High-temperature gas-cooled reactor absorber ball storage tank

Abstract

The present invention provides a storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor. The storage sphere tank for absorber spheres of the high-temperature gas-cooled reactor includes: a tank body, the tank body includes a cavity, the cavity includes a charging area, the charging area includes a preset liquid level detection area and a main charging area that are communicated with each other, the maximum cross-sectional area of the preset liquid level detection area is smaller than the maximum cross-sectional area of the main charging area, and at least one preset liquid level is provided in the preset liquid level detection area; a gas-solid flow inlet, the gas-solid flow inlet is communicated with the charging area; a gas flow outlet, the gas flow outlet is communicated with the cavity; and a ball dropping port, the ball dropping port is located at the lower part of the charging area. The storage sphere tank for absorber spheres of the high-temperature gas-cooled reactor of the present invention has high sensitivity in measuring the preset liquid level, can improve the measurement accuracy of the loading amount of absorber spheres in the storage sphere tank, and thus improve the measurement accuracy of the liquid level height of the ball dropping hole passage of the absorber spheres.

Description

Technical Field

[0001] The present invention relates to the technical field of reactor engineering and safety, and particularly relates to a storage sphere tank for absorbing spheres in a high-temperature gas-cooled reactor. Background Art

[0002] The high-temperature gas-cooled reactor is provided with two sets of independent shutdown systems, namely a control rod system and an absorbing sphere system. The absorbing sphere system has the functions of assisting in shutdown by dropping spheres and pneumatically conveying the spheres back for standby. Among them, the absorbing spheres are spherical particles containing neutron-absorbing materials (such as boron carbide), and their diameters are in the millimeter range, such as 5 - 10 mm.

[0003] The absorbing spheres are stored in a storage sphere tank, and the storage sphere tank is located above the reactor core. When the reactor is operating normally, the ball-dropping port at the bottom of the storage sphere tank is shielded, and the absorbing spheres are stored in the storage sphere tank. When it is necessary to drop the spheres to shut down the reactor, the absorbing spheres fall into the ball-dropping hole channel of the side reflector of the core through the ball-dropping port at the bottom of the storage sphere tank to absorb neutrons to achieve shutdown. Before the reactor starts, the absorbing spheres in the hole channel are pneumatically conveyed back to the storage sphere tank above the core for standby. In order to judge whether the dropping and returning of the absorbing spheres are completed normally and the position of the absorbing spheres in the ball-dropping hole channel, it is necessary to set a material level monitoring point in the storage sphere tank to monitor the material level of the absorbing spheres in the storage sphere tank, so as to obtain the material level in the ball-dropping hole channel of the absorbing spheres through the material level of the absorbing spheres in the storage sphere tank. It should be noted that the ball-dropping hole channel of the absorbing spheres includes three sections: the upper section, the core active section, and the lower section, where the core active section corresponds to the core active area of the reactor.

[0004] In the prior art, the storage sphere tank monitors whether the absorbing spheres in the storage sphere tank have completed dropping by setting a low material level point at the bottom of the loading area; and monitors whether the absorbing spheres pneumatically conveyed back to the storage sphere tank through the pipeline have completed returning by setting a high material level point at the upper part of the loading area. Since the cross-sectional area of the main section of the loading area of the storage sphere tank is relatively large, the sensitivity of the preset material level trigger is low, resulting in low measurement accuracy of the loading amount of the absorbing spheres in the storage sphere tank, and thus low measurement accuracy of the material level height in the ball-dropping hole channel of the absorbing spheres.

[0005] In addition, the cross-sectional area of the ball-dropping hole channel of the absorbing spheres is much smaller than the cross-sectional area of the cylindrical section where the high material level point is located in the related art. Therefore, the change in the material level height of the ball-dropping hole channel of the absorbing spheres corresponds to a lower sensitivity of the height change of the cylindrical section where the high material level point is located; and, affected by the complexity of gas-solid flow in the related art, the upper surface formed by the accumulation of the absorbing spheres pneumatically conveyed back to the storage sphere tank is not regular enough. If the high material level measurement point is set too high, it may not be triggered all the time after the spheres are returned. If the high material level measurement point is set too low, it may be triggered too early, resulting in low measurement accuracy of the loading amount of the absorbing spheres in the storage sphere tank. Therefore, in the related art, there is also a problem that it is difficult to determine the appropriate position of the high material level point. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems in the related art to a certain extent.

