CN215218152U

CN215218152U - Closed sampling device of sodium-cooled fast reactor sodium valve

Info

Publication number: CN215218152U
Application number: CN202120816305.5U
Authority: CN
Inventors: 杨冬; 高汉兴; 李保廷
Original assignee: Cnnc Xiapu Nuclear Power Co ltd; Zhonghe Longyuan Technology Co ltd
Current assignee: Cnnc Xiapu Nuclear Power Co ltd; Zhonghe Longyuan Technology Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-12-17
Anticipated expiration: 2031-04-21

Abstract

The invention particularly relates to a closed sampling device of a sodium-cooled fast reactor sodium valve, which comprises a base (1), a first jacket (2), a second jacket (3), a sleeve (4) and a sealing sleeve (7); the sodium valve is characterized in that a first clamping sleeve (2) is fixedly connected onto the base (1), the first clamping sleeve (2) and the second clamping sleeve (3) are detachably connected to form a cavity, sleeve pipes (4) with sealing sleeves (7) sleeved inside are arranged on two opposite sides of the cavity in a movable mode, a through valve rod round hole is formed in the top of the cavity, a sampling pipe is arranged at the bottom of the cavity, the valve rod round hole is right opposite to the center of the sampling pipe, and the valve rod round hole is matched with a valve rod of a sodium valve. The utility model discloses a closed sampling device of sodium valve can prevent that argon gas from leaking, and measurement accuracy is high.

Description

Closed sampling device of sodium-cooled fast reactor sodium valve

Technical Field

The utility model relates to a sodium valve presss from both sides cover technical field, especially relates to a closed sampling device of sodium-cooled fast reactor sodium valve.

Background

Liquid sodium is used as a cooling agent of a unit in the sodium-cooled fast reactor, and the sodium has active chemical property and is easy to generate chemical reaction with air, so that the state of the unit brings operation and industrial risks, and therefore, in the sodium-cooled fast reactor, the sodium must exist under the condition of argon gas sealing.

The sodium valve is a sampling device commonly applied to the sodium-cooled fast reactor and is an important guarantee for the operation of a unit. During the debugging and normal operation of the unit, an extremely high requirement is provided for the air tightness of the sodium valve in the debugging and operation processes, and from the viewpoint of safety, during the debugging and operation of the unit, when the argon gas leakage of the sodium valve occurs, field workers must quickly measure and find the working condition.

At present, for the leakage of a sodium valve, the sodium leakage monitoring can be realized only after liquid sodium leaks out of the valve. For the position with higher leakage point, the detection can not be carried out in time.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a sodium valve closed sampling device which can prevent leakage of argon gas and has high measurement accuracy, in order to solve the problem of leakage of argon gas in the sodium valve closed sampling device.

In order to achieve the above object, the present invention provides the following technical solutions:

a closed sampling device of a sodium-cooled fast reactor sodium valve comprises a base, a first jacket, a second jacket, a sleeve and a sealing sleeve; the sodium valve comprises a base and is characterized in that a first clamping sleeve is fixedly connected onto the base, the first clamping sleeve and a second clamping sleeve are detachably connected to form a cavity, sleeves with sealing sleeves movably sleeved inside are arranged on two opposite sides of the cavity, a through valve rod round hole is formed in the top of the cavity, a sampling tube is arranged at the bottom of the cavity, the valve rod round hole is opposite to the sampling tube in center, and the valve rod round hole is matched with a valve rod of a sodium valve.

Furthermore, the first clamping sleeve comprises a bottom plate and first side plates which are respectively and vertically connected to the periphery of the bottom plate in sequence, and a cavity with an opening at the top is formed between the bottom plate and the first side plates.

Furthermore, the second jacket comprises a top plate and second side plates which are respectively vertically connected to the periphery of the top plate in sequence, and a cavity with an opening at the bottom is formed between the top plate and the second side plates.

Further, connect perpendicularly and be equipped with the just right first arc spread groove of centre of a circle on the first curb plate upper portion of the relative both sides of bottom plate, connect perpendicularly and be equipped with the just right second arc spread groove of centre of a circle on the second curb plate upper portion of the relative both sides of roof, the size of first arc spread groove and second arc spread groove is the same, first arc spread groove and second arc spread groove combine to form the circular port.

Furthermore, the first side plates vertically connected to the two opposite sides of the bottom plate respectively protrude outwards from the first arc-shaped connecting grooves to weld and fix the first sleeves, the second side plates vertically connected to the two opposite sides of the top plate respectively protrude outwards from the second arc-shaped connecting grooves to weld and fix the second sleeves, the first sleeves and the second sleeves are the same in size, and the first sleeves and the second sleeves are combined to form sleeves.

