Large transformer fire high-temperature smoke injection simulation experiment device

Abstract

The application provides a large transformer fire high-temperature smoke injection simulation experiment device, which comprises a box body, a spray pipe arranged on the box body, the spray pipe being arranged in communication with the inner cavity of the box body and being arranged to be on-off, a heating element arranged in the inner cavity of the box body, the heating element being used for heating oil to gasify the oil to form oil gas, the oil gas and the oil being mixed to form smoke, wherein the heating temperature of the heating element is adjustably arranged, and a detection component used for detecting real-time parameters of the smoke in the inner cavity of the box body, so as to control the spray pipe to be communicated when the real-time parameters of the smoke in the inner cavity of the box body are equal to set parameters, and the smoke in the inner cavity of the box body is sprayed out of the spray pipe. The application solves the problem of poor accuracy of the simulation experiment result of the large transformer fire in the prior art.

Description

Technical Field

[0001] This invention relates to the field of transformer fire simulation device technology, and more specifically, to a large transformer fire high-temperature smoke jet simulation experimental device. Background Technology

[0002] Large transformers commonly use heat detectors, smoke detectors, infrared thermal imagers, and other composite fire detectors to identify early characteristics such as smoke particles and high temperatures in order to detect fires early. The detection signals are then incorporated into automatic fire alarm and linkage systems. It is evident that the performance of fire detectors determines the efficiency and accuracy of fire alarms for large transformers. Therefore, it is necessary to conduct fire detector performance tests through large transformer fire simulation experiments.

[0003] However, due to the complex composition of large transformer oil, the generation and ejection of high-temperature oil vapor and smoke in the early stage of a fire are difficult to reproduce using general experimental equipment, resulting in poor accuracy of the results of large transformer fire simulation experiments. Summary of the Invention

[0004] The main objective of this invention is to provide a high-temperature smoke jet simulation experimental device for large transformer fires, so as to solve the problem of poor accuracy of the results of existing large transformer fire simulation experiments.

[0005] To achieve the above objectives, the present invention provides a high-temperature smoke jet simulation experimental device for large transformer fires, comprising: a housing, on which a jet pipe is disposed, the jet pipe being connected to the inner cavity of the housing and being operable to open and close; a heating element disposed in the inner cavity of the housing, the heating element being used to heat oil to vaporize the oil to form oil gas, the oil gas and oil mixing to form smoke; wherein, the heating temperature of the heating element is adjustable; and a detection component, the detection component being used to detect the real-time parameters of the smoke in the inner cavity of the housing, and when the real-time parameters of the smoke in the inner cavity of the housing are equal to a set parameter, controlling the jet pipe to open, so that the smoke in the inner cavity of the housing is ejected from the jet pipe.

[0006] Furthermore, the detection component includes a first detection element, a second detection element, and a third detection element. The first detection element, the second detection element, and the third detection element are used to detect the real-time temperature, real-time optical density, and real-time pressure of the smoke in the inner cavity of the box, respectively, so as to control the connection of the spray pipe when the real-time temperature is equal to the set temperature, the real-time optical density is equal to the set optical density, and the real-time pressure is equal to the set pressure.

[0007] Furthermore, the high-temperature smoke jet simulation experimental device for large transformer fires also includes a gas supply component, which is used to contain high-pressure gas. The gas supply component is connected to the inner cavity of the chamber via a gas pipeline that can be switched on and off. When the real-time temperature equals the set temperature and the real-time optical density equals the set optical density, the gas pipeline is controlled to be connected so that the high-pressure gas enters the inner cavity of the chamber at a set pressure.

[0008] Furthermore, the heating element is an electric heating furnace, and the heating power of the electric heating furnace can be adjusted to regulate the heating temperature of the heating element; the heating element is connected to the controller so that the controller controls the opening and closing of the heating element according to the detection result of the first detection element.

[0009] Furthermore, a first solenoid valve is installed on the gas pipeline, and a second solenoid valve is installed on the injection pipe. The first solenoid valve, the second solenoid valve, and the detection component are all communicatively connected to the controller. When the real-time temperature equals the set temperature, the real-time pressure is less than the set pressure, and the real-time optical density equals the set optical density, the controller controls the first solenoid valve to open and the second solenoid valve to close.

[0010] Furthermore, the housing includes a top wall, a bottom wall, a first circumferential side wall, a second circumferential side wall, a third circumferential side wall, and a fourth circumferential side wall that are connected to each other. The second detection element is disposed on the second circumferential side wall, and the first detection element and the third detection element are disposed alternately on the top wall.

