Gas leakage detection equipment

Abstract

The utility model provides gas leakage detection equipment. The equipment comprises an infrared spectral imager and an intelligent image enhancement black body, the infrared spectral imager, the preset detection position and the intelligent image enhancement black body are located on the same straight line; the infrared spectral imager comprises a lens, an optical filter, a detector and a controller, and the lens, the optical filter and the detector are located on the same straight line; the intelligent image enhancement black body comprises a black body; the lens is used for focusing light rays radiated by the black body into the infrared spectral imager; the optical filter is used for filtering light outside a preset wavelength range; the detector is used for converting the filtered light into an infrared spectrum image from an optical signal; and the controller is used for acquiring the infrared spectrum image and outputting leakage gas concentration distribution data corresponding to the infrared spectrum image. According to the utility model, the imaging effect can be prevented from being influenced by poor light in an indoor transformer substation and outdoor cloudy days, and leaked gas concentration distribution data at a gas leakage position can be accurately detected.

Description

Technical Field

[0001] The utility model relates to the technical field of gas leakage detection, in particular to a gas leakage detection device. Background Art

[0002] Currently, the annual consumption of SF6 in power systems reaches 5,000 to 6,000 tons, and continues to increase at a rate of 20% per year. The existing gas inventory in the power industry's in-service equipment is approximately 18,000 tons, equivalent to over 14 million tons of carbon dioxide. Many SF6 electrical equipment has been in operation for over 15 years and is gradually entering its maintenance period. Common causes of SF6 gas leaks in power equipment include aging seals, dust trapped on sealing surfaces, weld leakage, casing pinholes, and porcelain bushing damage. When a low-pressure alarm sounds or a leak is detected during an inspection, a gas imaging device is used to locate the leak and observe the rate of leakage. Rapid leaks are typically repaired by applying sealant or tightening screws. If replacement of components is required, a power outage is coordinated for maintenance. Slow leaks are treated by regular refilling and later combined with a power outage for maintenance.

[0003] Existing SF6 gas leak detection technologies typically include foaming, bandaging, sniffing, laser, and infrared imaging. The foaming and bandaging methods are often manual, time-consuming, labor-intensive, and highly risky. Sniffing and laser methods are currently common contact monitoring methods that can only detect the approximate location of the leak, but cannot precisely locate it. These methods also present challenges such as long operation times in large spaces, low efficiency, and difficulty locating the leak. Infrared imaging detection technology, in practical engineering applications, faces the challenge of requiring high environmental adaptability. In indoor substations and on cloudy days outdoors, SF6 gas infrared imaging is poor, making it impossible to discern gas leak images. This reduces the accuracy of gas leak detection and limits its application scenarios and scope. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a gas leakage detection device to avoid the poor light in indoor substations and outdoor cloudy days affecting the imaging effect, and can accurately detect the gas leakage location and leakage gas concentration distribution data, with a wide range of application scenarios and application scope.

[0005] In order to achieve the above-mentioned purpose, the technical solutions adopted in the embodiments of the present invention are as follows:

[0006] In a first aspect, an embodiment of the present invention provides a gas leak detection device, characterized in that it includes: an infrared spectral imager and an intelligent image-enhanced blackbody; the infrared spectral imager is located on one side of a preset detection position, and the intelligent image-enhanced blackbody is located on the other side of the preset detection position, and the infrared spectral imager, the preset detection position, and the intelligent image-enhanced blackbody are on the same straight line;

[0007] The infrared spectrum imager includes a lens, a filter, a detector and a controller, wherein the lens, the filter and the detector are located on the same straight line, and the detector is communicatively connected to the controller; the intelligent image enhancement blackbody includes a blackbody;

[0008] The blackbody is used to radiate light within a preset wavelength range;

[0009] The lens is used to focus the light radiated by the black body and make it incident on the infrared spectroscopic imager;

[0010] The optical filter is used to filter out light outside the preset wavelength range;

[0011] The detector is used to convert the filtered light from an optical signal into an infrared spectrum image;

[0012] The controller is used to obtain the infrared spectrum image and output leakage gas concentration distribution data corresponding to the infrared spectrum image.

