A steam leakage monitoring device for thermal pipelines in port areas

Abstract

The utility model discloses a steam leakage monitoring device for a thermal pipeline in a port area, comprising a base and a detection ring, wherein the base is sleeved outside the pipeline and one side of the base is provided with an embedding groove; the detection ring can be detachably installed in the embedding groove, the detection ring is sleeved on the pipeline, and a temperature detection module is provided on the outer side thereof; an array of roller assemblies is evenly embedded in an annular manner on the inner ring surface of the detection ring, a rolling angle is provided between the roller center of the roller assembly and the central axis of the pipeline, so as to roll forward on the outer wall of the pipeline in a spiral shape; the monitoring device adds local precise detection on the basis of the existing pressure gradient method detection method, and further improves the detection accuracy; when the detection ring rotates around the thermal pipeline, a linear forward motion is generated along the thermal pipeline, so that the overall circumference of the thermal pipeline section in the precision inspection area is accurately detected in all directions.

Description

Technical Field

[0001] The utility model relates to the field of pipeline detection equipment, in particular to a steam leakage monitoring device for a thermal pipeline in a port area. Background Art

[0002] Thermal pipelines are the lifeline of the port area. Once damaged, they will have a serious impact on heating and heat production, resulting in direct economic losses and adverse social impacts. Pipeline leaks, especially minor leaks, are discovered in a timely manner, and scientific prediction information is provided for timely repair and maintenance of pipelines to prevent major leaks;

[0003] The existing technology uses the pressure gradient detection method for monitoring. Pressure sensors are placed at both ends of the pipeline to be tested. When the pipeline leaks, the pressure gradient at the inlet and outlet is no longer consistent, the flow rate upstream of the leak point increases, the slope increases, and the flow rate downstream decreases, and the slope decreases. The gradient change is no longer a straight line, but a broken line formed by two straight lines, and the turning point is the leak point. However, this method can only roughly lock the leak area and is only applicable to isothermal pipelines or pipelines whose medium properties change very little with temperature. If the thermal pipeline encounters extreme weather, the positioning accuracy of this method will be reduced, and it needs to be combined with external scanning to accurately locate the leak point.

[0004] According to the pressure gradient detection method, the locked leakage area is further accurately scanned and located. Currently, the leakage point is locked through manual on-site observation. Due to the difficulty in observing the laying position of the thermal pipeline in the port area and the safety hazard of leaking high-temperature water vapor, it is necessary to design corresponding scanning and detection equipment along the pipeline for auxiliary positioning. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a steam leakage monitoring device for thermal pipelines in a port area to solve one or more problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A steam leakage monitoring device for a thermal pipeline in a port area comprises a base and a detection ring. The base is sleeved outside the pipeline and is provided with an embedding groove on one side. The detection ring is detachably installed in the embedding groove. The detection ring is sleeved on the pipeline and a temperature detection module is provided on the outer side thereof. An array of roller assemblies are evenly embedded in an annular manner on the inner ring surface of the detection ring, and the detection ring is used to roll along the outer wall of the pipeline. A rolling angle is formed between the center of the roller shaft of the roller assembly and the central axis of the pipeline, and the detection ring rolls forward in a spiral trajectory on the outer wall of the pipeline.

[0008] Furthermore, the base is divided along a radial surface to form two half-ring seats, and the other side of the half-ring seat is provided with a first connecting flange respectively located at the two ends, and the two half-ring seats are connected in series with the corresponding first connecting flanges through a connecting piece to form a base of an annular structure that can be detachably mounted outside the pipeline; the detection ring is divided along a radial surface to form two ring bodies, and the outer side surface of the ring body is provided with a second connecting flange respectively located at the two ends, and the two ring bodies are connected in series with the corresponding second connecting flanges through a connecting piece to form a detection ring that can be detachably mounted outside the pipeline.

[0009] Furthermore, a plurality of mounting grooves are vertically opened on the inner ring surface of the detection ring, and the roller assembly includes a roller body and two mounting plates, the two mounting plates are obliquely fixed in the mounting grooves, and both ends of the roller shaft of the roller body can be rotatably mounted on two parallel mounting plates.

[0010] Furthermore, a collector cover is integrally formed on one side of the base, and a trumpet-shaped steam collecting channel is provided in the collector cover. The steam collecting channel is connected to the embedding groove and is used to collect the leaked steam onto the detection ring in the embedding groove.

[0011] Furthermore, the temperature detection module includes a power supply, a controller, a temperature sensor and an alarm. The power supply and the controller are embedded in the ring body, and the temperature sensor and the alarm are arranged on the outer surface of the detection ring and are electrically connected to the power supply and the controller respectively.

[0012] Furthermore, the detection ring is magnetically connected to the base, a magnet is arranged at the bottom of the embedding groove, the ring body is made of ferromagnetic material, and the roller assembly is made of stainless steel.

