Closed impeller welding water cooling device and water cooling system
By designing a closed impeller welding water cooling device and using cooling water to simultaneously cool down and cool, the thermal stress problem during the closed impeller welding process is solved, ensuring the high accuracy of the impeller and the smooth welding progress.
Patent Information
- Application Number
- CN202510594677.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2025-07-04
AI Technical Summary
In the prior art, the closed impeller has a high temperature during argon arc welding, resulting in high thermal stress, easy deformation, and cannot meet the high-precision requirements.
A closed impeller welding water cooling device is designed, including a water inlet joint, a water-flow rod, a base, an outer sleeve, a pressure gland and a nut. The impeller during the welding process is synchronized by cooling water, and the wheel cover and the roulette are fixed with the outer sleeve to prevent the cooling water from splashing, so as to achieve cooling and cooling of the welding process.
The thermal stress during welding of the wheel cover and the blade is reduced, the risk of impeller deformation is reduced, the impeller production accuracy is ensured, and the water inlet pipe is avoided, and the welding operation is simplified.
Smart Images
Figure CN120244389A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of closed impeller welding, and in particular to a closed impeller welding water cooling device and a water cooling system. Background Art
[0002] At present, the closed impeller is generally manufactured by dividing the impeller into two parts: a wheel disc (with blades) and a wheel cover. The wheel disc (with blades) is integrally cast, and a through hole is opened on the wheel cover, through which the blades on the wheel disc and the wheel cover can be welded together. In order to ensure the welding strength between the wheel cover and the blades, argon arc welding is generally used. Although this greatly enhances the strength of the closed impeller, the disadvantage is that the temperature of argon arc welding is high during welding, and the thermal stress on the wheel cover and the blades is large, which can easily cause a large deformation of the impeller, thereby failing to meet the overall high-precision requirements for the closed impeller. Summary of the invention
[0003] In order to solve the above problems, the present application provides a closed impeller welding water cooling device and a water cooling system, which are cleverly designed and simple in structure. The present application can cool the impeller synchronously when welding the wheel cover and the blades on the wheel disc, and the cooling process will not be affected, which reduces the thermal stress during the welding of the wheel cover and the blades, reduces the risk of deformation of the impeller, and ensures the manufacturing accuracy of the impeller. The technical solutions adopted in the present application are as follows:
[0004] A closed impeller welding water cooling device is suitable for a closed impeller formed by welding a wheel disc and a wheel cover, and is used to cool the closed impeller during the welding process of the wheel disc and the wheel cover, and comprises: a water inlet joint, a water-passing rod, a base, an outer sleeve, a pressure cover and a nut; the base comprises a base body and a connecting shaft, the connecting shaft is perpendicular to the base body, and the radial dimension of the connecting shaft is adapted to the mounting hole of the wheel disc; one end of the water-passing rod is connected to the water inlet joint, and the other end is screwed to an end of the connecting shaft away from the base body, and the water-passing rod is provided with a plurality of guide holes at circumferential intervals; the pressure cover is provided with a nut adapted to the water-passing rod through hole, the pressure cover is passed through the outside of the water-passing rod; the outer sleeve cover is arranged outside the water-passing rod, one end of the outer sleeve is suitable for abutting the edge of the circular hole of the wheel cover, and the other end abuts the pressure cover, and the guide hole is located in the outer sleeve; the nut is screwed to the outside of the water-passing rod and abuts the side of the pressure cover away from the outer sleeve; cooling state: the connecting shaft portion is passed through the mounting hole of the wheel disc, one end of the wheel disc abuts the base body, and the wheel disc and the wheel cover are clamped between the outer sleeve and the base; cooling water enters the water-passing rod through the water inlet joint, and flows out through the guide hole and the blades of the wheel disc in turn.
[0005] Through the mutual cooperation of the water - passing rod, base, nut, gland, and outer sleeve, the clamping and fixing of the wheel cover and wheel disc are achieved, and then the wheel cover and wheel disc can be welded and connected. By setting diversion holes on the water - passing rod, the cooling water entering the water - passing rod from the water inlet joint flows out through the diversion holes and enters the closed - type impeller. The cooling water flowing through the closed - type impeller takes away the heat during the welding process and flows out between the blades of the closed - type impeller, thus realizing the cooling of the closed - type impeller during the welding process. On the one hand, the outer sleeve plays a role in force transmission to fix the wheel cover and wheel disc. On the other hand, the outer sleeve shields the water - passing rod to prevent the cooling water flowing out from the diversion holes from splashing or running to the outside of the wheel cover, thereby affecting the smooth progress of the welding process.
