CN110576004A - Flushing device and method for radioactive waste liquid transportation system - Google Patents
Flushing device and method for radioactive waste liquid transportation system Download PDFInfo
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- CN110576004A CN110576004A CN201910677964.2A CN201910677964A CN110576004A CN 110576004 A CN110576004 A CN 110576004A CN 201910677964 A CN201910677964 A CN 201910677964A CN 110576004 A CN110576004 A CN 110576004A
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- 239000007788 liquid Substances 0.000 title claims abstract description 343
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 151
- 239000002901 radioactive waste Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 149
- 238000005202 decontamination Methods 0.000 claims abstract description 69
- 239000010865 sewage Substances 0.000 claims abstract description 64
- 230000003588 decontaminative effect Effects 0.000 claims abstract description 63
- 239000002699 waste material Substances 0.000 claims abstract description 51
- 238000012545 processing Methods 0.000 claims abstract description 45
- 230000002285 radioactive effect Effects 0.000 claims abstract description 29
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 45
- 238000005406 washing Methods 0.000 claims description 24
- 238000005086 pumping Methods 0.000 claims description 7
- 239000003599 detergent Substances 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004887 air purification Methods 0.000 claims description 3
- 239000002925 low-level radioactive waste Substances 0.000 description 14
- 239000010808 liquid waste Substances 0.000 description 11
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/20—Disposal of liquid waste
- G21F9/22—Disposal of liquid waste by storage in a tank or other container
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Mechanical Engineering (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention relates to a flushing device and a method for a radioactive waste liquid transportation system, wherein the device comprises a vehicle-mounted processing device, and the vehicle-mounted processing device comprises a middle sewage discharge temporary storage mechanism for storing radioactive sewage, a low sewage discharge temporary storage mechanism for storing flushing liquid after a flushing hose is flushed, and a flushing decontamination mechanism for storing the flushing liquid; a receiving interface configured to provide a flushing fluid to flush the hose; and a discharge interface device including a medium blowdown liquid storage mechanism and a low blowdown liquid storage mechanism. The method comprises the process of receiving the radioactive waste liquid by the vehicle-mounted treatment device and the process of discharging the radioactive waste liquid by the vehicle-mounted treatment device, the effective decontamination of the hose is realized, the safety of operators is ensured, and the amount of secondary waste liquid is reduced to the maximum extent.
Description
Technical Field
the invention relates to a flushing device and a flushing method for a radioactive liquid waste conveying system, in particular to a flushing device and a flushing method for a radioactive liquid waste conveying system.
background
In the last decades, radioactive liquid wastes (middle and low level waste liquid, waste resin and organic waste liquid) generated in the nuclear activity process in China are basically conveyed by means of underground deep burying or aerial laying of pipelines on the ground in the nuclear industry. In recent years, some nuclear research units in China have tried to carry out on-site transportation of medium-level waste liquid and waste resin by using vehicle-mounted transportation systems on the basis of the reference of foreign experience.
Through analyzing the process principle of a vehicle-mounted transportation system for the released waste liquid in a certain research institute and combining the cold and hot debugging results of the system, the quick connector of the transportation hose needs to be washed and decontaminated before being disassembled, namely when the waste liquid is received, the waste liquid is stopped being received after the waste liquid reaches 80% of the liquid level, the transportation hose is washed, the washing operation is stopped when the liquid level reaches 90%, and if the radiation protection requirement cannot be met, the washing operation can be manually carried out again until the liquid level reaches 93%; after the waste liquid is unloaded and stored, the transfer hose needs to be washed again for decontamination, and after the washing and decontamination are finished, the washing liquid is left in the shielding container of the vehicle-mounted transportation system.
According to the specification data, a rinse decontamination operation from 80% liquid level to 90% liquid level results in a volume of the decontamination solution of 106L, and a rinse decontamination operation from 80% liquid level to 93% liquid level results in a volume of the decontamination solution of 138L. After the receiving and transferring operations of the intermediate waste liquid are finished, the transfer hose needs to be washed for decontamination, and 276L decontamination liquid is generated once receiving and transferring operation according to maximum estimation, and occupies about 32% of the volume of the original waste liquid. And the produced decontamination solution is discharged into a middle storage tank as middle discharge waste liquid.
The decontamination solutions produced by these types of transfer hose flushing operations are low level waste liquids, classified according to radioactivity level. From the viewpoint of radioactive waste minimization management, a method of storing a low-level radioactive waste liquid as a medium-level radioactive waste liquid does not satisfy the waste minimization requirement.
secondly, put the waste liquid and discharge the back from vehicular transport system and will be sucked to the shield can of vehicular transport system and keep in the decontamination solution that the decontamination that the fortune hose washed the decontamination and produces will be discharged when waiting for next transportation, deposit easily scale deposit for a long time, and these decontamination solutions will crowd and take up next receiving volume simultaneously.
