Oil supply system of oil transformer

Abstract

The utility model relates to the technical field of oil supply systems, in particular to an oil supply system of an oil transformer, which comprises the oil transformer, an oil inlet and an oil outlet are arranged on the oil transformer, and butterfly valves are arranged on the oil inlet and the oil outlet. The butterfly valve comprises a valve body, a valve plate and a valve rod which are fixedly connected are arranged in the valve body, and a valve seat is arranged on the side portion of the valve body. The top of the valve rod is located on the outer side of the valve seat. The top of the valve rod is fixedly connected with a linear screwing head used for being connected with a wrench. A protective cap is detachably connected to the valve seat, and a linear groove used for being connected with the linear screwing head in a clamped mode when the butterfly valve is in an open state is formed in the protective cap. According to the butterfly valve, the linear groove is formed in the protective cap, so that when the butterfly valve is in a closed state, the protective cap cannot be installed on the valve seat; therefore, the problem that the top of the valve rod on the butterfly valve is covered by the protective cap and the butterfly valve is forgotten to be opened after being closed to cause danger is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil supply systems, in particular to an oil supply system for an oil transformer. Background Art

[0002] The oil inlet and outlet of the oil transformer are both equipped with butterfly valves, and the butterfly valves are provided with valve stems for opening and closing the valves. The valve stems are generally provided with protective caps, which are installed during operation as an effective measure to prevent false operation. When the oil transformer or pipeline is being repaired, the valve needs to be closed, and the valve needs to be opened after the repair. However, the top of the valve stem is covered by the protective cap, and the valve position cannot be observed, so there is a possibility that the valve is forgotten to be opened. Using the oil transformer when the valve is forgotten to be opened will cause the transformer oil temperature to fail to decrease, and the transformer will be in danger. Utility Model Content

[0003] The main purpose of the utility model is to provide an oil transformer oil supply system to solve the problem in the prior art that the top of the valve stem on the butterfly valve is covered by a protective cap, which may cause the valve to be forgotten to be opened.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an oil supply system for an oil transformer, including an oil transformer, which is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are provided with butterfly valves; the butterfly valve includes a valve body, a valve plate and a valve stem fixedly connected thereto are provided inside the valve body, and a valve seat is provided on the side of the valve body; the top of the valve stem is located outside the valve seat; a straight-shaped screw joint for connecting to a wrench is fixedly connected to the top of the valve stem; a protective cap is detachably connected to the valve seat, and a straight-shaped groove is provided inside the protective cap for clamping with the straight-shaped screw joint when the butterfly valve is in an open state.

[0005] Furthermore, a sealing gasket is connected between the protective cap and the valve seat.

[0006] Furthermore, the protective cap is connected to the valve seat by bolts.

[0007] Furthermore, the oil inlet and the oil outlet are respectively connected to a radiator through pipelines.

[0008] Furthermore, a bearing and a sealing filler are connected between the valve body and the valve stem.

[0009] Furthermore, the protective cap and the valve seat are connected by a connecting rope.

[0010] The utility model provides a straight groove inside the protective cap for engaging with the straight screw joint when the butterfly valve is in the open state, so that the protective cap cannot be installed on the valve seat when the butterfly valve is in the closed state; thereby avoiding the problem that the top of the valve stem on the butterfly valve is covered by the protective cap and the butterfly valve is forgotten to be opened after being closed, which may cause a danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0012] Figure 1 Schematic diagram of the structure of the oil supply system of the oil-fired transformer in the embodiment;

[0013] Figure 2 Schematic diagram of the local structure of the butterfly valve in the embodiment;

[0014] Figure 3 This is a schematic structural diagram of the protective cap in the embodiment;

[0015] Figure 4 Schematic diagram of the bottom view of the protective cap in the embodiment;

[0016] Figure 5 Schematic diagram of the structure of the sealing gasket in the embodiment;

