Pipeline device and drainage method of steam pipeline

Abstract

The invention relates to a steam heat supply pipe, and discloses a pipeline device which comprises a first heat preservation structure wrapping the periphery of a main pipeline and a second heat preservation structure detachably connected with the first heat preservation structure. The second heat preservation structure covers the drainage pipeline and the connecting mechanism, the control mechanism comprises a sensor used for detecting whether steam in the main pipeline is in a saturated state or an overheated state and an electric control valve used for controlling closing or opening of the drainage pipeline, and the electric control valve is electrically connected with the sensor. Opening or closing of the drainage pipeline can be automatically adjusted according to the steam state so that it can be guaranteed that heat energy is not wasted when steam is conveyed, meanwhile, liquid can be discharged in time, and efficient and safe operation of the pipeline device is guaranteed. In addition, the invention further provides a drainage method of the steam pipeline, and the pipeline device is adopted.

Description

Technical Field

[0001] The invention relates to a steam heating pipe, and specifically provides a pipe device and a steam pipe drainage method. Background Art

[0002] As energy conservation, emission reduction and improving comprehensive energy utilization efficiency have become a global consensus, the development of industrial park centralized heating has been actively promoted. In this context, many industrial parks have built a large number of steam pipeline network facilities to achieve effective distribution and utilization of thermal energy. Among them, the medium transported by most steam pipeline networks is superheated steam. However, during the long-distance transportation of steam, due to the influence of factors such as heat conduction and convection, the temperature of superheated steam will gradually drop to its saturation temperature, and condensate will be generated in this process.

[0003] In order to ensure the safe operation of the steam pipe network system and avoid the "water hammer" phenomenon caused by the accumulation of condensate, it is necessary to set up drain points at key positions of the steam pipe to discharge the condensate in time. However, in actual operation, due to changes in the working conditions of the steam pipe network, sometimes superheated steam is transported, and sometimes saturated steam; when transporting superheated steam, since no condensate is produced, the cut-off valve of the drain pipe can be closed to avoid heat loss. Due to changes in flow and steam, manual adjustment cannot accurately identify these changes, resulting in the failure of the drain pipe to be closed in time during the transportation of superheated steam, which causes the steam to drop from the superheated state to the saturated temperature, forming condensate, accompanied by steam leakage, increasing steam loss. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a pipeline device that can automatically adjust the opening or closing of the drain pipeline according to the steam state to ensure that no heat energy is wasted when transporting steam, and at the same time, liquid can be discharged in time to ensure the efficient and safe operation of the pipeline device.

[0005] The technical problem to be solved by the present invention is to provide a steam pipe drainage method, which can automatically adjust the opening and closing of the drainage pipe according to the steam state to ensure that no heat energy is wasted when transporting steam, and at the same time can discharge condensed water in time to ensure the efficient and safe operation of the steam pipe network.

[0006] In order to achieve the above-mentioned objectives, on the one hand, the present invention provides a pipeline device, including a main pipeline, a connecting mechanism, a drain pipeline, an insulation mechanism and a control mechanism, the insulation mechanism including a first insulation structure wrapped around the outer periphery of the main pipeline and a second insulation structure detachably connected to the first insulation structure, the connecting mechanism is connected and penetrated through the first insulation structure and connects the main pipeline with the drain pipeline, the second insulation structure cover is arranged on the outside of the drain pipeline and the connecting mechanism, the control mechanism includes a sensor for detecting whether the steam in the main pipeline is in a saturated state or an overheated state and an electrically controlled valve for controlling the closing or opening of the drain pipeline, and the electrically controlled valve is electrically connected to the sensor.

[0007] Preferably, a filter and a steam trap are sequentially provided on the drain pipe at a side of the electric control valve away from the main pipe.

[0008] Preferably, the drain pipe is further provided with a cut-off valve between the electric control valve and the connecting mechanism.

[0009] Preferably, the sensor is a pressure sensor and / or a temperature sensor arranged inside the main pipeline.

[0010] Preferably, the connection mechanism comprises a box body and a connection pipe, the box body is communicated with the main pipeline, one end of the connection pipe is connected to the upper part of the side wall of the box body, and the other end is connected to the drain pipeline.

[0011] Preferably, the first thermal insulation structure includes at least one first thermal insulation layer, at least one first thermal insulation layer and a first metal layer connected in sequence from a side close to the main pipeline, and the second thermal insulation structure includes at least one second thermal insulation layer and a second metal layer connected in sequence from a side close to the first thermal insulation structure.

