Pipeline monitoring device and monitoring method

Abstract

The embodiment of the application discloses a pipeline monitoring device and a monitoring method, which comprise a pipe sleeve assembly, a probe and a vibration monitor, the pipe sleeve assembly is used for penetrating through the pipe wall of a pipeline to be measured so that one end of the pipe sleeve assembly is located inside the pipeline to be measured, the detection end of the probe is arranged in the pipe sleeve assembly, the vibration monitor is connected to the probe, the pipe sleeve assembly is usually installed on the upper part of an industrial steam horizontal pipeline, when the corrosion products in the pipeline caused by steam and high temperature and high pressure corrosion and the like impact the pipe sleeve assembly, the pipe sleeve assembly transmits the vibration to the probe fixed in the pipe sleeve assembly, the probe transmits the vibration to the vibration monitor, the vibration monitor records and uploads the data, the vibration size is related to the mass, quantity and speed of the particles, therefore, when the gas-solid two-phase vibration monitoring of the pipeline to be measured is needed, the data in the vibration monitor can be exported, and the concentration and / or mass distribution of the solid particles in the gas-solid two-phase flow in the pipeline to be measured are determined according to the vibration record data.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of gas-solid two-phase flow monitoring, and in particular to a pipeline monitoring device and a monitoring method. BACKGROUND

[0002] Industrial steam pipelines are inevitably subjected to high-temperature corrosion on the inner wall of the pipeline, and the thermal expansion and contraction phenomenon occurs with the change of the internal medium temperature during operation, which causes stress on the pipeline and the shedding of high-temperature corrosion products, and in severe cases, causes blockage and even pipe explosion. Monitoring the solid particles in the gas-solid two-phase flow in the industrial steam pipeline is important for understanding the state of the shedding of high-temperature corrosion products and preventing or treating high-temperature corrosion products.

[0003] However, the conventional detection method for monitoring the solid particles in the gas-solid two-phase flow during the flow process is sampling detection, but the sampling of the gas-solid two-phase flow needs to be reduced in temperature and pressure due to the influence of high temperature and high pressure, which inevitably causes the interception of solid particles, and the sampling result is inaccurate due to the influence of the concentration change of the solid particles in the gas-solid two-phase flow at different sampling positions, so that the traditional measurement result can only be qualitative, and in addition, there are problems such as long sampling pipeline of the monitoring system and complex installation. SUMMARY

[0004] The present application aims to at least solve one of the problems in the prior art or related art.

[0005] To this end, a first aspect of the present application provides a pipeline monitoring device.

[0006] A second aspect of the present application provides a monitoring method.

[0007] Therefore, according to the first aspect of the embodiments of the present application, a pipeline monitoring device is provided, which comprises:

[0008] A sleeve assembly is used to pass through the pipe wall of the pipeline to be measured, so that one end of the sleeve assembly is located inside the pipeline to be measured;

[0009] A probe is provided with a detection end arranged in the sleeve assembly;

[0010] A vibration monitor is connected to the probe.

[0011] In a feasible implementation, the sleeve assembly comprises:

[0012] A sleeve is used to pass through the pipe wall of the pipeline to be measured;

[0013] A detection hole is arranged in the sleeve along the length direction of the sleeve;

[0014] The fixing member is arranged in the detection hole and is located at one end of the sleeve pipe extending into the pipeline to be detected, and the fixing member is connected with the probe.

[0015] In an embodiment, the fixing member is threadedly connected to the sleeve pipe through the detection hole.

[0016] In an embodiment, the pipeline monitoring device further comprises:

[0017] The base is arranged at one end of the probe away from the fixing member, and the base is connected with the vibration monitor.

[0018] In an embodiment, the fixing member is provided with an unlocking hole on the side close to the outside of the pipeline to be detected.

[0019] In an embodiment, the vibration monitor is detachably connected with the base.

