Pressure conveying pipe capable of monitoring wall thickness in real time and wall thickness monitoring method

Abstract

The invention discloses a pressure conveying pipe capable of monitoring the wall thickness in real time and a wall thickness monitoring method, and relates to the field of pressure conveying pipe monitoring, the pressure conveying pipe comprises a pipe body, at least two supporting pieces are fixed in the pipe body, all the supporting pieces jointly support a rotating shaft, and the axis of the rotating shaft and the axis of the pipe body are collinear; a restraining pipe is fixed to the rotating shaft and is perpendicular to the axis of the rotating shaft. A pressure sensor is fixed at the bottom of the restraint tube, a measuring rod is slidably connected in the restraint tube, a compression spring is arranged between the measuring rod and the pressure sensor, and the compression spring is always in a compressed state; a controller is installed on the rotating shaft, the pressure sensor is connected with the controller, and the controller is provided with an alarm. The wall thickness of the pressure conveying pipe can be monitored in real time, whether the wall thickness of the pressure conveying pipe reaches a critical value or not is judged in time, and the situation that fluid leaks due to the fact that the pressure conveying pipe is damaged due to insufficient wall thickness is avoided; and the real-time monitoring of the wall thickness can be realized without providing energy required by monitoring from the outside.

Description

Technical Field

[0001] The invention relates to the field of pressure delivery pipe monitoring, in particular to a pressure delivery pipe capable of real-time monitoring of wall thickness and a wall thickness monitoring method. Background Art

[0002] Pressure delivery pipe is a kind of pipeline used to transport pressurized fluid (gas or liquid), which is widely used in the transportation of petroleum, chemical industry, natural gas, high-temperature and high-pressure steam. Pressure delivery pipe is a pipeline that bears internal pressure. During operation, it will be eroded by fluid and corrosive fluid, which will cause the wall thickness of the pipeline to gradually decrease, affecting the strength and safety of the pipeline. Under long-term operation, when the wall thickness is reduced to a critical value, especially the critical value of the wall thickness required to withstand pressure, continuing to use the pipeline to transport pressurized fluid will easily cause pipeline damage and fluid leakage, which does not comply with relevant regulations on safe production and transportation. Therefore, the wall thickness of the pressure delivery pipe needs to be tested frequently to understand the real-time wall thickness of the pipeline, so as to timely obtain whether the wall thickness of the pressure delivery pipe has reached the critical value, and to replace the pressure delivery pipe in time to meet relevant regulations on safe production and transportation.

[0003] At present, after the pressure delivery pipe is installed, its wall thickness is usually detected by ultrasonic detection method because it is impossible to put the device for measuring the inner diameter into the pressure delivery pipe. This method uses the propagation and reflection principles of ultrasonic waves to detect changes in pipe wall thickness. This method requires that if the pipe wall thickness is to be continuously monitored, the device used for monitoring (ultrasonic generator, etc.) needs to provide continuous energy. Intermittent detection of wall thickness cannot achieve the purpose of real-time monitoring. The other methods all have the same problem.

[0004] Therefore, for the pressure transmission pipe, a new device and method are needed to monitor the wall thickness of the pipe in real time. Summary of the invention

[0005] The object of the present invention is to provide a pressure delivery pipe and a wall thickness monitoring method capable of real-time monitoring of wall thickness in response to the above-mentioned problems. The wall thickness of the pressure delivery pipe can be monitored in real time, so as to promptly determine whether the wall thickness of the pressure delivery pipe has reached a critical value, effectively avoiding the situation where the pressure delivery pipe is damaged due to insufficient wall thickness and causing fluid leakage, thereby meeting the requirements of safe production and transportation; and real-time monitoring of the wall thickness can be achieved without the need for external energy required for monitoring.

