Anti-interference pilot frequency dielectric loss tester

Abstract

The utility model discloses an anti-interference pilot frequency dielectric loss tester which comprises a tester box body, the top of the tester box body is provided with a box cover, two sides of the outer wall of the tester box body are fixedly connected with handles, four corners of the tester box body are respectively provided with a protection mechanism, and each protection mechanism comprises an equipment cylinder and a rubber shell. The side, close to the handle, of the equipment cylinder and the side, close to the handle, of the tester box body are jointly and fixedly connected with an outer protection plate, a base is arranged at the bottom of the equipment cylinder, a top cover is arranged at the top of the equipment cylinder, a shaft seat is fixedly connected to the inner wall of the equipment cylinder, and an adjusting lead screw is connected to the interior of the shaft seat through a bearing. According to the anti-interference pilot-frequency dielectric loss tester, the protection mechanism and the tester box body are matched with each other, so that the protection capability of the anti-interference pilot-frequency dielectric loss tester is improved, the damage to internal components of the tester box body is greatly reduced in the moving process of the tester box body, the service life of the tester is prolonged, and the use effect of the tester is ensured to be stable.

Description

Technical Field

[0001] The utility model relates to the technical field of heterofrequency dielectric loss testers, in particular to an anti-interference heterofrequency dielectric loss tester. Background Art

[0002] The frequency-variable fully automatic dielectric loss tester is a high-precision test instrument for testing the dielectric loss tangent and capacitance of various high-voltage power equipment on-site or in laboratories such as power plants and substations. The instrument is an integrated structure with a built-in dielectric loss test bridge, variable frequency voltage regulator, step-up transformer and SF6 high-stability standard capacitor. The test high voltage source is generated by the inverter inside the instrument and is used for testing the test product after being stepped up by the transformer.

[0003] Most of the existing anti-interference heterodyne dielectric loss testers are installed in a box for use. The operation panel is used to perform multi-channel test plug-in, grounding, self-excitation method test CVT dielectric loss, high-voltage output, and provide printing operation buttons. However, during use, due to the wide range of environments in which the tester is used, it is often switched between outdoor power stations and laboratories. Therefore, during the movement, the box will be bumped and its corners will often be bumped. When it is bumped and bumped for a long time, the sudden impact force generated by the bumps can easily cause strong vibrations in the electronic components in the box, and then the connections between the components can be loosened over time, which can seriously cause the equipment to short-circuit, thus affecting the use effect. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0006] An anti-interference heterodyne dielectric loss tester comprises a tester box, a box cover is arranged on the top of the tester box, handles are fixedly connected to both sides of the outer wall of the tester box, and protective mechanisms are arranged at the four corners of the tester box;

[0007] The protective mechanism includes an equipment tube and a plastic shell, wherein the equipment tube and a side of the tester box close to the handle are jointly fixedly connected with an outer protective plate, a base is arranged at the bottom of the equipment tube, a top cover is arranged at the top of the equipment tube, an inner wall of the equipment tube is fixedly connected with an axle seat, an adjusting screw is connected with an internal bearing of the axle seat, an outer wall of the adjusting screw is threadedly connected with a sleeve frame, a self-locking universal wheel is arranged at the bottom of the sleeve frame, and a spring shock absorber is jointly fixedly connected between the top of the self-locking universal wheel and the bottom of the sleeve frame.

[0008] As a preferred solution of the anti-interference heterodyne dielectric loss tester described in the utility model, the cross-section of the plastic shell is L-shaped, and the edge of the outer wall of the plastic shell is flush with the outer edge of the equipment tube and the outer protective plate, which is convenient for protecting the box cover and its surrounding corners of the tester box. At the same time, the flush design makes the appearance more flat and beautiful.

[0009] As a preferred solution of the anti-interference heterodyne dielectric loss tester described in the utility model, slide grooves are provided on both sides of the inner wall at the bottom of the equipment tube, and the base is slidably connected to the slide grooves, so that the base can be pulled out of the equipment tube to open the equipment tube, thereby facilitating the ejection of the wheel group in the equipment tube.

[0010] As a preferred solution of the anti-interference heterofrequency dielectric loss tester described in the utility model, a buffer pad is fixedly connected to the bottom of the base, and the buffer pad is made of wear-resistant rubber material. When placed on a desktop or the ground, it is convenient to play a buffering role and has certain anti-slip performance.

