CN111308536A - Nuclear material metering system and method - Google Patents
Nuclear material metering system and method Download PDFInfo
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- CN111308536A CN111308536A CN202010149150.4A CN202010149150A CN111308536A CN 111308536 A CN111308536 A CN 111308536A CN 202010149150 A CN202010149150 A CN 202010149150A CN 111308536 A CN111308536 A CN 111308536A
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Abstract
The application provides a nuclear material metering system and a method, and the system comprises: a plurality of containers to be measured, the plurality of containers to be measured including a first container and a second container; the first container is used for containing a nuclear material sample to be measured, and the second container is used for containing a blank sample; the temperature control devices are used for keeping temperature stable and comprise a first temperature control device and a second temperature control device, the first temperature control device is sleeved outside the first container, and the second temperature control device is sleeved outside the second container; at least one measuring device for metering a nuclear material sample, the measuring device being adapted to measure the temperature of the first and second containers. The embodiment of the application improves the precision of measuring the content of the nuclear material sample by ensuring that different containers to be measured have constant temperature boundaries with the same temperature.
Description
Technical Field
The application relates to the field of radioactive substance measurement, in particular to a nuclear material metering system and a nuclear material metering method.
Background
The nuclear material is used for fission reactors and fusion reactors, and the nuclear material with radioactivity has an irreplaceable important role in the fields of military affairs, energy, medical treatment, scientific research and the like due to the radioactivity of the nuclear material. Many nuclear materials are of high value and are also highly hazardous. Therefore, accurate metering of the content of the nuclear material is an essential prerequisite for the application of the nuclear material.
In the prior art, a heat flow sensor is generally adopted by a nuclear material metering device to meter a sample, but the problem of inaccurate nuclear material metering is caused by improper control of a constant temperature boundary of the sample.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a nuclear material metering system and method, so as to solve the problem of inaccurate metering of the conventional nuclear material metering device.
In a first aspect, an embodiment of the present invention provides a nuclear material metering system, including: a plurality of containers to be measured including a first container and a second container; the first container is used for containing a nuclear material sample to be measured, and the second container is used for containing a blank sample; the temperature control devices are used for keeping the temperature stable and comprise a first temperature control device and a second temperature control device, the first temperature control device is sleeved outside the first container, and the second temperature control device is sleeved outside the second container; the measuring device is connected with the first container and the second container respectively and used for measuring the temperature of the first container and the second container and calculating the content of the nuclear material sample according to the measured temperature; wherein the temperature of the first temperature control device and the temperature of the second temperature control device are set to be the same when the nuclear material metering system meters the nuclear material sample.
The embodiment of the application ensures that different containers to be measured have constant temperature boundaries with the same temperature and improves the precision of measuring the content of the nuclear material sample by respectively arranging the containers to be measured, which are respectively filled with the nuclear material sample and the blank sample, in a plurality of temperature controllers with the same temperature.
In an alternative embodiment, the temperature control device comprises a water bath pipe maintaining a stable temperature, which is wrapped outside the container to be measured.
This application embodiment is through setting up the water bath pipeline in temperature control device for at the in-process of measuring nuclear material sample, the rivers of constant temperature can flow through the water bath pipeline, guarantees temperature control device's temperature stability with this.
In an alternative embodiment, the first temperature control device comprises a first water bath conduit and the second temperature control device comprises a second water bath conduit; the first water bath pipeline wrapped outside the first container is connected with the second water bath pipeline wrapped outside the second container.
The water bath pipeline that this application embodiment corresponds first temperature control device and the water bath pipeline of second temperature control device are connected for the temperature that first temperature control device and second temperature control device maintain is the same, so that follow-up nuclear material sample is measured.
In an optional embodiment, the temperature control device further comprises a housing, the housing is sleeved outside the water bath pipeline, and a vacuum area is formed between the housing and the water bath pipeline.
This application embodiment reduces the influence of ambient temperature to the water bath pipeline through set up the vacuum region in the water bath pipeline skin, improves the precision of measuring the content of nuclear material sample.
In an alternative embodiment, the temperature control device further comprises a hot inert body disposed between the water bath conduit and the container to be measured.
According to the embodiment of the application, the thermal inertia body is arranged in the temperature control device, so that the influence of the external temperature on the temperature of the nuclear material sample is reduced, and the metering precision of the nuclear material sample is improved.
In an alternative embodiment, the nuclear material metering system further comprises: the water bath thermostat is provided with the containers to be measured and is used for keeping the environmental temperatures of the containers to be measured the same.
The embodiment of the application reduces the influence of the environment temperature on the measurement of the nuclear material sample by placing the container to be measured in the water bath thermostat, and improves the measurement precision.
In an optional embodiment, the measuring device includes a measuring part and a thermistor wrapped outside the container to be measured, the measuring part is connected to the thermistor, the measuring part is used for measuring a resistance value of the thermistor, and the resistance value of the thermistor is used for representing a temperature of the corresponding container to be measured.
According to the embodiment of the application, the resistance value of the thermistor arranged outside the container to be measured is measured, so that the change condition of the temperature of the container to be measured can be represented more simply and rapidly, and the content of the nuclear material sample can be determined subsequently.
