Online detection device for oil conservator

Abstract

The utility model relates to an oil conservator on-line detection device which comprises an oil level gauge, the oil level gauge is installed on the outer wall of an end plate on one side of an oil conservator, an input shaft used for driving a pointer to rotate on the oil level gauge penetrates through the end plate to enter the oil conservator, and a stay wire displacement sensor is installed on the inner wall of the end plate in the oil conservator. A winding shaft of the stay wire displacement sensor is in transmission connection with the input shaft through a worm and gear, and a stay wire rope of the stay wire displacement sensor is vertically connected with the free end of the corrugated core body in the oil conservator. According to the utility model, a worm and gear transmission structure is matched with the stay wire displacement sensor, so that numerical exchange between displacement and meter display is realized, and on-line detection display of oil in the oil conservator can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-immersed power transformers, in particular to an online detection device for an oil storage cabinet. Background Art

[0002] The metal corrugated transformer oil conservator is a device used to store the variable volume of transformer oil. Its purpose is to keep the transformer oil always full of the oil tank regardless of the oil temperature. There is a metal bellows in the metal corrugated transformer oil conservator, one end of which is fixed on the end plate of the oil conservator and the other end is a free end. When the external pressure changes, the metal bellows can expand and contract freely to compensate for the volume of the oil conservator, that is, when the transformer oil heats up, the volume of the oil increases and enters the oil conservator from the transformer oil tank. At this time, the pressure of the oil is greater than the air pressure in the metal bellows, and the metal bellows in the cabinet is compressed, and the increase in oil is stored in the oil conservator; when the transformer oil temperature drops, the volume of the oil decreases, the oil pressure is less than the air pressure in the bellows, the metal bellows stretches, and its free end sends the oil back to the oil tank.

[0003] In order to understand this process in time, a display device is installed on the oil conservator to display the position of the free end of the bellows. This device is currently called an oil level gauge. However, for horizontal corrugated inner oil conservator and corrugated outer oil conservator, ordinary liquid level gauges cannot be used to observe, so it is necessary to develop an online detection device for the above oil conservator. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an online detection device for an oil storage tank, which can realize online detection and display of oil in the oil storage tank.

[0005] The utility model is realized through the following technical solutions:

[0006] Provided is an online detection device for an oil conservator, comprising an oil level gauge, which is mounted on the outer wall of an end plate on one side of the oil conservator, an input shaft on the oil level gauge for driving a pointer to rotate passes through the end plate and enters the oil conservator, a wire displacement sensor is mounted on the inner wall of the end plate in the oil conservator, a winding shaft of the wire displacement sensor is transmission-connected to the input shaft through a worm gear, and a wire rope of the wire displacement sensor is vertically connected to the free end of a corrugated core in the oil conservator.

[0007] This solution uses a wire displacement sensor and a worm gear structure to transmit the wire displacement and the oil level gauge pointer rotation angle, thereby realizing the exchange of displacement and displayed values ​​and achieving online detection and display of the oil in the oil storage tank.

[0008] Furthermore, one end of the winding shaft of the wire displacement sensor extends out of the wire displacement sensor housing and is connected to a worm, one end of the input shaft extending into the oil storage cabinet is connected to a worm wheel meshing with the worm, and a reduction bracket is connected to the mounting seat of the wire displacement sensor, and this end of the input shaft is rotatably connected to the reduction bracket through a bearing.

[0009] The winding shaft of the wire displacement sensor is connected to the worm, and the input shaft of the oil level gauge is rotationally connected to the reduction bracket and connected to the worm wheel. The worm wheel is driven to rotate by the worm, which drives the pointer of the oil level gauge to rotate for real-time detection and display.

[0010] Furthermore, a hook is provided at the end of the pull rope, and the hook is vertically connected to the free end of the corrugated core through the hanging rope.

[0011] A hook is arranged at the end of the pull rope, and a hanging rope is arranged between the hook and the corrugated core for vertical connection, so that the use length of the pull rope can be reduced, and a better monitoring range can be provided conveniently.

[0012] Beneficial effects of the utility model:

[0013] The utility model uses a wire displacement sensor in conjunction with a worm gear transmission structure to be connected to the input shaft of an oil level gauge. The speed ratio structure of the worm gear can realize the interactive ratio of displacement and displayed numerical value, and realize the exchange of displacement and displayed numerical value. The speed ratio structure can be equipped with different speed ratio structures according to the angle degree required by the customer, and can be adapted to oil storage cabinets of different sizes, so as to realize online detection and display of oil in the oil storage cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is installed in the corrugated external oil storage cabinet schematic diagram.

[0015] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0016] Figure 3 The utility model is installed in the corrugated oil storage cabinet schematic diagram.

[0017] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle.

[0018] As shown in the figure:

[0019] 1. Oil storage cabinet, 2. Oil level gauge, 3. Transformer oil tank, 4. Corrugated core, 5. Speed ​​reduction bracket, 6. Worm, 7. Worm wheel, 8. Pull wire displacement sensor, 9. Hook, 10. Pull wire rope, 11. Input shaft, 12. Horizontal hanging rope, 13. End plate, 14. Vertical hanging rope. DETAILED DESCRIPTION

[0020] To clearly illustrate the technical features of this solution, the following will elaborate on this solution through specific implementation manners.