Disclosure of Invention
In order to solve the problems, the invention provides a flushing device and a flushing method for a radioactive waste liquid transportation system, which realize effective decontamination of a hose, ensure the safety of operators and maximally reduce the amount of secondary waste liquid. The low-pollution discharge liquid temporary storage mechanism can be used for separately collecting and storing low-pollution discharge liquid generated in the decontamination process, effectively minimizing waste and ensuring that the transport capacity is not reduced.
the invention provides a flushing device for a radioactive waste liquid transportation system, which comprises:
the vehicle-mounted processing device comprises a middle sewage discharge temporary storage mechanism for storing radioactive sewage, a low sewage discharge temporary storage mechanism for storing flushing liquid after flushing the hose, and a flushing and decontaminating mechanism for storing the flushing liquid;
a receiving interface configured to provide a flushing fluid to flush the hose; and
the discharge interface device comprises a middle sewage discharge liquid storage mechanism and a low sewage discharge liquid storage mechanism;
Before transportation, the vehicle-mounted processing device receives radioactive dirty liquid and stores the radioactive dirty liquid in the dirty liquid temporary storage mechanism, the receiving interface device is connected with the vehicle-mounted processing device through a hose and provides a flushing liquid flushing hose, and the flushed flushing liquid is stored in the dirty liquid temporary storage mechanism;
after transportation, the discharge interface device is connected with the vehicle-mounted processing device through a hose, and the middle sewage discharge liquid storage mechanism receives the radioactive sewage liquid discharged by the middle sewage discharge liquid temporary storage mechanism; the low sewage discharge liquid storage mechanism receives the washing liquid discharged by the low sewage discharge liquid temporary storage mechanism; and then the flushing decontamination mechanism flushes the hose and conveys the flushing liquid into the low decontamination liquid storage mechanism.
The invention is further improved in that the vehicle-mounted processing device also comprises a vehicle-mounted niche provided with a connector, and the vehicle-mounted niche receives or discharges radioactive waste liquid through a hose; and the middle sewage discharge temporary storage mechanism, the low sewage discharge temporary storage mechanism and the flushing decontamination mechanism are respectively connected with the vehicle-mounted niche.
The temporary storage mechanism for the low-discharge dirty liquid is further improved in that the temporary storage mechanism for the low-discharge dirty liquid comprises a vehicle-mounted dirty liquid collecting container, and the vehicle-mounted dirty liquid collecting container is connected with the vehicle-mounted niche through a pipeline; and the vehicle-mounted dirty liquid collecting container is connected with a vehicle-mounted vacuum pump and an air compressor.
The invention further improves that the vehicle-mounted waste liquid collecting container is provided with a first pressure gauge and a first liquid level gauge.
The invention is further improved in that a first pressure control pipeline connected with an air compressor and a first vacuum exhaust pipeline connected with a vacuum pump are arranged on the vehicle-mounted dirty liquid collecting container.
In a further development of the invention, the flushing and decontamination means comprises a vehicle-mounted flushing agent container which is connected to the vehicle-mounted niche via a flushing agent discharge line and to which an air compressor is connected.
The vehicle-mounted flushing agent container is further improved in that a second pressure gauge and a second liquid level gauge are arranged on the vehicle-mounted flushing agent container, and a first exhaust pipe capable of being communicated with external air and a second pressure control pipeline connected with an air compressor are arranged on the vehicle-mounted flushing agent container.
the invention further improves that the receiving interface device comprises a middle waste liquid storage container and a fixed flushing agent container; the middle waste liquid storage container and the fixed flushing agent container are respectively connected with a fixed working box;
The fixed working box can be connected with a hose so as to be connected with the vehicle-mounted processing device, and when the vehicle-mounted processing device receives radioactive waste liquid, the temporary storage mechanism of the middle waste liquid is communicated with the storage container of the middle waste liquid and receives the radioactive waste liquid; after receiving the completion, low blowdown liquid temporary storage mechanism intercommunication fixed flushing agent container receives the flush fluid of washing hose.
The invention has the further improvement that the intermediate waste liquid storage container is connected with an air purification system through a second exhaling pipeline; the fixed washing container is provided with a liquid level meter, an overflow pipeline connected with a floor drain system and a second detergent loading pipeline connected with a water pipe.
The invention is further improved in that a second vacuum exhaust pipeline connected with the waste gas treatment device is arranged on the middle sewage discharge storage mechanism, and a third vacuum exhaust pipeline connected with the waste gas treatment device is arranged on the low sewage discharge storage mechanism.
According to another aspect of the present invention, there is also provided a decontamination method using the above-described washing apparatus for a radioactive liquid waste transport system, comprising:
During the process of receiving the radioactive waste liquid by the vehicle-mounted treatment device,
Step A1, communicating the vehicle-mounted processing device with the receiving interface device;
Step A2, the temporary sewage discharge liquid storage mechanism receives the radioactive waste liquid of the receiving interface device;
Step A3, after the receiving is finished, the receiving interface device provides a flushing liquid flushing hose and receives the flushing liquid through a low-sewage temporary storage mechanism;
In the process of discharging the radioactive waste liquid by the vehicle-mounted treatment device,
Step B1, communicating the vehicle-mounted processing device and the discharge interface device,
step B2, discharging the radioactive waste liquid in the middle sewage discharge liquid temporary storage mechanism into a middle sewage discharge liquid storage mechanism, and discharging the flushing liquid in the low sewage discharge liquid temporary storage mechanism into a low sewage discharge liquid storage mechanism;
And step B3, after the discharging is finished, flushing the hose through the flushing decontamination mechanism, and conveying the flushing liquid into the low decontamination liquid storage mechanism.