In a second aspect, an embodiment of the present invention provides a nuclear material metering method, including: setting a first temperature control device and a second temperature control device in a nuclear material metering system to the same temperature; wherein the first temperature control device is used for keeping the temperature of a first container stable, the second temperature control device is used for keeping the temperature of a second container stable, the first container is used for containing a nuclear material sample to be measured, and the second container is used for containing a blank sample; measuring a first resistance value and a second resistance value, wherein the first resistance value is used for representing the temperature of the first container when the first container contains a nuclear material sample, and the second resistance value is used for representing the temperature of the second container when the first container contains the nuclear material sample; calculating the thermal power of the nuclear material sample according to a first resistance value and a second resistance value based on a preset measurement sensitivity, the first initial resistance value and the second initial resistance value; the preset measurement sensitivity is used for representing the relation between a resistance difference value and thermal power in the nuclear material metering system, the first initial resistance value is used for representing the temperature of a third container when the third container contains a preset electric simulation body in a non-working state, the second initial resistance value is used for representing the temperature of a second container when the third container does not contain the preset electric simulation body, and the third container is used for containing the preset electric simulation body; and determining the content of the nuclear material sample according to the thermal power of the nuclear material sample.
According to the embodiment of the application, the first temperature control device and the second temperature control device are set to be at the same temperature, and the corresponding resistance values of the first container and the second container are utilized to measure the content of the nuclear material sample. Thus, the accuracy of measuring the content of the nuclear material sample is improved by ensuring that different containers to be measured have constant temperature boundaries with the same temperature.
In an optional embodiment, the calculating the thermal power of the nuclear material sample according to the first resistance value and the second resistance value based on the preset measurement sensitivity, the first initial resistance value and the second initial resistance value includes: based on preset measurement sensitivity, a first initial resistance value and a second initial resistance value, calculating the first resistance value and the second resistance value by using a pre-established power calculation model to obtain the thermal power of the nuclear material sample; the power calculation model is as follows:
P＝[(R1-R2)-(Ro1-Ro2)]S
wherein P is the thermal power of the nuclear material sample; r1Is the first resistance value; r2Is the second resistance value; ro1The first initial resistance value; ro2The second initial resistance value; and S is the preset measurement sensitivity.
According to the embodiment of the application, the first resistance value and the second resistance value obtained by measurement are calculated through the pre-established power calculation model and the pre-measured preset measurement sensitivity, the first initial resistance value and the second initial resistance value, so that the thermal power of the nuclear material sample is quickly determined, and the content of the nuclear material sample is conveniently and efficiently and quickly determined in the subsequent process.
In an optional embodiment, before the calculating the thermal power of the nuclear material sample according to the first resistance value and the second resistance value based on the preset measurement sensitivity, the first initial resistance value and the second initial resistance value, the method further comprises: measuring to obtain a third resistance value and a fourth resistance value; the third resistance value is used for representing the temperature of the third container when the third container contains a preset electric simulator in a working state, and the fourth resistance value is used for representing the temperature of the second container when the third container contains the preset electric simulator; and calculating to obtain the preset measurement sensitivity according to the third resistance value and the fourth resistance value based on a preset thermal power, a first initial resistance value and a second initial resistance value corresponding to a preset electrical simulation body.
According to the embodiment of the application, the resistance value of the electric simulation body is measured in advance, and the measurement sensitivity of the nuclear material metering system can be obtained according to the preset thermal power of the point simulation body, so that the thermal power corresponding to the nuclear material sample can be calculated in the following process, and the content of the nuclear material sample can be determined efficiently and quickly.
In an optional embodiment, the calculating the preset measurement sensitivity based on a preset thermal power, a first initial resistance value and a second initial resistance value corresponding to a preset electrical simulator according to the third resistance value and the fourth resistance value includes: based on preset thermal power, a first initial resistance value and a second initial resistance value corresponding to a preset electrical simulation body, calculating and processing the third resistance value and the fourth resistance value by using a pre-established calibration model to obtain the preset measurement sensitivity; the calibration model is as follows:
wherein S is the preset measurement sensitivity; p0The preset thermal power of the preset electric simulator is set; rp1Is the third resistance value; rp2Is the fourth resistance value; ro1The first initial resistance value; ro2The second initial resistance value.
According to the embodiment of the application, the pre-measured first initial resistance value, the pre-measured second initial resistance value, the pre-measured resistance value of the electric simulator and the pre-set thermal power are processed by utilizing the pre-established calibration model, so that the corresponding measurement sensitivity of the nuclear material metering system can be quickly obtained, and the content of the nuclear material sample can be conveniently and efficiently determined in the subsequent process.
The embodiment of the application arranges the sample group and the comparison group in the temperature controllers with the same structure and temperature, and improves the precision of measuring the nuclear material content by ensuring that the sample group and the comparison group have constant temperature boundaries with the same temperature.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic diagram illustrating a principle of metering a high-power heating unit according to an embodiment of the present application;
FIG. 2 is a schematic view of another principle for metering a low-power heating unit according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a nuclear material metering system according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of another nuclear material metering system provided in accordance with an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of another embodiment of a nuclear material metering system;
fig. 6 is a schematic flow chart of a nuclear material metering method according to an embodiment of the present disclosure;
FIG. 7 is a schematic flow chart illustrating another method for metering nuclear material according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a nuclear material metering device according to an embodiment of the present disclosure;
fig. 9 is a block diagram of an electronic device applicable to the embodiment of the present application.
