Manufacturing device and manufacturing method of cooling type direct current charging pile cable

Abstract

The invention relates to the technical field of cable manufacturing, in particular to a manufacturing device and method for a cooling type direct current charging pile cable, and the manufacturing device comprises an inner cylinder cooling water tank which comprises a water tank body, a cooling cylinder assembly installed in the water tank body, and a circulating cooling assembly. The cooling cylinder assembly comprises a main cooling cylinder, and a flow guide cylinder, a flow increasing cylinder and a guide-out cylinder are sequentially and rotationally connected to the main cooling cylinder in the cooling water flowing direction. According to the invention, cooling water with low temperature enters the main cooling cylinder to efficiently cool a cable main body in the main cooling cylinder, so that the low-temperature cooling water flowing into the water tank body directly acts on the cable main body, and the cooling efficiency of the cooling water input into the circulating water inlet pipe is improved; and the utilization efficiency of low-temperature cooling water is improved, so that the cooling efficiency of the cable main body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable manufacturing, and in particular to a manufacturing device and a manufacturing method for a cooling type DC charging pile cable. Background Art

[0002] With the development of modern industry and increasingly serious environmental issues, new energy electric vehicles are gaining increasing recognition and promotion worldwide. New energy electric vehicles are powered by batteries, and their battery capacity and charging time have become key indicators for evaluating their performance. Currently, new energy electric vehicles are typically charged on DC charging stations, which can achieve high charging power. The DC charging station and new energy electric vehicle are connected using a connector and charging station cable. When a certain load current passes through the cable, the conductor generates heat, causing the cable to heat up, thus limiting the current passing through the cable. Therefore, cables with cooling functions are used to effectively control heat accumulation in the cable during charging and improve charging efficiency.

[0003] For example, the Chinese invention patent with the prior art publication number CN119811772A discloses a liquid-cooled super-charge charging cable and a production process, including an inner cooling tube, two main wire cores arranged side by side in the inner cooling tube, an outer cooling tube spirally wrapped around the outer side of the inner cooling tube, an outer sheath extruded on the outer side of the outer cooling tube, a ground wire, a control wire group and a signal wire group are arranged between the outer cooling tube and the outer sheath, the outer cooling tube and the inner cooling tube are connected at the cable charging gun end, and the liquid cooling medium flows unidirectionally in the inner cooling tube and the outer cooling tube, which can improve the insufficient heat dissipation of the existing super-charge charging pile charging cable; when manufacturing the cooled DC charging pile cable, the Chinese invention patent with the publication number CN120108862A discloses a liquid-cooled charging The cable production process and device include a base, a water outlet box and a drying box, and also include working components. The working components include a water outlet fan, a drying device, an air outlet rack, an air inlet rack, a quick-release guide wheel and an adjustment component. The water outlet fan is fixedly installed on one side of the water outlet box, the drying device is installed on one side of the drying box, the air outlet rack is installed on the top of the drying box, the air inlet rack is installed on the bottom of the drying box, the quick-release guide wheel is installed in the water outlet box and the drying box, and the adjustment component is connected to the drying box to adjust the cable drying distance in the drying box. The drying condition of the cable can be adjusted according to actual conditions and at the same time, the segmented drying of the cable makes the cable drying efficiency higher during the processing process, thereby realizing rapid drying of the surface of the produced liquid-cooled electric pile.

[0004] When the above scheme is implemented, the cable is extruded and formed through the head of the extruder during production, and needs to be cooled and shaped to prevent deformation due to the action of gravity. The cooling method usually adopts water cooling. By adding circulating cooling water in the cooling water tank, the extruded cable is cooled and shaped by the circulating water. In order to improve the cooling efficiency of the cable and regulate the water temperature of the cooling water, the cooling water is usually circulated and cooled by a circulating cooling component. The low-temperature cooling water input into the cooling water tank will mix with the original cooling water body, resulting in the cooling water input into the cooling water tank. The temperature gradually increases before it comes into contact with the cable, making it difficult to directly act on the cable, reducing the cooling effect of the cooling water. Summary of the Invention

