Three-phase integrated electronic current transformer assembly

Abstract

The present invention discloses a three-phase integrated electronic current transformer assembly, which relates to the technical field of current transformers and includes a mutual inductance assembly, an armored protection assembly, and a pumping and processing assembly. The mutual inductance assembly includes an iron core, a first winding, a second winding, and an inner support structure. The first winding and the second winding are respectively wound around both ends of the iron core. The armored protection assembly includes a lower support structure and an outer surrounding structure. The lower support structure supports the inner support structure from below, and the outer surrounding structure surrounds the iron core from the outside. The outer surrounding structure includes two oppositely positioned grooves with closed groove openings. The pumping and processing assembly includes a pump body and an oil transmission structure. The two ports of the pump body are respectively a port one and a port two. The oil transmission structure is respectively connected to the two ports of the pump body. The insulating oil conveyed by the oil transmission structure passes through and fills the grooves, so that the first winding and the second winding are immersed in the insulating oil. While providing armored protection, the three-phase integrated electronic current transformer assembly can improve the heat dissipation effect of the iron core.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and particularly to a three-phase integrated electronic transformer assembly. Background Art

[0002] A transformer is a connecting component between the primary system and the secondary system in an AC circuit. Its working principle is basically the same as that of a transformer. A transformer includes a voltage transformer and a current transformer. A three-phase integrated electronic transformer is an advanced measuring device used in a power system. It combines electronic technology and the functions of a transformer to achieve accurate measurement of three-phase current or voltage;

[0003] The existing transformers achieve the purpose of circuit induction through electromagnetic induction, and there is a problem that they cannot be adapted to armored cables. Moreover, since traditional transformers often use resin sealing, they cannot perform rapid heat dissipation work. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-phase integrated electronic transformer assembly, which provides armored protection while improving the heat dissipation effect of the iron core.

[0005] To achieve the above purpose, the present invention provides the following solution:

[0006] The present invention discloses a three-phase integrated electronic transformer assembly, including:

[0007] A mutual inductance assembly, including an iron core, a first winding, a second winding, and an inner support structure; the two ends of the iron core are respectively wound with the first winding and the second winding, and the inner support structure is located inside the iron core and fixedly connected to the iron core;

[0008] An armored protection assembly, including a lower support structure and an outer surrounding structure; the lower support structure supports the inner support structure from below, and the outer surrounding structure surrounds the iron core from the outside; the outer surrounding structure includes two oppositely positioned grooves, and the two grooves respectively accommodate one end of the iron core wound with the first winding and one end wound with the second winding, and the notch of the groove is closed;

[0009] A pumping treatment assembly, including a pump body and an oil delivery structure; the oil delivery structure is respectively connected to the two ports of the pump body to enable insulating oil to be conveyed between the two ports of the pump body; the insulating oil conveyed by the oil delivery structure passes through and fills the groove, so that one end of the iron core wound with the first winding and one end wound with the second winding are both immersed in the insulating oil.

[0010] Preferably, a detection device is installed on the wire connected to the first winding, so that the detection device is connected in parallel with the first winding.

[0011] Preferably, the inner support structure includes a limit seat and a protective cushion block; the limit seat is located inside the iron core and fixedly connected to the iron core, the upper end of the limit seat is fixedly connected to the protective cushion block, and the upper end of the protective cushion block is higher than the upper ends of the first winding and the second winding.

[0012] Preferably, the lower support structure includes a fixed chassis, a limit support platform, and an insulating protection disc; the upper end of the fixed chassis is fixedly connected to the limit support platform, the upper end of the limit support platform is fixedly connected to the insulating protection disc, and the insulating protection disc supports the inner support structure from below.

[0013] Preferably, the outer surrounding structure further includes two oppositely positioned protective fixing blocks, and the protective fixing blocks are located between the two slots.

[0014] Preferably, the lower support structure further includes a connecting shaft rod, the lower end of the connecting shaft rod is fixedly connected to the fixed chassis, and the upper end of the connecting shaft rod is fixedly connected to the protective fixing block.

