Weldless flow battery electrolyte container processing mold and molding equipment and method

Abstract

The invention discloses a weldless flow battery electrolyte container machining mold and forming equipment and method.The machining mold comprises a barrel body mold part made of steel and provided with a plurality of mounting notches; the flange mold part is made of an aluminum material, the flange mold part is fixedly connected in a mounting notch reserved in the barrel body mold part, and the heat conduction efficiency of the flange mold part made of the aluminum material is higher than that of the barrel body mold part made of a steel material, so that a flange of a product is formed firstly, and a barrel body of the product is formed later; the forming equipment comprises a heating bin, a movable base, a rotating outer frame, a rotating inner frame and a worm and gear transmission mechanism, the processing mold is installed on the rotating inner frame and achieves continuous rotation in the two mutually perpendicular directions, the cross-linked polyethylene material is used for molding, a product is integrally formed, no welding seam exists, and the structural stability is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of production and processing of special containers for liquid flow battery electrolytes, and specifically relates to a processing mold, molding equipment and method for a seamless liquid flow battery electrolyte container. Background Art

[0002] Liquid flow energy storage battery is a new type of electrochemical long-term energy storage technology, which is mainly composed of three parts: battery stack system, electrolyte storage system and electronic control system. It has the advantages of high safety, large capacity, long life, environmental friendliness, fast response speed and freedom of site selection.

[0003] Existing liquid flow battery electrolyte storage containers mainly use polypropylene (PPH) wrapped welded storage tanks, which have many defects in anti-aging, mechanical properties, anti-leakage, etc., and cannot be compatible with liquid flow battery electrolyte storage systems.

[0004] The PPH winding welding container uses polypropylene as raw material, and the manufacturing process is: winding processing of the container cylinder → welding of the container top plate and bottom plate with the cylinder (involving plates) → welding of manholes and flange openings (involving injection molding of pipes and flanges). This manufacturing process has inevitable defects, which are mainly manifested in the following aspects:

[0005] 1. The production of PPH containers cannot avoid artificial plastic welding technology, which has low welding strength and poor quality uniformity, especially the flange part, which is prone to leakage and aging, difficult to maintain and high maintenance costs.

[0006] 2. The design life of PPH materials is 8-12 years, which cannot match the long life (20 to 50 years) requirements of flow battery system design.

[0007] 3. Although PPH containers have high strength, they have poor impact resistance and are easily damaged during transportation and installation.

[0008] 4. The PPH container processing process has a low degree of automation, involving winding, plates, pipes, injection molding, plastic welding (very dependent on the number of plastic welding technicians) and multiple processing techniques, with a long processing cycle and low production efficiency.

[0009] In addition, the prior art does not have a molding mold and equipment for a weld-free ultra-large liquid flow battery electrolyte storage container.

[0010] Therefore, how to provide a seamless flow battery electrolyte container processing mold and molding equipment and method is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0011] In view of this, the present invention provides a seamless liquid flow battery electrolyte container processing mold and molding equipment and method, which can solve the problems existing in the existing PPH winding welding container, while ensuring the performance, life, maintenance, safety and convenience of the electrolyte container, while improving production efficiency, so that it can fully meet the needs of the liquid flow battery for the electrolyte container.

[0012] In order to achieve the above object, the present invention adopts the following technical solution: a seamless flow battery electrolyte container processing mold, comprising:

[0013] The barrel body mold part is made of steel and is provided with a plurality of installation notches;

[0014] The flange mold part is made of aluminum and is fixedly connected to the installation notch reserved in the barrel body mold part. The thermal conductivity of the flange mold part made of aluminum is higher than that of the barrel body mold part made of steel, so that the flange of the product is formed first and the barrel body of the product is formed later.