[0020] In an embodiment, the outer wall of the one end of the sleeve pipe assembly extending into the pipeline to be detected is provided with a vibration reed.

[0021] In an embodiment, the pipeline monitoring device further comprises:

[0022] The alarm device is electrically connected with the vibration monitor.

[0023] According to a second aspect of the embodiments of the present application, a monitoring method is provided, which is applied to the pipeline monitoring device of any of the above technical solutions, and the monitoring method comprises:

[0024] The pipeline monitoring device is arranged on the pipeline to be detected.

[0025] The vibration image conducted by the vibration monitor is received.

[0026] Based on the vibration image, the concentration of the solid particles in the gas-solid two-phase flow in the pipeline to be detected and / or the distribution of the mass of the solid particles are determined.

[0027] In an embodiment, the monitoring method further comprises:

[0028] The alarm device acquires the vibration image conducted by the vibration monitor.

[0029] In the case that the vibration amplitude is greater than a preset value, alarm information is generated.

[0030] Compared with the prior art, the present application has at least the following beneficial effects:

[0031] The pipeline monitoring device provided by the embodiment of the application comprises a sleeve assembly, a probe and a vibration monitor. The sleeve assembly is used to pass through the pipe wall of a pipeline to be measured, so that one end of the sleeve assembly is located inside the pipeline to be measured. The probe is arranged in the sleeve assembly. The vibration monitor is connected to the probe. The sleeve assembly is usually installed on the upper part of an industrial steam horizontal pipeline. When the corrosion products in the pipeline caused by steam and high temperature and high pressure corrosion impact the sleeve assembly, the sleeve assembly transmits the vibration to the probe fixed therein. The probe transmits the vibration to the vibration monitor. The vibration monitor records and uploads the data. The vibration size is related to the mass, quantity and speed of particles. Therefore, when the gas-solid two-phase vibration of the pipeline to be measured needs to be monitored, the data in the vibration monitor can be exported. The concentration and / or mass distribution of solid particles in the gas-solid two-phase flow in the pipeline to be measured are determined according to the vibration record data. The embodiment of the application has the advantages of simple structure and convenient installation. The sleeve assembly is directly fixed on the pipe wall of the industrial steam pipeline. The pipeline monitoring device can monitor the solid concentration and / or speed in the internal gas-solid two-phase flow of the steam pipeline without reducing the temperature and pressure of the steam pipeline. Compared with the online sampling method which needs to reduce the temperature and pressure of the steam pipeline, the embodiment of the application avoids intercepting the solid particles in the two-phase flow when the temperature and pressure of the steam pipeline are reduced, so that the determination of the fixed particles in the pipeline to be measured is more accurate, which is changed from qualitative to quantitative. The performance of the device is improved. At the same time, when compared with the monitoring method using a wedge-shaped probe which needs to temporarily open a hole in the steam pipeline, the operation of the embodiment of the application is simpler and faster. BRIEF DESCRIPTION OF DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the application. Moreover, the same reference numerals in different figures represent the same or similar components. In the drawings:

[0033] Figure 1 A schematic diagram of the sectional structure of the embodiment provided by the application;

[0034] Figure 2 A schematic diagram of the structure of the embodiment provided by the application installed on the pipeline to be measured;

[0035] Figure 3 A schematic step flow chart of the monitoring method of another embodiment provided by the application;

[0036] Figure 4 A schematic step flow chart of the monitoring method of another embodiment provided by the application;

[0037] Among them, Figure 1 and Figure 2The correspondence between reference signs and component names is as follows:

[0038] 1 sleeve, 2 fixing, 3 probe, 4 base, 5 vibration monitor, 6 detection hole. DETAILED DESCRIPTION

[0039] In order to better understand the above technical solutions, the technical solutions of the embodiments of the present application will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the specific embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, rather than limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the specific embodiments can be combined with each other.

