Simple device for testing use performance of jet fuel combustible gas alarm

Abstract

The utility model relates to a simple device for testing the use performance of a jet fuel combustible gas alarm, which comprises a first cavity for containing hot water, a second cavity for containing jet fuel is sleeved in the first cavity, and the first cavity and the second cavity are not communicated with each other; an upper cover is embedded in a top opening of the second cavity, a stirring rod is fixedly arranged in the center of the upper cover in a penetrating mode through a bearing, and stirring ribs are arranged at the tail end of the stirring rod; the embedded surface of the upper cover is provided with a gas diversion trench along the circumferential direction, an oil gas outlet of the gas diversion trench is connected with an oil gas output cover through a conduit, and after the generated oil gas is conveyed to the oil gas output cover, the jet fuel combustible gas alarm is tested. According to the simple device provided by the utility model, oil gas generated by jet fuel is used as signal gas, so that the volatilization speed of the jet fuel is accelerated, and the use performance and the alarm sensitivity of the combustible gas alarm can be rapidly tested.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a simple device for testing the performance of a jet fuel combustible gas alarm. Background Technology

[0002] Combustible gas detectors, also known as gas leak detection alarms, are used in industrial and daily life environments to detect leaks of flammable gases. When the concentration of the flammable gas reaches the set alarm value, the detector will emit an audible and visual alarm signal. Combustible gas detectors for jet fuel also require regular testing during daily storage and transportation.

[0003] Existing methods for detecting combustible gases from jet fuel mainly include using other combustible gases to simulate leaks instead of jet fuel vapors, and placing jet fuel in a flared bottle at the detector probe. Using other combustible gases to simulate leaks has problems such as inaccurate substitution and inability to accurately reflect the characteristics of jet fuel. Using a flared bottle to simulate leaks is inefficient because jet fuel has poor volatility, requiring several minutes (tens of minutes) for the gas detector to reach the alarm threshold.

[0004] Patent document CN218214378U discloses a calibration device for a high-altitude combustible gas alarm, comprising a gas mass flow controller, a portable ventilation rod, an infrared combustible gas concentration detector, and a concentration detector receiver. The outlet of the gas mass flow controller is connected to the bottom inlet of the portable ventilation rod via a pipeline, and the top of the portable ventilation rod is connected to the inlet of the infrared combustible gas concentration detector. The outlet of the infrared combustible gas concentration detector is connected to the sensor of the high-altitude combustible gas alarm under test via a gas calibration cover. The concentration detector receiver receives the gas concentration signal emitted by the infrared combustible gas concentration detector. However, this calibration device has a relatively complex structure and high production cost. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a simple device for testing the performance of a combustible gas alarm using jet fuel. This device uses the oil and gas produced by jet fuel as the signal gas, accelerates the evaporation rate of the jet fuel, and thus quickly tests the performance and alarm sensitivity of the combustible gas alarm.

[0006] To achieve the objective of this utility model, the following technical solution is adopted:

[0007] This utility model provides a simple device for testing the performance of a jet fuel combustible gas alarm. The simple device includes a first cavity containing hot water, and a second cavity containing jet fuel is nested inside the first cavity. The first cavity and the second cavity are not connected to each other.

[0008] The top opening of the second cavity is fitted with a top cover, and a stirring rod is fixedly inserted through the center of the top cover by a bearing. The end of the stirring rod is provided with a stirring rib. A gas guide groove is opened circumferentially on the embedded surface of the top cover. The oil and gas outlet of the gas guide groove is connected to an oil and gas output hood through a conduit. After the generated oil and gas is transported to the oil and gas output hood, the jet fuel combustible gas alarm is tested.

[0009] This invention provides a simple device for testing the performance of a jet fuel combustible gas alarm. It uses the oil and gas generated by the jet fuel as a signal gas, simulating the purging of the detector's probe by oil and gas during an oil leak, thus triggering an alarm and simulating a leak alarm. The first chamber, filled with hot water, allows for rapid heating of the jet fuel. The stirring ribs thoroughly agitate the jet fuel, ensuring complete mixing of air and heated fuel, resulting in a rapid generation of numerous rising oil and gas bubbles. This solves the problem of slow testing speed due to the non-volatile nature of jet fuel, significantly improving testing efficiency and offering convenient and flexible use. The gas guide channel directs the gas, and the generated oil and gas are transported through a conduit to the oil and gas output hood, preventing the combustible gas alarm from being contaminated by the jet fuel during testing, which could lead to prolonged alarms. This simple device for testing the performance of a jet fuel combustible gas alarm enables rapid testing of its performance and alarm sensitivity.

[0010] The temperature of the hot water contained in the first cavity is 80-90℃, for example, it can be 80℃, 82℃, 85℃, 88℃ or 90℃, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0011] This invention features a first chamber filled with hot water, which enables rapid heating of the jet fuel, facilitating the rapid generation of large quantities of oil and gas.

[0012] As a preferred embodiment of the present invention, the second cavity includes a stirring zone and a buffer zone arranged sequentially along the oil and gas flow direction.