[0015] The beneficial effects of the present invention are as follows: due to the molding of the inlet and outlet flanges of the super-large container, the molding quality of the product flange cannot be guaranteed. If the mold materials are the same, there is no difference in the order of molding the flange and the barrel body, and the molding quality of the product flange cannot be guaranteed. The flange mold part of the present invention adopts aluminum material, and the barrel body mold part adopts steel material. The higher thermal conductivity of aluminum material than steel material is used to ensure that the flange part obtains more heat during the heating process and is formed in advance. The risk of the entire container being scrapped due to the hollow flange is avoided, thereby ensuring the overall molding quality of the container. The processing mold can realize the one-piece molding of the product without welds, and ensure the molding strength and sealing of the product.

[0016] Preferably, an annular reinforcing rib is integrally formed on the outer side of the barrel body mold portion.

[0017] The resulting technical effect is that the barrel body is made of steel and has pressed annular reinforcement ribs to increase the strength of the finished container. It should be noted that the barrel body structure is not limited to a cylindrical shape, but can also be other configurations, such as a prism.

[0018] Preferably, the material of the molded product is cross-linked polyethylene, and the volume of the molded product is 40m 2 ~50m 2 .

[0019] The resulting technical effect is: cross-linked polyethylene, also known as XLPE, is light in weight, low in cost, has a short production cycle and high production efficiency. In addition, XLPE material has excellent impact and puncture resistance, avoiding damage during transportation and installation. The product volume meets the long-term (>4 hours) energy storage needs of large-scale liquid flow batteries.

[0020] The present invention also discloses a molding device using a seamless flow battery electrolyte container processing mold, using the seamless flow battery electrolyte container processing mold, which includes:

[0021] A heating chamber, one side of which is provided with a chamber door, and the heating chamber provides a heating environment for processing the mold;

[0022] A movable base, the movable base can enter the heating chamber, both sides of the movable base are fixed with vertical frames, and the vertical frame on one side is fixed with an outer frame rotating motor and an inner frame rotating motor;

[0023] A rotating outer frame, the rotating outer frame is located between two vertical frames, the middle parts of the two side ends of the rotating outer frame are respectively connected with a rotating shaft and a hollow shaft, the rotating shaft and the hollow shaft are respectively rotatably mounted on the vertical frames through bearings, the hollow shaft is close to a vertical frame on one side where the motor is arranged, the hollow shaft is transmission-connected with the output end of the rotating motor of the outer frame and causes the rotating outer frame to rotate; a power connection shaft is rotationally arranged on the inner side of the hollow shaft, and the power connection shaft is transmission-connected with the output end of the rotating motor of the inner frame;

[0024] A rotating inner frame, the rotating inner frame is located inside the rotating outer frame, two ends of the rotating inner frame are rotatably connected to two ends of the rotating outer frame through support shafts, the rotating direction of the rotating inner frame is perpendicular to the rotating direction of the rotating outer frame, and a plurality of fixing seats for fixing the barrel body mold part are provided on the rotating inner frame;

[0025] A worm gear transmission mechanism is installed on the rotating outer frame, the worm wheel in the worm gear transmission mechanism rotates synchronously with the support shaft, and the worm in the worm gear transmission mechanism is drivingly connected to the power connection shaft.

[0026] The beneficial effect of the present invention is that the molding equipment can produce more than 40m 2 The product container can realize the working process of continuous rotation of the processing mold along two mutually perpendicular axes by rotating the inner frame and the outer frame. In addition, the molding equipment adopts double-point support to improve the bearing capacity and is stable and reliable during operation. The worm gear transmission mechanism can realize the rotation and braking control of the rotating inner frame. Based on the self-locking property of the worm gear transmission, the mold can be effectively controlled when braking and reversing rotation to avoid damage to the transmission components, thereby improving the usability and reliability of the equipment. The heating chamber provides a heating space for the processing mold, thereby realizing the process of melting and molding the internal material.

[0027] Preferably, a ground rail is provided inside the heating chamber and in the direction of the chamber door, and the ground rail extends out of the chamber door. Rollers are rotatably connected to the bottom of the movable base, and the movable base is slidably connected to the ground rail via the rollers to realize the process of entering and exiting the chamber.

[0028] The resulting technical effect is that the process of the molding equipment entering and exiting the heating chamber is realized by using the ground rail, which is convenient to use.