[0006] The technical solution adopted by the present invention is as follows: a pressure delivery pipe capable of monitoring wall thickness in real time, comprising a pipe body with a circular radial cross-section, at least two support members are fixed inside the pipe body and along the axial direction of the pipe body, all the support members jointly support a rotating shaft, the axis of the rotating shaft is collinear with the axis of the pipe body; a constraint tube is fixed on the rotating shaft, the axial direction of the constraint tube is perpendicular to the axis of the rotating shaft; a pressure sensor is fixed to the bottom of the constraint tube, a measuring rod is slidably connected inside the constraint tube, a compression spring is arranged between the measuring rod and the pressure sensor, and the compression spring is always in a compressed state; the rotating shaft has a cavity, a controller is installed in the cavity, the pressure sensor is connected to the controller, and the controller has an alarm.

[0007] Furthermore, the rotating shaft is rotatably connected to all the supporting members.

[0008] Furthermore, a plurality of blades are fixedly arranged at one end of the rotating shaft.

[0009] Furthermore, a plurality of permanent magnets are provided on the support member, and the permanent magnets are arranged around the rotating shaft. An induction coil is provided on the rotating shaft, and the induction coil is located in the magnetic field formed by all the permanent magnets; and the output end of the induction coil is connected to the controller.

[0010] Furthermore, the output end of the induction coil is connected to the controller via a rectifier, and the rectifier is fixed on the rotating shaft.

[0011] Furthermore, a rolling piece is provided at one end of the measuring rod close to the inner wall of the tube body, and the measuring rod abuts against the inner wall of the tube body through the rolling piece.

[0012] Furthermore, there are multiple constraint tubes, each of which has a measuring rod, a compression spring and a pressure sensor; all the constraint tubes are distributed along the axial direction of the rotating shaft, and all the constraint tubes are projected onto the same radial section of the tube body and are distributed in a circumferential array.

[0013] Furthermore, a pad is provided between the compression spring and the pressure sensor.

[0014] Furthermore, connecting flanges are provided at both ends of the tube body.

[0015] A method for monitoring the wall thickness of a pressure delivery pipe, using the pressure delivery pipe capable of real-time monitoring of the wall thickness, comprises the following steps: S1: The compression spring is always in a compressed state. The compression spring has an elastic force, which pushes the measuring rod, and the measuring rod always rests against the inner wall of the tube body; S2: If the wall thickness of the pressure delivery pipe is reduced, the compression degree of the compression spring will be reduced synchronously, the elastic force of the compression spring will be reduced, and the value of the pressure data obtained by the pressure sensor will be reduced; S3: The pressure sensor transmits the acquired pressure data to the controller; S4: The controller obtains pressure data, and converts the deformation of the compression spring according to the value of the pressure data, thereby obtaining the length of the measuring rod extending out of the constraint tube, and then obtaining the inner diameter of the pressure delivery tube; according to the outer diameter of the pressure delivery tube, the wall thickness of the pressure delivery tube can be obtained, and the wall thickness is the real-time wall thickness; S5: If the real-time wall thickness is not greater than the set wall thickness, the controller controls the alarm to make an alarm action; if the real-time wall thickness is greater than the set wall thickness, the controller controls the alarm not to make an alarm action; or if the real-time pressure data is not greater than the set pressure data, the controller controls the alarm to make an alarm action; if the real-time pressure data is greater than the set pressure data, the controller controls the alarm not to make an alarm action.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The change of the inner diameter of the pressure delivery pipe disclosed in the present invention can be reflected in the deformation degree of the compression spring through the measuring rod, and the deformation of the compression spring is obtained through the pressure sensor (the deformation of the compression spring is linearly related to the elastic force). The inner diameter of the pressure delivery pipe can be obtained by obtaining the data of the pressure sensor, and thus the wall thickness of the pressure delivery pipe can be obtained, so that the wall thickness of the pressure delivery pipe can be monitored in real time, and it can be judged in time whether the wall thickness of the pressure delivery pipe reaches the critical value, effectively avoiding the situation that the pressure delivery pipe is damaged due to insufficient wall thickness and causing fluid leakage, thereby meeting the requirements of safe production and transportation; 2. The pressure delivery pipe disclosed in the present invention can utilize the flow of the fluid in the pipe to generate the energy required for wall thickness monitoring, without the need for external energy to provide the monitoring energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 It is a cross-sectional structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 3 It is a schematic diagram of the cross-sectional structure of the rotating shaft disclosed in the present invention; Markings in the figure: 1-tube body; 2-support member; 3-rotating shaft; 31-cavity; 32-sealing cover; 4-blade; 5-permanent magnet; 6-induction coil; 7-controller; 8-rectifier; 9-restraint tube; 10-measuring rod; 11-compression spring; 12-pad; 13-pressure sensor; 14-sealing ring; 15-rolling member; 16-flange. DETAILED DESCRIPTION

