A protection system for high temperature steam system piping

Abstract

A protection system for high-temperature steam system pipelines, comprising: a steam leakage detection device comprising a plurality of detection points arranged at respective risk positions of the high-temperature steam system pipelines for alarming steam leakage generated at the risk positions; a steam spraying device comprising a plurality of spraying modules corresponding to the respective detection points for forming a water curtain blocking steam diffusion around the risk positions by the spraying modules; and a processing computing device for controlling the spraying modules around the respective detection points to be opened or closed according to detection results of the respective detection points. The different risk positions of the high-temperature steam system pipelines are detected by the steam leakage detection device, so that the leakage position can be determined in time after steam leakage occurs, and the steam spraying device can automatically spray around the corresponding leakage position. The problem that it is difficult to determine the steam leakage position and range manually and the spraying range opened is inaccurate in the related art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of steam pipeline, in particular to a protection system for high-temperature steam system pipeline. BACKGROUND

[0002] Steam pipelines are widely used in fields such as shipbuilding and ocean engineering, energy and power industry. Due to the long-term temperature load of high temperature, the pressure load caused by high pressure, the scouring effect caused by high flow rate, and the corrosion effect during long-term use, the steam pipeline may be damaged, causing high-temperature steam leakage and overflow, affecting the safety and normal operation of the pipeline system, and even causing casualties and huge economic losses in severe cases. According to statistics, in recent years, there have been many high-temperature and high-pressure steam pipeline burst accidents in China's power industry. Therefore, it is of great significance to timely detect the leakage position after pipeline steam leakage and take measures to quickly handle high-temperature steam.

[0003] Steam leakage will quickly disperse in the room, and traditional steam leakage detection often has single function. After discovering the leakage, manual determination of the spraying range and spraying time is needed, which not only wastes valuable leakage accident rescue and escape time, but also may cause inaccurate spraying range, resulting in a wide steam leakage range. SUMMARY

[0004] The present application provides a protection system for high-temperature steam system pipeline, which can solve the technical problems of manual control of spraying not being timely and spraying range being inaccurate after steam leakage in the prior art.

[0005] The present application provides a protection system for high-temperature steam system pipeline, which adopts the following technical scheme:

[0006] A protection system for high-temperature steam system pipeline, comprising:

[0007] A steam leakage detection device comprising a plurality of detection points, the plurality of detection points are arranged at respective risk positions of the high-temperature steam system pipeline, for alarming steam leakage generated at the risk positions;

[0008] A steam spraying device comprising a plurality of groups of spraying modules correspondingly arranged around each detection point, for forming a water curtain blocking steam diffusion around the risk positions by the spraying modules;

[0009] A processing calculation device configured to control the corresponding spraying modules to be turned on or off according to the detection results of each detection point.

[0010] In an embodiment, the spraying module has a plurality of interval arranged spraying belts in the direction away from the detection point; and,

[0011] The processing computing device is configured to control the opening or closing of one or more spraying belts in the corresponding spraying module according to the detection results of the detection points.

[0012] In an embodiment, the detection points include a temperature sensor and an infrared thermal imaging detector; the temperature sensor is used to detect whether steam leakage occurs, and the infrared thermal imaging detector is used to acquire the real-time diffusion state of the leaked steam.

[0013] The processing computing device is configured to control the spraying of the spraying belt closest to the leaked steam to form a water curtain blocking the diffusion of the steam according to the detection results of the temperature sensor and the infrared thermal imaging detector.

[0014] In an embodiment, the processing computing device is further configured to:

[0015] According to the real-time diffusion state of the leaked steam acquired by the infrared thermal imaging detector, it is determined whether there is a spraying point closer to the leaked steam between the spraying point being sprayed and the detected leaked steam.

[0016] If there is, the spraying of the spraying point closer to the leaked steam is controlled.

[0017] In an embodiment, further comprising:

[0018] A valve linkage device is connected to each pipeline valve of the high-temperature steam system pipeline for controlling the opening and closing of each pipeline valve; and,

[0019] The processing computing device is further configured to control the opening and closing of the corresponding pipeline valve by the valve linkage device according to the detection results of each detection point.

