CN115206565A

CN115206565A - Multifunctional flow-blocking and air-locking device and method

Info

Publication number: CN115206565A
Application number: CN202210827434.3A
Authority: CN
Inventors: 马晓珑; 祁沛垚; 赵阳; 韩传高
Original assignee: Xian Thermal Power Research Institute Co Ltd
Current assignee: Xian Thermal Power Research Institute Co Ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-10-18

Abstract

The invention discloses a multifunctional choke air-locking device and a method, wherein the device comprises a ball inlet, a spoiler shell, a spoiler rotating disc, a first ball collecting port, a broken ball collecting port, a second ball collecting port, a ball inlet guide rail, a first volleyball guide rail and a second volleyball guide rail; the method comprises the following steps: when the ball enters the device from the ball inlet, crushed balls, scraps and dust entering along with the ball fall into the lower part of the flow plug shell when passing through the ball guide rail and are discharged through the crushed ball collecting port; when the ball needs to enter the first ball receiving port, the spoiler rotating disc is driven by the rotating shaft to rotate anticlockwise, and when the second round hole and the first volleyball guide rail are opposite to the first ball receiving port, the ball falls into the first ball receiving port; when the ball needs to enter the second ball collecting opening, the spoiler rotating disc rotates clockwise under the driving of the rotating shaft, and when the third round hole and the second volleyball guide rail are opposite to the second ball collecting opening, the ball falls into the second ball collecting opening. The invention has the functions of the distributor, the flow plug and the ball crushing separator, and reduces the quantity of system equipment and fault points.

Description

Multifunctional flow-blocking and air-locking device and method

Technical Field

The invention belongs to the technical field of emerging energy and nuclear power industries, and particularly relates to a multifunctional flow-choking and gas-locking device and method.

Background

The main function of the high-temperature gas-cooled reactor fuel loading and unloading system is to measure the fuel ball discharged from the reactor, detect whether the fuel ball has use value or not, return the fuel ball to the reactor when the fuel ball has use value, and discharge the fuel ball to the spent fuel system when the fuel ball has no use value, and the fuel ball distributor realizes the function.

The reactor is characterized in that fuel spheres and graphite spheres are filled in the atmospheric environment, spent fuel spheres and graphite spheres are discharged from the high-temperature high-pressure helium environment of the reactor, the separation of two environments (different medium gases, different pressures and different temperatures) is realized while the sphere filling and the sphere discharging are realized, and the flow plug is a device for realizing material transmission on the premise of not communicating the two environments.

Dust, debris and crushed balls are difficult to avoid in the process of loading and unloading fuel balls, and the crushed ball separator is a device for discharging the dust, the debris and the crushed balls out of a system.

The distributor, the flow plug and the crushed ball separator adopted by the current high-temperature gas cooled reactor demonstration power station have the following problems:

(1) The system has more equipment, each link has possible fault, and the system fault rate is high;

(2) The ball cup of the flow plug can not effectively discharge graphite dust and crushed balls;

(3) The graphite dust and the crushed balls remained in the ball cup of the flow damper are lifted to increase the graphite balls entering the ball cup, and the whole graphite balls are easily crushed and broken in the rotation process of the flow damper;

(4) When the flow damper damages the graphite nodules, the damage can be continuously worsened, shutdown maintenance is needed, the running safety of a unit is affected, and the risk that personnel are irradiated is increased.

Disclosure of Invention

The invention aims to provide a multifunctional flow-resisting and air-locking device and a method aiming at the defects of the prior art.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

a multifunctional flow blocking and air locking device comprises a ball inlet, a flow blocking device shell, a flow blocking device rotary table, a first ball collecting port, a broken ball collecting port, a second ball collecting port, a ball inlet guide rail, a first volleyball guide rail and a second volleyball guide rail;

the diameter of a ball passing through the device is B, the shell of the flow plug is a cylindrical shell with the inner diameter of C, the value of C is 5B to 6B, the inner diameters of the ball inlet, the first ball receiving port and the second ball receiving port are A, the value of A is 1.03B to 1.5B, the shell of the flow plug is divided into an upper part and a lower part, the ball inlet, the first ball receiving port and the second ball receiving port are arranged on the circumferential central plane of a cylinder at the upper part of the shell of the flow plug, the inner diameter of the broken ball collecting port is A, and the broken ball collecting port is arranged on the circumferential central plane of the cylinder at the lower part of the shell of the flow plug;

