Resin transmission metering method and device for nuclear power plant resin waste cement solidification

Abstract

The invention discloses a resin transmission metering method and device for cement solidification of resin waste in a nuclear power plant, and the method comprises the steps: controlling a resin transmission control valve and a water transmission control valve to be opened alternately, so as to adjust the proportion of resin to water in the resin transmitted in a pipeline; and the resin is more stably conveyed in the pipeline. A resin liquid level switch is improved to be a tuning fork type material switch, a process control flow of resin metering operation is modified, and whether a resin dehydration flow is started or not is judged according to an input signal of a second resin liquid level switch and an induction signal of a height sensor, so that sufficient resin is output into a resin metering tank for dehydration treatment; and a resin conveying mode is modified, and a resin gravity comb row and a water injection pipeline flushing row mode are utilized to prevent the resin from being damaged and blocking a filter screen due to extrusion of a screw pump on the resin, so that the reliability of resin conveying and metering is improved.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power, and in particular to a resin transmission metering method and device for cement solidification of resin waste in nuclear power plants. Background Art

[0002] In the process of automatically producing waste resin cement solidification bodies through the solid waste treatment system (TES) of nuclear power plants, resin transmission and metering are required first. In the process of the existing TES cement solidification line performing the waste resin solidification metering task, problems such as overload tripping of the resin transmission pump, failure to transfer enough resin to the resin metering tank, clogging of the filter screen of the dehydration component in the waste resin metering tank, and small effective volume of the resin metering tank occur, which seriously restricts the automatic production of resin solidification bodies and becomes one of the key issues restricting the safe, stable and efficient production of nuclear power plants.

[0003] The existing pipeline design for resin transmission and metering is as follows: Figure 1 As shown, the resin stored in the resin temporary storage tank is transferred to the resin metering tank by the screw transfer pump PO1, and the resin metering tank is dehydrated to complete the resin metering. However, in the actual application process, it is found that Figure 1 The pipeline design of resin transmission and metering shown in the figure has the following problems: 1. When performing the waste resin solidification metering task, since the density of water-saturated resin is greater than the density of water, the resin in the temporary storage tank is concentrated at the bottom of the tank. After the pump is started, the resin enters the pump cavity of the screw pump through the pipeline. The pump cavity of the screw pump experiences dry grinding during the extrusion of the medium, resulting in increased vibration of the pump body and a sharp drop in the motor speed, making it impossible to smoothly transport the resin to the resin metering tank. 2. During use, the system also failed to transmit enough resin to the resin metering tank, resulting in the failure to trigger the fat level switch in the resin metering tank, which resulted in the inability to smoothly enter the subsequent control process. 3. When performing the waste resin solidification metering task, the pump cavity of the screw pump continued to operate, but the liquid level in the resin metering tank did not change significantly. It was observed that no fluid flowed through the dehydration pump; after stopping the dehydration task, the dehydration component filter screen of the resin metering tank was observed through a peephole, and it was found that there were resin fragments in the gap of the filter screen. The resin fragments blocked the filter screen, causing water to be unable to pass through the filter into the dehydration pump, resulting in the failure of resin dehydration. 4. The effective volume of the resin metering tank is too small and cannot reach the designed volume of the resin metering tank.

[0004] Therefore, the resin transmission metering method of the nuclear power plant in the prior art method has the problem of poor metering operation reliability. Summary of the invention

[0005] The embodiment of the present invention provides a resin transmission metering method and device for cement solidification of resin waste in nuclear power plants, aiming to solve the problem of poor metering operation reliability of the resin transmission metering method for nuclear power plants in the prior art.

[0006] In a first aspect, an embodiment of the present invention provides a resin transmission metering method for cement solidification of resin waste in a nuclear power plant, wherein the resin transmission metering method is applied to a controller, wherein the controller is communicatively connected to a sixth control valve provided in a resin transmission pipeline, wherein one end of the resin transmission pipeline is connected to a resin metering tank, and the other end is simultaneously connected to a resin output pipeline and a water output pipeline of at least one resin temporary storage tank, wherein the controller is also communicatively connected to a resin transmission control valve provided on the resin output pipeline and a water transmission control valve provided on the water output pipeline, wherein one end of an auxiliary transmission pipeline is connected to the resin metering tank, and the other end is connected to a pipeline in the resin transmission pipeline located upstream of the sixth control valve, wherein a fifth control valve on the auxiliary transmission pipeline is communicatively connected to the controller; wherein the controller is also communicatively connected to a first resin liquid level switch, a second resin liquid level switch and a height sensor provided in the resin metering tank, wherein the resin metering tank is also connected to a concentrated liquid metering tank via a dehydration pipeline, and a seventh control valve and a dehydration pump provided on the dehydration pipeline are both communicatively connected to the controller, wherein the resin transmission metering method comprises:

[0007] If a resin loosening instruction is received, an opening instruction is sent to the sixth control valve;

[0008] Sending corresponding control instructions to the resin transmission control valve and the water transmission control valve respectively according to a preset alternating control strategy to control the resin transmission control valve and the water transmission control valve to be opened alternately;

[0009] determining whether a trigger signal of the first resin liquid level switch is received;

[0010] If a trigger signal is received, a closing command is sent to the sixth control valve and an opening command is sent to the fifth control valve at the same time, so as to transfer the resin to the resin metering tank through the auxiliary transfer pipeline;

[0011] Determining whether the input signal of the second resin liquid level switch and the sensing signal of the height sensor meet the preset dehydration operation conditions;

[0012] If the dehydration operation condition is met, an opening instruction is sent to the seventh control valve and the dehydration pump is controlled to run for a preset dehydration time and then stop;

[0013] Determine whether the trigger signals of the first resin liquid level switch and the second resin liquid level switch are not received, and obtain a trigger determination result of whether both are not triggered;

[0014] If the trigger judgment result is that none of the triggers are triggered, sending an opening instruction to the fifth control valve to transfer the resin to the resin metering tank through the auxiliary transfer pipeline;

[0015] If a trigger signal of the first resin liquid level switch or a trigger signal of the second resin liquid level switch is received, a closing command is sent to the fifth control valve and water is injected into the resin metering tank through the water injection pipeline;

[0016] If the trigger judgment result is triggered, water is injected into the resin metering tank through a water injection pipeline.

