Ventilation regulator, fast reactor top fixed shield and installation method thereof

Abstract

The embodiments of the present application provide a ventilation regulator, a fast reactor top fixed shield and an installation method thereof. The ventilation regulator includes: an annular valve cover, an outer ring body, a valve body and a sliding ring. The outer ring body is connected to the radial outer periphery of the annular valve cover. The valve body is connected to the radial inner periphery of the annular valve cover. The valve body, the outer ring body and the valve cover together form a valve cavity. The outer ring body is provided with a plurality of air inlets connected to the valve cavity along the circumferential direction. The peripheral wall of the valve body is provided with a plurality of air outlets connected to the valve cavity along the circumferential direction. The sliding ring is arranged in the valve cavity, and the sliding ring is provided with a plurality of ventilation openings along the circumferential direction. The sliding ring can rotate relative to the valve body, thereby changing the opening of the air outlet to adjust the air intake.

Description

Technical Field

[0001] The invention relates to a fast reactor top fixed shield, and in particular to a ventilation regulator, a fast reactor top fixed shield and an installation method thereof. Background Art

[0002] A large amount of heat is generated during the operation of the fast reactor, and part of the heat is transferred to the fixed shield on the top of the reactor. In order to cool the fixed shield on the top of the reactor, an annular air duct is set in the gap between the reactor container pipe and the fixed shield on the top of the reactor. In order to ensure uniform cooling of the fixed shield on the top of the reactor, the air volume of the annular air duct needs to be adjusted or controlled. Summary of the invention

[0003] In view of the above technical problems, the embodiment of the present application provides a ventilation regulator for adjusting the amount of air supplied to the annular air duct. The embodiment of the present application also provides a fast reactor top fixed shield having the ventilation regulator and an installation method thereof.

[0004] In a first aspect, an embodiment of the present application provides a fast reactor top fixed shielding ventilation regulator, comprising:

[0005] Annular valve cover;

[0006] An outer ring body connected to the radial outer peripheral edge of the annular valve cover;

[0007] a valve body connected to the radial inner peripheral edge of the annular valve cover, the valve body, the outer ring body and the valve cover together form a valve cavity, the outer ring body is circumferentially provided with a plurality of air inlets communicating with the valve cavity, and a peripheral wall of the valve body is circumferentially provided with a plurality of air outlets communicating with the valve cavity; and

[0008] A sliding ring is arranged in the valve cavity. The sliding ring is provided with a plurality of ventilation openings along the circumference. The sliding ring can rotate relative to the valve body, thereby changing the opening of the air outlet to adjust the air intake volume.

[0009] In a second aspect, an embodiment of the present application provides a fast reactor top fixed shield, including:

[0010] Merging cover;

[0011] A plurality of clearance holes for allowing a plurality of stack container pipes of a fast reactor to pass through, wherein an annular air duct is formed between each of the clearance holes and a corresponding stack container pipe; and

[0012] A plurality of ventilation regulators as described in the first aspect of the present application, each of the ventilation regulators is installed in one of the annular air ducts, and is used to adjust the flow rate of cooling air entering the annular air duct from the collector cover.

[0013] In a third aspect, an embodiment of the present application provides a method for installing a fast reactor top fixed shield, wherein the fast reactor top fixed shield is the fast reactor top fixed shield described in the second aspect of the present application, and the installation method comprises:

[0014] Installing the ventilation regulator on the annular air duct;

[0015] According to the air volume collected by the anemometer, the adjusting member of the ventilation regulator is used to drive the sliding ring of the ventilation regulator to rotate so as to adjust the opening of the air outlet;

[0016] When the opening of the air outlet meets the preset requirements, the adjusting member is removed, the sliding ring is locked, and then a patch plate is installed to cover the opening of the annular valve cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention.

[0018] Figure 1 is a schematic diagram of a partial structure of a fast reactor according to an embodiment of the present invention;

[0019] Figure 2 is a top view of a ventilation regulator according to an embodiment of the present invention;

[0020] Figure 3 is along Figure 2 A cross-sectional view in the AA direction is shown;

[0021] Figure 4 yes Figure 3 A partial enlarged view of area B is shown;

[0022] Figure 5 yes Figure 2 A top view of the annular valve cover shown;

[0023] Figure 6 yes Figure 5 A local enlarged view of the C region is shown;

[0024] Figure 7 is a partial cross-sectional view of a ventilation regulator according to another embodiment of the present invention;

[0025] Figure 8 yes Figure 7 a front view of the adjustment member shown;

[0026] Fig. 9 yes Figure 8 a top view of the adjustment member shown;

[0027] Fig.10 yes Figure 2 A top view of the patch shown.

