Lower horizontal supporting structure of nuclear power station steam generator

Abstract

The utility model discloses a lower horizontal supporting structure of a nuclear power station steam generator, and relates to the technical field of horizontal supporting structures. The device comprises a circular bottom plate, wherein a plurality of quick mounting mechanisms and fixing mechanisms are arranged on the circular bottom plate; the rapid installation mechanism comprises a first fixing assembly, a first rapid installation assembly and a second rapid installation assembly, the first fixing assembly comprises a U-shaped supporting plate fixedly installed on the outer wall of the circular bottom plate, an L-shaped supporting plate is fixedly installed at the top of the U-shaped supporting plate, and a ground nail penetrates through the top of the U-shaped supporting plate. By means of the rapid installation mechanism, the problems that more workers need to participate in adjustment or replacement of the supporting structure, the workload and the labor intensity of the workers are increased, the workers need to spend more time to complete maintenance tasks, the maintenance time is prolonged, and normal operation of nuclear power station equipment is affected are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of horizontal support structures, in particular to a lower horizontal support structure of a nuclear power plant steam generator. Background Art

[0002] In the related art, a horizontal support structure for the lower part of a steam generator in a nuclear power plant is disclosed with publication number CN106051722B, which includes a support device for limiting the instantaneous displacement of the steam generator, the support device includes a base and an axial clearance adjustment device arranged on the base, the base is in the shape of a stepped shaft, the outer diameter of the base gradually decreases from back to front to form a large end of the base and a secondary large end of the base, the front section of the large end of the base is a hollow structure, and the inner diameter of the front section of the large end of the base is larger than the outer diameter of the secondary large end of the base.

[0003] During the use of this device, more staff members are required to participate when adjusting or replacing the supporting structure, which increases the workload and labor intensity of the staff. The staff need to spend more time to complete the maintenance tasks, resulting in extended maintenance time and affecting the normal operation of nuclear power plant equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a lower horizontal support structure for a steam generator in a nuclear power plant. By setting a quick installation mechanism, the problem that more staff members need to participate when adjusting or replacing the support structure, which increases the workload and labor intensity of the staff members, and the staff members need to spend more time to complete maintenance tasks, resulting in extended maintenance time and affecting the normal operation of nuclear power plant equipment is solved.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model is a horizontal support structure for the lower part of a steam generator in a nuclear power plant, comprising a circular bottom plate, on which a plurality of quick installation mechanisms and fixing mechanisms are arranged;

[0007] The quick installation mechanism includes a fixing component 1, a quick installation component 1 and a quick installation component 2. The fixing component 1 includes a U-shaped support plate fixedly installed on the outer wall of the circular bottom plate, an L-shaped support plate fixedly installed on the top of the U-shaped support plate, a ground nail penetrates the top of the U-shaped support plate, the ground nail is slidably connected to the U-shaped support plate, and a sleeve is fixedly installed on the top of the L-shaped support plate.

[0008] Furthermore, the quick installation component 1 includes an output rod passing through the L-shaped support plate, the output rod is slidably connected to the L-shaped support plate, the top end of the output rod extends into the sleeve and is slidably connected to the sleeve, a piston is slidably installed on the inner wall of the sleeve, and the bottom end of the piston is fixedly connected to the output rod.

[0009] Furthermore, the second quick-install component includes a pull rod fixedly installed on the top of the piston, the top of the pull rod extends outside the sleeve and is slidably connected to the sleeve, a spring is wound on the pull rod, the top of the spring is fixedly connected to the sleeve, and the end of the spring is fixedly connected to the piston.

[0010] Furthermore, a plurality of slide grooves are provided on the top of the circular base plate, and a semicircular support plate is slidably installed in two corresponding slide grooves respectively. A plurality of bolts 1 are threadedly installed on the bottom end of the circular base plate, and the top ends of the plurality of bolts 1 extend into the plurality of slide grooves respectively.

[0011] Furthermore, the fixing mechanism includes a fixing component 2 and a fixing component 3, the fixing component 2 includes a steam generator body fixedly mounted on the top of two semicircular support plates, a semicircular fixing sleeve is provided on the outer wall of the steam generator body, a shock-absorbing gasket is fixedly mounted on the inner wall of the semicircular fixing sleeve, and the inner wall of the shock-absorbing gasket is in contact with the steam generator body.

[0012] Furthermore, the fixing component three is respectively fixedly mounted on a plurality of support rods on two semicircular support plates, the ends of the plurality of support rods are fixedly connected to the outer wall of the semicircular fixing sleeve, a thread groove is provided on the semicircular fixing sleeve, and a bolt two is threadedly mounted in the thread groove.