[0018] In the description of this specification, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of this specification is usually placed when used. It is only for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this specification.

[0019] In addition, if the terms "horizontal" or "vertical" appear in the description of this specification, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of this specification, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be a connection between the internal parts of two elements.

[0021] Example 1 like Figure 1-Figure 3As shown, a pressure delivery pipe capable of real-time monitoring of wall thickness comprises a pipe body 1 with a circular radial cross section, at least two support members 2 are fixed inside the pipe body 1 and along the axial direction of the pipe body 1, all the support members 2 jointly support a rotating shaft 3, the axis of the rotating shaft 3 is in line with the axis of the pipe body 1; a constraint pipe 9 is fixed on the rotating shaft 3 by welding, the constraint pipe 9 is a hollow pipe, the axis direction of the constraint pipe 9 is perpendicular to the axis of the rotating shaft 3, that is, the direction of the axis of the constraint pipe 9 is actually the radial direction of the pipe body 1; a pressure sensor 13 is fixed to the bottom of the constraint pipe 9, in fact, the pressure sensor 13 is installed in the constraint pipe 9, and the pressure sensor 13 can be fixed on the rotating shaft 3; a measuring device is slidably connected inside the constraint pipe 9 Rod 10, the measuring rod 10 can move along the axial direction of the constraint tube 9; the other end of the measuring rod 10 is located in the constraint tube 9 and a compression spring 11 is arranged between the measuring rod 10 and the pressure sensor 13, and the compression spring 11 is always in a compressed state; that is, the compression spring 11 is in a compressed state, always has elastic force, and the elastic force is linearly related to the compression deformation (compression degree) of the compression spring 11; the elastic force of the compression spring 11 acts on the measuring rod 10, and also acts on the pressure sensor 13; the elastic force acts on the measuring rod 10 so that the measuring rod 10 always rests against the inner wall of the tube body 1, and the elastic force acts on the pressure sensor 13 so that the pressure sensor 13 has pressure data; the tube body 1 When the inner diameter of the tube body 1 changes, the deformation of the compression spring 11 will also change, so that the pressure data obtained by the pressure sensor 13 will also change accordingly; the shaft 3 has a cavity 31, and the controller 7 is installed in the cavity 31, and the controller 7 can move with the shaft 3, and there will be no cable entanglement, etc.; and the cavity 31 is sealed, which can prevent the controller 7 from contacting the fluid in the tube body 1, ensuring the normal operation of the controller 7; the pressure sensor 13 is connected to the controller 7, and the pressure sensor 13 transmits the obtained pressure data to the controller 7, and the controller 7 converts the deformation of the compression spring 11 according to the pressure data, thereby obtaining the inner diameter of the tube body 1, and the outer diameter of the tube body 1 (tube body 1 outer diameter does not contact with the fluid and usually does not change, so the outer diameter of the pipe body 1 is usually a fixed value), and the wall thickness of the pipe body 1 can be accurately obtained; the controller 7 has an alarm. If the real-time wall thickness is not greater than the set wall thickness, the controller 7 controls the alarm to make an alarm action. If the real-time wall thickness is greater than the set wall thickness, the controller 7 controls the alarm not to make an alarm action; or if the real-time pressure data is not greater than the set pressure data, the controller 7 controls the alarm to make an alarm action. If the real-time pressure data is greater than the set pressure data, the controller 7 controls the alarm not to make an alarm action; the alarm mode of the alarm can be a sound alarm, which can enable the inspection personnel to quickly locate the pipe body 1 that generates an alarm outside the pipe body 1.

