CN208502996U - A kind of main steam isolation valve air driven pump and relief valve suppress integrated apparatus offline - Google Patents
A kind of main steam isolation valve air driven pump and relief valve suppress integrated apparatus offline Download PDFInfo
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- CN208502996U CN208502996U CN201820333176.2U CN201820333176U CN208502996U CN 208502996 U CN208502996 U CN 208502996U CN 201820333176 U CN201820333176 U CN 201820333176U CN 208502996 U CN208502996 U CN 208502996U
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Abstract
The utility model relates to a kind of main steam isolation valve air driven pumps and relief valve to suppress integrated apparatus offline, and described device is divided into three the pressure sky component of air driven pump, oil circuit component and accumulator package parts；The pressure sky component, including isolating valve A and voltage-controlled three linked piece；The fuel tank assembly, the hydraulic oil medium of movement, including fuel tank, draining valve, temperature liquid level meter, air cleaner, return filter, experimental pump, sebific duct, check-valves, isolating valve B, experiment relief valve, pressure release hose, oil pressure table, system overflow valve and solenoid directional control valve are provided for air driven pump；Valve group is discharged in the accumulator package, including accumulator and pressure release；The device, which is thoroughly realized, suppresses work under the line of main steam isolation valve air driven pump, can save main steam isolation valve of nuclear power plant special project maintenance duration at least 3 days；Circulation replacement work is changed into the main steam isolation valve air driven pump service work to happen suddenly during operation simultaneously.
Description
Technical field
The utility model belongs to nuclear power generating equipment maintenance testing field, and in particular to a kind of main steam isolation valve air driven pump and lets out
Pressure valve suppresses integrated apparatus offline.
Background technique
Main steam isolation valve is the most important core second level valve of nuclear power plant.The Disintegration overhaul of its executing agency is that nuclear power plant is every
The project that secondary overhaul has to carry out.The main steam isolation valve air driven pump of Fuqing nuclear power 1-4 unit disintegrates and the adjusting of relief valve
Work, for must working for the project.
Since that structure is complicated is accurate for the air driven pump of main steam isolation valve, needed as one of main steam isolation valve overhauling project
Occupy the main line time at least 3 days of the main project solution body running.Air driven pump after maintenance can only be attached to main steaming by returning again
Verifying is suppressed on vapour isolating valve online.The old air driven pump overhauled during non-overhaul can not carry out verifying under line, cannot judge pneumatic
The pressure maintaining and action situation of pump still need to online verification, occupy the overhaul time at least 1 day.
Based on the above reasons, be badly in need of research and develop it is a kind of can to daily period overhaul after old master's steam isolating air driven pump carry out
The device suppressed under line.
Summary of the invention
The purpose of this utility model is that: by suppressing under line to air driven pump, identify that air driven pump has No leakage ahead of time
Situation, pressure maintaining and action situation, while simulating real working condition and the oil circuit relief valve of main steam isolation valve is adjusted, to save
Nuclear power plant of the province overhaul time.
The technical solution of the utility model is as follows: a kind of main steam isolation valve air driven pump and relief valve suppress integration offline
Device, described device are divided into three the pressure sky component of air driven pump, oil circuit component and accumulator package parts；
The pressure sky component, including isolating valve A and voltage-controlled three linked piece；Wherein, the left end of isolating valve A and pneumatic pump intake
Gas source connection, the right end of isolating valve A are connect with the left end of voltage-controlled three linked piece；
The fuel tank assembly provides the hydraulic oil medium of movement, including fuel tank, draining valve, temperature liquid level for air driven pump
Meter, air cleaner, return filter, experimental pump, sebific duct, check-valves, isolating valve B, experiment relief valve, pressure release hose, oil pressure
Power table, system overflow valve and solenoid directional control valve；Wherein, the cabinet of the fuel tank is fixed, and passes through spiral shell between fuel tank upper cover and cabinet
Silk is fixed；The experimental pump is mounted on fuel tank on lid, and the pneumatic circuit of experimental pump is connect with the right end of voltage-controlled three linked piece, experiment
The oil circuit of pump is immersed in fuel tank, and the outlet of experimental pump oil circuit is connect by the sebific duct of a threaded connector with check-valves；Check-valves
Downstream be connected respectively with one end of one end of isolating valve B and solenoid directional control valve；The other end and experiment relief valve of isolating valve B is left
End connection, the right end for testing relief valve are communicated in fuel tank by pressure release hose；It is equipped between check-valves and solenoid directional control valve
Oil pressure table；Overflow valve, overpressure protection for device are installed between check-valves and solenoid directional control valve；It is set on lid on fuel tank
There is air cleaner, the oil refueled for guaranteeing emergency；
Valve group is discharged in the accumulator package, including accumulator and pressure release；The accumulator is fixed；Described
It from left to right successively includes inlet valve, manual draining valve and overpressure protection valve that valve group is discharged in pressure release；Wherein, the both ends of inlet valve point
It is not connect with the oil inlet and outlet of accumulator and solenoid directional control valve；The upstream of manual draining valve and the oil inlet and outlet of accumulator connect,
Downstream is connect with return filter；Overpressure protection valve is in parallel with manual draining valve；
Be additionally provided with return filter on lid on fuel tank, the upper end of the return filter respectively with overflow valve, electromagnetism
Reversal valve is connected with manual draining valve, and lower end is goed deep into fuel tank.