The invention further improves the method that after the step A3 is completed, the radioactive dosage level on the surface of the hose is measured by using a long rod type dosage rate meter, and if the radioactive dosage level does not meet the radiation protection requirement directly operated by a person, the step A3 is repeated until the requirement is met.
the invention has the further improvement that in the process that flushing liquid in the temporary low-pollution liquid storage mechanism is discharged to the low-pollution liquid storage mechanism, the pressure is increased in the vehicle-mounted pollution liquid collection container, and the low-pollution liquid is pushed into the low-pollution liquid storage mechanism through the pressure; or the low-sewage-discharge liquid storage mechanism sucks the low-sewage-discharge liquid in the vehicle-mounted sewage-discharge liquid collection container into the low-sewage-discharge liquid storage mechanism by pumping negative pressure.
the invention has the further improvement that in the process that the flushing decontamination mechanism conveys the flushing liquid to the low-pollution liquid storage mechanism, the pressure is increased through the vehicle-mounted flushing agent container, and the flushing liquid is pushed into the low-pollution liquid storage mechanism through the hose by the pressure; or the flushing liquid in the vehicle-mounted flushing agent container is sucked into the low-sewage-discharge liquid storage mechanism through the hose by pumping negative pressure in the low-sewage-discharge liquid storage mechanism.
Compared with the prior art, the invention has the advantages that:
The flushing device and method for the radioactive waste liquid transportation system realize effective decontamination of the hose, ensure the safety of operators and maximally reduce the amount of secondary waste liquid. The vehicular dirty liquid collecting container in the low dirty liquid temporary storage mechanism can collect and store the low waste liquid that puts that the decontamination process produced alone, categorised, has realized the wastes material minimizing effectively to guaranteed that the transport capacity does not reduce.
According to the invention, the flushing decontamination mechanism can flush the hose after being discharged, so that effective decontamination of the hose is further realized, and the safety of personnel is ensured. When discharging, the vacuum suction and air compression modes are adopted to wash and decontaminate the hose, the hose is selected according to different conditions, and the application range is wide
Drawings
Fig. 1 is a schematic structural view of a flushing device for a radioactive waste transport system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a vehicle-mounted processing apparatus according to an embodiment of the invention;
FIG. 3 is a schematic diagram of the structure of a receive interface device according to one embodiment of the present invention;
Fig. 4 is a schematic diagram of the structure of a drain interface according to one embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
the meaning of the reference symbols in the drawings is as follows: 1. a vehicle-mounted processing device, 2, a receiving interface device, 3, a discharging interface device, 11, a low-sewage-discharge temporary storage mechanism, 12, a flushing and decontaminating mechanism, 13, a middle-sewage-discharge temporary storage mechanism, 14, a vehicle-mounted niche, 110, a vehicle-mounted sewage collecting container, 111, a sewage-discharge pipeline, 112, a sewage-discharge pipeline, 113, a low-sewage connecting pipeline, 114, a first pressure gauge, 115, a first liquid level gauge, 116, a first pressure control pipeline, 117, a first vacuum exhaust pipeline, 120, a vehicle-mounted flushing agent container, 121, a flushing agent discharge pipeline, 122, a second pressure control pipeline, 123, a first exhaust pipeline, 124, a first flushing agent loading pipeline, 125, a second pressure gauge, 126, a second liquid level gauge, a 201 middle-sewage-discharge storage container, 202, a fixed flushing agent container, 203, a fixed working tank, 204, a second exhaust pipeline, 205, a third exhaust pipeline, 206. the device comprises a middle waste liquid discharge pipeline 207, an overflow pipeline 208, a second detergent loading pipeline 209, a second flushing agent discharge pipeline 210, a third liquid level meter 301, a middle waste liquid discharge storage mechanism 302, a low waste liquid discharge storage mechanism 303, a middle waste liquid discharge receiving pipeline 304, a low waste liquid discharge receiving pipeline 305, a second vacuum exhaust pipeline 306 and a third vacuum exhaust pipeline.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 1 schematically shows a flushing device for a radioactive waste transport system according to one embodiment of the present invention. According to the flushing device for the radioactive waste liquid transportation system, the effective decontamination of the hose is realized, the safety of operators is ensured, and the amount of secondary waste liquid is reduced to the maximum extent. The vehicle-mounted dirty liquid collecting container can be used for separately collecting and storing low-level waste liquid generated in the decontamination process in a classified manner, so that waste minimization is effectively realized, and the transportation capacity is guaranteed not to be reduced.
As shown in fig. 1, the flushing device for a radioactive waste liquid transportation system in this embodiment includes a vehicle-mounted processing device 1, where the vehicle-mounted processing device 1 is disposed on a radioactive waste liquid transportation vehicle, and temporarily stores radioactive waste liquid during transportation. The vehicle-mounted processing device 1 comprises a middle sewage discharge temporary storage mechanism 13, a low sewage discharge temporary storage mechanism 11 and a washing and decontaminating mechanism 12. The middle-discharge sewage temporary storage mechanism 13 is used for storing radioactive sewage in the transportation process, and mainly used for middle-discharge waste liquid; the low-level sewage discharge temporary storage mechanism 11 is used for storing flushing liquid after cleaning the hose, and the flushing liquid after cleaning the hose is used as low-level sewage discharge; the flushing decontamination mechanism 12 is used to store flushing fluid which flushes the hose after discharging the middle and low level waste streams.