[0005] Based on this, it is necessary to provide a manufacturing device and a manufacturing method for a cooling type DC charging pile cable to address the above technical problems, so as to solve the problem in the prior art that the cooling water is circulated and cooled by a circulating cooling component, and the low-temperature cooling water input into the cooling water tank will mix with the original cooling water body, resulting in the cooling water input into the cooling water tank not yet in contact with the cable. The temperature gradually increases, making it difficult to directly act on the cable, thereby reducing the cooling effect of the cooling water.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A manufacturing device for a cooled DC charging pile cable comprises an inner cylinder cooling water trough, wherein the inner cylinder cooling water trough comprises a water trough body, a cooling cylinder assembly installed in the water trough body, and a circulating cooling assembly, wherein the input end of the circulating cooling assembly is communicated with the inner cavity of the water trough body, and the output end of the circulating cooling assembly is communicated with the inner cavity of the cooling cylinder assembly through a circulating water inlet pipe, and the cooling cylinder assembly comprises a main cooling cylinder, on which a guide cylinder, a flow increasing cylinder and a lead-out cylinder are connected in sequence in a rotation along the flow direction of cooling water, an inner flow hole inclined toward the inner cavity of the main cooling cylinder is provided on the guide cylinder, an inner impeller is installed on the inner wall of the flow increasing cylinder, an outer impeller is installed on the outer wall of the flow increasing cylinder, and an outer flow hole inclined toward the outside of the main cooling cylinder is provided on the lead-out cylinder.

[0007] As a preferred embodiment of the application, one end of the water tank body is provided with a filtering treatment chamber, a filter screen plate is rotatably connected in the filtering treatment chamber, the outer wall of the filter screen plate is attached to the inner wall of the filtering treatment chamber, a purification cavity is arranged below the filter screen plate in the inner cavity of the filtering treatment chamber, a blowdown pipe is connected to one end of the filtering treatment chamber in the purification cavity, a filtered water outlet pipe is connected to the other end of the filtering treatment chamber in the purification cavity, the filtered water outlet pipe is connected to the water tank body through a circulating cooling assembly, the filtering treatment chamber is arranged at the cable main body input end of the water tank body, a filtering treatment cavity is formed in the middle of the filtering treatment chamber, and the inner cavity of the water tank body is connected to the filtering treatment cavity.

[0008] As a preferred embodiment of the application, the filter screen plate is a horizontally arranged cylindrical structure, the top of the filter screen plate is an open structure, a driving shaft is fixed to the middle of the filter screen plate and rotatably connected to the filtering treatment chamber, and a pressure sensor one is arranged at the connection between the filter screen plate and the driving shaft.

[0009] As a preferred embodiment of the application, a plug is arranged at the connection between the blowdown pipe and the filtering treatment chamber, and a supporting spring is arranged at the end of the plug away from the filtering treatment chamber.

[0010] As a preferred embodiment of the application, a circulating water outlet pipe is connected to the input end of the circulating cooling assembly, the circulating water outlet pipe is connected to the filtered water outlet pipe and a secondary water outlet pipe through a three-way pipe, the secondary water outlet pipe is connected to the inner cavity of the water tank body, the output end of the circulating cooling assembly is connected to a circulating water inlet pipe, the circulating water inlet pipe is connected to the end of the water tank body away from the filtering treatment chamber, a secondary pipe electromagnetic valve is arranged between the secondary water outlet pipe and the circulating water outlet pipe, and a filter pipe electromagnetic valve is arranged between the filtered water outlet pipe and the circulating water outlet pipe.

[0011] As a preferred embodiment of the application, a driving motor is arranged on the water tank body, the output shaft of the driving motor is connected to the driving shaft, a booster cylinder is connected to the filtered water outlet pipe, a piston plate is slidably connected in the inner cavity of the booster cylinder, the end of the driving shaft is threadedly connected to the piston plate through a screw rod, and a pressure relief electromagnetic valve is arranged between the booster cylinder and the filter screen plate.

[0012] As a preferred embodiment of the manufacturing device of the cooling type direct current charging pile cable, the circulating cooling assembly is provided with an impurity automatic separator, the impurity automatic separator is provided with an automatic filtering and cleaning system, the automatic filtering and cleaning system comprises a main control module, the main control module is signal connected with a circulating switch module, a filtering judgment module and a self-cleaning module, the circulating switch module is signal connected with a vice pipe electromagnetic valve and a filter pipe electromagnetic valve respectively, the filtering judgment module is signal connected with a pressure sensor 1, and the self-cleaning module is signal connected with a driving motor and a pressure relief electromagnetic valve respectively.

[0013] As a preferred embodiment of the manufacturing device of the cooling type direct current charging pile cable, the bottom of the purification cavity is provided with a receiving plate, and the bottom of the receiving plate is provided with a pressure sensor 2, and the filtering judgment module is signal connected with the pressure sensor 2.

[0014] As a preferred embodiment of the manufacturing device of the cooling type direct current charging pile cable, the water tank body is rotatably connected with a plurality of compression rollers, and the cable body passes through the bottom of the compression roller.

[0015] The application further provides a manufacturing method of the cooling type direct current charging pile cable, which adopts the manufacturing device of the cooling type direct current charging pile cable. S1, twisting the conductor: a plurality of filaments are twisted and wrapped outside the liquid cooling pipe, tightly formed and reduced in size to form twisted wires; S2, insulation extrusion: the twisted wires are covered with a conductor to form an insulation layer by an extruder, and a cable body is output; S3, cooling forming: the cable body is cooled and formed by the inner cylinder cooling water tank, and the cable body entering the inner cylinder cooling water tank is efficiently cooled and formed; S4, drying and packaging: the cooled and formed cable body is dried, and the dried cable body is wound and transported to a storage warehouse for storage.

