A flame simulator used in flame detectors

Abstract

The invention discloses a flame simulator applied to a flame detector, the flame simulator comprises a shell, a reflective cup, a light source board, a light-transmitting board, a first temperature detection device, a power supply device and a controller; the reflective cup is located inside the shell; the reflective cup comprises a cup body, and a cup bottom and a cup mouth located on opposite sides of the cup body; a light-through hole is provided on the cup bottom; a light-emitting surface of the light source board is located in the light-through hole and faces the cup mouth side; the light-transmitting board is located on the side of the cup mouth away from the cup bottom; the first temperature detection device is located on the side surface of the light source board away from the reflective cup; the first temperature detector is used to obtain a first temperature of the light source board; the power supply device is located on the side of the light source board away from the reflective cup; the controller is located on the side of the light source board away from the reflective cup; the controller is electrically connected to the power supply device, the first temperature detection device and the light source board respectively, and the controller is used to control the light-emitting frequency of the light beam emitted by the light source board according to the first temperature, so as to improve the light beam intensity stability of the simulated flame provided by the flame simulator.

Description

Technical Field

[0001] The invention relates to the technical field of flame simulation, and in particular to a flame simulator applied to a flame detector. Background Art

[0002] Red and ultraviolet flame detectors are very sensitive to hydrocarbons and carbon-containing compounds produced by fire combustion, and can be sensitively detected in the early stages of a fire. Therefore, they are gradually and widely used in large-space civil places with a wide range and span, and in flammable and explosive high-risk industrial places such as petrochemicals. According to the national fire protection facility inspection technical regulations and fire protection project acceptance specifications, flame detectors need to be debugged and tested after installation.

[0003] Flame simulators are usually used to simulate flames, and then flame detectors in explosion-proof places are tested to determine whether the flame detectors can work properly. However, while providing simulated flames, the flame simulator also generates heat due to the energy of the emitted light beam itself, which can cause explosions in explosion-proof places when the heat is high. Therefore, how to improve the safety of flame simulators has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The invention provides a flame simulator applied to a flame detector, which can improve the stability of the intensity of a light beam provided by the flame simulator to simulate a flame, and improve the explosion-proof property and safety of the flame simulator.

[0005] The present invention provides a flame simulator applied to a flame detector, comprising:

[0006] shell;

[0007] A reflective cup is located inside the housing; the reflective cup comprises a cup body, and a cup bottom and a cup mouth located on opposite sides of the cup body; the cup bottom is provided with a light-through hole;

[0008] A light source plate, wherein the light emitting surface of the light source plate is located in the light through hole and faces the cup mouth;

[0009] A light-transmitting plate, located at a side of the cup mouth away from the cup bottom;

[0010] A first temperature detection device is located on a surface of the light source board facing away from the reflective cup; the first temperature detector is used to obtain a first temperature of the light source board;

[0011] A power supply device, located on a side of the light source plate away from the reflective cup;

[0012] The controller is located on the side of the light source board away from the reflective cup; the controller is electrically connected to the power supply device, the first temperature detection device and the light source board respectively, and is used to control the light frequency of the light beam emitted by the light source board according to the first temperature.

[0013] Optionally, the controller is configured as:

[0014] Determine whether the absolute value of the difference between the first temperature and the preset temperature is greater than the preset difference;

[0015] If so, the first light emitting frequency of the light source panel is determined according to the current temperature difference between the first temperature and the preset temperature, and the light source panel is controlled to operate at the first light emitting frequency.

[0016] Optionally, the controller is specifically configured as:

[0017] Based on the mapping relationship between the temperature difference and the set frequency, the set frequency corresponding to the current temperature difference is determined as the first light output frequency.

[0018] Optionally, the flame simulator also includes:

[0019] A second temperature detection device is attached to the power supply device; the second temperature detection device is used to obtain a second temperature of the power supply device;

[0020] The controller is also electrically connected to the second temperature detection device, and the controller is also used to control the power supply state of the power supply device according to the second temperature.

[0021] Optionally, the controller is configured as:

[0022] Determining whether the second temperature is greater than a set temperature;

[0023] If so, the power supply device is controlled to be in a power supply stop state.

