Three-pipe sleeve type chimney steel inner cylinder shake stopping system

Abstract

The utility model provides a three-pipe sleeve type chimney steel inner cylinder shake stopping system, which reduces the internal force of a steel inner cylinder under the action of earthquake and wind load of an exposed section of the inner cylinder, and optimizes the steel consumption of the steel inner cylinder. The suspension section is connected with the self-standing section; the steel inner cylinder is sleeved with the concrete outer cylinder; the bearing platform, the suspension platform and the shake stopping platform are fixedly mounted on the concrete outer cylinder; the load-bearing supporting ring beam is fixedly arranged on the self-standing section in a sleeving manner and is fixedly arranged on the load-bearing platform; the suspension section is fixedly sleeved with the shake-stopping supporting ring beam. The guide constraint rod is fixed on the shake-stopping support ring beam; the sliding plate is fixed on the guide constraint rod; the shake-stopping supporting elastic rubber support is fixedly mounted on the shake-stopping platform; the guide restraint rod limiter is fixedly mounted on the shake-stopping supporting elastic rubber support, and the sliding plate is connected with the guide restraint rod limiter in a sliding manner; the suspension support frame is fixed at the upper part of the suspension section; the suspension supporting elastic rubber support is arranged on the suspension platform, and the suspension supporting frame is arranged on the suspension supporting elastic rubber support.

Description

Technical Field

[0001] The utility model relates to a three-tube sleeve type chimney steel inner tube anti-sway system. Background Art

[0002] At present, sleeve chimneys are widely used in power plants due to their advantages such as beauty, safety, and easy maintenance. The outer tube of a sleeve chimney is generally a reinforced concrete outer tube, and the inner tube is generally a steel inner tube or a fiberglass inner tube. It is self-supporting or suspended on a platform, and the load is transferred to the concrete outer tube through the platform. When a single inner tube or a double inner tube is used, due to the double-axis symmetry in the plane of the inner tube, the arrangement of each platform structure and constraint can be evenly arranged. When a three-inner tube arrangement is used, since there is only one symmetry axis in the plane of the inner tube, the arrangement of the platform load-bearing structure and constraints is very difficult. The existing three-tube sleeve chimney platform arrangement and inner tube constraints often directly apply the single tube and double tube approach. The connection between the load-bearing platform and the self-supporting section, the connection between the anti-sway platform and the middle section, and the connection between the suspension platform and the suspension section all act independently, and a reasonable force constraint system is not formed. An unreasonable constraint system will cause the internal force of the inner tube to increase under the action of earthquakes and wind loads on the exposed section of the inner tube, thereby increasing the cost of the steel inner tube. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a three-tube sleeve chimney steel inner tube anti-sway system with a rational structural design, so as to reduce the internal force of the steel inner tube under the action of earthquake and wind load on the exposed section of the inner tube and optimize the steel consumption of the steel inner tube.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problems is: a three-tube sleeve type chimney steel inner tube anti-sway system, including a concrete outer tube, a steel inner tube, a load-bearing platform, a hanging platform and an anti-sway platform; the steel inner tube includes a self-supporting section and a hanging section, the hanging section is hung on the hanging platform and is connected to the self-supporting section; the concrete outer tube is sleeved outside the steel inner tube; the load-bearing platform, the hanging platform and the anti-sway platform are all fixedly installed on the concrete outer tube; it is characterized in that: it also includes a load-bearing support structure, a hanging support structure and an anti-sway support structure; the load-bearing support structure includes a load-bearing support ring beam; the load-bearing support ring beam is fixedly sleeved on the self-supporting section, the load-bearing support ring beam is arranged on the load-bearing platform and is fixed to the load-bearing platform; the anti-sway support structure includes an anti-sway support ring beam, an anti-sway support Support elastic rubber bearing, guide constraint rod limiter, guide constraint rod and sliding plate; the anti-sway support ring beam is fixedly mounted on the suspension section; the guide constraint rod is fixed on the anti-sway support ring beam; the sliding plate is fixed on the guide constraint rod; the anti-sway support elastic rubber bearing is fixedly mounted on the anti-sway platform; the guide constraint rod limiter is fixedly mounted on the anti-sway support elastic rubber bearing, and the sliding plate is slidably connected with the guide constraint rod limiter; the suspension support structure includes a suspension support frame and a suspension support elastic rubber bearing; the suspension support frame is fixed on the upper part of the suspension section; the suspension support elastic rubber bearing is arranged on the suspension platform, the suspension support frame is arranged on the suspension support elastic rubber bearing, and the suspension support elastic rubber bearing, the suspension platform and the suspension support frame are fixed together.

