Continuous cryogenic device

Abstract

The utility model discloses a continuous cryogenic device which is suitable for on-line continuous cryogenic treatment of different line bodies, and improves the efficiency and uniformity of the cryogenic treatment of the line bodies. The continuous cryogenic treatment device comprises a temperature changing device which is composed of at least one temperature adjusting bin set and at least one cryogenic treatment bin, and the temperature adjusting bin at the tail end of each temperature adjusting bin set is tightly connected with the input end of the cryogenic treatment bin; the circulating spraying system comprises a spraying box, a spraying liquid storage box and a plurality of corresponding pipelines, a plurality of sets of spraying heads are arranged in the spraying box, the spraying liquid storage box is communicated to each set of spraying heads through the pipelines, and the spraying heads are located on the upper portion of the interior of the spraying box and conduct spraying operation downwards; a drying device; and a take-up device.

Description

Technical Field

[0001] The utility model relates to the technical field of wire production, and specifically relates to a continuous cryogenic device. Background Art

[0002] The existing cryogenic treatment method is to perform a single cryogenic treatment on products, parts, tooling, etc. of a certain size in a closed bin of a certain size and then take them out. According to actual needs, cryogenic treatments are carried out for the designed number of times. If the above method is used for cryogenic treatment of large-length and large-tonnage wires, the closed bin needs to have sufficient space, and the amount of cryogenic medium used is large, resulting in high costs. At the same time, multiple cryogenic treatment processes are cumbersome and complex, and the cryogenic treatment efficiency is low and the effect is poor.

[0003] Therefore, there is an urgent need to develop a cryogenic treatment device for contact wires that can meet the requirements of online, continuous, efficient, and low-cost cryogenic treatment of large-length and large-tonnage wires. Summary of the Invention

[0004] The purpose of the utility model is to overcome the above deficiencies and provide a continuous cryogenic device that can adapt to the cryogenic treatment of different wires and improve the cryogenic treatment efficiency at the same time.

[0005] A continuous cryogenic device is characterized in that it includes:

[0006] A temperature-changing device, which consists of at least one temperature-adjusting bin group and at least one cryogenic treatment bin. The end of each temperature-adjusting bin group is tightly connected to the input end of the cryogenic treatment bin;

[0007] A circulating spray system, including a spray box;

[0008] A drying device;

[0009] A wire-receiving device;

[0010] The spray box is fixedly arranged behind the cryogenic treatment bin. The output port of the spray box is provided with the drying device, and the wire-receiving device is arranged behind the drying device;

[0011] A spiral cooling pipe is arranged in each temperature-adjusting bin. The central part of the spiral cooling pipe is used to penetrate the wire, and the input end of the spiral cooling pipe is connected to a cryogenic medium;

[0012] A cryogenic medium is introduced into each cryogenic treatment bin;

[0013] A guide roller arranged horizontally is arranged in the cryogenic treatment bin. The surface of the guide roller is provided with an inward concave spiral groove. The wire is spirally wound along the inward concave spiral groove on the surface of the guide roller and then penetrates the outlet end of the cryogenic treatment bin. The cryogenic medium performs cryogenic operation on the wire through the surface of the wire.

[0014] It is further characterized in that:

[0015] Each temperature control bin group includes at least two independent temperature control bins. The temperature control bins within each temperature control bin group are closely connected and only have a line body circulation port for connection.

[0016] It also includes a circulating refrigeration system. The circulating refrigeration system includes a cryogenic medium storage tank, a transformer, an evaporator, a condensation filter, a compressor, a cryogenic medium collection tank, and several pipelines.

[0017] The circulating spray system also includes a spray liquid storage tank and several corresponding pipelines. The spray liquid storage tank is connected to each group of spray heads in the spray box through pipelines. Several groups of spray heads are arranged in the spray box. The spray heads are located above the interior of the spray box and perform spraying operations downward.

[0018] The output end of the spiral cooling pipe is externally connected to the inlet of the condensation filter through a first return pipeline.

[0019] The cryogenic medium outlet at the bottom of each cryogenic treatment bin is connected to the inlet of the condensation filter through a second return pipeline.

[0020] The output end of the cryogenic medium storage tank is sequentially connected to the transformer, a first safety valve, a first one-way valve, and the evaporator. After the cryogenic medium enters the evaporator, it vaporizes. The vaporized cryogenic medium flows into the spiral cooling pipes and cryogenic treatment bins in each temperature control bin respectively according to a set of multiple branch pipelines. Temperature control and display devices and temperature detection devices are provided in both the temperature control bins and the cryogenic treatment bins. Among them, the temperature control and display device is connected to the branch pipelines, and a cryogenic medium flow control valve and a temperature display module are provided. The temperature display module is used to compare the difference between the measured temperature of the bin body by the temperature detection device and the set temperature in real time, and control the flow of the cryogenic medium introduced into the corresponding bin body through the flow control valve according to the difference situation.

