A ball dropping device for the absorption ball shutdown system of a pebble bed type high temperature gas-cooled reactor

Abstract

The present application proposes a ball-dropping device for a ball-bed type high-temperature gas-cooled reactor absorption ball shutdown system, comprising a ball storage tank, a ball-dropping tube, a driving device, a limiting device, an absorption ball driving mechanism controller and an absorption ball shutdown system driver, wherein the upper part of the ball-dropping tube is inserted into the ball storage tank through the ball-dropping port at the bottom of the ball storage tank, the driving plate on the ball-dropping tube is respectively connected to the driving device and the limiting device, the driving motor in the driving device drives the ball-dropping tube to move up and down by rotation, and the limiting device provides guidance for the displacement of the ball-dropping tube; the absorption ball driving mechanism controller is used to collect the material level signal of the ball storage tank in the ball storage tank, the limiting signal of the limiting device and the rotation signal of the driving device, and provide instructions to the host computer through the logic processor; the absorption ball shutdown system driver is used to receive the control signal of the absorption ball driving mechanism controller and control the rotation of the driving motor. The present application realizes quantitative delivery of absorption balls and increases the diversity of reactivity control of high-temperature gas-cooled reactors.

Description

Technical Field

[0001] The present application belongs to the field of reactor engineering technology, and in particular relates to a ball dropping device for a ball-absorbing shutdown system of a pebble-bed type high-temperature gas-cooled reactor. Background Art

[0002] The reactivity control system of the high-temperature gas-cooled reactor adopts both the absorption ball shutdown system and the control rod shutdown system. The control rod shutdown system serves as the main shutdown system, and the absorption balls serve as the backup shutdown system. The control rod shutdown system serves as the main control system and is inserted into the core from the top of the core to suppress the reactivity at the top of the core and move the power peak of the core downward. After the absorption balls enter the core, they accumulate from the bottom of the core and move the power peak of the core upward. The combination of the two can better flatten the core power peak.

[0003] The driving mechanism of the currently used absorption ball shutdown system can only achieve a one-time drop of balls, with all balls entering the core, and cannot achieve the function of adjusting the core reactivity by the amount of dropped balls. Summary of the invention

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, the present application proposes a ball dropping device for a ball bed type high temperature gas-cooled reactor absorption ball shutdown system to achieve quantitative delivery of absorption balls, realize a second reactivity control system, and increase the diversity of reactivity control of high temperature gas-cooled reactors.

[0006] The present invention is implemented by the following technical solutions:

[0007] A ball dropping device for a ball-absorbing shutdown system of a ball-bed high-temperature gas-cooled reactor, characterized in that it comprises a ball storage tank, a ball dropping tube, a driving device, a limiting device, an absorption ball driving mechanism controller and an absorption ball shutdown system driver, wherein:

[0008] The upper part of the ball drop tube is inserted into the ball storage tank through the ball drop opening at the bottom of the ball storage tank, the driving plate on the ball drop tube is connected to the driving device and the limiting device respectively, the driving motor in the driving device drives the ball drop tube to move up and down by rotating, and the limiting device provides guidance for the displacement of the ball drop tube;

[0009] The absorption ball driving mechanism controller is used to collect the material level signal of the ball storage tank in the ball storage tank, the limit signal of the limit device and the rotary signal of the driving device, and provide instructions to the host computer through the logic processor;

[0010] The absorbing ball shutdown system driver is used to receive the control signal of the absorbing ball driving mechanism controller and control the driving motor to rotate.

[0011] Optionally, the ball storage tank further comprises:

[0012] The ball storage tank is a cylindrical container with a ball hole at the center of the top, and the ball hole is conical;

[0013] A top material level meter is installed on the upper part of the ball storage tank, and a bottom material level meter is installed on the lower part. The top material level meter and the bottom material level meter are used to detect whether there are absorbing balls at the installation position and indicate the material level of the absorbing balls.

