A displacement monitoring structure of a pipe expansion joint and a pipe expansion joint

Abstract

The embodiment of the application provides a displacement monitoring structure of a pipeline expansion joint and the pipeline expansion joint, the pipeline expansion joint comprises an outer sleeve, the outer sleeve is matched with an inner sleeve, the inner sleeve comprises an upstream inner sleeve and a downstream inner sleeve, and the outer sleeve is provided with the displacement monitoring structure relative to at least one of the upstream inner sleeve and the downstream inner sleeve; the displacement monitoring structure comprises a sensing target and a sensor; the sensing target is fixedly connected with the inner sleeve, the sensor is fixedly connected with the outer sleeve; the sensor and the sensing target are oppositely arranged; when the outer sleeve moves, the sensor moves relative to the sensing target, so that the displacement of the outer sleeve relative to the inner sleeve is measured through the sensor, the displacement deformation degree of the pipeline expansion joint is measured through the displacement monitoring structure, and the accuracy of measurement data is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline expansion joint, in particular to a displacement monitoring structure of pipeline expansion joint and pipeline expansion joint. BACKGROUND

[0002] In the water power station and other places, pipeline expansion joint is usually used to compensate the large displacement deformation of the two sides of the pipeline, so as to ensure the sealing effect when the displacement deformation occurs in the two sides of the pipeline.

[0003] Since displacement deformation may occur in the use of pipeline expansion joint, the displacement deformation degree of large expansion joint needs to be monitored to ensure the effectiveness of sealing, but the existing measurement data is not accurate. SUMMARY

[0004] In view of the above problems, a displacement monitoring structure of pipeline expansion joint and pipeline expansion joint are provided to overcome the above problems or at least partially solve the above problems, comprising:

[0005] A displacement monitoring structure of pipeline expansion joint, the outer sleeve and the inner sleeve of the pipeline expansion joint are connected, the inner sleeve includes an upstream inner sleeve and a downstream inner sleeve, and the outer sleeve is provided with the displacement monitoring structure relative to at least one of the upstream inner sleeve and the downstream inner sleeve; the displacement monitoring structure includes a sensing target and a sensor;

[0006] The sensing target is fixedly connected with the inner sleeve, and the sensor is fixedly connected with the outer sleeve; the sensor and the sensing target are arranged oppositely;

[0007] When the outer sleeve moves, the sensor moves relative to the sensing target to measure the displacement of the outer sleeve relative to the inner sleeve through the sensor.

[0008] Optionally, the sensor includes a plurality of first sensors, and the displacement and inclination of the entire plane where the sensing target contacts the first sensor are determined by the displacement data measured by the plurality of first sensors.

[0009] Optionally, the displacement data measured by a second sensor and the displacement data measured by any two first sensors are combined for correction.

[0010] Optionally, the number of sensors is 4, the number of first sensors is 3, and the number of second sensors is 1.

[0011] Optionally, the sensor is a contact displacement sensor.

[0012] Optionally, the sensor is connected with an amplifier, and the amplifier is used for amplifying the signal collected by the sensor.

[0013] Optionally, the sensor is provided with a top rod, and the top rod of the sensor abuts against one side of the sensing target.

[0014] Optionally, the outer sleeve has an outer sleeve flange, and the sensor is fixedly connected with the outer sleeve flange through a sensor support.

[0015] Optionally, the outer sleeve flange has a ring body and a plurality of protruding parts, the plurality of protruding parts are connected with the ring body, and the sensor support is fixedly connected with one protruding part of the outer sleeve flange.

[0016] Optionally, the displacement monitoring structure comprises a target support, one end of the target support is fixedly connected with the inner sleeve, and the sensing target is fixedly connected with the other end of the target support.

[0017] Optionally, the sensing target comprises a supporting part and a sensing part, the supporting part is fixedly connected with the target support, and the sensing part abuts against the top rod of the sensor.

[0018] Optionally, the sensing target is a metal sensing target, and the sensing part, or the supporting part and the sensing part are made of metal material.

[0019] Optionally, the target support is fixedly connected with the inner sleeve in a gluing manner.

[0020] Optionally, the outer sleeve is provided with the displacement monitoring structure relative to the upstream inner sleeve and the downstream inner sleeve, and the sensors in the displacement monitoring structures provided relative to the upstream inner sleeve and the downstream inner sleeve are symmetrically arranged.

