A vibration-damped current transformer for traveling wave ranging

Abstract

The present application relates to the technical field of transformers, and specifically to a shock-absorbing current transformer for traveling wave ranging, comprising a transformer body and a shock-absorbing assembly arranged above the transformer body, wherein the shock-absorbing assembly comprises a housing assembly, a shock-absorbing swing arm, a resistance adjustment device, and a shock-absorbing compression spring. The housing assembly comprises a covering assembly, an articulated core shaft, and a double-ring skeleton; three shock-absorbing swing arms are provided, and the shock-absorbing swing arms are articulated with the articulated core shaft one by one; the resistance adjustment device comprises a resistance adjustment base ring, a resistance adjustment longitudinal fork, a lower arc hole plate, and a resistance adjustment locking ring; the shock-absorbing compression spring is provided in three pieces and wound on the inner ring of the compression spring, and one end of the shock-absorbing compression spring abuts against the shock-absorbing swing arm and the other end abuts against the resistance adjustment longitudinal fork. The shock-absorbing current transformer for traveling wave ranging described in this case restrains the cable passing through the current transformer through the shock-absorbing swing arm, so that it remains on the central axis of the transformer body, and has a good shock-absorbing effect.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a damped current transformer for traveling wave ranging. Background Art

[0002] The traveling wave ranging system includes at least a data acquisition unit, a signal processing unit, a time synchronization unit, a communication module, a master station analysis platform, and so on. The core device of the data acquisition unit is the current transformer, which is used to capture the high-frequency current traveling wave signal generated by the fault. It is usually installed at both ends of the transmission line, and each is independently configured. Because the cables in the transmission line are often in a swinging state due to external forces such as wind, the cables cause wear on the inner ring of the current transformer. Therefore, it is necessary to design a current transformer that can fix the cables at the central axis and has a shock-absorbing effect. Summary of the Invention

[0003] A shock-absorbing current transformer for traveling wave ranging comprises a transformer body and a shock-absorbing assembly arranged above the transformer body. The shock-absorbing assembly comprises a housing assembly, a shock-absorbing swing arm, a resistance adjustment device, and a shock-absorbing compression spring.

[0004] The cam is secured to the upper edge of the cam and secured to the lower edge of the cam.

[0005] There are three shock-absorbing swing arms, and the shock-absorbing swing arms are hingedly matched with the hinge core shaft one by one; the shock-absorbing swing arm includes a rotatable swing arm ring arranged in the middle of the hinge core shaft, a swing arm body arranged at one end of the swing arm ring and passing through the corresponding swing arm through hole, and a shock-absorbing cross fork arranged on the outside of the swing arm ring and sleeved on the inner ring of the compression spring; an annular groove is provided in the middle of the hinge core shaft to match the swing arm ring.

[0006] The resistance adjustment device includes a resistance adjustment base ring below the locking outer ring, resistance adjustment longitudinal forks evenly distributed circumferentially on the inner wall of the resistance adjustment base ring and sleeved below the inner ring of the compression spring, a lower arc hole plate evenly distributed circumferentially on the inner wall of the resistance adjustment base ring and plugged into the lower half of the corresponding skeleton longitudinal rod, and a resistance adjustment locking ring provided on the inner edge of the upper end face of the resistance adjustment base ring and locked with the lower end of the locking outer ring. The lower arc hole plate is located above the corresponding lifting compression spring.

[0007] The shock-absorbing compression spring is provided with three shock-absorbing compression springs and is wound on the inner ring of the compression spring. One end of the shock-absorbing compression spring abuts against the shock-absorbing swing arm and the other end abuts against the resistance-adjusting longitudinal fork.

[0008] As a further implementation:

[0009] The shock absorber assembly also includes a limiting device for limiting the swing amplitude of the shock absorber swing arm, and the limiting device includes a limiting base ring arranged above the locking outer ring, a blocking rod base uniformly distributed circumferentially on the inner edge of the limiting base ring, a blocking plug arranged below the corresponding blocking rod base and blocked on one side of the shock absorber cross fork, an upper arc hole plate uniformly distributed circumferentially on the inner wall of the limiting base ring and plugged into the upper half of the corresponding skeleton longitudinal rod, and a limiting lock ring arranged on the inner edge of the lower end face of the limiting base ring and locked with the locking outer ring. The upper arc hole plate is located below the corresponding drop compression spring.

