Connecting structure of petrochemical engineering drainage pipeline

Abstract

The utility model discloses a connecting structure of a petrochemical engineering drainage pipeline, and relates to the technical field of petrochemical engineering equipment. The connecting structure of the petrochemical engineering drainage pipeline comprises a connecting piece, a butt joint piece and a fixing unit, the connecting piece is connected to the outer side of the butt joint piece in a sleeving mode, the fixing unit is connected to the outer side of the connecting piece and the outer side of the butt joint piece in a sleeving mode, the connecting piece comprises a drainage pipe and a sleeving head, the sleeving head is connected to the outer side of the drainage pipe, and a sleeving face is arranged on the inner side of the sleeving head. And the sleeving surface expands from inside to outside to form an inclined arc-shaped surface. According to the connecting structure of the petrochemical engineering drainage pipeline, the connecting piece and the butt joint piece are arranged, the inner side of the connecting piece is provided with a sleeving face which expands from inside to outside and is of an inclined arc face, the butt joint piece is provided with an inserting ring which is gradually reduced from inside to outside, and the outer side of the inserting ring is provided with an abutting face corresponding to the sleeving face, so that connection between the connecting piece and the butt joint piece is facilitated; and three groups of sealing rings are arranged on the inner sides of the connecting piece and the butt joint piece, so that the sealing performance of the connecting structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum chemical industry equipment technical field, concretely is a kind of connection structure of petroleum chemical industry drainage pipeline. BACKGROUND

[0002] In the petroleum production conveying process, petroleum pipeline is connected by flange, which is the most common way of petroleum pipeline connection, and the flange connection makes it more convenient and fast for workers to maintain or replace accessories, and in the process of petroleum chemical production, drainage pipeline system needs to withstand corrosive liquid, high pressure and temperature change and other harsh conditions.

[0003] The traditional flange connection structure has the following problems: poor sealing reliability, prone to leakage; the existing connection structure is easy to cause the flanges to be misaligned with each other, the installation process is time-consuming and laborious, the installation efficiency is low, and it is not conducive to improving production efficiency.

[0004] The traditional flange connection structure has the following problems: poor sealing reliability, prone to leakage; the existing connection structure is easy to cause the flanges to be misaligned with each other, the installation process is time-consuming and laborious, the installation efficiency is low, and it is not conducive to improving production efficiency. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model provides a connection structure of petroleum chemical industry drainage pipeline, which solves the problems of the traditional flange connection structure, such as simple structure, poor sealing reliability, easy leakage, and the existing connection structure, such as large pipe size, heavy weight, flanges misaligned with each other during installation, time-consuming and laborious installation process, low installation efficiency and low production efficiency.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme: a connection structure of petroleum chemical industry drainage pipeline, comprising a connecting piece, a butt joint piece and a fixing unit, the connecting piece is sleeved outside the butt joint piece, the fixing unit is sleeved outside the connecting piece and the butt joint piece, the connecting piece comprises:

[0007] Drainage pipe;

[0008] Sleeve joint, the sleeve joint is connected outside the drainage pipe, the inside of the sleeve joint is provided with a sleeve surface, and the sleeve surface is an inclined arc surface expanding from inside to outside.

[0009] Preferably, the sleeve joint is sleeved with a connecting snap ring on the outside, a clamping groove is formed on the sleeve surface, a first sealing ring is clamped in the clamping groove, and a second sealing ring is sleeved on the inside of the sleeve surface.

[0010] Preferably, the adapter is provided with a positioning clasp, both sides of the positioning clasp are connected with a plug-in ring, and the plug-in ring is in abutment with the second sealing ring.

[0011] Preferably, the plug-in ring is provided with an abutment surface outside, the abutment surface corresponds to a sleeve surface, a third sealing ring is sleeved outside the plug-in ring, and the third sealing ring is in abutment with the sleeve joint.

[0012] Preferably, the fixing unit is provided with a clamping piece, a plug-in hole is formed in the clamping piece, and a fixing bolt is plugged into the plug-in hole.

