A current transformer device with integrated disconnection alarm function

By designing a thermal energy conversion short-circuit alarm driving mechanism in the current mutual inductance device, the problem of timely alarm and short-circuit protection in the prior art is solved, and higher safety and equipment reliability are achieved.

CN115360003BActive Publication Date: 2025-04-01BEIJING JINSIJI TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202210984977.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-17
Publication Date
2025-04-01
Estimated Expiration
2042-08-17

AI Technical Summary

Technical Problem

The existing current mutual inductance devices cannot alarm in time and short-circuit protection when the secondary side is opened, resulting in an increase in the risk of equipment damage and casualties.

Method used

A current mutual inductance device with integrated line break alarm function is designed, and a thermal energy conversion short-connection alarm driving mechanism is adopted, including a thermal energy conversion driving component, a short-connection linkage adjustment component and an alarm linkage adjustment component, which can automatically short-connection and alarm when the secondary side is open.

Benefits of technology

Timely alarm and short-circuit protection when opening the secondary side of the current mutual inductance device is realized, safety is improved, and equipment damage and casualties are avoided.

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Abstract

The invention relates to the technical field of current mutual induction devices, and discloses a current mutual induction device with an integrated disconnection alarm function, which solves the problem that the existing current mutual induction device cannot timely alarm and perform short-circuit protection when a secondary side open circuit occurs. The current mutual induction device comprises a shell, an alarm is arranged on one side of the top of the shell, an iron core is arranged on one side of the inner shell, a primary winding and a secondary winding are arranged on the iron core, a wiring terminal 1 and a wiring terminal 2 are arranged at the bottom end of one side of the inner shell, a short-circuit conductive column 1 is arranged on the wiring terminal 1, and a short-circuit conductive column 2 is arranged on the wiring terminal 2, a built-in power supply component is arranged on the other side of the inner shell, the built-in power supply component is electrically connected to the alarm through the conductive column 1 and the conductive column 2, and a thermal energy conversion type short-circuit alarm driving mechanism is arranged on one side of the inner shell close to the built-in power supply component; through the current mutual induction device, timely alarm and short-circuit protection can be performed when a secondary side open circuit occurs, thereby protecting the safety of equipment and personnel.
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Description

Technical Field

[0001] The invention belongs to the technical field of current mutual induction devices, and in particular relates to a current mutual induction device with an integrated disconnection alarm function. Background Art

[0002] The measurement and control devices in the power system need to use current transformers when collecting data from high-voltage power transmission equipment in the power grid. Current transformers convert large currents in high-voltage power grids into safe small currents. When the secondary side of the current transformer is open-circuited for various reasons, high voltage and high heat will be induced on the secondary side, which may burn the equipment or cause electric shock to personnel.

[0003] In the prior art, a CPU processor is generally used to detect whether there is an open circuit voltage, and the CPU unit controls the thyristor module to protect the current transformer. However, the prior art method of using the CPU processor to determine whether the current transformer is open circuit is complex in structure, does not have the function of timely alarm, and cannot perform short circuit protection on the secondary side in time after the open circuit occurs, and the use effect is not good. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a current transformer device with integrated disconnection alarm function, which effectively solves the problem that the existing current transformer device cannot promptly alarm and perform short circuit protection when a secondary side open circuit occurs.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a current mutual inductance device with an integrated disconnection alarm function, comprising a shell, a mounting plate is provided at the bottom end of the shell, an alarm is provided on one side of the top end of the shell, an iron core is provided on one side inside the shell, a primary winding and a secondary winding are provided on the iron core, a wiring terminal 1 and a wiring terminal 2 connected to the secondary winding and inserted into the shell are provided at the bottom end of the shell near one side of the iron core, a short-circuit conductive column 1 is fixedly provided on the wiring terminal 1, and a short-circuit conductive column 2 is fixedly provided on the wiring terminal 2, a built-in power supply component is provided at the middle position of the other side inside the shell, the built-in power supply component is electrically connected to the alarm through the conductive column 1 and the conductive column 2, and a thermal energy conversion type short-circuit alarm drive mechanism is provided on one side of the shell near the built-in power supply component;

