Cooling device

Abstract

The invention discloses a cooling device which comprises an annular shell and a heat exchange pipe, the heat exchange pipe is arranged in the annular shell and connected with an inner ring of the annular shell, the heat exchange pipe and the annular shell are connected into a whole to form a dividing wall type heat exchange structure, and under the condition that the heat exchange pipe leaks, the annular shell can serve as a secondary pressure-bearing boundary, so that the heat exchange pipe is prevented from leaking. Heat exchange medium leakage is prevented, and the heat exchange efficiency cannot be reduced. According to the cooling device disclosed by the scheme, the heat exchange pipes of the cooling device are integrated in the annular shell and can be integrally mounted in the mounting stage, so that the mounting efficiency is improved, and the mounting period of a construction site is shortened; the cooling device is arranged between the discharging pipe shield and the civil engineering structure, the half-pipe type heat exchange pipe is adopted, the flowing speed of a heat exchange medium is increased, meanwhile, the heat exchange area is increased, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear reactors, and in particular to a cooling device. Background Art

[0002] The spherical fuel of the high-temperature gas-cooled reactor is discharged through a discharge pipe after the fission reaction in the reactor. A discharge pipe shield is arranged outside the discharge pipe to play a role in radiation protection.

[0003] Since the spherical fuel is still in a high temperature state when passing through the discharge pipe, the temperature of the discharge pipe shield is relatively high. At this time, the discharge pipe shield needs to be cooled to prevent the discharge pipe shield from brittle cracking due to high temperature and causing danger.

[0004] There is a civil engineering structure outside the discharge pipe shield. In the related art, a cooling device for cooling the discharge pipe shield is arranged inside the civil engineering structure. Specifically, the cooling structure has a plurality of cooling pipes, and the plurality of cooling pipes are sequentially cast in the concrete of the civil engineering structure, which makes the installation process of the cooling device complicated.

[0005] Therefore, how to simplify the installation process of the cooling device has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0006] The present application proposes a cooling device to improve the heat exchange efficiency of a heat exchange device and reduce the difficulty of maintaining the heat exchange device.

[0007] In order to achieve the above-mentioned purpose, the present application provides a cooling device located in the annular space between the discharge pipe shield and the civil structure, comprising:

[0008] An annular shell, sleeved on the discharge pipe shield, the annular shell being detachably connected to the civil structure;

[0009] The heat exchange tube is arranged in the annular shell, the heat exchange tube is spirally wound along the inner ring of the annular shell, and the heat exchange tube is filled with heat exchange medium.

[0010] Preferably, in the above cooling device, the number of the heat exchange tubes is multiple, and two adjacent heat exchange tubes are wound in parallel.

[0011] It also includes an inlet ring pipe, which is sleeved on the inner ring, and has a liquid supply port connected to the liquid supply ends of the plurality of heat exchange tubes, and is provided with a liquid inlet pipe for supplying the heat exchange medium; and / or,

[0012] It also includes an outlet ring pipe, which is sleeved on the inner ring and has a discharge port connected to the discharge ends of the plurality of heat exchange tubes. The outlet ring pipe is provided with a liquid outlet pipe for discharging the heat exchange medium.

[0013] Preferably, in the above cooling device, the heat exchange tube is connected to the liquid supply port through a first transition tube, so that the heat exchange tube is connected to the liquid supply port smoothly.

[0014] The heat exchange tube is connected with the drain port through a second transition tube, so that the heat exchange tube is connected with the drain port smoothly;

[0015] And / or, the inlet ring pipe and the outlet ring pipe are coaxial with the inner ring.

[0016] Preferably, in the above cooling device, the liquid outlet pipe is connected to the liquid discharge port through a vertical pipe, so as to lead the liquid outlet pipe to a side of the annular shell where the liquid inlet pipe is arranged.

[0017] Preferably, in the above cooling device, the side of the heat exchange tube facing the inner ring is an open side, and the open side of the heat exchange tube is sealed and connected to the inner ring.

[0018] Preferably, in the above cooling device, the heat exchange tube is a circumferentially closed heat exchange tube, and the heat exchange tube is connected to the inner ring via a bracket or the heat exchange tube is connected to the inner ring by welding.

