Multi-parameter fusion fire detector automatic calibration device and method

Abstract

The invention relates to a multi-parameter fusion fire detector automatic calibration device and method, and the device comprises a device table, the top of the device table is provided with a calibration assembly, the calibration assembly comprises a calibration box fixed to the top surface of the device table, an opening in one side of the calibration box is in sealed sliding connection with a frame body, and a sealing plate can be attached to one side of the frame body; a detector body is installed on one side of the sealing plate, the other side of the sealing plate is in butt joint with the output end of an electric push rod installed on the top of the device table, the sealing plate, the frame body and the calibration box are connected with a pull-back assembly, the pull-back assembly is used for connecting the sealing plate and the frame body after attachment, and an air guide assembly is installed at the bottom end of the frame body. The detector is convenient to mount and dismount through the calibration assembly, complex operation in a narrow box body is not needed, mounting can be completed through simple butt joint, dismounting is very convenient, damage caused by space limitation and part touch is effectively avoided, and operation efficiency and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic calibration, and in particular to a multi-parameter fusion fire detector automatic calibration device and method. Background Art

[0002] Fire detectors are core equipment in the field of fire safety. By integrating parameter sensing technologies such as temperature, CO gas generated by combustion, and infrared / ultraviolet radiation, they can achieve early identification and accurate warning of fire hazards. Automatic calibration of fire detectors is a key link to ensure their long-term reliable operation. For example, dust accumulation causes optical path attenuation of photoelectric smoke detectors, and temperature and humidity changes affect the resistance value of semiconductor gas sensors.

[0003] The existing multi-parameter fusion fire detector automatic calibration device needs to have temperature changes, automatic introduction and exhaust of CO, and infrared / ultraviolet radiation. However, after searching, it was found that the existing calibration device has certain inconveniences when performing calibration. For example, the fire detector needs to be installed inside the test box during calibration. The internal space of the box is not large, which makes installation and disassembly inconvenient. There are many parts that are easily damaged by touching. Secondly, the introduction and exhaust of CO gas mostly require manual operation, and the opening and closing of the inlet and outlet valves, as well as the air pump for gas guidance, all require manual operation, and the degree of automation is low.

[0004] Therefore, it is particularly necessary to design a multi-parameter fusion fire detector automatic calibration device and method to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-parameter fusion fire detector automatic calibration device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides a multi-parameter fusion fire detector automatic calibration device, including: a device table, a calibration component is provided on the top of the device table, the calibration component includes a calibration box fixed on the top surface of the device table, one side of the calibration box is opened and sealed and slidably connected to a frame, a sealing plate can be fitted on one side of the frame, the detector body is installed on one side of the sealing plate, and the other side of the sealing plate is connected to the output end of the electric push rod installed on the top of the device table, the sealing plate, the frame and the calibration box are connected with a pullback component, the pullback component is used to connect the sealing plate and the frame after fitting, and an air guide component is installed at the bottom of the frame, the air guide component is used to automatically guide and exhaust the inside of the calibration box when the sealing plate and the frame move, and the pullback component is connected to the calibration box with an exhaust component, which is used to open the exhaust port for exhaust when the frame moves to the outside of the calibration box.

[0007] Preferably, the pullback assembly includes a U-shaped plate fixed to the side end of the calibration box, with sliding openings on both sides of the U-shaped plate, a cylinder sliding in the sliding opening, the cylinder fixed to the side end of the block, and the slider on one side of the block slides in the slideway at the side end of the closing plate, an insertion rod is fixed to the bottom of the block, and slots are provided on both sides of the frame body, and when the closing plate and the frame body are fitted together, the insertion rod can be inserted into the slot;

[0008] The slide is divided into two sections, high and low, by an inclined section.

[0009] Preferably, the gas guide assembly includes a CO2 manufacturing machine located at the lower end of the device table, the top output end of the CO2 manufacturing machine is connected to a one-way valve tube 1, the one-way valve tube 1 is connected to the outer wall of the gas cylinder, and the outer wall of the gas cylinder and the calibration box are connected by a one-way valve tube 2, a piston valve rod is slidably installed at one end of the gas cylinder, the piston valve rod is fixed on one side of the moving block, the top of the moving block is connected to the bottom edge of the frame through a connecting rod, and the connecting rod moves in the opening of the device table.

