Supporting structure suitable for large lateral exhaust steam condenser and exhaust steam condenser

Abstract

The utility model discloses a supporting structure suitable for a large lateral steam exhaust condenser and the steam exhaust condenser, and relates to the field of condenser supporting structures, the supporting structure comprises a plurality of multi-ball supports, a limiting support and a spring support; the multi-ball support is used for supporting a shell of the condenser and comprises a multi-ball base and a multi-ball supporting block, the multi-ball supporting block is in sliding connection with the multi-ball base, and a plurality of steel balls are arranged between the multi-ball supporting block and the multi-ball base; the limiting support is used for supporting a shell and a throat part of the condenser and comprises a sliding rail and a sliding block supporting piece, and the sliding block supporting piece is in sliding connection with the sliding block; the spring support is used for supporting the throat portion of the condenser and comprises a spring base and a spring supporting block, and a plurality of compression springs are arranged between the spring supporting block and the spring base. The large lateral steam exhaust condenser can effectively solve the problem that the large lateral steam exhaust condenser is large in sliding friction counter-force, and the overall stability of the large lateral steam exhaust condenser is improved.

Description

Technical Field

[0001] This utility model relates to the field of condenser support structures, and in particular to a support structure and condenser for large side-exhaust condensers. Background Technology

[0002] With the increasing maturity of gas turbine technology, combined cycle power plants have become an important development direction for the global power industry. To reduce plant height and facilitate layout, combined cycle power plants can design the turbine exhaust as a lateral exhaust system. The condenser is also positioned on the same or adjacent floor as the turbine (with a height difference of approximately 6 meters), located beside the turbine (lateral exhaust). This significantly reduces plant height and saves on construction costs.

[0003] During operation, the condenser operates under a high vacuum. Because the condenser is connected to the low-pressure cylinder, a significant vacuum thrust is generated, acting on both the condenser and the low-pressure cylinder. Since the condenser is located on the side of the turbine, the vacuum force is a horizontal thrust. The low-pressure cylinder's ability to withstand horizontal thrust is much less than its ability to withstand vertical thrust. Therefore, the design of a side-exhaust turbine requires careful consideration of balancing the horizontal vacuum thrust. There are two ways to balance the vacuum thrust in a side-exhaust turbine unit: one is to use a rigid connection between the condenser and the low-pressure cylinder; the other is to use a vacuum-force self-balancing expansion joint connection between the condenser and the low-pressure cylinder. Regardless of the connection method used, during operation, the condenser will expand and slide horizontally towards the condenser with the low-pressure cylinder exhaust port as the dead point. The resulting frictional reaction force will act on the low-pressure cylinder. Although this frictional reaction force is much smaller than the vacuum thrust, it will still adversely affect the safe operation of the low-pressure cylinder. This is especially true as the capacity of units using lateral exhaust increases, leading to larger condenser sizes and weights. Consequently, the frictional reaction force generated by the condenser's expansion and sliding also increases, exceeding the allowable thrust value of the low-pressure cylinder. Furthermore, due to the increased size and weight of the entire condenser, traditional condenser support structures will be unable to guarantee the overall stability of the condenser.

[0004] Therefore, a new type of condenser support mechanism is needed to solve the problems of large sliding friction reaction force and low overall stability of large side-exhaust condensers. Utility Model Content

[0005] The purpose of this utility model is to provide a support structure and a condenser suitable for large side-exhaust steam condensers, which can effectively solve the problem of large sliding friction reaction force in large side-exhaust steam condensers and improve the overall stability of large side-exhaust steam condensers.

[0006] The technical solution adopted in this utility model is as follows: A support structure suitable for large-scale side-exhaust condensers, comprising multiple multi-ball supports, limiting supports, and spring supports; wherein:

[0007] A multi-ball support is used to support the shell of a condenser. It includes a multi-ball base and a multi-ball support block. The multi-ball support block and the multi-ball base are slidably connected, and there are multiple steel balls between the multi-ball support block and the multi-ball base.

[0008] A limiting support is used to support the shell and throat of a condenser. It includes a slide rail and a slider support, wherein the slider support is slidably connected to the slider.

[0009] A spring support for supporting the throat of a condenser includes a spring base and a spring support block, wherein multiple compression springs are located between the spring support block and the spring base.

[0010] Furthermore, the multi-ball supports are evenly arranged on both sides of the shell, and the distribution of the multi-ball supports is symmetrical about the mid-plane of the shell.

