Paper tube oil injection device for transformer

Abstract

The utility model relates to the technical field of paper tubes for transformers, in particular to an oil injection device for a paper tube for a transformer, which comprises an oil injection tank, an oil injection pipe, a first oil injection pipe and a second oil injection pipe. The bearing piece is arranged corresponding to the through hole, is arranged on the lifting mechanism and is used for bearing the straight barrel; the lifting mechanism is used for driving the bearing piece to move up and down; the first spray head assembly is arranged in the oil spraying box and correspondingly arranged on the inner side of the bearing piece; the second spray head assemblies are arranged in the oil spraying box and correspondingly arranged on the outer side of the bearing piece; and the hydraulic mechanism communicates with the first spray head assembly and the second spray head assemblies and is used for supplying oil to the first spray head assembly and the second spray head assemblies. The paper tube oil injection device for the transformer aims at solving the problems that in the prior art, oil injection of a paper tube is not uniform, and the oil usage amount is large.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of paper tube for transformer, and more specifically, relates to a paper tube oil injection device for transformer 。 BACKGROUND

[0002] The transformer is usually provided with an insulating paper tube for internal insulation of the transformer, to prevent discharge in the transformer and ensure stable axial dimension of the coil in the transformer. The hydraulic oil and the insulating paper tube are used as main insulating materials in the transformer, by virtue of the small difference in dielectric coefficients of the two materials.

[0003] However, the insulating paper tube for transformer is prone to moisture after forming, so the dry paper tube needs to be treated by oil injection. The existing technology has the following problems in the process of paper tube oil injection: 1. Uneven oil injection on the surface of the paper tube, which is prone to moisture in some areas; 2. Large amount of oil used in the process of paper tube oil injection, resulting in waste. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a paper tube oil injection device for transformer, which aims to solve the problems of uneven oil injection and large amount of oil used in the prior art.

[0005] In order to solve the above technical problems, a paper tube oil injection device for transformer is provided, which comprises: an oil injection tank, which is hollow and provided with a through hole on the bottom surface;

[0006] A supporting member is provided corresponding to the through hole and is arranged on a lifting mechanism to support the straight tube;

[0007] The lifting mechanism is used to drive the supporting member to move up and down;

[0008] A first nozzle assembly is arranged in the oil injection tank and corresponds to the inner side of the supporting member;

[0009] A plurality of second nozzle assemblies are arranged in the oil injection tank and correspond to the outer side of the supporting member;

[0010] A hydraulic mechanism is in communication with the first nozzle assembly and each second nozzle assembly to supply oil to the first nozzle assembly and each second nozzle assembly.

[0011] In any of the above technical solutions, further, the top surface of the supporting member is provided with a guide groove, and the guide groove is used for the oil sprayed by the first nozzle assembly to flow outward;

[0012] The inner bottom surface of the oil injection tank is provided as an inclined surface inclined outward along the through hole, and the bottom surface of the oil injection tank is provided with a guide hole for collecting oil in the tank, and the guide hole is in communication with the oil storage tank of the hydraulic mechanism.

[0013] In any of the above technical solutions, further comprising:

[0014] Adjusting mechanism;

[0015] The supporting part is provided with a supporting portion and a sliding portion, and the outer diameter of the sliding portion is smaller than the inner diameter of the paper tube;

[0016] The top surface of the supporting portion is provided with a receiving groove, the depth of the receiving groove is greater than the thickness of the sliding portion, and the sliding portion is slidably arranged in the receiving groove;

[0017] The adjusting mechanism is connected with the sliding portion and is used for controlling the position of the sliding portion relative to the supporting portion.

[0018] In any of the above technical solutions, further, the adjusting mechanism comprises:

[0019] A spring is arranged in the receiving groove, and two ends of the spring are connected with the sliding portion and the bottom surface of the receiving groove respectively, and the spring is used for ejecting the sliding portion;

[0020] A magnetic attraction part is arranged on the bottom surface of the sliding portion;

[0021] A magnetic control device is arranged on the supporting portion and corresponds to the magnetic attraction part, and is used for attracting the magnetic attraction part to drive the sliding portion to move downward when the magnetic control device is turned on.

[0022] In any of the above technical solutions, further, the outer diameter of the supporting part is smaller than the diameter of the through hole, the outer side of the supporting part is provided with a clamping groove, and a flexible sealing ring is arranged in the clamping groove.