the spoiler rotating disc is arranged in the spoiler shell and is in clearance fit with the spoiler shell, so that the spoiler rotating disc can be ensured to rotate freely in the spoiler shell, and a sealing effect can be achieved; the circular ring of the flow plug turntable is circumferentially provided with 3 round holes with the diameter of A, a first round hole is opposite to the ball inlet guide rail, a second round hole is opposite to the first volleyball guide rail, a third round hole is opposite to the second volleyball guide rail, and the three round holes are in smooth transition connection with the three guide rails; the center of the rotating disc of the flow plug is connected with a rotating shaft.

A further development of the invention is that the choke housing is mounted at an angle of inclination of 30 ° to 90 °.

The invention is further improved in that the inner surface of the upper part of the flow plug shell is smooth, and the upper part cylinder and the lower part cylinder are connected in a sealing way through the flange.

In a further development of the invention, the cylinder height of the spoiler housing is greater than 2.6A and the cylinder thickness of the upper part of the spoiler housing is 1.4A.

The ball inlet guide rail, the first ball-discharging guide rail and the second ball-discharging guide rail are square frames formed by four cylinders, the outer diameter of each cylinder is 0.1-0.3B, the distance between every two adjacent cylinders is 0.9B, and balls with the diameter smaller than 0.9B can be guaranteed to leak out of the square frames.

The ball inlet guide rail, the first ball-discharging guide rail and the second ball-discharging guide rail are made of materials with hardness smaller than that of balls, so that the balls are prevented from being damaged in the ball passing process.

The invention is further improved in that the spoiler rotating disc is a circular ring with the thickness of 1.4A and the outer diameter smaller than C, the wall thickness of the circular ring meets the strength requirement of the spoiler rotating disc, the spoiler rotating disc does not deform in the rotating process, and the outer surface of the spoiler rotating disc is smooth.

The invention is further improved in that the spoiler rotating disc is connected to an actuating mechanism capable of bidirectional motion through a rotating shaft.

The invention is further improved in that when the ball inlet is opposite to the first round hole and the ball inlet guide rail, the second round hole and the third round hole are sealed by the spoiler shell, when the first ball collecting port is opposite to the second round hole and the first ball exhaust guide rail, the first round hole and the third round hole are sealed by the spoiler shell, and when the second ball collecting port is opposite to the third round hole and the second ball exhaust guide rail, the second round hole and the first round hole are sealed by the spoiler shell.

A multi-functional choke and air-lock method based on the multi-functional choke and air-lock device, comprising:

when the ball enters the device from the ball inlet, crushed balls, scraps and dust entering along with the ball fall into the lower part of the spoiler shell when passing through the ball guide rail and are discharged through the crushed ball collecting port;

when the ball needs to enter the first ball receiving port, the spoiler rotating disc is driven by the rotating shaft to rotate anticlockwise, and when the second round hole and the first volleyball guide rail are opposite to the first ball receiving port, the ball falls into the first ball receiving port;

when the ball needs to enter the second ball collecting opening, the spoiler rotating disc rotates clockwise under the driving of the rotating shaft, and when the third round holes and the second volleyball guide rail face the second ball collecting opening, the ball falls into the second ball collecting opening.

Compared with the prior art, the invention has at least the following beneficial technical effects:

compared with the prior commonly used equipment, the multifunctional flow-resisting air-locking device and the method thereof provided by the invention have the following obvious advantages:

1) The equipment provided by the method can simultaneously have the functions of the distributor, the flow plug and the ball crushing separator, so that the quantity of system equipment is greatly reduced, and the fault points of the system are reduced;

2) The contact part of the equipment provided by the method and the fuel ball is made of soft materials, so that dust and broken balls are not easy to generate;

3) The fuel balls of the equipment provided by the method roll on the guide rail, so that dust and broken chips can be fully separated;

4) The device provided by the method overcomes the defects of ball shearing and jamming of the existing flow plug, and the operation is more stable.

5) The equipment provided by the method can realize the isolation of two environments while conveying materials, and simultaneously improves the efficiency of conveying materials;

6) The reliability and the stability of the operation of the equipment are improved;

7) The risk of downtime and the risk caused by maintenance are reduced.