[0019] Preferably, in the above cooling device, fins are provided on the tube wall of the heat exchange tube.

[0020] Preferably, the cooling device further comprises a reinforcing pipe, which is used to blow gas into between the discharge pipe shield and the annular shell to enhance the gas flow between the discharge pipe shield and the annular shell.

[0021] Preferably, in the above cooling device, the reinforcement pipe passes through the annular shell; and / or,

[0022] The reinforcement pipe is arranged to be inclined from bottom to top.

[0023] Preferably, in the above cooling device, a support is provided at the lower end of the annular shell, and the support has a support foot connected to the civil engineering embedded parts by bolts;

[0024] The annular shell is connected to the support by welding.

[0025] The cooling device disclosed in the present application is located in the annular space between the discharge pipe shield and the civil engineering structure, and includes an annular shell and a heat exchange tube. The heat exchange tube is arranged in the annular shell and connected to the inner ring of the annular shell. The heat exchange tube and the annular shell are connected to form an annular structure that matches the outer peripheral shape of the discharge pipe shield. During installation, the annular structure is integrally sleeved on the discharge pipe shield to form a partition-type heat exchange structure. The cooling device disclosed in the present solution integrates the heat exchange tube of the cooling device in the annular shell, and the cooling structure can be integrally sleeved on the discharge pipe shield to achieve overall installation during the installation stage. Compared with the method of casting cooling tubes one by one on the civil engineering structure in the prior art, the installation process of the cooling device on the discharge pipe shield is simplified.

[0026] In addition, this solution sets the cooling device between the discharge pipe shield and the civil structure, and the diameter of the heat exchange tube used is reduced, which speeds up the flow rate of the heat exchange medium and improves the heat exchange efficiency;

[0027] At the same time, the cooling device is arranged around the discharge pipe shielding, and the cooling device can exchange heat at various positions of the discharge pipe shielding, thereby increasing the heat exchange area and improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present application can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0029] Figure 1 It is a schematic diagram of the structure of the cooling device of the present application;

[0030] Figure 2 is a schematic diagram of the structure of the cooling device (without annular housing) of the present application;

[0031] Figure 3 is a top view of the cooling device of the present application;

[0032] Figure 4 yes Figure 3 Section view along AA;

[0033] Figure 5 yes Figure 3 Section view along BB.

[0034] The accompanying drawings are as follows:

[0035] 1- annular shell; 2- heat exchange tube; 3- inlet annular tube; 4- outlet annular tube; 5- first transition tube; 6- second transition tube; 7- vertical tube; 8- reinforced tube; 9- support. DETAILED DESCRIPTION

[0036] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are only used to explain the related application, rather than to limit the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0037] It should be noted that, for ease of description, only the parts related to the relevant applications are shown in the accompanying drawings. In the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0038] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0039] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0040] See also Figure 1-Figure 5 .

[0041] Some embodiments of the present application disclose a cooling device, which is located in an annular space between a discharge pipe shield and a civil structure, and includes an annular shell 1 and a heat exchange tube 2 adapted to the shape of the annular inner cavity, and a heat exchange medium is filled in the heat exchange tube 2. The annular shell 1 and the heat exchange tube 2 are combined to form an annular structure adapted to the shape of the discharge pipe shield, and the annular structure is sleeved on the discharge pipe shield to form a partition wall heat exchange structure.

[0042] In this solution, the annular shell 1 is sleeved on the discharge pipe shield, and the annular shell 1 is detachably connected to the civil structure to fix the cooling device, and the heat exchange tube 2 is arranged in the annular shell 1, and the heat exchange tube 2 is spirally wound along the inner ring of the annular shell 1. When working, the cold energy of the heat exchange tube 2 is transferred to the discharge pipe shield through the inner ring of the annular shell 1 to cool the discharge pipe shield.

[0043] The cooling device disclosed in the present scheme is installed in the annular cavity between the discharge pipe shield and the civil structure and is sleeved on the discharge pipe shield. Compared with the form of casting the heat exchange tube in the civil structure, a semi-tube heat exchange tube is adopted, which speeds up the flow rate of the heat exchange medium, increases the heat exchange area, and improves the heat exchange efficiency.

