CN208237263U - A kind of transformer or reactor are with taking oily transit joint - Google Patents

Abstract

The utility model discloses an oil-taking transition joint for a transformer or a reactor. The transition joint is sleeved on the oil-taking joint; the transition joint includes a hollow cylinder structure joint body and a transition rubber sleeve and a hard thin tube arranged in the hollow cylinder structure joint body; After opening the transition joint of the transformer or reactor, set a transition joint to connect to the original position of the oil joint, connect the oil pipe through the connection cavity, seal and cover the oil outlet head through the transition rubber sleeve, so that the oil outlet hole The oil can be discharged in a sealed state, which can realize zero pollution of oil samples, clean and orderly working process, flexible and convenient use, and greatly improve work efficiency.

Description

An oil transition joint for transformer or reactor

technical field

The utility model relates to the technical field of transformers or reactor tools, in particular to an oil-taking transition joint for transformers or reactors.

Background technique

At present, the quality of the insulating oil of a power transformer or reactor can reflect the insulation state of the transformer or reactor. When a transformer or reactor fails, it can be reflected by various tests such as oil chromatography and gas content of the insulating oil The nature and causes of defects inside transformers or reactors, etc. Therefore, substation operation and maintenance personnel need to regularly take insulating oil samples for transformers or reactors according to the plan. The various tests of oil samples have high requirements on the quality of the obtained oil samples. A little air, impurities or moisture mixed in the oil taken on site are enough to affect the judgment of the test results. As shown in Figure 1, the existing power transformer or The oil outlet joint of the reactor includes the oil outlet main valve 1, the oil outlet pipe 2 and the oil outlet head 3. The oil outlet head 3 is provided with an oil outlet hole 4. At present, the oil outlet personnel generally rely on a simple rubber tube 5, wrench, The syringe 6 and other tools are used to take oil, and the components are disassembled by a wrench, and finally the rubber tube is sleeved outside the oil outlet hole 4, and the syringe 6 is connected to the oil outlet end of the rubber tube 5, so as to perform the oil outlet operation. The above-mentioned whole process, For unskilled personnel, it is very likely that the air, impurities or moisture mixed in the oil sample of the syringe 6 will pollute the oil sample during oil extraction, and the oil outlet hole 4 of the transformer or reactor is exposed to the air. It is inevitable to be polluted by impurities such as water and dust during the oil discharge process, and the oil flow may splash around, causing the embarrassing situation that the working environment is dirty and busy.

Utility model content

The purpose of the utility model is to provide an oil-taking transition joint for a transformer or a reactor, which can protect the oil outlet hole from being polluted during the oil-taking process, and protect the working environment for oil-taking to be clean and hygienic.

The technical scheme that the utility model adopts is:

An oil-taking transition joint for a transformer or a reactor, comprising an oil-taking joint, the oil-taking joint includes a main valve of an oil outlet hole, an oil-taking pipe, and an oil-out head, and also includes a transition joint, and the transition joint is sleeved On the oil joint; the transition joint includes a hollow cylindrical structure joint body, a transition rubber sleeve and a hard thin tube arranged in the hollow cylindrical structure joint body, and one part of the hollow cylinder structure joint body A connecting cavity is provided on the side, and the inner wall of the connecting cavity is provided with a joint engaging thread; the outside of the oil pipe is provided with a reverse engaging thread, and the reverse engaging thread is engaged with the joint engaging thread on the inner wall of the connecting cavity. The thread is matched; the inner end of the connection cavity is fixed with an annular sealing ring, and the middle of the annular sealing ring is fixed with a transitional rubber sleeve horizontally, and the other end of the transitional rubber sleeve passes through the other side of the hollow cylindrical structure joint body. , and one end of the hard thin tube is sleeved in the exit end of the transition rubber sleeve, and the other end of the hard thin tube is horizontally arranged outside the hollow cylindrical structure joint body.

A metal cover plate is also included, and the metal cover plate is fixedly arranged at the junction of the transition rubber sleeve and the joint body of the hollow cylindrical structure for increasing the sealing performance.

The end of the transitional rubber tube close to the oil outlet has the same external structure as the oil outlet, and the end away from the oil outlet has a cylindrical structure with a gradually changing inner diameter.

The diameter of the thin hard tube is the same as that of the oil inlet of the oil outlet head.

The hard thin tube can be made of metal aluminum alloy thin tube or engineering plastic thin tube with high temperature resistance, corrosion resistance and certain strength.

The diameter of the end aperture of the hard thin tube should be slightly lower than the diameter of the needle hole of the syringe by 2 mm, so as to meet the compatibility of the syringe for oil extraction.

