Partial discharge detection device for hydraulic turbine set

Abstract

The utility model discloses a hydraulic turbine set partial discharge detection device, which relates to the technical field of hydraulic turbine set detection and specifically comprises a box body, a heat dissipation cover is hinged on the box body, a wiring hole is arranged on the box body, and an installation cavity is arranged in the box body. The bearing assembly is fixedly arranged in the mounting cavity, the heat dissipation structure is mounted on the inner side wall of the heat dissipation cover, and the instrument body is detachably arranged on the bearing assembly; the instrument body is provided with a plurality of heat dissipation holes, and the detection end of the instrument body extends to the outside of the box body through the wiring hole and is electrically connected with a to-be-detected unit. The partial discharge detection device solves the problem that the existing partial discharge detection device is poor in heat dissipation effect, and has the advantages of simple structure and low manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbine unit detection, in particular to a water turbine unit partial discharge detection device. Background Art

[0002] A hydroelectric generator set is also called a "water turbine generator set". Each turbine and its matching generator form a power generation unit, which is the main power equipment for generating electricity in a hydropower station.

[0003] During operation, the insulation of the turbine unit cannot always maintain the purity and density of the insulating medium for various reasons, and foreign objects such as tiny bubbles, moisture and other impurities will always be introduced under certain conditions. When voltage is applied to the insulation, the presence of these foreign objects causes the electric field to be distorted, resulting in uneven distribution of the electric field strength, causing the electric field near these foreign objects to be more concentrated and have a higher field strength than the surrounding area. When a certain limit value is reached, these parts with insulation defects will first undergo ionization discharge, which is called partial discharge. Partial discharge is an important feature that reflects the health of the insulation of the turbine unit. Therefore, inspectors often use partial discharge detection devices to understand the health of the insulation of the turbine unit. However, the existing partial discharge detection device has a relatively simple structure. When the inspectors frequently operate the device, the heat dissipation effect of the parts inside the device is poor, which will cause the partial discharge detection device to be easily damaged during use, and even cause certain dangers to the inspectors in severe cases. Utility Model Content

[0004] The utility model aims to solve the problems existing in the above-mentioned technologies and proposes a partial discharge detection device for a water turbine unit, so as to solve the problem that the existing partial discharge detection device has poor heat dissipation effect.

[0005] The utility model provides a partial discharge detection device for a water turbine unit, comprising:

[0006] A box body, a heat dissipation cover is hinged on the box body, a wiring hole is opened on the box body, and an installation chamber is arranged inside the box body;

[0007] A supporting assembly is fixedly arranged in the installation chamber;

[0008] The heat dissipation structure is installed on the inner wall of the heat dissipation cover;

[0009] The instrument body is detachably mounted on the supporting assembly. A plurality of heat dissipation holes are arranged on the instrument body. The detection end of the instrument body extends to the outside of the box through the wiring hole and is electrically connected to the unit to be detected.

[0010] Preferably, non-slip pads are fixed at the four corners of the bottom of the box, an opening communicating with the installation chamber is provided at the top of the box, and the heat dissipation cover is hingedly connected to the opening. The heat dissipation cover includes a cover shell, a protective interlayer, and a handle for controlling the cover shell to be in an open and closed state, the cover shell is hinged to the box body through a hinge structure, the protective interlayer is filled on the inner side wall of the cover shell, the heat dissipation structure is installed on the protective interlayer, and the handle is fixed on the outer side wall of the cover shell.

[0011] A limiting assembly is connected between the cover shell and the box body, and the limiting assembly includes a first connecting piece, a sleeve, a telescopic rod, and a second connecting piece fixed to the outer wall of the cover shell. The first connecting piece is fixed to the outer wall of the box body, one end of the sleeve is installed on the first connecting piece, the other end of the sleeve is slidably connected to one end of the telescopic rod, and the other end of the telescopic rod is installed on the second connecting piece.

[0012] Preferably, a locking structure is also included, which includes a limit piece and a clamping piece. The limit piece is fixed at the edge of the opening, the clamping piece is fixed on the outer wall of the cover shell, a limit groove is arranged at the bottom of the limit piece, and a clamping rod is assembled on the clamping piece, and the clamping rod is adapted to the limit groove.