Icon: 100-a nuclear material metering system; 110-a container to be measured; 111-child container; 120-temperature control means; 121-water bath pipeline; 122-a housing; 123-vacuum area; 124-a thermal inert body; 130-a measuring device; 140-water bath thermostat; 200-core material sample.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Fig. 1 is a schematic diagram illustrating a principle of metering a high-power heating element according to an embodiment of the present application, and fig. 2 is a schematic diagram illustrating a principle of metering a low-power heating element according to an embodiment of the present application, where, as shown in fig. 1 and fig. 2, under a condition of a given constant temperature boundary, heat emitted by all heating elements within the boundary flows out of the constant temperature boundary. Therefore, a temperature field which takes the heating element as the center, has the highest central temperature and gradually decreases towards the periphery can be established in the boundary. Meanwhile, the center temperature may vary depending on the heating element. Under the condition of unchanged structure and ideal conditions, the temperature in the temperature field is only related to the heating power of the heating element. Therefore, the thermal power of the heating element can be calculated according to the measured temperature of the preset place, and the quantity of the nuclear material can be calculated according to the thermal power of the heating element.
Fig. 3 is a schematic structural diagram of a nuclear material metering system according to an embodiment of the present application, where the system includes: a plurality of containers to be measured 110, the plurality of containers to be measured 110 including a first container and a second container; wherein the first container is used for containing a nuclear material sample 200 to be measured, and the second container is used for containing a blank sample. A plurality of temperature control devices 120 for keeping temperature stable, a plurality of temperature control devices 120 include first temperature control device and second temperature control device, first temperature control device cover is established outside first container, the second temperature control device cover is established outside the second container. At least one measuring device 130 for metering a nuclear material sample 200, wherein the measuring device 130 is connected with the first container and the second container respectively, and the measuring device 130 is used for measuring the temperature of the first container and the second container and calculating the content of the nuclear material sample 200 according to the measured temperature. Wherein the temperature of the first temperature control device and the temperature of the second temperature control device are set to be the same when the nuclear material metering system 100 meters the nuclear material sample 200.
The nuclear material usually generates heat due to its spontaneous decay, and a certain thermal effect is generated at normal temperature. The thermal effect refers to the heat released or absorbed by the system in the change process at a certain temperature. In an optional implementation process of the present application, the nuclear material sample 200 may be placed in the container 110 to be measured, the temperature of the nuclear material sample 200 may be measured by the measuring device 130, and then the thermal power corresponding to the nuclear material sample 200 may be calculated according to the corresponding relationship between the temperature and the thermal power of the heating element under the constant temperature boundary maintained by the temperature control device 120, and then the content of the nuclear material may be determined according to the thermal power.
It should be noted that, referring to fig. 1 and fig. 2 again, heat is generated from both the low power heating element and the high power heating element, and therefore, the center temperature of the low power heating element is relatively higher than the constant temperature boundary. In order to reduce the influence of the device on the calculation of the corresponding thermal power of the nuclear material during the metering of the nuclear material. The present embodiment places the core material sample 200 as a sample group in the first container and the blank sample as a control group in the second container. The first container and the second container have the same structure, and the measurement process for measuring the temperature of the first container and the second container is the same, so that the influence of the device on the measurement can be eliminated according to the temperature of the first container and the temperature of the second container in the subsequent measurement process.
It should be noted that, since the first container contains the nuclear material sample 200, high heat energy is generated, and if the first container and the second container are placed together in the same temperature control device 120 in order to keep the constant temperature boundary consistent, the temperature of the second container is easily changed due to the temperature change of the first container. Therefore, in an alternative implementation of the present application, by disposing the containers 110 to be measured containing the nuclear material samples 200 and the blank samples in different temperature controllers respectively, the different temperature controllers have the same structure, and the temperature to be maintained is also the same, so that the influence of the nuclear material samples 200 on the blank samples during metering can be reduced while maintaining the constant temperature boundary with the same temperature, so as to obtain the content of the nuclear material samples 200 more accurately.
The nuclear material sample 200 and the blank sample can be respectively placed in different sub-containers 111, the different sub-containers 111 have the same structure, the sub-container 111 corresponding to the nuclear material sample 200 is arranged in the first container, and the sub-container 111 corresponding to the blank sample is arranged in the second container. Therefore, after the metering of one nuclear material sample 200 is completed, the sample to be measured can be quickly replaced, and the metering efficiency is improved. Also, the container to be measured 110 has high heat conductivity, and the influence of the shape position of the heater in the container to be measured 110 can be weakened to some extent.
Meanwhile, nuclear materials are a general name of materials special for nuclear industry and nuclear science research, the nuclear materials can be nuclear fuel, reactor materials and nuclear engineering materials, and specific types of the nuclear materials are not limited and can be adjusted according to actual metering requirements. Moreover, the content of the nuclear material sample 200 obtained by metering may be used to characterize the total weight of the nuclear material sample 200, may also be used to characterize the content or percentage of radioactive substances in the nuclear material sample 200, and may also characterize the amount of the nuclear material of a certain specific power, and the specific type of the content of the nuclear material sample 200 is not limited, and is selected according to the actual measurement mode.
For example, if the power of the nuclear material sample of M (kg) is measured as P (W), then the specific power is obtained as C ═ P/M (W/kg), and the unit of the content of the nuclear material sample obtained by dividing the calorimetric power by the specific power is the mass (kg). If a sample is measured in mol, the content of the sample of the core material is in mol.
Fig. 4 is a schematic structural diagram of another nuclear material metering system provided in the embodiment of the present application, and the temperature control device 120 includes a water bath pipe 121 for maintaining a stable temperature, and the water bath pipe 121 is wrapped outside the container 110 to be measured.