[0022] To sum up, the change in the inner diameter of the pressure delivery pipe disclosed in the present embodiment can be reflected in the deformation degree of the compression spring 11 through the measuring rod 10, and the deformation of the compression spring 11 is obtained through the pressure sensor 13 (the deformation of the compression spring 11 is linearly related to the elastic force). By obtaining the data of the pressure sensor 13, the inner diameter of the pressure delivery pipe can be obtained, thereby obtaining the wall thickness of the pressure delivery pipe, so that the wall thickness of the pressure delivery pipe can be monitored in real time, and it can be judged in time whether the wall thickness of the pressure delivery pipe reaches the critical value, effectively avoiding the situation where the pressure delivery pipe is damaged due to insufficient wall thickness and causing fluid leakage, thereby meeting the requirements of safe production and transportation.

[0023] like Figure 2 As shown, in order to avoid or reduce the influence of the pressure of the fluid in the tube body 1 on the data obtained by the pressure sensor 13 and improve the accuracy of the wall thickness measurement; in a first feasible implementation, a sealing ring 14 can be set between the constraint tube 9 and the measuring rod 10 to seal the constraint tube 9, prevent the fluid from entering the constraint tube 9 and acting on the pressure sensor 13, and ensure that the pressure data obtained by the pressure sensor 13 only comes from the compression spring 11; specifically, a sealing groove is opened on the inner wall of the constraint tube 9, the sealing ring 14 is installed in the sealing groove, and the measuring rod 10 passes through the sealing ring 14; and the measuring rod 10 will squeeze the sealing ring 14 to achieve the sealing of the constraint tube 9. In a second feasible implementation, a compression spring 11 with a large elastic coefficient K can be selected, so that the change of the pressure data of the pressure sensor 13 mainly comes from the change of the compression degree of the compression spring 11, that is, the compression degree of the compression spring 11 has a slight change, and the pressure data obtained by the pressure sensor 13 will also have a large change, that is, the influence of the pressure fluctuation (usually small) of the fluid can be ignored.

[0024] Example 2 Based on Example 1, a specific implementation method that can be implemented is further proposed.

[0025] A feasible implementation method is that the rotating shaft 3 is rotatably connected to all the supporting members 2. The rotation of the rotating shaft 3 can cause the restraining tube 9 to rotate, and the rotation of the restraining tube 9 can cause the measuring rod 10 to rotate, so as to detect the wall thickness of all positions on the radial section where the measuring rod 10 is located on the tube body 1, thereby improving the comprehensiveness of the detection and avoiding excessive corrosion at a certain position on the same radial section.

[0026] In a feasible implementation, as the power source for the rotation of the shaft 3, a plurality of blades 4 can be fixed at one end of the shaft 3, and the fluid passing through the blades 4 will drive the blades 4 to rotate, and the rotation of the blades 4 will drive the shaft 3 to rotate. In this implementation, the shape, number and distribution of the blades 4 are known to those skilled in the art, and the shape is similar to the windmill blades 4 and the blades 4 of the floating tube hydroelectric generator (refer to the Chinese patent with the publication number "CN206753803U"). The number can be 3, and the distribution method is a circumferential array distribution with the axis of the shaft 3 as the center.

