Current transformer installation device, measuring device and transformer system

Abstract

The present invention relates to an installation device, a measuring device and a transformer system for a current transformer. An installation device for a current transformer comprises: an insulating cylinder, the current transformer is sleeved on the outer wall of the insulating cylinder; and an insulating member, comprising a first insulating plate and a second insulating plate, each of the first insulating plate and the second insulating plate comprising: an insulating plate opening, wherein each of the first insulating plate and the second insulating plate is sleeved on the outer wall of the insulating cylinder through the respective insulating plate openings; an insulating plate inner surface facing the current transformer; an insulating plate outer surface facing away from the current transformer; and a groove, comprising at least a first annular groove and a second annular groove arranged on the inner surface of the insulating plate and concentric with the insulating plate opening, each of the first annular groove and the second annular groove is respectively provided with a corresponding metal ring. By providing the insulating cylinder and the metal ring, the current transformer can be prevented from being broken down by a strong electromagnetic field, making the maintenance of the transformer safer.

Description

Technical Field

[0001] The present invention relates to the field of transformers, and more particularly to an installation device for a current transformer, a measuring device for a transformer, and a transformer system. Background Art

[0002] In the application field of transformers, plug-in cable terminals are usually used to make on-site user operations safe and convenient. When replacing the bushing of the transformer, the user only needs to unplug the bushing from the cable terminal for simple replacement. Plug-in cable terminals bring great convenience to users.

[0003] However, a current transformer (CT) cannot be placed at the tail of such a pluggable cable terminal structure, so the user cannot use the current transformer placed at the tail of the pluggable cable terminal to monitor the temperature of the transformer winding and measure the electricity.

[0004] As an effective solution, a current transformer can be placed on the lead connecting the pluggable cable terminal and the transformer to perform the above measurement. However, when the voltage of the transformer is relatively high, for example, 66KV, 72.5KV or 220KV or higher, the conventional current transformer is broken down due to the strong electromagnetic field on the lead, and thus cannot work properly. Summary of the invention

[0005] In view of the status and shortcomings of the prior art, the object of the present invention is to provide an installation device for a current transformer, a measuring device for a transformer and a transformer system, so as to realize that when a high voltage plug-in cable terminal is used, the winding temperature can be monitored and the power consumption can be measured through the current transformer, so that the on-site installation operation of the transformer is more convenient and the maintenance is safer.

[0006] According to one aspect of the present invention, there is provided a mounting device for a current transformer, comprising: an insulating cylinder, the current transformer is sleeved on the outer wall of the insulating cylinder; and an insulating member, comprising a first insulating plate and a second insulating plate, the first insulating plate and the second insulating plate are opposite to each other and sandwich the current transformer, each of the first insulating plate and the second insulating plate comprises: an insulating plate opening, wherein each of the first insulating plate and the second insulating plate is sleeved on the outer wall of the insulating cylinder through its respective insulating plate opening; an insulating plate inner surface facing the current transformer; an insulating plate outer surface facing away from the current transformer, wherein the insulating cylinder does not extend beyond the insulating plate outer surface in the longitudinal direction; and a groove, comprising at least a first annular groove and a second annular groove arranged on the inner surface of the insulating plate and concentric with the insulating plate opening, each of the first annular groove and the second annular groove being respectively provided with a corresponding metal ring, wherein the inner diameter of the first annular groove is the same as the inner diameter of the current transformer, and the outer diameter of the second annular groove is the same as the outer diameter of the current transformer.

[0007] By sleeved the current transformer on the outer wall of the insulating cylinder and arranging metal rings on the upper and lower surfaces of the current transformer, the sharp corners on the current transformer can be effectively shielded to prevent the current transformer from being broken down by a strong electromagnetic field, so that the current transformer can still work normally under high voltage to monitor the transformer winding temperature and measure the power consumption, making the on-site installation operation of the transformer more convenient and the maintenance safer.

[0008] According to the installation device of the current transformer of the present invention, the installation device of the current transformer also includes: a first angle ring, which is arranged on the outer surface of the insulating plate of the first insulating plate, and the first angle ring includes: a first planar portion, which contacts the outer surface of the insulating plate of the first insulating plate; a first angle ring opening, whose edge is aligned with the inner wall of the insulating cylinder; and a first cylindrical portion, which extends from the first angle ring opening into the insulating cylinder along the inner wall of the insulating cylinder, and a second angle ring, which is arranged on the outer surface of the insulating plate of the second insulating plate opposite to the first angle ring, and the second angle ring includes: a second planar portion, which contacts the outer surface of the insulating plate of the second insulating plate; a second angle ring opening, whose edge is aligned with the inner wall of the insulating cylinder; and a second cylindrical portion, which extends from the second angle ring opening into the insulating cylinder along the inner wall of the insulating cylinder.

