Gradient freezing control system for refined gallium

Abstract

The invention discloses a refined gallium gradient freezing control system which specifically comprises the following steps: step 1, a pre-freezing stage; 2, a freezing starting stage; 3, a deep freezing stage; and (4) condensation treatment stage: in the step (1), the filled refined gallium bottles are manually put into a refrigerator in a layered manner, the temperature of the refrigerator is set to a freezing temperature, and a sealing cover of the refrigerator is opened, so that a pre-freezing treatment effect can be achieved, and the refined gallium is uniformly cooled inside and outside in a liquid state. The fine gallium gradient freezing control system provided by the invention can realize automation of the whole production process, including manual auxiliary tray loading of fine gallium, manual auxiliary freezing control box feeding, freezing treatment according to preset parameters and direct packaging after treatment, the whole process is efficient and accurate, data information can be connected to a control center, and the production efficiency is improved. And the production state and efficiency of the refined gallium are remotely supervised, and macroscopic regulation and control on the whole workshop are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refined gallium processing, and particularly relates to a refined gallium gradient freezing control system. BACKGROUND

[0002] The metal gallium production line is an important part of the alumina plant, and the annual output of metal gallium is about 100 tons, which is the key to realizing safe production and intelligentization of the alumina plant. At present, the processes of refined gallium weighing, filling, gradient freezing, packaging, labeling and packaging are all manually performed, and therefore it is necessary to realize automatic weighing and filling of refined gallium and intelligent gradient freezing control.

[0003] At present, the refined gallium freezing is to place the filled refined gallium storage bottle into a refrigerator, set different freezing temperatures according to different refrigerators to realize the gradient freezing control system of refined gallium. The last surface condensation drying of the refined gallium after freezing also needs to be assisted by air drying in an air conditioning environment. The whole process needs manual real-time follow-up of the state of refined gallium. SUMMARY

[0004] The present application discloses a refined gallium gradient freezing control system, which aims to solve the technical problem of the current refined gallium freezing, that is, placing the filled refined gallium storage bottle into a refrigerator, setting different freezing temperatures according to different refrigerators to realize the gradient freezing control system of refined gallium. The last surface condensation drying of the refined gallium after freezing also needs to be assisted by air drying in an air conditioning environment. The whole process needs manual real-time follow-up of the state of refined gallium.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] A refined gallium gradient freezing control system, specifically comprising the following steps:

[0007] Step one: pre-freezing stage;

[0008] Step two: freezing start stage;

[0009] Step three: deep freezing stage;

[0010] Step four: condensation treatment stage.

[0011] In one preferred scheme, in the step one, the filled refined gallium bottle is manually layered into the refrigerator, the temperature of the refrigerator is set to the freezing temperature, and the cover of the refrigerator is opened, which can achieve the effect of pre-freezing treatment, so that the refined gallium is uniformly cooled inside and outside in the liquid state, and is frozen for about 12 hours in the environment of about 0 DEG C, so as to ensure that the refined gallium changes uniformly inside and outside during the condensation process, avoid the phenomenon that the outside of the refined gallium bottle is solidified, but the inside is still in the liquid state, the inside expands to cause cracking and bulging on the surface of the refined gallium, and ensure the final freezing quality of the refined gallium bottle.

[0012] In a preferred scheme, in step three, this stage is the complete solidification stage of the refined gallium, frozen for 36 hours in an environment of -16 DEG C, and the refined gallium is completely converted from liquid to solid in this environment, in step four, this stage is the surface condensation treatment stage of the bottled refined gallium, because the refined gallium at -16 DEG C is directly placed in a room temperature environment, a large amount of condensation will be generated on the surface of the bottled refined gallium, so the internal and external temperature of the refined gallium needs to be slowly increased to room temperature.

[0013] In a preferred scheme, after the steps in steps one to four are completed, the following procedures are required:

[0014] S1: Set up four sets of single gradient temperature controlled refrigerators;

[0015] S2: Equip with special transfer trays and tray racks; for quick in-box and out-box of products, to ensure production efficiency;

[0016] S3: All signals of the refrigerator (temperature signal, humidity signal, pressure signal, valve control signal, exhaust fan control signal, etc.) are connected to PLC, and the PLC system is controlled uniformly; the PLC workstation adopts imported or domestic first-line brand control system, which is safe and reliable. Both local operation on site and remote control in the dispatch room can be realized;

[0017] S4: There is a parameter setting interface to set and adjust the gradient freezing parameters of the freezing system, which can be set on the touch screen interface or the upper computer interface;

[0018] S5: Temperature and humidity parameter display and alarm, the real-time parameters such as temperature and humidity in the refrigerator can be displayed on the visual interface, and when the temperature and humidity parameters exceed the process requirement range, an alarm signal will be sent to prompt the staff to check;

[0019] S6: Production parameters can be saved and used for query, which is convenient for tracing the source when problems occur.