[0024] Optionally, the flame simulator also includes:

[0025] A switch signal input terminal is located outside the housing;

[0026] The controller is also electrically connected to the switch signal input terminal, and is also used to determine the required frequency corresponding to the start signal according to the start signal provided by the switch signal input terminal, and control the light source board to operate at the required frequency; after the light source board operates at the required frequency, the controller is also used to control the light output frequency of the light beam emitted by the light source board according to the first temperature.

[0027] Optionally, the switch signal input terminal includes an intrinsically safe switch.

[0028] Optionally, the flame simulator also includes:

[0029] The rear seat is located on a side of the power supply device away from the reflective cup; the rear seat is provided with a charging port; the charging port is electrically connected to the power supply device;

[0030] A rear seat pressure ring is located at a side of the rear seat away from the reflective cup and abuts against the rear seat;

[0031] The shell comprises a cylinder and a rear cover, wherein the cylinder is fixedly connected to the rear seat pressure ring, and the rear cover is detachably connected to the cylinder.

[0032] Optionally, the housing includes a front cover and a barrel;

[0033] The front cover comprises an opening and a boss surrounding the opening; the boss abuts against the light-transmitting plate; along the extension direction of the cylinder, the light-transmitting plate overlaps with the opening;

[0034] The cylinder is fixedly connected to the front cover.

[0035] Optionally, the flame simulator also includes:

[0036] A handle is detachably connected to the shell.

[0037] The technical solution provided by the present invention is to set a first temperature detection device and a controller in the flame simulator. The first temperature detection device can obtain the first temperature of the light source board during operation. The controller adjusts the light output frequency of the light source board in real time according to the first temperature to improve the stability of the light beam intensity provided by the light source board, and improve the explosion-proofness and safety of the flame simulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic structural diagram of a flame simulator applied to a flame detector provided by an embodiment of the present invention;

[0039] Figure 2 A schematic structural diagram of another flame simulator applied to a flame detector provided by an embodiment of the present invention;

[0040] Figure 3 A structural schematic diagram of another flame simulator applied to a flame detector provided by an embodiment of the present invention;

[0041] Figure 4 A schematic diagram of the structure of a reflective cup provided by an embodiment of the present invention;

[0042] The reference numerals are described as follows:

[0043] 100. Flame simulator; 10. Shell; 80. Reflective cup; 81. Light hole; 20. Light source board; 30. Translucent board; 31. Explosion-proof screw; 41. First temperature detection device; 42. Second temperature detection device; 50. Power supply device; 60. Controller; 70. Switch signal input terminal; 11. Front cover; 12. Back seat; 121. Back seat pressure ring; 123. Back cover; 13. Cylinder; 14. Charging port; 140. Charging indicator light; 110. Opening; 111. Boss; 90. Handle; 91. First sealing ring; 92. Second sealing ring; 93. Third sealing ring. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0045] Figure 1 A schematic diagram of the structure of a flame simulator applied to a flame detector provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the flame simulator 100 includes a housing 10, a reflective cup 80, a light source board 20, a light-transmitting board 30, a first temperature detection device 41, a power supply device 50 and a controller 60. The reflective cup 80 is located inside the housing 10; the reflective cup 80 includes a cup body, and a cup bottom and a cup mouth located on opposite sides of the cup body; a light-through hole 81 is provided at the cup bottom. The light-emitting surface of the light source board 20 is located in the light-through hole 81 and faces the cup mouth side. The light-transmitting board 30 is located on the side of the cup mouth away from the cup bottom. The first temperature detection device 41 is located on the side surface of the light source board 20 away from the reflective cup 80, and the first temperature detection device 41 is used to obtain the first temperature of the light source board 20. The power supply device 50 is located on the side of the light source board 20 away from the reflective cup 80. The controller 60 is located on the side of the light source board 20 away from the reflective cup 80; the controller 60 is electrically connected to the power supply device 50, the first temperature detection device 41 and the light source board 20 respectively, and is used to control the light frequency of the light beam emitted by the light source board 20 according to the first temperature.

