Auxiliary installation device and method for cooler coil assembly

Abstract

The present invention provides an auxiliary installation device and method for a cooler coil assembly. The auxiliary installation device includes a lifting unit and a detection unit; the lifting unit includes: a protective frame, which is a columnar frame structure extending longitudinally, accommodating the cooler coil assembly therein, and fixed to the upper flange and lower flange of the cooler coil assembly respectively, for protecting the cooler coil assembly from deformation during lifting. The detection unit is used to detect whether the outer diameter of the coil body of the cooler coil assembly meets the standard before installation. The present invention can prevent the cooler coil assembly from being deformed during transportation, and at the same time, quickly and effectively detect the external dimensions of the cooler coil assembly before installation, and promptly discover the deformation position for correction before installation, ensuring that there is an appropriate gap between it and the inner wall of the cooler shell after installation, and has good practicality, economy and convenience.

Description

Technical Field

[0001] The present invention relates to the field of nuclear power mechanical equipment, and in particular to an auxiliary installation device and method for a cooler coil assembly for a nuclear power pump. Background Art

[0002] Shell-and-tube coolers are widely used in nuclear power pumps of various safety levels. They consist of a cooler housing and the cooler coil assembly within. Due to the large number of turns, the bending and welding process, stress relief, the flexible design, and handling, the cooler coil assembly is prone to deformation. This deformation can contact or damage the inner wall of the cooler housing. This contact is detrimental to the long-term safe operation of the cooler, and severe deformation can even prevent the cooler from being installed in the cooler housing.

[0003] Furthermore, when the cooler coil assembly is installed in the cooler housing, the gap between the two is neither visible nor measurable. Therefore, it is essential to inspect the cooler coil assembly's dimensions before installation to control the gap between it and the cooler housing. However, no prior art discloses such a cooler coil assembly inspection and lifting device or method. Summary of the Invention

[0004] The object of the present invention is to provide an auxiliary installation device and method for a cooler coil assembly, which can prevent the cooler coil assembly from being deformed during transportation, and at the same time quickly and effectively detect the external dimensions of the cooler coil assembly before installation, timely discover the deformation position so as to make corrections before installation, and ensure that there is an appropriate gap between it and the inner wall of the cooler shell after installation, with good practicality, economy and convenience.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] An auxiliary installation device for a cooler coil assembly, the cooler coil assembly comprising a lower flange, a coil body, and an upper flange plate connected in sequence from bottom to top; wherein the lower flange comprises a lower flange plate located at the bottom; the auxiliary installation device comprises a lifting unit;

[0007] The lifting unit comprises:

[0008] The protective frame is a columnar frame structure extending longitudinally, which accommodates the cooler coil assembly inside and is fixed to the upper flange and lower flange of the cooler coil assembly respectively, so as to protect the cooler coil assembly from deformation during lifting.

[0009] Preferably, the protective frame includes:

[0010] Base plate, fixed to the lower flange of the cooler coil assembly;

[0011] A top plate assembly is arranged above the bottom plate and parallel to the bottom plate and is fixed to the upper flange of the cooler coil assembly;

[0012] A plurality of guide columns are vertically arranged between the bottom plate and the top plate assembly, and two ends of each guide column are respectively fixed to the bottom plate and the top plate assembly.

[0013] Preferably, the auxiliary installation device further comprises a detection unit connected to the protective frame, for detecting whether the outer diameter of the coil body of the cooler coil assembly meets the standard before installation.

[0014] Preferably, the detection unit comprises a measuring ring; the measuring ring comprises:

[0015] The inner diameter of the annular measuring ring is the maximum allowable outer diameter of the coil body. It is used to determine whether the outer diameter meets the standard by being coaxially sleeved on the outside of the coil body.

[0016] The coaxial limiting part is respectively connected to the guide columns of the measuring ring body and the protective frame, and can make the measuring ring body coaxially sleeved on the outside of the coil body and move vertically up and down after installation.

