cooling jacket

Abstract

The application provides a cooling water jacket, which is externally arranged on a speed reducer, and comprises at least one annular cooling jacket body, wherein a water inlet and a water outlet are arranged on the cooling jacket body, the water inlet is configured to be communicated with an external water source, and the water outlet is configured to be communicated with a cooling device; the cooling jacket body has a cooling cavity, the cooling cavity is communicated with the water inlet and the water outlet, and the annular wall on the side of the cooling jacket body away from the cooling cavity is used for being attached to the speed reducer to cool the speed reducer. The cooling water jacket is externally arranged on the speed reducer, the pollution of lubricating oil of the speed reducer is reduced, the applicability of the cooling water jacket is improved, and the annular design can increase the cooling area of the speed reducer and improve the cooling effect of the speed reducer.

Description

Technical Field

[0001] This application relates to the field of water-cooled jacket technology, and more particularly to a cooling water jacket. Background Technology

[0002] A tunnel boring machine (TBM) is a type of engineering machinery specifically designed for tunnel excavation. It can excavate underground under precise computer control according to different geological conditions, and after assembling segments at the tail end, a high-quality tunnel can be formed.

[0003] The main drive of a tunneling machine is a key component that drives the cutterhead rotation. The main drive reducer plays a crucial role in reducing speed and increasing torque, and its performance directly affects the tunneling machine's working efficiency. With prolonged operation, the main drive reducer of the tunneling machine experiences severe overheating, leading to machine shutdown. Related technologies typically incorporate cooling devices to cool the reducer.

[0004] However, in related technologies, the cooling effect of the cooling device is relatively low. Utility Model Content

[0005] The embodiments of this application provide a cooling water jacket that can increase the cooling area of ​​the speed reducer, improve the cooling effect of the speed reducer, and has high applicability.

[0006] To achieve the above objectives, embodiments of this application provide a cooling water jacket externally mounted on a speed reducer. The cooling water jacket includes at least one annular cooling jacket body, which is provided with an inlet and an outlet. The inlet is configured to communicate with an external water source, and the outlet is configured to communicate with a cooling device.

[0007] The cooling jacket body has a cooling cavity, which is connected to the water inlet and the water outlet. The annular wall on the side of the cooling jacket body away from the cooling cavity is used to attach the speed reducer for cooling the speed reducer.

[0008] In one possible implementation, the number of the cold jacket body is one, the cold jacket body has a semi-ring structure, and the water inlet and the water outlet are located on opposite sides of the cold jacket body in the axial direction.

[0009] In one possible implementation, there are two cold jacket bodies, which are joined together to form a complete ring structure and are interconnected.

[0010] In one possible implementation, along the axial direction of the cold jacket body, the outlet of one of the cold jacket bodies is connected to the inlet of the other cold jacket body, so that the two adjacent cold jacket bodies are connected in series.

[0011] In one possible implementation, along the axial direction of the cold jacket body, the inlet of one of the cold jacket bodies and the outlet of the adjacent cold jacket body are located on the same side of the cold jacket body.

[0012] In one possible implementation, there are two cold jacket bodies, which are joined together to form a complete ring structure and are not connected.

[0013] In the axial direction of the cold jacket body, the water inlet of one of the cold jacket bodies and the water inlet of the adjacent cold jacket body are located on the same side of the cold jacket body.

[0014] In one possible implementation, a plurality of stiffeners are also included, arranged alternately in the cooling cavity along the axial direction of the cooling body, and the plurality of stiffeners divide the cooling cavity into a plurality of interconnected sub-cooling cavities.

[0015] In one possible implementation, a connecting plate is also included, which is disposed at the splicing position of two adjacent cold jacket bodies, and the two adjacent cold jacket bodies are connected by the connecting plate.

[0016] In one possible implementation, the cooling jacket body includes an inner ring and an outer ring, the cooling cavity is formed between the inner ring and the outer ring, and the ring wall of the inner ring facing away from the cooling cavity is used to attach the speed reducer.

