Ignition combustion testing device

Abstract

The utility model relates to an ignition combustion testing device which comprises an ignition gas pipe, a supporting rod, a lifting assembly and a gas supply assembly. An igniter is arranged on the ignition gas pipe; the igniter is matched with the electric wire to generate electric sparks at a gas outlet in the lower end of the ignition gas pipe to ignite combustible gas sprayed downwards by the ignition gas pipe; the ignition combustion testing device is ingenious in structural design, the vertically-arranged ignition gas pipe is connected with the lifting assembly through the supporting rod, gas at an outlet in the lower end of the ignition gas pipe is perpendicularly and downwards jetted all the time, an operator does not need to manually fix the ignition gas pipe, position deviation or angle inclination of the ignition gas pipe can be avoided, and the ignition combustion efficiency is improved. Shaking during ignition operation of the handheld ignition gas pipe can be avoided, and the stability of the flame jetting direction, height and position is ensured; and the igniter is controlled to be matched with the electric wire to generate sparking, so that gas can be automatically ignited, manual ignition is not needed, and flame intensity fluctuation caused by manual operation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fire burning test device, more particularly to a kind of ignition combustion test device. BACKGROUND

[0002] According to the relevant standard of GB 17945-2010 and GB 4717-2024. In the combustion test of fire emergency lighting and evacuation indicating system, a pipe with a diameter of 2mm±1mm at the end needs to be inserted into the combustion cylinder and sprayed to ignite the sample in the combustion cylinder. The sample is generally propane mixed with air. When the pipe is inserted vertically, the fuel supply needs to be adjusted to make the flame spray 16mm±4mm vertically downward from the outlet of the pipe;

[0003] The current combustion test device is a heat-resistant glass cylinder vertically fixed on the base and can introduce oxygen-containing mixed gas. The sample is ignited by inserting a pipe with a diameter of 2mm±1mm at the end into the combustion cylinder and spraying to ignite the sample. However, such combustion test device still has some drawbacks: during the ignition process, the igniter needs to be manually held by hand to ignite the sample pipe. However, due to human factors, there may be shaking and other movements, and manual operation may cause the flame to deviate from the predetermined ignition point of the sample or fail to maintain the vertical direction, resulting in non-compliance with the standard ignition conditions, inaccurate test data, and unstable flame near the combustion cylinder, which may increase the burning sensation of the hand and is not safe to operate. SUMMARY

[0004] The utility model solves the technical problem in view of the above-mentioned defects of prior art, and provides an ignition combustion test device.

[0005] The utility model adopts the technical scheme that an ignition combustion test device comprises a vertical ignition gas pipe, a support rod transversely arranged and connected with the ignition gas pipe, a lifting assembly driving the support rod to move along the Z axis, and a gas supply assembly conveying combustible gas into the ignition gas pipe through the gas pipe; the ignition gas pipe is provided with an igniter at one end of the lower end gas outlet; the igniter generates an electric spark at the lower end gas outlet of the ignition gas pipe in cooperation with the electric wire to ignite the combustible gas sprayed downward by the ignition gas pipe;

[0006] The ignition combustion test device, wherein the free end of the support rod is provided with a through hole for the ignition gas pipe to pass through; the ignition gas pipe is fixedly provided with a limiting block extending to both sides of the ignition gas pipe at the upper end of the through hole; a reset elastic member is further arranged between the limiting block and the support rod and sleeved on the ignition gas pipe;

[0007] The utility model discloses ignition combustion test device, wherein, the support rod is the telescopic rod structure that can drive the ignition gas pipe transversely close or far from the lifting assembly,

[0008] The utility model discloses ignition combustion test device, wherein, the lifting assembly includes the threaded rod that sets up vertically, the nut that is movably sleeved on the threaded rod and is connected with the threaded rod cooperation screw thread transmission engagement, and the driving piece of drive threaded rod autorotation to drive the nut along the length direction of threaded rod moves, one end of support rod is fixedly connected with the nut, and the other end is connected with ignition gas pipe,

[0009] The utility model discloses ignition combustion test device, wherein, the lifting assembly still includes the guide rod that a plurality of all with threaded rod is parallel, a plurality of guide rod surrounds the outside of threaded rod and arranges in proper order, the nut is connected with a plurality of guide rod sliding,