[0017] Preferably, the coaxial limiting portion includes:

[0018] At least two clamps arranged opposite to each other are rigidly connected to the measuring ring body through connecting rods. The clamps are respectively sleeved on the outside of two diagonally distributed guide columns of the protective frame and can move up and down outside the guide columns.

[0019] Preferably, the detection unit further comprises a measuring ring fixing assembly connected to the measuring ring and the protective frame respectively, for fixing the measuring ring and the protective frame.

[0020] Preferably, the top plate assembly includes an upper cover plate and a connecting plate located above it; wherein, the upper cover plate is fixed to the top end of each guide column, and the upper cover plate is provided with a through hole through which the upper flange plate can pass but the connecting plate cannot pass, the upper flange plate is fixed to the bottom surface of the connecting plate through the through hole, and the connecting plate is fixed to the upper cover plate.

[0021] Preferably, the lifting unit further comprises a plurality of lifting ring ears evenly arranged on the top of the protective frame for connecting with the lifting hook during lifting.

[0022] An auxiliary installation method for a cooler coil assembly, implemented based on any one of the above auxiliary installation devices, comprises the following steps:

[0023] S1. Assembling the cooler coil assembly and the cooler coil assembly auxiliary installation device to form a combination; comprising the steps of:

[0024] S11. Place the cooler coil assembly on the base plate and secure the lower flange to the base plate.

[0025] S12, fixing the bottom end of each guide column to the bottom plate respectively;

[0026] S14, fixing the upper cover plate to the top of each guide column respectively;

[0027] S15. Pass the upper flange of the cooler coil assembly through the through hole of the upper cover plate and fix it to the bottom surface of the connecting plate, and then fix the connecting plate to the upper cover plate;

[0028] S16, fixing each eyelet to the top surface of the upper cover plate to complete the assembly to form a combined body;

[0029] S3. Lift the assembly to the installation location, remove the auxiliary installation device of the cooler coil assembly according to the reverse steps of step S1, and install the cooler coil assembly into the cooler shell.

[0030] Preferably, between steps S12 and S14, step S13 is further included: installing the detection unit so that the measuring ring is coaxially sleeved on the outside of the coil body, and fixing the measuring ring by a measuring ring fixing assembly;

[0031] Between steps S1 and S3, step S2 is also included: measuring and correcting the outer diameter of the coil body by the detection unit of the assembly; which includes the steps of:

[0032] S21, removing each locking pin to release the detection unit;

[0033] S22. Move the detection unit up and down along the outside of the coil body. If there is no interference between the measuring ring body and the outside of the coil body, the outer diameter of the coil body meets the standard. If interference occurs, the interference position is located and it is determined that the interference position does not meet the standard, and corrective measures are taken for the interference position.

[0034] S23, repeat step S22 until the outer diameter of the coil body meets the standard;

[0035] S24. Fix the measuring ring using the measuring ring fixing assembly.

[0036] In summary, compared with the prior art, the auxiliary installation device and method for a cooler coil assembly provided by the present invention has the following beneficial effects:

[0037] 1. The design of the lifting unit allows the cooler coil assembly to be accommodated in a protective frame to prevent deformation during the lifting process;

[0038] 2. The split-structure top plate assembly design makes positioning and operation easy during installation;

[0039] 3. Through the design of the detection unit, the state of the cooler coil assembly installed in the cooler shell can be simulated, and the external dimensions of the cooler coil assembly can be quickly and effectively detected before installation. The deformation position can be found in time for correction before installation to ensure that there is an appropriate gap between it and the inner wall of the cooler shell after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic structural diagram of a cooler coil assembly in the prior art;

[0041] Figure 2 It is a schematic structural diagram of the combination of the present invention;

[0042] Figure 3 for Figure 2 sectional view of

[0043] Figure 4 It is a structural schematic diagram of the bottom plate of the present invention;

[0044] Figure 5 It is a structural schematic diagram of the upper cover plate of the present invention;

[0045] Figure 6 It is a structural schematic diagram of the connection disk of the present invention;

[0046] Figure 7 for Figure 6 sectional view of

[0047] Figure 8 It is a structural schematic diagram of the guide column of the present invention;