[0007] In the related art, in the technical solution of the absorption ball storage tank, there is a problem of low measurement accuracy of the loading amount of the absorption balls in the storage tank, which results in low measurement accuracy of the material level height of the absorption ball dropping hole channel in the related art.

[0008] For this reason, an embodiment of the present invention provides a storage tank for absorption balls of a high-temperature gas-cooled reactor. The sensitivity of the preset material level measurement of this storage tank for absorption balls of a high-temperature gas-cooled reactor is high, which can improve the measurement accuracy of the loading amount of the absorption balls in the storage tank, and thus improve the measurement accuracy of the material level height of the absorption ball dropping hole channel.

[0009] An embodiment of the present invention provides a method for measuring the material level of the absorption ball dropping hole channel. This method for measuring the material level of the absorption ball dropping hole channel has the advantage of high measurement accuracy.

[0010] The storage tank for absorption balls of a high-temperature gas-cooled reactor according to an embodiment of the present invention includes: a tank body, the tank body includes a cavity, the cavity includes a loading area, the loading area includes a preset material level detection area and a main loading area that communicate with each other, the maximum cross-sectional area of the preset material level detection area is smaller than the maximum cross-sectional area of the main loading area, and at least one preset material level is provided in the preset material level detection area; a gas-solid flow inlet that communicates with the loading area; a gas flow outlet that communicates with the cavity; and a ball dropping port located at the lower part of the loading area.

[0011] In some embodiments, the loading area further includes a material guiding area that communicates the main loading area with the ball dropping port, and the cross-sectional area of at least part of the material guiding area gradually decreases from top to bottom.

[0012] In some embodiments, it further includes a screening and blocking member provided between the gas-solid flow inlet and the gas flow outlet.

[0013] In some embodiments, at least part of the tank body forms the loading area.

[0014] In some embodiments, the tank body further includes internal components, and at least part of the loading area is formed by the internal components.

[0015] In some embodiments, there is one preset material level detection area and one main loading area. The preset material level detection area is located above the main loading area, and the gas-solid flow inlet communicates with the preset material level detection area.

[0016] In some embodiments, there are multiple preset material level detection areas and multiple main loading areas. The loading area includes multiple storage units. One preset material level detection area and one main loading area form one storage unit. The main loading area of one of two adjacent storage units communicates with the preset material level detection area of the other. The gas-solid flow inlet communicates with one of the multiple preset material level detection areas.

[0017] In some embodiments, at least one of the outer peripheral contours of the cross-section of the preset material level detection area and the outer peripheral contour of the cross-section of the main loading area is circular.

[0018] The method for measuring the material level of the absorption balls in the ball dropping hole of the present invention embodiment includes the high-temperature gas-cooled reactor absorption ball storage tank according to any one of the above. The measurement method includes the following steps:

[0019] Correspond the material level height of the absorption balls in the storage tank with the material level height of the absorption balls in the ball dropping hole;

[0020] Measure the material level height of the absorption balls in the storage tank;

[0021] Obtain the material level height of the absorption balls in the ball dropping hole according to the material level height of the absorption balls in the storage tank.

[0022] In some embodiments, measuring the material level height of the absorption balls in the storage tank includes: detecting that the material level height of the absorption balls in the storage tank reaches the preset material level. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of Embodiment 1 of the high-temperature gas-cooled reactor absorption ball storage tank of the present invention embodiment.

[0024] Figure 2 It is a schematic diagram of Embodiment 2 of the high-temperature gas-cooled reactor absorption ball storage tank of the present invention embodiment.

[0025] Figure 3 It is a schematic diagram of Embodiment 3 of the high-temperature gas-cooled reactor absorption ball storage tank of the present invention embodiment.

[0026] Reference Signs:

[0027] Tank body 1; Cavity 11; Loading area 111; Preset material level detection area 1111; Main loading area 1112; Material guiding area 1113; Connection section 1114;

[0028] Preset material level 2;

[0029] Gas-solid flow inlet 30; Gas flow outlet 31;

[0030] Ball dropping port 4;

[0031] Sieving and blocking member 5;

[0032] Drive rod 6;

[0033] First storage unit 71; Second storage unit 72; Third storage unit 73. Specific embodiments

[0034] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] The high-temperature gas-cooled reactor absorber ball storage tank according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0036] Embodiment 1: As Figure 1 shown, the high-temperature gas-cooled reactor absorber ball storage tank includes: a tank body 1, a gas-solid flow inlet 30, a gas flow outlet 31, and a ball dropping port 4.