[0021] A pipe expansion joint comprises the displacement monitoring structure as described above.

[0022] The embodiment of the present application has the following advantages:

[0023] In the embodiment of the present application, the pipe expansion joint comprises an outer sleeve and an inner sleeve, the outer sleeve is matched with the inner sleeve, the inner sleeve comprises an upstream inner sleeve and a downstream inner sleeve, the outer sleeve is provided with the displacement monitoring structure relative to at least one of the upstream inner sleeve and the downstream inner sleeve; the displacement monitoring structure comprises a sensing target and a sensor; the sensing target is fixedly connected with the inner sleeve, and the sensor is fixedly connected with the outer sleeve; the sensor is arranged opposite to the sensing target; when the outer sleeve moves, the sensor moves relative to the sensing target to measure the displacement of the outer sleeve relative to the inner sleeve through the sensor, so that the displacement deformation degree of the pipe expansion joint is measured through the displacement monitoring structure, and the accuracy of the measurement data is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is a schematic view of a pipe expansion joint provided by some embodiments of the present application;

[0026] Figure 2 is a schematic view of another pipe expansion joint provided by some embodiments of the present application;

[0027] Figure 3 is a schematic view of an outer sleeve flange provided by some embodiments of the present application.

[0028] The drawings are as follows: 1, upstream inner sleeve, 2, water seal pressure ring, 3, corrugated tube water seal, 4, outer sleeve, 5, water seal material, 6, downstream inner sleeve, 7, metal sensing target, 8, target support, 9, upstream sensor, 10, sensor support, 11, outer sleeve flange, 12, downstream sensor. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] In places such as hydropower stations, pipe expansion joints are often used to compensate for the large displacement deformation of the two sides of the pipe, and to ensure the sealing effect when the two sides of the pipe are displaced and deformed.

[0031] Due to the displacement and deformation that may occur during the use of the pipe expansion joint, large expansion joints need to monitor the degree of displacement and deformation to ensure the effectiveness of the seal, but the existing measurement data is not accurate.

[0032] In related technologies, such as Figure 1 , the outer sleeve 4 and the inner sleeve are connected in the pipe expansion joint, the inner sleeve can include an upstream inner sleeve 1 and a downstream inner sleeve 6, the outer sleeve 4 is provided with an outer sleeve flange 11, the outer sleeve flange 11 is provided with a sensor support 10, the sensor support 10 is provided with a sensor, such as an upstream sensor 9 and a downstream sensor 12, and a sensing target 7 is provided on the side wall.

[0033] In actual application, the distance between the expansion joint and the side wall sensor measuring point is measured by using the sensing target fixed on the side wall and the sensor, and then the displacement of the pipe expansion joint is determined to monitor the degree of displacement and deformation of the pipe expansion joint.

[0034] However, in some scenarios, such as for pipe expansion joints deployed in hydropower stations, due to the vibration of the powerhouse during unit operation, the sensing target fixed on the side wall will vibrate, which will cause the measurement data of the sensor to be inaccurate.

[0035] In the embodiments of the present application, the sensing target is fixed on the target support, and the target support is glued to the inner sleeve, so that in some scenarios, such as for pipe expansion joints deployed in hydropower stations, even if the powerhouse vibrates during unit operation, the sensing target will not vibrate due to being fixed on the side wall, ensuring that the measurement data of the sensor is not inaccurate, and improving the stability and safety of equipment operation.

[0036] Specifically, as Figure 2 , the outer sleeve 4 and the inner sleeve are connected in the pipe expansion joint, the inner sleeve can include an upstream inner sleeve 1 and a downstream inner sleeve 6, one end of the outer sleeve 4 is connected with the upstream inner sleeve 1, the other end of the outer sleeve 4 is connected with the upstream inner sleeve 1, and the function of the pipe expansion joint is realized.

[0037] In some examples, a water seal pressure ring 2, a corrugated pipe water seal 3, and a water seal material 5 are further provided between the outer sleeve 4 and the inner sleeve, and the water seal pressure ring 2, the corrugated pipe water seal 3, and the water seal material 5 can be used to connect the outer sleeve 4 and the inner sleeve in the pipe expansion joint.

