Direct burial compensator with compensation displacement monitoring and positioning functions

Abstract

The utility model provides a direct burial compensator with compensation displacement monitoring and positioning functions, which comprises a direct burial compensator main body, a displacement sensor, a protective cover, a movable end plate and a data acquisition controller, and is characterized in that the direct burial compensator main body is respectively connected with the displacement sensor, the protective cover, the movable end plate, the data acquisition controller and a pipeline; the data acquisition controller is connected with the displacement sensor, and the protective cover covers the displacement sensor, the movable end plate and the data acquisition controller; according to the directly-buried compensator with the compensation displacement monitoring and positioning functions, the compensation displacement of the directly-buried compensator can be monitored in real time, real-time monitoring and remote transmission can be carried out on the real state and the accurate position in the directly-buried compensator deeply buried underground, and remote early warning and alarming functions are provided. The operation and maintenance efficiency of the pipeline operation and maintenance personnel is improved, the safety of the operation and maintenance personnel is enhanced, and then safe operation of the pipeline is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows, in particular to a direct-buried compensator with compensation displacement monitoring and positioning functions. Background Art

[0002] Metal bellows compensator is one of the key components for thermal compensation of modern heating pipe networks and equipment, and has the functions of displacement compensation, vibration reduction, noise reduction and sealing. At present, it has been widely used in thermal pipelines, process piping, machines, pumps and pressure vessels in various industrial sectors such as metallurgy, oil refining, petrochemicals, electricity (thermal power, hydropower and nuclear power), heat network, shipbuilding, construction, cement, aerospace and machinery. However, the metal bellows compensator is a structural element with a certain service life. When the use of the metal bellows compensator reaches a certain number of full displacement cycles, the metal bellows compensator will be damaged. At present, there is almost no monitoring of the compensation displacement of the direct-buried compensator, and because the direct-buried compensator is buried deep, the pipeline maintenance personnel cannot judge the true state and accurate position of the bellows compensator in time, which poses a certain safety risk to the pipeline operation and maintenance. Therefore, it is of great significance to study how to improve the real-time monitoring of the true state and accurate position of the direct-buried compensator.

[0003] In the patent CN205001745U, a direct-buried corrugated compensator is mentioned to have a fixed pipe, a working shell, a bellows, a telescopic end pipe, an intermediate pipe and a rear pipe, and also has a pressure-resistant sealing compensation structure, including a rear end ring, a pressure-resistant sealing ring belt and a protective end ring. The protective end ring is arranged on the telescopic end pipe, and a pressure-resistant sealing ring belt is arranged between the rear end ring and the protective end ring. The pressure-resistant sealing ring belt is fastened to the rear end ring and the protective end ring by a clamping bolt and a clamping ring to form a pressure-resistant sealing compensation structure. In addition, the advantages of anti-corrosion, operation protection and heat loss reduction are achieved, and the leakage of the compensator can be monitored accordingly through the leakage monitoring sensor installed on the protective ring. However, the position of the direct-buried sensor still cannot be located, and the true state of the direct-buried sensor during use cannot be monitored in real time.

[0004] In the patent CN106641546A direct-buried composite sleeve compensator, it includes end pipes, telescopic tubes and sealing fillers, and is characterized in that a bellows is provided on the periphery of the end pipe and the telescopic tube, an outer sleeve is provided on the periphery of the bellows, and fixed end plates connected to the end pipe and the outer sleeve and sliding end plates connected to the telescopic tube are respectively provided at both ends of the bellows. The inner cavity of the bellows forms a sealed chamber, and the fixed end plate is provided with a ground monitoring connecting pipe connected to the inner cavity of the bellows. In the event of filler leakage, the position of the compensator can be found and determined in a timely and accurate manner. However, in the event of filler leakage, the actual state inside the compensating tube cannot be monitored in real time. Utility Model Content

[0005] In view of this, the utility model aims to provide a directly buried compensator with compensation displacement monitoring and positioning functions, so as to solve the problems existing in the prior art that the compensation displacement of the directly buried compensator cannot be monitored in real time, and for the directly buried compensator buried deep underground, maintenance personnel cannot timely judge the true state and accurate position of the bellows compensator, thus affecting the operation and maintenance efficiency and safety; thereby achieving the optimization of the compensator structure, realizing the real-time monitoring of the compensation displacement of the directly buried compensator, and carrying out remote transmission and analysis, and also being able to carry out real-time monitoring and remote transmission of the true state and accurate position inside the directly buried compensator buried deep underground, and providing remote warning and alarm functions, improving the operation and maintenance efficiency of pipeline operation and maintenance personnel, enhancing the safety of operation and maintenance personnel, reducing the risk degree of operation and maintenance, and thus ensuring the safe operation of the pipeline.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows:

