A pump-hanging support device for a high-pressure cooler of a nuclear primary pump

Abstract

A kind of hanging pump support device of high-pressure cooler of nuclear main pump, comprising first support component for connecting the upper cylinder of high-pressure cooler and second support component for connecting the lower cylinder of high-pressure cooler, and third support component for connecting the motor shell of nuclear main pump and fourth support component, third support component is used to connect first support component, fourth support component is used to connect second support component and third support component.The utility model structure is compact, it is applicable to install in the nuclear main pump room of narrow space, it is convenient to dismount and assemble, installation positioning is accurate, and it is strong to bear capacity, and light in weight.

Description

Technical Field

[0001] This utility model relates to reactor coolant pumps, and more particularly to a pump support device for a high-pressure cooler of a nuclear main pump. Background Technology

[0002] The reactor coolant pump (main nuclear pump) is a Class 1 nuclear safety device and the only active equipment in the primary loop of the nuclear island, often referred to as the "heart" of a nuclear power plant. A high-pressure cooler, weighing approximately 6 tons wet, is installed to cool the wet-wound motor. If the high-pressure cooler is fixed to a wall, the position of the main nuclear pump changes with the expansion / contraction of the loop during the temperature rise and fall of the main loop system. This results in significant stress at the pipe interface connecting the high-pressure cooler and the main nuclear pump, potentially leading to pipe leaks, equipment failure, and ultimately, in the most serious case, reactor coolant boundary rupture, triggering a nuclear accident. If the high-pressure cooler is installed on the main pump body, it can move with the pump, eliminating the problem of excessive stress.

[0003] However, the internal space of a nuclear power plant pump house is limited. The high-pressure cooler must be installed on the main pump body within this confined space, and the high-pressure cooler and its supporting device must be installed on-site, making it difficult to find suitable support devices. Furthermore, the main nuclear pump and high-pressure cooler have already been designed and manufactured. If the high-pressure cooler is installed on the main nuclear pump, interface modifications are required, leading to a reduction in the wall thickness of the pressure-bearing boundary and affecting its strength.

[0004] The statements herein provide only background information relating to this invention and do not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this utility model is to provide a pump support device for the high-pressure cooler of a nuclear main pump. It has a compact structure, is suitable for installation in the confined space of a nuclear main pump room, is easy to assemble and disassemble, has accurate installation positioning, strong load-bearing capacity, and is lightweight.

[0006] To achieve the above objectives, this utility model provides a pump support device for a nuclear main pump high-pressure cooler, comprising: The first support assembly is used to connect the upper cylinder of the high-pressure cooler; The second support assembly is used to connect the lower cylinder of the high-pressure cooler; The third support assembly is used to connect the motor housing of the nuclear main pump, and the third support assembly is used to connect the first support assembly; A fourth support assembly is used to connect the motor housing of the nuclear main pump, and the fourth support assembly is used to connect the second support assembly and the third support assembly.

[0007] The first support component includes: a first connecting arc surface and a first connecting plate that are interconnected; The first connecting arc surface is vertically arranged and is used for welding connection with the outer wall of the high-pressure cooler. The diameter of the first connecting arc surface is equal to the outer diameter of the shell of the high-pressure cooler. The first connecting plate is horizontally positioned and has multiple first connecting holes for connecting the third support component.

[0008] The first connecting plate is provided with a positioning stop, which is stepped and located on the side facing the third support component. The first support component further includes reinforcing ribs, which are respectively connected to the first connecting arc surface and the first connecting plate.

[0009] The second support component includes: a second connecting arc surface and a second connecting plate that are interconnected; The second connecting arc surface is vertically arranged and is used for welding connection with the outer wall of the high-pressure cooler. The diameter of the second connecting arc surface is equal to the outer diameter of the shell of the high-pressure cooler. The second connecting plate is vertically arranged and has multiple second connecting holes for connecting the fourth support component.

