CN211603561U

CN211603561U - Submersible probe and radioactive wastewater monitoring device

Info

Publication number: CN211603561U
Application number: CN201921989395.7U
Authority: CN
Inventors: 黄红娟
Original assignee: Jiangsu Lanchuang Intelligent Technology Co ltd
Current assignee: Jiangsu Lanchuang Intelligent Technology Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-09-29
Anticipated expiration: 2029-11-18

Abstract

The utility model discloses a dive formula probe and radioactive waste water monitoring devices thereof: the radioactive sewage treatment device comprises a decay tank, wherein radioactive sewage is arranged in the decay tank, the decay tank also comprises a shielding box which can be lifted upwards, a cylindrical isolation monitoring bin is arranged in the shielding box, and the isolation monitoring bin is communicated with the decay tank through a plurality of communicating holes; the isolation monitoring bin is internally provided with a specific activity probe, the outside of the specific activity probe is hermetically covered with a sealed shell, and the sealed shell can penetrate through radioactive rays. The submersible probe is placed in sewage, the shielding box shields and isolates the interference of the sewage outside the monitoring bin on the monitoring result, and then the specific activity probe is used for carrying out radioactive monitoring on sample water in the isolated monitoring bin, so that the specific activity probe can monitor the sewage in the decay tank more accurately; meanwhile, the process that the radioactive wastewater is transported away from the decay tank by the pump body and the pipeline does not exist in the wastewater monitoring mode, and the possibility of secondary pollution of the radioactive wastewater during monitoring is reduced.

Description

Submersible probe and radioactive wastewater monitoring device

Technical Field

The utility model relates to an ionizing radiation monitoring technology field especially relates to a dive formula probe and radioactive waste water monitoring devices.

Background

The waste liquid produced in the practice process of the nuclear medicine department mainly comprises excrement of patients and examinees, residual liquid of radioactive drugs, washing liquid of radioactive utensils and radioactive workers. Because of its high activity, it is generally disposed of by three ways of classified storage, dilution discharge and storage decay.

Dilution and discharge of radioactive wastewater in nuclear medicine department may enter municipal pipelines, harm to the health of residents and the environment is always the key point of supervision of environmental protection departments. The maximum allowable emission concentration of total beta radioactivity is 10Bq/L in GB 8978. When the radioactive wastewater in the nuclear medicine department is discharged, the radioactive wastewater in the hospital is ensured to be lower than the discharge limit value, and the radioactive wastewater can be discharged when meeting the discharge requirement. At present, a decay tank is built in nuclear medicine science, and non-radioactive sewage treatment is carried out when the radioactivity decays to a level below a decomposition control level. Generally, medical radioactive nuclide decays in a decay pool for about 10 half-lives to reach the solution control level. However, with the progress of medical technology and the increase of the use frequency of medical radioactive nuclide, the existing decay tank in a hospital always works in an overload mode, and sewage cannot be discharged in time.

Therefore, it is highly desirable to build an online radioactive wastewater radiation monitoring system for monitoring the activity level of radioactive wastewater.

At present, radioactive wastewater monitoring mainly comprises two modes, namely sampling analysis and on-line monitoring, wherein the sampling analysis firstly needs to be carried out in a radioactive wastewater pool, the obtained sample is transported back to a laboratory, and the sample treatment and measurement are carried out in the laboratory. The method has mature and reliable technology and a set of technical standards and specifications, but the method has the defects of long sampling period, poor sample representativeness, complex operation and the like, and is not suitable for radioactive continuous monitoring of a decay pool.

The existing water body radioactivity automatic monitoring and measuring device of the online monitoring system comprises a lead chamber, a monitoring container (a marlin cup), a detector, a water inlet and a water outlet, wherein radioactive wastewater in a decay pool is pumped into the water inlet pipe through a water pump and flows into the monitoring container, the radioactive wastewater is monitored by the detector in real time in the monitoring container, and finally the radioactive wastewater is discharged into the decay pool through an outlet. And the data detected by the detector is uploaded to the data processing unit by the data transmission unit for processing. As the radioactive waste water is pumped into the detection device from the decay tank by the water pump and transported by the pipeline, the possibility that the radioactive waste water leaks from the pipeline interface exists in the process, and secondary pollution is caused to the environment or operators.

Also some are direct to put into the monitoring with the probe in the decay pond, through the radioactive quantity in the whole decay pond of probe monitoring, because the probe shared position is very little in the decay pond like this, the response scope of probe is little, makes the radioactive quantity of the whole decay pond of probe monitoring inaccurate enough like this.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects existing in the prior art, the utility model provides a submersible probe and radioactive wastewater monitoring device which can solve the problems.

