CN204962093U - Oil filter tube coupling head - Google Patents

Abstract

The utility model discloses a pipeline connection head of an oil purifier, which comprises a first connecting piece to a fourth connecting piece, the right end of the first connecting piece is fixedly connected with the left end of the second connecting piece, the right end of the second connecting piece is connected with the second connecting piece The three connectors are mechanically assembled and fastened by tension nuts, and the right end of the third connector passes through the through hole of the tension nut and is fixedly connected to the left end of the fourth connector; between the second connector and the third connector The mechanical assembly includes a platform assembly part and a cone surface assembly part, and the tension nut is thread-fitted on the outer peripheral surface of the second connecting part and the third connecting part. The utility model is used to connect the transformer and the vacuum oil filter, which shortens the connection time of the oil filter pipeline, prevents the interface from leaking oil, reduces the number of outages of the oil filter, greatly improves the safety of the oil filter operation, and ensures Safe operation of electrical equipment.

Description

Oil filter pipe connector

technical field

The utility model relates to the technical field of pipeline connection, in particular to a pipeline connection head applied to an oil filter machine.

Background technique

In substations, newly installed transformer equipment requires vacuum oil filling and thermal oil circulation. Vacuum oil filling and hot oil circulation operations must be carried out with vacuum oil filter and pressure oil filter, which requires connecting the transformer and vacuum oil filter and pressure oil filter through pipelines and connectors. At present, the pipeline connectors of the vacuum oil filter and pressure oil filter we use are all inherited live connectors. Since the connection between the transformer, the vacuum oil filter and the pressure oil filter is relatively complicated, at least three interfaces are required. Together, there are problems such as difficult to grasp the balance when connecting, prone to misalignment, time-consuming and laborious in the assembly and connection process, and sometimes need to be connected repeatedly, which leads to more than 20 minutes for each assembly and connection, which greatly affects the work. schedule. In addition, due to the many types of oil filter pipe connectors and the mismatch of the silk path, a large amount of raw material tape needs to be wound during the connection process, which brings great difficulties to the connection of the pipes and makes the connection process extremely cumbersome; The pipe joints of the upper oil filter unit are poor in quality and thin in wall, and are easily deformed after long-term use and assembly and disassembly with pipe wrench. Therefore, oil leakage accidents often occur due to loose pipe connections during use.

Utility model content

The technical problem to be solved by the utility model is to provide an oil filter pipeline connector with simple structure, convenient assembly and effective prevention of oil leakage.

In order to solve the problems of the technologies described above, the technical solutions adopted by the utility model are as follows.

The oil filter pipeline connector includes a first connecting piece to a fourth connecting piece, the right end of the first connecting piece is fixedly connected with the left end of the second connecting piece, and the right end of the second connecting piece is mechanically matched with the third connecting piece. Installed and fastened by the tightening nut threaded on the outer circumference of the second connecting piece and the third connecting piece, the right end of the third connecting piece passes through the through hole of the tightening nut and is fixed to the left end of the fourth connecting piece connect;

The second connector includes a main body and a fitting portion from left to right, the fitting portion includes a lower platform fitting portion and a lower conical fitting portion, the main body and the lower platform fitting portion have corresponding pipe wall thicknesses and inner diameters, and the lower conical fitting portion The left end of the lower platform is connected to the right end of the matching part of the lower platform, and the right end of the lower tapered surface matching part is connected to the inner wall of the main part tube. an annular projection of an external thread;

The third connector includes an upper platform assembly part, an upper cone surface assembly part and a connecting pipe part from left to right, the upper platform assembly part is fitted up and down with the lower platform matching part of the second connector, and the upper cone surface assembly part and The lower taper fitting part of the second connecting piece fits up and down;

The tension nut includes an internal thread end and a through hole, the inner circumferential surface of the internal thread end is provided with an internal thread that matches the external thread on the annular protrusion of the second connector, and the left end of the through hole is locked. Installed at the right end of the end of the internal thread, the through hole passes through the connecting pipe part of the third connecting piece and is interference fit with the connecting pipe part.

In the above oil filter pipeline connector, the first connecting piece and the second connecting piece and between the third connecting piece and the fourth connecting piece are fixedly connected by welding.

As for the oil filter pipe connection head, the outer circumference of the right end of the fourth connector is provided with an external thread for connecting the steel wire oil pipe of the oil filter.

Due to the adoption of the above technical solutions, the technical progress achieved by the utility model is as follows.

The utility model has the advantages of simple structure and convenient assembly, and the connection time of the pipeline can be reduced from 28 minutes to 6 minutes, which greatly shortens the connection time of the oil filtering pipeline, and at the same time shortens the oil filtering time and saves manpower , material and financial resources; the second connecting piece and the third connecting piece are connected by bamboo-shaped convex grooves and taper surfaces, so that the connection between the pipe joint and the connecting head is very firm and tight, and the oil leakage phenomenon is avoided. occur.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural view of the second connector described in the present invention;

Fig. 3 is a schematic structural view of the third connector described in the present invention;

Fig. 4 is the structural representation of tension nut described in the utility model;

Fig. 5 is a structural schematic diagram of the plugging head described in the present invention.

