Charging box device for ultra-clean material of ultra-high-voltage cable

Abstract

The invention discloses an ultra-clean material feeding box device for an ultra-high-voltage cable, belongs to the field of cable processing equipment, and solves the problem of how to ensure the feeding purity of an insulating material during insulation forming of an ultra-high-voltage cable and an extra-high-voltage cable in the prior art. According to the device, the operation box is a closed box body, and a feeding mechanism and a discharging mechanism are arranged in the operation box; a material bag is arranged above the operation box; the feeding mechanism is a cylindrical discharging unit, and the discharging mechanism is a conical feeding unit. The conical feeding unit is provided with a conical feeding part; the cylindrical discharging unit comprises a cylindrical discharging pipe, and the upper end of the cylindrical discharging pipe is a feeding end and is bound and fixed with an opening of a material bag; and the lower end of the cylindrical blanking pipe is communicated with the feeding part of the conical feeding unit. According to the ultra-clean material feeding box device for the ultrahigh-voltage cable, dust and other impurities are prevented from entering an insulating material during feeding, the purity of the insulating material during extrusion is guaranteed, and then the insulation characteristic of the cable is guaranteed.

Description

Technical Field

[0001] The invention relates to an ultra-clean material feeding box device for an ultra-high voltage cable, belonging to the field of cable equipment. Background Art

[0002] The commonly used high-voltage cable voltage level is 35-110 kV, 110 kV-750 kV belongs to ultra-high voltage cable, and 1000 kV and above belong to ultra-high voltage cable. Ultra-high voltage cable and ultra-high voltage cable are necessary transmission equipment for ultra-long-distance power transmission. They have many advantages such as long transmission distance, large capacity, high efficiency, low loss, low unit cost, and small land area. They can effectively solve the ultra-long-distance and ultra-large-scale transmission of energy. In summary, it is ultra-high power and ultra-long distance power transmission, and the loss can be reduced to an extremely low level. It can effectively solve many problems, and the laying cost will be higher, but ultra-high voltage is among the seven major areas of the country's new infrastructure in 2020. It can be seen that the construction of ultra-high voltage is still imperative. Because China's resource endowment and load are currently inversely distributed, ultra-high voltage is not only a new transmission technology, but also a new resource allocation platform and a new low-carbon development path.

[0003] Even tiny impurities in the insulation of ultra-high voltage cables may lead to a significant decline in product performance, so ensuring the purity of cable insulation materials plays a vital role in product quality. When the insulation of ultra-high voltage cables and UHV cables is formed, the insulation material needs to be transported to the extruder for extrusion. During the feeding process, if impurities such as dust are mixed into the insulation material, it will greatly affect the insulation characteristics of the cable, making the cable prone to breakdown during ultra-high voltage and UHV power transmission. Therefore, when the insulation of ultra-high voltage cables and UHV cables is formed, ensuring the purity of the cable insulation material plays a vital role in product quality. Summary of the invention

[0004] The present invention provides an ultra-clean material feeding box device for an ultra-high voltage cable, which prevents dust and other impurities from entering the insulating material during feeding, ensures the purity of the insulating material during extrusion, and further ensures the insulation properties of the cable.

[0005] The technical solution adopted by the present invention is a feeding box device for ultra-clean materials of ultra-high voltage cables, comprising an operating box, the operating box is a closed box body, and the operating box has a feeding mechanism and a discharging mechanism inside;

[0006] A material bag is provided above the operation box;

[0007] The feeding mechanism is a columnar feeding unit, and the discharging mechanism is a conical feeding unit;

[0008] The conical feeding unit has a conical feeding part;

[0009] The columnar feeding unit comprises a columnar feeding pipe, the upper end of which is a feeding end and is tied and fixed to the opening of the material bag; the lower end of the columnar feeding pipe is connected to the feeding part of the conical feeding unit.

[0010] Optimized, the above-mentioned ultra-clean material feeding box device for ultra-high voltage cables has an air shower drying and purification system in the operating box;

[0011] The air shower drying purification system includes a filter and a fan;

[0012] The top wall or the side wall of the operation box is provided with an opening, and a filter is sealed and installed in the opening; the fan is installed in the operation box and is arranged in cooperation with the filter.