[0048] Figure 9 Schematic diagram of the structure of the detection unit of the present invention. DETAILED DESCRIPTION

[0049] The following is a further detailed description of the auxiliary installation device and method of the cooler coil assembly proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. They are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0050] It should be noted that, in the present invention, relational terms such as and are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus comprising a series of elements includes not only the elements explicitly listed, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Attachment Figure 1 The cooler coil assembly of the prior art is shown, which includes a lower flange, a coil body B and an upper flange C connected in sequence from bottom to top; wherein, the lower flange includes a lower flange A1 and a column A2 extending upward from the top thereof; the coil body B is one or more coils, which are coiled in multiple layers outside the column A2 and extend spirally along the longitudinal direction of the column A2, and the upper and lower ends of each coil are respectively connected to the upper flange C and the lower flange A1; the upper flange C is only connected to the coil body B and not to the column A2. Therefore, the flexibility of the entire cooler coil assembly is very large, the upper and lower flanges are difficult to position, and the coil is easy to deform. After the cooler coil assembly is produced, it needs to be hoisted and installed in the cooler shell. The present invention is committed to solving two technical problems: one is to detect whether the outer diameter of the coil body B meets the design requirements before installation; the other is to protect the coil body B from deformation during the hoisting process. Specifically,

[0052] Combined with attachment Figures 2 to 9 The present invention provides a cooler coil assembly auxiliary installation device for the cooler coil assembly, which is used for lifting protection and appearance detection of the cooler coil assembly, and includes a lifting unit and a detection unit.

[0053] As attached Figure 2 、 3 As shown, the lifting unit includes a protective frame and a plurality of lifting lugs 10 evenly arranged on the top of the protective frame.

[0054] The protection frame is a columnar frame structure extending in the longitudinal direction, which accommodates the cooler coil assembly and is fixed to the upper flange C and the lower flange A1 of the cooler coil assembly respectively, so as to protect the cooler coil assembly from deformation during lifting. In some embodiments, the protection frame includes: a bottom plate 1 (attached Figure 4 ), fixed with the lower flange A1 of the cooler coil assembly; a top plate assembly arranged parallel to the bottom plate 1, the top plate assembly is fixed with the upper flange C of the cooler coil assembly; a plurality of guide columns 3 (attached) arranged vertically between the bottom plate 1 and the top plate assembly Figure 8 ), the two end portions 301 and 302 of each guide column 3 are fixed to the base plate 1 and the top plate assembly respectively.

[0055] Furthermore, if the top plate assembly adopts an integrated design, since the top plate assembly is connected to the top of each guide column 3 and the upper flange C of the cooler coil assembly at the same time, there will be problems such as difficulty in positioning and difficulty in operation during installation. Preferably, in some embodiments, the top plate assembly is a split structure, which includes an upper cover plate 2 (attached Figure 5 ) and the connecting plate 4 (attached) located above it Figure 6 、 7 ), wherein the upper cover plate 2 is fixed to the top end of each guide column 3, and the upper cover plate 2 is provided with a through hole 201 through which the upper flange C can pass but the connecting plate 4 cannot pass, the upper flange C passes through the through hole 201 and is fixed to the bottom surface of the connecting plate 4, and the connecting plate 4 is fixed to the upper cover plate 2. This split design allows the upper cover plate 2 to be fixed to the top end of each guide column 3 first, and then the upper flange C is passed through the through hole 201 and fixed to the bottom surface of the connecting plate 4, and finally the connecting plate 4 is fixed to the upper cover plate 2, which makes positioning and operation convenient during installation.