[0038] In actual application, in order to measure the displacement deformation degree of the pipe expansion joint, the accuracy of the measurement data is improved, the displacement monitoring structure is arranged on at least one of the outer sleeve 4 relative to the upstream inner sleeve 1 and the downstream inner sleeve 6, which can include that the displacement monitoring structure is arranged on the outer sleeve 4 relative to the upstream inner sleeve 1, or the displacement monitoring structure is arranged on the outer sleeve 4 relative to the downstream inner sleeve 6, or the displacement monitoring structure is arranged on the outer sleeve 4 relative to the upstream inner sleeve 1 and the downstream inner sleeve 6.

[0039] In some embodiments of the present application, the displacement monitoring structure is arranged on the outer sleeve 4 relative to the upstream inner sleeve 1 and the downstream inner sleeve 6, and the sensors in the displacement monitoring structure arranged on the outer sleeve 4 relative to the upstream inner sleeve 1 (i.e. the upstream sensor 9) and the sensors in the displacement monitoring structure arranged on the outer sleeve 4 relative to the downstream inner sleeve 6 (i.e. the downstream sensor 12) are symmetrically arranged.

[0040] In some embodiments of the present application, the displacement monitoring structure includes the sensing target 7, such as the upstream sensing target and the downstream sensing target, and the sensing target 7 is fixedly connected with the inner sleeve, such as the upstream sensing target being fixedly connected with the upstream inner sleeve 1 and the downstream sensing target being fixedly connected with the downstream inner sleeve 6.

[0041] In some embodiments of the present application, the displacement monitoring structure can include the target support 8, one end of the target support 8 is fixedly connected with the inner sleeve, and the other end of the target support 8 is fixedly connected with the sensing target 7, that is, the sensing target 7 is fixed on the inner sleeve through the target support 8.

[0042] In some examples, the sensing target and the target support can be detachable, such as detachable connection through bolts and the like, of course, can also be integrally formed.

[0043] In some embodiments of the present application, the target support 8 can be fixedly connected with the inner sleeve in a manner of gluing, such as fixing the target support on the inner sleeve in a manner of gluing and binding, so as to avoid damage to the inner sleeve.

[0044] In some examples, the target support 8 can also be directly welded on the inner sleeve.

[0045] In some embodiments of the present application, the sensing target 7 includes a supporting part and a sensing part, the supporting part is fixedly connected with the target support, and the sensing part is abutted with the top rod of the sensor.

[0046] In some examples, the supporting part and the sensing part can constitute an L-shaped sensing target, such as the supporting part being perpendicular to the inner sleeve and the sensing part being parallel to the inner sleeve, on the one hand, the sensing target can be fixed on the inner sleeve through the supporting part, and on the other hand, the displacement monitoring can be performed through the sensing part cooperating with the sensor.

[0047] In some embodiments of the present application, the sensing target can be a metal sensing target, the sensing part can be made of metal material, and the supporting part can be made of other materials, or the supporting part and the sensing part can both be made of metal material, and the metal sensing part can be matched with the sensor.

[0048] In some examples, the metal material can be copper, iron, stainless steel, etc.

[0049] In some examples, the angle between the supporting part and the sensing part is adjustable, and the relative arrangement of the sensing part and the sensor can be facilitated by adjusting the angle between the supporting part and the sensing part.

[0050] The displacement monitoring structure further comprises sensors, such as upstream sensor 9 and downstream sensor 12, which are fixedly connected to the outer sleeve, such as upstream sensor 9 being fixed to the outer sleeve on the side close to the upstream inner sleeve 1 and downstream sensor 12 being fixed to the outer sleeve on the side close to the downstream inner sleeve 6.

[0051] In some examples, the sensor can be a displacement sensor, such as a contact displacement sensor, which can detect the movement of the position by cooperating with the sensing target to generate measurement data. In some embodiments of the present application, the outer sleeve 4 has an outer sleeve flange 11, and the sensor is fixedly connected to the outer sleeve flange through a sensor support.

[0052] As shown in Figure 3 , the outer sleeve flange has a ring body and a plurality of protruding parts, such as four protruding parts towards the top end, the bottom end, the right bank and the left bank, which are connected to the ring body, and one of the protruding parts of the outer sleeve flange is fixedly connected to the sensor, such as Figure 3 the sensor support is fixedly connected to the protruding part towards the left bank, and the sensor is connected to the sensor support.

