Automatic high-pressure water stripping stator bar main insulation system

Abstract

The utility model discloses an automatic high-pressure water stripping stator bar main insulation system, which comprises a stripping bin, a movable guide rail and a plurality of groups of multi-stage water pressure nozzle arrays arranged along the movable guide rail are arranged in the stripping bin, and a water outlet is further arranged at the bottom of the stripping bin. According to the utility model, the automation degree of the stripping process is obviously improved, and the working environment is obviously improved; the cutting, stripping and drying processes of the insulating layer are integrated, and the stripping efficiency is improved; manual operation is reduced, stripping consistency is improved, and follow-up insulating layer repairing is facilitated.

Description

Technical Field

[0001] The utility model relates to, in particular to an automatic high-pressure water stripping stator wire bar main insulation system. Background Art

[0002] The stator bar of the generator is mainly composed of an inner conductor and an outer insulating material. As the motor runs for years or is affected by accidental factors in production, the stator bar may face insulation failure, endangering the safety of the generator set. Therefore, it is necessary to repair or replace the insulation of the failed stator bar. The inner conductor in the stator bar with insulation failure has a longer service life and replacement cost. Therefore, repairing the insulation layer of the failed bar is a more reasonable choice from both economic and technical considerations. However, the premise of insulation repair is to peel off the outer insulation failure layer without damaging the inner conductor.

[0003] At present, the main technologies for insulation stripping include laser ablation stripping, ultrasonic stripping, and high-pressure water stripping. Among them, the black smoke generated by the laser ablation stripping process and the low efficiency of ultrasonic stripping restrict the application and promotion of its insulation stripping process. The high-pressure water stripping process uses a high-pressure water pump to form a jet with a certain pressure of water to impact the stator wire rod. The high-pressure water acts on the insulation layer, which can make incisions and gradually strip off. In order to ensure high stripping efficiency without damaging the insulating paint on the surface of the electromagnetic wire, the high-pressure water spray gun system currently used needs to be manually operated, the water pressure is difficult to control, the operator's labor intensity is high, the working environment is poor, the insulation stripping effect is inconsistent, and it is impossible to spray high-pressure water spray guns of different shapes for coordination.

[0004] Therefore, in view of the above problems, providing an automated high-pressure water stripping stator wire bar main insulation system is a technical problem to be solved urgently in the field. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide an automated high-pressure water stripping stator wire bar main insulation system.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] The first aspect of the utility model provides an automated high-pressure water stripping system for the main insulation of stator wire rods, comprising a stripping chamber, wherein a movable guide rail is provided in the stripping chamber, and a plurality of groups of multi-stage water pressure nozzle arrays are arranged along the movable guide rail, and a drainage outlet is also provided at the bottom of the stripping chamber.

[0008] Furthermore, the stripping bin is an aluminum alloy stripping bin or a stainless steel stripping bin.

[0009] Furthermore, the movable guide rail is arranged at a midline position above the stripping chamber and is connected to an external power motor.

[0010] Furthermore, a wire rod buckle is provided on the movable guide rail.

[0011] Furthermore, the multi-stage water pressure nozzle array is a three-stage water pressure nozzle array, which are a low water pressure nozzle array, a medium water pressure nozzle array, and a high water pressure nozzle array.

[0012] Furthermore, each group of multi-stage water pressure nozzle arrays is arranged along the movable guide rail in descending order according to the water pressure.

[0013] Furthermore, each group of multi-stage water pressure nozzle arrays includes a bottom spray gun array, a side spray gun array and a top spray gun array, and a certain number of nozzles are arranged in a ring shape among the bottom spray gun array, the side spray gun array and the top spray gun array.

[0014] Furthermore, a blower is also provided in the stripping chamber, and the blower is located at the exit of the stripping chamber.

[0015] Furthermore, a filter screen is provided at the bottom of the stripping chamber, and the filter screen is provided above the drain outlet.

[0016] Furthermore, an observation window is provided in the middle of the stripping chamber.

[0017] The beneficial effects of the utility model are:

[0018] In an exemplary embodiment of the utility model, the automation degree of the stripping process is significantly improved, and the working environment is significantly improved; the insulation layer cutting, stripping, and drying processes are integrated, and the stripping efficiency is improved. Manual operations are reduced, and the stripping consistency is improved, which is conducive to the subsequent insulation layer repair. The spray gun system has adjustable jet pressure, shape, and direction along the direction of wire rod movement, and the stripping effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of an automated high-pressure water stripping stator wire bar main insulation system provided for an exemplary embodiment of the utility model;

[0020] 1-stripping chamber, 2-moving guide rail, 3-multi-stage water pressure nozzle array, 4-water outlet, 5-stator wire rod, 6-filter screen. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are directions or positional relationships based on the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0025] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determination". In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] See also Figure 1 , Figure 1A structural schematic diagram of an automated high-pressure water stripping stator wire rod main insulation system provided in an exemplary embodiment of the utility model is shown, wherein the left side of the figure is a main view, and the right side of the figure is a side view, comprising a stripping chamber 1, wherein a movable guide rail 2 and a plurality of groups of multi-stage water pressure nozzle arrays 3 are arranged along the movable guide rail 2, and a drainage outlet 4 is also arranged at the bottom of the stripping chamber 2.