[0020] As can be seen from the above, a refined gallium gradient freezing control system, specifically comprising the following steps: step one: pre-freezing stage; step two: freezing start stage; step three: deep freezing stage; step four: condensation treatment stage. The refined gallium gradient freezing control system provided by the present application has the technical effects of realizing automation of the entire production process, including manual assistance in placing the refined gallium on the tray, manual assistance in feeding the refined gallium into the freezing control box, freezing treatment according to the preset parameters, direct packaging after treatment, efficient and accurate whole process, and connection of data information to the control center for remote monitoring of the production state and efficiency of the refined gallium, which is convenient for macroscopic regulation and control of the entire workshop. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1The overall structure schematic diagram of a refined gallium gradient freezing control system is provided for the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0023] Reference Figure 1 A refined gallium gradient freezing control system is provided, which is mainly divided into four stages:

[0024] Pre-freezing stage: This stage is mainly to uniformly cool the refined gallium in liquid state, freeze for about 12 hours in an environment of about 0 DEG C, ensure uniform change of the refined gallium in the condensation process, avoid the phenomenon that the outer part of the bottled refined gallium is solidified, but the inner part is still in liquid state, the inner expansion causes cracking and bulging on the surface of the refined gallium, and ensure the freezing quality of the final bottled refined gallium;

[0025] Freezing start stage: This stage is the critical state of the refined gallium freezing process, freeze for a certain time in an environment below 0 DEG C, and ensure that the refined gallium starts to solidify;

[0026] Deep freezing stage: This stage is the complete condensation stage of the refined gallium, freeze for 36 hours in an environment of -16 DEG C, and the refined gallium is completely converted from liquid to solid state in this environment.

[0027] Condensation treatment stage: This stage is the surface condensation treatment stage of the bottled refined gallium. Because the refined gallium at -16 DEG C is directly placed in a room temperature environment, a large amount of condensation will be generated on the surface of the bottled refined gallium. Therefore, the temperature inside and outside the refined gallium needs to be slowly raised to room temperature, so that the surface of the bottled refined gallium will not produce condensation after being taken out, and can be directly packaged, packaged and other subsequent processes.

[0028] Considering the production requirements and the rationality of operation, four separate gradient temperature refrigerators are designed, the refrigeration capacity is sufficient to meet the daily production demand of the gallium workshop (3 small vehicles), and the finished products are directly stored in the refrigerators in the form of small vehicle trays, so that one cycle of product production is completed, greatly reducing the labor intensity of workers.

[0029] As a further technical solution of the present application, the original equipment state

[0030] The freezing treatment of the refined gallium is currently completely relied on manual operation:

[0031] The filled refined gallium bottles are manually layered in a refrigerator; the refrigerator temperature is set to freezing temperature, and the refrigerator cover is opened, which can achieve the effect of pre-freezing treatment, avoiding the influence of uneven freezing treatment inside and outside on product quality; after pre-freezing is completed, the refrigerator cover is closed, and deep freezing is carried out according to the freezing requirements, so that the liquid metal gallium is converted into solid state; after the refined gallium is completely frozen, the freezing quality is checked, and then the frozen solid-state bottled gallium is placed on a tray rack, and then all the products are placed under the air outlet of an air conditioner for natural air drying.

[0032] After air drying is completed, subsequent packaging, boxing, packing and storage processes are carried out.

[0033] As a further technical solution of the application, a corresponding solution is proposed for the gradient freezing control requirements of refined gallium.