[0010] As a further implementation:

[0011] The resistance trimming device further includes resistance trimming grooves uniformly distributed circumferentially on the upper end of the outer edge of the resistance trimming base ring;

[0012] The limiting device further includes limiting grooves uniformly distributed circumferentially on the lower end of the outer edge of the limiting base ring;

[0013] The shock absorber assembly also includes an adjustment ring assembly for controlling the resistance adjustment device and the position limiting device. The adjustment ring assembly includes an adjustment ring body sleeved outside the resistance adjustment base ring and the position limiting base ring, a spacer inner ring provided in the middle of the inner wall of the adjustment ring body and located between the resistance adjustment base ring and the position limiting base ring, and transmission side locks for transmission connection with the resistance adjustment groove and the position limiting groove are respectively provided on the lower and upper sides of the adjustment ring body;

[0014] The transmission side lock includes a side lock base arranged on the side of the adjustment ring body, a radial through hole arranged in the side lock base, a spring side hole arranged on the side of the radial through hole, a spring core shaft arranged in the spring side hole, a slidable transmission slide shaft arranged in the radial through hole, a perforated lug arranged on the side of the transmission slide shaft and sleeved on the spring core shaft, and a lock inner compression spring wound on the spring core shaft and located on the inner side of the perforated lug.

[0015] Beneficial effects:

[0016] The shock-absorbing current transformer for traveling wave ranging described in this case constrains the cable passing through the current transformer through a shock-absorbing swing arm, so that it remains on the central axis of the transformer body and has a good shock-absorbing effect.

[0017] The shock-absorbing current transformer for traveling wave ranging described in this case synchronously adjusts the damping of all shock-absorbing swing arms through a resistance adjustment device, thereby adjusting the shock-absorbing effect.

[0018] The damping current transformer for traveling wave ranging described in this case synchronously adjusts all the damping swing arms to stop through a limit device, thereby adjusting the swing amplitude of the damping swing arms.

[0019] The damped current transformer for traveling wave ranging described in this case can adjust the resistance adjustment device and the limit device through the adjustment ring assembly. It is easy to operate, has a rounded appearance and a sophisticated structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of an embodiment of the damped current transformer.

[0021] Figure 2 It is a schematic diagram of an embodiment of the shock-absorbing current transformer (omitting the upper stop ring).

[0022] Figure 3 It is an isometric cross-sectional view of one implementation of the damped current transformer.

[0023] Figure 4 It is a cross-sectional view of an implementation of the damped current transformer.

[0024] Figure 5 yes Figure 4 An enlarged schematic diagram of a state in part A.

[0025] Figure 6 yes Figure 4 An enlarged schematic diagram of another state of part A in the middle.

[0026] Figure 7 It is a cross-sectional view of an embodiment of the housing assembly.

[0027] Figure 8 Schematic diagram of an embodiment of the housing assembly (omitting the upper stop ring).

[0028] Figure 9 It is a schematic diagram of an embodiment of the shock-absorbing current transformer (omitting the upper stop ring, the adjustment ring assembly, and the limit device).

[0029] Figure 10 It is a schematic diagram of an embodiment of the shock-absorbing current transformer (omitting the upper stop ring and the adjustment ring assembly).

[0030] Figure 11 Schematic diagram of an embodiment of the resistance adjustment device.

[0031] Figure 12 Schematic diagram of an embodiment of the limiting device.

[0032] Figure 13 Schematic diagram of an embodiment of the adjustment assembly.

[0033] Figure 14 It is a partial sectional view of an axial section of an embodiment of the adjustment assembly.