[0028] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiment is one embodiment of the present invention, not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in this application should have the common meanings understood by persons having ordinary skills in the field to which the invention belongs.

[0031] In the description of the embodiments of the present invention, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] The embodiment of the present invention provides a stack top fixed shield ventilation regulator and a stack top fixed shield. The stack top fixed shield is used for Figure 1 In the fast reactor shown.

[0033] See also Figure 1 The fast reactor includes a stack container 400. The stack container 400 is arranged in the stack pit 300. A plug 500, a plurality of stack container pipes 600 and a stack top fixed shield 200 are arranged on the top of the stack container 400. The stack top fixed shield 200 is arranged on the radial outer side of the plug 500.

[0034] The stack top fixed shield 200 includes a collector cover 210 at the top and a shield box 220 located below the collector cover 210. An air duct is formed inside the stack top fixed shield 200 and between it and each stack container pipe 600. Cooling air enters the collector cover 210 from the air inlet pipe, and is distributed to each air duct after converging in the collector cover 210.

[0035] Specifically, the stack top fixed shield 200 is formed with a plurality of make way holes for a plurality of stack container pipes 600 to pass through, and an annular air duct 201 is formed between each make way hole and a corresponding stack container pipe 600 .

[0036] The ventilation regulator 100 provided in the embodiment of the present application is used to be installed in an annular air duct 201 , so as to adjust the flow rate of cooling air entering the annular air duct 201 from the collector cover 210 .

[0037] In some embodiments, the stack container nozzle 600 is used to install an intermediate heat exchanger and an independent heat exchanger, and the ventilation regulator 100 is used to adjust the flow rate of cooling air for cooling the intermediate heat exchanger or the independent heat exchanger.

[0038] See also Figures 2 to 4 The ventilation regulator 100 provided in the embodiment of the present application includes: an annular valve cover 20, an outer ring body 30, a valve body 40, and a sliding ring 50.

[0039] The outer ring body 30 is connected to the radial outer peripheral edge of the annular valve cover 20. The valve body 40 is connected to the radial inner peripheral edge of the annular valve cover 20. The valve body 40, the outer ring body 30 and the annular valve cover 20 together form a valve cavity 42. The outer ring body 30 is provided with a plurality of air inlets 31 in communication with the valve cavity 42 along the circumferential direction. A plurality of air outlets 41 in communication with the valve cavity 42 are provided on the peripheral wall of the valve body 40 along the circumferential direction. The sliding ring 50 is arranged in the valve cavity 42, and the sliding ring 50 is provided with a plurality of vents 51 in the circumferential direction. The sliding ring 50 can rotate relative to the valve body 40, and by changing the relative position between the vents 51 and the air outlet 41, the opening of the air outlet 41 is changed to adjust the air intake.

[0040] The ventilation regulator 100 of the embodiment of the present application is used to be installed in the annular air duct 201 of the stack top fixed shield 200. The air inlet 31 of the ventilation regulator 100 is connected to the air duct in the collector 210, and the air outlet 41 is connected to the annular air duct 201, so as to adjust the flow rate of cooling air entering the annular air duct 201 and improve the overall cooling uniformity of the stack top fixed shield 200.

[0041] In some embodiments, a boss is radially extended outward from the lower end of the valve body 40 , and the sliding ring 50 is slidably disposed on the boss.

[0042] A plurality of air inlets 31 are arranged at equal intervals along the circumferential direction on the peripheral wall of the outer ring body 30. A plurality of air outlets 41 are arranged at equal intervals along the circumferential direction on the peripheral wall of the valve body 40. A plurality of ventilation holes 51 are arranged at equal intervals along the circumferential direction on the peripheral wall of the sliding ring 50.

[0043] In some embodiments, the number of the air inlets 31, the air outlets 41, and the vents 51 are the same. In some embodiments, the number of the air inlets 31, the air outlets 41, and the vents 51 are 30 to 50. Within this number range, the flow rate of the cooling air entering the annular air duct 201 through each air inlet 31 and each air outlet 41 is more uniform, which is more conducive to uniform circumferential cooling of the stack container pipe 600.

[0044] In some embodiments, the air inlet 31 faces the air outlet 41, and the area of ​​the air inlet 31 is larger than the area of ​​the air outlet 41, which is beneficial to shorten the path of the cooling air in the valve cavity 42 and increase the flow rate of the cooling air. Figure 7 In some embodiments, the upper edge of the air inlet 31 is higher than the upper edge of the air outlet 41, and the lower edge of the air inlet 31 is lower than the lower edge of the air outlet 41, thereby further increasing the flow rate of the cooling air.