[0010] The third support component includes a third connecting plate and a fourth connecting plate arranged parallel to each other, the third connecting plate and the fourth connecting plate being fixedly connected by at least two stiffeners; The third connecting plate is horizontally arranged, and the third connecting plate is provided with a plurality of third connecting holes for connecting to the first connecting plate in the first support assembly; The fourth connecting plate is horizontally arranged, and a plurality of finger-like structures are provided on the side of the fourth connecting plate near the nuclear main pump. Each finger-like structure is provided with a fourth connecting hole for connecting the nuclear main pump. The fourth connecting plate is provided with a plurality of fifth connecting holes on the side away from the nuclear main pump for connecting the fourth support assembly.

[0011] The fourth support component includes: a fifth connecting plate and a sixth connecting plate that are interconnected; The fifth connecting plate is horizontally arranged, and a plurality of sixth connecting holes are provided on the fifth connecting plate for connecting to the fourth connecting plate in the third support assembly; The sixth connecting plate is vertically arranged, and a plurality of seventh connecting holes are provided at the end of the sixth connecting plate near the fifth connecting plate for connecting the nuclear main pump. A plurality of eighth connecting holes are provided at the end of the sixth connecting plate away from the fifth connecting plate for connecting the second connecting plate in the second support assembly.

[0012] The sixth connecting plate has reinforcing ribs.

[0013] The first and second support components are made of austenitic stainless steel, while the third and fourth support components are made of high-strength low-alloy steel.

[0014] The first super nut and the first stud threaded connection are used to achieve a fixed connection between the third support assembly and the motor housing of the nuclear main pump; A second super nut and a second stud threaded connection are used to achieve a fixed connection between the first support assembly and the third support assembly.

[0015] This utility model has the following beneficial effects: This invention takes into account the limited space within the main nuclear pump room and designs a compact, small-sized, yet high-load-bearing pump support device to install the high-pressure cooler onto the main nuclear pump. The pump support device as a whole underwent mechanical calculations. The first and second support components are made of austenitic stainless steel, while the third and fourth support components are made of high-strength low-alloy steel. The rational use of geometry and materials ensures both load-bearing capacity and minimizes weight.

[0016] This invention uses super nuts to fasten various support components. Super nuts apply more precise torque than ordinary nuts, are easy to install and remove, and require less operating space during fastening.

[0017] This utility model centralizes all the installation and connection interfaces between the pump support device and the main nuclear pump body on a single part (i.e., the large flange of the motor housing), without slotting / holeing in the middle of the motor housing where the wall thickness is small, thus avoiding weakening the strength of the pressure-bearing boundary and avoiding the influence of the assembly precision of the main nuclear pump.

[0018] The pump support device and the high-pressure cooler in this utility model are connected by welding. The installation interface with the nuclear main pump side is processed after welding, which can avoid interference problems when connecting with the nuclear main pump side and improve positioning accuracy. Attached Figure Description

[0019] Figure 1 and Figure 2 This utility model provides a schematic diagram of the structure of a pump support device for a high-pressure cooler of a nuclear main pump.

[0020] Figure 3 This is a structural schematic diagram of the first support component.

[0021] Figure 4 This is a structural schematic diagram of the second support component.

[0022] Figure 5 This is a structural schematic diagram of the third support component.

[0023] Figure 6 This is a structural diagram of the fourth support component.

[0024] Figure 7 This is a schematic diagram of the first and second support components being installed on the high-pressure cooler.

[0025] Figure 8 This is a schematic diagram of the third and fourth support components being installed on the nuclear main pump.

[0026] Figure 9 This is a schematic diagram of installing the high-pressure cooler onto the nuclear main pump using a pump mounting device. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of the present invention. Please refer to the drawings to make the objectives, features, and advantages of the present invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives achieved by the present invention, should still fall within the scope of the technical content disclosed in the present invention.