[0053] In some embodiments of the present application, the sensor comprises a plurality of sensors, the displacement data measured by a plurality of first sensors among the plurality of sensors is used to determine the displacement and inclination of the entire plane where the sensing target contacts the first sensor. The displacement data measured by a second sensor among the plurality of sensors is combined with the displacement data measured by any two first sensors to perform correction.

[0054] In embodiments of the present application, the displacement and inclination of the entire plane are measured by a plurality of first sensors, which improves the accuracy of measurement, and the second sensor is used for correction, which further improves the accuracy.

[0055] In some examples, the number of sensors is 4, the number of first sensors is 3, and the number of second sensors is 1.

[0056] In practical applications, the four sensors are uniformly arranged, the displacement data measured by the three sensors can determine the displacement and inclination of the entire plane, and the displacement data measured by the fourth sensor is combined with the displacement data measured by any two sensors to correct.

[0057] In some examples, the first sensor and the second sensor can be the same type of sensor, such as a contact displacement sensor, and then the displacement data measured by the three contact sensors can determine the displacement and inclination of the entire plane, and the displacement data measured by the fourth contact sensor is combined with the displacement data measured by any two contact sensors to correct.

[0058] In some examples, other types of third sensors can also be provided, such as a laser displacement sensor, and the final displacement data is obtained according to the displacement data measured by the laser displacement sensor and the displacement data measured by the contact sensor, thereby improving the accuracy of displacement measurement.

[0059] In some embodiments of the present application, the sensor is connected to an amplifier, and the amplifier is used to amplify the signal collected by the sensor. The signal collected by the sensor is processed after being amplified by the amplifier, thereby being able to detect subtle displacement and improving the accuracy of detection.

[0060] The sensor and the sensing target are arranged opposite to each other, such as the upstream sensor 9 and the upstream sensing target, and the downstream sensor 12 and the downstream sensing target are arranged opposite to each other. The relative arrangement means that the sensor and the sensing target are in contact with each other, or the sensor and the sensing target are not in contact but at least partially relative.

[0061] In some embodiments of the present application, the sensor is provided with a top rod, and the top rod of the sensor abuts one side of the sensing target, such as the top rod of the upstream sensor 9 abutting the side of the upstream sensing target 7, and the top rod of the downstream sensor 12 abutting the side of the downstream sensing target.

[0062] When the outer sleeve 4 moves, it drives the sensor to move relative to the sensing target, so as to measure the displacement of the outer sleeve relative to the inner sleeve by the sensor, that is, to measure the relative displacement of the outer sleeve 4 of the pipe expansion joint relative to the upstream inner sleeve 1 and the downstream inner sleeve 6.

[0063] In some examples, the specific displacement calculation can be output by the signal processing device of the contact displacement sensor by calculating the displacement information. By the side of the metal sensing target being pressed by the sensor top rod, when the telescopic joint sleeve has displacement, the upstream sensor top rod and the downstream sensor top rod move, and then the signal processing device of the contact displacement sensor outputs the displacement information.

[0064] In the embodiments of the present application, the pipe telescopic joint comprises an outer sleeve and an inner sleeve, the outer sleeve is matched with the inner sleeve, the inner sleeve comprises an upstream inner sleeve and a downstream inner sleeve, and the outer sleeve is provided with the displacement monitoring structure relative to at least one of the upstream inner sleeve and the downstream inner sleeve; the displacement monitoring structure comprises a sensing target and a sensor; the sensing target is fixedly connected with the inner sleeve, and the sensor is fixedly connected with the outer sleeve; the sensor and the sensing target are oppositely arranged; when the outer sleeve moves, the sensor moves relative to the sensing target to measure the displacement of the outer sleeve relative to the inner sleeve through the sensor, so that the displacement deformation degree of the pipe telescopic joint is measured through the displacement monitoring structure, and the accuracy of the measurement data is improved.

[0065] Some embodiments of the present application also provide a pipe telescopic joint, which comprises the displacement monitoring structure as described above, and specifically as follows:

[0066] As Figure 2 , the outer sleeve 4 in the pipe telescopic joint is matched with the inner sleeve, the inner sleeve can comprise an upstream inner sleeve 1 and a downstream inner sleeve 6, one end of the outer sleeve 4 is matched with the upstream inner sleeve 1, and the other end of the outer sleeve 4 is matched with the upstream inner sleeve 1, so as to realize the function of the pipe telescopic joint.

