CN209959901U

CN209959901U - Safety valve of nuclear waste disposal containment simulator

Info

Publication number: CN209959901U
Application number: CN201920300286.3U
Authority: CN
Inventors: 岳仁亮; 周宏宇; 张卫东
Original assignee: Jiangsu Zhonghai Nuclear Environmental Protection Co Ltd
Current assignee: Jiangsu Zhonghai Nuclear Environmental Protection Co Ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2020-01-17
Anticipated expiration: 2029-03-11

Abstract

The utility model discloses a nuclear waste handles containment analog body relief valve, including the radiation protection outer container, set up at the drive arrangement at radiation protection outer container top and disk seat, adapter sleeve, packing box, valve gap, the valve rod of setting in the radiation protection outer container, be equipped with fluid inflow chamber, fluid outflow chamber and pressure release chamber in the disk seat, drive arrangement comprises shell, the controller and the jar of installing in the shell of fixing above the valve gap, the valve rod top is connected with the bottom of cylinder, the top that valve gap, adapter sleeve, packing box and disk seat were passed to the valve rod bottom extends to the pressure release chamber, valve rod surface cover is equipped with first sealed pad and second sealed pad, the fluid flows into the intracavity and is equipped with the pressure sensor with controller electric connection, the beneficial effects of the utility model are that: safe and reliable, good sealing performance, high corrosion and radiation resistance and long service life.

Description

Safety valve of nuclear waste disposal containment simulator

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to a nuclear waste handles analogue body relief valve of containment.

Background

When the nuclear power station is in a serious accident, the pressure in the containment simulation body is continuously increased along with the temperature, and the containment simulation body is in failure risk. At this time, on one hand, in order to prevent the large-scale diffusion of the air with radioactivity in the containment simulation body, the radioactivity must be contained in the containment as much as possible; on the other hand, in order to maintain the integrity of the containment simulator, the containment simulator must be subjected to emergency pressure relief, which causes a great deal of radioactive leakage and brings serious harm to the environment and the public.

The safety valve is an important device of the indispensable containment simulator, because the nuclear waste contains radiation substances, the safety level of the safety valve is higher than that of a common safety valve, particularly, when the safety valve is used for releasing the pressure of the containment simulator, the tightness of the safety valve is ensured, the sealing performance of the conventional safety valve is not high, the nuclear waste cannot be prevented from leaking, and secondary pollution can be caused to the environment.

SUMMERY OF THE UTILITY MODEL

Not enough to the aforesaid, the utility model provides a nuclear waste disposal containment analog body relief valve, the leakproofness is good, and anticorrosive radiation protection performance is high, long service life.

The utility model discloses a realize through following technical scheme: a safety valve of a nuclear waste disposal containment simulator comprises a radiation-proof outer box, a driving device arranged at the top of the radiation-proof outer box, a valve seat, a connecting sleeve, a sealing packing box, a valve cover and a valve rod, wherein the valve seat, the connecting sleeve, the sealing packing box, the valve cover and the valve rod are arranged in the radiation-proof outer box, the sealing packing box is fixedly arranged above the valve seat, the lower end of the connecting sleeve is connected with the sealing packing box, the upper end of the connecting sleeve is connected with the valve cover through a bolt, a fluid inflow cavity, a fluid outflow cavity and a pressure relief cavity are arranged in the valve seat, the fluid inflow cavity is communicated with the fluid outflow cavity, a partition plate is arranged between the pressure relief cavity and the fluid inflow cavity as well as between the pressure relief cavity and the fluid outflow cavity, a pressure relief opening is formed in the partition plate, the driving device is composed of a shell fixed above the valve cover, a controller, the valve comprises a valve rod, a valve core and a first sealing gasket, wherein the valve rod is arranged at the bottom end of the valve rod, the surface of the valve rod is sleeved with the first sealing gasket and a second sealing gasket, the top of the first sealing gasket is fixedly connected with the top of an inner cavity of a valve seat, the top of the second sealing gasket is fixedly connected with the top of the inner cavity of a sealing packing box, and a pressure sensor electrically connected with a controller is arranged in a fluid inflow cavity.

As the utility model discloses a preferred technical scheme still includes the heating panel, the heating panel is including the horizontal part and the vertical part that interconnect into the L type, the valve gap is connected to the horizontal part upper end, and the adapter sleeve is connected to the lower extreme, the adapter sleeve is connected to vertical part one side, one side connection valve rod.