Furthermore, a sampling tube is arranged on the bottom plate, a through valve rod round hole is arranged on the top plate, and a sponge plug is plugged in a gap between the valve rod round hole and the valve rod of the sodium valve.

Furthermore, a limiting groove is formed in an opening of the first jacket, a limiting convex strip is arranged at an opening of the second jacket, and the limiting groove is matched with the limiting convex strip.

Furthermore, the end part of the first side plate vertically connected to the other two sides of the bottom plate is provided with a limiting groove, the end part of the second side plate vertically connected to the other two sides of the top plate is provided with a limiting convex strip, and the limiting groove and the limiting convex strip are matched with each other to form clamping and embedding connection.

Further, the first clamping sleeve and the second clamping sleeve are fixed through a fixing mechanism, the fixing mechanism comprises a first lug seat, a second lug seat and a fixing bolt, the first lug seat is welded and fixed on the upper portions of the first side plates on the other two sides of the bottom plate, the second lug seat is welded and fixed on the upper portions of the second side plates on the other two sides of the top plate, the first lug seat and the second lug seat are identical in size, and the fixing bolt can penetrate through the first lug seat and the second lug seat and is in threaded connection with the corresponding nut.

Furthermore, the end part of the sealing sleeve is provided with a limiting ring, a gradual inclined plane is arranged between the sealing sleeve and the limiting ring, the outer surface of the sealing sleeve is sleeved with a sealing sponge, one end of the sealing sleeve, which is far away from the limiting ring, is in threaded connection with a fastening nut piece, and the diameter of the fastening nut piece is larger than the caliber of the sleeve.

Furthermore, the inner ring of the sealing sponge is matched with the gradual inclined plane, and the outer diameter of the sealing sponge is the same as that of the limiting ring.

The utility model has the advantages of:

the utility model discloses a closed sampling device of sodium valve through set up the seal sleeve pipe in sheathed tube inside, at the in-process of sodium valve installation, the seal sleeve pipe carries out threaded connection with the both ends pipeline of sodium valve, through rotating fastening nut spare to drive the spacing ring and press from both sides the cover one and press from both sides the cover two and support tightly each other, thereby realize that sealed sponge fills sheathed tube clearance, prevent that sampling device gas from leaking, cause measurement accuracy to reduce.

Drawings

Fig. 1 is a schematic structural view of a closed sampling device of a sodium valve of the present invention;

FIG. 2 is a schematic view of a structure of a jacket according to the present invention;

fig. 3 is a sectional view of the sealing sleeve structure of the present invention;

fig. 4 is a schematic diagram of the sleeving between the sealing sleeve and the sodium valve pipeline of the present invention.

In the figure, 1, a base; 2. a first jacket; 3. a second jacket; 4. a sleeve; 401. a first pipe member; 402. a second pipe member; 5. a fixing mechanism; 501. a first ear mount; 502. a second ear mount; 503. fixing the bolt; 6. a limiting groove; 7. sealing the sleeve; 701. a limiting ring; 702. a gradual slope; 703. sealing the sponge; 704. and fastening the nut piece.

Detailed Description

In the description of the present invention, it is to be understood that the terms "left end", "right end", "above", "below", "outside", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, a closed sampling device of a sodium-cooled fast reactor sodium valve comprises a base 1, a first jacket 2, a second jacket 3, a sleeve 4 and a sealing sleeve 7, wherein the first jacket 2 is fixedly connected to the base 1, and the first jacket 2 and the second jacket 3 are detachably connected to form a chamber which is a relatively sealed container; the two opposite sides of the cavity are provided with a sleeve 4 in which a sealing sleeve 7 is movably sleeved; a through valve rod round hole is formed in the center of the top of the cavity, so that the valve rod can smoothly pass through the outside of the cavity, and meanwhile, the valve rod is convenient to disassemble and assemble; a sampling tube is arranged at the center of the bottom of the chamber to improve the representativeness of the sampling as much as possible; the valve rod circular hole is opposite to the central position of the sampling tube; the valve rod circular hole is matched with a valve rod of the sodium valve, the valve rod of the sodium valve is ideally cylindrical, the valve rod is ensured to be leaked out of the cavity, and meanwhile, a leakage point of the valve body is located in the cavity.

The first clamping sleeve 2 comprises a bottom plate and a first side plate which is respectively vertically connected to the periphery of the bottom plate in sequence, and a cavity with an open top is formed between the bottom plate and the first side plate.

The second jacket 3 comprises a top plate and second side plates which are respectively vertically connected to the periphery of the top plate in sequence, and a cavity with an opening at the bottom is formed between the top plate and the second side plates.