Drawings

Fig. 1 is a front sectional view of a multi-functional choke air-lock apparatus of the present invention.

Fig. 2 is a side sectional view of a multi-functional choke air-lock apparatus of the present invention.

Description of reference numerals:

1. the ball inlet 2, the spoiler casing 3, the spoiler carousel, 4, second volleyball guide rail, 5, second receipts ball mouth, 6, ball inlet guide rail, 7, first volleyball guide rail, 8, first receipts ball mouth, 9, broken ball collection mouth, 10, flange.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and fig. 2, the multifunctional choke air-lock device provided by the present invention comprises a ball inlet 1, a spoiler housing 2, a spoiler rotating disc 3, a first ball collecting port 8, a broken ball collecting port 9, a second ball collecting port 5, a ball inlet guide rail 6, a first ball discharging guide rail 7 and a second ball discharging guide rail 4; the diameter of a ball passing through the device is B, the flow plug shell 2 is installed at an inclination angle of 30-90 degrees and is a cylindrical shell with the inner diameter of C, the value of C is 5B-6B, the inner surface of the upper part of the flow plug shell 2 is smooth, the upper part of the cylinder and the lower part of the cylinder are hermetically connected through a flange 10, the height of the cylinder of the flow plug shell 2 is larger than 2.6A, the thickness of the upper part of the cylinder of the flow plug shell 2 is 1.4A, the inner diameters of the ball inlet 1, the first ball receiving port 8 and the second ball receiving port 5 are A, the value of A is 1.03B-1.5B, the flow plug shell 2 is divided into an upper part and a lower part, the ball inlet 1, the first ball receiving port 8 and the second ball receiving port 5 are installed on the central plane of the circumference of the upper part of the cylinder of the flow plug shell 2, the inner diameter of the ball crushing collecting port 9 is A, and the crushing port is installed on the central plane of the circumference of the lower part of the cylinder of the flow plug shell 2; the spoiler rotating disc 3 is arranged in the spoiler shell 2 and is in clearance fit with the spoiler shell 2, so that the spoiler rotating disc 3 can be ensured to rotate freely in the spoiler shell 2, and the sealing effect can be achieved; the circular ring of the spoiler rotating disc 3 is circumferentially provided with 3 circular holes with the diameter of A, a first circular hole is opposite to the goal guide rail 6, a second circular hole is opposite to the first volleyball guide rail 7, a third circular hole is opposite to the second volleyball guide rail 4, and the three circular holes are in smooth transition connection with the three guide rails; the center of the spoiler rotating disc 3 is connected with a rotating shaft 11.

The ball inlet guide rail 6, the first ball-discharging guide rail 7 and the second ball-discharging guide rail 4 are square frames formed by four cylinders, the outer diameters of the cylinders are between 0.1B and 0.3B, the distance between every two adjacent cylinders is 0.9B, and balls with the diameters smaller than 0.9B can be guaranteed to leak out of the square frames. The goal guide rail 6, the first volleyball guide rail 7 and the second volleyball guide rail 4 are made of materials with hardness smaller than that of the balls, so that the balls are prevented from being damaged in the ball passing process.

The spoiler carousel 3 is the ring that thickness is 1.4A, the external diameter is less than C, and the wall thickness of ring satisfies spoiler carousel 3's intensity requirement, satisfies spoiler carousel 3 and does not take place to warp in the rotation process, and spoiler carousel 3 surface is smooth. The choke disc 3 is connected to an actuator capable of bidirectional movement through a rotating shaft 11.