[0009] By arranging two angle rings at both ends of the current transformer, the electromagnetic field to which the current transformer is subjected can be made more uniform, thereby further preventing the current transformer from being broken down under high voltage.

[0010] According to the installation device of the current transformer of the present invention, the installation device of the current transformer also includes: a first fixing plate, which is arranged on the first angle ring and has a first opening for the lead detected by the current transformer to pass through; a second fixing plate, which is arranged on the second angle ring and has a second opening for the lead to pass through; and fasteners, which fasten the first fixing plate, the first angle ring, the first insulating plate, the current transformer, the second insulating plate, the second angle ring and the second fixing plate into one body in sequence.

[0011] Through the two fixing plates and the fasteners, the various components of the installation device and the current transformer can be formed into a whole, thereby improving the compactness of the device structure.

[0012] According to the installation device of the current transformer of the present invention, there are three current transformers, and the insulating tube is a paper tube.

[0013] The number of current transformers can be set as required. The insulating tube is a paper tube, which can save the cost of the device.

[0014] According to another aspect of the present invention, there is provided a measuring device for a transformer, comprising: a current transformer, the current transformer being an annular columnar structure; an insulating cylinder, the annular columnar structure being sleeved on the outer wall of the insulating cylinder; and an insulating member, comprising a first insulating plate and a second insulating plate, the first insulating plate and the second insulating plate being opposite to each other and sandwiching the annular columnar structure in between, each of the first insulating plate and the second insulating plate comprising: an insulating plate opening, wherein each of the first insulating plate and the second insulating plate is sleeved on the outer wall of the insulating cylinder through its respective insulating plate opening; an insulating plate inner surface facing the annular columnar structure; an insulating plate outer surface facing away from the annular columnar structure, wherein the insulating cylinder does not extend beyond the insulating plate outer surface in the longitudinal direction; and a groove, comprising at least a first annular groove and a second annular groove which are arranged on the inner surface of the insulating plate and are concentric with the insulating plate opening, each of the first annular groove and the second annular groove being respectively provided with a corresponding metal ring, wherein the inner diameter of the first annular groove is the same as the inner diameter of the annular columnar structure, and the outer diameter of the second annular groove is the same as the outer diameter of the annular columnar structure.

[0015] By sleeved the current transformer on the outer wall of the insulating cylinder and providing metal rings on the upper and lower surfaces of the current transformer, the sharp corners on the current transformer can be effectively shielded to prevent the current transformer from being broken down by a strong electromagnetic field, so that the measuring device can still work normally under high voltage to monitor the transformer winding temperature and measure the power consumption, making the on-site installation operation of the transformer more convenient and the maintenance safer.

[0016] According to the measuring device for transformers of the present invention, the measuring device for transformers also includes: a first angle ring, which is arranged on the outer surface of the insulating plate of the first insulating plate, and the first angle ring includes: a first planar portion, which contacts the outer surface of the insulating plate of the first insulating plate; a first angle ring opening, the edge of which is aligned with the inner wall of the insulating cylinder; and a first cylindrical portion, which extends from the first angle ring opening into the insulating cylinder along the inner wall of the insulating cylinder, and a second angle ring, which is arranged on the outer surface of the insulating plate of the second insulating plate opposite to the first angle ring, and the second angle ring includes: a second planar portion, which contacts the outer surface of the insulating plate of the second insulating plate; a second angle ring opening, the edge of which is aligned with the inner wall of the insulating cylinder; and a second cylindrical portion, which extends from the second angle ring opening into the insulating cylinder along the inner wall of the insulating cylinder.

[0017] By arranging two angle rings at both ends of the current transformer, the electromagnetic field experienced by the measuring device can be made more uniform, further preventing the measuring device from being broken down under high voltage.