[0020] In an embodiment, the processing computing device controls the opening and closing of the corresponding pipeline valve by the valve linkage device according to the detection results of each detection point,

[0021] The upstream and downstream closest pipeline valves of the detection point where the steam leakage is detected are closed.

[0022] In an embodiment, further comprising:

[0023] A steam extraction device is arranged on one side of each risk position; and,

[0024] The processing computing device is further configured to control the steam extraction device to extract the leaked steam inside the water curtain formed by the spraying point according to the detection results of each detection point.

[0025] In an embodiment, the steam extraction device comprises:

[0026] an air suction port arranged between each risk position and the spraying module around the risk position;

[0027] an air exhaust pipe arranged above the air suction port and in communication with the air suction port;

[0028] an air supply part for supplying a flow of air into the air exhaust pipe.

[0029] In an embodiment, the detection points include a temperature sensor, an infrared thermal imaging detector, and a flow detector; the temperature sensor is configured to detect whether the temperature of the detection point appears, the infrared thermal imaging detector is configured to obtain a real-time diffusion area of the leaked steam, and the flow detector is configured to detect a flow rate of the leaked steam.

[0030] The processing and computing device is configured to control the steam suction device to suction and exhaust the leaked steam inside the water curtain formed by the spraying points according to the suction rate corresponding to the real-time diffusion area, the flow rate, and the detection point of the leaked steam.

[0031] In an embodiment, the processing and computing device controls the steam suction device to suction and exhaust the leaked steam inside the water curtain formed by the spraying points according to the suction rate corresponding to the detection result of the infrared thermal imaging detector.

[0032] The suction rate is positively correlated with the diffusion volume, the flow rate, and the temperature of the leaked steam.

[0033] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0034] The steam leakage detection device detects different risk positions of the high-temperature steam system pipeline, and then determines the leakage position in time after the steam leakage occurs. Under the control of the processing and computing device, the steam spraying device sprays automatically around the corresponding leakage position to form a water curtain to block the diffusion of steam, without manually opening the spraying system or suctioning and exhausting the steam, thereby greatly saving the processing time and improving the risk disposal efficiency. The problems of difficulty in manually determining the steam leakage position and range and inaccuracy of the opened spraying range in the related art are solved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 FIG. 1 is a schematic diagram of a module of a protection system of a high-temperature steam system pipeline in an embodiment;

[0036] Figure 2 FIG. 2 is a schematic diagram of the structure distribution of a protection system of a high-temperature steam system pipeline around a risk position in an embodiment.

[0037] REFERENCE SIGNS:

[0038] 1, detection point; 2, spraying belt; 3, temperature sensor; 4, infrared thermal imaging detector; 5, air outlet. DETAILED DESCRIPTION

[0039] In order to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0040] The terms "comprise", "have" and "include" and any variations thereof in the specification and claims of the present application and the above-described accompanying drawings are intended to cover not exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to the process, method, product or device. The terms "first", "second" and "third" and the like descriptions are used to distinguish different objects, and do not represent the order or limit the types of "first", "second" and "third".

[0041] In the description of the embodiments of the present application, "exemplary", "for example" or "for instance" is used to represent as an example, illustration or description. Any embodiment or design scheme described as "exemplary", "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. In fact, the words "exemplary", "for example" or "for instance" are intended to present the relevant concept in a specific way.

[0042] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text only describes the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0043] Steam pipeline is widely used in the fields of ship and ocean engineering, energy and power industry, etc. Due to the high temperature load caused by long-term high temperature, the pressure load caused by high pressure, the scouring effect caused by high flow rate and the corrosion effect during long-term use, the steam pipeline may be damaged, causing high temperature steam leakage, affecting the safety and normal operation of the pipeline system, and even causing casualties and huge economic losses in serious cases. According to statistics, in recent years, there have been many high temperature and high pressure steam pipeline burst accidents in China's power industry. Therefore, it is of great significance to timely find the leakage position after steam leakage and take measures to quickly handle the high temperature steam.