[0040] As shown in Figure 1 and Figure 2 According to the first aspect of the embodiments of the present application, a pipeline monitoring device is provided, which comprises: a sleeve assembly, the sleeve assembly is used to pass through the pipe wall of the pipeline to be measured, so that one end of the sleeve assembly is located inside the pipeline to be measured; a probe 3, the detection end of the probe 3 is arranged in the sleeve assembly; a vibration monitor 5, the vibration monitor 5 is connected to the probe 3.

[0041] The hoisting device for heat treatment provided by the embodiments of the present application comprises a sleeve assembly, a probe 3 and a vibration monitor 5. The sleeve assembly is used to pass through the pipe wall of the pipeline to be measured, so that one end of the sleeve assembly is located inside the pipeline to be measured. The detection end of the probe 3 is arranged in the sleeve assembly. The vibration monitor 5 is connected to the probe 3. The sleeve assembly is usually installed on the upper part of the industrial steam horizontal pipeline. When the corrosion products in the pipeline caused by steam and high temperature and high pressure corrosion impact the sleeve assembly, the sleeve assembly will transmit the vibration to the probe 3 fixed in it. The probe 3 transmits the vibration to the vibration monitor 5. The data is recorded and uploaded by the vibration monitor 5. Because the size of the vibration is related to the mass, number and speed of the particles, when the gas-solid two-phase vibration monitoring of the pipeline to be measured is needed, the data in the vibration monitor 5 can be exported. The concentration and / or mass distribution of the solid particles in the gas-solid two-phase flow inside the pipeline to be measured can be determined according to the vibration recording data. The structure of the embodiments of the present application is simple and convenient to install. The sleeve assembly is directly fixed on the pipe wall of the industrial steam pipeline. The pipeline monitoring device does not need to reduce the temperature and pressure of the steam pipeline, so that the solid concentration and / or speed in the internal gas-solid two-phase flow of the steam pipeline can be monitored. Compared with the online sampling method which needs to reduce the temperature and pressure of the steam pipeline, the embodiments of the present application avoid intercepting the solid particles in the two-phase flow when the temperature and pressure of the steam pipeline are reduced, so that the determination of the fixed particles inside the pipeline to be measured is more accurate. The qualitative change is changed to quantitative change. The performance of the device is improved in quality. At the same time, when compared with the monitoring method using the wedge-shaped probe which needs to temporarily open the hole in the steam pipeline, the operation of the embodiments of the present application is more simple and fast.

[0042] As shown in Figure 1 and Figure 2 in some examples, the sleeve assembly comprises: a sleeve 1 for penetrating the pipe wall of the pipe to be tested; a detection hole 6 arranged in the sleeve 1 along the length direction of the sleeve 1; a fixing part 2 arranged in the detection hole 6 at the end of the sleeve 1 extending into the pipe to be tested, and the fixing part 2 is connected with the probe 3.

[0043] In the technical scheme, the sleeve 1 is usually wedge-shaped, and is fixed on the pipe wall of the pipe to be tested as the shell of the whole device. The fixing part 2 is arranged in the detection hole 6 and connects the sleeve 1 with the probe 3. The rest of the probe 3 is suspended in the detection hole 6. The arrangement of the fixing part 2 and the detection hole 6 allows the probe 3 to be connected with the sleeve 1, which can transmit the vibration of the sleeve 1, and also leaves enough space for the vibration of the probe 3, which can fully transmit the vibration.

[0044] As shown in Figure 1 and Figure 2 in some examples, the fixing part 2 is threadedly connected with the sleeve 1 through the detection hole 6.

[0045] In the technical scheme, the sleeve 1 is fixedly connected with the pipe to be tested, and it is difficult to move and maintain. The detachable connection between the sleeve 1 and the fixing part 2 is achieved by using the threaded connection. Once the fixing part 2 and the probe 3 have problems in use, the fixing part 2 can be screwed out of the sleeve 1, which is convenient for maintaining or replacing the fixing part 2 and the probe 3. Because the structure of the probe 3 is relatively fragile, this detachable connection can effectively improve the service life of the application embodiment.

