A transformer dynamic characteristics monitoring device

Abstract

The present application belongs to the technical field of power distribution detection auxiliary equipment, and in particular, relates to a transformer dynamic characteristic monitoring device. It includes a mounting tube, a multi-directional connector, a transmission part, a permanent magnet rod, a compression spring, and a reset rubber ring; the mounting tube opening faces downward, the multi-directional connector is arranged inside the mounting tube, the reset rubber ring is buckled at the opening of the lower end of the mounting tube, and the inner edge of the reset rubber ring is buckled on the connecting platform e so that the multi-directional connector has a tendency to move downward; the compression spring is arranged on the lower side of the transmission part, the lower end of the compression spring abuts on the mounting tube or the reset rubber ring, and the upper end abuts on the transmission part so that it has a tendency to move upward. The transformer dynamic characteristic monitoring device of the present application has a compact and simple structure, which can conveniently install and fix the sensor used for detection, and use the magnet drive structure arranged thereon to convert the on-site electromagnetic field changes into displacement, so as to facilitate real-time monitoring of the changes in different shared electromagnetic fields.

Description

Technical Field

[0001] The present application belongs to the technical field of power distribution detection auxiliary equipment, and in particular, relates to a transformer dynamic characteristics monitoring device. Background Art

[0002] In the process of transformer dynamic characteristics monitoring, it is necessary to measure the electrical characteristics and structural characteristics of the transformer room in real time, and analyze and obtain the relevant data of the transformer dynamic characteristics based on the measurement results. Among them, the electromagnetic characteristics of the transformer during operation are an important parameter to be measured. For some closed transformers or transformers that cannot be directly measured, various types of indirect measurement devices that can be fixed on the transformer are required to complete the measurement. During the measurement process, the data acquisition of a certain measuring point is often affected by the comprehensive influence of the nearby electromagnetic field. Therefore, it is necessary to perform multiple multi-point measurements and then perform comprehensive calculation and analysis to obtain the final data. The traditional solution requires multiple measurement procedures to be executed, and the overall process is complicated and time-consuming. Summary of the invention

[0003] The purpose of the present application is to provide a transformer dynamic characteristics monitoring device which is convenient for performing multiple multi-directional electromagnetic field measurement feedback on measuring points and can improve the transformer dynamic characteristics measurement efficiency.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] A transformer dynamic characteristics monitoring device comprises a mounting tube 1, a multi-directional connecting member 2, a transmission member 3, a permanent magnet rod 4, a compression spring 5, and a reset rubber ring 6;

[0006] The installation tube 1 is opened downward, and a plurality of installation portions 1a are arranged in a circular array on the outer circumferential surface of the installation tube 1. A vertical installation cavity 1b is arranged from top to bottom in the installation portion 1a, and a vertical guide groove 1c is arranged on one side of the vertical installation cavity 1b facing the central axis of the installation tube 1.

[0007] The multi-directional connecting member 2 is arranged inside the mounting tube 1. The multi-directional connecting member 2 is provided with a plurality of mounting arms 2a that can swing up and down. The ends of the mounting arms 2a are provided with connecting parts 2b. The connecting parts 2b are provided with connecting holes 2c. The ends of the mounting arms 2a extend downward to form connecting arms 2d. The ends of the connecting arms 2d extend outward to form connecting platforms 2e.

[0008] The transmission member 3 is slidably arranged in the vertical guide groove 1c, one side of the transmission member 3 extends toward the vertical installation cavity 1b to form a magnet support arm 3a, and the other side extends toward the central axis direction of the installation cylinder 1 to form a control arm 3c; the magnet support arm 3a is provided with a permanent magnet rod installation hole 3b, and the control arm 3c is provided with a connecting shaft 3d inserted into the connecting hole 2c;

[0009] The permanent magnet bar 4 is installed in the permanent magnet bar installation hole 3b and moves up and down in the vertical guide groove 1c along with the transmission member 3; the reset rubber ring 6 is buckled at the lower end opening of the installation tube 1, and the inner edge of the reset rubber ring 6 is buckled on the connecting platform 2e so that the multi-directional connecting member 2 has a tendency to move downward;

[0010] The compression spring 5 is arranged at the lower side of the transmission member 3 , the lower end of the compression spring 5 abuts against the mounting tube 1 or the reset rubber ring 6 , and the upper end abuts against the transmission member 3 to make it have a tendency to move upward.