[0021] The corresponding outlet of the condensation filter is connected to the cryogenic medium collection tank after passing through the compressor.

[0022] It is further characterized in that:

[0023] Both ends in the length direction of the guide roller are installed with limits through corresponding bearings. The guide roller rotates during operation, and its center is hollow. A number of through ventilation holes are provided on the surface. The setting of the ventilation holes is conducive to the rapid and uniform cryogenic treatment of the line body.

[0024] The bottom of the spray box is a first funnel slope. The bottom of the first funnel slope is connected to a return pipeline. The return pipeline is sequentially connected to a filter and the spray liquid storage tank.

[0025] The bottom of each temperature control bin is a second funnel slope surface, and the bottom of the second funnel slope surface is connected to a condensate return water flow channel, which is communicated to a spray liquid storage tank;

[0026] Preferably, the condensate return water flow channels of the same group of temperature control bin groups form an obliquely downwardly arranged condensate return water flow channel and are communicated to the spray liquid storage tank.

[0027] Preferably, the wire body is a copper and copper alloy contact wire.

[0028] The cryogenic medium collection tank is connected to the cryogenic medium storage tank through a pipeline; or the cryogenic medium collection tank and the cryogenic medium storage tank are the same tank;

[0029] A heating and heat preservation device is arranged inside the spray liquid storage tank, and a temperature controller is arranged outside the spray liquid storage tank;

[0030] A filter, a pressure gauge, a pump and a one-way valve are also arranged on the spray liquid output pipeline;

[0031] All the first return pipelines and the second return pipelines are returned to the return main pipe, and then connected to a second safety valve and a second one-way valve, and then communicated to the inlet of the condensation filter.

[0032] By adopting the present application, at least one group of independent temperature control bin groups and at least one group of cryogenic treatment bins are set according to the performance requirements of the wire body. Each temperature control bin in the temperature control bin group is provided with an independent temperature control system. By respectively controlling the temperature of each temperature control bin, the wire body gradually enters from room temperature to low temperature and ultra-low temperature until it enters the cryogenic treatment temperature, realizing the on-line variable temperature cryogenic treatment of the wire body, effectively avoiding defect problems such as wire body brittle fracture caused by sudden temperature drop; and because a horizontally arranged guide roller is arranged in the cryogenic treatment bin, and an inner concave spiral groove is arranged on the surface of the guide roller, the wire body is spirally wound along the inner concave spiral groove on the surface of the guide roller and then penetrates through the outlet end of the cryogenic treatment bin; the cryogenic treatment time is controlled by three factors: the wire take-up speed of the wire take-up machine, the number of turns of the wire material wound around the guide roller in the cryogenic treatment bin, and the outer diameter size of the guide roller. The present application not only realizes the on-line continuous cryogenic treatment requirement of a large-length wire body, but also improves the wire take-up speed and cryogenic treatment efficiency of the wire body. Description of the Drawings

[0033] Figure 1 It is a schematic structural diagram of a specific embodiment corresponding to the present utility model;

[0034] Figure 2 It is a three-dimensional schematic diagram of the spiral coil pipe adopted by the present utility model;

[0035] Figure 3 It is a front view schematic diagram of the guide roller adopted by the present utility model;

[0036] The names corresponding to the serial numbers in the figure are as follows:

[0037] Temperature-changing device 100, circulating refrigeration system 200, circulating spray system 300, temperature-adjusting bin group 400, and line body 500;

[0038] Cryogenic medium storage tank 1, transformer 2, first safety valve 3, one-way valve 4, cryogenic treatment chamber 5, evaporator 6, temperature control and display device 7, temperature detection device 8, temperature-adjusting bin 9, circulating spray box 10, guide roller 11, concave spiral groove 111, ventilation hole 112, drying device 12, wire take-up machine 13, spray head 14, return pipeline 15, spray liquid temperature controller 16, pump 17, heating and heat preservation device 18, spray liquid storage tank 19, condensate pipeline 20, spiral cooling pipe 21, collection tank 22, pressure gauge 23, condensate filter 24, compressor 25, second safety valve 26, second one-way valve 27. Specific embodiments

[0039] A continuous cryogenic device, as shown in Figures 1 - 3 , which includes a temperature-changing device 100, a circulating refrigeration system 200, a circulating spray system 300, a drying device 12, and a wire take-up device 13;

