Spherical compensator for pipeline thermal compensation

Abstract

The utility model relates to the technical field of spherical compensators, in particular to a spherical compensator for pipeline thermal compensation, which comprises an outer sleeve, an outer push ring is mounted at the end of the outer sleeve through a bolt, a spherical pipe is mounted in the outer sleeve, and a sealing filler is filled between the outer sleeve and the spherical pipe. A plurality of compensation columns are fixedly installed on the outer side of the outer sleeve in a communicating mode, push plates are slidably installed on the inner sides of the compensation columns, the telescopic ends of electric push rods are fixedly installed on the outer sides of the push plates, and second pressure sensors are installed on the sides, away from the electric push rods, of the push plates in an embedded mode. The electric push rod drives the sealing filler in the push plate and the compensation column to move until the extrusion force between the sealing filler and the spherical pipe recovers a set value, namely the extrusion force borne by the second pressure sensor recovers the set value, so that the friction force between the sealing filler and the ball head of the spherical pipe is basically at the optimal value all the time, and the sealing effect is guaranteed; and the friction loss is also in a reasonable range.

Description

Technical Field

[0001] The utility model relates to the technical field of spherical compensators, in particular to a spherical compensator used for pipeline thermal compensation. Background Art

[0002] Spherical compensators, also known as spherical bellows compensators or spherical expansion joints, work mainly through the freedom and elastic deformation of the sphere in the pipeline to absorb the thermal expansion and contraction and displacement changes of the pipeline. The sphere can rotate freely in two directions, thereby compensating for the lateral and longitudinal displacement of the pipeline. It is a device that occupies an important position in modern industrial pipeline systems.

[0003] The patent with authorization announcement number CN217899200U discloses a pressure-sealed leak-proof spherical compensator, which drives the extrusion plate, the first spring and the push plate to move downward through the threaded column, so that the first spring is compressed to generate elastic force. When the sealing filler in the inner cavity of the outer sleeve is worn, the elastic force of the first spring drives the push plate to push the supplementary filler in the inner cavity of the push groove into the inner cavity of the outer sleeve to add the sealing filler, thereby realizing the function of automatically compensating the sealing filler and improving the practicability of the pressure-sealed leak-proof spherical compensator. However, there is still room for improvement.

[0004] The above patent utilizes the elastic force of the spring to achieve automatic replenishment of the sealing packing. However, in actual use, the elastic force of the spring gradually decreases, and the squeezing force on the sealing packing also slowly decreases, which reduces the squeezing force between the sealing packing and the ball, resulting in poor sealing effect. Moreover, in the initial adjustment stage, if the squeezing force of the spring is too large, the friction between the sealing packing and the ball will increase, thereby accelerating wear. In short, the squeezing force between the sealing packing and the ball is not constant and cannot always be at the optimal squeezing strength. Utility Model Content

[0005] In response to the above problems, the present application provides a spherical compensator for pipeline thermal compensation, which solves the problem that the elastic force of the spring gradually decreases, the extrusion force between the sealing filler and the ball is not constant, and it is not possible to always maintain the optimal extrusion strength.

[0006] A spherical compensator for pipeline thermal compensation comprises an outer sleeve, an outer push ring is installed at the end of the outer sleeve by bolts, a spherical tube is installed inside the outer sleeve, a sealing filler is filled between the outer sleeve and the spherical tube, a plurality of compensation columns are fixedly installed on the outside of the outer sleeve, a push plate is slidably installed on the inside of the compensation column, a telescopic end of an electric push rod is fixedly installed on the outside of the push plate, a second pressure sensor is inlaid on the side of the push plate away from the electric push rod, and the second pressure sensor is electrically connected to the electric push rod.

[0007] Furthermore, a first pressure sensor is embedded and installed on the outer side of the electric push rod housing, and a linkage rod is fixedly installed on one side of the push plate close to the electric push rod, and the linkage rod cooperates with the first pressure sensor.

[0008] Furthermore, a fixed base is fixedly installed at the end of the electric push rod away from the push plate, and a locking mechanism is installed between the fixed base and the compensation column.

[0009] Furthermore, the locking mechanism includes two fixed blocks, which are symmetrically fixed on the outside of the fixed base. A plug-in column is slidably installed through the middle of the fixed block, and a locking hole is opened through the outside of the compensation column, which cooperates with the plug-in column.

[0010] Furthermore, a movable plate is fixedly mounted on one end of the plug-in column close to the center of the fixed base.

[0011] Furthermore, an annular plate is fixedly installed on the outer side of one end of the plug-in column away from the fixed block, the annular plate is located on the inner side of the compensation column, a spring is fixedly installed between the fixed block and the annular plate, and the spring is movably sleeved on the outer periphery of the plug-in column.

[0012] The beneficial effects of the utility model are as follows:

[0013] (1) In the spherical compensator for pipeline thermal compensation described in the utility model, when the sealing filler between the outer sleeve and the spherical tube is reduced, the electric push rod drives the push plate and the sealing filler in the compensation column to move until the extrusion pressure between the sealing filler and the spherical tube returns to the set value, that is, the extrusion pressure applied to the second pressure sensor returns to the set value, so that the friction force between the sealing filler and the ball head of the spherical tube is basically always at the optimal value, ensuring the sealing effect while the friction loss is also within a reasonable range.