[0013] As a preferred embodiment of this invention, the width of the buffer zone is greater than the width of the stirring zone.

[0014] It should be noted that this utility model does not impose specific requirements or special limitations on the size of the buffer zone and the stirring zone. The function of the buffer zone in this utility model is to contain and buffer the rising oil and gas, and the stirring zone in this utility model is the area for stirring the jet fuel. Therefore, it can be understood that other buffer zones and stirring zones that can achieve such functions can be used in this utility model. Those skilled in the art can make adaptive adjustments to the size of the buffer zone and the stirring zone according to the usage scenario and test conditions.

[0015] As a preferred technical solution of this utility model, a rocker handle is fixedly provided at the head end of the stirring rod.

[0016] As a preferred technical solution of this utility model, stirring ribs are respectively provided on both sides of the end of the stirring rod, and the stirring ribs are arranged in an alternating manner.

[0017] As a preferred embodiment of this invention, the stirring ribs are distributed within the stirring zone.

[0018] As a preferred technical solution of this utility model, the upper cover includes an embedded cover body, which is fitted into the top opening of the second cavity; a cover plate is fixedly connected to the top of the embedded cover body, and the edge of the cover plate covers the top opening of the first cavity.

[0019] As a preferred embodiment of this invention, the outer ring of the bearing is fixed to the upper cover, and the inner ring of the bearing is fixedly inserted through the stirring rod, so that the stirring rod can rotate relative to the second cavity.

[0020] As a preferred technical solution of this utility model, a flow guide is provided at the connection between the bearing and the stirring rod. The flow guide has a horn-shaped structure. The narrow end of the flow guide is fixedly connected to the stirring rod, and the wide end of the flow guide extends into the gas flow channel and covers the inner edge of the gas flow channel.

[0021] The wide end of the deflector extends into the gas guide groove and covers the inner edge of the gas guide groove, which can prevent oil and gas from entering the bearing.

[0022] As a preferred technical solution of this utility model, along the direction pointing to the first cavity, the shell of the second cavity includes a heat insulation layer and a stainless steel layer arranged sequentially.

[0023] The shell of the second cavity is provided with an insulation layer and a stainless steel layer, which can improve the insulation effect and prevent damage during use.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention provides a simple device for testing the performance of a combustible gas alarm using jet fuel. It uses the oil and gas generated by the jet fuel as a signal gas, simulating the purging of the detector's probe by oil and gas during an oil leak, thus triggering an alarm and simulating a leak alarm. A first chamber filled with hot water allows for rapid heating of the jet fuel. The stirring ribs thoroughly agitate the jet fuel, ensuring complete mixing of air and heated fuel, resulting in a rapid generation of numerous rising oil and gas bubbles. This solves the problem of slow testing speed due to the non-volatile nature of jet fuel, enabling rapid testing of the combustible gas alarm's performance. The gas guide channel directs the gas, and the generated oil and gas are transported through a conduit to the oil and gas output hood, preventing the combustible gas alarm from being contaminated by the jet fuel during testing and causing prolonged alarms. This device also allows for rapid testing of the alarm sensitivity of the combustible gas alarm. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a simple device for testing the performance of a jet fuel combustible gas alarm provided by this utility model.

[0027] Wherein: 1, first cavity; 2, second cavity; 3, bearing; 4, stirring rod; 5, crank handle; 6, stirring rib; 7, gas guide groove; 8, conduit; 9, oil and gas output cover; 10, embedded cover; 11, cover plate; 12, guide shroud. Detailed Implementation

[0028] It should be understood that in the description of this utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] This embodiment provides a simple device for testing the performance of a jet fuel combustible gas alarm, as shown in the schematic diagram below. Figure 1 As shown, the simple device includes a first cavity 1 containing hot water at 85°C, and a second cavity 2 containing jet fuel is installed inside the first cavity 1. The first cavity 1 and the second cavity 2 are not connected to each other. Along the direction pointing to the first cavity 1, the shell of the second cavity 2 includes a heat insulation layer and a stainless steel layer arranged in sequence.

[0033] The top opening of the second cavity 2 is fitted with a top cover. A stirring rod 4 is fixedly inserted through the center of the top cover via a bearing 3. The outer ring of the bearing 3 is fixed to the top cover, and the inner ring of the bearing 3 is fixedly inserted through the stirring rod 4, so that the stirring rod 4 can rotate relative to the second cavity 2. A crank handle 5 is fixedly installed at the head end of the stirring rod 4, and stirring ribs 6 are respectively provided on both sides of the end of the stirring rod 4. The stirring ribs 6 are arranged in an alternating pattern. A gas guide groove 7 is opened circumferentially on the embedded surface of the top cover. The oil and gas outlet of the gas guide groove 7 is connected to an oil and gas output hood 9 through a conduit 8. After the generated oil and gas is transported to the oil and gas output hood 9, the jet fuel combustible gas alarm is tested.

[0034] The second cavity 2 includes a stirring zone and a buffer zone arranged sequentially along the oil and gas flow direction, wherein the width of the buffer zone is greater than the width of the stirring zone; the stirring ribs 6 are distributed within the stirring zone.