[0016] Compared with the prior art, the application has the following beneficial effects: 1. A manufacturing device and a manufacturing method of a cooled DC charging pile cable provided by the present invention, when the cable body is cooled by cooling water, the cooling water with a lower temperature enters the main cooling cylinder to efficiently cool the cable body inside it, so that the low-temperature cooling water flowing into the water tank body directly acts on the cable body, thereby improving the cooling efficiency of the cooling water input in the circulating water inlet pipe; when the cooling water flows through the guide cylinder rapidly, it drives the external cooling water to enter the guide cylinder through the internal flow hole, and the low-temperature cooling water is circulated. The cooling water in the main cooling cylinder drives the flow increase cylinder to rotate through the inner impeller, thereby driving the external outer impeller to rotate, pushing the cooling water in the water tank body toward the outlet cylinder, accelerating the circulation of the cooling water, and the cooling water entering the outlet cylinder is discharged through the external flow hole and enters the water tank body, thereby improving the utilization efficiency of the low-temperature cooling water, thereby improving the cooling efficiency of the cable body.

[0017] 2. The present invention provides a manufacturing device and a manufacturing method for a cooling type DC charging pile cable. Impurities are filtered through a filter plate located in a filter processing chamber. The purification chamber is filled with filtered clean cooling water. The filter plate is controlled to flip and the connection between the filtered water outlet pipe and the circulating cooling component is closed. At this time, the opening of the filter plate is downward. Since the filter processing chamber is in a closed state, the water inside it does not flow. Therefore, impurities on the filter plate can fall to the purification chamber by gravity. The impurities in the purification chamber are discharged by controlling the opening of the sewage pipe. When the sewage pipe is opened, the impurities in the purification chamber are discharged. At the same time, the water flow in the water tank body will flow to the filter processing chamber to backflush the filter plate, and the filter plate can be rinsed and cleaned simultaneously, thereby reducing manual maintenance costs. By performing automatic cleaning regularly, the cooling water is guaranteed to be clean and avoid affecting the produced cables.

[0018] 3. The present invention provides a manufacturing device and a manufacturing method for a cooling type DC charging pile cable. When it is determined by a pressure sensor that there are a lot of impurities filtered on the filter plate, the driving motor is controlled to drive the active shaft to rotate, thereby controlling the filter plate opening downward. At this time, the active shaft will drive the screw to rotate and push the piston plate to move. The piston plate compresses the inner cavity of the booster cylinder to form a high-pressure state. Impurities on the filter plate gradually fall into the purification chamber. At this time, the pressure relief solenoid valve is controlled to open, and the high-pressure gas in the booster cylinder is quickly injected into the purification chamber of the filter treatment chamber, thereby instantly increasing the water pressure in the purification chamber. The increased water pressure can generate a driving force on the stopper. This driving force is greater than the elastic force of the support spring, thereby pushing the stopper open, so that the cooling water and impurities are quickly discharged through the drain pipe, realizing automatic cleaning and impurity removal, and improving cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A flow chart of the manufacturing method provided by the present invention; Figure 2 The overall structure of the inner tube cooling water tank provided by the present invention is shown in FIG. Figure 1 ; Figure 3 The overall structure of the inner tube cooling water tank provided by the present invention is shown in FIG. Figure 2 ; Figure 4 This is a schematic diagram of the positions of the filtration processing chamber and the cooling cylinder assembly in the water tank body provided by the present invention; Figure 5 This is a schematic diagram of the cooling cylinder assembly structure in the water tank body provided by the present invention; Figure 6 A schematic cross-sectional view of the cooling cylinder assembly provided by the present invention; Figure 7 This is a structural schematic diagram of the filter processing chamber provided by the present invention with the filter plate opening facing upward; Figure 8 This is a schematic structural diagram of the filter processing chamber provided by the present invention with the filter plate opening facing downward; Figure 9 This is a control principle diagram of the automatic filtering and cleaning system for the filter plate provided by the present invention; Figure 10 This is a schematic diagram of the structures of the detection cylinder and the boosting cylinder provided by the present invention; Figure 11 This is a cross-sectional view of the filtration processing chamber provided by the present invention.

