An experimental device for igniting explosive gases using radio frequency electromagnetic energy.

Abstract

The application discloses a kind of test devices of radio frequency electromagnetic energy ignition explosive gas, comprising: test platform, is equipped with protective cover to constitute closed space;Valve assembly, through test platform and extend to the inside of closed space, for into explosive gas inside closed space and form explosive test environment;Loop antenna, inside closed space and have breakpoint, by with the specific frequency signal emitted from 5G radio frequency source outside closed space resonance, as the receiving antenna of 5G radio frequency energy;Electric cylinder, fixed to test platform and in closed space outside;Swing assembly, swing assembly is controlled to electric cylinder and reciprocating swing, and dome rod in swing assembly intermittent contact between loop antenna when reciprocating swing;The test device is used to measure the power threshold and energy threshold of 5G radio frequency signal ignition explosive gas, provide basis for the safe use of 5G radio frequency source in explosive place.

Description

Technical Field

[0001] This application relates to the field of 5G communication technology, and in particular to a test device for igniting explosive gases using radio frequency electromagnetic energy. Background Technology

[0002] The IEC 60079-0 and GB / T 3836.1 standards specify power and energy thresholds for radio frequency (RF) sources. For example, when the explosive gas is methane, the threshold power of the RF source should not exceed 6W and the threshold energy should not exceed 1500uJ within 200µs. However, these standards are based on tests of low-frequency electromagnetic signals, and the modulation methods are still at the AM and FM stages, therefore they are not applicable to 5G RF signals.

[0003] The BS6656-2002 standard has a unique testing scheme related to electromagnetic energy, which utilizes the energy measured at the receiver of an IEC standard spark test bench to determine if it can ignite an explosive atmosphere. However, the IEC standard spark test bench is only suitable for low-frequency signals with frequencies no higher than 1.5MHz, while typical frequencies of 5G radio frequency signals include high-frequency signals such as 700MHz, 2.1MHz, 2.6MHz, and 3.5MHz. Furthermore, the IEC standard spark test bench suffers from impedance mismatch issues when testing high-frequency signals. For example, in the case of impedance mismatch, the signal energy may be reflected back to the signal source and fail to reach the spark test bench's ignition section. Therefore, it is impossible to effectively assess whether the failure of radio frequency energy to ignite explosive gases is due to impedance mismatch or because the radio frequency energy did not reach the energy threshold required to ignite the gas. Clearly, the existing scheme is not suitable for safety threshold testing of 5G radio frequency signals.

[0004] Currently, there are no published papers or patents at home and abroad that disclose dedicated test devices developed to address the safety threshold of radio frequency electromagnetic energy in explosive environments. Therefore, how to assess the safe power and energy threshold of 5G radio frequency signals in explosive environments is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This invention discloses a test device for igniting explosive gases using radio frequency electromagnetic energy, specifically for 5G communication technology. The device measures the power threshold and energy threshold of 5G radio frequency signals igniting explosive gases, providing a basis for the safe use of 5G radio frequency sources in explosive locations.

[0006] To address the aforementioned technical problems, a first aspect of the present invention discloses a test apparatus for igniting explosive gases using radio frequency electromagnetic energy, comprising:

[0007] The test platform is fitted with a protective cover to form a sealed space;

[0008] A valve assembly extends through the test platform and into the enclosed space to introduce explosive gas into the enclosed space to create an explosive test environment.

[0009] A loop antenna, located inside the enclosed space and having a breakpoint, resonates with a specific frequency signal emitted by a 5G radio frequency source outside the enclosed space, thereby serving as a receiving antenna for 5G radio frequency energy.

[0010] An electric cylinder is fixed to the test platform and located outside the enclosed space;

[0011] A swing assembly, which is controlled by the electric cylinder to swing back and forth, and the dome rod in the swing assembly makes intermittent contact with the ring antenna during the reciprocating swing.