[0011] Furthermore, a pressure relief pipeline is also provided on the fourth circumferential side wall. The pressure relief pipeline is connected to the inner cavity of the box in a way that allows the pressure relief pipeline to be connected to the inner cavity of the box when the real-time pressure is equal to the maximum preset pressure.

[0012] Furthermore, a first connecting port is provided on the second circumferential side wall of the box, one end of which is connected to a gas pipeline, and the other end of which is connected to the inner cavity of the box.

[0013] Furthermore, a second connecting port is provided on the fourth circumferential side wall of the housing. One end of the second connecting port is connected to the injection pipe, and the other end of the second connecting port is connected to the inner cavity of the housing.

[0014] Furthermore, a mounting groove is provided on the first circumferential side wall of the housing for installing a door. The door is closable relative to the first circumferential side wall, and a sealing element is provided on the groove wall to seal the door.

[0015] The present invention provides a high-temperature smoke jet simulation experimental device for large transformer fires, comprising a housing, a heating element, and a detection component. A jet pipe is installed on the housing. The heating element heats the oil to vaporize it, forming oil-gas mixture. The oil-gas mixture and oil-liquid mixture form smoke. The detection component detects the real-time parameters of the smoke within the housing cavity. When the real-time parameters of the smoke within the housing cavity equal a set parameter, the jet pipe is connected, allowing the smoke within the housing cavity to be ejected from the jet pipe. This allows the high-temperature smoke jet simulation experimental device for large transformer fires to accurately control and simulate the high-temperature smoke environment during a transformer fire, ensuring that the smoke ejected from the jet pipe accurately simulates the smoke generated in the early stages of a transformer fire. Furthermore, the smoke ejected from the jet pipe can reliably test the performance of fire detectors, thus solving the problem of poor accuracy in existing large transformer fire simulation experiments. Simultaneously, by simply adding oil to the heating element, the high-temperature smoke jet simulation experimental device for large transformer fires can be reused multiple times, reducing the experimental cost. The device also has the advantages of simple structure and ease of use. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of an embodiment of the high-temperature flue gas injection simulation experimental apparatus for a large transformer fire according to the present invention is shown.

[0018] The above figures include the following reference numerals:

[0019] 1. Housing; 2. Injection pipe; 3. Heating element; 4. First detection element; 5. Second detection element; 6. Third detection element; 7. Gas supply element; 8. Gas pipeline; 10. First solenoid valve; 11. Second solenoid valve; 12. First circumferential side wall; 15. Fourth circumferential side wall; 16. Pressure relief pipeline; 101. Door. Detailed Implementation

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] Please refer to Figure 1 This invention provides a high-temperature smoke jet simulation experimental device for a large transformer fire, comprising: a housing 1, on which a jet pipe 2 is disposed, the jet pipe 2 being connected to the inner cavity of the housing 1 and being operable to open and close; a heating element 3, disposed in the inner cavity of the housing 1, the heating element 3 being used to heat oil to vaporize the oil to form oil gas, the oil gas and oil mixing to form smoke; wherein, the heating temperature of the heating element 3 is adjustable; and a detection component, the detection component being used to detect the real-time parameters of the smoke in the inner cavity of the housing 1, so that when the real-time parameters of the smoke in the inner cavity of the housing 1 are equal to the set parameters, the jet pipe 2 is controlled to open, so that the smoke in the inner cavity of the housing 1 is ejected from the jet pipe 2.

[0024] The high-temperature smoke jet simulation experimental device for large transformer fires of the present invention includes a housing, a heating element, and a detection component. A jet pipe is installed on the housing. The heating element heats the oil to vaporize it, forming oil vapor. The oil vapor and oil mix to form smoke. The detection component detects the real-time parameters of the smoke in the housing cavity. When the real-time parameters of the smoke in the housing cavity equal a set parameter, the jet pipe is connected, allowing the smoke in the housing cavity to be ejected from the jet pipe. This allows the high-temperature smoke jet simulation experimental device for large transformer fires of the present invention to accurately control and simulate the high-temperature smoke environment during a transformer fire, ensuring that the smoke ejected from the jet pipe 2 accurately simulates the smoke generated in the early stages of a transformer fire. Furthermore, the smoke ejected from the jet pipe 2 can reliably test the performance of fire detectors, thus solving the problem of poor accuracy in the results of existing large transformer fire simulation experiments. Simultaneously, by simply adding oil to the heating element 3, the high-temperature smoke jet simulation experimental device for large transformer fires of this application can be reused multiple times, reducing the experimental cost. The high-temperature smoke jet simulation experimental device for large transformer fires of this application also has the advantages of simple structure and ease of use.

