A transformer coil oil gap spacer pressurizing measuring device

Abstract

The utility model relates to a kind of transformer coil oil gap cushion block pressurized measuring device, including pressurized measuring mechanism and down mechanism, wherein pressurized measuring mechanism includes pressurized device, pressurized sliding seat and measuring support, the oil gap cushion block to be measured is placed on measuring support, pressurized sliding seat is driven to move on the measuring support by pressurized device, and oil gap cushion block is pressed by the pressurized sliding seat;Distance measuring system for measuring the compression amount variation of oil gap cushion block is equipped on the pressurized sliding seat, pressure measuring element for measuring the pressure of oil gap cushion block under pressure is equipped on the measuring support;Down mechanism is equipped with liftable down platform, and oil gap cushion block is positioned by the down platform down when measuring.The utility model can simulate the pressure value of actual work to oil gap cushion block pressurization, to obtain the compression amount of oil gap cushion block further, and according to this compression amount, the number of oil gap cushion block to be configured can be determined in advance.

Description

Technical Field

[0001] This utility model relates to the field of transformer coil manufacturing, specifically a transformer coil oil gap gasket pressure measuring device. Background Technology

[0002] In transformer disc coils, oil gap spacers are installed between adjacent segments in the height direction. These spacers not only provide support but also create oil passages between the segments. However, during coil production, the oil gap spacers shrink and compress during drying and pressurization. This causes a significant cumulative tolerance in the overall coil height, substantially affecting its value. Therefore, after the coil is produced, considerable time is required to adjust the number of oil gap spacers to ensure the overall coil height. If the potential compression of the oil gap spacers could be determined before coil production, and the required number of spacers could be pre-configured, production efficiency would be greatly improved. Utility Model Content

[0003] The purpose of this invention is to provide a transformer coil oil gap pad pressure measuring device, which can simulate the actual working pressure value to pressurize the oil gap pad, thereby obtaining the compression amount of the oil gap pad, and based on this compression amount, the number of oil gap pads to be configured can be determined in advance.

[0004] The objective of this utility model is achieved through the following technical solution: A transformer coil oil gap pad pressure measuring device includes a pressure measuring mechanism and a pressing mechanism. The pressure measuring mechanism includes a pressure device, a pressure slide, and a measuring support. The oil gap pad to be measured is placed on the measuring support. The pressure slide is driven to move on the measuring support by the pressure device, and the oil gap pad is pressurized by the pressure slide. The pressure slide is equipped with a distance measuring system for measuring the change in the compression of the oil gap pad, and the measuring support is equipped with a pressure measuring element for measuring the pressure on the oil gap pad. The pressing mechanism is equipped with a liftable pressing platform, and the oil gap pad is pressed and positioned by the pressing platform during measurement.

[0005] The measuring support is provided with a pad placement platform, and the pressure slide is slidably disposed on the pad placement platform. A longitudinal limiting block is provided at the end of the pad placement platform away from the pressure slide, and a transverse limiting block is provided on one side of the pad placement platform. The ranging system is disposed on the end plate of the measuring support near the pressure device, and the pressure measuring element is disposed on the longitudinal limiting block.

[0006] The measuring support is provided with a pressure screw on the lower side. The pressure device is located on the outside of the measuring support and connected to the pressure screw. The pressure slide is provided with a slide drive plate on the lower side, and the slide drive plate is provided with a pressure nut that is fitted onto the pressure screw.

[0007] The pressure slide has slide side plates on both sides that are connected to the slide drive plate, and the slide side plates are slidably connected to the measuring support.

[0008] The upper side of the pressure slide has a plurality of comb tooth protrusions evenly arranged, and comb tooth grooves are formed between adjacent comb tooth protrusions. The lower surface of the pressure platform has a plurality of comb tooth pressure blocks evenly arranged, each of which is embedded and cooperates with the corresponding comb tooth groove.

