CN216692385U - Fire-fighting fuse valve for nuclear power plant - Google Patents
Fire-fighting fuse valve for nuclear power plant Download PDFInfo
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- CN216692385U CN216692385U CN202220093758.4U CN202220093758U CN216692385U CN 216692385 U CN216692385 U CN 216692385U CN 202220093758 U CN202220093758 U CN 202220093758U CN 216692385 U CN216692385 U CN 216692385U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model provides a nuclear power plant fire-fighting fusion-breaking valve which comprises a closed spray head, a glass bulb, a valve cover and a valve body, wherein the valve body comprises a water inlet and a water outlet, the valve cover is in threaded connection with the valve body, a valve core sealing assembly used for plugging a cavity channel between the water inlet and the water outlet is arranged on the valve cover, the valve core sealing assembly comprises a mandrel, a piston, a stop block and a sealing plug, the piston, the valve cover and the valve body enclose to form a pressure cavity, a mandrel channel communicated with the pressure cavity and the cavity channel between the water inlet and the water outlet is arranged in the mandrel, and a water drainage port communicated with the pressure cavity is arranged on the valve cover. Water from the water inlet is filled into the pressure cavity through the mandrel channel, and the piston is tightly pressed on the sealing surface of the valve seat through the mandrel. The temperature sensing glass bulb is broken through the electric initiator after an electric starting signal is received, or the temperature of the installation environment reaches the alarm value of the temperature sensing glass bulb, so that the temperature sensing glass bulb is broken, the upper cavity pressure of the fusing valve is released, the fusing valve is started, and fire water reaches a target part through the fire prevention fusing valve to be sprayed, cooled and put out a fire.
Description
Technical Field
The utility model belongs to the technical field of fire-fighting facilities, and particularly relates to a fire-fighting fusion valve for a nuclear power plant.
Background
Nowadays, resources are increasingly reduced, but industrial development requires a large amount of electricity, so that development of nuclear power is a necessary trend. However, due to the occurrence of fukushima nuclear accidents, people pay more attention to nuclear safety. In the nuclear safety problem, nuclear power fire safety is one of the key points, so that nuclear safety fire management has very important significance for nuclear safety. If a fire accident occurs, the fire cannot be extinguished in time, which brings great loss to the safety of people and equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems and provides a nuclear power plant melt-out preventing valve.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a nuclear power plant fire-fighting fusion-breaking valve comprises a closed sprayer, a glass bulb, a valve cover and a valve body, wherein the valve body comprises a water inlet and a water outlet, the valve cover is in threaded connection with the valve body, a valve core sealing assembly used for sealing a cavity channel between the water inlet and the water outlet is arranged on the valve cover, the valve core sealing assembly comprises a mandrel, a piston, a stop block and a sealing plug, the sealing plug is fixedly arranged at the lower end of the mandrel, the piston is fixedly arranged on the upper portion of the mandrel, the stop block is fixedly arranged on the lower portion of the mandrel, the piston, the valve cover and the valve body enclose a pressure cavity, the lower end of the stop block is abutted against the valve body, a mandrel channel communicated with the pressure cavity channel between the pressure cavity and the water inlet and the water outlet is arranged in the mandrel, a water drainage port communicated with the pressure cavity is arranged on the valve cover, and the closed sprayer is arranged at the water drainage port of the valve cover, the closed type spray head is provided with a spray nozzle, and two ends of the glass bubble are respectively abutted against the closed type spray head and the spray nozzle.
As a preferred technical solution, the nuclear power plant fire-fighting fusion valve further includes an electric initiator, an electric initiator firing pin, and a control junction box, wherein the electric initiator is electrically connected to the control junction box, and the electric initiator firing pin is disposed in the electric initiator and is controlled by the control junction box to strike the middle of the glass bulb.
As a preferred technical scheme, the sealing plug includes gland, sealed pad and flat packing, the lower part of dabber is equipped with and is used for spacingly gland's step portion, gland suit is in on the dabber and butt are in on the step portion, gland's bottom is equipped with sealed pad mounting groove, flat packing will through a nut sealed pad pressure equipment is in sealed pad mounting groove.