[0017] In a second aspect, an embodiment of the present application further provides a resin transmission metering device for solidifying resin waste cement in a nuclear power plant, wherein a controller in the resin transmission metering device is used to execute the resin transmission metering method for solidifying resin waste cement in a nuclear power plant as described in the first aspect above, and the resin transmission metering device includes:

[0018] a first instruction sending unit, configured to send an opening instruction to the sixth control valve upon receiving a resin loosening instruction;

[0019] A second instruction sending unit, used for sending corresponding control instructions to the resin transmission control valve and the water transmission control valve respectively according to a preset alternating control strategy, so as to control the resin transmission control valve and the water transmission control valve to be opened alternately;

[0020] A first judging unit, used to judge whether a trigger signal of the first resin liquid level switch is received;

[0021] a third instruction sending unit, configured to send a closing instruction to the sixth control valve and an opening instruction to the fifth control valve upon receiving a trigger signal, so as to transfer the resin to the resin metering tank through the auxiliary transfer pipeline;

[0022] A second judging unit, used for judging whether the input signal of the second resin liquid level switch and the sensing signal of the height sensor meet the preset dehydration operation conditions;

[0023] A fourth instruction sending unit, configured to send an opening instruction to the seventh control valve and control the dehydration pump to stop after running for a preset dehydration time if the dehydration operation condition is met;

[0024] A third judgment unit is used to judge whether the trigger signals of the first resin liquid level switch and the second resin liquid level switch are not received, and obtain a trigger judgment result of whether the trigger signals are not triggered;

[0025] a fifth instruction sending unit, configured to send an opening instruction to the fifth control valve if the trigger judgment result is that none of the triggers are triggered, so as to transfer the resin to the resin metering tank through the auxiliary transfer pipeline;

[0026] a sixth instruction sending unit, configured to send a closing instruction to the fifth control valve and inject water into the resin metering tank through a water injection pipeline if receiving a trigger signal from the first resin liquid level switch or receiving a trigger signal from the second resin liquid level switch;

[0027] A water injection control unit is used to inject water into the resin metering tank through a water injection pipeline if the trigger judgment result is triggered.

[0028] In a third aspect, an embodiment of the present application further provides a resin transmission metering device for cement solidification of resin waste in a nuclear power plant, the resin transmission metering device comprising a controller, a resin metering tank, a concentrate metering tank and at least one resin temporary storage tank;

[0029] The controller is connected in communication with the sixth control valve provided in the resin delivery pipeline. One end of the resin delivery pipeline is connected to the resin metering tank, and the other end is connected to the resin output pipeline and the water output pipeline of at least one resin temporary storage tank at the same time. The controller is also connected in communication with the resin transmission control valve provided on the resin output pipeline and the water transmission control valve provided on the water output pipeline. One end of the auxiliary transmission pipeline is connected to the resin metering tank, and the other end is connected to the pipeline in the resin delivery pipeline located upstream of the sixth control valve. The fifth control valve on the auxiliary transmission pipeline is connected in communication with the controller. The controller is also connected in communication with the first resin liquid level switch, the second resin liquid level switch and the height sensor provided in the resin metering tank. The resin metering tank is also connected to the concentrated liquid metering tank through the dehydration pipeline. The seventh control valve and the dehydration pump provided on the dehydration pipeline are both connected in communication with the controller.

[0030] The first resin liquid level switch and the second resin liquid level switch are both tuning fork type material switches;

[0031] The controller includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0032] Memory, used to store computer programs;

[0033] The processor is used to implement the resin transmission metering method for cement solidification of resin waste in nuclear power plants as described in the first aspect when executing the program stored in the memory.

[0034] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the resin transfer metering method for cement solidification of resin waste in nuclear power plants as described in the first aspect are implemented.

[0035] The embodiment of the present invention provides a resin transmission metering method and device for cement solidification of resin waste in nuclear power plants. The resin transmission metering method controls the resin transmission control valve and the water transmission control valve to be opened alternately, thereby adjusting the specific gravity of resin and water in the resin transmitted in the pipeline, so that the transmission of the resin in the pipeline is more stable; the resin liquid level switch is improved to a tuning fork material switch, and the process control flow of the resin metering operation is modified, and the input signal of the second resin liquid level switch and the sensing signal of the height sensor are used to determine whether to start the resin dehydration process, so as to output a sufficient amount of resin to the resin metering tank for dehydration treatment; the resin transmission method is modified, and the resin gravity combing and water injection pipeline flushing methods are used to avoid the screw pump from squeezing the resin, resulting in resin damage and clogging the filter, thereby improving the reliability of resin transmission and metering. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0037] Figure 1 Pipe connection diagram for the resin transfer and metering pipeline design in the existing design;

[0038] Figure 2 A method flow chart of a resin transmission metering method for cement solidification of resin waste in a nuclear power plant provided by an embodiment of the present invention;

[0039] Figure 3 A schematic block diagram of a resin transmission metering device for cement solidification of resin waste in a nuclear power plant provided by an embodiment of the present invention;

[0040] Figure 4 A pipeline connection diagram of a resin transmission metering device for cement solidification of resin waste in a nuclear power plant provided by an embodiment of the present invention;

[0041] Figure 5 A schematic block diagram of a resin transmission metering device for cement solidification of resin waste in a nuclear power plant provided by an embodiment of the present invention;

[0042] Figure 6 A cross-sectional structural diagram of a resin metering tank in a resin transmission metering device for cement solidification of resin waste in a nuclear power plant provided by an embodiment of the present invention;

[0043] Figure 7 A schematic block diagram of a computer device provided in an embodiment of the present invention.

[0044] Attached figure markings: 10, controller; 2, resin delivery pipeline; VS6, sixth control valve; 3, resin metering tank; 4, resin temporary storage tank; VS1, resin transmission control valve; VS2, water transmission control valve; 5, auxiliary transmission pipeline; VS5, fifth control valve; 31, first resin liquid level switch; 32, second resin liquid level switch; 33, height sensor; 6, dehydration pipeline; 7, concentrate metering tank; VS7, seventh control valve; PO2, dehydration pump; PO3, water injection pump; VS8, eighth control valve; VS9, ninth control valve; VS10, tenth control valve; L1, first flow meter; L2, second flow meter; VS0, reflux control valve; VSQ, sampling control valve; QS, sampler; 8, connecting pipe. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0047] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0048] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0049] See also Figure 2 As shown in the figure, the present application embodiment discloses a resin transmission metering method for cement solidification of resin waste in nuclear power plants. Please refer to 4 and Figure 5 The resin transfer metering method is applied to the following structural designs: Figure 5 The device structure shown and Figure 4In the pipeline design shown in the figure; specifically, the method is applied to the controller 10, and the method is executed by the application software installed in the controller 10; the controller 10 is connected to the sixth control valve VS6 provided in the resin delivery pipeline 2 for communication, one end of the resin delivery pipeline 2 is connected to the resin metering tank 3, and the other end is connected to the resin output pipeline and the water output pipeline of at least one resin temporary storage tank 4 at the same time, the controller 10 is also connected to the resin transmission control valve VS1 provided on the resin output pipeline, and the water transmission control valve VS2 provided on the water output pipeline for communication, and one end of the auxiliary transmission pipeline 5 is connected to the resin metering tank 3, and the other end is connected to the resin output pipeline and the water output pipeline of at least one resin temporary storage tank 4 at the same time, and the controller 10 is also connected to the resin transmission control valve VS1 provided on the resin output pipeline, and the water transmission control valve VS2 provided on the water output pipeline. The resin metering tank 3 is connected to the resin delivery pipeline 2, and the other end is connected to the pipeline located upstream of the sixth control valve VS6. The fifth control valve VS5 on the auxiliary transmission pipeline 5 is connected to the controller 10 in communication. The controller 10 is also connected to the first resin level switch 31, the second resin level switch 32 and the height sensor 33 provided in the resin metering tank 3 in communication. The resin metering tank 3 is also connected to the concentrated liquid metering tank 7 through the dehydration pipeline 6. The seventh control valve VS7 and the dehydration pump PO2 provided on the dehydration pipeline 6 are both connected to the controller 10 in communication. The controller 10 is a processor for issuing control instructions to control various components, such as a programmable logic controller (PLC) or other terminal devices, such as a laptop computer, a desktop computer, a tablet computer or a mobile phone.