[0044] The cooling device disclosed in the present scheme integrates the heat exchange tube 2 in the annular shell 1 to form an annular structure adapted to the shape of the discharge pipe shield. The cooling device is assembled in the circumferential direction of the discharge pipe shield by sleeve installation, thereby realizing the overall installation of the cooling device. Compared with the method in the related art in which the cooling tubes of the cooling device are cast one by one in the civil engineering structure, the installation process of the cooling device is simplified; since the annular space between the discharge pipe shield and the civil engineering structure is limited, the diameter of the heat exchange tube 2 is reduced relative to the diameter of the cooling tube of the cooling device in the related art, which can accelerate the flow rate of the heat exchange medium in the heat exchange tube 2 and improve the heat exchange efficiency of the cooling device to a certain extent; at the same time, the heat exchange tube 2 is spirally wound along the inner ring of the annular shell 1, and the cooling device can perform heat exchange at various positions in the circumferential direction of the discharge pipe shield, thereby increasing the heat exchange area between the cooling device and the discharge pipe shield, further enhancing the heat exchange efficiency of the cooling device, and also ensuring the temperature uniformity of various positions in the circumferential direction of the discharge pipe shield to a certain extent.

[0045] The annular shell 1 has an inner ring and an outer ring arranged coaxially, and sealing plates located at both ends of the inner ring and the outer ring in the axial direction. The annular shell 1 can be a shell with a sealing and pressure-bearing function, or it can be a shell that only has the function of installing the heat exchange tube 2. The annular shell 1 can be manufactured by integral processing to reduce welds, or it can be made by casting or 3D printing and other technologies. In some embodiments, the sealing plate located only at the bottom of the annular shell 1 can be welded to the annular shell 1, so that the annular shell 1 has only two welds, and there are no welds at other positions, fewer welds, and high sealing reliability.

[0046] In this solution, the heat exchange tube 2 serves as the main channel for the heat exchange medium to circulate. The heat exchange tube 2 has an inlet and an outlet. The heat exchange medium flows in the heat exchange tube 2 to ensure that the heat exchange medium in the heat exchange tube 2 always maintains a good heat exchange capacity.

[0047] In some embodiments, the heat exchange tube 2 is spirally wound along the inner ring to form a continuous heat exchange structure in the circumferential and axial directions of the inner surface of the inner ring in the annular shell 1, thereby ensuring the cooling effect of the cooling device on the discharge pipe shielding.

[0048] In other embodiments, the heat exchange tube 2 is bent back and forth along the axial direction of the inner ring to form a continuous heat exchange structure on the inner ring.

[0049] The number of the heat exchange tube 2 arranged in the annular shell 1 is at least one.

[0050] In an embodiment where the number of the heat exchange tube 2 is one, the heat exchange tube 2 is spirally wound along the circumference of the inner ring. Optionally, the annular gap of the spiral heat exchange tube 2 is smaller than the diameter of the heat exchange tube 2, so as to increase the contact area between the heat exchange tube 2 and the inner ring and improve the heat exchange effect.

[0051] In an embodiment where the number of heat exchange tubes 2 is at least two, the winding directions of two adjacent heat exchange tubes 2 along the circumference of the inner ring are parallel, and the annular gap of the spiral heat exchange tube 2 can be larger than the diameter of the heat exchange tube 2, so that the annular gap of the previous spiral heat exchange tube 2 can be used for the next heat exchange tube 2 to be spirally wound. Optionally, two adjacent heat exchange tubes 2 are staggered and closely wound to fully utilize the area of ​​the inner surface of the inner ring and increase the heat exchange area between the heat exchange tube 2 and the inner ring.

[0052] In the embodiment where the number of heat exchange tubes 2 is at least two, the heat exchange tubes 2 may also be stacked in multiple layers along the radial direction of the inner ring, the diameters of the multiple layers of heat exchange tubes gradually increase, and the heat exchange tubes far from the inner ring have the largest diameter.

[0053] The heat exchange tube 2 is spirally wound around the outer periphery of the inner ring, which can increase the flow rate of the heat exchange medium, is not easy to scale, has a large Reynolds number, and a high heat transfer coefficient. The smaller the inclination angle of a single ring after the heat exchange tube 2 is spirally wound, the higher the flow rate of the heat exchange medium in the heat exchange tube 2, and the better the heat exchange effect.