[0017] In one possible implementation, a support ring is provided between the inner ring and the outer ring of the main body, and the support ring is tightened against the opposing ring walls of the inner ring and the outer ring of the main body; the support ring has a ring-shaped structure and is adapted to the shape of the cold sleeve body.

[0018] The cooling water jacket provided in this embodiment adopts an external design. Compared with an internal cooling device, it does not require significant modifications to the internal structure of the reducer during installation, reducing the risk of cooling medium leakage and contaminating the lubricating oil. Operation is also simpler. Furthermore, if the cooling water jacket malfunctions during later maintenance or repair, it can be directly disassembled, repaired, or replaced without complex internal disassembly procedures, greatly shortening maintenance time and improving equipment availability and maintenance efficiency. The ring-shaped structure increases the cooling area of ​​the reducer, enhancing its cooling effect.

[0019] The structure of this application, as well as its other objectives and beneficial effects, will become more apparent from the description of the preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a structure where the cooling water jacket is externally mounted on the reducer, as provided in an embodiment of this application.

[0022] Figure 2 for Figure 1 The left view;

[0023] Figure 3 for Figure 1 The right view;

[0024] Figure 4 This is a schematic diagram of the structure of each cooling water jacket using a separate cooling system, as provided in the embodiments of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100 - Cooling water jacket;

[0027] 110 - Cooling jacket body; 111 - Cooling chamber; 1111 - Sub-cooling chamber; 112 - Water inlet; 113 - Water outlet; 114 - Inner ring of the body; 115 - Outer ring of the body;

[0028] 120-rib plate;

[0029] 130 - Connecting plate; 131 - Nut; 132 - Screw;

[0030] 140-support ring;

[0031] 200- Gearbox. Detailed Implementation

[0032] The main drive of a tunneling machine is a key component that drives the cutterhead rotation. The main drive reducer plays a crucial role in reducing speed and increasing torque, and its performance directly affects the tunneling machine's efficiency. With prolonged operation, the main drive reducer of the tunneling machine experiences severe overheating, leading to machine shutdown. In related technologies, the cooling device is located inside the reducer, making maintenance difficult and limiting its applicability. Furthermore, leaks of the cooling medium pose a risk of contaminating the lubricating oil. Additionally, cooling devices are mostly located at the high-speed gear stage, but this arrangement is insufficient to meet the overall cooling requirements of the reducer, especially for multi-stage reducers; moreover, the cooling area of ​​the cooling device is inadequate.

[0033] To address the aforementioned technical issues, this application provides an externally designed cooling water jacket. Compared to internal cooling devices, this design eliminates the need for significant modifications to the internal structure of the reducer during installation, reducing the risk of cooling medium leakage and lubricant contamination. Operation is also simpler. Furthermore, during later maintenance or repair, if the cooling water jacket malfunctions, it can be directly disassembled, repaired, or replaced without complex internal disassembly procedures, significantly shortening maintenance time and improving equipment availability and maintenance efficiency. The ring-shaped structure increases the cooling area of ​​the reducer, enhancing its cooling effect.

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Reference Figure 1 As shown, this embodiment of the application provides a cooling water jacket 100 externally mounted on a reducer 200. It is understood that, in this embodiment, the cooling water jacket 100 is located outside the reducer 200. Compared to placing the cooling water jacket 100 inside the reducer 200, this eliminates the need for significant modifications to the internal structure of the reducer 200 during installation, reducing the risk of cooling medium leakage and contaminating the lubricating oil. Operation is also simpler. Furthermore, during later maintenance or repair, if the cooling water jacket 100 malfunctions, it can be directly disassembled, repaired, or replaced without a complex internal disassembly process, greatly shortening maintenance time and improving equipment availability and maintenance efficiency.

