CN113354256A

CN113354256A - Cover body, stove and material processing equipment

Info

Publication number: CN113354256A
Application number: CN202110685144.5A
Authority: CN
Inventors: 张克乾; 张华�; 鲜亮; 洪业; 李宝军; 李扬; 贺诚; 郄东生; 汪润慈; 李玉松
Original assignee: China Institute of Atomic of Energy
Current assignee: China Institute of Atomic of Energy
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-09-07

Abstract

A cover body for a stove, the stove and a material processing device. The stove includes the furnace body, and the furnace body is injectd the furnace body chamber that has the sample connection. The lid includes: the cover plate is arranged at the sampling port and used for opening and closing the sampling port; the at least one electromagnet is arranged at the position, corresponding to the cover plate, of the cover plate and/or the furnace body, when the at least one electromagnet is electrified, the at least one electromagnet generates an adsorption force which enables the cover plate and the furnace body to be mutually adsorbed so that the cover plate seals the sampling opening, and when the at least one electromagnet is powered off, the adsorption force is eliminated. The adoption of the at least one electromagnet to generate the adsorption force can ensure the sealing effect of the stove when the sampling port is closed, and can realize the remote opening or closing of the sampling port.

Description

Cover body, stove and material processing equipment

Technical Field

The invention relates to the technical field of stoves, in particular to a cover body, a stove and material processing equipment.

Background

The furnace may be a rotary calciner of the glass curing technology, and may be used to heat materials. The technical route of high-level radioactive waste liquid treatment is determined in China at present to be a glass solidification technology, the cold crucible glass solidification technology is a novel glass solidification technology for radioactive waste treatment in China at present, a power supply is used for generating high-frequency (105-106 Hz) current, the high-frequency current is converted into electromagnetic current through an induction coil to penetrate into a material to be heated, eddy current is formed to generate heat, and the material to be treated is directly heated and melted. The cold crucible glass solidification device mainly comprises a high-frequency induction power supply, a cold crucible furnace body and other auxiliary systems, wherein the cold crucible furnace body is a container (the shape of the container is mainly circular or oval) formed by metal arc blocks or tubes filled with cooling water, the cooling water is continuously filled into the metal tube during working, the temperature of a melt in the crucible can reach more than 2000 ℃, but the crucible wall still keeps a lower temperature (generally less than 200 ℃) so that a layer of solid glass shell (cold wall) with the thickness of 2-3 cm is formed in a low-temperature region of the furnace body close to a sleeve in the operation process, and the cold crucible furnace body is called as a cold crucible. Compared with other glass solidification technologies, the cold crucible technology has the main advantages of high melting temperature, wide waste treatment type, long service life (more than 20a) of the melting furnace and easy decommissioning.

The cold crucible glass solidification technology has the advantages that the treatment temperature is high, the service life of the smelting furnace is long and the like which cannot be compared with other solidification technologies, is a more advanced glass solidification technology and is more suitable for the requirement of long-term continuous operation of a post-treatment plant.

A relatively complete industrial system is basically established in the front stage of the nuclear fuel cycle in China, but the rear stage (including high-level waste treatment and disposal and the like) of the nuclear fuel cycle cannot form autonomous industrial production capacity so far. The high-level radioactive waste liquid glass curing treatment technology covers the specialties and subjects of nuclear chemical industry, radiochemistry, high-temperature chemistry, mechanical design and manufacturing, silicate material science, automatic control, electromagnetism and the like, is high-tech crystals and reflects the scientific and industrial level of a country. Because of the strong radioactivity and high temperature operation, the requirements on materials and equipment are high, the requirements on the reliability, stability and safety of the equipment are far higher than the requirements of the common industry, and more manpower and material resources are required to be invested. The glass curing technology is a link with great technical difficulty in closed circulation of nuclear fuel, and the glass curing of high-level radioactive waste liquid becomes a weak link in the circulation of the nuclear fuel in China due to insufficient technical storage for many years. The two-step cold crucible glass solidification related technology is about to be further broken through and developed.

