Spherical particle sampling device

Abstract

The utility model relates to the technical field of pebble bed type high-temperature gas cooled reactors, in particular to a spherical particle sampling device, which comprises particle feeding equipment, a sampling device and a sampling device, the stock bin is connected with the particle feeding equipment and is used for storing to-be-sampled spherical particles; the feeding mechanism communicates with the stock bin and is used for changing the feeding speed of the stock bin by adjusting the vibration frequency; the material distributing mechanism is connected with the feeding mechanism and is used for uniformly dividing and moving the to-be-sampled spherical particles; the sampling mechanism comprises a material distributing cover plate device and a material collecting and sampling device, the material distributing cover plate device is connected with the material distributing mechanism, the material distributing cover plate device is connected with the material collecting and sampling device, and the material collecting and sampling device is used for collecting the uniformly divided to-be-sampled spherical particles by ascending or descending the material distributing cover plate device. Therefore, the problem that existing equipment cannot meet the requirement for rapid sampling of large-flux spherical particles and the like is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pebble bed high temperature gas cooled reactor, especially to a kind of spherical particle sampling device. BACKGROUND

[0002] The ceramic fuel element used in China's pebble bed high temperature gas cooled reactor has a diameter of 60 mm and is dispersed in the graphite matrix of the fuel area in the form of spherical coated particles (TRISO). During the large-scale production of spherical fuel elements, strict quality control of several indicators of intermediate products UO2 nuclear core, coated particles, dressed particles and matrix graphite ball is required. Therefore, sample mixing sampling and performance testing must be carried out according to certain sampling rules.

[0003] With the continuous increase of the production scale of spherical fuel elements, the flux of spherical particle mixing batch reaches several hundred kg / d, and sampling is carried out on this basis. It is necessary to research large-flux spherical particle rapid sampling equipment and establish sampling rules and methods. That is, after the rapid mixing and homogenization of a certain batch and flux of intermediate products of fuel elements, a certain proportion of representative particle samples are randomly taken out on the discharge conveying line, and the deviation of the number of samples in each collection container is minimized for performance testing. The remaining particle samples and the samples that have passed the test and have not been damaged are collected and returned to the warehouse. SUMMARY

[0004] The utility model provides a kind of spherical particle sampling device to solve the problems that existing equipment cannot meet large-flux spherical particle rapid sampling.

[0005] The utility model provides a kind of spherical particle sampling device, comprising: particle feeding equipment for conveying to be sampled spherical particles;Bin, the bin is connected with the particle feeding equipment, for storing the to be sampled spherical particles;Feeding mechanism, the feeding mechanism is communicated with the bin, for changing the feeding speed of the bin by adjusting the vibration frequency;Material distribution mechanism, the material distribution mechanism is connected with the feeding mechanism, for uniformly dividing and moving the to be sampled spherical particles;Sampling mechanism, the sampling mechanism includes material distribution cover plate equipment and material collection sampling equipment, the material distribution cover plate equipment is connected with the material distribution mechanism, the material distribution cover plate equipment is connected with the material collection sampling equipment, for collecting the to be sampled spherical particles after uniform division by rising or lowering the material distribution cover plate equipment.

[0006] Optionally, the feeding mechanism includes a feeding groove and a vibration device, wherein the feeding groove is used to convey the to be sampled spherical particles in the bin to the material distribution mechanism;The vibration device is arranged at the bottom of the feeding groove, and is used to change the feeding speed of the bin by adjusting the vibration frequency.

[0007] Optionally, the material distribution mechanism comprises a motor, a rotating bearing, a rotating disc and a material distribution disc, wherein the motor is used to adjust the rotating speed of the rotating disc to match the vibration frequency of the feeding mechanism, and drive the rotating disc to rotate to control the speed of feeding and conveying; the bearing center of the rotating bearing is hollow, the upper half of the bearing center is connected with the feeding mechanism, and the lower part of the bearing center is connected with the rotating disc, which is used to convey the to-be-sampled spherical particles into the rotating disc; the rotating disc is a cavity structure, the lower end of the feeding port of the rotating disc is an inclined hollow trough, and the outlet end of the trough of the rotating disc is aligned with the material distribution disc, which is used to convey the to-be-sampled spherical particles to the material distribution disc; the material distribution disc is used to uniformly divide and move the to-be-sampled spherical particles.

[0008] Optionally, the material distribution disc divides the to-be-sampled spherical particles into N equal areas, and a partition plate is arranged between each equal area, which is used to uniformly divide the to-be-sampled spherical particles and make the amount of the to-be-sampled spherical particles entering each equal area the same, wherein N is a positive integer greater than or equal to 2.