[0045] See also Figure 7 The upper edge of the vent 51 is substantially flush with the upper edge of the air outlet 41, and the lower edge of the air inlet 31 is substantially flush with the lower edge of the air outlet 41. Here, "substantially flush" means that the distance between the two does not exceed 5% of the height of the entire air outlet 41.

[0046] See also Figures 5 to 7 , at least one opening 21 is provided on the annular valve cover 20. The ventilation regulator 100 further includes: at least one adjusting member 80. The adjusting member 80 extends downward through the opening 21 into the valve cavity 42 and is connected to the sliding ring 50, and is used to drive the sliding ring 50 to rotate. Therefore, the operator can drive the adjusting member 80 to move in the opening 21, thereby driving the sliding ring 50 to rotate.

[0047] In some embodiments, the annular valve cover 20 is provided with two openings 21. The two openings 21 are relatively arranged on the same diameter of the annular valve cover 20. Accordingly, the ventilation regulator 100 includes two adjusting members 80. During operation, two operators simultaneously operate one adjusting member 80 respectively to drive the sliding ring 50 to rotate.

[0048] The opening 21 may extend along the circumference of the annular valve cover 20. It is easy to understand that the extension length of the opening 21 limits the adjustment range of the adjustment member 80.

[0049] See also Figure 8 and Fig. 9 The adjusting member 80 includes a rod 81 and a baffle 82 fixedly sleeved on the rod 81. The baffle 82 covers the opening 21 to prevent the cooling air in the collector 210 from entering the annular air duct 201 from the opening 21 and affecting the air volume adjustment. The lower end of the rod 81 extends downward to connect with the sliding ring 50. The upper end of the rod 81 protrudes from the baffle 82 to facilitate the operation of the operator.

[0050] The size of the baffle 82 is larger than the size of the opening 21 , so that when the rod 81 drives the sliding ring 50 to rotate, the baffle 82 keeps covering the opening 21 , thereby improving the accuracy of the ventilation regulator 100 in adjusting the air volume.

[0051] join Figure 7 The sliding ring 50 is provided with a mounting groove 52, and the adjusting member 80 is detachably inserted into the mounting groove 52, so that it is convenient to drive the sliding ring 50 to rotate on a fixed axis, and the adjusting member 80 can be removed when the opening of the air outlet 41 meets the preset requirements.

[0052] See also Fig.10 The ventilation regulator 100 further includes a patch plate 90. When the regulating member 80 is removed, the baffle plate 82 no longer blocks the opening 21. At this time, the patch plate 90 can be installed on the annular valve cover 20 to cover the opening 21. For example, the patch plate 90 can be detachably installed on the annular valve cover 20 by means of fasteners. The patch plate 90 can be, for example, an I-shaped.

[0053] In some embodiments, the ventilation regulator 100 further includes: an upper ring body 60 and a top cover 10. The upper ring body 60 extends upward from the top of the valve body 40. The radial inner peripheral edge of the top cover 10 is connected to the top of the upper ring body 60, and the radial inner peripheral edge of the top cover 10 is used to connect with the stack container pipe 600. The top cover 10, the upper ring body 60, the valve body 40 and the stack container pipe 600 together form an air duct 12 with a closed upper part and an open lower part. The cooling air in the valve cavity 42 that comes out through the air outlet 41 enters the air duct 12 to cool the stack container pipe 600.

[0054] When the ventilation regulator 100 is installed in the annular air duct 201 , the top cover 10 and the upper ring body 60 both extend upward to be higher than the collector cover 210 , thereby facilitating the installation of the ventilation regulator 100 in the annular air duct 201 .

[0055] See also Figure 4 The ventilation regulator 100 further includes a measuring channel 61. The measuring channel 61 is arranged on the peripheral wall of the upper ring body 60. The measuring channel 61 is communicated with the air duct 12 and is used for installing an anemometer 62.

[0056] When the ventilation regulator 100 is installed in the annular air duct 201, the measuring channel 61 is located above the collector 210. Since the anemometer 62 is installed on the upper ring body 60, the cable of the anemometer 62 does not need to pass through the collector 210, the shielding box 220 and the valve cavity 42 to enter the measuring channel 61, which is very convenient for the installation of the anemometer 62.

[0057] The measuring channel 61 may be disposed at the top of the peripheral wall of the upper ring body 60 so as to be as far away from the air outlet 41 as possible, thereby improving the accuracy of the measurement of the anemometer 62 .