[0014] Optionally, the ball drop tube further comprises:

[0015] A slotted pipe, which is a long pipe with a top plug, a ball drop hole at the plugging end, and a conical top plug;

[0016] A driving plate, wherein the driving plate is a long plate structure, the middle opening is connected to the lead screw of the driving device and the middle opening has a spiral groove, the right end opening is connected to the guide rod of the limiting device, and the left side is connected to the bottom of the slotted tube;

[0017] A telescopic tube, wherein the lower portion of the slotted tube extends into the telescopic tube, and the slotted tube and the telescopic tube are matched and fixed via end flanges, so that when the slotted tube moves up and down, the telescopic tube moves along with it;

[0018] The telescopic tube extends into the fixed tube, so that the connection and closure of the ball-dropping tube are ensured when the slotted tube moves.

[0019] Optionally, the driving device further includes:

[0020] A driving motor, wherein the driving motor is a double-winding stepping motor;

[0021] A motor gear and a lead screw gear, wherein the motor gear and the lead screw gear are both cylindrical spur gears;

[0022] A lead screw, wherein the lead screw is a ball screw structure, and the ball is installed in the opening at the right end of the drive plate;

[0023] The main resolver and the auxiliary resolver are rotary transformers, which are used to measure the rotation angle of the ball screw structure and convert the induced voltage signal.

[0024] Optionally, the limiting device further includes:

[0025] A guide rod, which is a polished rod with a surface nitriding treatment, and cooperates with the right end hole of the driving plate to guide the up and down movement of the ball drop tube;

[0026] The upper limit switch and the lower limit switch are respectively installed at the two ends of the guide rod, and are triggered by the driving board when the ball drop tube moves to the upper limit or the lower limit to output a limit switch signal.

[0027] Optionally, the absorption ball drive mechanism controller includes a ball position monitoring module, a motion mode processing module and a fault signal processing module. The absorption ball drive mechanism controller is used to obtain a control signal C0 and a material level input signal C1 from the host computer, obtain a resolver signal Z0 from the main resolver, obtain a spare resolver signal Z1 from the auxiliary resolver, obtain an upper limit signal Z2 from the upper limit switch, obtain a lower limit signal Z3 from the lower limit switch, obtain a full material level signal Y0 from the top material level meter, obtain an empty material level signal Y1 from the bottom material level meter, and output a fault signal G0, an upper limit signal Z2, a lower limit signal Z3, and a material level signal A0 to the reactive control system.

[0028] Optionally, the ball position monitoring module is used for:

[0029] When the steering signal X1 is downward, the resolver signal Z0 is processed to obtain the ball drop tube position A1. When the value of A1 is smaller than the value of A0, A1 is assigned to A0, and the material level signal A0 is output to the reactive control system at the same time;

[0030] When the lower limit signal Z3 and the empty material level signal Y1 are triggered at the same time, A0 is assigned a value of 0;

[0031] When the upper limit signal Z2 and the full material level signal Y0 are triggered at the same time, A0 is assigned a value of 1.

[0032] Optionally, the motion mode processing module is used to:

[0033] When the control signal C0 is assigned a value of 2, the absorption ball driving mechanism controller sends a lifting ball drop pipe signal to the absorption ball shutdown system driver and triggers the upper limit signal Z2, and the absorption ball is added to the ball inlet at the upper part of the ball storage tank;

[0034] When the control signal C0 is assigned a value of 0, the material level input signal C1 is obtained, the ball drop tube position a0 is determined according to the material level signal C1, and a steering signal X1, a rotation signal X2 and a speed signal X3 are sent to the drive motor until the ball drop tube is in place. After the ball drop tube is in place time meets the preset time, the absorption ball drive mechanism controller sends a signal to the absorption ball shutdown system driver, and the drive motor rotates to return the ball drop tube to the top position, and triggers the upper limit signal Z2, wherein the steering signal X1 is a downward insertion.

[0035] When the control signal C0 is assigned a value of 1, the absorption ball drive mechanism controller sends a steering signal X1, a rotation signal X2 and a speed signal X3 to the drive motor until the lower limit Z3 signal is triggered and the drive motor stops rotating. At this time, the steering signal X1 is inserted downward, and the empty material level signal Y1 is triggered. The absorption ball drive mechanism controller sends a steering signal X1, a rotation signal X2 and a speed signal X3 to the drive motor until the upper limit Z2 signal is triggered to stop the motor rotation. At this time, the steering signal X1 is lifted.

