Integrated full tritium and tritiated water automatic sampling device and application method thereof

By designing an automatic sampling device for integrated all -round and 水 通过 water, using modular assembly and remote control, the problem of low manual operation efficiency, high cost and safety in existing technologies have been solved. Reduce costs and enhance safety.

CN115077994BActive Publication Date: 2025-01-28INSTITUTE OF NUCLEAR PHYSICS AND CHEMISTRY CHINA ACADEMY OF ENGINEERING PHYSICS
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202210808526.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-07-11
Publication Date
2025-01-28
Estimated Expiration
2042-07-11

AI Technical Summary

Technical Problem

The existing tritiated water sampling device adopts manual operation, which is low efficiency and high cost, and has a large risk factor and complex equipment layout when operating in radioactive field.

Method used

It is designed to design an integrated full -length and tadpole water sampling device, including multiple groups of samples, control units and remote controllers, local console, and automated sampling through modular assembly and remote control.

Benefits of technology

The automation sampling has been achieved, the efficiency is improved, the cost of manpower is reduced, the layout of the on -site equipment is simplified, the security is enhanced, and the higher adaptability and intelligence is achieved through intelligent control.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN115077994B_ABST
    Figure CN115077994B_ABST
Patent Text Reader

Abstract

The present invention discloses an integrated full-tritium and tritiated water automatic sampling device and an application method thereof, comprising: a housing; a plurality of sampling units coordinated with an external environment; a control unit connected to each group of sampling units in communication; a remote control console and a local control console connected to the control unit in communication through a communication module; wherein each group of sampling units is configured to include: a first sampling passage connected to a sampling channel through a three-way valve for full-tritium sampling; and a second sampling passage connected to the sampling channel through the three-way valve for tritiated water sampling. The present invention provides an integrated full-tritium and tritiated water automatic sampling device and an application method thereof, by improving the structure of the device, so that compared with the prior art in which one device can only correspond to one monitoring point, the integrated full-tritium sampling device of the present invention can realize the layout of monitoring points of a laboratory building covered by one device through modular assembly, and further realize remote monitoring and control through remote control.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the field of tritium monitoring, and more specifically, to an integrated full tritium and tritiated water automatic sampling device used in tritium monitoring and an application method thereof. Background Art

[0002] With the widespread application of tritium in military and civilian fields, at the same time, tritium is a low-energy β-radioactive substance. The maximum range of β-rays emitted by its decay in the air is about 5mm. Tritium cannot cause external radiation damage to the human body. In tritium operation sites, tritium mainly enters the human body through inhalation, skin ingestion, and ingestion. Tritium gas is converted into tritiated water in the human body within about 4 hours. The hazard of tritium water is 10000:1 times that of tritium gas, causing great internal radiation damage to the human body.

[0003] The existing tritiated water sampling device is manually operated and manned. When certain conditions are met, the sampling device is manually started, which has low work efficiency, high labor costs, and radioactive on-site operations, which increases the risk factor. At the same time, one sampling device needs to be arranged at one sampling site, and the layout of on-site equipment and pipelines is complicated. Summary of the invention

[0004] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages which will be described hereinafter.

[0005] In order to achieve these purposes and other advantages according to the present invention, an integrated full-tritium and tritiated water automatic sampling device is provided, comprising:

[0006] A casing for packaging;

[0007] A plurality of sampling units are arranged in the housing and matched with the external environment;

[0008] A control unit in communication with each group of sampling units;

[0009] A remote control console and a local control console connected to the control unit through a communication module;

[0010] Wherein, each group of sampling units is configured to include:

[0011] Sampling channels that match the external environment;

[0012] A first sampling passage connected to the sampling channel through a three-way valve for full tritium sampling;

[0013] A second sampling passage connected to the sampling channel through the three-way valve for sampling tritiated water;

[0014] A first filter is provided at the front end of each three-way valve.

[0015] Preferably, the first sampling passage and the second sampling passage are both configured to include an integrated cold trap and a sampling bottle matched therewith;

[0016] A catalytic oxidation bed with an electric heating mechanism and a second filter are also provided on the first sampling passage, and a matching first solenoid valve is provided between the integrated cold trap on the first sampling passage and the second filter, and a matching second solenoid valve is provided between the three-way valve and the catalytic oxidation bed;

[0017] A matching third electromagnetic valve is arranged between the integrated cold trap and the three-way valve on the second sampling passage.

