阅读说明：本技术 一种直接空冷系统冷却风导流装置的支撑结构 (Supporting structure of cooling air guiding device of direct air cooling system ) 是由 张伟 杨志刚 阴万清 于 2020-12-03 设计创作，主要内容包括：本发明提供了一种直接空冷系统冷却风导流装置的支撑结构,涉及火力发电技术领域,能够保证导流板在各种工况下均稳定牢固,且达到优化单元内流场分布、降低背压的效果；该支撑结构包括两组第一支撑架、两组第二支撑架和两组第三支撑架；风机桥架结构的两侧分别设有所述第一支撑架、所述第二支撑架和所述第三支撑架；所述第一支撑架和所述第二支撑架均为单片导流板支撑架；所述第三支撑架为多片导流板复合支撑架；所述第二支撑架设于所述风机桥架结构某一侧的中间,所述第一支撑架和所述第三支撑架分设在所述第二支撑架的两侧。本发明提供的技术方案适用于导流板布置的过程中。(The invention provides a supporting structure of a cooling air flow guiding device of a direct air cooling system, which relates to the technical field of thermal power generation, can ensure that a flow guiding plate is stable and firm under various working conditions, and achieves the effects of optimizing flow field distribution in a unit and reducing back pressure; the supporting structure comprises two groups of first supporting frames, two groups of second supporting frames and two groups of third supporting frames; the first support frame, the second support frame and the third support frame are respectively arranged on two sides of the fan bridge structure; the first support frame and the second support frame are both single-piece guide plate support frames; the third support frame is a multi-piece guide plate composite support frame; the second support frame is arranged in the middle of one side of the fan bridge structure, and the first support frame and the third support frame are respectively arranged on two sides of the second support frame. The technical scheme provided by the invention is suitable for the arrangement process of the guide plate.)

1. A supporting structure of a cooling air flow guide device of a direct air cooling system is characterized by comprising two groups of first supporting frames, two groups of second supporting frames and two groups of third supporting frames;

a group of first support frame, a group of second support frame and a group of third support frame are respectively arranged on two sides of the fan bridge structure;

the first support frame and the second support frame are both single-piece guide plate support frames;

the third support frame is a multi-piece guide plate composite support frame.

2. The supporting structure of the cooling air flow guiding device of the direct air cooling system according to claim 1, wherein the second supporting frame is disposed in the middle of one side of the fan bridge structure, and the first supporting frame and the third supporting frame are disposed on two sides of the second supporting frame.

3. The support structure for the cooling air flow guiding device of the direct air cooling system according to claim 2, wherein the length of the second support frame is greater than the length of the first support frame.

4. The support structure for the cooling wind deflector of the direct air cooling system according to claim 3, wherein the cantilever of the first support frame is 1.3 m long; the cantilever of the second support frame is 2.1 meters long;

the cantilever of the third support frame is 1.4 meters long and is a composite support frame with 4 guide plates.

5. The support structure for the cooling wind deflector of the direct air-cooling system according to claim 1, wherein the single deflector support frame is a ladder truss support structure;

the trapezoidal truss type supporting structure comprises an upper chord member, a lower chord member, two vertical web members, a plate-shaped inclined support and a plurality of reinforcing ribs;

two vertical web members are arranged between the upper chord and the lower chord in parallel; one end of the reinforcing rib is fixedly connected with the upper chord or the lower chord, and the other end of the reinforcing rib is fixedly connected with the plate-shaped inclined support; the upper chord and the lower chord are respectively provided with a support, the two supports are positioned on the same plane with the upper chord or the lower chord, and the supports and the upper chord and the lower chord are respectively connected with a cross beam of the fan bridge structure.

6. The support structure for the cooling air deflector of the direct air-cooling system according to claim 5, wherein the reinforcing ribs are made of an elongated steel plate; the upper chord, the lower chord and the vertical web members are square tubes; the plate-shaped inclined supports are square steel plates.

7. The supporting structure of the cooling air flow guiding device of the direct air cooling system according to claim 5, wherein a first oblique reinforcing rib is arranged between the two vertical web members; and a second oblique reinforcing rib is arranged between the tail end of the upper chord or the lower chord and the vertical web member.

8. The supporting structure of the cooling air flow guiding device of the direct air cooling system according to claim 5, wherein a third reinforcing rib is arranged between the tail end of the upper chord and the tail end of the lower chord, and the third reinforcing rib is connected with the cross beam of the fan bridge structure.