[0037] The tank body 1 includes a cavity 11. The cavity 11 includes a loading area 111. The loading area 111 includes a preset material level detection area 1111 and a main loading area 1112 that communicate with each other. The preset material level detection area 1111 is located above the main loading area 1112. The maximum cross-sectional area of the preset material level detection area 1111 is smaller than the maximum cross-sectional area of the main loading area 1112. At least one preset material level 2 is provided in the preset material level detection area 1111. The gas-solid flow inlet 30 communicates with the loading area 111. The gas flow outlet 31 communicates with the cavity 11. The ball dropping port 4 is located at the lower part of the loading area 111.

[0038] As Figure 1 shown, the absorber balls accumulate at the place where the cross-section of the storage tank is larger, and the height change of the accumulated absorber balls is smaller. While the same number of absorber balls accumulate at the place where the cross-section of the storage tank is smaller, the height change of the accumulated absorber balls is larger. Therefore, the cross-sectional area of the preset material level detection area 1111 is smaller than the cross-sectional area of the main loading area 1112, which is beneficial to detecting the height change of the accumulated absorber balls in the preset material level detection area 1111. That is to say, the detection accuracy of setting the preset material level 2 in the preset material level detection area 1111 is higher than that of setting the preset material level 2 in the main loading area 1112.

[0039] It can be understood that the cross-sectional areas of the main loading area 1112 and the preset material level detection area 1111 can be designed according to the actual working conditions. Preferably, the ratio of the cross-sectional area of the main loading area 1112 to the cross-sectional area of the preset material level detection area 1111 is greater than or equal to 2, which is beneficial to detecting the height change of the accumulated absorber balls in the preset material level detection area 1111, so as to improve the sensitivity of the measurement of the preset material level 2, and further improve the measurement accuracy of the absorber ball loading amount in the storage tank.

[0040] The gas-solid flow inlet 30 may be provided at the lower or middle part of the charging area 111. Preferably, the gas-solid flow inlet 30 is provided at the upper part of the charging area 111. The absorption balls can enter the charging area 111 through the gas-solid flow inlet 30 by pipeline pneumatic conveying and accumulate starting from the bottom of the charging area 111.

[0041] The gas flow outlet 31 communicates with the cavity 11, enabling the gas in the tank body 1 to be discharged to the outside through the gas flow outlet 31. Preferably, the gas flow outlet 31 is provided above the gas-solid flow inlet 30.

[0042] The ball dropping port 4 is provided at the bottom of the charging area 111 and communicates with the lower part of the charging area 111. The ball dropping port 4 is used to allow the absorption balls to enter the absorption ball dropping channel through the ball dropping port 4 when ball dropping for reactor shutdown is required, and absorb neutrons to achieve reactor shutdown.

[0043] It should be noted that the opening and closing of the ball dropping port 4 are controlled by a control member. When ball dropping for reactor shutdown is required, the control member controls the ball dropping port 4 to open, allowing the absorption balls to fall into the absorption ball dropping channel through the ball dropping port 4 and absorb neutrons to achieve reactor shutdown. When the reactor is operating normally, the control member controls the ball dropping port 4 to close, and the absorption balls are placed in the ball storage tank.

[0044] As Figure 1 shown, in this embodiment, the control member is a transmission rod 6. The upper end of the transmission rod 6 is connected to the output component of the driving device, and the lower end of the transmission rod 6 extends into the ball dropping port 4. That is to say, when the driving device is started, the driving device controls the output component to drive the transmission rod 6 to lift to close or open the ball dropping port 4.

[0045] In other words, the lower end of the transmission rod 6 can be fitted in the ball dropping port 4 so that the output component of the driving device drives the transmission rod 6 to move upward, thereby opening the ball dropping port 4 to allow the absorption balls to fall into the absorption ball dropping channel through the ball dropping port 4. The transmission rod 6 can also be integrally provided with a combined level gauge probe with charging and level measurement functions.

[0046] It can be understood that the driving device can be a motor, a hydraulic cylinder, a pneumatic cylinder, an electromagnetic driving member, etc., and the driving device can be installed at a suitable position according to the actual operating conditions.