[0050] like Figure 1 As shown, the method includes steps S101 to S110.

[0051] S101: If a resin loosening instruction is received, an opening instruction is sent to the sixth control valve.

[0052] If the resin loosening instruction is received, an opening instruction is sent to the sixth control valve. If the controller receives the resin loosening instruction, it indicates that the overall process of resin transmission and curing is started, and an opening instruction can be sent to the sixth control valve to control the opening of the sixth control valve. At this time, the pipelines at both ends of the sixth control valve are in a connected state. At the same time, the controller can send an opening instruction to the third control valve VS3 and the fourth control valve VS4, so that the third control valve VS3 and the fourth control valve VS4 are opened synchronously. Figure 4 SED is SED demineralized water, SRE is radioactive wastewater, and SAT is compressed air.

[0053] S102 , sending corresponding control instructions to the resin transmission control valve and the water transmission control valve respectively according to a preset alternating control strategy, so as to control the resin transmission control valve and the water transmission control valve to be opened alternately.

[0054] According to the preset alternating control strategy, corresponding control instructions are sent to the resin transmission control valve and the water transmission control valve respectively to control the resin transmission control valve and the water transmission control valve to be opened alternately. The length of the resin transmission pipeline is relatively long. Further, in order to improve the transmission reliability of the resin in the resin transmission pipeline, corresponding control instructions can be sent to the resin transmission control valve and the water transmission control valve respectively according to the alternating control strategy, and the resin transmission control valve and the water transmission control valve are opened alternately according to the received control instructions. By controlling the resin transmission control valve and the water transmission control valve to be opened alternately, the specific gravity of the resin and the water in the transmitted resin is adjusted, the reliability of the resin transmission is improved, and the blockage during the resin transmission process is avoided.

[0055] In a more specific embodiment, step S102 specifically includes the following steps: determining the sending interval of the opening control instruction and the closing control instruction according to the duty ratio and cycle duration in the alternating control strategy; and periodically sending the opening control instruction and the closing control instruction to the resin transmission control valve and the water transmission control valve according to the sending interval. Wherein, the duty ratio is 1:1.

[0056] Specifically, the control instructions sent to the resin transfer control valve and the water transfer control valve include open control instructions and close control instructions. The sending interval of the open control instructions and the close control instructions can be determined according to the duty cycle and cycle duration set in the alternating control strategy. For example, the cycle duration can be 60 seconds, and the interval time for cyclically sending two adjacent groups of control instructions to the same control valve is 60 seconds. The duty cycle can determine the sending interval time between the open control instruction and the close control instruction in a group of control instructions. For example, if the duty cycle is 1:1, the sending interval time between the open control instruction and the close control instruction is 30 seconds; if the duty cycle is 2:1, the sending interval time between the open control instruction and the close control instruction is 40 seconds, and the sending interval time between the close control instruction and the subsequent open control instruction is 20 seconds.

[0057] According to the determined sending interval time, the opening control instruction and the closing control instruction can be periodically sent to the resin transfer control valve and the water transfer control valve, that is, two groups of control instructions are sent to the resin transfer control valve and the water transfer control valve respectively. After sending a group of control instructions including the opening control instruction and the closing control instruction to a control valve, the next group of control instructions is sent after the interval period; in order to improve the transmission efficiency, the duty cycle can be set to 1:1, so as to control the resin transfer control valve and the water transfer control valve to be opened alternately.

[0058] In a more specific embodiment, the periodic sending of the opening control instruction and the closing control instruction to the resin transfer control valve and the water transfer control valve according to the sending interval time includes: sending the opening control instruction to the resin transfer control valve while sending the closing control instruction to the water transfer control valve and recording the corresponding first sending time; if the time point of the sending interval time is reached from the first sending time, sending the closing control instruction to the resin transfer control valve while sending the opening control instruction to the water transfer control valve and recording the corresponding second sending time; if the time point of the sending interval time is reached from the second sending time, returning to execute the step of sending the opening control instruction to the resin transfer control valve while sending the closing control instruction to the water transfer control valve and recording the corresponding first sending time.

[0059] The specific process of controlling the resin transfer control valve and the water transfer control valve can be: sending an open control instruction to the resin transfer control valve and sending a close control instruction to the water transfer control valve. After a sending interval time between the open control instruction and the close control instruction in a group of control instructions, a close control instruction is sent to the resin transfer control valve and an open control instruction is sent to the water transfer control valve. The corresponding control instructions are sent repeatedly according to the duty cycle and cycle duration set in the alternating control strategy, thereby realizing the control of the resin transfer control valve and the water transfer control valve to be alternately opened.

[0060] S103: Determine whether a trigger signal from the first resin liquid level switch is received.

[0061] Determine whether the trigger signal of the first resin liquid level switch is received. Further determine whether the trigger signal of the first resin liquid level switch is received, if the resin liquid level in the resin metering tank reaches the position of the first resin liquid level switch, the first resin liquid level switch sends a trigger signal to the controller.

[0062] S104: If a trigger signal is received, a closing command is sent to the sixth control valve and an opening command is sent to the fifth control valve at the same time, so as to transfer the resin to the resin metering tank through the auxiliary transfer pipeline.

[0063] If a trigger signal is received, a closing command is sent to the sixth control valve and an opening command is sent to the fifth control valve, so that the resin is transferred to the resin metering tank through the auxiliary transfer pipeline. If a trigger signal is received from the first resin liquid level switch, a closing command is sent to the sixth control valve; and an opening command is sent to the fifth control valve at the same time, so that the fifth control valve is turned on, and the resin can be transferred to the resin metering tank through the auxiliary transfer pipeline.