[0021] The markings in the figure are as follows: 1. Water tank body; 2. Filtration treatment chamber; 3. Cooling cylinder assembly; 301. Main cooling cylinder; 302. Guide cylinder; 303. Flow increasing cylinder; 304. Derivative cylinder; 305. Inner flow hole; 306. Outer impeller; 307. Inner impeller; 308. Outer flow hole; 4. Automatic impurity separator; 5. Circulation outlet pipe; 6. Filter outlet pipe; 7. Auxiliary outlet pipe; 8. Circulation inlet pipe; 9. Drain pipe; 10. Auxiliary pipe solenoid valve; 11. Drive motor; 12. Filter tube solenoid valve; 13. Booster cylinder; 14. Pressure relief solenoid valve; 15. Filtration treatment chamber; 16. Filter screen plate; 17. Driving shaft; 18. Purification chamber; 19. Piston plate; 20. Stopper; 21. Adapter plate; 22. Pressure sensor 2; 23. Pressure sensor 1; 24. Circulation cooling assembly. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0023] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other unless there is any conflict.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0025] Example 1

[0026] See also Figures 2-6 The present invention provides a manufacturing device for a cooling type DC charging pile cable, comprising an inner tube cooling water tank, the inner tube cooling water tank comprising a water tank body 1, a cooling tube assembly 3 installed in the water tank body 1, and a circulating cooling assembly 24, the input end of the circulating cooling assembly 24 is connected to the inner cavity of the water tank body 1, and the output end of the circulating cooling assembly 24 is connected to the inner cavity of the cooling tube assembly 3 through a circulating water inlet pipe 8, the cooling tube assembly 3 comprises a main cooling tube 301, a guide tube 302, a flow increasing tube 303 and a guide tube 304 are connected to the main cooling tube 301 in sequence along the flow direction of cooling water, an inner flow hole 305 inclined to the inner cavity of the main cooling tube 301 is opened on the guide tube 302, an inner impeller 307 is installed on the inner wall of the flow increasing tube 303, and an outer impeller 307 is installed on the outer wall of the flow increasing tube 303. The impeller 306 and the outlet cylinder 304 are provided with an outer flow hole 308 inclined toward the outside of the main cooling cylinder 301. The cable body enters the main cooling cylinder 301 from one end close to the outlet cylinder 304 and exits through one end close to the guide cylinder 302. The circulating cooling component 24 inputs the cooling water into the main cooling cylinder 301 through the circulating water inlet pipe 8 and gradually flows toward the outlet cylinder 304. When the cable body is cooled by the cooling water, the cooling water with a lower temperature enters the main cooling cylinder 301 to efficiently cool the cable body inside it, so that the low-temperature cooling water flowing into the water tank body 1 directly acts on the cable body, making it difficult for the cooling water input by the circulating water inlet pipe 8 to mix with the cooling water retained in the water tank body 1, thereby improving the cooling efficiency of the cooling water input in the circulating water inlet pipe 8; In addition, the cooling water gradually flows to the outlet tube 304, so that the water temperature of the outlet tube 304 is higher than the water temperature of the guide tube 302, thereby achieving the purpose of step cooling, and the cooling water temperature near the guide tube 302 in the water tank body 1 is lower than the cooling water temperature at the outlet tube 304. Therefore, when the cooling water flows through the guide tube 302 quickly, it drives the external cooling water to enter the guide tube 302 through the internal flow hole 305, so that the low-temperature cooling water is recycled. The cooling water in the main cooling tube 301 drives the flow increaser 303 to rotate through the inner impeller 307. The outer impeller 306 is driven to rotate, pushing the cooling water in the water tank body 1 toward the outlet cylinder 304, accelerating the circulation of the cooling water, and the cooling water entering the outlet cylinder 304 is discharged through the outer flow hole 308 and enters the water tank body 1. The heated cooling water is cooled by the circulating cooling component 24 and input into the main cooling cylinder 301 through the circulating water inlet pipe 8, realizing the effect of circulating cooling, improving the utilization efficiency of the low-temperature cooling water, and thus improving the cooling efficiency of the cable body.

[0027] See also Figure 2 , a filter processing chamber 2 is provided at one end of the water tank body 1, and a filter screen plate 16 is rotatably connected to the inner cavity of the filter processing chamber 2. The outer wall of the filter screen plate 16 fits with the inner wall of the filter processing chamber 2. The inner cavity of the filter processing chamber 2 is located below the filter screen plate 16 and is provided with a purification chamber 18. One end of the filter processing chamber 2 located in the purification chamber 18 is connected to a sewage pipe 9, and the other end of the filter processing chamber 2 located in the purification chamber 18 is connected to a filtered water outlet pipe 6. The other end of the filtered water outlet pipe 6 is connected to the water tank body 1 through a circulating cooling component 24. Cooling water is injected into the water tank body 1, and the cable body passes through the water tank body 1 and is cooled and formed by the cooling water. The circulating cooling component 24 works The cooling water in the water tank body 1 is drawn into it through the filtered water outlet pipe 6, and the cooling water is cooled by the circulating cooling component 24 and then re-injected into the water tank body 1, so that the cable body passing through the water tank body 1 is circulated and cooled to form. In addition, the circulating cooling component 24 is a device for circulating cooling of water bodies in the prior art, which uses semiconductor refrigeration plates or compressors to cool the input water body, and re-inputs the cooled water body into the water tank body 1 through a water pump for the purpose of circulating cooling the water body. This is a prior art well known to people in this field and is not within the scope of protection of this application. Its specific structure and working principle will not be described in detail in this application.