[0018] Preferably, it also includes:

[0019] Overflow devices matched with each set of sampling units;

[0020] A radioactive liquid collection tank for collecting liquid from the overflow device;

[0021] A vacuum pump that cooperates with the collection tank and is connected to the special discharge pipeline;

[0022] A power module electrically connected to each component;

[0023] Wherein, the overflow device is connected to the collection tank through a matching fourth solenoid valve and a connecting pipeline, and a matching liquid level sensor is provided on the overflow device;

[0024] The sampling bottles of each sampling channel are connected to the overflow device through the matching flow meter, pressure gauge and fifth electromagnetic valve;

[0025] The solenoid valves, liquid level sensors, flow meters, pressure gauges, integrated cold traps, catalytic oxidation beds, and vacuum pumps are configured to be in communication connection with a control unit.

[0026] A method for using an integrated full-tritium and tritiated water automatic sampling device, comprising:

[0027] Step 1: A first software module on a remote control console or a local console controls a power module to power on a control unit;

[0028] Step 2, based on the sampling conditions and properties, setting the sampling parameters of the second software module on the control unit through the first software module or manually;

[0029] Step three: the second software module performs a one-key sampling operation based on the set sampling parameters.

[0030] Preferably, in step 2, the sampling parameters are configured to include:

[0031] Flow value and flow difference of the flow meter, pressure value of the pressure gauge, working temperature of the electric heating mechanism and integrated cold trap, and sampling volume.

[0032] Preferably, in step three, the one-key sampling process is configured to include:

[0033] S30, after the temperature values ​​of the electric heating mechanism and the integrated cold trap meet the predetermined conditions, the control unit controls the first solenoid valve, the second solenoid valve, and the third solenoid valve to be in working state;

[0034] S31, the sampling gas in the sampling channel enters the three-way valve through the first filter and is divided into two paths through the three-way valve, one path is through the first sampling path for full tritium sampling, and the other path is through the second sampling path for tritiated water sampling;

[0035] S32, in the first sampling passage, the sampling gas flowing in through the first solenoid valve is treated by the catalytic oxidation bed, enters the integrated cold trap through the first filter and the second solenoid valve to be condensed into liquid, and then flows into the corresponding sampling bottle to achieve full tritium sampling;

[0036] In the second sampling passage, the sampling gas flowing in through the third solenoid valve enters the integrated cold trap to be condensed into liquid, and then flows into the corresponding sampling bottle to achieve the sampling of tritiated water;

[0037] The control unit switches the working states of the first solenoid valve, the second solenoid valve, and the third solenoid valve based on the sampling volume and the flow rate of the sampling gas to complete the sampling operations of each route;

[0038] S33, after completing the sampling operation, the control unit sends a sampling completion signal to the remote control center and / or the local control console through the communication module.

[0039] Preferably, S32 also includes:

[0040] The control unit controls the fifth solenoid valve to be in a working state, and controls the flow meter and the pressure meter to be in a working state based on the set flow value, flow difference, and pressure value;

[0041] In each sampling path, the liquid in the sampling bottle is collected into the overflow device through the flow meter, the pressure gauge, and the fifth solenoid valve;

[0042] The control unit obtains the liquid level value in the overflow in real time through the liquid level sensor, and after the liquid level reaches or exceeds the predetermined position, switches the working state of the fifth solenoid valve to discharge the liquid in the overflow into the radioactive liquid collection tank, and then enters the special discharge pipe through the vacuum pump.

[0043] The present invention includes at least the following beneficial effects: First, by improving the structure of the equipment, compared with the prior art in which one device can only correspond to one monitoring point, the integrated full tritium sampling device of the present invention can be assembled in a modular manner, so that one device can cover the monitoring point layout of a laboratory building, and further remote monitoring and control can be achieved through remote control, which has better safety and further simplifies the on-site lines and equipment layout.

[0044] Secondly, the present invention uses the application method of the integrated full-tritium automatic sampling device, adopts remote operation, modular splicing, intelligent identification, automatic control, one-key sampling, and automatic stop. The sampling volume can use hydraulic recognition, flow rate recognition, difference recognition and other functions to determine the intelligent sampling process of the device, which is more intelligent.