[0013] Compared with the prior art, the steam leakage monitoring device for thermal pipelines in a port area of ​​the utility model has the following beneficial effects:

[0014] Based on the existing pressure gradient detection method, this monitoring equipment adds local precision detection to further improve the detection accuracy. Because the roller assembly of the detection ring is set with a rolling angle, the rolling trajectory of the rolling assembly along the outer wall of the pipeline is a spiral trajectory. When the detection ring rotates around the thermal pipeline, it produces a linear forward motion along the thermal pipeline, and performs all-round and precise detection on the overall circumference of the thermal pipeline section in the precision inspection area, so as to accurately lock the leakage point in a very small pipe section; after being equipped with an automatic drive source, the monitoring equipment can also be used as an inspection equipment for dangerous pipe sections or high-fault pipe sections, so as to conduct regular automatic scanning and inspection to ensure the reliability of pipeline steam transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the monitoring device of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0017] In the figure: 1. base; 11. first half ring seat; 111. first connecting flange; 12. second half ring seat; 13. collector; 14. mounting groove; 15. magnet; 2. detection ring; 21. first ring body; 211. mounting groove; 212. second connecting flange; 22. second ring body; 23. roller assembly; 231. roller body; 232. mounting plate; 24. temperature sensor; 25. alarm; 3. pipeline. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only the best embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] A steam leakage monitoring device for thermal pipelines in a port area can be used to scan the thermal pipelines 3 in a specified area in combination with the pressure gradient detection method as a local accurate auxiliary detection method. It can also be configured on the thermal pipelines 3 in high-fault areas as a regular automatic scanning and inspection device, such as Figure 1-Figure 2 As shown, the monitoring device includes a base 1 and a detection ring 2. The base 1 serves as a protective shell of the detection ring 2. At the same time, the base 1 can be connected to an external driving source to provide power for traveling along the pipe, or the base 1 can be driven manually to walk. In order to reduce friction, the base 1 is detachably sleeved outside the pipe 3. The base 1 is formed by the first half ring seat 11 and the second half ring seat 12 being connected together so as to be quickly disassembled and installed on the pipe 3 to be inspected. Figure 1 The base 1 is divided along the radial surface to form a first half ring seat 11 and a second half ring seat 12 with symmetrical structures. Both ends of the first half ring seat 11 and the second half ring seat 12 extend outward along the radial surface to the other side surface to form a first connecting flange 111 for installing a connecting piece. The first half ring seat 11 and the second half ring seat 12 are combined and sleeved outside the pipeline 3. The first connecting flanges 111 at the corresponding ends overlap each other and are connected in series through connecting pieces such as bolts; an embedding groove 14 is provided on the side of the base 1 facing the pipeline 3 to be inspected, which is used to embed the protective detection ring 2 and block the high-intensity pressure steam jet at the leakage point to ensure the safety of the inspection personnel;

[0020] The detection ring 2 serves as a support and steam temperature precision inspection unit for moving along the pipe. It can be quickly disassembled and installed in the embedding groove 14 through magnetic connection. A plurality of annular or horseshoe-shaped magnets 15 are spliced ​​and glued at the bottom of the embedding groove 14. The magnet 15 can strengthen the connection between the first half ring seat 11 and the second half ring seat 12. At the same time, the ring body of the detection ring 2 should be made of ferromagnetic materials, such as iron, steel and the like. The roller assembly 23 is made of stainless steel that is not affected by magnetism so that it can roll along the pipe. Since the base 1 and the pipeline 3 are gap-connected, magnetism does not affect the overall movement of the monitoring equipment along the pipe. The detection ring 2 can be slidably mounted on the pipeline 3. Similarly, in order to quickly disassemble and install the detection ring 2, the detection ring 2 is divided along the radial surface to form a first ring body 21 and a second ring body 22 with symmetrical structures. Both ends of the first ring body 21 and the second ring body 22 extend outward along the radial surface to form a second connecting flange 212. The first ring body 21 and the second ring body 22 are connected to each other along the radial surface. 22 is fitted onto the outside of the pipeline 3, and the second connecting flanges 212 at the corresponding ends thereof overlap each other and are connected in series through connecting members such as bolts; a temperature detection module is arranged on the outer side surface of the detection ring 2, and an array of roller assemblies 23 are evenly embedded in an annular manner on the inner ring surface of the detection ring 2. In order to realize the movement along the pipeline 3 and the full circumference inspection at the same time, the movement of the detection ring 2 should be a combination of linear movement along the pipe and rolling around the pipe. Therefore, there is a rolling angle between the roller center of the roller assembly 23 and the central axis of the pipeline 3. The detection track of the temperature detection module on the detection ring 2 along the outer wall of the pipeline 3 is a spiral track line. The size of the rolling angle is designed according to the maximum precision inspection area of ​​the temperature detection module, so that the maximum detection domain centered on the spiral track line covers the entire outer wall circumference of the pipeline 3. The maximum precision inspection area is comprehensively considered based on the sensitivity, accuracy, target temperature setting and extreme ambient temperature influence of the temperature detection module.