[0013] Furthermore, the embodiment of the present utility model provides a first possible implementation of the first aspect, wherein the infrared spectrum imager further includes a first communication module, and the first communication module is communicatively connected to the controller;

[0014] The intelligent image enhancement blackbody further includes a second communication module; the first communication module is communicatively connected with the second communication module.

[0015] Furthermore, an embodiment of the present invention provides a second possible implementation of the first aspect, wherein the intelligent image-enhanced black body also includes a steering module, which is communicatively connected to the second communication module; the steering module is used to drive the black body to rotate horizontally or vertically.

[0016] Furthermore, an embodiment of the utility model provides a third possible implementation of the first aspect, wherein the intelligent image-enhanced black body also includes a temperature control module, which is communicatively connected to the second communication module; the temperature control module is used to adjust the temperature of the black body.

[0017] Furthermore, the embodiment of the present utility model provides a fourth possible implementation of the first aspect, wherein the controller stores the initial temperature of the black body;

[0018] The controller is configured to transmit the initial temperature to the second communication module via the first communication module after the gas leakage detection device is turned on;

[0019] The temperature control module is used to set the temperature of the black body to the initial temperature.

[0020] Furthermore, an embodiment of the present invention provides a fifth possible implementation of the first aspect, wherein the intelligent image-enhanced black body further includes a power module, and the power module is used to supply power to the intelligent image-enhanced black body.

[0021] Furthermore, the embodiment of the present utility model provides a sixth possible implementation of the first aspect, wherein the controller stores an initial horizontal angle and an initial vertical angle of the black body;

[0022] The controller is configured to transmit the initial transverse angle and the initial longitudinal angle to the second communication module via the first communication module after the gas leakage detection device is turned on;

[0023] The steering module is used to adjust the black body to an initial position corresponding to the initial transverse angle and the initial longitudinal angle.

[0024] Furthermore, an embodiment of the present utility model provides a seventh possible implementation of the first aspect, wherein the leaked gas is SF6 gas.

[0025] Furthermore, an embodiment of the present invention provides an eighth possible implementation of the first aspect, wherein the preset wavelength range is 10.3 to 10.7 μm.

[0026] An embodiment of the utility model provides a gas leakage detection device, which includes: an infrared spectrum imager and an intelligent image enhancement black body; the infrared spectrum imager is located on one side of a preset detection position, and the intelligent image enhancement black body is located on the other side of the preset detection position, and the infrared spectrum imager, the preset detection position and the intelligent image enhancement black body are on the same straight line; the infrared spectrum imager includes a lens, a filter, a detector and a controller, the lens, the filter and the detector are located on the same straight line, and the detector is communicatively connected to the controller; the intelligent image enhancement black body includes a black body; the black body is used to radiate light within a preset wavelength range; the lens is used to focus the light radiated by the black body and input it into the infrared spectrum imager; the filter is used to filter out light outside the preset wavelength range; the detector is used to convert the filtered light from an optical signal into an infrared spectrum image; the controller is used to obtain the infrared spectrum image and output leakage gas concentration distribution data corresponding to the infrared spectrum image. This utility model combines an infrared spectrum imager with an intelligent image enhancement black body to detect gas leakage, which can enhance the infrared spectrum imaging effect of the infrared spectrum imager, make the color of the leaked gas clearly different from the background color, avoid the infrared imaging effect of the leaked gas affected by poor light in indoor substations and outdoor cloudy days, and accurately detect the leakage gas concentration distribution data at the gas leakage location, with a wide range of application scenarios and application scope.