[0013] Optimally, the above-mentioned ultra-clean material feeding box device for ultra-high voltage cables also includes an automatic plug-in system;

[0014] The automatic plug-in system includes a feeding weight meter, which is arranged in a cylindrical feeding unit or a conical feeding unit. The feeding weight meter in the present application can be a solid particle flow meter, which is a flow meter that replaces the weighing principle and performs flow measurement online, and is suitable for instantaneous and cumulative flow measurement of solid particle powder.

[0015] Optimized, the above-mentioned ultra-clean material feeding box device for ultra-high voltage cables has a box door opening on the front face of the operating box, a box door is pivotally connected in the box door opening, and the edge of the box door is sealed with the box door opening;

[0016] The middle part of the box door is provided with a transparent part.

[0017] Optimized, the above-mentioned ultra-clean material feeding box device for ultra-high voltage cables has two through holes on the transparent part of the box door, and operating gloves are connected in the through holes;

[0018] The edge of the glove opening of the operating glove is sealed and connected with the edge of the through hole of the transparent part.

[0019] Optimized, the above-mentioned ultra-clean material feeding box device for ultra-high voltage cables has a feeding opening at the top of the operating box, and the feeding opening is arranged in cooperation with the columnar unloading unit;

[0020] The feed opening is provided with an upper end closing cover;

[0021] When the upper end closing cover covers the feed opening, it is sealed with the feed opening.

[0022] Optimized, in the above-mentioned ultra-clean material feeding box device for ultra-high voltage cables, the lower end of the conical feeding unit passes through the lower end of the operating box and then extends to the outside of the operating box;

[0023] The middle section of the conical feeding unit has a partition box; a partition is slidably arranged in the partition box, the partition has a drawer portion, and the drawer portion passes through the side wall of the partition box, and the drawer portion and the partition box are slidably sealed.

[0024] Optimized, the above-mentioned ultra-clean material feeding box device for ultra-high voltage cables also includes a support frame and a raw material box, and the operation box is fixed in the support frame;

[0025] The top of the support frame is provided with a raw material box placement portion; the material bag is located in the raw material box; the bag mouth of the material bag passes through the feed opening and enters the operation box;

[0026] The bag opening of the material bag is tied and fixed to the upper end opening of the columnar material discharging unit.

[0027] The advantages of this application are: the technical solution of this application is an ultra-clean insulation material feeding device suitable for ultra-high voltage cables and UHV cables of 500kV and above. The ultra-clean insulation feeding device effectively prevents external contamination by providing a dust-free and sterile feeding environment, ensuring that no impurities are introduced into the material when it is added, thereby ensuring the high purity and high performance of the final product.

[0028] The ultra-clean insulation feeding device ensures product quality, improves production efficiency, reduces the need for manual operation, reduces human errors, and improves production speed and efficiency. By adopting this equipment, product quality can be improved, costs can be reduced, and sustainable development can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of this application;

[0030] Figure 2 This is a schematic diagram of the internal structure of the operating box of this application.

[0031] Figure 3 This is a schematic diagram of the structure after the feed opening of the operating box in this application is closed;

[0032] Figure 4 It is a schematic diagram of the structure of the columnar feeding unit and the conical feeding unit in this application. DETAILED DESCRIPTION

[0033] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] As shown in the figure, the present invention discloses a feeding box device for ultra-clean materials of ultra-high voltage cables. The main structure of the device is placed in a dust-free operating space to prevent the feeding box device from being contaminated with dust during the feeding process.

[0035] The feeding box device of the present application comprises an operating box 1 and a supporting frame 5, wherein the operating box 1 is fixed in the supporting frame 5. The supporting frame 5 is welded into a rectangular frame by metal pipes and metal plates, etc., and the operating box 1 can be installed in the supporting frame 5 by bolt connection or the like.

[0036] The top of the support frame 5 has a raw material box placement portion, and the material bag 601 is located in the raw material box 6. The bag opening of the material bag 601 passes through the feed opening 103 and enters the operation box 1. The bag opening of the material bag 601 is tied and fixed to the upper end opening of the columnar unloading unit 2.

[0037] The operation box 1 of the present application is a completely enclosed box. The front end of the operation box 1 has a box door opening, and a box door 101 is pivotally connected in the box door opening. The edge of the box door 101 is sealed with the box door opening. A transparent portion 102 is provided in the middle of the box door 101. An opening penetrating the box door 101 is constructed in the middle of the box door 101, and a transparent acrylic plate or a transparent nylon plate or other transparent material plate is installed in the opening of the box door 101 to form the transparent portion 102.