[0025] In this embodiment, the detection component includes a first detection element 4, a second detection element 5, and a third detection element 6. The first detection element 4, the second detection element 5, and the third detection element 6 are respectively used to detect the real-time temperature, real-time optical density, and real-time pressure of the smoke in the inner cavity of the housing 1, so as to control the spray pipe 2 to connect when the real-time temperature is equal to the set temperature, the real-time optical density is equal to the set optical density, and the real-time pressure is equal to the set pressure.

[0026] Specifically, by controlling the connection of the injection pipe 2 when the real-time temperature equals the set temperature, the real-time optical density equals the set optical density, and the real-time pressure equals the set pressure, it can be ensured that the temperature, optical density, and pressure of the smoke ejected from the injection pipe 2 are the same as the parameters of the smoke generated in the early stage of a transformer fire. This ensures that the smoke ejected from the injection pipe 2 can accurately simulate the smoke generated in the early stage of a transformer fire.

[0027] Specifically, the first detection element 4 is a temperature sensor, the third detection element 6 is a pressure sensor, and the second detection element 5 is a smoke optical density meter.

[0028] In this embodiment, the high-temperature smoke jet simulation experimental device for large transformer fire also includes a gas supply component 7, which is used to contain high-pressure gas. The gas supply component 7 is connected to the inner cavity of the box 1 in a switchable manner through a gas pipeline 8, so that when the real-time temperature is equal to the set temperature and the real-time optical density is equal to the set optical density, the gas pipeline 8 is controlled to be connected so that the high-pressure gas enters the inner cavity of the box 1 at a set pressure.

[0029] Specifically, by setting the gas pipeline 8 to be connected when the real-time temperature equals the set temperature and the real-time optical density equals the set optical density, high-pressure gas enters the inner cavity of the box 1 at a set pressure, thereby increasing the real-time pressure of the smoke in the inner cavity of the box 1 until the third detection element 6 detects that the real-time pressure of the smoke in the inner cavity of the box 1 equals the set pressure. This can simulate the smoke ejection phenomenon caused by explosion or pressure fluctuation in a transformer fire, ensuring that the ejection pipe 2 can reach the connection condition and the smoke in the inner cavity of the box 1 can be smoothly ejected from the ejection pipe 2.

[0030] In this embodiment, the heating element 3 is an electric heating furnace, and the heating power of the electric heating furnace can be adjusted to regulate the heating temperature of the heating element 3; the heating element 3 is communicatively connected to the controller so that the controller controls the opening and closing of the heating element 3 according to the detection result of the first detection element 4.

[0031] Specifically, this setup allows the heating element 3 to automatically and precisely adjust the heating temperature according to experimental requirements, ensuring that the real-time temperature of the smoke in the inner cavity of the chamber 1 can be heated to the set temperature, ensuring that the spray pipe 2 can achieve the connection condition, and that the smoke in the inner cavity of the chamber 1 can be smoothly ejected from the spray pipe 2; at the same time, the heating temperature of the heating element 3 is adjustable, making the heating element 3 suitable for transformer fire simulation experiments of different scales and types.

[0032] In this embodiment, a first solenoid valve 10 is provided on the gas pipeline 8, and a second solenoid valve 11 is provided on the injection pipe 2. The first solenoid valve 10, the second solenoid valve 11, and the detection component are all communicatively connected to the controller. When the real-time temperature is equal to the set temperature, the real-time pressure is less than the set pressure, and the real-time optical density is equal to the set optical density, the controller controls the first solenoid valve 10 to open and the second solenoid valve 11 to close. When the real-time temperature is equal to the set temperature, the real-time optical density is equal to the set optical density, and the real-time pressure is equal to the set pressure, the controller controls the first solenoid valve 10 to close and the second solenoid valve 11 to open.

[0033] Specifically, by setting the first solenoid valve 10 and the second solenoid valve 11, the controllability of smoke generation and spraying process during the simulation experiment is ensured. This ensures that when the real-time temperature equals the set temperature, the real-time pressure is less than the set pressure, and the real-time optical density equals the set optical density, the gas pipeline 8 is connected, the spray pipe 2 is disconnected, and high-pressure gas is introduced into the inner cavity of the chamber 1, ensuring that the real-time pressure of the smoke in the inner cavity of the chamber 1 increases, and preventing low-pressure smoke from being sprayed out from the spray pipe 2. When the real-time temperature equals the set temperature, the real-time optical density equals the set optical density, and the real-time pressure equals the set pressure, the gas pipeline 8 is disconnected, and the spray pipe 2 is connected, preventing high-pressure gas from continuing to be introduced into the inner cavity of the chamber 1, and the smoke in the inner cavity of the chamber 1 can be smoothly sprayed out from the spray pipe 2.