[0017] In the figure: 1. Oil transformer; 101. Oil inlet; 102. Oil outlet; 2. Butterfly valve; 201. Valve body; 201a. Valve seat; 202. Valve plate; 203. Valve stem; 204. S-type screw joint; 205. Bearing; 206. Sealing packing; 3. Protective cap; 301. S-type groove; 4. Bolt; 5. Radiator; 6. Connecting rope; 7. Sealing gasket. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] like Figures 1 to 4 As shown, according to an embodiment of the present utility model, an oil transformer oil supply system is provided, including an oil transformer 1, an oil inlet 101 and an oil outlet 102 are provided on the oil transformer 1, and a butterfly valve 2 is provided on the oil inlet 101 and the oil outlet 102; the oil inlet 101 and the oil outlet 102 are respectively connected to a radiator 5 through a pipeline; the butterfly valve 2 includes a valve body 201, a valve plate 202 and a valve stem 203 are fixedly connected inside the valve body 201, and a valve seat 201a is provided on the side of the valve body 201; the top of the valve stem 203 is located on the outside of the valve seat 201a; the top of the valve stem 203 is fixedly connected to a straight-line screw joint 204 for connecting with a wrench; a protective cap 3 is detachably connected to the valve seat 201a, and a straight-line groove 301 is provided inside the protective cap 3 for clamping with the straight-line screw joint 204 when the butterfly valve 2 is in an open state.

[0020] like Figure 3 and Figure 5As shown, in some embodiments, a sealing gasket 7 is further connected between the protective cap 3 and the valve seat 201a.

[0021] like Figure 3 As shown, in some embodiments, the protective cap 3 is connected to the valve seat 201 a via bolts 4 .

[0022] like Figure 2 As shown, in some embodiments, a bearing 205 and a sealing packing 206 are connected between the valve body 201 and the valve stem 203 .

[0023] like Figure 3 As shown, in some embodiments, the protective cap 3 and the valve seat 201a are connected by a connecting rope 6, thereby preventing the protective cap 3 from being lost.

[0024] The position of the I-shaped screw joint 204 at the top of the valve stem 203 is different when the butterfly valve 2 is in the open state or the closed state; the above embodiment provides an I-shaped groove 301 inside the protective cap 3 for engaging with the I-shaped screw joint 204 when the butterfly valve 2 is in the open state, so that when the butterfly valve 2 is in the closed state, the protective cap 3 cannot be installed on the valve seat 201a; thereby avoiding the problem that the top of the valve stem 201 on the butterfly valve 2 is covered by the protective cap 3, and the butterfly valve 2 is forgotten to be opened after being closed, causing a dangerous situation.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An oil transformer oil supply system, comprising an oil transformer (1), wherein the oil transformer (1) is provided with an oil inlet (101) and an oil outlet (102), and the oil inlet (101) and the oil outlet (102) are provided with butterfly valves (2); the butterfly valve (2) comprises a valve body (201), wherein a valve plate (202) and a valve stem (203) are fixedly connected and provided inside the valve body (201), and a valve seat (201a) is provided on the side of the valve body (201); the top of the valve stem (203) is located outside the valve seat (201a); and the invention is characterized in that: The top of the valve stem (203) is fixedly connected to a straight-line screw joint (204) for connecting to a wrench; a protective cap (3) is detachably connected to the valve seat (201a), and a straight-line groove (301) is provided inside the protective cap (3) for engaging with the straight-line screw joint (204) when the butterfly valve (2) is in an open state.

2. The oil transformer oil supply system according to claim 1, characterized in that: A sealing gasket (7) is also connected between the protective cap (3) and the valve seat (201a).

3. The oil transformer oil supply system according to claim 1, characterized in that: The protective cap (3) is connected to the valve seat (201a) via bolts (4).

4. The oil transformer oil supply system according to claim 1, characterized in that: The oil inlet (101) and the oil outlet (102) are respectively connected to a radiator (5) via pipelines.

5. The oil transformer oil supply system according to claim 1, characterized in that: A bearing (205) and a sealing filler (206) are connected between the valve body (201) and the valve stem (203).

6. The oil transformer oil supply system according to claim 1, characterized in that: The protective cap (3) and the valve seat (201a) are connected via a connecting rope (6).

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