A method for monitoring and processing of gas environment under electron irradiation accelerator beam

Abstract

The application discloses a kind of for electron irradiation accelerator beam under gas environment monitoring and processing method, it is related to electron irradiation accelerator technical field, including the following steps: ozone generated by electron beam irradiation is through shielding body upper side ventilation system first gas collection port, is transported to shielding body outer exhaust duct by exhaust duct in shielding body, most of probe is excluded from beam under high-dose irradiation environment, ensure stable operation, while ozone concentration and smoke state of the probe can be detected in beam under irradiation space.The application combines the design structure of shielding body and gas drainage method, realizes the real-time monitoring of electron beam irradiation space environment gas.According to the structural characteristics of shielding body, the ventilation and beam under environment detection system are integrated, the beam under gas environment detection problem is solved, the service life is prolonged, the irradiation accelerator operation stability is improved, the humidity is monitored by humidity sensor and the air supply amount is adjusted, the real-time monitoring is realized, and the pollution of harmful gas to irradiation space environment is reduced.

Description

Technical Field

[0001] This invention relates to the field of electron irradiation accelerator technology, and more specifically to a method for monitoring and processing the gas environment under an electron irradiation accelerator beam. Background Technology

[0002] Currently, electron beam accelerators are widely used in processing fields such as irradiation sterilization, food preservation, and material modification, demonstrating outstanding sterilization effects and high processing efficiency. In recent years, irradiation accelerators have entered the market as high-end technology products. With the increasing market penetration of industrial electron beam accelerators, intelligent monitoring and control of the accelerator's working environment has become particularly important. In particular, online monitoring of ozone and smoke under the electron beam is crucial for the safe operation of the accelerator. Due to interference from electron beam irradiation and control signals, monitoring the concentration of ozone and smoke in the electron beam irradiation area is challenging. Furthermore, electron beam irradiation of air generates large amounts of harmful ozone. Existing technologies primarily focus on the detection and collection of generated ozone, lacking pretreatment methods to inhibit ozone generation at its source. This patent addresses this technical difficulty by proposing a method for monitoring and treating the environment under the electron beam accelerator, combining online monitoring and gas pretreatment to effectively solve this problem. Summary of the Invention

[0003] The purpose of this invention is to provide a method for monitoring and treating the gas environment under an electron irradiation accelerator beam. This method effectively monitors ozone and smoke concentrations under the electron irradiation accelerator beam, establishes a safety interlock with the electron irradiation accelerator control system, and reduces ozone generation at the source through gas pretreatment, thereby effectively ensuring stable accelerator operation and the safety of equipment and personnel.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A method for monitoring and treating the gas environment under an electron irradiation accelerator beam includes the following steps:

[0006] The ozone generated by electron beam irradiation is transported through the first gas collection port of the ventilation system on the upper side of the shield to the exhaust duct outside the shield, and most of the ozone is discharged through the exhaust duct inside the shield. The concentration of residual ozone and smoke gas in the irradiation space environment needs to be tested in accordance with the relevant standards for industrial electron irradiation accelerators.

[0007] The detector is located far from the high-dose irradiation environment under the beam, ensuring the stable operation of the gas monitoring detector. At the same time, the detector can detect the ozone concentration and smoke status of the irradiated space environment. This invention achieves real-time monitoring of the gas in the electron beam irradiated space environment by combining the shielding design structure and the gas diversion method.

[0008] Furthermore, the fan, gas detector, and gas pretreatment device are installed on the outer wall of the electron beam shield, effectively reducing direct irradiation and electronic interference from the electron beam and X-rays.

[0009] Furthermore, the gas irradiated by the beam is guided by a fan through a gas collection port and a pre-stage delivery pipeline to the ozone detector, smoke detector, and humidity detector. The detectors then monitor the gas status and provide feedback to the accelerator's central control system for interlocking control.

[0010] Furthermore, the gas detected by the detector is discharged into the exhaust duct inside the shield through the final delivery pipe, and then discharged outside the shield with the air duct.