The washing device for the radioactive waste liquid transportation system described in this embodiment further includes a receiving interface device 2, and the receiving interface device 2 is used for providing the washing liquid of the radioactive waste liquid and the washing hose to the vehicle-mounted processing device 1. Before the radioactive waste liquid transport vehicle is transported, the vehicle-mounted processing device 1 is connected with the receiving interface device 2 through a hose. The vehicle-mounted processing device 1 receives the radioactive waste liquid of the receiving interface device 2 and stores the radioactive waste liquid in the temporary storage mechanism 13. After the receiving is completed, the receiving interface device 2 provides flushing liquid, and the flushing liquid after the hose is flushed is conveyed into the low-sewage temporary storage mechanism 11.
The flushing device for the radioactive waste liquid transportation system further comprises a discharge interface device 3, wherein the discharge interface device 3 is used for receiving the middle sewage discharge liquid and the low sewage discharge liquid discharged by the vehicle-mounted processing device 1. In the present embodiment, the discharge interface 3 includes a middle effluent liquid storage mechanism 301 and a low effluent liquid storage mechanism 302.
when using the washing unit for radioactive liquid waste transportation system according to this embodiment, before the transportation, after the vehicular processing apparatus 1 receives radioactive dirty liquid and stores the dirty liquid temporary storage mechanism 13 in, receive interface arrangement 2 and pass through the hose connection vehicular processing apparatus 1 to provide the flush fluid and wash the hose, the flush fluid after washing is deposited in low dirty liquid temporary storage mechanism 11. After transportation, the discharge interface device 3 is connected with the vehicle-mounted processing device 1 through a hose, and the middle sewage discharge liquid storage mechanism 301 receives the radioactive sewage liquid discharged by the middle sewage discharge liquid temporary storage mechanism 13; the low sewage discharge liquid storage mechanism 302 receives the washing liquid discharged by the low sewage discharge liquid temporary storage mechanism 11; the rinse soil removal mechanism 12 then rinses the hose and delivers the rinse liquid into the low soil release fluid storage mechanism 302.
In one embodiment, the vehicle mounted processing device 1 further comprises a vehicle mounted niche 14 provided with a joint, as shown in fig. 2. The vehicle-mounted niche 14 receives or discharges radioactive waste liquid through a hose; and the middle sewage discharge temporary storage mechanism 13, the low sewage discharge temporary storage mechanism 11 and the flushing decontamination mechanism 12 are respectively connected with the vehicle-mounted niche 14. The vehicle-mounted processing device 1 is connected to the receiving interface 2 via the vehicle-mounted niche 14 and a hose to receive the radioactive waste liquid or to the discharge interface 3 to discharge the radioactive waste liquid.
In a preferred embodiment, the low effluent buffer storage mechanism 11 includes a vehicle-mounted effluent collection container 110 for collecting the rinse solution flushed through the hose as a low-radioactivity effluent. The vehicle-mounted dirty liquid collecting container 110 is connected with the vehicle-mounted niche 14 through a pipeline. Further, a vehicle-mounted vacuum pump and an air compressor are connected to the vehicle-mounted contaminated liquid collection container 110.
preferably, the pipes of the vehicle-mounted contaminated liquid collecting container 110 connected to the vehicle-mounted niche 14 include a contaminated liquid discharge pipe 111, a contaminated liquid discharge pipe 112, and a low level connection pipe 113. Wherein, the pipeline 111 is arranged into to the decontamination solution connects low connecting tube 113 and vehicular dirty liquid collecting container 110, and the pipeline 112 is arranged into to the decontamination solution connects low connecting tube 113 and vehicular dirty liquid collecting container 110, and decontamination solution discharge pipe 112 and decontamination solution discharge pipeline 111 are parallelly connected. Valves are arranged on the decontamination solution inlet pipeline 111, the decontamination solution outlet pipeline 112 and the low-level connecting pipeline 113. During reception, the dirty liquid inlet pipe 111 is opened, the dirty liquid outlet pipe 112 is closed, and the dirty liquid output from the reception interface 2 flows through the hose, the low-level connection pipe 113, and the dirty liquid inlet pipe 111 into the vehicle-mounted dirty liquid collection container 110. When discharging, the decontamination solution inlet pipe 111 is closed, the decontamination solution outlet pipe 112 is opened, and the low-level decontamination solution enters the discharge interface 3 through the decontamination solution outlet pipe 112 and the low-level connection pipe 113. The bottom end of the decontamination solution discharge pipeline 111 is arranged at the upper part of the vehicle-mounted decontamination solution collection container 110, and the bottom end of the decontamination solution discharge pipeline 112 is arranged at the bottom of the vehicle-mounted decontamination solution collection container 110.
in a preferred embodiment, the vehicle-mounted dirty liquid collecting container 110 is provided with a first pressure gauge 114 and a first liquid level gauge 115. The first pressure gauge 114 is used to measure the pressure in the vehicle-mounted dirty liquid collecting container 110, and the first liquid level gauge 115 is used to measure the liquid level in the vehicle-mounted dirty liquid collecting container 110. By providing the first pressure gauge 114 and the second level gauge 126, a reference is provided for operation.
