Granular Fluid Central Temperature Detection Device and Its Usage Method

Abstract

The present invention relates to a device for detecting the central temperature of a particle fluid, comprising: a shell, comprising an upper cone shell, a columnar shell and a lower cone shell, the bottom of the upper cone shell being connected to the top of the columnar shell, and the bottom of the columnar shell being connected to the top of the lower cone shell; a reconstruction cavity, arranged in the shell; the reconstruction cavity comprising a cone cavity, a columnar cavity and an isolation baffle; the bottom of the cone cavity being connected to the top of the columnar cavity, the outer edge of the isolation baffle being connected to the inner wall of the columnar cavity, an inclined groove being provided on the isolation baffle, a rectangular flow groove being provided in the middle part of the bottom of the inclined groove, and the rectangular flow groove passing through the bottom of the inclined groove; an impeller mechanism, arranged in the inclined groove, for driving the particle fluid falling into the inclined groove to rotate and flow out of the rectangular flow groove after settling; a conveying device, connected to the impeller mechanism, for driving the impeller mechanism to rotate.

Description

Technical Field

[0001] The present invention relates to the technical field of particle fluid temperature measurement, and in particular to a particle fluid center temperature detection device and a use method thereof. Background Art

[0002] The accelerator-driven sub-critical system (ADS) is a powerful tool for transmuting nuclear waste, effectively utilizing nuclear resources, and generating nuclear energy. It is a preferred technological approach for the sustainable development of fission nuclear energy. It consists of a high-energy, high-intensity proton accelerator, a high-power spallation target, and a subcritical reactor. The principle is that a proton beam, accelerated by a linear accelerator, directly impacts a heavy metal spallation target, generating neutrons that drive the subcritical reactor. ADS not only transmutes long-lived nuclear waste into short-lived waste, thereby reducing radioactive waste reserves and toxicity, but also converts some elements into more valuable ones. Furthermore, the inherent safety of ADS, due to its use of a deep subcritical reactor, has earned it widespread international recognition and development.

[0003] In ADS, high-power spallation targets serve as the coupling between high-energy, high-intensity proton accelerators and subcritical reactors, and their physical properties are crucial to ADS. Based on extensive theoretical calculations and experimental studies of solid and liquid heavy metal targets, and after comparative studies, the ADS research team at the Chinese Academy of Sciences (CAS) has proposed and developed a new type of fluidized solid particle spallation target ("particle flow target") to meet the needs of industrial-grade ADS. Compared to solid and liquid targets, particle flow targets offer improved neutron economy and heat removal performance, meeting the needs of further development in nuclear physics. However, while particle flow targets offer significant advantages, they also present a number of technical challenges.

[0004] Measuring the temperature at the center of a particle flow is one of the most pressing technical challenges. Because the particle flow target medium is a group of solid spherical particles, the individual particles deposit a significant amount of heat under beam bombardment. Excessive temperatures can easily cause the spheres to deform, and in severe cases, even melt. Therefore, temperature measurement is extremely important for particle flow targets. However, the two traditional temperature measurement methods: contact-based temperature measurement using thermosensitive elements (such as thermocouples and optical fibers) and non-contact temperature measurement using infrared induction (thermal radiation) cannot directly measure the temperature at the center of a particle flow. Summary of the Invention

[0005] In view of the above problems, the purpose of the present invention is to provide a device for detecting the center temperature of a granular fluid and a method for using the same, which can directly measure the temperature at the center of the granular fluid accurately.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The particle fluid central temperature detection device described in the present invention includes: a shell, including an upper cone shell, a cylindrical shell and a lower cone shell, the bottom of the upper cone shell is connected to the top of the cylindrical shell, and the bottom of the cylindrical shell is connected to the top of the lower cone shell; a reconstruction cavity, arranged in the shell; the reconstruction cavity includes a cone cavity, a cylindrical cavity and an isolation baffle; the bottom of the cone cavity is connected to the top of the cylindrical cavity, the outer edge of the isolation baffle is connected to the inner wall of the cylindrical cavity, and an inclined groove is provided on the isolation baffle, and a rectangular flow groove is provided in the middle part of the bottom of the inclined groove, and the rectangular flow groove passes through the bottom of the inclined groove; an impeller mechanism is arranged in the inclined groove, used to drive the particle fluid falling into the inclined groove to rotate and flow out from the rectangular flow groove after settling; a conveying device, connected to the impeller mechanism, used to drive the impeller mechanism to rotate.