In an alternative embodiment of the present application, in order to maintain a stable constant temperature boundary with respect to the container 110 to be measured, a water bath conduit 121 may be provided in the temperature control device 120 such that the water bath conduit 121 surrounds the outside of the container 110 to be measured. In the process of metering the nuclear material, water flow with large specific heat capacity can be adopted, and the effect of maintaining a stable constant temperature boundary and forming a temperature field is realized by flowing water with constant temperature through the water bath pipeline 121. Wherein a water flow can enter the water bath conduit 121 through the inlet of the water bath conduit 121 and flow around the container to be measured 110 until the water flow exits from the outlet of the water bath conduit 121.
It is worth mentioning that the first temperature control device comprises a first water bath conduit, and the second temperature control device comprises a second water bath conduit; the first water bath pipeline wrapped outside the first container is connected with the second water bath pipeline wrapped outside the second container.
In order to ensure that the temperatures of the constant temperature boundaries corresponding to different containers 110 to be measured are the same, the temperatures of the temperature control devices 120 corresponding to different containers 110 to be measured can be set to be the same, so as to achieve the effect of constant temperature.
In an optional implementation process of the present application, by connecting the water bath pipelines 121 in different temperature control devices 120, during the process of metering the nuclear material, water flow with a constant temperature continuously flows through the plurality of temperature control devices 120, so that the containers 110 to be measured corresponding to different temperature control devices 120 have constant temperature boundaries with the same temperature, so as to measure different temperature fields formed by different containers 110 to be measured, and subsequently, the nuclear material metering can be performed more accurately.
In the process of metering the nuclear material, a liquid with a relatively large specific heat capacity, such as water, a thermostat and the like, may flow through the water bath pipeline 121, and the specific type of the liquid is not limited and may be adjusted according to actual needs.
On the basis of the above embodiment, the temperature control device 120 further includes a housing 122, the housing 122 is sleeved outside the water bath pipe 121, and a vacuum area 123 is formed between the housing 122 and the water bath pipe 121.
In the optional implementation of this application, through set up the vacuum area 123 in the water bath pipeline 121 outside, can reduce the external influence to the temperature of rivers in the water bath pipeline 121, can effectively completely cut off the influence of external environment temperature to inside temperature field, improve measurement accuracy.
On the basis of the above embodiment, the temperature control device 120 further comprises a hot inert body 124, and the hot inert body 124 is arranged between the water bath pipeline 121 and the container 110 to be measured.
In an optional implementation process of the present application, in order to establish a constant temperature boundary with stable temperature, a hot inert body 124 may be disposed between the water bath pipeline 121 and the container 110 to be measured, the hot inert body 124 is sleeved outside the container 110 to be measured of the water bath pipeline 121, and the water bath pipeline 121 is disposed around the hot inert body 124, so that the temperature of the constant temperature boundary is more stable.
Because the material of the thermal inertia body 124 is insensitive to external thermal energy changes, a certain amount of heat is added to the thermal inertia body 124 in a certain time, and the temperature change of the surface of the thermal inertia body 124 is slow, so that the thermal inertia body 124 can reduce the thermal energy loss inside the thermal inertia body 124, the temperature distribution is uniform, and the influence of the external temperature on the inside of the thermal inertia body 124 can be reduced. The material of the heat idle body 124 may be aluminum metal or other metals, and the heat idle body 124 may also be made of composite materials such as vapor chamber and heat pipe. The specific type of the thermal idler 124 is not limited and can be adjusted according to actual metering requirements. When hot inert body 124 is disposed between water bath conduit 121 and container 110 to be measured, hot inert body 124 may further homogenize the constant temperature boundary provided by water bath conduit 121, and may also help water bath conduit 121 maintain temperature stability.
It should be noted that, as an alternative embodiment of the present application, the temperature control device 120 is provided with a vacuum region 123 formed by the heat idle body 124, the water bath pipeline 121 and the outer shell 122 in sequence from inside to outside, and through the ordered cooperation of the heat idle body 124, the water bath pipeline 121 and the vacuum region 123, effective control of temperature is achieved, and a relatively stable constant temperature boundary can be established.
Fig. 5 is a schematic structural diagram of another nuclear material metering system 100 according to an embodiment of the present application, where the nuclear material metering system 100 further includes: a water bath thermostat 140, wherein the plurality of containers 110 to be measured are arranged in the water bath thermostat 140, and the water bath thermostat 140 is used for keeping the environment temperature of the plurality of containers 110 to be measured the same.
In an alternative embodiment of the present application, in order to reduce interference of the external temperature with the metering of the nuclear material, a plurality of containers 110 to be measured and the respective temperature control devices 120 can be placed in the water bath thermostat 140 by providing the water bath thermostat 140. In the process of metering the nuclear materials, the temperature of different containers 110 to be measured can be prevented from being influenced by the constant temperature water in the water bath thermostat 140, which is equivalent to that when the different containers 110 to be measured and the corresponding temperature control devices 120 are divided into a plurality of chambers by using the constant temperature of the water bath, a constant temperature heat source provided by the water bath thermostat 140 can be shared, and the interference of the external temperature to the metering process is reduced.
It is worth mentioning that a plurality of water bath thermostats can be arranged, and the water bath thermostats are connected with each other through a plurality of water pipes, so that all the water bath thermostats keep the temperature consistent. Thus, a plurality of containers to be measured and respective corresponding temperature controllers can be placed in a plurality of water bath thermostats, respectively, for measurement. Furthermore, a container to be measured and a corresponding temperature controller can be placed in a water bath thermostat, and the number of the containers to be measured can be expanded more quickly and efficiently subsequently.