[0036] Reference Figure 1 As shown, the cooling water jacket 100 includes at least one annular cooling jacket body 110. The cooling jacket body 110 is provided with an inlet 112 and an outlet 113. The inlet 112 is configured to communicate with an external water source, and the outlet 113 is configured to communicate with a cooling device. The cooling jacket body 110 has a cooling cavity 111 inside. The cooling cavity 111 is interconnected with the inlet 112 and the outlet 113. The annular wall of the cooling jacket body 110 on the side away from the cooling cavity 111 is used to attach the reducer 200 to cool the reducer 200.

[0037] In this embodiment, the number of cooling jacket bodies 110 is not limited. For example, there may be one cooling jacket body 110 used to cool the reducer 200; or there may be two cooling jacket bodies 110 used together to cool the reducer 200; or there may be multiple cooling jacket bodies 110 used to cool the reducer 200. This embodiment does not limit the number of cooling jacket bodies 110.

[0038] In this embodiment, the shape of the cooling jacket body 110 is not limited. For example, the cooling jacket body 110 can be annular, square, or other structures. This embodiment primarily uses an annular cooling jacket body 110 as an example. The annular design of the cooling jacket body 110 matches the shape of the reducer 200, making the entire cooling device more compact. This compact structure is significant within the limited space of the tunneling machine, as it not only effectively utilizes space but also does not significantly affect the layout of other components of the tunneling machine.

[0039] Among them, reference Figure 1 As shown, the annular wall of the cold jacket body 110, facing away from the cooling chamber 111, is used to attach the reducer 200, greatly increasing the contact area between them. According to the principle of heat transfer, the larger the contact area, the higher the heat transfer efficiency. When the reducer 200 generates a large amount of heat during operation, the annular inner wall can quickly absorb the heat and rapidly transfer it to the coolant inside the cold jacket body 110. This efficient heat transfer method allows for timely and effective temperature control of the reducer 200, preventing its performance and service life from being affected by excessively high temperatures.

[0040] Understandably, the inlet 112 is configured to connect to an external water source, which can be a low-temperature coolant, and the outlet 113 is configured to connect to a cooling device, which can be a radiator. The cooling water jacket 100 constructs a complete cooling circulation system by setting the inlet 112 connected to the external water source and the outlet 113 connected to the cooling device.

[0041] The cooling process of the cooling water jacket 100 provided in this embodiment is as follows: when the external low-temperature coolant flows into the cooling chamber 111 from the inlet 112, it can quickly absorb the heat generated by the reducer 200, and then flow to the cooling device through the outlet 113 to cool down and be recycled. Moreover, the reasonable space design in the cooling chamber 111 allows the coolant to fully contact the cooling jacket body 110 against the annular wall of the reducer 200, ensuring efficient heat transfer, greatly improving the cooling efficiency of the reducer 200, effectively reducing the operating temperature of the reducer 200, and ensuring its stable operation under high load conditions.

[0042] Therefore, the cooling water jacket 100 provided in this embodiment has higher applicability, and the annular design can increase the cooling area of ​​the reducer 200 and improve the cooling effect of the reducer 200.

[0043] In one possible implementation, there may be one cold jacket body 110, which has a semi-ring structure, with the inlet 112 and the outlet 113 located on opposite sides of the cold jacket body 110 in the axial direction.

[0044] The semi-ring structure of the cooling jacket body 110 offers several advantages. First, it allows for flexible adaptation to different shapes and sizes of equipment. By adjusting parameters such as the curvature and length of the semi-ring, it can closely fit the reducer surface for targeted cooling. Second, the single semi-ring structure helps reduce material usage and space occupation, resulting in a more compact cooling system structure and facilitating miniaturization and lightweight design. Third, compared to a complete ring structure, the single semi-ring structure eliminates the need to completely surround the equipment during installation; it can be directly fitted onto the equipment surface, significantly reducing installation difficulty and operating space requirements, making it particularly suitable for space-constrained equipment layouts.