[0027] A feasible implementation manner is that a plurality of permanent magnets 5 are provided on the support member 2, and the permanent magnets 5 are arranged around the rotating shaft 3. Specifically, the permanent magnets 5 are distributed in a circumferential array with the axis of the rotating shaft 3 as the center line, and an induction coil 6 is provided on the rotating shaft 3. The center line of the induction coil 6 is colinear with the axis of the rotating shaft 3 to prevent the induction coil 6 from eccentric rotation; the induction coil 6 is located in the magnetic field formed by all the permanent magnets 5, that is, the permanent magnets 5 located in the same radial direction have different north and south poles close to one end of the rotating shaft 3, so that the magnetic field formed by the plurality of permanent magnets 5 can pass through the rotating shaft 3 and the induction coil 6 installed on the rotating shaft 3; the output end of the induction coil 6 is connected to the controller 7; the permanent magnet 5 is fixed, and the magnetic field formed is unchanged; the rotating shaft 3 rotates under the drive of the blade 4, that is, the induction coil 6 rotates, so that the induction coil 6 cuts the magnetic flux lines, and the induction coil 6 can generate an induced electromotive force, which is connected to the controller 7 to provide the controller 7 with electric energy for continuous operation.

[0028] It is feasible that the controller 7 has its own battery, or the energy input terminal of the controller 7 is connected to the battery, and the induction coil 6 is connected to the battery to charge the battery, and the battery provides the controller 7 with electric energy for continuous operation.

[0029] In a feasible implementation mode, the output end of the induction coil 6 is connected to the controller 7 via a rectifier 8 , and the rectifier 8 is fixed on the rotating shaft 3 . The rectifier 8 converts AC power into DC power to meet the requirements of battery charging and continuous operation of the controller 7 .

[0030] Possible, such as Figure 3 As shown, electronic components such as the induction coil 6, the controller 7, the rectifier 8, etc. can be installed in the cavity 31, and a sealing cover 32 can be provided in the cavity 31. A sealing ring is provided between the sealing cover 32 and the wall of the cavity 31, and the sealing cover 32 can be detachably fixedly connected to the rotating shaft 3 by screws to facilitate the installation of electronic components; the data transmission line of the pressure sensor 13 can pass through the cavity 31 to be connected to the controller 7, that is, a threading hole is provided on the rotating shaft 3, the threading hole is located in the restraint tube 9, and the threading hole can be sealed with sealant to prevent the fluid from entering the cavity 31 through the threading hole and causing corrosion damage to the electronic components.

[0031] In a feasible implementation manner, in order to improve the rotation stability of the rotating shaft 3 , a bearing may be provided at the rotation connection position between the rotating shaft 3 and the supporting member 2 .

[0032] In a feasible implementation manner, a rolling member 15 is provided at one end of the measuring rod 10 close to the inner wall of the tube body 1, and the measuring rod 10 abuts against the inner wall of the tube body 1 through the rolling member 15, thereby reducing the friction between the measuring rod 10 and the inner wall of the tube body 1 and reducing the damage to the measuring rod 10 and the inner wall of the tube body 1 caused by friction.

[0033] Optionally, the rolling element 15 is a ball, which is installed in a manner of being embedded in the measuring rod 10; or the rolling element 15 may also be a roller.

[0034] Example 3 Based on Examples 1-2, feasible specific implementation methods are further proposed.

[0035] In a feasible implementation manner, the number of the constraint tubes 9 is multiple (eg Figure 1 The “…” in the figure indicates that a plurality of “constraint tubes 9” are distributed in an array along the axial direction of the rotating shaft 3 according to the rule shown in the figure), and each constraint tube 9 has a measuring rod 10, a compression spring 11 and a pressure sensor 13; all the constraint tubes 9 are distributed along the axial direction of the rotating shaft 3, that is, the wall thickness of the tube body 1 is measured at multiple positions to improve the pre-tightening capacity of the wall thickness of the tube body 1; all the constraint tubes 9 are projected onto the same radial section of the tube body 1 and are distributed in a circumferential array, so that the centrifugal force generated when the rotating shaft 3 rotates is evenly distributed, thereby improving the service life of the rotating shaft 3.

[0036] In a feasible implementation manner, a pad 12 is provided between the compression spring 11 and the pressure sensor 13 . The compression spring 11 acts on the pad 12 , and the pad 12 transmits the elastic force to the pressure sensor 13 , thereby improving the force stability of the pressure sensor 13 .