[0029] The resulting technical effect is that a driving motor for controlling the movement of the roller is provided on the mobile base, and the driving motor is connected to an external PLC controller via an electrical signal.

[0030] The resulting technical effect is: since the equipment is heavy, the driving motor is used to realize the on-track movement of the mobile base, and the control of entering and exiting the heating chamber is convenient.

[0031] Preferably, a hot air duct is provided on the top of the heating bin, and the hot air duct is connected to an external natural gas hot air furnace, and the heating temperature and heating time of the heating bin are controlled by an external PLC controller.

[0032] The resulting technical effect is that the heat of the heating chamber comes from an external natural gas hot air furnace, which is environmentally friendly and highly efficient.

[0033] Preferably, one end of the power connection shaft is coaxially fixedly connected to the output shaft of the inner frame rotating motor, and a sprocket is connected to the outer side wall of the other end of the power connection shaft, and a transmission chain is connected to the sprocket, and the transmission chain is connected to the worm gear transmission.

[0034] The resulting technical effect is: the power connecting shaft is used to drive the inner frame rotating motor and the worm gear transmission mechanism, the transmission chain can make up for the space limitation, the transmission chain adapts to complex working environment and is resistant to high temperature.

[0035] Preferably, a plurality of mold branch pipes are provided on the outer side of the barrel body mold portion, the fixed seat has multiple groups and is arranged on the inner circumference of the rotating inner frame, a side U-shaped support plate is provided on the fixed seat, a clamping plate is fixed on the U-shaped support plate, an arc groove for clamping the mold branch pipes is provided on the clamping plate, bolt holes are provided on the bottom wall of the U-shaped support plate and on both sides of the clamping plate, U-shaped screws are connected in the bolt holes, and the mold branch pipes are fixed to the clamping plate by multiple U-shaped screws.

[0036] The resulting technical effect is: the fixed seat is used to support the fixed processing mold, the positioning plate on the fixed seat can realize the positioning support of the mold branch pipe, and rely on the arc groove of the positioning plate to bear most of the weight of the mold, reducing the load force of the U-shaped screw, thereby improving the connection reliability between the mold and the rotating inner frame. It can be understood that the mold is side-entry installed on multiple fixed seats, and most of the load is directly transferred from the fixed seat to the rotating inner frame, avoiding large load forces on the connecting parts and extending their service life.

[0037] The present invention discloses a method for forming a weld-free liquid flow battery electrolyte container, using the above-mentioned forming device, which comprises the following steps:

[0038] Step 1: Prepare the processing mold and the molding equipment, and fix the processing mold on the rotating inner frame of the molding equipment. The molding equipment can cause the processing mold to rotate continuously along two mutually perpendicular axes;

[0039] Step 2: Prepare the cross-linked polyethylene material required for molding the molded product;

[0040] Step 3: Apply a release agent on the inner surface of the processing mold, then place the material in step 2 into the processing mold, and fill it with inert gas for atmosphere protection;

[0041] Step 4: On the basis of step 3, push the molding device into the heating chamber, turn on the molding device and the heating chamber, and make the processing mold rotate and heat;

[0042] Step 5: After heating is completed, the heating chamber and the molding equipment are closed, and the molding equipment is removed from the heating chamber. After the processing mold is cooled, the processing mold is removed from the rotating inner frame and placed on the demoulding tooling position;

[0043] Step 6: Open the processing mold to obtain a preliminary finished product of the cross-linked polyethylene container;

[0044] Step 7: Open the flange of the preliminary finished container;

[0045] Step 8: Install the workpiece inside the container and install the ladder guardrail outside the container;

[0046] Step 9: Based on step 8, high-pressure water cleaning is performed on the inside of the container to remove the plastic powder formed by the flange opening and the installation of the workpiece inside the pipe, and then positive and negative pressure airtightness tests are performed. After passing the test, the container is put into storage.

