CN218207843U

CN218207843U - Sodium-air heat exchange air door of nuclear power sodium-cooled fast reactor

Info

Publication number: CN218207843U
Application number: CN202221759963.6U
Authority: CN
Inventors: 张宇景; 高博; 刘盛; 李泽山; 马成武
Original assignee: Lanzhou Changxin Electrical Power Equipment Co ltd; Lanzhou Jiaotong University
Current assignee: Lanzhou Changxin Electrical Power Equipment Co ltd; Lanzhou Jiaotong University
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2023-01-03
Anticipated expiration: 2032-07-08

Abstract

The utility model discloses a nuclear power sodium-cooled fast reactor sodium-air heat exchange air door belongs to air door technical field, specifically includes: main part, baffle, drive shaft, U type sealing strip, sealing ring, nut, gasket, link means, the main part passes through the drive shaft connection cooperation with the baffle, and four baffles are connected to a main part, the baffle is the bilayer and arranges to guarantee good heat-proof quality, the welding has the U type recess cooperation on U type sealing strip and the baffle in the main part, screw thread and nut cooperation are passed through at the drive shaft both ends, provide the pretightning force through screwing up both ends nut to guarantee the good leakproofness of air door, there is the external splines in the drive shaft, and the baffle center is provided with the internal spline, the drive shaft passes through the axle with the baffle through the spline cooperation and drives the baffle rotation, and is convenient for install and dismantle, will realize synchronous drive with two transaxle hub connections of arranging on the same floor through link means, the utility model provides an air door leakproofness and thermal-insulated poor, the inconvenient problem of dismouting.

Description

Sodium-air heat exchange air door of nuclear power sodium-cooled fast reactor

Technical Field

The utility model relates to an air door technical field, in particular to nuclear power sodium-cooled fast reactor sodium-air heat exchange air door.

Background

The air door of the sodium-air heat exchanger is a key core component of a reactor core waste heat discharge system of the fourth-generation nuclear power sodium-cooled fast reactor. The opening degree of the inlet and the outlet of the sodium-air heat exchanger is mainly controlled, the exchange between the heat of the loop sodium and air is realized, and the accident waste heat is discharged into the atmosphere.

The air door of the sodium-air heat exchanger is a key core device for ensuring the heat exchange work of the sodium-air heat exchanger. The traditional nuclear power air door is mostly in a single-blade form under the heat preservation working condition. Under the condition that the air door is closed, hot air is easy to leak, and heat loss is serious. The electric heating time and efficiency of the sodium-air heat exchanger are influenced, and the disassembly and the assembly are very inconvenient. Therefore, a sodium-air heat exchange air door of the nuclear power sodium-cooled fast reactor is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

An object of the utility model is to provide a nuclear power sodium-cooled fast reactor sodium-air heat exchange air door to solve the problem that provides in the background art.

2. Technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a nuclear power sodium-cooled fast reactor sodium-air heat exchange air door, includes main part, baffle, drive shaft, goes up U type sealing strip, lower U type sealing strip, sealing ring, nut, gasket, link means, the main part left side is equipped with and is two lines of four left-turn holes that distribute, and the right side is equipped with four right-turn holes with left-turn hole symmetry for realize being connected with the cooperation of four drive shafts, the cooperation of four baffles and main part is realized through four drive shafts to the main part, the baffle divides two-layer and main part cooperation, and every layer respectively has two baffles, and double-deck design has good heat-proof quality, can realize fine heat preservation effect, every baffle upside is equipped with the sealed recess of last U type and the cooperation of the last U type sealing strip contact of welding in the main part, U type sealed recess and the cooperation of the lower U type sealing strip of welding in the main part under every baffle downside is equipped with to strengthen the leakproofness of this air door.

Further, be provided with the internal spline on the baffle centre bore, the drive shaft middle section is provided with the external spline, and both pass through spline fit connection, drive the baffle through the drive shaft and rotate the switching that realizes the air door.

Furthermore, the aperture size in main part turn right hole is the same with the diameter size of drive shaft, the aperture size in main part turn left hole is the same with the external diameter size of external splines on the drive shaft for during drive shaft and main part installation from main part turn left hole pass through from main part turn right hole and wear out.

Furthermore, the length of the middle section spline of the driving shaft is the same as that of the baffle, and the middle section spline of the driving shaft is used for realizing right side positioning of the driving shaft.

Furthermore, both ends all are equipped with the external screw thread about the drive shaft, through threaded connection and nut cooperation, realize the left side location of drive shaft.

Furthermore, when the air door is closed, the nut is screwed to increase the pretightening force, so that the driving shaft is prevented from rotating, and the sealing performance of the air door is further enhanced.

Furthermore, the sealing ring is installed with main part left turn hole cooperation part in the drive shaft left end, main part right turn hole and drive shaft right-hand member contact cooperation realize sealed effect.

Furthermore, the right ends of the driving shafts connect the two driving shafts on the same layer with each other through a connecting rod device, the connecting rod device drives the two driving shafts on the same layer to synchronously rotate, and the right ends of the driving shafts can be connected with external driving equipment.

