Supporting structure of large side exhaust condenser

Abstract

The utility model relates to the technical field of steam turbine condensers, and provides a supporting structure of a large side exhaust condenser, which comprises a condenser and a foundation, a fixed support, a guide support, a sliding support and a tensile mechanism are arranged on the foundation, and the fixed support is fixed with a bottom plate, close to a steam inlet side, of the condenser. The guide support comprises a first support used for guiding the condenser to slide in the length direction of the condenser and a second support used for guiding the condenser to slide in the width direction of the condenser, the multiple sliding supports are symmetrically distributed with respect to the central axis of the condenser in the length direction, and the tensile mechanisms are connected to the four corners of a bottom plate of the condenser. Through the combination of the fixed support, the guide support, the sliding support and the tensile mechanism, the stability and the safety of the supporting structure are enhanced, the supporting structure adapts to various working condition changes, the bearing capacity and the non-deformability of the structure are improved, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine condensers, in particular to a supporting structure of a large side discharge condenser. Background Art

[0002] A condenser is a heat exchanger used to condense steam discharged from a steam turbine into water. Large side-exhaust steam turbines are typically equipped with a shell-and-tube condenser, installed on the side of the steam turbine in H-class gas-steam combined cycle units. Its primary function is to condense exhaust steam from the low-pressure cylinder into water and maintain a certain vacuum at the exhaust port.

[0003] Because the condenser is laterally aligned with the turbine, the turbine's low-pressure cylinder is typically supported by springs, while the condenser is rigidly welded to the low-pressure cylinder. During operation, the operating characteristics of the spring supports can induce a tipping moment, while seismic loads can cause a tilting moment and additional angular displacement. Furthermore, thermal expansion can exert significant longitudinal thrust on the condenser. This, combined with the lateral and longitudinal thermal displacements of the condenser itself caused by thermal expansion, can severely impact the safe operation of the unit. Utility Model Content

[0004] The purpose of this utility model is to provide a support structure for a large side discharge condenser, solve the above technical problems, enhance the stability and safety of the support structure, adapt to various working conditions, improve the bearing capacity and anti-deformation ability of the structure, and extend the service life of the equipment.

[0005] The utility model is realized through the following technical solutions: a supporting structure of a large side-exhaust condenser, including a condenser and a foundation, a fixed support, a guide support, a sliding support and a tensile mechanism are arranged on the foundation, the fixed support is fixed to the bottom plate of the condenser close to the steam inlet side, the guide support includes a first support for guiding the condenser to slide along its length direction and a second support for guiding the condenser to slide along its width direction, a plurality of sliding supports are symmetrically arranged about the central axis in the length direction of the condenser, and the tensile mechanism is connected to the four corners of the bottom plate of the condenser.

[0006] Furthermore, the sliding support includes an upper support and a lower support with spherical fit, the upper support is connected to the condenser bottom plate, and the lower support is fixed to the foundation.

[0007] Furthermore, it includes a steam turbine, the steam turbine includes a low-pressure cylinder, and the fixed support is arranged on the exhaust center line of the low-pressure cylinder.

[0008] Furthermore, the first support is arranged on both sides of the fixed support along the length direction of the condenser, and the second support is arranged on one side of the fixed support along the width direction of the condenser.

[0009] Furthermore, the first support and the second support both include a chute seat and a slide rod seat, the chute seat is fixed to the foundation, the slide rod seat is connected to the condenser bottom plate, and the slide rod seat is limitedly slidably fitted in the chute seat.

[0010] Furthermore, the tensile mechanism includes a plurality of screw rods pre-buried in the foundation.

