An oil level gauge for a transformer

Abstract

The utility model discloses a transformer oil level meter, including integrative shell, the bottom of shell is equipped with outer thread, is equipped with Type C female seat on the shell, is equipped with sealing gum between one end of Type C female seat and the inner side wall of shell, is installed with sealing washer between Type C female seat and shell, the outside of Type C female seat is connected with fixed cylinder, and the inner side wall of fixed cylinder is equipped with contraction part, is equipped with a plurality of first screw on Type C female seat, a plurality of first screw are in proper order and pass Type C female seat and sealing washer and are connected with the thread of shell, and the side insertion of Type C female seat has Type C plug, and the outside of Type C plug is equipped with convex ring, and one side of Type C plug is equipped with fourth sealing washer, the utility model discloses the sealing gum and sealing washer that set up between the shell and Type C female seat are sealed to Type C female seat and Type C plug are sealed through the fourth sealing washer that set up, improve the leakproofness greatly, avoid the emergence leak condition, lead to the outside air to enter transformer.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil level gauge technical field, specifically is an oil level gauge for transformer. BACKGROUND

[0002] The transformer oil level gauge is a device for measuring and displaying the oil level height in the transformer oil tank, and the existence of the oil level gauge can timely find the oil level abnormality, remind the operator to handle, and prevent the occurrence of transformer failure.

[0003] The shell of the existing oil level gauge is usually split type, and the sealing performance is poor, especially at the communication interface, leakage is prone to occur, which leads to the entry of external air into the transformer, and may cause the explosion of the transformer, and has great safety hidden danger. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an oil level gauge for transformer to solve the problems in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: an oil level gauge for transformer, which comprises an integrally-formed shell, the bottom of the shell is provided with external threads, a Type-C female seat is arranged on the shell, sealing glue is arranged between one end of the Type-C female seat and the inner side wall of the shell, a sealing gasket is arranged between the Type-C female seat and the shell, a fixing cylinder is threadedly connected to the outer side of the Type-C female seat, the inner side wall of the fixing cylinder is provided with a contraction part, a plurality of first screws are arranged on the Type-C female seat, the plurality of first screws are sequentially threaded through the Type-C female seat and the sealing gasket and are threadedly connected to the shell, a Type-C plug is inserted into one side of the Type-C female seat, a convex ring is arranged on the outer side of the Type-C plug, and a fourth sealing ring is arranged on one side of the Type-C plug.

[0006] As a preferred scheme of the utility model, the outer diameter of the convex ring is greater than the inner diameter of the contraction part, and the outer diameter of the convex ring is less than the inner diameter of the fixing cylinder.

[0007] As a preferred scheme of the utility model, a connecting sleeve is threadedly connected to the outer side of the Type-C plug, a screw hole is formed in the connecting sleeve, and a cable is arranged on one end of the Type-C plug.

[0008] As a preferred scheme of the utility model, a plurality of viewing windows are uniformly formed on the outer side of the shell in the circumferential direction, a glass cylinder corresponding to the viewing windows is arranged on the inner side wall of the shell, a third sealing ring is arranged between the glass cylinder and the viewing window, and a snap ring is arranged on the inner side wall of the shell.

[0009] As one preferred scheme of the utility model, the top of the shell is threadedly connected with an upper cover, the top of the upper cover is threadedly connected with a pressure relief valve, a first sealing ring is arranged between the pressure relief valve and the upper cover, and a second sealing ring is arranged between the shell and the upper cover.

[0010] As one preferred scheme of the utility model, the bottom of the shell is fixedly provided with a fixed block, a limiting cylinder is arranged in the middle of the fixed block, a sliding rod is slidably arranged in the limiting cylinder, the two ends of the sliding rod extend to the outside of the limiting cylinder, a float is arranged at the bottom of the sliding rod, two indicating cylinders are arranged at the top of the sliding rod, a detection block is arranged at the top of the indicating cylinder, and a limiting ring is fixedly connected to the outside of the sliding rod, and the outer diameter of the limiting ring is greater than the inner diameter of the limiting cylinder.