[0006] The thermal energy conversion short-circuit alarm drive mechanism consists of a thermal energy conversion drive component, a short-circuit linkage adjustment component, an alarm linkage adjustment component, a short-circuit line conduction component and an alarm line conduction component. The thermal energy conversion drive component is fixedly connected to the interior of the shell through a limiting support component and is located on one side of the iron core and the secondary winding. The short-circuit linkage adjustment component is located at the bottom end of the shell away from the iron core and is matched with the thermal energy conversion drive component. The alarm linkage adjustment component is located at the top end of the shell away from the iron core and is matched with the thermal energy conversion drive component. The short-circuit line conduction component is located at the bottom end of the shell and is connected between the short-circuit conductive column one, the short-circuit conductive column two and the short-circuit linkage adjustment component. The alarm line conduction component is located at the top end of the shell and is connected between the conductive column one, the conductive column two and the alarm linkage adjustment component.

[0007] Preferably, the thermal energy conversion drive assembly is composed of an inflatable hollow heat absorption cover, an auxiliary heat conduction assembly, a linear piston cylinder, a piston rod, a plurality of rubber pistons, a push-pull rod 1, a push-pull rod 2 and a plurality of limit guide wheels. The interior of the inflatable hollow heat absorption cover is filled with helium, the auxiliary heat conduction assembly is fixedly connected to the interior of the inflatable hollow heat absorption cover, the linear piston cylinder is fixedly connected to the middle position of one side of the inflatable hollow heat absorption cover, the piston rod is inserted into the interior of the linear piston cylinder, the rubber piston is located in the interior of the linear piston cylinder and fixedly connected to one end of the piston rod, the push-pull rod 1 and the push-pull rod 2 are both connected to the other end of the piston rod, and the limit guide wheels are respectively connected to one end of the push-pull rod 1 and the push-pull rod 2.

[0008] Preferably, the limit support assembly is composed of a plurality of limit support columns and a fixed sleeve, the fixed sleeve is fixedly mounted on the outside of the linear piston cylinder, and the fixed sleeve is fixedly connected to the housing through the limit support columns.

[0009] Preferably, the auxiliary heat conducting assembly is composed of a plurality of transverse heat conducting bars and a plurality of vertical heat conducting bars, which are cross-connected inside the inflatable hollow heat absorbing cover, and the inflatable hollow heat absorbing cover and the transverse heat conducting bars and the vertical heat conducting bars are all made of copper.

[0010] Preferably, a pressure gauge and a one-way inflation port inserted into the shell are provided in the middle position of the front side of the shell, the pressure gauge is fixedly connected to the inflatable hollow heat absorbing cover through air pipe one, and the one-way inflation port is fixedly connected to air pipe one through air pipe two.

[0011] Preferably, the short-circuit linkage adjustment assembly and the alarm linkage adjustment assembly are both composed of a supporting cross arm, a vertical swing arm, a movable shaft, a movable limit pressure wheel and a resistance tension spring. One end of the supporting cross arm is fixedly connected to the inner wall of the shell, the supporting cross arm is matched with the vertical swing arm through the movable shaft, the movable limit pressure wheel is connected to the bottom end of one side of the vertical swing arm, the resistance tension spring is connected between the vertical swing arm and the shell, and one end of the vertical swing arm is matched with the limit guide wheel.

[0012] Preferably, a strip-shaped limiting guide groove matching the limiting guide wheel is provided at the top end of one side of the vertical swing arm, and the width of the strip-shaped limiting guide groove is greater than the diameter of the limiting guide wheel.