[0013] Preferably, the supporting assembly includes a positioning plate, a supporting member, and a lifting seat fixed to the bottom of the inner side of the box body, the positioning plate is detachably fixed to the top of the lifting seat, a rotating shaft is rotatably mounted on one side of the positioning plate, one end of the supporting member is fixedly connected to the rotating shaft and is used to support and install the instrument body. The supporting assembly also includes a locking column located on the other side of the positioning plate, a hook is provided on the top of the locking column, and the hook is used to limit and fix the other end of the supporting member.

[0014] Preferably, a plurality of first heat exhaust holes are provided on the positioning plate; a plurality of second heat exhaust holes are provided on the inner bottom of the box body; the number of the first heat exhaust holes is the same as the number of the second heat exhaust holes and corresponds one to one.

[0015] Preferably, the heat dissipation structure includes a radiator fixedly mounted on the inner wall of the protective barrier, a liquid cooling plate is laid on the inner top wall of the housing, a pipe groove is provided on the inner wall of the liquid cooling plate, a copper pipe is fixedly connected to the inner wall of the pipe groove, a water outlet is provided at one end of the copper pipe, and a water inlet is provided at the other end of the copper pipe.

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

[0017] 1. By setting the wiring hole to extend the detection end of the instrument body, the detection device can better detect the electrical connection of the units to be detected in different positions or different sizes.

[0018] 2. By setting up the supporting assembly, the installation of the instrument body is facilitated, which is beneficial to the subsequent disassembly, assembly and maintenance.

[0019] 3. By setting up the heat dissipation structure, the heat dissipation area can be increased, so that the instrument body in the box can achieve the effect of cooling and heat dissipation.

[0020] 4. By setting up heat dissipation holes, the heat dissipation effect inside the instrument body is ensured, the stable operation of the instrument body is ensured and the service life is extended; the setting of the above heat dissipation structure and heat dissipation holes solves the problem of poor heat dissipation effect of the existing partial discharge detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of the partial discharge detection device for a water turbine unit of the utility model;

[0023] Figure 2 for Figure 1 A magnified schematic diagram of the middle part;

[0024] Figure 3 It is an internal schematic diagram of the partial discharge detection device for a water turbine unit of the utility model;

[0025] Figure 4 for Figure 3 The enlarged schematic diagram of the middle B part;

[0026] Figure 5 It is a side view of the partial discharge detection device for a water turbine unit of the utility model;

[0027] Figure 6 It is a partial structural schematic diagram of the heat dissipation cover of the utility model.

[0028] In the figure, 1-box; 11-wiring hole; 12-anti-slip foot pad; 2-heat dissipation cover; 21-cover; 211-liquid cooling plate; 22-protective interlayer; 23-handle; 3-supporting assembly; 31-positioning plate; 32-supporting member; 33-locking column; 4-instrument body; 5-limiting assembly; 51-first connecting member; 52-sleeve; 53-telescopic rod; 54-second connecting member; 6-locking structure; 61-limiting member; 62-clamping member; 7-radiator; 8-copper tube; 9-water outlet; 10-water inlet. DETAILED DESCRIPTION

[0029] In order to make it easier to understand the structure of the present invention and the functional features and advantages that can be achieved, the preferred embodiments of the present invention are described in detail with reference to the drawings as follows:

[0030] Example:

[0031] like Figures 1 to 6 As shown, the utility model provides a partial discharge detection device for a water turbine unit, comprising:

[0032] A box body 1 is hinged with a heat dissipation cover 2 to facilitate opening and closing of the heat dissipation cover 2. A wiring hole 11 is provided on the box body 1, and an installation chamber is provided inside the box body 1;

[0033] A supporting assembly 3 is fixedly arranged in the installation chamber;

[0034] The heat dissipation structure is installed on the inner wall of the heat dissipation cover 2 to dissipate heat;

[0035] The instrument body 4 is detachably mounted on the supporting assembly 3 . The instrument body 4 is provided with a plurality of heat dissipation holes. The detection end of the instrument body 4 extends to the outside of the box 1 through the wiring hole 11 and is electrically connected to the unit to be detected.

[0036] See also Figure 1 The four corners of the bottom of the box 1 of the present application are all fixed with anti-skid pads 12, the top of the box 1 is provided with an opening connected to the installation chamber, and the heat dissipation cover 2 is hingedly connected to the opening. By providing the anti-skid pads 12, the friction of the box 1 when placed can be effectively increased, the stability of the box 1 can be improved, and the box 1 can be prevented from moving.