[0047] It can be understood that other forms can also be used to cooperate with the ball dropping port 4 to control the opening and closing of the ball dropping port 4. For example, an electric ball valve, an electromagnetic valve, etc. can be provided at the ball dropping port 4.

[0048] In this embodiment, the charging area 111 further includes a material guiding area 1113. The material guiding area 1113 communicates with the main charging area 1112 and the ball dropping port 4. At least part of the cross-sectional area of the material guiding area 1113 becomes smaller from top to bottom, facilitating the outflow of the absorption balls through the ball dropping port 4.

[0049] It is understandable that, for the convenience of construction, the half vertex angle of the material guiding area 1113 can be 30 degrees, 45 degrees or 60 degrees.

[0050] The absorption ball storage tank of the high-temperature gas-cooled reactor according to the embodiment of the present invention further includes a sieve baffle 5, and the sieve baffle 5 is arranged between the gas-solid flow inlet 30 and the gas flow outlet 31. The sieve baffle 5 allows the gas flow to pass through and does not allow the absorption balls in the storage tank to pass through. Therefore, the sieve baffle 5 can effectively prevent the absorption balls from moving out of the storage tank through the gas flow outlet 31 following the gas flow in the storage tank.

[0051] As Figure 1 shown, the charging area 111 is directly formed by the tank body 1, or the charging area 111 can also be formed by at least part of the tank body 1, or the tank body 1 further includes internal components, and at least part of the charging area 111 is formed by the internal components.

[0052] It is understandable that the charging area 111 is directly formed by the tank body 1, that is, the cavity 11 forms the charging area 111; or, part of the cavity 11 forms the charging area 111; or, the internal components are placed in the cavity 11, and a sandwich cavity is formed between the outer wall surface of the internal components and the inner peripheral surface of the tank body 1. The sandwich cavity is communicated with the cavity 11, and the gas flow outlet 31 is communicated with the sandwich cavity so as to discharge the gas in the charging area 111 to the outside of the tank body 1.

[0053] That is to say, the gas flow outlet 31 penetrates through the side wall of the tank body 1 and is communicated with the cavity 11, so that the gas in the tank body 1 can be discharged to the outside of the tank through the gas flow outlet 31.

[0054] In this embodiment, there is one preset material level detection area 1111 and one main charging area 1112. The preset material level detection area 1111 is located above the main charging area 1112, and the gas-solid flow inlet 30 is communicated with the preset material level detection area 1111. As Figure 1 shown, the gas flow outlet 31 is located above the gas-solid flow inlet 30.

[0055] Specifically, as Figure 1 shown, the preset material level detection area 1111 is provided with three preset material levels 2, which are respectively a preset material level 2a, a preset material level 2b and a preset material level 2c. Among them, the preset material level 2a is located below the preset material level 2b, and the preset material level 2c is located above the preset material level 2b and below the gas-solid flow inlet 30.

[0056] In this embodiment, during the ball return process, the absorption balls in the absorption ball dropping hole are pneumatically transported back to the storage tank above the reactor core through the gas-solid mixing device and the conveying pipeline for standby. The absorption balls enter the storage tank from the gas-solid flow inlet 30 and start to accumulate from the material guiding area 1113. As Figure 1As shown, the acute angle B formed by the conical surface of the connecting section 1114 and the horizontal plane is 45 degrees, and the angle of repose A of the absorption balls stacked in the storage tank is about 23 degrees. Since angle B is greater than angle A, as the material surface of the absorption balls rises in the loading area 111, the material guiding area 1113, the main loading area 1112, and the connecting section 1114 can be filled with absorption balls. The total volume of the material guiding area 1113, the main loading area 1112, and the connecting section 1114 is easy to determine, and thus the loading volume of the absorption balls represented by the total volume of the material guiding area 1113, the main loading area 1112, and the connecting section 1114 is also convenient to determine. Denote the loading volume of the absorption balls stacked in the material guiding area 1113, the main loading area 1112, and the connecting section 1114 as V 1 .

[0057] Denote the loading quantity of the absorption balls between the upper end of the connecting section 1114 and the preset material level 2a as V 2a . On the one hand, V 2a itself is small, and on the other hand, the cross-sectional area of the preset material level detection area 1111 is small, and the influence of the angle of repose A is small. Therefore, the measurement accuracy of the loading quantity of the absorption balls corresponding to the preset material level 2a is improved. Similarly, the measurement accuracy of the loading quantity of the absorption balls corresponding to the preset material level 2b and the preset material level 2c is improved.