[0011] A further improvement or preferred implementation scheme of the above transformer dynamic characteristic monitoring device is that an isolation cover tube 1d is arranged inside the mounting tube 1; the isolation cover tube 1d is arranged coaxially with the mounting tube 1, and the upper end of the isolation cover tube 1d is connected to the bottom of the mounting tube 1; an isolation chamber 1e is formed between the isolation cover tube 1d and the mounting tube 1; a transition guide groove 1f corresponding to the vertical guide groove 1c and extending in the same direction is arranged on the inner wall of the isolation cover tube 1d; the transmission member 3 is arranged between the vertical guide groove 1c and the transition guide groove 1f so as to be slidable up and down;

[0012] A further improvement or preferred implementation scheme of the aforementioned transformer dynamic characteristics monitoring device also includes a positioning member 7 fixedly arranged at the bottom of the mounting tube 1; a positioning column 7a is arranged at the lower end of the positioning member 7, and the positioning column 7a is arranged coaxially with the central axis of the mounting tube 1; a positioning ring 2f that can be sleeved on the positioning column 7a is arranged in the middle part of the multi-directional connecting member 2, and the multi-directional connecting member 2 is movably sleeved on the positioning column 7a through the positioning ring 2f.

[0013] As a further improvement or preferred implementation scheme of the aforementioned transformer dynamic characteristics monitoring device, the reset rubber ring 6 is a rotating body structure, including an inner ring 6a that can be buckled on each connecting platform 2e from top to bottom, an outer ring 6b that can be pressed against the opening at the lower end of the mounting tube 1, and an elastic conical cylinder portion 6c for connecting the inner ring 6a and the outer ring 6b.

[0014] A further improvement or preferred implementation scheme of the aforementioned transformer dynamic characteristics monitoring device, the upper end of the free end of the magnet support arm 3a is provided with an adjustment threaded hole 3e, the adjustment threaded hole 3e is coaxial with and connected to the permanent magnet bar mounting hole 3b; an adjustment bolt 3f is provided in the adjustment threaded hole 3e; the adjustment bolt 3f is connected to the permanent magnet bar 4.

[0015] As a further improvement or preferred implementation scheme of the aforementioned transformer dynamic characteristics monitoring device, a spring connecting column 3g is provided on the lower middle side of the transmission member 3; a spring supporting column 1g is correspondingly provided on the inner side of the lower end opening of the mounting tube 1; and both ends of the compression spring 5 are respectively sleeved on the spring connecting column 3g and the spring supporting column 1g.

[0016] Its beneficial effects are:

[0017] The transformer dynamic characteristics monitoring device of the present application has a compact and simple structure. It can conveniently install and fix sensors used for detection, and use the magnet driving structure provided thereon to convert on-site electromagnetic field changes into displacements, so as to facilitate real-time monitoring of changes in different electromagnetic fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of a transformer dynamic characteristics monitoring device. Figure 1

[0019] Figure 2 This is a cross-sectional view of a transformer dynamic characteristics monitoring device. Figure 2

[0020] Figure 3 This is the assembly drawing of the transformer dynamic characteristics monitoring device

[0021] Figure 4 It is a schematic diagram of the structure of the installation tube;

[0022] Figure 5 It is a schematic diagram of the structure of the transmission parts;

[0023] Figure 6 It is a schematic diagram of the structure of a multi-directional connector;

[0024] The reference numerals include:

[0025] Mounting cylinder 1, mounting portion 1a, vertical mounting cavity 1b, vertical guide groove 1c, isolation cover cylinder 1d, isolation cavity 1e, transition guide groove 1f, spring support column 1g, multi-directional connecting piece 2, mounting arm 2a, connecting portion 2b, connecting hole 2c, connecting arm 2d, connecting platform 2e, positioning ring 2f, transmission part 3, magnet support arm 3a, permanent magnet rod mounting hole 3b, control arm 3c, connecting shaft 3d, adjusting threaded hole 3e, adjusting bolt 3f, spring connecting column 3g, permanent magnet rod 4, compression spring 5, reset rubber ring 6, inner ring 6a, outer ring 6b, elastic conical cylinder portion 6c, positioning piece 7, positioning column 7a. DETAILED DESCRIPTION

[0026] The present application is described in detail below in conjunction with specific embodiments.

[0027] like Figure 1 As shown, the present application provides a transformer dynamic characteristic monitoring device, which is mainly used for indirect dynamic characteristic measurement of various types of transformers. Specifically, the device and sensors that can be installed on the device are used to obtain the external electromagnetic field change data of the transformer to collect the dynamic characteristic parameters of the transformer. At the same time, the change of the transformer's own electromagnetic field is used to drive the displacement of the internal magnetic structure of the control device, so that simple sensing equipment such as displacement and vibration sensors can be used to realize simple monitoring of the change of the transformer dynamic characteristic field, thereby improving flexibility.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the basic structure of the transformer dynamic characteristics monitoring device includes a mounting cylinder 1, a multi-directional connecting member 2, a transmission member 3, a permanent magnet rod 4, a compression spring 5, and a reset rubber ring 6;

[0029] The installation tube 1 is open downward, and a plurality of installation portions 1a are arranged in a circular array on the outer circumferential surface of the installation tube 1, a vertical installation cavity 1b is arranged from top to bottom in the installation portion 1a, and a vertical guide groove 1c is arranged on the side of the vertical installation cavity 1b facing the central axis of the installation tube 1; a multi-directional connecting member 2 is arranged inside the installation tube 1, and a plurality of installation arms 2a that can swing up and down are arranged on the multi-directional connecting member 2, a connecting portion 2b is arranged at the end of the installation arm 2a, a connecting hole 2c is arranged on the connecting portion 2b, the end of the installation arm 2a extends downward to form a connecting arm 2d, and the end of the connecting arm 2d extends outward to form a connecting platform 2e;

[0030] The transmission member 3 is slidably arranged in the vertical guide groove 1c, one side of the transmission member 3 extends toward the vertical installation cavity 1b to form a magnet support arm 3a, and the other side extends toward the central axis direction of the installation cylinder 1 to form a control arm 3c; the magnet support arm 3a is provided with a permanent magnet rod installation hole 3b, and the control arm 3c is provided with a connecting shaft 3d inserted into the connecting hole 2c;

[0031] The permanent magnet bar 4 is installed in the permanent magnet bar installation hole 3b and moves up and down in the vertical guide groove 1c along with the transmission member 3; the reset rubber ring 6 is buckled at the lower end opening of the installation tube 1, and the inner edge of the reset rubber ring 6 is buckled on the connecting platform 2e so that the multi-directional connecting member 2 has a tendency to move downward;

[0032] The compression spring 5 is arranged at the lower side of the transmission member 3 , the lower end of the compression spring 5 abuts against the mounting tube 1 or the reset rubber ring 6 , and the upper end abuts against the transmission member 3 to make it have a tendency to move upward.

[0033] In the specific use process, various sensor units required are fixed on the device, and the displacement and vibration sensors are fixed on the arms of the multi-directional connectors in the device. Finally, the device is fixed on the transformer test point, and the axis of the installation cylinder is coincident with the test point for measurement. In the specific use process, in addition to obtaining the necessary data using the sensor units fixed on the device, permanent magnets are distributed in different directions of the test point. When the dynamic characteristics of the transformer change and cause sudden changes in the electromagnetic field in various directions, the magnets will be driven to move and the arms of the multi-connectors will produce different displacements. In this way, the indirect measurement of the change of the electromagnetic field is achieved through the amplitude and frequency of each arm, and the synchronous collection of the electromagnetic field in various directions of the test point is achieved.

