Residual oil isolation device for vacuum measurement of transformer

Abstract

The utility model relates to the technical field of residual oil measurement, and discloses a transformer vacuum measurement residual oil isolation device which comprises a measurement box and a control box, a funnel is installed at the top end in the measurement box, and a gravity sensor is arranged at the bottom end of a collection cylinder. According to the utility model, the inclined plate and the transverse plate are fixedly mounted and combined and then are fixed at the bottom in the measuring box, the gravity sensor can detect the weight of the collecting barrel, oil settles at the position of the funnel, and finally the content of the residual oil is calculated according to the measured height of the residual oil. In the process, a vacuum pump can be utilized to pump the measuring box to a state close to vacuum, then the state of oil in the funnel is observed at the position of the observation window, settlement change data is obtained after comparison with a marking line, meanwhile, leaked oil is collected at the position of the collecting cylinder, and the weight of the leaked oil is monitored by the gravity sensor and fed back to a display screen of the control box to be displayed. In this way, the overall observation capability is well improved in the working process.

Description

Technical Field

[0001] The utility model relates to the technical field of residual oil measurement, in particular to a device for vacuum measuring and isolating residual oil of a transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is mainly composed of a primary coil, a secondary coil, and an iron core. Transformers are basic equipment for power transmission and distribution. Their main function is to convert AC power of one voltage and current into another voltage and current of the same frequency. They are a very common type of facility.

[0003] The residual oil detection of transformer is a very important task in the operation of transformer. It can detect transformer faults early, ensure the normal operation of the power system, and increase the service life of the transformer. Therefore, a residual oil measuring device is needed to complete this task. Generally, a funnel sedimentation method is used for timing detection. If observation is difficult during the detection, it is easy to directly affect the height change record during the sedimentation detection, and easily affect the measurement data. Utility Model Content

[0004] The purpose of the utility model is to provide a device for vacuum measuring and isolating residual oil in transformers, so as to solve the problem proposed in the above-mentioned background technology that generally a funnel sedimentation method is used for timing detection, and if observation is difficult during detection, it is easy to directly affect the height change record during sedimentation detection and the measurement data.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for vacuum measuring and isolating residual oil in a transformer, comprising a measuring box and a control box, a funnel is installed at the top of the measuring box, an observation window is installed at the front end of the measuring box, a marking line is fixed to the outer wall of the funnel, an inclined plate is installed at the bottom end of the measuring box, a horizontal plate is installed on one side of the inclined plate, a collecting tube is placed at the top of the horizontal plate, and a gravity sensor is provided at the bottom end of the collecting tube.

[0006] Preferably, the inclined plates are symmetrically distributed about the central axis of the transverse plate, and the inclined plates and the transverse plate are welded and fixed.

[0007] Preferably, the top size of the funnel is larger than the bottom size, and the funnel is made of transparent material.

[0008] Preferably, a vacuum pump is installed on one side of the measuring box, an exhaust port is installed at a position close to the top of one side of the measuring box, and a hollow ring plate is installed on the inner wall of the exhaust port.

[0009] Preferably, a mounting ring is connected to one side of the hollow ring plate, a disassembly handle is installed on one side of the mounting ring, and a filter is installed inside the mounting ring.

[0010] Preferably, the hollow ring plate and the mounting ring are connected and mounted by screws, and the disassembly handles are symmetrically distributed about the central axis of the mounting ring.

[0011] Preferably, a second gear is installed at the front end of the control box, a rotating handle is connected to the front end of the second gear, a first gear is connected to one side of the second gear, and a cleaning plate is installed at one end of the first gear.