9. The supporting structure of the cooling air guiding device of the direct air-cooling system according to claim 1, wherein the third supporting frame is a two-truss triangular truss type supporting structure.

10. A direct air cooling tower, characterized in that a cooling air guiding device is arranged at a fan bridge structure of the direct air cooling tower, and the cooling air guiding device is fixed by the supporting structure of any one of claims 1 to 9.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of thermal power generation, in particular to a supporting structure of a cooling air flow guide device of a direct air cooling system.

[ background of the invention ]

In recent years, due to the rapid development of the economy of China and the continuous progress of the thermal power generation technology, the installed capacity of the thermal power plant is rapidly increased, however, along with the continuous operation and use of the thermal power plant, the heat exchange capacity of a condenser of a direct air cooling unit is reduced due to the aging of radiator equipment and the blockage of sundries in the air, the heat dissipation area is relatively insufficient, so that the back pressure is increased when the unit operates, and the energy consumption level is directly and greatly increased.

When backpressure of an existing direct air-cooling thermal power generating unit in China rises, the heat dissipation capacity of the air-cooling condenser is enhanced mainly by frequently flushing the air-cooling condenser, spraying the inside of the air-cooling unit and the like, and the running backpressure of the unit is reduced. However, both of these two methods are to wash and spray the air-cooled condenser with high-pressure and frequent high-quality demineralized water to achieve the effect of reducing the back pressure, so that the maintenance cost is greatly increased, and the service life of the air-cooled finned tube bundle is seriously affected.

Through continuous research and calculation, the aim of reducing the back pressure of the unit is achieved by adding the flow guide device in the fan unit of the air cooling unit, optimizing the flow field in the unit, enhancing the heat exchange of the tube bundle. However, the guide vane has a large and thin area, and how to mount the guide vanes with different shapes at a required position is a technical problem in the technical field at present.

Therefore, there is a need to develop a supporting structure of a cooling wind deflector of a direct air cooling system to overcome the shortcomings of the prior art, so as to solve or alleviate one or more of the above problems.

[ summary of the invention ]

In view of the above, the invention provides a support structure for a cooling air flow guiding device of a direct air cooling system, which can ensure that a flow guiding plate is stable and firm under various working conditions, achieve the effects of optimizing flow field distribution in a unit and reducing back pressure, and simultaneously reduce damage of high-pressure washing to a fin tube bundle and reduce maintenance cost.

On one hand, the invention provides a supporting structure of a cooling air flow guiding device of a direct air cooling system, which is characterized by comprising two groups of first supporting frames, two groups of second supporting frames and two groups of third supporting frames;

a group of first support frame, a group of second support frame and a group of third support frame are respectively arranged on two sides of the fan bridge structure;

the first support frame and the second support frame are both single-piece guide plate support frames;

the third support frame is a multi-piece guide plate composite support frame.

The above aspect and any possible implementation manner further provide an implementation manner, where the second support frame is disposed in the middle of a certain side of the fan bridge structure, and the first support frame and the third support frame are disposed on two sides of the second support frame, respectively.

The above aspect and any possible implementation further provide an implementation in which the second support frame has a length greater than a length of the first support frame.

The above aspects and any possible implementations further provide an implementation in which the cantilever of the first support frame is 1.3 meters long; the cantilever of the second support frame is 2.1 meters long;

the cantilever of the third support frame is 1.4 meters long and is a composite support frame with 4 guide plates.

The above aspects and any possible implementations further provide an implementation in which the monolithic baffle support frame is a trapezoidal truss support structure;

the trapezoidal truss type supporting structure comprises an upper chord member, a lower chord member, two vertical web members, a plate-shaped inclined support and a plurality of reinforcing ribs;

two vertical web members are arranged between the upper chord and the lower chord in parallel; one end of the reinforcing rib is fixedly connected with the upper chord or the lower chord, and the other end of the reinforcing rib is fixedly connected with the plate-shaped inclined support; the upper chord and the lower chord are respectively provided with a support, the two supports are positioned on the same plane with the upper chord or the lower chord, and the supports and the upper chord and the lower chord are respectively connected with a cross beam of the fan bridge structure.

The above aspect and any possible implementation further provide an implementation in which the stiffener is an elongated steel plate; the upper chord, the lower chord and the vertical web members are square tubes; the plate-shaped inclined supports are square steel plates.

