Multiple leakproof device for radioactive waste liquid treatment

Abstract

The utility model relates to the technical field of leakage-proof devices, in particular to a multiple leakage-proof device for radioactive waste liquid treatment. In order to solve the problems that the sealing effect of the joint is reduced, the conveying is influenced and the leakage risk is increased under the condition that waste liquid is conveyed for a long time at the joint of a common pipeline and a waste liquid treatment device, the following technical scheme is provided: the device comprises a waste liquid treatment device and a waste liquid guide pipe, a first sealing assembly and a second flange plate are arranged at the joint of the waste liquid treatment device and the waste liquid guide pipe, the first sealing assembly comprises a first flange plate, and a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring are installed on the two side wall bodies of the first flange plate respectively. According to the radioactive waste liquid treatment device, multiple sealing during radioactive waste liquid treatment is achieved, meanwhile, the purpose of internal and external simultaneous sealing is achieved, and the leakage risk is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a leak protection device technical field especially relates to a multiple leak protection device for radioactive waste liquid treatment. BACKGROUND

[0002] Radioactive waste liquid is containing radioactive material, cannot eliminate through ordinary physics, chemistry or biological method, can only reduce through natural decay of radionuclide. Radioactive waste liquid treatment is the important link in nuclear facility operation, usually needs the transportation under the guidance of pipeline, leads into waste liquid treatment equipment and carries out the treatment, and the treatment device can usually reduce the pollutant concentration in waste liquid to meet the emission standard through filtration, precipitation, chemical neutralization etc., reduces its pollution concentration, facilitates subsequent storage and emission.

[0003] But the common pipeline and waste liquid treatment device connection place reduce the sealing effect under the condition of long time when carrying waste liquid, influence transportation, and increase the risk of leakage, in view of this, we propose a multiple leak protection device for radioactive waste liquid treatment. UTILITY MODEL CONTENT

[0004] The utility model relates to a leak protection device technical field especially relates to a multiple leak protection device for radioactive waste liquid treatment.

[0005] The utility model discloses a multiple leak protection device for radioactive waste liquid treatment, including waste liquid treatment device and waste liquid guide pipe, the connecting place of waste liquid treatment device and waste liquid guide pipe is arranged with first sealing assembly and second flange respectively, first sealing assembly includes first flange, first flange's both sides wall body installs first sealing ring, second sealing ring, third sealing ring and fourth sealing ring respectively, the inner surface wall body of first flange is provided with sealing sleeve and first sealing sleeve, the port of first sealing sleeve is arranged with first piston rod, first piston plate and first spring, first flange inserts second sealing assembly, second sealing assembly includes second sealing sleeve, the end of second sealing sleeve is provided with second piston rod, second piston plate and second spring, first sealing assembly and second flange are annular array distribution between bolt, the outer surface wall body of multiple bolt is all equipped with nut, the connecting end inside of waste liquid guide pipe and waste liquid treatment device is installed with blocking ring and auxiliary ring, the hydraulic chamber is opened to the symmetry in auxiliary ring.

[0006] Preferably, the first flange and the second flange are tightly attached, the first flange and the second flange are respectively provided with a first positioning hole and a second positioning hole, and a plurality of bolts are respectively arranged in the first positioning hole and the second positioning hole corresponding in position.

[0007] Preferably, a first sealing groove is formed in the sidewall of the second flange plate, and the third sealing ring is inserted into the first sealing groove.

[0008] Preferably, a second sealing groove and a third sealing groove are respectively formed in the opposite end faces of the waste liquid treatment device and the waste liquid conduit, and the fourth sealing ring and the second sealing ring are respectively inserted into the position corresponding second sealing groove and third sealing groove.

[0009] Preferably, the first sealing ring is fixedly installed on the sidewall of the first flange plate, and the first sealing ring is sleeved on the outer surface wall of the waste liquid conduit.

[0010] Preferably, the outer surface wall of the sealing sleeve is connected with the inner surface wall of the waste liquid conduit, and the side end of the sealing sleeve is connected with the sidewall of the blocking ring.