[0064] S105: Determine whether the input signal of the second resin liquid level switch and the sensing signal of the height sensor meet preset dehydration operation conditions.

[0065] Determine whether the input signal of the second resin liquid level switch and the sensing signal of the height sensor meet the preset dehydration operation conditions. The input signal of the second resin liquid level switch and the sensing signal of the height sensor can be further obtained to determine whether the input signal and the sensing signal meet the dehydration operation conditions. Here, the judgment process of triggering the dehydration task is optimized by adding the sensing signal of the height sensor to avoid the problem of not being able to smoothly enter the subsequent control process.

[0066] In the existing pipeline design, the maximum height difference H1 between the upstream pipeline and the downstream pipeline of the sixth control valve is 2.8 meters. When the resin metering tank stops resin transmission and starts the dehydration process, the resin in the resin delivery pipeline will sink to the bottom of the pipeline due to the height difference, and the pipeline with a total volume of 5.5L in the middle section of the resin delivery pipeline is filled with SED water but no resin. According to the traditional control process, when a trigger signal is received from the first resin liquid level switch, the resin transmission is stopped and the resin dehydration process is performed; due to the dehydration process, the liquid level in the resin metering tank drops, and the resin transmission is restarted after the trigger signal disappears. Since the 5.5L pipeline is full of SED water at this time, the first resin liquid level switch is triggered again after 5.5L water is transmitted to the resin metering tank, and the execution step falls into an infinite loop and the last 5.5L resin is transmitted to the resin metering tank, resulting in the inability to perform the subsequent waste resin solidification metering steps.

[0067] In a more specific embodiment, step S105 specifically includes the following steps: determine whether the input signal is a trigger signal and determine whether the sensing signal is not less than the height threshold set in the dehydration operation condition, obtain a first judgment result and record the corresponding judgment time point; determine whether the delay time point is reached, and the delay time point is a time point that is separated from the judgment time point by a preset time length in the dehydration operation condition; if the delay time point is reached, determine again whether the input signal is a trigger signal and determine whether the sensing signal is not less than the height threshold, and obtain a second judgment result; if the first judgment result and the second judgment result are both yes, it is determined that the dehydration operation condition is met; if the second judgment result is no, it is determined that the dehydration operation condition is not met.

[0068] Specifically, the judgment process of triggering the dehydration task is optimized. First, it can be judged whether the input signal is a trigger signal, and at the same time, it can be judged whether the sensing signal is not less than the set height threshold. For example, the height threshold can be set to 850mm. If the sensing signal is greater than the height threshold, it is determined that the liquid level of the resin metering tank has reached 850mm. If the input signal is a trigger signal and the sensing signal is not less than the set height threshold, the first judgment result is obtained, and the judgment time point corresponding to the first judgment result needs to be recorded at this time. Determine whether the corresponding delay time point has been reached. For example, if the preset time length is set to 30 seconds, it can be determined whether 30 seconds have passed after the first judgment result is obtained, so as to determine whether the delay time point has been reached. If the delay time point is reached, it is again determined whether the input signal is a trigger signal, and it is determined whether the sensing signal is not less than the height threshold, so as to obtain the second judgment result. If the first judgment result is and the second judgment result are both yes at this time, it is determined that the dehydration operation conditions are met and the resin dehydration cycle processing is started. If the second judgment result is no, it is determined that the dehydration operation conditions are not met.

[0069] In a more specific embodiment, after obtaining the first judgment result and recording the corresponding judgment time point, the method further includes: sending a closing instruction to the fifth control valve.

[0070] In order to avoid the backflow and reflux of resin in the pipeline due to gravity, thereby affecting the amount of resin in the resin metering tank, a closing command can be sent to the fifth control valve after obtaining the first judgment result. By closing the fifth control valve, the accuracy of re-judgment of whether the input signal is a trigger signal and whether the sensing signal is not less than the height threshold can be further improved, that is, the accuracy of the second judgment result can be improved.

[0071] In a more specific embodiment, after step S105, the following steps are also included: if the dehydration operation condition is not met, return to execute the step of sending an opening instruction to the fifth control valve to transfer the resin to the resin metering tank through the auxiliary transfer pipeline.

[0072] If it is determined that the dehydration operation conditions are not met, the fifth control valve can be controlled to open, thereby replenishing the input resin into the resin metering tank, and repeating the above steps of determining whether the dehydration operation conditions are met.

[0073] S106: If the dehydration operation conditions are met, an opening instruction is sent to the seventh control valve and the dehydration pump is controlled to run for a preset dehydration time and then stop.

[0074] If the dehydration operation condition is met, an opening instruction is sent to the seventh control valve and the dehydration pump is controlled to stop after running for a preset dehydration time. If the dehydration operation condition is met, an opening instruction can be sent to the seventh control valve, and then the seventh control valve is turned on, and an opening instruction is further sent to the dehydration pump, and the dehydration pump runs for a preset dehydration time T1 and then sends a closing instruction to the dehydration pump.

[0075] S107, determining whether the trigger signals of the first resin liquid level switch and the second resin liquid level switch are not received, and obtaining a trigger determination result of whether both are not triggered.

[0076] Determine whether the trigger signals of the first resin liquid level switch and the second resin liquid level switch are not received, and obtain a trigger judgment result of whether they are not triggered. Determine whether the first resin liquid level switch and the second resin liquid level switch have not sent a trigger signal to the controller, that is, determine whether the first resin liquid level switch and the second resin liquid level switch are not triggered, and obtain a corresponding trigger judgment result.

[0077] S108: If the trigger judgment result is that none of the triggers are triggered, send an opening instruction to the fifth control valve to transfer the resin to the resin metering tank through the auxiliary transfer pipeline.

[0078] If the trigger judgment result is that none of them are triggered, an opening instruction is sent to the fifth control valve to transfer the resin to the resin metering tank through the auxiliary transmission pipeline. If the trigger judgment result is that none of them are triggered, an opening instruction is sent to the fifth control valve to transfer the resin to the resin metering tank again through the auxiliary transmission pipeline.

[0079] S109: If a trigger signal from the first resin liquid level switch or a trigger signal from the second resin liquid level switch is received, a closing command is sent to the fifth control valve and water is injected into the resin metering tank through a water injection pipeline.

[0080] If a trigger signal of the first resin liquid level switch or a trigger signal of the second resin liquid level switch is received, a closing command is sent to the fifth control valve and water is injected into the resin metering tank through the water injection pipeline. If a trigger signal of any of the first resin liquid level switch and the second resin liquid level switch is received, a closing command is sent to the fifth control valve, and water is injected into the resin metering tank through the water injection pipeline, and subsequent resin dehydration and metering processing are performed.

