Insulating oil leakage monitoring device

Abstract

The utility model discloses an insulating oil leakage monitoring device which comprises an oil inlet hose and an oil outlet hose which are arranged in parallel, automatic valves are arranged at the two ends of the oil inlet hose and the two ends of the oil outlet hose respectively, and a front mounting hole and a rear mounting hole are formed in the tail end of the oil inlet hose and the tail end of the oil outlet hose respectively in a staggered mode. Connecting sleeves are detachably connected to the interiors of the front mounting hole and the rear mounting hole, a flow meter and a pressure probe are installed in the connecting sleeves of the oil inlet hose and the oil outlet hose respectively, the flow meter, the pressure probe and the automatic valve are electrically connected with the electric control terminal through wires, and soft rubber pads are arranged at the bottoms of the connecting sleeves. According to the utility model, the automatic valve is closed through the electric control terminal, an operator can remotely control and observe the conveying state of the insulating oil, the connecting sleeve can be rotated to vertically move in the maintenance process until the connecting sleeve moves to the soft rubber mat to block the front and rear mounting holes, and then the flowmeter and the pressure probe are taken out along the connecting sleeve.

Description

TECHNICAL FIELD

[0001] The utility model relates to insulating oil leak detection technical field especially relates to a kind of insulating oil leakage monitoring devices. BACKGROUND

[0002] Vacuum oil filter is connected to transformer by hose, two leakages occur in this process, one is that connecting hose is off, and the connecting hose on transformer side or oil filter side is off, causing a large amount of insulating oil leakage, the second is that the oil filter body leaks somewhere, for example, the connection is not fastened or the valve is not closed tightly, resulting in a large amount of leakage of the oil filter body.

[0003] Among them, the off or damage of the connecting hose is the main reason for the leakage of a large amount of insulating oil. The connecting hose is divided into oil inlet and oil outlet hoses. The two pipes only function to transport insulating oil. When they are damaged and off, the leakage is mainly discovered by the transformer or vacuum oil filter during self-checking. It cannot be discovered in the first time and quickly blocked to continue leaking. It poses a great safety hazard to the working environment and surrounding equipment and operators. SUMMARY

[0004] The utility model patent aims to solve the problems in the prior art and provides a transformer oil injection level monitoring device to solve the problem of not timely discovery of insulating oil leakage in the prior art.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: an insulating oil leakage monitoring device includes two groups of parallelly arranged oil inlet hoses and oil outlet hoses, both ends of the oil inlet hoses and the oil outlet hoses are provided with automatic valves, the ends of the oil inlet hoses and the oil outlet hoses are respectively staggered with front mounting holes and rear mounting holes, the inside of the front mounting holes and the rear mounting holes is detachably connected with connecting sleeves, the connecting sleeves of the oil inlet hoses and the oil outlet hoses are respectively provided with flow meters and pressure probes, the flow meters, the pressure probes and the automatic valves are electrically connected with an electric control terminal through wires, and the bottom of the connecting sleeve is provided with a soft rubber pad.

[0006] Preferably, the connecting sleeve structure includes a limiting nut, the bottom of the limiting nut is provided with a hollow threaded rod, the front mounting hole and the rear mounting hole are provided with matching threads, and the front mounting hole and the rear mounting hole are detachably connected with the connecting sleeve through threads.

[0007] Preferably, a grid-shaped slot is formed in the end of the vertical surface of the hollow threaded rod close to the bottom half.

[0008] Preferably, the bottom of the slot is fixedly connected with a soft rubber pad.

[0009] Preferably, the soft rubber pad is a sheet structure made of flexible rubber material.

[0010] Preferably, the soft rubber pad edge position diameter is larger than the connecting sleeve outer diameter and extends horizontally, and the oil inlet hose and the oil discharge hose are provided with grooves matched with the soft rubber pad.

[0011] Preferably, the limit nut bottom is provided with a ring-shaped sealing ring outside the hollow threaded rod.

[0012] The utility model has the advantages of:

[0013] The utility model discloses a kind of automatic valve control systems, including automatic valve, oil inlet hose, oil discharge hose, flowmeter, pressure probe, electric control terminal and connecting sleeve, the automatic valve is connected to the oil inlet hose and the oil discharge hose, the flowmeter and the pressure probe are connected to the connecting sleeve, and the electric control terminal is connected to the flowmeter and the pressure probe, when leakage occurs, flowmeter and pressure probe signal is transmitted to electric control terminal, so that electric control terminal closes automatic valve, avoids the large-scale leakage of insulating oil caused by not timely monitoring after sending leakage, and through electric control terminal, operator can also remotely observe insulating oil delivery state, and in the maintenance process, connecting sleeve can be vertically moved by rotating connecting sleeve until moving to soft rubber pad plugging front, rear mounting hole, then flowmeter and pressure probe are extracted along connecting sleeve, the inside of soft tube is still closed state at this time, avoid that foreign matter enters soft tube interior and pollutes oil from the intercommunication of soft tube and outside. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is overall structure schematic diagram of the utility model;