[0040] The temperature-changing device 100 is composed of at least one temperature-adjusting bin group 400 and at least one cryogenic treatment chamber 5. Each temperature-adjusting bin group 400 includes at least two independent temperature-adjusting bins 9. The temperature-adjusting bins 9 in each temperature-adjusting bin group 400 are closely connected and only have a connected line body circulation port. The temperature-adjusting bin 9 at the end of each temperature-adjusting bin group 400 is closely connected to the input end of the cryogenic treatment chamber 5;

[0041] The circulating refrigeration system 200 includes a cryogenic medium storage tank 1, a transformer 2, a first safety valve 3, a one-way valve 4, an evaporator 6, a second safety valve 26, a second one-way valve 27, a condensate filter 24, a compressor 25, a cryogenic medium collection tank 22, and several pipelines;

[0042] The circulating spray system 300 includes a spray box 10, a spray liquid storage tank 19, and several corresponding pipelines. Several groups of spray heads 14 are arranged in the spray box 10; the spray liquid storage tank 19 is connected to each group of spray heads 14 through pipelines. The spray heads 14 are located above the inside of the spray box 10, are arranged in parallel at intervals along the direction of the line body, and perform spraying operations downward;

[0043] The wire take-up device is specifically a wire take-up machine 13;

[0044] A spray box 10 is fixedly installed behind the cryogenic treatment chamber 5 at the very end of the temperature-changing device 100. A drying device 12 is arranged at the output port of the spray box 10, and a wire take-up machine 13 is arranged behind the drying device 12;

[0045] Each temperature control chamber 9 is provided with a spiral cooling pipe 21. The central part of the spiral cooling pipe 21 is used to penetrate the wire body. The upper input end of the spiral cooling pipe 21 is connected to a cryogenic medium, and the lower output end of the spiral cooling pipe 21 is externally connected to the inlet of an external condensation filter 24 through a first return pipeline;

[0046] Each cryogenic treatment chamber 5 is filled with a cryogenic medium. The bottom cryogenic medium outlets of the cryogenic treatment chambers 5 are all connected to the inlet of the condensation filter 24 through second return pipelines;

[0047] The cryogenic treatment chamber 5 is provided with a horizontally arranged guide roller 11. The surface of the guide roller 11 is provided with an inward concave spiral groove 111. The wire body 500 is spirally wound along the inward concave spiral groove 111 on the surface of the guide roller 11 and then penetrates the outlet end of the cryogenic treatment chamber 5. The cryogenic medium performs cryogenic operation on the wire body 500 through the surface of the wire body 500;

[0048] The output end of the cryogenic medium storage tank 1 is sequentially connected to a transformer 2, a first safety valve 3, a first one-way valve 4, and an evaporator 6. After the cryogenic medium enters the evaporator 6, it vaporizes. The vaporized cryogenic medium flows into the spiral cooling pipes 21 in each temperature control chamber 9 and the cryogenic treatment chambers 5 respectively according to a set of multiple branch pipelines. Temperature control and display devices 7 and temperature detection devices 8 are provided in both the temperature control chambers 9 and the cryogenic treatment chambers 5. Among them, the temperature control and display device 7 is connected to the branch pipeline and is provided with a cryogenic medium flow control valve and a temperature display module. The temperature display module is used to compare the difference between the temperature of the chamber body measured by the temperature detection device 8 and the set temperature in real time, and control the flow rate of the cryogenic medium introduced into the corresponding chamber body through the flow control valve according to the difference situation;

[0049] The corresponding outlet of the condensation filter 24 is connected to the cryogenic medium collection tank 16 through a compressor 25.

[0050] During specific implementation, both ends of the guide roller 11 in the length direction are installed in a limited position through corresponding bearings, rotate for work, and it has an axially hollow structure. A number of through ventilation holes 112 are provided on the surface. The arrangement of the ventilation holes 112 is beneficial to the rapid and uniform cryogenic treatment of the contact wire 500;

[0051] The bottom of the spray box 10 is a first funnel slope. The bottom of the first funnel slope is connected to a return pipeline 15. The return pipeline 15 is sequentially connected to a filter and a spray liquid storage tank 19 to realize the recovery of the spray liquid;

[0052] The bottom of each temperature control chamber 9 is a second funnel slope. The bottom of the second funnel slope is connected to a condensate return water flow channel 20. The condensate return water flow channel 20 is communicated with the spray liquid storage tank 19;

[0053] The cryogenic medium collection tank is connected to the cryogenic medium storage tank through a pipeline, or the cryogenic medium collection tank and the cryogenic medium storage tank are the same tank body, so that the cryogenic medium can be recycled.