[0034] In this embodiment, the housing 1 includes a top wall, a bottom wall, a first circumferential side wall 12, a second circumferential side wall, a third circumferential side wall, and a fourth circumferential side wall 15 that are connected to each other. The second detection element 5 is disposed on the second circumferential side wall, and the first detection element 4 and the third detection element 6 are disposed at intervals on the top wall.

[0035] Specifically, this structural layout enables the detection components to monitor the environmental parameters inside the enclosure 1 from all angles, ensuring the comprehensiveness and accuracy of the simulation experimental data, and is suitable for multi-angle and multi-directional research on the characteristics of transformer fire smoke.

[0036] In this embodiment, a pressure relief pipe 16 is also provided on the fourth circumferential side wall 15. The pressure relief pipe 16 is connected to the inner cavity of the housing 1 in a way that allows the pressure relief pipe 16 to be connected to the inner cavity of the housing 1 when the real-time pressure is equal to the maximum preset pressure.

[0037] Specifically, this safety pressure relief design effectively prevents explosions that may be caused by excessively high real-time smoke pressure in the inner cavity of the chamber 1 during the experiment, ensuring the safety of experimental personnel and equipment. This makes the large transformer fire high-temperature smoke jet simulation experimental device of the present invention suitable for fire simulation experiments under high-pressure environments.

[0038] Specifically, the maximum preset pressure refers to the maximum pressure that the housing 1 can withstand.

[0039] In this embodiment, a first communication port is provided on the second circumferential side wall of the housing 1. One end of the first communication port is connected to the gas pipeline 8, and the other end of the first communication port is connected to the inner cavity of the housing 1.

[0040] Specifically, this arrangement ensures that the high-pressure gas in the gas pipeline 8 can flow into the inner cavity of the box 1 through the first connecting port, thereby ensuring that the real-time pressure of the smoke in the inner cavity of the box 1 increases smoothly.

[0041] In this embodiment, a second communication port is provided on the fourth side wall 15 of the housing 1. One end of the second communication port is connected to the spray pipe 2, and the other end of the second communication port is connected to the inner cavity of the housing 1.

[0042] Specifically, this design ensures that the smoke inside the cavity of the housing 1 can enter the spray pipe 2 through the second connecting port and then be smoothly sprayed out from the spray pipe 2.

[0043] In this embodiment, a mounting groove is provided on the first circumferential side wall 12 of the housing 1. The mounting groove is used to install the door 101. The door 101 is openable and closable relative to the first circumferential side wall 12. A sealing element is provided on the groove wall of the mounting groove to seal the door 101.

[0044] Specifically, this setup not only facilitates the operation and observation of experimental personnel, but also effectively prevents smoke leakage, ensuring the cleanliness and safety of the experimental environment. This makes the large transformer fire high-temperature smoke jet simulation experimental device of the present invention suitable for fire research and equipment testing scenarios that require frequent entry and exit from the enclosure 1.

[0045] Specifically, the enclosure 1 is made of high-pressure resistant heat insulation material, and the dimensions of the enclosure 1 are 50cm*50cm*50cm.

[0046] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0047] The high-temperature smoke jet simulation experimental device for large transformer fires of the present invention includes a housing, a heating element, and a detection component. A jet pipe is installed on the housing. The heating element heats the oil to vaporize it, forming oil vapor. The oil vapor and oil mix to form smoke. The detection component detects the real-time parameters of the smoke in the housing cavity. When the real-time parameters of the smoke in the housing cavity equal a set parameter, the jet pipe is connected, allowing the smoke in the housing cavity to be ejected from the jet pipe. This allows the high-temperature smoke jet simulation experimental device for large transformer fires of the present invention to accurately control and simulate the high-temperature smoke environment during a transformer fire, ensuring that the smoke ejected from the jet pipe 2 accurately simulates the smoke generated in the early stages of a transformer fire. Furthermore, the smoke ejected from the jet pipe 2 can reliably test the performance of fire detectors, thus solving the problem of poor accuracy in the results of existing large transformer fire simulation experiments. Simultaneously, by simply adding oil to the heating element 3, the high-temperature smoke jet simulation experimental device for large transformer fires of this application can be reused multiple times, reducing the experimental cost. The high-temperature smoke jet simulation experimental device for large transformer fires of this application also has the advantages of simple structure and ease of use.

