Pressure pipeline compensation device

Abstract

The utility model discloses a pressure pipeline compensation device, which relates to the field of pressure pipeline compensation and comprises an outer sleeve, first connecting flanges are welded at two ends of the outer sleeve, a limit sleeve is sleeved on the inner wall of the outer sleeve, and a second connecting flange is welded at one end of the limit sleeve outside the outer sleeve. An inner sleeve is connected to the inner wall of the limiting sleeve in a sleeved mode, a third connecting flange is welded to the end, located outside the limiting sleeve, of the inner sleeve, the other end of the inner sleeve penetrates into an inner cavity of the outer sleeve, and a limiting ring protruding outwards is integrally formed at the end, located in the inner cavity of the outer sleeve, of the inner sleeve. A sealing ring is arranged at the position where the outer wall of the second connecting flange is connected with the outer sleeve in a sleeved mode. By arranging the connecting limiting mechanism, the limiting ring and the spring, it can be guaranteed that when the device is installed, the expansion amounts of the two inner sleeves are in a consistent state, and the problem of installation errors caused by inconsistent expansion amounts is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the compensation field of pressure pipeline, specifically a pressure pipeline compensation device. BACKGROUND

[0002] The pressure pipeline compensation device is a device for compensating the expansion, displacement and deformation of the pipeline caused by factors such as temperature change, pressure fluctuation and geological condition change, and it has various types according to the application, one of which is a sleeve compensator.

[0003] The existing sleeve compensator is divided into two types, one of which is provided with a slidable inner sleeve in the outer sleeve, and the other of which is provided with two symmetrically arranged inner sleeves in the outer sleeve. When the sleeve compensator with double inner sleeves is installed, the two inner sleeves may not have the same extension amount, and the pressure pipeline is strictly measured before installation. The sleeve compensator generally needs to be set at an interval of 50-100 meters, and when a special situation occurs (such as pipeline turning), the error of the compensator will cause the change of the pipeline turning position and deviate from the original preset path. SUMMARY

[0004] The utility model aims at solving the problems in the above background art and provides a pressure pipeline compensation device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pressure pipeline compensation device, comprising an outer sleeve, one end of the outer sleeve is welded with a first connecting flange, the inner wall of the outer sleeve is sleeved with a limiting sleeve, one end of the limiting sleeve outside the outer sleeve is welded with a second connecting flange, the inner wall of the limiting sleeve is sleeved with an inner sleeve, one end of the inner sleeve outside the limiting sleeve is welded with a third connecting flange, the other end of the inner sleeve penetrates into the inner cavity of the outer sleeve, one end of the inner sleeve in the inner cavity of the outer sleeve is integrally formed with a limiting ring protruding outward, the outer wall of the second connecting flange is provided with a sealing ring at the sleeving position with the outer sleeve, and the outer periphery of the limiting ring is provided with a sealing ring at the sleeving position with the inner wall of the outer sleeve; the first connecting flange and the limiting sleeve are connected through a connecting limiting mechanism, and the third connecting flange, the first connecting flange and the limiting sleeve are connected through a guide reset mechanism.

[0006] As a further scheme of the utility model: the connecting limiting mechanism includes the first connecting hole arranged in the inside of the first connecting flange and the second connecting hole arranged in the inside of the second connecting flange, the first connecting hole and the second connecting hole are staggered, the inner wall of the first connecting hole is inserted with the connecting bolt, the outer periphery of the connecting bolt is integrally formed with the limiting plate, the limiting plate is located between the first connecting flange and the second connecting flange, and one side of the limiting plate is abutted with the first connecting flange, and the outer wall of the connecting bolt is threadedly connected with the locking nut.

[0007] As a further scheme of the utility model: the connecting limiting mechanism includes the first connecting hole arranged in the inside of the first connecting flange and the second connecting hole arranged in the inside of the second connecting flange, the first connecting hole and the second connecting hole are staggered, the inner wall of the first connecting hole is inserted with the connecting bolt, the outer periphery of the connecting bolt is integrally formed with the limiting plate, the limiting plate is located between the first connecting flange and the second connecting flange, and one side of the limiting plate is abutted with the first connecting flange, and the outer wall of the connecting bolt is threadedly connected with the locking nut.

[0008] As a further scheme of the utility model: the third connecting hole is arranged on the flange plate of the pressure pipeline and the third connecting flange, the third connecting flange and the flange plate of the pressure pipeline are connected through the bolt and the connecting nut, and the bolt is inserted into the third connecting hole.