in this embodiment, the vehicle-mounted contaminated liquid collection container 110 is provided with a first pressure-controlled pipeline 116, and the first pressure-controlled pipeline 116 is connected to an air compressor. And a first vacuum exhaust pipeline 117 is arranged on the vehicle-mounted dirty liquid collecting container 110 and is used for connecting a vehicle-mounted vacuum pump. Valves are arranged on the first pressure control pipeline 116 and the first vacuum exhaust pipeline 117.
when the flushing device for the radioactive waste liquid transportation system according to the present embodiment is used, the valve of the first vacuum exhaust pipeline 117 is opened to communicate with the vacuum pump for vacuum pumping when receiving low level radioactive waste liquid. Vehicle-mounted dirty liquid collecting container 110 forms negative pressure for receiving interface arrangement 2, is favorable to the flush fluid to get into in vehicle-mounted dirty liquid collecting container 110. When the low-level waste liquid is discharged, the valve of the first pressure-controlled pipeline 116 can be opened, pressure is applied to the interior of the vehicle-mounted dirty liquid collecting container 110 through the air compressor, and the low-level waste liquid is discharged under the action of the pressure.
In one embodiment, the rinse and decontamination mechanism 12 includes an onboard rinse container 120, the onboard rinse container 120 being connected to the onboard niche 14 by a rinse discharge conduit 121. The vehicle-mounted flushing agent container 120 is provided with a second pressure-controlled pipeline 122, and an air compressor is connected with the second pressure-controlled pipeline 122. Preferably, a first exhaust pipe 123 connected to the atmosphere is provided on the vehicle-mounted rinse container 120 for pressure relief. A first flushing agent loading conduit 124 is also provided in the vehicle-mounted flushing agent container 120, i.e. an inlet to the vehicle-mounted flushing agent container 120 for connection to an external flushing agent container. When there is less rinse in the in-vehicle rinse container 120, the rinse is replenished through the first rinse loading line 124. In this embodiment, valves are provided on the flushing agent discharge line 121, the first exhale line 123, the second pressure controlled line 122 and the first flushing agent charge line 124. In a preferred embodiment, a second pressure gauge 125 and a second level gauge 126 are provided on the vehicle mounted rinse container 120.
In using the flushing device for a radioactive liquid waste transport system according to the present embodiment, after discharging the middle-level and low-level waste liquids, the hose is flushed by the flushing decontamination mechanism 12. The flushing agent discharge pipe 121 is opened, the second pressure control pipe 122 is opened to communicate with an air compressor, flushing liquid can be discharged through the flushing agent discharge pipe 121 by the pressing of the air compressor, the flushing liquid passes through the hose, the hose is flushed, and finally the flushing liquid enters the discharge interface device 3.
in one embodiment, as shown in fig. 3, the receiving interface 2 includes a radioactive waste liquid storage container 201, and a fixed type flushing agent container 202. The middle waste liquid storage container 201 and the fixed flushing agent container 202 are respectively connected with a fixed working box 203. The stationary work box 203 can be connected to a hose for connecting the vehicle-mounted processing device 1, so that the stationary work box 203 and the vehicle-mounted niche 14 are connected to both ends of the hose during reception, respectively. When the vehicle-mounted processing device 1 receives the radioactive waste liquid, the intermediate waste liquid temporary storage mechanism 13 is communicated with the intermediate waste liquid storage container 201 and receives the radioactive waste liquid. After the receiving is completed, the low-pollution discharge liquid temporary storage mechanism 11 is communicated with the fixed flushing agent container 202 and receives the flushing liquid of the flushing hose.
In a preferred embodiment, the middle waste liquid storage container 201 is connected to an air purification system through a second exhaust conduit 204 and is connected to the stationary working box 203 through a middle waste liquid conduit 206210. The stationary flushing container is connected to the stationary work tank 203 through a second flushing agent discharge pipe 209, and the stationary flushing container is provided with a second detergent loading pipe 208 connected to a water pipe, and a third exhaust pipe 205 connected to the atmosphere. The fixed washing container is also connected with a floor drain system through an overflow pipeline 207, and a liquid level meter is also arranged on the fixed washing container.
In one embodiment, as shown in fig. 4, an exhaust gas treatment device is connected to both the middle effluent liquid storage 301 and the low effluent liquid storage 302 of the discharge interface 3. Preferably, the middle effluent storage mechanism 301 is connected to a joint through a middle effluent receiving pipe 303, the low effluent storage mechanism 302 is connected to a joint through a low effluent receiving pipe 304, or the middle effluent receiving pipe 303 is connected to a joint indirectly, and the joint can be connected to a hose. In a preferred embodiment, the middle effluent storage mechanism 301 is connected to the exhaust gas treatment device through a second vacuum exhaust pipe 305, and the low effluent storage mechanism 302 is connected to the exhaust gas treatment device through a third vacuum exhaust pipe 306.
According to another aspect of the invention, a method of decontamination is also presented. The method comprises two parts: a process of receiving the radioactive liquid waste by the vehicle-mounted processing apparatus 1 and a process of discharging the radioactive liquid waste by the vehicle-mounted processing apparatus 1.
The process of receiving the radioactive liquid waste by the vehicle-mounted processing device 1 includes the following steps.
And A1, communicating the vehicle-mounted processing device 1 with the receiving interface device 2.