[0058] It can be understood that the setting positions of the preset material level 2a, the preset material level 2b, and the preset material level 2c can be set according to actual needs. For example, if the distances between the preset material level 2a, the preset material level 2b, and the preset material level 2c are set to be large, then the preset material level 2a, the preset material level 2b, and the preset material level 2c can respectively detect the loading quantity of the absorption balls at the corresponding heights of the preset material level detection area 1111.

[0059] Or, if the distances between the preset material level 2a, the preset material level 2b, and the preset material level 2c are set to be small, the preset material level 2a, the preset material level 2b, and the preset material level 2c can detect the same height range of the preset material level detection area 1111. That is to say, when the absorption balls in the preset material level detection area 1111 reach the preset material level 2, one or more of the preset material level 2a, the preset material level 2b, and the preset material level 2c are detected, that is, the preset material level 2a, the preset material level 2b, and the preset material level 2c are redundant with each other, thereby improving the reliability of the measurement of the preset material level 2 and reducing the maintenance and replacement frequency of the preset material level 2.

[0060] It should be noted that the measurement method of the preset material level 2 can adopt a contact measurement method or a non-contact measurement method. For example: the measurement method of the preset material level 2 can adopt a resistance type level gauge, a capacitance type level gauge, an inductance type level gauge and other level gauges.

[0061] It can be understood that a material level monitoring point can also be set above and adjacent to the ball dropping port 4 to detect whether there are still absorption balls in the ball storage tank.

[0062] When the ball storage tank is applied to the measurement of the material level height of the absorption balls in the ball dropping channel, the bottom of the ball dropping channel is connected to the gas-solid flow inlet 30 through a pipeline, so that the absorption balls flow out of the ball dropping channel and then enter the ball storage tank through the gas-solid flow inlet 30 for temporary storage for subsequent recycling. There is a preset corresponding relationship in design between the loading amount of the absorption balls accumulated in the ball storage tank corresponding to the preset material level 2 set on the preset material level detection area 1111 and the material level height of the absorption balls in the ball dropping channel. The measurement accuracy of the loading amount of the absorption balls in the ball storage tank is improved, and the measurement accuracy of the material level height of the absorption balls in the ball dropping channel is also improved.

[0063] It can be understood that the design dimensions of each part of the loading area 111 are known quantities, and the cross-sectional area of the absorption ball dropping channel is also a known quantity. The volume of the absorption balls accumulated in the loading area 111 is equal to the volume of the absorption balls passing through the ball dropping channel. Therefore, a material level monitoring point can be set in the ball storage tank to monitor the material level of the absorption balls in the ball storage tank, so as to obtain the material level in the absorption ball dropping channel through the material level of the absorption balls in the ball storage tank. In addition, due to the high temperature, radioactivity and inconvenience of replacement of the reactor, it is difficult to directly measure the material level in the absorption ball dropping channel, but the material level is obtained by an inverse deduction method.

[0064] In this embodiment, the preset material level 2 corresponds to the material level height of the absorption balls in the absorption ball dropping channel. By measuring the preset material level 2 of the absorption balls in the ball storage tank, the height corresponding to the material level of the absorption balls in the absorption ball dropping channel is obtained. The preset material level 2a set on the preset material level detection area 1111 corresponds to the height at the bottom of the core active section, denoted as h a ; Set the preset material level 2b corresponding to h according to actual needs a a certain height downward, denoted as h b ; Similarly, set the preset material level 2c corresponding to h according to actual needs b a certain height downward, denoted as h c . By whether the preset material levels 2a, 2b, and 2c are triggered, it can be further judged whether the material level height of the absorption balls in the absorption ball dropping channel is above or below the corresponding h a 、h b 、h c 、Specifically, the absorption balls enter the ball storage tank through the gas-solid flow inlet 30 and start to accumulate from the material guiding area 1113. Before the preset material level 2a is triggered, the material level height of the absorption balls in the absorption ball dropping channel is above h a ; When the preset material level 2a is triggered, it indicates that the material level of the absorption balls in the absorption ball dropping channel reaches h a; After the preset material level 2a is triggered and before the preset material level 2b is triggered, the material level of the absorber balls in the absorber ball dropping channel is at h a and h b Between; When the preset material level 2b is triggered, it indicates that the material level of the absorber balls in the absorber ball dropping channel reaches h b ; After the preset material level 2b is triggered and before the preset material level 2c is triggered, the material level of the absorber balls in the absorber ball dropping channel is at h b and h c Between; When the preset material level 2c is triggered, it indicates that the material level of the absorber balls in the absorber ball dropping channel reaches h c .