[0012] Preferably, a meshing transmission is formed between the first gear and the second gear, and cleaning cotton is installed on the back end of the cleaning plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the device for vacuum measuring and isolating residual oil in transformers not only improves the observation capability, but also improves the exhaust filtering capability and display screen cleaning capability of the device;

[0014] (1) The inclined plate and the horizontal plate are fixed and assembled at the bottom of the measuring box. The gravity sensor can detect the weight of the collecting tube. The oil settles at the funnel and the height of the residual oil settling within a certain period of time is recorded. Finally, the residual oil content is calculated based on the measured residual oil height. In this process, the vacuum pump can be used to draw the measuring box to a near-vacuum state. Then, the state of the oil in the funnel is observed at the observation window. After comparing with the marked line, the sedimentation change data is obtained. At the same time, the seeping oil is collected at the collecting tube, and its weight is also monitored by the gravity sensor and fed back to the display screen of the control box for display. In this way, the overall observation capability is improved during the work process.

[0015] (2) By fixing the hollow ring plate on the inner wall of the exhaust port, the connection and installation between the hollow ring plate and the mounting ring are completed by screws, and when exhausting at the exhaust port, the exhaust can be filtered through the filter screen, so that the exhaust filtering work is better completed during the exhaust process, which improves a certain degree of safety;

[0016] (3) By installing the first gear and the second gear at the front end of the control box respectively, when the display screen needs to be cleaned, the handle is held to rotate to drive the second gear to rotate. At this time, the second gear and the first gear are meshed with each other for transmission, and the first gear is connected and installed with the cleaning plate. At this time, the cleaning plate can be cleaned with cleaning cotton during the rotation process, thereby improving the overall cleaning ability during the work process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2It is a front structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the side structure of the cleaning plate of the utility model;

[0020] Figure 4 It is a schematic diagram of the side cross-sectional structure of the exhaust port of the utility model.

[0021] In the figure: 1. Measuring box; 2. Inclined plate; 3. Horizontal plate; 4. Collecting tube; 5. Gravity sensor; 6. Turning handle; 7. Cleaning plate; 8. Control box; 9. Funnel; 10. Exhaust port; 11. Vacuum pump; 12. Marking line; 13. Observation window; 14. First gear; 15. Second gear; 16. Cleaning cotton; 17. Hollow ring plate; 18. Filter; 19. Mounting ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] See also Figure 1-4 The utility model provides an embodiment: a device for vacuum measuring and isolating residual oil in a transformer, comprising a measuring box 1 and a control box 8. A funnel 9 is installed at the top of the measuring box 1, an observation window 13 is installed at the front end of the measuring box 1, and a marking line 12 is fixed to the outer wall of the funnel 9. An inclined plate 2 is installed at the bottom end of the measuring box 1, a horizontal plate 3 is installed on one side of the inclined plate 2, a collecting tube 4 is placed at the top of the horizontal plate 3, and a gravity sensor 5 is provided at the bottom end of the collecting tube 4.

[0024] The inclined plates 2 are symmetrically distributed about the central axis of the transverse plate 3 , and the inclined plates 2 and the transverse plate 3 are welded and fixed.

[0025] The top end size of the funnel 9 is larger than the bottom end size, and the funnel 9 is made of a transparent material.

[0026] A vacuum pump 11 is installed on one side of the measuring box 1 , an exhaust port 10 is installed near the top of one side of the measuring box 1 , and a hollow ring plate 17 is installed on the inner wall of the exhaust port 10 .

[0027] A mounting ring 19 is connected to one side of the hollow ring plate 17 , a disassembly handle is installed on one side of the mounting ring 19 , and a filter screen 18 is installed inside the mounting ring 19 .

[0028] The hollow ring plate 17 and the mounting ring 19 are connected and mounted by screws, and the disassembly handles are symmetrically distributed about the central axis of the mounting ring 19 .

[0029] A second gear 15 is installed at the front end of the control box 8 , a rotating handle 6 is connected to the front end of the second gear 15 , a first gear 14 is connected to one side of the second gear 15 , and a cleaning plate 7 is installed at one end of the first gear 14 .

