Electricity testing device for switch cabinet

Abstract

The invention discloses a switch cabinet electricity testing device, which comprises a contact type electroscope and a support frame, and also comprises a lifting assembly arranged on the support frame; the sliding cylinder is horizontally arranged; the piston assembly is arranged in the sliding barrel in a matched mode, and the piston assembly can move in the axis direction of the sliding barrel; the elastic containing piece is arranged in the piston assembly in a matched mode; the air guide plate is arranged at one end of the sliding cylinder; the air guide assembly is arranged on the air guide plate, and the air guide assembly is used for being connected with an external pressure air source; the elastic piece is arranged between the piston assembly and the air guide plate; the pressure relief pipe is connected with the sliding barrel, and a valve is arranged on the pressure relief pipe; wherein the lifting assembly is used for driving the air guide plate to move up and down; according to the invention, shaking of the electricity testing probe can be reduced, so that accuracy and reliability of an electricity testing result are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch cabinet, in particular to a switch cabinet electricity testing device. BACKGROUND

[0002] The high-voltage switch cabinet is used for controlling, protecting and isolating electrical equipment in the power system, and is usually subjected to electricity testing operation by an electricity testing device to ensure that the maintenance personnel work in a safe and non-electric state. The existing electricity testing device usually adopts a contact-type electricity tester, and a hydraulic cylinder or an electric telescopic rod is usually used to drive the movement of the electricity tester to approach the static contact. In the movement process of the electricity tester, the electricity testing probe of the electricity tester is prone to shaking, thereby causing the unreliable contact between the electricity testing probe and the static contact, and affecting the accuracy and reliability of the electricity testing result. SUMMARY

[0003] In view of the above technical deficiencies, the purpose of the present application is to provide a switch cabinet electricity testing device to ensure the accuracy and reliability of the electricity testing result.

[0004] To solve the above technical problems, the present application adopts the following technical scheme: the present application provides a switch cabinet electricity testing device, which comprises a contact-type electricity tester and a support frame, and further comprises: a lifting assembly arranged on the support frame; a sliding cylinder arranged horizontally; a piston assembly arranged in the interior of the sliding cylinder and movable along the axial direction of the sliding cylinder; an elastic accommodating member arranged in the interior of the piston assembly; a gas guide plate arranged at one end of the sliding cylinder; a gas guide assembly arranged on the gas guide plate and connected to an external pressure gas source; an elastic member arranged between the piston assembly and the gas guide plate; and a pressure relief pipe connected to the sliding cylinder and provided with a valve.

[0005] Further, the piston assembly comprises: a piston head provided with a circular annular groove extending to one end of the piston assembly close to the gas guide plate, and the inner annular surface of the circular annular groove is provided with a taper; and a sleeve arranged in the interior of the circular annular groove.

[0006] Further, the piston assembly further comprises a sliding ring coaxially arranged at one end of the piston head adjacent to the gas guide plate and arranged in the interior of the sliding cylinder.

[0007] Further, the elastic member comprises a conical spring arranged on the outer portion of the inner annular surface of the circular annular groove, and the two ends of the conical spring are fixedly connected to the sleeve and the gas guide plate, respectively.

[0008] Further, the piston head is provided with a clamping groove, and the elastic accommodating member is matched and arranged in the clamping groove; and the circular annular groove is located outside the clamping groove and extends to the other end of the piston head.

[0009] Further, the elastic accommodating member comprises an accommodating cylinder, which is matched with a part of the contact-type electroscope; a plurality of compression strips are arranged at one end of the accommodating cylinder, and the plurality of compression strips are uniformly distributed along the axis of the accommodating cylinder, and each compression strip is used for contacting the contact-type electroscope; and a guide strip is arranged at the end of each compression strip away from the accommodating cylinder.

[0010] Further, the elastic accommodating member further comprises a stopper, which is arranged inside the accommodating cylinder and contacts the contact-type electroscope.

[0011] Further, a plurality of exhaust holes are arranged on the air guide plate, the plurality of exhaust holes are uniformly distributed along the axis of the sliding cylinder, and each exhaust hole penetrates to the end of the air guide plate adjacent to the piston assembly; and the air guide plate is internally provided with an air guide cavity, and each exhaust hole is communicated with the air guide cavity.

[0012] Further, the air guide assembly comprises a gas joint, which is arranged on the air guide plate, is communicated with the air guide cavity, and is used for connecting an external pressure gas source.

[0013] Further, the lifting assembly comprises a linear module, which is arranged on the support frame, and the air guide plate is arranged on the linear module, and the linear module is used for driving the air guide plate to move up and down.