[0028] like Figure 1 and Figure 2 As shown, this utility model provides a pump support device for a high-pressure cooler of a nuclear main pump, comprising: a first support component 1 and a second support component 10 for fixing and connecting the high-pressure cooler A, and a third support component 4 and a fourth support component 7 for fixing and connecting the nuclear main pump B.

[0029] like Figure 2 and Figure 3 As shown, the first support assembly 1 is used to fix the upper cylinder of the high-pressure cooler A. The first support assembly 1 includes a first connecting arc surface 11 and a first connecting plate 12 that are connected to each other.

[0030] The first connecting arc surface 11 is vertically arranged and is used for welding connection with the outer wall of the high-pressure cooler A. The diameter of the first connecting arc surface 11 is equal to the outer diameter of the shell of the high-pressure cooler A, so that the first connecting arc surface 11 can fit tightly with the outer surface of the shell of the high-pressure cooler A, which is beneficial to the subsequent welding operation.

[0031] The first connecting plate 12 is horizontally positioned for connecting the third support component 4. A positioning stop 13 is provided on the first connecting plate 12. The positioning stop 13 is stepped and located on the side facing the third support component 4. The positioning stop 13 is used to lock the third support component 4, preventing it from sliding forward further, thus achieving rapid assembly and positioning of the third support component 4 and improving assembly efficiency. The first connecting plate 12 is provided with multiple first connecting holes 14 for connecting and fastening with the third support component 4.

[0032] Furthermore, the first support component 1 also includes a reinforcing rib 15, which is connected to the first connecting arc surface 11 and the first connecting plate 12 respectively, and is used to enhance the overall strength of the first support component 1.

[0033] like Figure 2 and Figure 4 As shown, the second support assembly 10 is used to fix the lower cylinder of the high-pressure cooler A. The second support assembly 10 includes: a second connecting arc surface 101 and a second connecting plate 102 that are connected to each other.

[0034] The second connecting arc surface 101 is vertically arranged and used for welding connection with the outer wall of the high-pressure cooler A. The diameter of the second connecting arc surface 101 is equal to the outer diameter of the shell of the high-pressure cooler A, so that the second connecting arc surface 101 can fit tightly with the outer surface of the shell of the high-pressure cooler A, which is beneficial to the subsequent welding operation.

[0035] The second connecting plate 102 is vertically arranged and is used to connect to the fourth support component 7. The second connecting plate 102 is provided with a plurality of second connecting holes 103 for connecting and fastening with the fourth support component 7.

[0036] Because the high-pressure cooler A has a thin-walled cylindrical structure, it is more convenient to connect the high-pressure cooler A to the first support assembly 1 and the second support assembly 10 by welding. In this embodiment, the first support assembly 1 and the second support assembly 10 are made of austenitic stainless steel, which facilitates welding with the high-pressure cooler A.

[0037] like Figure 2 and Figure 5 As shown, the third support component 4 includes a third connecting plate 41 and a fourth connecting plate 42 arranged parallel to each other, and the third connecting plate 41 and the fourth connecting plate 42 are fixedly connected by at least two stiffeners 43.

[0038] The third connecting plate 41 is horizontally arranged and is used to connect to the first connecting plate 12 in the first support assembly 1. The third connecting plate 41 is provided with a plurality of third connecting holes 44 for connecting and fastening with the first connecting plate 12. The number of the third connecting holes 44 is the same as the number of the first connecting holes 14, and the position and size of the third connecting holes 44 match the position and size of the first connecting holes 14.

[0039] The fourth connecting plate 42 is horizontally positioned and used to connect the nuclear main pump B and the fourth support assembly 7. Multiple finger-like structures 45 are provided on the side of the fourth connecting plate 42 closest to the nuclear main pump B. Each finger-like structure 45 has a fourth connecting hole 46 for connecting and securing to the nuclear main pump B. Using the finger-like structures 45 as the connection points with the nuclear main pump B reduces the size and weight of the fourth connecting plate 42. Multiple fifth connecting holes 47 are provided on the side of the fourth connecting plate 42 furthest from the nuclear main pump B for connecting and securing to the fourth support assembly 7.