[0047] The beneficial effects of the present invention are: the container product formed by the cross-linked polyethylene material has no welds, strong integrity, stable structure, not easy to deform, uniform wall thickness, no residual stress, and is not easy to be damaged and leaked in the later stage. In addition, the container product uses a special cross-linked polyethylene material, which has temperature resistance, good mechanical properties, strong insulation performance, chemical resistance and weather resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic diagram of a molding device for processing a weld-free liquid flow battery electrolyte container mold according to the present invention;

[0049] Figure 2 A second schematic diagram of a molding device for processing a weld-free liquid flow battery electrolyte container mold according to the present invention;

[0050] Figure 3 This is a main structural diagram of a molding device for processing a weld-free liquid flow battery electrolyte container according to the present invention;

[0051] Figure 4 for Figure 3 A local large-scale drawing;

[0052] Figure 5 It is a schematic diagram of the worm gear transmission of the forming equipment;

[0053] Figure 6 It is a schematic diagram of a fixing seat of a molding device;

[0054] Figure 7 It is a partial schematic diagram of the installation of the processing mold and the molding equipment of the present invention;

[0055] Figure 8 This is a structural diagram of the processing mold used in the present invention.

[0056] 1 processing mold, 101 barrel body mold part, 102 flange mold part, 103 annular reinforcement rib, 2 heating chamber, 3 moving base, 4 outer frame rotating motor, 5 inner frame rotating motor, 6 rotating outer frame, 7 rotating shaft, 8 hollow shaft, 9 power connection shaft, 10 rotating inner frame, 11 worm gear transmission mechanism, 1101 worm gear, 1102 worm, 12 ground rail, 13 hot air pipe, 14 transmission chain, 15 mold branch pipe, 16 fixed seat, 17 U-shaped support plate, 18 clamping plate, 19 U-shaped screw. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0058] See the attached Figures 1 to 8 According to an embodiment of the present invention, a seamless flow battery electrolyte container processing mold comprises:

[0059] The barrel body mold part 101 is made of steel and can be cylindrical or square. The barrel body mold part 101 is provided with a plurality of mounting notches.

[0060] The flange mold part 102 is made of aluminum. The flange mold part 102 is fixedly connected to the installation notch reserved in the barrel body mold part 101. The thermal conductivity of the flange mold part made of aluminum is higher than that of the barrel body mold part made of steel, so that the flange of the product is formed first and the barrel of the product is formed later. The product flange is formed in advance to avoid product scrapping due to product flange defects, thereby ensuring the production quality of the product.

[0061] In other embodiments, an annular reinforcing rib 103 is integrally formed on the outer side of the barrel body mold portion 101 to improve the structural strength of the mold.

[0062] In some other embodiments, the material of the molded product is special cross-linked polyethylene, and the volume of the molded product is 50m 2 .

[0063] The present invention discloses a molding device for a seamless flow battery electrolyte container processing mold, using the aforementioned seamless flow battery electrolyte container processing mold, which includes:

[0064] Heating chamber 2, one side of which is provided with a chamber door, provides a heating environment for processing mold 1, and the heating chamber has a 50m 2 The volume space above;

[0065] A movable base 3, the movable base 3 can enter the heating chamber 2, and vertical frames are fixed on both sides of the movable base 3, and an outer frame rotating motor 4 and an inner frame rotating motor 5 are fixed on the vertical frame on one side;

[0066] The rotating outer frame 6 is located between the two vertical frames. The middle parts of the two side ends of the rotating outer frame 6 are respectively connected with a rotating shaft 7 and a hollow shaft 8. The rotating shaft 7 and the hollow shaft 8 are respectively rotatably mounted on the vertical frames through bearings. The hollow shaft 8 is close to the vertical frame on one side where the motor is arranged. The hollow shaft 8 is transmission-connected with the output end of the outer frame rotating motor 4 and promotes the rotating outer frame 6 to rotate. The inner side of the hollow shaft 8 is rotationally provided with a power connection shaft 9, which is transmission-connected with the output end of the inner frame rotating motor 5.

