Connecting device between cooling triangle and broadening platform

Abstract

The utility model discloses a connecting device between a cooling triangle and a broadening platform, and relates to the technical field of thermal power generation equipment. The cooling device is technically characterized by comprising a cooling triangle and a broadening platform, wherein a fixed cross beam and a cushion block are connected to the top of a cooling triangle frame; the fixed cross beam and the cushion block are each provided with a force transmission unit used for being connected with a broadening platform. The force transmission unit comprises a fixed part and a telescopic part, the telescopic part is movably inserted into the fixed part, the lower end of the fixed part is connected with the fixed cross beam or the cushion block, the upper end of the telescopic part is connected with the broadening platform, and the lower end of the telescopic part is connected with the fixed part through an elastic piece. The telescopic part and the fixed part arranged between the cooling triangle piece and the broadening platform can adapt to the deformation of the cooling triangle in the vertical direction through the distance change between the telescopic part and the fixed part, and compared with the prior art, the stress generated in the heat expansion and cold contraction process of the cooling triangle can be effectively released, so that the safety of the cooling triangle in the using process is improved.

Description

Technical Field

[0001] The present application relates to the technical field of thermal power generation equipment, and in particular to a connection device between a cooling triangle and a widening platform. Background Art

[0002] The natural ventilation direct air cooling system is equivalent to a combination of a direct air cooling system and an indirect air cooling system. In the natural ventilation direct air cooling system, a circle of self-supporting cooling triangles is arranged around the cooling tower. The cooling triangle consists of a cooling tube bundle arranged on the triangle frame and equipment such as louvers placed on the windward side. The cooling tube bundle can be divided into downstream tube bundles and countercurrent tube bundles. During installation, the bottom of the cooling triangle frame is fixed to the cooling triangle legs with positioning bolts, and the top is welded and fixed to the outer ring beam of the widening platform on the cooling tower with anchor rods. When in use, the cooling triangle will transfer a portion of the horizontal load (wind load and seismic load) to the widening platform.

[0003] Since the cooling cam expands upward when heated and contracts downward when cooled, the connection between the cooling cam and the expansion platform must transmit the horizontal load of the cooling cam without restricting its vertical displacement. However, the existing cooling cam frame and the expansion platform are fixedly connected using anchor rods. As a result, when the cooling cam expands and contracts due to heat, the connection between them will restrict its vertical displacement, which can easily affect the safety of the cooling cam during use. Utility Model Content

[0004] The present application provides a connecting device between the cooling triangle and the widening platform, which can not only serve as a connection between the cooling triangle and the widening platform, but also release the deformation of the cooling triangle in time when it is deformed due to thermal expansion and contraction, thereby ensuring the safety of the cooling triangle during use.

[0005] The above-mentioned purpose of this application is achieved through the following technical solutions:

[0006] A connecting device between a cooling cam and a widening platform, comprising a cooling cam and a widening platform, wherein a fixed crossbeam is fixedly connected to the middle position of the top of the cooling cam frame, and a pad having the same thickness as the fixed crossbeam is fixedly installed on the top of the tip of the cooling cam frame;

[0007] A force transmission unit for connecting to the widening platform is installed on each of the fixed crossbeam and the pad;

[0008] The force transmission unit includes a fixed portion and a telescopic portion. The telescopic portion is movably inserted into the fixed portion. The lower end of the fixed portion is connected to the fixed beam or the pad, and the upper end of the telescopic portion is connected to the widening platform. The lower end of the telescopic portion is connected to the fixed portion via an elastic member. Under normal conditions, the elastic member can create a gap between the lower end of the telescopic portion and the bottom plate of the fixed portion.

[0009] Furthermore, the fixing part includes a supporting sleeve, the upper end of the supporting sleeve is provided with an opening, the telescopic part is inserted into the supporting sleeve through the opening at the upper end of the supporting sleeve, the lower end of the supporting sleeve is welded to a flange plate, and the four corners of the flange plate are respectively fixed to the fixed beam or the pad by a bolt.

[0010] Furthermore, the telescopic part includes a telescopic rod and a guide member, the diameter of the telescopic rod is smaller than the inner diameter of the support sleeve, the lower end of the telescopic rod is inserted into the support sleeve and is connected to the bottom plate of the support sleeve through the elastic member, the upper end of the telescopic rod is connected to the widening platform, and the guide member is installed on the outside of the telescopic rod, and the guide member can guide the support sleeve to move along the axial direction of the telescopic rod.

