A multi-functional VPI device

Abstract

The present invention relates to a multifunctional VPI device, comprising at least two clamping plate units arranged horizontally and side by side; the clamping plate unit comprises an upper clamping plate and a lower clamping plate which are symmetrically arranged and have the same size; the clamping plate unit also comprises two long strips of positioning insulating auxiliary parts which are arranged between the upper clamping plate and the lower clamping plate and are parallel to each other; the length direction of the positioning insulating auxiliary parts is consistent with the arrangement direction of the clamping plate unit; the coil to be impregnated is placed between the two positioning insulating auxiliary parts; adjacent clamping plate units are fixedly connected by two sets of symmetrically arranged load-bearing connecting rods. The device has a simple structure, is quick and convenient to disassemble and install, and can effectively save manufacturing costs and test costs.

Description

Technical Field

[0001] The present invention relates to the technical field of VPI, and particularly to a multifunctional VPI device. Background Art

[0002] VPI is the abbreviation of vacuum pressure impregnation process. The main purpose of a VPI device is to produce coils with certain specifications, or to simulate a stator core for performing integral impregnation stator related tests. In the application of traditional VPI devices, many disadvantages can be found. First of all, traditional VPI devices can only produce coils of one specification. When the coil size specifications change, a large number of different devices need to be matched, resulting in extremely high manufacturing costs and long cycles for the devices. Secondly, the disassembly and installation are extremely complex and the weight is large. Thirdly, the sizes of the ventilation holes in traditional VPI devices are fixed. When performing integral impregnation stator related tests, the heat dissipation effect of the ventilation holes in traditional VPI devices remains unchanged. When the actual stator core specifications change, traditional VPI devices cannot meet the relevant test requirements of different specifications of stator cores, and new VPI devices must be redesigned and produced. Summary of the Invention

[0003] In view of the technical problems existing in the prior art, the present invention provides a multifunctional VPI device, which has a simple structure and is quick and convenient for disassembly and installation; it can effectively save manufacturing costs and test costs.

[0004] The technical solution for the present invention to solve the above technical problems is as follows: A multifunctional VPI device includes at least two clamping plate units arranged side by side horizontally; each clamping plate unit includes an upper clamping plate and a lower clamping plate which are symmetrically arranged up and down and have the same size; each clamping plate unit further includes two long strip-shaped positioning insulation auxiliary members which are arranged between the upper clamping plate and the lower clamping plate and are parallel to each other; the length direction of the positioning insulation auxiliary members is the same as the arrangement direction of the clamping plate units; between the two positioning insulation auxiliary members is for placing the coil to be impregnated; adjacent clamping plate units are fixedly connected by two groups of symmetrically arranged load-bearing connecting rods.

[0005] The beneficial effect of the present invention is that the positioning insulation auxiliary members can be set to different sizes according to needs (i.e., the height and width of the coil), and a combined clamping plate unit is adopted, and the number of clamping plate units can be adaptively increased or decreased according to the coil size. The width of the coil is controlled by the distance between the upper clamping plate and the clamping plate, and the height of the coil is controlled by the positioning insulation auxiliary members on the left and right sides. Therefore, it can adapt to the production of coils of different specifications or simulate different specifications of iron cores for performing integral impregnation stator related tests.

[0006] Further, the upper clamping plate and the lower clamping plate of the clamping plate unit are fixedly connected by two symmetrically arranged positioning bolts, and the two positioning bolts are respectively located outside the two positioning insulation auxiliary members for limiting the two positioning insulation auxiliary members.

[0007] The distance between the upper clamping plate and the lower clamping plate can be adjusted by positioning bolts, and at the same time, the positioning insulation auxiliary parts are limited.