[0067] In some examples, the outer sleeve 4 and the inner sleeve are further provided with a water seal compression ring 2, a corrugated pipe water seal 3 and a water seal material 5, and the outer sleeve 4 and the inner sleeve in the pipe telescopic joint are matched through the water seal compression ring 2, the corrugated pipe water seal 3 and the water seal material 5.

[0068] In actual application, in order to measure the displacement deformation degree of the pipe telescopic joint and improve the accuracy of the measurement data, the outer sleeve 4 is provided with the displacement monitoring structure relative to at least one of the upstream inner sleeve 1 and the downstream inner sleeve 6, which can comprise that the outer sleeve 4 is provided with the displacement monitoring structure relative to the upstream inner sleeve 1, or the outer sleeve 4 is provided with the displacement monitoring structure relative to the downstream inner sleeve 6, or the outer sleeve 4 is provided with the displacement monitoring structure relative to both the upstream inner sleeve 1 and the downstream inner sleeve 6.

[0069] In some embodiments of the present application, the outer sleeve 4 is provided with displacement monitoring structures relative to the upstream inner sleeve 1 and the downstream inner sleeve 6, and the sensors (i.e., upstream sensors 9) in the displacement monitoring structures provided on the outer sleeve 4 relative to the upstream inner sleeve 1 and the sensors (i.e., downstream sensors 12) in the displacement monitoring structures provided on the outer sleeve 4 relative to the downstream inner sleeve 6 are symmetrically arranged.

[0070] The displacement monitoring structure comprises an inductive target 7, such as an upstream inductive target and a downstream inductive target, which is fixedly connected to the inner sleeve, such as the upstream inductive target being fixedly connected to the upstream inner sleeve 1 and the downstream inductive target being fixedly connected to the downstream inner sleeve 6.

[0071] In some embodiments of the present application, the displacement monitoring structure can comprise a target support 8, one end of which is fixedly connected to the inner sleeve, and the other end of which is fixedly connected to the inductive target 7, that is, the inductive target 7 is fixed to the inner sleeve through the target support 8.

[0072] In some examples, the inductive target and the target support can be detachable, such as detachable connection by bolts or the like, of course, they can also be integrally formed.

[0073] In some embodiments of the present application, the target support 8 can be fixedly connected to the inner sleeve by gluing, such as fixing the target support to the inner sleeve by gluing and binding, which can avoid damage to the inner sleeve.

[0074] In some examples, the target support 8 can also be directly welded to the inner sleeve.

[0075] In some embodiments of the present application, the inductive target 7 comprises a support part and an inductive part, the support part is fixedly connected to the target support, and the inductive part abuts against the top rod of the sensor.

[0076] In some examples, the support part and the inductive part can constitute an L-shaped inductive target, such as the support part being perpendicular to the inner sleeve and the inductive part being parallel to the inner sleeve, on the one hand, the inductive target can be fixed to the inner sleeve through the support part, and on the other hand, displacement monitoring can be performed through cooperation of the inductive part and the sensor.

[0077] In some embodiments of the present application, the inductive target can be a metal inductive target, the inductive part can be made of metal material, and the support part can be made of other materials, or the support part and the inductive part can both be made of metal material, and the inductive part made of metal material can realize cooperation with the sensor.

[0078] In some examples, the metal material can be copper, iron, stainless steel, etc.

[0079] In some examples, the angle between the support part and the sensing part is adjustable, and the relative arrangement of the sensing part and the sensor can be facilitated by adjusting the angle between the support part and the sensing part.

[0080] The displacement monitoring structure further comprises sensors, such as the upstream sensor 9 and the downstream sensor 12, which are fixedly connected to the outer sleeve, such as the upstream sensor 9 being fixed to the outer sleeve near the upstream inner sleeve 1 and the downstream sensor 12 being fixed to the outer sleeve near the downstream inner sleeve 6.

[0081] In some examples, the sensor can be a displacement sensor, such as a contact displacement sensor, which can detect the movement of the position by cooperating with the sensing target and further generate measurement data.

[0082] In some embodiments of the present application, the outer sleeve 4 has an outer sleeve flange 11, and the sensor is fixedly connected to the outer sleeve flange through a sensor support.

[0083] As Figure 3 the outer sleeve flange has a ring body and a plurality of protruding parts, such as four protruding parts towards the top end, the bottom end, the right bank and the left bank, the plurality of protruding parts being connected to the ring body, and the sensor being fixedly connected to one of the protruding parts of the outer sleeve flange, such as Figure 3 the sensor support being fixedly connected to the protruding part towards the left bank, and the sensor being connected to the sensor support.

