Damping type current transformer for traveling wave distance measurement

Abstract

The invention relates to the technical field of mutual inductors, in particular to a shock absorption type current transformer for traveling wave distance measurement, which comprises a mutual inductor body and a shock absorption assembly arranged above the mutual inductor body, and the shock absorption assembly comprises a shell assembly, a shock absorption swing arm, a resistance adjusting device and a shock absorption pressure spring. The shell assembly comprises a coating assembly, a hinged mandrel and a double-ring framework; the number of the damping swing arms is three, and the damping swing arms are matched with the hinged core shafts in a one-to-one hinged mode. The resistance adjusting device comprises a resistance adjusting base ring, a resistance adjusting longitudinal fork, a lower arc hole plate and a resistance adjusting locking ring; the number of the damping compression springs is three, the damping compression springs are wound on the compression spring inner ring, one ends of the damping compression springs abut against the damping swing arm, and the other ends of the damping compression springs abut against the resistance adjusting longitudinal fork. According to the shock absorption type current transformer for traveling wave distance measurement, a cable penetrating through the current transformer is restrained through the shock absorption swing arm, so that the cable is kept at the middle shaft part of the transformer body, and the shock absorption type current transformer has a good shock absorption 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 at least includes a data acquisition unit, a signal processing unit, a time synchronization unit, a communication module, a master station analysis platform, etc. 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 item is independently configured. Since the cables in the transmission line are often in a swinging posture due to external forces such as wind, the cables cause wear on the inner ring of the current transformer. Therefore, it is required to design a current transformer that can fix the cable 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 shell assembly includes a covering assembly, an articulated core shaft, and a double-circle skeleton; the covering assembly includes an inner connecting ring arranged above the inner edge of the transformer body, an upper stop ring arranged at the outer edge above the inner connecting ring, and the inner wall of the inner connecting ring is circumferentially evenly provided with three swing arm through holes; the articulated core shafts are provided with three, and the articulated core shafts are circumferentially evenly distributed between the upper stop ring and the transformer body; the double-circle skeleton includes a compression spring inner ring coaxially arranged with the inner connecting ring, a skeleton longitudinal rod circumferentially evenly distributed on the compression spring inner ring, a radial connecting rod circumferentially evenly distributed on the outer edge of the compression spring inner ring, and a locking outer ring arranged at the outer end of the radial connecting rod, a lifting compression spring is respectively provided under each skeleton longitudinal rod, and a falling compression spring is respectively provided above each skeleton longitudinal rod; the skeleton longitudinal rods are provided with three, the upper ends of the skeleton longitudinal rods are connected to the upper stop ring and the lower ends are connected to the transformer body; the upper end surface and the lower end surface of the locking outer ring are respectively circumferentially evenly provided with anti-rotation locking teeth.

[0005] There are three shock-absorbing swing arms, and the shock-absorbing swing arms are hingedly matched with the hinged core shaft one by one; the shock-absorbing swing arm includes a swing arm ring rotatably arranged in the middle of the hinged 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 matching with the swing arm ring is provided in the middle of the hinged core shaft.

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

[0009] As a further implementation: 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; The limiting device also includes limiting grooves uniformly distributed circumferentially at the lower end of the outer edge of the limiting base ring; The shock absorbing assembly also includes an adjusting ring assembly for controlling the resistance adjusting device and the limiting device, the adjusting ring assembly includes an adjusting ring body sleeved outside the resistance adjusting base ring and the limiting base ring, a spacing inner ring provided at the middle of the inner wall of the adjusting ring body and between the resistance adjusting base ring and the limiting base ring, and transmission side locks for transmission connection with the resistance adjusting groove and the limiting groove are respectively provided at the lower and upper sides of the side of the adjusting ring body; 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 with 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.

[0010] Beneficial effects: The shock-absorbing current transformer for traveling wave ranging described in this case constrains the cable passing through the current transformer by means of a shock-absorbing swing arm so that the cable is kept on the central axis of the transformer body and has a good shock-absorbing effect.

[0011] 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.

[0012] The shock-absorbing current transformer for traveling wave ranging described in this case synchronously adjusts all shock-absorbing swing arms to stop through a limit device, thereby adjusting the swing amplitude of the shock-absorbing swing arms.