[0034] S1, four sets of separate gradient temperature control refrigerators are set;

[0035] S2, a dedicated transfer tray and tray rack are provided, which are used for rapid boxing and unboxing of products to ensure production efficiency;

[0036] S3, all signals (temperature signal, humidity signal, pressure signal, valve control signal, exhaust fan control signal, etc.) of the refrigerator are connected to the PLC, and the PLC system is used for unified control; the PLC workstation uses imported or domestic first-line brand control system, which is safe and reliable. It can be operated locally on site, or remotely controlled in the dispatch room;

[0037] S4, there is a parameter setting interface for setting and adjusting the gradient freezing parameters of the freezing system, which can be set on the touch screen interface or the upper computer interface;

[0038] S5, temperature and humidity parameter display and alarm, the real-time parameters such as temperature and humidity in the refrigerator can be displayed on the visual interface. When the temperature and humidity parameters exceed the process requirement range, an alarm signal will be sent to prompt the staff to check;

[0039] S6, production parameters can be saved and used for query, which is convenient for tracing the source when problems occur.

[0040] As a further technical solution of the present application, the bottled liquid refined gallium completed by weighing and filling is manually placed on the tray of the tray rack, and the tray loaded with the bottled refined gallium is manually transferred to the refrigeration control box; after the daily production is completed, the refrigeration control box is closed; the refrigeration control box is opened, the refrigeration parameters are set, and the refrigeration control system is started; during the refrigeration control, the temperature and humidity in the refrigeration control box are regularly inspected, and after the abnormality is found, the problem is timely investigated and handled, and the gradient refrigeration control system will perform refrigeration treatment according to the predetermined process flow. Pre-refrigeration stage, refrigeration start stage, deep refrigeration stage, condensation treatment stage; after the last process is completed, the refrigeration box control system sends a prompt; the staff opens the refrigeration box according to the requirements, checks the refrigeration and condensation treatment effect, and transfers the product to the refined gallium packaging workshop after meeting the requirements to perform subsequent code pasting, packaging, boxing and subsequent processes, and completes the gradient refrigeration control treatment.

[0041] As a further technical solution of the present application, the construction requirements are as follows:

[0042] The "Project Construction Standard Compulsory Regulations" is implemented, project management is strictly strengthened, and various advantages in production and operation, technical management and project design are fully utilized to make the project reach a first-class level in management, quality, civilized construction and work style;

[0043] The construction period management target is to scientifically organize the construction, reasonably arrange the process insertion, and ensure that the contract construction period of the project is realized;

[0044] The quality target is to realize the quality commitment to the owner, take the leading industry level as the target, strictly organize the construction according to the contract terms and the current standard specifications, and the project one-time acceptance qualified rate reaches 100%.

[0045] The site management target is: Safety production target: eliminate all serious personal injury accidents, reduce general accidents, and control the frequency of light injury accidents within 0.8‰.

[0046] As a further technical solution of the present application, the construction site management content is as follows:

[0047] Safe construction: during the construction process, the following ten safety production prohibitions of Aluminum Corporation are strictly implemented: no personnel without "three-level" safety education and training is allowed to work, no personnel without certificate is allowed to engage in special operation, no smoking is allowed in flammable and explosive places, no electrical operation is allowed without work ticket, no operation is allowed in limited space without approval, no high-altitude operation is allowed without safety belt, no maintenance or fault handling is allowed without stopping the machine according to the regulations, no crossing or entering the running equipment and facilities is allowed without permission, no stacking is allowed above the specified height, no entering the production area or construction site after drinking is allowed, the regulations and requirements of the state and local government departments on safety production and civilized construction are strictly followed, and the tenderer's tender price has included any related safety and civilized construction measure cost.

[0048] During construction, the safety of all personnel on the project site is the responsibility of the Contractor. The Contractor shall ensure that all personnel on the site are properly educated in safety and shall strictly comply with the Regulations on Work Safety, take necessary safety precautions, eliminate potential accidents, and be subject to supervision and inspection by safety inspectors in accordance with the law.

[0049] The Contractor shall assign a qualified safety officer to the site to be responsible for and supervise the implementation of the above safety measures. If the Contractor fails to comply with the requirements of the safety facilities or treatment methods at the site, the Employer shall have the right to issue a stop-work order to require rectification until the safety requirements are met. Any losses caused by the stop work shall be the responsibility of the Contractor, and the construction period shall not be extended.