[0013] Preferably, the short-circuit circuit conduction component and the alarm circuit conduction component are both composed of a limiting guide rail, a limiting slide bar, a plug-in sleeve, a conductive ring and a wear-resistant push plate. The limiting guide rail is fixedly connected to the inner wall of the shell, the limiting slide bar is inserted into the limiting guide rail, the plug-in sleeve is fixedly connected to the limiting slide bar, the conductive ring is fixedly connected to the inside of the plug-in sleeve, and the wear-resistant push plate is fixedly connected to one end of the plug-in sleeve close to the movable limiting pressure wheel.

[0014] Preferably, a magnet 1 and a buffer pad are fixedly provided at one end of the plug sleeve, the buffer pad is fixedly connected to one side of the magnet 1, and a magnet 2 matching the magnet 1 is provided at one end of the short-circuiting conductive column 2 and the conductive column 2.

[0015] Preferably, the top and bottom ends of the front face of the shell are both provided with insulating push handles fixedly connected to the short-circuited conductive column 2 and the conductive column 3, and the top and bottom ends of the front face of the shell are both provided with strip-shaped through grooves matching the insulating push handles.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) During operation, by providing a heat energy conversion drive component, an alarm linkage adjustment component and an alarm line conduction component, a timely alarm can be issued when an open circuit occurs on the secondary side of the current transformer, thereby providing a safety reminder and facilitating timely maintenance;

[0018] (2) By providing a heat energy conversion drive component, a short-circuit linkage adjustment component and a short-circuit line conduction component, the secondary side of the current transformer can be short-circuited when an open circuit occurs on the secondary side of the current transformer, thereby improving safety and avoiding equipment damage and casualties. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is a schematic diagram of the structure of a current mutual induction device with integrated disconnection alarm function according to the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of a current transformer device with integrated disconnection alarm function according to the present invention;

[0023] Figure 3 The second schematic diagram of the internal structure of the current mutual induction device with integrated disconnection alarm function of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the thermal energy conversion short circuit alarm drive mechanism of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the heat energy conversion drive component of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the auxiliary heat conduction component of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure between the short-circuit linkage adjustment component and the short-circuit line conduction component of the present invention;

[0028] Figure 8 It is a schematic diagram of the connection structure between the short-circuit circuit conducting component and the short-circuit conductive column 2 of the present invention;

[0029] In the figure: 1. Shell; 2. Mounting plate; 3. Alarm; 4. Iron core; 5. Primary winding; 6. Secondary winding; 7. Terminal block 1; 8. Terminal block 2; 9. Short-circuit conductive column 1; 10. Short-circuit conductive column 2; 11. Built-in power supply assembly; 12. Conductive column 1; 13. Conductive column 2; 14. Thermal energy conversion short-circuit alarm drive mechanism; 15. Thermal energy conversion drive assembly; 16. Short-circuit linkage adjustment assembly; 17. Alarm linkage adjustment assembly; 18. Short-circuit line conduction assembly; 19. Alarm line conduction assembly; 20. Limit support assembly; 21. Inflatable hollow heat absorbing cover; 22. Auxiliary heat conduction assembly; 23. Linear piston cylinder; 24. Piston rod; 2 5. Rubber piston; 26. Push-pull rod one; 27. Push-pull rod two; 28. Limit guide wheel; 29. ​​Limit support column; 30. Fixed sleeve; 31. Horizontal heat conduction strip; 32. Vertical heat conduction strip; 33. Pressure gauge; 34. One-way inflation port; 35. Air pipe one; 36. Air pipe two; 37. Support cross arm; 38. Vertical swing arm; 39. Movable shaft; 40. Movable limit pressure wheel; 41. Resistance tension spring; 42. Strip limit guide groove; 43. Limit guide rail; 44. Limit slide bar; 45. Plug sleeve; 46. Conductive ring; 47. Wear-resistant push plate; 48. Magnet one; 49. Buffer pad; 50. Magnet two; 51. Insulated push handle; 52. Strip through groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, by Figures 1 to 3 The present invention provides a current mutual inductance device with an integrated disconnection alarm function, comprising a housing 1, a mounting plate 2 is provided at the bottom end of the housing 1, and the device is conveniently installed and fixed, an alarm 3 is provided on one side of the top end of the housing 1, and timely alarm can be given when a secondary side open circuit occurs, an iron core 4 is provided on one side inside the housing 1, a primary winding 5 and a secondary winding 6 are provided on the iron core 4, a wiring terminal 1 7 and a wiring terminal 2 8 connected to the secondary winding 6 and inserted into the housing 1 are provided at the bottom end of the housing 1 near one side of the iron core 4, and secondary side wiring can be realized, a short-circuit conductive column 1 9 is fixedly provided on the wiring terminal 1 7, and a short-circuit conductive column 2 10 is fixedly provided on the wiring terminal 2 8, It can short-circuit when the secondary side is open-circuited, thereby improving safety. A built-in power supply component 11 is arranged in the middle position of the other side inside the housing 1. The built-in power supply component 11 is electrically connected to the alarm 3 through the conductive column 12 and the conductive column 2 13, and can alarm when the secondary side is open-circuited. A heat energy conversion short-circuit alarm driving mechanism 14 is arranged on one side of the housing 1 close to the built-in power supply component 11. The heat energy conversion short-circuit alarm driving mechanism 14 can utilize the high heat generated by the secondary side open circuit to realize the drive conduction of the entire alarm component and the short-circuit component, realize the alarm and short-circuit safety protection functions, effectively improve the safety of the device, and avoid equipment damage and casualties;