After the technical scheme is adopted, the utility model has the following advantages:
the nuclear power plant fire-fighting fusion valve is characterized in that water in a water inlet is filled into a pressure cavity through a mandrel channel, and a piston is tightly pressed on a sealing surface of a valve seat through a mandrel. The temperature sensing glass bulb is broken through the electric initiator after an electric starting signal is received, or the temperature of the installation environment reaches the alarm value of the temperature sensing glass bulb, so that the temperature sensing glass bulb is broken, the upper cavity pressure of the fusing valve is released, the fusing valve is started, and fire water reaches a target part through the fire prevention fusing valve to be sprayed, cooled and put out a fire.
Drawings
FIG. 1 is a schematic diagram of a nuclear power plant fire suppression fuse valve;
FIG. 2 is a schematic structural view of a closed-type showerhead;
FIG. 3 is a cross-sectional view of a nuclear power plant safety fuse valve;
in the figure:
04-control junction box; 101-closed spray head; 102-temperature sensitive glass bubbles; 103-an electrical initiator; 104-an electrical initiator firing pin; 201-a valve body; 202-a nut; 203-flat pad; 204-a gasket; 205-sealing gland; 209-mandrel; 210-a valve cover; 213-a piston; 214-stop.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples.
As shown in fig. 1 to 3, the nuclear power plant fire-fighting fuse valve comprises a valve cover 210, a valve body 201, a closed spray head 101, a temperature-sensitive glass bulb 102, an electric initiator 103, an electric initiator firing pin 104 and a control junction box 04.
The valve body 201 includes a water inlet and a water outlet. A water inlet cavity channel connected with the water inlet and a water outlet cavity channel connected with the water outlet are arranged in the valve body 201, the water inlet cavity channel is in a concave C shape, and the water outlet cavity channel is in a convex C shape. And a separation rib plate is arranged between the water inlet cavity channel and the water outlet cavity channel, and a water blocking hole is arranged on the separation rib plate. A mandrel installation cavity perpendicular to the partition rib plate is further arranged in the valve body 201.
The valve cover 210 is screwed on the valve body 201 and is arranged at the top end of the mandrel installation cavity. The valve cover 210 is provided with a valve core sealing assembly for plugging the water blocking hole.
The valve core sealing assembly comprises a mandrel 209, a piston 213, a stop 214 and a sealing plug. The sealing plug is fixedly arranged at the lower end of the mandrel 209, the piston 213 is fixedly arranged at the upper part of the mandrel 209, and the stop block 214 is fixedly arranged at the lower part of the mandrel 209.
The piston 213, the valve cover 210 and the valve body 201 enclose a pressure chamber, the lower end of the stop block 214 abuts against the valve body 201, a water discharge opening communicated with the pressure chamber is formed in the valve cover 210, the closed type spray head 101 is installed at the water discharge opening of the valve cover 210, the closed type spray head 101 is provided with a nozzle, and two ends of the temperature sensing glass bulb 102 abut against the closed type spray head 101 and the nozzle respectively. Be equipped with closed shower nozzle 101 mounting groove on the valve gap 210, closed shower nozzle 101 threaded connection be in the closed shower nozzle 101 mounting groove.
And a mandrel channel for communicating the pressure cavity with a cavity between the water inlet and the water outlet is arranged in the mandrel 209. In this embodiment, the diameter of the channel of the mandrel is 6mm, and the diameter of the mandrel 209 at the maximum is 24mm, and the diameter at the minimum is 14 mm.
The electric initiator 103 is electrically connected to the control terminal block 04, and the electric initiator striker 104 is provided in the electric initiator 103 and is controlled by the control terminal block 04 to strike the middle of the temperature sensitive glass bulb 102.
The sealing plug includes gland 205, sealed pad 204 and plain packing 203, the lower part of dabber 209 is equipped with and is used for spacingly gland 205's step portion, gland 205 suit is in on the dabber 209 and the butt be in on the step portion, gland 205's bottom is equipped with sealed pad 204 mounting groove, plain packing 203 will through a nut 202 sealed pad 204 pressure equipment is in sealed pad 204 mounting groove.
The working principle of the nuclear power plant fire-fighting fusion valve is as follows: water from the water inlet is filled into the pressure cavity through the mandrel channel, and the piston 213 is tightly pressed on the sealing surface of the valve seat through the mandrel 209. After receiving an electric starting signal, the temperature sensing glass bulb 102 is broken through the electric initiator 103, or the temperature of the installation environment reaches the alarm value of the temperature sensing glass bulb 102, so that the temperature sensing glass bulb 102 is broken, the upper cavity pressure of the fusing valve is released, the fusing valve is started, and fire water reaches a target part through the fire prevention fusing valve to be sprayed, cooled and put out a fire.