[0018] According to the measuring device for a transformer of the present invention, the measuring device for a transformer also includes: a first fixing plate, which is arranged on a first angle ring and has a first opening for a lead detected by a current transformer to pass through; a second fixing plate, which is arranged on a second angle ring and has a second opening for a lead to pass through; and fasteners, which fasten the first fixing plate, the first angle ring, the first insulating plate, the current transformer, the second insulating plate, the second angle ring and the second fixing plate into one body in sequence.

[0019] Through the two fixing plates and the fasteners, the various components of the measuring device can be formed into a whole, thereby improving the compactness of the device structure.

[0020] According to the measuring device for transformer of the present invention, there are three current transformers and the insulating tube is a paper tube.

[0021] The number of current transformers can be set as required. The insulating tube is a paper tube, which can save the cost of the device.

[0022] According to another aspect of the present invention, a transformer system is provided, comprising: a transformer configured to provide voltage; a cable terminal pluggably connected to the transformer via a lead, the cable terminal being configured to receive voltage from the transformer via the lead and provide the received voltage to an electrical device; and a measuring device for a transformer according to the above, which is sleeved on the lead between the cable terminal and the transformer.

[0023] According to the transformer system of the present invention, the measuring device can still monitor the transformer winding temperature and measure the power consumption under high voltage, making the on-site installation and operation of the transformer more convenient and the maintenance safer.

[0024] According to the transformer system of the present invention, the cable terminal comprises: a bushing, one end of which comprises a male socket; a female socket, one end of which is connected to a lead wire, wherein the cable terminal is pluggably connected to the transformer through the lead wire by inserting the male socket into the female socket.

[0025] The plug-in connection between the male socket and the female socket makes the on-site operation of the transformer more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 A schematic diagram showing the connection relationship between a current transformer and a pluggable cable terminal in a transformer system with a pluggable cable terminal is shown.

[0028] Figure 2A schematic diagram of an installation device for a current transformer according to an embodiment of the present invention is shown.

[0029] Figure 3 A schematic diagram showing a first insulating plate and grooves on its inner surface is shown.

[0030] Figure 4 A schematic diagram of a first corner ring is shown.

[0031] Figure 5 A cross-sectional view of a current transformer including a mounting device assembled by the mounting device of the current transformer according to an embodiment of the present invention is shown.

[0032] Figure 6 A schematic diagram of a measuring device for a transformer according to another embodiment of the present invention is shown.

[0033] Figure 7 A schematic diagram of a transformer system according to another embodiment of the present invention is shown.

[0034] The reference numerals are as follows:

[0035] 100: Transformer system

[0036] 101: Plug-in cable terminals

[0037] 1011: Casing

[0038] 1012: Public seat

[0039] 1013: Mother seat

[0040] 103: Lead

[0041] 105: Current transformer

[0042] 107: Elevated seat

[0043] 200: Installation

[0044] 201: Insulation tube

[0045] 203: Insulation

[0046] 2031: First insulation board

[0047] 2032: Second insulation board

[0048] O: Opening of insulation board

[0049] 2031-1: First annular groove

[0050] 2031-2: Second annular groove

[0051] 301: First corner ring

[0052] 302: Second corner ring

[0053] 3011: First plane part

[0054] 3012: First corner ring opening

[0055] 3013: First cylindrical part

[0056] 3021: Second plane part

[0057] 3022: Second corner ring opening

[0058] 3023: Second cylindrical part

[0059] 502: First fixed plate

[0060] 503: Second fixing plate

[0061] 504: Fasteners

[0062] C1, C2: Metal ring

[0063] 600: Measuring device

[0064] 700: Transformer system. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0066] To facilitate understanding of the present invention, the connection relationship between the current transformer and the pluggable cable terminal in the transformer system with the pluggable cable terminal is first described below. Figure 1 A schematic diagram showing the connection relationship between a current transformer and a pluggable cable terminal in a transformer system with a pluggable cable terminal is shown.

[0067] like Figure 1 As shown, the transformer system 100 with pluggable cable terminals includes a transformer (for simplicity, Figure 1 ), pluggable cable terminal 101, lead wire 103, current transformer 105 and riser 107.

[0068] One end of the lead wire 103 is connected to the pluggable cable terminal 101, and the other end is connected to the Figure 1 A transformer (not shown) is used to provide the voltage of the transformer to the plug-in cable terminal 101.

