Vertical sleeving supporting structure of high-pressure heater

Abstract

The invention discloses a high-pressure heater vertical position sleeving and supporting structure which comprises a shell, two headers located in a vertical position and a tube bundle fixedly connected with the two headers, the tube bundle is arranged in a cladding, and the cladding fixes the tube bundle through a plurality of fixedly connected supporting plates. Two parallel guide rails are fixedly connected to the bottom side in the shell, a section of supporting beam is fixedly connected to the middle of each of the two opposite outer sides of the cladding, and one supporting beam is adjacent to the two guide rails and located above the two guide rails; limiting beams fixedly connected with the shell are arranged on the two sides of the two supporting beams, a plurality of supporting rollers corresponding to the limiting beams are fixedly arranged at the two ends of the two supporting beams through connecting plates, and the supporting rollers and the limiting beams are arranged at intervals. A plurality of sleeved rollers matched with the two guide rails are fixedly arranged on the support beam positioned above the two guide rails; according to the invention, the sleeving work is more convenient and labor-saving, the sleeving period is shortened, the tool material can be greatly reduced, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to a high-pressure heater set supporting structure, in particular to a standing set supporting structure for a serpentine tube high-pressure heater. Background Art

[0002] High-pressure heaters are important equipment in the feedwater heat recovery system of thermal power plants and nuclear power plants. Their performance and reliability directly affect the economy and safety of unit operation. In recent years, large-capacity, high-parameter units have continued to increase, and the frequent start and stop of units and rapid load changes have made the operating conditions of high-pressure heaters increasingly severe. The serpentine-header high-pressure heater (hereinafter referred to as the serpentine high-pressure heater) has excellent thermal elasticity, thermal shock resistance and the ability to withstand a high temperature rise rate. It can better meet the peak-shaving needs of power plants and is widely used in the heat recovery system of million ultra-supercritical generator sets.

[0003] like Figure 1 As shown in the figure, the piping system of the serpentine high-pressure heater is composed of two headers 21, a serpentine tube bundle 22, a cladding 23 and a support plate (or baffle); when the piping system is manufactured, the two headers 21 are in a vertical position and the serpentine tube bundle 22 is in a horizontal position. A pipe stand is required to support the serpentine tube bundle 22. After the piping system is manufactured and installed, the pipe stand needs to be removed. The final operating position of the serpentine high-pressure heater is as follows: Figure 2 As shown, when the shell 24 is currently installed with the pipe system, the pipe system must be rotated 90° so that the header 21 is in a horizontal position and the serpentine tube bundle 22 is in a vertical plane. The pipe rack must be erected again to support the serpentine tube bundle 22 to control the deformation of the tube bundle and make the tube bundle suspended in the air for installation. Since the pipe system of the serpentine tube high pressure is large in size and weighs usually more than 100 tons, the corresponding pipe rack uses a lot of materials and takes a long time to set up, resulting in a long period of installation in the horizontal position of the header and high tooling costs. In addition, the pipe system is easily damaged during the rotation process, affecting product quality, and there are also great safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a high-voltage heater standing set support structure in view of the above-mentioned deficiencies in the prior art, which can make the set work more convenient, save labor, shorten the set cycle, greatly reduce the tooling materials, and improve product quality.

[0005] In order to achieve the above-mentioned purpose, a high-pressure heater standing set support structure of the present invention comprises a shell, two collecting boxes in standing position, and a tube bundle fixedly connected to the two collecting boxes, wherein the tube bundle is placed in a cladding, and the cladding fixes the tube bundle by a number of fixed support plates; it is characterized in that: two parallel guide rails are fixedly connected to the bottom side of the shell, and a section of support beam is fixedly connected to the middle of the two opposite outer sides of the cladding, and one of the support beams is adjacent to the two guide rails and located above them; both sides of the two support beams are provided with limiting beams fixedly connected to the shell, and both ends of the two support beams are fixedly provided with a number of support rollers corresponding to the respective limiting beams through connecting plates, and the support rollers and the limiting beams are arranged with a gap; the support beam located above the two guide rails is fixedly provided with a number of set rollers cooperating with the two guide rails.

[0006] The above-mentioned support beam can be an I-beam or a channel steel; The above-mentioned limit beam can be an angle steel or a T-beam; During assembly, the pipe system is manufactured and the header is in a standing position. At this time, the pipe system does not need to be rotated. It is only necessary to place each set roller on two guide rails, and at the same time, several support rollers at both ends of the two support beams are placed between the corresponding two limit beams, and the shell or the pipe system is axially moved to complete the set. The support roller plays a guiding role during the set, and the shell will not be stuck or scratched due to lateral displacement. Not only does it make the set work more convenient and labor-saving, but it also does not need to re-erect the pipe rack to support the pipe system, which can shorten the set cycle. The tooling used is simple and easy to manufacture, which can greatly reduce the tooling materials and improve product quality. As a further improvement of the present invention, the width of the guide rail is greater than the width of the mounting roller, so as to prevent the tube bundle from scratching the shell during the mounting process; As a further improvement of the present invention, the gap between the support roller and the limit beam is less than 5 mm; a suitable gap is convenient for installation and can prevent large lateral displacement; In summary, the present invention can make the assembly work more convenient, save labor, shorten the assembly cycle, greatly reduce the use of tooling materials, and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Front view of the serpentine tube bundle.