[0084] In some embodiments of the present application, the sensor comprises a plurality of sensors, the displacement data measured by a plurality of first sensors among the plurality of sensors being used to determine the displacement and inclination of the entire plane where the sensing target contacts the first sensors, and the displacement data measured by a second sensor among the plurality of sensors being combined with the displacement data measured by any other two first sensors for correction.

[0085] In embodiments of the present application, the displacement and inclination of the entire plane are measured by a plurality of first sensors, which improves the accuracy of measurement, and the second sensor is used for correction, which further improves the accuracy.

[0086] In some examples, the number of sensors is 4, the number of first sensors is 3, and the number of second sensors is 1.

[0087] The four sensors are evenly arranged, the displacement data measured by three of the four sensors can be used to determine the displacement and inclination of the entire plane, and the displacement data measured by the fourth sensor can be combined with the displacement data measured by any other two sensors for correction.

[0088] In some examples, the first sensor and the second sensor can be the same type of sensor, such as a contact displacement sensor, and then three contact displacement sensors can be selected to determine the displacement and inclination of the entire plane, and the displacement data measured by the fourth contact displacement sensor can be combined with the displacement data measured by any two other contact displacement sensors to perform correction.

[0089] In some examples, other types of third sensors can also be provided, such as a laser displacement sensor, and the final displacement data can be obtained according to the displacement data measured by the laser displacement sensor and the displacement data measured by the contact sensor, thereby improving the accuracy of displacement measurement.

[0090] In some embodiments of the present application, the sensor is connected to an amplifier, and the amplifier is used to amplify the signal collected by the sensor. The signal collected by the sensor is processed after being amplified by the amplifier, thereby enabling detection of subtle displacement and improving detection accuracy.

[0091] The sensor and the sensing target are arranged opposite to each other, such as the upstream sensor 9 and the upstream sensing target arranged opposite to each other, and the downstream sensor 12 and the downstream sensing target arranged opposite to each other. The opposite arrangement means that the sensor and the sensing target are in contact with each other, or the sensor and the sensing target are not in contact but at least partially relative.

[0092] In some embodiments of the present application, the sensor is provided with a top rod, and the top rod of the sensor abuts one side of the sensing target, such as the top rod of the upstream sensor 9 abutting the side of the upstream sensing target 7, and the top rod of the downstream sensor 12 abutting the side of the downstream sensing target.

[0093] When the outer sleeve 4 moves, the sensor moves relative to the sensing target to measure the displacement of the outer sleeve relative to the inner sleeve by the sensor, that is, to measure the relative displacement of the outer sleeve 4 of the pipe expansion joint relative to the upstream inner sleeve 1 and the downstream inner sleeve 6.

[0094] In some examples, a pressure sensor is installed on the inner wall of the pipe, and the pressure sensor can be used to observe the water pressure inside the pipe to prevent the pipe expansion joint from bearing a large water pressure.

[0095] In the embodiment of the present application, the pipe expansion joint comprises an outer sleeve and an inner sleeve, the inner sleeve comprises an upstream inner sleeve and a downstream inner sleeve, and the displacement monitoring structure is arranged on at least one of the outer sleeve, the upstream inner sleeve and the downstream inner sleeve; the displacement monitoring structure comprises a sensing target and a sensor; the sensing target is fixedly connected to the inner sleeve, and the sensor is fixedly connected to the outer sleeve; the sensor is arranged opposite to the sensing target; when the outer sleeve moves, the sensor moves relative to the sensing target, so that the displacement of the outer sleeve relative to the inner sleeve is measured by the sensor, the displacement deformation degree of the pipe expansion joint is measured by the displacement monitoring structure, and the accuracy of the measurement data is improved.

[0096] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of countries and regions, and provide corresponding operation portal for user to choose authorization or refusal.

[0097] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts of each embodiment can be referred to each other.

[0098] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, device or computer program product. Therefore, the embodiments of the present application can be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present application can be in the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

[0099] The embodiments of the present application are described with reference to flowcharts and / or block diagrams according to the method, terminal device (system) and computer program product of the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of the flows and / or blocks in the flowchart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing terminal device to produce a machine, so that the instructions executed by the computer or other programmable data processing terminal device produce a machine for realizing the functions described in the flowcharts and / or block diagrams. Figure 1 one flow or multiple flows and / or blocks Figure 1an apparatus for performing each function specified in a block or blocks.