[0011] Furthermore, the multi-ball support also has multiple hooks, which are evenly distributed on both sides of the multi-ball support perpendicular to the sliding direction of the multi-ball support block. One end of the hook is attached to the multi-ball support block, and the other end of the hook is attached to the multi-ball base.

[0012] Furthermore, the limiting supports are arranged along the mid-plane of the condenser, and the limiting supports are spaced apart from each other.

[0013] Furthermore, the spring supports are evenly arranged on both sides of the throat, and the distribution of the spring supports is symmetrical about the midline of the throat.

[0014] Furthermore, a plurality of lifting bolts are vertically arranged on the spring base, and the lifting bolts are located within the projected area of ​​the spring support block projected onto the spring base.

[0015] Furthermore, the lifting bolt includes a threaded tube with internal threads and a screw rod threadedly connected to the threaded tube, with a rotating cap fixed to the end of the screw rod.

[0016] Furthermore, the lifting bolts are evenly distributed within the projected area of ​​the spring support block projected onto the spring base.

[0017] Furthermore, the compression springs are evenly distributed within the projected area of ​​the spring support block projected onto the spring base.

[0018] A steam exhaust condenser includes a condenser body having a shell and a throat, and a support structure suitable for large side-exhaust condensers. The multi-ball support is arranged such that the sliding direction of the multi-ball support block is parallel to the mid-plane of the shell and fixed to the shell. The limiting support is arranged such that the sliding direction of the slider support is parallel to the mid-plane of the shell and fixed to the condenser body.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0020] 1. This utility model utilizes spherical supports to support the shell of the condenser. Taking advantage of the low coefficient of sliding friction of the spherical supports, multiple spheres are made into sliding supports for the condenser to support its weight. This allows the condenser to expand and slide freely in the horizontal direction during operation, generating very small additional frictional loads. At the same time, by adding hook structures to the multi-spherical supports, it can withstand the overturning moment generated when the condenser is subjected to external pipeline thrust or seismic loads.

[0021] 2. This utility model utilizes a limiting support to support the shell and throat of the condenser, which can restrict the condenser from sliding along a certain track in the horizontal direction, while bearing the horizontal load perpendicular to the sliding direction, and preventing the condenser from twisting horizontally.

[0022] 3. This utility model utilizes spring supports to support the throat of the condenser, which can effectively prevent the throat support from coming loose during condenser operation. At the same time, the addition of a lifting bolt structure limits the minimum height of the condenser throat, keeping it at the initial installation height while also providing support during side tipping and facilitating the positioning of the spring supports during installation. Attached Figure Description

[0023] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram showing the distribution of the multi-ball support, limiting support, and spring support disclosed in this utility model;

[0025] Figure 2 This is a schematic diagram of a multi-sphere support structure;

[0026] Figure 3 This is a schematic diagram of the limiting support structure;

[0027] Figure 4 This is a schematic diagram of the spring support structure;

[0028] Figure 5 This is a front view of the exhaust condenser disclosed in this utility model;

[0029] Figure 6 This is a side view of the exhaust condenser disclosed in this utility model;

[0030] The markings in the diagram are: 1-Multi-ball support; 11-Multi-ball base; 12-Steel ball; 13-Multi-ball support block; 14-Hook; 2-Limit support; 21-Slide rail; 22-Slider support; 3-Spring support; 31-Spring base; 32-Compression spring; 33-Spring support block; 34-Pulling bolt; 341-Screw tube; 342-Screw; 4-Housing; 5-Throat. Detailed Implementation

[0031] In the description of this specification, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this specification and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this specification.

[0032] Furthermore, the use of terms such as "horizontal" or "vertical" in this specification does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this specification, it should also be noted that, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” should be interpreted broadly. For example, a link can be a fixed link, a detachable link, or an integral link; it can be a mechanical link or an electrical link; it can be a direct link or an indirect link through an intermediate medium; it can be a connection within two components.

[0034] Example 1

[0035] During operation, the condenser will use the exhaust port of the low-pressure cylinder of the steam turbine as the dead point, and face towards the tail of the condenser (i.e., Figure 1 , Figure 5 Slide in the X direction (in the middle), for this reason, as Figures 1-6 As shown, a support structure suitable for large-scale side-exhaust condensers is proposed, including multiple multi-ball supports 1, limiting supports 2, and spring supports 3; wherein:

[0036] The multi-ball support 1 is used to support the shell 4 of the condenser. It includes a multi-ball base 11 and a multi-ball support block 13. The multi-ball support block 13 is slidably connected to the multi-ball base 11, and there are multiple steel balls 12 between the multi-ball support block 13 and the multi-ball base 11.