[0015] Figure 2 It is pressure probe installation schematic diagram of the utility model;

[0016] Figure 3 It is connecting sleeve structure schematic diagram of the utility model;

[0017] Figure 4 It is flowmeter structure schematic diagram of the utility model;

[0018] Reference signs: 1, oil inlet hose;2, oil discharge hose;3, automatic valve;4, front mounting hole;5, rear mounting hole;6, connecting sleeve;7, pressure probe;8, flowmeter;61, limit nut;62, hollow threaded rod;63, soft rubber pad;64, slot. DETAILED DESCRIPTION

[0019] The utility model will be further described in detail in combination with the drawings and specific embodiment.

[0020] As Figure 1As shown, an insulating oil leakage monitoring device, comprising two groups of parallel arranged oil inlet hose 1 and oil discharge hose 2, both ends of the oil inlet hose 1 and the oil discharge hose 2 are provided with automatic valve 3, the ends of the oil inlet hose 1 and the oil discharge hose 2 are staggered provided with front mounting hole 4 and rear mounting hole 5, respectively, the inside of the front mounting hole 4 and the rear mounting hole 5 is detachably connected with the connecting sleeve 6, the connecting sleeve 6 of the oil inlet hose 1 and the oil discharge hose 2 is respectively provided with flow meter 8 and pressure probe 7, the flow meter 8, the pressure probe 7 and the automatic valve 3 are electrically connected through wires and the electric control terminal, the bottom of the connecting sleeve 6 is provided with soft rubber pad 63, two connecting sleeves 6 in the embodiment are respectively provided with pressure probe 7 and flow meter 8, the automatic valve 3, the pressure probe 7 and the flow meter 8 are electrically connected with the external electric control terminal device, wherein the pressure probe 7 and the flow meter 8 are provided with maximum and minimum working range warning, when the flow meter 8 and the pressure probe 7 detect that the flow or pressure drops suddenly, the electric control terminal can directly control the automatic valve 3 to close to block the insulating oil from continuing to leak, and when the hose is damaged due to leakage, the slowly decreasing flow and pressure can still be monitored and transmitted to the electric control terminal to close the automatic valve 3.

[0021] Preferably, the connecting sleeve 6 structure includes a limiting nut 61, the bottom of the limiting nut 61 is provided with a hollow threaded rod 62, the front mounting hole 4 and the rear mounting hole 5 are provided with matching threads, the front mounting hole 4 and the rear mounting hole 5 are detachably connected with the connecting sleeve 6 through threads, in this embodiment, the connecting sleeve 6 is detachably connected with the mounting hole 5 through threads, wherein the limiting nut 61 is hollow for installing the flow meter 8 or the pressure probe 7, when in use, the flow meter 8 or the pressure probe 7 passes through the hollow nut and the hollow threaded rod at the bottom to enter the pipeline for data monitoring, when installing, the connecting sleeve 6 is screwed into the fixing through the internal threads in the front mounting hole 4 and the rear mounting hole 5, and then the flow meter 8 or the pressure probe 7 is installed after the limiting nut 61 is screwed tightly.

[0022] Preferably, the vertical surface of the hollow threaded rod 62 is provided with a grid-shaped slot 64 near one end of the bottom half, in this embodiment, the vertical surface of the hollow threaded rod 62 is provided with a grid-shaped slot near one end of the bottom half, which ensures that the connecting sleeve 6 will not block the normal flow of insulating oil when it is located inside the hose, and the pressure probe 7 or the flow meter 8 in the connecting sleeve 6 can work normally, the detection part of the pressure probe 7 and the flow meter 8 is close to the side of the connecting sleeve 6 where the slot is opened, which ensures that the detection part can directly contact the insulating oil entering the connecting sleeve 6 through the slot.

[0023] Preferably, the soft rubber pad 63 is fixedly connected to the bottom of the slot 64, and the top of the soft rubber pad 9 is fixedly connected to the connecting sleeve 6 during installation. The edge position of the soft rubber pad 9 has a diameter larger than the outer diameter of the connecting sleeve 6 and extends horizontally. The soft rubber pad 9 can be fully deformed when receiving pressure, and the bottom of the connecting sleeve 6 contacts the inner wall of the soft rubber pad 9 when moving vertically to avoid damaging the soft rubber pad.

[0024] Preferably, the soft rubber pad 9 is a sheet structure made of flexible rubber material. The flexible material can deform more fully when receiving pressure.