[0028] Through the above structural design, the circulating cooling component 24 pumps the water in the water tank body 1 to the filtering treatment chamber 2, and is filtered by the filter plate 16 in the filtering treatment chamber 2. The filtered impurities are located on the upper part of the filter plate 16. The purification chamber 18 is the filtered clean cooling water. The clean cooling water is input into the circulating cooling component 24 through the filtered water outlet pipe 6 for circulating cooling. When it is necessary to clean the impurities filtered on the filter plate 16, the connection between the filtered water outlet pipe 6 and the circulating cooling component 24 is closed at this time, and the filter plate 16 is controlled to flip 180 degrees so that the opening of the filter plate 16 is downward. Since the filtering treatment chamber 2 is in a closed state, its interior The water body does not flow, so the impurities on the filter plate 16 fall to the purification chamber 18 by gravity. At this time, the impurities in the purification chamber 18 are discharged by controlling the drain pipe 9 to open, and when the drain pipe 9 is opened, the impurities in the purification chamber 18 are discharged, and the water flow in the water tank body 1 will flow to the filtration treatment chamber 2 at the same time to backflush the filter plate 16, which can simultaneously rinse and clean the filter plate 16, and re-circulate and filter the filter plate 16 by controlling the reset of the filter plate 16 and opening the filter outlet pipe 6, thereby reducing the manual maintenance cost. By performing automatic cleaning regularly, the cooling water is guaranteed to be clean and avoid affecting the produced cables.

[0029] Also, see Figures 2-4 The filtering treatment chamber 2 is located at the cable body input end of the water tank body 1. A filtering treatment chamber 15 is opened in the middle of the filtering treatment chamber 2. The inner cavity of the water tank body 1 is connected to the filtering treatment chamber 15. The cable body moves from the filtering treatment chamber 2 to the other end of the water tank body 1. The cooling water flushes the other end of the water tank body 1 and flows to the filtering treatment chamber 2, forming a relative flow with the cable body, thereby better cooling the cable body.

[0030] It is worth mentioning that see Figures 5-8 The filter plate 16 is a cylindrical structure arranged horizontally. The top of the filter plate 16 is an open structure. A driving shaft 17 is fixed in the middle of the filter plate 16 and is rotatably connected to the filter processing chamber 2. A pressure sensor 23 is installed at the connection between the filter plate 16 and the driving shaft 17. The filter plate 16 is driven to rotate by the driving shaft 17, thereby controlling the opening of the filter plate 16 to move upward or downward. Figure 7 As shown, the filter plate 16 is in a filtering state when its opening is upward, as shown in FIG. Figure 8 As shown, the filter plate 16 is in a self-cleaning state when the opening is downward, thereby realizing automatic control of the filter plate 16 in different states. By setting a pressure sensor 23, after the impurities are gradually filtered by the filter plate 16, the impact force of the water flow on the filter plate 16 gradually increases and acts on the pressure sensor 23. By judging the pressure value detected by the pressure sensor 23, it is convenient to judge the amount of impurities filtered on the filter plate 16, which is convenient for cleaning. In addition, as shown in FIG. Figure 11As shown, a plug 20 is provided at the connection point between the drain pipe 9 and the filtration treatment chamber 2. A support spring is installed at the end of the plug 20 away from the filtration treatment chamber 2. The support spring pushes the plug 20 to seal the connection point between the drain pipe 9 and the filtration treatment chamber 2. When the filter plate 16 is in the filtering state, the cooling water is restricted from flowing to the drain pipe 9. When the filter plate 16 is in the self-cleaning state, the plug 20 is used to disengage the blockage of the drain pipe 9, so that the cooling water is discharged together with the impurities, which is convenient for slag discharge.