[0040] like Figure 2 and Figure 6 As shown, the fourth support component 7 includes a fifth connecting plate 71 and a sixth connecting plate 72 that are interconnected.

[0041] The fifth connecting plate 71 is horizontally positioned and is used to connect to the fourth connecting plate 42 in the third support assembly 4. The fifth connecting plate 71 has multiple sixth connecting holes 73 for connecting and securing to the fourth connecting plate 42. The number of the sixth connecting holes 73 is the same as the number of the fifth connecting holes 47, and the position and size of the sixth connecting holes 73 match the position and size of the fifth connecting holes 47.

[0042] The sixth connecting plate 72 is vertically arranged and is used to connect the nuclear main pump B and the second connecting plate 102 in the second support assembly 10. Multiple seventh connecting holes 74 are provided at the end of the sixth connecting plate 72 near the fifth connecting plate 71 for connection and fastening with the nuclear main pump B. Multiple eighth connecting holes 75 are provided at the end of the sixth connecting plate 72 away from the fifth connecting plate 71 for connection and fastening with the second connecting plate 102. The number of eighth connecting holes 75 is the same as the number of second connecting holes 103, and the position and size of the eighth connecting holes 75 match the position and size of the second connecting holes 103. The sixth connecting plate 72 has reinforcing ribs 76 to enhance its structural strength.

[0043] In this embodiment, the third support component 4 and the fourth support component 7 are made of high-strength low-alloy steel, which ensures load-bearing capacity while minimizing weight. The third support component 4 is manufactured using a forging process, and the fourth support component 7 is manufactured using a rolling process, improving the overall material utilization rate and facilitating separate installation within the chamber of the nuclear main pump B.

[0044] This utility model also provides a method for installing a high-pressure cooler for a nuclear main pump using a pump mounting support device, comprising the following steps: Step S1, as follows Figure 7 As shown, the first support assembly 1 and the second support assembly 10 are installed on the high-pressure cooler A to assemble a high-pressure cooler assembly.

[0045] Step S1.1: Weld the first connecting arc surface 11 of the first support component 1 to the upper cylinder of the high-pressure cooler A, and weld the second connecting arc surface 101 of the second support component 10 to the lower cylinder of the high-pressure cooler A.

[0046] Step S1.2: Machining the positioning stop 13 and the first connecting hole 14 on the first connecting plate 12 of the first support component 1, and machining the second connecting hole 103 on the second connecting plate 102 of the second support component 10.

[0047] In this embodiment, there are 3 first connecting holes 14 and 8 second connecting holes 103.

[0048] After welding the main bodies of the first support component 1 and the second support component 10 to the high-pressure cooler A, the connection holes of the first support component 1 and the second support component 10 with the third support component 4 and the fourth support component 7 are then machined. This can avoid interference problems when the first support component 1 and the second support component 10 are connected with the third support component 4 and the fourth support component 7, thereby improving the accuracy of connection positioning.

[0049] Step S2, as follows Figure 8 As shown, the third support assembly 4 and the fourth support assembly 7 are installed onto the large flange C of the motor housing of the nuclear main pump B to assemble the nuclear main pump assembly.

[0050] Step S2.1, as follows Figure 1 , Figure 2 and Figure 8As shown, the first positioning pin 5 on the third support assembly 4 is installed (the first positioning pin 5 is inserted into the positioning hole on the motor housing flange C (not shown in the figure) and the positioning hole on the third support assembly 4 (not shown in the figure) respectively). The first stud 6 is passed through the threaded hole on the motor housing flange C (not shown in the figure) and the fourth connecting hole 46 (a smooth hole) on the third support assembly 4. The first super nut 31 is threadedly fastened to the first stud 6, thereby fixing the third support assembly 4 to the motor housing flange C of the nuclear main pump B.