[0011] As one preferred scheme of the utility model, a protective shell is arranged on the inner side wall of the shell, a circuit board is arranged in the protective shell, a distance sensor is arranged at the bottom of the circuit board, and the distance sensor and the detection block are arranged on the same straight line.

[0012] As one preferred scheme of the utility model, a probe type temperature sensor is arranged on the outside of the protective shell, and one end of the probe type temperature sensor extends to the inside of the float through the protective shell, the circuit board, the glass cylinder, the detection block, the indicating cylinder and the sliding rod in sequence.

[0013] As one preferred scheme of the utility model, a chip is arranged at the top of the circuit board, and the probe type temperature sensor, the distance sensor and the Type-C female seat are electrically connected with the chip.

[0014] As one preferred scheme of the utility model, a fixing hole is arranged on the protective shell and the probe type temperature sensor, a second screw is arranged on the protective shell, and one end of the second screw is threadedly connected with the shell through the fixing hole.

[0015] Compared with the prior art, the utility model has the advantages that the sealing glue and the sealing gasket are arranged between the shell and the Type-C female seat, the fourth sealing ring is arranged between the Type-C female seat and the Type-C plug, the sealing property is greatly improved, the leakage is avoided, the external air is prevented from entering the transformer, the integrally formed shell is easier to seal, the sealing effect is better than that of the split shell in the prior art, the Type-C interface is adopted, the interface size is smaller than that in the prior art, and the utility model is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0017] Figure 2The cross-sectional view of the utility model;

[0018] Figure 3 The utility model Figure 2 The enlarged view of A in the middle;

[0019] Figure 4 The utility model Figure 1 The explosion view of the utility model;

[0020] Figure 5 The utility model Figure 4 The enlarged view of B in the middle;

[0021] Figure 6 The cross-sectional view of the utility model shell;

[0022] Figure 7 The structure schematic view of the utility model Type-C plug;

[0023] Figure 8 The structure schematic view of the utility model circuit board.

[0024] In the figure: 1, shell; 2, upper cover; 3, pressure relief valve; 4, fixed cylinder; 5, first screw; 6, glass cylinder; 7, window; 8, external thread; 9, float; 10, sliding rod; 11, screw hole; 12, cable; 13, connecting sleeve; 14, first sealing ring; 15, second sealing ring; 16, protective shell; 17, circuit board; 18, distance sensor; 19, probe type temperature sensor; 20, snap ring; 21, third sealing ring; 22, detection block; 23, indicating cylinder; 24, limiting ring; 25, limiting cylinder; 26, fixed block; 27, sealing glue; 28, Type-C female seat; 29, fourth sealing ring; 30, convex ring; 31, Type-C plug; 32, second screw; 33, fixed hole; 34, chip; 35, sealing gasket; 36, contraction part. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figures 1 to 8The utility model provides a technical scheme: a transformer oil level gauge, including integrative shell 1, integrative structure is more easy to seal, compared with split type shell sealing effect is better in prior art, the material of shell 1 is aluminium alloy, to ensure that shell 1 has enough structural strength, the bottom of shell 1 is equipped with outer thread 8, shell 1 is connected with transformer through outer thread 8, shell 1 is equipped with Type C female seat 28, one end between Type C female seat 28 and the inner side wall of shell 1 is equipped with sealing gum 27, the wire on Type C female seat 28 passes through sealing gum 27 and is connected with circuit board 17, sealing gum 27 and sealing washer 35 are used to seal between shell 1 and Type C female seat 28, avoid the emergence of leakage, lead to external air into transformer, sealing washer 35 is installed between Type C female seat 28 and shell 1, the outer side of Type C female seat 28 is connected with fixed cylinder 4, the inner side wall of fixed cylinder 4 is equipped with shrinkage 36, Type C female seat 28 is equipped with a plurality of first screw 5, a plurality of first screw 5 are in turn connected with shell 1 through Type C female seat 28 and sealing washer 35, first screw 5 is used for fixing Type C female seat 28 on shell 1, and under the action of first screw 5, Type C female seat 28 and shell 1 will compress sealing washer 35, to improve the sealing effect of sealing washer 35, one side of Type C female seat 28 is inserted with Type C plug 31, the outer side of Type C plug 31 is equipped with convex ring 30, one side of Type C plug 31 is equipped with fourth sealing ring 29, and fourth sealing ring 29 is used to improve the sealing property between Type C female seat 28 and Type C plug 31.