[0058] The ventilation regulator 100 further includes a locking member 70 for locking the sliding ring 50 when the opening of the air outlet 41 meets a preset requirement, so as to keep the air outlet 41 at the current opening.

[0059] In some embodiments, the locking member 70 is a threaded fastener, and a plurality of positioning holes are respectively provided on the sliding ring 50 and the valve body 40. When the opening of the air outlet 41 meets the preset requirements, the sliding ring 50 is locked by the cooperation between the threaded fastener and the positioning hole. For example, the operator can screw the threaded fastener out of the positioning hole or screw the threaded fastener into the positioning hole through the opening 21.

[0060] The annular valve cover 20 is provided with a plurality of lifting ears 11 for lifting, so as to facilitate the ventilation regulator 100 to be installed as a whole in the annular air duct 201 by lifting.

[0061] The embodiment of the present application also provides a fast reactor top fixed shield.

[0062] See also Figure 1 The stack top fixed shield 200 includes: a collector cover 210, a plurality of make way channels, and a plurality of ventilation regulators 100 according to any embodiment of the present application.

[0063] The plurality of clearance holes are used for passing through the plurality of stack container pipes 600 of the fast reactor. An annular air duct 201 is formed between each clearance hole and a corresponding stack container pipe 600. Each ventilation regulator 100 is installed in an annular air duct 201 to adjust the flow rate of cooling air entering the annular air duct 201 from the collector cover 210.

[0064] Since the stack top fixed shield 200 of the embodiment of the present application has a ventilation regulator 100 installed in the annular air duct 201 of the stack top fixed shield 200 , the flow rate of cooling air entering the annular air duct 201 can be adjusted, thereby improving the uniformity of the overall cooling of the stack top fixed shield 200 .

[0065] Furthermore, the upper ring body 60 and the top cover 10 of the ventilation regulator 100 protrude upward from the collector cover 210, and the measuring channel 61 of the ventilation regulator 100 is located above the collector cover 210. The fast reactor top fixed shield 200 also includes: a plurality of anemometers 62, each of which is detachably mounted on the measuring channel 61 of a ventilation regulating valve. Since the anemometer 62 is mounted on the upper ring body 60, and the measuring channel 61 is located above the collector cover 210, the cable of the anemometer 62 can directly enter the measuring channel 61 from the outside without passing through the collector cover 210, the shielding box 220 and the valve cavity 42, which is very convenient for the installation of the anemometer 62.

[0066] The embodiment of the present application further provides a method for installing a fast reactor top fixed shield 200 . The fast reactor top fixed shield 200 is the fast reactor top fixed shield 200 of any embodiment of the present application. The installation method includes the following steps S1 to S4 .

[0067] S1. Install the ventilation regulator 100 in the annular air duct 201.

[0068] S2. According to the air volume collected by the anemometer 62 , the adjusting member 80 is used to drive the sliding ring 50 of the ventilation regulator 100 to rotate so as to adjust the opening of the air outlet 41 .

[0069] S3. When the opening of the air outlet 41 meets the preset requirement, the adjusting member 80 of the ventilation regulator 100 is removed.

[0070] S4, locking the sliding ring 50, and then installing the patch plate 90 to cover the opening 21 of the annular valve cover 20.

[0071] In step S1 , the ventilation regulator 100 may be hoisted above the annular air duct 201 by using the hoisting lugs and installed in the annular air duct 201 .

[0072] In step S2, the adjusting member 80 can be used to drive the sliding ring 50 to rotate, thereby adjusting the opening of the air outlet 41. The anemometer 62 can be used to measure the air volume entering the air duct 12, thereby determining whether the opening of the air outlet 41 meets the preset requirements. It is easy to understand that when the opening of the air outlet 41 meets the preset requirements, the air volume entering each air duct of the fast reactor top fixed shield 200 is more uniform, which is conducive to uniformly cooling the fast reactor top fixed shield 200.

[0073] In step S4, the sliding ring 50 and the valve body 40 can be locked by fasteners such as bolts to maintain the air outlet 41 at the current opening. After that, the patch plate is installed at the opening 21 by fasteners to seal the top of the valve cavity 42 to prevent the cooling air in the collector 210 from entering the annular air duct 201 from the opening 21, thereby improving the accuracy of the ventilation regulator 100 in adjusting the air volume.

