Lifting device for installing internal equipment of CA04 module and operation method of lifting device

Abstract

The invention discloses a lifting device for installation of internal equipment of a CA04 module. The lifting device comprises a lifting platform, the lifting platform comprises a base, a shear fork type arm frame and a construction platform, the bottom of the shear fork type arm frame is installed in the base, the construction platform is installed on the top of the shear fork type arm frame, and a through hole is formed in the middle of the construction platform; the construction platform further comprises a guide assembly, the guide assembly is installed in the lifting platform and located in the middle of the through hole of the construction platform, and the guide assembly is composed of a plurality of detachable square frames. The device further comprises a support assembly, the support assembly is installed in the guide assembly, and the support assembly is composed of a plurality of detachable tripods. Compared with a traditional scaffold, the scaffold can be rapidly and freely adjusted to any height in the CA04 module through the lifting platform and the guide rail measuring assembly, so that equipment at any height in the module can be rapidly installed, and sight is not prone to being blocked.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment installation within a CA04 module, and in particular to the installation of metal insulation for a pressure vessel barrel section spanning from the bottom to the highest point of the CA04 module and an installation sleeve for an off-core nuclear detection detector. Background Art

[0002] The metal insulation for the nuclear island pressure vessel barrel section is installed on the octagonal inner wall of the CA04 module. It consists of seven layers of insulation brackets, six layers of insulation blocks, and one layer of central radiation shielding assembly, covering an elevation of -6.895m to -0.68m and a 360-degree angle. The nuclear island's external nuclear detector mounting sleeves are installed on the octagonal inner wall of the CA04 module. Eight sets of sleeves are installed, covering elevations of -7.122m to -0.842m and located at the corners of the module's octagon. The fast neutron flux channel is installed on the upper inner wall of the CA04 module between 0° and 45°, covering elevations of -6.63m to -0.64m. All of this equipment must be installed in mid-air, and the installation process consists of three steps: marking, adjusting, and securing.

[0003] There are at least the following problems in the installation process: (1) The above equipment involves a large height span, and personnel must freely adjust the equipment at different elevations and orientations in the CA04 module space. Traditional scaffolding is time-consuming and labor-intensive to set up, and the measuring instruments are easily blocked; (2) The above equipment is not embedded in the CA04 module, but protrudes from the inner wall surface. The actual construction space is small, and the traditional scaffolding layout is very likely to interfere with the equipment. It is necessary to set up space for personnel construction and equipment installation and adjustment; (3) There are a large number of metal insulation items in the pressure vessel barrel section, and there is no suitable temporary storage space inside the CA04 module, which affects the continuity of construction. Summary of the Invention

[0004] The present invention aims to solve the problem of equipment installation in the three-dimensional space of the CA04 module. To this end, one object of the present invention is to provide a lifting device and operating method for installing equipment within the CA04 module. The lifting device is used to install equipment within the CA04 module, making installation easier, faster, simpler, and safer.

[0005] To achieve the above object, the technical solution of the present invention is: A lifting device for installing internal equipment of a CA04 module comprises a lifting platform, wherein the lifting platform comprises a base, a scissor-type boom and a construction platform, wherein the bottom of the scissor-type boom is installed in the base, and the construction platform is installed on the top of the scissor-type boom, and a through hole is provided in the middle of the construction platform; further comprising a guide assembly, wherein the guide assembly is installed inside the lifting platform and located in the middle of the through hole of the construction platform, and the guide assembly is composed of a plurality of detachable square frames; further comprising a bracket assembly, wherein the bracket assembly is installed inside the guide assembly, and the bracket assembly is composed of a plurality of detachable tripods.

[0006] Further to the above solution, a plurality of retractable flange plates are provided at the bottom of the construction platform, a roller track is provided at the bottom of the construction platform, a plurality of rollers are provided on the flange plates, and the rollers are installed in the roller track.

[0007] Further to the above solution, the construction platform as a whole is an annular structure with through holes, the flange plates are fan-shaped structures, and the number of the flange plates is eight.

