Device for replacing a piping support and method for replacing a piping support on line

Abstract

The present disclosure relates to a device for replacing a pipeline support hanger and an online replacement method of the pipeline support hanger. The device for replacing the pipeline support hanger comprises a bearing device for being connected to a pipeline to bear the falling force of the pipeline and a protection device for being connected to the pipeline to limit the upward movement of the pipeline. After the original support hanger is removed, a new support hanger is installed at the position of the original support hanger. The bearing device is connected to the pipeline to bear the falling force of the pipeline, that is, the pulling force of the original support hanger is transferred to the bearing device, and at this time, the original support hanger is removed, which does not cause the pipeline to move downward. In order to avoid the upward movement of the pipeline due to the removal of the original support hanger and the loss of the downward supporting force, the protection device is arranged to limit the upward movement of the pipeline. In this way, the support hanger can be replaced without stopping the unit, which does not affect the normal operation of the unit and reduces economic losses.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of support hanger replacement, in particular, to a device for replacing a pipeline support hanger and an online replacement method of a pipeline support hanger. BACKGROUND

[0002] Currently, power plant safety production accidents caused by steam pipeline support hanger failure are particularly prominent, in order to improve the safety and reliability of the production operation of thermal power plants, the steam pipeline support hanger failure problem needs to be checked in advance and timely governance.

[0003] When the support hanger is damaged, the support hanger needs to be replaced to eliminate the serious hidden danger of the pipeline, and in the related art, the support hanger needs to be replaced with the unit shutdown, but this will cause economic losses due to the unit shutdown. SUMMARY

[0004] The purpose of the present disclosure is to provide a device for replacing a pipeline support hanger and an online replacement method of a pipeline support hanger, which can solve the above technical problems.

[0005] In order to achieve the above purpose, the present disclosure provides a device for replacing a pipeline support hanger, comprising: a bearing device for connecting to a pipeline to bear the downward force of the pipeline; and a protection device for connecting to the pipeline to limit the upward movement of the pipeline; so that after the original support hanger is removed, a new support hanger is installed at the position of the original support hanger.

[0006] Optionally, the bearing device is arranged above or below the pipeline to provide an upward supporting force for the pipeline, which is equal to the downward force of the pipeline to keep the pipeline stationary; the protection device is arranged on the opposite side of the pipeline where the bearing device is arranged to provide a downward protection force for the pipeline to prevent the upward movement of the pipeline.

[0007] Optionally, the bearing device is configured as a first force applying device capable of adjusting the supporting force, and the protection device is configured as a second force applying device capable of adjusting the protection force.

[0008] Optionally, the original support hanger is configured as a constant force spring support hanger, before the original support hanger is removed, the original support hanger is welded to become a rigid rod, and by increasing the supporting force of the bearing device while reducing the protection force of the protection device, the original support hanger is loosened to remove the original support hanger.

[0009] Optionally, the new support and hanger is configured as a constant force spring support and hanger, one end of the new support and hanger is welded to the original support and hanger at a hanger point position of the original support and hanger, the other end is connected to a third force applying device capable of adjusting the pulling force, a support is arranged on the opposite side of the hanger point position for connecting the third force applying device, and the new support and hanger is pulled away from the pipeline to the working position by the third force applying device.

[0010] Optionally, the support is configured as a portal frame, a hanger rod is connected to the pipeline for connecting the new support and hanger, the portal frame is arranged on one side of the hanger rod, one end of the third force applying device is connected to the portal frame, and the other end is connected to the new support and hanger to connect the new support and hanger to the hanger rod.

[0011] Optionally, a basket nut is connected between the hanger rod and the pipeline.

[0012] Optionally, the device for replacing the pipeline support and hanger is used for replacing the support and hanger of the steam pipeline in a thermal power plant.

[0013] The present disclosure also provides an online replacement method for a pipeline support and hanger, which adopts the device for replacing the pipeline support and hanger described above, and the replacement method comprises the following steps: connecting a load bearing device capable of adjusting the bearing force above or below the pipeline and connecting the load bearing device to the pipeline; arranging a protection device capable of adjusting the protection force on the opposite side of the pipeline on which the load bearing device is arranged and connecting the protection device to the pipeline; welding the original support and hanger configured as a constant force spring support and hanger to become a rigid rod, increasing the bearing force of the load bearing device, reducing the protection force of the protection device, loosening the original support and hanger, and removing the original support and hanger; welding one end of a new support and hanger configured as a constant force spring support and hanger away from the pipeline to the hanger point position of the original support and hanger, and pulling the other end away to the working position by a third force applying device to connect the new support and hanger to a hanger rod arranged on the pipeline; adjusting the applied force of the load bearing device and the third force applying device to transfer the bearing force of the load bearing device to the new support and hanger; and removing the load bearing device, the protection device, and the third force applying device.