[0010] Preferably, a return spring is connected to one side of the moving block, the return spring is fixed to the bottom end of the device table, and the moving block is in contact with the abutment block at the bottom of the device table;

[0011] When the moving block is in contact with the abutting block, one end of the frame body located inside the calibration box is close to the opening of the calibration box.

[0012] Preferably, the exhaust assembly includes a sliding plate that fits the inner top surface of the calibration box, and an exhaust port is provided on the top of the calibration box above the sliding plate. A small fan is installed above the exhaust port, and the small fan is connected to the input end of the CO recovery box.

[0013] Preferably, a row of guide rods are fixed on the inner wall of the exhaust port, and the guide rods pass through the sliding holes of the vertical thin plate. One end of the vertical thin plate is connected to a long thin rod, and the long thin rod passes through one end of the calibration box from one side of the exhaust port, and the long thin rod also slides through the protrusion fixed on the top of the U-shaped plate. A reset block is fixed to the outside of the long thin rod, and the reset block is located between the protrusion and the sealing plate.

[0014] Preferably, the mounting block at one end of the detector body is fixedly connected to the mounting block of the threaded head by screws, and the threaded head is threadedly connected to the threaded groove on one side of the sealing plate.

[0015] Preferably, two balls are symmetrically mounted at both ends of the bottom of the sealing plate, and the balls roll on the surface of the device table.

[0016] The present invention also provides a method for automatically calibrating a multi-parameter fusion fire detector, comprising:

[0017] S1. Device preparation and detector installation:

[0018] Fix the mounting block at one end of the detector body to be calibrated with the mounting block of the threaded head by screws, and then connect the threaded head with the threaded groove on one side of the sealing plate to complete the installation of the detector body on the sealing plate. During the installation process, pay attention to the firm connection to prevent loosening during the experiment.

[0019] S2. Calibration experiment operation:

[0020] Start the electric push rod to move the sealing plate. The ball bearings at the bottom of the sealing plate roll on the surface of the device table to improve the movement stability. The sealing plate moves and contacts the frame, forcing it to move into the calibration box. After moving to the maximum position, it pushes the sliding plate. The plug rod of the pullback assembly is inserted into the slot during the movement of the frame to connect the sealing plate and the frame. At the same time, the frame blocks the opening of the calibration box to form a closed structure. The movement of the frame drives the piston valve stem of the gas guide assembly to slide in the gas cylinder to generate negative pressure. The CO gas generated by the CO generator is introduced into the calibration box through the one-way valve pipe 2 to reach the concentration required for calibration. At the same time, the heating device and the ultraviolet light structure are started to simulate the fire environment. The detector is calibrated and tested under the set conditions and the data is recorded.

[0021] S3. End of experiment and reset:

[0022] After the test is completed, the heating device and the ultraviolet light structure are turned off, the electric push rod drives the sealing plate to move, the frame is pulled out of the calibration box a short distance, exposing the exhaust port, and the small fan sucks the CO gas in the calibration box into the CO recovery box. The sealing plate and the frame continue to move back. When separated, the reset spring of the gas guide component completely resets the frame, the gas cylinder is filled with gas, and when the sealing plate is completely reset, the reset block of the exhaust component is pushed to reset the sliding plate, blocking the exhaust port. The device returns to its initial state and prepares for the next experiment.

[0023] The beneficial effects of the present invention are:

[0024] 1. The detector can be easily installed and disassembled through calibration components. There is no need to perform complicated operations inside the narrow box. Installation can be completed through simple docking. Disassembly is also very convenient, effectively avoiding damage caused by space limitations and component contact, and improving operational efficiency and safety.

[0025] 2. The design of the gas guide and exhaust components improves the automation of CO gas introduction and exhaust: The device automatically completes the introduction and exhaust of CO gas, eliminating the need for manual operation of the inlet and outlet valves and gas guide pump. The automated gas control process not only simplifies the operation steps, but also improves the accuracy and stability of gas concentration control, ensuring the consistency of the calibration environment.

[0026] 3. Through the automated coordination of various components, manual intervention and operation time are reduced, greatly improving calibration efficiency. At the same time, the stable and reliable calibration environment ensures calibration quality, enabling fire detectors to more accurately detect fire conditions after being put into use, enhancing fire prevention and control capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and examples.