[0007] A directly buried compensator with compensation displacement monitoring and positioning functions involved in the utility model, the directly buried compensator with compensation displacement monitoring and positioning functions includes a directly buried compensator main body, a displacement sensor, a protective cover, a movable end plate and a data acquisition controller. The directly buried compensator main body is respectively connected to the displacement sensor, the protective cover, the movable end plate, the data acquisition controller and the pipeline. The data acquisition controller is connected to the displacement sensor, and the protective cover covers the outside of the displacement sensor, the movable end plate and the data acquisition controller.

[0008] Further, the directly buried compensator main body includes a bellows and an outlet end ring. The bellows and the outlet end ring are connected. Both the bellows and the outlet end ring are arranged inside the directly buried compensator main body. One end of the displacement sensor is arranged on the side of the outlet end ring away from the bellows, and the other end of the displacement sensor is connected to the movable end plate in a slidable manner. The protective cover is connected to the outlet end ring.

[0009] Further, the directly buried compensator main body further includes an inlet pipe, an inlet end ring, an outer pipe and an outlet pipe. The inlet pipe, the inlet end ring, the outer pipe, the outlet end ring and the outlet pipe are connected in sequence. The bellows is arranged inside the outlet end ring.

[0010] Further, both the inlet pipe and the outer pipe are perpendicularly arranged with respect to the inlet end ring, and one end of the outer pipe away from the inlet end ring is perpendicularly arranged with respect to the outlet end ring.

[0011] Further, the outer pipe is arranged parallel to the outlet pipe.

[0012] Further, the open end of the protective cover is arranged on the side of the outlet end ring away from the bellows; a sealed cavity is formed between the protective cover and the inside of the outlet end ring.

[0013] Further, the directly buried compensator main body further includes a limit plate, and the limit plate is arranged between the bellows and the outlet end ring.

[0014] Furthermore, the displacement sensor includes a sensor mounting plate, a sensor body, and a sensor moving end; the sensor mounting plate, the sensor body, and the sensor moving end are connected in sequence. The side of the sensor mounting plate away from the sensor body is arranged on the side of the outlet end ring away from the corrugated pipe. An end plate is arranged at the end of the sensor moving end away from the sensor body, and the sensor body is connected to the data acquisition controller.

[0015] Furthermore, the data acquisition controller includes a GPS positioning module, and the GPS positioning module is arranged inside the data acquisition controller.

[0016] Furthermore, there is a certain gap between the protective cover and the outlet pipe.

[0017] Compared with the prior art, the directly buried compensator with the functions of compensating displacement monitoring and positioning of the present utility model has the following beneficial effects:

[0018] Through the setting of the compensator, the real-time monitoring of the compensating displacement of the directly buried compensator can be realized, and remote transmission and analysis can be carried out. It can also monitor the real state and accurate position inside the directly buried compensator buried deep underground in real time and perform remote transmission, and provide remote warning and alarm functions, improve the operation and maintenance efficiency of pipeline operation and maintenance personnel, enhance the safety of operation and maintenance personnel, reduce the risk degree of operation and maintenance, and thus ensure the safe operation of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the directly buried compensator.

[0021] Description of the reference numerals: 1, ground; 2, soil; 3, directly buried compensator body; 31, corrugated pipe; 32, outlet end ring; 33, inlet pipe; 34, inlet end ring; 35, outer pipe; 36, outlet pipe; 37, limit plate; 4, displacement sensor; 41, sensor mounting plate; 42, sensor body; 43, sensor moving end; 5, protective cover; 6, end plate; 7, data acquisition controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following text will use the terms that those skilled in the art usually use to convey the essence of their work to other technicians in the field to describe the inventive concepts of the present disclosure. However, these inventive concepts can be embodied in many different forms and should not be considered limited to the embodiments described herein.

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0024] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0025] This embodiment is directed to a compensator. Similar to a conventional compensator, the overall structure is composed of a bellows, end pipes, and guide brackets.

[0026] In the prior art, a metal bellows compensator is a structural element with a certain service life. When the metal bellows compensator reaches a certain number of full displacement cycles, the metal bellows compensator will be damaged. Currently, there is almost no monitoring of the compensation displacement of directly buried compensators. Moreover, due to the relatively deep burial of directly buried compensators, pipeline maintenance personnel cannot timely judge the true state and accurate position of the bellows compensator, posing a certain safety risk to pipeline operation and maintenance.