[0065] It can be understood that the triggering of any one of the preset material level 2a, the preset material level 2b, and the preset material level 2c can indicate that the material level of the absorber balls in the absorber ball dropping channel is below the core active zone. If the preset material level 2a fails, the triggering of the preset material level 2b can also indicate that the material level height of the absorber ball dropping channel is below the core active zone; if both the preset material level 2a and the preset material level 2b fail, the triggering of the preset material level 2c can also indicate that the material level height of the absorber ball dropping channel is below the core active zone. That is to say, the settings of the preset material level 2a, the preset material level 2b, and the preset material level 2c here have signal redundancy for judging that the material level height of the absorber ball dropping channel is below the core active zone.

[0066] It can be understood that the height difference between h a and h b can be predicted by calculating the loading amount of the absorber balls between the preset material level 2a and the preset material level 2b; similarly, the height difference between h a and h c can be predicted by calculating the loading amount of the absorber balls between the preset material level 2a and the preset material level 2c; the height difference between h b and h c can be predicted by calculating the loading amount of the absorber balls between the preset material level 2b and the preset material level 2c.

[0067] The settings of the preset material level 2a, the preset material level 2b, and the preset material level 2c can not only ensure that the material level height of the absorber ball dropping channel is below the core active zone, but also judge the distance range between the material level of the absorber ball dropping channel and the core active zone. Given the height of the absorber ball dropping channel below the core active zone, the height range of the remaining absorber balls in the absorber ball dropping channel below the core active zone can be obtained through the distance range between the material level of the absorber ball dropping channel and the core active zone.

[0068] In this embodiment, the outer peripheral contour of the cross-section of the preset material level detection area 1111 and at least one of the outer peripheral contours of the cross-sections of the main loading area 1112 are circular.

[0069] Optionally, the outer peripheral contour of the cross-section of the preset material level detection area 1111 is circular or the outer peripheral contour of the cross-section of the main loading area 1112 is circular.

[0070] Preferably, the outer peripheral contours of the cross-sections of both the preset material level detection area 1111 and the main loading area 1112 are circular, which is convenient for calculating the volume of the storage sphere tank and detecting the height of the absorption spheres through the preset material level 2, and further convenient for calculating the loading amount of the absorption spheres in the storage sphere tank.

[0071] It should be noted that, for the convenience of setting the preset material level 2 in the preset material level detection area 1111, the height of the preset material level detection area 1111 is greater than 50 mm. It can be understood that in practical applications, those skilled in the art can set the height of the preset material level detection area 1111 according to actual needs.

[0072] As Figure 1 shown, in this embodiment, the loading area 111 further includes a connecting section 1114. The connecting section 1114 connects the preset material level detection area 1111 and the main loading area 1112. The inner wall contour of the connecting section 1114 is conical, that is, the cross-sectional area of the connecting section 1114 gradually increases from top to bottom.

[0073] Optionally, the angle formed by the conical surface of the connecting section 1114 and the horizontal plane is greater than 20 degrees.

[0074] Preferably, the half vertex angle of the connecting section 1114 is 30 degrees, 45 degrees or 60 degrees, which is convenient for construction.

[0075] Embodiment 2:

[0076] The difference between Embodiment 2 and Embodiment 1 is that: as Figure 2 shown, in Embodiment 2, no connecting section 1114 is provided between the preset material level detection area 1111 and the main loading area 1112. That is, the upper end of the main loading area 1112 is connected to the lower end of the preset material level detection area 1111, and the top surface of the main loading area 1112 is a plane. When the absorption spheres are stacked in the main loading area 1112, due to the existence of the angle of repose, the absorption spheres are stacked in the main loading area 1112 and cannot fill the main loading area 1112 completely, forming a blank area at the top of the main loading area 1112 that cannot be filled by the absorption spheres. Therefore, when calculating the loading amount of the absorption spheres in the main loading area 1112, more consideration needs to be given to the influence of the angle of repose. Other technical features of Embodiment 2 are the same as those of Embodiment 1 and will not be elaborated here.