[0013] The utility model has the following beneficial effects:

[0014] 1. By setting up a quick installation mechanism, when the device needs to be installed, the ground nail can be placed on the U-shaped support plate, and then the pull rod on the sleeve is pulled, the pull rod drives the piston to move upward, thereby compressing the spring on the piston, driving the output rod to move upward, and then releasing the pull rod. At this time, the piston will drive the output rod to move downward under the action of the elastic potential energy of the spring, so that the ground nail passes through the U-shaped support plate and is fixed on the ground, so that the staff can adjust or replace the support structure more quickly, thereby improving maintenance efficiency, reducing maintenance time, shortening downtime, ensuring the normal operation of nuclear power plant equipment, reducing the labor intensity of the staff, reducing the difficulty of operation, making the task of adjusting or replacing the support structure simpler and faster, and reducing the workload of the staff;

[0015] 2. By setting a fixing mechanism, after the device is installed, the semicircular support plate slide groove is slid and installed on the circular bottom plate, and bolt one is screwed to fix the semicircular support plate on the circular bottom plate. Then the steam generator body is placed on the semicircular support plate, the semicircular fixing sleeve is put on the steam generator body, and then bolt two is screwed on the threaded groove to fix the steam generator body on the device, so that the lower horizontal support structure of the steam generator can be effectively supported, maintaining its stability and structural integrity, ensuring the safe operation of the equipment, ensuring the accurate position of the horizontal support structure, avoiding displacement or loosening during operation, and ensuring the normal operation of the equipment.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the lower horizontal support structure of a nuclear power plant steam generator according to the utility model;

[0019] Figure 2 This is a side sectional structural schematic diagram of a lower horizontal support structure of a nuclear power plant steam generator according to the utility model;

[0020] Figure 3 This is a partial structural schematic diagram of a lower horizontal support structure of a nuclear power plant steam generator according to the utility model;

[0021] Figure 4 The utility model is a horizontal support structure for the lower part of a steam generator in a nuclear power plant Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0022] Figure 5 The utility model is a horizontal support structure for the lower part of a steam generator in a nuclear power plant Figure 3 A schematic diagram of the enlarged structure of B;

[0023] Figure 6 The utility model is a horizontal support structure for the lower part of a steam generator in a nuclear power plant Figure 3 Schematic diagram of the enlarged structure of C in the figure.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Circular bottom plate; 101. U-shaped support plate; 2. L-shaped support plate; 3. Ground nail; 4. Sleeve; 5. Output rod; 6. Piston; 7. Pull rod; 8. Spring; 9. Slide groove; 10. Semicircular support plate; 11. Bolt 1; 12. Steam generator body; 13. Semicircular fixing sleeve; 14. Shock-absorbing gasket; 15. Support rod; 16. Threaded groove; 17. Bolt 2. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 As shown, the utility model is a horizontal support structure for the lower part of a steam generator of a nuclear power plant, comprising a circular bottom plate 1, on which a plurality of quick installation mechanisms and fixing mechanisms are arranged;

[0028] The quick installation mechanism includes a fixed component 1, a quick installation component 1 and a quick installation component 2. The fixed component 1 includes a U-shaped support plate 101 fixedly installed on the outer wall of the circular base plate 1, an L-shaped support plate 2 is fixedly installed on the top of the U-shaped support plate 101, a ground nail 3 penetrates the top of the U-shaped support plate 101, the ground nail 3 is slidably connected to the U-shaped support plate 101, and a sleeve 4 is fixedly installed on the top of the L-shaped support plate 2.

[0029] Among them Figure 4 As shown, the quick installation component 1 includes an output rod 5 passing through the L-shaped support plate 2, the output rod 5 is slidably connected to the L-shaped support plate 2, the top end of the output rod 5 extends into the sleeve 4 and is slidably connected to the sleeve 4, a piston 6 is slidably installed on the inner wall of the sleeve 4, and the bottom end of the piston 6 is fixedly connected to the output rod 5.

[0030] By providing a quick installation component, the staff can adjust or replace the supporting structure more quickly, thereby improving maintenance efficiency, reducing maintenance time, shortening downtime, and ensuring the normal operation of nuclear power plant equipment.

[0031] Among them Figure 4 As shown, the quick installation component 2 includes a pull rod 7 fixedly installed on the top of the piston 6, the top of the pull rod 7 extends outside the sleeve 4 and is slidably connected to the sleeve 4, a spring 8 is wound around the pull rod 7, the top of the spring 8 is fixedly connected to the sleeve 4, and the end of the spring 8 is fixedly connected to the piston 6.

[0032] By setting up the quick installation component 2, the labor intensity of the staff can be reduced, the difficulty of operation can be reduced, the task of adjusting or replacing the supporting structure can be made simpler and faster, and the workload of the staff can be reduced.

[0033] Among them Figure 2 As shown, a plurality of slide grooves 9 are provided on the top of the circular base plate 1, and a semicircular support plate 10 is slidably installed in two corresponding slide grooves 9 respectively. A plurality of bolts 11 are threadedly installed on the bottom end of the circular base plate 1, and the top ends of the plurality of bolts 11 extend into the plurality of slide grooves 9 respectively.

[0034] By providing the slide groove 9, the installation of the device is made easier, thereby reducing the workload of the staff and making the installation of the device faster.

[0035] Among them Figure 5 As shown, the fixing mechanism includes a fixing component 2 and a fixing component 3. The fixing component 2 includes a steam generator body 12 fixedly mounted on the top of two semicircular support plates 10. A semicircular fixing sleeve 13 is provided on the outer wall of the steam generator body 12. A shock-absorbing gasket 14 is fixedly mounted on the inner wall of the semicircular fixing sleeve 13. The inner wall of the shock-absorbing gasket 14 is in contact with the steam generator body 12.