[0054] In a specific embodiment, the temperature-changing device 100 is composed of a temperature-adjusting chamber group 400 and a cryogenic treatment chamber 5. The temperature-adjusting chamber group 400 includes four independent temperature-adjusting chambers 9, and the four temperature-adjusting chambers 9 are closely attached and arranged in sequence.

[0055] The condensate return channels 20 of the four temperature-adjusting chambers 9 form a condensate water return channel arranged obliquely downward, and the condensate water return channel 20 communicates with the spray liquid storage tank 19;

[0056] The internal of the spray liquid storage tank 19 is provided with a heating and heat preservation device 18, and the outside of the spray liquid storage tank 19 is provided with a temperature controller 16;

[0057] The spray liquid output pipeline is also provided with a filter, a pressure gauge, a pump 17 and a check valve;

[0058] All the first return pipelines and the second return pipelines return to the return main pipe, and then are connected to the second safety valve 26 and the second check valve 27 and then lead to the inlet of the condensate filter 24.

[0059] In a specific embodiment, pressure gauges 23 are provided on both the evaporator 6 and the compressor 25.

[0060] This device is especially suitable for the on-line continuous cryogenic operation of long wires, such as the on-line continuous cryogenic operation of catenary wire bodies. By setting a plurality of independent temperature-adjusting chambers and cryogenic treatment chambers, and each chamber is provided with an independent temperature control system, by respectively controlling the temperatures of each temperature-adjusting chamber and cryogenic treatment chamber, the wire body gradually enters the low temperature, ultra-low temperature and cryogenic treatment temperature from room temperature, realizing the on-line continuous temperature-changing cryogenic treatment of the wire body, effectively avoiding defects such as wire body brittle fracture caused by sudden temperature drop;

[0061] This application can be adjusted as follows according to the performance requirements of the product: (1) By increasing or decreasing the number of temperature-adjusting chambers and cryogenic treatment chambers, the purpose of slow cooling and repeated cryogenic treatment is achieved; (2) Set the temperatures of the temperature-adjusting chambers in the temperature-changing device to realize multi-mode temperature-changing treatment; (3) The cryogenic treatment time can be adjusted by the wire take-up speed, the size of the temperature-adjusting chamber, the winding condition of the wire body in the cryogenic treatment chamber, the outer diameter size of the guide roller, etc. The utility model has extremely high flexibility and flexibility, and meets the cryogenic treatment requirements of various long wire products;

[0062] A guide roller is arranged in the cryogenic treatment chamber, and the wire body is wound around it for cryogenic treatment, which not only greatly expands the cryogenic treatment time range, makes the applicability of the continuous cryogenic device more extensive, but also saves the equipment floor space;

[0063] By passing a cooling medium through a spiral cooling pipe, indirect cryogenic treatment is carried out on the wire body at its core, which has the following advantages: (1) It can effectively reduce the direct thermal shock of the cryogenic medium on the wire body, not only further avoiding the generation of defects such as cracks, but also reducing the erosion of the cryogenic medium and its impurities on the surface of the wire body, ensuring the surface quality of the product; (2) The set temperature can be quickly reached inside the spiral cooling pipe, and the temperature distribution is uniform, which is conducive to the rapid and high-quality progress of cryogenic treatment; (3) The efficient recovery and reuse of the cryogenic medium are realized;

[0064] The bottom of each temperature control chamber is set as a funnel slope, and its outlet is tightly connected to the condensate recovery pipe. The condensate recovery pipes are tightly connected to form an obliquely downward arranged condensate return water flow channel, which is convenient for condensate recovery and can effectively prevent gas circulation between the temperature control chambers;

[0065] During the operation of this continuous cryogenic device, it has a complete collection and circulation system, which can effectively recycle and reuse liquids such as cryogenic media and spraying liquids, effectively reducing the production cost of products, and avoiding the leakage of harmful substances, achieving the purpose of energy conservation and environmental protection.

[0066] This application sets at least one group of independent temperature control chamber groups and at least one group of cryogenic treatment chambers according to the performance requirements of the wire body. Each temperature control chamber in the temperature control chamber group is equipped with an independent temperature control system. By separately controlling the temperatures of each temperature control chamber and the cryogenic treatment chamber, the purpose of gradually lowering the temperature of the wire body from room temperature to low temperature, ultra-low temperature, and then to the cryogenic treatment temperature is achieved, realizing the on-line continuous variable temperature cryogenic treatment of large-length wire bodies, effectively avoiding defect problems such as wire body brittle fracture caused by sudden temperature drop; A horizontally arranged guiding roller is provided in the cryogenic treatment chamber. The surface of the guiding roller is provided with an inward concave spiral groove and a number of through ventilation holes, and it is an axially hollow structure. At the same time, the cryogenic treatment time can be controlled by three factors: the wire take-up speed of the wire take-up machine, the number of turns of the wire wound around the guiding roller in the cryogenic treatment chamber, and the outer diameter size of the guiding roller. Therefore, this application can not only prepare high-performance wire bodies, but also has low production costs and high efficiency.