[0045] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 The figure is a schematic diagram of the structural layout of an integrated full-tritium and tritiated water automatic sampling device in one embodiment of the present invention. DETAILED DESCRIPTION

[0047] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0048] It should be understood that terms such as “having”, “including” and “comprising” used herein do not specify the existence or addition of one or more other elements or combinations thereof.

[0049] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Figure 1 The invention shows an implementation form of an integrated full-tritium and tritiated water automatic sampling device, which includes:

[0052] The housing for packaging may also be provided with an ultra-low background liquid scintillation counter, a display screen, etc., which are communicated with the control unit according to actual application requirements;

[0053] A plurality of sampling units 1 are arranged in the shell and cooperate with the external environment. Through the cooperation of the plurality of sampling units, compared with the prior art in which a full tritium sampler can only perform sampling at one station, the integrated full tritium automatic sampling device of the present scheme can realize multi-channel sampling through modular assembly, and can cover multiple monitoring points of a laboratory building with one device, and has better adaptability;

[0054] A control unit 2 in communication with each group of sampling units;

[0055] A remote control console 3 and a local control console 4 connected to the control unit through a communication module;

[0056] Wherein, each group of sampling units is configured to include:

[0057] A sampling channel 5 that matches the external environment;

[0058] A first sampling passage 6 connected to the sampling channel through a three-way valve for full tritium sampling;

[0059] A second sampling passage 7 connected to the sampling channel through the three-way valve for sampling tritiated water;

[0060] A first filter 8 is arranged at the front end of each three-way valve. In the scheme of the present invention, the control of each sampling unit is realized by a control unit, and the remote control center and the local control console device remotely or locally set the operating parameters of the control unit through the communication module, and each group of sampling units can realize the sampling of total tritium and tritiated water, and multiple groups of sampling channels can be distributed in different positions through structural layout, so that one device can detect all the points to be tested in a building, the structure is simpler, the on-site pipeline layout is simpler, and it has better adaptability.

[0061] like Figure 1 In another example, the first sampling passage and the second sampling passage are both configured to include an integrated cold trap 9 and a sampling bottle 10 matched therewith. In practical applications, after the sample is condensed in the integrated cold trap (condenser collector), the condensed and collected sample is automatically flowed into a 50mL standard sampling bottle for sampling. The connection between the integrated cold trap and other components is detachable to facilitate replacement. At the same time, the sealing of the integrated cold trap can also prevent the sealing liquid from leaking. In further applications, the sealing of the sampling bottle and the interface is sealed with a silicone ring.

[0062] Among them, a catalytic oxidation bed 11 with an electric heating mechanism and a second filter 12 are also arranged on the first sampling passage, and a matching first solenoid valve 13 is arranged between the integrated cold trap on the first sampling passage and the second filter, and a matching second solenoid valve 14 is arranged between the three-way valve and the catalytic oxidation bed. In this structure, the electric heating mechanism, such as an electric furnace, can adopt intelligent temperature control, breaking the original manual setting, manually monitoring the temperature, and the electric furnace and the catalytic oxidation bed are integrated, so that the volume of the equipment is controllable, the temperature rise rate is fast, the temperature deviation in the temperature control process can be controlled with high precision, and the thermal insulation is good. In actual applications, the catalytic oxidation bed breaks the traditional bed structure and adopts 316L stainless steel material, Ra≤0.4μm filtration, and adopts a three-stage filter structure, the first stage adopts stainless steel mesh filtration, the second stage adopts stainless steel cotton filtration, and the third stage adopts T-type filter filtration, and the two ends are flange-connected, which is easy to replace the catalyst;

[0063] A matching third solenoid valve 15 is provided between the integrated cold trap and the three-way valve on the second sampling passage.

[0064] like Figure 1 , in another example, further comprising:

[0065] The overflow device 16 (also called an anti-overflow tank) matched with each group of sampling units is used to act as a buffer to collect the liquid in each sampling channel;

[0066] A radioactive liquid collection tank (not shown) for collecting the liquid from the overflower, which is used to specifically collect the radioactive liquid and discharge it quantitatively and / or regularly as required;

[0067] The vacuum pump 17, which is matched with the collection tank and connected with the special discharge pipeline, realizes a one-pump multi-channel sampling mode through the collection of the overflow device and the vacuum pump. Compared with the existing one-pump-one-channel, the volume controllability is better;

[0068] A power module (not shown) electrically connected to each component;

[0069] The overflower is connected to the collection tank through a matching fourth solenoid valve 18 and a connecting pipeline, and a matching liquid level sensor 19 is provided on the overflower. In this structure, an anti-overflow tank and a matching fourth solenoid valve and a liquid level sensor are designed. As long as the liquid level exceeds a predetermined range, the liquid in the overflower can be discharged into the collection tank through the fourth solenoid valve to prevent the vacuum pump from being damaged by the liquid flowing into the vacuum pump body during operation due to excessive liquid level.