[0008] The device for detecting the central temperature of the particle fluid preferably comprises the impeller mechanism including a rotating main shaft, an impeller and a bearing; the lower end of the rotating main shaft is connected to the impeller through the bearing; the upper end of the rotating main shaft is provided with a first gear, and the first gear is horizontally sleeved on the rotating main shaft.

[0009] The device for detecting the central temperature of the particle fluid, preferably, the conveying device includes a conveying rod and a second gear; the first end of the conveying rod is arranged outside the upper conical shell for connecting to the motor; the second end of the conveying rod passes through the upper conical shell and the cylindrical cavity in sequence; the second gear is vertically sleeved on the second end of the conveying rod; the second end of the conveying rod is connected to the rotating main shaft through the engagement of the first gear and the second gear.

[0010] The device for detecting the central temperature of the particle fluid is preferably provided with a protective cover on the upper end of the rotating main shaft; a penetrating piece is provided through the upper conical shell and the cylindrical cavity, and one end of the penetrating piece extends into the protective cover; and the transmission rod is provided in the penetrating piece.

[0011] The device for detecting the central temperature of the particle fluid preferably further comprises an imaging back plate, which is vertically arranged at the bottom of the isolation baffle and located on one side of the rectangular flow channel.

[0012] The device for detecting the central temperature of the particle fluid preferably further includes an observation window, which is arranged between the cylindrical shell and the cylindrical cavity, and the observation window connects the cylindrical shell and the cylindrical cavity together; an infrared thermal imager is provided at the position of the observation window, and the infrared thermal imager is used to image the temperature of the freely falling two-dimensional plane fluid, and upload it to the post-processing component in real time, and finally output the real-time temperature of the center of the particle fluid.

[0013] In the device for detecting the central temperature of a granular fluid, preferably, an upper flange is provided on the top of the upper cone shell, and a lower flange is provided on the bottom of the lower cone shell.

[0014] The present invention also provides a method for using a device for detecting the central temperature of a particle fluid, comprising the following steps:

[0015] The granular fluid enters from the top of the shell, wherein the granular fluid at the center enters the conical cavity and flows into the chute;

[0016] The motor drives the conveyor to rotate, and the conveyor drives the impeller mechanism to rotate, so that the granular fluid flowing into the chute rotates and settles in the rectangular flow channel. The spatial form of the granular fluid in the rectangular flow channel is reconstructed from a three-dimensional cylindrical shape to a two-dimensional plane shape;

[0017] The infrared thermal imager located at the observation window images the temperature of the freely falling two-dimensional plane fluid and uploads it to the post-processing component in real time, and finally outputs the real-time temperature of the center of the particle fluid.

[0018] The present invention has the following advantages due to the adoption of the above technical solution:

[0019] Compared with traditional temperature measurement methods, the particle fluid center temperature detection device and its use method provided by the present invention are not limited by service life, have a faster response time, a wider temperature measurement range, and higher measurement accuracy, and are also not affected by strong radiation environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the connection between the conveying rod device and the impeller mechanism of the present invention.

[0023] The symbols in the accompanying drawings represent the following:

[0024] 1-shell; 101-upper conical shell; 102-cylindrical shell; 103-lower conical shell; 2-reconstruction chamber; 201-conical chamber; 202-cylindrical chamber; 203-isolation baffle; 3-chute; 4-rectangular flow channel; 5-impeller mechanism; 501-rotating main shaft; 502-impeller; 503-bearing; 6-transmission device; 7-protective cover; 8-through-piece; 9-imaging backboard; 10-observation window; 11-upper flange; 12-lower flange. DETAILED DESCRIPTION

[0025] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0026] The present invention provides a device for detecting the center temperature of a granular fluid. Two traditional temperature measurement methods—contact methods using thermosensitive elements (such as thermocouples and optical fibers) and non-contact methods using infrared induction (thermal radiation)—are incapable of directly measuring the temperature at the center of a granular fluid. This device, by providing a reconstructed cavity within a housing, concentrates the granular fluid at the center within a chute. An impeller mechanism rotates and settles the granular fluid within the chute, causing it to flow out through a rectangular flow channel at the bottom. Finally, an infrared thermal imager located at an observation window captures the temperature of the freely falling two-dimensional planar fluid, which is then uploaded to a post-processing unit in real time, ultimately outputting the real-time temperature at the center of the granular fluid. Therefore, the present invention can directly and accurately measure the temperature at the center of a granular fluid.