[0051] Step S2.2, as follows Figure 1 , Figure 2 and Figure 8 As shown, the second locating pin 51 on the fourth support assembly 7 is installed (the second locating pin 51 is inserted into the locating holes on the motor housing flange C (not shown in the figure) and the fourth support assembly 7 (not shown in the figure) respectively). A first hexagonal head bolt 8 is passed through the bolt hole on the motor housing flange C (not shown in the figure) and the seventh connecting hole 74 (a threaded hole) on the fourth support assembly 7, thereby fixing the fourth support assembly 7 to the motor housing flange C of the nuclear main pump B. A first gasket (not shown in the figure) is used on the contact surface between the first hexagonal head bolt 8 and the fourth support assembly 7 to fill gaps and unevenness in the connection surface. This ensures a reliable and durable threaded connection by distributing pressure, preventing loosening, or forming a seal.

[0052] Step S2.3, as follows Figure 1 , Figure 2 and Figure 8 As shown, a second hexagonal head bolt 81 passes through the fifth connecting hole 47 (a threaded hole) on the third support assembly 4 and the sixth connecting hole 73 (a threaded hole) on the fourth support assembly 7, thereby fixing the third support assembly 4 and the fourth support assembly 7 together. A second washer (not shown in the figure) is used on the contact surface between the second hexagonal head bolt 81 and the fourth support assembly 7.

[0053] Step S3, as follows Figure 9 As shown, the assembled high-pressure cooler assembly is installed onto the assembled nuclear main pump assembly.

[0054] Step S3.1, as follows Figure 1 , Figure 2 and Figure 9 As shown, the high-pressure cooler assembly is lifted to the appropriate height using installation lifting tools and then moved horizontally to the installation position corresponding to the nuclear main pump assembly.

[0055] Step S3.2, as follows Figure 1 , Figure 2 and Figure 9As shown, the second stud 2 is passed through the first connecting hole 14 (a smooth hole) on the first support component 1 and the third connecting hole 44 (a threaded hole) on the third support component 4 in sequence, and the second super nut 3 is used to fasten the second stud 2 to the first support component 1 and the third support component 4 together.

[0056] Step S3.3, as follows Figure 1 , Figure 2 and Figure 9 As shown, a third hexagonal head bolt 82 is used to fasten the second support assembly 10 and the fourth support assembly 7 together by passing through the second connecting hole 103 (a threaded hole) on the second support assembly 10 and the eighth connecting hole 75 (a threaded hole) on the fourth support assembly 7 in sequence. A third washer (not shown in the figure) is used on the contact surface between the third hexagonal head bolt 82 and the fourth support assembly 7.

[0057] This invention takes into account the limited space within the main nuclear pump room and designs a compact, small-sized, and high-load-bearing pump support device to install the high-pressure cooler onto the main nuclear pump. The pump support device as a whole underwent mechanical calculations. The first support component 1 and the second support component 10 are made of austenitic stainless steel, while the third support component 4 and the fourth support component 7 are made of high-strength low-alloy steel. The rational use of geometric structure and materials ensures load-bearing capacity while minimizing weight.

[0058] This invention uses super nuts to fasten various support components. Super nuts apply more precise torque than ordinary nuts, are easy to install and remove, and require less operating space during fastening.

[0059] This utility model centralizes all the installation and connection interfaces between the pump support device and the main nuclear pump body on a single part (i.e., the large flange of the motor housing), without slotting / holeing in the middle of the motor housing where the wall thickness is small, thus avoiding weakening the strength of the pressure-bearing boundary and avoiding the influence of the assembly precision of the main nuclear pump.

[0060] The pump support device and the high-pressure cooler in this utility model are connected by welding. The installation interface with the nuclear main pump side is processed after welding, which can avoid interference problems when connecting with the nuclear main pump side and improve positioning accuracy.