[0027] Other features and advantages of the embodiments of the present invention will be described in the subsequent description, or some features and advantages can be inferred or determined without doubt from the description, or can be learned by implementing the above-mentioned technology of the embodiments of the present invention.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic structural diagram of a gas leakage detection device provided by an embodiment of the present utility model is shown;

[0031] Figure 2 A schematic structural diagram of another gas leakage detection device provided by an embodiment of the present utility model is shown. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] At present, the most common SF6 gas leak detection technology is the sniffing method, which uses a handheld electronic chemical meter to find locations with high gas concentrations. However, this method can only find the approximate location and cannot accurately determine the leak point. It is also necessary to use foaming methods, bandaging methods, and other covering methods to find the leak location in areas with higher concentrations. This method is time-consuming and inefficient.

[0034] SF6 gas infrared imaging technology faces challenges in practical engineering applications, particularly in indoor substations and outdoors on cloudy days. SF6 gas infrared imaging is poor, making it difficult to discern gas leaks, severely limiting its application scenarios and scope. Therefore, accurately detecting SF6 gas leaks in indoor substations and outdoors on cloudy days has become a pressing issue.

[0035] In order to improve the above problems, an embodiment of the present invention provides a gas leakage detection device, which is described in detail below.

[0036] This embodiment provides a gas leakage detection device. Figure 1 The structure diagram of the gas leak detection device shown in the figure includes: an infrared spectrum imager 10 and an intelligent image enhancement black body 20; the infrared spectrum imager 10 is located on one side of a preset detection position, and the intelligent image enhancement black body 20 is located on the other side of the preset detection position, and the infrared spectrum imager 10, the preset detection position and the intelligent image enhancement black body 20 are on the same straight line;

[0037] The above-mentioned preset detection position is a position where gas leakage is prone to occur. When gas leakage occurs at the preset detection position, the light emitted by the black body passes through the leaked gas and enters the lens of the infrared spectroscopic imager 10. Part of the light passing through the leaked gas is absorbed, and only a small amount of light enters the lens to form an image in the detector. After imaging, smoky leaked gas can be seen.

[0038] like Figure 1 As shown, the infrared spectrum imager 10 includes a lens 11, a filter 12, a detector 13 and a controller 14. The lens 11, the filter 12 and the detector 13 are located on the same straight line, and the detector 13 is communicatively connected to the controller 14. The intelligent image enhancement blackbody 20 includes a blackbody 21.

[0039] The black body 21 is used to radiate light within a preset wavelength range;

[0040] The lens 11 is used to focus the light radiated by the black body and input it into the infrared spectrometer; the lens 11 may be a lens group with a focusing function;

[0041] The filter 12 is used to filter out light outside a preset wavelength range;

[0042] The detector 13 is used to convert the filtered light from an optical signal into an infrared spectrum image;

[0043] The controller 14 is used to obtain an infrared spectrum image and output leakage gas concentration distribution data corresponding to the infrared spectrum image.

[0044] The above-mentioned infrared spectroscopic imager 10 can be in the form of a handheld camera, a fixed-point camera, a camera mounted on a robot or a drone, etc. The external light is focused by the lens 11 and enters the interior of the infrared spectroscopic imager 10. The filter 12 filters out irrelevant light outside the preset wavelength range, so that the light in the preset wavelength range is irradiated on the detector and converted into an electrical signal. The electrical signal is the infrared spectrum image. The controller obtains the gas concentration of each pixel point according to the grayscale value of each pixel point in the leaked gas contour in the infrared spectrum image, thereby obtaining the leakage gas concentration distribution data.

[0045] In one embodiment, the leaked gas may be SF6 gas, and the preset wavelength range may be 10.3 to 10.7 μm. When detecting a leaked gas, a black body radiates light with a wavelength of 10.3 to 10.7 μm to the surrounding area. When passing through the SF6 leaked gas, most of the infrared light with a wavelength of 10.4 to 10.6 μm is absorbed. Therefore, when SF6 gas leaks at the detection location, the SF6 leaked gas will appear dark on the infrared spectrum image, while other light within the black body range that has not passed through the SF6 leaked gas will appear bright on the infrared spectrum image. The dark outline is the outline of the SF6 gas. The darker the pixel within the SF6 gas outline, the greater the corresponding SF6 gas concentration. That is, the greater the grayscale value of the pixel within the SF6 gas outline, the greater the SF6 gas concentration. The diffusion trend of the gas can be obtained based on the change in the SF6 gas outline.