[0011] Preferably, the hydraulic cavity is in the shape of a concave letter, and the first piston rod, the first piston plate, the first spring, the second piston rod, the second piston plate and the second spring are arranged in the position corresponding hydraulic cavity.

[0012] Compared with the prior art, the utility model has the advantages of the following beneficial technical effects:

[0013] The utility model discloses a first flange plate and second flange plate cooperate, make waste liquid treatment device and waste liquid conduit in the connecting process through the cooperation of first sealing ring, second sealing ring, third sealing ring and fourth sealing ring, realize multiple sealing to the connecting place, reduce the risk of radioactive waste liquid in the treatment of waste liquid treatment device and waste liquid conduit connection place inside is sealed under the plug -in effect of first sealing sleeve and second sealing sleeve, further improve the sealing property, and because the inlet end diameter of first sealing sleeve is greater than the diameter of second sealing sleeve, make in the liquid process utilize the extrusion of first piston rod, first piston plate and first spring to the lower half part of hydraulic cavity, so that the hydraulic oil in the cavity can cooperate second piston rod and second piston plate and hydraulic oil and push second sealing sleeve to move towards first sealing sleeve, improve the sealing property when waste liquid flows, further reduce the risk of leakage, realize multiple sealing. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a kind of radioactive waste liquid treatment with multiple leakage prevention device's three-dimensional structure schematic diagram;

[0015] Figure 2 It is Figure 1 Front view cross-sectional structure schematic diagram of

[0016] Figure 3 It is Figure 1 First sealing assembly in the three-dimensional structure schematic diagram of

[0017] Figure 4 is Figure 1 isometric view of the second sealing assembly in the middle.

[0018] Reference signs: 1, waste liquid treatment device; 2, waste liquid conduit; 3, first sealing assembly; 30, first spring; 31, first flange plate; 32, first sealing ring; 33, second sealing ring; 34, third sealing ring; 35, fourth sealing ring; 36, sealing sleeve; 37, first sealing sleeve; 38, first piston rod; 39, first piston plate; 4, second flange plate; 6, bolt; 7, nut; 9, second sealing assembly; 91, second sealing sleeve; 92, second piston rod; 93, second piston plate; 94, second spring; 10, auxiliary ring; 11, blocking ring. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be further explained in connection with the drawings and specific embodiments below. EMBODIMENT

[0020] As Figures 1 to 4As shown, the utility model provides a kind of multiple leakage prevention device for radioactive waste liquid treatment, including waste liquid treatment device 1 and waste liquid conduit 2, first sealing assembly 3 is installed at the end of waste liquid conduit 2, first sealing assembly 3 includes first spring 30, first flange plate 31, first sealing ring 32, second sealing ring 33, third sealing ring 34, fourth sealing ring 35, sealing sleeve 36, first sealing sleeve 37, first piston rod 38 and first piston plate 39, first flange plate 31 is located between waste liquid treatment device 1 and waste liquid conduit 2, it is convenient to assist the end of waste liquid treatment device 1 and waste liquid conduit 2 connection, it is favorable to subsequent waste liquid guided in waste liquid treatment device 1 is introduced into waste liquid treatment device 1 and is handled;First sealing ring 32 and second sealing ring 33 are fixedly installed on the side wall of first flange plate 31, first sealing ring 32 is sleeved on the outer surface wall of the end of waste liquid conduit 2, for sealing the outer surface wall of waste liquid conduit 2, second sealing ring 33 is inserted into the third sealing groove of the end of waste liquid conduit 2, third sealing ring 34 and fourth sealing ring 35 are fixedly installed on the other side wall of first flange plate 31, third sealing ring 34 and first sealing ring 32 are corresponding, third sealing ring 34 is inserted into the recess structure of the opposite surface wall of second flange plate 4 and first flange plate 31, and first sealing ring 32 is sealed to the outer surface wall of the connection of waste liquid treatment device 1 and waste liquid conduit 2;Fourth sealing ring 35 is inserted into the second sealing groove of the inlet end of waste liquid treatment device 1, sealing sleeve 36 is in the inner ring of first flange plate 31, the outer surface wall of sealing sleeve 36 is fixedly connected with the inner surface wall of first flange plate 31, and part of the structure of sealing sleeve 36 is inserted into waste liquid conduit 2, so that the outer surface wall of sealing sleeve 36 is tightly attached to the inner surface wall of waste liquid conduit 2, to further improve the sealing effect;