[0008] Taking the above solution a step further, a fixing device is provided at each of the four corners of the outer side of the base, one end of the fixing device is connected to the base, and the other end is connected to the inner wall of the CA04 module.

[0009] Further to the above solution, a base track is provided inside the base, one end of the scissor-type arm is movably connected to the base track, and the other end is provided with a pulley, and the pulley is located in the base track.

[0010] Taking the above scheme a step further, the square frame is composed of several horizontally arranged first square tubes and several vertically arranged first round tubes, four first square tubes are grouped together and connected to both ends of the first round tube respectively, one end of the first round tube is a plug and the other end is a socket, the plug of the first round tube can be inserted into the socket of the first round tube, and the first square tube is provided with a first bolt hole that passes through the upper and lower end surfaces of the first square tube.

[0011] Taking the above scheme a step further, the tripod is composed of several horizontally arranged second square tubes and several vertically arranged second round tubes. Three second square tubes are grouped together and connected to both ends of the second round tube. One end of the second round tube is a plug and the other end is a socket. The plug of the second round tube can be inserted into the socket of the second round tube. The second square tube is provided with a second bolt hole that passes through the upper and lower end surfaces of the second square tube.

[0012] Furthermore, based on the above solution, guardrails arranged at intervals are provided on the edge of the construction platform, a manhole is provided on the side of the construction platform close to the guide assembly, and a ladder is provided at the bottom of the guide assembly.

[0013] Furthermore, based on the above solution, a baffle is provided at the outer end of the flange plate, a plurality of sockets are provided on the flange plate, and a latch is provided on the construction platform, and the latch is adapted to the socket.

[0014] A method for operating a lifting device for installing internal equipment of a CA04 module comprises the following steps: S1. Lift the lifting platform into the CA04 module. Use a crane to adjust the lifting platform's direction so that the gaps between the flange plates align with the mounting sleeve of the off-core nuclear detector. After the orientation adjustment is complete, prepare H-shaped steel at the bottom of the base to adjust the level of the lifting platform. Once the platform is essentially level, place the base on the H-shaped steel and weld the base and H-shaped steel together. S2. After the lifting platform is adjusted, prepare the fixing device and weld one end of the fixing device to the base and the other end to the CA04 module; S3. After the lifting platform is stable, use a crane to hoist the guide assembly into the construction platform. The square frames can be hoisted in one by one or the entire guide assembly. After the positioning is completed, the bracket assembly is hoisted into the guide assembly. The tripods can be hoisted in one by one or the entire bracket assembly. The guide assembly and the bracket assembly can be fixed by welding with angle steel or channel steel. S4. Operate the power unit or use the remote control to raise the lifting platform to the height where the adjustment tooling on the upper end of the external nuclear detection detector mounting sleeve is located. Stop the platform, open the flange plate, and lock it. Personnel can then use the flange plate to adjust the upper end of the equipment. Install measuring instruments on the bracket assembly to accurately measure the equipment. Cooperate with the bottom adjustment personnel to complete the verticality and position adjustment of the external nuclear detection detector mounting sleeve. S5. Operate the power unit or use the remote control to raise the lifting platform to the upper end of the fast neutron fluence channel and stop. Open the flange plate and lock it. Personnel can use the flange plate to adjust the upper end of the equipment. Install measuring instruments on the bracket assembly to accurately measure the equipment. Cooperate with the bottom adjustment personnel to complete the verticality and position adjustment of the fast neutron fluence channel. S6. Operate the power unit or use the remote control device to lift the lifting platform, stop at the metal insulation installation elevation of any layer of the pressure vessel, temporarily store the insulation items for subsequent installation on the construction platform, open the flange plate, and lock it. Personnel can install the insulation items on the flange plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Compared with traditional scaffolding, the present invention can be quickly and freely adjusted to any height inside the CA04 module through the lifting platform and guide rail measurement components, so that equipment at any height inside the module can be quickly installed and is not easily blocked from view.