[0013] Preferably, the fixing unit is provided with a limiting clasp, an arc-shaped groove is formed in the limiting clasp, a connecting hole is formed in the limiting clasp, and a connecting bolt is plugged into the connecting hole.

[0014] The utility model discloses a kind of connecting structure of petroleum chemical industry drainage pipeline, it has the beneficial effects as follows: connector and adapter are provided, connector inside is provided with the sleeve surface of the inclined arc surface from inside to outside expansion, adapter is provided with the plug-in ring that is gradually smaller from inside to outside, plug-in ring outside is provided with the abutment surface corresponding to the sleeve surface, the connection of connector and adapter is facilitated;And three groups of sealing rings are provided in the inside of connector and adapter, improve the sealing property of this connecting structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be simply introduced below, and obviously, the drawings in the following description can only be some embodiments of the present utility model, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0016] Figure 1 It is the overall structure schematic diagram of the present utility model;

[0017] Figure 2 It is the cross-sectional structure schematic diagram of the present utility model;

[0018] Figure 3 It is the structure schematic diagram of the connector of the present utility model;

[0019] Figure 4 It is the cross-sectional structure schematic diagram of the connector of the present utility model;

[0020] Figure 5 It is the structure schematic diagram of the adapter of the present utility model;

[0021] Figure 6 It is the structure schematic diagram of the positioning unit of the present utility model;

[0022] Figure 7 It is a structure schematic view of the fixed shell of the utility model.

[0023] In the figure: 1, connecting piece; 11, drain pipe; 12, sleeve joint; 121, connecting snap ring; 122, sleeve surface; 123, clamping groove; 124, first sealing ring; 125, second sealing ring; 2, butt joint piece; 21, positioning snap ring; 22, plug-in ring; 221, abutting surface; 222, third sealing ring; 3, fixed unit; 31, clamping piece; 311, plug-in hole; 312, fixing bolt; 32, limiting snap ring; 321, circular arc groove; 322, connecting hole; 323, connecting bolt. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model is clearly and completely described, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] The connecting structure of the petroleum chemical industry drain pipeline provided by the embodiments of the present application solves the problems of simple structure of the connecting part of the traditional flange connecting structure, insufficient sealing reliability and easy leakage, and the problems of misalignment between the flanges during installation due to the large size and heavy weight of the pipeline, time-consuming and laborious installation process, low installation efficiency and difficulty in improving production efficiency, and realizes improved sealing of the connecting structure and convenient installation of the connecting structure.

[0026] The utility model discloses a connecting structure of petroleum chemical industry drain pipeline. EMBODIMENT

[0027] According to the accompanying Figures 1-7 As shown, it comprises connecting piece 1, butt joint piece 2 and fixed unit 3, connecting piece 1 is sleeved on the outside of butt joint piece 2, fixed unit 3 is sleeved on the outside of connecting piece 1 and butt joint piece 2, connecting piece 1 comprises:

[0028] Drain pipe 11;

[0029] Sleeve joint 12 is connected on the outside of drain pipe 11, and the inside of sleeve joint 12 is provided with sleeve surface 122, which is an inclined arc surface expanding from inside to outside.

[0030] The connecting piece 1 is provided with a sleeve surface 122 which is in the shape of an inclined arc surface expanding from inside to outside, and the counterpiece 2 is provided with an insertion ring 22 which is gradually smaller from inside to outside, and the outer side of the insertion ring 22 is provided with an abutting surface 221 corresponding to the sleeve surface 122, facilitating the connection of the connecting piece 1 and the counterpiece 2.

[0031] Further, the sleeve joint 12 is sleeved with a connecting clasp 121, the sleeve surface 122 is provided with a clamping groove 123, the first sealing ring 124 is clamped in the clamping groove 123, and the second sealing ring 125 is sleeved on the inner side of the sleeve surface 122.

[0032] Further, the counterpiece 2 is provided with a positioning clasp 21, the positioning clasp 21 is connected with the insertion ring 22 on both sides, and the insertion ring 22 abuts against the second sealing ring 125.

[0033] In particular, the outer side of the insertion ring 22 is provided with an abutting surface 221 corresponding to the sleeve surface 122, and the third sealing ring 222 is sleeved on the outer side of the insertion ring 22 and abuts against the sleeve joint 12.