[0045] The water inlet 112 and water outlet 113 distributed on both sides of the axis make the cold jacket body 110 more evenly stressed during operation, reduce vibration and displacement caused by coolant flow, improve the stability of the cold jacket body 110 after installation, extend the service life of the equipment, and reduce maintenance costs and safety risks during equipment operation.

[0046] For example, the flow path of the coolant is as follows: the coolant flows in from the inlet 112 below the cooling jacket body 110, gradually flows through and fills the cooling chamber 111, and then flows out through the outlet 113 above the cooling jacket body 110.

[0047] In one possible implementation, refer to Figures 1 to 3 As shown, there can be two cold jacket bodies 110, which are spliced ​​together to form a complete ring structure and are interconnected.

[0048] The two cooling jacket bodies 110 are joined together to form a complete ring and are interconnected, allowing the coolant to form a smoother circulation path within the annular channel, achieving all-round, dead-angle-free cooling of the equipment. Compared to a single cooling jacket body 110, the annular structure ensures that all parts of the equipment are in full contact with the coolant, effectively avoiding localized overheating, significantly improving cooling efficiency and uniformity, and ensuring the stability and reliability of the equipment under long-term, high-load operation.

[0049] In addition, the complete annular structure ensures that the pressure generated by the coolant flow is evenly distributed around the equipment, preventing equipment deformation or displacement of the cold jacket body 110 due to unilateral force. The interconnected design of the two cold jacket bodies 110 balances the flow rate and pressure of the coolant in different areas, reduces vibration and noise caused by pressure fluctuations, enhances the stability and durability of the cooling system, and extends the service life of the equipment and the cold jacket body 110.

[0050] In one possible implementation, refer to Figure 1 As shown, in the axial direction of the cold jacket body 110, the outlet 113 of one cold jacket body 110 is connected to the inlet 112 of the other cold jacket body 110 so that the two adjacent cold jacket bodies 110 are connected in series.

[0051] The axial series connection method cleverly utilizes the axial space of the equipment, eliminating the need for additional radial space expansion, making it particularly suitable for space-constrained equipment installation scenarios. The two cooling jacket bodies 110 are arranged sequentially and connected along the axial direction, effectively integrating the cooling system structure and making the overall layout more compact. This upgrades the cooling function without increasing the equipment size, providing strong support for equipment miniaturization and integration design, while reducing equipment installation and transportation costs.

[0052] There are no restrictions on the series connection method. For example, the outlet 113 of one cold jacket body 110 and the inlet 112 of another cold jacket body 110 can be connected by a pipe.

[0053] In one possible implementation, refer to Figure 1 As shown, along the axial direction of the cold jacket body 110, the inlet 112 of one cold jacket body 110 and the outlet 113 of the adjacent cold jacket body 110 are located on the same side of the cold jacket body 110.

[0054] The same-side arrangement helps to reduce the increase in local pressure and flow loss caused by complex bends in the pipeline, allowing the coolant to circulate more smoothly between the main bodies 110 of the cold jacket; on the other hand...

[0055] For example, in this embodiment, refer to Figure 2 and Figure 3 As shown, the coolant flow path is as follows: coolant flows in from the inlet 112 below the left side of the cooling jacket body 110, gradually flows through and fills the cooling chamber 111, and then flows through the outlet 113 above the left side of the cooling jacket body 110 into the inlet 112 above the right side of the cooling jacket body 110, and flows out through the outlet 113 below the right side of the cooling jacket body 110 in the same flow manner. For example, the coolant flow pattern can be referred to... Figure 2 and Figure 3 The arrow indicates the direction.

[0056] In one possible implementation, refer to Figure 4 As shown, there can be two cold jacket bodies 110. The two cold jacket bodies 110 are spliced ​​together to form a complete ring structure and are not connected. In the axial direction of the cold jacket body 110, the water inlet 112 of one cold jacket body 110 and the water inlet 112 of the adjacent cold jacket body 110 are located on the same side of the cold jacket body 110.