[0012] Preferably, the second heat-insulating structure is connected to the first metal layer through the magnetic attraction layer.

[0013] Preferably, the first thermal insulation layer is an aluminum silicate needle-punched blanket layer, the first thermal insulation layer and the second thermal insulation layer are glass wool layers respectively, and the first metal layer and the second metal layer are steel plate layers and / or aluminum plate layers respectively.

[0014] Preferably, a channel for accommodating the connecting mechanism and the drain pipe is formed on the first heat-insulating structure and the second heat-insulating structure.

[0015] A second aspect of the present invention provides a method for draining a steam pipe, using the pipe device of the present invention, when the sensor detects that the steam in the main pipe is in a saturated state, the electrically controlled valve opens to open the drain pipe, so that the liquid in the main pipe flows into the connecting mechanism and is discharged through the drain pipe; when the sensor detects that the steam in the main pipe is in an overheated state, the electrically controlled valve closes to close the drain pipe.

[0016] Through the above technical scheme, the pipeline device provided by the present invention includes a first insulation structure wrapped around the outer periphery of the main pipeline and a second insulation structure detachably connected to the first insulation structure. The connecting mechanism is connected and penetrated on the first insulation structure and connects the main pipeline with the drain pipeline. The second insulation structure cover is arranged on the outside of the drain pipeline and the connecting mechanism. The control mechanism includes a sensor for detecting whether the steam in the main pipeline is in a saturated state or an overheated state and an electrically controlled valve for controlling the closing or opening of the drain pipeline. The electrically controlled valve is electrically connected to the sensor and can automatically adjust the opening or closing of the drain pipeline according to the steam state to ensure that heat energy is not wasted when transporting steam. At the same time, the liquid can be discharged in time to ensure the efficient and safe operation of the pipeline device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a drain pipe of a pipe device of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the heat preservation mechanism of the pipeline device of the present invention.

[0019] Description of Reference Numerals

[0020] 1. Main pipeline; 2. Drain pipeline; 3. Connecting mechanism; 2-1. Sensor; 2-2. Electric control valve; 2-3. Shut-off valve; 2-4. Filter; 2-5. Drain; 3-1. Box; 3-2. Connecting pipe; 3-4. Box; 5. Passage; 6. Insulation mechanism; 61. First insulation structure; 61-1. First thermal insulation layer; 61-2. First insulation layer; 61-3. First metal layer; 62. Second insulation structure; 62-1. Magnetic attraction layer; 62-2. Second insulation layer; 62-3. Second metal layer. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention. The present invention can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0022] The present invention provides these embodiments to make the present invention thorough and complete, and fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, rather than as limiting.

[0023] It should be noted that, in the description of the present invention, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0024] In addition, the words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0025] It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0026] All terms used in the present invention have the same meanings as those understood by ordinary technicians in the field to which the present invention belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0028] The present invention provides a pipeline device, see Figure 1 and Figure 2, including a main pipeline 1, a connecting mechanism 3, a drain pipeline 2, an insulation mechanism 6 and a control mechanism. The insulation mechanism 6 includes a first insulation structure 61 wrapped around the outer periphery of the main pipeline 1 and a second insulation structure 62 detachably connected to the first insulation structure 61. The connecting mechanism 3 is connected and penetrated on the first insulation structure 61 and connects the main pipeline 1 with the drain pipeline 2. The second insulation structure 62 is covered on the outside of the drain pipeline 2 and the connecting mechanism 3. The insulation mechanism 6 can ensure that the main pipeline 1 and the drain pipeline 2 are at a suitable operating temperature, the first insulation structure 61 and the second insulation structure 62. The detachable connection facilitates the later maintenance or operation of the connecting mechanism 3 or the drain pipe 2. The control mechanism includes a sensor 2-1 for detecting whether the steam in the main pipe 1 is in a saturated state or an overheated state and an electric control valve 2-2 for controlling the closing or opening of the drain pipe 2. The electric control valve 2-2 is electrically connected to the sensor 2-1. When the sensor 2-1 detects that the steam in the main pipe 1 is in a saturated state, the electric control valve 2-2 opens the drain pipe 2 to discharge the liquid. When the sensor 2-1 detects that the steam in the main pipe 1 is in an overheated state, the electric control valve 2-2 closes to close the drain pipe 2. The electric control valve 2-2 can use a solenoid valve to avoid steam loss. The control mechanism can automatically adjust the opening or closing of the drain pipe according to the steam state to ensure that no heat energy is wasted when transporting steam. At the same time, the liquid can be discharged in time to ensure the efficient and safe operation of the pipeline device.