[0028] Figure 1 The present invention is a multi-parameter fusion fire detector automatic calibration device and method of the overall three-dimensional Figure 1 ;

[0029] Figure 2 The present invention is a multi-parameter fusion fire detector automatic calibration device and method of the overall three-dimensional Figure 2 ;

[0030] Figure 3 This is an overall three-dimensional cross-sectional view of a multi-parameter fusion fire detector automatic calibration device and method of the present invention;

[0031] Figure 4 A partial stereoscopic diagram of a multi-parameter fusion fire detector automatic calibration device and method according to the present invention;

[0032] Figure 5 This is an overall front cross-sectional view of a multi-parameter fusion fire detector automatic calibration device and method of the present invention;

[0033] Figure 6 The present invention is a multi-parameter fusion fire detector automatic calibration device and method of the pull-back component stereo Figure 1 ;

[0034] Figure 7 The present invention is a multi-parameter fusion fire detector automatic calibration device and method of the pull-back component stereo Figure 2 ;

[0035] Figure 8 A perspective view of an exhaust assembly of a multi-parameter fusion fire detector automatic calibration device and method according to the present invention;

[0036] Figure 9 This is a three-dimensional diagram of the gas guide component of the multi-parameter fusion fire detector automatic calibration device and method of the present invention.

[0037] In the picture:

[0038] 1. Device table; 2. Calibration assembly; 21. Calibration box; 22. Frame; 23. Electric push rod; 24. Sealing plate; 25. Detector body; 26. Threaded head; 3. Pullback assembly; 31. U-shaped plate; 32. Slide; 33. Cylinder; 34. Block; 35. Slider; 36. Insert rod; 37. Slot; 4. Gas guide assembly; 41. CO2 generator; 42. One-way valve tube 1; 43. Gas cylinder; 44. One-way valve tube 2; 45. Piston valve stem; 46. Moving block; 47. Reset spring; 48. Stop block; 5. Exhaust assembly; 51. Sliding plate; 52. Vertical thin plate; 53. Guide rod; 54. Small fan; 55. CO2 recovery box; 56. Long thin rod; 57. Reset block; 311. Bump. DETAILED DESCRIPTION

[0039] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0040] like Figures 1-9 As shown, a multi-parameter fusion fire detector automatic calibration device of the present invention is provided on a device platform 1, and a calibration component 2 is provided on the top of the device platform 1. The calibration component 2 includes a calibration box 21 fixed on the top surface of the device platform 1, and an opening on one side of the calibration box 21 is sealed and slidably connected to a frame 22. A heating device and an ultraviolet light structure are also installed inside the frame 22. This is an existing conventional design, not shown in the figure. A sealing plate 24 can be attached to one side of the frame 22, and a detector body 25 is installed on one side of the sealing plate 24. The other side of the sealing plate 24 is connected to the The output end of the electric push rod 23 installed on the top of the device table 1 is docked, and the closing plate 24, the frame 22 and the calibration box 21 are connected with a pullback component 3. The pullback component 3 is used to connect the closing plate 24 and the frame 22 after fitting. The bottom end of the frame 22 is installed with an air guide component 4. The air guide component 4 is used to automatically guide and exhaust the inside of the calibration box 21 when the closing plate 24 and the frame 22 move. The pullback component 3 and the calibration box 21 are connected with an exhaust component 5, which is used to open the exhaust port for exhaust when the frame 22 moves to the outside of the calibration box 21.

[0041] Through the design of the calibration component 2, when the present invention conducts a calibration experiment, the detector body 25 is installed on one side of the sealing plate 24, and then the electric push rod 23 is started to move the sealing plate 24. The sealing plate 24 contacts the frame 22 to force it to move into the calibration box 21. At this time, the sealing plate 24, the frame 22 and the calibration box 21 form a closed structure, and the internal heating device and ultraviolet light are started. During the movement, the pullback component 3 connects the sealing plate 24 and the frame 22, and at the same time, CO gas is automatically introduced into the calibration box 21 through the gas guide component 4 to perform a calibration test. After the test is completed, the sealing plate 24 is reset and the frame 22 is pulled out through the pullback component 3. At the same time, the exhaust component 5 opens the exhaust port to exhaust when the frame 22 moves to the outside of the calibration box 21 to complete a detection and calibration experiment. The verification process is an existing conventional design, and the present invention does not describe it in detail.