[0046] Among them, the shell 10 includes materials such as aluminum alloy, and the aluminum alloy material has the characteristics of light weight, high strength, good corrosion resistance, etc. The structure of the reflective cup 80 is parabolic, and the material of the reflective cup 80 can be aluminum alloy. After the parabolic cup structure is processed by a CNC machine tool, the parabolic cup structure is ground and polished to make the surface roughness of the cup structure higher than RA0.4, and then the inner surface of the parabolic cup structure is aluminum-plated, so that the formed reflective cup 80 has a mirror reflection effect, achieves a higher beam reflection efficiency, and has good anti-oxidation performance. The light source board 20 is provided with a halogen lamp and other light source equipment, and the light source board 20 can provide infrared and ultraviolet light beams simulating flames. The light source board 20 includes materials such as aluminum, and the aluminum material has good heat dissipation, and can quickly transfer the heat generated by the light source board 20 when it is working to the cavity A. The light-transmitting plate 30 can include alumina glass, etc. The first temperature detection device 41 includes a temperature sensor such as a thermistor and a thermocouple. The power supply device 50 includes a battery, etc. The light emission parameters of the halogen lamp can be set according to actual needs. In an optional embodiment, the halogen lamp can emit ultraviolet light with a wavelength of 185nm to 265nm, and infrared light with a wavelength of 2.7μm to 5.0μm. After being reflected by the reflective cup 80 and emitted by the light-transmitting plate 30, the flame simulator 100 has a transmittance of more than 75% for ultraviolet light of 185nm to 265nm, and a transmittance of more than 80% for infrared light of 2.7μm to 5.0μm.

[0047] It should be noted that a part of the light beam emitted by the light source panel 20 can be directly emitted through the light-transmitting plate 30, and the other part will be emitted to the inner surface of the cup body of the reflective cup 80. The reflective cup 80 will reflect the light beam emitted by the light-transmitting plate 30 to the light-transmitting plate 30, and emit it to the outside of the flame simulator 100 through the light-transmitting plate 30, so as to increase the light output of the flame simulator 100, thereby improving the simulation effect of the flame simulator 100 on the flame.

[0048] Specifically, the light-emitting surface of the light source board 20 is set in the light hole 81 at the bottom of the reflective cup 80 and toward the cup mouth. Since the curvature of the curve at the bottom of the reflective cup 80 is large, the reflective cup 80 can reflect a large number of optical fibers to increase the light intensity of the light beam emitted by the flame simulator 100. The higher the light-emitting frequency of the light source board 20, the greater the light irradiance of the light beam emitted by the light source board 20, that is, the greater the light intensity, the greater the working power of the light source board 20, and the higher the heat generated during operation. The higher the light-emitting frequency of the light beam emitted by the light source board 20, the longer the light source board 20 is in the working state within a unit cycle. Since the light beam emitted by the light source board 20 has energy, when the light intensity of the light beam is high or low, it may cause the light beam emitted by the flame simulator 100 to fail to meet the light irradiance requirement of the flame detector for the flame beam. In addition, when the temperature of the light source board 20 is high, the flame simulator 100 itself has a high temperature, which may cause the flame simulator 100 to have dangerous situations such as explosions. Therefore, by setting a first temperature detection device 41 on the side surface of the light source board 20 away from the reflective cup 80, the first temperature of the light source board 20 when working can be obtained in real time through the first temperature detection device 41. When the first temperature is high, it means that the intensity of the light beam emitted by the current light source board 20 is high. The controller 60 can reduce the light output frequency of the light source board 20 to adjust the intensity of the light beam emitted by the light source board 20, and at the same time reduce the heat generated by the light source board 20 when working, thereby improving the intensity stability of the flame beam provided by the flame simulator 100, as well as the working safety of the flame simulator 100, and improving the explosion-proof performance of the flame simulator 100.

[0049] The technical solution of the embodiment of the present invention is to set a first temperature detection device and a controller in the flame simulator. The first temperature detection device can obtain the first temperature of the light source board during operation. The controller adjusts the light output frequency of the light source board in real time according to the first temperature to improve the stability of the light beam intensity provided by the light source board, and improve the explosion-proofness and safety of the flame simulator.

[0050] It should be noted that the structure of the reflective cup 80 is parabolic. Figure 4 As shown, the parabolic calculation formula is x 2 =ky, x1 and y1 can be substituted into x according to the design requirements of the flame simulator 100 for x1 and y1. 2 =ky is calculated to determine the value of the coefficient k, and further determine the parabolic shape of the reflective cup 80. The reflective cup 80 having the parabolic shape can be processed by a numerically controlled machine tool or the like.