[0038] The transparent part 102 of the box door 101 is provided with two through holes, and the operating gloves are connected in the through holes. The edge of the glove opening of the operating glove is sealed and connected with the edge of the through hole of the transparent part 102 by gluing, flange pressing or the like.

[0039] The top of the operating box 1 has a feed opening 103, and the feed opening 103 is arranged in cooperation with the columnar unloading unit 2, that is, the feed opening 103 is located above the opening of the columnar unloading pipe of the columnar unloading unit 2. The feed opening 103 needs to be in an open state during the unloading operation, and after the unloading is completed, the feed opening 103 needs to be opened. Therefore, in the present application, an upper end closing cover 104 is provided on the feed opening 103, and when the upper end closing cover 104 covers the feed opening 103, it is closed with the feed opening 103. In this embodiment, a sealing rubber ring can be fixed at the edge of the feed opening 103, and when the upper end closing cover 104 covers the feed opening 103, the sealing rubber ring of the feed opening 103 is pressed by gravity to seal and close. The closing method of the feed opening 103 can also be adopted in other ways, such as the upper end closing cover 104 is threadedly connected to the feed opening 103, and so on.

[0040] The lower end of the conical feeding unit 3 passes through the lower end surface of the operation box 1 and extends to the outside of the operation box 1. After the lower end of the conical feeding unit 3 passes through the lower end surface of the operation box 1, the gap between the lower end of the conical feeding unit 3 and the operation box 1 is sealed by welding or the like.

[0041] From the above, it can be seen that the operating box 1 of the present application covers the unloading system and the feeding system inside to ensure that they are not in contact with the outside. At the same time, the transparent gloves are used for operation, so that personnel can perform external material replacement operations to avoid direct contact with the materials and cause contamination. After the unloading operation is completed, the feeding opening 103 is closed, so that the inside of the operating box 1 is in a completely closed state to prevent dust from entering the inside.

[0042] The operation box 1 has an air shower drying purification system, which includes a filter 106 and a fan 107. The operation box 1 has an opening on the top wall or side wall, and the filter 106 is sealed in the opening. The fan 107 is installed in the operation box 1 and is arranged in cooperation with the filter 106.

[0043] When the air shower drying purification system is working, the AC motor drives the fan 107 to operate, and the external air is filtered through the top filter 106 and then introduced into the sealed purification room in the operation box 1, so that the cleanliness of the air entering the purification room meets the requirements, and the unclean air in the room is discharged through an uninterrupted filtering cycle, while ensuring the positive pressure state in the room to prevent outdoor air from entering.

[0044] A material bag 601 is provided above the operation box 1. The feeding mechanism is a columnar feeding unit 2, and the discharging mechanism is a conical feeding unit 3. The conical feeding unit 3 has a conical feeding part, and the columnar feeding unit 2 includes a columnar feeding pipe.

[0045] The upper end of the cylindrical feeding pipe is the feeding end and is tied and fixed to the opening of the material bag 601 , and the lower end of the cylindrical feeding pipe is connected to the feeding part of the conical feeding unit 3 .

[0046] The cylindrical feeding unit connects the bag opening of cross-linked polyethylene insulation material to the cylindrical feeding pipe, ensuring that the insulation material in the packaging bag is fed by gravity. The conical feeding unit uses the conical feeding port to transport the raw materials to the extruder after the raw materials enter the cylindrical feeding port.

[0047] The automatic plug-in system includes a feeding weight meter, which is arranged in the columnar feeding unit 2 or the conical feeding unit 3. The automatic plug-in system is connected to an external data transmission and alarm system, which can automatically detect the feeding quantity during production, and can avoid the failure of continuous cable production due to misoperation or material breakage, ensuring the stability of the production process, reducing fluctuations in the production process, and reducing the defective product rate.

[0048] The middle section of the conical feeding unit 3 has a partition box 301, and a partition 302 is slidably arranged in the partition box 301. The partition 302 has a pull-out portion and the pull-out portion passes through the side wall of the partition box 301. The pull-out portion and the partition box 301 are slidably sealed. The pull-out portion of the partition 302 can be connected to a starter or electric drive device to push the partition 302 to move. After the partition 302 moves, the conical feeding unit 3 can be closed or opened.