[0011] The utility model has at least the following advantages and beneficial effects:

[0012] (1) The combination of fixed supports, guide supports, sliding supports and tensile mechanisms enhances the stability and safety of the supporting structure, adapts to various working conditions, improves the bearing capacity and anti-deformation ability of the structure, and extends the service life of the equipment;

[0013] (2) The support structure is connected to the four corners of the condenser bottom plate through a tensile structure, effectively solving the problem of poor absorption and compensation of the overturning moment transmitted from the turbine, the overturning moment caused by seismic loads, and the corresponding additional angular displacement by the support structure;

[0014] (3) The upper and lower supports with spherical fit are easy to install and facilitate the free movement of the condenser during thermal expansion or thermal contraction. They evenly bear the vertical gravity load caused by the weight of the condenser, compensate for the longitudinal thermal displacement of the condenser turbine low-pressure cylinder due to thermal expansion, and the lateral and longitudinal thermal displacement caused by the thermal expansion of the condenser body, thereby improving the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a front view of the support structure and condenser assembly of a large side discharge condenser provided by the utility model;

[0017] Figure 2 A side view of the support structure and condenser assembly of a large side discharge condenser provided by the utility model;

[0018] Figure 3 A top view of a supporting structure of a large side exhaust condenser provided by the utility model;

[0019] Figure 4 A side view of a supporting structure of a large side exhaust condenser provided by the utility model;

[0020] Figure 5 This is a structural schematic diagram of a sliding support in a supporting structure of a large side discharge condenser provided by the utility model;

[0021] Figure 6 This is a structural schematic diagram of a fixed support in a supporting structure of a large side exhaust condenser provided by the utility model;

[0022] Figure 7 This is a structural schematic diagram of a guide support in a support structure of a large side exhaust condenser provided by the utility model;

[0023] Figure 8 This is a structural schematic diagram of a tensile mechanism in a supporting structure of a large side exhaust condenser provided by the utility model;

[0024] Icon: 1- condenser, 2- foundation, 3- fixed support, 4- guide support, 41- first support, 42- second support, 401- slide seat, 402- slide rod seat, 5- sliding support, 51- upper support, 52- lower support, 6- tensile mechanism, 61- screw. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0027] Example

[0028] like Figure 1-8As shown, in this embodiment, a supporting structure of a large side-exhaust condenser is mainly disclosed, including a condenser 1 and a foundation 2, on which a fixed support 3, a guide support 4, a sliding support 5 and a tensioning mechanism 6 are arranged. The fixed support 3 is fixed to the bottom plate of the condenser 1 near the steam inlet side, the guide support 4 includes a first support 41 for guiding the condenser 1 to slide along its length direction and a second support 42 for guiding the condenser 1 to slide along its width direction, a plurality of sliding supports 5 are symmetrically arranged along the central axis of the length direction of the condenser 1, and the tensioning mechanism 6 is connected to the four corners of the bottom plate of the condenser 1; it should be noted that the overall supporting mechanism forms two rows arranged along the width direction of the condenser 1, and the fixed support 3 serves as a thermal expansion deadlock for the entire condenser 1 Point, the design of the first support 41 and the second support 42 enables the condenser 1 to slide in the length and width directions, ensuring the smooth occurrence of thermal expansion during operation and reducing the stress concentration caused by structural limitations. The tensile structure is arranged at the four corners of the condenser 1 to constrain the condenser 1 in the vertical direction, effectively solving the problem of unsatisfactory absorption and compensation of the overturning moment transmitted from the turbine, the overturning moment caused by the seismic load and the corresponding additional angular displacement by the supporting mechanism; through the combination of the fixed support 3, the guide support 4, the sliding support 5 and the tensile mechanism 6, the flexibility and stability of the supporting structure are enhanced, adapting to various working conditions, improving the bearing capacity and anti-deformation ability of the structure, and extending the service life of the equipment.

[0029] Furthermore, in specific implementation, Figure 5 As shown, the above-mentioned sliding support 5 provided in the embodiment of the present invention includes an upper support 51 and a lower support 52 with a spherical fit, the upper support 51 is connected to the bottom plate of the condenser 1, and the lower support 52 is fixed to the foundation 2; since the upper support 51 and the lower support 52 adopt a spherical fit, the installation requirements are low in precision, which is convenient for installation, and facilitates the free movement of the condenser 1 during thermal expansion or thermal contraction, thereby reducing the stress and deformation caused by temperature changes and extending the service life of the equipment. At the same time, the sliding support 5 has the function of moving and resetting; the multiple sliding supports 5 arranged under the condenser 1 evenly bear the vertical gravity load caused by the self-weight of the condenser 1; compensate for the longitudinal thermal displacement of the low-pressure cylinder of the turbine due to thermal expansion, compensate for the lateral and longitudinal thermal displacement caused by the thermal expansion of the condenser 1 body, and improve the stability of the structure.