[0067] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0068] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A continuous cryogenic device, characterized in that: It includes: The temperature changing device is composed of at least one temperature regulating chamber group and at least one cryogenic treatment chamber, and the end of each temperature regulating chamber group is closely connected to the input end of the cryogenic treatment chamber; Circulating spray system, including a spray box; Drying device; Wire take-up device; The spray box is fixedly arranged at the rear of the cryogenic treatment chamber, the drying device is arranged at the output port of the spray box, and the wire take-up device is arranged at the rear of the drying device; Each of the temperature-adjusting chambers is provided with a spiral cooling pipe, the central portion of the spiral cooling pipe is used to penetrate the wire body, and a cryogenic medium is introduced into the input end of the spiral cooling pipe; A cryogenic medium is introduced into each of the cryogenic treatment chambers; A transversely arranged guide roller is provided in the cryogenic treatment chamber, and a concave spiral groove is provided on the surface of the guide roller. The wire body is spirally wound along the concave spiral groove on the surface of the guide roller and then passes through the outlet end of the cryogenic treatment chamber. The cryogenic medium performs cryogenic operation on the wire body through the surface of the wire body.

2. A continuous cryogenic device according to claim 1, characterized in that: Each temperature regulating chamber group includes at least two independent temperature regulating chambers, and the temperature regulating chambers in each temperature regulating chamber group are closely connected and are only connected by a linear flow opening.

3. A continuous cryogenic device according to claim 1, characterized in that: It also includes a circulating refrigeration system, which includes a cryogenic medium storage tank, a transformer, an evaporator, a condensation filter, a compressor, a cryogenic medium collection tank and a plurality of pipelines.

4. A continuous cryogenic device according to claim 1, characterized in that: The circulating spray system also includes a spray liquid storage tank and a number of corresponding pipes. A number of groups of spray heads are arranged in the spray box. The spray liquid storage tank is connected to each group of spray heads in the spray box through pipes. The spray heads are located above the inside of the spray box and perform spraying operations downward.

5. A continuous cryogenic device according to claim 3, characterized in that: The output end of the spiral cooling tube is connected to the inlet of the condensation filter through the first reflux pipeline; The cryogenic medium outlet at the bottom of each cryogenic treatment chamber is connected to the inlet of the condensation filter through a second reflux pipe.

6. A continuous cryogenic device according to claim 3, characterized in that: The output end of the cryogenic medium storage tank is connected to the transformer, the first safety valve, the first non-return valve and the evaporator in sequence. The cryogenic medium is vaporized after entering the evaporator. The vaporized cryogenic medium flows into the spiral cooling pipes and the cryogenic treatment chamber in each temperature adjustment chamber according to the set multiple groups of branch pipes. The temperature adjustment chamber and the cryogenic treatment chamber are both provided with a temperature control and display device and a temperature detection device, wherein the temperature control and display device is connected to the branch pipe, and is provided with a cryogenic medium flow control valve and a temperature display module. The temperature display module is used to compare the difference between the chamber temperature measured by the temperature detection device and the set temperature in real time, and control the cryogenic medium flow entering the corresponding chamber through the flow control valve according to the difference; The corresponding outlet of the condensation filter is connected to the cryogenic medium collection tank after passing through the compressor.

7. A continuous cryogenic device according to claim 1, characterized in that: The two ends of the guide roller in the length direction are installed by corresponding bearing limiters. The guide roller rotates to work. The axial center of the guide roller is hollow. The surface of the guide roller is provided with a plurality of through ventilation holes.

8. A continuous cryogenic device according to claim 4, characterized in that: The bottom of the spray box is a first funnel slope, the bottom of the first funnel slope is connected to a return pipe, and the return pipe is connected to a filter and a spray liquid storage tank in sequence.

9. A continuous cryogenic device according to claim 4, characterized in that: The bottom of each temperature regulating bin is a second funnel slope, and the condensate return flow channels of the same temperature regulating bin group form a condensate return flow channel arranged obliquely downward, and the condensate return flow channel is connected to the spray liquid storage tank.

Images