[0006] While the device realizes the clamping and fixing of the wheel cover and wheel disc, it can also realize the cooling of the closed - type impeller during the welding process. By using this device, while welding and connecting the wheel cover and wheel disc, the cooling water can flow through the inside of the closed - type impeller to take away the heat generated during the welding of the closed - type impeller, thus realizing the cooling of the closed - type impeller during the welding process. In this way, the thermal stress generated when the blades on the wheel cover and wheel disc are welded and connected is reduced, the deformation risk of the closed - type impeller is greatly reduced, and the manufacturing precision of the closed - type impeller is ensured.
[0007] In some embodiments, the water inlet joint is a rotary joint.
[0008] By setting the water inlet joint as a rotary joint, the relative rotation of the water - passing rod and the water inlet joint can be realized. When rotating the relatively fixed wheel cover and wheel disc to weld the closed - type impeller circumferentially along the wheel cover, it can avoid the water inlet joint rotating synchronously with the water - passing rod, thereby avoiding the winding and twisting of the water inlet pipe connecting the water inlet joint and ensuring that the water inlet pipe can smoothly supply cooling water to the water inlet joint. If the water inlet joint is not set as a rotary joint, in order to realize the welding of the closed - type impeller, when ensuring that the water inlet pipe does not wind and twist, the welder or welding actuator needs to rotate around the central axis of the closed - type impeller, which increases the welding difficulty and the space required for welding operations.
[0009] In some embodiments, one end of the outer sleeve is adapted to be sealingly connected to the edge of the circular hole of the wheel cover.
[0010] By making the outer sleeve sealingly connected to the wheel cover, the risk of the cooling water flowing out from the contact area between the outer sleeve and the wheel cover can be reduced. If the cooling water flows out to the outside of the wheel cover, it will affect the smooth progress of the welding process.
[0011] In some embodiments, an annular table surface and an annular convex part are provided on the end surface of the end of the outer sleeve away from the gland. The annular table surface and the annular convex part are both coaxial with the outer sleeve. The annular convex part is provided with a clamping groove, and the clamping groove is arranged in a circumferential closed loop along the annular convex part. A sealing ring is installed in the clamping groove, and the sealing ring is used to seal the gap between the wheel cover and the annular convex part; the annular table surface is used to abut against the edge of the round hole of the wheel cover.
[0012] In some embodiments, along the radial direction of the outer sleeve, the annular table surface is located outside the annular convex part, and the clamping groove is arranged on the outer periphery of the annular convex part.
[0013] The annular table surface is located outside the annular convex part, and the clamping groove is arranged on the outer periphery of the annular convex part. Compared with the situation where the annular table surface is located inside the annular convex part and the clamping groove is arranged on the inner periphery of the annular convex part, on the one hand, it is convenient for the processing of the clamping groove, and on the other hand, the sealing performance between the outer sleeve and the wheel cover is improved.
[0014] In some embodiments, the gland is hermetically connected to the outer sleeve, and a sealing gasket is provided between the gland and the nut. The sealing gasket is used to seal the gap between the perforation of the gland and the water passing rod.
[0015] By providing the sealing gasket and hermetically connecting the outer sleeve and the gland, the risk of the cooling water flowing out of the diversion hole and flowing out of the outer sleeve can be reduced. If the cooling water flows out to the outside of the outer sleeve, the cooling water will flow onto the wheel cover along the trend, which will affect the smooth progress of the welding process.
[0016] On the other hand, the present application provides a water cooling system, including a water storage tank, a cooling water circulation supply device and the aforementioned closed impeller welding water cooling device; in the cooling state, the closed impeller welding water cooling device is placed vertically in the water storage tank, and the water storage tank contains cooling water with a preset liquid level height; the water inlet joint of the closed impeller welding water cooling device is communicated with the cooling water circulation supply device through a water inlet pipe, and the water storage tank is communicated with the cooling water circulation supply device through a return pipe; the cooling water circulation supply device is used to supply cooling water to the closed impeller welding water cooling device through the water inlet pipe, and send the cooling water discharged from the closed impeller welding water cooling device into the water storage tank back to the cooling water circulation supply device through the return pipe.