[0012] During testing, the electric cylinder drives the swing assembly to reciprocate and intermittently contact the loop antenna through the dome rod, forcing the breakpoint of the loop antenna to undergo a continuous "on-off-on" electrical state change. During the change of electrical connection state, the 5G radio frequency energy undergoes gap breakdown and generates sparks. When the spark energy exceeds the threshold, the surrounding explosive gas is at risk of being ignited. The energy threshold and power threshold extracted from the explosive test environment when the loop antenna ignites the explosive gas are determined based on the threshold power emitted by the 5G radio frequency source and the electromagnetic field strength in the confined space.

[0013] Preferably, the valve assembly includes a valve and a pipe holder;

[0014] The pipe holder serves as a fixing element for the valve, passing through the test platform and extending into the enclosed space.

[0015] Preferably, there are two or more valve assemblies, and different explosive gases are introduced into the two or more valve assemblies respectively to verify the explosion threshold of different explosive gases.

[0016] Preferably, the loop antenna is fixed to the test platform inside the enclosed space by a loop antenna bracket; wherein,

[0017] The ring antenna bracket has a position adjustment function to ensure that the ring antenna receives the 5G radio frequency energy from outside the enclosed space to the maximum extent.

[0018] Preferably, the loop antenna is connected to the radio frequency source as a transmitting antenna to release 5G radio frequency energy.

[0019] Preferably, the electric cylinder is fixed to the test platform by an electric cylinder bracket.

[0020] Preferably, the oscillating component includes:

[0021] A main pendulum rod passes through the test platform and extends into the enclosed space; one end of the main pendulum rod is connected to the electric cylinder via a transition shaft, and the other end is connected to the dome rod via a connecting rod, both of which are located inside the enclosed space;

[0022] The dome rod has a top component that makes intermittent contact with the ring antenna during reciprocating swing.

[0023] Preferably, the contact position between the main pendulum rod and the test platform has a sealing sleeve fixing seat and a sealing sleeve to achieve a seal; wherein,

[0024] The sealing sleeve fixing seat is used to fix the sealing sleeve to the test platform.

[0025] Preferably, the swing assembly is supported by a support bracket of the test platform disposed inside the sealed space.

[0026] Preferably, the sealed space is equipped with a standard igniter for verifying whether the injected explosive gas can be detonated;

[0027] The standard igniter is fixed to the test platform inside the sealed space via an ignition wire fixing bracket.

[0028] Through one or more technical solutions of the present invention, the present invention has the following beneficial effects or advantages:

[0029] This invention discloses an experimental apparatus for igniting explosive gases using radio frequency electromagnetic energy. It mainly consists of a test platform, a protective cover, and a sealed space. Within this sealed space are components such as a loop antenna, an electric cylinder, and a swing assembly. The sealed space is filled with gases such as methane, ethylene, hydrogen, or acetylene to create an explosive test environment. The loop antenna can be used as a receiving antenna for 5G radio frequency energy or as a transmitting antenna for 5G radio frequency energy. The electric cylinder drives the swing assembly to swing back and forth, forcing the loop antenna's connection point to undergo a continuous "on-off-on" electrical state change. During this electrical connection state change, the radio frequency energy undergoes gap breakdown, generating a spark. When the spark energy exceeds a threshold, the surrounding explosive gas is at risk of ignition. Based on the threshold power emitted by the 5G radio frequency source and the electromagnetic field strength in the sealed space, the energy threshold and power threshold extracted from the explosive test environment when the loop antenna ignites the explosive gas can be determined, thus providing a basis for the safe use of 5G radio frequency sources in explosive locations.

[0030] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0032] In the attached diagram:

[0033] Figure 1 A schematic diagram of the structure of a test apparatus for igniting explosive gas using radio frequency electromagnetic energy according to an embodiment of the present invention is shown.