[0069] The pluggable cable terminal 101 includes a sleeve 1011 and a female socket 1013. One end of the sleeve 1011 is provided with a male socket 1012, and the other end is used to provide voltage to the electrical equipment. The male socket 1012 of the sleeve 1011 is connected or disconnected with the transformer by being inserted into or pulled out of the female socket 1013.

[0070] The current transformer 105 is mounted on the lead wire 103 between the pluggable cable terminal 101 and the transformer to monitor the winding temperature, power consumption, etc. of the transformer.

[0071] The raised seat 107 is used to fix the pluggable cable terminal 101 and the lead wire 103 .

[0072] According to one embodiment of the present invention, a mounting device for a current transformer is provided. Figure 2 A schematic diagram showing a mounting device for a current transformer according to an embodiment of the present invention is shown; Figure 3 A schematic diagram showing a first insulating plate and a groove on its inner surface; Figure 4 A schematic diagram of a first corner ring is shown; Figure 5 The cross-sectional view of the current transformer including the installation device assembled by the installation device of the current transformer according to the embodiment of the present invention is shown. The direction of the cross-sectional view is along Figure 1 The leads shown are passed through the current transformer in the direction shown below. Figures 2 to 5 The installation device of the current transformer according to the present invention is described in detail. For the convenience of description, the same components are represented by the same reference numerals in the drawings.

[0073] like Figure 2 As shown, the installation device 200 of the current transformer according to the present invention includes an insulating cylinder 201 and an insulating member 203 .

[0074] Specifically, the current transformer 105 is an annular columnar structure, which can be sleeved on the outer wall of the insulating tube 201. The insulating tube 201 can be a paper tube, but the present invention is not limited thereto, and the insulating tube 201 can also be other high temperature resistant insulating materials, such as high melting point aromatic polyamide (nomex).

[0075] The insulating member 203 includes a first insulating plate 2031 and a second insulating plate 2032 which are opposite to each other and sandwich the current transformer 105 therebetween. Since the first insulating plate 2031 and the second insulating plate 2032 have the same structure, for simplicity, the structure of the first insulating plate 2031 is specifically described below.

[0076] Figure 3 FIG. 2 shows a schematic diagram of the first insulating plate 2031 and the grooves on its inner surface. Figure 3As shown, the first insulating plate 2031 may include an insulating plate opening O and an annular groove. Figure 3 The first annular groove 2031-1 and the second annular groove 2031-2 are schematically shown in the figure, but the number of the annular grooves is not limited thereto and can be set to more or less as needed. For example, the number of the annular grooves can be 1 or 3, 4, 5, ..., n.

[0077] Each of the first insulating plate 2031 and the second insulating plate 2032 can be sleeved on the outer wall of the insulating cylinder 201 through the respective insulating plate opening O.

[0078] A first annular groove 2031-1 and a second annular groove 2031-2 are provided concentrically with the insulating plate opening O on the inner surface of the first insulating plate 2031 facing the current transformer 105. The first annular groove 2031-1 is provided along the insulating plate opening O, and the second annular groove 2031-2 is provided outside the first annular groove 2031-1 and around the first annular groove 2031-1. The inner diameter of the first annular groove 2031-1 is the same as the inner diameter of the current transformer 105, and the outer diameter of the second annular groove 2031-2 is the same as the outer diameter of the current transformer 105.

[0079] like Figure 5 As shown, corresponding metal rings C1 and C2 are respectively disposed in the first annular groove 2031-1 and the second annular groove 2031-2. The metal rings may include copper rings, aluminum rings, etc., but the present invention is not limited thereto, and any metal with good conductivity may be used as the metal rings in the present invention.

[0080] like Figure 2 As shown, when the first insulating plate 2031 and the second insulating plate 2032 are sleeved on the outer wall of the insulating tube 201 , the insulating tube 201 extends in the longitudinal direction no more than the outer surface of the first insulating plate 2031 and the second insulating plate 2032 facing away from the current transformer 105 .

[0081] Alternatively, if Figure 5 As shown, the installation device of the current transformer according to the present invention may further include a first angle ring 301 and a second angle ring 302 .

[0082] The first angle ring 301 can be arranged on the outer surface of the first insulating plate 2031 facing away from the current transformer 105, and the second angle ring 302 can be arranged on the outer surface of the second insulating plate 2032 facing away from the current transformer 105. Since the first angle ring 301 and the second angle ring 302 have the same structure, for simplicity, the structure of the first angle ring 301 is specifically described below by taking the first angle ring 301 as an example.