[0015] Preferably, the oil delivery structure includes an oil delivery seat one, an oil delivery seat two, a drainage conduit one, a drainage conduit two, an extension conduit, a communicating built-in pipe, a docking communicating seat one, a connecting pipe, and a docking communicating seat two;

[0016] In the direction from one port of the pump body to the slot accommodating the first winding, the oil delivery seat one, the drainage conduit one, the extension conduit, and the communicating built-in pipe are sequentially connected;

[0017] In the direction from one port of the pump body to the slot accommodating the second winding, the oil delivery seat two, the drainage conduit two, the extension conduit, and the communicating built-in pipe are sequentially connected;

[0018] In the direction from the slot accommodating the first winding to the other port of the pump body, the docking communicating seat one, the connecting pipe, and the docking communicating seat two are sequentially connected;

[0019] In the direction from the slot accommodating the second winding to the other port of the pump body, the docking communicating seat one, the connecting pipe, and the docking communicating seat two are sequentially connected.

[0020] Preferably, each of the slots corresponds to a plurality of the communicating built-in pipes.

[0021] Preferably, each of the slots corresponds to a connecting pipe and a docking communicating seat two.

[0022] Preferably, both the docking communicating seat one and the docking communicating seat two are square.

[0023] The present invention has achieved the following technical effects compared with the related art:

[0024] The inner support structure protects the iron core, winding one, and winding two from the inner side, the lower support structure protects the iron core, winding one, and winding two from the lower side, and the outer surrounding structure protects the iron core, winding one, and winding two from the outer side, thereby surrounding the iron core, winding one, and winding two to provide structural protection.

[0025] A closed cavity is formed in the groove body of the outer surrounding structure to immerse a part of the iron core in insulating oil, thereby improving the heat dissipation effect of the iron core.

[0026] The pumping treatment component is used to circulate the insulating oil, so that the heated insulating oil in the groove body flows out of the groove body, and the cooled insulating oil outside the groove body flows into the groove body, thereby maintaining the temperature difference between the insulating oil in the groove body and the iron core and improving the heat dissipation effect of the iron core. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is a schematic diagram of a perspective of the three-phase integrated electronic current transformer assembly according to an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of another perspective of the three-phase integrated electronic current transformer assembly according to an embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the mutual inductance component;

[0031] Figure 4 It is a schematic diagram of the enclosure structure;

[0032] Figure 5 It is a schematic diagram of the armored protection component and part of the pumping treatment component;

[0033] Figure 6 It is a schematic diagram of part of the pumping treatment component.

[0034] In the figure: 1 - mutual inductance component; 2 - enclosure structure; 3 - protective cushion block; 4 - limit seat; 5 - winding one; 6 - iron core; 7 - winding two; 8 - armored protection component; 9 - pumping and processing component; 10 - docking and connecting seat one; 11 - tank body; 12 - connecting and built-in pipe; 13 - protective fixing block; 14 - fixed chassis; 15 - connecting shaft rod; 16 - limit support platform; 17 - insulating protection disc; 18 - extension conduit; 19 - drainage conduit one; 20 - oil transmission seat one; 21 - pump body; 22 - docking and connecting seat two; 23 - oil transmission seat two; 24 - drainage conduit two. Detailed implementation manner

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] The purpose of the present invention is to provide a three-phase integrated electronic current transformer component, which improves the heat dissipation effect of the iron core while providing armored protection.

[0037] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0038] Referring to Figures 1 to 6 , this embodiment provides a three-phase integrated electronic current transformer component, including a mutual inductance component 1, an armored protection component 8, and a pumping and processing component 9. The armored protection component 8 and the pumping and processing component 9 form an enclosure structure 2, which encloses the mutual inductance component 1.

[0039] The mutual inductance component 1 includes an iron core 6, a winding one 5, a winding two 7, and an inner support structure. The two ends of the iron core 6 are respectively wound with the winding one 5 and the winding two 7, and the inner support structure is located inside the iron core 6 and fixedly connected to the iron core 6.