The thread number and size radius of the engaging thread of the oil-taking joint of the transformer or reactor are consistent with those of the transition joint, so as to ensure that the oil outlet hole is always in a sealed state during the entire oil-taking process, preventing oil samples from leaking. Pollution and splash of oil flow.

The joint sealing ring inside the transition joint is the same size as the annular sealing ring, so as to ensure that the oil outlet hole is always in a sealed state during the entire oil extraction process, preventing oil sample pollution and oil splashing.

In the utility model, after the transition joint of the transformer or reactor is unscrewed, a transition joint is arranged to be docked at the original position of the oil extraction joint, the oil extraction pipe is covered and sealed through the connection cavity, and the oil outlet head is sealed and coated by the transition rubber sleeve. , so that the oil outlet hole can be in a sealed state to discharge oil, which can realize zero pollution of oil samples, clean and orderly work process, flexible and convenient use, greatly improved work efficiency, strong field practicability, and high promotion value .

Description of drawings

Fig. 1 is a schematic diagram of the structure of the oil-taking state of the existing oil-taking joint;

Fig. 2 is a structural schematic diagram of the utility model.

Detailed ways

As shown in Figures 1 and 2, the utility model includes an oil-taking joint, and the described oil-taking joint includes an oil outlet main valve 1, an oil-taking pipe 2 and an oil outlet head 3, and also includes a transition joint, and the transition The joint is sleeved on the oil-taking joint; the transition joint includes a hollow cylindrical structure joint body 10, a transition rubber sleeve 7 and a hard thin tube 13 arranged in the hollow cylindrical structure joint body 10, and the hollow One side of the joint body 10 with a cylindrical structure is provided with a connecting cavity 11, and the inner wall of the connecting cavity 11 is provided with a joint engaging thread 12; the outside of the oil pipe 2 is provided with a reverse engaging thread, and the reverse The engaging thread is matched with the joint engaging thread 12 on the inner wall of the connecting chamber 11; the inner end of the connecting chamber 11 is fixedly provided with an annular sealing ring 9, and the middle level of the annular sealing ring 9 is fixedly provided with a transition rubber sleeve 7, and the transition rubber The other end of the sleeve 7 passes through the other side of the hollow cylindrical structure joint body 10, and one end of the hard thin tube 13 is sleeved in the end of the transition rubber sleeve 7, and the other end of the hard thin tube 13 One end is horizontally arranged outside the joint body 10 of the hollow cylindrical structure.

It also includes a metal cover plate 8, which is fixedly arranged at the junction of the transition rubber sleeve 7 and the joint body 10 of the hollow cylindrical structure to increase the sealing performance.

The end of the transition rubber tube 7 close to the oil outlet head 3 has the same external structure as the oil outlet head 3, and the end away from the oil outlet head 3 is a cylindrical structure with an inner diameter gradually changing from large to small. The pipe diameter of the described hard capillary 13 is the same as the pipe diameter of the oil outlet 4 of the oil outlet head 3 . The hard thin tube 13 can be made of a metal aluminum alloy thin tube or an engineering plastic thin tube that is resistant to high temperature and corrosion and has a certain strength. The diameter of the end aperture of the hard thin tube 13 should be slightly lower than the diameter (2mm) of the needle hole of the syringe 6, so as to meet the compatibility of the syringe for oil extraction. One end of the progressive tubular structure inserted into the transition rubber tube 7 through the hard thin tube 13 is used to cooperate with the oil outlet 4 of the oil outlet head 3 .

The thread number and size radius of the engaging thread of the oil-taking joint of the transformer or reactor are consistent with those of the transition joint, so as to ensure that the oil outlet hole is always in a sealed state during the entire oil-taking process, preventing oil samples from leaking. Pollution and splash of oil flow. The joint sealing ring inside the transition joint is the same size as the annular sealing ring, so as to ensure that the oil outlet hole is always in a sealed state during the entire oil extraction process, preventing oil sample pollution and oil splashing.

When the existing device takes oil, the transition joint needs to be unscrewed, and the oil outlet hole 4 is exposed to the air at this time. After docking the syringe 6, take the oil by adjusting the main valve 1 of the oil outlet hole. Since the main valve 1 of the oil outlet hole is not easy to control and the rubber tube 5 is uncertain when the rubber tube 5 is docked, this method is very likely to be in the oil sample. The oil sample is polluted by the mixed air, impurities or water. At the same time, the oil outlet hole 4 of the oil outlet head of the transformer or reactor is exposed to the air. It is inevitable to be polluted by impurities such as water and dust during the oil outlet process, and the The embarrassing situation that the oil flow splashes around and causes the working environment to be dirty and messy may also occur.