The a length of 90-110cm of the pressure device, width 70-90cm, a height of 150-170cm.
The experimental pump is air piston pump.
The voltage-controlled three linked piece includes pressure air filter, presses empty pressure reducing valve and press empty relief valve, by carrying out to pressure is empty
Filtering decompression provides pressure empty power source for air driven pump.
The isolating valve B is often closed, and the flanged joint with experiment relief valve, this road is used to test the adjusting work of relief valve
Make.
The check-valves is spring loaded check valve.
The air cleaner is connected by screw to fuel tank upper cover.
It is piston among the accumulator, is nitrogen above piston, lower section is hydraulic oil.
The solenoid directional control valve is two-bit triplet solenoid valve, for switching the downstream user of experimental pump.
The remarkable result of the utility model is:
1, the device, which is thoroughly realized, suppresses work under the line of main steam isolation valve air driven pump, can save nuclear power plant's main steam every
From valve special project maintenance duration at least 3 days；
2, circulation replacement work, section are changed into the main steam isolation valve air driven pump service work to happen suddenly during operation simultaneously
About nuclear power plant's main line time at least 3 days, it can avoid the economic cost that daily period complete machine more renews air driven pump, wherein only new spare part
Direct economic benefit be 300,000；
3, the setting valve of main steam isolation valve oil circuit relief valve is 26.8MPa simultaneously, and the safety valve of nuclear power plant suppresses platform one
As be unable to reach such pressure.So the device can also be utilized, to verify qualified air driven pump as power source, simulation is true
Operating condition carries out pressure setting to the oil circuit relief valve of main steam isolation valve.
Detailed description of the invention
Fig. 1 is the knot that main steam isolation valve air driven pump described in the utility model and relief valve suppress integrated apparatus offline
Structure schematic diagram；
In figure: 1, fuel tank；2, draining valve；3, temperature liquid level meter；4, air cleaner；5, return filter；6, isolating valve
A；7, voltage-controlled three linked piece；8, experimental pump；9, sebific duct；10, check-valves；11, isolating valve B；12, relief valve is tested；13, pressure release is soft
Pipe；14, oil pressure table；15, overflow valve；16, solenoid directional control valve；17, valve group, 18, accumulator are discharged in pressure release.
Specific embodiment
With reference to the accompanying drawing and specific embodiment to a kind of main steam isolation valve air driven pump described in the utility model and is let out
Pressure valve is suppressed integrated apparatus offline and is described in further detail.