[0016] 2. The fixing device of the present invention makes the lifting platform stable inside CA04, ensuring the safety of personnel.

[0017] 3. The construction platform and flange plate of the present invention can temporarily store items, and the gap after the flange plate is extended can be used as the installation space for the installation sleeve of the off-core nuclear detection detector, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall stereogram of the present invention; Figure 2 This is the overall front view of the present invention; Figure 3 is a perspective view of the guide assembly and the bracket assembly of the present invention; Figure 4 This is a diagram showing the flange plate of the present invention in an expanded state; Figure 5 This is a diagram showing the connection state of the construction platform and the flange plate of the present invention; Figure 6 This is the CA04 module schematic Figure 1 ; Figure 7 This is the CA04 module schematic Figure 2 ; Figure 8 It is a working state diagram of the present invention.

[0019] Reference numerals: 1. Lifting platform, 101. Base, 1011. Base track, 102. Scissor-type arm, 1021. Pulley, 103. Construction platform, 1031. Roller track, 1032. Guardrail, 1033. Manhole, 104. Flange plate, 1041. Roller, 1042. Baffle, 1043. Socket; 2. Guide assembly, 201. Square frame, 2011. First square tube, 2012. First round tube, 2013. First bolt hole; 3. Bracket assembly, 301. Tripod, 3011. Second square tube, 3012. Second round tube, 3013. Second bolt hole; 4. Fixing device; 5. Climbing ladders; 6.CA04 module; 7. Installation sleeve of the out-of-core nuclear detection detector; 8. Metal insulation of pressure vessels; 9. Fast neutron flux channel. DETAILED DESCRIPTION

[0020] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

[0021] The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the same ordinary meaning as understood by persons of ordinary skill in the art to which this invention belongs. The use of "a," "an," and similar terms in this specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one. "A plurality" includes two and is equivalent to at least two. "Includes" or "comprising" and similar terms mean that the elements or items preceding "includes" or "comprising" include the elements or items listed after "includes" or "comprising," and their equivalents, and do not exclude other elements or items. "Connected" or "connected" and similar terms are not limited to physical or mechanical connections and may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0022] Example 1: Please refer to Figure 1-5 A lifting device for installing internal equipment of a CA04 module 6 includes a lifting platform 1, the lifting platform 1 includes a base 101, a scissor-type arm 102 that can stay at any position inside the CA04 module 6, and a construction platform 103 for construction work, the bottom of the scissor-type arm 102 is installed in the base 101, the construction platform 103 is installed on the top of the scissor-type arm 102, a through hole is provided in the middle of the construction platform 103, and a power unit is provided on the outside of the lifting platform 1 for lifting and lowering the lifting platform 1; it also includes a guide assembly 2, which plays a guiding role. The guide assembly 2 is installed inside the lifting platform 1 and is located in the middle of the through hole of the construction platform 103. The guide assembly 2 is composed of several detachable square frames 201; it also includes a bracket assembly 3, which plays a supporting role. Various measuring instruments can be installed on the bracket assembly 3. The bracket assembly 3 is installed inside the guide assembly 2. The bracket assembly 3 is composed of several detachable tripods 301.

[0023] In this embodiment, the power unit is composed of a hydraulic system and an electrical system, which can drive the scissor-type boom 102 to move and rise and fall.

[0024] Furthermore, the bottom of the construction platform 103 is provided with several retractable flange panels 104. The bottom of the construction platform 103 is provided with rollers 1041 and tracks 1031. The flange panels 104 are provided with several rollers 1041, which are installed in the roller 1041 tracks 1031. The cooperation between the rollers 1041, tracks 1031, and the rollers 1041 allows the flange panels 104 to freely move in and out of the bottom of the construction platform 103. Opening the flange panels 104 facilitates construction workers, while retracting the flange panels 104 reduces floor space. Specifically, the construction platform 103 is an annular structure with through holes, and the flange panels 104 are fan-shaped structures. There are eight flange panels 104.