[0100] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flow Figure 1 one or more flows and / or blocks Figure 1 an apparatus for performing each function specified in a block or blocks.

[0101] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flow Figure 1 one or more flows and / or blocks Figure 1 an apparatus for performing each function specified in a block or blocks.

[0102] While preferred embodiments of the application have been described, modifications and alterations thereto will occur to those skilled in the art upon reading the preceding description. It is intended to include all such modifications and alterations insofar as they come within the scope of the embodiments of the application. Accordingly, the following claims are intended to cover all such modifications and alterations.

[0103] Finally, it should be noted that the terms "first", "second", and the like, herein do not denote any order, quantity, combination, or importance, but rather are used to nomenclature different components of the application and to distinguish one component from another. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0104] The displacement monitoring structure of a pipe expansion joint and the pipe expansion joint are described in detail above, and the principles and implementation manners of the present application are described by using specific examples in the present application. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation manners and application ranges can be changed according to the idea of the present application. In conclusion, the content of the present description should not be understood as a limitation of the present application.

Claims

1. A displacement monitoring arrangement for a pipe expansion joint, characterised in that, The outer sleeve and the inner sleeve of the pipe expansion joint are connected, the inner sleeve includes an upstream inner sleeve and a downstream inner sleeve, and the outer sleeve is provided with the displacement monitoring structure relative to at least one of the upstream inner sleeve and the downstream inner sleeve; the displacement monitoring structure includes an induction target and a sensor; The induction target is fixedly connected with the inner sleeve, and the sensor is fixedly connected with the outer sleeve; the sensor is arranged opposite to the induction target; When the outer sleeve moves, the sensor moves relative to the induction target to measure the displacement of the outer sleeve relative to the inner sleeve through the sensor; The sensor is provided with a top rod, and the top rod of the sensor abuts against one side of the induction target; The outer sleeve is provided with an outer sleeve flange, and the sensor is fixedly connected with the outer sleeve flange through a sensor support.

2. The displacement monitoring structure of claim 1, wherein, The sensor includes a plurality of sensors, and displacement data measured by a plurality of first sensors of the plurality of sensors is used to determine the displacement and inclination angle of the entire plane where the induction target contacts the first sensors.

3. The displacement monitoring structure of claim 2, wherein, The displacement data measured by a second sensor of the plurality of sensors is combined with the displacement data measured by any two first sensors to perform correction.

4. The displacement monitoring structure of claim 3, wherein, The number of the sensors is four, the number of the first sensors is three, and the number of the second sensor is one.

5. The displacement monitoring structure of claim 3, wherein, The sensor is a contact displacement sensor.

6. The displacement monitoring structure of claim 3, wherein, The sensor is connected with an amplifier, and the amplifier is used to amplify the signal collected by the sensor.

7. The displacement monitoring structure of claim 1, wherein, The outer sleeve flange has a ring body and a plurality of protruding portions, the plurality of protruding portions are connected with the ring body, and the sensor support is fixedly connected with one protruding portion of the outer sleeve flange.

8. The displacement monitoring structure of claim 7, wherein, The displacement monitoring structure includes a target support, one end of the target support is fixedly connected with the inner sleeve, and the induction target is fixedly connected with the other end of the target support.

9. The displacement monitoring structure of claim 8, wherein, The induction target includes a supporting portion and an induction portion, the supporting portion is fixedly connected with the target support, and the induction portion abuts against the top rod of the sensor.

10. The displacement monitoring structure of claim 9, wherein, The induction target is a metal induction target, the induction portion, or the supporting portion and the induction portion are made of metal material.

11. The displacement monitoring structure of claim 8, wherein, The target support is fixedly connected with the inner sleeve in a gluing manner.

12. The displacement monitoring structure of claim 8, wherein, The outer sleeve is provided with the displacement monitoring structure relative to the upstream inner sleeve and the downstream inner sleeve, and the sensors in the displacement monitoring structures arranged relative to the upstream inner sleeve and the downstream inner sleeve are symmetrically arranged.

13. A pipe expansion joint characterized by, The pipe expansion joint includes the displacement monitoring structure according to any one of claims 1 to 12.

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