[0044] Steam leakage will quickly disperse in the room, and traditional steam leakage detection is often single-functioned. After discovering the leakage, it is necessary to manually determine the spraying range and spraying time, which not only wastes valuable leakage accident rescue and escape time, but also may cause inaccurate spraying range, resulting in a wide steam leakage range.

[0045] Based on the above problems, the embodiment of the present application provides a protection system for high temperature steam system pipeline, the invention points of which are that the steam leakage detection device is used to detect different risk positions of the high temperature steam system pipeline, so as to timely determine the leakage position after steam leakage, and under the control of the processing calculation device, the steam spraying device forms a water curtain blocking steam diffusion around the corresponding leakage position, solving the problem of difficulty in manually determining the steam leakage position and range and inaccurate spraying range in the related art.

[0046] Reference Figure 1 The protection system for high temperature steam system pipeline provided by the embodiment of the present application comprises:

[0047] A steam leakage detection device comprising a plurality of detection points 1, the plurality of detection points 1 are arranged at each risk position of the high temperature steam system pipeline respectively, for alarming the steam leakage generated at the risk position;

[0048] A steam spraying device comprising a plurality of groups of spraying modules correspondingly arranged around each detection point 1, for forming a water curtain blocking steam diffusion around the risk position through the spraying module;

[0049] A processing calculation device configured to control the corresponding spraying module to be opened or closed according to the detection result of each detection point 1.

[0050] The risk positions of the high-temperature steam system pipeline are specifically dangerous sections of steam pipeline leakage, including but not limited to, for example, valves, welds, flanges, elbows, tees, etc. The detection result of each detection point 1 is specifically whether steam leakage occurs at the corresponding risk position. When steam leakage occurs, the corresponding spray module of the risk position is controlled to be opened to form a water curtain that blocks the diffusion of steam.

[0051] The spray module used is not specifically limited in the embodiments of the present application, but it should be a water curtain that can block the diffusion of steam, for example, a plurality of spaced-apart spray openings, the water curtains sprayed by the spray openings being in contact with each other to form a water curtain that can block the diffusion of steam to other areas. At the same time, the spray module to be arranged will also be determined according to the specific environment, for example, for a position where diffusion spaces exist around the risk position, the spray module can be arranged to surround the risk position on the side to form a circumferential surrounding water curtain. For a position where only one side of the risk position has a diffusion space, a spray module that can form a blocking water curtain can be arranged on the side of the diffusion space.

[0052] In this way, by detecting different risk positions of the high-temperature steam system pipeline through the steam leakage detection device, the leakage position can be determined in a timely manner when steam leakage occurs, and under the control of the processing calculation device, a water curtain that blocks the diffusion of steam is formed on the side of the corresponding leakage position through the steam spray device, thereby solving the problem of difficulty in determining the steam leakage position and range by humans and inaccurate spray range in the related art.

[0053] Reference Figure 2 Further, in a preferred embodiment, the spray module has a plurality of spaced-apart spray strips 2 in the direction away from the detection point 1; and,

[0054] The processing calculation device is configured to control one or more spray strips 2 in the corresponding spray module to be opened or closed according to the detection result of each detection point 1.

[0055] Specifically, each spray strip 2 arranged in the direction away from the detection point 1 can form a water curtain that blocks the diffusion of steam outward. Further, in different embodiments, when the detection result of the detection point 1 indicates that steam leakage occurs, the spray module corresponding to the detection point 1 can open one spray strip 2 or a plurality of spray strips 2 to block the steam. When a plurality of spray strips 2 are opened to block the steam, the blocking effect is better, which can effectively prevent the diffusion of steam. When a single spray strip 2 is opened to block the steam, the pressure of the water storage of the spray water is smaller, which is relatively more suitable for the case of smaller leakage.