[0008] Figure 2 This is the main view of the serpentine high-pressure heater in operation.

[0009] Figure 3 It is a front view of an embodiment of the present invention.

[0010] Figure 4 for Figure 3 Enlarged view of point A.

[0011] Figure 5 The main view of the embodiment of the present invention adjusted to the running state DETAILED DESCRIPTION

[0012] The present invention is further described below in conjunction with the accompanying drawings.

[0013] like Figure 3 to Figure 4 As shown, a high-pressure heater standing set support structure of this embodiment comprises a shell 1, two headers 2 in a standing position, and a serpentine tube bundle 3 welded and fixedly connected to the two headers 2, the serpentine tube bundle 3 is placed in a cladding 4, and the cladding 4 fixes the serpentine tube bundle 3 through a number of fixedly connected support plates 5; two parallel guide rails 6 are welded and fixedly connected to the bottom side of the shell 1, and a section of I-beam 7 as a support beam is welded and fixedly connected to the middle of the two opposite outer sides of the cladding 4, wherein one I-beam 7 is adjacent to the two guide rails 6 and is located on them Square; both sides of the two I-beams 7 are provided with angle steels 8 as limit beams which are welded and fixedly connected to the shell body 1 through connecting blocks 12; both ends of the two I-beams 7 are welded and fixedly provided with a plurality of support rollers 10 corresponding to the respective angle steels 8 through connecting plates 9; a gap of less than 5 mm is set between the support rollers 10 and an outer end surface of the angle steel 8; the I-beam 7 located above the two guide rails is fixedly provided with a plurality of set rollers 11 cooperating with the two guide rails 6 through connecting plates 9, and the width of the guide rail 6 is greater than the width of the set rollers 11.

[0014] The manufacturing and assembly process of the present invention is as follows: two parallel guide rails 6 are welded and fixedly connected on the bottom side of the shell 1, and four angle steels 8 as limit beams are welded and fixedly connected to the shell 1 through several connecting blocks 12; when the manufactured serpentine tube bundle 3, two headers 2 and the cladding 4 are assembled with the shell 1, the header 2 is in a standing position, and a section of I-beam 7 as a support beam is welded and fixedly connected to the middle of the two opposite outer sides of the cladding 4, and several supporting rollers 10 are welded and fixedly provided at both ends of the two I-beams 7 through connecting plates 9, and one of the I-beams 7 is fixedly provided with several set rollers 11 through the connecting plate 9; at this time, there is no need to rotate the pipe system, only the pipe system or the shell 1 needs to be moved axially, and each set roller 11 is placed on the two guide rails 6, and at the same time, the two I-beams 7 The several support rollers 10 at both ends are placed between the corresponding two angle steels 8. The pipe racks can be removed in sequence while the axial movement is performed to complete the installation. The support roller 10 cooperates with one outer end face of the angle steel 8 to play a guiding role during installation. The cladding 4 will not get stuck or scratch the shell 1 due to lateral displacement. The other outer end face of the angle steel 8 cooperates with the cladding 4 to perform auxiliary limiting in the longitudinal direction, which not only makes the installation work more convenient and labor-saving, but also does not require the pipe rack to be re-erected to support the serpentine tube bundle 3, which can shorten the installation cycle. The tooling used is simple and easy to manufacture, which can greatly reduce the tooling materials and improve product quality. The width of the guide rail 6 is greater than the width of the installation roller 11 to prevent the serpentine tube bundle 3 from scratching the shell 1 during the installation process. After installation, Figure 5 As shown, the two extended headers 2 are welded to the shell 1 to complete the connection of the entire heater, and the entire heater can be easily rotated 90° to adjust to the operating state; The present invention is not limited to the above-mentioned embodiments. For example, the support beam may also be a channel steel, and the limit beam may also be a T-beam. The above embodiments have been described, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments.

Claims

1. A high-pressure heater vertical set support structure, comprising a shell, two vertical headers, and a tube bundle fixedly connected to the two headers, wherein the tube bundle is placed in a cladding, and the cladding fixes the tube bundle through several fixed support plates; characterized in that: Two parallel guide rails are fixedly connected to the bottom side of the shell, and a support beam is fixedly connected to the middle part of the two opposite outer sides of the shell, one of which is adjacent to the two guide rails and located above them; both sides of the two support beams are provided with limit beams fixed to the shell, and both ends of the two support beams are fixed with several support rollers corresponding to their respective limit beams through connecting plates, and the support rollers and the limit beams are set with a gap; the support beam located above the two guide rails is fixed with several set rollers that cooperate with the two guide rails.

2. A high-voltage heater stand-up support structure as claimed in claim 1, characterized in that: The support beam is an I-beam or a channel steel.

3. A high-voltage heater stand-up support structure according to claim 1 or 2, characterized in that: The limiting beam is an angle steel or a T-beam.

4. A high-voltage heater stand-up support structure as claimed in claim 3, characterized in that: The guide rail width is greater than the mounted roller width.

5. A high-voltage heater stand-up support structure as claimed in claim 4, characterized in that: The gap between the supporting roller and the limiting beam is less than 5 mm.

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