[0031] In this example, see Figure 2 and Figure 3 The input end of the circulating cooling component 24 is connected to the circulating water outlet pipe 5, and the circulating water outlet pipe 5 is respectively connected to the filtered water outlet pipe 6 and the auxiliary water outlet pipe 7 through a tee pipe. The auxiliary water outlet pipe 7 is connected to the inner cavity of the water tank body 1, and the output end of the circulating cooling component 24 is connected to the circulating water inlet pipe 8. The circulating water inlet pipe 8 is connected to the end of the water tank body 1 away from the filtering treatment chamber 2. A secondary pipe solenoid valve 10 is installed between the auxiliary water outlet pipe 7 and the circulating water outlet pipe 5, and a filter tube solenoid valve 12 is installed between the filtered water outlet pipe 6 and the circulating water outlet pipe 5. When the filter plate 16 is opened upward, it is in the filtering state. At this time, the secondary pipe solenoid valve 10 is in the closed state, and the filter tube solenoid valve 12 is in the closed state. In the open state, the cooling water filtered in the filter treatment chamber 2 flows to the circulating water outlet pipe 5 through the filter outlet pipe 6, and is input into the water tank body 1 through the circulating cooling component 24 and the circulating water inlet pipe 8, forming circulating filtering cooling; when the filter plate 16 is controlled to open and self-clean, the auxiliary pipe solenoid valve 10 is controlled to open and the filter pipe solenoid valve 12 is closed, and the circulating cooling component 24 draws the cooling water in the water tank body 1 through the auxiliary outlet pipe 7 and the circulating water outlet pipe 5, and discharges it through the circulating water inlet pipe 8 for circulating cooling. At this time, the cooling water in the filter treatment chamber 2 is relatively still, which is convenient for self-cleaning of impurities filtered by the filter treatment chamber 2.

[0032] To improve self-cleaning efficiency, see Figure 10 and Figure 11A driving motor 11 is installed on the water tank body 1, and the output shaft of the driving motor 11 is connected to the driving shaft 17. The filtered water outlet pipe 6 is connected to the boosting cylinder 13. The inner cavity of the boosting cylinder 13 is slidably connected to the piston plate 19. The end of the driving shaft 17 is threadedly connected to the piston plate 19 through a screw. A pressure relief solenoid valve 14 is installed between the boosting cylinder 13 and the filter plate 16. When the pressure sensor 23 determines that there are more impurities filtered on the filter plate 16, the driving motor 11 is controlled to work and drive the driving shaft 17 to rotate, thereby controlling the filter plate 16 to open downward. At this time, the driving shaft 17 will drive the screw to rotate and push The movable piston plate 19 moves, and the piston plate 19 compresses the inner cavity of the boost cylinder 13 to form a high-pressure state. Impurities on the filter plate 16 gradually fall into the purification chamber 18. At this time, the pressure relief solenoid valve 14 is controlled to open, and the high-pressure gas in the boost cylinder 13 is quickly injected into the purification chamber 18 of the filter treatment chamber 2, thereby instantly increasing the water pressure in the purification chamber 18. The increased water pressure can generate a driving force on the plug 20. This driving force is greater than the elastic force of the supporting spring, thereby pushing the plug 20 open, so that the cooling water and impurities are quickly discharged through the drain pipe 9, realizing automatic cleaning and impurity removal, and improving cleaning efficiency.

[0033] Preferably, a plurality of pressure rollers are rotatably connected to the water tank body 1, and the cable body passes through the bottom of the pressure rollers. The cable body is limited by the plurality of pressure rollers so that the cable body can be immersed in the cooling water and fully contact with the cooling water.

[0034] Example 2

[0035] The manufacturing device of a cooling type DC charging pile cable provided in Example 1 is further optimized. The difference from Example 1 is that, please refer to Figure 1 and Figure 9, the circulating cooling component 24 is provided with an automatic impurity separator 4, and the automatic impurity separator 4 is equipped with an automatic filtering and cleaning system. The automatic filtering and cleaning system includes a main control module. The main control module signal is connected to a circulating switching module, a filtering judgment module and a self-cleaning module. The circulating switching module is respectively connected to the auxiliary pipe solenoid valve 10 and the filter tube solenoid valve 12 signal, the filtering judgment module is connected to the pressure sensor 23 signal, and the self-cleaning module is respectively connected to the drive motor 11 and the pressure relief solenoid valve 14 signal. When the cable body is circulated and cooled, the main control module sends a signal to the circulating switching module. Filter cooling signal, the circulation switching module controls the circulation cooling component 24 to work, the auxiliary pipe solenoid valve 10 is closed and the filter tube solenoid valve 12 is opened. At the same time, the filter plate 16 is in an upward position. After being filtered by the filter plate 16, the cooling water enters the circulation cooling component 24 through the filter outlet pipe 6 and the circulation outlet pipe 5 for circulation cooling. In this process, the pressure sensor 23 sends the real-time detected pressure value to the filtration judgment module. The filtration judgment module compares the pressure value fed back by the pressure sensor 23 with the preset pressure threshold (the filter judgment module is preset with the impurities filtered by the filter plate 16 exceeding the threshold). When the pressure value fed back by the pressure sensor 23 reaches the preset pressure threshold, it is judged that there are too many impurities on the filter plate 16 and self-cleaning is required. The filtration judgment module feeds back the judgment result to the main control module, and the main control module sends a self-cleaning signal to the circulation switching module and the self-cleaning module. The circulation switching module controls the auxiliary pipe solenoid valve 10 to open and the filter pipe solenoid valve 12 to close. The self-cleaning module controls the drive motor 11 to work and the pressure relief solenoid valve 14 to close. The drive motor 11 works to control the filter plate 16. 6 flips 180 degrees, and impurities gradually fall into the purification chamber 18. After the preset time is reached, the self-cleaning module controls the pressure relief solenoid valve 14 to open. At this time, high-pressure water flows into the purification chamber 18, and the impurities are discharged through the sewage pipe 9. After the impurities are discharged, the main control module sends a filtering and cooling signal to the circulation switching module and the self-cleaning module. At this time, the driving motor 11 controls the filter plate 16 to reverse and reset, the auxiliary pipe solenoid valve 10 is closed, and the filter tube solenoid valve 12 is opened. After being filtered by the filter plate 16, the cooling water enters the circulation cooling component 24 through the filter outlet pipe 6 and the circulation outlet pipe 5 for circulation cooling.

