1. The utility model provides a drying device in radioactive liquid waste drying bucket which characterized in that includes: mounting panel, waveguide, magnetron, present can mouthful and microwave radiation cover, the microwave radiation cover with mounting panel fixed connection, it sets up to present can the mouth the microwave radiation covers in, the magnetron sets up outside the microwave radiation cover, present can the mouth to pass through the waveguide with the magnetron is connected, the bottom surface of microwave radiation cover is provided with circular trompil, last inlet, gas outlet and the gas vent of being provided with of microwave radiation cover.

2. The radioactive liquid waste drying barrel internal drying device of claim 1, further comprising a microwave power supply and a water tank, wherein the microwave power supply is arranged in the water tank, and a voltage output end of the microwave power supply is electrically connected with a voltage input end of the magnetron.

3. The radioactive liquid waste drying barrel internal drying device of claim 2, wherein the lower side surface of the mounting plate is in sealing fit with the barrel opening of the radioactive liquid waste drying barrel, the mounting plate is provided with a circular through hole corresponding to the circular opening of the microwave radiation cover, the diameter of the circular opening of the microwave radiation cover is equal to the diameter of the circular through hole, and the diameter of the circular through hole is not larger than the diameter of the barrel opening of the radioactive liquid waste drying barrel.

4. The drying device in radioactive waste liquid drying barrel according to claim 3, further comprising a protective cover, wherein the protective cover is a box body with a bottom surface removed, the lower end of the protective cover is fixedly connected with the upper side surface of the mounting plate, the microwave radiation cover is arranged in the protective cover, the magnetron is arranged outside the protective cover, and the circular through hole is located inside the protective cover.

5. The radioactive liquid waste drying barrel internal drying device according to claim 4, wherein the protective cover is provided with an exit hole, the outer end of the waveguide passes through the exit hole to be connected with the magnetron, and the outer side surface of the waveguide is fixedly connected with the exit hole in a sealing manner;

the microwave protection cover is provided with a penetration hole, the outer end of the energy feedback port penetrates through the penetration hole to be connected with the inner end of the waveguide, the outer side face of the energy feedback port is fixedly connected with the inner side face of the penetration hole in a sealing mode, and the inner end of the waveguide is fixedly connected with the outer side face of the microwave protection cover.

6. The drying device in the radioactive waste liquid drying barrel according to claim 5, wherein the number of the magnetrons is multiple, the magnetrons comprise side magnetrons and top magnetrons, the side magnetrons are fixedly connected with the side surface of the protective cover, and the top magnetrons are fixedly connected with the upper side surface of the protective cover;

the number of the waveguides and the energy feedback ports is multiple, and the waveguides and the energy feedback ports are arranged corresponding to the magnetron.

7. The radioactive liquid waste drying barrel internal drying device of claim 6, wherein all the energy feed ports are additionally provided with mica sheets.

8. The drying device in radioactive waste liquid drying barrel according to claim 6, further comprising a temperature sensor, a liquid level meter and a pressure sensor, wherein the temperature sensor, the liquid level meter and the pressure sensor are all fixedly arranged on the inner side surface of the microwave radiation cover, and a plurality of pipeline instrument ports for the signal lines of the temperature sensor, the liquid level meter and the pressure sensor to pass through are arranged on the protective cover.

9. The drying device in the radioactive liquid waste drying barrel according to claim 6, further comprising a safety valve and a pressure relief pipe, wherein an inner end of the pressure relief pipe is communicated with the inside of the microwave radiation cover, and an outer end of the pressure relief pipe passes through the microwave radiation cover and the protective cover to be fixedly connected with the safety valve.

10. A waste liquid drying barrel, which comprises the drying device, the barrel body and the barrel cover as claimed in any one of claims 1 to 9, wherein the barrel cover is provided with a through hole, the drying device is fixedly connected with the barrel cover, and the barrel body is detachably connected with the barrel cover.

Background

The specific activity and the salt content of various radioactive waste liquids are greatly different, and the treatment methods are different. Common treatment methods for low and medium level radioactive waste streams are flocculation, evaporation, ion exchange and membrane technologies (e.g. electrodialysis, reverse osmosis, ultrafiltration membranes).

The drying technology in the radioactive waste liquid drying barrel is used as a novel waste liquid treatment mode, all moisture in the radioactive waste liquid can be removed, salt attached with radioactive nuclide in the waste liquid is retained in the drying barrel, the volume of the radioactive waste is reduced to the maximum extent, and the minimization of radioactive waste treatment is realized.