[0011] Furthermore, the guide member includes two outward expansion rods and a guide sleeve, the two outward expansion rods are respectively fixedly installed on opposite sides of the telescopic rod, and an avoidance groove is respectively provided at the positions corresponding to the two outward expansion rods on the support sleeve, and the two outward expansion rods are respectively inserted into the two avoidance grooves; the guide sleeve is movably sleeved on the outside of the support sleeve, and the inner diameter of the guide sleeve is equal to the outer diameter of the support sleeve; the ends of the two outward expansion rods that are away from each other are fixedly connected to the guide sleeve through a suspension rod.

[0012] Furthermore, the elastic member is a rectangular alloy spring.

[0013] Furthermore, the top of the telescopic rod is connected to the widening platform via a radial bracket, and the radial bracket can increase the contact area between the telescopic rod and the widening platform.

[0014] Furthermore, the radial bracket includes a sleeve fixed together by a positioning block and the top of the telescopic rod, a force transmission rod is fixedly installed in the sleeve, and a support rod is inserted through each end of the force transmission rod; the lower end of the support rod is fixedly connected to the force transmission rod, and the upper end of the support rod is fixedly connected to the embedded steel plate on the lower side of the widening platform.

[0015] Furthermore, the upper end of one side of the cooling triangle frame on which the shutter is installed is connected to the lower side of the edge of the widening platform through a metal corrugated plate.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] The top of the cooling triangle frame of the present application is connected to the widening platform through two force transmission units. During normal use, when the cooling triangle expands and deforms due to heat or contracts and deforms due to cold, the fixed part can move upward to extrude the elastic part or move downward to stretch the elastic part. In this way, the distance between the telescopic part and the fixed part will change to adapt to the deformation of the cooling triangle in the vertical direction. Compared with the method of fixing the cooling triangle and the widening platform together through a connecting device in the prior art, it can effectively avoid the cooling triangle from being constrained by the vertical deformation during the thermal expansion and contraction process, and the stress caused at the connection between it and the widening platform will damage the cooling triangle and affect its safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the state of this application when it is in use;

[0020] Figure 2 is a top view of the present application;

[0021] Figure 3 It is a structural schematic diagram of the fixed part and the telescopic part of the present application and related components installed on the telescopic part.

[0022] Figure numerals: 1. Cooling triangle; 2. Widening platform; 3. Fixed beam; 4. Pad; 5. Force transmission unit; 51. Fixed part; 511. Support sleeve; 512. Flange plate; 52. Telescopic part; 521. Telescopic rod; 522. Guide member; 5221. Outward expansion rod; 5222. Guide collar; 5223. Avoidance slot; 5224. Hanging rod; 53. Elastic member; 6. Radial bracket; 61. Positioning block; 62. Sleeve; 63. Force transmission rod; 64. Support rod; 65. Embedded steel plate; 7. Metal corrugated plate; 8. Cooling tower. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0024] like Figure 1-Figure 3 The figure shows a connection device between a cooling cam and a widening platform disclosed in the present application, comprising a cooling cam 1 and a widening platform 2. A fixed crossbeam 3 is fixedly connected to the middle position of the top of the cooling cam frame 1, and a spacer 4 with the same thickness as the fixed crossbeam 3 is fixedly installed on the top of the tip of the cooling cam frame 1.

[0025] A force transmission unit 5 for connecting to the widening platform 2 is installed on each of the fixed crossbeam 3 and the pad 4;

[0026] The force transmission unit 5 includes a fixed part 51 and a telescopic part 52. The telescopic part 52 is movably inserted into the fixed part 51. The lower end of the fixed part 51 is connected to the fixed beam 3 or the pad 4, and the upper end of the telescopic part 52 is connected to the widening platform 2. The lower end of the telescopic part 52 is connected to the fixed part 51 through an elastic member 53. Under normal conditions, the elastic member 53 can create a gap between the lower end of the telescopic part 52 and the bottom plate of the fixed part 51.