In step a2, the temporary sewage discharge solution storage mechanism 13 receives the radioactive waste solution from the receiving interface device 2.
step a3, after the receiving is completed, the receiving interface device 2 provides a flushing liquid flushing hose, and receives the flushing liquid through the low blowdown liquid temporary storage mechanism 11.
The process of discharging radioactive liquid waste by the vehicle-mounted processing apparatus 1 includes the following steps.
And step B1, communicating the vehicle-mounted processing device 1 with the discharge interface device 3.
Step B2, discharging the radioactive waste liquid in the middle effluent liquid temporary storage mechanism 13 to the middle effluent liquid storage mechanism 301, and discharging the flushing liquid in the low effluent liquid temporary storage mechanism 11 to the low effluent liquid storage mechanism 302.
And step B3, after the drainage is finished, flushing the hose through the flushing decontamination mechanism 12, and conveying the flushing liquid into the low decontamination liquid storage mechanism 302.
By the method according to the embodiment, the hose can be flushed both during receiving and discharging, and the flushed flushing liquid becomes low-level waste liquid due to contamination of radioactive waste liquid in the hose. The low-level radioactive waste liquid and the medium-level radioactive waste liquid are stored separately, and the low-level radioactive waste liquid is stored in the low-level radioactive waste liquid storage mechanism 302, so that the requirement of minimizing waste is met. And does not occupy the space of the vehicle-mounted shielding tube.
In a preferred embodiment, the onboard disposal device 1 receives the radioactive liquid waste in the following manner:
step A1, the vehicle-mounted niche 14 and the fixed work box 203 are respectively butted at two ends of the hose, and the quick butt valves at the two ends of the hose are checked to be in an open state.
Step a2, the valve of the middle waste liquid discharge pipe 206210 of the middle waste liquid discharge storage container 201 is opened, and the middle waste liquid discharge temporary storage mechanism 13 and the vehicle-mounted niche 14 are communicated, and the middle waste liquid discharge temporary storage mechanism 13 receives the radioactive waste liquid of the receiving interface device 2.
Step A3, manually open the valve on the second detergent loading pipe 208, observe that the second level gauge 126 on the upper part of the container indicates a small refill of the fixed detergent container, the first refill being about half of the total height. Meanwhile, the first vacuum exhaling and exhausting pipeline 117 of the vehicle-mounted processing device 1 is opened, valves on other pipelines are closed, negative pressure is pumped out of the vehicle-mounted sewage collecting container 110 of the pump through vehicle-mounted vacuum, and when the negative pressure in the vehicle-mounted sewage collecting container 110 reaches a set value, the negative pressure pumping operation is stopped.
And (3) opening a valve on the second flushing agent discharge pipeline 209, a valve on the decontamination solution discharge pipeline 111 and a valve on the low-level connecting pipeline 113, and enabling the flushing solution to enter the vehicle-mounted decontamination solution collection container through the fixed working tank 203, the hose, the valve in the vehicle-mounted niche 14, the valve on the low-level connecting pipeline 113 and the decontamination solution discharge pipeline 111. After the fixed type washing container is emptied, air enters the vehicle-mounted decontamination liquid collecting container along the route, the pressure in the vehicle-mounted decontamination liquid collecting container rises rapidly, and when the pressure rises to a set value, the valve is closed to finish the first washing.
And (4) measuring the surface dose level of the hose by using a long-rod type dose rate meter, and if the surface dose level does not meet the radiation protection requirement of direct operation of personnel, repeating the step A3 until the requirement is met, and gradually reducing the water replenishing volume of the fixed type washing container.
in a preferred embodiment, in step B2, during the process of discharging the rinsing liquid in the low effluent liquid temporary storage mechanism 11 to the low effluent liquid storage mechanism 302, there are two ways to discharge the low effluent liquid.
first, by increasing the pressure in the vehicle-mounted dirty liquid collecting container 110, the low-level dirty liquid is pushed into the low-level dirty liquid storage mechanism 302 by the pressure. The process of discharging the low-level effluent in this manner is as follows.
The low-level effluent liquid storage mechanism 302 is a normal-pressure container, the valves on the first pressure control pipeline 116, the effluent liquid discharge pipeline 112, the low-level connecting pipeline 113, the low-level effluent liquid receiving pipeline 304 and the third vacuum exhaust pipeline 306 are opened, the other valves on the vehicle-mounted effluent liquid collecting container 110 are closed, the vehicle-mounted effluent liquid collecting container 110 is pressurized by using compressed air, and the low-level effluent liquid is pressed into the low-level effluent liquid storage mechanism 302 along the effluent liquid discharge pipeline 112, the low-level connecting pipeline 113 and the low-level effluent liquid receiving pipeline 304 under the action of pressure.
second, the low effluent liquid in the vehicle-mounted effluent liquid collection container 110 is sucked into the low effluent liquid storage mechanism 302 by sucking negative pressure in the low effluent liquid storage mechanism 302. The process of discharging the low-level effluent in this manner is as follows.