[0056] Further, preferably, in some embodiments, the protective frame is a square cylinder that is compatible with the cooler coil assembly, that is, its upper cover plate 2 and bottom plate 1 are square plates that are compatible with the lower flange A1 (usually the upper flange C and the lower flange A1 are circular flanges, and the lower flange A1 has an outer diameter larger than the upper flange C and the coil body B to maintain stability and prevent tipping). The two are connected by four guide columns 3 set at the four corners. The use of a square cylinder protective frame can save space. Further, preferably, in some embodiments, the through hole 201 is a circular hole with a diameter slightly larger than the outer diameter of the upper flange C, and the connecting plate 4 is a circular plate with an outer diameter slightly larger than the diameter of the through hole 201. The circular design of the connecting plate 4 and the through hole 201 has the advantages of saving space, uniform force, and preventing the connecting plate 4 from sinking into the through hole 201 and causing deformation of the coil body B. Preferably, in some embodiments, as shown in the attached Figure 4 As shown, the top surface of the base plate 1 is provided with a positioning groove 101 adapted to the lower flange A1 of the cooler coil assembly, which is used to limit the lower flange A1 during installation to facilitate installation.

[0057] Furthermore, in some embodiments, the fixing between the protection frame and the cooler coil assembly and between the components of the protection frame are all detachable connections, such as bolt connections, positioning pins, etc., which can facilitate installation and disassembly. Figures 2 to 7As shown, in this embodiment, the base plate 1, the upper cover plate 2 and the guide columns 3 are fixed together by multiple screw holes 103 at the four corners of the base plate 1, the multiple screw holes 204 at the four corners of the upper cover plate 2 and the multiple adapting screw holes and bolts on the two ends 301 and 302 of each guide column 3; the lower flange A1 and the base plate 1 are fixed together by multiple screw holes 102 inside the positioning groove 101, the adapting screw holes and bolts 7 of the lower flange A1; the connecting plate 4 and the upper flange C are fixed together by multiple screw holes 401 in the central area of ​​the connecting plate 4, the adapting screw holes and bolts 8 of the upper flange C; the connection plate 4 and the upper cover plate 2 are limited by the cooperation of the positioning pin 9 with the positioning hole 403 of the connecting plate 4 and the positioning hole 202 of the upper cover plate 2, so that the upper flange C is in the correct circumferential position after the cooler coil assembly is installed, ensuring the coaxiality of the upper flange C and the lower flange A1.

[0058] Each lifting eye 10 is connected to the top surface of the protective frame and is used to connect to the hook during lifting; in the embodiment of the top plate assembly with a split structure, the lifting eye 10 is connected to the top surface of the upper cover plate 2, so that the lifting force is borne by the protective frame rather than the cooler coil assembly to avoid deformation of the coil body B; in this embodiment, there are 4 lifting eye 10, which are fixed to the top surface of the upper cover plate 2 by threaded cooperation with the 4 lifting eye threaded holes 203 on the upper cover plate 2.

[0059] Furthermore, the detection unit includes a measuring ring 5 and a measuring ring fixing assembly; wherein,

[0060] Measuring ring 5 as attached Figure 9 Shown, including:

[0061] The annular measuring ring body 502 has an inner diameter equal to the maximum allowable outer diameter of the coil body B. It is coaxially mounted on the outside of the coil body B to determine whether the outer diameter of the coil body B meets the standard (is smaller than the maximum allowable outer diameter).

[0062] The coaxial limiting portion is connected to the measuring ring body 502 and the protective frame, respectively, and is used to limit the measuring ring body 502 to be coaxially sleeved on the outside of the coil body B after installation, and to enable the measuring ring body 502 to move up and down axially on the outside of the coil body B, while always keeping the measuring ring body 502 coaxial with the coil body B during movement. During measurement, if the measuring ring body 502 can move up and down without interference on the outside of the coil body B, the outer diameter of the coil body B meets the standard; if interference occurs, the interference position is located to be non-compliant, and corrective measures can be taken for the interference position. In some embodiments, the coaxial limiting portion includes: two oppositely arranged clamps 501 and 503, each rigidly connected to the measuring ring body 502 via a connecting rod. The clamps 501 and 503 are respectively sleeved on the outside of two diagonally distributed guide posts 3 of the protective frame and can move up and down on the outside of the guide posts 3, while always keeping the measuring ring body 502 coaxially sleeved on the outside of the coil body B during movement.