[0034] In order to avoid the interference of the strong electromagnetic field of the transformer itself on the more precise electrical sensors, in the present application, an isolation cover tube 1d is arranged inside the mounting tube 1; the isolation cover tube 1d is arranged coaxially with the mounting tube 1, and the upper end of the isolation cover tube 1d is connected to the bottom of the mounting tube 1; an isolation cavity 1e is formed between the isolation cover tube 1d and the mounting tube 1; a transition guide groove 1f corresponding to the vertical guide groove 1c and extending in the same direction is arranged on the inner wall of the isolation cover tube 1d; the transmission member 3 is arranged between the vertical guide groove 1c and the transition guide groove 1f so as to be slidable up and down;

[0035] The isolation cover tube 1d and the shell wall of the installation tube 1 form an isolation interval, and the electromagnetic influence can be blocked and weakened by filling the isolation cavity with isolation medium to improve the accuracy of the measurement data.

[0036] In order to support and position the multi-directional connector so that it can move smoothly under the pull of the spring and the magnet and better obtain various magnetic field data, the present embodiment also includes a positioning member 7 fixedly arranged at the bottom of the mounting tube 1; a positioning column 7a is arranged at the lower end of the positioning member 7, and the positioning column 7a is arranged coaxially with the central axis of the mounting tube 1; a positioning ring 2f that can be sleeved on the positioning column 7a is arranged in the middle part of the multi-directional connector 2, and the multi-directional connector 2 is movably sleeved on the positioning column 7a through the positioning ring 2f.

[0037] As a preferred implementation scheme, the reset rubber ring 6 is a rotating body structure, including an inner ring 6a that can be buckled on each connecting platform 2e from top to bottom, an outer ring 6b that can be against the opening at the lower end of the mounting tube 1, and an elastic conical cylinder portion 6c for connecting the inner ring 6a and the outer ring 6b.

[0038] In particular, affected by the transformer frame structure, etc., the device may need to adjust the relative position distance between the magnet and the magnetic field center before use, so that before the measurement starts, the calibration data of each magnet relative to each magnetic field of the measured point are consistent. In this embodiment, an adjustment threaded hole 3e is provided at the upper end of the free end of the magnet support arm 3a, and the adjustment threaded hole 3e is coaxial and connected with the permanent magnet bar mounting hole 3b; an adjustment bolt 3f is provided in the adjustment threaded hole 3e; and the adjustment bolt 3f is connected to the permanent magnet bar 4. The upper and lower positions of the permanent magnet can be fine-tuned by using the adjustment bolt to control the distance between the permanent magnet and the center of the magnetic field in each direction.

[0039] To facilitate the fixing of the compression spring, a spring connecting column 3g is provided on the lower middle side of the transmission member 3; a spring supporting column 1g is correspondingly provided on the inner side of the lower end opening of the mounting tube 1; and both ends of the compression spring 5 are respectively sleeved on the spring connecting column 3g and the spring supporting column 1g.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, rather than to limit the protection scope of the present application.