[0014] The beneficial effects of the present application are as follows.

[0015] 1. The present application is applied in the manufacturing of power distribution switch control equipment; the piston head is driven to move along the sliding cylinder by introducing pressure airflow, the elastic accommodating member is matched in the piston head, and the contact-type electroscope is matched with the elastic accommodating member, so that the shaking of the electric detection probe of the contact-type electroscope is reduced during the movement of the contact-type electroscope, the static contact of the electric detection probe and the electric equipment is reliably contacted, and the accuracy and reliability of the electric detection result are ensured.

[0016] 2. During the introduction of the airflow, the piston head can generate a pressure effect on the elastic accommodating member; and the tapered spring can generate a squeezing effect on the piston head and further generate a pressure effect on the elastic accommodating member by pulling the rope, so that the fixing effect on the contact-type electroscope is improved during the movement of the contact-type electroscope.

[0017] 3. The contact-type electroscope is detachable by matching the contact-type electroscope with the elastic accommodating member; and the contact-type electroscope is convenient to disassemble and store when the electric detection is not performed. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some of the embodiments of the present application, and all of the other drawings can be obtained by those of ordinary skill in the art without any creative effort based on these drawings.

[0019] Figure 1 It is a schematic view of the overall structure of the present application.

[0020] Figure 2 It is another schematic view of the overall structure of the present application.

[0021] Figure 3 It is a schematic view of the partial structure of the present application.

[0022] Figure 4 It is a schematic view of the piston head of the present application.

[0023] Figure 5 It is a schematic view of the elastic accommodating member structure of the present application.

[0024] Figure 6 It is a schematic view of the cooperation of the conical spring, sleeve and piston head of the present application.

[0025] Figure 7 It is a schematic view of the air guide plate structure of the present application.

[0026] The reference signs are explained as follows: 1, support frame; 11, universal wheel; 2, lifting assembly; 21, linear module; 3, sliding cylinder; 31, pressure relief pipe; 4, contact type electroscope; 5, air guide assembly; 51, gas joint; 6, air guide plate; 61, air guide cavity; 62, exhaust hole; 7, piston assembly; 71, piston head; 711, circular annular groove; 712, clamping groove; 72, slip ring; 73, sleeve; 8, elastic accommodating member; 81, accommodating cylinder; 82, compression strip; 83, guide strip; 84, stop block; 9, elastic member; 91, conical spring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, and all of the other embodiments can be obtained by those of ordinary skill in the art without any creative effort based on these drawings.

[0028] Embodiment one As Figures 1 to 7As shown, the present application provides a switch cabinet electricity testing device, which comprises a support frame 1, the bottom of the support frame 1 is uniformly provided with a plurality of universal wheels 11, so that the support frame 1 is convenient to move; a lifting assembly 2 is arranged on the support frame 1, a sliding cylinder 3 is arranged on the lifting assembly 2, the lifting assembly 2 is used to drive the sliding cylinder 3 to move up and down; the sliding cylinder 3 is horizontally arranged, that is, the axis of the sliding cylinder 3 is horizontally arranged; a piston assembly 7 is matched and arranged in the inside of the sliding cylinder 3, the piston assembly 7 can move along the axis direction of the sliding cylinder 3; an elastic accommodating member 8 is matched and arranged in the inside of the piston assembly 7, the elastic accommodating member 8 is used to fix a contact electricity tester 4; the contact electricity tester 4 adopts the prior art, which comprises a shell, the shell is directly connected with a cylindrical handle (without a telescopic rod), the shell is provided with an electricity testing probe, and the shell is also provided with a circuit, an audible and visual assembly and the like; the handle of the contact electricity tester 4 is used to cooperate with the elastic accommodating member 8, when the contact electricity tester 4 cooperates with the elastic accommodating member 8, the shell and the electricity testing probe of the contact electricity tester 4 are all extended out of the sliding cylinder 3.

[0029] A gas guide plate 6 is sealingly connected to one end of the sliding cylinder 3, the inside of the gas guide plate 6 is provided with a gas guide cavity 61, a plurality of exhaust holes 62 are arranged on the gas guide plate 6, each exhaust hole 62 penetrates to one end of the gas guide plate 6 adjacent to the piston assembly 7, so that the exhaust holes 62 are communicated with the inside of the sliding cylinder 3; a gas guide assembly 5 is arranged on the gas guide plate 6, the gas guide assembly 5 is used to connect an external pressure gas source; the pressure gas flow is introduced into the inside of the gas guide cavity 61 through the external pressure gas source, and then the pressure gas flow is introduced into the cavity formed by the piston assembly 7, the gas guide plate 6 and the sliding cylinder 3 through the exhaust holes 62, so as to drive the piston assembly 7 to move along the axis direction of the sliding cylinder 3; in order to avoid the piston assembly 7 from moving out of the sliding cylinder 3, a limiting block or a limiting ring and the like structure can be arranged on the end of the sliding cylinder 3 which is not connected with the gas guide plate 6 to block.