[0046] As shown in Figure 1 and Figure 2 in some examples, the pipe monitoring device further comprises: a base 4 arranged at the end of the probe 3 away from the fixing part 2, and the base 4 is connected with the vibration monitor 5.

[0047] In the technical scheme, because the overall structure of the probe 3 is relatively slender, it is difficult to directly fix the vibration monitor 5 on the probe 3. Therefore, the base 4 is added to connect the probe 3 with the vibration monitor 5, which increases the stability of the overall structure of the vibration detection device.

[0048] As shown in Figure 1 and Figure 2 in some examples, the fixing part 2 is provided with an unlocking hole on the side close to the outside of the pipe to be tested.

[0049] In the technical scheme, the fixing member 2 is deep into the detection hole 6, and the operator is not convenient to directly rotate the fixing member 2 when replacing. The probe 3 is relatively slender, and if the probe 3 is twisted to be fixed, the probe 3 is easily damaged, and the loss rate of the device is increased. Therefore, the unlocking hole is additionally arranged on the fixing member 2, and when the fixing member 2 needs to be rotated out or rotated in, the fixing member 2 can be directly operated by using a corresponding tool.

[0050] It can be understood that the unlocking hole can be a regular hexagon, a regular triangle or the like, and the specific shape of the unlocking hole is not limited in the application file.

[0051] As shown in Figure 1 and Figure 2 , in some examples, the vibration monitor 5 is detachably connected with the base.

[0052] In the technical scheme, the vibration monitor 5 is detachably connected with the base 4, so that when the probe 3 or the vibration monitor 5 is damaged, only the damaged part needs to be replaced without the whole replacement, the loss of the application embodiment in the specific use process is reduced, and the production cost is saved.

[0053] It can be understood that the connection mode between the vibration monitor 5 and the base 4 can be a buckle connection or a bolt connection, and the specific connection mode of the vibration monitor 5 and the base 4 is not limited in the application file.

[0054] As shown in Figure 1 and Figure 2 , in some examples, the outer wall of the pipe sleeve assembly extending into the inside of the pipe to be detected is provided with a vibration reed.

[0055] In the technical scheme, the vibration reed is additionally arranged on the outer wall of the pipe sleeve assembly. The solid particles in the gas-solid two-phase flow in the steam pipeline can be small particles. The vibration caused by the impact of the small particles on the pipe sleeve assembly does not reach the threshold value of the vibration monitor 5 due to the speed and mass, and the like, and thus the detection is missed. Therefore, the reed is additionally arranged to expand the vibration monitoring range, improve the sensitivity of the device, and improve the accuracy of the monitoring data.

[0056] As shown in Figure 1 and Figure 2 , in some examples, the pipeline monitoring device further comprises an alarm device, and the alarm device is electrically connected with the vibration monitor.

[0057] In the technical scheme, the vibration monitoring device is additionally provided with an alarm device. Since the data uploaded by the vibration monitor 5 needs to be read by the staff regularly, and the corrosion condition inside the steam pipeline is determined according to the data, and the use state of the steam pipeline is understood, the response process has a certain delay. If the steam pipeline inside appears a sharp deterioration condition, the staff is difficult to find it in time. Therefore, the alarm device is additionally provided, a threshold value is preset for the alarm device, and the data of the vibration monitor 5 is transmitted to the alarm device in real time. Once the vibration amplitude of the steam pipeline is greater than the preset value, the alarm device directly issues an alarm to remind the staff to check and maintain the steam pipeline.

[0058] As shown in Figure 3 According to the second aspect of the embodiment of the application, a monitoring method is provided. The method is applied to the pipeline monitoring device of any of the above technical schemes. The vibration monitoring method comprises the following steps.