[0023] The beneficial effects are:

[0024] 1. The oil injection device for the paper tube of the transformer comprises a first nozzle assembly arranged on the inner side and a plurality of second nozzle assemblies arranged on the outer side, which are used for oil injection on the inner and outer sides, so that the control of the oil injection amount and the uniformity of the oil injection are facilitated.

[0025] 2. The oil injection tank is arranged, which facilitates the recovery of the sprayed oil; the through hole is arranged at the bottom of the oil injection tank, and the supporting part is vertically conveyed by the matching lifting mechanism, so that the paper tube is conveyed and injected in an upright state, the uniform oil injection on the upper side of the paper tube and the downward flow of the oil on the lower side by the self-gravity of the oil are facilitated, the overall uniform oil injection effect is realized, and the use effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only constitute some of the embodiments of the present application, and the present application should not be limited to the examples described herein. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] Fig. 1 is a three-dimensional structure schematic diagram of a paper tube oil injection device for a transformer of the present application;

[0028] Fig. 2 is a partial structure schematic diagram of a paper tube oil injection device for a transformer of the present application;

[0029] Fig. 3 is a cross-sectional structure schematic diagram of a paper tube oil injection device for a transformer of the present application.

[0030] The following is the explanation of the reference signs:

[0031] 1, oil injection tank;

[0032] 2, supporting member; 201, supporting part; 202, sliding part;

[0033] 3, lifting mechanism;

[0034] 4, first nozzle assembly;

[0035] 5, second nozzle assembly;

[0036] 6, hydraulic mechanism; 601, liquid storage tank; 602, hydraulic pump; 603, hydraulic valve;

[0037] 7, adjusting mechanism; 701, spring; 702, magnetic attraction member; 703, magnetic controller;

[0038] 8, flexible sealing ring. DETAILED DESCRIPTION

[0039] The following will describe the example embodiments according to the present application in detail with reference to the drawings. Obviously, the described embodiments only constitute some of the embodiments of the present application, and not all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0040] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0041] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] The following embodiments will provide a detailed description of a paper tube oil spraying device for transformers according to this application.

[0045] In this embodiment, as Figs. 1 to 3 As shown, the paper tube oil spraying device for the transformer includes: an oil spraying box 1, which is hollow and has a through hole on the bottom surface;

[0046] Support component 2, corresponding to the hole, is installed in lifting mechanism 3 and is used to support the straight cylinder;

[0047] Lifting mechanism 3, for driving the support 2 up and down;

[0048] The first nozzle assembly 4 is arranged in the oil spraying tank 1 and corresponds to the inner side of the support 2;

[0049] A plurality of second nozzle assemblies 5 are arranged in the oil spraying tank 1 and correspond to the outer side of the support 2;

[0050] The hydraulic mechanism 6 is in communication with the first nozzle assembly 4 and each second nozzle assembly 5, for supplying oil to the first nozzle assembly 4 and each second nozzle assembly 5.

[0051] In the technical solution, the oil spraying tank 1 is hollow and cuboid, the center of the bottom surface is provided with a through hole, and the through hole is circular. The lifting mechanism 3 is a motor-driven screw rod and sliding block moving mechanism and is vertically arranged. The support 2 is arranged below the through hole through the support arm on the sliding block of the lifting mechanism 3. The support 2 is circularly arranged, and the paper tube is placed on the upper side of the support 2. With the driving of the lifting mechanism 3, the paper tube without oil spraying is driven into the oil spraying tank 1 for oil spraying, and after the oil spraying is completed, the paper tube is driven to move downward to the lower side of the oil spraying, so that the mechanical hand or the conveying line can convey the paper tube after the oil spraying is completed and convey the next paper tube to be sprayed to the support 2. The first nozzle assembly 4 is coaxially arranged at the center of the through hole and is fixed to the inner side top surface of the oil spraying tank 1. The first nozzle assembly 4 is circularly and uniformly arranged into four groups, each group is provided with four nozzles arranged uniformly upward and downward, and the first nozzle assembly 4 is used to move to the inner side of the paper tube and spray oil to the inner side of the paper tube. The second nozzle assembly 5 is circularly and uniformly arranged into four groups and is fixed to the inner side top surface of the oil spraying tank 1 and corresponds to the outer side of the support 2. Each second nozzle assembly 5 is arranged in the middle of the corresponding two groups of first nozzle assemblies 4, so that each second nozzle assembly 5 is staggered by 45° with the corresponding first nozzle assembly 4. The hydraulic mechanism 6 is provided with a liquid storage tank 601 and a hydraulic pump 602. The liquid storage tank 601 is arranged on the lower side of the oil spraying tank 1, the hydraulic pump 602 is in pipeline communication with the liquid storage tank 601 and each nozzle assembly respectively, and the transformer oil is provided to the nozzles of each nozzle assembly through the hydraulic pump 602, so that the transformer oil is uniformly sprayed on the inner and outer sides of the paper tube through the nozzles of each nozzle assembly. In some technical solutions, a plurality of hydraulic valves 603 are further arranged, the hydraulic valves 603 are correspondingly arranged between the hydraulic pump 602 and each nozzle assembly, and are used to control the on-off between the hydraulic pump 602 and the corresponding nozzle assembly.