[0056] Further, in a preferred embodiment, the detection point 1 comprises a temperature sensor 3 and an infrared thermal imaging detector 4; the temperature sensor 3 is used to detect whether steam leakage occurs, and the infrared thermal imaging detector 4 is used to obtain the real-time diffusion state of the leaked steam.

[0057] The processing computing device is configured to control the spraying of the spraying belt 2 closest to the leaked steam to form a water curtain to block the diffusion of the steam according to the detection results of the temperature sensor 3 and the infrared thermal imaging detector 4.

[0058] Specifically, the temperature sensor 3 is preferably a distributed optical fiber sensor in this embodiment, which can display the development trend and spreading direction of the leaked steam in real time, can be arranged according to the pipeline route, and can realize accurate positioning of the leakage position. The infrared thermal imaging detector 4 can realize real-time imaging of the on-site situation of the leaked steam and transmit it to the processing computing device to assist in evaluating the state of the leakage and provide support for the computer to issue processing instructions.

[0059] Further, in a preferred embodiment, the processing computing device is further configured to:

[0060] According to the real-time diffusion state of the leaked steam obtained by the infrared thermal imaging detector 4, it is determined whether there is a spraying point closer to the leaked steam between the spraying point being sprayed and the detected leaked steam;

[0061] If there is, control the spraying of the spraying point closer to the leaked steam.

[0062] In this way, when the leaked steam gradually dissipates and shrinks due to the water curtain or other external means, the processing computing device can timely discover it according to the infrared thermal imaging detector 4 and correspondingly adjust the spraying point, so as to further reduce the range of the water curtain blocking the leaked steam and further reduce the leakage range of the leaked steam.

[0063] Further, in a preferred embodiment, it further comprises:

[0064] A valve linkage device connected with each pipeline valve of the high-temperature steam system pipeline for controlling the opening and closing of each pipeline valve; and

[0065] The processing computing device is further configured to control the opening and closing of the corresponding pipeline valve through the valve linkage device according to the detection results of each detection point 1.

[0066] Further, in a preferred embodiment, the processing computing device controls the opening and closing of the corresponding pipeline valve through the valve linkage device according to the detection results of each detection point 1,

[0067] Close the nearest pipeline valve upstream and downstream of the detection point 1 where the steam leakage is detected.

[0068] In this way, the pipeline valves upstream and downstream of the leakage position can be closed in time after the steam leakage is found, thereby avoiding further steam leakage and facilitating subsequent control and treatment of the leaked steam.

[0069] Further, in a preferred embodiment, it further comprises:

[0070] A steam extraction device is arranged on one side of each risk position; and

[0071] The processing and computing device is further configured to control the steam extraction device to extract the leaked steam inside the water curtain formed by the spray point according to the detection results of each detection point 1.

[0072] In this way, the steam extraction device can be used to extract the leaked steam while the water curtain is used to block the leaked steam, thereby further accelerating the extraction of the steam and reducing the impact of the steam spreading in the room.

[0073] Further, in a preferred embodiment, the steam extraction device comprises:

[0074] An air extraction port 5 is arranged between each risk position and the spray module on the periphery thereof;

[0075] An air exhaust pipe is arranged above the air extraction port 5 and communicates with the air extraction port 5;

[0076] An air supply part is used to send a flowing air stream into the air exhaust pipe.

[0077] In this way, the air extraction port 5 is arranged between the spray module and the risk position, which ensures that the leaked steam blocked by the water curtain can be extracted when necessary, thereby effectively treating the leaked steam.

[0078] Further, in a preferred embodiment, the detection point 1 comprises a temperature sensor 3, a flow detection meter, and an infrared thermal image detector 4; the temperature sensor 3 is used to detect whether steam leakage occurs, the infrared thermal image detector 4 is used to obtain the real-time diffusion state of the leaked steam, and the flow detection meter is used to detect the flow rate of the leaked steam;

[0079] The processing and computing device is configured to control the steam extraction device to extract the leaked steam inside the water curtain formed by the spray point at a corresponding extraction rate according to the detection results of the temperature sensor 3, the infrared thermal image detector 4, and the flow detection meter.