[0017] In the cooling state, by keeping the liquid level height of the cooling water in the water storage tank at a preset height, a part of the wheel disc along the central axis direction of the closed impeller is immersed in the cooling water. Because the cooling water in the water storage tank flows with the water inlet of the water inlet pipe and the water return of the return pipe, the cooling effect of the cooling water on the wheel disc is further improved.
[0018] In some embodiments, flow regulating valves are provided on both the water inlet pipe and the water return pipe.
[0019] By setting the flow regulating valve, flexible control of the height of the cooling water level in the water storage tank can be achieved, facilitating the control of the water level in the water storage tank at a preset height.
[0020] A closed impeller welding water cooling device and a water cooling system provided by the present application have at least one of the following beneficial effects:
[0021] 1. A closed impeller welding water cooling device provided by the present application realizes the clamping and fixing of the hub and the wheel disc through the mutual cooperation of the water passing rod, the base, the nut, the gland and the outer sleeve, and then the hub and the wheel disc can be welded and connected. By arranging diversion holes on the water passing rod, the cooling water entering the water passing rod from the water inlet joint flows out through the diversion holes and enters the closed impeller. The cooling water flowing through the closed impeller takes away the heat generated during the welding process and flows out between the blades of the closed impeller, thus realizing the cooling of the closed impeller during the welding process. On the one hand, the outer sleeve plays a role in force transmission to fix the hub and the wheel disc, and on the other hand, the outer sleeve shields the water passing rod to prevent the cooling water flowing out of the diversion holes from splashing or running to the outside of the hub, thereby affecting the smooth progress of the welding process. While realizing the clamping and fixing of the hub and the wheel disc, the device can also realize the cooling of the closed impeller during the welding process. By using this device, the hub and the wheel disc can be welded and connected, and at the same time, the heat generated during the welding process of the closed impeller can be taken away by the cooling water flowing through the inside of the closed impeller, so as to realize the cooling of the closed impeller during the welding process, thus reducing the thermal stress generated when the blades on the hub and the wheel disc are welded and connected, greatly reducing the deformation risk of the closed impeller, and ensuring the manufacturing precision of the closed impeller.
[0022] 2. A closed impeller welding water cooling device provided by the present application sets the water inlet joint as a rotary joint, so that the relative rotation of the water passing rod and the water inlet joint can be realized. When rotating the relatively fixed hub and wheel disc to weld the closed impeller along the circumferential direction of the hub, it can be avoided that the water inlet joint rotates synchronously with the water passing rod, thereby avoiding the winding and twisting of the water inlet pipe connected to the water inlet joint and ensuring that the water inlet pipe can smoothly supply cooling water to the water inlet joint. If the water inlet joint is not set as a rotary joint, in order to realize the welding of the closed impeller, when ensuring that the water inlet pipe does not wind and twist, the welder or the welding actuator needs to rotate around the central axis of the closed impeller, which increases the welding difficulty and the space required for welding operations.
[0023] 3. The closed - type impeller welding water - cooling device provided by the present application can reduce the risk that the cooling water flowing out from the diversion holes flows out from the abutting part between the outer sleeve and the wheel cover by making the outer sleeve and the wheel cover be hermetically connected. If the cooling water flows out to the outside of the wheel cover, it will affect the smooth progress of the welding process.
[0024] 4. In the closed - type impeller welding water - cooling device provided by the present application, the annular table surface is located outside the annular convex part, and the clamping groove is arranged on the outer circumference of the annular convex part. Compared with the situation where the annular table surface is located inside the annular convex part and the clamping groove is arranged on the inner circumference of the annular convex part, on the one hand, it is convenient for the processing of the clamping groove, and on the other hand, the sealing performance between the outer sleeve and the wheel cover is improved.
[0025] 5. The closed - type impeller welding water - cooling device provided by the present application can reduce the risk that the cooling water flowing out from the diversion holes flows out of the outer sleeve by setting a sealing gasket and making the outer sleeve and the gland be hermetically connected. If the cooling water flows out to the outside of the outer sleeve, the cooling water will flow onto the wheel cover along the trend, which will affect the smooth progress of the welding process.