[0027] like Figure 1As shown, the device for detecting the central temperature of a particle fluid according to the present invention comprises: a housing 1, comprising an upper cone housing 101, a cylindrical housing 102 and a lower cone housing 103, wherein the bottom of the upper cone housing 101 is connected to the top of the cylindrical housing 102, and the bottom of the cylindrical housing 102 is connected to the top of the lower cone housing 103; a reconstruction chamber 2, disposed in the housing 1; the reconstruction chamber 2 comprises a cone chamber 201, a cylindrical chamber 202 and an isolation baffle 203; the bottom of the cone chamber 201 is connected to the top of the cylindrical housing 102, and the bottom of the cylindrical housing 102 is connected to the top of the lower cone housing 103; The top of the columnar cavity 202 is connected to the top of the columnar cavity 202, the outer edge of the isolation baffle 203 is connected to the inner wall of the columnar cavity 202, the isolation baffle 203 is provided with an inclined groove 3, and the middle part of the bottom of the inclined groove 3 is provided with a rectangular flow groove 4, which runs through the bottom of the inclined groove 3; the impeller mechanism 5 is provided in the inclined groove 3, and is used to drive the particle fluid falling into the inclined groove 3 to rotate and flow out from the rectangular flow groove 4 after sedimentation; the conveying device 6 is connected to the impeller mechanism 5, and is used to drive the impeller mechanism 5 to rotate.

[0028] In the above embodiment, preferably, the impeller mechanism 5 includes a rotating main shaft 501, an impeller 502 and a bearing 503; the lower end of the rotating main shaft 501 is connected to the impeller 502 through the bearing 503; the upper end of the rotating main shaft 501 is provided with a first gear 504 (see Figure 2 ), the first gear 504 is horizontally sleeved on the rotating main shaft 501.

[0029] In the above embodiment, preferably, the conveying device 6 includes a conveying rod 601 and a second gear 602 (see Figure 2 ); The first end of the transmission rod 601 is arranged outside the upper conical shell 101 for connecting to a motor (not shown in the figure); the second end of the transmission rod 601 passes through the upper conical shell 101 and the cylindrical cavity 202 in sequence; the second gear 602 is vertically sleeved on the second end of the transmission rod 601; the second end of the transmission rod 601 is connected to the rotating main shaft 501 through the engagement of the first gear 504 and the second gear 602. Thus, the motor drives the transmission rod 601 to rotate, thereby driving the rotating main shaft 501 to rotate, and then driving the impeller to rotate, so that the granular fluid entering the center position of the chute 3 rotates and flows out of the rectangular flow channel, thereby reconstructing the spatial form of the granular fluid from a three-dimensional cylindrical shape to a two-dimensional plane shape.

[0030] In the above embodiment, preferably, a protective cover 7 is provided on the upper end of the rotating spindle 501; a penetration piece 8 is provided through the upper conical housing 101 and the cylindrical cavity 202, with one end of the penetration piece 8 extending into the protective cover 7; and the transmission rod 601 is disposed within the penetration piece 8. Thus, the protective cover 7 can protect the rotating spindle 501, and the penetration piece 8 can protect the transmission rod 601.

[0031] In the above embodiment, preferably, the present invention further includes an imaging back plate 9 , which is vertically arranged at the bottom of the isolation baffle 203 and located on one side of the rectangular flow channel 4 .

[0032] In the above embodiment, preferably, the present invention further includes an observation window 10, which is arranged between the cylindrical shell 102 and the cylindrical cavity 202, and the observation window 10 connects the cylindrical shell 102 and the cylindrical cavity 202 together; an infrared thermal imager (not shown in the figure) is provided at the position of the observation window 10, and the infrared thermal imager is used to image the temperature of the freely falling two-dimensional plane fluid, and upload it to the post-processing component in real time, and finally output the real-time temperature of the center of the particle fluid.

[0033] In the above embodiment, preferably, an upper flange 11 is provided at the top of the upper cone shell 101 , and a lower flange 12 is provided at the bottom of the lower cone shell 103 .