[0040] The armored protection component 8 includes a lower support structure and an outer surrounding structure. The lower support structure supports the inner support structure from below, and the outer surrounding structure surrounds the iron core 6 from the outside. The outer surrounding structure includes two tank bodies 11 facing each other, and one end of the iron core 6 wound with the winding one 5 and one end wound with the winding two 7 are respectively accommodated in the two tank bodies 11, and the openings of the tank bodies 11 are closed.

[0041] The pumping and processing assembly 9 includes a pump body 21 and an oil delivery structure. The two ports of the pump body 21 are respectively a port one and a port two. The oil delivery structure is respectively connected to the two ports of the pump body 21 to enable the insulating oil to be conveyed between the two ports of the pump body 21. The insulating oil conveyed by the oil delivery structure passes through and fills the tank body 11, so that one end of the iron core 6 wound with the first winding 5 and one end of the iron core 6 wound with the second winding 7 are both immersed in the insulating oil. When the blades of the pump body 21 rotate forward, the port one discharges oil and the port two intakes oil. When the blades of the pump body 21 rotate in reverse, the port one intakes oil and the port two discharges oil.

[0042] The working principle of the three-phase integrated electronic current transformer assembly in this embodiment is as follows:

[0043] The inner support structure protects the iron core 6, the first winding 5 and the second winding 7 from the inside, the lower support structure protects the iron core 6, the first winding 5 and the second winding 7 from the lower side, and the outer surrounding structure protects the iron core 6, the first winding 5 and the second winding 7 from the outside, thereby surrounding the iron core 6, the first winding 5 and the second winding 7 to provide structural protection.

[0044] A closed cavity is formed in the tank body 11 of the outer surrounding structure to immerse a part of the iron core 6 in the insulating oil, thereby improving the heat dissipation effect of the iron core 6.

[0045] The pumping and processing assembly 9 is used to make the insulating oil circulate, so that the heated insulating oil in the tank body 11 flows out of the tank body 11, and the cooled insulating oil outside the tank body 11 flows into the tank body 11, thereby maintaining the temperature difference between the insulating oil in the tank body 11 and the iron core 6 and improving the heat dissipation effect of the iron core 6.

[0046] As a possible example, in this embodiment, a detection device is installed on the wire connected to the first winding 5 so that the detection device is connected in parallel with the first winding 5.

[0047] The detection device can be used for voltage measurement and subsequent calculations to monitor the working state of the mutual inductance assembly 1.

[0048] As a possible example, in this embodiment, the inner support structure includes a limit seat 4 and a protection cushion block 3. The limit seat 4 is located inside the iron core 6 and is fixedly connected to the iron core 6. The upper end of the limit seat 4 is fixedly connected to the protection cushion block 3, and the upper end of the protection cushion block 3 is higher than the upper ends of the first winding 5 and the second winding 7.

[0049] Since the height of the protection cushion block 3 is higher than that of the first winding 5 and the second winding 7, when facing an impact from the upper side, the protection cushion block 3 first contacts the upper impact object and protects the iron core 6, the first winding 5 and the second winding 7 from the upper side.

[0050] As a possible example, in this embodiment, the lower support structure includes a fixed chassis 14, a limit support platform 16, and an insulating protection disk 17. The upper end of the fixed chassis 14 is fixedly connected to the limit support platform 16, and the upper end of the limit support platform 16 is fixedly connected to the insulating protection disk 17. The insulating protection disk 17 supports the inner support structure from the lower side.

[0051] As a possible example, in this embodiment, the outer surrounding structure further includes two protection fixing blocks 13 that are opposite to each other in position, and the protection fixing blocks 13 are located between the two slots 11.

[0052] The two slots 11 and the two protection fixing blocks 13 enclose a square, so that side impacts in all directions can be protected, avoiding deformation or damage of the iron core 6, the first winding 5, and the second winding 7 under side impacts.

[0053] As a possible example, in this embodiment, the lower support structure further includes a connecting shaft rod 15. The lower end of the connecting shaft rod 15 is fixedly connected to the fixed chassis 14, and the upper end of the connecting shaft rod 15 is fixedly connected to the protection fixing block 13.