[0048] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0049] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A large transformer fire high-temperature smoke injection simulation experiment device, characterized in that, include: A housing (1) is provided with a spray pipe (2), which is connected to the inner cavity of the housing (1) and can be switched on and off. A heating element (3) is disposed in the inner cavity of the housing (1). The heating element (3) is used to heat the oil to vaporize the oil and form oil vapor. The oil vapor and the oil are mixed to form smoke. The heating temperature of the heating element (3) is adjustable. The detection component is used to detect the real-time parameters of the smoke in the inner cavity of the box (1), so that when the real-time parameters of the smoke in the inner cavity of the box (1) are equal to the set parameters, the spray pipe (2) is connected so that the smoke in the inner cavity of the box (1) is sprayed out from the spray pipe (2). The detection component includes a first detection element (4), a second detection element (5), and a third detection element (6). The first detection element (4) and the third detection element (6) are used to detect the real-time temperature and real-time pressure of the smoke in the inner cavity of the box (1), respectively. The second detection element (5) is used to detect the real-time optical density of the smoke in the inner cavity of the box (1), so as to control the spray pipe (2) to be connected when the real-time temperature is equal to the set temperature, the real-time optical density is equal to the set optical density, and the real-time pressure is equal to the set pressure. The heating element (3) is an electric heating furnace, and the heating power of the electric heating furnace is adjustable to adjust the heating temperature of the heating element (3); the heating element (3) is connected to the controller so that the controller controls the opening and closing of the heating element (3) according to the detection result of the first detection element (4); The high-temperature flue gas injection simulation experimental device for large transformer fire also includes a gas supply component (7), which is used to contain high-pressure gas. The gas supply component (7) is connected to the inner cavity of the box (1) in a scalable manner through a gas pipeline (8). A first solenoid valve (10) is provided on the gas pipeline (8), and a second solenoid valve (11) is provided on the injection pipe (2). The first solenoid valve (10), the second solenoid valve (11), and the detection component are all connected to the controller in communication. When the real-time temperature is equal to the set temperature, the real-time pressure is less than the set pressure, and the real-time optical density is equal to the set optical density, the controller controls the first solenoid valve (10) to open and the second solenoid valve (11) to close, so that the high-pressure gas enters the inner cavity of the box (1) at the set pressure. When the real-time temperature is equal to the set temperature, the real-time optical density is equal to the set optical density, and the real-time pressure is equal to the set pressure, the controller controls the first solenoid valve (10) to close and the second solenoid valve (11) to open.

2. The large transformer fire high temperature smoke injection simulation experiment device according to claim 1, characterized in that, The housing (1) includes a top wall, a bottom wall, a first circumferential side wall (12), a second circumferential side wall, a third circumferential side wall and a fourth circumferential side wall (15) that are connected to each other. The second detection element (5) is disposed on the second circumferential side wall, and the first detection element (4) and the third detection element (6) are disposed at intervals on the top wall.

3. The high-temperature smoke jet simulation experimental device for large transformer fires according to claim 2, characterized in that, A pressure relief pipe (16) is also provided on the fourth circumferential side wall (15). The pressure relief pipe (16) is connected to the inner cavity of the box (1) in a way that allows the pressure relief pipe (16) to be connected to the inner cavity of the box (1) when the real-time pressure is equal to the maximum preset pressure.

4. The high-temperature smoke jet simulation experimental device for large transformer fires according to claim 1, characterized in that, A first communication port is provided on the second circumferential side wall of the box (1). One end of the first communication port is connected to the gas pipeline (8), and the other end of the first communication port is connected to the inner cavity of the box (1).

5. The high-temperature smoke jet simulation experimental device for large transformer fires according to claim 1, characterized in that, A second communication port is provided on the four sides of the box (1) and the side wall (15). One end of the second communication port is connected to the spray pipe (2), and the other end of the second communication port is connected to the inner cavity of the box (1).

6. The high-temperature smoke jet simulation experimental device for large transformer fires according to claim 1, characterized in that, The first circumferential sidewall (12) of the housing (1) is provided with an installation groove for installing a door (101). The door (101) is openable and closable relative to the first circumferential sidewall (12). A sealing element is provided on the groove wall of the installation groove to seal the door (101).

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