[0034] The present invention also provides a method for using a device for detecting the central temperature of a particle fluid, comprising the following steps:

[0035] (1) The granular fluid enters from the top of the shell, where the granular fluid at the center enters the conical cavity and flows into the chute;

[0036] (2) The motor drives the conveyor to rotate, and the conveyor drives the impeller mechanism to rotate, so that the granular fluid flowing into the chute rotates and settles in the rectangular flow channel. The spatial form of the granular fluid in the rectangular flow channel is reconstructed from a three-dimensional cylindrical shape to a two-dimensional plane shape;

[0037] (3) The infrared thermal imager located at the observation window images the temperature of the freely falling two-dimensional plane fluid and uploads it to the post-processing component in real time, and finally outputs the real-time temperature of the center of the particle fluid.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for detecting the central temperature of a particle fluid, characterized in that: include: The housing comprises an upper cone housing, a cylindrical housing and a lower cone housing, wherein the bottom of the upper cone housing is connected to the top of the cylindrical housing, and the bottom of the cylindrical housing is connected to the top of the lower cone housing; A reconstruction chamber is disposed within the housing; the reconstruction chamber includes a conical cavity, a cylindrical cavity, and an isolation baffle; the bottom of the conical cavity is connected to the top of the cylindrical cavity, the outer edge of the isolation baffle is connected to the inner wall of the cylindrical cavity, the isolation baffle is provided with an inclined groove, and a rectangular flow groove is provided in the middle of the bottom of the inclined groove, and the rectangular flow groove passes through the bottom of the inclined groove; An impeller mechanism is provided in the chute, and is used to drive the particle fluid falling into the chute to rotate and flow out of the rectangular flow channel after settling; a transmission device connected to the impeller mechanism and used to drive the impeller mechanism to rotate; Wherein, it also includes an imaging back plate, which is vertically arranged at the bottom of the isolation baffle and located on one side of the rectangular flow channel; Wherein, it further includes an observation window, which is arranged between the cylindrical shell and the cylindrical cavity, and the observation window connects the cylindrical shell and the cylindrical cavity into one body; An infrared thermal imager is provided at the position of the observation window, and is used to image the temperature of the freely falling two-dimensional plane fluid, and upload it to the post-processing component in real time, and finally output the real-time temperature of the center of the particle fluid.

2. The device for detecting the central temperature of a particle fluid according to claim 1, characterized in that: The impeller mechanism includes a rotating main shaft, an impeller and a bearing; The lower end of the rotating main shaft is connected to the impeller through the bearing; A first gear is provided at the upper end of the rotating main shaft, and the first gear is horizontally sleeved on the rotating main shaft.

3. The device for detecting the central temperature of a particle fluid according to claim 2, characterized in that: The transmission device includes a transmission rod and a second gear; the first end of the transmission rod is arranged outside the upper cone housing for connecting to the motor; The second end of the transmission rod passes through the upper cone shell and the cylindrical cavity in sequence; The second gear is vertically sleeved on the second end of the transmission rod; The second end of the transmission rod is connected to the rotating main shaft through the engagement of the first gear and the second gear.

4. The device for detecting the central temperature of a particle fluid according to claim 3, characterized in that: The upper end of the rotating main shaft is provided with a protective cover; A penetrating piece is provided through the upper cone shell and the cylindrical cavity, and one end of the penetrating piece extends into the protective cover; The transmission rod is arranged in the penetration piece.

5. The device for detecting the central temperature of a particle fluid according to claim 1, characterized in that: An upper flange is provided on the top of the upper cone shell, and a lower flange is provided on the bottom of the lower cone shell.

6. A method for using the device for detecting the central temperature of a particle fluid according to any one of claims 1 to 5, characterized in that: The steps include: The granular fluid enters from the top of the shell, wherein the granular fluid at the center enters the conical cavity and flows into the chute; The motor drives the conveyor to rotate, and the conveyor drives the impeller mechanism to rotate, so that the granular fluid flowing into the chute rotates and settles in the rectangular flow channel. The spatial form of the granular fluid in the rectangular flow channel is reconstructed from a three-dimensional cylindrical shape to a two-dimensional plane shape; The infrared thermal imager located at the observation window images the temperature of the freely falling two-dimensional plane fluid and uploads it to the post-processing component in real time, and finally outputs the real-time temperature of the center of the particle fluid.

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