[0051] Optionally, the controller 60 is configured to: determine whether the absolute value of the difference between the first temperature and the preset temperature is greater than the preset difference; if so, determine the first light output frequency of the light source panel 20 according to the current temperature difference between the first temperature and the preset temperature, and control the light source panel 20 to operate at the first light output frequency.

[0052] The preset temperature and the preset difference may be fixed values ​​or non-fixed values. The preset temperature may be determined according to actual flame simulation requirements, the preset difference may be set according to the preset temperature, and the preset difference may be proportional to the preset temperature, that is, the larger the preset temperature, the larger the preset difference. The preset temperature and the preset difference may be set according to actual requirements, and are not specifically limited here.

[0053] Specifically, the preset temperature can be set according to the flame that the flame simulator 100 needs to simulate and the corresponding beam intensity. The higher the beam intensity corresponding to the simulated flame, the greater the value of the preset temperature. Correspondingly, the lower the beam intensity corresponding to the simulated flame, the smaller the value of the preset temperature. After obtaining the first temperature, the controller 60 calculates the absolute value of the difference between the first temperature and the preset temperature, and the absolute value of the difference indicates the degree of difference between the first temperature and the preset temperature. If the absolute value of the difference is greater than the preset difference, it means that the degree of difference between the first temperature and the preset temperature is large. At this time, the difference between the first temperature and the preset temperature can be calculated, and the difference is used as the current temperature difference, which can be a positive or negative number. According to the current temperature difference, the first light frequency of the light source board 20 is determined. The first light frequency can be greater than or less than the current light frequency of the light source board 20, so that after the light source board 20 is controlled to work at the first light frequency, the first temperature of the light source board 20 can be close to or equal to the preset temperature, so that the intensity of the emitted light beam meets the light intensity requirement of the simulated flame, and the working reliability of the flame simulator 100 is improved.

[0054] Optionally, the controller 60 is specifically configured to: based on a mapping relationship between the temperature difference and the set frequency, determine the set frequency corresponding to the current temperature difference as the first light output frequency.

[0055] The mapping relationship may be a curve graph of the temperature difference and the set frequency, or a corresponding table of the temperature difference and the set frequency, etc., which may be obtained through experiments or experience.

[0056] Specifically, when the mapping relationship is a graph of temperature difference and set frequency, after obtaining the current temperature difference, the graph of temperature difference and set frequency can be directly compared to determine the set frequency on the graph corresponding to the current temperature difference as the first light output frequency. Alternatively, when the mapping relationship is a corresponding table of temperature difference and set frequency, after obtaining the current temperature difference, the table can be directly looked up to obtain the set frequency corresponding to the current temperature difference, and the set frequency can be determined as the first light output frequency.

[0057] Optionally, the setting frequency is inversely proportional to the temperature difference, that is, the larger the temperature difference, the lower the setting frequency. The larger the temperature difference (including positive and negative numbers), the higher the first temperature is, the greater the intensity of the beam currently emitted by the flame simulator 100 is, and the first light emission frequency determined at this time is lower, so that when the light source board 20 works at the first light emission frequency, the intensity of the emitted beam can be reduced to prevent the flame simulator 100 from continuously emitting a beam of higher light intensity, thereby improving the explosion-proofness and beam intensity stability of the flame simulator 100. Correspondingly, the smaller the temperature difference, the higher the setting frequency. When the temperature difference is a negative number, the smaller the temperature difference, the lower the first temperature is, the intensity of the beam currently emitted by the flame simulator 100 is less than the required beam intensity, and the first light emission frequency determined at this time is higher, so that when the light source board 20 works at the first light emission frequency, the intensity of the emitted beam can reach the required beam intensity, or be close to the required beam intensity, so as to improve the flame simulator 100's simulation effect on the flame and improve the reliability of the flame simulator 100.

[0058] Optional, Figure 2 A schematic diagram of the structure of another flame simulator applied to a flame detector provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the flame simulator 100 also includes a second temperature detection device 42, which is attached to the power supply device 50; the second temperature detection device 42 is used to obtain the second temperature of the power supply device 50; the controller 60 is also electrically connected to the second temperature detection device 42, and the controller 60 is also used to control the power supply status of the power supply device 50 according to the second temperature.