[0063] The measuring ring fixing assembly is used to secure the measuring ring 5 to the protective frame during installation and lifting to prevent movement. In some embodiments, it includes positioning holes provided on the clamps 501 and 503, positioning holes 303 on the guide posts 3 to which the clamps 501 and 503 are connected, and a fixing member adapted to the positioning holes 303, such as a locking pin 6. The measuring ring 5 is secured by inserting two locking pins 6 into the positioning holes on the two clamps 501 and 503 and the positioning holes 303 on the diagonal guide posts 3. Preferably, each guide post 3 is provided with multiple positioning holes 303 evenly distributed for ease of operation.

[0064] In addition, the present invention also provides an auxiliary installation method for a cooler coil assembly, comprising the steps of:

[0065] S1. Assembling a cooler coil assembly and the cooler coil assembly auxiliary installation device of the present invention to form a combination; comprising the steps of:

[0066] S11. Place the cooler coil assembly on the base plate 1 and fix the lower flange A1 to the base plate 1;

[0067] S12, fixing the bottom end of each guide column 3 to the base plate 1 respectively;

[0068] S13. Attach the clamps 501 and 503 of the detection unit to the outside of any two diagonally arranged guide posts 3, respectively, so that the measuring ring 5 is coaxially attached to the outside of the coil body B. Secure the measuring ring 5 by engaging the locking pin 6 with the positioning hole 303.

[0069] S14, fixing the upper cover plate 2 and the top ends of the guide posts 3 respectively;

[0070] S15. Pass the upper flange C of the cooler coil assembly through the through hole 201 of the upper cover plate 2 and fix it to the bottom surface of the connecting plate 4. Insert the positioning pin 9 into the positioning hole 403 of the connecting plate 4 to fix the connecting plate 4 to the upper cover plate 2.

[0071] S16. Fix each eyelet 10 on the top surface of the upper cover plate 2 to complete the assembly of the cooler coil assembly and the cooler coil assembly auxiliary mounting device to form a combined body.

[0072] S2. Measure and correct the outer diameter of the coil body B using the detection unit of the assembly; including the following steps:

[0073] S21, remove each locking pin 6 to release the detection unit;

[0074] S22. Move the detection unit up and down along the outside of the coil body B. If there is no interference between the measuring ring body 502 and the outside of the coil body B, the outer diameter of the coil body B meets the standard. If interference occurs, the interfering position is located and it is determined that the interfering position does not meet the standard, and corrective measures are taken for the interfering position.

[0075] S23, repeat step S22 until the outer diameter of the coil body B meets the standard;

[0076] S24 , fixing the detection unit by engaging the locking pin 6 with the positioning hole 303 .

[0077] S3 hoist the assembly and install the cooler coil assembly; including the following steps:

[0078] S31, connect the lifting equipment through the lifting lug 10, and lift the assembly to the installation location;

[0079] S32 , removing the auxiliary installation device of the cooler coil assembly according to the reverse steps of step S1 , and installing the cooler coil assembly into the cooler housing.

[0080] In summary, the auxiliary installation device and method of the cooler coil assembly provided by the present invention, through the design of the lifting unit, accommodates the cooler coil assembly in the protective frame to protect it from deformation during the lifting process; through the design of the split structure top plate assembly, positioning is convenient and operation is convenient during installation; through the design of the detection unit, the state of the cooler coil assembly installed in the cooler shell can be simulated, the external dimensions of the cooler coil assembly can be quickly and effectively detected before installation, and the deformation position can be discovered in time for correction before installation, ensuring that there is an appropriate gap between it and the inner wall of the cooler shell after installation.