[0029] Regarding the state of steam, it should be noted that steam usually refers to the form of a liquid (for example, water) in a gaseous state. When a liquid is heated to its boiling point (for example, water is usually 100°C at standard atmospheric pressure), it begins to turn into steam. Steam is colorless, and it is not smoke. Smoke is actually formed by small water droplets or other particles suspended in the air. Saturated Steam: When a liquid reaches its boiling point, it will be completely converted into steam if it continues to be heated. The steam at this time is saturated steam. The pressure of saturated steam at a certain temperature is fixed, and there is a corresponding relationship between temperature and pressure. Superheated Steam: When the steam continues to be heated and its temperature rises above the saturation temperature of the liquid at the corresponding pressure, the steam becomes superheated steam. Superheated steam has higher energy and can be used for power generation, industrial heating and many other purposes.

[0030] In some embodiments, a filter 2-4 and a steam trap 2-5 are provided in sequence on the drain pipe 2 on the side of the electric control valve 2-2 away from the main pipe 1. The filter 2-4 is installed on the drain pipe 2 and is located between the electric control valve 2-2 and the steam trap 2-5 to filter the discharged condensed water to remove impurities and sediments that may exist therein, and prevent impurities and sediments from entering the steam trap 2-5, thereby extending the maintenance cycle of the steam trap 2-5 and ensuring the normal operation of the steam trap 2-5. The steam trap 2-5 prevents steam from escaping to ensure that only condensed water is discharged while steam is continued to be used, which can reduce steam loss and is beneficial to reducing transportation loss of the main pipe 1. The steam trap 2-5 is divided into multiple types, such as mechanical steam traps, thermodynamic steam traps, thermostatic steam traps, etc., which can be selected according to actual conditions.

[0031] In some embodiments, the drain pipe 2 is further provided with a shut-off valve 2-3 between the electric control valve 2-2 and the connecting mechanism (3). The shut-off valve 2-3 serves as a backup valve and is in an open state. When the electric control valve 2-2 fails, the shut-off valve 2-3 is activated to ensure the normal operation of the main pipe 1. At the same time, when the main pipe 1 is operating normally, the shut-off valve 2-3 can be closed to maintain the electric control valve 2-2.

[0032] In some embodiments, sensor 2-1 is a temperature sensor arranged inside the main pipeline 1. In addition, sensor 2-1 can also be a pressure sensor and a temperature-pressure composite sensor. Sensor 2-1 should be installed inside the main pipeline 1 or near the main pipeline 1 so that it can directly monitor the state of the steam and accurately reflect the steam temperature and pressure. It is usually selected on a straight pipe section where the steam flows smoothly and is not easily affected by local disturbances. Sensor 2-1 needs to be electrically connected to the electric control valve 2-2 so as to control the opening or closing of the electric control valve 2-2 according to the detected steam state (overheated or saturated). The signal transmission line of sensor 2-1 should ensure the accuracy of the signal. If necessary, shielded cables or other anti-interference measures can be used. Taking sensor 2-1 as a temperature sensor, for example, the temperature sensor uses a platinum resistance thermometer (PT100), a thermocouple and other temperature sensors to measure the temperature of the steam. According to the real-time temperature data, it is determined by looking up a table or calculating whether the steam is in an overheated state or a saturated state. If the temperature is higher than the saturation temperature of the liquid in the main pipeline 1 under the working pressure, the steam is considered to be in an overheated state; if the temperature is equal to or lower than the saturation temperature under the working pressure, the steam is considered to be in a saturated state. This is conducive to ensuring the accuracy of the operation of the electric control valve 2-2, opening the drain pipe 2 in time to discharge the liquid in the main pipeline 1, and improving the working efficiency of the main pipeline 1.