[0036] It is worth mentioning that in order to facilitate the detection of the state of impurities falling into the purification chamber 18 during the self-cleaning process, please refer to Figure 11, a receiving plate 21 is provided at the bottom of the purification chamber 18, and a pressure sensor 22 is installed at the bottom of the receiving plate 21. The filtering judgment module is connected to the pressure sensor 22 signal. When the opening of the filter plate 16 is downward, the filtered impurities gradually fall into the purification chamber 18 by the action of gravity and fall onto the receiving plate 21. At this time, the pressure sensor 22 detects an increase in weight data and sends the weight data to the filtering judgment module. When the filtering judgment module judges that the weight data sent by the pressure sensor 22 gradually increases and remains unchanged, the filtering judgment module gives a judgment that the impurities have completely fallen into the purification chamber 18, and feeds back to the main control module. The main control module sends a self-cleaning signal to the circulation switching module and the self-cleaning module, so as to facilitate the complete discharge of impurities through the sewage pipe 9 by flushing the purification chamber 18, thereby improving the cleaning effect, realizing automatic judgment of the state of filtered impurities falling into the purification chamber 18, and timely cleaning the impurities, realizing automatic and intelligent filtering and self-cleaning effects, and reducing the manual maintenance cycle.

[0037] Please refer to Figure 1 The present invention also provides a method for manufacturing a cooling type DC charging pile cable, comprising the following steps: S1, stranded conductor: multiple single wires are twisted and wrapped around the outside of the liquid cooling pipe, and then pressed into shape to reduce the cable size to form a stranded conductor; S2, insulation extrusion: the stranded wire is covered with the conductor through an extruder to form an insulation layer, and the cable body is output; S3, cooling and forming: The cable body is cooled and formed through the inner tube cooling water tank, which efficiently cools and forms the cable body entering it; S4. Drying and packaging: Dry the cooled and formed cable body, reel it up, and transfer it to a storage bin for storage. Through the above steps, a cooled DC charging pile cable is produced. During the production process, the cable body is cooled and formed by the provided inner tube cooling water tank. The inner tube cooling water tank can improve the utilization efficiency of low-temperature cooling water, thereby improving the cooling efficiency of the cable body.

Claims

1. A manufacturing device for a cooling type DC charging pile cable, characterized in that: The invention comprises an inner tube cooling water tank, wherein the inner tube cooling water tank comprises a water tank body (1), a cooling tube assembly (3) installed in the water tank body (1), and a circulating cooling assembly (24), wherein the input end of the circulating cooling assembly (24) is connected to the inner cavity of the water tank body (1), and the output end of the circulating cooling assembly (24) is connected to the inner cavity of the cooling tube assembly (3) through a circulating water inlet pipe (8), and the cooling tube assembly (3) comprises a main cooling tube (301), and the upper edge of the main cooling tube (301) is connected to the inner cavity of the cooling tube assembly (3). The cooling water flow direction is sequentially connected with a guide tube (302), a flow-increasing tube (303) and a discharge tube (304), wherein the guide tube (302) is provided with an inner flow hole (305) inclined toward the inner cavity of the main cooling tube (301), an inner impeller (307) is installed on the inner wall of the flow-increasing tube (303), an outer impeller (306) is installed on the outer wall of the flow-increasing tube (303), and an outer flow hole (308) inclined toward the outside of the main cooling tube (301) is provided on the discharge tube (304).