[0061] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] In the description of this utility model, it should be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0063] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A pump support device for a high-pressure cooler of a nuclear main pump, characterized in that, Include: The first support assembly is used to connect the upper cylinder of the high-pressure cooler; The second support assembly is used to connect the lower cylinder of the high-pressure cooler; The third support assembly is used to connect the motor housing of the nuclear main pump, and the third support assembly is used to connect the first support assembly; A fourth support assembly is used to connect the motor housing of the nuclear main pump, and the fourth support assembly is used to connect the second support assembly and the third support assembly.

2. The pump support device for the high-pressure cooler of the nuclear main pump as described in claim 1, characterized in that, The first support component includes: a first connecting arc surface and a first connecting plate that are interconnected; The first connecting arc surface is vertically arranged and is used for welding connection with the outer wall of the high-pressure cooler. The diameter of the first connecting arc surface is equal to the outer diameter of the shell of the high-pressure cooler. The first connecting plate is horizontally positioned and has multiple first connecting holes for connecting the third support component.

3. The pump support device for the high-pressure cooler of the nuclear main pump as described in claim 2, characterized in that, The first connecting plate is provided with a positioning stop, which is stepped and located on the side facing the third support component.

4. The pump support device for the high-pressure cooler of the nuclear main pump as described in claim 2, characterized in that, The first support component further includes reinforcing ribs, which are respectively connected to the first connecting arc surface and the first connecting plate.

5. The pump support device for the high-pressure cooler of the nuclear main pump as described in claim 1, characterized in that, The second support component includes: a second connecting arc surface and a second connecting plate that are interconnected; The second connecting arc surface is vertically arranged and is used for welding connection with the outer wall of the high-pressure cooler. The diameter of the second connecting arc surface is equal to the outer diameter of the shell of the high-pressure cooler. The second connecting plate is vertically arranged and has multiple second connecting holes for connecting the fourth support component.

6. The pump support device for the high-pressure cooler of the nuclear main pump as described in claim 2 or 3, characterized in that, The third support component includes a third connecting plate and a fourth connecting plate arranged parallel to each other, the third connecting plate and the fourth connecting plate being fixedly connected by at least two stiffeners; The third connecting plate is horizontally arranged, and the third connecting plate is provided with a plurality of third connecting holes for connecting to the first connecting plate in the first support assembly; The fourth connecting plate is horizontally arranged, and a plurality of finger-like structures are provided on the side of the fourth connecting plate near the nuclear main pump. Each finger-like structure is provided with a fourth connecting hole for connecting the nuclear main pump. The fourth connecting plate is provided with a plurality of fifth connecting holes on the side away from the nuclear main pump for connecting the fourth support assembly.

7. The pump support device for the high-pressure cooler of the nuclear main pump as described in claim 6, characterized in that, The fourth support component includes: a fifth connecting plate and a sixth connecting plate that are interconnected; The fifth connecting plate is horizontally arranged, and a plurality of sixth connecting holes are provided on the fifth connecting plate for connecting to the fourth connecting plate in the third support assembly; The sixth connecting plate is vertically arranged, and a plurality of seventh connecting holes are provided at the end of the sixth connecting plate near the fifth connecting plate for connecting the nuclear main pump. A plurality of eighth connecting holes are provided at the end of the sixth connecting plate away from the fifth connecting plate for connecting the second connecting plate in the second support assembly.

8. The pump support device for the high-pressure cooler of the nuclear main pump as described in claim 7, characterized in that, The sixth connecting plate has reinforcing ribs.

9. The pump support device for the high-pressure cooler of the nuclear main pump as described in claim 1, characterized in that, The first and second support components are made of austenitic stainless steel, while the third and fourth support components are made of high-strength low-alloy steel.

10. The pump support device for the high-pressure cooler of the nuclear main pump as described in claim 1, characterized in that, The first super nut and the first stud threaded connection are used to achieve a fixed connection between the third support assembly and the motor housing of the nuclear main pump; A second super nut and a second stud threaded connection are used to achieve a fixed connection between the first support assembly and the third support assembly.

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