[0011] As a preferred solution of the anti-interference heterofrequency dielectric loss tester described in the utility model, a paddle is fixedly connected to the center of the top of the adjusting screw rod, which is convenient for the staff to twist the paddle and then drive the adjusting screw rod to rotate. An anti-slip pad is fixedly connected to the bottom of the top cover, and the bottom of the anti-slip pad fits tightly with the top of the paddle, so that it is convenient to tightly press against the top of the paddle to locate its position.

[0012] As a preferred solution of the anti-interference heterodyne dielectric loss tester described in the utility model, the outer wall of the sleeve frame is slidably connected to the inner wall of the equipment tube, and the bottom of the self-locking universal wheel corresponds to the bottom outlet of the equipment tube, which facilitates the flexible extension and retraction of the self-locking universal wheel into the equipment tube.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model facilitates to improve the protection capability of the anti-interference heterofrequency dielectric loss tester by the cooperation between the protection mechanism and the tester box, greatly reduces the damage to the internal components of the tester box during the movement of the tester box, facilitates to extend the service life of the tester, and ensures the stable use effect of the tester. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0016] Figure 1 It is a three-dimensional diagram of the utility model anti-interference heterodyne dielectric loss tester;

[0017] Figure 2 This is a schematic diagram of the protection mechanism structure of the utility model anti-interference heterodyne dielectric loss tester;

[0018] Figure 3 The utility model is a schematic diagram of the internal structure of the equipment tube of the anti-interference heterofrequency dielectric loss tester.

[0019] Legend: 1. Tester box; 2. Box cover; 3. Handle; 4. Protective mechanism; 5. Equipment tube; 6. Rubber shell; 7. Outer protective plate; 8. Base; 9. Buffer pad; 10. Top cover; 11. Shaft seat; 12. Adjusting screw; 13. Paddle; 14. Sleeve holder; 15. Self-locking universal wheel; 16. Spring shock absorber. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0021] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0022] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] See also Figure 1-3 The utility model provides an anti-interference heterodyne dielectric loss tester, including a tester box 1, a box cover 2 is arranged on the top of the tester box 1, handles 3 are fixedly connected to both sides of the outer wall of the tester box 1, and protective mechanisms 4 are arranged at the four corners of the tester box 1.

[0024] The protection mechanism 4 includes an equipment tube 5 and a plastic shell 6. The equipment tube 5 and the tester box 1 are fixedly connected with an outer protective plate 7 on one side close to the handle 3. The cross section of the plastic shell 6 is L-shaped. The edge of the outer wall of the plastic shell 6 is flush with the outer edges of the equipment tube 5 and the outer protective plate 7, which is convenient for protecting the box cover 2 of the tester box 1 and its surrounding corners. At the same time, the flush design makes the appearance more flat and beautiful.

[0025] A base 8 is provided at the bottom of the equipment tube 5. Slide grooves are provided on both sides of the inner wall at the bottom of the equipment tube 5. The base 8 is slidably connected to the slide grooves. The base 8 can be pulled out of the equipment tube 5 to open the equipment tube 5, thereby facilitating the ejection of the wheel set in the equipment tube 5.

[0026] At the same time, when the tester does not need to be moved, the base 8 is located at the bottom of the equipment tube 5 to facilitate its support, and a buffer pad 9 is fixedly connected to the bottom of the base 8. The buffer pad 9 is made of wear-resistant rubber material. When placed on a desktop or on the ground, it is convenient to play a buffering role and has certain anti-slip properties.

[0027] A top cover 10 is provided on the top of the equipment tube 5, and a shaft seat 11 is fixedly connected to the inner wall of the equipment tube 5. An adjusting screw 12 is connected to the bearing inside the shaft seat 11, and a paddle 13 is fixedly connected to the top center of the adjusting screw 12, so that the staff can turn the paddle 13 to drive the adjusting screw 12 to rotate. An anti-skid pad is fixedly connected to the bottom of the top cover 10, and the bottom of the anti-skid pad fits tightly with the top of the paddle 13, so that it can be tightly pressed against the top of the paddle 13 to locate its position.