2. The manufacturing device of a cooling type DC charging pile cable according to claim 1, characterized in that: A filter treatment chamber (2) is provided at one end of the water tank body (1), and a filter screen plate (16) is rotatably connected to the inner cavity of the filter treatment chamber (2). The outer wall of the filter screen plate (16) is in contact with the inner wall of the filter treatment chamber (2). The inner cavity of the filter treatment chamber (2) is provided with a purification chamber (18) below the filter screen plate (16). One end of the filter treatment chamber (2) located in the purification chamber (18) is connected to a sewage pipe (9), and the other end of the filter treatment chamber (2) located in the purification chamber (18) is connected to a filtered water outlet pipe (6). The other end of the filtered water outlet pipe (6) is connected to the water tank body (1) through a circulating cooling component (24). The filter treatment chamber (2) is located at the cable main body input end of the water tank body (1). A filter treatment chamber (15) is opened in the middle of the filter treatment chamber (2), and the inner cavity of the water tank body (1) is connected to the filter treatment chamber (15).

3. The manufacturing device of a cooling type DC charging pile cable according to claim 2, characterized in that: The filter plate (16) is a cylindrical structure arranged horizontally, and the top of the filter plate (16) is an open structure. A driving shaft (17) rotatably connected to the filter treatment chamber (2) is fixed in the middle of the filter plate (16), and a pressure sensor (23) is installed at the connection between the filter plate (16) and the driving shaft (17).

4. The manufacturing device of a cooling type DC charging pile cable according to claim 3, characterized in that: A stopper (20) is provided at the connection point between the sewage discharge pipe (9) and the filter processing chamber (2), and a support spring is installed at one end of the stopper (20) away from the filter processing chamber (2).

5. The manufacturing device of a cooling type DC charging pile cable according to claim 4, characterized in that: The input end of the circulating cooling component (24) is connected to a circulating water outlet pipe (5), and the circulating water outlet pipe (5) is respectively connected to the filter water outlet pipe (6) and the auxiliary water outlet pipe (7) through a three-way pipe, and the auxiliary water outlet pipe (7) is connected to the inner cavity of the water tank body (1). The output end of the circulating cooling component (24) is connected to a circulating water inlet pipe (8), and the circulating water inlet pipe (8) is connected to an end of the water tank body (1) away from the filter treatment chamber (2). A secondary pipe solenoid valve (10) is installed between the auxiliary water outlet pipe (7) and the circulating water outlet pipe (5), and a filter pipe solenoid valve (12) is installed between the filter water outlet pipe (6) and the circulating water outlet pipe (5).

6. The manufacturing device of a cooling type DC charging pile cable according to claim 5, characterized in that: A driving motor (11) is installed on the water tank body (1), the output shaft of the driving motor (11) is connected to the driving shaft (17), the filtered water outlet pipe (6) is connected to the booster cylinder (13), the inner cavity of the booster cylinder (13) is slidably connected to the piston plate (19), the end of the driving shaft (17) is threadedly connected to the piston plate (19) through a screw, and a pressure relief solenoid valve (14) is installed between the booster cylinder (13) and the filter plate (16).

7. The manufacturing device of a cooling type DC charging pile cable according to claim 6, characterized in that: The circulating cooling component (24) is provided with an automatic impurity separator (4), and the automatic impurity separator (4) is equipped with an automatic filtering and cleaning system, and the automatic filtering and cleaning system includes a main control module, and the main control module is signal-connected to a circulating switching module, a filtering judgment module and a self-cleaning module, the circulating switching module is signal-connected to the auxiliary pipe solenoid valve (10) and the filter pipe solenoid valve (12), the filtering judgment module is signal-connected to the pressure sensor 1 (23), and the self-cleaning module is signal-connected to the driving motor (11) and the pressure relief solenoid valve (14).

8. The manufacturing device of a cooling type DC charging pile cable according to claim 7, characterized in that: A receiving plate (21) is provided at the bottom of the purification chamber (18), a second pressure sensor (22) is installed at the bottom of the receiving plate (21), and the filtering judgment module is signal-connected to the second pressure sensor (22).

9. The manufacturing device of a cooling type DC charging pile cable according to claim 1, characterized in that: A plurality of pressure rollers are rotatably connected to the water tank body (1), and the cable body passes through the bottom of the pressure rollers.

10. A method for manufacturing a cooling type DC charging pile cable, characterized in that: A manufacturing device for a cooling type DC charging pile cable according to any one of claims 1 to 9 comprises the following steps: S1, stranded conductor: multiple single wires are twisted and wrapped around the outside of the liquid cooling pipe, and then pressed into shape to reduce the cable size to form a stranded conductor; S2, insulation extrusion: the stranded wire is covered with the conductor through an extruder to form an insulation layer, and the cable body is output; S3, cooling and forming: The cable body is cooled and formed through the inner tube cooling water tank, which efficiently cools and forms the cable body entering it; S4. Drying and packaging: Dry the cooled and formed cable body, reel it up, and transport it to a storage warehouse for storage.

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