As shown in Figure 1, a kind of main steam isolation valve air driven pump and relief valve suppress integrated apparatus, described device point offline
For three the pressure sky component of air driven pump, oil circuit component and accumulator package parts；
The pressure sky component, including isolating valve A6 and voltage-controlled three linked piece 7；Wherein, the left end of isolating valve A6 and air driven pump
The connection of entrance gas source, the right end of isolating valve A6 are connect with the left end of voltage-controlled three linked piece 7；
The fuel tank assembly provides the hydraulic oil medium of movement, including fuel tank 1, draining valve 2, temperature liquid for air driven pump
Position meter 3, air cleaner 4, return filter 5, experimental pump 8, sebific duct 9, check-valves 10, isolating valve B11, experiment relief valve 12,
Pressure release hose 13, oil pressure table 14, system overflow valve 15 and solenoid directional control valve 16；Wherein, the cabinet of the fuel tank 1 is fixed, oil
It is screwed between 1 upper cover of case and cabinet；The experimental pump 8 is mounted on fuel tank on lid, the pneumatic circuit of experimental pump 8 with
The right end of voltage-controlled three linked piece 7 connects, and the oil circuit of experimental pump 8 is immersed in fuel tank 1, and the outlet of 8 oil circuit of experimental pump is threaded by one
The sebific duct 9 of connector is connect with check-valves 10；The downstream of check-valves 10 respectively with one end of isolating valve B11 and solenoid directional control valve 16
One end is connected；The other end of isolating valve B11 is connect with experiment 12 left end of relief valve, and the right end of experiment relief valve 12 is soft by pressure release
Pipe 13 is communicated in fuel tank 1；Oil pressure table 14 is equipped between check-valves 10 and solenoid directional control valve 16；In check-valves 10 and electromagnetism
Overflow valve 15, overpressure protection for device are installed between reversal valve 16；Air cleaner 4 is equipped on lid on fuel tank 1, is used for
Guarantee the oil that emergency is refueled；
Valve group 17 is discharged in the accumulator package, including accumulator 18 and pressure release；The accumulator 18 is fixed；
The pressure release discharge valve group 17 from left to right successively includes inlet valve, manual draining valve and overpressure protection valve；Wherein, inlet valve
Both ends connect respectively with the oil inlet and outlet of accumulator 18 and solenoid directional control valve 16；The upstream of manual draining valve and accumulator 18
Oil inlet and outlet connection, downstream is connect with return filter 5；Overpressure protection valve is in parallel with manual draining valve；
Be additionally provided with return filter 5 on lid on fuel tank 1, the upper end of the return filter 5 respectively with overflow valve 15,
Solenoid directional control valve 16 is connected with manual draining valve, and lower end is goed deep into fuel tank 1.
The a length of 90-110cm of the pressure device, width 70-90cm, a height of 150-170cm.
The experimental pump 8 is air piston pump.
The voltage-controlled three linked piece 7 includes pressure air filter, presses empty pressure reducing valve and press empty relief valve, by carrying out to pressure is empty
Filtering decompression provides pressure empty power source for air driven pump.
The isolating valve B11 is often closed, and the flanged joint with experiment relief valve 12, this road is for testing the whole of relief valve 12
Fixed work.
The check-valves 10 is spring loaded check valve.
The air cleaner 4 is connected by screw to fuel tank upper cover.
It is piston among the accumulator 18, is nitrogen above piston, lower section is hydraulic oil.
The solenoid directional control valve 16 is two-bit triplet solenoid valve, for switching the downstream user of experimental pump 8.
A kind of main steam isolation valve air driven pump and relief valve described in the utility model suppress making for integrated apparatus offline
With steps are as follows:
1. the air driven pump safety that maintenance is completed is on fuel tank on lid；
It is connected with the oil circuit for leading to device by sebific duct 2. being connected with fuel tank assembly the oil circuit outlet of air driven pump；
3. the gas circuit of air driven pump is connected with empty three linked piece is pressed；
4. solenoid directional control valve is switched to accumulator loop；
5. the logical pressure of pair device is empty, and adjusts the pressure reducing valve pressed in empty three linked piece, setting pressure pneumatics power；Pneumatic pump work,
Observe air driven pump action situation；
6. suppressing the required value of setting into accumulator, at least one hour of pressure maintaining observes pressure changing, and
The ftercompction ability of air driven pump；
7. if air driven pump pass the test during test, disconnects pressure sky, switches solenoid directional control valve, and discharge valve group by pressure release
Exclude the hydraulic oil in accumulator；
8. opening the device after the relief valve to isolating valve B for installing main steam isolation valve, pressure setting is carried out to gate gurgle valve
It is tested with pressure maintaining.
Claims (9)
1. a kind of main steam isolation valve air driven pump and relief valve suppress integrated apparatus offline, it is characterised in that:
Described device is divided into three the pressure sky component of air driven pump, oil circuit component and accumulator package parts；
The pressure sky component, including isolating valve A (6) and voltage-controlled three linked piece (7)；Wherein, the left end of isolating valve A (6) and pneumatic
The connection of pump intake gas source, the right end of isolating valve A (6) are connect with the left end of voltage-controlled three linked piece (7)；
The oil circuit component provides the hydraulic oil medium of movement, including fuel tank (1), draining valve (2), temperature liquid for air driven pump
Position meter (3), air cleaner (4), return filter (5), experimental pump (8), sebific duct (9), check-valves (10), isolating valve B (11),
Test relief valve (12), pressure release hose (13), oil pressure table (14), system overflow valve (15) and solenoid directional control valve (16)；Wherein,
The cabinet of the fuel tank (1) is fixed, and fuel tank (1) is screwed between upper cover and cabinet；The experimental pump (8) is mounted on oil
On box cover, the pneumatic circuit of experimental pump (8) is connect with the right end of voltage-controlled three linked piece (7), and the oil circuit of experimental pump (8) is immersed in fuel tank
(1) in, the outlet of experimental pump (8) oil circuit is connect by the sebific duct (9) of a threaded connector with check-valves (10)；Check-valves (10)
Downstream be connected respectively with one end of one end of isolating valve B (11) and solenoid directional control valve (16)；The other end of isolating valve B (11) with
The connection of relief valve (12) left end is tested, the right end of experiment relief valve (12) is communicated in fuel tank (1) by pressure release hose (13)；?