As an implementation manner, in the embodiment of the present application, a plurality of containers to be measured 110 may be arranged to respectively contain different nuclear material samples 200, that is, a plurality of sample sets are set, and then are respectively connected to the plurality of containers to be measured 110 through the measuring device 130. The temperature of the container 110 to be measured containing different nuclear material samples 200 is measured by the measuring device 130, and the corresponding content of the different nuclear material samples 200 can be calculated according to the temperature of the container 110 to be measured containing a blank sample, so as to improve the measuring efficiency.
As another embodiment, in this embodiment of the application, a plurality of containers to be measured 110 may be further disposed to respectively contain blank samples, that is, a plurality of reference groups are set, and then the measuring devices 130 are respectively connected to the plurality of containers to be measured 110, and the temperatures corresponding to the plurality of containers to be measured 110 containing blank samples are obtained through measurement and are used as a plurality of reference temperatures, so that an average value of the plurality of reference temperatures is obtained subsequently, and a more accurate temperature of the reference group is obtained, so that the nuclear material can be more accurately measured subsequently.
On the basis of the above embodiment, the measuring device 130 includes a measuring part and a thermistor wrapped outside the container 110 to be measured, the measuring part is connected to the thermistor, the measuring part is used for measuring the resistance value of the thermistor, and the resistance value of the thermistor is used for representing the temperature of the corresponding container 110 to be measured.
In the optional implementation of this application, because thermistor is comparatively sensitive and advantage such as measure easily to temperature sensing, can be more accurate measure the temperature variation in the volume of awaiting measuring container 110 for thermistor. For each container 110 to be measured, the thread-shaped thermistor can be wound on the container 110 to be measured according to the thread groove by forming the thread groove on the outer wall of the container 110 to be measured, and then the resistance value of the thermistor can be measured in the future by measurement; the temperature of the container 110 to be measured can also be measured by the measuring member by uniformly arranging a plurality of thermistors on the outer wall of the container 110 to be measured.
The thermistor can be made of platinum wires or copper wires or other conductive materials, the specific type of the thermistor is not limited, and the thermistor can be adjusted according to actual metering accuracy. Meanwhile, the measuring part can accurately measure the resistance value of the thermistor, the measuring part can be an ohmmeter or a measurement and control cabinet, and the type of the specific measurement can be adjusted according to actual measurement requirements. The cable of the measuring member can enter the inside of the temperature control device 120 through a measuring line outlet provided at the bottom of the temperature control device 120 to measure the thermistor provided at the peripheral wall of the container 110 to be measured.
Fig. 6 is a schematic flow chart of a nuclear material metering method provided in an embodiment of the present application, and based on the same inventive concept, the embodiment of the present application further provides a nuclear material metering method, where the method includes:
step 610: the first temperature control device and the second temperature control device in the nuclear material metering system are set to the same temperature.
Step 620: and measuring to obtain a first resistance value and a second resistance value.
Wherein the first resistance value is indicative of a temperature of the first container when the first container contains a nuclear material sample and the second resistance value is indicative of a temperature of the second container when the first container contains a nuclear material sample.
Step 630: and calculating the thermal power of the nuclear material sample according to the first resistance value and the second resistance value based on a preset measurement sensitivity, a first initial resistance value and a second initial resistance value.
The preset measuring sensitivity is used for representing the relation between a resistance difference value and thermal power in the nuclear material metering system, the first initial resistance value is used for representing the temperature of a third container when the third container holds a preset electric simulation body in a non-working state, the second initial resistance value is used for representing the temperature of a second container when the third container does not hold the preset electric simulation body, and the third container is used for holding the preset electric simulation body.
Step 640: and determining the content of the nuclear material sample according to the thermal power of the nuclear material sample.
The first temperature control device is used for keeping the temperature of a first container stable, the second temperature control device is used for keeping the temperature of a second container stable, the first container is used for containing a nuclear material sample to be measured, and the second container is used for containing a blank sample.
In an alternative implementation of the present application, the first temperature control device and the second temperature control device of the nuclear material metering system may be set to the same temperature, so that the corresponding constant temperature boundaries of the first container and the second container of the nuclear material metering system are the same, and the corresponding temperature fields are formed at the same time. And then obtaining a resistor representing the temperature of the container to be measured through measurement, and then calculating the first resistance value and the second resistance value according to the preset measurement sensitivity corresponding to the nuclear material metering system and the first initial resistance value and the second initial resistance value obtained through pre-measurement to obtain the thermal power of the nuclear material sample. And then the content of the nuclear material sample is obtained according to the thermal effect principle of the nuclear material sample. Therefore, the content of the nuclear material sample is measured by setting the constant temperature boundary with the same temperature in the embodiment of the application. Therefore, different containers to be measured can be guaranteed to have constant temperature boundaries with the same temperature, and the precision of measuring the content of the nuclear material sample is improved.
It is worth noting that the first initial resistance value and the second initial resistance value are mainly used for characterizing the resistance value of the nuclear material metering system in the initial state. In order to measure and obtain the instrument state of the nuclear material metering system when the zero power is calibrated, a third container with the same specification as the first container can be arranged in the nuclear material metering system and is used for containing a preset electric simulation body; the third container may be regarded as a first container, that is, the first container is used to hold the predetermined electrical simulant in advance, and then the first container is used to hold the nuclear material sample when the content of the nuclear material sample is measured.
Taking the example of providing the third container in the nuclear material metering system, a description will be given of a process of measuring a first initial resistance value and a second initial resistance value: the power-free preset electric simulator can be placed in the third container, the blank sample is placed in the second container, after the temperature is stable, the first initial resistance value is obtained by measuring through the measuring device corresponding to the third container, and the second initial resistance value is obtained by measuring through the measuring device corresponding to the second container.