The first side plate upper portion of connecting perpendicularly in the relative both sides of bottom plate is equipped with the just right first arc spread groove in the centre of a circle, and the perpendicular second side plate upper portion of connecting in the relative both sides of roof is equipped with the just right second arc spread groove in the centre of a circle, and the size of first arc spread groove and second arc spread groove is the same, is semi-circular breach, when first arc spread groove and second arc spread groove align, forms the circular port.

The first side plate of perpendicular connection in the relative both sides of bottom plate is respectively from first arc spread groove outwards protruding welded fastening first sleeve 401, the second side plate of perpendicular connection in the relative both sides of roof is respectively from second arc spread groove outwards protruding welded fastening second sleeve 402, first sleeve 401 is the same with the size of second sleeve 402, be the half hollow cylinder that the diameter is the same with first arc spread groove/second arc spread groove, when first half sleeve 401 aligns with second half sleeve 402, form the sleeve 4 of hollow cylinder shape.

Be equipped with the sampling tube on the bottom plate, be equipped with the valve rod round hole that link up on the roof, valve rod round hole and sampling tube central point put just right, and the valve rod round hole is with the circular parcel of valve rod of sodium valve, and the valve rod round hole cup joints the in-process with the valve rod, and the clearance stopper between valve rod round hole and the valve rod has the sponge stopper to reduce the clearance between valve rod round hole and the valve rod, thereby realize sealed effect.

The opening part of the first jacket 2 is provided with a limiting groove 6, the corresponding position of the second jacket 3 is provided with a limiting convex strip matched with the limiting groove 6, and the first jacket 2 and the second jacket 3 realize limitation through the limiting groove 6 and the limiting convex strip. Specifically, the outer tip of the first curb plate of perpendicular connection in the other both sides of bottom plate is equipped with spacing groove 6, and the outer tip of the second curb plate of perpendicular connection in the other both sides of roof is equipped with spacing sand grip, and spacing groove 6 matches each other with spacing sand grip and forms the inlay card and connect, and first clamp cover 2 and second clamp cover 3 realize spacingly through spacing groove 6 and spacing sand grip.

The first clamping sleeve 2 and the second clamping sleeve 3 are fixed through the fixing mechanism 5, the fixing mechanism 5 comprises a first lug seat 501, a second lug seat 502 and a fixing bolt 503, the first lug seat 501 is fixedly welded on the upper portions of the first side plates on the other two sides of the bottom plate, the second lug seat 502 is fixedly welded on the upper portions of the second side plates on the other two sides of the top plate, the first lug seat 501 and the second lug seat 502 are identical in size, and when the first lug seat 501 and the second lug seat 502 are aligned, the fixing bolt 503 penetrates through the first lug seat 501 and the second lug seat 502 and is in threaded connection with a corresponding nut, so that the first clamping sleeve 2 and the second clamping sleeve 3 are fixedly connected.

The end part of the sealing sleeve 7 is provided with a limit ring 701, a gradual slope 702 is arranged between the sealing sleeve 7 and the limit ring 701, the outer surface of the sealing sleeve 7 is sleeved with a sealing sponge 703, one end of the sealing sleeve 7, which is far away from the limit ring 701, is in threaded connection with a fastening nut piece 704, and the diameter of the fastening nut piece 704 is larger than the caliber of the sleeve 4.

The inner ring of the sealing sponge 703 is matched with the gradual slope 702, the outer diameter of the sealing sponge 703 is the same as that of the limit ring 701, and the limit ring 701 is driven to abut against the first jacket 2 and the second jacket 3 by rotating the fastening nut 704, so that the gap of the sleeve 4 is filled by the sealing sponge 703, and gas leakage of the sampling device is prevented.

When the closed sampling device of the sodium-cooled fast reactor sodium valve is used, the method comprises the following steps:

1. the nut is loosened, the fixing bolt 503 is removed, and the first collet 2 and the second collet 3 are separated by vertical force.

2. Installing and fixing a sodium valve pipeline and a sampling pipe, simultaneously connecting a sealing sleeve 7 with pipelines at two ends of a sodium valve in a threaded manner, after a proper position is adjusted, placing a limiting convex strip into a limiting groove 6, and enabling the limiting convex strip and the limiting groove 6 to form clamping and embedding connection, so that the first jacket 2 and the second jacket 3 are limited; the fixing bolt 503 penetrates the first ear seat 501 and the second ear seat 502, the nut is tightened, and the fixing bolt 503 is in threaded connection with the nut, so that the first clamping sleeve 2 and the second clamping sleeve 3 are fastened.