[0013] The damping 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, is easy to operate, has a rounded appearance and a sophisticated structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of an embodiment of the damping type current transformer.

[0015] Figure 2 It is a schematic diagram of an embodiment of the shock-absorbing current transformer (the upper stop ring is omitted).

[0016] Figure 3 It is an isometric cross-sectional view of one implementation of the damped current transformer.

[0017] Figure 4 It is a cross-sectional view of an implementation of the damped current transformer.

[0018] Figure 5 yes Figure 4 A magnified schematic diagram of a state in part A.

[0019] Figure 6 yes Figure 4 An enlarged schematic diagram of another state of part A in the middle.

[0020] Figure 7 It is a cross-sectional view of an embodiment of the housing assembly.

[0021] Figure 8 It is a schematic diagram of an embodiment of the housing assembly (with the upper stop ring omitted).

[0022] Fig. 9 It is a schematic diagram of an embodiment of the shock-absorbing current transformer (omitting the upper stop ring, the adjusting ring assembly, and the limit device).

[0023] Fig.10 It is a schematic diagram of an embodiment of the shock-absorbing current transformer (omitting the upper stop ring and the adjusting ring assembly).

[0024] Fig.11 Schematic diagram of an embodiment of the resistance adjustment device.

[0025] Fig.12It is a schematic diagram of an embodiment of the limiting device.

[0026] Fig.13 Schematic diagram of an embodiment of the adjustment assembly.

[0027] Fig.14 It is a partial cross-sectional view of an axial section of an embodiment of the adjustment assembly.

[0028] In the figure: 9. Transformer body; 8. Shock absorber assembly; 1. Shell assembly, 11. Covering assembly, 111. Inner connecting ring, 112. Upper stop ring, 113. Swing arm through hole, 12. Articulated mandrel, 13. Double-ring skeleton, 131. Compression spring inner ring, 132. Skeleton longitudinal rod, 133. Radial connecting rod, 134. Locking outer ring, 135. Lifting compression spring, 136. Dropping compression spring; 2. shock-absorbing swing arm, 21. swing arm ring, 22. swing arm body, 23. shock-absorbing cross fork; 3. Resistance adjustment device, 31. Resistance adjustment base ring, 32. Resistance adjustment longitudinal fork, 33. Lower arc hole plate, 34. Resistance adjustment locking ring, 35. Resistance adjustment groove; 4. Shock-absorbing compression spring; 5. Limiting device, 51. Limiting base ring, 52. Stopper rod base, 53. Stop plug, 54. Upper arc hole plate, 55. Limiting lock ring, 56. Limiting groove; 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 sliding shaft, 636. Lug with hole, 637. Lock inner compression spring. DETAILED DESCRIPTION

[0029] 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.

[0030] The shell assembly 1 includes a covering assembly 11, an articulated core shaft 12, and a double-circle skeleton 13; the covering assembly 11 includes an inner connecting ring 111 arranged above the inner edge of the transformer body 9, and an upper stop ring 112 arranged on the outer edge above the inner connecting ring 111, and the inner wall of the inner connecting ring 111 is circumferentially evenly 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 evenly distributed between the upper stop ring 112 and the transformer body 9; the double-circle skeleton 13 includes a compression spring inner ring 131 coaxially arranged with the inner connecting ring 111, a circumferential 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 arranged at the outer end of the radial connecting rods 133. A lifting compression spring 135 is respectively arranged under each skeleton longitudinal rod 132, and a falling compression spring 136 is respectively arranged 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 respectively evenly distributed circumferentially with anti-rotation locking teeth.

[0031] 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 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 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 matching with the swing arm ring 21 is provided in the middle of the hinge core shaft 12.

[0032] The resistance adjusting device 3 includes a resistance adjusting base ring 31 below the locking outer ring 134, resistance adjusting longitudinal forks 32 evenly 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 evenly 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, and the lower arc hole plate 33 is located above the corresponding lifting compression spring 135.

[0033] It needs to be explained that the lower arc hole plate 33 cooperates with the skeleton longitudinal rod 132 to ensure that the resistance adjusting device 3 remains coaxial with the housing assembly 1, and the resistance adjusting device 3 can rotate within a certain angle range; further, the lower arc hole plate 33 always maintains an upward lifting tendency under the action of the lifting compression spring 135; further, even if the resistance adjusting device 3 is in a low position, the resistance adjusting longitudinal fork 32 always maintains contact with the shock-absorbing compression spring 4 to prevent it from falling out.