[0008] Furthermore, each group of the load-bearing connecting rods includes a load-bearing protection connecting rod located above the upper clamping plate and a load-bearing protection connecting rod located below the lower clamping plate; the load-bearing protection connecting rod located above the upper clamping plate and the load-bearing protection connecting rod located below the lower clamping plate are symmetrically arranged up and down; through holes are provided at both ends of the two load-bearing protection connecting rods; the two load-bearing protection connecting rods are fixedly connected by load-bearing bolts arranged in the through holes at both ends; the load-bearing bolts in the through holes at both ends of the two load-bearing protection connecting rods pass through the upper clamping plate and the lower clamping plate.

[0009] After the upper clamping plate, the lower clamping plate, the positioning insulation auxiliary parts and the coil to be produced are assembled, the weight of the whole device is very large. At the same time, since the whole device is connected by clamping plate units, if no reinforcement connection is carried out, it is very easy to seriously affect the finished product quality of the coil or the results of the relevant tests of the integral impregnated stator. Fixing and connecting two adjacent clamping parts in the above way can improve the connection stability between two adjacent clamping parts, make the upper clamping plate and the clamping plate of the whole device into a whole, prevent the device structure and the coil from deforming due to gravity during hoisting, and further affect the finished product quality of the coil or the results of the relevant tests of the integral impregnated stator.

[0010] Furthermore, the through holes provided at both ends of the two load-bearing protection connecting rods are waist-shaped holes, and the length direction of the waist-shaped holes is the same as the length direction of the load-bearing protection connecting rods.

[0011] After the upper clamping plate and the lower clamping plate are installed and the coil is produced, without disassembling the device, the whole VPI device is used to simulate the stator core for the relevant tests of the integral impregnated stator. At this time, the gap between the clamping plate units is equivalent to the ventilation holes of the stator core. The sizes of the ventilation holes of stator cores of different specifications are different. However, the ventilation holes of the traditional VPI device are fixed. When the specifications of the simulated core change, the traditional VPI device cannot meet the relevant test requirements of stator cores of different specifications, and a new VPI device must be redesigned and produced.

[0012] Waist-shaped holes are provided to adjust the distance between adjacent clamping plate units according to the specifications of the coil or the specifications of the stator core to be simulated. Since the gap between the clamping plate units is equivalent to the ventilation holes of the stator core, adjusting the distance between adjacent clamping plate units is to adjust the size of the ventilation holes.

[0013] Furthermore, washers are sleeved on the positioning bolts and the load-bearing bolts.

[0014] A washer is provided to further fix and connect two adjacent clamping plate units, thereby improving the connection stability of the two adjacent clamping plate units and preventing deformation of the device structure and the coil due to gravity during hoisting.

[0015] Furthermore, the device also includes a mounting pad disposed below the clamping plate unit. When the device is assembled, the mounting pad is used to raise the clamping plate unit.

[0016] The width of the mounting pad is smaller than the spacing between two symmetrically arranged positioning bolts, and when the device is assembled, the mounting pad is located between the two positioning bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a multifunctional VPI device provided by an embodiment of the present invention;

[0018] Figure 2 This is a left side view of the multifunctional VPI device provided by an embodiment of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Install the pad, 2. Upper splint, 3. Lower splint, 4. Positioning insulation accessories, 5. Positioning bolts, 6. Load-bearing protection connecting rod, 7. Load-bearing bolts. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] An embodiment of the present invention provides a multifunctional VPI device, comprising at least two clamping plate units arranged horizontally side by side. The clamping plate unit comprises an upper clamping plate 2 and a lower clamping plate 3 which are symmetrically arranged up and down and have the same size; the clamping plate unit also comprises two long strips of positioning insulating auxiliary parts 4 which are arranged between the upper clamping plate 2 and the lower clamping plate 3 and are parallel to each other; the length direction of the positioning insulating auxiliary parts 4 is consistent with the arrangement direction of the clamping plate unit; the coil to be impregnated is placed between the two positioning insulating auxiliary parts 4; adjacent clamping plate units are fixedly connected by two sets of symmetrically arranged load-bearing connecting rods. And these two sets of load-bearing connecting rods are symmetrical about the arrangement direction of the clamping plate unit.

