An explosion-proof transformer for electric dehydration

Abstract

The present application relates to the technical field of transformers, and specifically to an explosion-proof transformer for electric dehydration, which adopts an explosion-proof shell, and the explosion-proof shell includes a main box, a high-voltage junction box, a high-voltage output flange, a low-voltage junction box, and an oil storage tank. An oil pipe is also provided above the oil storage tank, and a breathing valve assembly is also provided at the end of the oil pipe; the breathing valve assembly includes a telescopic sleeve, a first-level telescopic assembly, and a water-absorbing medium: the telescopic sleeve includes a fixed outer cylinder and a telescopic inner cylinder, and the telescopic inner cylinder can be slidably arranged below the fixed outer cylinder; the first-level telescopic assembly is used to limit the sliding freedom of the telescopic inner cylinder in the fixed outer cylinder; the water-absorbing medium is arranged in the telescopic sleeve. The explosion-proof transformer described in this case has a breathing valve assembly connected to the oil storage tank through an oil pipe, which effectively filters water vapor in the outside atmosphere; the breathing valve assembly can also adjust the volume of the telescopic sleeve through the first-level telescopic assembly, and then load water-absorbing media of different capacities to adapt to different working conditions.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to an explosion-proof transformer for electric dehydration. Background Art

[0002] The explosion-proof transformers used for electric dehydration mostly adopt oil-immersed sealed transformers, in which the transformer oil can ensure the high-load operation of the transformer and provide insulation and cooling. The main box of the transformer also needs to be designed with an oil storage tank with a certain volume connected to the main box, so that the oil in the main box can enter the oil storage tank after being heated and expanded, thereby balancing the pressure in the main box. Furthermore, the oil storage tank also needs to be designed with at least one breathing valve that is connected to the air and has a water-absorbing medium, so that the air in the inner cavity of the oil storage tank above the oil can be connected to the outside world. When the oil rises, the air in the oil storage tank is discharged to the outside through the breathing valve. When the oil drops, the outside air enters the upper part of the inner cavity of the oil storage tank through the breathing valve, and in the above process, the water vapor in the air is always filtered out to prevent water vapor from entering the oil storage tank.

[0003] The breathing valve structure of the explosion-proof transformer in the prior art is simple, and the volume cannot be adjusted to load water-absorbing media of different capacities, and the water-absorbing media cannot be quickly replaced. Therefore, it is necessary to design an explosion-proof transformer with a new breathing valve. Summary of the invention

[0004] An explosion-proof transformer for electric dehydration, using an explosion-proof housing, the explosion-proof housing includes a main box, a high-voltage junction box, a high-voltage output flange, a low-voltage junction box, and an oil storage tank. An oil pipe is also provided above the oil storage tank, and a breathing valve assembly is also provided at the end of the oil pipe;

[0005] The breathing valve assembly includes a telescopic sleeve, a first-stage telescopic assembly, and a water-absorbing medium:

[0006] The telescopic sleeve comprises a fixed outer cylinder and a telescopic inner cylinder, and the telescopic inner cylinder is slidably arranged below the fixed outer cylinder;

[0007] The first-stage telescopic assembly is used to limit the sliding freedom of the telescopic inner cylinder in the fixed outer cylinder;

[0008] The water absorbing medium is arranged in the telescopic sleeve.

[0009] As a further implementation:

[0010] The fixed outer cylinder comprises an annular lower bottom, an annular groove arranged on the inner wall of the annular lower bottom, a spacing inner ring arranged in the annular groove at equal intervals, a breathable upper tube formed above the annular lower bottom, an annular upper top arranged above the breathable upper tube, and a connecting upper tube arranged above the annular upper top and connected to the oil pipe;

[0011] The telescopic inner cylinder comprises an inner cylinder body slidably arranged in the fixed outer cylinder, radial insert tubes uniformly distributed on the inner wall of the inner cylinder body in the circumferential direction, a longitudinal anti-rotation rod arranged in the radial insert tube, a rotating inner tube arranged at the stop end of the radial insert tube, a built-in annular groove arranged on the inner wall of the rotating inner tube and connected to the radial insert tube, an inner cylinder bottom hole arranged in the center of the lower bottom of the inner cylinder body, and a transverse anti-rotation rod arranged in the inner cylinder bottom hole.