[0035] The upper cover includes an embedded cover body 10, which is fitted into the top opening of the second cavity 2; a cover plate 11 is fixedly connected to the top of the embedded cover body 10, and the edge of the cover plate 11 covers the top opening of the first cavity 1.

[0036] A flow guide shroud 12 is provided at the connection between the bearing 3 and the stirring rod 4. The flow guide shroud 12 has a trumpet-shaped structure. The narrow end of the flow guide shroud 12 is fixedly connected to the stirring rod 4, and the wide end of the flow guide shroud 12 extends into the gas flow channel 7 and covers the inner edge of the gas flow channel 7.

[0037] In use, open the top cover, add 85°C hot water to the first chamber 1, add jet fuel to the second chamber 2, close the top cover, and turn the crank handle 5 to rotate the stirring rod 4 relative to the second chamber 2, thereby achieving thorough stirring of the jet fuel. Using the simple device provided in this embodiment, the performance and alarm sensitivity of the jet fuel combustible gas alarm can be tested. It can accelerate the evaporation rate of the jet fuel, improve testing efficiency, and avoid the problem of the combustible gas alarm being easily contaminated by the jet fuel during testing, thus preventing prolonged alarms.

[0038] Example 2

[0039] This embodiment provides a simple device for testing the performance of a jet fuel combustible gas alarm. The difference from Embodiment 1 is that the stirring rod 4 does not have stirring ribs 6 on both sides of its end, but the rest is the same as Embodiment 1.

[0040] In this embodiment, because no stirring ribs are provided, the air and the heated jet fuel cannot be fully mixed, which leads to the problem that the jet fuel is not easy to evaporate and the test speed is slow, significantly reducing the test efficiency.

[0041] In summary, the simple device for testing the performance of a combustible gas alarm using jet fuel provided by this utility model uses the oil and gas generated by jet fuel as a signal gas to simulate the purging of the probe part of the combustible gas alarm during an oil leak, thereby triggering the alarm value and simulating a leak alarm. The first chamber containing hot water allows for rapid heating of the jet fuel. The stirring ribs thoroughly agitate the jet fuel, ensuring complete mixing of air and heated fuel, thus rapidly generating a large number of rising oil and gas bubbles. This solves the problem of slow testing speed due to the non-volatile nature of jet fuel, enabling rapid testing of the combustible gas alarm's performance. The gas guide channel directs the gas, and the generated oil and gas are transported to the oil and gas output hood through a conduit, solving the problem of the combustible gas alarm being easily contaminated by jet fuel during testing, leading to prolonged alarms. Simultaneously, it allows for rapid testing of the alarm sensitivity of the combustible gas alarm.

[0042] The applicant declares that the above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A simple device for testing the performance of a jet fuel combustible gas alarm, characterized in that, The simple device includes a first chamber for holding hot water, and a second chamber for holding jet fuel is fitted inside the first chamber. The first chamber and the second chamber are not in communication with each other. The top opening of the second cavity is fitted with a top cover, and a stirring rod is fixedly inserted through the center of the top cover by a bearing. The end of the stirring rod is provided with a stirring rib. A gas guide groove is opened circumferentially on the embedded surface of the top cover. The oil and gas outlet of the gas guide groove is connected to an oil and gas output hood through a conduit. After the generated oil and gas is transported to the oil and gas output hood, the jet fuel combustible gas alarm is tested.

2. The simplified device according to claim 1, characterized in that, The second cavity includes a stirring zone and a buffer zone arranged sequentially along the oil and gas flow direction.

3. The simplified device according to claim 2, characterized in that, The width of the buffer zone is greater than the width of the stirring zone.

4. The simplified device according to claim 1, characterized in that, A crank handle is fixedly installed at the head end of the stirring rod.

5. The simplified device according to claim 1, characterized in that, The stirring rod has stirring ribs on both sides of its end, and the stirring ribs are arranged in an alternating pattern.

6. The simplified device according to claim 2, characterized in that, The stirring ribs are distributed within the stirring zone.

7. The simplified device according to claim 1, characterized in that, The upper cover includes an embedded cover body, which is fitted into the top opening of the second cavity; a cover plate is fixedly connected to the top of the embedded cover body, and the edge of the cover plate covers the top opening of the first cavity.

8. The simplified device according to claim 1, characterized in that, The outer ring of the bearing is fixed to the upper cover, and the inner ring of the bearing is fixedly inserted through the stirring rod, so that the stirring rod can rotate relative to the second cavity.

9. The simplified device according to claim 1, characterized in that, A flow guide is provided at the connection between the bearing and the stirring rod. The flow guide has a horn-shaped structure. The narrow end of the flow guide is fixedly connected to the stirring rod, and the wide end of the flow guide extends into the gas flow channel and covers the inner edge of the gas flow channel.

10. The simplified device according to claim 1, characterized in that, Along the direction pointing towards the first cavity, the shell of the second cavity includes a heat insulation layer and a stainless steel layer arranged sequentially.

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