[0005] The lower part of the suspension section of the utility model is connected with the self-supporting section through an expansion joint.

[0006] The utility model comprises three sets of steel inner cylinders which are symmetrically arranged in an equilateral triangle and take the center of the concrete outer cylinder as the centroid.

[0007] The load-bearing support ring beam of the utility model is fixed to the load-bearing platform through load-bearing support connecting bolts.

[0008] The anti-sway support elastic rubber bearing of the utility model is fixedly installed on the anti-sway platform through the anti-sway support connecting bolts.

[0009] The suspension support frame of the utility model comprises a suspension support buttress column and a suspension support ring beam. The suspension support ring beam is fixedly sleeved on the upper part of the suspension section, and the suspension support buttress column is fixed on the suspension support ring beam and the suspension section.

[0010] The suspension support elastic rubber bearing, the suspension platform and the suspension support frame of the utility model are fixed together by suspension support connecting bolts.

[0011] Compared with the prior art, the utility model has the following advantages and effects:

[0012] (1) The load-bearing platform, anti-sway platform and suspension platform components are arranged reasonably to evenly transfer the load on the steel inner tube to the concrete outer tube;

[0013] (2) The load-bearing platform is rigidly connected to the self-supporting section of the steel inner tube, which can provide sufficient bending resistance moment for the steel inner tube;

[0014] (3) The semi-rigid connection between the suspension platform and the steel inner tube suspension section can provide a certain rotation angle for the steel inner tube suspension section and release the bending moment of the suspension section;

[0015] (4) The anti-sway platform is flexibly connected to the steel inner tube, which not only constrains the large translation of the steel inner tube but also provides a certain translation space for the steel inner tube. The rubber bearing also provides a certain energy dissipation capacity, thus reducing the impact of earthquakes.

[0016] (5) The load-bearing platform, anti-sway platform and suspension platform constrain the steel inner tube to form a force-rational anti-sway system, which reduces the additional displacement and additional stress generated by the steel inner tube under earthquake and wind load conditions of the exposed section of the inner tube, and saves the amount of steel used in the steel inner tube.

[0017] (6) The arrangement of the anti-sway system of the present invention fully utilizes the space of each platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the elevation structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the plane structure of the load-bearing platform of the utility model.

[0020] Figure 3 It is a schematic diagram of the plane structure of the load-bearing support structure of the utility model.

[0021] Figure 4 It is a schematic diagram of the elevation structure of the load-bearing platform of the utility model.

[0022] Figure 5 It is a schematic diagram of the planar structure of the anti-sway platform of the utility model.

[0023] Figure 6 It is a schematic diagram of the planar structure of the anti-sway support structure of the utility model.

[0024] Figure 7 It is a schematic diagram of the elevation structure of the anti-sway support structure of the utility model.

[0025] Figure 8 It is a schematic diagram of the planar structure of the suspension platform of the utility model.

[0026] Fig. 9 It is a schematic diagram of the elevation structure of the suspension support structure of the utility model.

[0027] Fig.10 It is a side structural schematic diagram of the suspension support structure of the utility model. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0029] The embodiment of the utility model includes a concrete outer tube 10, a steel inner tube, a load-bearing platform 3, a load-bearing support structure 7, a suspension platform 5, a suspension support structure 9, an anti-sway platform 4 and an anti-sway support structure 8.