At present, the countries in the world in which the development of the cold crucible glass solidification technology is performed are france, uk, usa, india, korea, china, and the like. The French high-level radioactive waste liquid cold crucible glass solidification technology develops fastest, and the two-step cold crucible glass solidification industrial operation production of U-Mo high-level radioactive waste is realized in 2012 and 2013. Because the cold crucible furnace has a small volume, a rotary calciner is usually equipped to convert the high-level radioactive waste liquid into powder, so the main key equipment of the cold crucible glass solidification technology comprises the rotary calciner and a cold crucible body.

However, during the heating of the material by the oven, it may be necessary to sample the material in the oven through a sampling port. And then, the calcined substance generated in the furnace can be analyzed to determine the operation condition and the calcination effect of the furnace under different process conditions, and whether the water content, the density and the particle size of the calcined product meet the requirements can be checked. In addition, if the subsequent product is not qualified, the reason can be found from the analysis of the calcined product. When not taking a sample, need the sample connection again and close to guarantee the sealed effect of stove, however, prior art can't guarantee the sealed effect of stove when the sample connection closes. And, in the factory building that multiple equipment arranged, because consider hoist and mount and equipment linkage, be difficult to closely open or close the sample connection, how remote realization sample connection's automation is opened and is closed to can realize automatic seal, become the technical problem that awaits a urgent need in order to guarantee the sealed effect of whole equipment.

Disclosure of Invention

The present invention provides in a first aspect a cover for a stove comprising a stove body defining a stove chamber having a sampling port, wherein the cover comprises: the cover plate is arranged at the sampling port and used for opening and closing the sampling port; the at least one electromagnet is arranged at the position, corresponding to the cover plate, of the cover plate and/or the furnace body, when the at least one electromagnet is electrified, an adsorption force enabling the cover plate and the furnace body to be mutually adsorbed so as to enable the cover plate to seal the sampling port is generated, and when the at least one electromagnet is powered off, the adsorption force is eliminated.

Optionally, the cover plate comprises: a first end surface configured to face the furnace chamber when the cover plate and the furnace body are attracted to each other; a plurality of side surfaces, each of which is configured to extend from one side of the first end surface to a direction away from the furnace chamber when the cover plate and the furnace body are attracted to each other; and the second end surface is connected with one end of each side surface, which is far away from the first end surface.

Optionally, the first end face and the second end face are rectangular; the middle parts of two side surfaces which are oppositely arranged in the plurality of side surfaces are respectively hinged with the furnace body.

Optionally, the at least one electromagnet comprises a plurality of electromagnets disposed on the cover plate; the orthographic projection of any electromagnet in the plurality of electromagnets on the first end surface or the second end surface is superposed with two adjacent edges of the first end surface or the second end surface.

Optionally, the cover plate is provided with a plurality of accommodating cavities corresponding to the plurality of electromagnets one to one, and each accommodating cavity is used for accommodating one of the plurality of electromagnets.

Optionally, the furnace body comprises: a first furnace body defining a heating chamber for heating a material, the first furnace body configured to rotate as the heating chamber heats the material; a second body defining a discharge chamber for providing a path for the material to flow out of the furnace; the furnace body chamber includes the heating chamber and the ejection of compact chamber, the ejection of compact chamber has the sample connection.

Optionally, the upper part of the sampling port is lower than the bottom of the first furnace body.

Optionally the oven further comprises: and the sealing piece is used for sealing the sampling port together with the cover plate when the cover plate and the furnace body are mutually adsorbed.

A second aspect of the present invention provides a stove, comprising: the furnace body defines a furnace body cavity with a sampling port; in any of the above-mentioned lids, the cover plate of the lid is disposed at the sampling opening for opening and closing the sampling opening, and the at least one electromagnet of the lid is disposed at a position corresponding to the cover plate and/or the furnace body.