[0027] In the above embodiment, the present application connects the top of the cooling triangle 1 frame to the widening platform 2 via two force transmission units 5 to ensure a stable connection between the cooling triangle 1 and the widening platform 2 during use. During normal use, the tube bundle within the cooling triangle 1 is fed with exhaust steam from the steam turbine. When the exhaust steam volume is large and the heat is not dissipated quickly, the entire cooling triangle 1 will expand due to the heat. Generally, the height of the cooling triangle 1 is much greater than its width, so its vertical expansion and deformation will be more obvious. The commonly used lower support type widening platform 2 is fixedly installed on the inclined support of the cooling tower 8 through the lower inclined support rod, so the position of the widening platform 2 is generally fixed. In order to release the expansion deformation of the cooling triangle 1, the power transmission unit 5 set between the cooling triangle 1 and the widening platform 2 can play the same power transmission effect as the ordinary connection device through the fixed part 51, the elastic part 53 and the telescopic part 52 under normal conditions. When the cooling triangle 1 expands due to heat, the upper end of the elastic part 53 and the telescopic part 52 remain stationary under the restriction of the widening platform 2, and the lower end of the elastic part 53 and the fixed part 51 can move with the upper end of the cooling triangle 1. When the cooling triangle 1 is displaced upward, the elastic member 53 can release the expansion deformation of the cooling triangle 1 by its own deformation during this process. Similarly, when the cooling triangle 1 is used in winter and shrinks and deforms due to a sudden drop in ambient temperature, the elastic member 53 can also release the contraction deformation of the cooling triangle 1 by its own deformation. Compared with the prior art method of fixing the cooling triangle 1 and the widening platform 2 together through a connecting device, it can effectively avoid the cooling triangle 1 from being constrained in the vertical direction during the thermal expansion and contraction process due to the stress caused at the connection between it and the widening platform 2, which may damage the frame or tube bundle and other components of the cooling triangle 1, thereby affecting its safety during use.

[0028] Furthermore, if Figure 3 As shown, the fixing portion 51 includes a supporting sleeve 511, the upper end of which is provided with an opening, the telescopic portion 52 is inserted into the supporting sleeve 511 through the opening at the upper end of the supporting sleeve 511, the lower end of the supporting sleeve 511 is welded to a flange plate 512, and the four corners of the flange plate 512 are fixed to the fixed beam 3 or the pad 4 by a bolt respectively.

[0029] In the above embodiment, the support sleeve 511 is mounted on the corresponding fixed beam 3 or spacer 4 via the flange plate 512. This allows the support sleeve 511 to be fixed to the cooling cam 1. When the top of the cooling cam 1 moves, it moves with the support sleeve 511. The opening at the top of the support sleeve 511 facilitates the installation of the elastic member 53 and part of the telescopic portion 52 therein.

[0030] Furthermore, if Figure 3As shown, the telescopic portion 52 includes a telescopic rod 521 and a guide member 522. The diameter of the telescopic rod 521 is smaller than the inner diameter of the support sleeve 511. The lower end of the telescopic rod 521 is inserted into the support sleeve 511 and is connected to the bottom plate of the support sleeve 511 through the elastic member 53. The upper end of the telescopic rod 521 is connected to the widening platform 2. The guide member 522 is installed on the outside of the telescopic rod 521. The guide member 522 can guide the support sleeve 511 to move along the axial direction of the telescopic rod 521.

[0031] In the above embodiment, the diameter of the telescopic rod 521 of the present application is smaller than the inner diameter of the support sleeve 511, which makes it easier to insert the telescopic rod 521 into the support sleeve 511. The upper end of the telescopic rod 521 is connected to the widening platform 2. In this way, when the cooling triangle 1 expands and contracts due to heat, the telescopic rod 521 can remain stationary with the widening platform 2, so that the support sleeve 511 and the telescopic rod 521 can cooperate to stretch or compress the elastic member 53. When the support sleeve 511 moves in the vertical direction, the guide member 522 located on the outside of the telescopic rod 521 can guide the support sleeve 511, ensuring that the support sleeve 511 always remains coaxial with the telescopic rod 521 during the movement process, ensuring that the support sleeve 511 can move smoothly in the vertical direction.

[0032] Furthermore, if Figure 3 As shown, the guide member 522 includes two outward expansion rods 5221 and a guide collar 5222. The two outward expansion rods 5221 are fixedly mounted on opposite sides of the telescopic rod 521. An avoidance slot 5223 is provided at positions corresponding to the two outward expansion rods 5221 on the support sleeve 511. The two outward expansion rods 5221 are respectively inserted into the two avoidance slots 5223; the guide collar 5222 is movably sleeved on the outside of the support sleeve 511, and the inner diameter of the guide collar 5222 is equal to the outer diameter of the support sleeve 511; the ends of the two outward expansion rods 5221 that are away from each other are fixedly connected to the guide collar 5222 via a suspension rod 5224.