The low-pollution discharge liquid storage mechanism 302 is a liquid pumping device, a valve on the third vacuum exhaling and discharging pipeline 306 is opened, a vacuum system is utilized to pump negative pressure to the low-pollution discharge liquid storage mechanism 302, the pollution discharge liquid discharge pipeline 112, the low-pollution discharge connecting pipeline 113 and the low-pollution discharge liquid receiving pipeline 304 are opened, and low-pollution discharge liquid is sucked into the low-pollution discharge liquid storage mechanism 302 along the pollution discharge liquid discharge pipeline 112, the low-pollution discharge connecting pipeline 113 and the low-pollution discharge liquid receiving pipeline 304 under the action of the negative pressure.
In one embodiment, there are two ways to flush during the process of delivering the flushing liquid to the low level dirty liquid storage mechanism 302 by the flushing and decontamination mechanism 12.
First, the pressure is increased by the vehicle mounted rinse container 120, which pushes the rinse solution through a hose into the low blowdown liquid storage mechanism 302.
The low-pollution discharge liquid storage mechanism 302 is a normal-pressure container, valves on the second pressure air pipeline, the flushing agent discharge pipeline 121, the low-pollution discharge liquid receiving pipeline 304 and the third vacuum exhaling pipeline 306 are opened, other valves on the vehicle-mounted flushing agent container 120 are closed, the vehicle-mounted flushing agent container 120 is pressurized by using compressed air, flushing liquid is pressed into a hose along the flushing agent discharge pipeline 121 under the action of pressure, and the flushing liquid is pressed into the low-pollution discharge liquid storage mechanism 302 through the low-pollution discharge liquid receiving pipeline 304 after the hose is flushed.
Second, the rinse liquid in the vehicle-mounted rinse agent container 120 is sucked into the low effluent liquid storage mechanism 302 through the hose by sucking the negative pressure in the low effluent liquid storage mechanism 302.
Low dirty liquid storage mechanism 302 of releasing is the liquid raising ware, opens the valve on the third vacuum exhales the row pipeline 306, utilizes vacuum system to take out the negative pressure to low dirty liquid storage mechanism 302, opens flushing agent discharge tube 121, low waste liquid receiving tube 304 of releasing, with the flush fluid along removing flushing agent discharge tube 121 entering hose under the effect of negative pressure, in the low dirty liquid storage mechanism 302 of releasing is inhaled through low waste liquid receiving tube 304 behind the flushing hose.
In this embodiment, the hose is mainly cleaned and decontaminated by vacuum suction and pressure air in steps B2 and B3, and the method is selected according to different situations, and has a wide application range. In the embodiment, the method realizes effective decontamination of the hose, ensures the safety of operators and maximally reduces the amount of secondary waste liquid. The vehicle-mounted dirty liquid collecting container 110 can separately collect and store low-level waste liquid generated in the decontamination process in a classified manner, effectively minimizes waste, and ensures that the transport capacity is not reduced.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (14)
1. A washing device for a radioactive waste transport system, comprising:
The vehicle-mounted processing device (1), the vehicle-mounted processing device (1) comprises a middle sewage discharge temporary storage mechanism (13) for storing radioactive sewage, a low sewage discharge temporary storage mechanism (11) for storing flushing liquid after a flushing hose is flushed, and a flushing and decontaminating mechanism (12) for storing the flushing liquid;
a receiving interface (2) configured to be able to provide a flushing liquid for flushing the hose; and
A discharge interface device (3) including a medium-drain liquid storage mechanism (301) and a low-drain liquid storage mechanism (302);
before transportation, the vehicle-mounted processing device (1) receives radioactive dirty liquid and stores the radioactive dirty liquid in the temporary storage mechanism (13) of the dirty liquid, the receiving interface device (2) is connected with the vehicle-mounted processing device (1) through a hose and provides flushing liquid to flush the hose, and the flushed flushing liquid is stored in the temporary storage mechanism (11) of the dirty liquid;
After transportation, the discharge interface device (3) is connected with the vehicle-mounted processing device (1) through a hose, and the middle sewage discharge liquid storage mechanism (301) receives the radioactive sewage liquid discharged by the middle sewage discharge liquid temporary storage mechanism (13); the low-pollution discharge liquid storage mechanism (302) receives the washing liquid discharged by the low-pollution discharge liquid temporary storage mechanism (11); the flushing decontamination mechanism (12) then flushes the hose and delivers the flushing fluid into the low decontamination solution storage mechanism (302).
2. Flushing device for radioactive waste liquid transport systems according to claim 1, characterized in that the onboard disposal device (1) further comprises an onboard niche (14) provided with a connector, which onboard niche (14) receives or discharges radioactive waste liquid through a hose; and the middle sewage discharge temporary storage mechanism (13), the low sewage discharge temporary storage mechanism (11) and the flushing decontamination mechanism (12) are respectively connected with the vehicle-mounted niche (14).
3. the flushing device for radioactive waste liquid transport systems according to claim 2, characterized in that the low level effluent temporary storage means (11) comprises a vehicle-mounted effluent collection container (110), the vehicle-mounted effluent collection container (110) being connected to the vehicle-mounted niche (14) by a pipeline; and the vehicle-mounted dirty liquid collecting container (110) is connected with a vehicle-mounted vacuum pump and an air compressor.
4. The flusher apparatus for radioactive spent liquid transport system according to claim 3, wherein a first pressure gauge (114) and a first liquid level gauge (115) are provided on the vehicle-mounted contaminated liquid collecting container (110).