[0021] The specific implementation method of the inclined installation of the roller assembly 23 is as follows Figure 2 As shown, in order to embed the roller assembly 23, a plurality of mounting grooves 211 are vertically opened on the inner ring surface of the detection ring 2. The mounting grooves 211 axially penetrate the two ends of the detection ring and are evenly distributed on the inner ring surface. The roller assembly 23 includes a roller body 231 and two mounting plates 232. The two mounting plates 232 serve as supports for the two roller ends of the roller body 231 and are arranged at intervals. In order to form a rolling angle of the roller body 231, the two mounting plates 232 are fixed in the mounting groove 211 at an angle relative to the width direction of the mounting groove 211.

[0022] As a further technical solution, firstly, considering that in case of a large leakage, high-temperature and high-pressure steam forms a high-temperature environment in a large range, which will affect the operational safety of the detection personnel; secondly, when the leakage point is too small, harsh environments such as strong winds and low temperatures will reduce the scanning accuracy of the leaking steam; therefore, a collector 13 is also integrally formed on one side of the first half ring seat 11 and the second half ring seat 12. The collector 13 can increase the steam blocking area, and a trumpet-shaped steam collection channel is provided in the collector 13. The small end of the steam collection channel is connected to the notch of the embedding groove 14. The collector 13 blocks the harsh environment and can accumulate and gather the leaking steam on the detection ring 2 at the small end of the steam collection channel, thereby improving the detectability of the detection ring 2 in harsh environments.

[0023] As a further technical solution, a temperature detection module is installed on the first ring body 21, which includes a power supply, a controller, a temperature sensor 24 and an alarm 25, wherein the power supply and the controller are encapsulated in the first ring body 21, and the first ring body 21 is provided with mounting holes for the temperature sensor 24 and the alarm 25 so that the temperature sensor 24 and the alarm 25 can be placed on the outer surface of the detection ring 2. The controller is connected to the power supply and can set the alarm temperature. The alarm 25 can be a miniature sound and light alarm 25. The temperature sensor 24 feeds back the temperature signal to the controller, and the controller analyzes the signal and activates the miniature sound and light alarm 25 for leakage notification.

[0024] The directional words "up", "down", "outside", "side" and so on mentioned in this article are described based on Figure 1-Figure 2 These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation;

[0025] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steam leakage monitoring device for thermal pipelines in port areas, characterized in that: include: The base and the detection ring are provided, wherein the base is sleeved outside the pipeline and one side of the base is provided with an embedding groove; the detection ring is detachably installed in the embedding groove, the detection ring is sleeved on the pipeline, and a temperature detection module is provided on the outer side thereof; an array of roller assemblies are evenly embedded in an annular shape on the inner ring surface of the detection ring, and are used for the detection ring to roll along the outer wall of the pipeline; a rolling angle is provided between the roller center of the roller assembly and the central axis of the pipeline, so that the detection ring rolls forward in a spiral trajectory on the outer wall of the pipeline.

2. The steam leakage monitoring equipment for thermal pipelines in port areas according to claim 1 is characterized by: The base is divided along a radial surface to form two half-ring seats, and the other side of the half-ring seat is provided with a first connecting flange located at both ends respectively, and the two half-ring seats are connected in series with the corresponding first connecting flanges through a connecting piece to form the base of an annular structure that can be detachably mounted outside the pipeline; the detection ring is divided along a radial surface to form two ring bodies, and the outer side surface of the ring body is provided with a second connecting flange located at both ends respectively, and the two ring bodies are connected in series with the corresponding second connecting flanges through a connecting piece to form the detection ring that can be detachably mounted outside the pipeline.

3. The steam leakage monitoring equipment for thermal pipelines in port areas according to claim 1 is characterized by: A plurality of mounting grooves are vertically opened on the inner ring surface of the detection ring. The roller assembly includes a roller body and two mounting plates. The two mounting plates are obliquely fixed in the mounting grooves. Both ends of the roller shaft of the roller body can be rotatably mounted on the two parallel mounting plates.

4. The steam leakage monitoring equipment for thermal pipelines in port areas according to claim 2 is characterized by: A collector cover is also integrally formed on one side of the base, and a trumpet-shaped steam collecting channel is provided in the collector cover. The steam collecting channel is connected to the embedding groove and is used to collect the leaked steam onto the detection ring in the embedding groove.

5. The steam leakage monitoring equipment for thermal pipelines in port areas according to claim 2 is characterized by: The temperature detection module includes a power supply, a controller, a temperature sensor and an alarm. The power supply and the controller are embedded in the ring body, and the temperature sensor and the alarm are arranged on the outer surface of the detection ring and are electrically connected to the power supply and the controller respectively.

6. The steam leakage monitoring equipment for thermal pipelines in port areas according to claim 2 is characterized by: The detection ring is magnetically connected to the base, a magnet is arranged at the bottom of the embedding groove, the ring body is made of ferromagnetic material, and the roller assembly is made of stainless steel.

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