[0032] The heat energy conversion short-circuit alarm drive mechanism 14 is composed of a heat energy conversion drive component 15, a short-circuit linkage adjustment component 16, an alarm linkage adjustment component 17, a short-circuit line conduction component 18 and an alarm line conduction component 19. The heat energy conversion drive component 15 is fixedly connected to the inside of the shell 1 through a limit support component 20 and is located on one side of the iron core 4 and the secondary winding 6. The short-circuit linkage adjustment component 16 is located at the bottom end of the inside of the shell 1 away from the iron core 4 and is connected with the heat energy conversion drive component 15. The alarm linkage adjustment component 17 is located at the top of the inside of the shell 1 away from the iron core 4 and is connected with the heat energy conversion drive component 15. The short-circuit line conduction component 18 is located at the bottom end of the inside of the shell 1 and is connected between the short-circuit conductive column 1 9, the short-circuit conductive column 2 10 and the short-circuit linkage adjustment component 16. The alarm line conduction component 19 is located at the top of the inside of the shell 1 and is connected between the conductive column 1 12, the conductive column 2 13 and the alarm linkage adjustment component 17;

[0033] When the secondary side of the current mutual inductance device is open-circuited, the thermal energy conversion drive component 15 is started by heat, and synchronously drives the short-circuit linkage adjustment component 16 and the alarm linkage adjustment component 17 to work. The short-circuit linkage adjustment component 16 drives the short-circuit line conduction component 18 to connect and conduct with the short-circuit conductive column 1 9 and the short-circuit conductive column 2 10, thereby realizing the short-circuit protection function. The alarm linkage adjustment component 17 drives the alarm line conduction component 19 to connect and conduct with the conductive column 1 12 and the conductive column 2 13, thereby realizing the alarm function.

[0034] Embodiment 2, by Figures 1 to 6 It is given that the heat energy conversion drive component 15 is composed of an inflatable hollow heat absorbing cover 21, an auxiliary heat conducting component 22, a linear piston cylinder 23, a piston rod 24, a plurality of rubber pistons 25, a push-pull rod 1 26, a push-pull rod 27 and a plurality of limiting guide wheels 28. The interior of the inflatable hollow heat absorbing cover 21 is filled with helium, the auxiliary heat conducting component 22 is fixedly connected to the interior of the inflatable hollow heat absorbing cover 21, the linear piston cylinder 23 is fixedly connected to the middle position of one side of the inflatable hollow heat absorbing cover 21, the piston rod 24 is inserted into the interior of the linear piston cylinder 23, the rubber piston 25 is located in the interior of the linear piston cylinder 23 and is fixedly connected to one end of the piston rod 24, the push-pull rod 1 26 and the push-pull rod 27 are both connected to the other end of the piston rod 24, and the limiting guide wheel 28 is respectively connected to one end of the push-pull rod 1 26 and the push-pull rod 27;