[0009] Optionally, the material distribution cover plate device is a metal flat plate structure with a plurality of cylindrical piston type sealing components on the lower surface, the aggregate sampling device comprises a plurality of sampling cups and a surplus material cup, the plurality of cylindrical piston type sealing components correspond to the plurality of sampling cups and the surplus material cup in a top-to-bottom manner, and the plurality of sampling cups and the surplus material cup are opened or closed to collect the to-be-sampled spherical particles by rising or lowering the material distribution cover plate device.

[0010] Optionally, the aggregate sampling device further comprises G aggregate grooves, wherein,

[0011] Each aggregate groove is a funnel structure and is arranged below the material distribution cover plate device, the outlet end of each of the G aggregate grooves corresponds to one of the G sampling cups, and the outlet end of each of the (N-G) aggregate grooves corresponds to the surplus material cup, which is used to collect the divided spherical particles in the material distribution disc, wherein G is a positive integer less than or equal to N, and N is a positive integer greater than or equal to 2.

[0012] Optionally, the aggregate sampling device further comprises a material cup fixing device, which is arranged on both sides of each sampling cup and both sides of the surplus material cup, and is used to fix each sampling cup and the surplus material cup.

[0013] Optionally, the volume of each sampling cup is less than or equal to the volume of the surplus material cup.

[0014] Optionally, further comprising: a control mechanism, respectively with the feeding mechanism, the distributing mechanism and the sampling mechanism, for adjusting the vibration frequency of the feeding mechanism and the rotation rate of the distributing mechanism, and controlling the distributing cover plate device to lift.

[0015] The spherical particle sampling device provided by the utility model effectively solves the problems that the existing equipment cannot meet the requirements of rapid sampling of large-flux spherical particles, and has the advantages of accurate control, stable automatic continuous operation, high reliability, no particle accumulation and the like.

[0016] Some of the additional aspects and advantages of the utility model will be given in the following description, some will become apparent from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0018] Figure 1 FIG. 1 is a structural schematic diagram of a spherical particle sampling device according to the utility model;

[0019] Figure 2 FIG. 2 is a schematic diagram of a sampling cup and a surplus cup of the spherical particle sampling device according to the utility model;

[0020] Figure 3 FIG. 3 is a process flow diagram of the spherical particle sampling device according to the utility model;

[0021] Figure 4 FIG. 4 is a structural schematic diagram of a rotating disc according to the utility model;

[0022] Figure 5 FIG. 5 is a schematic diagram of a distributing disc according to the utility model;

[0023] Figure 6 FIG. 6 is a schematic diagram of a material collecting tank according to the utility model.

[0024] Explanation of reference signs:

[0025] 100 - spherical particle sampling device, 1 - particle feeding device, 2 - hopper, 3 - feeding mechanism, 4 - distributing mechanism, 41 - rotating disc, 411 - inclined hollow material tank, 42 - distributing disc, 421 - partition plate, 5 - sampling mechanism, 51 - distributing cover plate device, 52 - material collecting and sampling device, 521 - sampling cup, 522 - surplus cup, 523 - material collecting tank, 524 - material cup fixing device, and 6 - control mechanism. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0027] The spherical particle sampling device, method, equipment and medium of the embodiments of the present application are described below with reference to the drawings.

[0028] Figure 1 The structure diagram of the spherical particle sampling device provided by the embodiments of the present application.

[0029] As Figure 1 shown, the spherical particle sampling device 100 comprises a particle feeding device 1, a hopper 2, a feeding mechanism 3, a distributing mechanism 4 and a sampling mechanism 5.

[0030] The particle feeding device 1 is used to transport the spherical particles to be sampled. The hopper 2 is connected with the particle feeding device 1 and is used to store the spherical particles to be sampled. The feeding mechanism 3 is in communication with the hopper 2 and is used to change the feeding speed of the hopper 2 by adjusting the vibration frequency. The distributing mechanism 4 is connected with the feeding mechanism 3 and is used to uniformly divide and move the spherical particles to be sampled. The sampling mechanism 5 comprises a distributing cover plate device 51 and a material collecting and sampling device 52. The distributing cover plate device 51 is connected with the distributing mechanism 4, and the distributing cover plate device 51 is connected with the material collecting and sampling device 52, so as to make the material collecting and sampling device 52 collect the uniformly divided spherical particles to be sampled by rising or lowering the distributing cover plate device 51.

[0031] In some embodiments, the particle feeding device 1 quantitatively and timely transports the spherical particles to be sampled to the hopper by vacuum, pneumatic or the like.

[0032] In some embodiments, a 0-20L volume hopper 2 is selected to store about 0-5kg of the spherical particles to be sampled.

