CN215214103U - Nuclear power steam-driven auxiliary water feeding pump - Google Patents
Nuclear power steam-driven auxiliary water feeding pump Download PDFInfo
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- CN215214103U CN215214103U CN202120523352.0U CN202120523352U CN215214103U CN 215214103 U CN215214103 U CN 215214103U CN 202120523352 U CN202120523352 U CN 202120523352U CN 215214103 U CN215214103 U CN 215214103U
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Abstract
The utility model discloses a nuclear power pneumatic supplementary water-feeding pump, which comprises a pump body, the outside one side of the pump body install the level gauge subassembly, one side and the pump cover of the pump body are connected, the upper portion of pump cover is provided with steam exhaust valve subassembly and admission valve subassembly respectively, steam exhaust valve subassembly is connected with the interlock mechanism subassembly, the interlock mechanism subassembly is connected with the lever mechanism subassembly, the lever mechanism subassembly is connected with the floater subassembly, the lower part delivery port check valve in the pump cover outside, the lower part of pump cover still is provided with the drainage valve subassembly, the intermediate junction of pump cover has the water inlet check valve. The beneficial effects are that: the continuous upstream drainage can be intermittently recovered to a condenser through a pneumatic drainage pump; in the intermittent drainage stage of the drainage pump, the downstream water seal can prevent back suction caused by the negative pressure of the condenser.
Description
Technical Field
The utility model belongs to process design and equipment, concretely relates to nuclear power steam-driven auxiliary water-feeding pump.
Background
The nuclear power steam-driven auxiliary water-feeding pump needs to be in a daily hot standby state, shaft seal water of the nuclear power steam-driven auxiliary water-feeding pump is deaerated water and needs to be continuously supplied and consumed, in addition, the condensed water amount of a steam supply pipeline and a steam exhaust pipeline is considerable, the existing steam-driven auxiliary water-feeding pump exhausts the water to a water drainage system without recovery treatment, the waste is huge, and preparation work of the deaerated water and loss of two-loop heat energy are increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a nuclear power steam-driven supplementary feed water pump, the hydrophobic of the collection that it can last to retrieve it to the condenser, avoided huge waste and guaranteed this section two loop system's closed loop.
The technical scheme of the utility model as follows: the utility model provides a nuclear power pneumatic supplementary water-feeding pump, includes the pump body, the pump cover, the gasket, the steam extraction valve subassembly, the admission valve subassembly, the water inlet check valve, the delivery port check valve, the interlock mechanism subassembly, the drainage valve subassembly, the lever mechanism subassembly, ball float subassembly and level gauge subassembly, the outside one side of the pump body install the level gauge subassembly, one side and the pump cover of the pump body are connected, the upper portion of pump cover is provided with steam extraction valve subassembly and admission valve subassembly respectively, the steam extraction valve subassembly is connected with the interlock mechanism subassembly, the interlock mechanism subassembly is connected with the lever mechanism subassembly, the lever mechanism subassembly is connected with the ball float subassembly, the lower part delivery port check valve in the pump cover outside, the lower part of pump cover still is provided with the drainage valve subassembly, the intermediate junction of pump cover has the water inlet check valve.
One end of the liquid level meter assembly is positioned at the lower part of the pump body.
One end of the liquid level meter assembly is positioned at the upper part of the pump body.
And the pump body and the pump cover of the liquid level meter assembly are provided with gaskets.
The beneficial effects of the utility model reside in that: 1) the continuous upstream drainage can be intermittently recovered to a condenser through a pneumatic drainage pump; 2) in the drainage intermittent stage of the drainage pump, the downstream water seal can prevent back suction caused by the negative pressure of the condenser; 3) the design of the overflow pipeline can ensure that the overflow cannot happen when the drainage pump operates normally, and can also ensure that upstream drainage is normal when the drainage pump stops due to faults or is maintained and isolated. The latter function is particularly important, and can prevent the unavailability of the steam-driven auxiliary water feeding pump caused by poor drainage; 4) the internal structure of the pneumatic drainage pump can mechanically interlock and trigger a switch water inlet/outlet valve and a compressed air inlet/outlet valve, so that the air consumption is saved.