[0036] Optionally, the fault signal processing module is used to:

[0037] When the deviation between the material level signal A0 obtained by the ball level monitoring module and the integral comparison of the rotation signal X2 time and the speed signal X3 of the motion mode processing module exceeds a first threshold, a driving device fault signal G1 is triggered;

[0038] When the empty material level signal Y1 is triggered but the lower limit signal Z3 is not triggered, the lower limit fault signal G2 is triggered;

[0039] When the full material level signal Y0 is triggered but the upper limit level signal Z2 is not triggered, the upper limit level fault signal G3 is triggered;

[0040] When the empty material level signal Y1 and the full material level signal Y0 are triggered simultaneously, the material level fault signal G4 is triggered;

[0041] When the steering signal X1 is rising, the resolver signal Z0 is processed to obtain the ball drop tube position A1, and when the value of A1 is greater than the second threshold, the over-limit signal G5 is triggered;

[0042] When the steering signal X1 is downward, the resolver signal Z0 is processed to obtain the ball drop tube position A1, and when the A1 value is less than the third threshold, the over-limit signal G5 is triggered;

[0043] When the ball drop tube position A1 is obtained by processing the resolver signal Z0, and the ball drop tube position A2 is obtained by processing the standby resolver signal Z1, when the deviation between A1 and A2 exceeds a fourth threshold, a material level signal fault G6 is triggered;

[0044] The G0 signal is outputted by performing an OR operation based on the G1, G2, G3, G4, G5 and G6 signals.

[0045] Optionally, the absorbing ball shutdown system driver is used to control the driving motor, and contains two power control modules inside. The power control module processes the steering signal X1, the rotation signal X2 and the speed signal X3, and then outputs a three-phase pulse signal of the driving motor to drive the driving motor to rotate, thereby realizing the lifting and lowering of the drop ball tube.

[0046] Beneficial effects of this application:

[0047] A quantitative ball dropping method is adopted to enable the absorbing balls to achieve quantitative reactivity control, increase the diversity of high-temperature reactor reactivity control, and improve the reliability of reactor operation; an integrated control system is adopted to integrate the motor drive mechanism, material level monitoring, and stroke control into the controller, so as to achieve a high degree of automation in the operation of the absorbing ball shutdown system; a top-loading uniform ball dropping method is adopted, and the absorbing balls are evenly distributed in the ball storage tank through the feeding holes set on the top, thereby improving the accuracy of the falling ball material level, realizing the flattening of the core power of the existing ball-bed high-temperature gas-cooled reactor, achieving quantitative delivery of absorbing balls, realizing the second set of reactivity control system, and increasing the diversity of high-temperature gas-cooled reactor reactivity control. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of a ball dropping device of a ball-bed type high temperature gas-cooled reactor absorption ball shutdown system proposed in the present application. DETAILED DESCRIPTION

[0049] The embodiments of the present application are described in detail below, and 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 be used to explain the present application, but cannot be understood as limiting the present application.

[0050] like Figure 1 As shown, the present application includes a ball storage tank 1, a ball drop tube 2, a driving device 3, a limiting device 4, an absorption ball driving mechanism controller 5 and an absorption ball shutdown system driver 6, wherein:

[0051] The upper 2 parts of the ball drop tube are inserted into the ball storage tank 1 through the ball drop opening at the bottom of the ball storage tank 1. The driving plate 202 on the ball drop tube 2 is connected to the driving device 3 and the limiting device 4 respectively. The driving motor 301 in the driving device 3 drives the ball drop tube 2 to move up and down by rotating, and the limiting device 4 provides guidance for the displacement of the ball drop tube 1.

[0052] The absorption ball driving mechanism controller 5 is used to collect the material level signal of the ball storage tank 102 in the ball storage tank 1, the limit signal of the limit device 4 and the rotary signal of the driving device 3, and provide instructions to the host computer through the logic processor;

[0053] The absorption ball shutdown system driver 6 is used to receive the control signal of the absorption ball driving mechanism controller 5 and control the driving motor 3-1 to rotate.

[0054] The internal structure and connection relationship of each module are described in detail below.

[0055] like Figure 1As shown, the ball storage tank 1 is a cylindrical container with a ball inlet 101 at the top center. The ball inlet is conical, with a large bottom opening and a small upper opening. A top level meter 103 is installed on the upper part of the ball storage tank 1, and a bottom level meter 104 is installed on the lower part. The top level meter 103 and the bottom level meter 104 can detect whether there are absorption balls at the installation position and indicate the level of the absorption balls.