[0014] Optionally, a force measuring device is connected to the load bearing device; the pulling force of the third force applying device is reduced, and when the reading of the force measuring device is reduced by a predetermined value, the reduction is stopped, then the bearing force of the load bearing device is reduced, and when the reading of the force measuring device starts to decrease, the reduction is stopped, and the above operation is repeated 3-5 times until the reading of the force measuring device is zero.

[0015] By the technical scheme, in the device for replacing the pipe support hanger provided by the present disclosure, the load bearing device is connected to the pipe to bear the downward force of the pipe, that is, the tension of the original support hanger is transferred to the load bearing device, at this time, the original support hanger is removed, and the pipe is not caused to move downward, in order to avoid the pipe from moving upward due to the removal of the original support hanger and losing the downward supporting force, the protection device is arranged to limit the upward movement of the pipe, so that the support hanger can be replaced without stopping the unit, the normal operation of the unit is not affected, and economic loss is reduced.

[0016] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0018] Figure 1 is a structural schematic view of the pipe before the support hanger is replaced;

[0019] Figure 2 is a structural schematic view of the pipe when the support hanger is replaced.

[0020] EXPLANATION OF REFERENCE NUMERALS

[0021] 1, pipe; 2, original support hanger; 3, new support hanger; 4, boom; 5, third force applying device; 6, support; 7, load bearing device; 8, force measuring device; 9, protection device. DETAILED DESCRIPTION

[0022] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0023] In the present disclosure, the orientation words such as "upper, lower, top, bottom" used without the opposite description generally refer to the upper, lower, top, bottom of the corresponding components in the direction of gravity in the use state. In addition, it should be noted that the terms such as "first, second, third" are used to distinguish one element from another element, and do not have sequential and important meanings. In addition, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements.

[0024] The present disclosure provides a device for replacing a pipe support hanger, comprising: a load bearing device 7 connected to the pipe 1 to bear the downward force of the pipe 1; and a protection device 9 connected to the pipe 1 to limit the upward movement of the pipe 1; so that after the original support hanger 2 is removed, a new support hanger 3 is installed at the position of the original support hanger 2.

[0025] Through the technical scheme, in the device for replacing the pipeline support hanger provided by the present disclosure, the load bearing device 7 is connected to the pipeline 1 to bear the downward force of the pipeline 1, that is, the tension of the original support hanger 2 is transferred to the load bearing device 7, and at this time, the original support hanger 2 is removed, which does not cause the pipeline 1 to move downward. In order to avoid the pipeline 1 from moving upward due to the removal of the original support hanger 2 and losing the downward supporting force, the protection device 9 is arranged to limit the upward movement of the pipeline 1. In this way, the support hanger can be replaced without stopping the operation of the unit, which does not affect the normal operation of the unit and reduces economic losses.

[0026] As an optional embodiment, as shown in Figure 2 The load bearing device 7 is arranged above or below the pipeline 1 to provide an upward supporting force to the pipeline 1, and the supporting force is equal to the downward force of the pipeline 1 to keep the pipeline 1 stationary. The protection device 9 is arranged on the opposite side of the pipeline 1 where the load bearing device 7 is arranged to provide a downward protection force to the pipeline 1 to prevent the pipeline 1 from moving upward, that is, the directions of the supporting force and the protection force are opposite to each other to keep the pipeline 1 balanced and stationary during the replacement of the support hanger. In this way, the unit does not need to be stopped for operation, which does not affect the normal operation of the unit. For example, the load bearing device 7 is arranged above the pipeline 1 to provide an upward tension to the pipeline 1, and the protection device 9 is arranged below the pipeline 1 to provide a downward tension to the pipeline 1. Or, the load bearing device 7 is arranged below the pipeline 1 to provide an upward supporting force to the pipeline 1, and the protection device 9 is arranged above the pipeline 1 to provide a downward pushing force to the pipeline 1. In other embodiments, the load bearing device 7 and the protection device 9 can be arranged on the same side, for example, both arranged below the pipeline 1. At this time, the load bearing device 7 provides an upward supporting force to the pipeline 1, and the protection device 9 provides a downward tension to the pipeline 1.

[0027] In the above embodiment, the load bearing device 7 is configured as a first force applying device for adjusting the supporting force, and the protection device 9 is configured as a second force applying device for adjusting the protection force, that is, the forces of the load bearing device 7 and the protection device 9 are not constant, but adjustable. For example, both the first force applying device and the second force applying device are configured as a chain hoist.