[0010] The utility model discloses ignition combustion test device, wherein, the lifting assembly still includes the base and the stand that sets up fixedly on the base, the stand is the hollow structure, the threaded rod and the nut all are located in the stand, the side surface of the stand towards ignition gas pipe is equipped with the avoidance opening that is linked together with the cavity of stand along its length direction, one end of support rod passes through the avoidance opening and is fixedly connected with the nut,

[0011] The utility model discloses ignition combustion test device, wherein, the driving piece includes the cylindrical cross bar that sets up transversely to one side of threaded rod, and the outer thread that is equipped with with the length direction of cross bar outer side surface along it and is connected with threaded rod surface screw thread cooperation engagement transmission is equipped with, the threaded rod transverse rotation process drive the longitudinal autorotation of threaded rod that is engaged with it,

[0012] The utility model discloses ignition combustion test device, wherein, the inside of base is the hollow structure that is linked together with the stand, and the lower end of threaded rod is connected with the base rotation through the rotation bearing after stretching into the base,

[0013] The utility model discloses ignition combustion test device, wherein, the cross bar rotation sets up in the base and is located one side of threaded rod, and the rocker that still includes the fixed connection of traversing base with cross bar,

[0014] The utility model discloses ignition combustion test device, wherein, still be equipped with the gas valve on the gas pipe and regulate the input gas flow size in ignition gas pipe.

[0015] The beneficial effects of this utility model are as follows: The ignition and combustion testing device has an ingenious structural design. Through the cooperation of the support rod and the lifting component, the height of the vertically set ignition gas pipe can be precisely controlled, ensuring that the distance between the flame outlet and the sample strictly meets the standard without relying on manual adjustment. The vertically set ignition gas pipe is connected to the lifting component through the support rod, and the gas at the lower end of the ignition gas pipe outlet is always sprayed vertically downwards. There is no need for the operator to manually fix the ignition gas pipe. This not only avoids the positional deviation or angle tilt of the ignition gas pipe when manually clamping it in the prior art, but also avoids shaking during the handheld ignition operation, ensuring the stability of the flame spray direction, height, and position. Furthermore, by controlling the spark generated by the igniter and the wire, the gas can be automatically ignited without manual ignition, avoiding flame intensity fluctuations caused by manual operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an ignition and combustion testing device according to a preferred embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 yes Figure 1 A schematic diagram of the lifting component 13 in the diagram. Detailed Implementation

[0020] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0023] Furthermore, the terms indicating orientation, such as "up, down, front, back, left, right, upper end, lower end, longitudinal," etc., are all based on the posture and position of the device or equipment described in this solution during normal use.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0025] A preferred embodiment of the present invention provides an ignition and combustion testing device, such as... Figures 1-3 As shown, the device includes a vertically arranged ignition gas pipe 11. The ignition and combustion testing device also includes a horizontally arranged support rod 12 connected to the ignition gas pipe 11, a lifting assembly 13 that moves the support rod 12 along the Z-axis, and a gas supply assembly 15 that delivers combustible gas to the ignition gas pipe 11 via a gas pipe 14. The vertical arrangement of the ignition gas pipe allows the combustible gas to spray downwards, reducing its diffusion in the surrounding environment and lowering the fire risk. The horizontally arranged support rod and lifting assembly simplify operation, allowing easy adjustment of the ignition position to suit testing needs at different heights. The gas supply assembly 15 is a gas cylinder as used in the prior art. An igniter 16 is installed on one side of the lower outlet of the ignition gas pipe 11. The igniter 16, in conjunction with an electric wire 17, generates an electric spark at the lower outlet of the ignition gas pipe 11, igniting the combustible gas sprayed downwards from the ignition gas pipe 11. The combustible gas includes propane, natural gas, carbon monoxide, etc.

[0026] Optionally, the gas pipe 14 is also provided with a gas valve 18 for adjusting the gas flow rate in the input ignition gas pipe 11, thereby controlling the length or size of the flame ejected outward from the ignition gas pipe 11 to meet the flame-related standard requirements in GB 17945-2010 and GB4717-2024.