[0012] As a further implementation:

[0013] The first-stage telescopic assembly includes a longitudinal movement component, a rotation component, and a radial movement component. The longitudinal movement component includes an adjustment center shaft that can be slidably inserted into the bottom hole of the inner cylinder, a rotation-stopping transverse hole that is arranged in the adjustment center shaft and plugged with the transverse rotation-stopping rod, a spring ring groove formed on the upper half of the adjustment center shaft, a reset spring wound in the spring ring groove, a sliding ring that can be slidably arranged in the spring ring groove and stopped above the reset spring, a sliding sleeve arranged outside the sliding ring, a driving plug formed on the outer wall of the sliding sleeve, a cylindrical base arranged at the top end of the adjustment center shaft, and a top ring groove formed on the outer wall of the cylindrical base;

[0014] The rotating assembly comprises a rotating sleeve rotatably arranged in the rotating inner tube, a spiral slot formed on the inner wall of the rotating sleeve and plugged with the driving plug block, and the outer wall of the rotating sleeve is uniformly distributed with inclined side plates inserted into the built-in annular grooves in the circumferential direction;

[0015] The radial assembly corresponds to the radial insert tube one by one, and includes a radial insert rod slidably disposed in the radial insert tube, a longitudinal anti-rotation hole disposed in the radial insert rod and plugged with the longitudinal anti-rotation rod, and a retraction compression spring disposed in the longitudinal anti-rotation hole and located on the inner side of the longitudinal anti-rotation rod;

[0016] The water absorbing medium is filled and arranged inside the fixed outer cylinder and above the telescopic inner cylinder.

[0017] As a further implementation:

[0018] Also included is a secondary telescopic assembly, the secondary telescopic assembly including an inner concave slot and an inner concave component;

[0019] The inner concave slots are evenly distributed on the outer wall of the rotating sleeve in the circumferential direction, the inner concave slots correspond to the inclined side plates one by one, and the inner concave slots are arranged at the counterclockwise distal end of the corresponding inclined side plates;

[0020] The concave component includes a rotating ring body rotatably arranged in the top ring groove, and rotating rods evenly distributed circumferentially at the lower end of the rotating ring body. The rotating rods are plugged into and correspond to the concave slots one by one. The lower end of the rotating rod is also provided with a gradually narrowing inclined connecting rod, and the inner side of the lower end of the inclined connecting rod is provided with a concave thin plate.

[0021] As a further implementation:

[0022] The outer wall of the rotating plug rod is formed into an arc shape that is cocircular with the outer wall of the adjusting central shaft.

[0023] As a further implementation:

[0024] The inclined side plate comprises an inclined section which gradually becomes thicker in a clockwise direction and a straight section which is arranged at the far end of the inclined section in the clockwise direction.

[0025] Beneficial effects:

[0026] The explosion-proof transformer described in this case has an explosion-proof shell with an explosion-proof structure. The high-voltage junction box, low-voltage junction box, oil storage tank, etc. are all sealed and explosion-proof connected to the main box body, and have good explosion-proof performance.

[0027] In the explosion-proof transformer described in this case, the breathing valve assembly is connected to the oil storage tank through an oil pipe, so that the air in the inner cavity of the oil storage tank above the oil can be connected to the outside world and effectively filter the water vapor in the outside atmosphere.

[0028] The explosion-proof transformer described in this case has a breathing valve assembly that can also unlock the freedom of relative movement of the telescopic inner cylinder and the fixed outer cylinder through a first-stage telescopic assembly, adjust the volume of the telescopic sleeve, and then load water-absorbing media of different capacities to adapt to different working conditions.

[0029] The explosion-proof transformer described in this case has a breathing valve assembly that can further disassemble the telescopic inner cylinder directly from the bottom of the fixed outer cylinder, so that the water-absorbing medium can be completely poured out from the telescopic sleeve, and the water-absorbing medium remaining on the inner wall of the fixed outer cylinder can be further cleaned. This is especially suitable for situations where the water-absorbing medium has been used for a long time or has become ineffective due to being wetted by rain or the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of an embodiment of the transformer.

[0031] Figure 2 It is a schematic diagram of an embodiment of the breathing valve assembly.

[0032] Figure 3 It is a cross-sectional view of an embodiment of the breathing valve assembly.

[0033] Figure 4 yes Figure 3 Sectional view of the first state of section AA.