[0028] Optionally, the original support hanger 2 is configured as a constant force spring support hanger, which is designed according to the principle of torque balance. Under the allowable load displacement, the load torque and the spring torque are always balanced. When the pipeline 1 and the equipment supported by the constant force spring support hanger are displaced, a constant supporting force can be provided, so that additional stress is not brought to the pipeline 1 and the equipment. Before the original support hanger 2 is removed, the original support hanger 2 is welded to become a rigid rod, and the original support hanger 2 is loosened by increasing the supporting force of the bearing device 7 and reducing the protection force of the protection device 9 to remove the original support hanger 2. Slowly pull the bearing device 7 while loosening the protection device 9, so that the original support hanger 2 is in a loosened state. At this time, the original support hanger 2 is not stressed, so that the original support hanger 2 can be removed. If the original support hanger 2 is not welded, the spring will contract when the bearing device 7 is pulled, and the original support hanger 2 is still in a stressed state, which is not convenient for removing the original support hanger 2.

[0029] Optionally, the new support hanger 3 is configured as a constant force spring support hanger. The end of the new support hanger 3 away from the pipeline 1 is welded to the hanger point position of the original support hanger 2, and the other end is connected to the third force applying device 5 with adjustable tension. The support 6 is arranged on the opposite side of the hanger point position and is used to connect the third force applying device 5, so that the new support hanger 3 is pulled away from the pipeline 1 to the working position by the third force applying device 5. For example, the top end of the new support hanger 3 is welded to the hanger point of the original support hanger 2, and the bottom end is connected to the third force applying device 5. The third force applying device 5 can be a chain hoist. The support 6 is arranged below the chain hoist, and the chain hoist is connected to the support 6 as a force applying point of the chain hoist. The chain hoist is pulled to pull away the new support hanger 3 and connect it to the pipeline 1.

[0030] The support 6 can be any suitable structure. In this disclosure, the support 6 is configured as a gantry. The hanger rod 4 for connecting the new support hanger 3 is connected to the pipeline 1. The gantry is arranged on one side of the hanger rod 4. One end of the third force applying device 5 is connected to the gantry, and the other end is connected to the new support hanger 3 to connect the new support hanger 3 to the hanger rod 4. For example, the top beam of the gantry can be arranged above the pipeline 1. In this case, one end of the beam is detachably connected to the vertical beam on one side. The top end of the hanger rod 4 passes over the beam so that the bottom end of the new support hanger 3 can be connected to the top end of the hanger rod 4. The beam of the gantry can also be arranged below the pipeline 1. The third force applying device 5 pulls the bottom end of the new support hanger 3 down to connect it to the top end of the hanger rod 4.

[0031] Optionally, a basket nut is connected between the hanger rod 4 and the pipeline 1. The basket nut is used to fine-tune the tension of the hanger rod 4, so that the hanger rod 4 is in a fastened state.

[0032] As an optional implementation, the device for replacing the pipeline support hanger is used for replacing the support hanger on the steam pipeline in the thermal power plant. In recent years, the safety production accidents caused by the failure of the steam pipeline support hanger in the power plant are particularly prominent. In order to improve the safety and reliability of the production operation of the thermal power plant, the failure of the steam pipeline support hanger is checked in advance, and the treatment is performed in time. The device in the present disclosure can realize the elimination of the abnormal support hanger in the non-stop state of the unit.

[0033] As shown in Figures 1-2 The present disclosure also provides an online replacement method of the pipeline support hanger. The device for replacing the pipeline support hanger is used. The replacement method comprises the following steps: connecting the load-bearing device 7 with adjustable supporting force above or below the pipeline 1 and connecting with the pipeline 1; arranging the protection device 9 with adjustable protection force on the opposite side of the pipeline 1 on which the load-bearing device 7 is arranged and connecting with the pipeline 1; welding the original support hanger 2 configured as a constant force spring support hanger to become a rigid rod, increasing the supporting force of the load-bearing device 7, reducing the protection force of the protection device 9, loosening the original support hanger 2, and removing the original support hanger 2; welding the new support hanger 3 configured as a constant force spring support hanger away from the pipeline 1 at the hanger point position of the original support hanger 2, and connecting the other end of the new support hanger 3 to the suspender 4 arranged on the pipeline 1 through the third force applying device 5; adjusting the applied force of the load-bearing device 7 and the third force applying device 5 to make the supporting force of the load-bearing device 7 transferred to the new support hanger 3; and removing the load-bearing device 7, the protection device 9, and the third force applying device 5. The method can replace the support hanger online without stopping the unit, does not affect the normal operation of the unit, and reduces the economic loss.

