A support base for the throat of an axial exhaust condenser

Abstract

This utility model relates to the technical field of axial exhaust condensers for steam turbines, and discloses a support base for the throat of an axial exhaust condenser. The support base has a top plate and a bottom plate arranged vertically. Along the length of the bottom plate, elastic support assemblies and rigid support assemblies are arranged at intervals between the bottom plate and the top plate. The height of the elastic support assemblies is adjustable. In the installed state, the rigid support assembly abuts against the top plate, and the elastic support assembly has a clearance fit with the top plate. In the operating state, the elastic support assembly abuts against the top plate by adjusting its height, and the rigid support assembly has a clearance fit with the top plate. This utility model can withstand loads and compensate for thermal expansion, thus improving the stability of the condenser.

Description

Technical Field

[0001] This utility model relates to the technical field of axial exhaust condensers for steam turbines, specifically to a support base for the throat of an axial exhaust condenser. Background Technology

[0002] A condenser is a heat exchanger that condenses turbine exhaust steam into water. The throat is a crucial component, guiding the steam discharged from the main turbine to the condenser's heat exchange area. In axial exhaust condensers, the turbine's low-pressure cylinder is directly connected to the turbine shaft axially via the throat. Steam flows smoothly from the low-pressure cylinder into the condenser, fully utilizing the exhaust kinetic energy and effectively reducing flow losses.

[0003] In the structure of a conventional axial exhaust condenser, a support is usually installed at the bottom of the hot well, but not at the throat. Under extreme conditions (earthquake, circulating water blind plate force), the support is prone to upward load, resulting in poor condenser stability, and in severe cases, it may even tilt.

[0004] Therefore, in order to solve the above problems, the industry has installed a support for the throat to bear the load of the throat; however, the support is usually a rigid structure. When the condenser is operating, the thermal expansion of the condenser shell and the throat is not synchronized, which may cause the support to come loose or be pulled apart, resulting in poor condenser stability. Utility Model Content

[0005] The technical objective of this invention is to address the shortcomings of the prior art by providing an axial exhaust condenser throat support base that can withstand loads, compensate for thermal expansion, and improve condenser stability.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A support base for the throat of an axial exhaust condenser, the support base having a top plate and a bottom plate arranged vertically;

[0008] On the base plate, along the length of the base plate, elastic support assemblies and rigid support assemblies are arranged at intervals between the base plate and the top plate;

[0009] The height of the elastic support assembly is adjustable;

[0010] In the installed state, the rigid support assembly abuts against the top plate, and the elastic support assembly is in clearance fit with the top plate.

[0011] In operation, the support base has the elastic support assembly abutting against the top plate by adjusting its height, and the rigid support assembly is in clearance fit with the top plate.

[0012] The above-mentioned technical measures, through the combination of rigid support components and flexible support components, enable the rigid support components to bear the load in the installed state, while facilitating the assembly and adjustment of the flexible support components. By adjusting the height of the flexible support components, the flexible support components can be made to abut against the top plate, thereby enabling the flexible support components to bear the load in the operating state. At the same time, the flexible support components can adapt to displacement and deformation caused by factors such as thermal expansion of the throat, which helps to ensure that the support base can stably support the throat under different operating conditions, and thus improves the stability of the condenser.

[0013] Furthermore, the elastic support assembly consists of two sets, which are symmetrically arranged at both ends of the base plate in the length direction;

[0014] The rigid support assembly is arranged between the two sets of elastic support assemblies.

[0015] The above-mentioned technical measures, by symmetrically arranging the elastic support components, help to avoid local stress concentration and improve the stability of the support base.

[0016] Furthermore, each set of elastic support assemblies has at least three sets of elastic supports arranged at intervals along the width direction of the base plate.

[0017] The above-mentioned technical measures, by setting up multiple sets of elastic supports, help to improve the load-bearing capacity and support stability of the support base.

[0018] Furthermore, each set of elastic supports includes a spring, a sliding plate, screws, and pads;

[0019] The spring is connected to the top of the movable plate;

[0020] The screw is threadedly connected to the movable plate, and the bottom of the screw abuts against the base plate. During the rotation of the screw, the movable plate moves up and down.