[0034] In particular, the fixing unit 3 is provided with a clamping piece 31, the clamping piece 31 is provided with an insertion hole 311, and the fixing bolt 312 is inserted into the inner side of the insertion hole 311. Embodiment

[0035] According to the drawings Figures 1-7 It is shown that it comprises a connecting piece 1, a counterpiece 2 and a fixing unit 3, the connecting piece 1 is sleeved on the outer side of the counterpiece 2, the fixing unit 3 is sleeved on the outer side of the connecting piece 1 and the counterpiece 2, and the connecting piece 1 comprises:

[0036] The drain pipe 11;

[0037] The sleeve joint 12 is connected on the outer side of the drain pipe 11, and the inner side of the sleeve joint 12 is provided with a sleeve surface 122 which is in the shape of an inclined arc surface expanding from inside to outside.

[0038] Need to be emphasized, the fixing unit 3 is provided with a limiting clasp 32, the inner side of the limiting clasp 32 is provided with a circular arc groove 321, the limiting clasp 32 is provided with a connecting hole 322, and the connecting bolt 323 is inserted into the inner side of the connecting hole 322.

[0039] Working principle: the connecting piece 1 is provided with a sleeve surface 122 which is in the shape of an inclined arc surface expanding from inside to outside, and the counterpiece 2 is provided with an insertion ring 22 which is gradually smaller from inside to outside, and the outer side of the insertion ring 22 is provided with an abutting surface 221 corresponding to the sleeve surface 122, facilitating the connection of the connecting piece 1 and the counterpiece 2;

[0040] And the connecting piece 1 and the counterpiece 2 inside is provided with three groups of sealing ring, improve the sealing of the connection structure;

[0041] And set up the fixed unit 3 to connect in the connecting piece 1 and the counterpiece 2 outside, the connecting piece 1 and the counterpiece 2 are fixed.

[0042] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled person in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements. These changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A connecting structure of a petrochemical drainage pipeline, comprising a connecting piece (1), a counter piece (2) and a fixing unit (3), the connecting piece (1) is sleeved outside the counter piece (2), the fixing unit (3) is sleeved outside the connecting piece (1) and the counter piece (2), characterized in that, The utility model relates to a connecting piece (1) and a butt joint piece (2) and a fixed unit (3) are connected. Drain pipe (11); The sleeve joint (12) is connected outside the drain pipe (11), and the sleeve joint (12) is provided with a sleeve surface (122) inside, which is an inclined arc surface from inside to outside.

2. The connecting structure of a petrochemical drain pipe according to claim 1, wherein The sleeve joint (12) is sleeved with a connecting snap ring (121), the sleeve surface (122) is provided with a clamping groove (123), the clamping groove (123) is provided with a first sealing ring (124), and the sleeve surface (122) is provided with a second sealing ring (125).

3. The connecting structure of a petrochemical drain pipe according to claim 1, wherein The butt joint piece (2) is provided with a positioning snap ring (21), the positioning snap ring (21) is connected with an insertion ring (22) on both sides, the insertion ring (22) is in abutment with the second sealing ring (125).

4. The connecting structure of a petrochemical drain pipe according to claim 3, wherein The insertion ring (22) is provided with an abutment surface (221) outside, the abutment surface (221) corresponds to the sleeve surface (122), the insertion ring (22) is sleeved with a third sealing ring (222) outside, and the third sealing ring (222) is in abutment with the sleeve joint (12).

5. The connecting structure of a petrochemical drain pipe according to claim 1, wherein The fixed unit (3) is provided with a clamping piece (31), the clamping piece (31) is provided with an insertion hole (311), and the insertion hole (311) is inserted with a fixing bolt (312) inside.

6. The connecting structure of a petrochemical drain pipe according to claim 5, wherein The fixed unit (3) is provided with a limiting snap ring (32), the limiting snap ring (32) is provided with a circular arc groove (321) inside, the limiting snap ring (32) is provided with a connecting hole (322), and the connecting hole (322) is inserted with a connecting bolt (323) inside.

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