[0037] In a feasible implementation manner, connecting flanges 16 are provided at both ends of the pipe body 1 to facilitate the connection of adjacent pipe bodies 1 .

[0038] In a feasible implementation manner, the controller 7 may also be connected to a Bluetooth module, and the Bluetooth module is wirelessly connected to a PC terminal outside the tube body 1 to transmit the implementation data to the PC terminal.

[0039] In a feasible implementation manner, the controller 7 may be a compilable controller 7 such as a microcontroller chip or a PLC.

[0040] Example 4 A method for monitoring the wall thickness of a pressure delivery pipe, using the pressure delivery pipe capable of real-time monitoring of the wall thickness as described in any one of embodiments 1-3, comprises the following steps: S1: The compression spring 11 is always in a compressed state. The compression spring 11 has an elastic force. The elastic force pushes the measuring rod 10 , and the measuring rod 10 always abuts against the inner wall of the tube body 1 .

[0041] S2: If the wall thickness of the pressure delivery pipe is reduced, the compression degree of the compression spring 11 will be reduced synchronously, the elastic force of the compression spring 11 will be reduced, and the value of the pressure data obtained by the pressure sensor 13 will be reduced.

[0042] S3: The pressure sensor 13 transmits the acquired pressure data to the controller 7 .

[0043] S4: The controller 7 obtains pressure data, and converts the deformation of the compression spring 11 according to the value of the pressure data, thereby obtaining the length of the measuring rod 10 extending out of the constraint tube 9, and then obtaining the inner diameter of the pressure delivery tube; according to the outer diameter of the pressure delivery tube, the wall thickness of the pressure delivery tube can be obtained, and the wall thickness is the real-time wall thickness.

[0044] S5: If the real-time wall thickness is not greater than the set wall thickness, the controller 7 controls the alarm to make an alarm action; if the real-time wall thickness is greater than the set wall thickness, the controller 7 controls the alarm not to make an alarm action; or if the real-time pressure data is not greater than the set pressure data, the controller 7 controls the alarm to make an alarm action; if the real-time pressure data is greater than the set pressure data, the controller 7 controls the alarm not to make an alarm action.

[0045] It should be noted that the set wall thickness is the critical value of the pressure transport pipe to withstand pressure, that is, the wall thickness value of the designed wall thickness minus the corrosion allowance. The set pressure data can be converted according to the set wall thickness, and the specific conversion process will not be detailed in this manual.

[0046] The above steps are applicable to both working conditions with and without fluid delivery. For working conditions with fluid delivery, the above steps also include the following steps that exist simultaneously with step S1. Specifically, they include steps S11-S13.

[0047] S11: The fluid flows through the pressure delivery pipe, and the fluid acts on the blades 4, so that the blades 4 rotate, and the blades 4 rotate with the shaft 3.

[0048] S12: The rotation of the rotating shaft 3 causes the constraint tube 9 to rotate, and the constraint tube 9 causes the measuring rod 10 to rotate; the measuring rod 10 fully measures the radial cross section of the tube body 1 where it is located; the measuring steps are detailed in steps S2 to S5.

[0049] S13: Occurs simultaneously with step S12, the shaft 3 rotates driven by the blades 4, and the shaft 3 rotates with the induction coil 6, so that the induction coil 6 cuts the permanent magnet 5 to form magnetic flux lines, and the induction coil 6 can generate an induced electromotive force to provide the controller 7 with electric energy for continuous operation.