[0033] In the above embodiment, the two expansion rods 5221 on the telescopic rod 521 of the present application can provide a mounting base for the guide collar 5222 located on the outside of the support sleeve 511. In this way, the guide collar 5222 and the telescopic rod 521 can form a whole. The guide collar 5222 is mounted on the outside of the support sleeve 511, and the two are slidably connected in the vertical direction. In this way, when the support sleeve 511 moves vertically with the cooling cam 1, the guide collar 5222 can ensure that the support sleeve 511 and the telescopic rod 521 are always coaxial, ensuring that the deformation caused by thermal expansion and contraction of the cooling cam 1 can be smoothly released. The two avoidance notches 5223 provided on the support sleeve 511 can reduce the impact of the expansion rods 5221 on the support sleeve 511 during its movement.

[0034] Furthermore, the elastic member 53 is a rectangular alloy spring.

[0035] In the above embodiments, the rectangular alloy spring, also known as a die spring, is so-called because it is primarily made of alloy and has a rectangular cross-section. Rectangular alloy springs generally have higher stiffness and load capacity. Compared to conventional round springs of the same size, rectangular springs can withstand greater forces, provide more uniform stress distribution, and reduce stress concentration, thereby extending their service life. In actual use, this spring, along with the diagonal brace below the widening platform 2, provides support for the widening platform 2, thereby improving its stability during operation.

[0036] Furthermore, if Figure 3 As shown, the top of the telescopic rod 521 is connected to the widening platform 2 via a radial bracket 6 , and the radial bracket 6 can increase the contact area between the telescopic rod 521 and the widening platform 2 .

[0037] In the above embodiments, the top of the telescopic rod 521 of the present application is connected to the widening platform 2 through the radial bracket 6. By increasing the contact area between the telescopic rod 521 and the widening platform 2, the uniformity of force transmission between the cooling triangle 1 and the widening platform 2 can be improved.

[0038] Furthermore, if Figure 3 As shown, the radial bracket 6 includes a sleeve 62 fixed together by a positioning block 61 and the top of the telescopic rod 521, and a force transmission rod 63 is fixedly installed in the sleeve 62, and a support rod 64 is inserted through both ends of the force transmission rod 63; the lower end of the support rod 64 is fixedly connected to the force transmission rod 63, and the upper end of the support rod 64 is fixedly connected to the embedded steel plate 65 on the lower side of the widening platform 2.

[0039] In the above embodiment, the top of the telescopic rod 521 of the present application can evenly transmit force to the two support rods 64 through the force transmission rod 63, and then transmit the force to the widening platform 2 through the two support rods 64 and the embedded steel plate 65 connected to them. Compared with directly connecting the upper end of the telescopic rod 521 to the widening platform 2, the area where the force is transmitted to the widening platform 2 can be increased, thereby reducing the risk of deformation of the widening platform 2 due to repeated local compression and tension, and improving the stability of the widening platform 2 during use.

[0040] Furthermore, if Figure 1 and Figure 2 As shown, the upper end of one side of the cooling triangle 1 frame on which the shutters are installed is connected to the lower side of the edge of the widening platform 2 through a metal corrugated plate 7.

[0041] In the above embodiment, the metal corrugated plate 7 placed between the cooling triangle 1 frame and the widening platform 2 can adapt to the distance change between the cooling triangle 1 and the widening platform 2 in real time when the cooling triangle 1 expands and contracts due to heat, so as to ensure the sealing effect of the space between the upper end of the cooling triangle 1 and the widening platform 2, especially in winter, to prevent and reduce the risk of cold air leaking from the upper end of the cooling triangle 1.