[0014] (2) The utility model discloses a spherical compensator for pipeline thermal compensation. When filling the sealing filler in the compensation column, the staff pushes the two movable plates closer to each other so that the plug-in column is disengaged from the locking hole. Then the push plate and the electric push rod are pulled out to complete the disassembly. The telescopic end of the electric push rod is shortened and reset to add the sealing filler into the compensation column. Then the two movable plates are pushed closer to each other again. The spring is compressed, and the push plate and the electric push rod are returned to their original positions. The restriction on the movable plates is released. Driven by the elastic force of the spring, the plug-in column is inserted into the locking hole to complete the installation. The steps are simple, the operation difficulty is low, and the replacement efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 A schematic diagram of the overall structure of a spherical compensator for pipeline thermal compensation provided by the utility model;

[0017] Figure 2 A schematic diagram of the internal structure of a spherical compensator for pipeline thermal compensation provided by the utility model;

[0018] Figure 3 A schematic diagram of the installation of a second pressure sensor of a spherical compensator for pipeline thermal compensation provided by the utility model;

[0019] Figure 4 for Figure 2 Enlarged view of point A.

[0020] In the figure: 1. outer sleeve; 2. outer push ring; 3. spherical tube; 4. compensation column; 5. push plate; 6. electric push rod; 7. linkage rod; 8. first pressure sensor; 9. second pressure sensor; 10. fixed base; 11. locking hole; 12. fixed block; 13. movable plate; 14. plug-in column; 15. spring. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0022] like Figure 1-Figure 4 As shown, an embodiment of the utility model provides a spherical compensator for pipeline thermal compensation, including an outer sleeve 1, an outer push ring 2 is installed at the end of the outer sleeve 1 by bolts, a spherical tube 3 is installed inside the outer sleeve 1, and a sealing filler is filled between the outer sleeve 1 and the spherical tube 3 for sealing. The outer side of the outer sleeve 1 is connected to and fixedly installed with a plurality of compensation columns 4 for replenishing the sealing filler, and a push plate 5 is slidably installed on the inner side of the compensation column 4, and the telescopic end of an electric push rod 6 is fixedly installed on the outer side of the push plate 5, and a second pressure sensor 9 is inlaid on the side of the push plate 5 away from the electric push rod 6 for monitoring the pressure between the sealing filler and the ball head of the spherical tube 3, and the second pressure sensor 9 is electrically connected to the electric push rod 6.

[0023] In this embodiment, when the sealing filler between the outer sleeve 1 and the spherical tube 3 is reduced, the extrusion pressure between the sealing filler and the spherical tube 3 is reduced, and the extrusion pressure on the second pressure sensor 9 is reduced. The second pressure sensor 9 sends an electrical signal to the data processor, and the data processor sends an electrical signal to the electric push rod 6. The telescopic end of the electric push rod 6 extends, driving the push plate 5 and the sealing filler in the compensation column 4 to move until the extrusion pressure between the sealing filler and the spherical tube 3 returns to the set value, that is, the extrusion pressure on the second pressure sensor 9 returns to the set value, and the electric push rod 6 stops extending, so that the friction force between the sealing filler and the ball head of the spherical tube 3 is basically always at the optimal value, ensuring the sealing effect while the friction loss is also within a reasonable range.

[0024] Specifically, a fixed base 10 is fixedly installed at the end of the electric push rod 6 away from the push plate 5, and a locking mechanism is installed between the fixed base 10 and the compensation column 4 for fixing the electric push rod 6 to stabilize its subsequent work.

[0025] Specifically, the locking mechanism includes two fixed blocks 12, which are symmetrically fixed on the outside of the fixed base 10. A plug-in column 14 is slidably installed through the middle of the fixed block 12. A locking hole 11 is opened through the outside of the compensation column 4. The locking hole 11 cooperates with the plug-in column 14. A movable plate 13 is fixedly installed on one end of the plug-in column 14 close to the center of the fixed base 10 to facilitate the staff to move the plug-in column 14.

[0026] Specifically, an annular plate is fixedly installed on the outer side of one end of the plug-in column 14 away from the fixed block 12, and the annular plate is located on the inner side of the compensation column 4. A spring 15 is fixedly installed between the fixed block 12 and the annular plate, which is used to drive the plug-in column 14 to insert into the locking hole 11. The spring 15 is movably sleeved on the outer periphery of the plug-in column 14.

[0027] In this embodiment, when filling the sealing filler in the compensation column 4, the staff pushes the two movable plates 13 closer to each other so that the plug-in column 14 is disengaged from the locking hole 11, and then pulls out the push plate 5 and the electric push rod 6 to complete the disassembly. The telescopic end of the electric push rod 6 is shortened and reset, and the sealing filler is added to the compensation column 4. Then, the two movable plates 13 are pushed closer to each other again, and the spring 15 is compressed to return the push plate 5 and the electric push rod 6 to their original positions, thereby releasing the restriction on the movable plate 13. Driven by the elastic force of the spring 15, the plug-in column 14 is inserted into the locking hole 11 to complete the installation. The steps are simple, the operation difficulty is low, and the replacement efficiency is high.