[0042] The pullback assembly 3 includes a U-shaped plate 31 fixed to the side end of the calibration box 21, and a slide 32 is provided on both sides of the U-shaped plate 31. A cylinder 33 slides in the slide 32, and the cylinder 33 is fixed to the side end of the block 34. A slider 35 on one side of the block 34 slides in the slideway at the side end of the sealing plate 24. An insertion rod 36 is fixed to the bottom of the block 34, and slots 37 are provided on both sides of the frame 22. When the sealing plate 24 and the frame 22 are fitted together, the insertion rod 36 can be inserted into the slot 37. The slide 32 is divided into two sections, high and low, by an inclined section. It should be noted that when the slot 37 contacts the outer wall of the calibration box 21, the sealing plate 24 and the frame 22 move to the maximum position inside the calibration box 21;

[0043] Furthermore, through the design of the pullback component 3, when the sealing plate 24 moves and contacts the frame 22, forcing the frame 22 to move into the calibration box 21, the block 34 drives the cylinder 33 fixed at its side end to slide in the sliding openings 32 on both sides of the U-shaped plate 31. Since the sliding mouth 32 is divided into two sections, high and low, by an inclined section, during the fitting process of the sealing plate 24 and the frame 22, the cylinder 33 slides along the inclined section of the sliding mouth 32, so that the block 34 drives the insertion rod 36 to move downward by its own sliding, and the insertion rod 36 can be inserted into the slots 37 on both sides of the frame 22, thereby connecting the sealing plate 24 and the frame 22. When the inspection is completed, the sealing plate 24 is reset. At this time, the cylinder 33 slides in the opposite direction in the sliding mouth 32, driving the block 34 to move, and then the frame 22 is pulled out of the calibration box 21 through the insertion rod 36. Finally, it can be separated again through the inclined section to carry out the next calibration experiment (note that when separating, the frame 22 is still a short distance away from the initial position, and is completely reset through the gas guide component 4, and before separation, the CO gas is exhausted and the heating device and ultraviolet light are turned off).

[0044] The gas guide assembly 4 includes a CO2 manufacturing machine 41 located at the lower end of the device table 1. The top output end of the CO2 manufacturing machine 41 is connected to a one-way valve tube 42, which is connected to the outer wall of the gas cylinder 43. The one-way valve tube 42 can only input gas into the gas cylinder 43, and the outer wall of the gas cylinder 43 is connected to the calibration box 21 with a one-way valve tube 24. The one-way valve tube 244 can only guide the gas from the gas cylinder 43 out. A piston valve rod 45 is slidably installed at one end of the gas cylinder 43. The piston valve rod 45 is fixed to one side of the moving block 46. The top of the moving block 46 is connected to the bottom edge of the frame 22 through a connecting rod, and the connecting rod moves in the opening of the device table 1. A return spring 47 is connected to one side of the moving block 46. The return spring 47 is fixed to the bottom end of the device table 1, and the moving block 46 is in contact with the block 48 at the bottom of the device table 1. When the moving block 46 is in contact with the block 48, the end of the frame 22 located inside the calibration box 21 is close to the opening of the calibration box 21.

[0045] Through the design of the gas guide component 4, when the sealing plate 24 moves and contacts the frame 22, and presses the frame 22 to move into the calibration box 21, the bottom edge position of the frame 22 drives the moving block 46 connected to it through the connecting rod to move. The moving block 46 pulls the piston valve stem 45 fixed on one side of it to slide in the gas cylinder 43, and at this time a negative pressure is generated in the gas cylinder 43. Due to the one-way conduction characteristics of the one-way valve tube 1 42 and the one-way valve tube 2 44, the CO gas generated by the CO manufacturing machine 41 enters the gas cylinder 43 through the one-way valve tube 1 42, and is then automatically introduced into the calibration box 21 through the one-way valve tube 2 44. Through reasonable parameter design, the sealing plate 24 and the frame 22 move to the maximum position inside the calibration box 21, and the concentration required for calibration can be achieved. When the detection is completed, the electric push rod 23 drives the sealing plate 24 to move, and the frame 22 is pulled out of the calibration box 21 under the action of the pullback component 3. The piston valve stem 45 moves in the opposite direction, and the one-way valve tube 45 moves in the opposite direction. Valve tube 1 42 can absorb the CO produced by the CO manufacturing machine 41 into the gas cylinder 43. It should be noted that the reset spring 47 is used to maintain the tightness of the sealing plate 24 and the frame 22 when they move into the calibration box 21. At this time, they are in a stretched state, and when they are separated, when the sealing plate 24 and the frame 22 are separated, the frame 22 is still a short distance away from the initial position, and can be completely reset by the reset spring 47, so that the gas cylinder 43 is filled with gas. The gas cylinder 43 is fixed on the top of the CO manufacturing machine 41, and the stop block 48 is used to limit the position to prevent the frame 22 from separating from the calibration box 21.