[0030] The first gear 14 and the second gear 15 form a meshing transmission, and a cleaning cotton 16 is installed at the back end of the cleaning plate 7;

[0031] Further, a display screen is installed on the front face of the control box 8, and the display screen is used to display data, wherein the control box 8 can feedback and analyze the monitoring data of the gravity sensor 5;

[0032] Furthermore, the outer side wall of the observation window 13 is coated with an anti-scratch film, and the anti-scratch film can be used to protect the observation window 13 from scratches;

[0033] Further oil is poured into the position of the funnel 9, and then the oil settles at the position of the funnel 9, and the height of the residual oil settling within a certain period of time is recorded. In this process, the state of the oil in the funnel 9 can be observed at the position of the observation window 13, and an anti-corrosion layer is coated on the inner wall of the funnel 9, thereby ensuring the service life during use;

[0034] Furthermore, an inspection door is installed on the end face of the measuring box 1, which facilitates the placement and removal of the collecting tube 4, thereby facilitating multiple measurements. Further, an air pressure sensor is installed inside the measuring box 1, and the monitoring data is also fed back to the position of the control box 8.

[0035] Working principle: First, during the working measurement, pour the oil at the position of the funnel 9, and then the oil settles at the position of the funnel 9, record the height of the residual oil settling within a certain period of time, and finally calculate the residual oil content based on the measured residual oil height. In this process, the vacuum pump 11 can be used to draw the measuring box 1 to a state close to vacuum, and then the state of the oil in the funnel 9 is observed at the position of the observation window 13, and the sedimentation change data is obtained after comparison with the marked line 12. At the same time, the seeping oil is collected at the position of the collecting tube 4, and its weight is also monitored by the gravity sensor 5, and fed back to the display screen of the control box 8 to obtain the quantity data, thereby completing the measurement work.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "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.

Claims

1. A device for vacuum measuring and isolating residual oil in a transformer, comprising a measuring box (1) and a control box (8), characterized in that: A funnel (9) is installed at the top end of the measuring box (1), an observation window (13) is installed at the front end of the measuring box (1), a marking line (12) is fixed to the outer wall of the funnel (9), an inclined plate (2) is installed at the bottom end of the measuring box (1), a horizontal plate (3) is installed on one side of the inclined plate (2), a collecting tube (4) is placed at the top end of the horizontal plate (3), and a gravity sensor (5) is provided at the bottom end of the collecting tube (4).

2. The device for vacuum measuring and isolating residual oil in transformer according to claim 1, characterized in that: The inclined plates (2) are symmetrically distributed about the central axis of the transverse plate (3), and the inclined plates (2) and the transverse plate (3) are welded and fixed.

3. The device for vacuum measuring and isolating residual oil in transformer according to claim 1, characterized in that: The top end size of the funnel (9) is larger than the bottom end size, and the funnel (9) is made of a transparent material.

4. The device for vacuum measuring and isolating residual oil in transformer according to claim 1, characterized in that: A vacuum pump (11) is installed on one side of the measuring box (1), an exhaust port (10) is installed at a position close to the top of one side of the measuring box (1), and a hollow ring plate (17) is installed on the inner wall of the exhaust port (10).

5. The device for vacuum measuring and isolating residual oil in transformer according to claim 4, characterized in that: A mounting ring (19) is connected to one side of the hollow ring plate (17), a disassembly handle is installed on one side of the mounting ring (19), and a filter screen (18) is installed inside the mounting ring (19).

6. The device for vacuum measuring and isolating residual oil in transformer according to claim 5, characterized in that: The hollow ring plate (17) and the mounting ring (19) are connected and mounted by means of screws, and the disassembly handles are symmetrically distributed about the central axis of the mounting ring (19).

7. The device for vacuum measuring and isolating residual oil in transformer according to claim 1, characterized in that: A second gear (15) is mounted at the front end of the control box (8); a rotating handle (6) is connected to the front end of the second gear (15); a first gear (14) is connected to one side of the second gear (15); and a cleaning plate (7) is mounted at one end of the first gear (14).

8. The device for vacuum measuring and isolating residual oil in transformer according to claim 7, characterized in that: A meshing transmission is formed between the first gear (14) and the second gear (15), and a cleaning cotton (16) is installed at the back end of the cleaning plate (7).

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