[0059] The second temperature detection device 42 includes a temperature sensor such as a thermistor or a thermocouple, which can be selected according to actual needs and is not specifically limited here. The power supply device 50 includes a battery and the like.

[0060] Specifically, the heat generated by the light source board 20 in the flame simulator 100 during operation will affect the safety of the flame simulator 100. On the other hand, the power supply device 50 will also generate heat in the process of supplying power to the light source board 20. When the heat generated by the power supply device 50 is high, it will also affect the safety of the flame simulator 100. Therefore, by arranging a second temperature detection device 42 on the surface or inside of the power supply device 50, the second temperature of the power supply device 50 during operation can be obtained in real time through the second temperature detection device 42. When the second temperature is high, it means that the heat generated by the current power supply device 50 during operation is high. In order to avoid the flame simulator 100 becoming an ignition source due to the high heat generated by the power supply device 50 during operation, the controller 60 can control the power supply device 50 to stop supplying power to the light source board 20, so that the second temperature of the power supply device 50 can drop at a faster rate, so that when the second temperature is low, the power supply device 50 can be controlled to supply power to the light source board 20 in time. In this way, the working safety of the flame simulator 100 can be improved.

[0061] It should be noted that the power supply device 50 may include a battery, which includes battery cells and battery cell protection modules. The battery cell protection module can obtain the working parameters of the battery cells and analyze the working parameters of the battery cells. When the battery has abnormal conditions such as short circuit, overcharge, over-discharge, etc., the battery cell protection module can promptly cut off the charge / discharge circuit of the battery cell to protect the battery cell, thereby protecting the flame simulator 100 and improving the explosion-proof safety of the flame simulator 100.

[0062] Optional, reference Figure 2 The controller 60 is configured to: determine whether the second temperature is greater than the set temperature; if so, control the power supply device 50 to be in a power supply stop state.

[0063] The set temperature may be a fixed value, which may be determined according to the operating parameters of the power supply device 50 or the explosion-proof temperature limit, etc., and is not specifically limited here.

[0064] Specifically, when the second temperature is greater than the set temperature, it means that the current temperature of the power supply device 50 has reached the explosive level. If the power supply device 50 continues to work, the second temperature of the power supply device 50 may continue to rise, thereby igniting the flame simulator 100. In order to avoid this dangerous situation, the power supply device 50 can be controlled to be in a power-off state at this time, that is, the power supply device 50 stops supplying power to the light source board 20 to prevent the power supply device 50 with a higher temperature from becoming the detonation source of the flame simulator 100, and when the power supply device 50 stops supplying power, the heat of the power supply device 50 can be diffused outward in time to reduce the second temperature of the power supply device 50, improve the working safety of the power supply device 50, and the explosion-proof safety of the flame simulator 100.

[0065] It can be understood that a power control module is also provided in the power supply device 50, and the controller 60 can be electrically connected to the power control module in the power supply device 50 to transmit a signal to stop power supply or a signal to start power supply to the power control module. When the power control module receives the signal to stop power supply, it controls the power supply circuit between the power supply device 50 and the light source board 20 to be disconnected. When the power control module receives the signal to start power supply, it controls the power supply circuit between the power supply device 50 and the light source board 20 to be closed.

[0066] Optional, reference Figure 1 The flame simulator 100 also includes a switch signal input terminal 70, which is located outside the housing 10; the controller 60 is also electrically connected to the switch signal input terminal 70, and the controller 60 is also used to determine the required frequency corresponding to the start signal according to the start signal provided by the switch signal input terminal 70, and control the light source board 20 to operate at the required frequency; after the light source board 20 operates at the required frequency, the controller 60 is also used to control the light output frequency of the light beam emitted by the light source board 20 according to the first temperature.

[0067] Among them, the switch signal input terminal 70 may include a button switch, etc., and can be set according to actual needs. In an optional embodiment, the switch signal input terminal 70 includes an intrinsically safe switch. The intrinsically safe switch can limit the energy of the electrical equipment, suppress the occurrence of sparks or explosions, and thus ensure the personal safety of personnel using the flame simulator 100, and improve the safety of the flame simulator 100. By providing a second sealing ring 92 at the threaded connection between the intrinsically safe switch and the housing 10, the protection level of the intrinsically safe switch can reach IP65 or above, preventing external rainwater from entering the interior of the flame simulator 100.