On the basis of the foregoing embodiment, step 630 may specifically be: and calculating the first resistance value and the second resistance value by utilizing a pre-established power calculation model based on preset measurement sensitivity, the first initial resistance value and the second initial resistance value to obtain the thermal power of the nuclear material sample. The power calculation model is as follows:
P＝[(R1-R2)-(Ro1-Ro2)]S
wherein P is the thermal power of the nuclear material sample; r1Is the first resistance value; r2Is the second resistance value; ro1The first initial resistance value; ro2The second initial resistance value; and S is the preset measurement sensitivity.
Fig. 7 is a schematic flowchart of another nuclear material metering method provided in an embodiment of the present application, where before step 630, the method further includes:
step 710: and measuring to obtain a third resistance value and a fourth resistance value.
The third resistance value is used for representing the temperature of the third container when the third container contains the preset electric simulator in the working state, and the fourth resistance value is used for representing the temperature of the second container when the third container contains the preset electric simulator.
Step 720: and calculating to obtain the preset measurement sensitivity according to the third resistance value and the fourth resistance value based on a preset thermal power, a first initial resistance value and a second initial resistance value corresponding to a preset electrical simulation body.
In order to obtain the preset measurement sensitivity of the nuclear material metering system, a preset electrical simulation body with known thermal power can be placed in the third container to simulate the nuclear material to be measured before data processing. The temperature corresponding to the preset electrical simulation body is measured, and the preset measurement sensitivity representing the relation between the resistance and the temperature in the nuclear material metering system can be calculated according to the preset thermal power of the preset electrical simulation body, so that the obtained preset measurement sensitivity is more accurate, and the subsequent nuclear material metering is more accurate.
For example, a preset electrical simulator in an operating state may be placed in the third container, and a blank sample may be placed in the second container. And after the temperature is stable, measuring by using a measuring device corresponding to the third container to obtain a third resistance value, and measuring by using a measuring device corresponding to the second container to obtain a fourth resistance value.
On the basis of the foregoing embodiment, step 720 may specifically be: and calculating the third resistance value and the fourth resistance value by utilizing a pre-established calibration model based on the preset thermal power, the first initial resistance value and the second initial resistance value corresponding to the preset electrical simulation body to obtain the preset measurement sensitivity. The calibration model is as follows:
wherein S is the preset measurement sensitivity; p0The preset thermal power of the preset electric simulator is set; rp1Is the third resistance value; rp2Is the fourth resistance value; ro1The first initial resistance value; ro2The second initial resistance value.
As an embodiment provided by the present application, after the first temperature device and the second temperature device are controlled to establish a constant temperature boundary with the same and stable temperature, the nuclear material metering system may be verified, that is, the preset measurement sensitivity corresponding to the nuclear material metering system is measured. And measuring the nuclear material metering system in advance to obtain a first initial resistance value and a second initial resistance value. After the preset electric simulator is placed in a third container with the same specification as the first container or a first container not containing the nuclear material sample, waiting for a first preset time, establishing a stable temperature field in a constant temperature boundary of the preset electric simulator, and measuring the resistance value representing the temperature of the preset electric simulator by using a measuring device corresponding to the third container again, and recording the resistance value as a third resistance value Rp1Measuring the resistance value representing the temperature of the blank sample by a measuring device corresponding to the second container, and recording as a fourth resistance value Rp2. Meanwhile, the first initial resistance value R is corrected according to the calibration modelo1A second initial resistance value Ro2A third resistance value Rp1A fourth resistance value Rp2And a preset thermal power P0Processing is carried out until the measuring sensitive resistance S is preset.
During at least one subsequent metering of the nuclear material, the nuclear material metering system may no longer be calibrated. And then taking out the preset electric simulation body from the third container to be used as a first container, and after a second preset time, putting the nuclear material sample to be measured into the first container, and putting a blank sample into the second container. After waiting for a third preset time, after the nuclear material sample establishes a stable temperature field in the constant temperature boundary, measuring the resistance value representing the temperature of the nuclear material sample by using the measuring device corresponding to the first container again, and recording the resistance value as a first resistance value R1(ii) a Measuring the resistance value representing the temperature of the blank sample by using a measuring device corresponding to the second container, and recording the resistance value as a second resistance value R2. Then according to the preset measurement sensitivity S and the first initial resistance value Ro1And a second initial resistance value Ro2Using a power calculation model to calculate the first resistance value R1And a second resistance value R2And performing calculation processing to obtain the thermal power P corresponding to the nuclear material sample so as to determine the more accurate content of the nuclear material sample in the following process.
As another embodiment provided by the present application, after the first temperature device and the second temperature device are controlled to establish a constant temperature boundary with the same and stable temperature, the nuclear material sample to be measured and the preset electrical simulator may be respectively placed in different containers to be measured, and after waiting for a fourth preset time, both the preset electrical simulator and the nuclear material sample to be measured establish a stable temperature field in the constant temperature boundary. Measuring the resistance value characterizing the temperature of the nuclear material sample, noted as a first resistance value R1. Measuring a resistance value representing the temperature of the preset electrical analog body as a fifth resistance value R0Adjusting the thermal power output by the preset electrical simulator until reaching the fifth resistance value R0And a first resistance value R1And after the heat power output by the preset electric simulator is equal to the heat power output by the preset electric simulator, the heat power output by the preset electric simulator is taken as the corresponding heat power of the nuclear material sample, so that the accurate content of the nuclear material sample can be determined in the following process.