[0074] Regarding the embodiments of the present invention, it should also be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0075] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A fast reactor top fixed shield ventilation regulator, the fast reactor top fixed shield comprises a collector and a plurality of make way holes for a plurality of stack container pipes of the fast reactor to pass through, and an annular air duct is formed between each of the make way holes and a corresponding one of the stack container pipes; The cooling air enters the collector cover from the air inlet pipe, converges in the collector cover and is then distributed to each air duct; The ventilation regulator is installed in one of the annular air ducts and is used to adjust the flow rate of cooling air entering the annular air duct from the collector cover; It is characterized in that The ventilation regulator comprises: Annular valve cover; An outer ring body connected to the radial outer peripheral edge of the annular valve cover; a valve body connected to the radial inner peripheral edge of the annular valve cover, the valve body, the outer ring body and the annular valve cover together form a valve cavity, the outer ring body is circumferentially provided with a plurality of air inlets communicating with the valve cavity, and a peripheral wall of the valve body is circumferentially provided with a plurality of air outlets communicating with the valve cavity; and A sliding ring is arranged in the valve cavity, the sliding ring is provided with a plurality of ventilation openings along the circumference, and the sliding ring can rotate relative to the valve body, thereby changing the opening of the air outlet to adjust the air intake; The air inlet of the ventilation regulator is connected to the air duct in the confluence cover, and the air outlet is connected to the annular air duct; The ventilation regulator comprises: an upper ring body extending upward from the top of the valve body; and a top cover, wherein the radial inner peripheral edge of the top cover is connected to the top of the upper ring body, and the radial inner peripheral edge of the top cover is used to connect to the stack container pipe; The top cover, the upper ring body, the valve body and the stack container pipe together form an air duct with a closed upper portion and an open lower portion; The ventilation regulator comprises: a measuring channel, which is arranged on the peripheral wall of the upper ring body, the measuring channel is communicated with the air duct and is used for installing an anemometer; The upper ring body and the top cover protrude upward from the collecting cover, and the measuring channel is located above the collecting cover.

2. The ventilation regulator according to claim 1, characterized in that The annular valve cover is provided with at least one opening. The ventilation regulator further includes: at least one adjusting member, which extends downwardly through the opening into the valve cavity and is connected to the sliding ring to drive the sliding ring to rotate.

3. The ventilation regulator according to claim 2, characterized in that The opening extends along the circumference of the annular valve cover. The adjusting member comprises a rod and a baffle fixedly sleeved on the rod, wherein the baffle cover is arranged on the opening, and the lower end of the rod extends downward to be connected with the sliding ring.

4. The ventilation regulator according to claim 3, characterized in that The size of the baffle is larger than the size of the opening, so that when the rod drives the sliding ring to rotate, the baffle keeps covering the opening.

5. The ventilation regulator according to claim 2, characterized in that: The sliding ring is provided with a mounting groove. The adjusting member is detachably inserted into the mounting groove.

6. The ventilation regulator according to claim 1, characterized in that Also includes: The locking member is used to lock the sliding ring when the opening of the air outlet meets the preset requirement.

7. The ventilation regulator according to claim 6, characterized in that The locking member is a threaded fastener, The sliding ring and the valve body are respectively provided with a plurality of positioning holes. When the opening of the air outlet meets the preset requirements, the sliding ring is locked by the cooperation of the threaded fasteners and the positioning holes.

8. The ventilation regulator according to claim 2, characterized in that The annular valve cover is provided with a plurality of lifting ears for lifting.

9. A fast reactor top fixed shield, characterized in that: include: Merging cover; A plurality of clearance holes for passing through a plurality of stack container pipes of a fast reactor, wherein an annular air duct is formed between each of the clearance holes and a corresponding stack container pipe; as well as A plurality of ventilation regulators according to any one of claims 1 to 8, each of which is installed in one of the annular air ducts and is used to adjust the flow rate of cooling air entering the annular air duct from the collector cover.

10. The fast reactor top fixed shield according to claim 9, characterized in that: The upper ring body and the top cover of the ventilation regulator protrude upward from the collector cover, and the measurement channel of the ventilation regulator is located above the collector cover. The fast reactor top fixed shield further comprises: a plurality of anemometers, each of which is detachably mounted on a measuring channel of the ventilation regulator.

11. A method for installing a fixed shield on the top of a fast reactor, characterized in that: The fast reactor top fixed shield is the fast reactor top fixed shield according to claim 9 or 10, and the installation method comprises: Installing the ventilation regulator on the annular air duct; According to the air volume collected by the anemometer, the adjusting member of the ventilation regulator is used to drive the sliding ring of the ventilation regulator to rotate so as to adjust the opening of the air outlet; When the opening of the air outlet meets the preset requirements, the adjusting member is removed, the sliding ring is locked, and then a patch plate is installed to cover the opening of the annular valve cover.

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