[0028] Specifically, in this exemplary embodiment, the stator wire rod 5 to be processed is first placed on the movable guide rail 2, and the movable guide rail 2 can drive the stator wire rod 5 to move. A plurality of groups of multi-stage water pressure nozzle arrays 3 are arranged in sequence on the stator wire rod movement path (i.e., along the direction of the movable guide rail 2) (preferably, the water pressure, jet shape, and jet direction of each group of multi-stage water pressure nozzle arrays 3 are adjustable). During the movement of the stator wire rod 5, it is sequentially subjected to the water pressure jet impact of the multi-stage water pressure nozzle array 3 to achieve the cutting and stripping of the insulation layer of the stator wire rod 5, and finally the impacted water flows out through the drain port 4 (which can be collected and recycled). The wire rod moving system and the spray gun system are integrated on the stripping chamber 2, and the water pressure stripping of the insulation layer is carried out in a semi-closed environment, thereby forming an automatic water pressure stripping stator insulation layer system.

[0029] Therefore, in this exemplary embodiment, the automation level of the stripping process is significantly improved, and the working environment is significantly improved; the insulation layer cutting, stripping, and drying processes are integrated, and the stripping efficiency is improved. Manual operations are reduced, and the stripping consistency is improved, which is conducive to the subsequent insulation layer repair. The spray gun system can adjust the jet pressure, shape, and direction along the direction of the wire rod movement, and the stripping effect is improved.

[0030] The following content will introduce various preferred exemplary embodiments of the utility model:

[0031] More preferably, in an exemplary embodiment, the stripping chamber 1 is an aluminum alloy stripping chamber or a stainless steel stripping chamber.

[0032] Specifically, in this exemplary embodiment, in order to provide a more stable semi-enclosed environment, the stripping chamber 1 is an aluminum alloy stripping chamber or a stainless steel stripping chamber. The stripping chamber 1 has a thickness of 3 to 5 mm, and the stainless steel stripping chamber can be 304 or 306 stainless steel.

[0033] More preferably, in an exemplary embodiment, the movable guide rail 2 is disposed at a midline position above the stripping chamber 1 and is connected to an external power motor.

[0034] Specifically, in this exemplary embodiment, the movable guide rail 2 is fixed (by bolts) at the middle line position above the stripping chamber 1 , and the guide rail movement 2 is powered by an external power motor, with a moving speed of 0.05 m / s to 0.1 m / s.

[0035] In addition, the nozzles of the multiple groups of multi-stage water pressure nozzle arrays 3 are preferably fixed in the stripping chamber 1 by snap fastenings.

[0036] More preferably, in an exemplary embodiment, a wire rod buckle is provided on the movable guide rail 2 .

[0037] Specifically, in this exemplary embodiment, the stator bars 5 are fixed on the moving guide rail 2 by means of bar buckles provided on the moving guide rail 2 , so that the stator bars 5 are moved driven by the moving guide rail 2 .

[0038] More preferably, in an exemplary embodiment, the multi-stage water pressure nozzle array 3 is a three-stage water pressure nozzle array, which are a low water pressure nozzle array, a medium water pressure nozzle array, and a high water pressure nozzle array.

[0039] Specifically, in this exemplary embodiment, the multi-stage water pressure nozzle array 3 is divided into three levels, namely low water pressure, medium water pressure and high water pressure. The specific implementation forms of low water pressure, medium water pressure and high water pressure can be achieved through the structure of the nozzle itself or through external given water pressure.

[0040] More preferably, in an exemplary embodiment, each group of multi-stage water pressure nozzle arrays 3 is arranged along the movable guide rail 2 in descending order according to the water pressure.

[0041] Specifically, in this exemplary embodiment, the stator bars 5 are processed by a high-pressure nozzle array, a medium-pressure nozzle array, and a low-pressure nozzle array in sequence during the movement.

[0042] More preferably, in an exemplary embodiment, each group of multi-stage water pressure nozzle arrays includes a bottom spray gun array, a side spray gun array and a top spray gun array, and a certain number of nozzles are arranged in a ring shape among the bottom spray gun array, the side spray gun array and the top spray gun array.

[0043] Specifically, in this exemplary embodiment, each group of multi-stage water pressure nozzle arrays 3 is arranged in a ring shape with the wire rod as the center, and a total of 4-8 nozzles are arranged, including a bottom spray gun array, a side spray gun array and a top spray gun array (such as Figure 1 A group of nozzles is arranged every 1 to 1.5 meters along the moving direction of the moving guide rail 2, and a total of 6 to 8 groups of nozzles are arranged.