[0070] The sampling bottles of each sampling passage are connected to the overflow device through the matching flow meter 20, pressure gauge 21, and fifth solenoid valve 22. In this structure, when the liquid in the sampling bottle exceeds the range, it can flow into the overflow device through the flow meter, pressure gauge, and fifth solenoid valve to ensure that the capacity in the sampling bottle meets the sampling requirements;

[0071] The solenoid valves, liquid level sensors, flow meters, pressure gauges, integrated cold traps, catalytic oxidation beds, and vacuum pumps are configured to communicate with the control unit. Compared with existing equipment in which flow regulation, valves, power supplies, pumps, and the start and stop of electric furnaces are all manually operated, the integrated full-tritium and tritiated water sampling device of the present invention uses network optical fiber transmission to control its various components and can be controlled by remote software, making it more intelligent.

[0072] A method for using an integrated full-tritium and tritiated water automatic sampling device, comprising:

[0073] Step 1: The first software module on the remote control console or the local console controls the power module to power on the control unit. In this solution, the control unit cooperates with the communication module to realize the hardware device of remote transmission. The control unit adopts PLC for control. There are two parallel modes. One is to interconnect and communicate through the communication module and the network cable, which is called the local mode; the other is to interconnect and communicate with the remote control console through the cooperation of the communication module and the optical fiber, which is called the remote mode. In actual application, the network cable is used to pass through the optoelectronic switch, transfer the optical fiber to the remote control console, and then merge it into the remote industrial computer for software control. That is, in actual application, the embedded operation window on the shell can be used to cooperate with the mobile terminal to realize local control, or it can be controlled by the remote industrial computer. Manual and automatic sampling operations can be realized. The sampling is controlled by the whole software through the cooperation of the modules of each software. The system leakage rate is ≤1.0×10 -4 Pa·L / s;

[0074] Step 2, based on the sampling conditions and properties, setting the sampling parameters of the second software module on the control unit through the first software module or manually;

[0075] Step 3, the second software module performs a one-key sampling operation based on the set sampling parameters;

[0076] In step 2, the sampling parameters are configured to include:

[0077] Flow value and flow difference of flow meter, pressure value of pressure gauge, working temperature of electric heating mechanism and integrated cold trap, sampling volume;

[0078] In step three, the one-key sampling process is configured to include:

[0079] S30, after the temperature values ​​of the electric heating mechanism and the integrated cold trap meet the predetermined conditions, the control unit controls the first solenoid valve, the second solenoid valve, and the third solenoid valve to be in working state;

[0080] S31, the sampling gas in the sampling channel enters the three-way valve through the first filter and is divided into two paths through the three-way valve, one path is through the first sampling path for full tritium sampling, and the other path is through the second sampling path for tritiated water sampling;

[0081] S32, in the first sampling passage, the sampling gas flowing in through the first solenoid valve is treated by the catalytic oxidation bed, enters the integrated cold trap through the first filter and the second solenoid valve to be condensed into liquid, and then flows into the corresponding sampling bottle to achieve full tritium sampling;

[0082] In the second sampling passage, the sampling gas flowing in through the third solenoid valve enters the integrated cold trap to be condensed into liquid, and then flows into the corresponding sampling bottle to achieve the sampling of tritiated water;

[0083] The control unit switches the working states of the first solenoid valve, the second solenoid valve, and the third solenoid valve based on the sampling volume and the flow rate of the sampling gas to complete the sampling operations of each route;

[0084] S33, after completing the sampling operation, the control unit sends a sampling completion signal to the remote control center and / or the local control center through the communication module;

[0085] Also included in S32:

[0086] The control unit controls the fifth solenoid valve to be in a working state, and controls the flow meter and the pressure meter to be in a working state based on the set flow value, flow difference, and pressure value;