[0027] In this embodiment, the igniter 16 is a common ignition device in the prior art. The principle of the igniter 16 and the wire 17 generating an electric spark is based on the principle of high-voltage discharge, which can be referred to as the ignition principle of an electric lighter. When current flows into the igniter 16 through the wire 17, a magnetic field is generated in the primary coil of the igniter. When the current is cut off, the magnetic field decays rapidly. According to Faraday's law of electromagnetic induction, this process generates a reverse electromotive force in the primary coil. Since the secondary coil of the ignition coil is mutually inductive with the primary coil, this reverse electromotive force induces a high voltage of several thousand to tens of thousands of volts in the secondary coil. The high voltage generated by the secondary coil passes through the air gap between the center electrode (or ignition needle) and the ground electrode (or the spark plug shell) of the igniter. When the voltage reaches a certain level, sufficient to break down the insulation strength of the air gap, the gas molecules in the air are ionized, forming a plasma channel. Once the air is broken down, the high voltage forms a conductive plasma channel between the center electrode and the ground electrode. A large number of electrons and ions flow in this channel, thereby forming an electric spark. This electric spark has a very high temperature, sufficient to ignite a flammable gas mixture. The spark is generated at the lower outlet of the ignition gas pipe, igniting the ejected flammable gas and thus achieving the ignition process. Throughout the process, the generation of the electric spark is instantaneous and high-energy, ensuring that the flammable gas can be effectively ignited.

[0028] This ignition and combustion testing device features an ingenious structural design. Through the cooperation of the support rod and the lifting assembly, the height of the vertically positioned ignition gas pipe can be precisely controlled, ensuring that the distance between the flame outlet and the sample strictly conforms to the standard without the need for manual adjustment. The vertically positioned ignition gas pipe is connected to the lifting assembly via the support rod, ensuring that the gas at the lower outlet of the ignition gas pipe is always sprayed vertically downwards. This eliminates the need for manual fixing of the ignition gas pipe by the operator, avoiding positional deviations or angle tilts caused by manually clamping the ignition gas pipe in existing technologies. It also prevents shaking during handheld ignition, ensuring the stability of the flame spray direction, height, and position. Furthermore, by controlling the spark generated by the igniter in conjunction with the wire, the gas can be automatically ignited without manual intervention, avoiding flame intensity fluctuations caused by manual operation.

[0029] Furthermore, the free end of the support rod 12 is provided with a through hole 121 for the ignition gas pipe 11 to pass through; a limiting block 122 extending to both sides of the ignition gas pipe 11 is fixedly installed at the upper end of the through hole 121; the limiting block 122 can prevent the ignition gas pipe 11 from detaching from the support rod 12, and can prevent the ignition gas pipe 11 from accidentally falling off during the lifting process, thereby improving the reliability of the device; a reset elastic element 123 sleeved on the ignition gas pipe 11 is also provided between the limiting block 122 and the support rod 12. The reset elastic element 123, such as a spring or rubber pad, can absorb and buffer the vibration that may be generated by the ignition gas pipe 11 during the lifting process, reducing the impact on the support structure and connecting parts.

[0030] Furthermore, the support rod 12 is a telescopic rod structure that can drive the ignition gas pipe 11 to move laterally, allowing the ignition gas pipe 11 to move a large distance in the lateral range, thereby adjusting the ignition position to adapt to different testing requirements. Optionally, the support rod 12 is flat and includes an inner rod 124 and an outer rod 125 that is movably connected to the inner rod 124; both the inner rod 124 and the outer rod 125 include a base plate 1241 and connecting rods 1242 extending in the same direction from both sides of the base plate 1241; the connecting rods 1242 on the inner rod 124 and the connecting rods 1242 on the outer rod 125 are arranged facing each other; the through hole 121 is located on the base plate 1241 of the inner rod 124; of the connecting rods 1242 of the inner rod 124 and the outer rod 125, one connecting rod 1242 is a solid structure, and the other connecting rod 1242 is a receiving cavity for the solid connecting rod 1242 to be interference-fitted. The telescopic rod structure is generally simple to operate. The ignition gas pipe 11 can be moved laterally simply by stretching the inner rod 124 outward or pushing it inward. No complicated mechanical adjustment is required, and it is highly flexible. Alternatively, the support rod 12 can also be a support plate structure with a fixed length. In this embodiment, the through hole 121 is located on the base plate 1241 of the outer rod 125.