The technical scheme is as follows: to achieve the above object, the present invention provides a submersible probe: the radioactive sewage treatment device comprises a decay tank, wherein radioactive sewage is arranged in the decay tank, the decay tank also comprises a shielding box which can be lifted upwards, a cylindrical isolation monitoring bin is arranged in the shielding box, and the isolation monitoring bin is communicated with the decay tank through a plurality of communicating holes; a specific activity probe is arranged in the isolation monitoring bin, a sealed shell is hermetically covered outside the specific activity probe, and the sealed shell can penetrate through radioactive rays; each communicating hole is provided with a filter screen; radioactive sewage enters into the isolation monitoring storehouse through the intercommunicating pore in the decay pond to make the specific activity probe monitor the radioactive sewage in the isolation monitoring storehouse, and shield the interference of the radioactive sewage outside the isolation monitoring storehouse through the shielding box, thereby make the specific activity probe monitoring structure more accurate.

Furthermore, each communication hole is arranged on the side wall of the wall body of the shielding box, and the number of the communication holes at least comprises 4, wherein two communication holes are arranged near the bottom of the shielding box, and the other two communication holes are arranged near the top of the shielding box; each communicating hole is in a circular hole shape.

Furthermore, the shielding box is made of lead metal, and the closed shell is made of plastic.

The shielding box comprises a shielding box body and a shielding cover body, and the shielding box body is cylindrical; the shielding cover body is matched with the opening in the top of the shielding box body, and the shielding cover body is connected and arranged at the opening in the top of the shielding box body in a separating mode.

Furthermore, two buckles are symmetrically arranged on the side wall of the shielding box body, and the shielding box body is connected with the shielding cover body through the buckles.

Furthermore, a probe interface is arranged on the shielding cover body, a connecting hole is formed in the probe interface, the specific activity probe is connected with a cable, and the cable penetrates through the connecting hole from the isolation monitoring bin and is connected with an external upper computer.

Furthermore, the shielding cover body also comprises a protective sleeve, one end of the protective sleeve is arranged in the isolation monitoring bin, and the other end of the protective sleeve penetrates out of the shielding box through the connecting hole; the cable is positioned in the protective sleeve; the protective sheath is the PVC material.

A radioactive wastewater monitoring device comprises an upper computer and the submersible probe, wherein a specific activity probe in the submersible probe is in communication connection with the upper computer.

Furthermore, the device further comprises an implanted probe, wherein the implanted probe comprises a fixing ring and a radioactive intensity probe arranged in the fixing ring, the radioactive intensity probe is in communication connection with the upper computer, and the fixing ring is fixed on the wastewater drainage pipeline.

Has the advantages that: the utility model discloses a submersible probe and radioactive wastewater monitoring device, put into sewage this submersible probe, the shielding box shields the interference to the monitoring result of the outside sewage of isolation monitoring storehouse, sewage enters into the isolation monitoring storehouse through the intercommunicating pore and the filter screen and forms quantitative sample water, because the isolation monitoring storehouse is provided with the specific activity probe, the specific activity probe carries out the radioactive monitoring to the sample water in the isolation monitoring storehouse, thus the specific activity probe monitors the sewage in the decay pond more accurately; meanwhile, the process that the radioactive wastewater is transported away from the decay tank by the pump body and the pipeline does not exist in the wastewater monitoring mode, and the possibility of secondary pollution of the radioactive wastewater during monitoring is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the submersible probe according to the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The present invention will be further described with reference to the accompanying drawings.

A submersible probe as shown in figure 1: including the decay pond, be radioactive sewage in the decay pond, still including the shielded cell 1 that can upwards mention in the decay pond, shielded cell 1 is the lead metal material, and the radioactive ray in the shielded cell 1 that lead metal made can shield outside sewage avoids external radioactive sewage to disturb the monitoring in the shielded cell 1. A cylindrical isolation monitoring bin 2 is arranged in the shielding box 1, and the isolation monitoring bin 2 is communicated with the decay tank through a plurality of communication holes 3; radioactive sewage enters into isolation monitoring storehouse 2 through intercommunicating pore 3 in the decay pond, isolation monitoring storehouse 2 forms the quantitative appearance water container of monitoring, thereby make the radioactive sewage who enters into isolation monitoring storehouse 2 become monitoring appearance water, thereby make the sample of monitoring the radioactivity sewage in appearance water as the decay pond, because this monitoring mode is directly to take a sample and direct monitoring in the decay pond, it is more convenient simple to compare in collecting the waste water sample back laboratory monitoring, also make monitoring appearance water have the ageing simultaneously, and avoid appearance water to cause secondary pollution in save and transportation. Keep apart and be provided with specific activity probe 4 in the monitoring storehouse 2, monitor the reflection capacity of appearance water in the monitoring storehouse 2 through specific activity probe detection, compare like this in directly putting into the decay pond with specific activity probe, the required monitoring radioactive sewage's of specific activity probe among this monitoring mode is small, monitoring range is little, therefore its monitoring result is more accurate. The outside sealed cladding of specific activity probe 4 has airtight casing 5, has sealed rubber ring between specific activity probe 4 and airtight casing 5 to guarantee through airtight casing 5 that specific activity probe 4 can not be soaked the pollution. The closed shell 5 is made of plastic materials, such as polypropylene plastics and PVC plastics, the closed shell 5 can transmit radioactive rays due to the low-density materials, and the closed shell 5 has the functions of sealing and water proofing.