[0027] Wherein, the outer diameter of convex ring 30 is greater than the inner diameter of shrinkage 36, so that convex ring 30 cannot pass through shrinkage 36, the outer diameter of convex ring 30 is less than the inner diameter of fixed cylinder 4 so that fixed cylinder 4 can pass through convex ring 30, when fixed cylinder 4 is sleeved on the outer side of Type C plug 31 and is connected with Type C female seat 28, since convex ring 30 cannot pass through shrinkage 36, therefore fixed cylinder 4 applies the thrust to Type C plug 31 through shrinkage 36 and convex ring 30, makes Type C plug 31 close tightly Type C female seat 28, not only ensure that Type C plug 31 is connected firmly with Type C female seat 28, and under the action thereof, Type C plug 31 and Type C female seat 28 will compress fourth sealing ring 29, to improve the sealing effect of fourth sealing ring 29.

[0028] The outer side of the Type-C plug 31 is threadedly connected with a connecting sleeve 13, the connecting sleeve 13 is provided with a screw hole 11, in actual use, the outer side of the cable 12 is further sleeved with a bellows, the one end of the bellows is inserted into the connecting sleeve 13, and then a screw is screwed into the screw hole 11, thereby the bellows can be fixed, one end of the Type-C plug 31 is provided with the cable 12, and the cable 12 is used for transmitting data.

[0029] The outer side of the shell 1 is uniformly provided with a plurality of windows 7 in the circumferential direction, the inner side wall of the shell 1 is provided with glass cylinders 6 corresponding to the windows 7, the third sealing ring 21 is arranged between the glass cylinders 6 and the windows 7, the inner side wall of the shell 1 is provided with the snap ring 20, the snap ring 20 is used for fixing the glass cylinders 6, and the third sealing ring 21 is used for improving the sealing between the glass cylinders 6 and the shell 1, so that the leakage is prevented.

[0030] The top of the shell 1 is threadedly connected with the upper cover 2, the top of the upper cover 2 is threadedly connected with the pressure relief valve 3, when the pressure of the transformer oil exceeds a threshold value, the pressure relief valve 3 is opened to reduce the pressure of the transformer oil, so that the safety is improved, the first sealing ring 14 is arranged between the pressure relief valve 3 and the upper cover 2, the first sealing ring 14 is used for improving the sealing between the pressure relief valve 3 and the upper cover 2, and the second sealing ring 15 is arranged between the shell 1 and the upper cover 2, the second sealing ring 15 is used for improving the sealing between the upper cover 2 and the shell 1.

[0031] The bottom of the shell 1 is fixedly provided with the fixed block 26, the middle of the fixed block 26 is provided with the limiting cylinder 25, the limiting cylinder 25 is used for limiting the sliding rod 10, so that the sliding rod 10 is prevented from deviating when moving, the sliding rod 10 is slidably arranged in the limiting cylinder 25, both ends of the sliding rod 10 extend to the outside of the limiting cylinder 25, the bottom of the sliding rod 10 is provided with the float 9, the float 9 floats up and down along with the change of the oil level of the transformer oil, the float 9 drives the indicating cylinder 23 to float up and down through the sliding rod 10, the top of the sliding rod 10 is provided with two indicating cylinders 23, the upper indicating cylinder 23 is red, and the lower indicating cylinder 23 is blue, when the height of the transformer oil is low, the window 7 displays red, when the height of the transformer oil is normal, the window 7 displays blue, the top of the indicating cylinder 23 is provided with the detection block 22, the detection block 22 can reflect the signal emitted by the distance sensor 18, so that the distance sensor 18 can detect, the outer side of the sliding rod 10 is fixedly connected with the limiting ring 24, the outer diameter of the limiting ring 24 is greater than the inner diameter of the limiting cylinder 25, so that the limiting ring 24 cannot pass through the limiting cylinder 25, the sliding rod 10 is limited, and when the height of the transformer oil is very low, the indicating cylinder 23 is prevented from moving downward too much, so that the indicating cylinder 23 cannot be observed at the window 7.