[0023] It should be understood here that the entire VPI device may only include two strip-shaped positioning insulating auxiliary components, that is, all clamping plate units share these two positioning insulating auxiliary components; it may also include multiple positioning insulating auxiliary components with different lengths, with every two as a group, and adjacent multiple clamping plate units share one group of positioning insulating auxiliary components; it may also set 2n positioning insulating auxiliary components according to the number n of clamping plate units, with every two as a group, and each clamping plate unit includes one group of positioning insulating auxiliary components. In this embodiment, the adjacent clamping plate units share one group of positioning insulating auxiliary components for setting.

[0024] The positioning insulating auxiliary components can be set with different sizes according to needs (i.e., the height and width of the coil). Moreover, by adopting the combined clamping plate units, the number of clamping plate units can be adaptively increased or decreased according to the coil length. The width of the coil is controlled by the spacing between the upper clamping plate and the clamping plate, and the height of the coil is controlled by the positioning insulating auxiliary components on the left and right sides. Therefore, it can adapt to the production of coils with different specifications or simulate the integral dipping stator related tests for different specifications of iron cores.

[0025] As a preferred embodiment, the upper clamping plate and the lower clamping plate of the clamping plate unit are fixedly connected by two symmetrically arranged positioning bolts 5, and the two positioning bolts 5 are respectively located outside the two positioning insulating auxiliary components 4 for limiting the two positioning insulating auxiliary components 4.

[0026] The spacing between the upper clamping plate 2 and the lower clamping plate 3 can be adjusted through the positioning bolts 5, and at the same time, the positioning insulating auxiliary components 4 are limited.

[0027] As a preferred embodiment, each group of the load-bearing connecting rods includes a load-bearing protection connecting rod 6 located above the upper clamping plate and a load-bearing protection connecting rod 6 located below the lower clamping plate; the two load-bearing protection connecting rods 6 are symmetrically arranged up and down, and through holes are provided at both ends of the two load-bearing protection connecting rods 6; the two load-bearing protection connecting rods 6 are fixedly connected by load-bearing bolts 7 arranged in the through holes at both ends; the load-bearing bolts 7 in the through holes at both ends of the two load-bearing protection connecting rods 6 pass through the upper clamping plate 2 and the lower clamping plate 3.

[0028] After the upper clamping plate, the lower clamping plate, the positioning insulating auxiliary components and the coil to be produced are assembled, the weight of the entire device is very large. At the same time, since the entire device is connected by clamping plate units, if no reinforcement connection is carried out, it is very easy to seriously affect the finished product quality of the coil or the results of the integral dipping stator related tests. Fixing and connecting the adjacent two clamping members in the above manner can improve the connection stability of the adjacent two clamping members, connect the upper clamping plate and the clamping plate of the entire device into a whole, prevent the device structure and the coil from deforming due to gravity during hoisting, and thus affect the finished product quality of the coil or the results of the integral dipping stator related tests.

[0029] As a preferred embodiment, washers are sleeved on both the positioning bolts 5 and the load-bearing bolts 7.

[0030] The washers are provided to further fixedly connect two adjacent splint units, improve the connection stability between two adjacent splint units, and prevent deformation of the device structure and the coil caused by gravity during hoisting.

[0031] As a preferred embodiment, the through holes provided at both ends of the two load-bearing protection connecting rods 6 are waist-shaped holes, and the length direction of the waist-shaped holes is consistent with the length direction of the load-bearing protection connecting rods 6.

[0032] After the upper splint and the lower splint are installed and the coil is produced, without disassembling the device, the entire VPI device is simulated as a stator core to conduct relevant tests on the integral impregnation of the stator. At this time, the gap between the splint units is equivalent to the ventilation holes of the stator core. However, the ventilation hole sizes of stator cores of different specifications are different, while the ventilation holes of traditional VPI devices are fixed. When the simulated core specifications change, traditional VPI devices cannot meet the relevant test requirements of stator cores of different specifications.