In accordance with the above aspect and any one of the possible implementations, there is further provided an implementation in which a first diagonal reinforcement rib is provided between two of the vertical web members; and a second oblique reinforcing rib is arranged between the tail end of the upper chord or the lower chord and the vertical web member.

The above aspect and any possible implementation manner further provide an implementation manner, where a third reinforcing rib is disposed between the tail end of the upper chord and the tail end of the lower chord, and the third reinforcing rib is connected to the cross beam of the fan bridge structure.

In accordance with the above-described aspect and any possible implementation manner, there is further provided an implementation manner that the third support frame is a two-truss triangular truss-type support structure.

In accordance with the above-described aspects and any possible implementation manner, there is further provided an implementation manner, where the two triangular truss-type support structures include three-sided rod structures, specifically, a first right-angled side structure, a second right-angled side structure, and a hypotenuse structure;

the first right-angle side structure comprises two upper truss transverse rods and two upper truss vertical rods, wherein the two upper truss transverse rods are fixedly connected into a rectangle and arranged in parallel, the outer ends of the upper truss transverse rods are connected with the corresponding plate-shaped inclined supports, and the inner ends of the upper truss transverse rods are connected with a cross beam of the fan bridge structure;

the second right-angle side structure comprises two vertical rods arranged in parallel, the upper ends of the vertical rods are fixedly connected with the corresponding upper truss transverse rods, and the lower ends of the vertical rods are connected with the inclined rods of the bevel edge structure;

the bevel edge structure comprises two parallel inclined rods; the upper ends of the diagonal rods are fixedly connected with corresponding upper truss transverse rods, and the other ends of the diagonal rods are fixedly connected with vertical rods and then connected with a cross beam of the fan bridge structure;

a lower truss structure is additionally arranged in the middle of the three-side rod structure and comprises two lower truss transverse rods arranged in parallel and two lower truss vertical rods arranged in parallel; one end of the lower horizontal beam is fixedly connected with the corresponding vertical rod, and the other end of the lower horizontal beam is fixedly connected with the corresponding plate-shaped inclined support after being connected with the corresponding inclined rod.

In the foregoing aspect and any one of the possible implementations, there is further provided an implementation in which the upper beam cross bar and the lower beam cross bar are provided at outer ends thereof with star-shaped reinforcing ribs, one end of each of the reinforcing ribs is fixedly connected to the corresponding cross bar, and the other end of each of the reinforcing ribs is fixedly connected to the inner surface of the corresponding plate-shaped diagonal support.

On the other hand, the invention provides a direct air cooling tower, which is characterized in that a cooling air guide device is arranged at a fan bridge structure of the direct air cooling tower and is fixed by any one of the support structures.

Compared with the prior art, the invention can obtain the following technical effects: this application guide plate bearing structure safe and reliable, simple to operate can guarantee that the guide plate is all stable firm under various operating modes to reach the flow field distribution in optimizing the unit, reduce the effect of backpressure, also reduced the high pressure simultaneously and washed the damage to finned tube bank, reduced the maintenance cost.

Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a general schematic view of a flow guide support structure in a fan unit according to an embodiment of the present invention;

fig. 2 is a schematic layout diagram of a supporting structure of a cooling air guiding device of a direct air cooling system according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a monolithic baffle support structure having a cantilever length of 1.3 meters in accordance with an embodiment of the present invention;

fig. 4 is a schematic diagram of a monolithic baffle support structure having a cantilever length of 2.1 meters in accordance with an embodiment of the present invention;

fig. 5 is a schematic view of a combined baffle support structure having a cantilever length of 1.4 meters in accordance with an embodiment of the present invention.

Wherein, in the figure:

1. a first support frame; 2. a second support frame; 3. a third support frame; 4. a fan bridge footpath; 5. a guardrail upper cross beam; 6. a guardrail lower cross beam; 7. an upper chord; 8. a lower chord; 9. a vertical web member; 10. a plate-shaped inclined support; 11. reinforcing ribs; 12. a rod support; 13. an upper truss horizontal rod; 14. a lower truss horizontal rod; 15. a vertical rod; 16. erecting vertical rods; 17. lower truss rods; 18. a diagonal rod.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Aiming at the problems in the prior art, the invention provides a support structure of a cooling air flow guide device of a direct air cooling system, which is used for realizing the installation and positioning of a flow guide sheet and achieving the purposes of improving and optimizing the flow field in a direct air cooling unit and reducing the running backpressure of a unit. The flow deflector mainly has two process arrangement forms of a single flow deflector and a combined flow deflector, the single flow deflector is supported by a steel structure truss, and the truss is fixed on a bridge frame of the direct air cooling fan; the combined guide vane is generally composed of a group of 4 guide vanes, and the 4 guide vanes are fixed on the direct air cooling fan bridge frame through a solid steel truss.