[0021] In the operating state, the support base has the spring abutting against the top plate, and multiple pads are arranged between the moving plate and the bottom plate, respectively abutting against the moving plate and the bottom plate.

[0022] In the above-mentioned technical measures, the support base in the installed state is moved upward by rotating the screw until the spring abuts against the top plate. Then, the screw can be removed by using the pads to abut against the moving plate and the bottom plate respectively. The moving plate and the bottom plate are connected by the pads, which also helps to prevent the screw from rotating accidentally when the support base is running.

[0023] Furthermore, there are at least two springs, and these springs are arranged at intervals along the length of the moving plate.

[0024] The above-mentioned technical measures, by setting multiple springs, help to distribute the load more evenly, reduce local stress concentration, and improve the support capacity of the elastic support.

[0025] Furthermore, there are multiple screws, and these screws are arranged along the circumferential spacing of the spring.

[0026] The above-mentioned technical measures facilitate the adjustment of the position of the moving plate by setting multiple screws.

[0027] Furthermore, the base plate has a recessed limiting groove corresponding to the screw;

[0028] The bottom of the screw abuts against the bottom surface of the limiting groove.

[0029] The above-mentioned technical measures, by setting a recessed limiting groove on the base plate corresponding to the screw, can help prevent the screw from being accidentally displaced during rotation and help ensure the stability of the screw rotation.

[0030] Furthermore, the rigid support assembly has a rigid support and is arranged between the two sets of elastic support assemblies;

[0031] The support base in the installed state, wherein the rigid support abuts against the top plate.

[0032] Furthermore, on the base plate, corresponding to the rigid support, there is a limiting support that restricts the displacement of the rigid support in the length direction of the rigid support.

[0033] Furthermore, the limiting support has a pad and two upwardly protruding limiting plates;

[0034] The two limiting plates are arranged at intervals on the pad along the length direction of the pad;

[0035] The rigid supports are arranged on the pad and between the two limiting plates;

[0036] The pad is connected to the base plate.

[0037] The above-mentioned technical measures, by setting limit supports and arranging rigid supports between two limit plates, can limit the displacement of the rigid supports in the length direction of the rigid supports, avoid excessive displacement of the rigid supports, and improve stability; at the same time, they do not limit the displacement of the rigid supports in the width direction of the rigid supports, so as to avoid damage to the roof plate when the roof plate tilts in the width direction due to throat deformation or displacement.

[0038] One or more technical solutions provided by this utility model have at least the following technical effects or advantages:

[0039] This invention combines a rigid support assembly and an elastic support assembly. In the installed state, the rigid support assembly can bear the load, while the elastic support assembly is easy to assemble and adjust. By adjusting the height of the elastic support assembly, it can be made to abut against the top plate, thus bearing the load in the operating state. At the same time, the elastic support assembly can adapt to displacement and deformation caused by thermal expansion of the throat, which helps to ensure that the support base can stably support the throat under different operating conditions, thereby improving the stability of the condenser. Attached Figure Description

[0040] The accompanying drawings, which are provided to further illustrate the embodiments of the present invention and constitute a part of the present invention, do not constitute a limitation thereof.

[0041] Figure 1 This is a schematic diagram of the structure of this utility model;

[0042] Figure 2 This is a side view of the present invention;

[0043] Wherein, 1-top plate; 2-bottom plate; 3-elastic support; 31-spring; 32-screw; 33-moving plate; 34-pad; 4-rigid support; 5-limiting support; 51-pad; 52-limiting plate;

[0044] A1 - Length direction of the base plate;

[0045] B1 - Width direction of the base plate. Detailed Implementation

[0046] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments of this utility model and the features thereof can be combined with each other.

[0047] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0048] Example 1

[0049] Reference Figures 1-2 This embodiment provides a support base for the throat of an axial exhaust condenser.

[0050] The support base has a top plate 1 and a bottom plate 2 arranged vertically.

[0051] On the base plate 2, along the length direction of the base plate 2, there are elastic support components and rigid support components arranged at intervals between the base plate 2 and the top plate 1; the length direction of the base plate 2 refers to the length direction A1 of the base plate.