[0034] Figures 2-5 The following are angular views of a test apparatus for igniting explosive gases using radio frequency electromagnetic energy according to an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached drawings: 1. Dome rod; 2. Support bracket; 3. Ring antenna bracket; 4. Test platform; 5. Pipe fixing bracket; 6. Electric cylinder bracket; 7. Valve assembly; 8. Adapter shaft; 9. Protective cover; 10. Connecting rod; 11. Main swing rod; 12. Ring antenna; 13. Top component; 14. Ignition wire fixing seat; 15. Auxiliary fixing element; 16. Sealing sleeve fixing seat; 17. Sealing sleeve; 18. Electric cylinder. Detailed Implementation

[0036] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0037] Because the test method recommended in BS6656-2002 was published relatively early, it is only applicable to low-frequency signals not exceeding 1.5MHz and not to 5G frequency band radio frequency signals. Therefore, this invention discloses a test device for igniting explosive gases using radio frequency electromagnetic energy. This device measures the power threshold and energy threshold of 5G radio frequency signals igniting explosive gases, providing a basis for the safe use of 5G radio frequency sources in explosive environments.

[0038] This invention provides an experimental device for igniting explosive gases using radio frequency electromagnetic energy. It mainly consists of a test platform 4, a protective cover 9, and a sealed space. Within this sealed space are components such as a ring antenna 12, an electric cylinder 18, and a swing assembly. The ring antenna 12 serves as the transceiver for 5G radio frequency energy. The electric cylinder 18 drives the ring antenna 12, causing a continuous "on-off-on" electrical state change at its breakpoint. During this electrical connection change, the radio frequency energy undergoes a gap breakdown, generating a spark. When the spark energy exceeds a certain threshold, the explosive gas inside the sealed space is at risk of ignition. The energy threshold and power threshold extracted from the explosive test environment when the ring antenna 12 ignites the explosive gas are determined based on the threshold power emitted by the 5G radio frequency source and the electromagnetic field strength in the sealed space.

[0039] The experimental apparatus of this invention can effectively confirm the electromagnetic power and energy threshold of igniting explosive hazardous locations within an electromagnetic field, solving the problem that current standard test methods are not applicable to the explosion-proof safety assessment of 5G radio frequency signals. It provides more accurate safety threshold parameters for 5G radio frequency sources, and provides reliable theoretical and experimental basis for the installation and use of various wireless products in the future. It also solves the current limitation in explosive locations such as underground coal mines and oil production platforms where power issues restrict the full utilization of 5G technology's advantages such as high bandwidth and low latency. This lays the foundation for the widespread use of wireless products and the effective utilization of 5G products, promotes the application of new 5G technologies in explosive locations such as underground coal mines, and simultaneously promotes the intelligent construction process of special industries.

[0040] To further illustrate and explain the present invention, please refer to the following: Figure 1 The experimental apparatus of the present invention includes: a test platform 4, a protective cover 9, a valve assembly, a ring antenna 12, an electric cylinder 18, and a swing assembly.

[0041] Specifically, a protective cover 9 is attached above the test platform 4, and the two together form a sealed space.

[0042] The valve assembly passes through test platform 4 and extends into the confined space to introduce an explosive gas into the confined space, creating an explosive test environment. Examples of explosive gases include methane, ethylene, hydrogen, or acetylene.

[0043] In this embodiment, the valve assembly includes a valve 7 and a pipe holder 5; wherein, the pipe holder 5 serves as a fixing element for the valve 7, passing through the test platform 4 and extending into the enclosed space. Through the cooperation of the valve 7 and the pipe holder 5, gases such as methane, ethylene, hydrogen, or acetylene can be introduced into the enclosed space to create an explosive test environment.

[0044] Of course, the valve assembly can be configured as one set or as two or more sets, see below. Figures 2-3Two or more valve assemblies are used to introduce different explosive gases to verify the explosion thresholds of different gases. For example, valve assembly A can introduce methane-based gases, and valve assembly B can introduce ethylene-based gases. Valve assemblies A and B can be used individually or in combination to create different test environments.