[0021] First sealing sleeve 37 is in sealing sleeve 36, and the outer surface wall of first sealing sleeve 37 is tightly attached to the inner surface wall of sealing sleeve 36, in non-fixed connection arrangement, the outer ring structure of first sealing sleeve 37 is conical from the front view cross section, for assisting waste liquid conduit 2 to guide radioactive waste liquid into waste liquid treatment device 1;The diameter of the end of first sealing sleeve 37 in sealing sleeve 36 is greater than the diameter of the end of first sealing sleeve 37 away from sealing sleeve 36, to facilitate subsequent auxiliary sealing;Barrier ring 11 is arranged in waste liquid conduit 2, the outer surface wall of barrier ring 11 is fixedly connected with the inner surface wall of waste liquid conduit 2, the side wall of barrier ring 11 contacts the side end of sealing sleeve 36, to assist the positioning of first sealing assembly 3 as a whole;

[0022] One end of the first sealing sleeve 37 is fixedly connected with the end of the first sealing sleeve 37, and the first piston plate 39 is fixedly connected with the opposite wall of the first piston rod 38, which facilitates the movement of the first sealing sleeve 37; the end of the first spring 30 is connected with the side wall of the first piston plate 39, which facilitates the resetting of the first sealing sleeve 37 after movement.

[0023] The second flange plate 4 is sleeved on the outer surface wall of the inlet end of the waste liquid treatment device 1 and is in contact with the side wall of the first flange plate 31. The second positioning hole in the second flange plate 4 corresponds in position to the first positioning hole in the first flange plate 31. A plurality of bolts 6 are respectively arranged in the position corresponding first positioning hole and the second positioning hole, which assists the connection of the first flange plate 31 and the second flange plate 4. A plurality of nuts 7 are grouped two by two. Each group of two nuts 7 is symmetrically sleeved on the outer surface wall of the position corresponding bolt 6, which is used to fix and seal the connection between the waste liquid conduit 2 and the waste liquid treatment device 1.

[0024] Further, the auxiliary ring 10 is arranged in the inlet end of the waste liquid treatment device 1. The outer surface wall of the auxiliary ring 10 is fixedly connected with the inner surface wall of the inlet end of the waste liquid treatment device 1. The second sealing assembly 9 is also arranged in the inlet end of the waste liquid treatment device 1 and is arranged on the side wall of the auxiliary ring 10. The second sealing assembly 9 includes a second sealing sleeve 91, a second piston rod 92, a second piston plate 93 and a second spring 94. The front view cross-sectional structure of the second sealing sleeve 91 is conical and is sleeved on the outer surface wall of the first sealing sleeve 37, which is matched with the first sealing sleeve 37, further improving the internal sealing effect of the connection between the waste liquid treatment device 1 and the waste liquid conduit 2.

[0025] The two ends of the second piston rod 92 are fixedly connected with the end of the second sealing sleeve 91 and the side wall of the second piston plate 93. The end of the second spring 94 is connected with the other side wall of the second piston plate 93. The second spring 94, the second piston plate 93, the first spring 30 and the first piston plate 39 are respectively arranged in the concave hydraulic cavity in the auxiliary ring 10. The second spring 94 and the second piston plate 93 are located above the first spring 30 and the first piston plate 39. The part of the end of the second piston rod 92 and the first piston rod 38 is inserted into the concave cavity opening and is fixedly connected with the second piston plate 93 and the first piston plate 39. The diameter of the first piston plate 39 and the second piston plate 93 is greater than the diameter of the hydraulic cavity opening, which facilitates the use of hydraulic oil in the hydraulic cavity to improve the sealing effect and resets under the assistance of the first spring 30 and the second spring 94.