[0077] Embodiment 3:

[0078] In this embodiment, there are multiple preset material level detection areas 1111 and multiple main loading areas 1112. The loading area 111 includes multiple storage units. One preset material level detection area 1111 and one main loading area 1112 form one storage unit. The main loading area 1112 of one of two adjacent storage units is communicated with the preset material level detection area 1111 of the other. The gas-solid flow inlet 30 is communicated with one of the multiple preset material level detection areas 1111.

[0079] Specifically, as Figure 3 shown, there are three storage units, namely the first storage unit 71, the second storage unit 72, and the third storage unit 73. The first storage unit 71, the second storage unit 72, and the third storage unit 73 are communicated in sequence from top to bottom. That is, the air flow outlet 31 is located at the upper part of the first storage unit 71, the gas-solid flow inlet 30 is located between the air flow outlet 31 and the first storage unit 71. The preset material level detection area 1111 of the second storage unit 72 is communicated with the material guiding area 1113 of the first storage unit 71. The preset material level detection area 1111 of the third storage unit 73 is communicated with the material guiding area 1113 of the second storage unit 72. The material guiding area 1113 of the third storage unit 73 is communicated with the ball dropping port 4.

[0080] It can be understood that the difference between Embodiment 3 and Embodiment 2 is that, as Figure 3 shown, Embodiment 3 includes multiple storage units.

[0081] That is to say, since the absorption balls circulate intermittently in the ball storage tank and the ball dropping channel, that is, the total amount of absorption balls remains unchanged, the loading amount of absorption balls in the ball dropping channel can be deduced by the loading amount of absorption balls in the ball storage tank. Thus, by setting the preset material level 2 at each preset material level detection area 1111, the loading amount of absorption balls in the corresponding ball storage tank corresponding to the preset material level 2 can be detected, and then the loading amount of the corresponding absorption balls in the ball dropping channel can be obtained.

[0082] In addition, multiple preset material level detection areas 1111 are respectively arranged in different storage units. That is to say, multiple preset material level detection areas 1111 are used to detect the loading amount of the corresponding absorption balls in the ball storage tank. Further, the loading amount of absorption balls in the ball storage tank corresponding to each preset material level detection area 1111 reflects the material level of the absorption ball dropping channel.

[0083] In other words, multiple preset material level detection areas 1111 can detect the change of the loading amount of absorption balls in the ball storage tank, so as to detect the material levels at multiple positions in the absorption ball dropping channel. Therefore, the resolution of the material level height (i.e., the loading amount of absorption balls) of the absorption ball dropping channel is improved.

[0084] It should be noted that the amount of balls loaded in the ball-drop channel of the absorber balls can be divided into N equal parts, and correspondingly, the volumes of the multiple storage units can be divided into N equal parts. Then, the volume occupied by 1 / N of the amount of balls loaded in the ball-drop channel of the absorber balls is equal to 1 / N of the total volume of the multiple storage units. Preset material levels 2 are set at 1 / N, 2 / N, ……, (N - 1) / N of the total volume of the multiple storage units. When the preset material level 2 at 1 / N of the storage unit detects absorber balls, it means that the volume of the absorber balls in the storage tank is 1 / N of the total volume of the multiple storage units. That is to say, the total volume of the remaining absorber balls in the ball-drop channel of the absorber balls is (N - 1) / N of the total volume of the multiple storage units.

[0085] For example, there are three storage units. If the amount of balls loaded in the ball-drop channel of the absorber balls is divided into 3 equal parts, then preset material levels 2 are set at 1 / 3 and 2 / 3 of the total amount of absorber balls in the storage units. Then, when the preset material level 2 set in the lowermost storage unit detects absorber balls, it means that the absorber balls in the ball-drop channel of the absorber balls are 2 / 3 of the total amount of absorber balls.

[0086] Of course, those skilled in the art can set other numbers of storage units according to actual needs.

[0087] Other technical features of Embodiment 3 are the same as those of Embodiment 2 and will not be elaborated here.

[0088] Next, the method for measuring the material level of the ball-drop channel of the absorber balls in the embodiment of the present invention will be described.

[0089] The method for measuring the material level of the ball-drop channel of the absorber balls in the embodiment of the present invention includes a high-temperature gas-cooled reactor absorber ball storage tank according to any one of the above, and the measuring method includes the following steps:

[0090] Correspond the material level height of the absorber balls in the storage tank with the material level height of the absorber balls in the ball-drop channel;

[0091] Measure the material level height of the absorber balls in the storage tank;

[0092] Obtain the material level height of the absorber balls in the ball-drop channel according to the material level height of the absorber balls in the storage tank.