[0035] When the secondary side of the current mutual inductance device is open-circuited, high voltage and high heat are generated inside the housing 1, and the inflatable hollow heat absorbing cover 21 and the auxiliary heat conducting component 22 absorb the heat energy. The helium inside the inflatable hollow heat absorbing cover 21 expands due to the heat, thereby pushing the rubber piston 25, and the rubber piston 25 drives the piston rod 24 to move. The piston rod 24 pushes the push-pull rod 1 26, the push-pull rod 27 and a plurality of limit guide wheels 28, thereby pushing the short-circuit linkage adjustment component 16 and the alarm linkage adjustment component 17;

[0036] The limit support assembly 20 is composed of a plurality of limit support columns 29 and a fixed sleeve 30. The fixed sleeve 30 is fixedly sleeved on the outside of the linear piston cylinder 23. The fixed sleeve 30 is fixedly connected to the shell 1 through the limit support column 29. The limit support column 29 and the fixed sleeve 30 can realize the overall installation and fixation of the heat energy conversion drive assembly 15 to improve its overall stability. The auxiliary heat conduction assembly 22 is composed of a plurality of transverse heat conduction strips 31 and a plurality of vertical heat conduction strips 32. The transverse heat conduction strips 31 and the vertical heat conduction strips 32 are cross-connected to the inside of the inflatable hollow heat absorption cover 21. The inflatable hollow heat absorption cover 21 and the transverse heat conduction strips 31 and the vertical heat conduction strips 32 are all The shell 1 is made of copper and can conduct heat to the inside of the inflatable hollow heat absorption cover 21 through the horizontal heat conduction strips 31 and the vertical heat conduction strips 32 to improve the heat conduction efficiency, thereby realizing rapid heating of the helium. A barometer 33 and a one-way inflation port 34 inserted into the shell 1 are provided in the middle position of the front side of the shell 1. The barometer 33 is fixedly connected to the inflatable hollow heat absorption cover 21 through an air pipe 1 35, and the one-way inflation port 34 is fixedly connected to the air pipe 1 35 through an air pipe 2 36. The air pressure inside the inflatable hollow heat absorption cover 21 can be monitored in real time through the barometer 33, and the one-way inflation port 34 can be used to replenish the air when the air pressure inside the inflatable hollow heat absorption cover 21 is insufficient.

[0037] Embodiment 3, by Figures 1 to 8 It is given that the short-circuit linkage adjustment component 16 and the alarm linkage adjustment component 17 are both composed of a supporting cross arm 37, a vertical swing arm 38, a movable shaft 39, a movable limit pressure wheel 40 and a resistance tension spring 41. One end of the supporting cross arm 37 is fixedly connected to the inner side wall of the shell 1, and the supporting cross arm 37 is matched with the vertical swing arm 38 through the movable shaft 39. The movable limit pressure wheel 40 is connected to the bottom end of one side of the vertical swing arm 38, and the resistance tension spring 41 is connected between the vertical swing arm 38 and the shell 1. One end of the vertical swing arm 38 is matched with the limit guide wheel 28. A strip limit guide groove 42 matching the limit guide wheel 28 is provided at the top of one side of the vertical swing arm 38. The width of the strip limit guide groove 42 is greater than the diameter of the limit guide wheel 28, so as to limit the limit guide wheel 28. When the internal temperature of the shell 1 returns to normal, the vertical swing arm 38 can be driven to reset through the limit guide wheel 28.