[0056] In addition, the material level meter in the embodiment of the present application is a radio frequency admittance material level meter or a capacitive material level meter.

[0057] In a possible embodiment, the top material level meter 103 and the bottom material level meter 104 are both capacitive material level meters.

[0058] like Figure 1 As shown, the ball drop tube 2 is composed of a slotted tube 201 , a drive plate 202 , a telescopic tube 203 and a fixed tube 204 .

[0059] In the embodiment of the present application, the slotted tube 201 is a long tube with a top seal, a ball drop opening is opened at the sealed end, the top seal is conical, the top and bottom are pointed and the bottom is thick, and the tip has an arc transition.

[0060] The driving plate 202 is a long plate structure, with a middle opening connected to the lead screw 304 of the driving device 3 and a spiral groove in the middle opening, a right end opening connected to the guide rod 403 of the limiting device 4, and a left side connected to the bottom of the slotted tube 201, cooperating with the spiral groove of the lead screw 304, so that when the lead screw 304 rotates, the driving plate 202 moves up and down with it.

[0061] The lower part of the slotted tube 201 extends into the telescopic tube 203, and the slotted tube 201 and the telescopic tube 203 are matched and fixed through the end flanges, so that when the slotted tube 201 moves up and down, the telescopic tube 203 moves with it;

[0062] The telescopic tube 203 extends into the interior of the fixed tube 204, so that the ball-dropping tube 2 is connected and closed when the slotted tube 201 moves.

[0063] like Figure 1 As shown, the driving device 3 is composed of a driving motor 301 , a motor gear 302 , a lead screw gear 303 , a lead screw 304 , a primary resolver 305 , and a secondary resolver 306 .

[0064] In the embodiment of the present application, the driving motor 301 is a double-winding stepping motor, which adopts a double-winding design, one for use and one for backup, to improve reliability. The motor gear 302 and the screw gear 303 are both cylindrical spur gears, and the screw 304 is a ball screw structure. The ball is installed in the opening at the right end of the driving plate 202 of the ball drop tube 2. The main rotary transformer 305 and the auxiliary rotary transformer 306 are rotary transformers, which can measure the rotation angle of the ball screw and convert it into an induced voltage signal.

[0065] like Figure 1As shown, the limit device 4 is composed of a lower limit switch 401 , an upper limit switch 402 and a guide rod 403 .

[0066] In the embodiment of the present application, the guide rod 403 is a smooth rod whose surface is nitrided to improve wear resistance and surface hardness. It cooperates with the right end hole of the driving plate 202 to guide the up and down movement of the ball drop tube 1 and prevent the ball drop tube 1 from rotating. The upper limit switch 402 and the lower limit switch 401 are both travel switches or contact switches, which are installed at both ends of the guide rod 403. When the ball drop tube 1 moves to the upper limit or the lower limit, it is triggered by the driving plate 202 to output the limit position switch signal.

[0067] In a possible embodiment, the upper limit switch 402 and the lower limit switch 401 are both travel switches.

[0068] like Figure 1 As shown, the absorption ball driving mechanism controller 5 is a control logic processing device for the absorption ball, including a ball position monitoring module, a motion mode processing module and a fault signal processing module. The absorption ball driving mechanism controller 5 is used to obtain a control signal C0 and a material level input signal C1 from a host computer, obtain a resolver signal Z0 from a main resolver 305, obtain a spare resolver signal Z1 from a secondary resolver 306, obtain an upper limit signal Z2 from an upper limit switch 402, obtain a lower limit signal Z3 from a lower limit switch 401, obtain a full material level signal Y0 from a top material level meter 103, obtain a material level signal Y1 from a bottom material level meter 104, and output a fault signal G0, an upper limit signal Z2, a lower limit signal Z3, and a material level signal A0 to the reactive control system.

[0069] In the embodiment of the present application, the working logic of the ball position monitoring module is: when the steering signal X1 is inserted downward, the rotary transformer signal Z0 is processed to obtain the ball drop tube position A1. When the A1 value is smaller than the A0 value, A1 is assigned to A0, and the material level signal A0 is output to the reactive control system; when the lower limit signal Z3 and the empty material level signal Y1 are triggered at the same time, A0 is assigned to 0; when the upper limit signal Z2 and the full material level signal Y0 are triggered at the same time, A0 is assigned to 1.