[0052] The height of the flexible support assembly is adjustable;

[0053] In the installed state, the rigid support assembly abuts against the top plate 1, and the elastic support assembly is in clearance fit with the top plate 1.

[0054] In operation, the support base has an elastic support assembly that abuts against the top plate 1 by adjusting its height, while the rigid support assembly has a clearance fit with the top plate 1.

[0055] There are two sets of elastic support assemblies, symmetrically arranged at both ends of the base plate 2 along its length. The two ends of the base plate 2 along its length refer to the two ends of the base plate along the length direction A1. Rigid support assemblies are arranged between the two sets of elastic support assemblies.

[0056] Each set of elastic support components has at least three sets of elastic supports 3 arranged at intervals along the width direction of the base plate 2. In this embodiment, each set of elastic support components has three sets of elastic supports 3. The width direction of the base plate 2 refers to the width direction B1 of the base plate.

[0057] Each set of elastic supports 3 has a spring 31, a movable plate 33, a screw 32, and a pad 34;

[0058] Spring 31 is connected to the top of the movable plate 33;

[0059] The screw 32 is threadedly connected to the movable plate 33, and the bottom of the screw 32 abuts against the base plate 2. During the rotation of the screw 32, the movable plate 33 moves up and down. The movable plate 33 is provided with multiple threaded holes that match the screw 32.

[0060] In operation, the support base has spring 31 abutting against top plate 1, and multiple pads 34 are arranged between movable plate 33 and bottom plate 2 respectively abutting against movable plate 33 and bottom plate 2.

[0061] Among them, the pad 34 comes in a variety of different sizes, which helps to adapt to different working conditions.

[0062] Each set of elastic supports 3 has at least two springs 31, and these springs 31 are arranged at intervals along the length direction of the movable plate 33. The length direction of the movable plate 33 is the same as the length direction A1 of the base plate.

[0063] Each set of elastic supports 3 has multiple screws 32, and these screws 32 are arranged along the circumferential spacing of the spring 31. The specific number of screws 32 and threaded holes on the movable plate 33 depends on the actual situation, and this embodiment does not make a specific limitation.

[0064] On the base plate 2, corresponding to the screw 32, there is a recessed limiting groove; the bottom of the screw 32 abuts against the bottom surface of the limiting groove.

[0065] The rigid support assembly has a rigid support 4, which is arranged between two sets of elastic support assemblies.

[0066] The support base in the installed state, with the rigid support 4 abutting against the top plate 1.

[0067] On the base plate 2, corresponding to the rigid support 4, there is a limiting support 5 that restricts the displacement of the rigid support 4 in the length direction of the rigid support. The length direction of the rigid support is the same as the length direction A1 of the base plate, the width direction of the rigid support is the same as the width direction B1 of the base plate, and the width direction of the top plate is the same as the width direction B1 of the base plate.

[0068] The limiting support 5 has a pad 51 and two upwardly protruding limiting plates 52;

[0069] Two limiting plates 52 are arranged at intervals on the pad 51 along the length direction of the pad 51; the length direction of the pad 51 is the same as the length direction A1 of the base plate.

[0070] Rigid supports 4 are arranged on pad 51 and between two limiting plates 52;

[0071] The rigid support 4 has a welded abutment part and a connecting part. When the support base is installed, the abutment part is used to abut against the top plate 1; the connecting part is connected to the pad plate 51.

[0072] The pad 51 is connected to the base plate 2. The pad 51 and the base plate 2 can be connected by welding.

[0073] In application, place the support base at the designated position below the throat, and place the throat on the support base. The rigid support 4 supports the throat, and there is a gap between the elastic support 3 and the top plate 1. The operator drives the moving plate 33 upward by rotating the screw 32 until the spring 31 of the elastic support 3 abuts against the top plate 1, and there is a gap between the rigid support 4 and the top plate 1. At this point, the throat is supported by the elastic support 3. Then, select a shim 34 of appropriate size and place it between the moving plate 33 and the bottom plate 2. If there is no matching shim 34, select a shim 34 of similar size and modify it to fit the appropriate size before placing it between the moving plate 33 and the bottom plate 2. After the shim 34 is assembled, the screw 32 can be rotated and removed, and the shim 34 supports the moving plate 33, completing the installation of the support base.