[0030] An elastic member 9 is arranged between the piston assembly 7 and the gas guide plate 6, and a pressure relief pipe 31 is connected to the sliding cylinder 3, and a valve is arranged on the pressure relief pipe 31.

[0031] The piston assembly 7 comprises a piston head 71 matched in the inside of the sliding cylinder 3, the piston head 71 adopts an elastic material, such as rubber or silica gel and the like elastic material; a circular ring-shaped groove 711 is coaxially arranged on the piston head 71, the circular ring-shaped groove 711 penetrates one end of the piston head 71 adjacent to the gas guide plate 6, the circular ring-shaped groove 711 has two circumferential surfaces, that is, an inner ring surface and an outer ring surface, the inner ring surface of the circular ring-shaped groove 711 is provided with a taper, the diameter of the inner ring surface of the circular ring-shaped groove 711 gradually increases from one end of the sliding cylinder 3 adjacent to the gas guide plate 6 to the other end of the sliding cylinder 3; when the piston head 71 is in a normal state without deformation, the circular ring-shaped groove 711 is coaxial with the sliding cylinder 3, the plurality of exhaust holes 62 on the gas guide plate 6 are uniformly distributed along the axis of the sliding cylinder 3, and each exhaust hole 62 corresponds to the circular ring-shaped groove 711.

[0032] A sleeve 73 is arranged inside the circular groove 711, and the sleeve 73 is arranged on the outer ring surface of the circular groove 711 and the annular inner wall of the circular groove 711 (as shown in the left inner wall of the circular groove 711). Figure 3 The sleeve 73 is a thin-walled structure, and the sleeve 73 is made of a material that is not easy to deform, such as metal or composite material.

[0033] The piston assembly 7 further comprises a sliding ring 72 coaxially arranged at one end of the piston head 71 adjacent to the air guide plate 6, and the sliding ring 72 is fixedly connected with the piston head 71, and the sliding ring 72 is arranged inside the sliding cylinder 3 and can move along the axis of the sliding cylinder 3.

[0034] The elastic member 9 is a conical spring 91, and a part of the conical spring 91 is arranged outside the inner ring surface of the circular groove 711, one end of the conical spring 91 is fixedly connected with the sleeve 73, and the other end of the conical sleeve 73 is fixedly connected with the air guide plate 6.

[0035] The elastic accommodating member 8 comprises an accommodating cylinder 81, and a stopper 84 is arranged inside the accommodating cylinder 81, and the stopper 84 is made of a material that is not easy to deform; one end of the accommodating cylinder 81 is in a closed structure, and the other end of the accommodating cylinder 81 is provided with a plurality of pressing strips 82; each pressing strip 82 is provided with a guide strip 83 at the end away from the accommodating cylinder 81, the guide strip 83 is provided with a taper, and the connection between the guide strip 83 and the pressing strip 82 is provided with a circular arc transition; the accommodating cylinder 81, the pressing strip 82 and the guide strip 83 are integrally formed, and are made of polyethylene material, so as to have good elasticity; the cross section of the pressing strip 82 is in an arc structure, when the accommodating cylinder 81, the pressing strip 82 and the guide strip 83 are not deformed as a whole, the accommodating cylinder 81 is matched with the handle of the contact-type electroscope 4, the accommodating cylinder 81 is coaxial with the sliding cylinder 3, and the plurality of pressing strips 82 are uniformly distributed along the circumferential direction of the accommodating cylinder 81, at this time, the plurality of pressing strips 82 are in interference fit with the handle of the contact-type electroscope 4; when the handle of the contact-type electroscope is arranged in the accommodating cylinder 81 and contacts the stopper 84, the pressing strip 82 contacts and presses the handle of the contact-type electroscope 4, so as to fix the contact-type electroscope 4, and the end of the guide strip 83 away from the pressing strip 82 does not contact the handle of the contact-type electroscope 4, and the guide strip 83 facilitates the insertion of the handle of the contact-type electroscope 4 between the pressing strips 82.