[0027] To solve the problems in the prior art that the compensation displacement of directly buried compensators cannot be monitored in real time, and for directly buried compensators buried deep underground, maintenance personnel cannot timely judge the true state and accurate position of the bellows compensator, thus affecting the operation and maintenance efficiency and safety; this embodiment proposes a directly buried compensator with compensation displacement monitoring and positioning functions, including a directly buried compensator main body 3, a displacement sensor 4, a protective cover 5, a movable end plate 6, and a data acquisition controller 7. The directly buried compensator main body 3 is respectively connected to the displacement sensor 4, the protective cover 5, the movable end plate 6, the data acquisition controller 7, and the pipeline. The data acquisition controller 7 is connected to the displacement sensor 4. The protective cover 5 covers the outside of the displacement sensor 4, the movable end plate 6, and the data acquisition controller 7. The directly buried compensator main body 3 includes a bellows 31 and an outlet end ring 32. The bellows 31 and the outlet end ring 32 are connected. Both the bellows 31 and the outlet end ring 32 are arranged inside the directly buried compensator main body 3. One end of the displacement sensor 4 is arranged on the side of the outlet end ring 32 away from the bellows 31, and the other end of the displacement sensor 4 is connected to the movable end plate 6 in a slidable manner. The protective cover 5 is connected to the outlet end ring 32.

[0028] Through the setting of the compensator, the structural setting of the compensator can be optimized, the compensation displacement of the directly buried compensator can be monitored in real time, remotely transmitted and analyzed. It can also monitor the true state and accurate position inside the directly buried compensator buried deep underground in real time and remotely transmit them, and provide remote warning and alarm functions, improve the operation and maintenance efficiency of pipeline maintenance personnel, enhance the safety of maintenance personnel, reduce the risk level of operation and maintenance, and thus ensure the safe operation of the pipeline.

[0029] The main body 3 of the directly buried compensator further includes an inlet pipe 33, an inlet end ring 34, an outer pipe 35, and an outlet water pipe 36. The inlet pipe 33, the inlet end ring 34, the outer pipe 35, the outlet end ring 32, and the outlet water pipe 36 are connected in sequence, and the corrugated pipe 31 is arranged inside the outlet end ring 32. Both the inlet pipe 33 and the outer pipe 35 are perpendicularly arranged with respect to the inlet end ring 34, one end of the outer pipe 35 away from the inlet end ring 34 is perpendicularly arranged with respect to the outlet end ring 32, and the outer pipe 35 is parallel to the outlet water pipe 36. The open end of the protective cover 5 is arranged on one side of the outlet end ring 32 away from the corrugated pipe 31. A sealed cavity is formed between the protective cover 5 and the inside of the outlet end ring 32, which is used to protect the displacement sensor 4, the movable end plate 6, and the data acquisition controller 7, and improve the accuracy of compensator detection. In addition, the main body 3 of the directly buried compensator further includes a limit plate 37, and the limit plate 37 is arranged between the corrugated pipe 31 and the outlet end ring 32, which is used to limit the axial displacement of the corrugated pipe 31 and ensure its expansion and contraction within the normal displacement range.

[0030] Through the arrangement of the components inside the main body 3 of the directly buried compensator, it is beneficial to simplify the structure of the main body 3 of the directly buried compensator, improve the accuracy of measuring the compensation displacement change of the corrugated pipe 31, and also beneficial to enhance the internal sealing performance of the directly buried compensator and reduce the cost of the compensator.

[0031] There is a certain gap between the side of the protective cover 5 facing the outlet water pipe 36 and the outlet water pipe 36. This is used to reduce the pressure of the protective cover 5 on the outlet water pipe 36 and also reduce the friction force between the movable end plate 6 and the outlet water pipe 36. The outer side of the protective cover 5 is on the same straight line as the outer side of the outer pipe 35. The distance between the outer side of the protective cover 5 and the ground 1 is Hm, where H is a positive integer. In this embodiment, H is taken as 2.

[0032] Through the arrangement of the protective cover 5, it is beneficial to improve the safety of the displacement sensor 4 and the data acquisition controller 7 arranged on the compensator, prevent the soil 2 or the internal liquid of the compensator from leaking, and thus avoid the phenomenon that affects the accuracy of measuring the true state of the compensator. The protective cover 5 can also play a role in supporting and limiting the movable end plate 6, avoiding the change of measurement accuracy caused by the deformation of the pipeline, and further enhancing the reliability of compensator measurement.