[0067] The rotating inner frame 10 is located inside the rotating outer frame 6. The two ends of the rotating inner frame 10 are rotatably connected to the two ends of the rotating outer frame 6 through support shafts. The rotating direction of the rotating inner frame 10 is perpendicular to the rotating direction of the rotating outer frame 6. The rotating inner frame 10 is provided with a plurality of fixing seats 16 for fixing the barrel body mold portion.

[0068] The worm gear transmission mechanism 11 is installed on the rotating outer frame 6 , the worm wheel 1101 in the worm gear transmission mechanism rotates synchronously with the support shaft, and the worm 1102 in the worm gear transmission mechanism is connected to the power connection shaft 9 in a transmission manner.

[0069] This equipment adopts a double-point support mode to meet the load rotation requirements of the processing mold and make the rotation process of the processing mold more stable. The worm gear transmission mechanism relies on its stable transmission and structural self-locking to improve the power control ability, has a strong braking effect, and can also avoid the destructive impact on the molding equipment during reversing rotation.

[0070] In other embodiments, a ground rail 12 is provided inside the heating chamber 2 and in the direction of the chamber door, and the ground rail 12 extends out of the outer side of the chamber door. Rollers are rotatably connected to the bottom of the movable base 3. The movable base 3 is slidably connected to the ground rail 12 through the rollers to realize the process of entering and exiting the chamber.

[0071] In some other embodiments, a driving motor for controlling the movement of the roller is provided on the mobile base 3, and the driving motor is connected to an external PLC controller via an electrical signal and is electrically controlled without the need for manual operation.

[0072] In some other specific embodiments, a hot air duct 13 is provided on the top of the heating bin 2, and the hot air duct 13 is connected to an external natural gas hot air furnace, which has efficient heating and meets the heating needs of a large space. The heating temperature and heating time of the heating bin 2 are controlled by an external PLC controller.

[0073] In other embodiments, one end of the power connection shaft 9 is coaxially fixedly connected to the output shaft of the inner frame rotating motor 5, and a sprocket is connected to the outer wall of the other end of the power connection shaft 9, and a transmission chain 14 is connected to the sprocket. The transmission chain 14 is connected to the worm 1102, and the transmission of the sprocket chain meets the high temperature environment.

[0074] The present invention has two groups of worm gear transmission mechanisms which are respectively arranged on the outer sides of the two ends of the rotating outer frame. It can be understood that the two groups of worm gear transmission mechanisms simultaneously act on the rotating inner frame during the rotation or braking process. The transmission mode driven at both ends is reliable, which can improve the controllability of the rotating inner frame and also have a more stable braking effect during rotation reversal.

[0075] In some other embodiments, a plurality of mold branches 15 are provided on the outer side of the barrel body mold portion 101, there are four groups of fixing seats 16 and they are arranged on the inner circumference of the rotating inner frame 10, a side U-shaped support plate 17 is provided on the fixing seat 16, a clamping plate 18 is fixed on the U-shaped support plate 17, an arc groove for clamping the mold branch pipe is provided on the clamping plate 18, bolt holes are provided on the bottom wall of the U-shaped support plate 17 and on both sides of the clamping plate 18, U-shaped screws 19 are connected to the bolt holes, the mold branch pipe 15 is fixed to the clamping plate 18 by a plurality of U-shaped screws, this method can reduce the load on the screw, when the mold is installed, the mold branch pipe is embedded in the arc groove of the clamping plate, most of the mold load is directly transmitted from the fixing seat to the rotating inner frame, which can reduce the load of the screw connector and improve the installation reliability of the mold.

[0076] It should be noted that: this device does not require a counterweight structure, which greatly reduces the spatial dimensions of the rotational molding machine. The mobile base facilitates the entire equipment to enter the heating chamber to complete the rotational molding production process. The double brackets achieve a double-point support effect on the rotating outer frame, which can increase the load capacity of the frame and also improve the vibration resistance of the frame to meet the molding production requirements of super-large workpieces. The stable support can also avoid the vibration impact problem caused by the flow of materials in the mold during rotation, thereby ensuring the long-term usability and reliability of the molding equipment.