[0045] In the embodiments described in this specification, the loop antenna 12 is located inside a confined space and has a breakpoint. It is worth noting that the loop antenna 12 can function as either a receiving antenna or a transmitting antenna, thus becoming a medium for transmitting and receiving 5G radio frequency energy. On one hand, the loop antenna 12 resonates with specific frequency signals emitted by a 5G radio frequency source outside the confined space, such as high-frequency signals like 700MHz, 2.1MHz, 2.6MHz, and 3.5MHz, thereby serving as a receiving antenna for 5G radio frequency energy. On the other hand, to reduce energy loss during testing and lower the cost of using a high-power radio frequency source, based on the principle of interchangeability between transmitting and receiving antennas, the loop antenna 12 is used as a transmitting antenna connected to the radio frequency source to release 5G radio frequency energy. With other test procedures unchanged, the power threshold and energy threshold for radio frequency electromagnetic energy to ignite explosive gases can still be tested.

[0046] Further, see Figures 4-5 The loop antenna 12 is fixed to the test platform 4 inside the sealed space by the loop antenna bracket 3; the loop antenna bracket 3 has a position adjustment function to ensure that the loop antenna 12 receives 5G radio frequency energy from outside the sealed space to the maximum extent.

[0047] In this embodiment, the electric cylinder 18 is fixed to the test platform 4 and located outside the enclosed space, used to drive the swing assembly to perform reciprocating motion. Specifically, the electric cylinder 18 is fixed to the test platform 4 by the electric cylinder bracket 6, for example, fixed below the test platform 4 by the electric cylinder bracket 6.

[0048] The swing assembly is controlled by the electric cylinder 18 to reciprocate, and the dome rod 1 in the swing assembly makes intermittent contact with the ring antenna 12 during the reciprocating swing. Since part of the swing assembly is located in a sealed space, the swing assembly is supported by the support bracket 2 of the test platform 4 located inside the sealed space.

[0049] Specifically, the swing assembly includes: a main swing rod 11, a connecting shaft 8, a connecting rod 10, a dome rod 1, and a top component 13 of the dome rod 1. The main swing rod 11 passes through the test platform 4 and extends into the enclosed space; one end of the main swing rod 11 is connected to the electric cylinder 18 via the connecting shaft 8, and the other end is connected to the dome rod 1 via the connecting rod 10. Both the connecting rod 10 and the dome rod 1 are located inside the enclosed space; the dome rod 1 is movably supported by the support bracket 2 and has a top component 13, which makes intermittent contact with the ring antenna 12 during reciprocating swing. During the intermittent contact, since the ring antenna 12 has a break point, the ring antenna itself is in a "broken" state. When the top component 13 contacts the ring antenna 12, it can compensate for the break point of the ring antenna 12, thus "connecting"; when the top component 13 and the ring antenna 12 are disconnected, it is "broken".

[0050] Furthermore, since the main pendulum rod 11 needs to pass through the test platform 4, in order to ensure its sealing performance, the contact position between the main pendulum rod 11 and the test platform 4 is sealed with a sealing sleeve fixing seat 16 and a sealing sleeve 17; the sealing sleeve fixing seat 16 is used to fix the sealing sleeve 17 to the test platform 4. Optionally, the sealing sleeve fixing seat 16 is fixed by an auxiliary fixing element 15.

[0051] In this embodiment of the specification, a standard igniter is provided inside the sealed space. The standard igniter is fixed to the test platform 4 inside the sealed space via an ignition wire fixing seat 14, and is used to verify whether the injected explosive gas can be ignited.

[0052] During testing, the electric cylinder 18 drives the swing assembly to swing back and forth, and intermittently contacts the loop antenna 12 through the dome rod 1, forcing the breakpoint of the loop antenna 12 to undergo a continuous "on-off-on" electrical state change. During the change of electrical connection state, 5G radio frequency energy undergoes gap breakdown to generate sparks. When the spark energy exceeds the threshold, the surrounding explosive gas is at risk of being ignited. The energy threshold and power threshold extracted from the explosive test environment when the loop antenna 12 ignites the explosive gas are determined based on the threshold power emitted by the 5G radio frequency source and the electromagnetic field strength in the confined space.