Drawings
FIG. 1 is a schematic structural view of a nuclear power steam-driven auxiliary water-feeding pump provided by the present invention;
fig. 2 is a schematic view of the nuclear power steam-driven auxiliary water feeding pump and the drainage recovery device of the related system provided by the utility model.
In the figure, a pump body 1, a pump cover 2, a gasket 3, a steam exhaust valve component 4, an air inlet valve component 5, a water inlet check valve 6, a water outlet check valve 7, a linkage mechanism component 8, a drainage valve component 9, a lever mechanism component 10, a floating ball component 11, a liquid level meter component 12, a steam pipeline drainage exhaust device 21, a steam-water separator 22, a compressed air storage 23, a drainage system 24, a pneumatic drainage pump 25, a filter 26 and a condenser 27 are arranged.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the nuclear power steam-driven auxiliary water feeding pump comprises a pump body 1, a pump cover 2, a gasket 3, an exhaust valve assembly 4, an air inlet valve assembly 5, a water inlet check valve 6, a water outlet check valve 7, a linkage mechanism assembly 8, a drain valve assembly 9, a lever mechanism assembly 10, a floating ball assembly 11 and a liquid level meter assembly 12.
Specifically, level gauge subassembly 12 is installed to one side of the pump body 1 outside, the one end of level gauge subassembly 12 is located the lower part of the pump body 1, one end is located the upper portion of level gauge subassembly 12, one side of the pump body 1 is connected with pump cover 2, pump body 1 is provided with gasket 3 with pump cover 2, the upper portion of pump cover 2 is provided with exhaust valve subassembly 4 and admission valve subassembly 5 respectively, exhaust valve subassembly 4 is connected with interlock mechanism subassembly 8, interlock mechanism subassembly 8 is connected with lever mechanism subassembly 10, lever mechanism subassembly 10 is connected with floater subassembly 11, the lower part delivery port check valve 7 in the pump cover 2 outside, the lower part of pump cover 2 still is provided with hydrophobic valve subassembly 9, carry out through the action of link mechanism subassembly 10 and drain and close, drain to low reaches delivery port check valve 7 and low reaches drainage pipe, the intermediate junction of pump cover 2 has water inlet check valve 6.
As shown in fig. 2, a nuclear power steam-driven auxiliary water feeding pump and related system drainage recovery device comprises a steam pipeline drainage exhaust device 21, a steam-water separator 22, a compressed air storage 23, a drainage system 24, a pneumatic drainage pump 25, a filter 26 and a condenser 27, wherein the steam pipeline drainage exhaust device 21 is connected with the steam-water separator 22, the steam-water separator 22 is respectively connected with the drainage system 24 and the pneumatic drainage pump 25, the pneumatic drainage pump 25 is connected with the compressed air storage 23, the pneumatic drainage pump 25 is connected with the filter 26, the filter 26 is connected with the condenser 27, the steam-water separator 22 is further communicated with an exhaust port, and the pneumatic drainage pump 25 is communicated with the exhaust port.
The drainage of the pneumatic auxiliary water feeding pump (the position elevation is about 0 m) and the drainage exhaust of the front steam pipeline and the rear steam pipeline are collected to a steam-water separator (the position elevation is about-3.4 m), the separated drainage flows into the pneumatic drainage pump (the elevation is about-7.0 m), and the drainage is filtered and drained to a condenser. An overflow pipeline is arranged in front of the pneumatic hydrophobic pump, and the highest point of the overflow pipeline is more than 1m higher than the bottom of the steam-water separator. The downstream of the filter is provided with a water seal, and the elevation of the highest point is more than 5 m. The core equipment is a pneumatic drainage pump.