[0025] Furthermore, a fixing device 4 is provided at each of the four outer corners of the base 101. The fixing device 4 is made of channel steel, and its length and shape are adapted to the structure of the CA04 module 6. One end of the fixing device 4 is connected to the base 101, and the other end is connected to the inner wall of the CA04 module 6 to fix the base 101 of the lifting platform 1.

[0026] Furthermore, a base track 1011 is provided inside the base 101 , one end of the scissor-type arm 102 is movably connected to the base track 1011 , and the other end is provided with a pulley 1021 . The pulley 1021 is located in the base track 1011 and can move in the base track 1011 .

[0027] It is feasible to set a block at the outer end of the base rail 1011, and place sleepers or channel steel between the pulley 1021 and the block, which can serve as a safety for locking the lifting platform 1 at a certain height.

[0028] Furthermore, the square frame 201 is composed of eight horizontally arranged first square tubes 2011 and four vertically arranged first circular tubes 2012, wherein the four first square tubes 2011 are respectively connected to the two ends of the first circular tube 2012 in a group, one end of the first circular tube 2012 is a plug and the other end is a socket, and the plug of the first circular tube 2012 can be inserted into the socket of the first circular tube 2012, and the shape is plug-fitted, which facilitates the stacking of two adjacent square frames 201; the first square tube 2011 is provided with a first bolt hole 2013 that passes through the upper and lower end surfaces of the first square tube 2011, and is installed in the first bolt hole 2013 of the upper and lower square frames 201 by a bolt group, thereby fixing and preventing the square frame 201 from loosening.

[0029] Furthermore, the tripod 301 is composed of six horizontally arranged second square tubes 3011 and three vertically arranged second circular tubes 3012. The three second square tubes 3011 are respectively connected to the two ends of the second circular tube 3012 in a group. One end of the second circular tube 3012 is a plug and the other end is a socket. The plug of the second circular tube 3012 can be inserted into the socket of the second circular tube 3012. The shape is plug-fitting, which facilitates the stacking of two adjacent tripods 301; the second square tube 3011 is provided with second bolt holes 3013 that pass through the upper and lower end surfaces of the second square tube 3011, and the bolt group is used to install it in the second bolt holes 3013 of the upper and lower tripods 301, so as to fix and prevent the tripod 301 from loosening.

[0030] It is feasible to drill holes at the insertion position of the first round tube 2012 or the second round tube 3012 and assemble a bolt group to further lock the two adjacent square frames 201 or tripod frames 301 .

[0031] Furthermore, guardrails 1032 are arranged at intervals on the edge of the construction platform 103. The guardrails 1032 serve to protect the construction workers, and the guardrails 1032 are arranged at intervals for the construction workers to enter and exit the flange plate 104 for construction; a manhole 1033 is provided on the side of the construction platform 103 close to the guide assembly 2, and a cover is provided on the manhole 1033, so that the construction workers can enter the construction platform 103 through the manhole 1033; a ladder 5 is provided at the bottom of the guide assembly 2, which can allow the construction workers to enter the construction platform 103 when the lifting platform 1 is raised to a certain height.

[0032] Furthermore, a baffle 1042 is provided at the outer end of the flange plate 104, and a number of sockets are opened on the flange plate 104. A latch is provided on the construction platform 103, and the latch is adapted to the socket. When the flange plate 104 is opened, the latch can be inserted into the socket to form a plug-in fit, thereby locking the flange plate 104 to prevent the flange plate 104 from freely extending and retracting.

[0033] It is feasible that a plurality of reinforcing ribs may be provided at the bottom of the flange plate 104 to enhance the strength and load-bearing capacity of the flange plate 104 .

[0034] It should be noted that when in use: the overall length of the guide component 2 should be lower than the internal height of the CA04 module 6 and reserve the height space of the drilling platform required for drilling the pressure vessel support above the CA04 module 6, and the guide component 2 corresponds to the central square hole of the construction platform 103. When the scissors-type arm 102 is raised and lowered, the construction platform 103 can move up and down along the guide component 2; the height of the bracket component 3 is basically the same as that of the guide component 2, and the measuring instrument is arranged on the top of the bracket component 3, and the stability is not affected by the rise and fall of the lifting platform 1; and the square frame 201 and the tripod 301 are both frame structures, which will not affect the field of view of the construction personnel and the measuring instruments.