[0052] In the embodiment, the top surface of the support 2 is provided with a guide groove, and the guide groove is used for the oil sprayed by the first nozzle assembly 4 to flow outward;

[0053] The inner bottom surface of the oil spraying tank 1 is provided as an inclined surface inclined outward along the passing hole, and the bottom surface of the oil spraying tank 1 is provided with a guide hole for collecting oil in the tank, and the guide hole is communicated with the oil storage tank of the hydraulic mechanism 6.

[0054] In the technical solution, the top surface of the sliding part 202 of the supporting part 2 is provided with four guide grooves extending outward from the shaft center and gradually increasing in depth, and the four guide grooves are uniformly arranged in a circle. When the first nozzle assembly 4 sprays oil, part of the oil falls on the top surface of the supporting part 2. When the oil gathers to a certain amount, it can flow along the guide groove to the inner bottom surface of the oil spraying tank 1, facilitating the recovery of the oil. Similarly, the inner bottom surface of the oil spraying tank 1 is provided as an inclined surface inclined outward and downward, and a guide hole is arranged on one side of the inner bottom surface of the oil spraying tank 1, and the guide hole is communicated with the oil storage tank, so that the excess oil in the oil spraying tank 1 can be automatically collected.

[0055] In the embodiment, further comprising:

[0056] The adjusting mechanism 7;

[0057] The supporting part 2 is provided with a supporting part 201 and a sliding part 202, and the outer diameter of the sliding part 202 is smaller than the inner diameter of the paper tube;

[0058] The top surface of the supporting part 201 is provided with a containing groove, and the depth of the containing groove is greater than the thickness of the sliding part 202, and the sliding part 202 is slidably arranged in the containing groove;

[0059] The adjusting mechanism 7 is connected with the sliding part 202 and is used for controlling the position of the sliding part 202 relative to the supporting part 201.

[0060] In the technical solution, the supporting part 201 is fixed on the sliding block of the lifting mechanism 3, the outer side of the supporting part 201 is circularly arranged, the top surface of the supporting part 201 is provided with a circular and vertically downward extending containing groove, and the sliding part 202 is slidably arranged in the containing groove. The containing groove can be used for sliding the sliding part 202 to the position that the top surface of the supporting part 201 and the sliding part 202 are flush. The adjusting mechanism 7 is arranged on the bottom surface of the sliding part 202 and is used for adjusting the relative height of the sliding part 202. In the process of taking and placing, the sliding part 202 is pulled down to the position that the top surface of the sliding part 202 is flush with the top surface of the supporting part 201, so as to facilitate the automatic conveying of the production line. At the same time, in the process of upwardly lifting the paper tube, the sliding part 202 is upwardly lifted to the position that the top surface of the sliding part 202 is partially above the top surface of the supporting part 201, so as to limit the paper tube in the left-right and front-back directions.

[0061] In some technical solutions, the diameter of the containing groove and the outer diameter of the sliding part 202 are smaller than the inner diameter of the paper tube, and the top surface of the sliding part 202 is provided with a chamfer, so as to increase the allowable error range of the paper tube placed on the supporting part 2, and facilitate the matching of the automatic production line.