Each all be provided with filter screen 6 on the intercommunicating pore 3, filter screen 6 can filter the impurity in the sewage, avoids large granule impurity to enter into and keeps apart the monitoring that influences specific activity probe 4 in monitoring storehouse 2.

Each of the communication holes 3 is disposed on a sidewall of a wall body of the shielding box 1, and the number of the communication holes 3 is at least 4, and may be plural according to needs, which is not limited herein. Two of the communication holes 3 are arranged near the bottom of the shielding box 1, and the other two communication holes 3 are arranged near the top of the shielding box 1; each communication hole 3 is in a circular hole shape; when putting into radioactive sewage with shielded cell 1 gradually like this, intake through lower part intercommunicating pore 3, and the air in the monitoring storehouse 2 is kept apart to the outside discharge of top intercommunicating pore 3 to the guarantee sewage can enter into smoothly keeps apart in the monitoring storehouse 2.

The shielding box 1 comprises a shielding box body 11 and a shielding cover body 12, and the shielding box body 11 is cylindrical; the open looks adaptation in shielding lid 12 and the 11 tops of shielding box sets up, shielding lid 12 disconnect-type is connected the setting and is being in the open top of shielding box 12, and the later stage of being convenient for like this is maintained and is changed the specific activity probe 4 in isolation monitoring storehouse 2.

Two buckles are symmetrically arranged on the side wall of the shielding box body 11, and the shielding box body 11 is connected with the shielding cover body 12 through the buckles.

The shielding cover 12 is provided with a probe interface 7, and preferably, the probe interface 2 includes a square probe interface. The probe interface 7 department is provided with connecting hole 71, specific activity probe 4 is connected with the cable, the cable passes connecting hole 71 from keeping apart in the monitoring storehouse 2 to be connected with external host computer, transmit the data signal that specific activity probe 4 detected for external host computer through the cable.

The shielding cover 12 further includes a protective sleeve 8, and the protective sleeve 8 is made of PVC material. One end of the protective sleeve 8 is arranged in the isolation monitoring bin 2, and the other end of the protective sleeve penetrates out of the shielding box 1 through the connecting hole 71; the cable is located in the protective sheath 8, thereby protecting the cable, and the protective sheath also seals the connection hole 71.

The present embodiments provide a submersible probe: the specific activity probe 2 is arranged in the shielding box 1 and is connected to an upper computer through a cable, the shielding box 1 is provided with a communication hole 3 and a filter screen 6, when the submersible type probe is arranged in sewage, the sewage enters the isolation monitoring bin 2 in the shielding box through the communication hole 3 and the filter screen 6, the specific activity of radioactive wastewater can be monitored in real time through the specific activity probe 4 and is transmitted to the upper computer through the cable, and impurities in the sewage can be filtered due to the arrangement of the filter screen 6; like this monitoring mode is through directly carrying out sample detection in the sewage for the monitoring result is more accurate, does not have the process that pump body and pipeline transported radioactive waste water from decay pond simultaneously, has reduced the possibility that secondary pollution appears in radioactive waste water when the monitoring. In addition, the shielding box body 11 and the shielding cover body 12 are connected in a separable way, so that later maintenance and replacement are facilitated.

As another embodiment of the utility model, a radioactive waste water monitoring device is provided, wherein, radioactive waste water monitoring device includes host computer and the aforesaid dive formula probe, specific activity probe 4 in the dive formula probe with host computer communication connection.

Specifically, in order to prevent the radioactive substances in the decay pond from being unevenly distributed, the radioactive wastewater monitoring device further comprises an implanted probe, wherein the implanted probe comprises a fixing ring and a radioactive intensity probe arranged in the fixing ring, the radioactive intensity probe is in communication connection with the upper computer, and the fixing ring is fixed on a decay pond wastewater drainage pipeline.