[0054] The heat exchange tube 2 is not limited to being arranged in the inner ring of the annular shell 1, but can also be arranged in the outer ring of the annular shell 1. The cooling device of this solution has a sufficiently large contact area with the discharge pipe shield, and the heat exchange tube 2 is integrated in the annular shell 1, which can realize modular manufacturing, assembly and installation of the cooling device and shorten the installation construction period.

[0055] The cooling device disclosed in the present scheme is not limited to cooling the discharge pipe shield, but can also be applied to other tubular structures that require heat exchange, wherein the heat exchange can be heating or cooling. When the tubular structure needs to be heated, the cooling device transfers heat to the tubular structure, and when the tubular structure needs to be cooled, the cooling device transfers cold to the tubular structure.

[0056] If the heat exchange tube 2 leaks, the heat exchange medium in the heat exchange tube 2 can flow directly into the annular shell 1. The annular shell 1 can be used as a backup container for the heat exchange medium to ensure that the heat exchange medium will not leak out of the heat exchange device. The impact of the failure of the seal of the heat exchange tube 2 can be ignored, and the cooling device will not continue to perform heat exchange operations, which provides a double guarantee for operational safety. Optionally, a discharge port for discharging the heat exchange medium leaking into the annular shell 1 is provided on the annular shell 1.

[0057] The cooling device disclosed in the present solution can be filled with heat exchange medium only in the heat exchange tube, or can be filled with heat exchange medium in the annular shell 1 at the same time. In the embodiment where the heat exchange medium is filled in both the annular shell 1 and the heat exchange tube, the cooling device can realize two-pass heat exchange, and the heat exchange medium in the annular shell 1 needs to flow, and the heat exchange medium in the annular shell 1 cools down the heat exchange tube on the one hand, and cools down the civil structure on the other hand.

[0058] Optionally, a detection device is provided in the annular shell 1 for detecting the liquid pressure and / or liquid level in the annular shell 1 to determine whether the heat exchange tube is leaking.

[0059] In this solution, the cooling device is installed from the bottom to the top of the space between the civil structure and the main compartment of the loading and unloading cycle into the annular space between the civil structure and the discharge pipe shield. In order to reduce the difficulty of installing the cooling device, the civil structure needs to be improved. Specifically, the civil structure has a cavity for accommodating the discharge pipe shield, and the cavity wall of the cavity is adapted to the shape of the discharge pipe shield. This solution enlarges the diameter of the cavity near one end of the main compartment of the loading and unloading cycle, and the inside of the cavity is stepped, so that the cooling device can be installed from the bottom to the top of the space between the civil structure and the main compartment of the loading and unloading cycle into the annular space between the civil structure and the discharge pipe shield.

[0060] The heat exchange structure is installed from bottom to top. After the connection between the cooling device and the civil structure is released, the cooling device slides down under the action of its own gravity, and the disassembly process is relatively simple.

[0061] The heat exchange tube 2 has an inlet and an outlet, and the inlet and the outlet of the heat exchange tube 2 can be directly connected to the liquid inlet pipe and the liquid outlet pipe, wherein the liquid inlet pipe is connected to the heat exchange medium supply device, and the heat exchange medium supply device supplies the heat exchange medium into the heat exchange tube 2 through the liquid inlet pipe and the inlet; the liquid outlet pipe is used to discharge the heat exchange medium after the heat exchange tube 2 absorbs heat, and the heat exchange medium is supplied to the heat exchange tube 2 again after being cooled.

[0062] In an embodiment in which the cooling structure has multiple heat exchange tubes 2, the inlet and outlet of the heat exchange tube 2 can also be connected to the liquid inlet pipe and the liquid outlet pipe through the inlet ring pipe 3 and the outlet ring pipe 4. Specifically, the inlet ring pipe 3 and the outlet ring pipe 4 are respectively located at the two ends of the axial direction of the inner ring, wherein the inlet ring pipe 3 is sleeved on the inner ring, the inlet of the heat exchange tube 2 can be connected to any position of the inlet ring pipe 3, and the liquid inlet pipe can also be connected to any position of the inlet ring pipe 3. The setting of the inlet ring pipe 3 reduces the difficulty of laying out the heat exchange tube 2 and the liquid inlet pipe and improves the flexibility of laying out; the outlet ring pipe 4 is sleeved on the inner ring, the outlet of the heat exchange tube 2 can be connected to any position of the outlet ring pipe 4, and the liquid outlet pipe can also be connected to any position of the outlet ring pipe 4. The setting of the outlet ring pipe 4 reduces the difficulty of laying out the heat exchange tube 2 and the liquid outlet pipe and improves the flexibility of laying out.