[0037] See also Figure 3 The heat dissipation cover 2 of the present application includes a cover shell 21, a protective interlayer 22, and a handle 23 for controlling the cover shell 21 to be in an open or closed state. The cover shell 21 is hinged to the box body 1 through a hinge structure, the protective interlayer 22 is filled on the inner wall of the cover shell 21, the heat dissipation structure is installed on the protective interlayer 22, and the handle 23 is fixed on the outer wall of the cover shell 21. By setting the protective interlayer 22, the detection device can have a certain sound insulation and shock absorption effect.

[0038] As another embodiment of the present application, Figure 5 As shown, the limit assembly 5 is connected between the cover 21 and the box body 1 of the present application, and the limit assembly 5 includes a first connecting member 51, a sleeve 52, a telescopic rod 53, and a second connecting member 54 fixed on the outer wall of the cover 21. The first connecting member 51 is fixed on the outer wall of the box body 1, one end of the sleeve 52 is mounted on the first connecting member 51, and the other end of the sleeve 52 is slidably connected to one end of the telescopic rod 53, and the other end of the telescopic rod 53 is mounted on the second connecting member 54. By providing the telescopic rod 53, the degree of telescopic extension of the telescopic rod 53 in the sleeve 52 can adjust the support for the cover 21, which is conducive to maintaining the opening and closing degree of the cover 21 on the box body 1, and is convenient for the inspection personnel to inspect and maintain the instrument body 4 in the box body 1 or adjust the wiring.

[0039] As another embodiment of the present application, Figure 1 and Figure 2 As shown, the present application also includes a locking structure 6, which includes a limiter 61 and a clamping member 62. The limiter 61 is fixed at the edge of the opening, and the clamping member 62 is fixed on the outer wall of the cover shell 21. A limit groove is provided at the bottom of the limiter 61, and a clamping rod is mounted on the clamping member 62, and the clamping rod is adapted to the limit groove. The locking and fixing between the cover shell 21 and the box body 1 is achieved by the cooperation between the clamping rod and the limit groove.

[0040] As another embodiment of the present application, Figure 3 and Figure 4 As shown, the supporting assembly 3 of the present application includes a positioning plate 31, a supporting member 32, and a lifting seat fixed to the inner bottom of the box body 1. The positioning plate 31 is detachably fixed to the top of the lifting seat. A rotating shaft is rotatably mounted on one side of the positioning plate 31. One end of the supporting member 32 is fixedly connected to the rotating shaft and is used to support and install the instrument body 4. By setting the rotating shaft, the rotation of the rotating shaft can control the swinging movement of the supporting member 32, so that the instrument body 4 installed on the supporting member 32 can adjust the installation position, which is convenient for maintenance personnel to disassemble or repair the instrument body 4.

[0041] See also Figure 4 The supporting assembly 3 of the present application also includes a locking column 33 located on the other side of the positioning plate 31. A hook is provided on the top of the locking column 33. The hook is used to limit and fix the other end of the supporting member 32 to achieve the fixation of the positioning plate 31 and improve the stability of the instrument body 4 during installation.

[0042] See also Figure 1 and Figure 4 The positioning plate 31 of the present application is provided with a plurality of first heat discharge holes (not shown); the inner bottom of the box body 1 is provided with a plurality of second heat discharge holes (not shown); the number of the first heat discharge holes is the same as the number of the second heat discharge holes and corresponds one to one.

[0043] See also Figure 6 The heat dissipation structure of the present application includes a radiator 7 fixedly mounted on the inner wall of the protective barrier 22, a liquid cooling plate 211 is laid on the inner top wall of the housing 21, and a pipe groove is opened on the inner wall of the liquid cooling plate 211. By providing the liquid cooling plate 211, the heat dissipation efficiency on the housing 21 can be improved, so that the heat dissipation of the detection device can be effectively achieved.

[0044] See also Figure 6 The inner wall of the pipe groove of the present application is fixedly connected with a copper pipe 8, one end of the copper pipe 8 is provided with a water outlet 9, and the other end of the copper pipe 8 is provided with a water inlet 10. By providing the water outlet 9 and the water inlet 10, water can be introduced into the copper pipe 8 and discharged from the copper pipe 8 to achieve heat dissipation.