[0068] Specifically, the switch signal input terminal 70 is located outside the housing 10 for user operation. The start signal provided by the switch signal input terminal 70 can be determined according to the number of key presses by the user. Preferably, when the flame simulator 100 is in the off state, the user presses the signal input terminal 70 once, and after the controller 60 receives the start signal corresponding to the action, it will control the power supply device 50 to supply power to the light source board 20, and control the light source board 20 to emit a light beam at a first required frequency; when the flame simulator 100 is in the off state, the user presses the signal input terminal 70 once, and then presses the signal input terminal 70 twice in succession, and after the controller 60 receives the start signal corresponding to the action, it will control the power supply device 50 to supply power to the light source board 20, and control the light source board 20 to emit a light beam at a second required frequency; when the flame simulator 100 is in the off state, the user presses the signal input terminal 70 once, and then keeps pressing the signal input terminal 70 for greater than or equal to a preset time (for example, 30s), and after the controller 60 receives the start signal corresponding to the action, it will control the power supply device 50 to supply power to the light source board 20, and control the light source board 20 to emit a light beam at a third required frequency.

[0069] It should be noted that the first required frequency, the second required frequency and the third required frequency are all different and can be set according to actual needs so that the flame simulator 100 can simulate different flames. For example, the first required frequency is 4 Hz, the second required frequency is 5 Hz, and the third required frequency is 8 Hz, and can also be other frequencies, which are not specifically limited here.

[0070] It is understandable that after the controller 60 controls the light source board 20 to operate at the required frequency corresponding to the start signal, the light frequency of the light beam emitted by the light source board 20 can be controlled in real time according to the first temperature of the light source board 20 to improve the light intensity stability of the light beam emitted by the light source board 20. In addition, the controller 60 can also control the duty cycle of the light beam emitted by the light source board 20 within a unit period according to the first temperature of the light source board 20. If the first temperature is high, the duty cycle of the light beam emitted within the unit period can be lowered. Exemplarily, the current light emission frequency of the light source board 20 is 4Hz, and within one cycle (250ms), the light source board 20 first emits a light beam within the first 100ms, and does not emit a light beam within the last 150ms; when the first temperature is high, the light emission frequency of the light source board 20 is still controlled to be 4Hz, and within one cycle (250ms), the light source board 20 first emits a light beam within the first 80ms, and does not emit a light beam within the last 170ms, so as to reduce the light emission time of the light source board 20 within a unit cycle, improve the heat dissipation effect of the light source board 20, and reduce the temperature of the light source board 20. If the first temperature is low, the duty cycle of the light beam emitted within the unit cycle can be increased, or the light emission frequency of the light beam emitted by the light source board 20 can be increased, etc., which can be set according to actual needs and is not specifically limited here.

[0071] Optional, reference Figure 1 or Figure 2 The flame simulator 100 also includes a rear seat 12 and a rear seat pressure ring 121, the rear seat 12 is located on the side of the power supply device 50 away from the reflective cup 80; a charging port 14 is provided on the rear seat 12; the charging port 14 is electrically connected to the power supply device 50; the rear seat pressure ring 121 is located on the side of the rear seat 12 away from the reflective cup 80, and abuts against the rear seat 12; the outer shell 10 includes a cylinder 13 and a rear cover 123, the cylinder 13 is fixedly connected to the rear seat pressure ring 121, and the cylinder 13 is detachably connected to the rear cover 123.

[0072] The type of the charging port 14 can be set according to actual needs. For example, the charging port 14 is a circular power port, and can also be other types, which are not specifically limited here. The rear seat 12, the rear seat pressure ring 121 and the rear cover 123 can include materials such as aluminum alloy.

[0073] Specifically, by setting a charging port 14 on the rear seat 12, and the rear seat 12 is located on the side of the power supply device 50 away from the reflective cup 80, the distance between the charging port 14 and the power supply device 50 is shortened, the line impedance is reduced, and the charging rate is increased. In addition, a rear seat pressure ring 121 that abuts against the rear seat 12 is also set on the side of the rear seat 12 away from the reflective cup 80 to improve the shock resistance. The side of the cylinder 13 away from the inside of the cylinder can be provided with a thread, and the inner ring of the rear cover 123 can be provided with a thread, so that the cylinder 13 and the rear cover 123 are connected by threads. When it is necessary to charge the power supply device 50, the rear cover 123 can be rotated and removed from the cylinder 13 to expose the charging port 14. In this way, the charging port 14 is set inside the shell 10 to protect the charging port 14, prevent external water vapor or dust from entering the charging port 14, and improve the explosion-proof and protective properties of the flame simulator 100.