As an optimal technical scheme of the utility model, be equipped with pressure value display and alarm on the shell, pressure value display and alarm all with controller electric connection.

As a preferred technical scheme of the utility model, the valve gap inner chamber is equipped with the cover and establishes the spring on the valve rod, the lower extreme all is equipped with the spring holder on the spring.

As an optimized technical proposal of the utility model, the inner cavity wall of the valve seat is provided with a polytetrafluoroethylene coating.

Compared with the prior art, the beneficial effects of the utility model are that:

1. by arranging the radiation-proof shell, nuclear energy waste flowing through the safety valve can be prevented from generating radiation influence on the outside, the safety of personnel is ensured, and the environmental pollution is reduced;

2. the radioactive fluid in the valve seat can be effectively prevented from entering and leaking out and entering the valve cover under the condition that the first sealing gasket, the second sealing gasket and the sealing filler box are blocked layer by layer, so that the internal parts of the safety valve are damaged, and the service life of the safety valve is prolonged;

3. utilize pressure sensor, controller, cylinder and pressure value display, can the internal pressure value of real-time supervision containment simulation, when exceeding the maximum pressure value that can bear, the controller drives actuating cylinder and opens the relief valve, carries out the pressure release operation, and is high to pressure value management and control precision, safe and reliable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

List of reference numerals: 1. an anti-radiation outer box; 2. a valve seat; 3. connecting sleeves; 4. sealing the stuffing box; 5. a valve cover; 6. a valve stem; 7. a bolt; 8. a fluid inflow chamber; 9. a fluid outflow chamber; 10. a pressure relief cavity; 11. a partition plate; 12. a pressure relief port; 13. a housing; 14. a controller; 15. a cylinder; 16. a valve core; 17. a first gasket; 18. a second gasket; 19. a pressure sensor; 20. a heat dissipation plate; 21. a pressure value display; 22. an alarm; 23. a spring.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1, the safety valve for a nuclear waste disposal containment simulator comprises a radiation-proof outer box 1, a driving device arranged at the top of the radiation-proof outer box 1, a valve seat 2, a connecting sleeve 3, a packing gland 4, a valve cover 5 and a valve rod 6 which are arranged in the radiation-proof outer box 1, wherein the packing gland 4 is fixedly arranged above the valve seat 2, the lower end of the connecting sleeve 3 is connected with the packing gland 4, the upper end of the connecting sleeve 3 is connected with the valve cover 5 through a bolt 7, a fluid inflow cavity 8, a fluid outflow cavity 9 and a pressure relief cavity 10 are arranged in the valve seat 2, the fluid inflow cavity 8 is communicated with the fluid outflow cavity 9, a partition plate 11 is arranged between the pressure relief cavity 10 and the fluid inflow cavity 8 and the fluid outflow cavity 9, a pressure relief opening 12 is arranged on the partition plate 11, the driving device is composed of a shell 13 fixed above the valve cover 5, a controller 14, the top of the valve rod 6 is connected with the bottom of the cylinder 15, the top of the valve cover 5, the connecting sleeve 3, the sealing filler box 4 and the valve seat 2 is penetrated to the bottom of the valve rod 15 and extends to the pressure relief cavity 10, the valve core 16 is arranged at the bottom of the valve rod 6, the first sealing gasket 17 and the second sealing gasket 18 are sleeved on the surface of the valve rod 6, the top of the first sealing gasket 17 is fixedly connected with the top of the inner cavity of the valve seat 2, the top of the second sealing gasket 18 is fixedly connected with the top of the inner cavity of the sealing filler box 4, and the fluid flows into the pressure sensor 19 which is arranged in the cavity 8.

As an embodiment of the utility model discloses a heating panel 20 is still included, heating panel 20 is including the horizontal part and the vertical part that interconnect into the L type, valve gap 2 is connected to the horizontal part upper end, and adapter sleeve 3 is connected to the lower extreme, adapter sleeve 3 is connected to vertical part one side, and valve rod 6 is connected to one side, and at the pressure release in-process, high-temperature gas passes through the relief valve, leads to the temperature of relief valve to rise, can be with the quick transmission of the temperature on the valve rod through heating panel 20, prolongs the life of valve rod 6.

As an embodiment of the utility model, be equipped with pressure value display 21 and alarm 22 on shell 13, pressure value display 21 and alarm 22 all with 14 electric connection of controller, pressure value display 21 can show the pressure value that current fluid flows into in the chamber 8, and when the pressure value reached the pressure that needs the pressure release, alarm 22 can sound, reminds the staff.