[0057] For example, in this embodiment, the flow path of the coolant is as follows: the coolant flows in from the inlet 112 below the left side of the cold jacket body 110, gradually flows through and fills the cooling chamber 111, and then flows out through the outlet 113 above the left side of the cold jacket body 110; or, the coolant flows in from the inlet 112 below the right side of the cold jacket body 110, gradually flows through and fills the cooling chamber 111, and then flows out through the outlet 113 above the right side of the cold jacket body 110.

[0058] It should be noted that there are no restrictions on the positions of the inlet 112 and the outlet 113. For example, the inlet 112 can be above the cooling jacket body 110, and the outlet 113 can be below the cooling jacket body 110.

[0059] In this way, by setting up a separate cooling method, if there are conditions or requirements for using different cooling systems in actual applications, each segmented water jacket can be incorporated into a separate cooling system, and the segmented water jackets are not connected to each other.

[0060] In one possible implementation, refer to Figures 1 to 4 As shown, it may also include multiple stiffeners 120. Along the axial direction of the cooling sleeve body 110, the multiple stiffeners 120 are staggered in the cooling cavity 111, and the multiple stiffeners 120 divide the cooling cavity 111 into multiple interconnected sub-cooling cavities 1111.

[0061] Understandably, the staggered ribs 120 divide the cooling chamber 111 into multiple interconnected sub-cooling chambers 1111. The coolant needs to circulate through different sub-cooling chambers 1111 multiple times, extending its residence time within the cooling chamber 111. This ensures that the coolant has sufficient time to exchange heat with the cooling jacket body 110 and the equipment, achieving deep cooling of the equipment. Compared to a straight-path cooling method, this can more effectively reduce the equipment temperature and ensure stable equipment operation. This extends the cooling path and increases the cooling area, further enhancing the cooling effect.

[0062] It should be noted that the structure of the cooling chamber 111 includes, but is not limited to, the above-described manner. For example, the arrangement of the stiffeners 120 can be changed, but this embodiment does not limit this.

[0063] In one possible implementation, refer to Figure 1 and Figure 4 As shown, it may also include a connecting plate 130, which is disposed at the splicing position of two adjacent cold jacket bodies 110, and the two adjacent cold jacket bodies 110 are connected by the connecting plate 130.

[0064] For example, refer to Figure 1 and Figure 4 As shown, the combination of each segmented water jacket can be achieved by fixing it to the cold jacket body 110 with nuts 131 and screws 132. This embodiment does not limit this.

[0065] By setting up a connecting plate 130, the two cold jacket bodies 110 are firmly connected by bolts or welding, which greatly improves the overall structural strength of the cold jacket bodies 110 after splicing. During equipment operation, even when faced with pressure shocks from coolant flow, equipment vibration, or external mechanical forces, the connecting plate 130 can effectively disperse stress, prevent loosening or displacement at the splicing point of the cold jacket bodies 110, and ensure that the cooling system continues to operate stably and reliably under complex working conditions.

[0066] In one possible implementation, refer to Figure 1 and Figure 4 As shown, the cooling jacket body 110 includes an inner ring 114 and an outer ring 115. The cooling cavity 111 is formed between the inner ring 114 and the outer ring 115. The ring wall of the inner ring 114 facing away from the cooling cavity 111 is used to attach the reducer 200.

[0067] The cooling chamber 111 is located between the inner ring 114 and the outer ring 115 of the main body. The inner ring 114 is in direct contact with the reducer 200, allowing the coolant to efficiently remove the heat generated by the reducer 200 during operation. This close-fitting structural design greatly shortens the heat transfer path, reduces heat loss during the transfer process, and enables rapid and precise cooling of the reducer 200. This effectively avoids performance degradation and component wear caused by overheating, ensuring stable and reliable operation of the reducer 200.