[0021] An on-line detection device for an oil conservator, comprising an oil level gauge 2, the oil level gauge 2 is installed on the outer wall of the end plate 13 on one side of the oil conservator 1, the input shaft 11 for driving the pointer to rotate on the oil level gauge 2 penetrates the end plate 13 and enters the oil conservator 1, and a wire-drawing displacement sensor 8 is installed on the inner wall of the end plate 13 in the oil conservator 1. The wire winding shaft of the wire-drawing displacement sensor 8 is in transmission connection with the input shaft 11 through a worm and worm gear, and the wire rope 10 of the wire-drawing displacement sensor 8 is vertically connected to the free end of the corrugated core body 4 in the oil conservator 1.

[0022] One end of the wire winding shaft of the wire-drawing displacement sensor 8 extends out of the housing of the wire-drawing displacement sensor 8 and is connected with a worm 6, one end of the input shaft 11 extending into the oil conservator 0 is connected with a worm gear 7 meshing with the worm 3, a deceleration bracket 5 is connected to the mounting seat of the wire-drawing displacement sensor 8, and this end of the input shaft 11 is rotationally connected with the deceleration bracket 5 through a bearing.

[0023] As Figure 1 shown, for an outer corrugated oil conservator, a hook 9 is provided at the end of the wire rope 10, and the hook 9 and the free end of the corrugated core body 4 are vertically connected through a horizontal hanging rope 12. As Figure 3 shown, for an inner corrugated oil conservator, a hook 9 is provided at the end of the wire rope 10, and the hook 9 and the free end of the corrugated core body 4 are vertically connected through a vertical hanging rope 14.

[0024] When this utility model is in use, it is installed on the oil conservator 1. There is a corrugated core body 4 and a transformer oil tank 3 in the oil conservator 1. One end of it is fixed on the end plate 13 of the oil conservator 1, and the other end is a free end. When the external pressure changes, the corrugated core body 4 can freely expand and contract to compensate for the volume of the oil conservator 1. That is, when the transformer oil heats up, the volume of this oil increases, and it enters the oil conservator 1 from the transformer oil tank. At this time, the pressure of this oil is greater than the air pressure of the corrugated core body 4, and the corrugated core body 4 in the oil conservator 1 is compressed, and the increased amount of oil is stored in the oil conservator 1; when the transformer oil temperature drops, the volume of the oil decreases, the oil pressure is less than the air pressure in the corrugated core body 4, the corrugated core body 4 elongates, and its free end sends the oil into the oil conservator 1, thereby driving the hook 9 on the corrugated core body 4 in the oil conservator 1 to pull the wire rope 10 back and forth, dragging the wire-drawing displacement sensor 8. The wire winding shaft of the wire-drawing displacement sensor 8 rotates to drive the worm 6 to rotate, the worm 6 rotates to drive the worm gear 7 to rotate, and further drives the input shaft 11 of the oil level gauge 2 to rotate. The rotation of the input shaft 11 of the oil level gauge 2 drives the pointer of the oil level gauge 2 to rotate to complete the numerical display. In this embodiment, the speed ratio of the worm and worm gear is 10:0.75, that is, when inputting 10 turns, the oil level gauge 2 shows a rotation of 0.75 turns, that is, 270°. This speed ratio can be selected according to the customer's needs.

[0025] Of course, the above description is not limited to the above examples. The technical features not described in this utility model can be realized by or adopt the prior art, which will not be elaborated here. The above embodiments and accompanying drawings are only used to illustrate the technical solutions of this utility model and are not a limitation to this utility model. The detailed description of this utility model is made with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in this technical field within the substantial scope of this utility model do not depart from the purpose of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. An online detection device for an oil storage tank, comprising an oil level gauge, characterized in that: The oil level gauge is installed on the outer wall of the end plate on one side of the oil conservator. The input shaft on the oil level gauge for driving the pointer to rotate passes through the end plate and enters the oil conservator. A wire displacement sensor is installed on the inner wall of the end plate in the oil conservator. The winding shaft of the wire displacement sensor is connected to the input shaft through a worm gear, and the wire rope of the wire displacement sensor is vertically connected to the free end of the corrugated core in the oil conservator.

2. The oil storage tank online detection device according to claim 1 is characterized in that: One end of the winding shaft of the wire displacement sensor extends out of the wire displacement sensor housing and is connected to a worm, one end of the input shaft extending into the oil storage cabinet is connected to a worm wheel meshing with the worm, and a reduction bracket is connected to the mounting seat of the wire displacement sensor, and this end of the input shaft is rotatably connected to the reduction bracket through a bearing.

3. The oil storage tank online detection device according to claim 1 is characterized in that: A hook is provided at the end of the pull rope, and the hook is vertically connected to the free end of the corrugated core through the hanging rope.

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