[0033] It should be noted that when the sensor 2-1 detects that the steam is in an overheated state, it sends a closing command to the electric control valve 2-2 to prevent unnecessary discharge of condensed water and steam; when the steam is detected to be in a saturated state, it sends an opening command to the electric control valve 2-2 to discharge the condensed water in time and avoid water hammer. In order to achieve automatic control, the sensor 2-1 needs to be connected to a controller (such as a PLC), which receives data from the sensor 2-1, issues commands to control the switch state of the electric control valve 2-2 after processing, and connects to the data acquisition and monitoring system to remotely monitor the steam state and record data for subsequent analysis and optimization of system performance; an alarm system can also be installed to issue an alarm when an abnormal situation is detected (such as a sensor 2-1 failure, an electric control valve 2-2 failure, etc.), and remind the operator to handle it in time.

[0034] In some embodiments, the connecting mechanism 3 includes a box body 3-1 and a connecting pipe 3-2. The box body 3-1 is connected to the main pipeline 1. One end of the connecting pipe 3-2 is connected to the upper part of the side wall of the box body 3-1 and the other end is connected to the drain pipe 2. One end of the connecting pipe 3-2 is connected to the upper part of the side wall of the box body 3-1 so that there is a liquid level difference. The box body 3-1 is a container or chamber, which is connected to the main pipeline 1 and is used to collect and store condensed water. It plays a role of buffering and isolation. The condensed water can be stored in the box body 3-1 before being discharged to cope with the occurrence of abnormal situations, which is also beneficial to the emergency repair work of the device. The connecting pipe 3-2 introduces the condensed water in the box body 3-1 into the drain pipe 2 so that it can be finally discharged, which is convenient for dealing with the layout and construction of the drain pipe 2.

[0035] In some embodiments, see Figure 2The first thermal insulation structure 61 includes at least one first thermal insulation layer 61-1, at least one first thermal insulation layer 61-2 and a first metal layer 61-3 connected in sequence from the side close to the main pipeline 1. The second thermal insulation structure 62 includes at least one second thermal insulation layer 62-2 and a second metal layer 62-3 connected in sequence from the side close to the first thermal insulation structure 61. The first thermal insulation layer 61-1 is made of a material with low thermal conductivity, such as aluminum silicate and rock wool, which can reduce the heat transfer of the main pipeline 1. The first thermal insulation layer 61-2 is made of a material with good thermal insulation performance, so that the main pipeline 1 and the first thermal insulation layer 61-1 maintain a suitable operating temperature and reduce the influence of the ambient temperature on the main pipeline 1. For example: polyurethane foam, perlite, foamed cement, etc. The first metal layer 61-3 is located on the outside to protect the inside The structures of the first thermal insulation layer 61-1 and the first heat preservation layer 61-2 are not damaged by external forces, such as rain, wind and sand, etc. The second heat preservation layer 62-2 is covered on the surrounding side of the drain pipe 2 and the connecting mechanism 3, so that the drain pipe 2 and the connecting mechanism 3 maintain a suitable operating temperature, and at the same time reduce the influence of the ambient temperature on the drain pipe 2 and the connecting mechanism 3. The second metal layer 62-3 is arranged on the outside of the second heat preservation layer 62-2, and the outside is the side away from the main pipeline 1 to protect the structure of the second heat preservation layer 62-2 from being damaged by external forces. The first metal layer 61-3 and the second metal layer 62-3 respectively enhance the overall strength and quality of the first heat preservation structure 61 and the second heat preservation structure 62, can withstand external force impact, and are conducive to extending the service life of the first heat preservation structure 61 and the second heat preservation structure 62.

[0036] In some embodiments, the second insulation structure 62 is connected to the first metal layer 61-3 through a magnetic layer 62-1. The magnetic layer 62-1 facilitates the connection or disassembly of the second insulation structure 62 and the first insulation structure 61 without the use of screws or other fasteners. The magnetic connection method simplifies the installation process and improves the efficiency of disassembling the second insulation structure 62 to operate the drain pipe 2. At the same time, it reduces the labor intensity of the staff, which is beneficial to reducing the cost and time of later maintenance of the drain pipe 2 and the connecting mechanism 3. The magnetic layer 62-1 fits with the first metal layer 61-3, which can improve the tightness of the connection between the second insulation structure 62 and the first insulation structure 61, which is beneficial to improve the insulation effect of the second insulation structure 62 and the first insulation structure 61 on the drain pipe 2 and the connecting mechanism 2.