[0036] By providing the second fixing component, the lower horizontal support structure of the steam generator can be effectively supported, maintaining its stability and structural integrity, thereby ensuring the safe operation of the equipment.

[0037] Among them Figure 6 As shown, the fixing component three is fixedly mounted on a plurality of support rods 15 respectively on the two semicircular support plates 10, and the ends of the plurality of support rods 15 are fixedly connected to the outer wall of the semicircular fixing sleeve 13. The semicircular fixing sleeve 13 is provided with a threaded groove 16, and a bolt 2 17 is installed in the inner thread of the threaded groove 16.

[0038] By setting the fixing component three, the accurate position of the horizontal support structure can be ensured, and displacement or loosening during operation can be avoided, thereby ensuring the normal operation of the equipment.

[0039] A specific application of this embodiment is: when in use, first place the circular base plate 1 on the ground, place the ground nail 3 on the U-shaped support plate 101, and then pull the pull rod 7 on the sleeve 4, the pull rod 7 drives the piston 6 to move upward, thereby compressing the spring 8 on the piston 6, driving the output rod 5 to move upward, and then release the pull rod 7. At this time, the piston 6 will drive the output rod 5 to move downward under the action of the elastic potential energy of the spring 8, thereby passing the ground nail 3 through the U-shaped support plate 101 and fixing it on the ground, thereby fixing the circular base plate 1. At this time, the semicircular support plate 10 is slidably installed on the circular base plate 1 by the sliding groove, and the bolt 11 is screwed to fix the semicircular support plate 10 on the circular base plate 1, and then the steam generator body 12 is placed on the semicircular support plate 10, the semicircular fixing sleeve 13 is sleeved on the steam generator body 12, and then the bolt 2 17 is screwed on the threaded groove 16 to fix the steam generator body 12 on the device.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A horizontal support structure for the lower part of a steam generator of a nuclear power plant, comprising a circular bottom plate (1), characterized in that: The circular bottom plate (1) is provided with a plurality of quick installation mechanisms and fixing mechanisms; The quick installation mechanism comprises a fixing component 1, a quick installation component 1 and a quick installation component 2, wherein the fixing component 1 comprises a U-shaped support plate (101) fixedly installed on the outer wall of the circular bottom plate (1), an L-shaped support plate (2) fixedly installed on the top of the U-shaped support plate (101), a ground nail (3) passing through the top of the U-shaped support plate (101), the ground nail (3) being slidably connected to the U-shaped support plate (101), and a sleeve (4) fixedly installed on the top of the L-shaped support plate (2).

2. A nuclear power plant steam generator lower horizontal support structure according to claim 1, characterized in that: The quick installation component 1 comprises an output rod (5) penetrating the L-shaped support plate (2), the output rod (5) being slidably connected to the L-shaped support plate (2), the top end of the output rod (5) extending into the sleeve (4) and being slidably connected to the sleeve (4), a piston (6) being slidably mounted on the inner wall of the sleeve (4), the bottom end of the piston (6) being fixedly connected to the output rod (5).

3. A nuclear power plant steam generator lower horizontal support structure according to claim 2, characterized in that: The second quick-install component comprises a pull rod (7) fixedly mounted on the top of the piston (6), the top of the pull rod (7) extending outside the sleeve (4) and being slidably connected to the sleeve (4), a spring (8) being wound around the pull rod (7), the top of the spring (8) being fixedly connected to the sleeve (4), and the end of the spring (8) being fixedly connected to the piston (6).

4. A nuclear power plant steam generator lower horizontal support structure according to claim 1, characterized in that: The top of the circular bottom plate (1) is provided with a plurality of slide grooves (9), and a semicircular support plate (10) is slidably installed in two corresponding slide grooves (9), and a plurality of bolts (11) are threadedly installed at the bottom end of the circular bottom plate (1), and the top ends of the plurality of bolts (11) extend into the plurality of slide grooves (9).

5. A nuclear power plant steam generator lower horizontal support structure according to claim 4, characterized in that: The fixing mechanism comprises a fixing component 2 and a fixing component 3, wherein the fixing component 2 comprises a steam generator body (12) fixedly mounted on the top of two semicircular support plates (10), a semicircular fixing sleeve (13) being arranged on the outer wall of the steam generator body (12), a shock-absorbing gasket (14) being fixedly mounted on the inner wall of the semicircular fixing sleeve (13), and the inner wall of the shock-absorbing gasket (14) being in contact with the steam generator body (12).

6. A nuclear power plant steam generator lower horizontal support structure according to claim 5, characterized in that: The fixing assembly three is respectively fixedly mounted on a plurality of support rods (15) on two semicircular support plates (10), and the ends of the plurality of support rods (15) are fixedly connected to the outer wall of the semicircular fixing sleeve (13). The semicircular fixing sleeve (13) is provided with a thread groove (16), and a bolt two (17) is installed in the inner thread of the thread groove (16).

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