[0063] The inlet ring pipe 3 and the outlet ring pipe 4 may be parallel to the spiral direction of the heat exchange tube 2 . In this case, the inlet ring pipe 3 and the outlet ring pipe 4 may be directly connected to the inlet and outlet of the heat exchange tube 2 .

[0064] The flow cross-sections of the inlet ring pipe 3 and the outlet ring pipe 4 are greater than or equal to the flow cross-section of the heat exchange tube 2 .

[0065] In some embodiments, in order to reduce restrictions on the inlet annular tube 3 and the outlet annular tube 4 and improve the flexibility of the inlet annular tube 3 and the outlet annular tube 4, the heat exchange tube 2 is connected to the liquid supply port of the inlet annular tube 3 through the first transition tube 5, so that the heat exchange tube 2 is smoothly connected to the liquid supply port, and the heat exchange tube 2 is connected to the liquid discharge port of the outlet annular tube 4 through the second transition tube 6, so that the heat exchange tube 2 is smoothly connected to the liquid discharge port. The first transition tube 5 and the second transition tube 6 are variable curvature pipes, the first transition tube 5 gradually transitions from the inlet annular tube 3 to a tube body circumscribed with the inner ring, the first transition tube 5 and the heat exchange tube 2 have the same cross-sectional shape, the second transition tube 6 gradually transitions from circumscribed with the inner ring to parallel to the axis of the second transition tube 6, and the second transition tube 6 and the heat exchange tube 2 have the same cross-sectional shape.

[0066] The first transition pipe 5 can make up for the axial and circumferential lengths between the heat exchange pipe 2 and the liquid supply port along the inner ring. Figure 2 As shown, the end of the first transition pipe 5 connected to the heat exchange pipe 2 is close to the direction of the inlet of the heat exchange pipe 2, and the first transition pipe 5 gradually bends to the position of the liquid supply port and finally communicates with the liquid supply port; the end of the second transition pipe 6 connected to the heat exchange pipe 2 is close to the direction of the outlet of the heat exchange pipe 2, and the second transition pipe 6 gradually bends to the position of the liquid discharge port and finally communicates with the liquid discharge port. The design of the first transition pipe 5 and the second transition pipe 6 can also reduce the flow resistance of the heat exchange medium in the pipeline to a certain extent, does not affect the flow speed of the heat exchange medium, and ensures the heat exchange efficiency.

[0067] Optionally, the inlet ring pipe 3, the outlet ring pipe 4, the first transition pipe 5, the second transition pipe 6 and the heat exchange pipe 2 are made of the same material.

[0068] In the embodiment where there are at least two heat exchange tubes 2 , the number of the first transition tubes 5 and the second transition tubes 6 is the same as the number of the heat exchange tubes 2 , and the number of the inlet ring tube 3 and the outlet ring tube 4 is only one.

[0069] When the inlet ring pipe 3 is connected to multiple heat exchange tubes 2, the heat exchange medium entering the inlet ring pipe 3 is evenly distributed to the multiple heat exchange tubes 2, and the heat exchange medium after heat exchange in the multiple heat exchange tubes 2 converges to the outlet ring pipe 4 and is discharged through the liquid outlet pipe.

[0070] In some embodiments, the plane where the inlet ring pipe 3 and the outlet ring pipe 4 are located is perpendicular to the axis of the inner ring, ensuring that the angles between the inlet ring pipe 3 and the outlet ring pipe 4 and multiple heat exchange tubes 2 are consistent, thereby improving the uniformity of the distribution of the heat exchange medium in different heat exchange tubes 2.

[0071] The inlet ring pipe 3 can not only play the role of fluid distribution, but also achieve the purpose of the same flow resistance of each heat exchange tube 2 through the reasonable symmetrical design of the connection position between the heat exchange tube 2 and the inlet ring pipe 3. On the other hand, it can realize the simultaneous arrangement of multiple heat exchange tubes 2, saving space while achieving regular arrangement and uniform heat exchange.