[0035] Example 2: Please refer to Figure 1-8 A method for operating a lifting device for installing internal equipment of a CA04 module 6 comprises the following steps: S1. Lift the lifting platform 1 into the CA04 module 6. Use a crane to adjust the direction of the lifting platform 1 so that the gaps between the flange plates 104 are aligned with the mounting sleeve 7 of the external nuclear detection detector. After the orientation adjustment is completed, prepare H-shaped steel at the bottom of the base 101 to adjust the level of the lifting platform 1. After the base 101 is basically level, place the base 101 on the H-shaped steel and weld the base 101 to the H-shaped steel. S2. After the lifting platform 1 is adjusted, prepare the fixing device 4 and weld one end of the fixing device 4 to the base 101 and the other end to the CA04 module 6; S3. After the lifting platform 1 is stabilized, the guide assembly 2 is hoisted into the construction platform 103 by means of a crane. The square frames 201 can be hoisted in one by one or the entire guide assembly 2 can be hoisted in. After the positioning is completed, the bracket assembly 3 is hoisted into the guide assembly 2. The tripods 301 can be hoisted in one by one or the entire bracket assembly 3 can be hoisted in. The guide assembly 2 and the bracket assembly 3 can be fixed by welding with angle steel or channel steel. S4. Operate the power unit or use the remote control device to raise the lifting platform 1 to the height where the adjustment tooling of the upper end of the external nuclear detection detector mounting sleeve 7 is located. Stop the platform, open the flange plate 104, and lock it. Personnel can adjust the upper end of the equipment using the flange plate 104. Install measuring instruments on the bracket assembly 3 to accurately measure the equipment. Cooperate with the bottom adjustment personnel to complete the verticality and position adjustment of the external nuclear detection detector mounting sleeve 7. S5. Operate the power unit or use the remote control to raise the lifting platform 1 to the upper end of the fast neutron flux channel 9 and stop. Open the flange plate 104 and lock it. The personnel can adjust the upper end of the equipment using the flange plate 104. Install the measuring instrument on the bracket assembly 3 to accurately measure the equipment. Cooperate with the bottom adjustment personnel to complete the verticality and position adjustment of the fast neutron flux channel 9. S6. Operate the power unit or use the remote control device to lift the lifting platform 1, stop at the installation elevation of the metal insulation 8 of the pressure vessel on any layer, temporarily store the insulation items for subsequent installation on the construction platform 103, open the flange plate 104, and lock it. Personnel can install the insulation items on the flange plate 104.

[0036] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for installing internal equipment of a CA04 module, comprising a lifting platform, characterized in that: The lifting platform includes a base, a scissors-type boom and a construction platform, the bottom of the scissors-type boom is installed in the base, the construction platform is installed on the top of the scissors-type boom, and a through hole is provided in the middle of the construction platform; it also includes a guide assembly, which is installed inside the lifting platform and located in the middle of the through hole of the construction platform, and the guide assembly is composed of several detachable square frames; it also includes a bracket assembly, which is installed inside the guide assembly, and the bracket assembly is composed of several detachable tripods.

2. The lifting device for installing internal equipment of the CA04 module according to claim 1 is characterized in that: A plurality of retractable flange plates are provided at the bottom of the construction platform, a roller track is provided at the bottom of the construction platform, a plurality of rollers are provided on the flange plates, and the rollers are installed in the roller track.

3. The lifting device for installing internal equipment of the CA04 module according to claim 2 is characterized in that: The construction platform as a whole is an annular structure with through holes, the flange plates are fan-shaped structures, and the number of the flange plates is eight.