[0034] In the picture:

[0035] 9. Transformer body;

[0036] 8. Shock absorber assembly;

[0037] 1. Housing assembly, 11. Cover assembly, 111. Inner connecting ring, 112. Upper stop ring, 113. Swing arm through hole, 12. Articulated mandrel, 13. Double-ring frame, 131. Compression spring inner ring, 132. Frame longitudinal rod, 133. Radial connecting rod, 134. Locking outer ring, 135. Lifting compression spring, 136. Lowering compression spring;

[0038] 2. Shock absorber swing arm, 21. Swing arm ring, 22. Swing arm body, 23. Shock absorber cross fork;

[0039] 3. Resistance trimming device, 31. Resistance trimming base ring, 32. Resistance trimming longitudinal fork, 33. Lower arc hole plate, 34. Resistance trimming locking ring, 35. Resistance trimming groove;

[0040] 4. Shock-absorbing compression spring;

[0041] 5. Limiting device, 51. Limiting base ring, 52. Stopper rod base, 53. Stop plug, 54. Upper arc hole plate, 55. Limiting locking ring, 56. Limiting groove;

[0042] 6. Adjusting ring assembly, 61. Adjusting ring body, 62. Spacer inner ring, 63. Transmission side lock, 631. Side lock base, 632. Radial through hole, 633. Spring side hole, 634. Spring core shaft, 635. Transmission slide shaft, 636. Perforated lug, 637. Lock inner compression spring. DETAILED DESCRIPTION

[0043] A shock-absorbing current transformer for traveling wave ranging includes a transformer body 9 and a shock-absorbing assembly 8 arranged above the transformer body 9. The shock-absorbing assembly 8 includes a housing assembly 1, a shock-absorbing swing arm 2, a resistance adjustment device 3, and a shock-absorbing compression spring 4.

[0044] The shell assembly 1 includes a covering assembly 11, an articulated core shaft 12, and a double-ring skeleton 13; the covering assembly 11 includes an inner connecting ring 111 provided above the inner edge of the transformer body 9, and an upper stop ring 112 provided on the outer edge above the inner connecting ring 111, and the inner wall of the inner connecting ring 111 is circumferentially uniformly provided with three swing arm through holes 113; the articulated core shaft 12 is provided with three, and the articulated core shaft 12 is circumferentially uniformly distributed between the upper stop ring 112 and the transformer body 9; the double-ring skeleton 13 includes a compression spring inner ring 131 coaxially arranged with the inner connecting ring 111, a circumferentially uniformly distributed inner ring 113 of the inner connecting ring 111, and a compression spring inner ring 131 coaxially arranged with the inner connecting ring 111. The skeleton longitudinal rods 132 are evenly distributed on the inner ring 131 of the compression spring, the radial connecting rods 133 are evenly distributed circumferentially on the outer edge of the inner ring 131 of the compression spring, and the locking outer ring 134 is provided at the outer end of the radial connecting rod 133. A lifting compression spring 135 is provided under each skeleton longitudinal rod 132, and a falling compression spring 136 is provided above each skeleton longitudinal rod 132. There are three skeleton longitudinal rods 132, and the upper end of the skeleton longitudinal rod 132 is connected to the upper stop ring 112 and the lower end is connected to the transformer body 9. The upper end face and the lower end face of the locking outer ring 134 are evenly distributed circumferentially with anti-rotation lock teeth.

[0045] There are three shock-absorbing swing arms 2, and the shock-absorbing swing arms 2 are hingedly matched with the hinge core shaft 12 one by one; the shock-absorbing swing arm 2 includes a rotatable swing arm ring 21 arranged in the middle of the hinge core shaft 12, a swing arm body 22 arranged at one end of the swing arm ring 21 and passing through the corresponding swing arm through hole 113, and a shock-absorbing cross fork 23 arranged on the outside of the swing arm ring 21 and sleeved on the inner ring 131 of the compression spring; an annular groove is provided in the middle of the hinge core shaft 12 to match the swing arm ring 21.

[0046] The resistance adjustment device 3 includes a resistance adjustment base ring 31 below the locking outer ring 134, resistance adjustment longitudinal forks 32 that are evenly distributed circumferentially on the inner wall of the resistance adjustment base ring 31 and sleeved below the inner ring 131 of the compression spring, a lower arc hole plate 33 that is evenly distributed circumferentially on the inner wall of the resistance adjustment base ring 31 and plugged into the lower half of the corresponding skeleton longitudinal rod 132, and a resistance adjustment locking ring 34 that is provided on the inner edge of the upper end surface of the resistance adjustment base ring 31 and locked with the lower end of the locking outer ring 134. The lower arc hole plate 33 is located above the corresponding lifting compression spring 135.