[0032] The inner side wall of the shell 1 is provided with a protective shell 16, which is used for protecting and fixing the circuit board 17. The protective shell 16 is internally provided with the circuit board 17. The bottom of the circuit board 17 is provided with a distance sensor 18. The signal emitted by the distance sensor 18 is reflected by the detection block 22, so that the distance between the distance sensor 18 and the detection block 22 can be measured. The detection block 22 moves with the float 9, so that the distance sensor 18 can measure the height of the transformer oil. The distance sensor 18 and the detection block 22 are in the same straight line.

[0033] The outer side of the protective shell 16 is provided with a probe type temperature sensor 19, which is used for detecting the temperature of the transformer oil. One end of the probe type temperature sensor 19 extends to the inside of the float 9 through the protective shell 16, the circuit board 17, the glass cylinder 6, the detection block 22, the indicating cylinder 23, and the sliding rod 10 in sequence. The detection block 22, the indicating cylinder 23, the sliding rod 10, and the float 9 are not in contact with the probe type temperature sensor 19.

[0034] The top of the circuit board 17 is provided with a chip 34. The chip 34 is used for processing the data detected by the probe type temperature sensor 19 and the distance sensor 18 and transmitting the data to the Type-C female socket 28. The data is transmitted to the outside through the Type-C female socket 28, the Type-C male plug 31, and the cable 12. The probe type temperature sensor 19, the distance sensor 18, and the Type-C female socket 28 are electrically connected with the chip 34.

[0035] The protective shell 16 and the probe type temperature sensor 19 are both provided with fixing holes 33. The protective shell 16 is provided with a second screw 32. The second screw 32 fixes the protective shell 16 and the probe type temperature sensor 19 on the shell 1. One end of the second screw 32 is threadedly connected with the shell 1 through the fixing hole 33.

[0036] Specific, installation, shell 1 through the outer thread 8 and transformer connection, then the Type-C plug 31 is inserted into the Type-C socket 28, and then the fixed cylinder 4 is screwed into the Type-C socket 28 after passing through the Type-C plug 31, ensure that the Type-C plug 31 and the Type-C socket 28 are connected firmly, and then the connecting sleeve 13 is screwed onto the Type-C plug 31 through the cable 12, in use, the float 9 will float up and down with the transformer oil level, the float 9 will drive the indicating cylinder 23 up and down through the slide rod 10, when the height of the transformer oil is low, the red indicating cylinder 23 moves to the window 7, the window 7 will display red, when the height of the transformer oil is normal, the blue indicating cylinder 23 moves to the window 7, the window 7 will display blue, the data detected by the distance sensor 18 and the probe type temperature sensor 19 will be transmitted to the chip 34, and the chip 34 will transmit the data to the outside through the Type-C socket 28, Type-C plug 31 and cable 12, so that the staff can remotely monitor.

[0037] In the description of the present application, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0038] In addition, the terms "first", "second", "third", "fourth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features, therefore, the features with "first", "second", "third", "fourth" can be explicitly or implicitly included at least one of the features.

[0039] In the present application, unless otherwise specified and limited, the terms "installation", "setting", "connection", "fixing", "threading" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specified, the above-mentioned terms in the present application can be understood according to the specific meaning of the above-mentioned terms in the present application according to the specific situation.