[0083] Figure 4 Schematic diagram of the first corner ring is shown. Figure 4As shown, the first angle ring 301 includes a first planar portion 3011 , a first angle ring opening 3012 and a first cylindrical portion 3013 .

[0084] like Figure 5 As shown in the figure, the first planar portion 3011 contacts the outer surface of the first insulating plate 2031, the edge of the first angle ring opening 3012 is aligned with the inner wall of the insulating cylinder 201, and the first cylindrical portion 3013 extends from the first angle ring opening 3012 along the inner wall of the insulating cylinder 201 into the insulating cylinder 201.

[0085] The second angle ring 302 has the same structure as the first angle ring 301. Specifically, the second angle ring 302 includes a second planar portion 3021, a second angle ring opening 3022 and a second cylindrical portion 3023.

[0086] like Figure 5 As shown in the figure, the second planar portion 3021 contacts the outer surface of the second insulating plate 2032, the edge of the second angle ring opening 3022 is aligned with the inner wall of the insulating cylinder 201, and the second cylindrical portion 3023 extends from the second angle ring opening 3022 along the inner wall of the insulating cylinder 201 into the insulating cylinder 201.

[0087] Alternatively, if Figure 5 As shown, the installation device of the current transformer according to the present invention may further include a first fixing plate 502 , a second fixing plate 503 and a fastener 504 .

[0088] The first fixing plate 502 is disposed on the first angle ring 301 and has a first opening ( Figure 5 (not shown), the first opening may be disposed at the center of the first fixing plate 502 or at any other position.

[0089] The first fixing plate 502 may be made of cardboard, but the present invention is not limited thereto and any other suitable material may be used as required.

[0090] The second fixing plate 503 is disposed on the second angle ring 302 and has a second opening ( Figure 5 (not shown), the second opening may be provided at the center of the second fixing plate 503 or at any other position.

[0091] The second fixing plate 503 may be made of cardboard, but the present invention is not limited thereto and any other suitable material may be used as required.

[0092] The lead wires are connected to the pluggable cable terminal and the transformer respectively through the first opening and the second opening.

[0093] The fastener 504 can fasten the first fixing plate 502, the first angle ring 301, the first insulating plate 2031, the current transformer 105, the second insulating plate 2032, the second angle ring 302 and the second fixing plate 503 in sequence into one. The fastener 504 can include screws and nuts, but the present invention is not limited thereto, and any other suitable fastening structure can be used as needed.

[0094] In the above embodiment, an example in which three current transformers 105 are provided is shown, but the present invention is not limited thereto. According to actual needs, the number of current transformers 105 can be set to be more or less.

[0095] In the installation device of the current transformer according to the embodiment of the present invention, by sleeve-mounting the current transformer on the outer wall of the insulating tube and arranging metal rings on the upper and lower surfaces of the current transformer, the sharp corners on the current transformer can be effectively shielded, and the current transformer can be prevented from being broken down by a strong electromagnetic field, so that the current transformer can still work normally under high voltage to monitor the transformer winding temperature and measure the power consumption, making the on-site installation operation of the transformer more convenient and the maintenance safer. By further arranging two corner rings at both ends of the current transformer, the electromagnetic field to which the current transformer is subjected can be made more uniform, further preventing the current transformer from being broken down under high voltage.

[0096] According to another embodiment of the present invention, a measuring device for a transformer is provided. Figure 6 A schematic diagram of a measuring device for a transformer according to another embodiment of the present invention is shown. Figure 5 and Figure 6 A measuring device for a transformer according to another disclosed embodiment is described.

[0097] like Figure 6 As shown, a measuring device 600 for a transformer according to another embodiment of the present invention may include a current transformer 105, an insulating cylinder 201 and an insulating member 203. The specific structures of the current transformer 105, the insulating cylinder 201, the insulating member 203 and other components have been described above in conjunction with Figures 2 to 5 To avoid making the present invention obscure due to excessive description, the specific structures of the current transformer 105, the insulating cylinder 201, the insulating member 203 and other components will not be described repeatedly below.

[0098] like Figure 6 As shown, the current transformer 105 is an annular columnar structure, which is sleeved on the outer wall of the insulating tube 201.