[0081] S110: If the trigger judgment result is triggered, water is injected into the resin metering tank through a water injection pipeline.

[0082] If the trigger judgment result is triggered, water is injected into the resin metering tank through the water injection pipeline. If the trigger judgment result is triggered, it means that the controller has at least received the trigger signal of the first resin liquid level switch or at least received the trigger signal of the second resin liquid level switch. At this time, water can be directly injected into the resin metering tank through the water injection pipeline, and subsequent resin dehydration and metering processing can be performed.

[0083] In a more specific embodiment, a water injection pump is provided on the water injection pipeline, the output port of the water injection pipeline is connected to the upstream pipeline of the sixth control valve in the resin delivery pipeline, and the water injection pump is communicatively connected to the controller; step S110 specifically includes: sending a water injection instruction to the water injection pump to inject water through the water injection pump and flush the resin in the resin delivery pipeline.

[0084] Specifically, the controller can send a water injection command to the water injection pump, and the water injection pump starts and flushes the resin in the resin delivery pipeline. Compared with the traditional pipeline design, the method of screw pump transmission of resin is replaced by resin gravity combing and SED water flushing, thereby avoiding the problem of resin damage and clogging of the filter due to the squeeze of the resin by the pump cavity of the screw pump during the resin transmission process. The adjustment of the control process here does not require the replacement of the filter in the resin metering tank, does not require on-site physical modification, has a short cycle, and the later operation will not increase the plant dose due to radiation resin fragments, which improves the reliability of the resin transmission process.

[0085] The resin transmission and metering method for cement solidification of resin waste in nuclear power plants disclosed in the above embodiments controls the resin transmission control valve and the water transmission control valve to be opened alternately, thereby adjusting the specific gravity of resin and water in the resin transmitted in the pipeline, so that the transmission of the resin in the pipeline is more stable; the resin liquid level switch is improved to a tuning fork material switch, and the process control flow of the resin metering operation is modified, and the input signal of the second resin liquid level switch and the sensing signal of the height sensor are used to determine whether to start the resin dehydration process, so as to output a sufficient amount of resin to the resin metering tank for dehydration treatment; the resin transmission method is modified, and the resin gravity combing and water injection pipeline flushing methods are used to avoid the screw pump from squeezing the resin, which may cause the resin to be damaged and the filter to be blocked, thereby improving the reliability of resin transmission and metering.

[0086] The embodiment of the present invention also provides a resin transmission metering device for resin waste cement solidification in nuclear power plants. The resin transmission metering device for resin waste cement solidification in nuclear power plants can be configured in a controller. The controller 10 is connected to a sixth control valve VS6 provided in a resin transmission pipeline 2 for communication. One end of the resin transmission pipeline 2 is connected to a resin metering tank 3, and the other end is connected to a resin output pipeline and a water output pipeline of at least one resin temporary storage tank 4 at the same time. The controller 10 is also connected to a resin transmission control valve VS1 provided on the resin output pipeline and a water transmission control valve VS2 provided on the water output pipeline. One end of an auxiliary transmission pipeline 5 is connected to the resin metering tank 3, and the other end is connected to the resin output pipeline 2. The pipeline in the delivery pipeline 2 located upstream of the sixth control valve VS6, the fifth control valve VS5 on the auxiliary transmission pipeline 5 is connected to the controller 10 for communication; the controller 10 is also connected to the first resin level switch 31, the second resin level switch 32 and the height sensor 33 provided in the resin metering tank 3 for communication, the resin metering tank 3 is also connected to the concentrate metering tank 7 through the dehydration pipeline 6, the seventh control valve VS7 and the dehydration pump PO2 provided on the dehydration pipeline 6 are both connected to the controller 10 for communication, the resin transmission metering device for nuclear power plant resin waste cement solidification is used to execute any embodiment of the aforementioned resin transmission metering method for nuclear power plant resin waste cement solidification. Specifically, please refer to Figure 3 , Figure 3 A schematic block diagram of a resin transmission and metering device for cement solidification of resin waste in a nuclear power plant provided by an embodiment of the present invention.

[0087] like Figure 3 As shown, the resin transmission metering device 100 for cement solidification of resin waste in nuclear power plants includes a first instruction sending unit 101, a second instruction sending unit 102, a first judgment unit 103, a third instruction sending unit 104, a second judgment unit 105, a fourth instruction sending unit 106, a third judgment unit 107, a fifth instruction sending unit 108, a sixth instruction sending unit 109 and a water injection control unit 110.

[0088] The first instruction sending unit 101 is used to send an opening instruction to the sixth control valve if a resin loosening instruction is received; the second instruction sending unit 102 is used to send corresponding control instructions to the resin transfer control valve and the water transfer control valve respectively according to a preset alternating control strategy to control the resin transfer control valve and the water transfer control valve to be alternately opened; the first judgment unit 103 is used to judge whether a trigger signal of the first resin liquid level switch is received; the third instruction sending unit 104 is used to send a closing instruction to the sixth control valve and an opening instruction to the fifth control valve if a trigger signal is received to transfer the resin to the resin metering tank through the auxiliary transmission pipeline; the second judgment unit 105 is used to judge whether the input signal of the second resin liquid level switch and the sensing signal of the height sensor meet the preset dehydration operation conditions; the fourth instruction sending unit 106 is used to If the dehydration operation conditions are met, an opening instruction is sent to the seventh control valve and the dehydration pump is controlled to run for a preset dehydration time and then stop; a third judgment unit 107 is used to judge whether the trigger signals of the first resin liquid level switch and the second resin liquid level switch are not received, and obtain a trigger judgment result of whether both are not triggered; a fifth instruction sending unit 108 is used to send an opening instruction to the fifth control valve if the trigger judgment result is that neither is triggered, so as to transfer the resin to the resin metering tank through the auxiliary transmission pipeline; a sixth instruction sending unit 109 is used to send a closing instruction to the fifth control valve and inject water into the resin metering tank through the water injection pipeline if the trigger signal of the first resin liquid level switch is received or the trigger signal of the second resin liquid level switch is received; a water injection control unit 110 is used to inject water into the resin metering tank through the water injection pipeline if the trigger judgment result is triggered.

