CN215496037U

CN215496037U - Radioactive waste compression device

Info

Publication number: CN215496037U
Application number: CN202121396808.8U
Authority: CN
Inventors: 孙圣权; 李振臣; 李文钰; 章航洲; 徐江; 帅涛; 王小兵; 唐杨; 龚应伟; 张家衡; 刘文磊; 严佳兵; 童刚; 王智强
Original assignee: Nuclear Power Institute of China
Current assignee: Nuclear Power Institute of China
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-01-11
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a radioactive waste compression device which comprises an upper base and a lower base, wherein the upper base and the lower base are connected through a stand column, the upper end surface of the lower base is provided with a female die foundation, the lower end surface of the upper base is provided with a pressure head pushing mechanism, the end part of the pressure head pushing mechanism is detachably provided with a pressure head, the radioactive waste compression device also comprises a female die assembly matched with the pressure head, the female die assembly comprises a fixed cylinder and a female die, the outer wall of the fixed cylinder is provided with a guide block, the guide block is arranged on the stand column in a sliding mode, the female die is detachably arranged on the inner side of the fixed cylinder, the female die and the fixed cylinder are both in a structure with two open ends, and the lower base is internally provided with a female die pushing mechanism matched with the fixed cylinder. The utility model can press radioactive solid waste into different shapes by replacing the pressure heads with different shapes and the concave dies matched with the pressure heads.

Description

Radioactive waste compression device

Technical Field

The utility model relates to the technical field of radioactive waste treatment, in particular to a radioactive waste compression device.

Background

During operation and maintenance of nuclear facilities, particularly decommissioning, large quantities of non-combustible, but compressible volume-reduced solid waste are produced. The practice proves that the super-compression technology is considered as one of the most reliable volume reduction methods of the low and medium radioactive solid wastes. The volume reduction effect depends on the porosity, density of the raw waste, the strength of the compressor and the resilience of the waste, etc. The super compression volume reduction technology is the most direct and simple volume reduction method, has the advantages of low investment, low operation cost, almost no secondary waste and the like, and is widely applied to nuclear power stations, nuclear research and development centers and various facilities for nuclear fuel circulation at home and abroad.

At present, all super compression systems adopted by nuclear facility operation units such as domestic nuclear power stations or reactors come from imports, main manufacturers have West-inghoudr/Hittman, Nukem, Hansha, BIG and the like, and some domestic mechanical equipment manufacturers all have a localization idea, but most of the super compression systems are simple to copy imported equipment, and the volume reduction effect of radioactive solid wastes cannot be effectively improved.

According to the existing super compression system treatment process, the circular pressed cakes generated after compression are filled into a national standard steel box, then cement grouting and fixation are carried out, and after the external transportation requirements are met, the circular pressed cakes are transported to a national low-level solid waste disposal site for disposal. The traditional process method is solidified, the existing super compressor is found to have no function of quickly replacing a pressure head and a female die in the using process, the shape of a pressed cake cannot be changed, and the circular pressed cake is placed in a standard steel box, so that the waste filling rate is low due to the limitation of the shape, and the volume of the inner cavity of the box cannot be fully utilized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a radioactive waste compression device, which solves the problem that the shape of a pressed cake is fixed because a pressing head and a concave die of the conventional compression device cannot be replaced.

The utility model is realized by the following technical scheme:

the utility model provides a radioactive waste compression device, includes frame and lower base, go up and be connected through the stand between frame and the lower base, the up end of base is provided with the die basis down, the lower terminal surface of going up the frame is provided with pressure head pushing mechanism, pressure head pushing mechanism's detachable pressure head that is provided with of tip still includes with pressure head complex die subassembly, the die subassembly includes solid fixed cylinder and die, the outer wall of solid fixed cylinder is provided with the guide block, the guide block slides and sets up on the stand, the detachable setting of die is inboard at solid fixed cylinder, die and solid fixed cylinder are both ends open structure, be provided with in the lower base with solid fixed cylinder complex die pushing mechanism.

The press head and the female die can be replaced, and the radioactive solid waste can be pressed into different shapes by replacing the press heads with different shapes and the female die matched with the press heads.

Further, the pressure head includes pressing part and fixed part, the fixed part is the sleeve, the sleeve cover is established at pressure head pushing mechanism's tip and is fixed through the bolt.