[0074] During operation, when the throat and condenser shell expand asynchronously, causing the throat to be pressed down, spring 31 will be further compressed; when the throat and condenser shell expand asynchronously, causing the throat to be lifted, spring 31 will rebound; when the throat and condenser shell expand asynchronously, causing the throat to be in an inclined state, some springs 31 will be further compressed, and some springs 31 will rebound, making the top plate 1 in an inclined state; when the top plate 1 is in an inclined state, the rigid support 4 will move accordingly relative to the top plate 1, which helps to avoid damage to the top plate 1 by the rigid support 4; thus ensuring that the support base can stably support the throat under different working conditions.

[0075] The support base in this embodiment can also be used to support condenser hot wells, showing good versatility.

[0076] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0077] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A support base for the throat of an axial exhaust condenser, characterized in that: The support base has a top plate (1) and a bottom plate (2) arranged vertically. On the base plate (2), along the length direction of the base plate (2), there are elastic support components and rigid support components arranged at intervals between the base plate (2) and the top plate (1); The height of the elastic support assembly is adjustable; In the installed state, the rigid support assembly abuts against the top plate (1), and the elastic support assembly is in clearance fit with the top plate (1). In operation, the support base has the elastic support assembly abutting against the top plate (1) by adjusting its height, and the rigid support assembly is in clearance fit with the top plate (1).

2. The support base for the throat of the axial exhaust condenser according to claim 1, characterized in that: The elastic support assembly consists of two sets, which are symmetrically arranged at both ends of the base plate (2) in the length direction; The rigid support assembly is arranged between the two sets of elastic support assemblies.

3. The support base for the throat of the axial exhaust condenser according to claim 2, characterized in that: Each set of elastic support assemblies has at least three sets of elastic supports (3) arranged on the base plate (2) at intervals along the width direction of the base plate (2).

4. The support base for the throat of the axial exhaust condenser according to claim 3, characterized in that: Each set of elastic supports (3) has a spring (31), a movable plate (33), a screw (32) and a pad (34); The spring (31) is connected to the top of the movable plate (33); The screw (32) is threadedly connected to the movable plate (33), and the bottom of the screw (32) abuts against the base plate (2). During the rotation of the screw (32), the movable plate (33) moves up and down. In the operating state, the spring (31) abuts against the top plate (1) of the support base, and multiple pads (34) are arranged between the moving plate (33) and the bottom plate (2) respectively abutting against the moving plate (33) and the bottom plate (2).

5. The support base for the throat of the axial exhaust condenser according to claim 4, characterized in that: There are at least two springs (31), and these springs (31) are arranged at intervals along the length of the moving plate (33).

6. The support base for the throat of the axial exhaust condenser according to claim 5, characterized in that: There are multiple screws (32), and these screws (32) are arranged along the circumferential spacing of the spring (31).

7. The support base for the throat of the axial exhaust condenser according to claim 6, characterized in that: The base plate (2) has a recessed limiting groove corresponding to the screw (32); The bottom of the screw (32) abuts against the bottom surface of the limiting groove.

8. The support base for the throat of the axial exhaust condenser according to claim 2, characterized in that: The rigid support assembly has a rigid support (4) and is arranged between the two sets of elastic support assemblies; The support base in the installed state, the rigid support (4) abuts against the top plate (1).

9. The support base for the throat of the axial exhaust condenser according to claim 8, characterized in that: On the base plate (2), corresponding to the rigid support (4), there is a limiting support (5) that restricts the displacement of the rigid support (4) in the length direction of the rigid support.

10. The support base for the throat of the axial exhaust condenser according to claim 9, characterized in that: The limiting support (5) has a pad (51) and two upwardly protruding limiting plates (52). The two limiting plates (52) are arranged at intervals on the pad (51) along the length direction of the pad (51); The rigid support (4) is arranged on the pad (51) and between the two limiting plates (52) opposite each other; The pad (51) is connected to the base plate (2).

Images