In order to avoid this situation, the utility model adds an oil-taking joint as a hollow cylinder structure, and there is a connecting cavity 11 in the center of the bottom where the oil outlet hole can be embedded, that is, a concave hole (the concave hole is used to describe the connecting cavity 11 below). Inside the transition joint, there are joint engaging threads 12 and joint sealing rings 9. The transition joint is fixed on the oil outlet hole 4 through the joint engaging threads 12, and the sealing effect is further strengthened by the joint sealing ring 9 to prevent the inside of the transformer or reactor from getting damp. Contamination, but also to prevent air, impurities or moisture mixed in the oil sample during the oil extraction process. There is a small section of transition rubber tube 7 facing the oil outlet hole at the concave hole where the oil outlet hole 9 can be embedded. On the outside of the transition joint, a hard thin tube 13 is tightly bonded through processing technology. A metal cover plate 8 is used for sealing protection at the joint between the transition rubber tube 7 and the hard thin tube 13.

Transformer or reactor oil outlet 4 is in a normal state (when no oil is drawn, as shown in Figure 2), the exterior is sealed by a transition joint, and the transition joint has a joint engaging thread 12 and an annular sealing ring 9, and the transition joint passes through The phagocytosis thread 12 is rotatably fixed on the oil outlet pipe 3 of the oil outlet joint, and is set on the oil outlet hole 4 of the oil outlet head 3 through the transition rubber sleeve 7, and the sealing effect is further strengthened by the annular sealing ring 9 to prevent the transformer from Or the inside of the reactor is polluted by moisture.

The transformer or reactor oil extraction transition joint is used for oil extraction. After the transition joint is unscrewed, the transformer or reactor oil extraction transition joint can be connected to the original position of the transition joint. Now, the pinhole of the syringe 6 is connected to the hard capillary 13, and the oil is taken by adjusting the main valve 1 of the oil outlet. The oil outlet hole is always in a sealed state during the entire oil extraction process, which prevents the contamination of the oil sample and the random splashing of the oil flow. It can realize zero pollution of the oil sample, clean and orderly working process, flexible and convenient use, and greatly improve the work efficiency.

Claims (8)

1. An oil-taking transition joint for a transformer or a reactor, comprising an oil-taking joint, said oil-taking joint comprising a main valve of an oil outlet hole, an oil-taking pipe and an oil-discharging head, characterized in that: a transition joint is also included, the The transition joint described above is sleeved on the oil-taking joint; the transition joint includes a hollow cylindrical structure joint body and a transition rubber sleeve and a hard thin tube arranged in the hollow cylindrical structure joint body. One side of the joint body of the barrel structure is provided with a connecting cavity, and the inner wall of the connecting cavity is provided with a joint snap-in thread; the outside of the oil pipe is provided with a reverse snap-in thread, and the reverse snap-in thread is connected with the connection cavity The joints on the inner wall are matched with the threads; the inner end of the connection cavity is fixed with an annular sealing ring, and the middle of the annular sealing ring is fixed with a transitional rubber sleeve, and the other end of the transitional rubber sleeve passes through the hollow cylindrical structure joint The other side of the body is set, and one end of the hard thin tube is sleeved in the exit end of the transition rubber sleeve, and the other end of the hard thin tube is horizontally set outside the hollow cylindrical structure joint body. 2. The oil-taking transition joint for transformer or reactor according to claim 1, characterized in that: it also includes a metal cover plate, and the metal cover plate is fixedly arranged on the joint body between the transition rubber bushing and the hollow cylinder structure joint body. Joint for added tightness. 3. The oil-taking transition joint for transformers or reactors according to claim 2, characterized in that: the end of the transition rubber bushing close to the oil outlet has the same shape and structure as the oil outlet, and is far away from the oil outlet. One end is a cylindrical structure with a gradual change in inner diameter from large to small. 4. The oil-taking transition joint for transformer or reactor according to claim 3, characterized in that: the diameter of the thin hard tube is the same as the diameter of the oil-taking port of the oil outlet head. 5. The oil transfer joint for transformer or reactor according to claim 4, characterized in that: the hard thin tube can be made of metal aluminum alloy thin tube or engineering plastic thin tube with high temperature resistance, corrosion resistance and certain strength . 6. The oil-taking transition joint for transformers or reactors according to claim 5, characterized in that: the diameter of the end aperture of the thin hard tube should be slightly lower than the diameter of the needle hole of the syringe by 2mm. 7. The oil-taking transition joint for transformer or reactor according to claim 6, characterized in that: the number of threads and the size radius of the engaging thread of the transformer or reactor oil-taking joint and the joint engaging thread of the transition joint be consistent. 8. The oil-taking transition joint for transformer or reactor according to claim 7, characterized in that: the joint sealing ring inside the transition joint is the same size as the annular sealing ring.