[0009] The pressing mechanism includes a pressing bracket, a pressing mounting plate, and a pressing drive device. The pressing mounting plate is located at the upper end of the pressing bracket, the pressing drive device is located on the upper side of the pressing mounting plate, and the pressing platform is located inside the pressing bracket and is driven to rise and fall by the pressing drive device.

[0010] The pressing mounting plate is provided with a guide sleeve, and the pressing platform is provided with a guide shaft, with each guide shaft inserted into the corresponding guide sleeve.

[0011] The two sides of the pressure mounting plate are slidably connected to the two sides of the upper end of the pressure bracket, and the pressure mounting plate is provided with a moving drive component.

[0012] The pressurization and pressing mechanisms are both mounted on a device base, and the device base is equipped with a protective cover. The pressurization and pressing mechanisms are both located inside the protective cover, and one side of the protective cover has an openable door.

[0013] The device base is equipped with a control system that controls the operation of the pressure measuring mechanism and the pressure reducing mechanism. The control system has a touch screen and operation buttons on its outer side.

[0014] The advantages and positive effects of this utility model are as follows: 1. This utility model can pressurize the oil gap pad by simulating the actual working pressure value through a pressure measuring mechanism, thereby obtaining the compression amount of the oil gap pad. Based on this compression amount, the number of oil gap pads to be configured can be determined in advance, thereby improving the adjustment efficiency of the oil gap pad after the coil is taken out of the furnace during actual operation, which greatly improves the production efficiency.

[0015] 2. The pressure measuring mechanism of this utility model uses a pressure sliding block to pressurize the oil gap pad. At the same time, the pressure measuring element at the other end of the measuring support detects the pressure on the oil gap pad in real time. When the pressure value reaches the set simulated actual working pressure value, the pressure measuring element sends a signal to stop the pressure sliding block from moving, thereby achieving the purpose of accurate simulation and ensuring that the final oil gap pad compression amount matches the actual compression amount.

[0016] 3. This utility model utilizes the pressing platform in the pressing mechanism to achieve the positioning of the oil gap pad, which can prevent the oil gap pad from moving during subsequent pressure measurement, thereby ensuring measurement accuracy. At the same time, it can also prevent special situations such as the oil gap pad jumping out under pressure, thereby ensuring measurement safety.

[0017] 4. In this utility model, multiple comb grooves are evenly arranged on the pressure slide of the pressure measuring mechanism, and multiple comb pressure blocks are evenly arranged on the lower side of the pressure platform of the pressure mechanism, each of which is embedded and cooperates with the corresponding comb groove. When the length of the oil gap pads after they are stacked (that is, the total thickness of each oil gap pad) is less than the length of the pressure platform, the excess comb pressure blocks after the pressure platform is pressed down can be embedded in the corresponding comb grooves to ensure the pressure positioning function of the remaining part of the pressure platform on the oil gap pads, and at the same time, it will not affect the movement of the pressure slide. Furthermore, since the oil gap pads themselves have a certain width along the vertical direction, this allows for sufficient gap between the lower end of the comb pressure block and the bottom of the corresponding comb groove to meet the measurement needs of the distance measuring system.

[0018] 5. The present invention provides a longitudinal limiting block and a transverse limiting block on the measuring support of the pressure measuring mechanism, which can cooperate with the limiting block when the oil gap pad is put in to align the oil gap pads. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 for Figure 1 Schematic diagram of the middle and lower pressure mechanism. Figure 3 for Figure 1 A schematic diagram of the medium-pressure measuring mechanism. Figure 4 for Figure 1 Enlarged view of point A in the image. Figure 5 This is a schematic diagram of the working state of this utility model.