[0072] In some embodiments, the outlet ring pipe 4 is fixed on a sealing plate located above the annular housing 1 or a supporting plate parallel to the sealing plate through a pipe rack and double nuts.

[0073] In some embodiments, the liquid inlet pipe and the liquid outlet pipe are respectively located at two ends of the annular shell 1 in the axial direction, thereby reducing the difficulty of connecting the liquid inlet pipe and the liquid outlet pipe with the heat exchange medium supply device.

[0074] In other embodiments, the liquid outlet is connected to the liquid discharge port through the vertical pipe 7, so that the liquid outlet is led to the side of the annular shell 1 where the liquid inlet is arranged, so that the positions of the liquid inlet and the liquid outlet after being led out of the annular shell 1 are as close as possible, reducing the installation impact between the civil engineering interface. In this embodiment, the vertical pipe 7 is connected to the liquid discharge port through a bend pipe, and the bend pipe is bent downward from the liquid discharge port and connected to the vertical pipe 7. The liquid outlet and the liquid inlet are fixed to the annular shell 1 by welding.

[0075] The heat exchange tube 2 may be in various forms.

[0076] In some embodiments, the heat exchange tube 2 is an open side facing the inner ring, and the open side of the heat exchange tube 2 is sealed and connected to the inner ring. The open end of the heat exchange tube 2 and the inner ring can be sealed and connected by welding.

[0077] In this embodiment, the side of the heat exchange tube 2 facing the inner ring is set as an open side, and the heat exchange medium of the heat exchange tube 2 directly contacts the inner ring through the open side. This setting method not only increases the contact area between the heat exchange medium in the heat exchange tube 2 and the inner ring, and the heat exchange efficiency is higher, but also reduces the heat transfer path. The heat is directly transferred from the inner ring to the heat exchange medium, which speeds up the efficiency of heat transfer.

[0078] Preferably, the cross section of the heat exchange tube 2 along the axial direction of the inner ring is semicircular, the heat exchange area between the heat exchange tube 2 and the inner ring reaches the maximum, and at this time the connection area between the heat exchange tube 2 and the inner ring is the largest, and the connection between the heat exchange tube 2 and the inner ring is also relatively stable.

[0079] The heat exchange tube 2 may be a round tube, or a tube with other cross-sectional shapes, such as a rectangle or other polygon, which is not specifically limited here.

[0080] In some embodiments, the heat exchange tube 2 is a circumferentially closed heat exchange tube 2. In this embodiment, the heat exchange tube 2 is connected to the inner ring through a bracket or the heat exchange tube 2 is welded to the inner ring.

[0081] In order to further enhance the heat exchange efficiency of the heat exchange tube 2 , fins may be provided on the outer side of the tube wall of the heat exchange tube 2 to increase the heat exchange area between the heat exchange tube 2 and the space inside the annular shell 1 .

[0082] In some embodiments, the liquid inlet pipe, the liquid outlet pipe, the inlet annular pipe 3 and the outlet annular pipe 4 are all circumferentially closed pipes.

[0083] In order to further optimize the heat exchange effect of the cooling device, the cooling device disclosed in this scheme also includes a reinforcing pipe 8, which is used to blow gas into between the discharge pipe shield and the inner ring to enhance the gas flow between the discharge pipe shield and the inner ring.

[0084] It is used to blow gas into the space between the discharge pipe shield and the inner ring to make the gas flow between the discharge pipe shield and the inner ring, so as to enhance the heat exchange effect.

[0085] In some embodiments, the reinforcing tube 8 passes through the annular shell 1 . The reinforcing tube 8 first passes through the outer ring of the annular shell 1 , then passes through the inner ring of the annular shell 1 , and then extends into between the discharge pipe shield and the inner ring.

[0086] In some embodiments, the reinforcing pipe 8 is located below the annular shell 1, and the reinforcing pipe 8 directly delivers air to between the discharge pipe shield and the inner ring.

[0087] In some embodiments, the reinforcement tubes 8 are evenly or symmetrically distributed in the circumferential direction of the annular shell 1 .