[0030] Furthermore, in the specific implementation, the above-mentioned embodiment provided in the present invention includes a steam turbine, the steam turbine includes a low-pressure cylinder, and the fixed support 3 is arranged on the exhaust center line of the low-pressure cylinder; it should be noted that the low-pressure cylinder, as a part of the steam turbine, is usually the last stage of the steam power cycle process of the steam turbine, which is used to further expand the steam to achieve a lower exhaust pressure. In the low-pressure cylinder, the steam expands, and the temperature and pressure decrease. After entering the condenser 1, the steam further loses heat and turns into water. Accordingly, the pressure and temperature in the system also change; and arranging the fixed support 3 on the exhaust center line of the low-pressure cylinder can reduce unnecessary torque and bending moment, effectively reduce stress concentration, prevent fatigue damage, and further improve the stability of the structure.

[0031] Furthermore, in specific implementation, Figure 3 As shown, the first support 41 provided in the embodiment of the present invention is arranged on both sides of the fixed support 3 along the length direction of the condenser 1, and the second support 42 is arranged on one side of the fixed support 3 along the width direction of the condenser 1; the horizontal and vertical thermal expansion displacement of the condenser 1 is realized.

[0032] Furthermore, in specific implementation, Figure 7 As shown, the above-mentioned first support 41 and the second support 42 provided in the embodiment of the utility model both include a slide groove seat 401 and a slide rod seat 402. The slide groove seat 401 is fixed to the foundation 2, and the slide rod seat 402 is connected to the bottom plate of the condenser 1. The slide rod seat 402 is limited and slidably fitted in the slide groove seat 401, ensuring that the condenser 1 slides along a predetermined trajectory during thermal expansion, avoiding structural instability or damage caused by deviation, and ensuring its operational safety and reliability.

[0033] Furthermore, in specific implementation, Figure 8 As shown, the above-mentioned tensile mechanism 6 provided in the embodiment of the utility model includes a plurality of screws 61 pre-buried in the foundation 2. The screws 61 pre-buried in the foundation 2 provide additional stability, which can prevent the condenser 1 from tilting or displacing during operation, thereby increasing the overall rigidity and stability of the structure and improving the wind resistance and earthquake resistance.

[0034] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A support structure for a large side discharge condenser, comprising a condenser (1) and a foundation (2), characterized in that: A fixed support (3), a guide support (4), a sliding support (5) and a tensile mechanism (6) are provided on the foundation (2); the fixed support (3) is fixed to the bottom plate of the condenser (1) close to the steam inlet side; the guide support (4) includes a first support (41) for guiding the condenser (1) to slide along its length direction and a second support (42) for guiding the condenser (1) to slide along its width direction; a plurality of sliding supports (5) are symmetrically arranged about the central axis of the length direction of the condenser (1); and the tensile mechanism (6) is connected to the four corners of the bottom plate of the condenser (1).

2. The support structure of a large side exhaust condenser according to claim 1, characterized in that: The sliding support (5) comprises an upper support (51) and a lower support (52) with spherical fit, the upper support (51) being connected to the bottom plate of the condenser (1), and the lower support (52) being fixed to the foundation (2).

3. The support structure of a large side exhaust condenser according to claim 1, characterized in that: The steam turbine comprises a low-pressure cylinder, and the fixed support (3) is arranged on the exhaust center line of the low-pressure cylinder.

4. The support structure of a large side exhaust condenser according to claim 1, characterized in that: The first support (41) is arranged on both sides of the fixed support (3) along the length direction of the condenser (1), and the second support (42) is arranged on one side of the fixed support (3) along the width direction of the condenser (1).

5. The support structure of a large side exhaust condenser according to claim 1, characterized in that: The first support (41) and the second support (42) both include a chute seat (401) and a slide rod seat (402), wherein the chute seat (401) is fixed to the foundation (2), the slide rod seat (402) is connected to the bottom plate of the condenser (1), and the slide rod seat (402) is limitedly slidably fitted in the chute seat (401).

6. The support structure of a large side exhaust condenser according to claim 1, characterized in that: The tensile mechanism (6) comprises a plurality of screw rods (61) pre-buried in the foundation (2).

Images