The utility model provides a direct air cooling system cooling air guiding device's bearing structure, a water conservancy diversion piece for fixing direct air cooling unit fan unit, this type of water conservancy diversion piece is in fan crane span structure bilateral symmetry arrangement, each three groups in every side, as shown in figure 2, fan crane span structure pavement 4's both sides are equipped with the guardrail respectively, the guardrail includes guardrail entablature 5 and guardrail bottom end rail 6, every side guardrail is equipped with first support frame 1 respectively, second support frame 2 and third support frame 3, three support frame is connected fixedly with guardrail entablature 5 and guardrail bottom end rail 6 respectively. The first support frame 1 and the second support frame 2 are both single-piece guide plate support structures, the whole lengths of the first support frame and the second support frame are different, and the second support frame is longer than the first support frame; the second support frame is arranged in the middle of the fan bridge, and the first support frame and the third support frame are respectively arranged on two sides of the second support frame.

The single-piece guide plate supporting structure (namely the first supporting frame 1 and the second supporting frame 2) adopts a square tube as an upper chord 7, a lower chord 8 and a vertical web member 9, and the plate-shaped inclined supports 10 adopt square steel plates to form a trapezoidal truss type supporting structure. The number of the upper chord 7 and the lower chord 8 is one, and two vertical web members 9 which are arranged in parallel are arranged between the upper chord and the lower chord for connection. To ensure the stability of the deflector, elongated steel plates are used as the reinforcing ribs 11, dividing the deflector into different cells. One end of the reinforcing rib 11 is fixedly connected with the upper chord 7 or the lower chord 8, and the other end is fixedly connected with the inner surface of the plate-shaped inclined support 10, and the connection mode can be welding. The reinforcing ribs on the same square pipe are integrally star-shaped, and each reinforcing rib is triangular with the connected square pipe (namely the upper chord 7 or the lower chord 8) and the plate-shaped inclined support. Both sides of the upper chord 7 and the lower chord 8 are provided with support rods 12, the support rods 12 and the upper chord or the lower chord are in the same plane, and the support rods 12 and the upper chord and the lower chord are respectively connected with the cross beam of the truss type railing to form a stable and reliable whole. Oblique reinforcing ribs can be arranged between the two vertical web members 9 and between the vertical web members and the tail ends of the upper chord member and the lower chord member, and two ends of each oblique reinforcing rib are fixedly connected with the upper chord member 7 and the lower chord member 8 respectively so as to further enhance the stability of the whole supporting structure. The oblique reinforcing ribs between the vertical web members and the tail ends of the upper chord member and the lower chord member (namely between the vertical web members far away from the plate-shaped inclined supports and one ends of the upper chord member and the lower chord member far away from the plate-shaped inclined supports) are connected with the cross beam of the railing together with the lower chord member and the upper chord member. When the oblique reinforcing ribs and the star-shaped reinforcing ribs have position conflict, the number of the star-shaped reinforcing ribs can be reduced. The connection mode in the single-chip guide plate support structure can be welding connection. The plate-shaped diagonal support 10 is used for connection with a deflector.