Fig. 8 is a schematic structural diagram of a nuclear material metering device according to an embodiment of the present application, and based on the same inventive concept, a nuclear material metering device 800 is further provided in the embodiment of the present application, including: a temperature setting module 810 is configured to set a first temperature control device and a second temperature control device in the nuclear material metering system to a same temperature. The first temperature control device is used for keeping the temperature of a first container stable, the second temperature control device is used for keeping the temperature of a second container stable, the first container is used for containing a nuclear material sample to be measured, and the second container is used for containing a blank sample. The measuring module 820 is configured to measure a first resistance value and a second resistance value, where the first resistance value is used to represent a temperature of the first container when the first container contains the nuclear material sample, and the second resistance value is used to represent a temperature of the second container when the first container contains the nuclear material sample. The first calculating module 830 is configured to calculate, based on a preset measurement sensitivity, a first initial resistance value and a second initial resistance value, a thermal power of the nuclear material sample according to the first resistance value and the second resistance value. The preset measuring sensitivity is used for representing the relation between a resistance difference value and thermal power in the nuclear material metering system, the first initial resistance value is used for representing the temperature of a third container when the third container holds a preset electric simulation body in a non-working state, the second initial resistance value is used for representing the temperature of a second container when the third container does not hold the preset electric simulation body, and the third container is used for holding the preset electric simulation body. And the second calculating module 840 is used for determining the content of the nuclear material sample according to the thermal power of the nuclear material sample.
On the basis of the foregoing embodiment, the first calculating module 830 is specifically configured to: based on preset measurement sensitivity, a first initial resistance value and a second initial resistance value, calculating the first resistance value and the second resistance value by using a pre-established power calculation model to obtain the thermal power of the nuclear material sample; the power calculation model is as follows:
P＝[(R1-R2)-(Ro1-Ro2)]S
wherein P is the thermal power of the nuclear material sample; r1Is the first resistance value; r2Is the second resistance value; ro1The first initial resistance value; ro2The second initial resistance value; and S is the preset measurement sensitivity.
On the basis of the above embodiment, the nuclear material metering device 800 further includes: the pre-measurement module is used for measuring to obtain a third resistance value and a fourth resistance value; the third resistance value is used for representing the temperature of the third container when the third container contains a preset electric simulator in a working state, and the fourth resistance value is used for representing the temperature of the second container when the third container contains the preset electric simulator; and calculating to obtain the preset measurement sensitivity according to the third resistance value and the fourth resistance value based on a preset thermal power, a first initial resistance value and a second initial resistance value corresponding to a preset electrical simulation body.
On the basis of the foregoing embodiment, the pre-measurement module is specifically configured to: based on preset thermal power, a first initial resistance value and a second initial resistance value corresponding to a preset electrical simulation body, calculating and processing the third resistance value and the fourth resistance value by using a pre-established calibration model to obtain the preset measurement sensitivity; the calibration model is as follows:
wherein S is the preset measurement sensitivity; p0The preset thermal power of the preset electric simulator is set; rp1Is the third resistance value; rp2Is the fourth resistance value; ro1The first initial resistance value; ro2The second initial resistance value.
The embodiment of the present application provides a nuclear material metering device 800 for performing the above method, and the specific implementation thereof is consistent with the implementation of the nuclear material metering method, and is not described herein again.
Referring to fig. 9, fig. 9 is a block diagram illustrating a structure of an electronic device 10 applicable to the embodiment of the present application. The electronic device 10 may include a memory 101, a memory controller 102, a processor 103, a peripheral interface 104, an input-output unit 105, a display unit 107.
The memory 101, the memory controller 102, the processor 103, the peripheral interface 104, the input/output unit 105, and the display unit 107 are electrically connected to each other directly or indirectly to implement data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. At least one software or firmware (firmware) is stored in the memory 101 or a software function module solidified in an Operating System (OS). The processor 103 is used to execute executable modules, software functional modules or computer programs stored in the memory 101.
The Memory 101 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory 101 is configured to store a program, and the processor 103 executes the program after receiving an execution instruction, and the method disclosed in any of the foregoing embodiments of the present application may be applied to the processor 103, or implemented by the processor 103.
The processor 103 may be an integrated circuit chip having signal processing capabilities. The Processor 103 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor 103 may be any conventional processor or the like.
The peripheral interface 104 couples various input/output devices to the processor 103 as well as to the memory 101. In some embodiments, the peripheral interface 104, the processor 103, and the memory controller 102 may be implemented in a single chip. In other examples, they may be implemented separately from the individual chips.
The input/output unit 105 is used for providing input data to a user to enable the user to interact with the electronic device 10. The input/output unit 105 may be, but is not limited to, a mouse, a keyboard, and the like.
The display unit 107 provides an interactive interface (e.g., a user interface) between the electronic device 10 and a user or for displaying image data to a user reference. In this embodiment, the display unit 107 may be a liquid crystal display or a touch display. In the case of a touch display, the display can be a capacitive touch screen or a resistive touch screen, which supports single-point and multi-point touch operations. Supporting single-point and multi-point touch operations means that the touch display can sense touch operations simultaneously generated from one or more positions on the touch display, and the sensed touch operations are sent to the processor 103 for calculation and processing.
It will be appreciated that the configuration shown in fig. 9 is merely illustrative and that the electronic device 10 may include more or fewer components than shown in fig. 9 or may have a different configuration than shown in fig. 9. The components shown in fig. 9 may be implemented in hardware, software, or a combination thereof.