Examples

The outer diameter of fuel spheres and graphite spheres of the high-temperature gas cooled reactor demonstration project is 60mm, a sphere inlet pipe with the inner diameter of 66mm, two sphere outlet halls and a broken sphere outlet pipe are selected, a stainless steel pipe with the outer diameter of 360mm and the thickness of 20mm is selected to be used for processing a turntable, the length of the stainless steel pipe is 100mm, 3 circular holes with the inner diameter of 66mm are processed on the central plane of the stainless steel pipe, and the included angles between the centers of the three holes and the connecting line of the circle centers are 100 degrees, 160 degrees and 100 degrees. Three square guide rails with the side length of 74mm are manufactured by stainless steel rods with the outer diameter of 10mm, the distance between every two adjacent guide rails is 54mm, the four steel rods at one end of each guide rail are bent outwards and welded on the extension of a hole with the inner diameter of 66mm, the through flow of the hole with the diameter of 66mm is not influenced during welding, the guide rails are in smooth transition between 66mm and 54mm, the three guide rails are arranged on the same plane, and the other ends of the three guide rails are in smooth connection with each other. In order to increase the strength, circular arc-shaped reinforcing ribs can be welded on the guide rail, and the reinforcing ribs cannot influence the passing of the balls. And a transmission shaft with the outer diameter of 30mm is welded at the center of the side surface of the disc.

The upper part shell is made of a stainless steel pipe with the inner diameter of 361mm, the pipe wall of 20mm and the length of 100mm, one side face of the stainless steel pipe is plugged by a plugging plate made of a stainless steel plate with the wall thickness of 20mm, and the plugging plate and the pipe body are provided with a sealing gasket and connected through bolts. And a hole is drilled in the center of the blocking plate and penetrates through the transmission shaft. The other side surface of the stainless steel pipe is provided with a flange. 3 circular holes with the inner diameter of 66mm are processed on the center face of the stainless steel tube, the included angles between the centers of the three holes and the connecting line of the circle centers are 100 degrees, 160 degrees and 100 degrees, the three circular holes and the three holes of the rotary table can be centered, and the three holes are respectively connected with the ball inlet tube and the two ball outlet halls.

The lower part of the shell is made of a stainless steel pipe with the inner diameter of 361mm, the pipe wall of 20mm and the length of 70mm, one side surface of the stainless steel pipe is made of a stainless steel plate with the wall thickness of 20mm to be plugged, and the plugging plate and the pipe body are sealed by a gasket and connected through bolts. The other side surface of the stainless steel pipe is provided with a flange plate which is connected with the upper part of the outer shell flange in a sealing way. 1 round hole with the inner diameter of 66mm is processed on the central surface of the stainless steel pipe and is connected with a crushed ball discharge pipe.

The disc is arranged in the shell, and the smaller the gap is, the better the gap is, by polishing on the premise of ensuring that the disc is not jammed. After the equipment is assembled, the feeding pipe and the discharging pipe are connected into a system, the motor drives the transmission shaft to rotate, and the rotating speed of the transmission shaft is adjusted according to the system requirements.

When the ball inlet hole of the rotary disc is aligned with the feeding pipe, fuel, broken balls and dust along with fuel balls enter the ball inlet hole, and the two ball outlet holes are sealed by the shell.

When the ball enters the device from the ball inlet 1, crushed balls, scraps and dust entering along with the ball fall into the lower part of the flow plug shell 2 when passing through the ball guide rail 6 and are discharged through a crushed ball collecting port 9;

when a ball needs to enter the first ball receiving opening 8, the spoiler rotating disc 3 is driven by the rotating shaft 11 to rotate anticlockwise, and when the second round hole and the first volleyball guide rail 7 are opposite to the first ball receiving opening 8, the ball falls into the first ball receiving opening 8;

when the ball needs to enter the second ball receiving opening 5, the spoiler rotating disc 3 is driven by the rotating shaft 11 to rotate clockwise, and when the third round hole and the second volleyball guide rail 4 are opposite to the second ball receiving opening 5, the ball falls into the second ball receiving opening 5.

Although the invention has been described in detail with respect to the general description and the specific embodiments thereof, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A multifunctional flow blocking and air locking device is characterized by comprising a ball inlet (1), a flow blocking device shell (2), a flow blocking device rotary table (3), a first ball collecting port (8), a broken ball collecting port (9), a second ball collecting port (5), a ball inlet guide rail (6), a first volleyball guide rail (7) and a second volleyball guide rail (4);

the diameter of a ball passing through the device is B, the shell (2) of the flow damper is a cylindrical shell with the inner diameter of C, the value of C is 5B to 6B, the inner diameters of the ball inlet (1), the first ball collecting port (8) and the second ball collecting port (5) are A, the value of A is 1.03B to 1.5B, the shell (2) of the flow damper is divided into an upper part and a lower part, the ball inlet (1), the first ball collecting port (8) and the second ball collecting port (5) are arranged on the circumferential central plane of a part of a cylinder on the shell (2) of the flow damper, the inner diameter of the broken ball collecting port (9) is A and is arranged on the circumferential central plane of the lower part of the shell (2) of the flow damper;