[0028] The outer wall of the adjusting screw rod 12 is threadedly connected to a sleeve frame 14, and a self-locking universal wheel 15 is arranged at the bottom of the sleeve frame 14. A spring shock absorber 16 is fixedly connected between the top of the self-locking universal wheel 15 and the bottom of the sleeve frame 14. The outer wall of the sleeve frame 14 is slidably connected to the inner wall of the equipment tube 5, and the bottom of the self-locking universal wheel 15 corresponds to the bottom exit of the equipment tube 5, so as to facilitate the flexible extension and retraction of the self-locking universal wheel 15 into the equipment tube 5.

[0029] When the tester case 1 is moved, the base 8 at the bottom of the four equipment tubes 5 can be pulled out. At this time, under the elastic force of the spring shock absorber 16, after the base 8 is lost, the self-locking universal wheel 15 can immediately pop out from the equipment tube 5, and then during transportation, it replaces the base 8 to support the tester case 1. At the same time, the self-locking universal wheel 15 can roll, which is convenient for the staff to move the tester. When encountering bumps on the road, multiple spring shock absorbers 16 can be used to buffer the bumps, etc., so as to reduce the intensity of the impact force and reduce the damage to the connection of components.

[0030] The extension distance of the self-locking universal wheel 15 can be adjusted. When the road condition is bad, the extension distance of the self-locking universal wheel 15 can be increased to prevent the box from touching the ground due to bumps. When adjusting, the box cover 2 needs to be opened, the top cover 10 is pulled out, and the paddle 13 is rotated to drive the adjusting screw rod 12 to rotate, thereby driving the sleeve frame 14 to rise and fall in the equipment cylinder 5, so as to adjust the extension distance of the self-locking universal wheel 15.

[0031] When the outer corner of the box body is hit, the impact force can be effectively buffered because the plastic shell 6 and the outer protective plate 7 are arranged outside the equipment tube 5 and at the corner of the box cover 2.

[0032] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An anti-interference heterodyne dielectric loss tester, comprising a tester housing (1), characterized in that: The top of the tester box (1) is provided with a box cover (2), both sides of the outer wall of the tester box (1) are fixedly connected with handles (3), and the four corners of the tester box (1) are provided with protective mechanisms (4); The protective mechanism (4) comprises a device tube (5) and a plastic shell (6); the device tube (5) and a side of the tester box (1) close to the handle (3) are fixedly connected to an outer protective plate (7); a base (8) is arranged at the bottom of the device tube (5); a top cover (10) is arranged at the top of the device tube (5); an axle seat (11) is fixedly connected to the inner wall of the device tube (5); an adjusting screw rod (12) is connected to the internal bearing of the axle seat (11); a sleeve frame (14) is threadedly connected to the outer wall of the adjusting screw rod (12); a self-locking universal wheel (15) is arranged at the bottom of the sleeve frame (14); a spring shock absorber (16) is fixedly connected between the top of the self-locking universal wheel (15) and the bottom of the sleeve frame (14).

2. The anti-interference frequency dielectric loss tester according to claim 1, characterized in that: The cross section of the plastic shell (6) is L-shaped, and the edge of the outer wall of the plastic shell (6) is flush with the outer edges of the equipment tube (5) and the outer protective plate (7).

3. The anti-interference heterodyne dielectric loss tester according to claim 1, characterized in that: Slide grooves are provided on both sides of the inner wall at the bottom of the equipment cylinder (5), and the base (8) is slidably connected to the slide grooves.

4. The anti-interference heterodyne dielectric loss tester according to claim 1, characterized in that: A buffer pad (9) is fixedly connected to the bottom of the base (8), and the buffer pad (9) is made of wear-resistant rubber material.

5. The anti-interference frequency dielectric loss tester according to claim 1, characterized in that: A paddle (13) is fixedly connected to the center of the top of the adjusting screw rod (12), and an anti-skid pad is fixedly connected to the bottom of the top cover (10), and the bottom of the anti-skid pad is tightly fitted to the top of the paddle (13).

6. The anti-interference heterodyne dielectric loss tester according to claim 1, characterized in that: The outer wall of the sleeve frame (14) is slidably connected to the inner wall of the equipment cylinder (5), and the bottom of the self-locking universal wheel (15) corresponds to the bottom outlet of the equipment cylinder (5).

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