[0050] In a preferred embodiment, the content of civilized construction includes the following: after the completion of the project and before the completion of the handover of the project, the Contractor's equipment, remaining materials and equipment, garbage and various temporary projects shall be cleaned up and removed from the construction site, the entire site and the project shall be kept clean, and the project shall be in a state of use, and the materials and equipment, equipment and temporary projects necessary for the performance of the warranty obligations during the warranty period shall be retained on site before the termination of the warranty liability, and if the Contractor fails to remove all of the Contractor's equipment, remaining materials and equipment, garbage and various temporary projects within a reasonable time allowed by the Employer, the Employer may: (1) entrust others to store the Contractor's equipment, remaining materials and other property of the Contractor; (2) entrust others to clean up and remove the garbage and waste. The costs incurred for the above work shall be borne by the Contractor, and the Employer may deduct them from any payments to be made to the Contractor.

[0051] In a preferred embodiment, the content of environmental protection is as follows:

[0052] The project must strictly comply with the environmental protection provisions to ensure that the surrounding environment is not polluted and damaged, and all effective measures must be provided and installed in accordance with the relevant provisions to prevent any pollution to the environment, and the costs incurred for providing any environmental protection measures shall have been included in the contract price.

[0053] In a preferred embodiment, the construction content is as follows: after the equipment arrives at the user's workshop, the user shall position the equipment according to the layout plan provided; the Company shall send experienced technical personnel to guide the installation, commissioning and trial production of the equipment; the Company shall adjust the equipment to the design capacity within the planned time; during the commissioning period, the Company shall provide free of charge the corresponding spare parts and accessories.

[0054] In a preferred embodiment, the gradient freezing control system specifically includes the following content:

[0055] 1. Gradient freezing needs to be carried out according to the production process;

[0056] 2. Gradient freezing control parameters can be changed;

[0057] 3. With pre-freezing process;

[0058] 4. With air-drying process, can directly deal with surface condensation after freezing;

[0059] 5. Increase the heat preservation treatment capacity, and pipeline blowback cleaning ability, etc. Avoid the adverse effects of residual metal gallium filling line downtime on the equipment

[0060] 6. All freezing processes are realized in a single device, avoiding high-intensity work caused by frequent product transfer.

[0061] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that includes a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0062] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A gallium gradient freezing control system, characterized in that, Specifically, the following steps are included: Step 1: Pre-freezing stage; Step Two: The Initial Freezing Stage; Step 3: Deep freezing stage; Step 4: Condensation treatment stage.

2. The gallium gradient freezing control system according to claim 1, characterized in that, In step one, the filled gallium bottles are manually placed in layers into a refrigerator, the refrigerator temperature is set to freezing temperature, and the refrigerator lid is opened. This can achieve the effect of pre-freezing, so that the gallium is cooled evenly inside and out in a liquid state and frozen at 0°C for 12 hours.

3. The gallium gradient freezing control system according to claim 2, characterized in that, In step two, after pre-freezing is completed, the refrigerator lid needs to be sealed. This stage is the critical state of the gallium freezing process. It is frozen for a certain period of time in an environment below 0°C to ensure that the gallium begins to solidify.

4. The gallium gradient freezing control system according to claim 3, characterized in that, In step three, this stage is the complete solidification stage of refined gallium, which is frozen at -16°C for 36 hours, during which refined gallium completely transforms from liquid to solid.

5. A gallium gradient freezing control system according to claim 4, characterized in that, In step four, this stage is the surface condensation treatment stage for bottled gallium. Since placing the -16°C gallium directly in a room temperature environment will cause a large amount of condensation to form on the surface of the bottled gallium, it is necessary to slowly raise the internal and external temperature of the gallium to room temperature.

6. The gallium gradient freezing control system according to claim 1, characterized in that, To complete steps one through four, the following process is required: S1: Set up 4 sets of refrigerated cabinets with independent gradient temperature control; S2: Equipped with dedicated transfer pallets and pallet racks; used for rapid product loading and unloading, ensuring production efficiency; S3: All signals from the refrigerator are connected to the PLC and controlled uniformly by the PLC system; S4: It has a parameter setting interface to set and adjust the gradient freezing parameters of the refrigeration system, which can be set on the touch screen interface or the host computer interface; S5: Display and alarm for parameters such as temperature and humidity. Real-time parameters such as temperature and humidity inside the refrigerator can be displayed on the visual interface. When the temperature and humidity exceed the process requirements, an alarm signal will be issued to prompt the staff to check. S6: Production parameters can be saved and queried, making it easier to trace the source of problems.

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