[0034] Optionally, the load-bearing device 7 is connected with a force measuring device 8, for example, the force measuring device 8 can be a tension gauge. When the reading of the force measuring device 8 is reduced by a predetermined value, the tension of the third force applying device 5 is stopped. The predetermined value can be set according to the specific situation, for example, it can be any value such as 500N, 1000N, 3000N, etc. When the tension of the third force applying device 5 is reduced, the new support hanger 3 is contracted, that is, an upward tension is generated on the pipeline 1, and the new support hanger 3 actually bears the downward force of the pipeline 1. Then, when the reading of the force measuring device 8 starts to decrease, the supporting force is stopped, that is, the supporting force is reduced by a predetermined value. At this time, the load-bearing device 7 transfers part of the supporting force to the new support hanger 3. The above operation is repeated 3-5 times until the reading of the force measuring device 8 is zero. At this time, the supporting force of the load-bearing device 7 is completely transferred to the new support hanger 3, and the load-bearing device 7 is not under stress. The working state of the new support hanger 3 is observed. If the state is normal, the load-bearing device 7, the protection device 9, and the third force applying device 5 can be removed, and the replacement of the support hanger is completed. If the state is abnormal, the load-bearing device 7, the protection device 9, and the third force applying device 5 are removed after fine adjustment through the basket bolt to make it in a normal displacement state.

[0035] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0036] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present disclosure.

[0037] In addition, various different embodiments of the present disclosure can also be combined in any appropriate manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed in the present disclosure.

Claims

1. A device for replacing a pipe support hanger, characterized by, The device for replacing pipe support hangers comprises: a load bearing device for connecting to a pipe to bear the falling force of the pipe; and a protection device for connecting to the pipe to limit the upward movement of the pipe; so that a new support hanger can be installed at the position of the original support hanger after the original support hanger is removed; the load bearing device is arranged above or below the pipe to provide an upward supporting force to the pipe, which is equal to the falling force of the pipe to keep the pipe stationary; the protection device is arranged on the opposite side of the pipe to the side where the load bearing device is arranged to provide a downward protection force to the pipe to prevent the upward movement of the pipe; the original support hanger is configured as a constant force spring support hanger, which is welded to become a rigid rod before the original support hanger is removed, the original support hanger is loosened by increasing the supporting force of the load bearing device while reducing the protection force of the protection device to remove the original support hanger; the new support hanger is configured as a constant force spring support hanger, one end of the new support hanger away from the pipe is welded to the lifting point position of the original support hanger, the other end of the new support hanger is connected to a third force applying device with adjustable tension, a support is arranged on the opposite side of the lifting point position for connecting the third force applying device, the new support hanger is pulled away to the working position and connected to the pipe by the third force applying device; the support is configured as a portal frame, a lifting rod for connecting to the new support hanger is connected to the pipe, the portal frame is arranged on one side of the lifting rod, one end of the third force applying device is connected to the portal frame, and the other end is connected to the new support hanger to connect the new support hanger to the lifting rod. the load bearing device is configured as a first force applying device with adjustable supporting force, and the protection device is configured as a second force applying device with adjustable protection force.

2. The device for replacing a piping support hanger according to claim 1, characterized by, a flower basket nut is connected between the lifting rod and the pipe.

3. The device for replacing a piping support hanger according to claim 1, wherein, The device for replacing pipe support hangers is used for replacing support hangers on steam pipes in a thermal power plant.

4. The device for replacing a piping support hanger according to any one of claims 1 to 3, characterized in that, The online replacement method using the device for replacing pipe support hangers according to any one of claims 1-4 comprises the following steps:

5. A method of online replacement of a pipe support hanger, characterized by, a load bearing device with adjustable supporting force is connected above or below a pipe and connected to the pipe; a protection device with adjustable protection force is arranged on the opposite side of the pipe to the side where the load bearing device is arranged and connected to the pipe; an original support hanger configured as a constant force spring support hanger is welded to become a rigid rod, the original support hanger is loosened by increasing the supporting force of the load bearing device while reducing the protection force of the protection device to remove the original support hanger; a new support hanger configured as a constant force spring support hanger is welded to the lifting point position of the original support hanger away from the pipe, and the other end of the new support hanger is pulled away to the working position by a third force applying device and connected to a lifting rod arranged on the pipe; the applied forces of the load bearing device and the third force applying device are adjusted to transfer the supporting force of the load bearing device to the new support hanger; the load bearing device, the protection device, and the third force applying device are removed. ​ 6. The method of online replacement of piping supports and hangers according to claim 5, wherein, The load bearing device is connected with a force measuring device; the pulling force of the third force applying device is reduced until the reading of the force measuring device is reduced by a predetermined value, then the supporting force of the load bearing device is reduced until the reading of the force measuring device starts to reduce, and the above operation is repeated 3-5 times until the reading of the force measuring device is zero.

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