[0099] The insulating member 203 includes a first insulating plate 2031 and a second insulating plate 2032 that are opposite to each other and sandwich the current transformer 105. Each of the first insulating plate 2031 and the second insulating plate 2032 may include an insulating plate opening O, an insulating plate inner surface facing the annular columnar structure, an insulating plate outer surface facing away from the annular columnar structure, and a groove.

[0100] Each of the first insulating plate 2031 and the second insulating plate 2032 is sleeved on the outer wall of the insulating cylinder 201 through the respective insulating plate openings O, and the insulating cylinder does not extend beyond the insulating plate outer surfaces of the first insulating plate 2031 and the second insulating plate 2032 in the longitudinal direction.

[0101] The grooves at least include a first annular groove 2031-1 and a second annular groove 2031-2 which are arranged on the inner surface of each of the first insulating plate 2031 and the second insulating plate 2032 and are concentric with the insulating plate opening, and a corresponding metal ring is arranged in each of the first annular groove and the second annular groove. The inner diameter of the first annular groove is the same as the inner diameter of the annular columnar structure of the current transformer 105, and the outer diameter of the second annular groove is the same as the outer diameter of the annular columnar structure.

[0102] Alternatively, if Figure 5 As shown, a measuring device 600 for a transformer according to another embodiment of the present invention may further include a first angle ring 301 and a second angle ring 302 ( Figure 6 The first angle ring 301 may be disposed on an outer surface of the first insulating plate 2031 facing away from the current transformer 105 , and the second angle ring 302 may be disposed on an outer surface of the second insulating plate 2032 facing away from the current transformer 105 .

[0103] The first planar portion 3011 of the first angle ring 301 contacts the outer surface of the first insulating plate 2031, the edge of the first angle ring opening 3012 of the first angle ring 301 is aligned with the inner wall of the insulating tube 201, and the first cylindrical portion 3013 of the first angle ring 301 extends from the first angle ring opening 3012 along the inner wall of the insulating tube 201 into the insulating tube 201.

[0104] The second planar portion 3021 of the second angle ring 302 contacts the outer surface of the second insulating plate 2032, the edge of the second angle ring opening 3022 of the second angle ring 302 is aligned with the inner wall of the insulating tube 201, and the second cylindrical portion 3023 of the second angle ring 302 extends from the second angle ring opening 3022 along the inner wall of the insulating tube 201 into the insulating tube 201.

[0105] Alternatively, if Figure 5 As shown, the measuring device 600 for transformer according to the present invention may further include a first fixing plate 502, a second fixing plate 503 and a fastener 504 ( Figure 6 not shown).

[0106] The first fixing plate 502 is disposed on the first angle ring 301 and has a first opening ( Figure 5 (not shown), the first opening may be disposed at the center of the first fixing plate 502 or at any other position.

[0107] The first fixing plate 502 may be made of cardboard, but the present invention is not limited thereto and any other suitable material may be used as required.

[0108] The second fixing plate 503 is disposed on the second angle ring 302 and has a second opening ( Figure 5 (not shown), the second opening may be provided at the center of the second fixing plate 503 or at any other position.

[0109] The second fixing plate 503 may be made of cardboard, but the present invention is not limited thereto and any other suitable material may be used as required.

[0110] The lead wires are connected to the pluggable cable terminal and the transformer respectively through the first opening and the second opening.

[0111] The fastener 504 can fasten the first fixing plate 502, the first angle ring 301, the first insulating plate 2031, the current transformer 105, the second insulating plate 2032, the second angle ring 302 and the second fixing plate 503 in sequence into one. The fastener 504 can include screws and nuts, but the present invention is not limited thereto, and any other suitable fastening structure can be used as needed.

[0112] In a measuring device for a transformer according to another embodiment of the present invention, by sleeve-mounting a current transformer on the outer wall of an insulating cylinder and arranging metal rings on the upper and lower surfaces of the current transformer, the sharp corners on the current transformer can be effectively shielded, and the current transformer can be prevented from being broken down by a strong electromagnetic field, so that the measuring device can still work normally under high voltage to monitor the transformer winding temperature and measure the power consumption, making the on-site installation operation of the transformer more convenient and the maintenance safer. By arranging two corner rings at both ends of the current transformer, the electromagnetic field to which the measuring device is subjected can be made more uniform, further preventing the measuring device from being broken down under high voltage.