[0070] The motion mode processing module determines the motion mode according to the control signal C0 input by the upstream machine, and performs the following operations according to different motion modes:

[0071] When the absorption balls are in the storage state, the control system assigns a control signal C0 of 2 to the absorption ball driving mechanism controller 5, starts the ball return mode, and the absorption ball driving mechanism controller 5 sends a ball drop pipe lifting signal to the absorption ball stop system driver 6 to trigger the upper limit signal Z2, and the absorption balls are added to the ball inlet 101 at the upper part of the ball storage tank 1;

[0072] When the absorption ball drops to adjust the core reactivity, the control system assigns a value of 0 to the control signal C0 sent to the absorption ball driving mechanism controller 5, starts the ball dropping mode, obtains the material level input signal C1, determines the ball dropping tube position a0 according to the material level signal C1, and sends a steering signal X1, a rotation signal X2 and a speed signal X3 to the driving motor 301 until the ball dropping tube is in place. After the ball dropping tube is in place for a preset time, the absorption ball driving mechanism controller 5 sends a signal to the absorption ball shutdown system driver 6, which drives the motor 301 to rotate and returns the ball dropping tube to the top position, and triggers the upper limit signal Z2, wherein the steering signal X1 is a downward insertion.

[0073] When the absorption ball drops and stops the stack, the control system assigns a value of 1 to the control signal C0 sent to the absorption ball drive mechanism controller 5, and the shutdown mode is started. The absorption ball drive mechanism controller 5 sends a steering signal X1, a rotation signal X2 and a speed signal X3 to the drive motor 301 until the lower limit Z3 signal is triggered and the drive motor 301 stops rotating. At this time, the steering signal X1 is inserted downward, and the empty material level signal Y1 is triggered. The absorption ball drive mechanism controller 5 sends a steering signal X1, a rotation signal X2 and a speed signal X3 to the drive motor 302 until the upper limit Z2 signal is triggered to stop the motor rotation. At this time, the steering signal X1 is lifted.

[0074] The working logic of the fault signal processing module is:

[0075] When the deviation between the material level signal A0 obtained by the ball level monitoring module and the integral comparison of the rotation signal X2 time and the speed signal X3 of the motion mode processing module exceeds the first threshold, the driving device fault signal G1 is triggered;

[0076] When the empty material level signal Y1 is triggered but the lower limit signal Z3 is not triggered, the lower limit fault signal G2 is triggered;

[0077] When the full material level signal Y0 is triggered but the upper limit signal Z2 is not triggered, the upper limit fault signal G3 is triggered;

[0078] When the empty material level signal Y1 and the full material level signal Y0 are triggered at the same time, the material level fault signal G4 is triggered;

[0079] When the steering signal X1 is raised, the resolver signal Z0 is processed to obtain the ball drop tube position A1. When the A1 value is greater than the second threshold, the over-limit signal G5 is triggered;

[0080] When the steering signal X1 is downward, the resolver signal Z0 is processed to obtain the ball drop tube position A1. When the A1 value is less than the third threshold, the over-limit signal G5 is triggered;

[0081] When the ball drop tube position A1 is obtained by processing the resolver signal Z0, and the ball drop tube position A2 is obtained by processing the standby resolver signal Z1, when the deviation between A1 and A2 exceeds the fourth threshold, the material level signal fault G6 is triggered;

[0082] The G0 signal is output based on the OR operation of the G1, G2, G3, G4, G5 and G6 signals.

[0083] In a possible embodiment, the first threshold is 5%, the second threshold is 1.05, and the third threshold is 5%.

[0084] like Figure 1 As shown, the absorption ball shutdown system driver 6 is used to control the drive motor 301, and contains two power control modules inside. Each module is independently connected to a winding of the drive motor 301, and both can realize the rotation control of the drive motor 301; the two control modules are backup for each other. When one module fails, the other module is immediately activated. The absorption ball shutdown system driver 6 obtains the steering signal X1, the rotation signal X2 and the speed signal X3 from the absorption ball driving mechanism controller 5, and then processes and outputs the three-phase pulse signal of the drive motor through the control module, so as to control the rotation of the drive motor 301 and realize the lifting and lowering of the drop tube 2.