[0050] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A pressure delivery pipe capable of real-time monitoring of wall thickness, characterized in that: The invention comprises a tube body (1) having a circular radial cross section, wherein at least two support members (2) are fixed in the tube body (1) and along the axial direction of the tube body (1), wherein all the support members (2) jointly support a rotating shaft (3), wherein the axis of the rotating shaft (3) is colinear with the axis of the tube body (1); a restraining tube (9) is fixed on the rotating shaft (3), wherein the axis direction of the restraining tube (9) is perpendicular to the axis of the rotating shaft (3); a pressure sensor (13) is fixed at the bottom of the restraining tube (9), wherein a measuring rod (10) is slidably connected in the restraining tube (9), wherein a compression spring (11) is arranged between the measuring rod (10) and the pressure sensor (13), and wherein the compression spring (11) is always in a compressed state; the rotating shaft (3) has a cavity (31), wherein a controller (7) is installed in the cavity (31), wherein the pressure sensor (13) is connected to the controller (7), and wherein the controller (7) has an alarm.

2. The pressure delivery pipe according to claim 1, characterized in that: The rotating shaft (3) is rotatably connected to all the supporting members (2).

3. The pressure delivery pipe according to claim 2, characterized in that: A plurality of blades (4) are fixed to one end of the rotating shaft (3).

4. The pressure delivery pipe according to claim 3, characterized in that: A plurality of permanent magnets (5) are disposed on the support member (2), and the permanent magnets (5) are arranged around the rotating shaft (3). An induction coil (6) is disposed on the rotating shaft (3), and the induction coil (6) is located in a magnetic field formed by all the permanent magnets (5); an output end of the induction coil (6) is connected to a controller (7).

5. The pressure delivery pipe according to claim 4, characterized in that: The output end of the induction coil (6) is connected to the controller (7) via a rectifier (8), and the rectifier (8) is fixed on the rotating shaft (3).

6. The pressure delivery pipe according to claim 2, characterized in that: A rolling member (15) is provided at one end of the measuring rod (10) close to the inner wall of the tube body (1), and the measuring rod (10) abuts against the inner wall of the tube body (1) via the rolling member (15).

7. The pressure delivery pipe according to any one of claims 1 to 6, characterized in that: There are a plurality of constraint tubes (9), each of which has a measuring rod (10), a compression spring (11) and a pressure sensor (13); all constraint tubes (9) are distributed along the axial direction of the rotating shaft (3), and all constraint tubes (9) are projected onto the same radial cross section of the tube body (1) to form a circumferential array.

8. The pressure delivery pipe according to any one of claims 1 to 6, characterized in that: A pad (12) is provided between the compression spring (11) and the pressure sensor (13).

9. The pressure delivery pipe according to any one of claims 1 to 6, characterized in that: Connecting flanges (16) are provided at both ends of the tube body (1).

10. A method for monitoring the wall thickness of a pressure delivery pipe, using the pressure delivery pipe capable of real-time monitoring of the wall thickness according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: the compression spring (11) is always in a compressed state, and the compression spring (11) has an elastic force, which pushes the measuring rod (10), and the measuring rod (10) always abuts against the inner wall of the tube body (1); S2: If the wall thickness of the pressure delivery pipe is reduced, the degree of compression of the compression spring (11) will be reduced simultaneously, the elastic force of the compression spring (11) will be reduced, and the value of the pressure data obtained by the pressure sensor (13) will be reduced; S3: The pressure sensor (13) transmits the acquired pressure data to the controller (7); S4: the controller (7) acquires pressure data, and converts the deformation amount of the compression spring (11) according to the value of the pressure data, thereby acquiring the length of the measuring rod (10) extending out of the constraint tube (9), and further acquiring the inner diameter of the pressure delivery tube; based on the outer diameter of the pressure delivery tube, the wall thickness of the pressure delivery tube can be acquired, and the wall thickness is the real-time wall thickness; S5: If the real-time wall thickness is not greater than the set wall thickness, the controller (7) controls the alarm to generate an alarm action; if the real-time wall thickness is greater than the set wall thickness, the controller (7) controls the alarm not to generate an alarm action; or if the real-time pressure data is not greater than the set pressure data, the controller (7) controls the alarm to generate an alarm action; if the real-time pressure data is greater than the set pressure data, the controller (7) controls the alarm not to generate an alarm action.

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