[0034] Figure 5 yes Figure 3 Cross-sectional view of section AA in the second state.

[0035] Figure 6 yes Figure 3Cross-sectional view of the AA section in the third state.

[0036] Figure 7 It is a cross-sectional view of an embodiment of the telescopic sleeve.

[0037] Figure 8 It is a cross-sectional view of an embodiment of a first-stage telescopic assembly.

[0038] Fig. 9 It is a cross-sectional view of a first embodiment of a two-stage telescopic assembly.

[0039] Fig.10 It is a cross-sectional view of a second embodiment of a two-stage telescopic assembly.

[0040] Fig.11 It is a cross-sectional view of a third embodiment of a two-stage telescopic assembly.

[0041] Fig.12 It is a schematic diagram of the cooperation state between the rotating component and the concave component.

[0042] Fig.13 It is a top view of the cooperation state of the rotating component and the concave component.

[0043] In the figure:

[0044] 9. Explosion-proof housing, 91. Main box, 92. High-voltage junction box, 93. High-voltage output flange, 94. Low-voltage junction box, 95. Oil storage tank, 96. Oil pipe;

[0045] 8. Breathing valve assembly;

[0046] 1. Telescopic sleeve;

[0047] 11. Fixed outer cylinder, 111. Annular lower bottom, 112. Annular groove, 113. Spacer inner ring, 114. Breathable upper tube, 115. Annular upper top, 116. Connecting upper tube;

[0048] 12. telescopic inner cylinder, 121. inner cylinder body, 122. radial insertion tube, 123. longitudinal anti-rotation rod, 124. rotating inner tube, 125. built-in annular groove, 126. bottom hole of inner cylinder, 127. transverse anti-rotation rod;

[0049] 2. First-stage telescopic assembly;

[0050] 21. longitudinal movement assembly, 211. adjusting middle axis, 212. anti-rotation transverse hole, 213. spring ring groove, 214. return compression spring, 215. sliding collar, 216. sliding sleeve, 217. driving plug, 218. cylindrical base, 219. top ring groove;

[0051] 22. Rotating assembly, 221. Rotating sleeve, 222. Spiral slot, 223. Inclined side plate, 2231. Inclined section, 2232. Straight section;

[0052] 23. radial assembly, 231. radial insertion rod, 232. longitudinal anti-rotation hole, 233. retraction compression spring;

[0053] 3. Secondary telescopic assembly;

[0054] 31. Concave slot;

[0055] 32. concave assembly, 321. rotating ring body, 322. rotating plug rod, 323. tilting connecting rod, 324. concave thin plate;

[0056] 4. Water-absorbing medium. DETAILED DESCRIPTION

[0057] An explosion-proof transformer for electric dehydration, using an explosion-proof housing 9, the explosion-proof housing 9 includes a main box 91, a high-voltage connection box 92, a high-voltage output flange 93, a low-voltage connection box 94, and an oil storage tank 95. An oil pipe 96 is also provided above the oil storage tank 95, and a breathing valve assembly 8 is also provided at the end of the oil pipe 96;

[0058] The breathing valve assembly 8 includes a telescopic sleeve 1, a primary telescopic assembly 2, and a water absorbing medium 4:

[0059] The telescopic sleeve 1 comprises a fixed outer cylinder 11 and a telescopic inner cylinder 12, wherein the telescopic inner cylinder 12 is slidably disposed below the fixed outer cylinder 11;

[0060] The first-stage telescopic assembly 2 is used to limit the sliding freedom of the telescopic inner cylinder 12 in the fixed outer cylinder 11;

[0061] The water absorbing medium 4 is arranged in the telescopic sleeve 1 .

[0062] As a further implementation:

[0063] The fixed outer cylinder 11 comprises an annular lower base 111, an annular groove 112 arranged on the inner wall of the annular lower base 111, a spacing inner ring 113 arranged in the annular groove 112 at equal intervals, a ventilating upper tube 114 formed above the annular lower base 111, an annular upper top 115 arranged above the ventilating upper tube 114, and a connecting upper tube 116 arranged above the annular upper top 115 and connected to the oil pipe 96;

[0064] The telescopic inner cylinder 12 includes an inner cylinder body 121 slidably arranged in the fixed outer cylinder 11, radial inserts 122 circumferentially evenly distributed on the inner wall of the inner cylinder body 121, a longitudinal anti-rotation rod 123 arranged in the radial insert 122, a rotating inner tube 124 arranged at the stop end of the radial insert 122, a built-in annular groove 125 arranged on the inner wall of the rotating inner tube 124 and connected with the radial insert 122, an inner cylinder bottom hole 126 arranged in the center of the lower bottom of the inner cylinder body 121, and a transverse anti-rotation rod 127 arranged in the inner cylinder bottom hole 126.