[0033] In some embodiments, the feeding mechanism 3 is located at the outlet end of the hopper 2, and the feeding speed of the hopper 2 is changed by adjusting the vibration frequency, so as to uniformly and continuously provide the spherical particles to be sampled to the distributing mechanism 4.

[0034] Specifically, the feeding mechanism 3 comprises a feeding groove and a vibration device. The feeding groove can be wedge-shaped, one end of the wedge-shaped feeding groove is connected with the hopper 2, and the other end is connected with the distributing mechanism, so as to convey the spherical particles to be sampled in the hopper 2 to the distributing mechanism 4. The vibration device is arranged at the bottom of the feeding groove, and the feeding speed of the hopper 2 is changed by adjusting the vibration frequency of the vibration device.

[0035] In some embodiments, as Figure 4 and 5As shown, the material distribution mechanism 4 comprises a motor, a rotating bearing, a rotating disc 41 and a material distribution disc 42. The rotating speed of the rotating disc 41 is adjusted by the motor to match the vibration frequency of the vibration device in the feeding mechanism 3, so as to control the feeding and conveying speed and drive the rotating disc 41 to rotate by 12-360°, so as to control the feeding and conveying speed, and then realize the movement and uniform distribution of the to-be-sampled spherical particles.

[0036] In some embodiments, as shown in Figure 2 The material distribution cover plate device 51 is a metal flat plate structure with a plurality of cylindrical piston sealing assemblies on the lower surface. The material sampling device 52 comprises a plurality of sampling cups 521 and a surplus material cup 522. The plurality of cylindrical piston sealing assemblies correspond to the plurality of sampling cups 521 and the surplus material cup 522 in a one-to-one manner. According to the sampling frequency, the material distribution cover plate device is raised or lowered to open or close the cup openings of the plurality of sampling cups 521 and the surplus material cup 522 to collect the to-be-sampled spherical particles, so as to realize online extraction of a certain proportion (or a certain mass) of representative particle samples, and the sampling proportion or quantity is adjustable and controllable.

[0037] Further, as shown in Figure 1 and 5 The material sampling device 52 further comprises G material collecting tanks 523 and a material cup fixing device 524. Each material collecting tank 523 is a funnel-shaped structure and is arranged below the material distribution cover plate device 51. The outlet ends of the G material collecting tanks 523 correspond to the G sampling cups 521 in a one-to-one manner, and the outlet ends of the (N-G) material collecting tanks 523 correspond to the surplus material cup 522, so as to collect the uniformly distributed spherical particles in the material distribution disc 42 and transmit the collected spherical particles to the sampling cups 521 and the surplus material cup 522. The material cup fixing device 524 is arranged on both sides of each sampling cup 521 and on both sides of the surplus material cup 522 to fix each sampling cup 521 and the surplus material cup 522. G is a positive integer less than or equal to N, and N is a positive integer greater than or equal to 2.

[0038] If there are N randomly sampled samples (1≤N≤60), each with a mass of about 10-2000g, are collected in N sample cups 521 (1≤N≤60), respectively, the remaining sample to be sampled is collected in the remaining cup 522. It should be noted that the volume of the sample cup is less than or equal to the volume of the remaining cup, and the minimum distance between the sample cup and the remaining cup is greater than or equal to 20mm, which can be manually or by a mechanical hand.

[0039] In some embodiments, a control mechanism 6 is further included, which can be composed of a computer, a PLC, a circuit breaker, an intermediate relay, a control circuit, etc., and is respectively connected with the feeding mechanism, the distributing mechanism and the sampling mechanism, for process control between systems, to start and stop and run the motor and the vibrator, adjust the motor speed and the vibrator frequency, and set a manual / automatic switch to realize full-automatic operation or manual single-step control operation of the system. That is, to adjust the vibration frequency and the rotation rate of the distributing mechanism, and control the lifting of the distributing cover plate device.

[0040] As shown in Figure 3 The working process of the spherical particle sampling device according to the embodiments of the present application is as follows:

[0041] The initialization process is as follows: check the lifting of the distributing cover plate device, the distributing mechanism and the power output; debug the motor and the rotating disc in the manual mode to ensure the correct running direction; place empty containers on the container placing position; set the process parameters: motor speed and vibrator frequency.

[0042] The sampling process is as follows: the particle feeding device continuously feeds a certain amount of particles into the sampling device hopper; place multiple sample cups and one remaining cup into the device, fix the multiple empty containers by using the cup fixing device, and cover the cover plate; press the start button, the device runs, the hopper pours the sampling sample, the motor drives the rotating disc to rotate, the feeding mechanism vibrates to feed; after observing that there is no particle in the hopper, the feeding mechanism and the distributing disc, press the stop button to stop the device; take out the multiple sample cups, and respectively detect a certain weight of sample in each sample cup, the remaining sample is put into the remaining cup, and the remaining cup is returned to the warehouse; the particle sampling is completed, and the total power supply of the device is turned off.