[0046] The exhaust assembly 5 includes a sliding plate 51 that fits the inner top surface of the calibration box 21. The top of the calibration box 21 is provided with an exhaust port above the sliding plate 51, and a small fan 54 is installed above the exhaust port. The output end of the small fan 54 is connected to the input end of the CO recovery box 55. The small fan 54 can be continuously started at the beginning of the continuous experiment. It does not matter. The power loss generated during the continuous experiment is small and negligible. A row of guide rods 53 are fixed on the inner wall of the exhaust port. The guide rods 53 pass through the sliding holes of the vertical thin plate 52. One end of the vertical thin plate 52 is connected to a long thin rod 56. The long thin rod 56 passes through one end of the calibration box 21 from one side of the exhaust port, and the long thin rod 56 also slides through the protrusion 311 fixed on the top of the U-shaped plate 31. A reset block 57 is fixed to the outside of the long thin rod 56. The reset block 57 is located between the protrusion 311 and the sealing plate 24. When the sealing plate 24 is completely reset, it can push the reset block 57 to contact the protrusion 311, driving the sliding plate 51 to reset and block the exhaust port again.

[0047] Through the design of the exhaust component 5, when conducting a calibration experiment, the slot 37 contacts the outer end of the calibration box 21, and the sealing plate 24 and the frame 22 move into the calibration box 21 to the maximum position. At this time, the frame 22 pushes the sliding plate 51 through contact, and the long thin rod 56 slides in the circular hole of the protrusion 311, and the frame 22 can block the exhaust port. After the experiment is completed, the ultraviolet lamp and the temperature device are turned off first, and the frame 22 moves outward a short distance, enough to open the exhaust port. At this time, the small fan 54 draws the CO gas inside the calibration box 21 through the exhaust port and transports it to the CO recovery box 55 for recovery. After a period of time, the sealing plate 24 and the frame 22 continue to move back. When the sealing plate 24 is completely reset, it will push the reset block 57 to contact the protrusion 311. The reset block 57 is pushed by the sealing plate 24, driving the long thin rod 56 to move in the opposite direction, and the long thin rod 56 then pulls the vertical thin plate 52 and the sliding plate 51 to reset, blocking the exhaust port again, and preparing for the next calibration experiment.

[0048] The mounting block at one end of the detector body 25 is fixedly connected to the mounting block of the threaded head 26 by screws, and the threaded head 26 is threadedly connected to the threaded groove on one side of the sealing plate 24, which facilitates the installation of the detector body 25. Two balls 27 are symmetrically installed at both ends of the bottom of the sealing plate 24. The balls 27 roll on the surface of the device table 1 to improve the movement stability of the sealing plate 24. The balls 27 are located on both sides of the connecting rod at the top of the moving block 46.

[0049] The present invention also provides a method for automatically calibrating a multi-parameter fusion fire detector, comprising:

[0050] S1. Device preparation and detector installation:

[0051] Fix the mounting block at one end of the detector body 25 to be calibrated with the mounting block of the threaded head 26 by screws, and then connect the threaded head 26 with the threaded groove on one side of the sealing plate 24 to complete the installation of the detector body 25 on the sealing plate 24. During the installation process, pay attention to the firm connection to prevent loosening during the experiment.