The pneumatic drainage pump structure is a pressure air (steam and other gases can be used according to user requirements) driven floating ball type drainage pump, a check valve is designed for water inlet and drainage, and the rising and falling of a floating ball can be interlocked to trigger the opening and closing of a drainage valve, an air inlet valve and a steam exhaust valve, so that the discontinuous drainage function is achieved.
1) Under normal operating mode, the drainage pump steam exhaust valve opening state, atmospheric pressure in the pump chamber, it is hydrophobic because gravity gets into the pump chamber, the floater rises along with the liquid level risees, under the effect of linkage subassembly in the pump, power air supply inlet valve is opened, the steam exhaust valve is closed, the intracavity admission pressure risees, stop intaking, the drainage check valve is opened after the pressure risees, the pressure of power medium forces the comdenstion water to discharge rapidly, the floater descends, the linkage subassembly resets, power medium inlet valve (admission valve) is closed, the steam exhaust valve is opened, the drain valve is closed, the normal pressure is replied in the pump chamber, the recovery of intaking. The intermittent hydrophobic function is achieved by the reciprocating circulation.
2) Under the fault working condition, the water inlet or the water outlet of the water drainage pump is stopped, the upstream drainage water overflows to a pit of a drainage system through an upstream overflow pipeline, and the upstream steam-driven auxiliary water feed pump cannot be used due to unsmooth drainage.
1. The height of a steam pipeline and main equipment from a drainage and exhaust source is about 0m, the height of a steam-water separator is about-3.4 m, the height of a pneumatic drainage pump is about-7.0 m, and the heights are sequentially reduced, but the specific numerical values are not limited.
2. The highest point of the overflow pipeline is more than 1m higher than the bottom of the steam-water separator.
3. The elevation of the highest point of the downstream water seal is required to be more than 5m, the numerical value is not limited, and the principle is that the maximum pressure difference of 1 atmosphere can be provided by the water seal.
Claims (4)
1. The utility model provides a nuclear power steam-driven supplementary feed pump which characterized in that: including the pump body, the pump cover, the gasket, the steam exhaust valve subassembly, the admission valve subassembly, the water inlet check valve, the delivery port check valve, the interlock mechanism subassembly, drainage valve subassembly, the lever mechanism subassembly, floater subassembly and level gauge subassembly, the outside one side of pump body install the level gauge subassembly, one side and the pump cover of the pump body are connected, the upper portion of pump cover is provided with steam exhaust valve subassembly and admission valve subassembly respectively, the steam exhaust valve subassembly is connected with the interlock mechanism subassembly, the interlock mechanism subassembly is connected with the lever mechanism subassembly, the lever mechanism subassembly is connected with the floater subassembly, the lower part delivery port check valve in the pump cover outside, the lower part of pump cover still is provided with drainage valve subassembly, the intermediate junction of pump cover has the water inlet check valve.
2. The nuclear power steam-driven auxiliary water feeding pump of claim 1, characterized in that: one end of the liquid level meter assembly is positioned at the lower part of the pump body.
3. The nuclear power steam-driven auxiliary water feeding pump of claim 1, characterized in that: one end of the liquid level meter assembly is positioned at the upper part of the pump body.
4. The nuclear power steam-driven auxiliary water feeding pump of claim 1, characterized in that: and the pump body and the pump cover of the liquid level meter assembly are provided with gaskets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120523352.0U CN215214103U (en) | 2021-03-12 | 2021-03-12 | Nuclear power steam-driven auxiliary water feeding pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120523352.0U CN215214103U (en) | 2021-03-12 | 2021-03-12 | Nuclear power steam-driven auxiliary water feeding pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215214103U true CN215214103U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120523352.0U Active CN215214103U (en) | 2021-03-12 | 2021-03-12 | Nuclear power steam-driven auxiliary water feeding pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215214103U (en) |
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2021
- 2021-03-12 CN CN202120523352.0U patent/CN215214103U/en active Active
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