[0036] A clamping groove 712 is arranged in the middle of the piston head 71, the clamping groove 712 penetrates to the other end of the piston head 71, and the elastic accommodating member 8 is arranged in the clamping groove 712; specifically, the accommodating cylinder 81, the pressing strip 82 and the guide strip 83 are arranged in the clamping groove 712, the accommodating cylinder 81 is fixedly connected with the piston head 71 by adhesive or the like, and the pressing strip 82 and the guide strip 83 are arranged in the clamping groove 712 without fixed connection.

[0037] In the present embodiment, the contact-type electroscope 4 is fixed by fitting the handle end of the contact-type electroscope 4 inside the accommodating cylinder 81 and in contact with the stopper 84, so that the compression strip 82 contacts and compresses the handle of the contact-type electroscope 4, thereby facilitating fitting of the contact-type electroscope 4 on the elastic accommodating member 8; then, by moving the support frame 1 and adjusting the position of the sliding cylinder 3 through the lifting assembly 2, the electroscope probe of the contact-type electroscope 4 is moved to correspond to the static contact of the switch cabinet electrical equipment; then, the valve on the pressure relief pipe 31 is in a closed state, and the pressure gas source is introduced to the air guide plate 6 through the air guide assembly 5, and the pressure gas flow is discharged through the air outlet hole 62 towards the annular groove 711; as the gas pressure increases, the piston head 71 can move slowly away from the air guide plate 6 (this can be achieved by controlling the gas flow and pressure of the external pressure gas source introduced into the air guide cavity 61, which is not described in detail as it is prior art) by overcoming various resistances (including the friction between the piston head 71 and the sliding cylinder 3, the friction between the sliding ring 72 and the sliding cylinder 3, the tension of the conical spring 91, the atmospheric pressure on the other end of the piston head 71, etc.), the conical spring 91 is stretched, and at the same time, the electroscope probe of the contact-type electroscope 4 is moved until the electroscope probe contacts the static contact of the electrical equipment; at this time, the external pressure gas source stops introducing gas flow to the air guide plate 6 in time, thereby achieving the function of electroscope; finally, the valve on the pressure relief pipe 31 is opened to exhaust, and the conical spring 91 retracts and pulls the piston head 71 to move.

[0038] The piston head 71 is driven to move slowly by increasing the gas pressure, and the overall length of the piston head 71 is relatively long; during the introduction of the gas flow, the pressure gas flow exerts a pressure on the inner surface of the annular groove 711; since the piston head 71 is made of elastic material, it is convenient to cause the piston head 71 to exert a pressure on the elastic accommodating member 8, and as the conical spring 91 is stretched, the part of the conical spring 91 fitted in the inner surface of the annular groove 711 will contract, thereby exerting a squeezing action on the piston head 71 and further exerting a pressure on the elastic accommodating member 8, thereby achieving the effect of improving the compression of the contact-type electroscope 4 during movement; the sleeve 73 and the sliding ring 72 are provided, which helps to reduce the pressure of the gas flow on the part of the piston head 71 close to the outer surface, and the elasticity of the piston head 71 and the compression strip 82 facilitates the stability of the movement of the piston head 71 and the contact-type electroscope 4, reduces the shaking of the electroscope probe, thereby ensuring reliable contact between the electroscope probe and the static contact of the electrical equipment, avoiding intermittent disconnection between the electroscope probe and the static contact of the electrical equipment due to shaking, i.e. avoiding false judgment, and ensuring the accuracy and reliability of the electroscope result.

[0039] In addition, by fitting the contact-type electroscope 4 with the elastic accommodating member 8, the contact-type electroscope 4 can be easily removed after the electroscope is finished, and the contact-type electroscope 4 can be easily removed for storage when not in use.

[0040] Embodiment Two As shown in Figure 2 and Figure 3 , this embodiment is based on embodiment one, the gas guide assembly 5 includes a gas joint 51, the gas joint 51 is fixedly arranged on the gas guide plate 6, one end of the gas joint 51 penetrates the gas guide plate 6 and communicates with the gas guide cavity 61, the other end of the gas joint 51 is used for connecting an external pressure gas source.

[0041] Embodiment Three As shown in Figure 1 and Figure 2 , this embodiment is based on embodiment two, the lifting assembly 2 adopts a linear module 21, the linear module 21 is vertically installed on the support frame 1, the sliding block (or sliding table) of the linear module 21 is fixedly connected with the gas guide plate 6, so as to drive the gas guide plate 6 to move up and down, further realizing the adjustment of the height of the sliding cylinder 3 and the piston head 71; of course, the lifting assembly 2 can also adopt a hydraulic rod, an electric telescopic rod and the like, which can also realize the adjustment of the height of the sliding cylinder 3 and the piston head 71.