[0031] In this embodiment, the lifting assembly 13 includes a vertically arranged threaded rod 131, a nut 132 movably sleeved on the threaded rod 131 and engaged with it via a threaded transmission, and a driving member 133 that drives the threaded rod 131 to rotate, thereby causing the nut 132 to move along the length of the threaded rod 131. In this embodiment, the driving member 133 (which may be a motor, a manual crank, or other driving device) is used to rotate the threaded rod 131. When the driving member 133 rotates the threaded rod 131 clockwise or counterclockwise, the nut 132 will correspondingly rise or fall along the axial direction of the threaded rod 131.

[0032] One end of the support rod 12 is fixedly connected to the nut 132, and the other end is connected to the ignition gas pipe 11. The lifting principle of the lifting assembly 13 is based on the basic principle of threaded transmission. By rotating the threaded rod 131 through the drive component 133, the rotational motion of the threaded rod is converted into the linear motion of the nut along the length of the threaded rod by the meshing action of the threaded rod and the nut thread pair, so that the nut 132 moves along the threaded rod 131, thereby realizing the lifting motion of the support rod 12 and the ignition gas pipe 11.

[0033] Specifically, the threaded drive principle is as follows: a helical thread is machined on the threaded rod 131, and a helical thread matching the threaded rod 131 is also machined inside the nut 132. When the threaded rod 131 rotates, the nut 132 will move along the axial direction of the threaded rod 131.

[0034] The lifting and lowering process is as follows:

[0035] Rising: When the drive component 133 rotates the threaded rod 131 clockwise, the nut 132 rises along the axial direction of the threaded rod 131 under the action of the thread. Since one end of the support rod 12 is fixedly connected to the nut 132, the support rod 12 will also rise, thereby driving the ignition gas pipe 11 connected to it to rise.

[0036] Lowering: Conversely, when the drive unit 133 rotates the threaded rod 131 counterclockwise, the nut 132 will descend along the axial direction of the threaded rod 131, and the support rod 12 and the ignition gas pipe 11 will also descend accordingly.

[0037] Fixing and positioning: When the desired lifting position is reached, the rotation of the drive component 133 can be stopped, and the nut 132 will remain fixed on the threaded rod 131, thereby achieving precise positioning of the lifting component 13.

[0038] In this embodiment, the threaded drive provides a stable lifting method, unlike some pneumatic or hydraulic systems that produce fluctuations, thus ensuring the stability of the ignition gas pipe 11 during the lifting process. Alternatively, the lifting assembly 13 can also adopt a linear drive motor module or a linear screw module from the prior art, which will not be elaborated here.

[0039] Furthermore, the lifting assembly 13 also includes multiple guide rods 134, all parallel to the threaded rod 131; the multiple guide rods 134 are arranged sequentially around the outer side of the threaded rod 131; the nut 132 is slidably connected to the multiple guide rods 134; the multiple guide rods 134 can provide additional guidance for the nut 132, ensuring that the nut 132 will not shift laterally due to the rotation of the threaded rod 131 during the lifting process, thereby improving the straightness and accuracy of the lifting.

[0040] Furthermore, the lifting assembly 13 also includes a base 135 and a column 136 fixedly mounted on the base 135; the column 136 is a hollow structure; the threaded rod 131 and the nut 132 are both located inside the column 136; placing the threaded rod 131 and the nut 132 inside the column 136 not only protects the internal threaded rod 131 and nut 132 from external dust, debris or other harmful factors, improving the cleanliness and service life of the assembly, but also prevents operators from accidentally contacting the rotating threaded rod 131 during lifting, improving operational safety. The side of the column 136 facing the ignition gas pipe 11 has a clearance opening 137 along its length that communicates with the cavity of the column. This not only allows operators to directly observe and contact the connection between the support rod 12 and the nut 132, facilitating adjustment and inspection, but also allows the support rod to move smoothly without interference; one end of the support rod 12 passes through the clearance opening 137 and is fixedly connected to the nut 132.

[0041] Furthermore, the driving component 133 includes a cylindrical crossbar 1331 laterally disposed on one side of the threaded rod 131; the outer surface of the crossbar 1331 is provided with an external thread along its length direction that engages with the threaded rod 131, simplifying the transmission mechanism, reducing the number of parts, and lowering the cost; during the lateral rotation of the threaded rod 131, it drives the threaded rod 131 meshing with it to rotate longitudinally; the rotation of the lateral threaded rod can be made more stable by the tight engagement of the external thread with the threaded rod, thus reducing vibration.