[0054] In this embodiment, the protection fixing block 13 and the fixed chassis 14 are not directly connected, but the connecting shaft rod 15 is used as an intermediate structure. Although the overall volume is increased, at the same time, the fixed chassis 14 and the limit seat 4 are separated by a certain distance, providing an installation space for the limit support platform 16 and the insulating protection disk 17.

[0055] As a possible example, in this embodiment, the oil transmission structure includes an oil transmission seat one 20, an oil transmission seat two 23, an oil drainage conduit one 19, an oil drainage conduit two 24, an extension conduit 18, a communicating internal pipe 12, a docking communicating seat one 10, a connecting pipe, and a docking communicating seat two 22.

[0056] In the direction from one port (i.e., port one) of the pump body 21 to the slot 11 accommodating the first winding 5, the oil transmission seat one 20, the oil drainage conduit one 19, the extension conduit 18, and the communicating internal pipe 12 are connected in sequence.

[0057] In the direction from one port (i.e., port one) of the pump body 21 to the slot 11 accommodating the second winding 7, the oil transmission seat two 23, the oil drainage conduit two 24, the extension conduit 18, and the communicating internal pipe 12 are connected in sequence.

[0058] In the direction from the slot 11 accommodating the first winding 5 to the other port (i.e., port two) of the pump body 21, the docking communicating seat one 10, the connecting pipe, and the docking communicating seat two 22 are connected in sequence.

[0059] In the direction from the slot 11 accommodating the second winding 7 to the other port (i.e., port two) of the pump body 21, the docking communicating seat one 10, the connecting pipe, and the docking communicating seat two 22 are connected in sequence.

[0060] In this embodiment, the connection between two adjacent components means that they are fixedly connected and internally connected. The fixed connection enables the oil transportation structure to form a frame structure while transporting oil, thereby protecting the inner components.

[0061] As a possible example, in this embodiment, each tank 11 corresponds to a plurality of connected built-in pipes 12. Specifically, the upper ends of the first drainage pipe 19 and the second drainage pipe 24 are both connected to the first interface of a tee pipe. The second interface and the third interface of the tee pipe are each connected to an extension pipe 18, and each extension pipe 18 is connected to a connected built-in pipe 12.

[0062] That is, in this embodiment, the number of connected built-in pipes 12 and extension pipes 18 is four each.

[0063] It can be understood that those skilled in the art can also choose other numbers of connected built-in pipes 12 and extension pipes 18. In this case, the tee pipe should be replaced with an ordinary straight pipe or elbow pipe with two ends, or a four-way pipe, a five-way pipe, etc.

[0064] As a possible example, in this embodiment, each tank 11 corresponds to a connecting pipe and a second docking and connecting seat 22.

[0065] That is, taking the upper-end oil output of the tank 11 as an example, the insulating oil of the two tanks 11 does not first gather on a main path and then flow to the pump body 21, but flows to the pump body 21 through their respective branches (both branches are composed of a connecting pipe and a second docking and connecting seat 22).

[0066] As a possible example, in this embodiment, the first docking and connecting seat 10 and the second docking and connecting seat 22 are both square. Those skilled in the art can also choose other shapes such as circular for the first docking and connecting seat 10 and the second docking and connecting seat 22.

[0067] Taking the case of oil output from port one as an example, the flow path of the insulating oil in this embodiment is as follows:

[0068] The insulating oil circulates in two branches, and each branch has a tank 11.

[0069] For the branch where the tank 11 accommodating the first winding 5 is located: The insulating oil flows out from port one of the pump body 21, successively passes through the first oil transportation seat 20, the first drainage pipe 19, the extension pipe 18, and the connected built-in pipe 12, reaches the inside of the tank 11, absorbs the heat of the iron core 6 and heats up in the tank 11, and then returns to port two of the pump body 21 through the first docking and connecting seat 10, the connecting pipe, and the second docking and connecting seat 22.