[0077] The present invention also discloses a method for forming a weld-free liquid flow battery electrolyte container, using the above-mentioned forming device, which comprises the following steps:

[0078] Step 1: Prepare the processing mold and the molding equipment, and fix the processing mold on the rotating inner frame of the molding equipment. The molding equipment can cause the processing mold to rotate continuously along two mutually perpendicular axes;

[0079] Step 2: Prepare the cross-linked polyethylene material required for molding the molded product;

[0080] Step 3: Apply a release agent on the inner surface of the processing mold, then place the material in step 2 into the processing mold, and fill it with inert gas for atmosphere protection;

[0081] Step 4: On the basis of step 3, push the molding device into the heating chamber, turn on the molding device and the heating chamber, and make the processing mold rotate and heat;

[0082] Step 5: After heating is completed, the heating chamber and the molding equipment are closed, and the molding equipment is removed from the heating chamber. After the processing mold is cooled, the processing mold is removed from the rotating inner frame and placed on the demoulding tooling position;

[0083] Step 6: Open the end cover of the processing mold to obtain a preliminary finished product of the cross-linked polyethylene container;

[0084] Step 7: Open the flange of the preliminary finished container and clean the inside of the container with high-pressure water;

[0085] Step 8: Install the workpiece inside the container and install the ladder guardrail outside the container;

[0086] Step 9: Based on step 8, conduct positive and negative pressure airtightness tests on the container, and put it into storage after passing the test.

[0087] The cross-linked polyethylene material used in the present invention is prepared from the following materials:

[0088] (1) Base material: It is composed of linear polyethylene LLDPE-7042 produced by Qilu Petrochemical and high-density polyethylene HDPE-6070 produced by Dushanzi Petrochemical, with a ratio of 50:50. The physical properties after blending and extrusion are as follows:

[0089]

[0090] (2) Auxiliary materials: crosslinking agent diisopropylbenzene peroxide (DCP), accelerator triallyl cyanurate (TAC), inhibitor polyolefin graft crosslinking, antioxidant AT-7024, 4'-methylenebis(2,6-di-tert-butylphenol).

[0091] (3) Formula: 100 parts polyethylene, 0.03-5 parts cross-linking agent, 0.03-5 parts cross-linking accelerator, 0.01-1.5 parts free radical inhibitor, 0.05-5 parts antioxidant. This formula significantly improves the cross-linking efficiency at 200 degrees Celsius and is particularly suitable for large-volume workpieces formed by rotational molding.

[0092] Cross-linked polyethylene (XLPE) is a polyethylene material with a molecular weight of up to 600,000 that has been cross-linked and modified. This modification significantly improves the performance of polyethylene and has the following characteristics:

[0093] Temperature resistance: It can maintain stability in high and low temperature environments, can work for a long time in an environment of 90℃ to -40℃, and has a thermal life of more than 40 years. This solves the problem that the design life of PPH container materials is only 8-12 years. The service life of the electrode liquid container of the flow battery is required to be 20-40 years.

[0094] Mechanical properties: Due to the formation of a network cross-linked structure, the hardness, stiffness, toughness, bending modulus, wear resistance and impact resistance of cross-linked polyethylene are excellent, overcoming the defect that polypropylene PPH materials are easily cracked or even cracked due to environmental stress.

[0095] Insulation performance: The original good insulation properties of polyethylene are maintained, and the insulation resistance is further increased.

[0096] Chemical resistance: It has excellent acid and alkali corrosion resistance and permeation resistance, and is environmentally friendly.

[0097] Weather resistance: It has excellent aging resistance and UV resistance, which solves the defect of PPH container with poor weather resistance and easy aging.

[0098] Flame retardant properties: Flame retardant ingredients are added to the formula of cross-linked polyethylene, which can reach HB level. It has good flame retardant properties, can meet the requirements of modern fire safety, and solves the flammable defect of polypropylene PPH.

[0099] The cross-linked polyethylene used in this process is cross-linked by peroxide. Under the action of peroxide, polyethylene decomposes at high temperature to produce free radicals. These free radicals trigger the dehydrogenation reaction of polyethylene, forming carbon-carbon cross-links and finally forming a network structure.