Oil pressure table (14) are equipped between check-valves (10) and solenoid directional control valve (16)；Check-valves (10) and solenoid directional control valve (16) it
Between install overflow valve (15), overpressure protection for device；Air cleaner (4) are equipped on lid on fuel tank (1), for guaranteeing
The oil that emergency is refueled；
The accumulator package, including accumulator (18) and pressure release discharge valve group (17)；The accumulator (18) is fixed not
It is dynamic；Pressure release discharge valve group (17) from left to right successively includes inlet valve, manual draining valve and overpressure protection valve；Wherein,
The both ends of inlet valve are connect with the oil inlet and outlet of accumulator (18) and solenoid directional control valve (16) respectively；The upstream of manual draining valve with
The oil inlet and outlet of accumulator (18) connects, and downstream is connect with return filter (5)；Overpressure protection valve is in parallel with manual draining valve；
On fuel tank (1) lid on be additionally provided with return filter (5), the upper end of the return filter (5) respectively with overflow valve
(15), solenoid directional control valve (16) is connected with manual draining valve, and lower end is goed deep into fuel tank (1).
2. a kind of main steam isolation valve air driven pump as described in claim 1 and relief valve suppress integrated apparatus offline, special
Sign is: a length of 90-110cm of the pressure device, width 70-90cm, a height of 150-170cm.
3. a kind of main steam isolation valve air driven pump as described in claim 1 and relief valve suppress integrated apparatus offline, special
Sign is: the experimental pump (8) is air piston pump.
4. a kind of main steam isolation valve air driven pump as described in claim 1 and relief valve suppress integrated apparatus offline, special
Sign is: the voltage-controlled three linked piece (7) includes pressure air filter, presses empty pressure reducing valve and press empty relief valve, by pressure it is empty into
Row filtering decompression provides pressure empty power source for air driven pump.
5. a kind of main steam isolation valve air driven pump as described in claim 1 and relief valve suppress integrated apparatus offline, special
Sign is: the isolating valve B (11) is often closed, and the flanged joint with experiment relief valve (12), this road is for testing relief valve
(12) adjusting work.
6. a kind of main steam isolation valve air driven pump as described in claim 1 and relief valve suppress integrated apparatus offline, special
Sign is: the check-valves (10) is spring loaded check valve.
7. a kind of main steam isolation valve air driven pump as described in claim 1 and relief valve suppress integrated apparatus offline, special
Sign is: the air cleaner (4) is connected by screw to fuel tank upper cover.
8. a kind of main steam isolation valve air driven pump as described in claim 1 and relief valve suppress integrated apparatus offline, special
Sign is: being piston among the accumulator (18), is nitrogen above piston, lower section is hydraulic oil.
9. a kind of main steam isolation valve air driven pump as described in claim 1 and relief valve suppress integrated apparatus offline, special
Sign is: the solenoid directional control valve (16) is two-bit triplet solenoid valve, for switching the downstream user of experimental pump (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820333176.2U CN208502996U (en) | 2018-03-12 | 2018-03-12 | A kind of main steam isolation valve air driven pump and relief valve suppress integrated apparatus offline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820333176.2U CN208502996U (en) | 2018-03-12 | 2018-03-12 | A kind of main steam isolation valve air driven pump and relief valve suppress integrated apparatus offline |
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| Publication Number | Publication Date |
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| CN208502996U true CN208502996U (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820333176.2U Active CN208502996U (en) | 2018-03-12 | 2018-03-12 | A kind of main steam isolation valve air driven pump and relief valve suppress integrated apparatus offline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032401A (en) * | 2020-09-24 | 2020-12-04 | 三门核电有限公司 | Control platform and method for nuclear power main steam isolation valve actuating mechanism |
-
2018
- 2018-03-12 CN CN201820333176.2U patent/CN208502996U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032401A (en) * | 2020-09-24 | 2020-12-04 | 三门核电有限公司 | Control platform and method for nuclear power main steam isolation valve actuating mechanism |
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