[0065] As a further implementation:

[0066] The first-stage telescopic assembly 2 includes a longitudinal movement component 21, a rotation component 22, and a radial component 23. The longitudinal movement component 21 includes an adjustment center shaft 211 that can be slidably inserted into the bottom hole 126 of the inner cylinder, a rotation-stopping transverse hole 212 that is arranged in the adjustment center shaft 211 and plugged with the transverse rotation-stopping rod 127, a spring ring groove 213 formed on the upper half of the adjustment center shaft 211, a return compression spring 214 wound in the spring ring groove 213, a sliding collar 215 that can be slidably arranged in the spring ring groove 213 and blocked above the return compression spring 214, a sliding sleeve 216 arranged outside the sliding collar 215, a driving plug 217 formed on the outer wall of the sliding sleeve 216, a cylindrical base 218 arranged at the top of the adjustment center shaft 211, and a top ring groove 219 formed on the outer wall of the cylindrical base 218;

[0067] The rotating assembly 22 includes a rotating sleeve 221 rotatably disposed in the rotating inner tube 124, a spiral slot 222 formed on the inner wall of the rotating sleeve 221 and plugged with the driving plug block 217, and inclined side plates 223 inserted into the built-in annular groove 125 are uniformly distributed on the outer wall of the rotating sleeve 221 in the circumferential direction.

[0068] The radial assembly 23 corresponds to the radial insert tube 122 one by one, and includes a radial insert rod 231 slidably disposed in the radial insert tube 122, a longitudinal anti-rotation hole 232 disposed in the radial insert rod 231 and plugged with the longitudinal anti-rotation rod 123, and a retraction compression spring 233 disposed in the longitudinal anti-rotation hole 232 and located on the inner side of the longitudinal anti-rotation rod 123;

[0069] The water absorbing medium 4 is filled and arranged inside the fixed outer cylinder 11 and above the telescopic inner cylinder 12 .

[0070] As a further implementation:

[0071] It also includes a secondary telescopic assembly 3, which includes a concave slot 31 and a concave component 32;

[0072] The inner concave slots 31 are evenly distributed on the outer wall of the rotating sleeve 221 in the circumferential direction, and the inner concave slots 31 correspond to the inclined side plates 223 one by one. The inner concave slots 31 are arranged at the counterclockwise distal end of the corresponding inclined side plates 223;

[0073] The concave component 32 includes a rotating ring body 321 rotatably arranged in the top ring groove 219, and a rotating rod 322 evenly distributed circumferentially at the lower end of the rotating ring body 321. The rotating rod 322 is plugged into and corresponds to the concave slot 31 one by one. The lower end of the rotating rod 322 is also provided with a gradually narrowing inclined connecting rod 323, and the inner side of the lower end of the inclined connecting rod 323 is provided with a concave thin plate 324.

[0074] As a further implementation:

[0075] The outer wall of the rotating rod 322 is formed into an arc shape that is cocircular with the outer wall of the adjusting central axis 211 .

[0076] As a further implementation:

[0077] The inclined side plate 223 includes an inclined section 2231 that gradually becomes thicker in the clockwise direction and a straight section 2232 that is arranged at the far end of the inclined section 2231 in the clockwise direction.

[0078] It should be noted that the oil pipe 96 described in this case is led out from the upper end of the oil storage tank 95, and the dead end of the oil pipe 96 is bent downward and connected to the breathing valve assembly 8.

[0079] It should be noted that the water absorbing medium 4 is silica gel particles or activated carbon particles.