[0020] Among them, 1 is the pressing mechanism, 101 is the pressing drive device, 102 is the pressing mounting plate, 1021 is the guide sleeve, 1022 is the slide plate, 1023 is the slider, 103 is the pressing platform, 1031 is the guide shaft, 104 is the pressing bracket, and 1041 is the slide rail; 2 is the pressurizing and measuring mechanism, 201 is the pressurizing device, 202 is the distance measuring system, 203 is the coupling, 204 is the pressurizing slide, 2041 is the comb groove, 2042 is the slide side plate, 2043 is the slide drive plate, 205 is the measuring support, 2051 is the pad placement platform, 2052 is the longitudinal limit block, 2053 is the transverse limit block, 3 is the device base, 4 is the protective cover, 401 is the protective cover door, 5 is the control system, 501 is the touch screen display, 502 is the operation button, and 6 is the oil gap pad. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] like Figures 1-5 As shown, this utility model includes a pressure measuring mechanism 2 and a pressure-lowering mechanism 1, wherein... Figures 3-5 As shown, the pressure measuring mechanism 2 includes a pressure device 201, a pressure slide 204, and a measuring support 205. The oil gap pad 6 to be measured is placed on the measuring support 205. The pressure slide 204 is driven to move on the measuring support 205 by the pressure device 201, and the oil gap pad 6 is pressurized by the pressure slide 204. The pressure slide 204 is equipped with a distance measuring system 202 for measuring the change in compression of the oil gap pad 6, and the measuring support 205 is equipped with a pressure measuring element for measuring the pressure applied to the oil gap pad 6. Figure 2 As shown, the pressing mechanism 1 is equipped with a liftable pressing platform 103, and as... Figure 5 As shown, the oil gap pad 6 is positioned by being pressed down by the pressing platform 103 during measurement. In this embodiment, the pressure measuring element is a pressure sensor, which is a commercially available product.

[0023] like Figures 3-5 As shown, in this embodiment, the measuring support 205 is provided with a pad placement platform 2051, and the pressure slide 204 is slidably disposed on the pad placement platform 2051. A longitudinal limiting block 2052 is provided at one end of the pad placement platform 2051 away from the pressure slide 204, and a transverse limiting block 2053 is provided on one side of the pad placement platform 2051. During operation, the operator uses a dedicated counter to count the total number of oil gap pads 6 on one support bar in the coil height direction, and then places them in a drying oven for drying. After drying, as shown... Figure 5 As shown, the oil gap pads 6 need to be neatly arranged on the pad placement platform 2051, wherein the longitudinal limiting block 2052 and the transverse limiting block 2053 cooperate to limit and align the oil gap pads 6. In addition, the pressure measuring element is disposed on the longitudinal limiting block 2052.

[0024] like Figures 3-5 As shown, in this embodiment, a pressure screw is provided on the lower side of the measuring support 205. The pressure device 201 is located on the outside of the measuring support 205 and connected to the pressure screw via a coupling 203. A slide drive plate 2043 is provided on the lower side of the pressure slide 204, and a pressure nut is provided inside the slide drive plate 2043 and fitted onto the pressure screw. When this invention is in operation, the pressure device 201 drives the pressure screw to rotate, which in turn drives the pressure slide 204 to move as a whole through the pressure nut and the slide drive plate 2043, applying pressure to the oil gap pad 6. The pressure device 201 can be a servo motor.

[0025] like Figures 3-5 As shown, in this embodiment, the pressure slide 204 has slide side plates 2042 on both sides that are connected to the slide drive plate 2043, and the slide side plates 2042 and the measuring support 205 can be slidably connected through a structure such as a slide rail and a slider, thereby realizing the slidable connection between the pressure slide 204 and the measuring support 205.

[0026] like Figures 3-5 As shown, in this embodiment, a plurality of comb-tooth protrusions are evenly arranged on the upper side of the pressure slide 204, and comb-tooth grooves 2041 are formed between adjacent comb-tooth protrusions. The ranging system 202 is disposed on the end plate of the measuring support 205 near the end of the pressure device 201, and the ranging system 202 can detect the distance between itself and the oil gap pad 6 through the comb-tooth grooves 2041. In this embodiment, the ranging system 202 is a magnetic grating measurement sensing system, which is a commercially available product.