[0046] In one embodiment, since the distance between the infrared spectroscopic imager 10 and the intelligent image enhancement blackbody 20 is fixed, a grayscale value-gas concentration correspondence table can be obtained by calibration to obtain the gas concentration values ​​corresponding to different grayscale values ​​at this distance. This relationship table is stored in the controller. Based on this relationship table and the grayscale value of each pixel in the leak gas outline in the infrared spectroscopic image, the controller can directly output the gas concentration value of each pixel in the leak gas outline, thereby obtaining leak gas concentration distribution data. This leak gas concentration distribution data can be output in the form of an image, with pixels of different grayscale values ​​representing different gas concentration values. The gas concentration values ​​of different color depth areas can also be annotated in the image.

[0047] In indoor substations and on cloudy days outdoors, the 10.3-10.7μm wavelength of natural light is weak, resulting in a dark, poor contrast between the leaking gas and the background in the infrared spectrum image. This prevents the formation of a clear infrared spectrum image of the SF6 gas leak. However, when an intelligent image enhancement blackbody is added, a distinct background is created directly behind the SF6 gas. The spectrum of radiation that passes through and does not pass through the SF6 gas creates a bright-dark contrast in the infrared spectrum image, enhancing the infrared spectrum image of the SF6 gas leak and creating a sharp contrast between the background and the SF6 gas outline.

[0048] The gas leak detection equipment provided in this embodiment combines an infrared spectral imager with an intelligent image-enhanced blackbody to detect leaked gas. This can enhance the infrared spectral imaging effect of the infrared spectral imager, making the color of the leaked gas clearly different from the background color, avoiding the impact of poor light in indoor substations and outdoor cloudy days on the imaging effect, and can accurately detect the leakage gas concentration distribution data at the gas leak location. It has a wide range of application scenarios and application scope.

[0049] In one embodiment, see Figure 2Another schematic structural diagram of a gas leak detection device is shown. The infrared spectroscopic imager 10 provided in this embodiment further includes a first communication module 15, which is communicatively connected to the controller 14;

[0050] The intelligent image enhancement blackbody 20 further includes a second communication module 22 ; the first communication module 15 is communicatively connected with the second communication module 22 , and the communication mode between the first communication module 15 and the second communication module 22 can be wireless communication.

[0051] The infrared spectral imager 10 can send instructions to the intelligent image enhancement black body 20 through the first communication module 15, and the intelligent image enhancement black body 20 can feedback the current status of the intelligent image enhancement black body 20 to the controller 14 in the infrared spectral imager 10 through the second communication module 22.

[0052] In one embodiment, Figure 2 As shown, the intelligent image enhancement blackbody provided in this embodiment further includes a steering module 23 , which is in communication connection with the second communication module 22 ; the steering module 23 is used to drive the blackbody to rotate horizontally or vertically.

[0053] The steering module 23 may include multiple motors arranged on the black body 21, and the black body 21 may be rotated in the horizontal or vertical direction by controlling the rotation of the motors. The horizontal rotation angle range of the black body 21 may be 0 to 180 degrees, and the vertical rotation angle range may be 0 to 180 degrees.

[0054] In one embodiment, Figure 2 As shown, the intelligent image enhancement blackbody provided in this embodiment further includes a temperature control module 24 , which is in communication connection with the second communication module 22 ; the temperature control module 24 is used to adjust the temperature of the blackbody.

[0055] In one embodiment, the intelligent image enhancement black body provided in this embodiment further includes a power module, and the power module is used to supply power to the intelligent image enhancement black body.

[0056] The above-mentioned intelligent image enhancement black body can be in the form of handheld, fixed-point bracket or hanging type, and the power module supplies power to the intelligent image enhancement black body as a whole. The power module can be a battery or an external power supply.