The operation principle of the radioactive waste water monitoring device provided in this embodiment will be described in detail below.

In the decay tank, radioactive wastewater can be stored in the decay tank for a period of time, and can be discharged after the radioactivity of a water body reaches the standard, the submersible probe in the radioactive wastewater monitoring device provided by the embodiment works in the decay tank, the radioactive wastewater to be detected enters the shielding box 1 through the four round holes, the specific activity of the radioactive wastewater can be monitored in real time by the specific activity probe, data are transmitted to an upper computer for analysis, once the radioactivity of the radioactive wastewater reaches the standard, an operator can discharge the radioactive wastewater, the radioactive wastewater in the shielding box 1 can be discharged through the communication holes 3, during the discharge process, the radioactive wastewater can partially exceed the standard due to uneven distribution of radioactive substances in the tank, the probe can detect the situation and is linked with a decay tank drainage valve through data transmission to stop the drainage valve, and the radioactive wastewater can be discharged continuously until the radioactivity of the radioactive wastewater reaches the standard again. In whole process, shielding box 1 plays the effect of shielding external radiation influence, and filter screen 6 can filter the impurity in the decay pond to ensure the accuracy reliable of data.

It can be understood that, in this embodiment, the radioactive intensity probe is arranged on the wastewater drainage pipeline, and can be linked with the valve for automatic drainage, so that the manual operation steps are reduced.

Preferably, the radioactivity intensity probe comprises a specific activity probe.

Preferably, the upper computer may adopt an online radioactive source monitoring system, for example, an online radioactive source monitoring system of the morning environmental protection company.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A submersible probe, comprising: the radioactive sewage treatment device comprises a decay tank, wherein radioactive sewage is arranged in the decay tank, the decay tank also comprises a shielding box (1) which can be lifted upwards, a cylindrical isolation monitoring bin (2) is arranged in the shielding box (1), and the isolation monitoring bin (2) is communicated with the decay tank through a plurality of communicating holes (3); a specific activity probe (4) is arranged in the isolation monitoring bin (2), a closed shell (5) is hermetically covered outside the specific activity probe (4), and the closed shell (5) can transmit radioactive rays;

each communicating hole (3) is provided with a filter screen (6).

2. A submersible probe according to claim 1 wherein: each communication hole (3) is arranged on the side wall of the wall body of the shielding box (1), the number of the communication holes (3) is at least 4, two of the communication holes (3) are arranged at the bottom of the shielding box (1), and the other two communication holes (3) are arranged at the top of the shielding box (1); each communication hole (3) is in a circular hole shape.

3. A submersible probe according to claim 2, wherein: the shielding box (1) is made of lead metal, and the closed shell (5) is made of plastic.

4. A submersible probe according to claim 3 wherein: the shielding box (1) comprises a shielding box body (11) and a shielding cover body (12), and the shielding box body (11) is cylindrical in shape; the shielding cover body (12) is matched with the opening of the top of the shielding box body (11), and the shielding cover body (12) is connected and arranged at the opening of the top of the shielding box body (11) in a separating mode.

5. A submersible probe according to claim 4, wherein: the side wall of the shielding box body (11) is symmetrically provided with two buckles, and the shielding box body (11) is connected with the shielding cover body (12) through the buckles.

6. A submersible probe according to claim 5, wherein: be provided with probe interface (7) on shielding lid (12), probe interface (7) department is provided with connecting hole (71), specific activity probe (4) are connected with the cable, the cable passes connecting hole (71) from keeping apart in monitoring storehouse (2) to be connected with external host computer.

7. A submersible probe according to claim 6, wherein: the shielding cover body (12) further comprises a protective sleeve (8), one end of the protective sleeve (8) is arranged in the isolation monitoring bin (2), and the other end of the protective sleeve (8) penetrates out of the shielding box (1) through a connecting hole (71); the cable is positioned in the protective sleeve (8); the protective sleeve (8) is made of PVC material.

8. A radioactive waste water monitoring device which is characterized in that: comprising an upper computer and a submersible probe according to any one of claims 1 to 7, wherein the specific activity probe (4) is in communicative connection with the upper computer.

9. The radioactive waste water monitoring apparatus as claimed in claim 8, wherein: still include implantable probe, implantable probe includes solid fixed ring and sets up the radioactive intensity probe in the solid fixed ring, radioactive intensity probe with host computer communication connection, gu fixed ring fixes on waste water drainage pipe.