[0037] The limiting support 2 is used to support the shell 4 and throat 5 of the condenser. It includes a slide rail 21 and a slider support 22, wherein the slider support 22 is slidably connected to the slider.

[0038] The spring support 3 is used to support the throat 5 of the condenser. It includes a spring base 31 and a spring support block 33, and there are multiple compression springs 32 between the spring support block 33 and the spring base 31.

[0039] Specifically, the multi-ball support 1 is supported by steel balls 12. The steel balls 12 have a very small coefficient of sliding friction, theoretically not exceeding 0.01. The multi-ball support 1 is arranged at the bottom of the condenser shell 4 to support the weight of the condenser, so that the condenser generates a very small frictional reaction force when it expands and slides during operation, which allows the condenser to expand and slide freely in the horizontal direction during operation.

[0040] When the condenser expands during operation, the slider support 22 on the limit support 2 slides along the slide rail 21, so that the expansion of the condenser will not interfere. At the same time, due to the restriction of the slider support 22 by the slide rail 21, the swing of the condenser center in the Y direction is limited and the thrust of the external interface in the Y direction is also limited. It can also effectively prevent the condenser from undergoing horizontal torsion under external load.

[0041] Due to the structural requirements of the condenser, the side plate of the condenser throat 5 is an inclined plate at a certain angle, which is not convenient for support. Usually, shaft-type and side-exhaust condensers do not have supports at the throat 5. However, as the capacity of side-exhaust turbine units increases, the size and weight of the condensers also increase. Without support at the condenser throat 5, the throat 5 will be completely cantilevered, which does not utilize the overall stability of the condenser. At the same time, because there is a height difference between the condenser throat 5 and the shell 4, the condenser will expand upward as a whole during operation. Using a conventional support structure, the support of the condenser throat 5 is prone to slippage during operation, failing to provide support. To address this issue, the spring support 3 effectively solves the problem. The compression spring 32 of the spring support 3 serves as support. The compression spring 32 is always in a compressed state, thus the compression spring 32 provides an elastic force to the throat 5 through the spring support block 33. This elastic force acts as a supporting force, effectively improving the stability of the throat 5.

[0042] In summary, by using the multi-ball support 1, the limiting support 2, and the spring support 3 to support the condenser, the problem of large sliding friction reaction force in large side-exhaust condensers can be effectively solved, and the overall stability of large side-exhaust condensers can be improved.

[0043] Example 2

[0044] Based on Example 1, further feasible implementation methods are proposed.

[0045] In one feasible implementation, the multi-ball supports 1 are evenly arranged on both sides of the housing 4, and the distribution of the multi-ball supports 1 is symmetrical about the mid-plane of the housing 4, so that both sides of the housing 4 can be subjected to the same support force, avoiding tilting due to uneven support force.

[0046] In one feasible implementation, the multi-ball support 1 also has multiple hooks 14, which are evenly distributed on both sides of the multi-ball support 1 perpendicular to the sliding direction of the multi-ball support block 13. One end of the hook 14 is attached to the multi-ball support block 13, and the other end of the hook 14 is attached to the multi-ball base 11. The multi-ball support block 13 is fixedly connected to the housing 4, and the hook 14 locks the multi-ball support block 13. In fact, the housing 4 is pulled to the multi-ball base 11 by the hook 14, so that in addition to bearing the vertical downward gravity load of the condenser, the sliding support can also bear the upward load when the condenser overturns due to factors such as earthquakes or external thrust, which can effectively prevent the condenser from overturning, that is, avoid overturning in the Y direction.

[0047] In one feasible implementation, the limiting supports 2 are evenly arranged along the mid-plane of the condenser, and the limiting supports 2 are spaced apart, so that the supporting force on the condenser as a whole in the X direction is evenly distributed.

[0048] In one feasible implementation, the spring supports 3 are evenly arranged on both sides of the throat 5, and the distribution of the spring supports 3 is symmetrical about the midline of the throat 5, so that both sides of the throat 5 can be subjected to the same support force, avoiding tilting due to uneven support force.

[0049] In one feasible implementation, a plurality of lifting bolts 34 are vertically arranged on the spring base 31. The lifting bolts 34 are located within the projected area of ​​the spring support block 33 projected onto the spring base 31. Specifically, the structure of the lifting bolt 34 includes a threaded tube 341 and a screw 342 threadedly connected to the threaded tube 341. A rotating cap is fixed to the end of the screw 342. By turning the rotating cap, the position of the threaded connection between the screw 342 and the threaded tube 341 can be adjusted, thereby adjusting the height of the rotating cap and limiting the maximum degree of compression of the compression spring 32, that is, limiting the lowest position of the throat 5. On the one hand, this avoids excessive sinking of the throat 5 in the Z direction. On the other hand, in the event of an accident, such as an earthquake, when the condenser tends to overturn, after the spring is compressed to a certain extent, the load on the throat 5 acts on the lifting bolt 34, which can prevent the spring from being over-compressed and effectively prevent the condenser from overturning.