[0057] In one embodiment, the controller provided in this embodiment stores the initial temperature of the black body;

[0058] The controller is used to transmit the initial temperature to the second communication module through the first communication module after the gas leakage detection device is turned on;

[0059] The temperature control module is used to set the temperature of the black body to the initial temperature.

[0060] When the gas leak detection equipment is placed in the preset detection position and turned on, the controller sends a start command to the intelligent image enhanced black body through the first communication module, so that the power module is turned on to power the intelligent image enhanced black body; then the controller transmits the temperature control command carrying the initial temperature to the temperature control module through the first communication module and the second communication module, so that the temperature control module adjusts the temperature of the black body to the initial temperature. The initial temperature can be the commonly used setting temperature of the black body. The value range of the initial temperature can be 38 to 42 degrees, and the preferred value is 40 degrees.

[0061] Because a blackbody neither reflects nor transmits but completely absorbs incident light, when heated, the distribution of its radiated spectrum energy depends solely on temperature. Blackbody radiation is closely related to the emission and absorption of light. When a substance absorbs light, the light's energy is converted into heat within the substance. Simultaneously, the substance also radiates heat energy to its surroundings. If such a substance is placed in a vacuum, electromagnetic radiation, emanating entirely from the substance itself, can be observed. This is blackbody radiation. Blackbody radiation has a specific frequency and energy distribution, known as the blackbody radiation spectrum, and exhibits distinct characteristics at different temperatures.

[0062] In one embodiment, the controller provided in this embodiment stores an initial horizontal angle and an initial vertical angle of the black body;

[0063] The controller is used to transmit the initial transverse angle and the initial longitudinal angle to the second communication module through the first communication module after the gas leakage detection device is turned on;

[0064] The steering module is used to adjust the blackbody to an initial position corresponding to an initial transverse angle and an initial longitudinal angle.

[0065] The above-mentioned initial horizontal angle and initial vertical angle can be the commonly used setting positions of the black body when the infrared spectrum image obtained by imaging in the infrared spectrum imager can clearly reflect the distribution of the leaked gas, that is, when the black body is in the horizontal direction angle as the initial horizontal angle and the vertical direction angle as the initial vertical angle, a clearer infrared spectrum image can be obtained.

[0066] The controller transmits the initial horizontal angle and the initial longitudinal angle to the second communication module through the first communication module, and then the second communication module transmits them to the steering module. The steering module adjusts the black body to the position of the initial horizontal angle and the initial longitudinal angle in the vertical direction, so that the light radiated by the black body passes through the leaked gas and enters the infrared spectroscopic imager to obtain an infrared spectral image of the leaked gas.

[0067] In one embodiment, in order to further improve the imaging effect of the leaked gas, the controller provided in this embodiment is further configured to send a lateral rotation instruction to the steering module, so that the steering module controls the lateral angle of the black body to rotate within a first angle range;

[0068] The controller is also used to obtain all infrared spectral images obtained by imaging the detector when the lateral angle of the black body rotates within the first angle range, and take the lateral angle of the black body corresponding to the image with the largest light-dark contrast in all infrared spectral images as the optimal lateral angle, and send the optimal lateral angle to the steering module so that the steering module adjusts the lateral angle of the black body to the optimal lateral angle.

[0069] The controller sends a lateral rotation instruction to the steering module through the first communication module and the second communication module. The steering module controls the black body to gradually rotate in the horizontal direction from the minimum value of the first angle range to the maximum value of the first angle range, such as the first angle range of 0 to 180 degrees. The vertical position of the black body remains unchanged, and the black body temperature remains unchanged. The steering module controls the black body to rotate in the horizontal direction from a 0-degree position (such as the black body facing the left) to a 180-degree position (such as the black body facing the right, and the 90-degree position may be the direction in which the black body faces the infrared spectrum imager lens) to obtain continuous frame images in the infrared spectrum imager. The continuous frame images include infrared spectrum images of the black body at various horizontal angles, and the brightness and darkness contrast (i.e., image contrast) of all infrared spectrum images is obtained, that is, the grayscale contrast in the infrared spectrum image is obtained. The greater the difference, the greater the contrast. The black body lateral angle corresponding to the infrared spectrum image when the brightness and darkness contrast is the largest is used as the optimal lateral angle. That is, when the black body rotates in the horizontal direction, the infrared spectrum image obtained when the horizontal angle position is the optimal lateral angle has the best imaging effect.