O-rings are arranged between the piston 213 and the mandrel 209, between the piston 213 and the valve body 201, between the stopper 214 and the mandrel 209, between the stopper 214 and the valve body 201, between the gland 205 and the mandrel 209, and between the mandrel 209 and the valve cover 210. The factor that nuclear power is built at sea and the nuclear radiation is strong due to high temperature, high humidity, high salt fog and high nuclear radiation in the operating environment are considered, and the equipment sealing element is made of a nuclear radiation resistant polymer composite material and is identified by a third-party radiation resistant test.
The valve body 201, the valve cover 210 and the mandrel 209 are cast from 06Cr19Ni10 and then machined with high precision. The casing of the equipment is cast and integrally formed by adopting the latest process, and then is finely processed by using a high-precision machine tool, so that the leakage condition caused by redundant connection is avoided; 06Cr19Ni10 is selected as a main material, so that the potential explosion hazard of active metal due to hydrogen generation under extreme conditions is avoided.
According to the nuclear power plant fire-fighting fuse valve, an RCC = M checking report is formed according to an RCC-M standard, the requirement of equipment on nuclear power project earthquake resistance is fully considered, and the fire-fighting fuse valve is identified through a third-party earthquake resistance test; by adopting three-dimensional software design, the design scheme is optimized under the condition of meeting the installation size data of a nuclear power site, the water passing area is ensured, and the hydraulic friction resistance is reduced.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (3)
1. The fire-fighting fusion-breaking valve for the nuclear power plant is characterized by comprising a closed spray head, a temperature-sensing glass bulb, a valve cover and a valve body, wherein the valve body comprises a water inlet and a water outlet, the valve cover is in threaded connection with the valve body, a valve core sealing assembly used for sealing a cavity channel between the water inlet and the water outlet is arranged on the valve cover, the valve core sealing assembly comprises a mandrel, a piston, a stop block and a sealing plug, the sealing plug is fixedly arranged at the lower end of the mandrel, the piston is fixedly arranged on the upper portion of the mandrel, the stop block is fixedly arranged on the lower portion of the mandrel, the piston, the valve cover and the valve body enclose a pressure cavity, the lower end of the stop block is abutted against the valve body, a mandrel channel communicated with the cavity channel between the pressure cavity and the water inlet and the water outlet is arranged in the mandrel, and a water drainage port communicated with the pressure cavity is arranged on the valve cover, the closed type spray head is installed at a water outlet of the valve cover and provided with a spray nozzle, and two ends of the temperature sensing glass bulb are respectively abutted against the closed type spray head and the spray nozzle.
2. The nuclear power plant antifuse valve of claim 1, further comprising an electrical initiator, an electrical initiator striker, and a control junction box, the electrical initiator being electrically connected to the control junction box, the electrical initiator striker being disposed within the electrical initiator and controlled by the control junction box to strike a middle portion of the temperature-sensitive glass bulb.
3. The nuclear power plant fire-fighting fusion valve of claim 1, wherein the sealing plug includes a sealing gland, a sealing gasket and a flat gasket, the lower portion of the mandrel is provided with a step portion for limiting the sealing gland, the sealing gland is sleeved on the mandrel and abuts against the step portion, the bottom of the sealing gland is provided with a sealing gasket mounting groove, and the flat gasket is pressed into the sealing gasket mounting groove through a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220093758.4U CN216692385U (en) | 2022-01-14 | 2022-01-14 | Fire-fighting fuse valve for nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220093758.4U CN216692385U (en) | 2022-01-14 | 2022-01-14 | Fire-fighting fuse valve for nuclear power plant |
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| Publication Number | Publication Date |
|---|---|
| CN216692385U true CN216692385U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220093758.4U Active CN216692385U (en) | 2022-01-14 | 2022-01-14 | Fire-fighting fuse valve for nuclear power plant |
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| CN (1) | CN216692385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814303A (en) * | 2022-08-29 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Fire suppression apparatus and method for energy storage system |
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2022
- 2022-01-14 CN CN202220093758.4U patent/CN216692385U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814303A (en) * | 2022-08-29 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Fire suppression apparatus and method for energy storage system |
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