[0087] In each sampling path, the liquid in the sampling bottle is collected into the overflow device through the flow meter, the pressure gauge, and the fifth solenoid valve;

[0088] The control unit obtains the liquid level value in the overflow in real time through the liquid level sensor, and switches the working state of the fifth solenoid valve after the liquid level reaches or exceeds the predetermined position, so as to discharge the liquid in the overflow into the radioactive liquid collection tank, and then enters the special discharge pipe through the vacuum pump. In practical applications, the automatic sampling device for total tritium and tritiated water includes a multi-stage sampling unit, and each sampling unit is composed of two paths, one for total tritium sampling and the other for tritiated water sampling. After the sampling gas in the sampling channel enters through the sampling port, it is filtered by the first filter and then enters the two-way sampling path through the three-way valve. The first path passes through the first solenoid valve, then through the integrated catalytic oxidation bed, the second filter, and then through the second solenoid valve. After condensation through the integrated cold trap (the cold trap is a spiral sampler), the liquid automatically flows into the 50ml sampling bottle, and then passes through the flow meter, the pressure gauge, and the solenoid valve to be collected to the overflow. The overflow The flow meter has a liquid level sensor. When the liquid level reaches a certain position, the fifth solenoid valve is automatically opened to discharge the liquid into a special radioactive collection tank, and then passes through a vacuum pump to enter a special discharge pipe; the second path is diverted to the third solenoid valve through a three-way valve and then passes through an integrated cold trap (a spiral sampler in the cold trap) for condensation. The liquid then automatically flows into a 50ml sampling bottle and then passes through a flow meter, a pressure gauge, and a solenoid valve. The overflow device has a liquid level sensor. When the liquid level reaches a certain position, the solenoid valve is automatically opened to discharge the liquid into a special radioactive collection tank, and then passes through a vacuum pump to enter a special discharge pipe to complete the sampling operation.

[0089] Software application description: The software of the integrated full-tritium automatic sampling device first performs remote power startup, sets the flow, pressure, and flow difference according to the sampling conditions and properties, and then turns on the one-touch sampling system button. According to the set temperature values ​​of the integrated electric furnace and the integrated cold trap, when certain conditions are met, sampling is automatically performed, the sampling volume and flow rate are automatically identified, and the liquid automatically flows into the sampling bottle. This is the first time that this method has been used in domestic full-tritium sampling devices. No manual thawing is required, and the liquid is transferred after flowing in. When the conditions are met, the device intelligently identifies the automatic sampling stop and feeds back the sampling completion signal on the software page. When an emergency occurs and liquid flows into the pump body, the developed overflow is used to introduce the liquid into the overflow. When the overflow reaches the upper position of the liquid level sensor, it automatically identifies and turns on the solenoid valve switch to discharge the liquid to prevent the pump body from being damaged.

[0090] The integrated full-tritium and tritiated water automatic sampling device of the present invention is assembled in modules according to the number of tritium laboratories actually involved. The whole system adopts two modes, remote and local. The opening and closing of the solenoid valve, mass flow control, pressure control, temperature control of the catalytic bed integrated electric furnace, temperature control of the cold trap and other components in the device are all remotely operated by software, eliminating the previous manual operation. According to the parameters set by the software, automatic remote one-key sampling is performed, and the sampling is automatically stopped after the sampling is completed, and a sampling completion signal is issued, thereby improving work efficiency and reducing the risk of personnel operation. In terms of the sampling amount, hydraulic recognition, flow rate recognition, difference recognition and other functions are used to determine the intelligent sampling process of the device. In specific applications, tritiated water sampling is performed according to the experimental process flow, and one-key automatic sampling is adopted. The sampling amount in the experimental process is determined according to three set values: the adjusted sampling hydraulic pressure value, the flow rate setting value, and the difference in the two-way sampling flow rate.

[0091] The above solution is only an illustration of a preferred embodiment, but is not limited thereto. When implementing the present invention, appropriate replacement and / or modification can be performed according to user needs.