[0070] For the branch where the slot 11 accommodating the winding two 7 is located: The insulating oil flows out from the port one of the pump body 21, successively passes through the oil delivery seat two 23, the oil drainage conduit two 24, the extension conduit 18, and communicates with the built-in pipe 12, reaches the inside of the slot 11, absorbs the heat of the iron core 6 and heats up inside the slot 11, and then returns to the port two of the pump body 21 through the docking connection seat one 10, the connecting pipe, and the docking connection seat two 22.

[0071] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A three-phase integrated electronic transformer assembly, characterized in that: include: A mutual inductance component, comprising an iron core, a winding 1, a winding 2 and an inner support structure; the two ends of the iron core are respectively wound with the winding 1 and the winding 2, and the inner support structure is located inside the iron core and fixedly connected to the iron core; The armor protection assembly comprises a lower support structure and an outer surrounding structure; the lower support structure supports the inner support structure from the lower side, and the outer surrounding structure surrounds the iron core from the outer side; the outer surrounding structure comprises two slots facing each other, and the two slots respectively accommodate one end of the iron core wound with the winding one and one end wound with the winding two, and the slot openings of the slots are closed; A pumping processing assembly, comprising a pump body and an oil delivery structure; the oil delivery structure is respectively connected to two ports of the pump body so that insulating oil is delivered between the two ports of the pump body; the insulating oil delivered by the oil delivery structure passes through and fills the tank body so that one end of the iron core wound with the winding one and one end of the iron core wound with the winding two are both immersed in the insulating oil; The lower support structure includes a fixed chassis, a limit support platform and an insulating protection plate; the upper end of the fixed chassis is fixedly connected to the limit support platform, the upper end of the limit support platform is fixedly connected to the insulating protection plate, and the insulating protection plate supports the inner support structure from the lower side; The outer surrounding structure further comprises two protective fixing blocks which are located opposite to each other, and the protective fixing blocks are located between the two slots; The lower supporting structure further comprises a connecting shaft, the lower end of which is fixedly connected to the fixed chassis, and the upper end of which is fixedly connected to the protective fixing block.

2. The three-phase integrated electronic transformer assembly according to claim 1, characterized in that: A detection device is installed on the wire connected to the winding one, so that the detection device is connected in parallel with the winding one.

3. The three-phase integrated electronic transformer assembly according to claim 1, characterized in that: The inner supporting structure includes a limit seat and a protective pad; the limit seat is located on the inner side of the iron core and is fixedly connected to the iron core, the upper end of the limit seat is fixedly connected to the protective pad, and the upper end of the protective pad is higher than the upper ends of the winding one and the winding two.

4. The three-phase integrated electronic transformer assembly according to claim 1, characterized in that: The oil delivery structure comprises an oil delivery seat 1, an oil delivery seat 2, a drainage conduit 1, a drainage conduit 2, an extension conduit, a connecting built-in pipe, a docking connecting seat 1, a connecting pipe and a docking connecting seat 2; From a port of the pump body to the tank body accommodating the winding 1, the oil delivery seat 1, the drainage conduit 1, the extension conduit, and the communication built-in pipe are connected in sequence; From one port of the pump body to the direction of the tank body accommodating the second winding, the second oil delivery seat, the second drainage conduit, the extension conduit, and the communication built-in pipe are connected in sequence; From the slot body accommodating the winding 1 to the other port of the pump body, the butt-joint connection seat 1, the connecting pipe, and the butt-joint connection seat 2 are connected in sequence; From the slot body accommodating the second winding to the other port of the pump body, the first docking and connecting seat, the connecting pipe, and the second docking and connecting seat are connected in sequence.

5. The three-phase integrated electronic transformer assembly according to claim 4, characterized in that: Each of the trough bodies corresponds to a plurality of the communicating built-in pipes.

6. The three-phase integrated electronic transformer assembly according to claim 4, characterized in that: Each of the trough bodies corresponds to one of the connecting pipes and one of the docking and connecting seats 2.

7. The three-phase integrated electronic transformer assembly according to claim 4, characterized in that: The first butt-joint connecting seat and the second butt-joint connecting seat are both square.

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