[0085] The embodiment of the present application adopts a quantitative ball dropping method to enable the absorption balls to achieve quantitative reactivity control, increase the diversity of high-temperature reactor reactivity control, and improve the reliability of reactor operation; adopts an integrated control system to integrate the motor drive mechanism and material level monitoring and stroke control into the controller, so as to achieve high automation of the operation of the absorption ball shutdown system; adopts top loading and uniform ball dropping, and realizes uniform distribution of the absorption balls in the ball storage tank through the loading holes set on the top, improves the accuracy of the ball dropping material level, realizes the flattening of the core power of the existing ball bed type high-temperature gas-cooled reactor, realizes quantitative delivery of absorption balls, realizes a second set of reactivity control system, and increases the diversity of high-temperature gas-cooled reactor reactivity control.

[0086] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0087] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0089] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0090] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, 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, without contradiction.

[0091] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present application. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present application.

Claims

1. A ball dropping device for a ball-absorbing shutdown system of a pebble-bed high-temperature gas-cooled reactor, characterized in that: It includes a ball storage tank, a ball drop tube, a driving device, a limit device, an absorption ball driving mechanism controller and an absorption ball shutdown system driver, wherein: The upper part of the ball drop tube is inserted into the ball storage tank through the ball drop opening at the bottom of the ball storage tank, the driving plate on the ball drop tube is connected to the driving device and the limiting device respectively, the driving motor in the driving device drives the ball drop tube to move up and down by rotating, and the limiting device provides guidance for the displacement of the ball drop tube; The absorption ball driving mechanism controller is used to collect the material level signal of the ball storage tank in the ball storage tank, the limit signal of the limit device and the rotary signal of the driving device, and provide instructions to the host computer through the logic processor; The absorbing ball shutdown system driver is used to receive the control signal of the absorbing ball driving mechanism controller and control the driving motor to rotate; The ball drop tube also includes: a slotted tube, a drive plate, a telescopic tube and a fixed tube, wherein: The slotted tube is a long tube with a top plug, a ball drop hole is opened at the plugging end, and the top plug is conical; The driving plate is a long plate structure, the middle opening is connected to the lead screw of the driving device and has a spiral groove, the right end opening is connected to the guide rod of the limiting device, and the left side is connected to the bottom of the slotted tube; The lower part of the slotted tube extends into the telescopic tube, and the slotted tube and the telescopic tube are matched and fixed through end flanges, so that when the slotted tube moves up and down, the telescopic tube moves along with it; The telescopic tube extends into the interior of the fixed tube, so that the connection and closure of the ball-dropping tube are ensured when the slotted tube moves.

2. The device according to claim 1, characterized in that The ball storage tank also includes: The ball storage tank is a cylindrical container with a ball hole at the center of the top, and the ball hole is conical; A top material level meter is installed on the upper part of the ball storage tank, and a bottom material level meter is installed on the lower part. The top material level meter and the bottom material level meter are used to detect whether there are absorbing balls at the installation position and indicate the material level of the absorbing balls.

3. The device according to claim 1, characterized in that The driving device further comprises: A driving motor, wherein the driving motor is a double-winding stepping motor; A motor gear and a lead screw gear, wherein the motor gear and the lead screw gear are both cylindrical spur gears; A lead screw, wherein the lead screw is a ball screw structure, and the ball is installed in the opening at the right end of the drive plate; The main resolver and the auxiliary resolver are rotary transformers, which are used to measure the rotation angle of the ball screw structure and convert the induced voltage signal.

4. The device according to claim 1, characterized in that The limiting device also includes: A guide rod, which is a polished rod with a surface nitriding treatment, and cooperates with the right end hole of the driving plate to guide the up and down movement of the ball drop tube; The upper limit switch and the lower limit switch are respectively installed at the two ends of the guide rod, and are triggered by the driving board when the ball drop tube moves to the upper limit or the lower limit to output a limit switch signal.