[0034] The shock-absorbing compression spring 4 is provided with three pieces and is wound on the compression spring inner circle 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 .

[0035] As a further implementation: The shock absorber assembly 8 also includes a limit device 5 for limiting the swing amplitude of the shock absorber swing arm 2, and the limit device 5 includes a limit base ring 51 arranged above the locking outer ring 134, a stop rod base 52 circumferentially evenly distributed on the inner edge of the limit base ring 51, a stop plug 53 arranged below the corresponding stop rod base 52 and stopped on one side of the shock absorber cross fork 23, an upper arc hole plate 54 circumferentially evenly distributed on the inner wall of the limit base ring 51 and plugged into the upper half of the corresponding skeleton longitudinal rod 132, and a limit lock ring 55 arranged on the inner edge of the lower end surface of the limit base ring 51 and locked with the locking outer ring 134, and the upper arc hole plate 54 is located below the corresponding drop compression spring 136.

[0036] It needs to be explained that the upper arc hole plate 54 cooperates with the skeleton longitudinal rod 132 to achieve the coaxiality of the limit device 5 and 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 tendency to slide downward under the action of the drop compression spring 136; further, even when the limit device 5 is in a high position, the stop plug 53 always maintains contact with the shock-absorbing cross fork 23 to avoid falling out.

[0037] As a further implementation: The resistance adjusting device 3 further includes resistance adjusting grooves 35 uniformly distributed circumferentially on the upper end of the outer edge of the resistance adjusting base ring 31; The limiting device 5 further includes limiting grooves 56 uniformly distributed circumferentially at the lower end of the outer edge of the limiting base ring 51; The damping assembly 8 also includes an adjusting ring assembly 6 for controlling the resistance adjusting device 3 and the limiting device 5. The adjusting ring assembly 6 includes an adjusting ring body 61 sleeved outside the resistance adjusting base ring 31 and the limiting base ring 51, and a spacing 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 limiting base ring 51. The lower side and upper side of the adjusting ring body 61 are respectively provided with a transmission side lock 63 for transmission connection with the resistance adjusting groove 35 and the limiting groove 56. 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.

[0038] The shock-absorbing current transformer described in this case has the effect of restraining and damping the cables passing through the transformer body: As the instruction manual Fig. 9 As shown: 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, and 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.

[0039] In this case, the swing damping of the shock-absorbing swing arm 2 can also be adjusted: According to the instruction manual Figure 3 , 4 , 5, 9 as shown: Push the adjusting ring assembly 6 downward, so that the spacing inner ring 62 drives the resistance adjusting device 3 downward, the resistance adjusting locking ring 34 is out of contact with the locking outer ring 134, and the rotational freedom of the resistance adjusting device 3 is unlocked; Press the transmission slide shaft 635 and the perforated lug 636 of the transmission side lock 63 located below inward, so that it overcomes the damping of the compression spring 637 in the lock and slides inward, and the inner side of the transmission slide shaft 635 is inserted into the resistance adjustment groove 35, so as to realize the transmission connection between the adjustment ring assembly 6 and the resistance adjustment device 3; Rotate the adjusting ring assembly 6 and the resistance adjusting device 3 to adjust the position of the resistance adjusting 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; In this case, the swing amplitude of the shock-absorbing swing arm 2 can also be adjusted: According to the instruction manual Figure 3 , 4 , 6, 10 as shown: Push the adjusting ring assembly 6 upward, so that the spacing inner ring 62 drives the limiting device 5 upward, the limiting locking ring 55 is out of contact with the locking outer ring 134, and the rotational freedom of the limiting locking ring 55 is unlocked; The transmission sliding shaft 635 and the perforated lug 636 of the transmission side lock 63 located at the top are pressed inwards to make them slide inwards to overcome the damping of the compression spring 637 in the lock, and the inner side of the transmission sliding shaft 635 is inserted into the limiting groove 56 to realize the transmission connection between the adjustment ring assembly 6 and the limiting device 5; Rotate the adjusting ring assembly 6 and the limit device 5 to adjust the position of the stop plug 53, thereby adjusting the static position of the shock absorbing fork 23 under normal conditions, thereby adjusting the position and posture of the shock absorbing swing arm 2 under normal conditions, and adjusting the swing amplitude of the shock absorbing 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), the shock absorbing assembly (8) comprising: The housing assembly (1) comprises a covering assembly (11), a hinged core shaft (12), and a double-ring frame (13); The covering assembly (11) comprises an inner connecting ring (111) arranged above the inner edge of the transformer body (9), and an upper stop ring (112) arranged 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) evenly distributed in the circumferential direction; Three articulated core shafts (12) are provided, and the articulated core shafts (12) are evenly distributed in the circumferential direction between the upper stop ring (112) and the transformer body (9); The double-ring skeleton (13) comprises a compression spring inner ring (131) coaxially arranged with the inner connecting ring (111), skeleton longitudinal rods (132) circumferentially evenly distributed on the compression spring inner ring (131), radial connecting rods (133) circumferentially evenly distributed on the outer edge of the compression spring inner ring (131), and a locking outer ring (134) arranged at the outer end of the radial connecting rod (133), a lifting compression spring (135) is respectively arranged below each skeleton longitudinal rod (132), and a falling compression spring (136) is respectively arranged above each skeleton longitudinal rod (132); There are three shock-absorbing swing arms (2), and the shock-absorbing swing arms (2) are hingedly matched with the hinge core shafts (12) one by one; The resistance adjusting device (3) comprises a resistance adjusting base ring (31) below a 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) disposed 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 are wound around 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).