[0049] A drying device may also be provided in the partition box 301 to keep the placed cross-linked polyethylene insulating material dry.

[0050] The working process of the charging box device of this embodiment is as follows:

[0051] When the insulating material needs to be replaced, replace the raw material box 6 above this device, remove the outer sealing film inside the raw material box 6 and place it flatly on the raw material box placement part on the top of the support frame 5. After placement, pull out the plastic film inside the insulating raw material through the operation box 1, connect the bag mouth of the material bag 601 to the cylindrical discharge pipe and use a cable tie to tighten it to ensure sealing. Wear transparent gloves during this operation to prevent contamination.

[0052] The lower end of the conical feeding unit 3 of the operating box 1 is connected to the feed point of the equipment below through a flange. After the raw materials enter the cylindrical feeding port, the conical feeding port is used to transport the raw materials to the extruder. A drying device is arranged at the conical feeding port, and a pneumatic valve controls the partition 302 at the connection.

[0053] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A feeding box device for ultra-clean materials of ultra-high voltage cables, comprising an operating box (1), the operating box (1) being a closed box body, and having a feeding mechanism and a discharging mechanism inside the operating box (1); characterized in that: A material bag (601) is provided above the operation box (1); The feeding mechanism is a columnar feeding unit (2), and the discharging mechanism is a conical feeding unit (3); The conical feeding unit (3) has a conical feeding portion; The columnar feeding unit (2) comprises a columnar feeding pipe, the upper end of which is a feeding end and is tied and fixed to the opening of the material bag (601); the lower end of the columnar feeding pipe is connected to the feeding part of the conical feeding unit (3).

2. The ultra-clean material feeding box device for ultra-high voltage cables according to claim 1 is characterized in that: The operation box (1) is provided with an air shower drying and purification system; The air shower drying purification system comprises a filter (106) and a fan (107); The operation box (1) has an opening on the top wall or the side wall, and a filter (106) is sealed and installed in the opening; the fan (107) is installed in the operation box (1) and is arranged in cooperation with the filter (106).

3. The ultra-clean material feeding box device for ultra-high voltage cables according to claim 1 is characterized in that: Also includes an automatic docking system; The automatic plug-in system comprises a feeding weight meter, which is arranged in the columnar feeding unit (2) or the conical feeding unit (3).

4. The ultra-clean material feeding box device for ultra-high voltage cables according to claim 1 is characterized in that: The front end surface of the operation box (1) has a box door opening, a box door (101) is pivotally connected in the box door opening, and the edge of the box door (101) is sealed with the box door opening; The box door (101) has a transparent portion (102) in the middle.

5. The ultra-clean material feeding box device for ultra-high voltage cables according to claim 4 is characterized in that: The transparent portion (102) of the box door (101) is provided with two through holes, and operating gloves are connected in the through holes; The edge of the glove opening of the operating glove is sealed and connected to the edge of the through hole of the transparent part (102).

6. The ultra-clean material feeding box device for ultra-high voltage cables according to claim 1 is characterized in that: The top end of the operation box (1) is provided with a feed opening (103), and the feed opening (103) is arranged in cooperation with the columnar unloading unit (2); The feed opening (103) is provided with an upper end closing cover (104); When the upper end closing cover (104) covers the feed opening (103), it is sealed with the feed opening (103).

7. The ultra-clean material feeding box device for ultra-high voltage cables according to claim 1 is characterized in that: The lower end of the conical feeding unit (3) passes through the lower end of the operation box (1) and then extends to the outside of the operation box (1); The middle section of the conical feeding unit (3) comprises a partition box (301); a partition plate (302) is slidably arranged inside the partition box (301); the partition plate (302) comprises a drawer portion, and the drawer portion passes through the side wall of the partition box (301); and a sliding seal is formed between the drawer portion and the partition box (301).

8. The ultra-clean material feeding box device for ultra-high voltage cables according to claim 6 is characterized in that: It also includes a support frame (5) and a raw material box (6), and the operation box (1) is fixed in the support frame (5); The top of the support frame (5) is provided with a raw material box placement portion; the material bag (601) is located in the raw material box (6); the bag opening of the material bag (601) passes through the feed opening (103) and then enters the operation box (1); The bag opening of the material bag (601) is tied and fixed to the upper opening of the columnar material discharging unit (2).

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