[0011] Furthermore, by using a makeup air fan and a makeup air duct inside the shield to maintain the gas pressure inside the shield, and by using a gas pretreatment device to perform primary filtration and atomized spraying on the added gas to increase the relative humidity of the air, the ozone decomposition is accelerated and the ozone generation is inhibited.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. Based on the structural characteristics of the shielding body, this invention integrates the ventilation system and the under-beam environment detection system to form an interlocked control system, effectively solving the problem of difficult under-beam gas environment detection.

[0014] 2. This invention installs the exhaust fan, humidity sensor, ozone detector, smoke detector, make-up air fan, and gas pretreatment device on the outer wall of the shield, effectively reducing the direct irradiation and signal interference of the detector by electron beams and X-rays, extending its service life, and enhancing the operational stability of the irradiation accelerator.

[0015] 3. This invention utilizes a gas pretreatment device to increase the relative humidity of the air inside the shield through primary filtration and atomized spraying. Water molecules act as catalysts in the chain decomposition reaction of ozone, accelerating its conversion into oxygen. On the other hand, they can inhibit ozone generation. The humidity inside the shield is monitored by a humidity sensor, and the air supply volume is adjusted to control the humidity.

[0016] 4. This invention utilizes a ventilation system to divert gas from the environment under the accelerator beam during operation, thereby enabling real-time monitoring of the environment under the accelerator beam.

[0017] 5. This invention utilizes a final-stage delivery pipeline to return the residual gas after detection to the exhaust duct inside the shield, forming a closed-loop gas delivery system and reducing the pollution of the irradiated space environment by harmful gases.

[0018] 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, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the shielding body and air duct design for the irradiation accelerator of the present invention.

[0020] Figure 2 This is a schematic diagram of the space gas environment monitoring and processing system under the irradiation accelerator beam of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Shielding enclosure; 2. Ventilation system; 201. First gas collection port; 202. Exhaust duct inside the shielding enclosure; 203. Exhaust duct outside the shielding enclosure; 204. Second gas collection port; 205. Pre-stage delivery pipe; 206. Exhaust fan; 207. Ozone detector; 208. Smoke detector; 209. Humidity detector; 210. Final stage delivery pipe; 211. Gas inlet port; 212. Makeup air duct inside the shielding enclosure; 213. Makeup air fan; 214. Gas pretreatment device; Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0025] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Please see Figure 1 According to a preferred embodiment of this application, the present invention mainly consists of a shield 1 and a ventilation system 2. The ventilation system 2 mainly includes a first gas collection port 201, an exhaust duct inside the shield 202, an exhaust duct outside the shield 203, a second gas collection port 204, a pre-stage conveying pipe 205, an exhaust fan 206, an ozone detector 207, a smoke detector 208, a humidity detector 209, a final stage conveying pipe 210, a gas inlet 211, an inlet air duct inside the shield 212, an inlet fan 213, and a gas pretreatment device 214.

[0027] The ozone generated by electron beam irradiation is mostly transported through the first gas collection port 201 to the exhaust duct 203 outside the shielding body via the exhaust duct 202 inside the shielding body. The concentration of residual ozone gas in the irradiated space environment needs to be strictly monitored according to relevant standards for industrial electron irradiation accelerators. To ensure the stable operation of the gas monitoring detector, the detector must be located far from the high-dose irradiation environment under the beam. Simultaneously, the detector must be able to effectively detect the ozone gas concentration, relative humidity, and smoke conditions in the irradiated space environment under the beam. This invention combines the shielding design structure with gas diversion and pretreatment methods to achieve real-time monitoring and treatment of the gas in the electron beam irradiated space environment. This invention installs the exhaust fan 206, ozone detector 207, smoke detector 208, humidity detector 209, make-up air fan 213, and gas pretreatment device 214 on the outer wall of the electron beam shielding body 1, which can effectively reduce direct irradiation and electron interference from the electron beam and X-rays. This invention utilizes an exhaust fan 206 to guide the gas from the under-beam irradiated space environment through a second gas collection port 204 and a pre-stage delivery pipe 205 to the locations of ozone detectors 207, smoke detectors 208, and humidity detectors 209. Each detector monitors the gas state and feeds feedback to the accelerator's central control system for interlocking control. The gas detected by the detectors is then discharged through a final-stage delivery pipe 209 into the exhaust duct 202 within the shield, and subsequently discharged outside the shield. This invention utilizes a make-up air fan 213 and an make-up air duct 212 within the shield to maintain gas pressure within the shield. A gas pretreatment device 214 performs primary filtration and atomized spraying on the incoming gas to increase relative humidity, thereby accelerating ozone decomposition and inhibiting ozone formation.