[0062] In the embodiment, the adjusting mechanism 7 comprises:

[0063] A spring 701 is arranged in the accommodating groove and connected with the sliding part 202 and the bottom surface of the accommodating groove at two ends respectively, and the spring 701 is used for ejecting the sliding part 202;

[0064] A magnetic attraction part 702 is arranged on the bottom surface of the sliding part 202;

[0065] A magnetic controller 703 is arranged on the supporting part 201 and corresponds to the magnetic attraction part 702, and is used for attracting the magnetic attraction part 702 to drive the sliding part 202 to move downward when being opened.

[0066] In the technical solution, the spring 701 is circumferentially arranged as four, the top surface is fixedly connected with the sliding part 202, and the bottom surface is fixedly connected with the bottom surface of the accommodating groove. The magnetic attraction part 702 is arranged on the iron block and fixed on the bottom surface of the sliding part 202. The magnetic controller 703 is an electromagnet controlled by a controller, is externally connected with a power supply, generates a magnetic field attracting the magnetic attraction part 702 by electrifying the electromagnet, and attracts the sliding part 202 to move downward. When the magnetic controller 703 is closed, the sliding part 202 is upwardly ejected by the spring 701.

[0067] In the embodiment, the outer diameter of the supporting part 2 is smaller than the diameter of the through hole, the outer side of the supporting part 2 is provided with a clamping groove, and a flexible sealing ring 8 is arranged in the clamping groove.

[0068] In the technical solution, the arrangement facilitates the sliding in and out of the supporting part 2 at the through hole, reduces the precision requirement, and also facilitates reducing the resistance of the air pressure in the oil injection tank 1 to the movement of the supporting part 2. The above has described the embodiments of the disclosure, and the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical application or improvement of the technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the disclosed embodiments.

Claims

1. A paper tube oil spraying device for transformers, characterized in that, include: The fuel injection tank (1) is hollow and has a through hole on the bottom surface; The support member (2), corresponding to the through hole, is installed on the lifting mechanism (3) and is used to support the straight cylinder; The lifting mechanism (3) is used to drive the support member (2) to move up and down; The first nozzle assembly (4) is disposed inside the fuel injection tank (1) and is correspondingly disposed on the inner side of the support member (2); Several second nozzle assemblies (5) are disposed inside the fuel injection tank (1) and are correspondingly disposed on the outside of the support member (2); The hydraulic mechanism (6) is connected to the first nozzle assembly (4) and each of the second nozzle assemblies (5) and is used to supply oil to the first nozzle assembly (4) and each of the second nozzle assemblies (5).

2. The transformer paper tube oil spraying device according to claim 1, characterized in that, The top surface of the support member (2) is provided with a guide groove, which is used to allow the oil sprayed by the first nozzle assembly (4) to flow outward; The inner bottom surface of the oil injection tank (1) is set as an inclined surface that slopes outward along the through hole, and the bottom surface of the oil injection tank (1) is provided with a guide hole for collecting oil in the tank, and the guide hole is connected to the oil storage tank of the hydraulic mechanism (6).

3. The transformer paper tube oil spraying device according to claim 1, characterized in that, Also includes: Adjustment mechanism (7); The support member (2) is provided with a support part (201) and a sliding part (202), wherein the outer diameter of the sliding part (202) is smaller than the inner diameter of the paper tube; The top surface of the support (201) is provided with a receiving groove, the depth of which is greater than the thickness of the sliding part (202), and the sliding part (202) is slidably disposed in the receiving groove. The adjustment mechanism (7) is connected to the sliding part (202) and is used to control the position of the sliding part (202) relative to the support part (201).

4. The transformer paper tube oil spraying device according to claim 3, characterized in that, The adjustment mechanism (7) includes: A spring (701) is disposed in the receiving groove, with its two ends connected to the sliding part (202) and the bottom surface of the receiving groove, respectively. The spring (701) is used to push out the sliding part (202). A magnetic suction element (702) is disposed on the bottom surface of the sliding part (202); A magnetic controller (703) is disposed on the support part (201) and is disposed corresponding to the magnetic suction member (702) for attracting the magnetic suction member (702) and driving the sliding part (202) to move downward when the magnetic suction member (702) is opened.

5. The transformer paper tube oil spraying device according to claim 1, characterized in that, The outer diameter of the support member (2) is smaller than the diameter of the through hole. The support member (2) has a groove on its outer side and a flexible sealing ring (8) is provided in the groove.

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