[0080] This case also discloses a method for installing a breathing valve assembly 8, comprising the following steps:

[0081] Step 1, radial assembly 23 retracts once:

[0082] As the instruction manual Figure 4 , 5 As shown:

[0083] Hold the telescopic inner cylinder 12 with one hand, and push the adjusting center axis 211 upward with the other hand, thereby driving the return compression spring 214, the sliding ring 215, the sliding sleeve 216, the driving plug 217, the cylindrical base 218, the top annular groove 219, and the concave component 32 upward;

[0084] The driving plug 217 acts on the spiral slot 222 to drive the rotating component 22 to rotate in the rotating inner tube 124, and at the same time drives the inner concave component 32 to rotate, and the inner concave component 32 finally moves upward while rotating;

[0085] The straight section 2232 and the inclined section 2231 of the inclined side plate 223 and the rotating rod 322 of the concave component 32 sequentially pass through the corresponding radial component 23, and the retraction spring 233 acts on the radial rod 231 to make it retract inward until the radial rod 231 presses against the outer wall of the rotating rod 322;

[0086] As the instruction manual Fig. 9 , 10 As shown:

[0087] At this time, the distal end of the radial insertion rod 231 has slid into the inner edge of the spacing inner ring 113, and the telescopic inner cylinder 12 can move longitudinally without being blocked by the spacing inner ring 113, but at this time the distal end of the radial insertion rod 231 is still outside the inner edge of the annular groove 112, so it will not slip off the lower end of the annular groove 112;

[0088] Step 2, adjust the capacity of the telescopic sleeve 1:

[0089] The position of the fixed outer cylinder 11 above the telescopic inner cylinder 12 is the placement area of ​​the water-absorbing medium 4. By adjusting the position of the telescopic inner cylinder 12, the capacity of the water-absorbing medium 4 in the telescopic sleeve 1 can be adjusted.

[0090] Step 3, install the breathing valve assembly 8:

[0091] The water absorbing medium 4 is placed into the fixed outer cylinder 11 via the connecting upper tube 116;

[0092] Connect the upper connecting pipe 116 to the oil pipe 96 .

[0093] The present case also discloses a method for quickly pouring a water-absorbing medium 4, comprising the following steps:

[0094] Step 4, disassemble the breathing valve assembly 8:

[0095] Remove the connecting upper pipe 116 from the lower end of the oil pipe 96;

[0096] Step 5, radial component 23 retracts for the second time:

[0097] Step 5.1, according to the above step 1, complete the retraction of the radial component 23;

[0098] Step 5.2, secondary retraction of radial component 23:

[0099] As the instruction manual Figure 6 As shown:

[0100] The adjusting center shaft 211 is pushed upwards continuously, but the driving plug block 217 cannot continue to move upwards because the driving plug block 217 has slid to the upper stop end of the spiral slot 222;

[0101] The adjusting middle shaft 211, the cylindrical base 218, and the top annular groove 219 overcome the elastic force of the return compression spring 214 and move upward, driving the concave component 32 upward;

[0102] As the instruction manual Fig.11 As shown:

[0103] The rotating rod 322, the tilting connecting rod 323, and the concave thin plate 324 move upwards and pass through the radial assembly 23 in sequence, and the retraction compression spring 233 drives the radial rod 231 to continue to retract inwards until it abuts against the concave thin plate 324. At this time, the distal end of the radial rod 231 slides to the inner edge of the annular groove 112;

[0104] The telescopic inner cylinder 12 is pulled downward to slide out of the fixed outer cylinder 11, and the water-absorbing medium 4 inside the fixed outer cylinder 11 falls downward rapidly.