[0028] In summary, this invention provides a method for monitoring and processing the gas environment under an electron irradiation accelerator beam. Based on the structural characteristics of the shielding structure, this method integrates a ventilation system and a beam-under-beam environment detection system to construct an interlocked control system, effectively addressing the challenge of detecting the gas environment under the beam. The exhaust fan, humidity sensor, ozone detector, smoke detector, make-up air fan, and gas pretreatment device are installed on the outer wall of the shielding structure, significantly reducing the direct irradiation and signal interference of the detectors by electron beams and X-rays, extending their service life, and improving the operational stability of the irradiation accelerator. The gas pretreatment device uses primary filtration and atomized spraying to increase the relative humidity of the air inside the shielding structure. Water molecules act as a catalyst to promote the chain decomposition reaction of ozone, accelerating its conversion into oxygen, and also inhibit ozone generation. The humidity sensor monitors the ambient humidity inside the shielding structure and adjusts the make-up air volume accordingly. The ventilation system guides the gas under the beam during accelerator operation, enabling real-time monitoring of the accelerator beam-under-beam environment. The residual gas detected is returned to the exhaust duct inside the shielding structure via a final-stage delivery pipeline, creating a closed-loop gas delivery system and reducing the pollution of the irradiated space environment by harmful gases.

[0029] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method for monitoring and processing the gas environment under an electron irradiation accelerator beam, characterized in that, Includes the following steps: The ozone generated by electron beam irradiation is transported through the first gas collection port of the ventilation system on the upper side of the shield to the exhaust duct outside the shield, and most of the ozone is discharged through the exhaust duct inside the shield. The concentration of residual ozone and smoke gas in the irradiation space environment needs to be tested in accordance with the relevant standards for industrial electron irradiation accelerators. The detector is located far from the high-dose irradiation environment under the beam, ensuring the stable operation of the gas monitoring detector. At the same time, the detector can detect the ozone concentration and smoke status of the irradiated space environment. This invention achieves real-time monitoring of the gas in the electron beam irradiated space environment by combining the shielding design structure and the gas diversion method.

2. The method for monitoring and processing the gas environment under an electron irradiation accelerator beam as described in claim 1, characterized in that, The fan, gas detector, and gas pretreatment device are installed on the outer wall of the electron beam shield to reduce direct irradiation and electronic interference from the electron beam and X-rays.

3. The method for monitoring and processing the gas environment under an electron irradiation accelerator beam as described in claim 1, characterized in that, The gas irradiated by the beam is drawn through a gas collection port and a pre-stage delivery pipeline to the ozone detector, smoke detector, and humidity detector. The detectors then monitor the gas status and provide feedback to the accelerator's central control system for interlocking control.

4. The method for monitoring and processing the gas environment under an electron irradiation accelerator beam as described in claim 1, characterized in that, The gas detected by the detector is discharged into the exhaust duct inside the shield through the final delivery pipe, and then discharged outside the shield with the air duct.

5. The method for monitoring and processing the gas environment under an electron irradiation accelerator beam as described in claim 1, characterized in that, The gas pressure inside the shield is maintained by using a make-up air fan and a make-up air duct inside the shield. The gas is pre-treated by a gas pretreatment device to perform primary filtration and atomized spraying to increase the relative humidity of the air, thereby accelerating ozone decomposition and inhibiting ozone generation.

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