[0026] 6. In a water - cooling system provided by the present application, in the cooling state, by keeping the liquid level height of the cooling water in the water storage tank at a preset height, a part of the wheel disc along the central axis direction of the closed - type impeller is immersed in the cooling water. Because the cooling water in the water storage tank flows with the water inlet of the water inlet pipe and the water return of the water return pipe, the cooling effect of the cooling water on the wheel disc is further improved.
[0027] 7. In a water - cooling system provided by the present application, by setting a flow regulating valve, the flexible control of the liquid level height of the cooling water in the water storage tank can be realized, which is convenient for controlling the liquid level height in the water storage tank at the preset height. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The following will further illustrate the above - mentioned characteristics, technical features, advantages and their implementation manners of a closed - type impeller welding water - cooling device and a water - cooling system in a clear and understandable manner in combination with the drawings of the preferred embodiments:
[0029] Figure 1 is the overall structural schematic diagram of an embodiment of the closed - type impeller welding water - cooling device;
[0030] Figure 2 is Figure 1 the exploded view of the embodiment;
[0031] Figure 3 is Figure 1 the sectional view of the embodiment;
[0032] Figure 4 is the structural schematic diagram of the water - passing rod;
[0033] Figure 5It is a schematic structural diagram of the base;
[0034] Figure 6 It is a schematic structural diagram of the outer sleeve;
[0035] Figure 7 It is a schematic diagram before welding when the wheel cover and the wheel disc are positioned;
[0036] Figure 8 It is a schematic structural diagram of the wheel cover and the wheel disc;
[0037] Figure 9 It is a schematic diagram of the composition of the water cooling system.
[0038] Explanation of the reference numerals in the drawings:
[0039] Closed impeller welded water cooling device 1, water inlet joint 11, water passing rod 12, diversion hole 121, base 13, base body part 131, connecting shaft part 132, outer sleeve 14, annular table surface 141, annular convex part 142, card slot 1421, sealing ring 1422, gland 15, perforation 151, sealing gasket 152, sealing ring 153, nut 16, wheel cover 2, round hole 21, wheel disc 3, blade 31, mounting hole 32, water storage tank 4, cooling water circulation supply device 5, water inlet pipe 6, water return pipe 7, flow regulating valve 8. Specific embodiments
[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can be obtained.
[0041] To make the drawings concise, only the parts related to the present application are schematically shown in each drawing, and they do not represent their actual structures as products. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation.
[0042] It should also be further understood that the term "and / or" used in the description and claims of the present application refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.
[0043] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.
[0044] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0045] Reference Figures 1-5 、 Figure 7 、 Figure 8 This application provides a closed impeller welding water cooling device, which is applicable to a closed impeller formed by welding a wheel disc 3 and a wheel cover 2, and is used to cool the closed impeller during the welding process of the wheel disc 3 and the wheel cover 2. It includes: a water inlet joint 11, a water passing rod 12, a base 13, an outer sleeve 14, a gland 15, and a nut 16;
[0046] The base 13 includes a base body part 131 and a connecting shaft part 132. The connecting shaft part 132 is perpendicular to the base body part 131, and the radial dimension of the connecting shaft part 132 is adapted to the mounting hole 32 of the wheel disc 3; one end of the water passing rod 12 is connected to the water inlet joint 11, and the other end is screwed to the end of the connecting shaft part 132 away from the base body part 131. A plurality of diversion holes 121 are arranged at circumferential intervals of the water passing rod 12; the gland 15 is provided with a perforation 151 adapted to the water passing rod 12, and the gland 15 is sleeved outside the water passing rod 12; the outer sleeve 14 is sleeved outside the water passing rod 12. One end of the outer sleeve 14 is adapted to abut against the edge of the circular hole 21 of the wheel cover 2, and the other end abuts against the gland 15. The diversion holes 121 are located inside the outer sleeve 14; the nut 16 is screwed outside the water passing rod 12 and abuts against the side of the gland 15 away from the outer sleeve 14;
[0047] Cooling state: The connecting shaft part 132 passes through the mounting hole 32 of the wheel disc 3. One end of the wheel disc 3 abuts against the base body part 131, and the wheel disc 3 and the wheel cover 2 are clamped between the outer sleeve 14 and the base 13; the cooling water enters the water passing rod 12 through the water inlet joint 11 and then flows out successively through the diversion holes 121 and the blades 31 of the wheel disc 3.