[0044] In addition, preferably, the jet pressure, shape and direction of each nozzle are adjustable.

[0045] More preferably, in an exemplary embodiment, a blower is further provided in the stripping chamber 1 , and the blower is located at the exit of the stripping chamber 1 .

[0046] Specifically, in this exemplary embodiment, after the stator wire bar 5 reaches the outlet, a blower is operated to dry the moisture on the conductor to facilitate subsequent collection.

[0047] More preferably, in an exemplary embodiment, a filter screen 6 is further disposed at the bottom of the stripping chamber 2, and the filter screen 6 is disposed above the drain outlet.

[0048] Specifically, in this exemplary embodiment, a filter screen 6 is provided to receive the insulation layer peeled off from the stator bar 5 , thereby avoiding clogging of the water outlet 4 .

[0049] More preferably, in an exemplary embodiment, an observation window is further provided in the middle of the stripping chamber 1 .

[0050] Specifically, in the present exemplary embodiment, the observation window is used for the operator to observe the status midway.

[0051] Based on the above exemplary embodiments, the operation steps of the entire system are as follows:

[0052] (1) The stator wire bar 1 is clamped by the wire bar buckle and placed on the movable guide rail 2, and the movable guide rail 2 is started, and the movable guide rail 2 enters the stripping chamber 1;

[0053] (2) According to the workpiece and the peeling experiment parameters, the moving speed of the moving guide rail 2 is determined (controlled by an external power motor), and the jet pressure, jet shape, jet angle, and jet time of each group of multi-stage water pressure nozzle arrays 3 are determined;

[0054] (3) When the front end of the stator wire rod 5 reaches each group of multi-stage hydraulic nozzle arrays 3, each group of spray guns is started in turn;

[0055] (4) After the stator wire rod 5 reaches the outlet of the stripping chamber 1, the blower is operated to dry the moisture on the conductor of the stator wire rod 5;

[0056] (5) After the continuous operation is completed, the multi-stage water pressure nozzle array 3 is turned off, and the blower system is turned off after the blower finishes working.

[0057] During the whole working process, the water sprayed by the multi-stage hydraulic nozzle array 3 is retained at the bottom of the stripping chamber 1 by gravity and is recovered through the water outlet 4; at the same time, the insulating layer of the glass dropped from the stator wire rod 5 is collected by the filter 6.

[0058] Obviously, the above embodiments are only examples for clear explanation, and are not limitations on the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention of the utility model.

Claims

1. An automated high-pressure water stripping stator bar main insulation system, characterized in that: The stripping chamber comprises a stripping chamber, in which a movable guide rail is arranged, and a plurality of groups of multi-stage water pressure nozzle arrays are arranged along the movable guide rail, and a drainage port is also arranged at the bottom of the stripping chamber.

2. The automatic high-pressure water stripping stator wire bar main insulation system according to claim 1 is characterized by: The stripping bin is an aluminum alloy stripping bin or a stainless steel stripping bin.

3. The automatic high-pressure water stripping stator wire bar main insulation system according to claim 1 is characterized by: The movable guide rail is arranged at the middle line position above the stripping bin and is connected to the external power motor.

4. The automatic high-pressure water stripping stator wire bar main insulation system according to claim 1 is characterized by: A wire rod buckle is arranged on the movable guide rail.

5. The automatic high-pressure water stripping stator bar main insulation system according to claim 1 is characterized by: The multi-stage water pressure nozzle array is a three-stage water pressure nozzle array, which are a low water pressure nozzle array, a medium water pressure nozzle array, and a high water pressure nozzle array.

6. The automatic high-pressure water stripping stator wire bar main insulation system according to claim 5 is characterized by: Each group of multi-stage water pressure nozzle arrays is arranged along the movable guide rail in descending order according to the water pressure.

7. The automatic high-pressure water stripping stator bar main insulation system according to claim 1 is characterized by: Each group of multi-stage water pressure nozzle arrays includes a bottom spray gun array, a side spray gun array and a top spray gun array, and a certain number of nozzles are arranged in a ring shape among the bottom spray gun array, the side spray gun array and the top spray gun array.

8. The automatic high-pressure water stripping stator bar main insulation system according to claim 1 is characterized by: A blower is also provided in the stripping chamber and is located at the exit of the stripping chamber.

9. The automatic high-pressure water stripping stator bar main insulation system according to claim 1 is characterized by: A filter screen is also provided at the bottom of the stripping bin, and the filter screen is provided above the drain outlet.

10. The automatic high-pressure water stripping stator bar main insulation system according to claim 1, characterized in that: An observation window is also arranged in the middle of the stripping chamber.

Images