Claims

1. A transformer dynamic characteristics monitoring device, characterized in that: It comprises a mounting tube (1), a multi-directional connecting piece (2), a transmission piece (3), a permanent magnet rod (4), a compression spring (5), and a reset rubber ring (6); The installation tube (1) is opened downwards, and a plurality of installation portions (1a) are arranged in a circular array on the outer circumferential surface of the installation tube (1), a vertical installation cavity (1b) is arranged from top to bottom in the installation portion (1a), and a vertical guide groove (1c) is arranged on one side of the vertical installation cavity (1b) facing the central axis of the installation tube (1); The multi-directional connecting member (2) is arranged inside the mounting tube (1), and a plurality of mounting arms (2a) are arranged on the multi-directional connecting member (2) and can slide up and down together with the transmission member (3), a connecting portion (2b) is arranged at the end of the mounting arm (2a), a connecting hole (2c) is arranged on the connecting portion (2b), the end of the mounting arm (2a) extends downward to form a connecting arm (2d), and the end of the connecting arm (2d) extends outward to form a connecting platform (2e); The transmission member (3) is slidably arranged in the vertical guide groove (1c) up and down; one side of the transmission member (3) extends toward the vertical installation cavity (1b) to form a magnet support arm (3a); the other side extends toward the central axis direction of the installation cylinder (1) to form a control arm (3c); the magnet support arm (3a) is provided with a permanent magnet rod installation hole (3b); the control arm (3c) is provided with a connecting shaft (3d) inserted into the connecting hole (2c); The permanent magnet bar (4) is installed in the permanent magnet bar installation hole (3b) and moves up and down in the vertical guide groove (1c) along with the transmission member (3); the reset rubber ring (6) is buckled at the lower end opening of the installation tube (1), and the inner edge of the reset rubber ring (6) is buckled on the connecting platform (2e) so that the multi-directional connecting member (2) has a tendency to move downward; The compression spring (5) is arranged on the lower side of the transmission member (3), the lower end of the compression spring (5) abuts against the installation tube (1) or the reset rubber ring (6), and the upper end abuts against the transmission member (3) to make it have a tendency to move upward.

2. A transformer dynamic characteristics monitoring device according to claim 1, characterized in that: An isolation cover tube (1d) is arranged on the inner side of the installation tube (1); the isolation cover tube (1d) is arranged coaxially with the installation tube (1), and the upper end of the isolation cover tube (1d) is connected to the bottom of the installation tube (1); an isolation chamber (1e) is formed between the isolation cover tube (1d) and the installation tube (1); a transition guide groove (1f) corresponding to the vertical guide groove (1c) and extending in the same direction is arranged on the inner wall of the isolation cover tube (1d); and a transmission member (3) is arranged between the vertical guide groove (1c) and the transition guide groove (1f) so as to be able to slide up and down.

3. A transformer dynamic characteristics monitoring device according to claim 1, characterized in that: The invention also comprises a positioning member (7) fixedly arranged at the bottom of the installation tube (1); a positioning column (7a) is arranged at the lower end of the positioning member (7), and the positioning column (7a) is arranged coaxially with the central axis of the installation tube (1); a positioning ring (2f) which can be sleeved on the positioning column (7a) is arranged in the middle of the multi-directional connecting member (2), and the multi-directional connecting member (2) is movably sleeved on the positioning column (7a) through the positioning ring (2f).

4. A transformer dynamic characteristics monitoring device according to claim 1, characterized in that: The reset rubber ring (6) is a rotating body structure, comprising an inner ring (6a) that can be buckled on each connecting platform (2e) from top to bottom, an outer ring (6b) that can be pressed against the opening at the lower end of the installation cylinder (1), and an elastic cone cylinder portion (6c) used to connect the inner ring (6a) and the outer ring (6b).

5. A transformer dynamic characteristics monitoring device according to claim 1, characterized in that: An adjusting threaded hole (3e) is provided at the upper end of the free end of the magnet support arm (3a); the adjusting threaded hole (3e) is coaxial with and connected to the permanent magnet bar mounting hole (3b); an adjusting bolt (3f) is provided in the adjusting threaded hole (3e); and the adjusting bolt (3f) is connected to the permanent magnet bar (4).

6. A transformer dynamic characteristics monitoring device according to claim 1, characterized in that: A spring connecting column (3g) is arranged at the lower middle side of the transmission member (3); a spring supporting column (1g) is correspondingly arranged at the inner side of the lower opening of the installation cylinder (1); and two ends of the compression spring (5) are respectively sleeved on the spring connecting column (3g) and the spring supporting column (1g).

Images