[0037] In some embodiments, the first thermal insulation layer 61-1 is an aluminum silicate needle-punched blanket layer, the first thermal insulation layer 61-2 and the second thermal insulation layer 62-2 are respectively glass wool layers, and the first metal layer 61-3 and the second metal layer 62-3 are respectively steel plate layers and / or aluminum plate layers. The aluminum silicate needle-punched blanket has a low thermal conductivity coefficient and can reduce the heat transfer of the main pipeline 1. The glass wool has good thermal insulation performance, so that the second thermal insulation layer 62-2 and the first thermal insulation layer 61-2 maintain a suitable operating temperature. The steel plate layer has high strength, wear resistance, and corrosion resistance, and is suitable for use as a protective layer; the aluminum plate layer is lightweight, corrosion-resistant, and has good reflective performance, and is used as the first metal layer 61-3 and the second metal layer 62-3 according to actual use needs.

[0038] In some embodiments, a channel 5 for accommodating the connecting mechanism 3 and the drain pipe 2 is formed on the first insulation structure 61 and the second insulation structure 62, ensuring that when the external ambient temperature of the steam pipe system is low, the insulation mechanism 6 keeps the main pipe 1 at a suitable operating temperature. At the same time, the heat emitted by the main pipe 1 flows or is stored in the channel 5, so that key components such as the connecting mechanism 3 located in the channel 5 and the electric control valve 2-2 on the drain pipe 2 can operate normally.

[0039] The present invention also provides a steam pipe drainage method, which adopts the pipeline device of the present invention. The drainage method includes that the liquid in the main pipe 1 flows into the connecting mechanism 3 and is discharged through the drain pipe 2. When the sensor 2-1 detects that the steam in the main pipe 1 is in a saturated state, the electric control valve 2-2 is opened to open the drain pipe 2 to discharge the liquid. When the sensor 2-1 detects that the steam in the main pipe 1 is in an overheated state, the drain pipe 2 is closed. The opening and closing of the drain pipe 2 can be automatically adjusted according to the state of the steam to ensure that heat energy is not wasted when transporting steam. At the same time, condensed water can be discharged in time to ensure the efficient and safe operation of the steam pipe network.

[0040] In order to better understand the technical content of the present invention, the relatively preferred technical features are described below.

[0041] See also Figure 1 and Figure 2The present invention provides a pipeline device, including a main pipeline 1, a connecting mechanism 3, a drain pipeline 2, an insulation mechanism 6 and a control mechanism, the insulation mechanism 6 includes a first insulation structure 61 wrapped around the outer periphery of the main pipeline 1 and a second insulation structure 62 detachably connected to the first insulation structure 61, the connecting mechanism 3 is connected and penetrated on the first insulation structure 61 and connects the main pipeline 1 with the drain pipeline 2, the second insulation structure 62 is covered on the outside of the drain pipeline 2 and the connecting mechanism 3, the control mechanism includes a temperature sensor for detecting whether the steam in the main pipeline 1 is in a saturated state or an overheated state and an electric control valve 2-2 for controlling the closing or opening of the drain pipeline 2, the electric control valve 2-2 is electrically connected to the temperature sensor, the electric control valve 2-2 is a solenoid valve, a filter 2-4 and a steam trap 2-5 are sequentially arranged on the side of the drain pipeline 2 away from the solenoid valve, the drain pipeline 2 is also provided with a cut-off valve 2-3 between the solenoid valve and the connecting mechanism 3, the connecting mechanism 3 includes a box body 3-1 and a connecting pipe 3-2, the box 3-1 is connected to the main pipeline 1, one end of the connecting pipe 3-2 is connected to the upper part of the side wall of the box 3-4, and the other end is connected to the drain pipe 2, the first insulation structure 61 includes at least one first insulation layer 61-1, at least one first insulation layer 61-2 and a first metal layer 61-3 connected in sequence from the side close to the main pipeline 1, and the second insulation structure 62 includes at least one magnetic absorption layer 62-1, at least one second insulation layer 62-3 and a first metal layer 61-4 connected in sequence from the side close to the main pipeline 1. The second thermal insulation structure 62 is connected to the first metal layer 61-3 through the magnetic attraction layer 62-1, and the first thermal insulation structure 61 and the second thermal insulation structure 62 are formed with a channel 5 for accommodating the connecting mechanism 3 and the hydrophobic pipe 2. The first thermal insulation layer 61-1 is an aluminum silicate needle-punched blanket layer, the first thermal insulation layer 61-2 and the second thermal insulation layer 62-2 are glass wool layers respectively, and the first metal layer 61-3 and the second metal layer 62-3 are aluminum plate layers respectively.