[0028] Specifically, a first pressure sensor 8 is embedded on the outer side of the electric push rod 6 shell to monitor the remaining amount of the sealing filler of the compensation column 4. A linkage rod 7 is fixedly installed on the side of the push plate 5 close to the electric push rod 6, and the linkage rod 7 cooperates with the first pressure sensor 8.

[0029] In this embodiment, as time goes by, the push plate 5 moves to drive the linkage rod 7 to squeeze the first pressure sensor 8, indicating that the amount of sealing filler in the compensation column 4 is small and needs to be replenished. The first pressure sensor 8 sends an electrical signal to the control center to remind the staff to come for filling.

[0030] How it works:

[0031] When the sealing filler between the outer sleeve 1 and the spherical tube 3 is reduced, the extrusion pressure between the sealing filler and the spherical tube 3 is reduced, and the extrusion pressure on the second pressure sensor 9 is reduced. The second pressure sensor 9 sends an electrical signal to the data processor, and the data processor sends an electrical signal to the electric push rod 6. The telescopic end of the electric push rod 6 extends, driving the push plate 5 and the sealing filler in the compensation column 4 to move until the extrusion pressure between the sealing filler and the spherical tube 3 returns to the set value, that is, the extrusion pressure on the second pressure sensor 9 returns to the set value, and the electric push rod 6 stops extending, so that the friction force between the sealing filler and the ball head of the spherical tube 3 is basically always at the optimal value, ensuring the sealing effect while the friction loss is also within a reasonable range.

[0032] As time goes by, the push plate 5 moves and drives the linkage rod 7 to squeeze the first pressure sensor 8, indicating that the amount of sealing filler in the compensation column 4 is small and needs to be replenished. The first pressure sensor 8 sends an electrical signal to the control center to remind the staff to come for filling.

[0033] When filling the sealing filler in the compensation column 4, the staff pushes the two movable plates 13 closer to each other, so that the plug-in column 14 is disengaged from the locking hole 11, and then pulls out the push plate 5 and the electric push rod 6 to complete the disassembly. The telescopic end of the electric push rod 6 is shortened and reset, and the sealing filler is added to the compensation column 4. Then the two movable plates 13 are pushed closer to each other again, and the spring 15 is compressed to return the push plate 5 and the electric push rod 6 to their original positions, and the restriction on the movable plate 13 is released. Driven by the elastic force of the spring 15, the plug-in column 14 is inserted into the locking hole 11 to complete the installation. The steps are simple, the operation difficulty is low, and the replacement efficiency is high.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spherical compensator for pipeline thermal compensation, comprising an outer sleeve (1), an outer push ring (2) is installed at the end of the outer sleeve (1) by bolts, a spherical tube (3) is installed inside the outer sleeve (1), a sealing filler is filled between the outer sleeve (1) and the spherical tube (3), a plurality of compensation columns (4) are fixedly installed on the outer side of the outer sleeve (1), and a push plate (5) is slidably installed on the inner side of the compensation column (4), characterized in that: The telescopic end of the electric push rod (6) is fixedly mounted on the outer side of the push plate (5), and a second pressure sensor (9) is embedded and mounted on the side of the push plate (5) away from the electric push rod (6), and the second pressure sensor (9) is electrically connected to the electric push rod (6).

2. A spherical compensator for pipeline thermal compensation according to claim 1, characterized in that: A first pressure sensor (8) is embedded and installed on the outer side of the housing of the electric push rod (6), and a linkage rod (7) is fixedly installed on the side of the push plate (5) close to the electric push rod (6), and the linkage rod (7) cooperates with the first pressure sensor (8).

3. A spherical compensator for pipeline thermal compensation according to claim 1, characterized in that: A fixed base (10) is fixedly mounted on the end of the electric push rod (6) away from the push plate (5), and a locking mechanism is mounted between the fixed base (10) and the compensation column (4).

4. A spherical compensator for pipeline thermal compensation according to claim 3, characterized in that: The locking mechanism comprises two fixing blocks (12), the two fixing blocks (12) are symmetrically fixedly mounted on the outside of the fixing base (10), a plug-in column (14) is slidably installed through the middle of the fixing block (12), a locking hole (11) is penetrated through the outside of the compensation column (4), and the locking hole (11) cooperates with the plug-in column (14).

5. A spherical compensator for pipeline thermal compensation according to claim 4, characterized in that: A movable plate (13) is fixedly mounted on one end of the plug-in column (14) close to the center of the fixed base (10).

6. A spherical compensator for pipeline thermal compensation according to claim 4, characterized in that: An annular plate is fixedly mounted on the outer side of one end of the plug-in column (14) away from the fixed block (12), the annular plate is located on the inner side of the compensation column (4), a spring (15) is fixedly mounted between the fixed block (12) and the annular plate, and the spring (15) is movably sleeved on the outer periphery of the plug-in column (14).

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