Disclosure of Invention

The invention aims to solve the problem of minimizing radioactive waste treatment and provides an internal drying device of a radioactive waste liquid drying barrel and a waste liquid drying barrel comprising the same.

A radioactive liquid waste drying device in a drying barrel comprises: mounting panel, waveguide, magnetron, present can mouthful and microwave radiation cover, the microwave radiation cover with mounting panel fixed connection, it sets up to present can the mouth the microwave radiation covers in, the magnetron sets up outside the microwave radiation cover, present can the mouth to pass through the waveguide with the magnetron is connected, the bottom surface of microwave radiation cover is provided with circular trompil, last inlet, gas outlet and the gas vent of being provided with of microwave radiation cover.

The microwave power supply is arranged in the water tank, and the voltage output end of the microwave power supply is electrically connected with the voltage input end of the magnetron.

Preferably, the downside of mounting panel and the bung hole of the dry bucket of waste liquid seal the laminating, be provided with on the mounting panel with the circular through-hole that the circular trompil of microwave radiation cover corresponds, the diameter of the circular trompil of microwave radiation cover equals the diameter of circular through-hole, the diameter of circular through-hole is not more than the bung hole diameter of the dry bucket of waste liquid.

Further, drying device still includes the protection casing, the box body of protection casing for getting rid of the bottom surface, the lower extreme of protection casing with the side fixed connection that goes up of mounting panel, the microwave radiation cover sets up in the protection casing, the magnetron sets up outside the protection casing, circular through hole is located inside the protection casing.

Specifically, the protective cover is provided with an exit hole, the outer end of the waveguide passes through the exit hole to be connected with the magnetron, and the outer side surface of the waveguide is fixedly connected with the exit hole in a sealing manner;

the microwave protection cover is provided with a penetration hole, the outer end of the energy feedback port penetrates through the penetration hole to be connected with the inner end of the waveguide, the outer side face of the energy feedback port is fixedly connected with the inner side face of the penetration hole in a sealing mode, and the inner end of the waveguide is fixedly connected with the outer side face of the microwave protection cover.

Preferably, the number of the magnetrons is multiple, the magnetrons comprise side magnetrons and top magnetrons, the side magnetrons are fixedly connected with the side surface of the protective cover, and the top magnetrons are fixedly connected with the upper side surface of the protective cover;

the number of the waveguides and the energy feedback ports is multiple, and the waveguides and the energy feedback ports are arranged corresponding to the magnetron.

Furthermore, a plurality of the energy feedback ports are provided with mica sheets.

Furthermore, drying device still includes temperature sensor, level gauge and pressure sensor, temperature sensor level gauge with pressure sensor all fixes the setting and is in the medial surface of microwave radiation cover, just be provided with a plurality of confessions on the safety cover temperature sensor's signal line the signal line of level gauge with the pipeline instrument mouth that pressure sensor's signal line passed.

Preferably, the drying device further comprises a safety valve and a pressure relief pipe, wherein the inner end of the pressure relief pipe is communicated with the inside of the microwave radiation cover, and the outer end of the pressure relief pipe penetrates through the microwave radiation cover and the protective cover to be fixedly connected with the safety valve.

The utility model provides a waste liquid drying bucket, includes foretell drying device, staving and bung, be provided with the through-hole on the bung, drying device with bung fixed connection, the staving with the connection can be dismantled to the bung.

Compared with the prior art, the microwave waste liquid drying device provided by the invention realizes the purpose of heating the waste liquid in the waste liquid drying barrel through the microwave by matching the waveguide, the magnetron, the energy feedback port and the microwave radiation cover, and is beneficial to realizing the minimization of radioactive waste treatment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a drying device in a radioactive waste liquid drying barrel according to the invention.

Fig. 2 is a side view of a drying device in a radioactive waste liquid drying bucket according to the present invention.

Reference numerals: 1-waveguide, 2-magnetron, 3-protective cover, 4-water tank, 5-safety valve, 6-pipeline instrument port, 7-mounting plate, 8-microwave power supply, 9-energy feedback port and 10-microwave radiation cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the invention.

It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

In the present invention, the embodiments and features of the embodiments 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.

A radioactive liquid waste drying device in a drying barrel comprises: the microwave radiation cover comprises a mounting plate 7, a waveguide 1, a magnetron 2, an energy feedback port 9 and a microwave radiation cover 10, wherein the microwave radiation cover 10 is fixedly connected with the mounting plate 7, the energy feedback port 9 is arranged in the microwave radiation cover 10, the magnetron 2 is arranged outside the microwave radiation cover 10, the energy feedback port 9 is connected with the magnetron 2 through the waveguide 1, a circular opening is formed in the bottom surface of the microwave radiation cover 10, and a liquid inlet, a gas outlet and a gas outlet are formed in the microwave radiation cover 10.