Claims

1. An explosion-proof transformer for electric dehydration, using an explosion-proof housing (9), Features: The explosion-proof housing (9) comprises a main box body (91), a high-voltage connection box (92), a high-voltage output flange (93), a low-voltage connection box (94), and an oil storage tank (95). An oil pipe (96) is provided above the oil storage tank (95), and a breathing valve assembly (8) is provided at the end of the oil pipe (96). The breathing valve assembly (8) comprises a telescopic sleeve (1), a first-stage telescopic assembly (2), and a water-absorbing medium (4): The telescopic sleeve (1) comprises a fixed outer cylinder (11) and a telescopic inner cylinder (12); the telescopic inner cylinder (12) is slidably disposed below the fixed outer cylinder (11); The first-stage telescopic assembly (2) is used to limit the sliding freedom of the telescopic inner cylinder (12) in the fixed outer cylinder (11); The water absorbing medium (4) is arranged in the telescopic sleeve (1); The fixed outer cylinder (11) comprises an annular lower base (111), an annular groove (112) arranged on the inner wall of the annular lower base (111), a spacing inner ring (113) arranged in the annular groove (112) at equal intervals, a breathable upper tube (114) formed above the annular lower base (111), an annular upper top (115) arranged above the breathable upper tube (114), and a connecting upper tube (116) arranged above the annular upper top (115) and connected to the oil pipe (96); The telescopic inner cylinder (12) comprises an inner cylinder body (121) slidably arranged in the fixed outer cylinder (11), radial insert tubes (122) uniformly distributed on the inner wall of the inner cylinder body (121) in the circumferential direction, a longitudinal anti-rotation rod (123) arranged in the radial insert tube (122), a rotating inner tube (124) arranged at the stop end of the radial insert tube (122), a built-in annular groove (125) arranged on the inner wall of the rotating inner tube (124) and communicating with the radial insert tube (122), an inner cylinder bottom hole (126) arranged in the center of the lower bottom of the inner cylinder body (121), and a transverse anti-rotation rod (127) arranged in the inner cylinder bottom hole (126); The first-stage telescopic assembly (2) comprises a longitudinal movement component (21), a rotation component (22), and a radial component (23), wherein the longitudinal movement component (21) comprises an adjustment center shaft (211) slidably inserted into the bottom hole (126) of the inner cylinder, a rotation-stopping transverse hole (212) provided in the adjustment center shaft (211) and pluggably engaged with the transverse rotation-stopping rod (127), a spring ring groove (213) formed on the upper half of the adjustment center shaft (211), and a spring ring groove (213) wound around the spring ring groove (211). 13), a return compression spring (214) in the spring ring groove (213), a sliding collar (215) slidably disposed in the spring ring groove (213) and stopped above the return compression spring (214), a sliding sleeve (216) disposed outside the sliding collar (215), a driving plug (217) formed on the outer wall of the sliding sleeve (216), a cylindrical base (218) disposed at the top end of the adjustment center shaft (211), and a top ring groove (219) formed on the outer wall of the cylindrical base (218); The rotating assembly (22) comprises a rotating sleeve (221) rotatably disposed in the rotating inner tube (124), a spiral slot (222) formed on the inner wall of the rotating sleeve (221) and plugged into the driving plug block (217), and inclined side plates (223) inserted into the built-in annular groove (125) are uniformly distributed on the outer wall of the rotating sleeve (221) in the circumferential direction; The radial component (23) corresponds to the radial insert tube (122) one by one, and comprises a radial insert rod (231) slidably disposed in the radial insert tube (122), a longitudinal anti-rotation hole (232) disposed in the radial insert rod (231) and plugged with the longitudinal anti-rotation rod (123), and a retracting compression spring (233) disposed in the longitudinal anti-rotation hole (232) and located on the inner side of the longitudinal anti-rotation rod (123); The water absorbing medium (4) is filled and arranged inside the fixed outer cylinder (11) and located above the telescopic inner cylinder (12).

2. An explosion-proof transformer for electric dehydration according to claim 1, Features: It also includes a two-stage telescopic assembly (3), wherein the two-stage telescopic assembly (3) includes an inner concave slot (31) and an inner concave component (32); The inner concave slots (31) are evenly distributed on the outer wall of the rotating sleeve (221) in the circumferential direction, the inner concave slots (31) correspond to the inclined side plates (223) one by one, and the inner concave slots (31) are arranged at the counterclockwise distal end of the corresponding inclined side plates (223); The concave assembly (32) comprises a rotating ring body (321) rotatably arranged in the top annular groove (219), and rotating rods (322) uniformly distributed circumferentially at the lower end of the rotating ring body (321), the rotating rods (322) being plugged into and corresponding to the concave slots (31) one by one, and the lower ends of the rotating rods (322) are further provided with gradually narrowing inclined connecting rods (323), and the inner side of the lower ends of the inclined connecting rods (323) is provided with a concave thin plate (324).

3. An explosion-proof transformer for electric dehydration according to claim 2, Features: The outer wall of the rotating plug rod (322) is formed into an arc shape that is cocircular with the outer wall of the adjusting central axis (211).

4. An explosion-proof transformer for electric dehydration according to claim 3, Features: The inclined side plate (223) comprises an inclined section (2231) which gradually becomes thicker in the clockwise direction, and a straight section (2232) which is arranged at the far end of the inclined section (2231) in the clockwise direction.

Images