In summary, the embodiments of the present application provide a nuclear material metering system and a method, the system includes: a plurality of containers to be measured including a first container and a second container; the first container is used for containing a nuclear material sample to be measured, and the second container is used for containing a blank sample; the temperature control devices are used for keeping the temperature stable and comprise a first temperature control device and a second temperature control device, the first temperature control device is sleeved outside the first container, and the second temperature control device is sleeved outside the second container; the measuring device is connected with the first container and the second container respectively and used for measuring the temperature of the first container and the second container and calculating the content of the nuclear material sample according to the measured temperature; wherein the temperature of the first temperature control device and the temperature of the second temperature control device are set to be the same when the nuclear material metering system meters the nuclear material sample. According to the embodiment of the application, the containers to be measured, which are respectively filled with the nuclear material sample and the blank sample, are respectively arranged in the plurality of temperature controllers with the same temperature, so that different containers to be measured can be guaranteed to have constant temperature boundaries with the same temperature, and the precision of measuring the content of the nuclear material sample is improved.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
It should be noted that the functions, if implemented in the form of software functional modules and sold or used as independent products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A nuclear material metering system, comprising:
a plurality of containers to be measured including a first container and a second container; the first container is used for containing a nuclear material sample to be measured, and the second container is used for containing a blank sample;
the temperature control devices are used for keeping the temperature stable and comprise a first temperature control device and a second temperature control device, the first temperature control device is sleeved outside the first container, and the second temperature control device is sleeved outside the second container;
the measuring device is connected with the first container and the second container respectively and used for measuring the temperature of the first container and the second container and calculating the content of the nuclear material sample according to the measured temperature;
wherein the temperature of the first temperature control device and the temperature of the second temperature control device are set to be the same when the nuclear material metering system meters the nuclear material sample.
2. The nuclear material metering system of claim 1, wherein the temperature control device includes a water bath conduit that maintains a temperature that is stable, the water bath conduit being wrapped outside the container to be measured.
3. The nuclear material metering system of claim 2, wherein the first temperature control device includes a first water bath conduit and the second temperature control device includes a second water bath conduit;
the first water bath pipeline wrapped outside the first container is connected with the second water bath pipeline wrapped outside the second container.
4. The nuclear material metering system of claim 2, wherein the temperature control device further comprises a housing that is fitted over the water bath conduit, the housing and the water bath conduit forming a vacuum region therebetween.
5. The nuclear material metering system of claim 2, wherein the temperature control device further comprises a thermal idler body disposed between the water bath conduit and the container to be measured.
6. The nuclear material metering system of any one of claims 1-4, further comprising:
the water bath thermostat is provided with the containers to be measured and is used for keeping the environmental temperatures of the containers to be measured the same.
7. A nuclear material metering system according to any one of claims 1 to 4, in which the measuring means includes a measuring member and a thermistor wrapped around the outside of the container to be measured, the measuring member being connected to the thermistor, the measuring member being adapted to measure the resistance of the thermistor, the resistance of the thermistor being adapted to characterise the temperature of the corresponding container to be measured.
8. A nuclear material metering method, comprising:
setting a first temperature control device and a second temperature control device in a nuclear material metering system to the same temperature;
wherein the first temperature control device is used for keeping the temperature of a first container stable, the second temperature control device is used for keeping the temperature of a second container stable, the first container is used for containing a nuclear material sample to be measured, and the second container is used for containing a blank sample;
measuring a first resistance value and a second resistance value, wherein the first resistance value is used for representing the temperature of the first container when the first container contains a nuclear material sample, and the second resistance value is used for representing the temperature of the second container when the first container contains the nuclear material sample;
calculating the thermal power of the nuclear material sample according to a first resistance value and a second resistance value based on a preset measurement sensitivity, the first initial resistance value and the second initial resistance value; the preset measurement sensitivity is used for representing the relation between a resistance difference value and thermal power in the nuclear material metering system, the first initial resistance value is used for representing the temperature of a third container when the third container contains a preset electric simulation body in a non-working state, the second initial resistance value is used for representing the temperature of a second container when the third container does not contain the preset electric simulation body, and the third container is used for containing the preset electric simulation body;
and determining the content of the nuclear material sample according to the thermal power of the nuclear material sample.
9. The nuclear material metering method of claim 8, wherein the calculating thermal power of the nuclear material sample from the first resistance value and the second resistance value based on a preset measurement sensitivity, a first initial resistance value and a second initial resistance value comprises:
based on preset measurement sensitivity, a first initial resistance value and a second initial resistance value, calculating the first resistance value and the second resistance value by using a pre-established power calculation model to obtain the thermal power of the nuclear material sample;
the power calculation model is as follows:
P＝[(R1-R2)-(Ro1-Ro2)]S
wherein P is the thermal power of the nuclear material sample; r1Is the first resistance value; r2Is the second resistance value; ro1The first initial resistance value; ro2The second initial resistance value; and S is the preset measurement sensitivity.
10. The nuclear material metering method of claim 8, wherein before the calculating the thermal power of the nuclear material sample from the first resistance value and the second resistance value based on the preset measurement sensitivity, the first initial resistance value and the second initial resistance value, the method further comprises:
measuring to obtain a third resistance value and a fourth resistance value; the third resistance value is used for representing the temperature of the third container when the third container contains a preset electric simulator in a working state, and the fourth resistance value is used for representing the temperature of the second container when the third container contains the preset electric simulator;
and calculating to obtain the preset measurement sensitivity according to the third resistance value and the fourth resistance value based on a preset thermal power, a first initial resistance value and a second initial resistance value corresponding to a preset electrical simulation body.
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Application publication date: 20200619 |