5. The device according to claim 1, characterized in that The absorption ball driving mechanism controller includes a ball position monitoring module, a motion mode processing module and a fault signal processing module. The absorption ball driving mechanism controller is used to obtain a control signal C0 and a material level input signal C1 from the host computer, obtain a rotary transformer signal Z0 from the main rotary transformer of the driving device, obtain a spare rotary transformer signal Z1 from the auxiliary rotary transformer of the driving device, obtain an upper limit signal Z2 from the upper limit switch of the limit device, obtain a lower limit signal Z3 from the lower limit switch of the limit device, obtain a full material level signal Y0 from the top material level meter of the ball storage tank, obtain an empty material level signal Y1 from the bottom material level meter of the ball storage tank, and output an output fault signal G0, an upper limit signal Z2, a lower limit signal Z3, and a material level signal A0 to the reactive control system; the absorption ball driving mechanism controller sends a steering signal X1, a rotation signal X2 and a speed signal X3 to the driving motor.

6. The device according to claim 5, characterized in that The ball position monitoring module is used for: When the steering signal X1 is downward, the resolver signal Z0 is processed to obtain the ball drop tube position A1. When the value of A1 is smaller than the value of A0, A1 is assigned to A0, and the material level signal A0 is output to the reactive control system at the same time; When the lower limit signal Z3 and the empty material level signal Y1 are triggered at the same time, A0 is assigned a value of 0; When the upper limit signal Z2 and the full material level signal Y0 are triggered at the same time, A0 is assigned a value of 1.

7. The device according to claim 5, characterized in that The motion mode processing module is used for: When the control signal C0 is assigned a value of 2, the absorption ball driving mechanism controller sends a lifting ball drop pipe signal to the absorption ball shutdown system driver to trigger the upper limit signal Z2, and the absorption ball is added to the ball inlet at the top of the ball storage tank; When the control signal C0 is assigned a value of 0, the material level input signal C1 is obtained, the ball drop tube position a0 is determined according to the material level signal C1, and a steering signal X1, a rotation signal X2 and a speed signal X3 are sent to the drive motor until the ball drop tube is in place. After the ball drop tube is in place for a preset time, the absorption ball drive mechanism controller sends a signal to the absorption ball shutdown system driver, and the drive motor rotates to return the ball drop tube to the top position, and triggers the upper limit signal Z2, wherein the steering signal X1 is a downward insertion; When the control signal C0 is assigned a value of 1, the absorption ball drive mechanism controller sends a steering signal X1, a rotation signal X2 and a speed signal X3 to the drive motor until the lower limit Z3 signal is triggered and the drive motor stops rotating. At this time, the steering signal X1 is inserted downward, and the empty material level signal Y1 is triggered. The absorption ball drive mechanism controller sends a steering signal X1, a rotation signal X2 and a speed signal X3 to the drive motor until the upper limit Z2 signal is triggered to stop the motor rotation. At this time, the steering signal X1 is lifted.

8. The device according to claim 5, characterized in that The fault signal processing module is used for: When the deviation between the material level signal A0 obtained by the ball level monitoring module and the integral comparison of the rotation signal X2 time and the speed signal X3 of the motion mode processing module exceeds a first threshold, a driving device fault signal G1 is triggered; When the empty material level signal Y1 is triggered but the lower limit signal Z3 is not triggered, the lower limit fault signal G2 is triggered; When the full material level signal Y0 is triggered but the upper limit level signal Z2 is not triggered, the upper limit level fault signal G3 is triggered; When the empty material level signal Y1 and the full material level signal Y0 are triggered simultaneously, the material level fault signal G4 is triggered; When the steering signal X1 is rising, the resolver signal Z0 is processed to obtain the ball drop tube position A1, and when the value of A1 is greater than the second threshold, the over-limit signal G5 is triggered; When the steering signal X1 is downward, the resolver signal Z0 is processed to obtain the ball drop tube position A1, and when the A1 value is less than the third threshold, the over-limit signal G5 is triggered; When the ball drop tube position A1 is obtained by processing the resolver signal Z0, and the ball drop tube position A2 is obtained by processing the standby resolver signal Z1, when the deviation between A1 and A2 exceeds a fourth threshold, a material level signal fault G6 is triggered; The G0 signal is output based on the OR operation of the G1, G2, G3, G4, G5 and G6 signals.

9. The device according to claim 7, characterized in that The absorbing ball shutdown system driver is used to control the driving motor and contains two power control modules. The power control module processes the steering signal X1, the rotation signal X2 and the speed signal X3 and then outputs a three-phase pulse signal of the driving motor to control the rotation of the driving motor to realize the lifting and lowering of the ball drop tube.

Images