[0080] In this way, when the leakage steam is extracted, the extraction rate can be adjusted according to the actual state of the leakage steam, and when the leakage scale is large, the extraction can be performed at a large rate, so that the leakage steam is not accumulated too much in the room.

[0081] Specifically, the processing and computing device controls the steam extraction device to extract the leakage steam inside the water curtain formed by the spray point at an extraction rate corresponding to the detection result of the detection point 1,

[0082] The extraction rate is positively correlated with the diffusion volume, flow rate and temperature of the leakage steam.

[0083] It should be noted that the above sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0084] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, and of course it can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions for making a terminal device execute the methods described in the embodiments of the present application.

[0085] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is based on the content of the specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A protection system for high temperature steam system piping, characterized by, It includes: A steam leakage detection device, which includes a plurality of detection points arranged at each risk position of the high-temperature steam system pipeline respectively, for alarming the steam leakage generated at the risk position; A steam spraying device, which includes a plurality of spraying modules arranged around each detection point respectively, for forming a water curtain blocking the diffusion of steam around the risk position through the spraying modules; A processing calculation device configured to control the spraying modules around each detection point to be opened or closed according to the detection results of each detection point; The spraying module has a plurality of spraying belts arranged at intervals in the direction away from the detection point; and The processing calculation device is configured to control one or more spraying belts in the corresponding spraying module to be opened or closed according to the detection results of each detection point; The detection point includes a temperature sensor for detecting whether steam leakage occurs and an infrared thermal imaging detector for acquiring the real-time diffusion state of the leakage steam; The processing calculation device is configured to control the spraying belt closest to the leakage steam to spray and form a water curtain blocking the diffusion of steam according to the detection results of the temperature sensor and the infrared thermal imaging detector; The processing calculation device is further configured to: Judge whether there is a spraying point closer to the leakage steam between the spraying point being sprayed and the detected leakage steam according to the real-time diffusion state of the leakage steam acquired by the infrared thermal imaging detector; If so, control the spraying point closer to the leakage steam to spray; Further including: A steam pumping device arranged on one side of each risk position; and The processing calculation device is further configured to control the steam pumping device to pump the leakage steam inside the water curtain formed by the spraying point according to the detection results of each detection point; The detection point includes a temperature sensor for detecting whether the temperature of the detection point occurs, an infrared thermal imaging detector for acquiring the real-time diffusion area of the leakage steam, and a flow detector for detecting the flow rate of the leakage steam; The processing calculation device is configured to control the steam pumping device to pump the leakage steam inside the water curtain formed by the spraying point at a pumping rate corresponding to the real-time diffusion area, flow rate, and temperature of the detection point of the leakage steam according to the detection results of the detection point; In the process in which the processing calculation device controls the steam pumping device to pump the leakage steam inside the water curtain formed by the spraying point at a pumping rate corresponding to the detection results of the infrared thermal imaging detector, The pumping rate is positively correlated with the diffusion volume, flow rate, and temperature of the leakage steam.

2. The high temperature steam system tubing protection system of claim 1, wherein, Further including: A valve linkage device connected to each pipeline valve of the high-temperature steam system pipeline for controlling the opening and closing of each pipeline valve; and The processing calculation device is further configured to control the opening and closing of the corresponding pipeline valve through the valve linkage device according to the detection results of each detection point.

3. The high temperature steam system tubing protection system of claim 2, wherein, The processing computing device controls opening and closing of the corresponding pipeline valve through the valve linkage according to the detection result of each detection point, Close the nearest pipeline valves upstream and downstream of the detection point where steam leakage is detected.

4. The high temperature steam system tubing protection system of claim 1, wherein, The steam extraction device comprises: An air extraction port is arranged between each risk position and the spraying module on the side thereof; an air exhaust pipe is arranged above the air extraction port and communicates with the air extraction port; An air supply part is used to send a flowing air stream into the air exhaust pipe.

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