[0009] As a further scheme of the utility model: the outer periphery of the inner sleeve is sleeved with the limiting sleeve, and the sealing ring is arranged at the sleeving position.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] 1、Through the setting of the connecting limiting mechanism, the limiting ring and the spring, the extension and contraction amounts of the two inner sleeves can be kept consistent during installation, and the installation error caused by inconsistent extension and contraction amounts can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural schematic diagram of the utility model;

[0013] Figure 2 It is the internal structure schematic diagram of the utility model;

[0014] Figure 3 It is the Figure 2 It is the local enlarged view of A in the middle.

[0015] In the drawing: 1, outer sleeve; 2, first connecting flange; 3, limiting sleeve; 4, second connecting flange; 5, inner sleeve; 6, third connecting flange; 7, pressure pipeline; 8, limiting ring; 9, connecting bolt; 10, limiting plate; 11, guide screw; 12, reset spring. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0017] Please refer to Figures 1-3 In the embodiments of the utility model, a pressure pipeline compensation device comprises an outer sleeve 1, a No. 1 connecting flange 2 is welded at both ends of the outer sleeve 1, a limiting sleeve 3 is sleeved on the inner wall of the outer sleeve 1, a No. 2 connecting flange 4 is welded at one end of the limiting sleeve 3 outside the outer sleeve 1, an inner sleeve 5 is sleeved on the inner wall of the limiting sleeve 3, a No. 3 connecting flange 6 is welded at one end of the inner sleeve 5 outside the limiting sleeve 3, the other end of the inner sleeve 5 penetrates into the inner cavity of the outer sleeve 1, a limiting ring 8 protruding outward is integrally formed at one end of the inner sleeve 5 in the inner cavity of the outer sleeve 1, a sealing ring is arranged at the sleeving position between the outer wall of the No. 2 connecting flange 4 and the outer sleeve 1, and a sealing ring is arranged at the sleeving position between the outer periphery of the limiting ring 8 and the inner wall of the outer sleeve 1; the No. 1 connecting flange 2 is connected with the limiting sleeve 3 through a connecting limiting mechanism, and the No. 3 connecting flange 6 is connected with the No. 1 connecting flange 2 and the limiting sleeve 3 through a guiding reset mechanism.

[0018] In the embodiments, when the device is produced, the inner sleeve 5, of which the end part has not yet formed the limiting ring 8, is inserted into the inner cavity of the limiting sleeve 3, then a pressure device is used to extrude the end part of the inner sleeve 5 away from the No. 3 connecting flange 6, at this time, the limiting ring 8 is formed, after the limiting ring 8 is formed, the limiting sleeve 3 is inserted into the inner wall of the outer sleeve 1, after the insertion of the limiting sleeve 3 is completed, the No. 1 connecting flange 2 and the No. 2 connecting flange 4 are connected by using the connecting limiting mechanism, and the connecting limiting mechanism limits the distance between the No. 1 connecting flange 2 and the No. 2 connecting flange 4.

[0019] Then the guiding reset mechanism is used to connect the No. 1 connecting flange 2, the No. 2 connecting flange 4 and the No. 3 connecting flange 6, so that the assembly of the device is completed.

[0020] Please refer to Figure 1 , Figure 2 and Figure 3 The connecting limiting mechanism comprises a first connecting hole formed in the No. 1 connecting flange 2 and the No. 2 connecting flange 4, a connecting bolt 9 is inserted into the inner wall of the first connecting hole, a limiting plate 10 is integrally formed on the outer periphery of the connecting bolt 9, the limiting plate 10 is located between the No. 1 connecting flange 2 and the No. 2 connecting flange 4, one surface of the limiting plate 10 abuts against the No. 1 connecting flange 2, and a locking nut is threadedly connected to one end of the outer wall of the connecting bolt 9.

[0021] In the embodiment, when installing the connecting limiting mechanism, the connecting bolt 9 is inserted into the first connecting hole, the hexagonal head of the connecting bolt 9 pushes the second connecting flange 4 to move until the limiting plate 10 abuts against the first connecting flange 2, at this time, the locking nut is screwed on the end of the connecting bolt 9 until the locking nut is completely screwed, at this time, the position of the second connecting flange 4 and the limiting sleeve 3 is limited, and the position fixing of the limiting sleeve 3 is completed.