[0038] When the limiting guide wheel 28 pushes one end of the vertical swing arm 38, the center position of the vertical swing arm 38 rotates around one end of the supporting cross arm 37, so that the other end of the vertical swing arm 38 moves in the opposite direction, thereby pushing the movable limiting pressure wheel 40. The movable limiting pressure wheel 40 is used to push the short-circuit line conduction component 18 and the alarm line conduction component 19, so that the line can be connected. The vertical swing arm 38 can be pulled and limited to a certain extent by the action of the resistance tension spring 41 to avoid During normal use, the heat generated by the working time difference drives the vertical swing arm 38 to move, thereby avoiding false alarms and false short circuits, and improving the use effect. When the secondary side is open-circuited, due to the large amount of heat generated, the thrust generated by the expansion of helium is greater than the sum of the tension of the resistance tension spring 41 and the resistance of the movement of other components, which will drive the vertical swing arm 38 to swing, realizing normal alarm and short circuit work. At the same time, when the internal temperature of the shell 1 returns to normal, the vertical swing arm 38 can be driven to reset through the resistance tension spring 41;

[0039] The short-circuit circuit conducting component 18 and the alarm circuit conducting component 19 are both composed of a limit rail 43, a limit slide bar 44, a plug sleeve 45, a conductive ring 46 and a wear-resistant push plate 47. The limit rail 43 is fixedly connected to the inner wall of the housing 1, the limit slide bar 44 is inserted into the limit rail 43, the plug sleeve 45 is fixedly connected to the limit slide bar 44, the conductive ring 46 is fixedly connected to the inside of the plug sleeve 45, and the wear-resistant push plate 47 is fixedly connected to one end of the plug sleeve 45 close to the movable limit pressure wheel 40;

[0040] When the movable limit pressing wheel 40 moves with the vertical swing arm 38, the wear-resistant push plate 47 is pushed, and the plug sleeve 45 and the limit slide bar 44 are pushed to move along the limit guide rail 43 by the wear-resistant push plate 47, so that the plug sleeve 45 can be respectively engaged with the short-circuited conductive column 10 and the conductive column 13, and then the conductive ring 46 is respectively connected with the short-circuited conductive column 10 and the conductive column 13, so as to realize the conduction of the short-circuited circuit and the alarm circuit, and then realize the short-circuited protection and alarm functions;

[0041] A magnet 48 and a buffer pad 49 are fixedly arranged at one end of the plug sleeve 45, and the buffer pad 49 is fixedly connected to one side of the magnet 48. A magnet 50 matching the magnet 48 is arranged at one end of the short-circuit conductive column 10 and the conductive column 13. An insulating push handle 51 fixedly connected to the short-circuit conductive column 10 and the conductive column 13 is arranged at the top and bottom ends of the front of the shell 1. A strip-shaped through groove 52 matching the insulating push handle 51 is opened at the top and bottom ends of the front of the shell 1.

[0042] After the short-circuit circuit and the alarm circuit are turned on, since a closed loop is formed on the secondary side, the heat inside the shell 1 gradually returns to a normal value, and the helium returns to its original state at this time, and drives the vertical swing arm 38 to reset through the resistance tension spring 41, thereby driving the piston rod 24 and the rubber piston 25 to reset. Since the wear-resistant push plate 47 and the movable limit pressure wheel 40 are non-contact structures, the plug-in sleeve 45 will not reset. The magnet 1 48 and the magnet 2 50 can achieve a stable connection between the plug-in sleeve 45 and the short-circuit conductive column 2 10 and the conductive column 2 13 to avoid poor contact. After the maintenance is completed, the plug-in sleeve 45 can be reset by manually pushing the insulating push handle 51.