[0092] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

[0093] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. An integrated full tritium and tritiated water automatic sampling device, characterized in that: include: A casing for packaging; A plurality of sampling units are arranged in the housing and matched with the external environment; A control unit in communication with each group of sampling units; A remote control console and a local control console connected to the control unit through a communication module; Wherein, each group of sampling units is configured to include: Sampling channels that match the external environment; A first sampling passage connected to the sampling channel through a three-way valve for full tritium sampling; A second sampling passage connected to the sampling channel through the three-way valve for sampling tritiated water; A first filter disposed at the front end of each three-way valve; The first sampling passage and the second sampling passage are both configured to include an integrated cold trap and a sampling bottle matched therewith; A catalytic oxidation bed with an electric heating mechanism and a second filter are also provided on the first sampling passage, and a matching first solenoid valve is provided between the integrated cold trap on the first sampling passage and the second filter, and a matching second solenoid valve is provided between the three-way valve and the catalytic oxidation bed; A matching third solenoid valve is provided between the integrated cold trap and the three-way valve on the second sampling passage; Also includes: Overflow devices matched with each set of sampling units; A radioactive liquid collection tank for collecting liquid from the overflow device; A vacuum pump that cooperates with the collection tank and is connected to the special discharge pipeline; A power module electrically connected to each component; Wherein, the overflow device is connected to the collection tank through a matching fourth solenoid valve and a connecting pipeline, and a matching liquid level sensor is provided on the overflow device; The sampling bottles of each sampling channel are connected to the overflow device through the matching flow meter, pressure gauge and fifth electromagnetic valve; The solenoid valves, liquid level sensors, flow meters, pressure gauges, integrated cold traps, catalytic oxidation beds, and vacuum pumps are configured to be in communication connection with a control unit.

2. A method for using the integrated full tritium and tritiated water automatic sampling device as claimed in claim 1, characterized in that: include: Step 1: A first software module on a remote control console or a local console controls a power module to power on a control unit; Step 2, based on the sampling conditions and properties, setting the sampling parameters of the second software module on the control unit through the first software module or manually; Step three: the second software module performs a one-key sampling operation based on the set sampling parameters.

3. The application method of the integrated full tritium and tritiated water automatic sampling device as claimed in claim 2, characterized in that: In step 2, the sampling parameters are configured to include: Flow value and flow difference of the flow meter, pressure value of the pressure gauge, working temperature of the electric heating mechanism and integrated cold trap, and sampling volume.

4. The application method of the integrated full tritium and tritiated water automatic sampling device as claimed in claim 2, characterized in that: In step three, the one-key sampling process is configured to include: S30, after the temperature values ​​of the electric heating mechanism and the integrated cold trap meet the predetermined conditions, the control unit controls the first solenoid valve, the second solenoid valve, and the third solenoid valve to be in working state; S31, the sampling gas in the sampling channel enters the three-way valve through the first filter and is divided into two paths through the three-way valve, one path is through the first sampling path for full tritium sampling, and the other path is through the second sampling path for tritiated water sampling; S32, in the first sampling passage, the sampling gas flowing in through the first solenoid valve is treated by the catalytic oxidation bed, enters the integrated cold trap through the first filter and the second solenoid valve to be condensed into liquid, and then flows into the corresponding sampling bottle to achieve full tritium sampling; In the second sampling passage, the sampling gas flowing in through the third solenoid valve enters the integrated cold trap to be condensed into liquid, and then flows into the corresponding sampling bottle to achieve the sampling of tritiated water; The control unit switches the working states of the first solenoid valve, the second solenoid valve, and the third solenoid valve based on the sampling volume and the flow rate of the sampling gas to complete the sampling operations of each route; S33, after completing the sampling operation, the control unit sends a sampling completion signal to the remote control center and / or the local control console through the communication module.

5. The application method of the integrated full tritium and tritiated water automatic sampling device as claimed in claim 2, characterized in that: Also included in S32: The control unit controls the fifth solenoid valve to be in a working state, and controls the flow meter and the pressure meter to be in a working state based on the set flow value, flow difference, and pressure value; In each sampling path, the liquid in the sampling bottle is collected into the overflow device through the flow meter, the pressure gauge, and the fifth solenoid valve; The control unit obtains the liquid level value in the overflow in real time through the liquid level sensor, and after the liquid level reaches or exceeds the predetermined position, switches the working state of the fifth solenoid valve to discharge the liquid in the overflow into the radioactive liquid collection tank, and then enters the special discharge pipe through the vacuum pump.

Citation Information

Patent Citations

  • Fast sampling system for full tritium in gas

    CN103728163A

  • Sampling device and measurement method for multi-form tritium in atmosphere around nuclear facility

    CN106018003A