[0027] In this embodiment, the lower surface of the pressing platform 103 of the pressing mechanism 1 is uniformly arranged with multiple comb-tooth pressing blocks, and each comb-tooth pressing block can be inserted into the corresponding comb-tooth groove 2041 on the pressurizing slide 204. Figure 5 As shown, when the length of the oil gap pads 6 after they are stacked (that is, the total thickness of each oil gap pad 6) is the same as that of the pressing platform 103, the pressing platform 103 can directly press down and position the oil gap pads 6. When the length of the oil gap pads 6 after they are stacked is less than the length of the pressing platform 103, the excess comb teeth of the pressing platform 103 after pressing down can be embedded into the corresponding comb teeth grooves 2041. This ensures that the remaining part of the pressing platform 103 can press down and position the oil gap pads 6. At the same time, the comb teeth and the corresponding comb teeth grooves 2041 can move relative to each other without affecting the movement of the pressure slide 204. Furthermore, since the oil gap pads 6 have a certain width along the vertical direction, this allows for sufficient gap between the lower end of the comb teeth and the bottom of the corresponding comb teeth groove 2041 to meet the measurement needs of the ranging system 202.

[0028] like Figures 1-2 As shown, in this embodiment, the pressing mechanism 1 includes a pressing bracket 104, a pressing mounting plate 102, and a pressing drive device 101. The pressing mounting plate 102 is located on the upper end of the pressing bracket 104, the pressing drive device 101 is located on the upper side of the pressing mounting plate 102, and the pressing platform 103 is located inside the pressing bracket 104 and is driven to rise and fall by the pressing drive device 101. The pressing drive device 101 can be a linear drive device such as a hydraulic cylinder or a pneumatic cylinder as needed.

[0029] like Figure 2As shown, in this embodiment, the pressing mounting plate 102 is provided with a guide sleeve 1021, and the pressing platform 103 is provided with a guide shaft 1031. Each guide shaft 1031 is inserted into the corresponding guide sleeve 1021, which can ensure the vertical lifting of the pressing platform 103. A limit block can be provided at the upper end of the guide shaft 1031 to prevent it from disengaging.

[0030] like Figure 2 As shown, in this embodiment, the two sides of the pressing mounting plate 102 are slidably connected to the two sides of the upper end of the pressing bracket 104, and the pressing mounting plate 102 is provided with a moving drive assembly to realize movement adjustment. In this embodiment, the moving drive assembly includes a motor and a gear. The gear is driven to rotate by the motor, and the pressing bracket 104 is provided with a rack, and the gear meshes with the rack. In this way, the motor drives the gear to roll along the rack, thereby driving the pressing mounting plate 102 to move. With the above structure, the position of the pressing platform 103 can be adjusted as needed to ensure that the oil gap pad 6 is pressed and positioned, and that the comb tooth pressure block and the comb tooth groove 2041 are aligned respectively.

[0031] like Figure 2 As shown, in this embodiment, the upper end of the pressing bracket 104 is provided with slide rails 1041 on both sides, the pressing mounting plate 102 is provided with slide plates 1022 on both sides, and the slide plate 1022 is provided with a slider 1023 on the lower side to cooperate with the slide rail 1041 on the corresponding side. The moving drive component can be provided on the slide plate 1022.

[0032] like Figure 1 As shown, in this embodiment, the pressure measuring mechanism 2 and the pressure-reducing mechanism 1 are both mounted on a device base 3, and the device base 3 is provided with a protective cover 4. The pressure device 201 and the pressure-reducing mechanism 1 are both located in the protective cover 4, and the protective cover 4 has an openable protective cover door 401 on one side.

[0033] like Figure 1 As shown, in this embodiment, the device base 3 is provided with a control system 5 for controlling the operation of the pressure measuring mechanism 2 and the pressure-down mechanism 1. The control system 5 is provided with a touch screen 501 and operation buttons 502 on its outer side to realize operation control. The touch screen 501 and operation buttons 502 are both commercially available products.