[0052] S2. Calibration experiment operation:

[0053] Start the electric push rod 4 to push the sealing plate 3 to move, and the ball at the bottom of the sealing plate 3 rolls on the surface of the device table 1 to improve the movement stability. The sealing plate 3 moves to contact the frame 5, forcing it to move into the calibration box 2. After moving to the maximum position, it pushes the sliding plate 83, and the insertion rod 61 of the pull-back component 6 is inserted into the slot 62 during the movement of the frame 5 to connect the sealing plate 3 and the frame 5. At the same time, the frame 5 blocks the opening of the calibration box 2 to form a closed structure. The movement of the frame 5 drives the piston valve stem 71 of the gas guide component 7 to slide in the gas cylinder 72 to generate negative pressure. The CO gas generated by the CO manufacturing machine 11 is introduced into the calibration box 2 through the one-way valve pipe 44 to reach the concentration required for calibration. At the same time, the heating device 9 and the ultraviolet light structure 10 are started to simulate the fire environment. The detector is calibrated and tested under the set conditions and the data is recorded.

[0054] S3. End of experiment and reset:

[0055] After the test is completed, the heating device 9 and the ultraviolet light structure 10 are turned off, the electric push rod 4 drives the sealing plate 3 to move, the frame 5 is pulled out of the calibration box 2 a short distance, exposing the exhaust port, and the small fan 12 sucks the CO gas in the calibration box 2 into the CO recovery box 13. The sealing plate 3 and the frame 5 continue to move back. When separated, the reset spring 74 of the gas guide component 7 completely resets the frame 5, and the gas cylinder 72 is filled with gas. When the sealing plate 3 is completely reset, the reset block 81 of the exhaust component 8 is pushed to reset the sliding plate 82, blocking the exhaust port 83, and the device returns to its initial state to prepare for the next experiment.

[0056] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A multi-parameter fusion fire detector automatic calibration device, characterized in that: include: An apparatus platform (1), wherein a calibration component (2) is provided on the top of the apparatus platform (1); The calibration assembly (2) comprises a calibration box (21) fixed on the top surface of the device table (1), one side of the calibration box (21) is opened and sealed and slidably connected to a frame (22), one side of the frame (22) can be fitted with a sealing plate (24), one side of the sealing plate (24) is mounted with a detector body (25), and the other side of the sealing plate (24) is docked with the output end of an electric push rod (23) mounted on the top of the device table (1); The sealing plate (24), the frame (22) and the calibration box (21) are connected with a pull-back assembly (3), and the pull-back assembly (3) is used to connect the sealing plate (24) and the frame (22) after lamination; An air guide assembly (4) is installed at the bottom end of the frame (22). The air guide assembly (4) is used to automatically guide and exhaust air inside the calibration box (21) when the sealing plate (24) and the frame (22) move. The pull-back assembly (3) and the calibration box (21) are connected to an exhaust assembly (5) for opening an exhaust port to exhaust air when the frame (22) moves toward the outside of the calibration box (21).

2. The multi-parameter fusion fire detector automatic calibration device according to claim 1, characterized in that: The pullback assembly (3) includes a U-shaped plate (31) fixed to the side end of the calibration box (21), and a sliding opening (32) is provided on both sides of the U-shaped plate (31), a cylinder (33) slides in the sliding opening (32), and the cylinder (33) is fixed to the side end of the block (34), and a slider (35) on one side of the block (34) slides in a slideway on the side end of the sealing plate (24), and an insertion rod (36) is fixed to the bottom of the block (34), and slots (37) are provided on both sides of the frame (22), and when the sealing plate (24) and the frame (22) are fitted together, the insertion rod (36) can be inserted into the slot; The sliding opening (32) is divided into two sections, a high section and a low section, by an inclined section.

3. The multi-parameter fusion fire detector automatic calibration device according to claim 2, characterized in that: The gas guide assembly (4) includes a CO2 generator (41) located at the lower end of the device platform (1), the top output end of the CO2 generator (41) is connected to a one-way valve pipe (42), the one-way valve pipe (42) is docked with the outer wall of the gas cylinder (43), and the outer wall of the gas cylinder (43) is connected to the calibration box (21) by a one-way valve pipe (44), one end of the gas cylinder (43) is slidably mounted with a piston valve rod (45), the piston valve rod (45) is fixed to one side of a moving block (46), the top of the moving block (46) is docked with the bottom edge of the frame (22) through a connecting rod, and the connecting rod moves in the opening of the device platform (1).