[0074] Optional, continue to refer to Figure 1 or Figure 2 The flame simulator 100 further includes a charging indicator light 140, and the user can determine the charging state of the power supply device 50 by the light color of the charging indicator light 140. For example, if the charging indicator light 140 is green, it means that the power supply device 50 is currently in a charging state, and if the charging indicator light 140 is red, it means that the power supply device 50 is fully charged, so as to remind the user to stop charging the flame simulator 100.

[0075] Optional, reference Figure 1 or Figure 2 The housing 10 includes a front cover 11 and a barrel 13; the front cover 11 includes an opening 110 and a boss 111 surrounding the opening 110; the boss 111 abuts against the light-transmitting plate 30; along the extension direction of the barrel 13, the light-transmitting plate 30 overlaps with the opening 110; the barrel 13 is fixedly connected to the front cover 11.

[0076] The front cover 11 and the barrel 13 may include aluminum alloy material. The outer surfaces of the front cover 11 and the barrel 13 are sprayed with an anti-rust coating to achieve the effects of rust prevention and oxidation prevention.

[0077] Specifically, the front cover 11 and the barrel 13 are both cylindrical, and an opening 110 is provided at the front end of the front cover 11, and the light-transmitting plate 30 overlaps with the opening 110 in the extension direction of the barrel 13, so that the light beam emitted from the light-transmitting plate 30 can be emitted from the opening 110. A boss 111 surrounding the opening 110 is provided in the front cover 11, and after a colloid such as epoxy resin glue, polyurethane glue, silicone or RTV silicone rubber is coated on the boss 111, the light-transmitting plate 30 can be connected to the boss 111 through the colloid, and then a reflective cup 80 is provided on the side of the light-transmitting plate 30 away from the boss 111, and the reflective cup 80 abuts against the light-transmitting plate 30 to improve the position stability of the light-transmitting plate 30. A thread can be provided on the surface of the barrel 13 away from the reflective cup 80, and a thread can be provided on the side of the front cover 11 close to the barrel 13, so that the front cover 11 and the barrel 13 are connected by threads.

[0078] Preferably, the light-transmitting plate 30 is made of alumina, so that the light-transmitting plate 30 has extremely high mechanical strength and high light transmittance, which can meet the requirements for shell strength in explosion-proof requirements, and reduce the light intensity loss of the outgoing light beam to ensure the outgoing light intensity. The light-transmitting plate 30 can be prepared by processes such as high-gloss grinding to improve the smoothness of the incident surface and the light-emitting surface of the light-transmitting plate 30, thereby improving the light transmittance; the thickness of the light-transmitting plate 30 can also be adjusted to ensure the light transmittance. The above-mentioned adjustments to the smoothness or thickness are all performed on the premise that the light-transmitting plate 30 can meet the explosion-proof requirements. In addition, the light beam incident surface and / or light-emitting surface of the light-transmitting plate 30 can be coated by a coating process to improve or change the transmittance of the light beam.

[0079] In other optional embodiments, along the extension direction of the cylinder 13, a threaded hole is provided on the side of the front cover 11 away from the boss 111, and an explosion-proof screw 31 can be screwed into the threaded hole to improve the fixing reliability of the front cover 11 and the cylinder 13. The overall compressive strength of the housing 10 is greater than 2MPa to improve the explosion-proof performance.

[0080] It should be noted that the reference Figure 1Before the front cover 11 and the cylinder 13 are fixed by threads, a first sealing ring 91 is placed at the connection between the cylinder 13 and the front cover 11; before the rear cover 123 and the cylinder 13 are fixed by threads, a third sealing ring 93 is placed at the connection between the cylinder 13 and the rear cover 123; before the switch signal input terminal 70 and the cylinder 13 are fixed by threads, a second sealing ring 92 is placed at the connection between the cylinder 13 and the switch signal input terminal 70; and then the above components are screwed and tightened to improve the sealing of the flame simulator 100, prevent external flammable gas or water vapor from entering the flame simulator 100, and improve the working safety of the flame simulator 100.