[0030] The steel inner tube includes a self-supporting section 2 and a hanging section 1; the hanging section 1 is suspended on a hanging platform 5, and the lower part of the hanging section 1 is connected to the self-supporting section 2 through an expansion joint 6. The expansion joint 6 can be selected from finished expansion joints that meet the requirements according to the stiffness and relative deformation of the self-supporting section 2 and the hanging section 1. The steel inner tube is composed of three sets, which are symmetrically arranged in an equilateral triangle, and the center of the concrete outer tube 10 is taken as the centroid, which makes full use of the space and can evenly transfer the load to the concrete outer tube 10, thereby increasing the safety of the three-tube sleeve chimney.

[0031] The concrete outer tube 10 is sleeved outside the steel inner tube. As the load-bearing skeleton of the three-tube sleeve chimney, the concrete outer tube 10 needs to bear the vertical load transmitted by each platform, the earthquake load and the reaction force generated by the steel inner tube caused by the earthquake load, the wind load and the reaction force generated by the steel inner tube caused by the wind load on the exposed section of the steel inner tube. The concrete outer tube 10 needs to be set with corresponding connection nodes in combination with the layout of the main load-bearing steel beams of each platform.

[0032] The load-bearing platform 3 is fixedly mounted on the concrete outer cylinder 10. The self-supporting section 2 is rigidly connected to the load-bearing platform 3 through the load-bearing support structure 7, and the load is transferred to the concrete outer cylinder 10 through the load-bearing platform 3. The load-bearing support structure 7 includes a load-bearing support ring beam 71 and a load-bearing support connecting bolt 72. The load-bearing support ring beam 71 is fixedly sleeved on the self-supporting section 2, and the load-bearing support ring beam 71 is arranged on the load-bearing platform 3 and fixed to the load-bearing platform 3 through the load-bearing support connecting bolt 72.

[0033] The anti-sway platform 4 is fixedly mounted on the concrete outer tube 10. The suspension section 1 is flexibly connected to the anti-sway platform 4 through the anti-sway support structure 8. The anti-sway support structure 8 includes an anti-sway support ring beam 81, an anti-sway support connecting bolt 82, an anti-sway support elastic rubber bearing 83, a guide constraint rod limiter 84, a guide constraint rod 85 and a sliding plate 86. The anti-sway support ring beam 81 is fixedly mounted on the suspension section 1; the guide constraint rod 85 is fixed on the anti-sway support ring beam 81; the sliding plate 86 is fixed on the guide constraint rod 85, and the sliding plate 86 is made of composite polytetrafluoroethylene; the anti-sway support elastic rubber bearing 83 is fixedly mounted on the anti-sway platform 4 through the anti-sway support connecting bolt 82; the guide constraint rod limiter 84 is fixedly mounted on the anti-sway support elastic rubber bearing 83, and the sliding plate 86 is slidably connected to the guide constraint rod limiter 84. The sliding plate 86 provides the guide constraint rod 85 with a certain translational space, and the guide constraint rod limiter 84 limits the displacement of the guide constraint rod 85 out of the plane to prevent the inner tube from twisting; the sliding plate 86 and the anti-sway support elastic rubber bearing 83 provide a certain energy absorption capacity for the steel inner tube under the action of earthquake; the length of the anti-sway support connecting bolt 82 and the thickness of the anti-sway support elastic rubber bearing 83 need to be calculated based on the stiffness of the bearing and the vertical deformation of the steel inner tube.