[0025] The edge position of the soft rubber pad 63 has a diameter larger than the outer diameter of the connecting sleeve 6 and extends horizontally. The inner walls of the oil inlet hose 1 and the oil outlet hose 2 are provided with grooves adapted to the soft rubber pad 9. The flexible material can be fully deformed when receiving pressure, and the bottom of the connecting sleeve 6 contacts the inner wall of the soft rubber pad 9 when moving vertically to avoid damaging the soft rubber pad. The soft rubber pad 9 can enter the groove when close to the inner wall of the oil inlet hose 1 and the oil outlet hose 2 under the action of pressure, thereby closing the front mounting hole 4 and the rear mounting hole 5 to avoid oil leakage.

[0026] Preferably, a ring-shaped sealing ring is arranged at the bottom of the limiting nut 61 outside the hollow threaded rod 62. During use, the ring-shaped sealing ring is arranged at the bottom of the limiting nut 61 outside the top of the hollow threaded rod 62 to prevent oil in the oil inlet hose 1 and the oil outlet hose 2 from overflowing from the mounting hole.

[0027] The specific working mode of the present application is as follows: when the oil inlet hose 1 leaks, the flowmeter 8 senses a sudden drop in the flow of insulating oil, sends a signal to the electric control terminal, and the electric control terminal sends a signal to close the automatic valve 3 to stop the delivery of insulating oil. When the oil outlet hose 2 leaks, the pressure probe 7 senses a sudden drop in the pressure of the insulating oil, sends a signal to the electric control terminal, and the electric control terminal sends a signal to close the automatic valve 3 to stop the delivery of insulating oil. The operator can remotely operate the opening and closing of the automatic valve 3 and monitor the flowmeter 8 and the pressure probe 7 through the electric control terminal. After long-term use, the pressure probe 7 and the flowmeter 8 need to be repaired and replaced. The operator rotates the connecting sleeve 6 to move the connecting sleeve 6 upward along the front mounting hole 4 or the rear mounting hole 5. In the moving process, the soft rubber pad 9 moves with it until the connecting sleeve 6 drives the detection part of the pressure probe 7 or the flowmeter 8 to move out of the soft rubber pad 9. At this time, the soft rubber pad 9 blocks the front mounting hole 4 and the rear mounting hole 5, and the inside of the soft rubber pad 9 is always in a closed state. In the closed state, the oil inlet hose 1 and the oil outlet hose 2 can continue to deliver insulating oil in an emergency state, or remain in a closed state waiting for repair. During the repair process, foreign matter cannot enter the inside of the oil inlet hose 1 and the oil outlet hose 2.

[0028] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limiting the present application, and the protection scope of the present application should be the technical solutions recited in the claims, including the equivalent replacement solutions of the technical features recited in the claims as the protection scope. That is, the equivalent replacement improvements within the scope are also within the protection scope of the present application.

Claims

1. An insulating oil leakage monitoring device, comprising two sets of parallel-arranged oil inlet hoses (1) and oil outlet hoses (2), characterized in that, Automatic valves (3) are provided at both ends of the oil inlet hose (1) and the oil outlet hose (2). The ends of the oil inlet hose (1) and the oil outlet hose (2) are respectively provided with front mounting holes (4) and rear mounting holes (5). Connecting sleeves (6) can be detachably connected inside the front mounting holes (4) and the rear mounting holes (5). Flow meters (8) and pressure probes (7) are respectively installed in the connecting sleeves (6) of the oil inlet hose (1) and the oil outlet hose (2). The flow meters (8), pressure probes (7) and automatic valves (3) are all electrically connected to the electrical control terminal through wires. A soft rubber pad (63) is provided at the bottom of the connecting sleeve (6).

2. The insulating oil leakage monitoring device according to claim 1, characterized in that: The connecting sleeve (6) structure includes a limiting nut (61), a hollow threaded rod (62) is provided at the bottom of the limiting nut (61), and matching threads are provided in the front mounting hole (4) and the rear mounting hole (5). The connecting sleeve (6) is detachably connected in the front mounting hole (4) and the rear mounting hole (5) through the threads.

3. The insulating oil leakage monitoring device according to claim 2, characterized in that: The hollow threaded rod (62) has a grid-like through slot (64) on the vertical surface near the bottom half.

4. The insulating oil leakage monitoring device according to claim 3, characterized in that: A soft rubber pad (63) is fixedly connected to the bottom of the groove (64).

5. The insulating oil leakage monitoring device according to claim 4, characterized in that: The soft rubber pad (63) is a sheet structure made of flexible rubber material.

6. The insulating oil leakage monitoring device according to claim 5, characterized in that: The edge diameter of the soft rubber pad (63) is larger than the outer diameter of the connecting sleeve (6) and extends in the horizontal direction. The inner walls of the oil inlet hose (1) and the oil outlet hose (2) are both provided with grooves that are adapted to the soft rubber pad (63).

7. The insulating oil leakage monitoring device according to claim 2, characterized in that: The bottom of the limiting nut (61) is provided with a ring-shaped sealing ring on the outer periphery of the hollow threaded rod (62).

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