[0042] The implementation principle of this embodiment is: during normal use, when the cooling triangle 1 expands and deforms due to heat or contracts and deforms due to cold, the support sleeve 511 in the fixed part 51 can move upward to extrude the elastic part 53 or move downward to stretch the elastic part 53, so that the position of the telescopic rod 521 in the telescopic part 52 in the support sleeve 511 will change, so as to ensure that the cooling triangle 1 can release the deformation caused by thermal expansion and contraction in time. Compared with the method of fixing the cooling triangle 1 and the widening platform 2 together through a connecting device in the prior art, it can effectively avoid the thermal expansion and contraction process of the cooling triangle 1 due to the vertical deformation being constrained, and the stress caused at the connection between it and the widening platform 2, which damages the cooling triangle 1 and affects its safety during use.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A connecting device between a cooling cam and a widening platform, comprising a cooling cam (1) and a widening platform (2), characterized in that: A fixed crossbeam (3) is fixedly connected to the middle position of the top of the cooling triangle (1) frame, and a pad (4) with the same thickness as the fixed crossbeam (3) is fixedly installed on the top of the tip of the cooling triangle (1) frame; A force transmission unit (5) for connecting to the widening platform (2) is installed on each of the fixed crossbeam (3) and the cushion block (4); The force transmission unit (5) comprises a fixed portion (51) and a telescopic portion (52), wherein the telescopic portion (52) is movably inserted into the fixed portion (51), the lower end of the fixed portion (51) is connected to the fixed crossbeam (3) or the cushion block (4), the upper end of the telescopic portion (52) is connected to the widening platform (2), and the lower end of the telescopic portion (52) is connected to the fixed portion (51) via an elastic member (53), wherein the elastic member (53) can, under normal conditions, provide a gap between the lower end of the telescopic portion (52) and the bottom plate of the fixed portion (51).

2. The connection device between the cooling cam and the widening platform according to claim 1, characterized in that: The fixing portion (51) includes a supporting sleeve (511), the upper end of the supporting sleeve (511) is provided with an opening, the telescopic portion (52) is inserted into the supporting sleeve (511) through the opening at the upper end of the supporting sleeve (511), the lower end of the supporting sleeve (511) is welded to a flange plate (512), and the four corners of the flange plate (512) are respectively fixed to the fixed beam (3) or the pad (4) by a bolt.

3. The connection device between the cooling cam and the widening platform according to claim 2, characterized in that: The telescopic portion (52) includes a telescopic rod (521) and a guide member (522). The diameter of the telescopic rod (521) is smaller than the inner diameter of the support sleeve (511). The lower end of the telescopic rod (521) is inserted into the support sleeve (511) and is connected to the bottom plate of the support sleeve (511) through the elastic member (53). The upper end of the telescopic rod (521) is connected to the widening platform (2). The guide member (522) is installed on the outside of the telescopic rod (521). The guide member (522) can guide the support sleeve (511) to move along the axial direction of the telescopic rod (521).

4. The connection device between the cooling cam and the widening platform according to claim 3, characterized in that: The guide member (522) includes two outward expansion rods (5221) and a guide collar (5222), the two outward expansion rods (5221) are respectively fixedly mounted on opposite sides of the telescopic rod (521), and a relief notch (5223) is respectively provided at positions corresponding to the two outward expansion rods (5221) on the support sleeve (511), and the two outward expansion rods (5221) are respectively inserted into the two relief notches (5223); the guide collar (5222) is movably sleeved on the outside of the support sleeve (511), and the inner diameter of the guide collar (5222) is equal to the outer diameter of the support sleeve (511); the ends of the two outward expansion rods (5221) that are away from each other are fixedly connected to the guide collar (5222) via a suspension rod (5224).

5. The connection device between the cooling cam and the widening platform according to any one of claims 1 to 4, characterized in that: The elastic member (53) is a rectangular alloy spring.

6. The connection device between the cooling cam and the widening platform according to claim 3, characterized in that: The top of the telescopic rod (521) is connected to the widening platform (2) via a radial bracket (6), and the radial bracket (6) can increase the contact area between the telescopic rod (521) and the widening platform (2).

7. The connection device between the cooling cam and the widening platform according to claim 6, characterized in that: The radial bracket (6) includes a sleeve (62) fixed together with a positioning block (61) and the top of the telescopic rod (521), a force transmission rod (63) is fixedly installed in the sleeve (62), and a support rod (64) is inserted through each end of the force transmission rod (63); the lower end of the support rod (64) is fixedly connected to the force transmission rod (63), and the upper end of the support rod (64) is fixedly connected to the embedded steel plate (65) on the lower side of the widening platform (2).

8. The connection device between the cooling cam and the widening platform according to claim 1, characterized in that: The upper end of one side of the cooling triangle (1) frame on which the shutter is installed is connected to the lower side of the edge of the widening platform (2) through a metal corrugated plate (7).

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