[0053] Based on the above description, the present invention can achieve the following effects:

[0054] This invention discloses an experimental apparatus for igniting explosive gases using radio frequency electromagnetic energy. It mainly consists of a test platform, a protective cover 9 forming a sealed space, a ring antenna, an electric cylinder, and a swing assembly within the sealed space. The sealed space is filled with gases such as methane, ethylene, hydrogen, or acetylene to create an explosive test environment. The ring antenna can be used as a receiving antenna for 5G radio frequency energy or as a transmitting antenna for 5G radio frequency energy. The electric cylinder drives the swing assembly to swing back and forth, forcing the breakpoint of the ring antenna to undergo a continuous "on-off-on" electrical state change. During this electrical connection state change, the radio frequency energy undergoes gap breakdown, generating sparks. When the spark energy exceeds a threshold, the surrounding explosive gas is at risk of ignition. Based on the threshold power emitted by the 5G radio frequency source and the electromagnetic field strength in the sealed space, the energy threshold and power threshold extracted from the explosive test environment when the ring antenna ignites the explosive gas can be determined, thus providing a basis for the safe use of 5G radio frequency sources in explosive locations.

[0055] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0056] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A test apparatus for the ignition of an explosive atmosphere by radio frequency electromagnetic energy, characterised in that, The utility model relates to a test platform, a protective cover is arranged on the test platform to form a sealed space, a valve assembly is arranged through the test platform and extends into the sealed space to introduce explosive gas into the sealed space to form an explosive test environment, a loop antenna is arranged in the sealed space and has a breakpoint, and the loop antenna resonates with a specific frequency signal emitted by a 5G radio frequency source outside the sealed space to serve as a receiving antenna of 5G radio frequency energy, an electric cylinder is fixed to the test platform and outside the sealed space, a swing assembly is controlled by the electric cylinder to swing back and forth, and a dome rod in the swing assembly intermittently contacts the loop antenna during the swing back and forth, during the test, the electric cylinder drives the swing assembly to swing back and forth, and the dome rod intermittently contacts the loop antenna to force the breakpoint of the loop antenna to continuously change between an on state and an off state, during the change between the on state and the off state, the 5G radio frequency energy is intermittently broken down to generate sparks, when the energy of the sparks exceeds a threshold value, the surrounding explosive gas has a risk of being ignited, and the threshold value of the energy and the power threshold value of the loop antenna drawn from the explosive test environment when igniting the explosive gas are determined according to the threshold power of the 5G radio frequency source and the electromagnetic field intensity in the sealed space. The valve assembly includes a valve and a pipe fixing frame. The pipe fixing frame serves as a fixing element of the valve, passes through the test platform, and extends into the sealed space. There are two or more valve assemblies, and the two or more valve assemblies respectively introduce different explosive gases to verify the explosive threshold values of different explosive gases. The loop antenna is fixed to the test platform in the sealed space by a loop antenna support. The loop antenna support has a pose adjustment function to ensure that the loop antenna maximally receives the 5G radio frequency energy outside the sealed space. The loop antenna serves as a transmitting antenna connected to a radio frequency source to release 5G radio frequency energy.

2. The test device of claim 1, wherein The electric cylinder is fixed to the test platform by an electric cylinder support. The swing assembly includes:

3. The test device of claim 2, wherein a main swing rod that passes through the test platform and extends into the sealed space, one end of the main swing rod is connected to the electric cylinder by a transfer shaft, the other end of the main swing rod is connected to the dome rod by a connecting rod, and the connecting rod and the dome rod are both in the sealed space, 4. The test device of claim 1, wherein the dome rod has a top part that intermittently contacts the loop antenna during the swing back and forth. The contact position of the main swing rod with the test platform has a sealing sleeve fixing seat and a sealing sleeve to realize sealing.

5. An assay device as claimed in claim 1 or 4, characterised in that, The sealing sleeve fixing seat is used to fix the sealing sleeve to the test platform.

6. The test device of claim 1, wherein The swing assembly is supported by a support support of the test platform in the sealed space.

7. The test device of claim 1, wherein The sealed space has a standard igniter to verify whether the injected explosive gas can be ignited. The standard igniter is fixed to the test platform in the sealed space by an ignition lead fixing seat. ​ 8. The test device of claim 7, wherein, ​ ​ 9. The test device of claim 1 or 7, wherein, ​ 10. The test device of claim 1, wherein, ​ ​

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