4. The lifting device for installing internal equipment of the CA04 module according to claim 1, characterized in that: A fixing device is provided at each of the four corners of the outer side of the base. One end of the fixing device is connected to the base, and the other end is connected to the inner wall of the CA04 module.

5. The lifting device for installing internal equipment of the CA04 module according to claim 4 is characterized in that: A base track is provided inside the base, one end of the scissor-type arm is movably connected to the base track, and the other end is provided with a pulley, and the pulley is located in the base track.

6. The lifting device for installing internal equipment of the CA04 module according to claim 1, characterized in that: The square frame is composed of several horizontally arranged first square tubes and several vertically arranged first round tubes. Four first square tubes are formed into a group and are respectively connected to the two ends of the first round tube. One end of the first round tube is a plug and the other end is a socket. The plug of the first round tube can be inserted into the socket of the first round tube. The first square tube is provided with a first bolt hole that passes through the upper and lower end surfaces of the first square tube.

7. The lifting device for installing internal equipment of the CA04 module according to claim 1, characterized in that: The tripod is composed of several horizontally arranged second square tubes and several vertically arranged second round tubes. Three second square tubes are grouped together and connected to the two ends of the second round tube respectively. One end of the second round tube is a plug and the other end is a socket. The plug of the second round tube can be inserted into the socket of the second round tube. The second square tube is provided with a second bolt hole that passes through the upper and lower end surfaces of the second square tube.

8. The lifting device for installing internal equipment of the CA04 module according to claim 5, characterized in that: The edge of the construction platform is provided with guardrails arranged at intervals, a manhole is provided on the side of the construction platform close to the guide assembly, and a ladder is provided at the bottom of the guide assembly.

9. The lifting device for installing internal equipment of the CA04 module according to claim 3, characterized in that: A baffle is provided at the outer end of the flange plate, a plurality of insertion holes are opened on the flange plate, and a latch is provided on the construction platform, and the latch is adapted to the insertion hole.

10. A method for operating a lifting device for installing internal equipment of a CA04 module, characterized in that: The following steps are involved: S1. Lift the lifting platform into the CA04 module. Use a crane to adjust the lifting platform's direction so that the gaps between the flange plates align with the mounting sleeve of the off-core nuclear detector. After the orientation adjustment is complete, prepare H-shaped steel at the bottom of the base to adjust the level of the lifting platform. Once the platform is essentially level, place the base on the H-shaped steel and weld the base and H-shaped steel together. S2. After the lifting platform is adjusted, prepare the fixing device and weld one end of the fixing device to the base and the other end to the CA04 module; S3. After the lifting platform is stable, use a crane to hoist the guide assembly into the construction platform. The square frames can be hoisted in one by one or the entire guide assembly. After the positioning is completed, the bracket assembly is hoisted into the guide assembly. The tripods can be hoisted in one by one or the entire bracket assembly. The guide assembly and the bracket assembly can be fixed by welding with angle steel or channel steel. S4. Operate the power unit or use the remote control to raise the lifting platform to the height where the adjustment tooling on the upper end of the external nuclear detection detector mounting sleeve is located. Stop the platform, open the flange plate, and lock it. Personnel can then use the flange plate to adjust the upper end of the equipment. Install measuring instruments on the bracket assembly to accurately measure the equipment. Cooperate with the bottom adjustment personnel to complete the verticality and position adjustment of the external nuclear detection detector mounting sleeve. S5. Operate the power unit or use the remote control to raise the lifting platform to the upper end of the fast neutron fluence channel and stop. Open the flange plate and lock it. Personnel can use the flange plate to adjust the upper end of the equipment. Install measuring instruments on the bracket assembly to accurately measure the equipment. Cooperate with the bottom adjustment personnel to complete the verticality and position adjustment of the fast neutron fluence channel. S6. Operate the power unit or use the remote control device to lift the lifting platform, stop at the metal insulation installation elevation of any layer of the pressure vessel, temporarily store the insulation items for subsequent installation on the construction platform, open the flange plate, and lock it. Personnel can install the insulation items on the flange plate.

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