As an embodiment of the utility model, 5 inner chambers of valve gap are equipped with the spring 23 that the cover was established on valve rod 6, the lower extreme all is equipped with the spring holder on the spring 23, slows down the impact force that the pressure release brought valve rod 6.

As an embodiment of the utility model, be equipped with the polytetrafluoroethylene coating on the inner chamber wall of disk seat 2, strengthen the holistic corrosion resistance of relief valve, prolong the life of relief valve.

When the safety shell simulation device is used, fluid in the safety shell simulation body enters from the fluid inflow cavity 8 in the valve seat 2 and flows out from the fluid outflow cavity 9, the fluid flows into the pressure sensor 19 of the cavity 8 and can detect the current pressure value, the current pressure value is transmitted to the controller 14, the pressure value is displayed on the pressure value display 21, the maximum pressure value which can be borne by the safety shell simulation body is set in the controller 14, at the moment, the valve core 16 is in contact with the pressure relief opening 12 to block the pressure relief opening 12, when an accident occurs, a large amount of radioactive fluid flows into the safety shell simulation body, when the pressure in the safety shell simulation body is greater than the set maximum pressure value, the controller 14 can start the air cylinder 15 to drive the valve rod 6 to move upwards, the valve core 16 is separated from the pressure relief opening 12, the fluid in the safety shell simulation body enters the pressure relief cavity 10 through the pressure relief opening to carry out, the pressure release process is accomplished, cylinder 15 under the effect of controller 14, promotion valve rod 6 downstream, case 16 blocks up pressure release mouth 12 once more, under the layer upon layer of the first sealed pad 17, the sealed 18 of second pad and the sealed stuffing box 4 prevents, the effectual fluid that prevents gets into leaks, get into valve gap 5, cause the damage to the relief valve internals, the radiation protection outer container 1 adopts the material that can shield the radioactive ray to make, the radioactive fluid that prevents to flow into valve seat 2 that can be fine externally causes radiation influence.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a nuclear waste handles analogue body relief valve of containment which characterized in that: the anti-radiation sealing device comprises an anti-radiation outer box, a driving device arranged at the top of the anti-radiation outer box, and a valve seat, a connecting sleeve, a sealing filler box, a valve cover and a valve rod which are arranged in the anti-radiation outer box, wherein the sealing filler box is fixedly arranged above the valve seat, the lower end of the connecting sleeve is connected with the sealing filler box, the upper end of the connecting sleeve is connected with the valve cover through a bolt, a fluid inflow cavity, a fluid outflow cavity and a pressure relief cavity are arranged in the valve seat, the fluid inflow cavity is communicated with the fluid outflow cavity, a partition plate is arranged between the pressure relief cavity and the fluid inflow cavity as well as between the pressure relief cavity and the fluid outflow cavity, a pressure relief opening is arranged on the partition plate, the driving device comprises a shell fixed above the valve cover, a controller and a cylinder which are arranged in the shell, the top end of the, the valve comprises a valve rod, a valve core and a first sealing gasket, wherein the valve rod is arranged at the bottom end of the valve rod, the surface of the valve rod is sleeved with the first sealing gasket and a second sealing gasket, the top of the first sealing gasket is fixedly connected with the top of an inner cavity of a valve seat, the top of the second sealing gasket is fixedly connected with the top of the inner cavity of a sealing packing box, and a pressure sensor electrically connected with a controller is arranged in a fluid inflow cavity.

2. The simulated safety valve for nuclear waste disposal containment vessel of claim 1, wherein: the valve cover is connected to the upper end of the horizontal part, the lower end of the horizontal part is connected with the connecting sleeve, the connecting sleeve is connected to one side of the vertical part, and the valve rod is connected to one side of the vertical part.

3. The simulated safety valve for nuclear waste disposal containment vessel of claim 1, wherein: be equipped with pressure value display and alarm on the shell, pressure value display and alarm all with controller electric connection.

4. The simulated safety valve for nuclear waste disposal containment vessel of claim 1, wherein: the valve cap inner chamber is equipped with the spring that the cover was established on the valve rod, the lower extreme all is equipped with the spring holder on the spring.

5. The simulated safety valve for nuclear waste disposal containment vessel of claim 1, wherein: and a polytetrafluoroethylene coating is arranged on the inner cavity wall of the valve seat.