[0034] The working principle of this utility model is as follows: The present invention includes the following steps in operation: Step 1: The operator counts the total number of oil gap pads (6) on one support bar along the coil height direction, then places it in the drying oven for drying. After drying, as shown... Figure 5As shown, six oil gap shims are placed neatly on the shim placement platform 2051 of the measuring support 205, wherein... Figure 3 As shown, the longitudinal limiting block 2052 and the transverse limiting block 2053 on the measuring support 205 can cooperate to limit the movement of each oil gap pad 6.

[0035] In addition, in this step, the total length of each oil gap pad 6 along the horizontal direction is the total thickness of each oil gap pad 6, and the length of a single oil gap pad 6 along the vertical direction is the width of a single oil gap pad 6.

[0036] Step Two: As Figure 1 As shown, after the oil gap pads 6 are aligned, the operator first closes the protective cover door 401, and then sets the relevant parameters on the touch screen 501 of the control system 5. The relevant parameters include the pressure value of the pressure measuring mechanism 2 simulating the actual working pressure.

[0037] Step 3: After the parameters are set, as follows Figure 1 As shown, the operator presses the operation button 502 on one side of the control system 5 to start the automatic pressure measurement operation of this utility model, specifically: Step 3.1: The pressurizing device 201 in the pressurizing measuring mechanism 2 is activated first to drive the pressurizing slide 204 to move towards the oil gap pad 6 for contact, thereby achieving initial limiting of the oil gap pad 6 in the length direction. At this time, the moving distance of the pressurizing slide 204 can be controlled by the ranging system 202. After the pressurizing slide 204 moves into place and contacts the oil gap pad, the distance value between the measuring system 202 and the oil gap pad 6 is used as the first distance value for subsequent pad compression calculation. At this time, the oil gap pad 6 is not under pressure.

[0038] Step 3.2: Then, the pressing drive device 101 in the pressing mechanism 1 drives the pressing platform 103 to descend and press down on the oil gap pad 6 to achieve positioning of the oil gap pad 6. This can prevent the oil gap pad 6 from moving during the subsequent pressurization measurement process, thereby ensuring accurate measurement. At the same time, it can also prevent the special situation of the oil gap pad 6 jumping out under pressure, thereby ensuring measurement safety.

[0039] In addition, in this step, the pressure of the pressure-driving device 101 needs to be strictly controlled. It is only necessary to ensure that the oil gap pad 6 does not move. The pressure value should not be too large to affect the horizontal compression deformation of the oil gap pad.

[0040] Step 3.3: The pressurizing device 201 in the pressurizing measuring mechanism 2 drives the pressurizing slide 204 to move again to start applying pressure to the oil gap pad 6. At the same time, the pressure measuring element on the measuring support 205 cooperates to detect the pressure of the oil gap pad 6 in real time.

[0041] Step 3.4: When the pressure value detected by the pressure measuring element reaches the simulated actual working pressure value set in step two, it sends a signal to the control system 5. The control system 5 controls the pressurizing device 201 to stop driving, and then the distance measuring system 202 measures the second distance value between itself and the oil gap pad 6 at this time.

[0042] Step 3.5: The control system 5 calculates the compression amount of the oil gap pad 6 based on the first gap value obtained in step 3.1 and the second gap value obtained in step 3.4.

[0043] After obtaining the compression amount of the oil gap pad 6 through the above steps, the number of oil gap pads 6 to be configured can be calculated by the control system 5 or manually by combining the compression amount and parameters such as coil height. This calculation is a well-known technology in the field.