[0040] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil level gauge for a transformer, characterized by The application relates to a Type-C connector, which comprises an integrally-formed shell (1), the bottom of the shell (1) is provided with external threads (8), a Type-C female seat (28) is arranged on the shell (1), a sealing glue (27) is arranged between one end of the Type-C female seat (28) and the inner side wall of the shell (1), a sealing gasket (35) is arranged between the Type-C female seat (28) and the shell (1), a fixing cylinder (4) is threadedly connected to the outer side of the Type-C female seat (28), the inner side wall of the fixing cylinder (4) is provided with a contraction part (36), a plurality of first screws (5) are arranged on the Type-C female seat (28), the first screws (5) are sequentially threadedly connected to the Type-C female seat (28), the sealing gasket (35) and the shell (1), a Type-C plug (31) is inserted into one side of the Type-C female seat (28), the outer side of the Type-C plug (31) is provided with a convex ring (30), and the one side of the Type-C plug (31) is provided with a fourth sealing ring (29).

2. An oil level gauge for a transformer according to claim 1, characterized in that: The outer diameter of the convex ring (30) is larger than the inner diameter of the contraction part (36), and the outer diameter of the convex ring (30) is smaller than the inner diameter of the fixing cylinder (4).

3. An oil level gauge for a transformer according to claim 1, characterized in that: The outer side of the Type-C plug (31) is threadedly connected with a connecting sleeve (13), the connecting sleeve (13) is provided with a screw hole (11), and one end of the Type-C plug (31) is provided with a cable (12).

4. An oil level gauge for a transformer according to claim 1, characterized in that: A plurality of windows (7) are uniformly arranged on the outer side of the shell (1) in the circumferential direction, a glass cylinder (6) corresponding to the windows (7) is arranged on the inner side wall of the shell (1), a third sealing ring (21) is arranged between the glass cylinder (6) and the window (7), and a snap ring (20) is arranged on the inner side wall of the shell (1).

5. An oil level gauge for a transformer according to claim 1, characterized in that: An upper cover (2) is threadedly connected to the top of the shell (1), a pressure relief valve (3) is threadedly connected to the top of the upper cover (2), a first sealing ring (14) is arranged between the pressure relief valve (3) and the upper cover (2), and a second sealing ring (15) is arranged between the shell (1) and the upper cover (2).

6. An oil level gauge for a transformer according to claim 1, characterized in that: A fixing block (26) is fixedly arranged on the bottom of the shell (1), a limiting cylinder (25) is arranged in the middle of the fixing block (26), a sliding rod (10) is slidably arranged in the limiting cylinder (25), the two ends of the sliding rod (10) extend to the outer side of the limiting cylinder (25), a float (9) is arranged on the bottom of the sliding rod (10), two indicating cylinders (23) are arranged on the top of the sliding rod (10), a detection block (22) is arranged on the top of the indicating cylinder (23), a limiting ring (24) is fixedly connected to the outer side of the sliding rod (10), and the outer diameter of the limiting ring (24) is larger than the inner diameter of the limiting cylinder (25).

7. An oil level gauge for a transformer according to claim 6, characterised in that: A protection shell (16) is arranged on the inner side wall of the shell (1), a circuit board (17) is arranged in the protection shell (16), a distance sensor (18) is arranged on the bottom of the circuit board (17), and the distance sensor (18) is arranged on the same straight line as the detection block (22).

8. An oil level gauge for a transformer according to claim 7, characterised in that: The outer side of the protective shell (16) is provided with a probe type temperature sensor (19), one end of the probe type temperature sensor (19) extends to the inside of the float (9) through the protective shell (16), the circuit board (17), the glass cylinder (6), the detection block (22), the indicating cylinder (23) and the sliding rod (10) in sequence.

9. An oil level gauge for a transformer according to claim 8, characterised in that: The top of the circuit board (17) is provided with a chip (34), and the probe type temperature sensor (19), the distance sensor (18) and the Type-C female seat (28) are electrically connected with the chip (34).

10. An oil level gauge for a transformer according to claim 8, characterized in that: The protective shell (16) and the probe type temperature sensor (19) are both provided with fixing holes (33), and the protective shell (16) is provided with a second screw (32), one end of the second screw (32) is screwed with the shell (1) through the fixing hole (33).

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