[0070] The controller can transmit the calculated optimal lateral angle to the steering module through the first communication module and the second communication module, so that the steering module adjusts the horizontal angle of the black body to the optimal lateral angle position, thereby improving the imaging effect of the leaking gas.

[0071] In one embodiment, the controller provided in this embodiment is further configured to send a longitudinal rotation instruction to the steering module, so that the steering module controls the longitudinal angle of the black body to rotate within a second angle range;

[0072] The controller is also used to obtain all infrared spectral images obtained by imaging the detector when the longitudinal angle of the black body rotates within the second angle range, and use the longitudinal angle of the black body corresponding to the image with the largest light-dark contrast in all infrared spectral images as the optimal longitudinal angle, and send the optimal longitudinal angle to the steering module so that the steering module adjusts the longitudinal angle of the black body to the optimal longitudinal angle.

[0073] The controller sends a longitudinal rotation instruction to the steering module through the first communication module and the second communication module. The steering module controls the black body to gradually rotate in the vertical direction from the minimum value of the second angle range to the maximum value of the second angle range, such as the above-mentioned second angle range is 0 to 180 degrees, the position of the black body in the horizontal direction remains unchanged, and the black body temperature remains unchanged. The steering module controls the black body to rotate in the vertical direction from the 0 degree position 9 (such as directly below the black body) to the 180 degree position (such as directly above the black body) to obtain continuous frame images in the infrared spectrum imager. The continuous frame images include infrared spectrum images of the black body at various vertical angles, and the brightness and darkness contrast (i.e., image contrast) of all infrared spectrum images is obtained. The longitudinal angle of the black body corresponding to the infrared spectrum image when the brightness and darkness contrast is maximum is used as the optimal longitudinal angle. That is, when rotating in the vertical direction, the infrared spectrum image obtained when the vertical angle position of the black body is the optimal longitudinal angle has the best imaging effect.

[0074] The controller can transmit the calculated optimal longitudinal angle to the steering module through the first communication module and the second communication module, so that the steering module adjusts the vertical angle of the black body to the optimal longitudinal angle position, thereby improving the imaging effect of the leaking gas.

[0075] In one embodiment, the controller provided in this embodiment is further configured to send a temperature adjustment instruction to the temperature control module, so that the temperature control module adjusts the temperature of the black body to gradually change within a preset temperature range;

[0076] The controller is also used to obtain all infrared spectral images obtained by the detector imaging when the temperature of the black body gradually changes within a preset temperature range, and take the black body temperature corresponding to the image with the largest light-dark contrast in all infrared spectral images as the optimal temperature, and send the optimal temperature to the temperature control module so that the temperature control module adjusts the temperature of the black body to the optimal temperature.

[0077] The controller sends a temperature adjustment instruction to the steering module through the first communication module and the second communication module. The temperature control module controls the temperature of the black body to gradually increase from the minimum value of the preset temperature range to the maximum value of the preset temperature range. For example, the above-mentioned preset temperature range can be 20°C to 100°C. The position of the black body in the horizontal and vertical directions remains unchanged. The temperature control module controls the temperature of the black body to gradually increase from 20°C to 100°C to obtain continuous frame images in the infrared spectrum imager. The continuous frame images include infrared spectrum images of the black body at various temperature values, and the brightness and darkness contrast of all infrared spectrum images are obtained. The black body temperature corresponding to the infrared spectrum image when the brightness and darkness contrast is the largest is taken as the optimal temperature, that is, the infrared spectrum image obtained when the temperature of the black body is at the optimal temperature has the best imaging effect.