[0088] The gas may be air, carbon dioxide, nitrogen or an inert gas. The specific selection is made by those skilled in the art according to actual needs.

[0089] In order to facilitate the gas to be blown into the space between the discharge pipe shield and the inner ring, the reinforcing pipe 8 is arranged tilted from bottom to top. The reinforcing pipe 8 can be arranged radially or non-radially.

[0090] The cooling device further comprises a support 9 arranged at the lower end of the annular housing 1, and the support 9 has support feet bolted to the embedded civil engineering parts. The number of the support feet is determined by a person skilled in the art according to the weight of the cooling device. The support feet are evenly distributed in the circumference of the support 9.

[0091] During maintenance, the cooling device is removed from the reserved hole to perform maintenance on the cooling device.

[0092] The annular shell 1 is connected to the embedded civil engineering parts through the support 9 and the support feet, which reduces the interface between the annular shell 1 and the civil engineering and occupies a small space.

[0093] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used, and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. The scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned application concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in this application (but not limited to) to form a technical solution.

Claims

1. A cooling device, characterized in that: The annular space between the discharge pipe shield and the civil structure includes: An annular shell (1) is sleeved on the discharge pipe shield, and the annular shell (1) is detachably connected to the civil structure; A heat exchange tube (2) is arranged in the annular shell (1), the heat exchange tube (2) is spirally wound along the inner ring of the annular shell (1), and the heat exchange tube (2) is filled with a heat exchange medium.

2. The cooling device according to claim 1, characterized in that: The number of the heat exchange tubes (2) is plural, and two adjacent heat exchange tubes (2) are wound in parallel. It also comprises an inlet ring pipe (3), the inlet ring pipe (3) being sleeved on the inner ring, the inlet ring pipe (3) having a liquid supply port connected to the liquid supply ends of the plurality of heat exchange tubes (2), the inlet ring pipe (3) being provided with a liquid inlet pipe for supplying the heat exchange medium; and / or, It also comprises an outlet ring pipe (4), the outlet ring pipe (4) being sleeved on the inner ring, the outlet ring pipe (4) having a liquid discharge port connected to the liquid discharge ends of the plurality of heat exchange tubes (2), and the outlet ring pipe (4) being provided with a liquid outlet pipe for discharging the heat exchange medium.

3. The cooling device according to claim 2, characterized in that: The heat exchange tube (2) is connected to the liquid supply port via a first transition tube (5), so that the heat exchange tube (2) is smoothly connected to the liquid supply port. The heat exchange tube (2) is connected to the liquid discharge port via a second transition tube (6), so that the heat exchange tube (2) is smoothly connected to the liquid discharge port; And / or, the inlet ring pipe (3) and the outlet ring pipe (4) are coaxial with the inner ring.

4. The cooling device according to claim 2 or 3, characterized in that: The liquid outlet pipe is connected to the liquid discharge port via a vertical pipe (7) so as to lead the liquid outlet pipe to a side of the annular housing (1) where the liquid inlet pipe is arranged.

5. The cooling device according to claim 1, characterized in that: The side of the heat exchange tube (2) facing the inner ring is an open side, and the open side of the heat exchange tube (2) is sealed and connected to the inner ring.

6. The cooling device according to claim 1, characterized in that: The heat exchange tube (2) is a circumferentially closed heat exchange tube, and the heat exchange tube (2) is connected to the inner ring via a bracket or the heat exchange tube (2) is connected to the inner ring by welding.

7. The cooling device according to claim 5 or 6, characterized in that: Fins are provided on the tube wall of the heat exchange tube (2).

8. The cooling device according to claim 1, characterized in that: It also comprises a reinforcing pipe (8), which is used to blow gas into between the discharge pipe shield and the annular shell (1) to enhance the gas flow between the discharge pipe shield and the annular shell (1).

9. The cooling device according to claim 8, characterized in that: The reinforcement tube (8) passes through the annular shell (1); and / or, The reinforcing tube (8) is arranged to be inclined from bottom to top.

10. The cooling device according to claim 1, characterized in that: A support (9) is provided at the lower end of the annular shell (1), and the support (9) has a support foot connected to the civil engineering embedded parts with bolts; The annular housing (1) is connected to the support (9) by welding.

Images