[0059] Step 101: The pipeline monitoring device is arranged on the pipeline to be measured. The pipeline monitoring device is directly installed on the pipeline to be measured. On the one hand, the operator does not need to perform the operation of reducing the temperature and pressure of the vibrating steam pipeline during the monitoring, and the process of drilling holes in the steam pipeline wall and repairing the drilled holes is omitted, which greatly improves the monitoring efficiency of the steam pipeline. On the other hand, the application embodiment monitors the normal state of the steam pipeline during operation, and the monitoring result is more accurate.

[0060] Step 102: The vibration image conducted by the vibration monitor is received.

[0061] Step 103: Based on the vibration image, the concentration of the solid particles in the gas-solid two-phase flow inside the pipeline to be measured and / or the distribution of the mass of the solid particles are determined.

[0062] In the technical scheme, the technician can regularly check the vibration image conducted by the vibration monitor, determine the corrosion condition and corrosion trend inside the steam pipeline through the vibration image, and record them to determine whether the steam pipeline needs to be maintained or other corresponding processing measures are needed.

[0063] As shown in Figure 4 In some examples, the monitoring method further comprises the following steps.

[0064] Step 201: The alarm device acquires the vibration image conducted by the vibration monitoring device.

[0065] Step 202: In the case where the vibration amplitude is greater than the preset value, alarm information is generated.

[0066] Because the vibration monitor can only monitor the vibration condition, the specific judgment procedure needs to be executed by the technical personnel, and there is a certain response time in between, which cannot deal with the emergency situation, therefore, the monitoring method also includes the alarm process of the alarm device, the alarm device monitors the data transmitted by the vibration monitor in real time, can alarm in the first time when the emergency situation occurs, and improves the safety of the application.

[0067] In the present application, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, "connecting" can be fixed connection, or detachable connection, or integral connection; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0069] In the description of the present application, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pipeline monitoring device, characterized in that, The application relates to a pipeline monitoring device and a pipeline monitoring method. The pipeline monitoring device comprises a sleeve assembly, a probe and a vibration monitor. The sleeve assembly is used to pass through the wall of a pipeline to be monitored so that one end of the sleeve assembly is located inside the pipeline to be monitored. The probe is provided with a detection end in the sleeve assembly. The vibration monitor is connected to the probe. The sleeve assembly comprises a sleeve, a detection hole and a fixing member. The sleeve is used to pass through the wall of a pipeline to be monitored. The detection hole is arranged in the sleeve along the length direction of the sleeve. The fixing member is arranged in the detection hole and located at the end of the sleeve extending into the pipeline to be monitored. The probe is suspended in the detection hole except the part connected to the fixing member. The outer wall of the end of the sleeve assembly extending into the pipeline to be monitored is provided with a vibration reed.

2. The pipeline monitoring device according to claim 1, wherein the fixing member is threadedly connected to the sleeve through the detection hole.

3. The pipe monitoring apparatus of claim 1, wherein, The base is arranged at the end of the probe away from the fixing member, and the base is connected to the vibration monitor.

4. The pipeline monitoring device according to claim 1, wherein the fixing member is provided with an unlocking hole on the side close to the outside of the pipeline to be monitored.

5. The pipeline monitoring device according to any one of claim 3, wherein the vibration monitor is detachably connected to the base. The alarm device is electrically connected to the vibration monitor. The pipeline monitoring method comprises the following steps. The pipeline monitoring device is arranged on the pipeline to be monitored.

6. The pipe monitoring apparatus of any one of claims 1 to 4, wherein, The vibration image conducted by the vibration monitor is received. The concentration of solid particles and / or the distribution of solid particle mass in the gas-solid two-phase flow in the pipeline to be monitored are determined based on the vibration image.

7. A monitoring method applied to the pipe monitoring device according to any one of claims 1 to 6, characterized in that, The pipeline monitoring method further comprises the following steps. The alarm device acquires the vibration image conducted by the vibration monitor. When the vibration amplitude is greater than a preset value, alarm information is generated. ​ 8. The monitoring method according to claim 7, characterized in that, ​ ​ ​

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