Claims

1. A device for measuring the pressure of a transformer coil oil gap gasket, characterized in that: The device includes a pressure measuring mechanism (2) and a pressing mechanism (1). The pressure measuring mechanism (2) includes a pressure device (201), a pressure slide (204), and a measuring support (205). The oil gap pad (6) to be measured is placed on the measuring support (205). The pressure slide (204) is driven to move on the measuring support (205) by the pressure device (201), and the oil gap pad (6) is pressurized by the pressure slide (204). The pressure slide (204) is equipped with a distance measuring system (202) for measuring the compression change of the oil gap pad (6), and the measuring support (205) is equipped with a pressure measuring element for measuring the pressure of the oil gap pad (6). The pressing mechanism (1) is equipped with a liftable pressing platform (103), and the oil gap pad (6) is pressed down and positioned by the pressing platform (103) during measurement.

2. The transformer coil oil gap gasket pressure measuring device according to claim 1, characterized in that: The measuring support (205) is provided with a pad placement platform (2051), and the pressure slide (204) is slidably disposed on the pad placement platform (2051). The pad placement platform (2051) is provided with a longitudinal limiting block (2052) at the end away from the pressure slide (204), and a transverse limiting block (2053) is provided on one side of the pad placement platform (2051). The ranging system (202) is disposed on the end plate of the measuring support (205) near the pressure device (201), and the pressure measuring element is disposed on the longitudinal limiting block (2052).

3. The transformer coil oil gap gasket pressure measuring device according to claim 1, characterized in that: The measuring support (205) is provided with a pressure screw on its lower side. The pressure device (201) is located on the outside of the measuring support (205) and connected to the pressure screw. The pressure slide (204) is provided with a slide drive plate (2043) on its lower side. The slide drive plate (2043) is provided with a pressure nut fitted onto the pressure screw.

4. The transformer coil oil gap gasket pressure measuring device according to claim 3, characterized in that: The pressure slide (204) has slide side plates (2042) on both sides that are connected to the slide drive plate (2043), and the slide side plates (2042) are slidably connected to the measuring support (205).

5. The transformer coil oil gap gasket pressure measuring device according to claim 1, characterized in that: The upper side of the pressurizing slide (204) is uniformly arranged with multiple comb tooth protrusions, and comb tooth grooves (2041) are formed between adjacent comb tooth protrusions. The lower surface of the pressing platform (103) is uniformly arranged with multiple comb tooth pressure blocks that are respectively embedded and cooperate with the corresponding comb tooth grooves (2041).

6. The transformer coil oil gap gasket pressure measuring device according to claim 1, characterized in that: The pressing mechanism (1) includes a pressing bracket (104), a pressing mounting plate (102), and a pressing drive device (101). The pressing mounting plate (102) is located at the upper end of the pressing bracket (104), the pressing drive device (101) is located on the upper side of the pressing mounting plate (102), and the pressing platform (103) is located inside the pressing bracket (104) and is driven to rise and fall by the pressing drive device (101).

7. The transformer coil oil gap gasket pressure measuring device according to claim 6, characterized in that: The pressing mounting plate (102) is provided with a guide sleeve (1021), and the pressing platform (103) is provided with a guide shaft (1031), and each guide shaft (1031) is inserted into the corresponding guide sleeve (1021).

8. The transformer coil oil gap gasket pressure measuring device according to claim 6, characterized in that: The two sides of the pressure mounting plate (102) are slidably connected to the two sides of the upper end of the pressure bracket (104), and the pressure mounting plate (102) is provided with a moving drive component.

9. The transformer coil oil gap gasket pressure measuring device according to claim 1, characterized in that: The pressurizing measuring mechanism (2) and the pressing mechanism (1) are both located on a device base (3), and a protective cover (4) is provided on the device base (3). The pressurizing device (201) and the pressing mechanism (1) are both located in the protective cover (4), and an openable protective cover door (401) is provided on one side of the protective cover (4).

10. The transformer coil oil gap gasket pressure measuring device according to claim 9, characterized in that: The device base (3) is provided with a control system (5) that controls the operation of the pressure measuring mechanism (2) and the pressure-down mechanism (1). The control system (5) is provided with a touch screen (501) and operation buttons (502) on its outside.

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