Further, a plurality of bolts are arranged in the circumferential direction of the sleeve for fixation.

Furthermore, the upper end surface of the female die horizontally extends outwards to form an annular convex edge, the annular convex edge is matched with the top of the fixed cylinder, and the annular convex edge is fixed with the top of the fixed cylinder through a positioning pin.

Further, the width of the annular convex edge is equal to the thickness of the fixed cylinder.

Further, the outer wall of the female die is of a circular structure, the fixed cylinder is provided with a central through hole in the axial direction, and the inner diameter of the central through hole is consistent with the outer diameter of the female die.

Furthermore, a positioning block is arranged on the pressure head pushing mechanism, and an organ cover is arranged between the positioning block and the fixed cylinder.

Furthermore, two ends of the organ cover are respectively arranged on the outer walls of the positioning block and the fixing cylinder in a sliding mode.

Furthermore, the guide block is a sliding sleeve which is sleeved on the upright post.

Further, the pressure head pushing mechanism and the female die pushing mechanism are hydraulic cylinders.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

the utility model can press radioactive solid waste into different shapes by replacing the pressure heads with different shapes and the concave dies matched with the pressure heads.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:

fig. 1 is a schematic structural view of a compression device.

Reference numbers and corresponding part names in the drawings:

1-upper machine base, 2-pressure head pushing mechanism, 3-positioning block, 4-pressure head, 5-upright post, 6-organ cover, 7-female die, 8-fixed cylinder, 9-guide block, 10-lower base, 11-female die pushing mechanism, 12-female die base, 13-positioning pin and 14-bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1:

as shown in fig. 1, a radioactive waste compressing apparatus, comprises an upper chassis 1 and a lower chassis 10, the upper base 1 and the lower base 10 are connected through a column 5, the upper end surface of the lower base 10 is provided with a concave die foundation 12, the lower end surface of the upper machine base 1 is provided with a pressure head pushing mechanism 2, the end part of the pressure head pushing mechanism 2 is detachably provided with a pressure head 4, the upper machine base also comprises a female die component matched with the pressure head 4, the female die component comprises a fixed cylinder 8 and a female die 7, the outer wall of the fixed cylinder 8 is provided with a guide block 9, the guide block 9 is arranged on the upright post 5 in a sliding way, the female die 7 is arranged on the inner side of the fixed cylinder 8 in a dismountable way, die 7 and solid fixed cylinder 8 are both ends open structure, the bottom of die 7 and solid fixed cylinder 8 flushes, be provided with in the lower base 10 with solid fixed cylinder 8 complex die pushing mechanism 11.

In this embodiment, the pressure head 4 includes a pressing portion and a fixing portion, the fixing portion is a sleeve, and the sleeve is sleeved on the end portion of the pressure head pushing mechanism 2 and fixed by a bolt 14; a plurality of bolts are arranged in the circumferential direction of the sleeve for fixing.

In this embodiment, the upper end surface of the female die 7 extends horizontally outwards to form an annular convex edge, the annular convex edge is matched with the top of the fixed cylinder 8, and the annular convex edge is fixed with the top of the fixed cylinder 8 through a positioning pin 13; the width of the annular convex edge is equal to the thickness of the fixed cylinder 8.

In this embodiment, the outer wall of the female die 7 is a circular structure, and the fixed cylinder 8 is provided with a central through hole in the axial direction, and the inner diameter of the central through hole is consistent with the outer diameter of the female die 7.

In this embodiment, the guide block 9 is a sliding sleeve, and the sliding sleeve is sleeved on the upright post 5.

In this embodiment, the pressing head pushing mechanism 2 and the die pushing mechanism 11 are both hydraulic cylinders.

In this embodiment, in order to realize the compression of the radioactive waste into different shapes, different shapes of the indenter 4 may be prepared, wherein the pressing portion of the indenter 4 may be prepared into a circle, a square, etc., and the shape of the inner cavity of the female die 7 matches with the pressing portion of the indenter 4, for example: when the pressing part needs to be pressed into a round shape, the pressing head 4 with the square pressing part is installed at the end of the pressing head pushing mechanism 2 through a bolt 14, the female die 7 with the square inner cavity is fixed on the inner side of the fixed cylinder 8 through a positioning pin 13, the positioning pin 13 is used for limiting the relative displacement of the female die 7 in the horizontal direction through the fixed cylinder 8, and the relative displacement of the female die 7 in the vertical direction through the fixed cylinder 8 is limited through the female die pushing mechanism 11.