[0048] Through the mutual cooperation of the water - passing rod 12, the base 13, the nut 16, the gland 15 and the outer sleeve 14, the clamping and fixing of the wheel cover 2 and the wheel disc 3 are realized, and then the wheel cover 2 and the wheel disc 3 can be welded and connected. By arranging a diversion hole 121 on the water - passing rod 12, the cooling water entering the water - passing rod 12 from the water inlet joint 11 flows out through the diversion hole 121 and enters into the closed - type impeller. The cooling water flowing through the closed - type impeller takes away the heat generated during the welding process and flows out between the blades 31 of the closed - type impeller, thus realizing the cooling of the closed - type impeller during the welding process. On the one hand, the outer sleeve 14 plays a role in force transmission to fix the wheel cover 2 and the wheel disc 3. On the other hand, the outer sleeve 14 shields the water - passing rod 12 to prevent the cooling water flowing out from the diversion hole 121 from splashing or running to the outside of the wheel cover 2, thereby affecting the smooth progress of the welding process.
[0049] It can be understood that while the device realizes the clamping and fixing of the wheel cover 2 and the wheel disc 3, it can also realize the cooling of the closed - type impeller during the welding process. By using this device, when the wheel cover 2 and the wheel disc 3 are welded and connected, the cooling water can flow through the inside of the closed - type impeller to take away the heat generated during the welding process of the closed - type impeller, thus realizing the cooling of the closed - type impeller during the welding process. In this way, the thermal stress generated when the blades 31 on the wheel cover 2 and the wheel disc 3 are welded and connected is reduced, the deformation risk of the closed - type impeller is greatly reduced, and the manufacturing precision of the closed - type impeller is ensured.
[0050] It should be noted that, in one embodiment, the water inlet joint 11 is preferably a rotary joint that can rotate relative to the water - passing rod 12. By setting the water inlet joint 11 as a rotary joint, the relative rotation of the water - passing rod 12 and the water inlet joint 11 can be realized. When rotating the relatively fixed wheel cover 2 and wheel disc 3 to weld the closed - type impeller circumferentially along the wheel cover 2, it can avoid the water inlet joint 11 rotating synchronously with the water - passing rod 12, thereby avoiding the winding and twisting of the water inlet pipe 6 connected to the water inlet joint 11 and ensuring that the water inlet pipe 6 can smoothly supply cooling water to the water inlet joint 11. If the water inlet joint 11 is not set as a rotary joint, in order to realize the welding of the closed - type impeller, when ensuring that the water inlet pipe 6 does not wind and twist, the welder or the welding actuator needs to rotate around the central axis of the closed - type impeller, which increases the welding difficulty and the space required for welding operations.
[0051] In one embodiment, one end of the outer sleeve 14 is suitable for sealing connection with the edge of the round hole 21 of the wheel cover 2. It is easy to understand that by making the outer sleeve 14 and the wheel cover 2 in sealed connection, the risk that the cooling water flowing out from the diversion hole 121 flows out from the abutting part of the outer sleeve 14 and the wheel cover 2 can be reduced. If the cooling water flows out to the outside of the wheel cover 2, it will affect the smooth progress of the welding process.
[0052] Reference Figure 2 、 Figure 3, Figure 6 In one embodiment, an annular table surface 141 and an annular protrusion 142 are provided on the end surface of one end of the outer sleeve 14 away from the gland 15. The annular table surface 141 and the annular protrusion 142 are both coaxial with the outer sleeve 14. A clamping groove 1421 is provided on the annular protrusion 142. The clamping groove 1421 is arranged in a circumferential closed loop along the annular protrusion 142. A sealing ring 1422 is installed in the clamping groove 1421. The sealing ring 1422 is used to seal the gap between the wheel cover 2 and the annular protrusion 142; the annular table surface 141 is used to abut against the edge of the round hole 21 of the wheel cover 2.
[0053] It can be understood that by providing the annular table surface 141, the abutment between the outer sleeve 14 and the wheel cover 2 can be realized. By providing the clamping groove 1421 and the sealing ring 1422 on the annular protrusion 142, the sealing between the outer sleeve 14 and the wheel cover 2 can be realized.
[0054] In a specific embodiment, along the radial direction of the outer sleeve 14, the annular table surface 141 is located inside the annular protrusion 142, and the clamping groove 1421 is provided on the inner circumference of the annular protrusion 142.