[0034] The suspension platform 5 is fixedly mounted on the upper part of the concrete outer cylinder 10. The upper part of the suspension section 1 is semi-rigidly connected to the suspension platform 5 through the suspension support structure 9. The suspension support structure 9 includes a suspension support frame, a suspension support connecting bolt 92 and a suspension support elastic rubber bearing 93. The suspension support frame includes a suspension support buttress column 91 and a suspension support ring beam 94. The suspension support ring beam 94 is fixedly sleeved on the upper part of the suspension section 1. The suspension support buttress column 91 is fixed on the suspension support ring beam 94 and the suspension section 1, so that the suspension support frame is fixed on the upper part of the suspension section 1. The suspension support elastic rubber bearing 93 is arranged on the suspension platform 5, and the suspension support frame is arranged on the suspension support elastic rubber bearing 93. The suspension support elastic rubber bearing 93, the suspension platform 5, and the suspension support frame are fixed together by the suspension support connecting bolt 92. In this way, the suspension section 1 is suspended on the suspension platform 5. The upper part of the suspension section 1 transfers the load to the concrete outer cylinder 10 through the suspension platform 5. The suspension support elastic rubber bearing 93 provides a certain angle for the rotation of the suspension section 1, thereby releasing the bending moment generated by the steel inner tube under the action of an earthquake.

[0035] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. The three-tube sleeve chimney steel inner tube anti-sway system includes a concrete outer tube, a steel inner tube, a load-bearing platform, a hanging platform and an anti-sway platform; the steel inner tube includes a self-supporting section and a hanging section, the hanging section is hung on the hanging platform and connected to the self-supporting section; the concrete outer tube is sleeved outside the steel inner tube; the load-bearing platform, the hanging platform and the anti-sway platform are all fixedly installed on the concrete outer tube; the characteristics are: It also includes a load-bearing support structure, a suspension support structure and an anti-sway support structure; the load-bearing support structure includes a load-bearing support ring beam; the load-bearing support ring beam is fixedly mounted on the self-supporting section, the load-bearing support ring beam is arranged on the load-bearing platform and fixed to the load-bearing platform; the anti-sway support structure includes an anti-sway support ring beam, an anti-sway support elastic rubber bearing, a guide constraint rod limiter, a guide constraint rod and a sliding plate; the anti-sway support ring beam is fixedly mounted on the suspension section; the guide constraint rod is fixed on the anti-sway support ring beam; the sliding plate is fixed on the guide constraint rod; the anti-sway support elastic rubber bearing is fixedly mounted on the anti-sway platform; the guide constraint rod limiter is fixedly mounted on the anti-sway support elastic rubber bearing, and the sliding plate is slidably connected to the guide constraint rod limiter; the suspension support structure includes a suspension support frame and a suspension support elastic rubber bearing; the suspension support frame is fixed on the upper part of the suspension section; the suspension support elastic rubber bearing is arranged on the suspension platform, the suspension support frame is arranged on the suspension support elastic rubber bearing, and the suspension support elastic rubber bearing, the suspension platform and the suspension support frame are fixed together.

2. The three-tube sleeve chimney steel inner tube anti-sway system according to claim 1 is characterized by: The lower part of the hanging section is connected with the self-supporting section through an expansion joint.

3. The three-tube sleeve chimney steel inner tube anti-sway system according to claim 1 is characterized by: The steel inner cylinders are three sets, which are symmetrically arranged in a regular triangle, and the center of the concrete outer cylinder is the center of the shape.

4. The three-tube sleeve chimney steel inner tube anti-sway system according to claim 1 is characterized by: The load-bearing support ring beam is fixed to the load-bearing platform via load-bearing support connecting bolts.

5. The three-tube sleeve chimney steel inner tube anti-sway system according to claim 1 is characterized by: The anti-sway support elastic rubber bearing is fixedly installed on the anti-sway platform through the anti-sway support connecting bolts.

6. The three-tube sleeve chimney steel inner tube anti-sway system according to claim 1 is characterized by: The suspension support frame comprises a suspension support buttress column and a suspension support ring beam. The suspension support ring beam is fixedly sleeved on the upper part of the suspension section, and the suspension support buttress column is fixed on the suspension support ring beam and the suspension section.

7. The three-tube sleeve chimney steel inner tube anti-sway system according to claim 1 is characterized by: The suspension support elastic rubber bearing, the suspension platform and the suspension support frame are fixed together by suspension support connecting bolts.

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