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 , the guiding reset mechanism comprises second connecting holes opened in the third connecting flange 6, the second connecting flange 4 and the first connecting flange 2, the second connecting holes are staggered with the first connecting holes, the inner wall of the second connecting hole is inserted with a guide screw 11, the outer end of the guide screw 11 is threadedly connected with a limiting nut, the third connecting flange 6 and the second connecting flange 4 abut against a reset spring 12, and the reset spring 12 is sleeved on the outer periphery of the guide screw 11.

[0023] In the embodiment, the guide screw 11 is inserted into the second connecting hole of the third connecting flange 6, then the reset spring 12 is placed between the third connecting flange 6 and the second connecting flange 4 and aligned with the second connecting hole, then the guide screw 11 is pushed to pass through the second connecting holes of the second connecting flange 4 and the first connecting flange 2 in sequence, and after insertion, the limiting nut is screwed on one end of the guide screw 11, at this time, the two inner sleeves 5 can only move towards each other from the initial position and cannot move outward, and under the limiting of the spring 13, the two inner sleeves 5 remain in the current position without deformation, which ensures the installation accuracy and avoids the problem that the two inner sleeves 5 have inconsistent extension and retraction amounts during installation, thereby avoiding the deviation during installation of the pressure pipeline 7 and improving the installation accuracy.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3 , the third connecting hole is opened on the flange plate of the third connecting flange 6 and the pressure pipeline 7, and the third connecting flange 6 and the flange plate of the pressure pipeline 7 are connected through bolts and connecting nuts, and the bolts are inserted into the third connecting hole.

[0025] In the embodiment, when connecting the device with the pressure pipeline 7, the third connecting flange 6 at the end of the inner sleeve 5 is connected with the flange of the pressure pipeline 7, and after connection, the bolts and nuts are used for fixing.

[0026] Please refer to Figure 3 , the outer periphery of the inner sleeve 5 is sleeved with the limiting sleeve 3.

[0027] In the embodiment, the design can increase the sealing area of the contact position, and further improve the sealing performance.

[0028] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can make equivalent substitutions or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A pressure pipeline compensation device comprising an outer sleeve (1), both ends of which are welded with a No. 1 connecting flange (2), characterized in that, The inner wall of the outer sleeve (1) is sleeved with a limiting sleeve (3), one end of the limiting sleeve (3) located outside the outer sleeve (1) is welded with a second connecting flange (4), the inner wall of the limiting sleeve (3) is sleeved with an inner sleeve (5), one end of the inner sleeve (5) located outside the limiting sleeve (3) is welded with a third connecting flange (6), the other end of the inner sleeve (5) penetrates into the inner cavity of the outer sleeve (1), one end of the inner sleeve (5) located in the inner cavity of the outer sleeve (1) is integrally formed with a limiting ring (8) protruding outward, the outer wall of the second connecting flange (4) is provided with a sealing ring at the sleeving position with the outer sleeve (1), and the outer periphery of the limiting ring (8) is provided with a sealing ring at the sleeving position with the inner wall of the outer sleeve (1). The first connecting hole is formed in the first connecting flange (2) and the second connecting flange (4), the inner wall of the first connecting hole is inserted with a connecting bolt (9), the outer periphery of the connecting bolt (9) is integrally formed with a limiting plate (10), the limiting plate (10) is located between the first connecting flange (2) and the second connecting flange (4), and one side of the limiting plate (10) abuts against the first connecting flange (2), and the outer wall of the connecting bolt (9) is threadedly connected with a locking nut at one end.

2. A pressure pipe compensation device according to claim 1, characterised in that The second connecting hole is formed in the third connecting flange (6), the second connecting flange (4) and the first connecting flange (2), the second connecting hole and the first connecting hole are staggered, the inner wall of the second connecting hole is inserted with a guide screw (11), the outer end of the guide screw (11) is threadedly connected with a limiting nut, the spring (12) abuts between the third connecting flange (6) and the second connecting flange (4), and the spring (12) is sleeved on the outer periphery of the guide screw (11).

3. A pressure pipe compensation device according to claim 2, characterised in that The third connecting hole is formed in the flange plate of the pressure pipeline (7) and the third connecting flange (6), the third connecting flange (6) and the flange plate of the pressure pipeline (7) are connected through the bolt and the connecting nut, and the bolt is inserted into the third connecting hole.

4. A pressure pipe compensation device according to claim 3, characterised in that The outer periphery of the inner sleeve (5) is provided with a sealing ring at the sleeving position with the limiting sleeve (3).

5. A pressure pipe compensation device according to claim 4, characterised in that ​

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