[0055] Reference Figure 2 , Figure 3 , Figure 6 In another specific embodiment, along the radial direction of the outer sleeve 14, the annular table surface 141 is located outside the annular protrusion 142, and the clamping groove 1421 is provided on the outer circumference of the annular protrusion 142. Compared with the annular table surface 141 being located inside the annular protrusion 142 and the clamping groove 1421 being provided on the inner circumference of the annular protrusion 142, on the one hand, it is convenient for the processing of the clamping groove 1421, and on the other hand, the sealing performance between the outer sleeve 14 and the wheel cover 2 is improved.
[0056] Reference Figures 1-3 In one embodiment, the gland 15 is hermetically connected to the outer sleeve 14. A sealing gasket 152 is provided between the gland 15 and the nut 16. The sealing gasket 152 is used to seal the gap between the through hole 151 of the gland 15 and the water passing rod 12. It is easy to understand that by providing the sealing gasket 152 and hermetically connecting the outer sleeve 14 and the gland 15, the risk of the cooling water flowing out of the diversion hole 121 and flowing outside the outer sleeve 14 can be reduced. If the cooling water flows outside the outer sleeve 14, the cooling water will flow onto the wheel cover 2 along the trend, which will affect the smooth progress of the welding process. It can be understood that there are various specific ways to realize the hermetic connection between the gland 15 and the outer sleeve 14. For example, Figure 3As shown, the pressure cover 15 is buckled on the end of the outer sleeve 14 away from the base 13, and the inner wall of the pressure cover 15 is provided with a groove for accommodating the sealing ring 153, and the sealing ring 153 is installed in the groove. For another example, the pressure cover 15 is buckled on the end of the outer sleeve 14 away from the base 13, and the outer wall of the end of the outer sleeve 14 away from the base 13 is provided with a groove for accommodating the sealing ring, and the sealing ring is installed in the groove.
[0057] On the other hand, reference Figure 9 The present application provides a water cooling system, comprising a water storage tank 4, a cooling water circulation supply device 5 and the aforementioned closed impeller welding water cooling device 1; in the cooling state, the closed impeller welding water cooling device 1 is placed in the water storage tank 4 in the vertical direction, and the water storage tank 4 contains cooling water with a preset liquid level; the water inlet joint 11 of the closed impeller welding water cooling device 1 is connected with the cooling water circulation supply device 5 through the water inlet pipe 6, and the water storage tank 4 is connected with the cooling water circulation supply device 5 through the return pipe 7; the cooling water circulation supply device 5 is used to supply cooling water to the closed impeller welding water cooling device 1 through the water inlet pipe 6, and to return the cooling water discharged from the closed impeller welding water cooling device 1 to the water storage tank 4 through the return pipe 7 to the cooling water circulation supply device 5.
[0058] It is understandable that by providing the cooling water circulation supply device 5, the circulation supply of cooling water is realized. The structure of the cooling water circulation supply device 5 has various forms, and two of them are exemplarily introduced below:
[0059] The first type: the cooling water circulation supply device 5 includes a water pump and a water storage tank. The water outlet of the water pump is connected to the water inlet joint 11 through the water inlet pipe 6. The return pipe 7 connects the water storage tank 4 with the water storage tank. The water storage tank is connected to the water inlet of the water pump, so that the circulating supply of cooling water is realized. In this scheme, the height of the cooling water circulation supply device 5 is lower than the height of the water storage tank 4. The cooling water in the water storage tank 4 will naturally flow back to the water storage tank under the action of gravity.
[0060] The second type: the cooling water circulation supply device 5 includes a water pump and a water storage tank, the water outlet of the water pump is connected to the water storage tank, the water storage tank 4 and the water inlet of the water pump are connected through the return pipe 7, and the water storage tank is connected to the water inlet joint 11 through the water inlet pipe 6, so that the circulating supply of cooling water is realized. It should be noted that in this scheme, the height of the cooling water circulation supply device 5 is higher than the height of the water storage tank 4, and the cooling water in the water storage tank will naturally flow to the water inlet joint 11 under the action of gravity.
[0061] It can be understood that, compared with the second embodiment, the first embodiment does not need to provide a support frame to support the cooling water circulation supply device 5, which can save costs. In practical applications, the first embodiment is preferred.