The combined guide plate supporting structure (namely the third supporting frame 3) adopts a square tube to form two triangular truss type supporting structures, and 4 guide plates which are arranged in parallel are fixed. The supporting structure mainly comprises a three-side rod structure, a beam rod structure is additionally arranged in the middle, and two trusses are connected through a square pipe at a square pipe beam. The 4 guide plates are respectively provided with a reinforcing rib plate to be connected with the upper and lower beams of the truss. As shown in fig. 5. The three-side rod structure comprises a first right-angle side structure, a second right-angle side structure and a hypotenuse structure, and the three side structures form an integral triangle of the third support frame. The first right-angle side structure is an upper truss structure and comprises two upper truss cross rods 13 arranged in parallel and two upper truss vertical rods 16 arranged in parallel, the four rod structures are fixedly connected into a rectangle, two ends of each upper truss cross rod 13 protrude, the outer ends of the upper truss cross rods 13 are connected with corresponding plate-shaped inclined supports 10, and the inner ends of the upper truss cross rods are fixedly connected with the upper cross beams of the guardrails during installation. The second right-angle side structure comprises two vertical rods 15 arranged in parallel, the upper ends of the vertical rods 15 are fixedly connected with the corresponding upper transverse rods 13, and the lower ends of the vertical rods 15 are connected with inclined rods 18 of a bevel side structure. The bevel edge arrangement comprises two parallel arranged bevel bars 18. The upper end of the diagonal rod 18 is fixedly connected with the corresponding upper transverse beam 13, and the other end is fixedly connected with the vertical rod 15 and then extends out, and is fixedly connected with the lower cross beam of the guardrail during installation. The beam rod structure additionally arranged in the middle of the three-side rod structure is a lower truss structure, and the lower truss structure comprises two lower truss transverse rods 14 arranged in parallel and two lower truss vertical rods 17 arranged in parallel. One end of the lower horizontal beam 14 is fixed to the corresponding vertical rod 15, and the other end is connected to the corresponding diagonal rod 18 and then extended to be fixed to the corresponding plate-like diagonal support 10. Both ends of the lower vertical member 17 are fixed to the lower horizontal member 14 (or the corresponding vertical member 15 and diagonal member 18), and the two lower horizontal members 14 and the two lower vertical members 17 form a rectangle or a square. The outer ends of the upper transverse rods 13 and the lower transverse rods 14 are provided with star-shaped reinforcing ribs 11, one ends of the reinforcing ribs 11 are fixedly connected with the corresponding transverse rods, and the other ends of the reinforcing ribs 11 are fixedly connected with the inner surfaces of the corresponding plate-shaped inclined supports 10. When the rod in the third support frame 3 is connected, the rod is connected with the reinforcing rib, and the rod is connected with the plate-shaped inclined support, the welding mode can be adopted.

The guide plate supporting structures are arranged on two sides of the fan bridge structure and are symmetrical by a single guide plate supporting structure with a middle cantilever of 2.1 meters.

The utility model provides a direct air cooling system cooling air guiding device's bearing structure aim at supports guide plate device, its simple structure, and the component is steel commonly used, construction convenient operation. As shown in fig. 2, the number, size and arrangement of the deflectors are determined according to the overall arrangement and design parameters of the original direct air cooling unit, so that different guide supporting structures can be selected, the size and distribution of the deflectors are determined according to different air cooling units and project working condition analysis, and the guide supporting structures can be fixed in the air cooling units by selecting the above supporting forms for different deflectors.

As shown in fig. 3, each square tube and steel plate member of the single guide plate support structure with 1.3 m overhanging are positioned and welded, and the reinforcing rib is welded on the guide plate according to the design size, and the guide plate is fixed on the support structure to form a whole. The supporting structure is integrally welded on the truss railing beam, and square pipe supports are respectively arranged on two sides of the supporting structure so as to enhance the overall stability.

As shown in fig. 4, the single deflector support structure embodiment with 2.1 m overhang is the same as that shown in fig. 3, and each bar is processed according to the length of the figure, assembled and welded on the truss railing beam.

As shown in fig. 5, the combined baffle support structure with an overhang of 1.4 m is composed of two parallel triangular square pipe trusses. After the single triangular support truss and the ribbed guide plate are combined, the two trusses are connected by using a square pipe and integrally welded on the truss type handrail without arranging lateral support.

The single guide plate supporting structure with the overhanging length of 2.1 meters is arranged in the middle of the fan bridge, the two sides of the single guide plate supporting structure are respectively provided with the combined guide plate supporting structure with the overhanging length of 1.4 meters and the single guide plate supporting structure with the overhanging length of 1.3 meters, the arrangement mode forms the arrangement of the guide plates which are staggered, and the air flow distribution in the unit field can be greatly optimized.

Generally speaking, because direct air cooling unit is in the operation process throughout the year, external environment influence and equipment loss exist simultaneously, finned tube bundle's heat transfer performance reduces more inevitable, increases the guide vane device and can optimize the air current distribution in the unit field, and the control backpressure increases. Through the implementation of the arrangement structure of this application, at first guaranteed the fail safe nature of guide plate device, to reforming transform the engineering in addition, this application has the realization and changes less to former unit equipment, and the transformation construction work load is less relatively, construction cycle is short, the transformation investment is less relatively, the advantage that the income is great relatively, convenient to popularize and use.

The supporting structure of the cooling air guiding device of the direct air cooling system provided by the embodiment of the application is described in detail above. The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

As used in the specification and claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.