A third aspect of the present invention provides a material handling apparatus, comprising: the above furnace, wherein the furnace heats the material into slurry or powder; and the solidifying device is used for receiving and melting the glass base material and the material in a slurry or powder state to obtain solidified glass.

Drawings

Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.

Fig. 1 is a schematic structural view of a oven according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a cover plate of the oven according to an embodiment of the present invention;

figure 3 is a cross-sectional view of a cover plate of the oven according to one embodiment of the present invention;

fig. 4 is a schematic structural diagram of a material handling apparatus according to an embodiment of the present invention.

It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.

The present embodiment firstly provides a cover for a stove 10, and fig. 1 is a schematic structural view of the stove 10 according to an embodiment of the present invention.

The stove 10 includes a stove body 100, and the cover body includes a cover plate 200 and at least one electromagnet 300. The furnace body 100 defines a furnace body cavity 110 having a sampling port 111. The cover plate 200 is disposed at the sampling port 111 for opening and closing the sampling port 111. The at least one electromagnet 300 is disposed at the cover 200 and/or the furnace body 100 corresponding to the cover 200, that is, in some embodiments, the at least one electromagnet 300 is disposed at the cover 200, in other embodiments, the at least one electromagnet 300 is disposed at the furnace body 100 corresponding to the cover 200, in other embodiments, the at least one electromagnet 300 is partially disposed at the cover 200, and another portion is disposed at the furnace body 100 corresponding to the cover 200.

When the at least one electromagnet 300 is powered on, an adsorption force which enables the cover plate 200 and the furnace body 100 to be mutually adsorbed so as to enable the cover plate 200 to seal the sampling port 111 is generated, and when the at least one electromagnet 300 is powered off, the adsorption force is eliminated. It will be appreciated that when the suction force is removed, the sample port 111 may be opened.

The adoption of the at least one electromagnet 300 to generate the adsorption force can ensure the sealing effect of the furnace when the sampling port 111 is closed, thereby maintaining the negative pressure of the furnace body cavity 110 area corresponding to the sampling port 111 and ensuring the normal operation of the furnace 10. Meanwhile, the control of the adsorption force can be realized only by controlling the on-off of the electromagnet, the operation process is simple, and the user experience is improved. It will be appreciated that a switch for controlling the switching on and off of the electromagnet may be provided at a location convenient for operation by an operator. The open/close state of the sampling port 111 can be realized by remote operation.

When the furnace 10 is in operation, the at least one electromagnet 300 can be switched off, so that the sampling port can be opened, and the calcined substance generated in the furnace 10 can be analyzed to determine the operation condition and the calcination effect of the furnace 10 under different process conditions, and whether the water content, the density and the particle size of the calcined product meet the requirements can be checked. In addition, if the subsequent product is not qualified, the reason can be found from the analysis of the calcined product.

Fig. 2 is a schematic structural view of a cover plate 200 of the oven 10 according to an embodiment of the present invention. As shown in fig. 2, the cap plate 200 includes a first end surface 210, a plurality of side surfaces 220, and a second end surface 230.

The first end surface 210 is disposed to face the furnace chamber 110 when the lid plate 200 and the furnace body 100 are attracted to each other. And a plurality of side surfaces 220, each of the side surfaces 220 being configured to extend from one side of the first end surface 210 in a direction away from the furnace chamber 110 when the cover 200 and the furnace body 100 are attracted to each other. The second end face 230 connects an end of each side face 220 remote from the first end face 210. The cover plate 200 has a simple structure and reduces the production cost.

The first end surface 210 and the second end surface 230 may be rectangular, thereby facilitating the machining and improving the machining efficiency.

The middle portions of two oppositely disposed side surfaces 220 of the plurality of side surfaces 220 may be hinged to the furnace body 100 (as shown in fig. 2, the point a may be a hinge point). This allows the cover plate 200 to be uniformly stressed in all areas and provides a better seal when closing the sampling port 111.