When needs use, with the bung hole of drying device laminating at the dry bucket of waste liquid to inside arranging the bung hole of the dry bucket of waste liquid in the circular trompil of microwave radiation cover 10, then through magnetron 2, waveguide 1 and present can mouthful 9 production microwave, the microwave heats the radioactive waste liquid in the dry bucket of waste liquid through circular trompil and bung hole entering waste liquid drying bucket.

The steam generated by heating is exhausted from the exhaust port.

Since there is a possibility that other exhaust gas is generated when the radioactive waste liquid is dried, in the step of generating exhaust gas, the generated exhaust gas is discharged from the gas outlet and is treated in the subsequent lower treatment device.

The exhaust hole and the air outlet repel each other and do not start at the same time.

The inlet is used for adding radioactive waste liquid, and along with drying device's work, the waste liquid volume in the waste liquid drying bucket can progressively reduce, can be through the inlet to the inside radioactive waste liquid that adds of waste liquid drying bucket.

The drying device also comprises a microwave power supply 8 and a water tank 4, wherein the microwave power supply 8 is arranged in the water tank 4, and the voltage output end of the microwave power supply 8 is electrically connected with the voltage input end of the magnetron 2.

The microwave power supply 8 is used to supply power to the magnetron 2, and in order to avoid damage to the microwave power supply 8 by heat, microwave radiation, etc., the microwave power supply 8 is placed in the water tank 4 that can isolate part of the heat from the radiation.

The downside of mounting panel 7 and the bung hole of waste liquid drying bucket are sealed to be laminated, are provided with the circular through-hole that corresponds with the circular trompil of microwave radiation cover 10 on the mounting panel 7, and the diameter of the circular trompil of microwave radiation cover 10 equals the diameter of circular through-hole, and the diameter of circular through-hole is not more than the bung hole diameter of waste liquid drying bucket.

The general waste liquid drying barrel is a round barrel, and the opening is also a round barrel opening, so that the mounting plate 7, the microwave radiation cover 10, the round through hole and the round hole can be arranged into a round structure for corresponding adaptation.

The diameter of the circular through hole can be set to be larger than that of the circular opening, but a sealing ring needs to be additionally arranged at the moment and is connected between the circular through hole and the microwave radiation cover 10 to realize sealing, so that radioactive waste liquid is prevented from leaking from a gap.

In general, in order to prevent the microwave generated from the energy feedback port 9 from being reflected inside the microwave protection cover 3, the diameter of the microwave protection cover 3 is set to be equal to the diameter of the circular opening, that is, the bottom surface of the microwave protection cover 3 is prevented from possibly reflecting the microwave.

Because the waste liquid has radioactivity, the sealing performance of the mounting plate 7 and the waste liquid drying barrel needs to be ensured, and the leakage of radioactive liquid and gas is avoided.

The drying device further comprises a protective cover 3, the protective cover 3 is a box body for removing the bottom surface, the lower end of the protective cover 3 is fixedly connected with the upper side surface of the mounting plate 7, the microwave radiation cover 10 is arranged in the protective cover 3, the magnetron 2 is arranged outside the protective cover 3, and the circular through hole is located inside the protective cover 3.

The microwave radiation cover 10 can effectively isolate the microwave under general conditions, but in order to avoid the damage to workers caused by the microwave leakage due to the damage, the failure and the like of the microwave radiation cover 10, a protective cover 3 is additionally arranged outside the microwave protective cover 3.

The structure of the shield 3 is not specifically defined, as long as the microwave radiation cover 10 can be covered.

However, in general, the shield 3 may be configured to have a circular shape having a diameter larger than that of the microwave radiation cover 10 in order to fit the microwave radiation cover 10.

The protective cover 3 is provided with an exit hole, the outer end of the waveguide 1 passes through the exit hole to be connected with the magnetron 2, and the outer side surface of the waveguide 1 is fixedly connected with the exit hole in a sealing way;

the microwave protection cover 3 is provided with a penetration hole, the outer end of the energy feedback port 9 penetrates through the penetration hole to be connected with the inner end of the waveguide 1, the outer side surface of the energy feedback port 9 is fixedly connected with the inner side surface of the penetration hole in a sealing manner, and the inner end of the waveguide 1 is fixedly connected with the outer side surface of the microwave protection cover 3.