[0047] It needs to be explained that the lower arc hole plate 33 cooperates with the skeleton longitudinal rod 132 to ensure that the resistance adjustment device 3 remains coaxial with the housing assembly 1, and the resistance adjustment device 3 can rotate within a certain angle range; further, the lower arc hole plate 33 always maintains an upward lifting trend under the action of the lifting compression spring 135; further, even if the resistance adjustment device 3 is in a low position, the resistance adjustment longitudinal fork 32 always maintains contact with the shock-absorbing compression spring 4 to prevent it from falling out.

[0048] The shock-absorbing compression springs 4 are provided with three and are wound on the compression spring inner ring 131 . One end of the shock-absorbing compression spring 4 abuts against the shock-absorbing swing arm 2 and the other end abuts against the resistance-adjusting longitudinal fork 32 .

[0049] As a further implementation:

[0050] The shock absorber assembly 8 also includes a limiting device 5 for limiting the swing amplitude of the shock absorber swing arm 2, and the limiting device 5 includes a limiting base ring 51 arranged above the locking outer ring 134, a blocking rod base 52 uniformly distributed circumferentially on the inner edge of the limiting base ring 51, a blocking plug 53 arranged below the corresponding blocking rod base 52 and blocked on one side of the shock absorber cross fork 23, an upper arc hole plate 54 uniformly distributed circumferentially on the inner wall of the limiting base ring 51 and plugged into the upper half of the corresponding skeleton longitudinal rod 132, and a limiting locking ring 55 arranged on the inner edge of the lower end face of the limiting base ring 51 and locked with the locking outer ring 134. The upper arc hole plate 54 is located below the corresponding drop compression spring 136.

[0051] It needs to be explained that the upper arc hole plate 54 cooperates with the skeleton longitudinal rod 132 to ensure that the limit device 5 remains coaxial with the shell assembly 1, and the limit device 5 can rotate within a certain angle range; further, the upper arc hole plate 54 always maintains a downward sliding tendency under the action of the drop compression spring 136; further, even when the limit device 5 is in a high position, the blocking plug 53 always remains in contact with the shock absorber cross fork 23 to avoid it from falling out.

[0052] As a further implementation:

[0053] The resistance trimming device 3 further includes resistance trimming grooves 35 uniformly distributed circumferentially on the upper end of the outer edge of the resistance trimming base ring 31;

[0054] The limiting device 5 further includes limiting grooves 56 uniformly distributed circumferentially on the lower end of the outer edge of the limiting base ring 51;

[0055] The shock absorber assembly 8 also includes an adjustment ring assembly 6 for controlling the resistance adjusting device 3 and the position limiting device 5. The adjustment ring assembly 6 includes an adjustment ring body 61 sleeved outside the resistance adjusting base ring 31 and the position limiting base ring 51, a spacer inner ring 62 provided at the middle of the inner wall of the adjustment ring body 61 and located between the resistance adjusting base ring 31 and the position limiting base ring 51, and transmission side locks 63 for transmission connection with the resistance adjusting groove 35 and the position limiting groove 56 are respectively provided on the lower and upper sides of the adjustment ring body 61.

[0056] The transmission side lock 63 includes a side lock base 631 arranged on the side of the adjustment ring body 61, a radial through hole 632 arranged in the side lock base 631, a spring side hole 633 arranged on the side of the radial through hole 632, a spring core shaft 634 arranged in the spring side hole 633, a transmission slide shaft 635 slidably arranged in the radial through hole 632, a perforated lug 636 arranged on the side of the transmission slide shaft 635 and sleeved with the spring core shaft 634, and a lock inner compression spring 637 wound on the spring core shaft 634 and located on the inner side of the perforated lug 636.

[0057] The shock-absorbing current transformer described in this case has the effect of restraining and damping the cables passing through the transformer body:

[0058] As the instruction manual Figure 9 As shown:

[0059] Under normal conditions, the shock-absorbing compression spring 4 acts on the shock-absorbing cross fork 23, driving the shock-absorbing swing arm 2 to swing inward. The swing arm body 22 of the shock-absorbing swing arm 2 constrains the cable passing through the transformer body inward; the vibration generated by the cable is damped by the shock-absorbing swing arm 2.