4. The multi-parameter fusion fire detector automatic calibration device according to claim 3, characterized in that: One side of the moving block (46) is connected to a return spring (47), the return spring (47) is fixed to the bottom end of the device platform (1), and the moving block (46) is in contact with the stop block (48) at the bottom of the device platform (1); When the moving block (46) is fitted with the abutting block (48), one end of the frame (22) located inside the calibration box (21) is close to the opening of the calibration box (21).

5. The multi-parameter fusion fire detector automatic calibration device according to claim 4, characterized in that: The exhaust assembly (5) includes a sliding plate (51) that fits against the inner top surface of the calibration box (21); an exhaust port is provided on the top of the calibration box (21) above the sliding plate (51); a small fan (54) is installed above the exhaust port; and the small fan (54) is connected to the input end of the CO recovery box (55).

6. The multi-parameter fusion fire detector automatic calibration device according to claim 5, characterized in that: A row of guide rods (53) is fixed on the inner wall of the exhaust port, and the guide rods (53) pass through the sliding holes of the vertical thin plate (52). One end of the vertical thin plate (52) is connected to a long thin rod (56). The long thin rod (56) passes through one end of the calibration box (21) from one side of the exhaust port, and the long thin rod (56) also passes through a protrusion (311) fixed on the top of the U-shaped plate (31) to slide. A reset block (57) is fixed on the outside of the long thin rod (56), and the reset block (57) is located between the protrusion (311) and the sealing plate (24).

7. The multi-parameter fusion fire detector automatic calibration device according to claim 6, characterized in that: The mounting block at one end of the detector body (25) is fixedly connected to the mounting block of the threaded head (26) by screws, and the threaded head (26) is threadedly connected to the threaded groove on one side of the sealing plate (24).

8. The multi-parameter fusion fire detector automatic calibration device according to claim 1, characterized in that: Two balls (27) are symmetrically mounted at both ends of the bottom of the sealing plate (24), and the balls (27) roll on the surface of the device platform (1).

9. The method for automatically calibrating a fire detector using multi-parameter fusion according to any one of claims 1 to 8, characterized in that: The method of use comprises the following steps: S1. Device preparation and detector installation: The mounting block at one end of the detector body (25) to be calibrated is fixedly connected to the mounting block of the threaded head (26) by screws, and then the threaded head (26) is threadedly connected to the threaded groove on one side of the sealing plate (24) to complete the installation of the detector body (25) on the sealing plate (24). During the installation process, attention should be paid to the connection being firm to prevent loosening during the experiment. S2. Calibration experiment operation: The electric push rod (4) is started to push the sealing plate (3) to move. The ball bearing at the bottom of the sealing plate (3) rolls on the surface of the device table (1) to improve the movement stability. The sealing plate (3) moves to contact the frame (5), forcing it to move into the calibration box (2). After moving to the maximum position, the sliding plate (83) is pushed. The insertion rod (61) of the pull-back component (6) is inserted into the slot (62) during the movement of the frame (5), connecting the sealing plate (3) and the frame (5). At the same time, the frame (5) blocks the opening of the calibration box (2) to form a closed structure. The movement of the frame (5) drives the piston valve rod (71) of the gas guide component (7) to slide in the gas cylinder (72), generating negative pressure. The CO gas generated by the CO manufacturing machine (11) is introduced into the calibration box (2) through the one-way valve pipe (44) to reach the concentration required for calibration. At the same time, the heating device (9) and the ultraviolet light structure (10) are started to simulate the fire environment. The detector is calibrated and tested under the set conditions and the data is recorded. S3. End of experiment and reset: After the test is completed, the heating device (9) and the ultraviolet light structure (10) are turned off, the electric push rod (4) drives the sealing plate (3) to move, the frame (5) is pulled out of the calibration box (2) for a short distance, exposing the exhaust port, and the small fan (12) sucks the CO gas in the calibration box (2) into the CO recovery box (13), the sealing plate (3) and the frame (5) continue to move back, and when separated, the reset spring (74) of the gas guide component (7) completely resets the frame (5), the gas cylinder (72) is filled with gas, and when the sealing plate (3) is completely reset, the reset block (81) of the exhaust component (8) is pushed to reset the sliding plate (82) and block the exhaust port (83). The device returns to its initial state and prepares for the next experiment.

Images