[0043] During operation, by providing a thermal energy conversion drive component, an alarm linkage adjustment component and an alarm line conduction component, timely alarm can be given when an open circuit occurs on the secondary side of the current transformer, thereby providing safety reminders and facilitating timely maintenance; by providing a thermal energy conversion drive component, a short-circuit linkage adjustment component and a short-circuit line conduction component, the secondary side can be short-circuited when an open circuit occurs on the secondary side of the current transformer, thereby improving safety and avoiding equipment damage and casualties.

Claims

1. A current mutual induction device with integrated disconnection alarm function, comprising a housing (1), characterized in that: The bottom end of the shell (1) is provided with a mounting plate (2), one side of the top end of the shell (1) is provided with an alarm (3), one side of the inside of the shell (1) is provided with an iron core (4), a primary winding (5) and a secondary winding (6) are provided on the iron core (4), a wiring terminal 1 (7) and a wiring terminal 2 (8) connected to the secondary winding (6) and inserted into the shell (1) are provided at the bottom end of the inside of the shell (1) near the iron core (4), a short-circuit conductive column 1 (9) is fixedly provided on the wiring terminal 1 (7), and a short-circuit conductive column 2 (10) is fixedly provided on the wiring terminal 2 (8), a built-in power supply component (11) is provided at the middle position of the other side of the inside of the shell (1), the built-in power supply component (11) is electrically connected to the alarm (3) through a conductive column 1 (12) and a conductive column 2 (13), and a heat energy conversion type short-circuit alarm drive mechanism (14) is provided on the side of the inside of the shell (1) near the built-in power supply component (11); The heat energy conversion type short circuit alarm driving mechanism (14) is composed of a heat energy conversion driving component (15), a short circuit linkage adjustment component (16), an alarm linkage adjustment component (17), a short circuit line conduction component (18) and an alarm line conduction component (19); the heat energy conversion driving component (15) is fixedly connected to the inside of the shell (1) through a limit support component (20) and is located on one side of the iron core (4) and the secondary winding (6); the short circuit linkage adjustment component (16) is located at the bottom end of the side of the shell (1) away from the iron core (4) and is connected to the heat energy conversion driving component (19). The alarm linkage adjustment component (17) is located at the top end of the shell (1) away from the iron core (4) and is connected to the heat energy conversion drive component (15); the short-circuit line conduction component (18) is located at the bottom end of the shell (1) and is connected between the short-circuit conductive column 1 (9), the short-circuit conductive column 2 (10) and the short-circuit linkage adjustment component (16); the alarm line conduction component (19) is located at the top end of the shell (1) and is connected between the conductive column 1 (12), the conductive column 2 (13) and the alarm linkage adjustment component (17).

2. A current transformer device with integrated disconnection alarm function according to claim 1, characterized in that: The heat energy conversion drive component (15) is composed of an inflatable hollow heat absorbing cover (21), an auxiliary heat conducting component (22), a linear piston cylinder (23), a piston rod (24), a plurality of rubber pistons (25), a push-pull rod 1 (26), a push-pull rod 2 (27) and a plurality of limit guide wheels (28); the interior of the inflatable hollow heat absorbing cover (21) is filled with helium; the auxiliary heat conducting component (22) is fixedly connected to the interior of the inflatable hollow heat absorbing cover (21); the linear piston cylinder ( 23) is fixedly connected to the middle position of one side of the inflatable hollow heat absorbing cover (21), the piston rod (24) is inserted into the interior of the linear piston cylinder (23), the rubber piston (25) is located inside the linear piston cylinder (23) and is fixedly connected to one end of the piston rod (24), the push-pull rod 1 (26) and the push-pull rod 2 (27) are both connected to the other end of the piston rod (24), and the limiting guide wheel (28) is respectively connected to one end of the push-pull rod 1 (26) and the push-pull rod 2 (27).

3. A current transformer device with integrated disconnection alarm function according to claim 2, characterized in that: The position limiting support assembly (20) is composed of a plurality of position limiting support columns (29) and a fixed sleeve (30); the fixed sleeve (30) is fixedly sleeved on the outside of the linear piston cylinder (23); and the fixed sleeve (30) is fixedly connected to the housing (1) via the position limiting support columns (29).