[0042] Specifically, its driving principle is based on the transmission principle of a screw pair. Utilizing the principle of the screw pair, the lateral rotation of the transverse threaded rod is converted into the longitudinal rotation of the vertical threaded rod. Specifically, the transverse thread of the transverse threaded rod (driving rod) meshes with the vertical thread of the vertical threaded rod (driven rod). When the transverse threaded rod rotates, the driving force generated by the teeth of the transverse thread on the thread of the vertical threaded rod achieves the longitudinal rotation of the vertical threaded rod. This threaded transmission driving method is one of the common driving methods in this field.

[0043] Furthermore, the base 135 has a hollow structure that communicates with the column 136; the lower end of the threaded rod 131 extends into the base 135 and is rotatably connected to the base 135 via a rotary bearing. The rotary bearing provides a stable support point for the threaded rod 131, enabling the threaded rod to remain stable during rotation without excessive swaying or deviation; and the friction is low.

[0044] Furthermore, the crossbar 1331 is rotatably mounted within the base 135 and located on one side of the threaded rod 131; the drive unit 133 also includes a rocker arm 1332 that passes through the base 135 and is fixedly connected to the crossbar 1331, allowing the operator to easily drive the crossbar 1331 to rotate by rocking the rocker arm, thereby controlling the raising and lowering of the nut on the threaded rod 131. This operation method is generally more labor-saving and convenient than directly rotating the threaded rod, and the rocker arm 1332 can be located outside the base 135, thus providing an external operation method without increasing the overall size of the lifting assembly, which is beneficial for use in limited spaces and has a high space utilization rate.

[0045] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A pilot flame test apparatus comprising a vertically arranged pilot gas tube, characterized in that, The support rod is provided with a through hole for the ignition gas pipe to pass through; the ignition gas pipe is fixedly provided with a limiting block extending to both sides of the ignition gas pipe at the upper end of the through hole; a reset elastic member is further arranged on the ignition gas pipe between the limiting block and the support rod.

2. A device for testing the ignition of a fuel according to claim 1, wherein The support rod is a telescopic rod structure capable of driving the ignition gas pipe to move laterally close to or away from the lifting assembly.

3. The ignition and combustion testing apparatus of claim 1 or 2, wherein, The lifting assembly comprises a vertically arranged threaded rod, a nut movably arranged on the threaded rod and in threaded transmission engagement with the threaded rod, and a driving member for driving the threaded rod to rotate to drive the nut to move along the length direction of the threaded rod; one end of the support rod is fixedly connected with the nut, and the other end is connected with the ignition gas pipe.

4. The ignition and combustion testing apparatus of claim 3, wherein, The lifting assembly further comprises a plurality of guide rods parallel to the threaded rod; the plurality of guide rods are arranged in sequence around the outer side of the threaded rod; the nut is in sliding connection with the plurality of guide rods.

5. The ignition and combustion testing apparatus of claim 4, wherein, The lifting assembly further comprises a base and a stand fixedly arranged on the base; the stand is a hollow structure; the threaded rod and the nut are located in the stand; one side surface of the stand facing the ignition gas pipe is provided with an avoiding opening in communication with the cavity of the stand along the length direction of the stand; one end of the support rod passes through the avoiding opening and is fixedly connected with the nut.

6. The ignition and combustion testing apparatus of claim 4 or 5, wherein, The driving member comprises a cylindrical cross bar arranged laterally on one side of the threaded rod; the outer surface of the cross bar is provided with external threads in communication with the surface threads of the threaded rod along the length direction of the cross bar; the threaded rod drives the threaded rod in longitudinal rotation during lateral rotation of the threaded rod.

7. The ignition and combustion testing apparatus of claim 6, wherein, The inside of the base is a hollow structure in communication with the stand; the lower end of the threaded rod is in rotational connection with the base through a rotating bearing after extending into the base.

8. The ignition and combustion testing apparatus of claim 6, wherein, The cross bar is rotatably arranged in the base and located on one side of the threaded rod; the driving member further comprises a rocker rod fixedly connected with the cross bar after penetrating through the base.

9. The ignition and combustion testing apparatus of claim 7, wherein, The gas pipe is further provided with a gas valve for regulating the flow of gas input into the ignition gas pipe.

10. The ignition and combustion testing apparatus of claim 1, wherein, ​

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