[0026] In the embodiment, through cooperation of the first flange plate 31 and the second flange plate 4, the fixing and sealing of the connection between the waste liquid conduit 2 and the waste liquid treatment device 1 are realized by the nut 7 and the bolt 6, meanwhile, through cooperation of the first sealing ring 32, the second sealing ring 33, the third sealing ring 34 and the fourth sealing ring 35, the purpose of multi-layer sealing is achieved, the sealing effect is further improved, the risk of leakage is reduced, and when the radioactive waste liquid enters the waste liquid treatment device 1, the first sealing sleeve 37 can be moved towards the waste liquid treatment device 1 under the action of the large-diameter end portion of the first sealing sleeve 37, and in the moving process, the first piston rod 38 and the first piston plate 39 are used to extrude the hydraulic cavity, so that the second sealing sleeve 91 moves towards the outer wall of the first sealing sleeve 37 under the action of the hydraulic oil and the second piston rod 92 and the second piston plate 93, the first sealing sleeve 37 and the second sealing sleeve 91 are tightly sealed at the cooperation position, which is beneficial to reduce the risk of leakage in the flowing treatment process of the radioactive waste liquid, and the multi-layer sealing is completed.

[0027] The above specific embodiments are only several preferred embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A multi-leakage preventing device for radioactive liquid waste treatment, comprising a liquid waste treatment device (1) and a liquid waste conduit (2), characterized in that: The connecting part of the waste liquid treatment device (1) and the waste liquid conduit (2) is respectively arranged with a first sealing assembly (3) and a second flange (4), the first sealing assembly (3) comprises a first flange (31), the two side walls of the first flange (31) are respectively provided with a first sealing ring (32), a second sealing ring (33), a third sealing ring (34) and a fourth sealing ring (35), the inner surface wall of the first flange (31) is provided with a sealing sleeve (36) and a first sealing sleeve (37), the port of the first sealing sleeve (37) is arranged with a first piston rod (38), a first piston plate (39) and a first spring (30), the first flange (31) is inserted with a second sealing assembly (9), the second sealing assembly (9) comprises a second sealing sleeve (91), the end of the second sealing sleeve (91) is provided with a second piston rod (92), a second piston plate (93) and a second spring (94), the first sealing assembly (3) and the second flange (4) are arranged in annular array with bolts (6), the outer surface wall of the plurality of bolts (6) is respectively provided with a nut (7), the connecting end of the waste liquid conduit (2) and the waste liquid treatment device (1) is respectively provided with a blocking ring (11) and an auxiliary ring (10), the auxiliary ring (10) is symmetrically provided with a hydraulic cavity.

2. The multi-leak-proof device for radioactive liquid waste treatment according to claim 1, wherein The first flange (31) and the second flange (4) are in close contact, the first flange (31) and the second flange (4) are respectively provided with a first positioning hole and a second positioning hole, and the plurality of bolts (6) are respectively arranged in the first positioning hole and the second positioning hole corresponding in position.

3. The multi-leak-proof device for radioactive liquid waste treatment according to claim 1, wherein The side wall of the second flange (4) is provided with a first sealing groove, and the third sealing ring (34) is inserted into the first sealing groove.

4. The multi-leak-proof device for radioactive liquid waste treatment according to claim 1, wherein The opposite end surfaces of the waste liquid treatment device (1) and the waste liquid conduit (2) are respectively provided with a second sealing groove and a third sealing groove, and the fourth sealing ring (35) and the second sealing ring (33) are respectively inserted into the second sealing groove and the third sealing groove corresponding in position.

5. The multi-leak-proof device for radioactive liquid waste treatment according to claim 1, wherein The first sealing ring (32) is fixedly installed on the side wall of the first flange (31), and the first sealing ring (32) is sleeved on the outer surface wall of the waste liquid conduit (2).

6. The multi-leak-proof device for radioactive liquid waste treatment according to claim 1, wherein The outer surface wall of the sealing sleeve (36) is connected with the inner surface wall of the waste liquid conduit (2), and the side end of the sealing sleeve (36) is connected with the side wall of the blocking ring (11).

7. The multi-leak-proof device for radioactive liquid waste treatment according to claim 1, wherein The hydraulic cavity is in the shape of a concave letter, and the first piston rod (38), the first piston plate (39), the first spring (30), the second piston rod (92), the second piston plate (93) and the second spring (94) are arranged in the hydraulic cavity corresponding in position.

Images