[0081] Optional, Figure 3 A structural diagram of another flame simulator applied to a flame detector provided by an embodiment of the present invention is shown in FIG. Figure 3 As shown, the flame simulator 100 further includes a handle 90 , which is detachably connected to the housing 10 .

[0082] Specifically, the handle 90 and the housing 10 can be fixed by screws with threads, and the use convenience of the flame simulator 100 and the user's convenience of taking the flame simulator 100 are improved by providing the handle 90. The handle 90 and the housing 10 are provided to be detachably connected, so that when the handle 90 is not needed, the handle 90 can be removed, so that the flame simulator 100 can be matched with other components to realize more functions, thereby improving the scalability of the flame simulator 100.

[0083] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A flame simulator applied to a flame detector, characterized in that: include: shell; A reflective cup is located inside the housing; the reflective cup comprises a cup body, and a cup bottom and a cup mouth located on opposite sides of the cup body; the cup bottom is provided with a light-through hole; A light source plate, wherein the light emitting surface of the light source plate is located in the light through hole and faces the cup mouth; A light-transmitting plate, located on a side of the cup mouth away from the cup bottom; A first temperature detection device is located on a surface of the light source plate that is away from the reflective cup; The first temperature detector is used to obtain a first temperature of the light source board; A power supply device, located on a side of the light source plate away from the reflective cup; A controller, located on a side of the light source plate away from the reflective cup; The controller is electrically connected to the power supply device, the first temperature detection device and the light source board respectively, and is used to control the light frequency of the light beam emitted by the light source board according to the first temperature.

2. The flame simulator according to claim 1, characterized in that: The controller is configured to: Determine whether the absolute value of the difference between the first temperature and the preset temperature is greater than the preset difference; If so, the first light emitting frequency of the light source panel is determined according to the current temperature difference between the first temperature and the preset temperature, and the light source panel is controlled to operate at the first light emitting frequency.

3. The flame simulator according to claim 2, characterized in that: The controller is specifically configured as follows: Based on the mapping relationship between the temperature difference and the set frequency, the set frequency corresponding to the current temperature difference is determined as the first light output frequency.

4. The flame simulator according to claim 1, characterized in that: Also includes: A second temperature detection device is attached to the power supply device; the second temperature detection device is used to obtain a second temperature of the power supply device; The controller is also electrically connected to the second temperature detection device, and the controller is also used to control the power supply state of the power supply device according to the second temperature.

5. The flame simulator according to claim 4, characterized in that: The controller is configured to: Determining whether the second temperature is greater than a set temperature; If so, the power supply device is controlled to be in a power supply stop state.

6. The flame simulator according to claim 1, characterized in that: Also includes: A switch signal input terminal is located outside the housing; The controller is also electrically connected to the switch signal input terminal, and is also used to determine the required frequency corresponding to the start signal according to the start signal provided by the switch signal input terminal, and control the light source board to operate at the required frequency; after the light source board operates at the required frequency, the controller is also used to control the light output frequency of the light beam emitted by the light source board according to the first temperature.

7. The flame simulator according to claim 6, characterized in that: The switch signal input terminal includes an intrinsically safe switch.

8. The flame simulator according to claim 1, characterized in that: Also includes: The rear seat is located on a side of the power supply device away from the reflective cup; the rear seat is provided with a charging port; the charging port is electrically connected to the power supply device; A rear seat pressure ring is located at a side of the rear seat away from the reflective cup and abuts against the rear seat; The shell comprises a cylinder and a rear cover, wherein the cylinder is fixedly connected to the rear seat pressure ring, and the rear cover is detachably connected to the cylinder.

9. The flame simulator according to claim 1, characterized in that: The housing comprises a front cover and a cylinder; The front cover comprises an opening and a boss surrounding the opening; the boss abuts against the light-transmitting plate; along the extension direction of the cylinder, the light-transmitting plate overlaps with the opening; The cylinder is fixedly connected to the front cover.

10. The flame simulator according to claim 1, characterized in that: Also includes: A handle is detachably connected to the shell.

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