[0078] The controller may transmit the calculated optimal temperature to the temperature control module through the first communication module and the second communication module, so that the temperature control module adjusts the temperature of the black body to the optimal temperature, thereby improving the imaging effect of the leaked gas.

[0079] The above-mentioned intelligent image-enhanced blackbody can also transmit the current working status to the controller in real time through the second communication module and the first communication module. The above-mentioned working status includes the switching status of the blackbody, the current temperature of the blackbody, the temperature distribution uniformity of the blackbody, the lateral rotation angle of the blackbody, the longitudinal rotation angle of the blackbody and the power of the power module and other information, so that the controller can obtain the infrared spectrum image corresponding to each working state.

[0080] In one embodiment, the controller provided in this embodiment is further configured to determine the gas concentration value corresponding to each pixel point according to the grayscale value of each pixel point within the outline of the leaking gas in the infrared spectrum image.

[0081] Since the leaked gas and the background in the above-mentioned infrared spectral image appear in different colors, the outline of the leaked gas can be clearly displayed. The concentration of the leaked gas can be determined based on the light and dark contrast of the infrared spectral image. The diffusion trend of the leaked gas can be determined based on the changes in the outline of the leaked gas in continuous infrared spectral image frames. The controller obtains the gas concentration value corresponding to each pixel point based on the grayscale value of each pixel point in the leaked gas outline. When the distance between the infrared spectral imager and the intelligent image enhancement blackbody is fixed, each pixel point in the leaked gas outline in the infrared spectral image has a corresponding gas concentration value at different grayscale values.

[0082] In one embodiment, the controller provided in this embodiment is further configured to determine the gas leakage amount at a preset detection position according to the gas concentration values ​​corresponding to all the pixel points within the leaking gas contour.

[0083] The controller determines the leakage amount corresponding to each pixel point based on the gas concentration value and gas thickness of each pixel point within the leaking gas contour in the infrared spectrum image, and accumulates and counts the leakage amounts corresponding to all pixels within the leaking gas contour to obtain the gas leakage amount at the preset detection position.

[0084] The above-mentioned controller may also include a display unit, which displays the leakage gas concentration distribution data and gas leakage amount through the display unit. The above-mentioned controller may also be connected to a host computer in the substation to communicate with the detected leakage gas concentration distribution data and gas leakage amount to the host computer in real time to display them to the user.

[0085] The gas leak detection equipment provided in this embodiment can realize infrared image enhancement of SF6 leakage in working conditions such as indoor substations or outdoor substations on cloudy days, and at the same time achieve the best infrared imaging effect, thereby obtaining the most accurate leakage location, outline, concentration and other information of SF6 gas leakage; the coordinated detection of intelligent image enhancement blackbody and infrared spectrum imager meets the engineering application requirements of electrical equipment detection, improves the intelligence and automation of SF6 leak detection, improves the convenience of power detection business, reduces the workload of operation and maintenance personnel, and achieves a breakthrough in the engineering application of infrared spectroscopy technology for SF6 leak detection of electrical equipment, expands the engineering application scope and market promotion capabilities of SF6 gas leak detection equipment, and provides more convenient and scientific technical means for operation and maintenance detection in the power industry.

[0086] Based on the above embodiments, this embodiment provides an example of a control method for the gas leakage detection device provided in the above embodiments, which can be specifically performed with reference to the following steps:

[0087] Step S31: After the infrared spectral imager and the intelligent image enhancement blackbody are correctly set at the preset detection positions, the controller in the infrared spectral imager sends a start command to the power module in the intelligent image enhancement blackbody to turn on the intelligent image enhancement blackbody;

[0088] Step S32: the controller sends an initial temperature instruction to the temperature control module, so that the temperature control module sets the temperature of the blackbody to 40° C.

[0089] Step S33: The controller sends a lateral rotation instruction to the steering module so that the steering module controls the black body to rotate left and right. The controller determines the optimal lateral angle based on the infrared spectrum image with the maximum light-dark contrast when the black body rotates at a lateral angle within a first angle range.