[0113] According to another embodiment of the present invention, a transformer system is provided. Figure 7 A schematic diagram of a transformer system according to another embodiment of the present invention is shown. Figure 1The difference between the transformer system shown in FIG. 1 and FIG. 2 is that the transformer system according to another embodiment of the present invention includes a measuring device 600 for a transformer according to another embodiment of the present invention instead of a current transformer 105. Figure 7 A transformer system according to another embodiment of the present invention is described in detail.

[0114] like Figure 7 As shown, a transformer system 700 according to another embodiment of the present invention includes a transformer (for simplicity, Figure 7 ), the pluggable cable terminal 101, the lead wire 103, the measuring device 600 and the rising seat 107.

[0115] Figure 7 A transformer not shown in the figure is configured to provide a voltage.

[0116] One end of the lead wire 103 is connected to the pluggable cable terminal 101, and the other end is connected to the Figure 7 A transformer (not shown) is used to provide the voltage of the transformer to the plug-in cable terminal 101.

[0117] The pluggable cable terminal 101 includes a sleeve 1011 and a female socket 1013. One end of the sleeve 1011 is provided with a male socket 1012, and the other end is used to provide the voltage received from the transformer to the electrical equipment. The male socket 1012 of the sleeve 1011 is connected or disconnected with the transformer by being inserted into or pulled out of the female socket 1013.

[0118] The measuring device 600 is mounted on the lead wire 103 between the plug-in cable terminal 101 and the transformer to monitor the winding temperature, power consumption, etc. of the transformer. Figures 2 to 6 It has been described in detail and will not be repeated here.

[0119] The raised seat 107 is used to fix the pluggable cable terminal 101 and the lead wire 103 .

[0120] According to another embodiment of the transformer system of the present invention, the measuring device thereof can still monitor the transformer winding temperature and measure the power consumption under high voltage, so that the on-site installation operation of the transformer is more convenient and the maintenance is safer.

[0121] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0122] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A current transformer installation device, characterized in that: include: An insulating cylinder (201), the current transformer (105) being sleeved on the outer wall of the insulating cylinder (201); as well as The insulating member (203) comprises a first insulating plate (2031) and a second insulating plate (2032), wherein the first insulating plate (2031) and the second insulating plate (2032) are opposite to each other and sandwich the current transformer (105) therebetween, and each of the first insulating plate (2031) and the second insulating plate (2032) comprises: Insulating plate opening (O), wherein each of the first insulating plate (2031) and the second insulating plate (2032) is sleeved on the outer wall of the insulating cylinder through the respective insulating plate opening (O); an inner surface of the insulating plate facing the current transformer (105); an outer surface of the insulating plate facing away from the current transformer (105), wherein the insulating cylinder (201) does not extend beyond the outer surface of the insulating plate in the longitudinal direction; and The grooves at least include a first annular groove and a second annular groove which are arranged on the inner surface of the insulating plate and are concentric with the insulating plate opening (O), wherein each of the first annular groove and the second annular groove is respectively provided with a corresponding metal ring, wherein the inner diameter of the first annular groove is the same as the inner diameter of the current transformer (105), and the outer diameter of the second annular groove is the same as the outer diameter of the current transformer (105).

2. The installation device of the current transformer according to claim 1, characterized in that: The installation device of the current transformer also includes: A first angle ring (301), the first angle ring (301) is arranged on the outer surface of the insulating plate of the first insulating plate (2031), and the first angle ring (301) comprises: A first planar portion (3011) contacting an outer surface of the insulating plate of the first insulating plate (2031); The first corner ring opening (3012) has an edge aligned with the inner wall of the insulating cylinder (201); and The first cylindrical portion (3013) extends from the first angle ring opening (3012) along the inner wall of the insulating cylinder (201) into the insulating cylinder (201), A second angle ring (302) is arranged on the outer surface of the insulating plate of the second insulating plate (2032) opposite to the first angle ring (301), and the second angle ring (302) comprises: A second planar portion (3021) contacting the outer surface of the insulating plate of the second insulating plate (2032); The second corner ring opening (3022) has an edge aligned with the inner wall of the insulating cylinder (201); and The second cylindrical portion (3023) extends from the second angle ring opening (3022) along the inner wall of the insulating tube (201) into the insulating tube (201).