[0045] The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the present invention by using the above technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention belong to the protection scope of the present technical solution.

Claims

1. A partial discharge detection device for a hydraulic turbine unit, characterized in that: include: A box body (1), a heat dissipation cover (2) is hingedly connected to the box body (1), a wiring hole (11) is opened on the box body (1), and an installation chamber is provided inside the box body (1); A supporting assembly (3) is fixedly arranged in the installation chamber; A heat dissipation structure, mounted on the inner wall of the heat dissipation cover (2); The instrument body (4) is detachably mounted on the supporting assembly (3), and a plurality of heat dissipation holes are provided on the instrument body (4). The detection end of the instrument body (4) extends to the outside of the box (1) through the wiring hole (11) and is electrically connected to the unit to be detected.

2. The partial discharge detection device for a water turbine unit according to claim 1, characterized in that: Anti-slip pads (12) are fixed at the four corner ends of the bottom of the box body (1), an opening communicating with the installation chamber is provided at the top of the box body (1), and the heat dissipation cover (2) is hingedly connected to the opening.

3. The partial discharge detection device for a water turbine unit according to claim 2, characterized in that: The heat dissipation cover (2) comprises a cover shell (21), a protective interlayer (22), and a handle (23) for controlling the opening and closing state of the cover shell (21); the cover shell (21) is hinged to the box body (1); the protective interlayer (22) is filled on the inner side wall of the cover shell (21); the heat dissipation structure is mounted on the protective interlayer (22); and the handle (23) is fixed on the outer side wall of the cover shell (21).

4. The partial discharge detection device for a water turbine unit according to claim 3, characterized in that: A limit assembly (5) is connected between the cover shell (21) and the box body (1), the limit assembly (5) comprising a first connecting member (51), a sleeve (52), a telescopic rod (53), and a second connecting member (54) fixed to the outer wall of the cover shell (21), the first connecting member (51) being fixed to the outer wall of the box body (1), one end of the sleeve (52) being mounted on the first connecting member (51), the other end of the sleeve (52) being slidably connected to one end of the telescopic rod (53), and the other end of the telescopic rod (53) being mounted on the second connecting member (54).

5. The hydro-turbine unit partial discharge detection device according to claim 4, characterized in that: The locking structure (6) further comprises a locking member (6), the locking structure (6) comprising a limiting member (61) and a clamping member (62), the limiting member (61) being fixed at the edge of the opening, the clamping member (62) being fixed on the outer wall of the cover shell (21), a limiting groove being arranged at the bottom of the limiting member (61), a clamping rod being mounted on the clamping member (62), and the clamping rod being adapted to the limiting groove.

6. The partial discharge detection device for a water turbine unit according to claim 1, characterized in that: The supporting assembly (3) comprises a positioning plate (31), a supporting member (32) and a lifting seat fixed to the inner bottom of the box body (1); the positioning plate (31) is detachably fixed to the top of the lifting seat; a rotating shaft is rotatably mounted on one side of the positioning plate (31); one end of the supporting member (32) is fixedly connected to the rotating shaft and is used to support and install the instrument body (4).

7. The partial discharge detection device for a water turbine unit according to claim 6, characterized in that: The supporting assembly (3) further comprises a locking column (33) located on the other side of the positioning plate (31), and a hook is provided on the top of the locking column (33), and the hook is used to limit and fix the other end of the supporting member (32).

8. The hydro-turbine unit partial discharge detection device according to claim 6, characterized in that: The positioning plate (31) is provided with a plurality of first heat exhaust holes; the inner bottom of the box body (1) is provided with a plurality of second heat exhaust holes; the number of the first heat exhaust holes is the same as the number of the second heat exhaust holes and corresponds one to one.

9. The partial discharge detection device for a water turbine unit according to claim 3, characterized in that: The heat dissipation structure comprises a radiator (7) fixedly mounted on the inner wall of the protective barrier (22); a liquid cooling plate (211) is laid on the inner top wall of the housing (21); and a pipe groove is provided on the inner wall of the liquid cooling plate (211).

10. The partial discharge detection device for a water turbine unit according to claim 9, characterized in that: A copper tube (8) is fixedly connected to the inner wall of the tube groove, a water outlet (9) is provided at one end of the copper tube (8), and a water inlet (10) is provided at the other end of the copper tube (8).

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