[0043] The spherical particle sampling device according to the embodiments of the present application effectively solves the problem that the existing device cannot meet the rapid sampling of large-flux spherical particles, and has the advantages of accurate control, stable automatic continuous operation, high reliability, no particle accumulation, etc.

[0044] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or N embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without mutual contradiction.

[0045] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, for example, two, three, etc., unless otherwise specifically limited.

Claims

1. A device for sampling spheroidal particles, characterized in that, The application relates to a granular sampling device. The granular sampling device comprises a granular feeding device for conveying the granular particles to be sampled; a hopper connected with the granular feeding device for storing the granular particles to be sampled; a feeding mechanism in communication with the hopper for changing the feeding speed of the hopper by adjusting the vibration frequency; a distributing mechanism connected with the feeding mechanism for uniformly distributing and moving the granular particles to be sampled; and a sampling mechanism comprising a distributing cover plate device and a collecting sampling device, wherein the distributing cover plate device is connected with the distributing mechanism, and the distributing cover plate device is connected with the collecting sampling device for collecting the uniformly distributed granular particles to be sampled by lifting or lowering the distributing cover plate device. The feeding mechanism comprises a feeding groove and a vibration device, wherein the feeding groove is used for conveying the granular particles to be sampled in the hopper to the distributing mechanism; and the vibration device is arranged at the bottom of the feeding groove and used for changing the feeding speed of the hopper by adjusting the vibration frequency. The distributing mechanism comprises a motor, a rotating bearing, a rotating disc and a distributing disc, wherein the motor is used for adjusting the rotating speed of the rotating disc to match the vibration frequency of the feeding mechanism, and driving the rotating disc to rotate so as to control the feeding and conveying speed; the bearing center of the rotating bearing is hollow, the upper half of the bearing center is connected with the feeding mechanism, and the lower part of the bearing center is connected with the rotating disc, so as to convey the granular particles to be sampled to the rotating disc; the rotating disc is a cavity structure, the lower end of the feeding port of the rotating disc is an inclined hollow hopper, and the hopper outlet end of the rotating disc is aligned with the distributing disc, so as to convey the granular particles to be sampled to the distributing disc; and the distributing disc is used for uniformly distributing and moving the granular particles to be sampled. The distributing disc divides the granular particles to be sampled into N equal areas, each equal area is provided with a partition plate, so as to uniformly distribute the granular particles to be sampled and make the amount of the granular particles to be sampled in each equal area be the same, wherein N is a positive integer greater than or equal to 2. The distributing cover plate device is a metal flat plate structure provided with a plurality of cylindrical piston type sealing components on the lower surface, the collecting sampling device comprises a plurality of sampling cups and a surplus cup, the plurality of cylindrical piston type sealing components correspond to the plurality of sampling cups and the surplus cup in a one-to-one manner, and the plurality of sampling cups and the surplus cup are opened or closed to collect the granular particles to be sampled by lifting or lowering the distributing cover plate device.

2. The spherical particle sampling device of claim 1, wherein, The collecting sampling device further comprises G collecting hoppers, wherein each collecting hopper is a funnel structure and is arranged below the distributing cover plate device, the outlet ends of the G collecting hoppers correspond to the G sampling cups in a one-to-one manner, and the outlet ends of (N-G) collecting hoppers correspond to one surplus cup, so as to collect the uniformly distributed granular particles in the distributing disc, wherein G is a positive integer less than or equal to N, and N is a positive integer greater than or equal to 2. The collecting sampling device further comprises ​ 3. The spherical particle sampling device of claim 1, wherein, ​ ​ ​ ​ ​ 4. The spherical particle sampling device of claim 3, wherein, ​ 5. The spherical particle sampling device of claim 1, wherein, ​ 6. The spherical particle sampling device of claim 5, wherein, ​ ​ 7. The spherical particle sampling device of claim 6, wherein, ​ A material cup fixing device is arranged on both sides of each sampling cup and both sides of the surplus material cup for fixing each sampling cup and the surplus material cup.

8. The spherical particle sampling device of claim 5, wherein, The volume of each sampling cup is less than or equal to the volume of the surplus material cup.

9. The spherical particle sampling device of claim 1, wherein, Further comprising: A control mechanism is respectively arranged with the feeding mechanism, the material distributing mechanism and the sampling mechanism for adjusting the vibration frequency of the feeding mechanism and the rotation rate of the material distributing mechanism, and controlling the lifting of the material distributing cover plate device.

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