[0060] In this case, the swing damping of the shock-absorbing swing arm 2 can also be adjusted:

[0061] According to the instruction manual Figure 3 、 4 , 5, and 9:

[0062] Push the adjustment ring assembly 6 downward, so that the inner spacer ring 62 drives the resistance adjustment device 3 downward, the resistance adjustment lock ring 34 is disengaged from the locking outer ring 134, and the rotational freedom of the resistance adjustment device 3 is unlocked;

[0063] Press the transmission slide shaft 635 and the perforated lug 636 of the transmission side lock 63 located below inward, so that they overcome the damping of the compression spring 637 in the lock and slide inward. The inner side of the transmission slide shaft 635 is inserted into the resistance adjustment groove 35, thus realizing the transmission connection between the adjustment ring assembly 6 and the resistance adjustment device 3.

[0064] Rotate the adjustment ring assembly 6 and the resistance adjustment device 3 to adjust the position of the resistance adjustment longitudinal fork 32, adjust the compression amount and damping of the shock-absorbing compression spring 4 under normal conditions, and further adjust the swing damping of the shock-absorbing swing arm 2;

[0065] In this case, the swing amplitude of the shock-absorbing swing arm 2 can also be adjusted:

[0066] According to the instruction manual Figure 3 、 4 , 6, 10 as shown:

[0067] Push the adjusting ring assembly 6 upward, so that the spacer inner ring 62 drives the limit device 5 upward, and the limit lock ring 55 is disengaged from the locking outer ring 134, and the rotational freedom of the limit lock ring 55 is unlocked;

[0068] Press the transmission slide shaft 635 and the perforated lug 636 of the transmission side lock 63 located above inward, so that they overcome the damping of the compression spring 637 in the lock and slide inward. The inner side of the transmission slide shaft 635 is inserted into the limiting groove 56, thus realizing the transmission connection between the adjustment ring assembly 6 and the limiting device 5.

[0069] Rotate the adjustment ring assembly 6 and the limit device 5 to adjust the position of the blocking plug 53, thereby adjusting the static position of the shock absorber fork 23 under normal conditions, thereby adjusting the position and posture of the shock absorber swing arm 2 under normal conditions, and adjusting the swing amplitude of the shock absorber swing arm 2.