[0093] It should be noted that when the storage tank is applied to the measurement of the material level height of the absorber balls in the ball-drop channel, the bottom of the ball-drop channel is connected to the gas-solid flow inlet of the storage tank through a gas-solid mixing device and a conveying pipeline, so that the absorber balls flow out of the ball-drop channel and then enter the storage tank through the gas-solid flow inlet for storage and recycling. Therefore, through the material level height of the absorber balls in the storage tank, the material level height of the absorber balls in the ball-drop channel can be deduced, and thus the measurement of the material level of the ball-drop channel can be realized.

[0094] In some embodiments, measuring the level height of the absorption balls in the storage tank includes: detecting that the level height of the absorption balls in the storage tank reaches a preset level.

[0095] That is to say, the loading amount of the absorption balls in the storage tank can be measured through the preset level, so that the level of the absorption balls in the ball dropping channel can be obtained.

[0096] It can be understood that by improving the sensitivity of the preset level measurement of the storage tank, the measurement accuracy of the loading amount of the absorption balls in the storage tank can be improved, and thus the measurement accuracy of the level height of the absorption ball dropping channel can be improved.

[0097] Therefore, the method for measuring the level of the ball dropping channel in the embodiments of the present invention has the advantage of high measurement accuracy.

[0098] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0099] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0100] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0101] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0102] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0103] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor, characterized in that, it comprises: a tank body, the tank body includes a cavity, the cavity includes a loading area, the loading area includes a preset material level detection area and a main loading area that are interconnected, the maximum cross-sectional area of the preset material level detection area is smaller than the maximum cross-sectional area of the main loading area, and at least one preset material level is provided in the preset material level detection area; a gas-solid flow inlet, the gas-solid flow inlet communicates with the loading area; a gas flow outlet, the gas flow outlet communicates with the cavity; a ball dropping port, the ball dropping port is located at the lower part of the loading area, and the opening and closing of the ball dropping port are controlled by a control member.

2. The storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor according to claim 1, characterized in that, the loading area further includes a material guiding area, the material guiding area communicates the main loading area with the ball dropping port, and the cross-sectional area of at least part of the material guiding area gradually decreases from top to bottom.

3. The storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor according to claim 1, characterized in that, it further includes a screening and blocking member, and the screening and blocking member is arranged between the gas-solid flow inlet and the gas flow outlet.

4. The storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor according to claim 1, characterized in that, at least part of the tank body forms the loading area.

5. The storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor according to claim 1, characterized in that, the tank body further includes internal components, and at least part of the loading area is formed by the internal components.

6. The storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor according to claim 1, characterized in that, there is one preset material level detection area, there is one main loading area, the preset material level detection area is located above the main loading area, and the gas-solid flow inlet communicates with the preset material level detection area.

7. The storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor according to claim 1, characterized in that, there are multiple preset material level detection areas, there are multiple main loading areas, the loading area includes multiple storage units, one preset material level detection area and one main loading area form a storage unit, the main loading area of one of two adjacent storage units communicates with the preset material level detection area of the other, and the gas-solid flow inlet communicates with one of the multiple preset material level detection areas.

8. The storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor according to any one of claims 1-7, characterized in that, at least one of the outer peripheral contour of the cross-section of the preset material level detection area and the outer peripheral contour of the cross-section of the main loading area is circular.

9. A method for measuring the material level of the ball dropping hole channel of absorber spheres, characterized in that, it includes the storage sphere tank for absorber spheres of a high-temperature gas-cooled reactor according to any one of claims 1-8, and the measuring method includes the following steps: corresponding the material level height of the absorber spheres in the storage sphere tank to the material level height of the absorber spheres in the ball dropping hole channel; measuring the material level height of the absorber spheres in the storage sphere tank; obtaining the material level height of the absorber spheres in the ball dropping hole channel according to the material level height of the absorber spheres in the storage sphere tank.

10. The method for measuring the material level of the ball dropping hole channel according to claim 9, characterized in that, Measuring the level height of the absorption balls in the storage sphere tank includes: detecting that the level height of the absorption balls in the storage sphere tank reaches the preset level.

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