3. Advantageous effects

Compared with the prior art, the utility model provides a nuclear power sodium-cooled fast reactor sodium-air heat exchange air door possesses following beneficial effect:

(1) This air door is connected through main part and four baffles cooperations, divides two-layer to arrange, can guarantee when the air door is in the closed condition, can have fine thermal-insulated effect, strengthens the heat insulating ability of this air door.

(2) Every baffle upside of this air door all is equipped with the sealed recess of U type, every baffle downside all is equipped with down the sealed recess of U type, when the air door is in the closed condition, the welding in the main part last U type sealing strip and the welding in the main part down the U type sealing strip respectively with the sealed recess of the last U type of baffle and the sealed recess contact cooperation of lower U type, realize the comprehensive between baffle and main part sealed, and pass through threaded connection and nut cooperation through the drive shaft both ends, provide the pretightning force through screwing up both ends nut, further strengthen sealed effect, turn to the hole and drive shaft left end cooperation part installation sealing ring on a left side through the main part, main part turn to the hole and drive shaft right-hand member contact cooperation, realize the sealed in the main part that turns to the hole, very big reinforcing the leakproofness of this air door.

(3) The baffle and the drive shaft of this air door pass through the external splines cooperation of the internal splines on the baffle centre bore and drive shaft middle section, and the drive shaft drives the baffle and rotates, can make drive shaft and baffle easy dismounting, the dismouting of the air door of being convenient for through the spline cooperation.

Drawings

Fig. 1 is a schematic perspective view of the damper of the present invention when opened;

fig. 2 is a schematic perspective view of the air door of the present invention when closed;

FIG. 3 is a schematic structural view of a baffle plate of the present invention;

FIG. 4 is a side sectional view of the present invention;

FIG. 5 is an enlarged view of the point A in FIG. 4 according to the present invention;

fig. 6 is an enlarged view of the utility model at B in fig. 4;

fig. 7 is a cross-sectional view of the mating surface of the drive shaft and the main body of the present invention;

fig. 8 is an enlarged view of the present invention at C in fig. 7.

In the figure, 1, main body; 101. a left-hand hole; 102. a right-hand hole; 2. a baffle plate; 201. an upper U-shaped sealing groove; 202. a lower U-shaped sealing groove; 203. a central bore; 204. an internal spline; 3. a drive shaft; 301. an internal spline; 302. an external thread; 4. installing a U-shaped sealing strip; 5. a lower U-shaped sealing strip; 6. a seal ring; 7. a nut; 8. a gasket; 9. a linkage arrangement.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-8, the present invention provides the following technical solutions: the utility model provides a nuclear power sodium-cooled fast reactor sodium-air heat exchange air door, includes main part 1, baffle 2, drive shaft 3, goes up U type sealing strip 4, lower U type sealing strip 5, sealing ring 6, nut 7, gasket 8, link means 9, main part 1 on the left side be equipped with four be two rows and two four turn left holes 101 that distribute, main part 1 right side is equipped with four turn right holes 102 corresponding with the left side, main part 1 cooperatees with four drive shaft 3 respectively through turn left hole 101 and turn right hole 102, baffle 2 is connected to every drive shaft 3, baffle 2 cooperatees with main part 1, main part 1 cooperatees with four baffle 2 altogether, and divide two-layer cooperation, and every layer respectively has two baffle 2 and main part 1 to cooperate.

The 2 upside of baffle is equipped with the sealed recess of last U type 201 and the contact cooperation of the last U type sealing strip 4 of welding on

main part

1, 2 downside of baffle are equipped with down the sealed recess of U type 202 and the contact cooperation of the lower U type sealing strip 5 of welding on main part 1.

The aperture size of the main body 1 right-turning hole 102 is the same as the diameter size of the driving shaft 3, the aperture size of the main body 1 left-turning hole 101 is the same as the outer diameter size of the external spline 301 on the driving shaft 3, and the driving shaft 3 penetrates into the main body 1 left-turning hole 101 and penetrates out of the main body right-turning hole 102 when the driving shaft 3 is matched with the main body 1.

Be provided with internal spline 204 on the 2 centre holes 203 of baffle, 3 middle sections of drive shaft are provided with external spline 301, and both pass through spline fit connection, drive baffle 2 through drive shaft 3 and rotate the switching that realizes the air door.

The length of the external spline 301 arranged in the middle section of the driving shaft 3 is the same as that of the baffle 2, and the right end of the driving shaft 3 can be positioned on the right side of the driving shaft 3 by the contact of the external spline 301 and the main body 1.

Both ends are equipped with external screw thread 302 about drive shaft 3, and nut 7 and gasket 8 realize drive shaft 3's left side location through threaded connection and the cooperation of drive shaft 3, and provide the pretightning force for the air door, strengthen the sealed effect of air door.