[0089] The resin transmission and metering device for cement solidification of resin waste in nuclear power plants provided in an embodiment of the present invention applies the above-mentioned resin transmission and metering method for cement solidification of resin waste in nuclear power plants. The resin transmission and metering method adjusts the specific gravity of resin and water in the resin transmitted in the pipeline by controlling the resin transmission control valve and the water transmission control valve to be opened alternately, so as to make the transmission of the resin in the pipeline more stable; improves the resin liquid level switch to a tuning fork material switch, and modifies the process control flow of the resin metering operation, and determines whether to start the resin dehydration process through the input signal of the second resin liquid level switch and the sensing signal of the height sensor, so as to output a sufficient amount of resin to the resin metering tank for dehydration treatment; modifies the resin transmission method, and utilizes the resin gravity combing and water injection pipeline flushing method to avoid the screw pump from squeezing the resin, resulting in resin damage and clogging the filter screen, thereby improving the reliability of resin transmission and metering.

[0090] The present application also discloses a resin transmission metering device for cement solidification of resin waste in nuclear power plants, wherein, Figure 4 and Figure 5 As shown, the resin transmission metering device includes a controller 10, a resin metering tank 3, a concentrate metering tank 7 and at least one resin temporary storage tank 4; the controller 10 is connected to the sixth control valve VS6 provided in the resin transmission pipeline 2 for communication, one end of the resin transmission pipeline 2 is connected to the resin metering tank 3, and the other end is connected to the resin output pipeline and the water output pipeline of at least one resin temporary storage tank 4 at the same time, the controller 10 is also connected to the resin transmission control valve VS1 provided on the resin output pipeline and the water transmission control valve VS2 provided on the water output pipeline, one end of the auxiliary transmission pipeline 5 is connected to the resin metering tank 3, and the other end is connected to the resin transmission pipeline 2 located at the sixth control valve VS 6 upstream pipeline, the fifth control valve VS5 on the auxiliary transmission pipeline 5 is communicatively connected with the controller 10; the controller 10 is also communicatively connected with the first resin liquid level switch 31, the second resin liquid level switch 32 and the height sensor 33 provided in the resin metering tank 3, the resin metering tank 3 is also connected with the concentrate metering tank 7 through the dehydration pipeline 6, and the seventh control valve VS7 and the dehydration pump PO2 provided on the dehydration pipeline 6 are both communicatively connected with the controller 10; the first resin liquid level switch 31 and the second resin liquid level switch 32 are both tuning fork material switches, and the setting height of the second resin liquid level switch 32 can be set to be higher than the setting height of the first resin liquid level switch 31.

[0091] In order to avoid the problem of resin liquid level switch triggering error, the first resin liquid level switch 31 and the second resin liquid level switch 32 are both tuning fork material switches. The characteristic of the tuning fork material switch is that only solid resin can generate a trigger signal, and liquid water cannot trigger the tuning fork material switch. This setting is used in conjunction with steps S103-S105 in the above method to effectively avoid the problem of the resin liquid level switch triggering error and the process flow causing the operation process to fall into an endless loop and the subsequent waste resin solidification metering steps to be unable to be executed.

[0092] The above-mentioned resin transmission metering device for resin waste cement solidification of nuclear power plants can be implemented in the form of a computer program, and the above-mentioned controller can be implemented in the form of a computer device, and the computer program can be run on the computer device. The controller includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; the memory is used to store the computer program; the processor is used to implement the resin transmission metering method for resin waste cement solidification of nuclear power plants as described in the above embodiment when executing the program stored in the memory.

[0093] See also Figure 7 , Figure 7is a schematic block diagram of a computer device provided by an embodiment of the present invention. The computer device may be a processor for executing a resin transmission metering method for cement solidification of resin waste in a nuclear power plant to control various components.

[0094] See also Figure 7 The computer device 500 includes a processor 502 , a memory and a communication interface 505 connected via a communication bus 501 , wherein the memory may include a storage medium 503 and an internal memory 504 .

[0095] The storage medium 503 can store an operating system 5031 and a computer program 5032. When the computer program 5032 is executed, the processor 502 can execute a resin transmission metering method for cement solidification of resin waste in nuclear power plants, wherein the storage medium 503 can be a volatile storage medium or a non-volatile storage medium.

[0096] The processor 502 is used to provide computing and control capabilities to support the operation of the entire computer device 500 .

[0097] The internal memory 504 provides an environment for the operation of the computer program 5032 in the storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can execute a resin transmission metering method for cement solidification of resin waste in nuclear power plants.

[0098] The communication interface 505 is used for network communication, such as providing data information transmission, etc. Those skilled in the art will appreciate that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation on the computer device 500 to which the solution of the present invention is applied. The specific computer device 500 may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0099] The processor 502 is used to run the computer program 5032 stored in the memory to implement the corresponding functions in the above-mentioned resin transmission metering method for cement solidification of resin waste in nuclear power plants.

[0100] Those skilled in the art will understand that Figure 7 The embodiments of the computer device shown in the figure do not constitute a limitation on the specific composition of the computer device. In other embodiments, the computer device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. For example, in some embodiments, the computer device may only include a memory and a processor. In such embodiments, the structure and function of the memory and the processor are the same as those of the embodiment of the present invention. Figure 7 The embodiments shown are consistent and will not be described again here.

[0101] It should be understood that in the embodiment of the present invention, the processor 502 may be a central processing unit (CPU), and the processor 502 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0102] In a more specific embodiment, a connecting pipe 8 communicating with the inner cavity of the resin metering tank 3 is provided on the top cover of the resin metering tank 3, and the first resin liquid level switch 31 and the second resin liquid level switch 32 are both mounted on the top of a corresponding one of the connecting pipes 8. Specifically, the pipeline between the dehydration pump PO2 and the seventh control valve VS7 in the dehydration pipeline 6 is connected to the delivery pipeline; the other end of the delivery pipeline is connected to a port of the concentrated liquid metering tank 7 through the eighth control valve VS8; the dehydration pipeline 6 is also provided with a ninth control valve VS9 downstream of the dehydration pump PO2, and the pipeline between the dehydration pump PO2 and the ninth control valve VS9 is connected to the resin metering tank 3 through a circulation pipeline, and the circulation pipeline is provided with a tenth control valve VS10 and a second flowmeter L2; the pipeline between the ninth control valve VS9 and the concentrated liquid metering tank 7 is also connected to each of the resin temporary storage tanks 4 through a reflux pipeline, and the reflux control valve VS0 is provided on the reflux pipeline.

[0103] The effective volume of the resin metering tank was tested using SED water, and it was found that the average effective volume of the resin metering tank was 132 L, which was less than the designed effective volume of 135 L. The specific test results are shown in Table 1.