[0042] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies thereof, the present application also intends to include these modifications and variations.

Claims

1. A switchgear electricity testing device comprising a contact electricity tester (4) and a support frame (1), characterized in that, Also include: Lifting assembly (2), lifting assembly (2) is arranged on the support frame (1); Slide cylinder (3), slide cylinder (3) is arranged horizontally; Piston assembly (7), piston assembly (7) is arranged in the inside of slide cylinder (3), piston assembly (7) can move along the axis direction of slide cylinder (3); Elastic containing piece (8), elastic containing piece (8) is arranged in the inside of piston assembly (7); Air guide plate (6), air guide plate (6) is arranged at one end of slide cylinder (3); Air guide assembly (5), air guide assembly (5) is arranged on air guide plate (6), and air guide assembly (5) is used for connecting external pressure gas source; Elastic piece (9), elastic piece (9) is arranged between piston assembly (7) and air guide plate (6); Pressure relief pipe (31), pressure relief pipe (31) is connected with slide cylinder (3), and valve is arranged on pressure relief pipe (31); Wherein, lifting assembly (2) is used for driving air guide plate (6) to move up and down; Contact type electroscope (4) is used for being arranged in the inside of elastic containing piece (8), and contact type electroscope (4) penetrates slide cylinder (3).

2. The switchgear electricity testing device according to claim 1, characterized in that, Piston assembly (7) includes: Piston head (71), piston head (71) is provided with circular annular groove (711), circular annular groove (711) extends to one end of piston assembly (7) close to air guide plate (6), and the inner ring surface of circular annular groove (711) is provided with taper; Sleeve (73), sleeve (73) is arranged in the inside of circular annular groove (711); Wherein, elastic piece (9) is arranged on the inner ring surface of circular annular groove (711).

3. The switchgear electricity testing device according to claim 2, characterized in that, Piston assembly (7) further includes sliding ring (72), sliding ring (72) is coaxially arranged at one end of piston head (71) adjacent to air guide plate (6), and sliding ring (72) is arranged in the inside of slide cylinder (3).

4. The switchgear electricity testing device according to claim 2, characterized in that, Elastic piece (9) includes conical spring (91), conical spring (91) is arranged on the outer part of the inner ring surface of circular annular groove (711), and the two ends of conical spring (91) are fixedly connected with sleeve (73) and air guide plate (6) respectively.

5. The switchgear electricity testing device according to claim 2, wherein, Piston head (71) is provided with clamping groove (712), and elastic containing piece (8) is arranged in clamping groove (712); Circular annular groove (711) is located outside clamping groove (712), and circular annular groove (711) extends to the other end of piston head (71).

6. A switchgear electricity testing device according to claim 5, wherein Elastic containing piece (8) includes: Containing cylinder (81), containing cylinder (81) is adapted to a part of contact type electroscope (4); Compression strip (82), one end of containing cylinder (81) is provided with a plurality of compression strips (82), the plurality of compression strips (82) are evenly distributed along the axis circumference of containing cylinder (81), and each compression strip (82) is used for contacting contact type electroscope (4); Guide strip (83), each compression strip (82) is provided with guide strip (83) away from one end of containing cylinder (81).

7. A switchgear electricity testing device according to claim 6, wherein Elastic containing piece (8) further includes stop block (84), stop block (84) is arranged in the inside of containing cylinder (81), and stop block (84) contacts contact type electroscope (4).

8. The switchgear electricity testing device according to claim 2, characterized in that, A plurality of exhaust holes (62) are arranged on the air guide plate (6), and the plurality of exhaust holes (62) are circumferentially and uniformly distributed along the axis of the sliding cylinder (3); the exhaust holes (62) correspond to the annular grooves (711), and each exhaust hole (62) penetrates to one end of the air guide plate (6) adjacent to the piston assembly (7); An air guide cavity (61) is arranged in the air guide plate (6), and each exhaust hole (62) is communicated with the air guide cavity (61).

9. A switchgear electricity testing device according to claim 8, characterized in that The air guide assembly (5) comprises a gas joint (51), the gas joint (51) is arranged on the air guide plate (6), the gas joint (51) is communicated with the air guide cavity (61), and the gas joint (51) is used for connecting an external pressure gas source.

10. The switchgear electricity testing device according to claim 1, characterized in that, The lifting assembly (2) comprises a linear module (21), the linear module (21) is arranged on the support frame (1), the air guide plate (6) is arranged on the linear module (21), and the linear module (21) is used for driving the air guide plate (6) to move up and down.

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