Claims

1. A damped current transformer for traveling wave ranging, comprising a transformer body (9), characterized in that: It also includes a shock absorbing assembly (8) arranged above the transformer body (9), and the shock absorbing assembly (8) includes: A housing assembly (1) comprising a covering assembly (11), an articulated core shaft (12), and a double-ring frame (13); The covering assembly (11) comprises an inner connecting ring (111) provided above the inner edge of the transformer body (9), and an upper stop ring (112) provided above the outer edge of the inner connecting ring (111); the inner wall of the inner connecting ring (111) is provided with three swing arm through holes (113) uniformly distributed in the circumferential direction; Three hinged core shafts (12) are provided, and the hinged core shafts (12) are evenly distributed circumferentially between the upper stop ring (112) and the transformer body (9); The double-ring skeleton (13) includes a compression spring inner ring (131) coaxially arranged with the inner connecting ring (111), skeleton longitudinal rods (132) circumferentially uniformly distributed on the compression spring inner ring (131), radial connecting rods (133) circumferentially uniformly distributed on the outer edge of the compression spring inner ring (131), and a locking outer ring (134) provided at the outer end of the radial connecting rod (133), a lifting compression spring (135) is provided below each skeleton longitudinal rod (132), and a falling compression spring (136) is provided above each skeleton longitudinal rod (132); There are three shock-absorbing swing arms (2), and the shock-absorbing swing arms (2) are hingedly engaged with the hinge core shafts (12) one by one; The resistance adjusting device (3) comprises a resistance adjusting base ring (31) below the locking outer ring (134), resistance adjusting longitudinal forks (32) uniformly distributed circumferentially on the inner wall of the resistance adjusting base ring (31) and sleeved below the inner ring (131) of the compression spring, a lower arc hole plate (33) uniformly distributed circumferentially on the inner wall of the resistance adjusting base ring (31) and plugged into the lower half of the corresponding skeleton longitudinal rod (132), and a resistance adjusting locking ring (34) provided on the inner edge of the upper end surface of the resistance adjusting base ring (31) and locked with the lower end of the locking outer ring (134), wherein the lower arc hole plate (33) is located above the corresponding lifting compression spring (135); A shock-absorbing compression spring (4), wherein three shock-absorbing compression springs (4) are provided and wound on the compression spring inner ring (131), and one end of the shock-absorbing compression spring (4) abuts against the shock-absorbing swing arm (2) and the other end abuts against the resistance-adjusting longitudinal fork (32); The shock absorber assembly (8) further includes a limiting device (5) for limiting the swing amplitude of the shock absorber swing arm (2), the limiting device (5) including a limiting base ring (51) provided above the locking outer ring (134), a blocking rod base (52) uniformly distributed circumferentially on the inner edge of the limiting base ring (51), a blocking plug (53) provided below the corresponding blocking rod base (52) and blocked on one side of the shock absorber cross fork (23), an upper arc hole plate (54) uniformly distributed circumferentially on the inner wall of the limiting base ring (51) and plugged into the upper half of the corresponding skeleton longitudinal rod (132), and a limiting locking ring (55) provided on the inner edge of the lower end surface of the limiting base ring (51) and locked with the locking outer ring (134), wherein the upper arc hole plate (54) is located below the corresponding drop compression spring (136); The resistance adjustment device (3) further includes resistance adjustment grooves (35) uniformly distributed circumferentially on the upper end of the outer edge of the resistance adjustment base ring (31); The limiting device (5) further comprises limiting grooves (56) uniformly distributed circumferentially at the lower end of the outer edge of the limiting base ring (51); The shock absorption assembly (8) further includes an adjusting ring assembly (6) for controlling the resistance adjusting device (3) and the position limiting device (5), the adjusting ring assembly (6) including an adjusting ring body (61) sleeved outside the resistance adjusting base ring (31) and the position limiting base ring (51), a spacer inner ring (62) provided at the middle of the inner wall of the adjusting ring body (61) and located between the resistance adjusting base ring (31) and the position limiting base ring (51), and transmission side locks (63) for transmission connection with the resistance adjusting groove (35) and the position limiting groove (56) are provided on the lower and upper sides of the side of the adjusting ring body (61); When the limiting device (5) is in the high position, the blocking plug (53) always maintains contact with the shock-absorbing cross fork (23); When the resistance regulating device (3) is in a low position, the resistance regulating longitudinal fork (32) always maintains contact with the shock absorbing compression spring (4).

2. The damped current transformer for traveling wave ranging according to claim 1, characterized in that: The shock-absorbing swing arm (2) comprises a swing arm ring (21) rotatably arranged in the middle of the hinge core shaft (12), a swing arm body (22) arranged at one end of the swing arm ring (21) and passing through a corresponding swing arm through hole (113), and a shock-absorbing cross fork (23) arranged outside the swing arm ring (21) and sleeved on the inner ring (131) of the compression spring.

3. The damped current transformer for traveling wave ranging according to claim 2, characterized in that: The transmission side lock (63) comprises a side lock base (631) provided on the side of the adjusting ring body (61), a radial through hole (632) provided in the side lock base (631), a spring side hole (633) provided on the side of the radial through hole (632), a spring core shaft (634) provided in the spring side hole (633), a transmission slide shaft (635) slidably provided in the radial through hole (632), a holed lug (636) provided on the side of the transmission slide shaft (635) and sleeved with the spring core shaft (634), and a lock inner compression spring (637) wound around the spring core shaft (634) and located on the inner side of the holed lug (636).

4. The damped current transformer for traveling wave ranging according to claim 3, characterized in that: Three skeleton longitudinal rods (132) are provided, and the upper ends of the skeleton longitudinal rods (132) are connected to the upper stop ring (112) and the lower ends are connected to the mutual inductor body (9).

5. The damped current transformer for traveling wave ranging according to claim 4, characterized in that: The upper end surface and the lower end surface of the locking outer ring (134) are respectively uniformly distributed with anti-rotation locking teeth in the circumferential direction.

6. The damped current transformer for traveling wave ranging according to claim 5, characterized in that: The middle portion of the hinge core shaft (12) is provided with an annular groove that cooperates with the swing arm ring (21).

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