[0050] In one feasible implementation, the lifting bolts 34 are evenly distributed within the projected area of ​​the spring support block 33 projected onto the spring base 31, so that when the lifting bolts 34 apply a supporting force to the spring support block 33, the supporting force is evenly distributed, thereby improving stability.

[0051] In one feasible implementation, the compression springs 32 are evenly distributed within the projected area of ​​the spring support block 33 projected onto the spring base 31, so that when the compression springs 32 apply a supporting force to the spring support block 33, the supporting force is evenly distributed, thereby improving stability.

[0052] Example 3

[0053] A steam exhaust condenser includes a condenser body having a shell 4 and a throat 5, and a support structure suitable for large-scale side-exhaust condensers as described in any of the embodiments 1-2. The multi-ball support 1 is fixed to the shell 4 with the sliding direction of the multi-ball support block 13 parallel to the mid-plane of the shell 4; the limiting support 2 is fixed to the condenser body with the sliding direction of the slider support 22 parallel to the mid-plane of the shell 4; and the spring support 3 is arranged in the throat 5. This steam exhaust condenser has low sliding friction reaction force and high overall stability.

[0054] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A support structure suitable for large-scale side-exhaust condensers, characterized in that: It includes multiple multi-ball bearings (1), limiting bearings (2), and spring bearings (3); wherein: A multi-ball support (1) is used to support the shell (4) of the condenser. It includes a multi-ball base (11) and a multi-ball support block (13). The multi-ball support block (13) is slidably connected to the multi-ball base (11), and there are multiple steel balls (12) between the multi-ball support block (13) and the multi-ball base (11). The limiting support (2) is used to support the shell (4) and throat (5) of the condenser. It includes a slide rail (21) and a slider support (22), which is slidably connected to the slider. A spring support (3) is used to support the throat (5) of the condenser. It includes a spring base (31) and a spring support block (33), with a plurality of compression springs (32) between the spring support block (33) and the spring base (31).

2. The support structure according to claim 1, characterized in that: The multi-sphere supports (1) are evenly arranged on both sides of the shell (4), and the distribution of the multi-sphere supports (1) is symmetrical about the mid-plane of the shell (4).

3. The support structure according to claim 1, characterized in that: The multi-ball support (1) also has multiple hooks (14), which are evenly distributed on both sides of the multi-ball support (1) perpendicular to the sliding direction of the multi-ball support block (13). One end of the hook (14) is attached to the multi-ball support block (13), and the other end of the hook (14) is attached to the multi-ball base (11).

4. The support structure according to claim 1, characterized in that: The limiting supports (2) are evenly arranged along the mid-plane of the condenser, and the limiting supports (2) are spaced apart.

5. The support structure according to claim 1, characterized in that: The spring supports (3) are evenly arranged on both sides of the throat (5), and the distribution of the spring supports (3) is symmetrical about the midline of the throat (5).

6. The support structure according to claim 1, characterized in that: The spring base (31) is vertically arranged with a plurality of lifting bolts (34), which are located within the projected area of ​​the spring support block (33) projected onto the spring base (31).

7. The support structure according to claim 6, characterized in that: The lifting bolt (34) includes a threaded tube (341) with internal threads and a screw rod (342) threadedly connected to the threaded tube (341), with a rotating cap fixed to the end of the screw rod (342).

8. The support structure according to claim 6, characterized in that: The lifting bolts (34) are evenly distributed within the projected area of ​​the spring support block (33) projected onto the spring base (31).

9. The support structure according to claim 1, characterized in that: The compression springs (32) are evenly distributed within the projected area of ​​the spring support block (33) projected onto the spring base (31).

10. A steam exhaust condenser, characterized in that: The condenser body includes a shell (4) and a throat (5), and a support structure for a large side-exhaust condenser as described in any one of claims 1-9. The multi-ball support (1) is fixed to the shell (4) with the sliding direction of the multi-ball support block (13) parallel to the mid-plane of the shell (4). The limiting support (2) is fixed to the condenser body with the sliding direction of the slider support (22) parallel to the mid-plane of the shell (4).

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