The working principle of the embodiment is as follows:

will treat that compression solid waste places on die basis 12, slides on stand 5 through guide block 9 and descends the die subassembly to die basis 12 positions, and drive pressure head pushing mechanism 2 makes pressure head 4 move down get into die 7 will treat compression solid waste press forming, then drive pressure head pushing mechanism 2 makes pressure head 4 move up, drives die pushing mechanism 11 again and upwards jacks the die subassembly, takes out fashioned solid waste.

This embodiment accessible is changed the pressure head 4 of different shapes and the die 7 that matches with it, can suppress radioactive solid waste into different shapes, and the radioactive solid waste of different shapes has better filling rate when the vanning, compares circular cake vanning, improves about 20% of the filling rate of pressing cake vanning, reduces the radioactive solid waste volume of final processing, reduces each item cost that radioactive solid waste outward transportation was dealt with.

Example 2:

as shown in fig. 1, in this embodiment, based on embodiment 1, a positioning block 3 is disposed on the ram pushing mechanism 2, and an organ cover 6 is disposed between the positioning block 3 and a fixed cylinder 8; two ends of the organ cover 6 are respectively arranged on the outer walls of the positioning block 3 and the fixed cylinder 8 in a sliding mode.

In the embodiment, the organ cover 6 has certain contractibility, namely, the movement of the concave making die 7 in the vertical direction through the fixed cylinder 8 is not influenced, and the blocking effect can be realized, and the sliding arrangement of the organ cover 6 is similar to that of a curtain.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The radioactive waste compression device is characterized by comprising an upper base (1) and a lower base (10), wherein the upper base (1) is connected with the lower base (10) through a stand column (5), the upper end face of the lower base (10) is provided with a female die foundation (12), the lower end face of the upper base (1) is provided with a pressure head pushing mechanism (2), the end part of the pressure head pushing mechanism (2) is detachably provided with a pressure head (4), the device also comprises a female die component matched with the pressure head (4), the female die component comprises a fixed cylinder (8) and a female die (7), the outer wall of the fixed cylinder (8) is provided with a guide block (9), the guide block (9) is arranged on the stand column (5) in a sliding manner, the female die (7) is arranged on the inner side of the fixed cylinder (8), and the female die (7) and the fixed cylinder (8) are both ends of an open structure, and a female die pushing mechanism (11) matched with the fixed cylinder (8) is arranged in the lower base (10).

2. The radioactive waste compression device of claim 1, wherein the ram (4) comprises a pressing portion and a fixing portion, the fixing portion is a sleeve, and the sleeve is sleeved on the end portion of the ram pushing mechanism (2) and fixed through a bolt (14).

3. A radioactive waste compression apparatus according to claim 2, wherein a plurality of bolts are arranged circumferentially of the sleeve for securing.

4. The radioactive waste compression device of claim 1, wherein the upper end surface of the female die (7) horizontally extends outwards to form an annular flange, the annular flange is matched with the top of the fixed cylinder (8), and the annular flange and the top of the fixed cylinder (8) are fixed through a positioning pin (13).

5. A radioactive waste compression device according to claim 4, wherein the annular flange has a width equal to the thickness of the stationary canister (8).

6. A radioactive waste compression device according to claim 1, wherein the outer wall of the female die (7) is of circular configuration, and the fixed cylinder (8) is provided with a central through hole in the axial direction, the inner diameter of the central through hole corresponding to the outer diameter of the female die (7).

7. The radioactive waste compression device as claimed in claim 1, wherein the ram pushing mechanism (2) is provided with a positioning block (3), and an organ cover (6) is arranged between the positioning block (3) and the fixed cylinder (8).

8. The radioactive waste compression device as claimed in claim 7, wherein the two ends of the organ cover (6) are respectively and slidably arranged on the outer walls of the positioning block (3) and the fixed cylinder (8).

9. A radioactive waste compression device according to claim 1, wherein the guide block (9) is a sliding sleeve which is fitted over the upright (5).

10. A radioactive waste compression device according to any one of claims 1 to 9, wherein the ram pushing mechanism (2) and the die pushing mechanism (11) are hydraulic cylinders.