Among them: 1. The first connector, 2. The second connector, 21. The main body, 22. The annular raised part, 23. The lower platform matching part, 24. The lower cone matching part, 3. The third connecting part, 31. Upper platform assembly, 32. Upper cone assembly, 33. Connecting pipe, 4. Tightening nut, 41. Internal thread end, 42. Through hole, 5. Fourth connecting piece, 6. No. 1st welding zone, 7. Second welding zone, 8. Plugging head, 81. Thread fitting part, 82. Cone sealing part.

detailed description

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

An oil filter pipeline connector, the structure of which is shown in Figure 1, includes a first connector to a fourth connector, the right end of the first connector 1 and the left end of the second connector 2 are fixedly connected by welding, And an annular first welding zone 6 is formed at the junction of the first connecting piece 1 and the second connecting piece 2; the right end of the second connecting piece 2 is mechanically fitted with the third connecting piece 3 and fastened by a tension nut 4, The tension nut 4 is threadedly fitted on the outer circumferential surface of the second connector and the third connector, and the right end of the third connector 3 passes through the through hole of the tension nut and is fixed with the left end of the fourth connector 5 by welding Connect, and form an annular second welding zone 7 at the junction of the third connecting piece and the fourth connecting piece; the outer circumference of the right end of the fourth connecting piece 5 is provided with external threads for connecting the steel wire oil pipe of the oil filter unit.

The structure of the second connector 2 is shown in Figure 2, from left to right, it includes a main body 21 and a matching part. The matching part includes a lower platform matching part 23 and a lower tapered surface matching part 24. Corresponding thickness and inner diameter, the left end of the lower conical surface matching part 24 is connected with the right end of the lower platform matching part 23, and the right end of the lower conical surface matching part 24 is connected with the inner wall of the main body part 21; between the main body part and the lower platform matching part It is an annular raised portion 22 with an outer diameter larger than the outer diameter of the pipe of the main body and provided with an external thread, and the annular raised portion is used for thread fitting with a tension nut.

The structure of the third connector 3 is as shown in Figure 3, including an upper platform assembly part 31, an upper cone surface assembly part 32 and a connecting pipe part 33 from left to right, and the upper platform assembly part 31 cooperates with the lower platform of the second connector Part 23 fits up and down, and the upper taper fitting part 32 and the lower taper mating part 24 of the second connector fit up and down; make the third connector and the second connector form a bevel sealing fit and a platform over fit, which is convenient The tension nut securely assembles the third connecting piece and the second connecting piece together.

The structure of the tension nut 4 is as shown in Figure 4, including an internal thread end 41 and a through hole 42, and the inner peripheral surface of the internal thread end 41 is provided with an external thread on the annular protrusion of the second connector. The left end of the through hole 42 is clipped to the right end of the internal thread end 41, and the through hole 42 passes through the connecting pipe part 33 of the third connector and is interference fit with the connecting pipe part.

In the utility model, when not being used to connect the pipeline of the transformer and the oil filter unit, the right end of the second connector can be equipped with a plugging head 8 to seal the pipeline. The structure of the plugging head 8 is shown in Figure 5, including a threaded fitting part 81 and a tapered sealing part 82 which are integrally arranged from left to right; The structures are the same; the tapered sealing part 82 fits the lower tapered matching part of the second connector.

Claims (3)

1. The pipeline connector of the oil filter unit is characterized in that it includes a first connecting piece to a fourth connecting piece, the right end of the first connecting piece (1) is fixedly connected with the left end of the second connecting piece (2), and the first The right end of the second connecting piece (2) is mechanically assembled with the third connecting piece (3) and fastened by a tension nut (4) threaded on the outer circumference of the second connecting piece and the third connecting piece. The right end of the connecting piece (3) is fixedly connected with the left end of the fourth connecting piece (5) after passing through the through hole of the tension nut; The second connector (2) includes a main body part (21) and a matching part from left to right, the matching part includes a lower platform matching part (23) and a lower tapered surface matching part (24), the main body part and the lower platform matching part The thickness of the pipe wall and the inner diameter are corresponding, the left end of the lower taper fitting part (24) is connected with the right end of the lower platform fitting part (23), and the right end of the lower taper fitting part (24) is connected with the inner wall of the main body part (21) , between the main body and the matching portion of the lower platform is an annular raised portion (22) with an outer diameter larger than the outer diameter of the main body pipe and provided with external threads; The third connector (3) includes from left to right an upper platform assembly part (31), an upper cone surface assembly part (32) and a connecting pipe part (33), and the upper platform assembly part (31) and the second connector The lower platform fitting part (23) of the lower platform is fitted up and down, and the upper taper fitting part (32) and the lower taper fitting part (24) of the second connector are fitted up and down; The tension nut (4) includes an internal thread end (41) and a through-hole portion (42), and the inner peripheral surface of the internal thread end (41) is provided with an external thread on the annular protrusion of the second connector. Matching internal thread, the left end of the through hole (42) is clamped on the right end of the internal thread end (41), and the through hole (42) passes through the connecting pipe part (33) of the third connector and connects with the connecting pipe part interference fit. 2. The oil filter pipe connector according to claim 1, characterized in that: the first connecting piece and the second connecting piece and between the third connecting piece and the fourth connecting piece are fixed by welding connect. 3 . The oil filter pipeline connector according to claim 1 , characterized in that: the outer circumference of the right end of the fourth connector is provided with an external thread for connecting a steel wire oil pipe of the oil filter. 4 .