[0033] The waist-shaped holes are provided to adjust the distance between adjacent splint units according to the coil specifications or the specifications of the stator core to be simulated. Since the gap between the splint units is equivalent to the ventilation holes of the stator core, adjusting the distance between adjacent splint units is to adjust the size of the ventilation holes.

[0034] As a preferred embodiment, the device further includes an installation backing plate 1 provided below the splint unit. When the device is assembled, the installation backing plate 1 is used to raise the splint unit.

[0035] The width of the installation backing plate 1 is smaller than the distance between two symmetrically arranged positioning bolts 5, and when the upper splint, the lower splint, and the positioning insulation accessories are assembled, the installation backing plate is located between the two positioning bolts.

[0036] During use, first, a certain number of lower splints 3 are placed above the installation backing plate 1 at a certain horizontal gap and arranged neatly. Then, the coil and a certain number of insulation accessories 4 are placed on the surface of the lower splint, and then the upper splint 2 is placed. The positioning bolts 5 are tightened on the upper splint and the lower splint. Finally, the load-bearing bolts 7 are tightened on the load-bearing protection connecting rods 6 on the surfaces of the upper and lower splints. The upper splint 2, the lower splint 3, the insulation accessories 4, the positioning bolts 5, the load-bearing protection connecting rods 6, the load-bearing bolts and washers 7, and the coil are integrated and placed in a VPI paint tank to impregnate resin (the installation backing plate 1 is not put into the paint tank). The device of the present invention has a simple structure, is convenient for installation and disassembly, has a low manufacturing cost, can produce coils of various size specifications, and can meet the relevant test requirements for the integral impregnation of different specification cores, has functions of production and testing, and has very strong practicability and flexibility.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-functional VPI device, characterized in that, It includes at least two splint units arranged horizontally side by side; each splint unit includes an upper splint and a lower splint which are symmetrically arranged up and down and have the same size; each splint unit further includes two long strip-shaped positioning insulating auxiliary parts which are arranged between the upper splint and the lower splint and are parallel to each other; the length direction of the positioning insulating auxiliary parts is consistent with the arrangement direction of the splint units; the space between the two positioning insulating auxiliary parts is used for placing the coil to be impregnated; adjacent splint units are fixedly connected by two groups of symmetrically arranged load-bearing connecting rods; The upper splint and the lower splint of the splint unit are fixedly connected by two symmetrically arranged positioning bolts, and the two positioning bolts are respectively located outside the two positioning insulating auxiliary parts and are used for limiting the two positioning insulating auxiliary parts; Each group of load-bearing connecting rods includes a load-bearing protection connecting rod located above the upper splint and a load-bearing protection connecting rod located below the lower splint; the load-bearing protection connecting rod located above the upper splint and the load-bearing protection connecting rod located below the lower splint are symmetrically arranged up and down; through holes are provided at both ends of the two load-bearing protection connecting rods; the two load-bearing protection connecting rods are fixedly connected by load-bearing bolts arranged in the through holes at both ends; the load-bearing bolts in the through holes at both ends of the two load-bearing protection connecting rods pass through the upper splint and the lower splint; The through holes provided at both ends of the two load-bearing protection connecting rods are waist-shaped holes, and the length direction of the waist-shaped holes is consistent with the length direction of the load-bearing protection connecting rods; Washers are sleeved on the positioning bolts and the load-bearing bolts.

2. The multifunctional VPI device according to claim 1, characterized in that, It further includes a mounting base plate arranged below the splint unit, and when the device is assembled, the mounting base plate is used for raising the splint unit.

3. The multifunctional VPI device according to claim 2, wherein The width of the mounting base plate is smaller than the distance between the two symmetrically arranged positioning bolts, and when the device is assembled, the mounting base plate is located between the two positioning bolts.

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