Sealing ring 6 is installed to main part 1 left turn hole 101 and the left end cooperation part of drive shaft 3, main part 1 right turn hole 102 and the right-hand member contact cooperation of drive shaft 3 realize the sealed of main part 1 last left turn hole 101 and right turn hole 102.

The right ends of the two driving shafts 3 on the same layer are connected with the connecting rod device 9, the connecting rod device 9 drives the two driving shafts 3 on the same layer to synchronously rotate, the air door can be opened and closed at high efficiency, and the number of external driving devices can be reduced.

The working principle is as follows: firstly, aligning a central hole 203 of a baffle plate 2 with a left-turning hole 101 and a right-turning hole 102 on a main body 1, penetrating a driving shaft 3 into the left-turning hole 101 on the main body 1 to be matched with the baffle plate 2 through splines and then penetrating out of the right-turning hole 102 on the main body 1, matching the part of the right end of the driving shaft 3 penetrating out of the main body 1 with a nut 7 and a gasket 8 through threaded connection, then connecting a connecting rod device 9, matching the left end of the driving shaft 3 with the nut 7 and the gasket 8 through threaded connection to realize the matching of the baffle plate 2 with the main body 1 and the driving shaft 3, contacting and matching the right end of the driving shaft 3 with the right-turning hole 102 on the main body 1, installing a sealing ring 6 at the matching part of the left end of the driving shaft 3 with the left-turning hole 101 on the main body 1 to realize the sealing of the right-turning hole 102 and the left-turning hole 101, 3 right-hand members of drive shaft pass through external splines 301 and the contact of 1 inner wall of main part, the left end passes through screw thread and positioning nut and gasket cooperation, realize drive shaft 3's location, 3 right-hand members of two drive shafts on the same floor are connected with link means 9, the drive rotates with two drive shafts 3 synchronous on the same floor, arbitrary external drive equipment of connection drives drive shaft 3 and rotates in two drive shafts 3 on the same floor, drive shaft 3 drives baffle 2 through the spline and rotates, realize the switching of air door, when closed state, the sealed recess 201 of last U type of 2 upsides of baffle and the cooperation of 4 contacts of last U type sealing strip of welding on main part 1, the sealed recess 202 of lower U type of baffle 2 downside and the cooperation of 5 contacts of lower U type sealing strip of welding on main part 1, and provide the pretightning force through screwing up both ends nut, the leakproofness of improvement air door that can be very big.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A sodium-air heat exchange air door of a nuclear power sodium-cooled fast reactor comprises: main part (1), baffle (2), drive shaft (3), go up U type sealing strip (4), lower U type sealing strip (5), sealing ring (6), nut (7), gasket (8), link means (9), its characterized in that: open on main part (1) the left side has and be two rows of four left-hand holes (101) that distribute, and open on the right side has and correspond four right-hand holes (102) respectively with the left side, main part (1) through left-hand hole (101) and right-hand hole (102) respectively with four drive shaft (3) cooperations, drive shaft (3) are connected baffle (2) and main part (1), baffle (2) upside has last U type sealing groove (201) and welding last U type sealing strip (4) contact cooperation on main part (1), baffle (2) downside has lower U type sealing groove (202) and welding lower U type sealing strip (5) contact cooperation on main part (1).

2. The sodium-air heat exchange air door of the nuclear power sodium-cooled fast reactor according to claim 1, characterized in that: the novel multifunctional combined type wall-mounted water purifier is characterized in that four baffles (2) are connected to the main body (1), the baffles (2) are arranged on the main body (1) in a double-layer mode, two baffles (2) are arranged on each layer, each baffle (2) is connected with the main body through one driving shaft (3), and the right ends of the two driving shafts (3) on the same layer are connected with each other through a connecting rod device (9).

3. The sodium-air heat exchange air door of the nuclear power sodium-cooled fast reactor according to claim 1, characterized in that: be provided with internal spline (204) in baffle centre bore (203) on baffle (2), drive shaft (3) middle section part is provided with external spline (301), baffle (2) are connected with drive shaft (3) through internal spline (204) and external spline (301) cooperation.

4. The sodium-air heat exchange air door of the nuclear power sodium-cooled fast reactor according to claim 1, characterized in that: the length of the external spline (301) on the driving shaft (3) is the same as that of the baffle (2).

5. The sodium-air heat exchange air door of the nuclear power sodium-cooled fast reactor according to claim 1, characterized in that: the aperture size of the right-turn hole (102) of the main body (1) is the same as the shaft diameter of the driving shaft (3), and the aperture size of the left-turn hole (101) of the main body (1) is the same as the outer diameter of the outer spline (301) on the driving shaft (3).

6. The sodium-air heat exchange air door of the nuclear power sodium-cooled fast reactor according to claim 1, characterized in that: drive shaft (3) right-hand member goes up right turn hole (102) contact cooperation with main part (1), the left end of drive shaft (3) realizes sealed cooperation through sealing ring (6) with left turn hole (101), both ends all are equipped with external screw thread (302) and nut (7) and gasket (8) and pass through the threaded connection cooperation about drive shaft (3).