4. A current transformer device with integrated disconnection alarm function according to claim 2, characterized in that: The auxiliary heat-conducting component (22) is composed of a plurality of transverse heat-conducting strips (31) and a plurality of vertical heat-conducting strips (32), the transverse heat-conducting strips (31) and the vertical heat-conducting strips (32) are cross-connected inside the inflatable hollow heat-absorbing cover (21), and the inflatable hollow heat-absorbing cover (21) and the transverse heat-conducting strips (31) and the vertical heat-conducting strips (32) are all made of copper.

5. A current transformer device with integrated disconnection alarm function according to claim 2, characterized in that: A pressure gauge (33) and a one-way air charging port (34) inserted into the shell (1) are provided in the middle of the front side of the shell (1); the pressure gauge (33) is fixedly connected to the inflatable hollow heat absorbing cover (21) via a first air pipe (35); and the one-way air charging port (34) is fixedly connected to the first air pipe (35) via a second air pipe (36).

6. A current transformer device with integrated disconnection alarm function according to claim 2, characterized in that: The short-circuit linkage adjustment component (16) and the alarm linkage adjustment component (17) are both composed of a supporting cross arm (37), a vertical swing arm (38), a movable shaft (39), a movable limit pressure wheel (40) and a resistance tension spring (41). One end of the supporting cross arm (37) is fixedly connected to the inner wall of the shell (1), the supporting cross arm (37) and the vertical swing arm (38) are matched and connected through the movable shaft (39), the movable limit pressure wheel (40) is connected to the bottom end of one side of the vertical swing arm (38), the resistance tension spring (41) is connected between the vertical swing arm (38) and the shell (1), and one end of the vertical swing arm (38) is matched and connected to the limit guide wheel (28).

7. A current transformer device with integrated disconnection alarm function according to claim 6, characterized in that: A strip-shaped limiting guide groove (42) matching the limiting guide wheel (28) is provided at the top end of one side of the vertical swing arm (38), and the width of the strip-shaped limiting guide groove (42) is greater than the diameter of the limiting guide wheel (28).

8. A current transformer device with integrated disconnection alarm function according to claim 6, characterized in that: The short-circuit circuit conducting component (18) and the alarm circuit conducting component (19) are both composed of a limiting guide rail (43), a limiting slide bar (44), a plug sleeve (45), a conductive ring (46) and a wear-resistant push plate (47); the limiting guide rail (43) is fixedly connected to the inner side wall of the housing (1); the limiting slide bar (44) is inserted into the limiting guide rail (43); the plug sleeve (45) is fixedly connected to the limiting slide bar (44); the conductive ring (46) is fixedly connected to the inside of the plug sleeve (45); and the wear-resistant push plate (47) is fixedly connected to one end of the plug sleeve (45) close to the movable limiting pressure wheel (40).

9. A current transformer device with integrated disconnection alarm function according to claim 8, characterized in that: A magnet 1 (48) and a buffer pad (49) are fixedly arranged at one end of the plug sleeve (45), and the buffer pad (49) is fixedly connected to one side of the magnet 1 (48). A magnet 2 (50) matching the magnet 1 (48) is arranged at one end of the short-circuiting conductive column 2 (10) and the conductive column 2 (13).

10. A current transformer device with integrated disconnection alarm function according to claim 1, characterized in that: The top and bottom ends of the front face of the housing (1) are both provided with insulating push handles (51) fixedly connected to the short-circuited conductive column 2 (10) and the conductive column 2 (13), and the top and bottom ends of the front face of the housing (1) are both provided with strip-shaped through grooves (52) matching the insulating push handles (51).

Citation Information

Patent Citations

  • Novel current transformer secondary disconnection protection device

    CN216851281U

  • Secondary open circuit protective equipment of current transformer

    JP1998144540A