The through holes and the through holes are arranged for installing the waveguide 1, the energy feed port 9 and the magnetron 2, and need to be kept sealed to avoid leakage of microwave and radioactive waste liquid and gas.

In order to increase the evaporation efficiency, a plurality of magnetrons 2 may be provided, and the magnetrons 2 are installed at a plurality of positions, and thus may be classified into side magnetrons and top magnetrons, the side magnetrons being fixedly connected to the side of the shield 3, the top magnetrons being fixedly connected to the upper side of the shield 3; as shown, the number of side magnetrons is 9 and the number of top magnetrons is 4.

Correspondingly, the number of the waveguides 1 and the energy feedback ports 9 is also increased, and the waveguides 1 and the energy feedback ports 9 are arranged corresponding to the magnetron 2.

The magnetron 2 supplies power through the microwave power supply 8, the drying process is not influenced after the single magnetron 2 is damaged, and independent on-off control can be carried out through the microwave power supply 8, so that the real-time adjustment of the microwave field in the barrel is realized.

Mica sheets are additionally arranged at the energy feeding ports 9 to prevent high-temperature steam from directly contacting the magnetron 2 so as to protect the magnetron 2.

The drying device further comprises a temperature sensor, a liquid level meter and a pressure sensor, wherein the temperature sensor, the liquid level meter and the pressure sensor are all fixedly arranged on the inner side surface of the microwave radiation cover 10, and a plurality of pipeline instrument openings 6 for the signal lines of the temperature sensor, the signal lines of the liquid level meter and the signal lines of the pressure sensor to pass through are formed in the protective cover 3.

And a temperature sensor is arranged to monitor the temperature in the barrel in real time.

The liquid level gauge can be arranged to monitor the liquid level height in the barrel in real time.

And a pressure sensor is arranged to monitor the pressure in the barrel in real time.

The setting of the pipeline instrument opening 6 requires attention to the sealing performance, and the protection function of the protection cover 3 is prevented from being influenced.

The drying device further comprises a safety valve 5 and a pressure relief pipe, the inner end of the pressure relief pipe is communicated with the inside of the microwave radiation cover 10, and the outer end of the pressure relief pipe penetrates through the microwave radiation cover 10 and the protective cover 3 to be fixedly connected with the safety valve 5.

When the air pressure in the barrel is too high, after the pressure exceeds a limit value in the process, high-pressure air is guided into the safety valve 5 along the pressure relief pipe, and after the pressure exceeds the threshold value of the safety valve 5, the exhaust air is decompressed.

The specific use mode is as follows:

after the waste liquid drying barrel and the drying device are installed in place, a feed valve (installed on a feed inlet) and an exhaust valve (installed on an exhaust port) are opened to feed the radioactive waste liquid, a valve of the feed valve is closed after the feeding is finished, and an exhaust valve (with waste gas generation) or an exhaust valve (without waste gas generation) is opened according to the process conditions.

And starting the magnetron 2 to heat and dry the waste liquid in the barrel.

After the water in the barrel is completely evaporated, the magnetron 2 is closed, and the feeding valve is opened for the next feeding.

The above steps are repeated until the drum is completely filled with the dried salt cake.

The magnetron 2 is closed and the dry salt tank is subjected to subsequent disposal.

In the process, each magnetron 2 is independently switched on and off through a microwave power supply 8, so that the real-time adjustment of the microwave field in the barrel is realized.

In the process, a temperature sensor, a liquid level meter and a pressure sensor are used for monitoring process parameters.

The utility model provides a waste liquid drying bucket, includes foretell drying device, staving and bung, is provided with the through-hole on the bung, and drying device and bung fixed connection, staving and bung can dismantle and be connected.

In the above embodiment, the waste liquid drying barrel and the drying device are of a separate structure, that is, the drying device and the waste liquid drying barrel are not adapted to each other, and sealing needs to be realized by the attachment of the mounting plate 7 and the waste liquid drying barrel.

The waste liquid drying barrel mentioned in the embodiment fixes the drying device on the barrel cover, and the barrel cover is provided with the corresponding microwave guide 1 inlet through hole.

Because the barrel covers are connected with the barrel body through threads, the drying barrel in the embodiment can reduce the fixing steps of the mounting plate 7 and the waste liquid drying barrel, and can also set one barrel cover provided with a drying device and a plurality of conventional barrel covers, so that batch drying can be realized.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other variations or modifications may be made on the above invention and still be within the scope of the invention.