3. The installation device of the current transformer according to claim 2, characterized in that: The installation device of the current transformer also includes: A first fixing plate (502) is arranged on the first angle ring (301) and has a first opening for a lead wire detected by the current transformer (105) to pass through; a second fixing plate (503), disposed on the second angle ring (302), and having a second opening for the lead wire to pass through; and The fastener (504) fastens the first fixing plate (502), the first angle ring (301), the first insulating plate (2031), the current transformer (105), the second insulating plate (2032), the second angle ring (302) and the second fixing plate (503) into one piece in sequence.

4. The installation device for current transformer according to any one of claims 1 to 3, characterized in that: There are three current transformers (105), and the insulating tube (201) is a paper tube.

5. A measuring device for a transformer, characterized in that: include: A current transformer (105), wherein the current transformer (105) is a ring-shaped columnar structure; An insulating cylinder (201), wherein the annular columnar structure is sleeved on the outer wall of the insulating cylinder (201); as well as The insulating member (203) comprises a first insulating plate (2031) and a second insulating plate (2032), wherein the first insulating plate (2031) and the second insulating plate (2032) are opposite to each other and the annular columnar structure is sandwiched between them, and each of the first insulating plate (2031) and the second insulating plate (2032) comprises: Insulating plate openings (O), wherein each of the first insulating plate (2031) and the second insulating plate (2032) is sleeved on the outer wall of the insulating cylinder (201) through the respective insulating plate openings (O); An inner surface of the insulating plate facing the annular columnar structure; an outer surface of the insulating plate facing away from the annular columnar structure, wherein the insulating tube (201) does not extend beyond the outer surface of the insulating plate in the longitudinal direction; and The groove at least includes a first annular groove and a second annular groove which are arranged on the inner surface of the insulating plate and are concentric with the insulating plate opening (O), and each of the first annular groove and the second annular groove is respectively provided with a corresponding metal ring, wherein the inner diameter of the first annular groove is the same as the inner diameter of the annular columnar structure, and the outer diameter of the second annular groove is the same as the outer diameter of the annular columnar structure.

6. The measuring device for transformer according to claim 5, characterized in that: The measuring device for the transformer also includes: A first angle ring (301), the first angle ring (301) is arranged on the outer surface of the insulating plate of the first insulating plate (2031), and the first angle ring (301) comprises: A first planar portion (3011) contacting an outer surface of the insulating plate of the first insulating plate (2031); The first corner ring opening (3012) has an edge aligned with the inner wall of the insulating cylinder (201); and The first cylindrical portion (3013) extends from the first angle ring opening (3012) along the inner wall of the insulating cylinder (201) into the insulating cylinder (201), A second angle ring (302) is arranged on the outer surface of the insulating plate of the second insulating plate (2032) opposite to the first angle ring (301), and the second angle ring (302) comprises: A second planar portion (3021) contacting the outer surface of the insulating plate of the second insulating plate (2032); The second corner ring opening (3022) has an edge aligned with the inner wall of the insulating cylinder (201); and The second cylindrical portion (3023) extends from the second angle ring opening (3022) along the inner wall of the insulating tube (201) into the insulating tube (201).

7. The measuring device for transformer according to claim 6, characterized in that: The measuring device for the transformer also includes: A first fixing plate (502) is arranged on the first angle ring (301) and has a first opening for a lead wire detected by the current transformer (105) to pass through; a second fixing plate (503), disposed on the second angle ring (302), and having a second opening for the lead wire to pass through; and The fastener (504) fastens the first fixing plate (502), the first angle ring (301), the first insulating plate (2031), the current transformer (105), the second insulating plate (2032), the second angle ring (302) and the second fixing plate (503) into one piece in sequence.

8. The measuring device for a transformer according to any one of claims 5 to 7, characterized in that: There are three current transformers (105), and the insulating tube (201) is a paper tube.

9. A transformer system, characterized in that: include: a transformer configured to provide a voltage; A cable terminal (101) is pluggably connected to the transformer via a lead wire (103), and the cable terminal (101) is configured to receive a voltage from the transformer via the lead wire (103) and provide the received voltage to an electrical device; as well as The measuring device for a transformer according to any one of claims 5 to 8 is sleeved on the lead wire between the cable terminal and the transformer.

10. The transformer system according to claim 9, characterized in that: The cable terminal (101) comprises: A sleeve (1011), one end of which includes a male seat (1012); A female socket (1013), one end of which is connected to the lead wire (103), The cable terminal (101) is connected to the transformer by plugging and unplugging through the lead wire (103) by inserting the male socket (1012) into the female socket (1013).

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