[0033] The displacement sensor 4 includes a sensor mounting plate 41, a sensor body 42, and a sensor movable end 43; the sensor mounting plate 41, the sensor body 42, and the sensor movable end 43 are connected in sequence. One side of the sensor mounting plate 41 away from the sensor body 42 is arranged on the side of the outlet end ring 32 away from the corrugated pipe 31. One end of the sensor movable end 43 away from the sensor body 42 is provided with a movable end plate 6, and the sensor body 42 is connected to the data acquisition controller 7. The sensor mounting plate 41, the sensor body 42, the sensor movable end 43, the movable end plate 6, and the data acquisition controller 7 are all arranged inside the protective cover 5 to ensure the accuracy of the displacement sensor 4 measurement during the operation of the directly buried compensator. The data acquisition controller 7 includes a GPS positioning module, and the GPS positioning module is arranged inside the data acquisition controller 7 to realize the real-time positioning of the directly buried compensator, which is convenient for pipeline maintenance personnel to perform on-site maintenance and repair.

[0034] Through the settings of the sensor mounting plate 41, the sensor body 42, and the sensor movable end 43, it is beneficial to realize the real-time monitoring and accurate measurement of the compensation displacement of the corrugated pipe 31. Through the setting of the data acquisition controller 7, it is beneficial to perform real-time monitoring and remote transmission of the operating displacement and cycle times of the directly buried compensator, and it can provide remote warning and alarm functions. Moreover, due to the setting of the GPS positioning module, it can also facilitate the maintenance personnel to obtain the position of the directly buried compensator, improve the maintenance efficiency of the compensator abnormality by the maintenance personnel, and thus can greatly reduce the workload of the pipeline maintenance personnel.

[0035] Assembly method of a directly buried compensator with compensation displacement monitoring and positioning functions:

[0036] After the directly buried compensator and the pipeline are welded together, first fix the sensor mounting plate 41 on the directly buried compensator main body 3. Secondly, install the sensor body 42 and the sensor movable end 43, and at this time the displacement value is zero. Then, weld the protective cover 5 outside the displacement sensor 4 to place the displacement sensor 4 in an independent space, completing the assembly of the directly buried compensator with compensation displacement monitoring and positioning functions.

[0037] An early warning method for a directly buried compensator with compensation displacement monitoring and positioning functions, the method is applied to the directly buried compensator with compensation displacement monitoring and positioning functions, and the method includes the following steps:

[0038] Step 1: Preset the compensation displacement value S0 of the corrugated pipe 31, and judge whether the directly buried compensator is in a normal operating state through the data acquisition controller 7. If yes, execute Step 2; if not, the directly buried compensator is in a parking or maintenance state, and execute Step 4;

[0039] Step 2: Obtain the measured displacement data S in the displacement sensor 4 acquired by the data acquisition controller 7, and perform hierarchical early warning processing according to the relationship between the measured displacement and the compensation displacement value S0 of the preset bellows 31;

[0040] Step 3: The program in the data acquisition controller 7 stops calculating and sends an alarm message to the client. The pipeline maintenance personnel perform on-site repair or maintenance according to the positioning information.

[0041] Through the setting of the above method, the function of remote early warning and alarm can be provided for the client. When the displacement exceeds the rated value, remote hierarchical alarm is carried out. The pipeline maintenance personnel can quickly reach the site according to the positioning information of the alarm compensator fed back by the data acquisition controller 7, which greatly reduces the workload of the pipeline maintenance personnel, thereby more efficiently ensuring the safe operation of the pipeline.

[0042] Among them, Step 2 includes:

[0043] Step S31: Obtain the measured displacement data S in the displacement sensor 4 acquired by the data acquisition controller 7;

[0044] Step S32: Judge whether the current S = S0? If yes, execute the level I early warning and execute Step S35; if not, execute Step S33;

[0045] Step S33: Judge whether the current S = 110% * S0. If yes, execute the level II early warning and execute Step S35; if not, execute Step S34;

[0046] Step S34: Judge whether the current S = 120% * S0. If yes, execute the level III early warning and execute Step S35; if not, execute Step 3;

[0047] Step S35: Adjust the current data acquisition frequency f = 2f. After the early warning is eliminated, restore the current data acquisition frequency to f and execute Step S36;

[0048] Step S36: Calculate the current measured displacement data S through the program again to obtain the number of cycles of the bellows 31, and remotely transmit it to the client through the data acquisition controller 7; return to Step 1 to perform real-time monitoring of the state of the directly buried compensator at the next moment.