[0090] In step S34, the controller sends a longitudinal rotation instruction to the steering module so that the steering module controls the black body to rotate up and down. The controller determines the optimal longitudinal angle based on the infrared spectrum image with the maximum light-dark contrast when the black body rotates at a longitudinal angle within the second angle range.

[0091] Step S35: The controller sends a temperature adjustment instruction to the temperature control module, so that the temperature control module gradually adjusts the temperature of the black body from 20°C to 100°C. The controller determines the optimal temperature based on the infrared spectrum image with the maximum light-dark contrast when the temperature of the black body changes from 20°C to 100°C.

[0092] In step S36, the controller sends the optimal transverse angle and the optimal longitudinal angle to the steering module, so that the steering module sets the position of the black body to the optimal transverse angle and the optimal longitudinal angle, and sends the optimal temperature to the temperature control module, so that the temperature control module controls the temperature of the black body to the optimal temperature;

[0093] Step S37, after the blackbody position and temperature are at the optimal level, the controller obtains the infrared spectrum image obtained by the detector imaging, and determines the leakage gas concentration distribution data and gas leakage amount at the preset detection position based on the infrared spectrum image.

[0094] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working process of the system described above can refer to the corresponding process in the aforementioned embodiment and will not be repeated here.

[0095] In addition, in the description of the embodiments of the present invention, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0096] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0097] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A gas leak detection device, characterized in that: include: An infrared spectral imager and an intelligent image enhancement blackbody; the infrared spectral imager is located on one side of a preset detection position, the intelligent image enhancement blackbody is located on the other side of the preset detection position, and the infrared spectral imager, the preset detection position and the intelligent image enhancement blackbody are on the same straight line; The infrared spectrum imager includes a lens, a filter, a detector and a controller, wherein the lens, the filter and the detector are located on the same straight line, and the detector is communicatively connected to the controller; the intelligent image enhancement blackbody includes a blackbody; The blackbody is used to radiate light within a preset wavelength range; The lens is used to focus the light radiated by the black body and make it incident on the infrared spectroscopic imager; The optical filter is used to filter out light outside the preset wavelength range; The detector is used to convert the filtered light from an optical signal into an infrared spectrum image; The controller is used to obtain the infrared spectrum image and output leakage gas concentration distribution data corresponding to the infrared spectrum image.

2. The gas leakage detection device according to claim 1, characterized in that: The infrared spectrum imager further includes a first communication module, which is communicatively connected to the controller; The intelligent image enhancement blackbody further includes a second communication module; the first communication module is communicatively connected with the second communication module.

3. The gas leakage detection device according to claim 2, characterized in that: The intelligent image enhancement black body further includes a steering module, which is communicatively connected to the second communication module; the steering module is used to drive the black body to rotate horizontally or vertically.

4. The gas leakage detection device according to claim 2, characterized in that: The intelligent image enhancement blackbody further includes a temperature control module, which is communicatively connected to the second communication module; the temperature control module is used to adjust the temperature of the blackbody.

5. The gas leakage detection device according to claim 4, characterized in that: The controller stores the initial temperature of the black body; The controller is configured to transmit the initial temperature to the second communication module via the first communication module after the gas leakage detection device is turned on; The temperature control module is used to set the temperature of the black body to the initial temperature.

6. The gas leakage detection device according to claim 1, characterized in that: The intelligent image enhancement black body further includes a power supply module, and the power supply module is used to supply power to the intelligent image enhancement black body.

7. The gas leakage detection device according to claim 3, characterized in that: The controller stores an initial transverse angle and an initial longitudinal angle of the black body; The controller is configured to transmit the initial transverse angle and the initial longitudinal angle to the second communication module via the first communication module after the gas leakage detection device is turned on; The steering module is used to adjust the black body to an initial position corresponding to the initial transverse angle and the initial longitudinal angle.

8. The gas leakage detection device according to any one of claims 1 to 7, characterized in that: The leaked gas is SF6 gas.

9. The gas leakage detection device according to claim 8, characterized in that: The preset wavelength range is 10.3-10.7 μm.

Images