[0042] The operation and beneficial effects of the pipeline device of the present invention are as follows: all components are in the initial state, the solenoid valve is closed by default, the shut-off valve 2-3 is in the closed state, the shut-off valve 2-3 is opened after the second insulation structure 62 is disassembled, and then the second insulation structure 62 is installed, and the condensate flows into the box body 3-1 from the main pipeline 1. When the temperature sensor detects that the steam is in an overheated state, the solenoid valve receives a closing signal, and the drain pipe 2 remains in a closed state. When the sensor 2-1 detects that the steam is in a saturated state, the solenoid valve receives an opening signal, and the drain pipe 2 opens to discharge the condensate. The opening and closing of the drain pipe are automatically adjusted according to the steam state to ensure that heat energy is not wasted when transporting steam, and that the condensate can be discharged in time to ensure efficient and safe operation of the steam network.

[0043] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0044] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A pipeline device, characterized in that: The invention comprises a main pipeline (1), a connecting mechanism (3), a drain pipeline (2), a heat-insulating mechanism (6) and a control mechanism, wherein the heat-insulating mechanism (6) comprises a first heat-insulating structure (61) wrapped around the outer periphery of the main pipeline (1) and a second heat-insulating structure (62) detachably connected to the first heat-insulating structure (61), the connecting mechanism (3) is connected and penetrated through the first heat-insulating structure (61) and connects the main pipeline (1) with the drain pipeline (2), the second heat-insulating structure (62) is covered on the outside of the drain pipeline (2) and the connecting mechanism (3), and the control mechanism comprises a sensor (2-1) for detecting whether the steam in the main pipeline (1) is in a saturated state or an overheated state and an electric control valve (2-2) for controlling the closing or opening of the drain pipeline (2), and the electric control valve (2-2) is electrically connected to the sensor (2-1).

2. The pipeline device according to claim 1, characterized in that The drain pipe (2) is provided with a filter (2-4) and a drain device (2-5) in sequence on the side of the electric control valve (2-2) away from the main pipe (1).

3. The pipeline device according to claim 2, characterized in that A cut-off valve (2-3) is also provided on the drain pipe (2) between the electric control valve (2-2) and the connecting mechanism (3).

4. The pipeline device according to claim 1, characterized in that The sensor (2-1) is a temperature sensor arranged inside the main pipeline (1).

5. The pipeline device according to claim 1, characterized in that The connecting mechanism (3) comprises a box body (3-1) and a connecting pipe (3-2); the box body (3-1) is connected to the main pipeline (1); one end of the connecting pipe (3-2) is connected to the upper part of the side wall of the box body (3-1), and the other end is connected to the drain pipeline (2).

6. The pipeline device according to any one of claims 1 to 5, characterized in that The first thermal insulation structure (61) comprises at least one first thermal insulation layer (61-1), at least one first thermal insulation layer (61-2) and a first metal layer (61-3) connected in sequence from a side close to the main pipeline (1), and the second thermal insulation structure (62) comprises at least one second thermal insulation layer (62-2) and a second metal layer (62-3) connected in sequence from a side close to the first thermal insulation structure (61).

7. The pipeline device according to claim 6, characterized in that The second heat-insulating structure (62) is connected to the first metal layer (61-3) via a magnetic attraction layer (62-1).

8. The pipeline device according to claim 6, characterized in that The first thermal insulation layer (61-1) is an aluminum silicate needle-punched blanket layer, the first thermal insulation layer (61-2) and the second thermal insulation layer (62-2) are respectively glass wool layers, and the first metal layer (61-3) and the second metal layer (62-3) are respectively steel plate layers and / or aluminum plate layers.

9. The pipeline device according to any one of claims 1 to 5, characterized in that The first heat-insulating structure (61) and the second heat-insulating structure (62) are formed with a channel (5) for accommodating the connecting mechanism (3) and the drain pipe (2).

10. A method for draining a steam pipeline, characterized in that: Using the pipeline device according to any one of claims 1 to 9; the drainage method comprises: When the sensor (2-1) detects that the steam in the main pipeline (1) is in a saturated state, the electrically controlled valve (2-2) opens to open the drain pipeline (2), so that the liquid in the main pipeline (1) flows into the connecting mechanism (3) and is discharged through the drain pipeline (2); When the sensor (2-1) detects that the steam in the main pipeline (1) is in an overheated state, the electric control valve (2-2) is closed to close the drain pipeline (2).

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