2. A 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 disposed in the middle of the hinged core shaft (12), a swing arm body (22) disposed 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) disposed outside the swing arm ring (21) and sleeved on an inner ring (131) of a compression spring.

3. A damped current transformer for traveling wave ranging according to claim 2, characterized in that: The shock absorber assembly (8) also includes a limit device (5) for limiting the swing amplitude of the shock absorber swing arm (2), the limit device (5) including a limit base ring (51) arranged above the locking outer ring (134), a stop rod base (52) circumferentially evenly distributed on the inner edge of the limit base ring (51), a stop plug (53) arranged below the corresponding stop rod base (52) and stopped on one side of the shock absorber cross fork (23), an upper arc hole plate (54) circumferentially evenly distributed on the inner wall of the limit base ring (51) and plugged with the upper half of the corresponding skeleton longitudinal rod (132), and a limit lock ring (55) arranged on the inner edge of the lower end surface of the limit 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).

4. A damped current transformer for traveling wave ranging according to claim 3, characterized in that: The resistance adjusting device (3) further comprises resistance adjusting grooves (35) uniformly distributed in the circumferential direction on the upper end of the outer edge of the resistance adjusting base ring (31); The limiting device (5) further comprises limiting grooves (56) uniformly distributed in the circumferential direction at the lower end of the outer edge of the limiting base ring (51); The damping assembly (8) further comprises an adjusting ring assembly (6) for controlling the resistance adjusting device (3) and the limiting device (5), wherein the adjusting ring assembly (6) comprises an adjusting ring body (61) sleeved outside the resistance adjusting base ring (31) and the limiting base ring (51), a spacing inner ring (62) arranged at the middle of the inner wall of the adjusting ring body (61) and located between the resistance adjusting base ring (31) and the limiting base ring (51), and transmission side locks (63) for transmission connection with the resistance adjusting groove (35) and the limiting groove (56) are respectively arranged at the lower and upper sides of the side of the adjusting ring body (61).

5. A damped current transformer for traveling wave ranging according to claim 4, characterized in that: The transmission side lock (63) comprises 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 around the spring core shaft (634) and located on the inner side of the perforated lug (636).

6. A damped current transformer for traveling wave ranging according to claim 5, 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).

7. A damped current transformer for traveling wave ranging according to claim 6, characterized in that: The upper end surface and the lower end surface of the locking outer ring (134) are respectively provided with anti-rotation locking teeth evenly distributed in the circumferential direction.

8. A damped current transformer for traveling wave ranging according to claim 7, characterized in that: The middle part of the hinged core shaft (12) is provided with an annular groove which cooperates with the swing arm ring (21).

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