[0100] In addition to the excellent properties of XLPE material itself, this product container also has the following characteristics:

[0101] 1. XLPE seamless containers are lighter than polypropylene (PPH) containers of the same size, have lower costs, shorter production cycles, and higher production efficiency.

[0102] 2. The production process of XLPE seamless containers is highly automated, the product quality is not affected by human factors, and the product stability and uniformity are high, which solves the defect of poor uniformity of PPH container batch products.

[0103] 3. The mechanical properties of XLPE seamless containers can be optimized through mold structure design, and they can withstand stronger positive and negative pressures, fully meeting the various requirements of liquid flow battery electrolyte containers.

[0104] 4. The XLPE seamless container has uniform wall thickness, no welding seams, no residual stress in the product, and is not easy to deform, which solves the risk of leakage and cracking of PPH containers due to manual welding.

[0105] 5. XLPE seamless containers are not only high in strength, but also have excellent impact and puncture resistance, which solves the defect that PPH containers are easily damaged during transportation and installation.

[0106] The present invention is used for the production and processing of a large-capacity cross-linked polyethylene weldless container specially used for liquid flow battery electrolyte, which can solve the problems existing in the existing PPH winding welding container, while ensuring the performance, life, maintenance, safety and convenience of the electrolyte container, and improve the production efficiency, so that it can fully meet the needs of the liquid flow battery for the electrolyte container.

[0107] As for the device and the method of use disclosed in the embodiment, since they correspond to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0108] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seamless flow battery electrolyte container processing mold, characterized in that: include: A barrel body mold part (101), wherein the barrel body mold part (101) is made of steel and is provided with a plurality of installation notches; The flange mold part (102) is made of aluminum. The flange mold part (102) is fixedly connected to a mounting notch reserved in the barrel mold part (101). The thermal conductivity of the flange mold part made of aluminum is higher than that of the barrel mold part made of steel, so that the flange of the product is formed first and the barrel of the product is formed later.

2. A seamless flow battery electrolyte container processing mold according to claim 1, characterized in that: An annular reinforcing rib (103) is integrally formed on the outer side of the barrel body mold portion (101).

3. A seamless flow battery electrolyte container processing mold according to any one of claims 1-2, characterized in that: The material of the molded product is cross-linked polyethylene, and the volume of the molded product is 40m 2 ~50m 2 .

4. A molding device for a seamless flow battery electrolyte container processing mold, using a seamless flow battery electrolyte container processing mold as claimed in claim 3, characterized in that: include: A heating chamber (2), wherein a chamber door is provided on one side of the heating chamber (2), and the heating chamber (2) provides a heating environment for processing the mold (1); A movable base (3), wherein the movable base (3) can enter the heating chamber (2), and vertical frames are fixed on both sides of the movable base (3), and an outer frame rotating motor (4) and an inner frame rotating motor (5) are fixed on the vertical frame on one side; A rotating outer frame (6), the rotating outer frame (6) is located between the two vertical frames, the middle parts of the two side ends of the rotating outer frame (6) are respectively connected with a rotating shaft (7) and a hollow shaft (8), the rotating shaft (7) and the hollow shaft (8) are respectively rotatably mounted on the vertical frames through bearings, the hollow shaft (8) is close to the vertical frame on one side where the motor is arranged, the hollow shaft (8) is transmission-connected with the output end of the rotating motor (4) of the outer frame and causes the rotating outer frame (6) to rotate; the inner side of the hollow shaft (8) is rotationally provided with a power connection shaft (9), the power connection shaft (9) is transmission-connected with the output end of the rotating motor (5) of the inner frame; A rotating inner frame (10), the rotating inner frame (10) is located on the inner side of the rotating outer frame (6), two ends of the rotating inner frame (10) are rotatably connected to two ends of the rotating outer frame (6) via support shafts, the rotating direction of the rotating inner frame (10) is perpendicular to the rotating direction of the rotating outer frame (6), and a plurality of fixing seats (16) for fixing the barrel body mold portion are provided on the rotating inner frame (10); A worm gear transmission mechanism (11), wherein the worm gear transmission mechanism (11) is mounted on the rotating outer frame (6), wherein a worm wheel (1101) in the worm gear transmission mechanism rotates synchronously with the support shaft, and wherein a worm (1102) in the worm gear transmission mechanism is drivingly connected to the power connection shaft (9).