the spoiler rotating disc (3) is arranged in the spoiler shell (2) and is in clearance fit with the spoiler shell (2), so that the spoiler rotating disc (3) can be ensured to rotate freely in the spoiler shell (2), and can play a role in sealing; the circular ring of the flow plug turntable (3) is circumferentially provided with 3 circular holes with the diameter of A, a first circular hole is opposite to the goal guide rail (6), a second circular hole is opposite to the first volleyball guide rail (7), a third circular hole is opposite to the second volleyball guide rail (4), and the three circular holes are in smooth transition connection with the three guide rails; the center of the spoiler rotating disc (3) is connected with a rotating shaft (11).

2. A multi-functional choke air-lock device according to claim 1, characterized in that the choke housing (2) is mounted at an inclination angle of 30 ° to 90 °.

3. A multi-functional choke air-lock according to claim 1, characterized in that the inner surface of the upper part of the choke housing (2) is smooth, and the upper part cylinder and the lower part cylinder are sealingly connected by a flange (10).

4. A multi-functional choke air-lock according to claim 1, characterized in that the height of the cylinder of the choke housing (2) is more than 2.6A and the thickness of the upper part of the cylinder of the choke housing (2) is 1.4A.

5. The multifunctional flow-blocking and air-locking device as claimed in claim 1, wherein the ball-entering guide rail (6), the first ball-discharging guide rail (7) and the second ball-discharging guide rail (4) are all square frames composed of four cylinders, the outer diameter of each cylinder is 0.1B-0.3B, the distance between every two adjacent cylinders is 0.9B, and balls with the diameter smaller than 0.9B can be guaranteed to leak out of the square frames.

6. A multi-functional block-flow and air-lock device according to claim 1, characterized in that the ball-entering guide rail (6), the first volleyball guide rail (7) and the second volleyball guide rail (4) are made of a material with a hardness less than that of a ball, so as to prevent the ball from being damaged during passing the ball.

7. The multifunctional choke air-lock device according to claim 1, characterized in that the choke rotating disk (3) is a circular ring with a thickness of 1.4A and an outer diameter smaller than C, the wall thickness of the circular ring meets the strength requirement of the choke rotating disk (3), the choke rotating disk (3) does not deform during the rotation process, and the outer surface of the choke rotating disk (3) is smooth.

8. A multi-functional step-down air-lock according to claim 1, characterized in that the spoiler rotor (3) is connected to the actuator capable of bi-directional movement by means of a rotating shaft (11).

9. A multi-functional flow-blocking and air-locking device as claimed in claim 1, wherein when the ball inlet (1) is opposite to the first circular hole and the ball inlet guide rail (6), the second circular hole and the third circular hole are sealed by the flow-blocking device housing (2), when the first ball-receiving port (8) is opposite to the second circular hole and the first ball-discharging guide rail (7), the first circular hole and the third circular hole are sealed by the flow-blocking device housing (2), and when the second ball-receiving port (5) is opposite to the third circular hole and the second ball-discharging guide rail (4), the second circular hole and the first circular hole are sealed by the flow-blocking device housing (2).

10. A multi-functional, flow-blocking and gas-locking method, based on a multi-functional, flow-blocking and gas-locking device according to any one of claims 1 to 9, comprising:

when the ball enters the device from the ball inlet (1), crushed balls, scraps and dust entering along with the ball fall into the lower part of the flow plug shell (2) when passing through the ball guide rail (6) and are discharged through the crushed ball collecting port (9);

when a ball needs to enter the first ball receiving port (8), the flow plug rotating disc (3) is driven by the rotating shaft (11) to rotate anticlockwise, and when the second round hole and the first ball-discharging guide rail (7) are opposite to the first ball receiving port (8), the ball falls into the first ball receiving port (8);

when the ball needs to enter the second ball receiving port (5), the spoiler rotating disc (3) rotates clockwise under the driving of the rotating shaft (11), and when the third round hole and the second volleyball guide rail (4) are opposite to the second ball receiving port (5), the ball falls into the second ball receiving port (5).