5. The flushing device for radioactive waste transport systems according to claim 4, characterized in that the vehicle-mounted waste collection container (110) is provided with a first pressure-controlled pipeline (116) connected with an air compressor and a first vacuum exhaust pipeline (117) connected with a vacuum pump.
6. The flushing device for radioactive waste transport systems according to any of claims 2 to 5, characterized in that the flushing decontamination means (12) comprises an onboard flushing agent container (120), the onboard flushing agent container (120) being connected to the onboard niche (14) by a flushing agent discharge conduit (121), and the onboard flushing agent container (120) being connected to an air compressor.
7. The flusher apparatus for radioactive spent liquid transport system according to claim 6, wherein a second pressure gauge (125) and a second liquid level gauge (126) are provided on the vehicle-mounted flusher container (120), and a first drain pipe capable of communicating with the external atmosphere and a second pressure-controlled pipe (122) connected to an air compressor are provided on the vehicle-mounted flusher container (120).
8. the flushing device for radioactive waste transport systems according to any of claims 2 to 5, characterized in that the receiving interface device (2) comprises a radioactive waste storage container (201), and a stationary flushing agent container (202); the middle waste liquid storage container (201) and the fixed flushing agent container (202) are respectively connected with a fixed working box (203);
the fixed working box (203) can be connected with a hose to be further connected with the vehicle-mounted processing device (1), and when the vehicle-mounted processing device (1) receives radioactive waste liquid, the intermediate waste liquid temporary storage mechanism (13) is communicated with the intermediate waste liquid storage container (201) and receives the radioactive waste liquid; after the receiving is finished, the low-pollution liquid temporary storage mechanism (11) is communicated with the fixed flushing agent container (202) and receives flushing liquid of the flushing hose.
9. The flusher for radioactive spent liquid transport systems according to claim 8, wherein an air purification system is connected to the radioactive spent liquid storage container (201) through a second exhaust pipe (204); the fixed washing container is provided with a liquid level meter, an overflow pipeline (207) connected with a floor drain system and a second detergent loading pipeline (208) connected with a water pipe.
10. the flushing device for a radioactive waste liquid transportation system according to claim 6 or 7, wherein a second vacuum exhaust pipeline (305) connected with an exhaust gas treatment device is arranged on the middle radioactive waste liquid storage mechanism (301), and a third vacuum exhaust pipeline (306) connected with the exhaust gas treatment device is arranged on the low radioactive waste liquid storage mechanism (302).
11. A decontamination method using a washing device for a radioactive waste transport system according to any one of claims 1 to 10, characterized by comprising:
In the process of receiving radioactive waste liquid by the vehicle-mounted processing device (1),
step A1, communicating the vehicle-mounted processing device (1) with the receiving interface device (2);
Step A2, the temporary storage mechanism (13) of the middle sewage discharge liquid receives the radioactive waste liquid of the receiving interface device (2);
Step A3, after the receiving is finished, the receiving interface device (2) provides a flushing liquid flushing hose and receives the flushing liquid through a low-sewage temporary storage mechanism (11);
in the process of discharging radioactive waste liquid by the vehicle-mounted processing device (1),
Step B1, communicating the vehicle-mounted processing device (1) with the discharge interface device (3),
Step B2, discharging the radioactive waste liquid in the middle sewage discharge liquid temporary storage mechanism (13) into a middle sewage discharge liquid storage mechanism (301), and discharging the flushing liquid in the low sewage discharge liquid temporary storage mechanism (11) into a low sewage discharge liquid storage mechanism (302);
and step B3, after the drainage is finished, flushing the hose through the flushing decontamination mechanism (12), and conveying the flushing liquid into the low-level decontamination liquid storage mechanism (302).
12. The method of claim 11 wherein after step A3 is completed, the level of radioactivity on the surface of the hose is measured using a long rod dose meter, and if the level of radioactivity does not meet the radiation protection requirements for direct human manipulation, the steps of step A3 are repeated until the requirements are met.
13. The method according to claim 11 or 12, wherein during the process of discharging the flushing liquid in the low effluent liquid temporary storage mechanism (11) to the low effluent liquid storage mechanism (302), the low effluent liquid is pushed into the low effluent liquid storage mechanism (302) by pressure by increasing the pressure in the vehicle-mounted effluent liquid collection container (110); or the low-level sewage liquid in the vehicle-mounted sewage liquid collecting container (110) is sucked into the low-level sewage liquid storage mechanism (302) by pumping negative pressure in the low-level sewage liquid storage mechanism (302).
14. A method according to any one of claims 11 to 13, characterised in that during the delivery of the rinse liquid to the low effluent storage means (302) by the rinse and decontamination means (12), the pressure is increased by the on-board rinse agent container (120) and the rinse liquid is pushed by the pressure through a hose into the low effluent storage means (302); or the flushing liquid in the vehicle-mounted flushing agent container (120) is sucked into the low-sewage liquid storage mechanism (302) through the hose by pumping negative pressure in the low-sewage liquid storage mechanism (302).
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| CN201910677964.2A CN110576004B (en) | 2019-07-25 | 2019-07-25 | Flushing device and method for radioactive waste liquid transportation system |
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| CN201910677964.2A CN110576004B (en) | 2019-07-25 | 2019-07-25 | Flushing device and method for radioactive waste liquid transportation system |
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Cited By (1)
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