating platform; A flip tongue plate, the flip tongue plate being rotatably mounted on the front end of the operating platform; A driving mechanism is drivingly connected to the flip tongue plate and is used to drive the flip tongue plate to flip.

2. The device for transporting the frequency converter of the AP1000 nuclear power main pump according to claim 1 is characterized in that: The scissor mechanism comprises at least two groups of scissor arms, and the two groups of scissor arms are respectively located at two sides of the bottom of the operating platform.

3. The device for transporting the frequency converter of the AP1000 nuclear power main pump according to claim 2 is characterized in that: The hydraulic mechanism comprises at least two hydraulic cylinders, and the two hydraulic cylinders are respectively connected to the two groups of scissor arms.

4. The device for transporting frequency converter of AP1000 nuclear power main pump according to claim 3 is characterized in that: At least one synchronous pull rod is connected between the two groups of scissor arms.

5. The device for transporting frequency converter of AP1000 nuclear power main pump according to claim 4 is characterized in that: The synchronous pull rods are provided in two pieces and are respectively located on both sides of the scissor arms.

6. The equipment for transporting frequency converter of AP1000 nuclear power main pump according to claim 1 is characterized in that: The driving mechanism comprises two flip oil cylinders, which are respectively located on both sides of the flip tongue plate, one end of the flip oil cylinder is hinged to the flip tongue plate, and the other end is hinged to the operating platform.

7. The equipment for transporting frequency converter of AP1000 nuclear power main pump according to claim 1 is characterized in that: Guardrails are arranged on both sides of the operating platform.

8. The equipment for transporting frequency converters of AP1000 nuclear power main pumps according to claim 1 is characterized in that: The tilting oil cylinder is also provided with a limit switch, and the limit switch is connected with the hydraulic mechanism signal. When the tilting oil cylinder is tilted outward and opened, the operating platform cannot be raised or lowered.

9. The equipment for transporting frequency converters of AP1000 nuclear power main pumps according to claim 1 is characterized in that: It also includes a control interlocking system, which is electrically connected to the hydraulic mechanism and the driving mechanism respectively, and is used to control the operation of the hydraulic mechanism and the driving mechanism respectively.

10. A method for transporting an AP1000 nuclear power main pump inverter, characterized in that: The device for transporting the frequency converter of the AP1000 nuclear power main pump comprises any one of claims 1 to 9, wherein the method comprises: Step S1: using the crane located in the factory to lift the equipment to the preset inverter transfer channel exit; Step S2: the hydraulic mechanism drives the scissor mechanism to extend longitudinally and causes the operating platform to rise to a height matching the inverter working platform; Step S3: the driving mechanism drives the flip tongue plate to flip outward and open, and to dock with the inverter working platform stably and tightly; Step S4: using a hydraulic trolley to transport the frequency converter to the operating platform through the flip tongue plate; Step S5: the hydraulic mechanism drives the scissor mechanism to shrink in the longitudinal direction and lowers the operating platform to the ground; Step S6: The inverter on the operating platform is hoisted to the designated transport vehicle by the crane equipment in the factory to complete the transfer operation.

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