[0104] Table 1

[0105]

[0106]

[0107] From the above table, we can know that the actual measured volume of the resin metering tank 3 is 132L, which is 3L away from the design requirement of effective volume 135L. Since the resin liquid level switch trigger is used as the stop condition in this application, when the actual liquid surface in the tank body contacts the level gauge point, the metering stops, and the liquid level volume at this time is used as the effective volume of the tank body; this metering method results in that part of the space in the tank body is not actually filled with resin. To solve this problem, the technical method of this application is provided with a connecting pipe 8 on the top cover of the resin metering tank 3, and the first resin liquid level switch 31 and the second resin liquid level switch 32 are both assembled and arranged at the top of a corresponding connecting pipe 8. The specific structure is as follows Figure 6 As shown, Y1 is the effective volume liquid level defined by the supplier, Y2 is the target liquid cross section after the first resin liquid level switch is raised, and Y3 is the effective volume liquid level defined by the design institute; H2 is the connecting pipe height (H2 is 160mm in the specific embodiment of the present application); H3 is the original trigger height of the first resin liquid level switch (H3 is 210mm in the specific embodiment of the present application); H4 is the trigger height of the first resin liquid level switch after adjustment (H4 is 170mm in the specific embodiment of the present application). The resin liquid level switch is raised by the connecting pipe 8, and the trigger value of the resin liquid level switch is adjusted upward so that its trigger point is close to the connecting pipe 8. The updated design here does not require the replacement of the resin metering tank 3, but only requires the addition of the connecting pipe 8 and a certain thickness of the raised flange, which is low in cost and short in construction period.

[0108] In a more specific embodiment, the output port of the auxiliary water inlet pipeline is connected to the resin metering tank 3, and a first flow meter L1 is provided on the auxiliary water inlet pipeline, and the first flow meter L1 is connected in communication with the controller 10. One end of the sampling pipeline is connected to the upstream pipeline of the sixth control valve VS6 in the resin delivery pipeline 2, and the other end is connected to the resin temporary storage tank 4; the sampling control valve VSQ and the sampler QS provided in the sampling pipeline are both connected in communication with the controller 10.

[0109] In another embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium may be a volatile or non-volatile computer-readable storage medium. The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the steps included in the above-mentioned resin transfer metering method for cement solidification of resin waste in nuclear power plants are implemented.

[0110] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the above-described equipment, devices and units can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. Those of ordinary skill in the art can appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, computer software or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0111] In the several embodiments provided by the present invention, it should be understood that the disclosed equipment, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. Units with the same function may also be combined into one unit. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices or units, or may be an electrical, mechanical or other form of connection.

[0112] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present invention.

[0113] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0114] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a computer-readable storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned computer-readable storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a magnetic disk or an optical disk.

[0115] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A resin transmission metering method for cement solidification of resin waste in nuclear power plants, the resin transmission metering method is applied to a controller, the controller is connected to a sixth control valve arranged in a resin transmission pipeline, one end of the resin transmission pipeline is connected to a resin metering tank, and the other end is connected to a resin output pipeline and a water output pipeline of at least one resin temporary storage tank at the same time, the controller is also connected to a resin transmission control valve arranged on the resin output pipeline and a water transmission control valve arranged on the water output pipeline, one end of an auxiliary transmission pipeline is connected to the resin metering tank, and the other end is connected to a pipeline in the resin transmission pipeline located upstream of the sixth control valve, the fifth control valve on the auxiliary transmission pipeline is connected to the controller; the controller is also connected to a first resin liquid level switch, a second resin liquid level switch and a height sensor arranged in the resin metering tank, the resin metering tank is also connected to a concentrated liquid metering tank through a dehydration pipeline, the seventh control valve and a dehydration pump arranged on the dehydration pipeline are both connected to the controller, characterized in that, The resin transfer metering method comprises: If a resin loosening instruction is received, an opening instruction is sent to the sixth control valve; Sending corresponding control instructions to the resin transmission control valve and the water transmission control valve respectively according to a preset alternating control strategy to control the resin transmission control valve and the water transmission control valve to be opened alternately; determining whether a trigger signal of the first resin liquid level switch is received; If a trigger signal is received, a closing command is sent to the sixth control valve and an opening command is sent to the fifth control valve at the same time, so as to transfer the resin to the resin metering tank through the auxiliary transfer pipeline; Determining whether the input signal of the second resin liquid level switch and the sensing signal of the height sensor meet the preset dehydration operation conditions; If the dehydration operation condition is met, an opening instruction is sent to the seventh control valve and the dehydration pump is controlled to run for a preset dehydration time and then stop; Determine whether the trigger signals of the first resin liquid level switch and the second resin liquid level switch are not received, and obtain a trigger determination result of whether both are not triggered; If the trigger judgment result is that none of the triggers are triggered, sending an opening instruction to the fifth control valve to transfer the resin to the resin metering tank through the auxiliary transfer pipeline; If a trigger signal of the first resin liquid level switch or a trigger signal of the second resin liquid level switch is received, a closing command is sent to the fifth control valve and water is injected into the resin metering tank through the water injection pipeline; If the trigger judgment result is triggered, water is injected into the resin metering tank through a water injection pipeline.

2. The resin transmission metering method for cement solidification of resin waste in nuclear power plants according to claim 1, characterized in that: The step of sending corresponding control instructions to the resin transmission control valve and the water transmission control valve respectively according to a preset alternating control strategy to control the resin transmission control valve and the water transmission control valve to be opened alternately comprises: Determine the sending interval of the on control instruction and the off control instruction according to the duty cycle and cycle duration in the alternating control strategy; The opening control instruction and the closing control instruction are periodically sent to the resin transmission control valve and the water transmission control valve according to the sending interval time.

3. The resin transmission metering method for cement solidification of resin waste in nuclear power plants according to claim 2, characterized in that: The step of periodically sending the opening control instruction and the closing control instruction to the resin transmission control valve and the water transmission control valve according to the transmission interval time includes: Sending an opening control instruction to the resin transmission control valve and simultaneously sending a closing control instruction to the water transmission control valve and recording a corresponding first sending time; If the time point of the sending interval time different from the first sending interval is reached, a closing control instruction is sent to the resin transmission control valve and an opening control instruction is sent to the water transmission control valve at the same time, and the corresponding second sending time is recorded; If the time point of the sending interval time different from the second sending interval is reached, return to the step of sending the opening control instruction to the resin transfer control valve and the closing control instruction to the water transfer control valve at the same time and record the corresponding first sending time.

4. The resin transmission metering method for cement solidification of resin waste in nuclear power plants according to claim 2 or 3, characterized in that: The duty cycle is 1:

1.

5. The resin transmission metering method for cement solidification of resin waste in nuclear power plants according to claim 1, characterized in that: The determining whether the input signal of the second resin liquid level switch and the sensing signal of the height sensor meet the preset dehydration operation conditions includes: Determine whether the input signal is a trigger signal and whether the sensing signal is not less than the height threshold set in the dehydration operation condition, obtain a first determination result and record a corresponding determination time point; Determine whether a delay time point has been reached, the delay time point being a time point that is separated from the determination time point by a preset time length in the dehydration operation condition; If the delay time point is reached, determining again whether the input signal is a trigger signal and determining whether the sensing signal is not less than the height threshold, to obtain a second determination result; If the first judgment result and the second judgment result are both yes, it is determined that the dehydration operation condition is met; If the second judgment result is no, it is determined that the dehydration operation condition is not met.