The at least one electromagnet 300 includes a plurality of electromagnets 300 disposed on the cover plate 200, the electromagnets 300 disposed on the cover plate 200 facilitate the production and manufacturing of the oven 10, and the plurality of electromagnets 300 can ensure the sealing effect during the sealing process.

Fig. 3 is a cross-sectional view (the cross-sectional view is perpendicular to the arrangement direction of the first end surface 210 and the second end surface 230) of the cover plate 200 of the oven 10 according to an embodiment of the present invention, and as shown in fig. 3, an orthographic projection of any one of the plurality of electromagnets 300 on the first end surface 210 or the second end surface 230 coincides with two adjacent edges of the first end surface 210 or the second end surface 230.

In some embodiments, the orthographic projection of any electromagnet 300 of the plurality of electromagnets 300 on the first end surface 210 coincides with two adjacent edges of the first end surface 210, and in other embodiments, the orthographic projection of any electromagnet 300 of the plurality of electromagnets 300 on the second end surface 230 coincides with two adjacent edges of the second end surface 230. Therefore, the adsorption force of each electromagnet 300 can act on different side surfaces 220, and the sealing effect during sealing can be ensured.

The magnitude of the attraction force generated by each electromagnet 300 may be selected according to actual conditions, for example, the magnitude of the attraction force generated by each electromagnet 300 may be 30N or the like.

The cover plate 200 may be formed with a plurality of accommodating cavities 240 corresponding to the plurality of electromagnets 300 one to one, and each accommodating cavity 240 is used for accommodating one of the plurality of electromagnets 300. Therefore, the cover plate 200 can protect the electromagnet 300 to a certain extent, the size and the weight of the stove 10 can be reduced, and the user experience is improved.

The furnace body 100 may include a first furnace body 120 and a second furnace body 130. The first body 120 defines a heating chamber for heating the material, the first body 120 being configured to rotate as the heating chamber heats the material, and the second body 130 defines an exit chamber for providing a path for the material to flow out of the oven 10. The furnace chamber 110 includes a heating chamber and a discharge chamber, and the discharge chamber has a sampling port 111. In some embodiments, the volume of the discharge chamber may be greater than the volume of the heating chamber, thereby avoiding dropping of material when the sampling port 111 is opened.

It can be understood that the heating chamber may have a first heating chamber opening and a second heating chamber opening, wherein the first heating chamber opening may be a feeding opening, and the second heating chamber opening may be a discharging opening, that is, the material enters the heating chamber through the feeding opening, and after being heated in the heating chamber, the material is discharged out of the heating chamber through the discharging opening.

In some embodiments, the inlet is selectively closed by the third body, the outlet is selectively closed by the second body 130, the furnace 10 can be a rotary calciner, the first body 120 rotates when the rotary calciner operates, and the second body 130 and the third body are fixed relatively.

The upper portion of the sampling port 111 may be lower than the bottom of the first furnace body 120, thereby facilitating the sampling of the material, especially when the furnace 10 is hoisted, by the operator.

The oven 10 may further include a sealing member for sealing the sampling port 111 together with the cover plate 200 when the cover plate 200 and the oven body 100 are attached to each other. Thereby, a sealing effect at the time of sealing can be ensured, and specifically, the sealing member may be a gasket.

The present embodiment further provides a stove 10, wherein the stove 10 includes a stove body 100 and any one of the above covers. The furnace body 100 defines a furnace body cavity 110 having a sampling port 111. The cover plate 200 of the cover body is disposed at the sampling port 111 for opening and closing the sampling port 111, and the at least one electromagnet 300 of the cover body is disposed at a position corresponding to the cover plate 200 and/or the furnace body 100 of the cover body.

The embodiment also provides a material processing device, and fig. 4 is a schematic structural diagram of the material processing device according to an embodiment of the invention. The material processing equipment comprises the furnace 10 and the curing device 20. The furnace 10 heats the material into paste or powder, and the solidifying device 20 is used for receiving and melting the glass base material and the paste or powder material to obtain solidified glass.