[0062] It should be noted that when using this water cooling system, in the cooling state, by keeping the liquid level of the cooling water in the water storage tank 4 at a preset height, a part of the wheel disc 3 along the central axis direction of the closed impeller is immersed in the cooling water. Since the cooling water in the water storage tank 4 flows with the intake of the intake pipe 6 and the return of the return pipe 7, the cooling effect of the cooling water on the wheel disc 3 is further improved.
[0063] Reference Figure 9 , in one embodiment, flow regulating valves 8 are provided on both the intake pipe 6 and the return pipe 7. By setting the flow regulating valves 8, flexible control of the liquid level height of the cooling water in the water storage tank 4 can be achieved, facilitating the control of the liquid level height in the water storage tank 4 at the preset height.
[0064] It should be noted that the above embodiments can be freely combined as needed. The above is only the preferred embodiment of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.
Claims
1. A closed impeller welding water cooling device, applicable to a closed impeller formed by welding a wheel disc and a wheel cover, for cooling the closed impeller during the welding process of the wheel disc and the wheel cover, characterized in that, Comprising: a water inlet joint, a water passing rod, a base, an outer sleeve, a gland and a nut; The base includes a base body part and a connecting shaft part, the connecting shaft part is perpendicular to the base body part, and the radial dimension of the connecting shaft part is adapted to the mounting hole of the wheel disc; One end of the water passing rod is connected to the water inlet joint, and the other end is screwed to one end of the connecting shaft part away from the base body part. A plurality of diversion holes are arranged at circumferential intervals on the water passing rod; The gland is provided with a perforation adapted to the water passing rod, and the gland is sleeved outside the water passing rod; the outer sleeve is sleeved outside the water passing rod. One end of the outer sleeve is adapted to abut against the edge of the circular hole of the wheel cover, and the other end abuts against the gland. The diversion holes are located inside the outer sleeve; the nut is screwed outside the water passing rod and abuts against the side of the gland away from the outer sleeve; Cooling state: The connecting shaft part is inserted into the mounting hole of the wheel disc, one end of the wheel disc abuts against the base body part, and the wheel disc and the wheel cover are clamped between the outer sleeve and the base; Cooling water enters the water passing rod through the water inlet joint and flows out after passing through the diversion holes and the blades of the wheel disc in sequence.
2. The closed impeller welding water cooling device according to claim 1, characterized in that, The water inlet joint is a rotary joint.
3. A closed impeller welding water-cooling device according to claim 1, characterized in that, One end of the outer sleeve is adapted to be hermetically connected to the edge of the circular hole of the wheel cover.
4. The closed impeller welded water cooling device according to claim 3, characterized in that, An annular table surface and an annular protrusion part are provided on the end surface of the end of the outer sleeve away from the gland. The annular table surface and the annular protrusion part are coaxial with the outer sleeve. The annular protrusion part is provided with a clamping groove, and the clamping groove is arranged in a circumferential closed loop along the annular protrusion part. A sealing ring is installed in the clamping groove, and the sealing ring is used to seal the gap between the wheel cover and the annular protrusion part; The annular table surface is used to abut against the edge of the circular hole of the wheel cover.
5. A closed impeller welding water cooling device according to claim 4, characterized in that, Along the radial direction of the outer sleeve, the annular table surface is located outside the annular protrusion part, and the clamping groove is arranged on the outer periphery of the annular protrusion part.
6. The closed impeller welding water cooling device according to claim 1, characterized in that, The gland is hermetically connected to the outer sleeve, and a sealing gasket is provided between the gland and the nut. The sealing gasket is used to seal the gap between the perforation of the gland and the water passing rod.
7. A water cooling system, characterized in that, Comprising a water storage tank, a cooling water circulation supply device and the closed impeller welded water cooling device according to any one of claims 1-6; In the cooling state, the closed impeller welded water cooling device is placed vertically in the water storage tank, and the water storage tank contains cooling water with a preset liquid level height; The water inlet joint of the closed impeller welded water cooling device is communicated with the cooling water circulation supply device through a water inlet pipe, and the water storage tank is communicated with the cooling water circulation supply device through a return pipe; The cooling water circulation supply device is used to supply cooling water to the closed impeller welded water cooling device through the water inlet pipe and send the cooling water discharged from the closed impeller welded water cooling device into the water storage tank back to the cooling water circulation supply device through the return pipe.
8. A water cooling system according to claim 7, characterized in that, Flow regulating valves are provided on both the water inlet pipe and the return pipe.