6. The resin transmission metering method for cement solidification of resin waste in nuclear power plants according to claim 5, characterized in that: After obtaining the first judgment result and recording the corresponding judgment time point, the method further includes: A closing command is sent to the fifth control valve.

7. The resin transmission metering method for cement solidification of resin waste in nuclear power plants according to claim 5 or 6, characterized in that: After determining whether the input signal of the second resin liquid level switch and the sensing signal of the height sensor meet the preset dehydration operation conditions, the method further includes: If the dehydration operation condition is not met, the process returns to the step of sending an opening instruction to the fifth control valve to transfer the resin to the resin metering tank through the auxiliary transfer pipeline.

8. The resin transmission metering method for cement solidification of resin waste in nuclear power plants according to claim 1, characterized in that: The water injection pipeline is provided with a water injection pump, the output port of the water injection pipeline is connected to the upstream pipeline of the sixth control valve in the resin delivery pipeline, and the water injection pump is in communication connection with the controller; the water injection into the resin metering tank through the water injection pipeline includes: A water injection instruction is sent to the water injection pump so that water is injected through the water injection pump to flush the resin in the resin delivery pipeline.

9. A resin transmission metering device for cement solidification of resin waste in nuclear power plants, characterized in that: The controller in the resin transmission metering device is used to execute the resin transmission metering method for cement solidification of resin waste in nuclear power plants according to any one of claims 1 to 8, and the resin transmission metering device comprises: a first instruction sending unit, configured to send an opening instruction to the sixth control valve upon receiving a resin loosening instruction; A second instruction sending unit, used for sending corresponding control instructions to the resin transmission control valve and the water transmission control valve respectively according to a preset alternating control strategy, so as to control the resin transmission control valve and the water transmission control valve to be opened alternately; A first judging unit, used to judge whether a trigger signal of the first resin liquid level switch is received; a third instruction sending unit, configured to send a closing instruction to the sixth control valve and an opening instruction to the fifth control valve upon receiving a trigger signal, so as to transfer the resin to the resin metering tank through the auxiliary transfer pipeline; A second judging unit, used for judging whether the input signal of the second resin liquid level switch and the sensing signal of the height sensor meet the preset dehydration operation conditions; A fourth instruction sending unit, configured to send an opening instruction to the seventh control valve and control the dehydration pump to stop after running for a preset dehydration time if the dehydration operation condition is met; A third judgment unit is used to judge whether the trigger signals of the first resin liquid level switch and the second resin liquid level switch are not received, and obtain a trigger judgment result of whether the trigger signals are not triggered; a fifth instruction sending unit, configured to send an opening instruction to the fifth control valve if the trigger judgment result is that none of the triggers are triggered, so as to transfer the resin to the resin metering tank through the auxiliary transfer pipeline; a sixth instruction sending unit, configured to send a closing instruction to the fifth control valve and inject water into the resin metering tank through a water injection pipeline if receiving a trigger signal from the first resin liquid level switch or receiving a trigger signal from the second resin liquid level switch; A water injection control unit is used to inject water into the resin metering tank through a water injection pipeline if the trigger judgment result is triggered.

10. A resin transmission metering device for cement solidification of resin waste in nuclear power plants, characterized in that: The resin transmission metering device includes a controller, a resin metering tank, a concentrate metering tank and at least one resin temporary storage tank; The controller is connected in communication with the sixth control valve provided in the resin delivery pipeline. One end of the resin delivery pipeline is connected to the resin metering tank, and the other end is connected to the resin output pipeline and the water output pipeline of at least one resin temporary storage tank at the same time. The controller is also connected in communication with the resin transmission control valve provided on the resin output pipeline and the water transmission control valve provided on the water output pipeline. One end of the auxiliary transmission pipeline is connected to the resin metering tank, and the other end is connected to the pipeline in the resin delivery pipeline located upstream of the sixth control valve. The fifth control valve on the auxiliary transmission pipeline is connected in communication with the controller. The controller is also connected in communication with the first resin liquid level switch, the second resin liquid level switch and the height sensor provided in the resin metering tank. The resin metering tank is also connected to the concentrated liquid metering tank through the dehydration pipeline. The seventh control valve and the dehydration pump provided on the dehydration pipeline are both connected in communication with the controller. The first resin liquid level switch and the second resin liquid level switch are both tuning fork type material switches; The controller includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory, used to store computer programs; The processor is used to implement the resin transmission metering method for cement solidification of resin waste in nuclear power plants as described in any one of claims 1 to 8 when executing the program stored in the memory.

11. The resin transmission metering equipment for cement solidification of resin waste in nuclear power plants according to claim 10, characterized in that: A connecting pipe communicating with the inner cavity of the resin metering tank is disposed on the top cover of the resin metering tank, and the first resin liquid level switch and the second resin liquid level switch are both mounted on the top end of a corresponding one of the connecting pipes.

12. The resin transmission metering equipment for cement solidification of resin waste in nuclear power plants according to claim 10, characterized in that: The pipeline between the dehydration pump and the seventh control valve in the dehydration pipeline is connected to the delivery pipeline; the other end of the delivery pipeline is connected to a port of the concentrate metering tank through the eighth control valve; A ninth control valve is also provided in the dehydration pipeline downstream of the dehydration pump, and the pipeline between the dehydration pump and the ninth control valve is connected to the resin metering tank through a circulation pipeline, and a tenth control valve and a second flow meter are provided on the circulation pipeline; The pipeline between the ninth control valve and the concentrated liquid metering tank is also connected to each of the resin temporary storage tanks through a reflux pipeline, and a reflux control valve is provided on the reflux pipeline.

13. The resin transmission metering equipment for cement solidification of resin waste in nuclear power plants according to claim 12, characterized in that: The output port of the auxiliary water inlet pipeline is connected to the resin metering tank. The auxiliary water inlet pipeline is provided with a first flow meter, and the first flow meter is communicatively connected to the controller.

14. The resin transmission metering equipment for cement solidification of resin waste in nuclear power plants according to claim 13, characterized in that: One end of the sampling pipeline is connected to the upstream pipeline of the sixth control valve in the resin delivery pipeline, and the other end is connected to the resin temporary storage tank; the sampling control valve and the sampler arranged in the sampling pipeline are both connected to the controller for communication.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the resin transfer metering method for cement solidification of resin waste in nuclear power plants as described in any one of claims 1 to 8 are implemented.

Images