In some embodiments, the oven 10 may be a rotary calciner and the solidification device 20 may be a cold crucible. The second furnace body 130 can have a third opening, namely, the outlet of the discharging cavity is connected with the cold crucible, the cold crucible can be hoisted, and the sampling through the third opening can not be directly performed at the moment, so that the sampling can be performed remotely through the sampling port 111.

It should also be noted that, in the case of the embodiments of the present invention, features of the embodiments and examples may be combined with each other to obtain a new embodiment without conflict.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention is subject to the scope of the claims.

Claims

1. A cover for a stove (10) comprising a stove body (100), the stove body (100) defining a stove body cavity (110) having a sampling port (111), wherein the cover comprises:

a cover plate (200) which is arranged at the sampling port (111) and is used for opening and closing the sampling port (111);

the at least one electromagnet (300) is arranged at the position, corresponding to the cover plate (200), of the cover plate (200) and/or the furnace body (100), when the at least one electromagnet (300) is electrified, an adsorption force is generated, the cover plate (200) and the furnace body (100) are mutually adsorbed, so that the cover plate (200) seals the sampling port (111), and when the at least one electromagnet (300) is powered off, the adsorption force is eliminated.

2. Cover according to claim 1, wherein the cover plate (200) comprises:

a first end surface (210) configured to face the furnace body cavity (110) when the cover plate (200) and the furnace body (100) are mutually adsorbed;

a plurality of side surfaces (220), each of the side surfaces (220) being configured to extend from one side of the first end surface (210) in a direction away from the furnace chamber (110) when the cover plate (200) and the furnace body (100) are attracted to each other;

a second end face (230) connecting an end of each of the side faces (220) remote from the first end face (210).

3. A cover according to claim 2 wherein the first end face (210) and the second end face (230) are rectangular;

the middle parts of two side surfaces (220) which are oppositely arranged in the plurality of side surfaces (220) are respectively hinged with the furnace body (100).

4. A cover according to claim 3, wherein the at least one electromagnet (300) comprises a plurality of electromagnets (300) provided to the cover plate (200);

the orthographic projection of any electromagnet (300) in the plurality of electromagnets (300) on the first end face (210) or the second end face (230) is coincident with two adjacent edges of the first end face (210) or the second end face (230).

5. The cover according to claim 4, wherein,

the cover plate (200) is provided with a plurality of accommodating cavities (240) corresponding to the electromagnets (300) one by one, and each accommodating cavity (240) is used for accommodating one of the electromagnets (300).

6. The cover according to claim 1, wherein the furnace body (100) comprises:

a first furnace body (120) defining a heating chamber for heating a material, the first furnace body (120) configured to rotate as the heating chamber heats the material;

a second body (130) defining an outfeed cavity for providing a path for the material to flow out of the oven (10);

the furnace cavity (110) comprises the heating cavity and the discharging cavity, and the discharging cavity is provided with the sampling port (111).

7. The cover of claim 6, wherein,

the upper part of the sampling port (111) is lower than the bottom of the first furnace body (120).

8. The cover of claim 1, further comprising:

and the sealing piece is used for sealing the sampling port (111) together with the cover plate (200) when the cover plate (200) and the furnace body (100) are mutually adsorbed.

9. A stove (10), comprising:

a furnace body (100) defining a furnace body cavity (110) having a sampling port (111);

cover according to any one of claims 1 to 8, wherein the cover plate (200) of the cover is arranged at the sampling opening (111) for opening and closing the sampling opening (111), and the at least one electromagnet (300) of the cover is arranged at a position of the cover plate (200) and/or the furnace body (100) corresponding to the cover plate (200).

10. An apparatus for processing material, comprising:

the oven (10) of claim 9, said oven (10) heating the material to a slurry or powder form;

and a solidifying device (20) for receiving and melting the glass base material and the material in a slurry or powder state to obtain solidified glass.