[0049] Through the processing method of calculating the current measured displacement data S again after hierarchical early warning in Step 3, it is possible to realize real-time monitoring of the operating displacement and the number of cycles of the directly buried compensator, and display the full displacement number of cycles. And it can perform real-time monitoring and remote transmission of the operating displacement, number of cycles and position information of the directly buried compensator, and provide remote early warning and alarm functions, which is convenient for on-site maintenance and repair, greatly reducing the workload of pipeline maintenance personnel, thereby more efficiently ensuring the safe operation of the pipeline.

[0050] In the present utility model, for any compensator, it may include the directly buried compensator structure with the functions of compensating displacement monitoring and positioning described in this embodiment. And based on the relevant structures and assembly relationships of the displacement sensor 4 and the protective cover 5 provided in this embodiment, the compensator further includes conventional components such as a corrugated pipe 31, end pipes, guide brackets, etc. Since they are all prior arts, no further elaboration will be made here.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A direct buried compensator with compensation displacement monitoring and positioning functions, characterized in that: The invention comprises a direct-buried compensator body (3), a displacement sensor (4), a protective cover (5), a movable end plate (6) and a data acquisition controller (7); the direct-buried compensator body (3) is respectively connected to the displacement sensor (4), the protective cover (5), the movable end plate (6), the data acquisition controller (7) and a pipeline; the data acquisition controller (7) is connected to the displacement sensor (4); and the protective cover (5) is arranged outside the displacement sensor (4), the movable end plate (6) and the data acquisition controller (7).

2. The direct buried compensator with compensation displacement monitoring and positioning functions according to claim 1 is characterized in that: The direct-buried compensator body (3) comprises a bellows (31) and an outlet end ring (32), the bellows (31) and the outlet end ring (32) are connected, the bellows (31) and the outlet end ring (32) are both arranged inside the direct-buried compensator body (3), one end of the displacement sensor (4) is arranged on a side of the outlet end ring (32) away from the bellows (31), the other end of the displacement sensor (4) is connected to a movable end plate (6) in a slidable manner, and the protective cover (5) is connected to the outlet end ring (32).

3. The direct buried compensator with compensation displacement monitoring and positioning functions according to claim 2 is characterized in that: The direct-buried compensator body (3) further comprises an inlet pipe (33), an inlet end ring (34), an outer pipe (35), and a water outlet pipe (36); the inlet pipe (33), the inlet end ring (34), the outer pipe (35), the outlet end ring (32), and the water outlet pipe (36) are connected in sequence, and the bellows (31) is arranged inside the outlet end ring (32).

4. The direct buried compensator with compensation displacement monitoring and positioning functions according to claim 3 is characterized in that: The inlet pipe (33) and the outer pipe (35) are both arranged perpendicularly to the inlet end ring (34), and one end of the outer pipe (35) away from the inlet end ring (34) is arranged perpendicularly to the outlet end ring (32).

5. The direct buried compensator with compensation displacement monitoring and positioning functions according to claim 3 is characterized in that: The outer pipe (35) and the water outlet pipe (36) are arranged in parallel.

6. The direct buried compensator with compensation displacement monitoring and positioning functions according to claim 2 is characterized in that: The open end of the protective cover (5) is arranged on one side of the bellows (31) in the outlet end ring (32); the protective cover (5) and the interior of the outlet end ring (32) form a closed cavity.

7. The direct buried compensator with compensation displacement monitoring and positioning functions according to claim 3 is characterized in that: The direct-buried compensator body (3) further comprises a limit plate (37), wherein the limit plate (37) is arranged between the bellows (31) and the outlet end ring (32).

8. The direct buried compensator with compensation displacement monitoring and positioning functions according to claim 2 is characterized in that: The displacement sensor (4) comprises a sensor mounting plate (41), a sensor body (42) and a sensor movable end (43); the sensor mounting plate (41), the sensor body (42) and the sensor movable end (43) are connected in sequence, the side of the sensor mounting plate (41) away from the sensor body (42) is arranged on the side of the outlet end ring (32) away from the bellows (31), the end of the sensor movable end (43) away from the sensor body (42) is provided with a movable end plate (6), and the sensor body (42) is connected to a data acquisition controller (7).

9. The direct buried compensator with compensation displacement monitoring and positioning functions according to claim 8 is characterized in that: The data acquisition controller (7) comprises a GPS positioning module, and the GPS positioning module is arranged inside the data acquisition controller (7).

10. The direct buried compensator with compensation displacement monitoring and positioning functions according to claim 3 is characterized in that: There is a certain gap between the protective cover (5) and the water outlet pipe (36).

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