[0068] In addition, the inner ring 114 of the main body is in direct contact with the reducer 200, which not only serves a cooling function but also isolates the reducer 200 from the external environment to a certain extent, preventing dust, impurities, and other foreign objects from entering the reducer 200. This reduces the risk of malfunctions caused by foreign object intrusion and extends the service life of the reducer 200. Meanwhile, the outer ring 115 of the main body provides a robust outer shell protection for the cooling chamber 111, resisting external mechanical collisions and impacts, ensuring the integrity and stability of the cooling system, and further enhancing the overall safety of the equipment.

[0069] In one possible implementation, refer to Figures 1 to 4 As shown, a support ring 140 may be provided between the inner ring 114 and the outer ring 115 of the main body, and the support ring 140 is tightened against the opposing ring walls of the inner ring 114 and the outer ring 115 of the main body. The support ring 140 has a ring-shaped structure and is adapted to the shape of the cold-fitting main body 110.

[0070] By setting the support ring 140, the support ring 140 provides multi-directional support for the cooling jacket body 110, maintaining the predetermined shape and size of the cooling chamber 111, and ensuring that the coolant has a stable and smooth flow space within the chamber. This avoids changes in the cross-section of the cooling chamber 111 due to deformation of the inner or outer ring under pressure, which could lead to increased coolant flow resistance and uneven flow. Therefore, it ensures that the coolant can flow evenly and efficiently through the cooling chamber 111, achieving stable cooling of the reducer 200.

[0071] The cooling water jacket provided in this embodiment adopts an external design. Compared with an internal cooling device, it does not require significant modifications to the internal structure of the reducer during installation, reducing the risk of cooling medium leakage and contaminating the lubricating oil. Operation is also simpler. Furthermore, if the cooling water jacket malfunctions during later maintenance or repair, it can be directly disassembled, repaired, or replaced without complex internal disassembly procedures, greatly shortening maintenance time and improving equipment availability and maintenance efficiency. The ring-shaped structure increases the cooling area of ​​the reducer, enhancing its cooling effect.

[0072] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0073] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0074] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cooling jacket, characterized by, The cooling jacket is externally arranged on the speed reducer, and comprises at least one annular jacket body provided with a water inlet and a water outlet. The jacket body has a cooling cavity therein, which is in communication with the water inlet and the water outlet.

2. The cooling jacket of claim 1, wherein The number of the jacket bodies is one, and the jacket body has a semi-annular structure.

3. The cooling jacket of claim 1, wherein, The number of the jacket bodies is two, and the two jacket bodies are connected to form a complete annular structure.

4. The cooling jacket of claim 3, wherein, In the axial direction of the jacket bodies, the water outlet of one jacket body is in communication with the water inlet of the other jacket body.

5. The cooling jacket of claim 4, wherein, In the axial direction of the jacket bodies, the water inlet of one jacket body is located on the same side of the jacket body as the water outlet of the other jacket body.

6. The cooling jacket of claim 1, wherein, The number of the jacket bodies is two, and the two jacket bodies are connected to form a complete annular structure. In the axial direction of the jacket bodies, the water inlet of one jacket body is located on the same side of the jacket body as the water inlet of the other jacket body.

7. Cooling jacket according to any of claims 1-6, characterized in that The number of the jacket bodies is two, and the two jacket bodies are connected to form a complete annular structure.

8. Cooling jacket according to any of claims 1-6, characterized in that In the axial direction of the jacket bodies, the water inlet of one jacket body is located on the same side of the jacket body as the water inlet of the other jacket body.

9. The cooling jacket according to any one of claims 1-6, characterized in that A plurality of rib plates are arranged in the axial direction of the jacket body, and the rib plates are arranged in the cooling cavity in a staggered manner.

10. The cooling jacket of claim 9, wherein, A connecting plate is arranged at the joint of the two jacket bodies, and the two jacket bodies are connected by the connecting plate. The jacket body comprises an inner ring and an outer ring, and the cooling cavity is formed between the inner ring and the outer ring. A supporting ring is arranged between the inner ring and the outer ring, and the supporting ring is tightly arranged on the opposite ring walls of the inner ring and the outer ring. The supporting ring has an annular structure and is matched with the shape of the jacket body.

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