3. Through rotating the fastening nut piece 704, the limiting ring 701 is driven to abut against the first jacket 2 and the second jacket 3, so that the sealing sponge 703 is filled in the gap of the sleeve 4, and gas leakage of the sampling device is prevented.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a closed sampling device of sodium-cooled fast reactor sodium valve which characterized in that, presss from both sides cover (3), sleeve pipe (4) and sealing sleeve pipe (7) including base (1), first cover (2) and second, fixed connection first cover (2) of pressing from both sides is gone up in base (1), first cover (2) and second press from both sides cover (3) and can dismantle the connection and form a cavity, the relative both sides of cavity are equipped with sleeve pipe (4) that inside activity cup jointed sealing sleeve pipe (7), the cavity top is equipped with the valve rod round hole that link up, the cavity bottom is equipped with the sampling tube, valve rod round hole and sampling tube central point put just right, the valve rod round hole matches with the valve rod of sodium valve.

2. The closed sampling device of the sodium-cooled fast reactor sodium valve as claimed in claim 1, wherein a limiting groove (6) is arranged at the opening of the first jacket (2), a limiting convex strip is arranged at the opening of the second jacket (3), and the limiting groove (6) is matched with the limiting convex strip.

3. The enclosed sampling device of the sodium-cooled fast reactor sodium valve of claim 1, wherein the first jacket (2) comprises a bottom plate and a first side plate which are respectively vertically connected to the periphery of the bottom plate in sequence, a top-opening chamber is formed between the bottom plate and the first side plate, the second jacket (3) comprises a top plate and a second side plate which are respectively vertically connected to the periphery of the top plate in sequence, and a bottom-opening chamber is formed between the top plate and the second side plate.

4. The closed sampling device of the sodium-cooled fast reactor sodium valve as claimed in claim 3, wherein the upper part of the first side plate vertically connected to the two opposite sides of the bottom plate is provided with a first arc-shaped connecting groove with a right center, the upper part of the second side plate vertically connected to the two opposite sides of the top plate is provided with a second arc-shaped connecting groove with a right center, the first arc-shaped connecting groove and the second arc-shaped connecting groove have the same size, and the first arc-shaped connecting groove and the second arc-shaped connecting groove are combined to form a circular hole.

5. The enclosed sampling device of the sodium-cooled fast reactor sodium valve of claim 4, wherein the first side plates vertically connected to two opposite sides of the bottom plate respectively protrude from the first arc-shaped connecting grooves to weld and fix the first sleeves (401), the second side plates vertically connected to two opposite sides of the top plate respectively protrude from the second arc-shaped connecting grooves to weld and fix the second sleeves (402), the first sleeves (401) and the second sleeves (402) have the same size, and the first sleeves (401) and the second sleeves (402) are combined to form the sleeves (4).

6. The closed sampling device of the sodium-cooled fast reactor sodium valve as claimed in claim 2, wherein a sampling tube is arranged on the bottom plate, a through valve rod round hole is arranged on the top plate, and a sponge plug is plugged in a gap between the valve rod round hole and a valve rod of the sodium valve.

7. The closed sampling device of the sodium-cooled fast reactor sodium valve as claimed in claim 2, wherein the end of the first side plate vertically connected to the other two sides of the bottom plate is provided with a limiting groove (6), the end of the second side plate vertically connected to the other two sides of the top plate is provided with a limiting convex strip, and the limiting groove (6) and the limiting convex strip are matched with each other to form a snap-fit connection.

8. The closed sampling device of the sodium-cooled fast reactor sodium valve is characterized in that the first jacket (2) and the second jacket (3) are fixed through a fixing mechanism (5), the fixing mechanism (5) comprises a first lug seat (501), a second lug seat (502) and a fixing bolt (503), the first lug seat (501) is welded and fixed on the upper portions of the first side plates on the other two sides of the bottom plate, the second lug seat (502) is welded and fixed on the upper portions of the second side plates on the other two sides of the top plate, the first lug seat (501) and the second lug seat (502) are the same in size, and the fixing bolt (503) can penetrate through the first lug seat (501) and the second lug seat (502) and is in threaded connection with a corresponding nut.

9. The closed sampling device of the sodium-cooled fast reactor sodium valve according to any one of claims 1 to 8, characterized in that a limit ring (701) is arranged at the end of the sealing sleeve (7), a gradual slope (702) is arranged between the sealing sleeve (7) and the limit ring (701), a sealing sponge (703) is sleeved on the outer surface of the sealing sleeve (7), a fastening nut piece (704) is connected to one end of the sealing sleeve (7) far away from the limit ring (701) in a threaded manner, and the diameter of the fastening nut piece (704) is larger than the caliber of the sleeve (4).

10. The closed sampling device of the sodium-cooled fast reactor sodium valve is characterized in that the inner ring of the sealing sponge (703) is matched with the gradual slope (702), and the outer diameter of the sealing sponge (703) is the same as that of the limiting ring (701).