5. The molding equipment for processing a weld-free liquid flow battery electrolyte container mold according to claim 4, characterized in that: A ground rail (12) is provided inside the heating chamber (2) and in the direction of the chamber door, and the ground rail (12) extends out of the outer side of the chamber door. Rollers are rotatably connected to the bottom of the movable base (3), and the movable base (3) is slidably connected to the ground rail (12) via the rollers to realize the process of entering and exiting the chamber.

6. The molding equipment for processing a weld-free liquid flow battery electrolyte container mold according to claim 5, characterized in that: The mobile base (3) is provided with a driving motor for controlling the movement of the roller, and the driving motor is connected to an external PLC controller via an electrical signal.

7. The molding equipment for processing a weld-free liquid flow battery electrolyte container mold according to claim 4, characterized in that: A hot air pipe (13) is provided on the top of the heating bin (2), and the hot air pipe (13) is connected to an external natural gas hot air furnace. The heating temperature and heating time of the heating bin (2) are controlled by an external PLC controller.

8. The molding equipment for processing a weld-free liquid flow battery electrolyte container mold according to claim 4, characterized in that: One end of the power connection shaft (9) is coaxially fixedly connected to the output shaft of the inner frame rotating motor (5), and a sprocket is connected to the outer wall of the other end of the power connection shaft (9), and a transmission chain (14) is connected to the sprocket, and the transmission chain (14) is transmission-connected to the worm (1102).

9. The molding equipment for processing a weld-free liquid flow battery electrolyte container mold according to claim 4, characterized in that: A plurality of mold branch pipes (15) are arranged on the outer side of the barrel body mold part (101); the fixing seat (16) has a plurality of groups and is arranged on the inner peripheral side of the rotating inner frame (10); a U-shaped support plate (17) is arranged on the fixing seat (16); a clamping plate (18) is fixed on the U-shaped support plate (17); an arc groove for clamping the mold branch pipe is arranged on the clamping plate (18); bolt holes are arranged on the bottom wall of the U-shaped support plate (17) and on both sides of the clamping plate (18); U-shaped screws (19) are connected in the bolt holes; and the mold branch pipes (15) are fixed on the clamping plate (18) by means of a plurality of U-shaped screws.

10. A method for forming a weld-free liquid flow battery electrolyte container, using the forming device according to any one of claims 4 to 9, characterized in that: The following steps are involved: Step 1: Prepare the processing mold and the molding equipment, and fix the processing mold on the rotating inner frame of the molding equipment. The molding equipment can cause the processing mold to rotate continuously along two mutually perpendicular axes; Step 2: Prepare the cross-linked polyethylene material required for molding the molded product; Step 3: Apply a release agent on the inner surface of the processing mold, then place the material in step 2 into the processing mold, and fill it with inert gas for atmosphere protection; Step 4: On the basis of step 3, push the molding device into the heating chamber, turn on the molding device and the heating chamber, and make the processing mold rotate and heat; Step 5: After heating is completed, the heating chamber and the molding equipment are closed, and the molding equipment is removed from the heating chamber. After the processing mold is cooled, the processing mold is removed from the rotating inner frame and placed on the demoulding tooling position; Step 6: Open the processing mold to obtain a preliminary finished product of the cross-linked polyethylene container; Step 7: Open the flange of the preliminary finished container; Step 8: Install the workpiece inside the container and install the ladder guardrail outside the container; Step 9: Based on step 8, the inside of the container is cleaned with high-pressure water to remove the plastic powder formed by the flange opening and the installation of the workpiece in the pipe, and then a positive and negative pressure airtightness test is carried out. After passing the test, it is put into storage.

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