[0081] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description is not intended to limit the present invention. After reading the above description, various modifications and substitutions of the present invention will become apparent to those skilled in the art. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An auxiliary installation device for a cooler coil assembly, the cooler coil assembly comprising a lower flange, a coil body, and an upper flange connected in sequence from bottom to top; wherein: The lower flange includes a lower flange plate located at the bottom; characterized in that the auxiliary installation device includes a lifting unit; The lifting unit comprises: The protective frame is a columnar frame structure extending in the longitudinal direction, accommodating the cooler coil assembly therein and being fixed to the upper flange and the lower flange of the cooler coil assembly respectively, so as to protect the cooler coil assembly from deformation during hoisting; The protective frame includes: Base plate, fixed to the lower flange of the cooler coil assembly; A top plate assembly is arranged above the bottom plate and parallel to the bottom plate and is fixed to the upper flange of the cooler coil assembly; A plurality of guide posts are vertically arranged between the bottom plate and the top plate assembly, and two ends of each guide post are fixed to the bottom plate and the top plate assembly respectively; The top plate assembly includes an upper cover plate and a connecting plate located above the upper cover plate; wherein the upper cover plate is fixed to the top end of each guide column, and the upper cover plate is provided with a through hole through which the upper flange plate can pass but the connecting plate cannot pass; the upper flange plate passes through the through hole and is fixed to the bottom surface of the connecting plate, and the connecting plate is fixed to the upper cover plate; The auxiliary installation device further includes a detection unit connected to the protective frame, for detecting whether the outer diameter of the coil body of the cooler coil assembly meets the standard before installation; The detection unit comprises a measuring ring: The measuring ring comprises: The inner diameter of the annular measuring ring is the maximum allowable outer diameter of the coil body. It is used to determine whether the outer diameter meets the standard by being coaxially sleeved on the outside of the coil body. The coaxial limiting part is connected to the guide column of the measuring ring body and the protective frame respectively, so that the measuring ring body can be coaxially sleeved on the outside of the coil body and move vertically up and down after installation; The coaxial limiting portion includes: At least two clamps arranged opposite to each other are rigidly connected to the measuring ring body through connecting rods. The clamps are respectively sleeved on the outside of two diagonally distributed guide columns of the protective frame and can move up and down outside the guide columns.

2. The auxiliary installation device according to claim 1, characterized in that: The detection unit further includes a measuring ring fixing assembly connected to the measuring ring and the protective frame respectively, and used for fixing the measuring ring and the protective frame.

3. The auxiliary installation device according to claim 1, characterized in that: The lifting unit also includes a plurality of lifting ring ears evenly arranged on the top of the protective frame, which are used to be connected with the hook during lifting.

4. An auxiliary installation method for a cooler coil assembly, implemented based on the auxiliary installation device according to any one of claims 1 to 3, characterized in that: Including steps: S1. Assemble the cooler coil assembly and the cooler coil assembly auxiliary installation device to form a combination; include step: S11. Place the cooler coil assembly on the base plate and secure the lower flange to the base plate. S12, fixing the bottom end of each guide column to the bottom plate respectively; S14, fixing the upper cover plate to the top of each guide column respectively; S15. Pass the upper flange of the cooler coil assembly through the through hole of the upper cover plate and fix it to the bottom surface of the connecting plate, and then fix the connecting plate to the upper cover plate; S16, fixing each eyelet to the top surface of the upper cover plate to complete the assembly to form a combined body; S3. Lift the assembly to the installation location, remove the auxiliary installation device of the cooler coil assembly according to the reverse steps of step S1, and install the cooler coil assembly into the cooler shell.

5. The auxiliary installation method according to claim 4, characterized in that: Between steps S12 and S14, the method further includes step S13: installing the detection unit so that the measuring ring is coaxially sleeved on the outside of the coil body, and fixing the measuring ring by a measuring ring fixing assembly; Between steps S1 and S3, there is also step S2: measuring and correcting the outer diameter of the coil body by the detection unit of the assembly; It includes the steps of: S21, removing each locking pin to release the detection unit; S22. Move the detection unit up and down along the outside of the coil body. If there is no interference between the measuring ring body and the outside of the coil body, the outer diameter of the coil body meets the standard. If interference occurs, the interference position is located and does not meet the standard. Corrective measures are taken for the interference position. S23, repeat step S22 until the outer diameter of the coil body meets the standard; S24. Fix the measuring ring using the measuring ring fixing assembly.

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