CN209195492U - A kind of online isolating device of crisis warning system for Turbo-generator Set - Google Patents

Abstract

The utility model discloses a kind of online isolating devices of the crisis warning system for Turbo-generator Set, including integrated package, the two sides of the integrated package are all separately installed with HP ball valve and AST ball valve, and the side at the top of integrated package close to HP ball valve is equipped with HP high-voltage isolation device, side at the top of the integrated package close to AST ball valve is equipped with AST isolating device, the input terminal of the AST isolating device is equipped with AST solenoid valve, the input terminal of the HP high-voltage isolation device is equipped with HP solenoid valve, the middle position at the top of the integrated package is separately installed with the first AST pressure gauge, first HP pressure gauge, 2nd AST pressure gauge and the 2nd HP pressure gauge.The utility model installs the emergency trip that provides in this patent in thread test isolating device, can be in thread test, maintenance, replacement AST solenoid valve.

Description

A kind of online isolating device of crisis warning system for Turbo-generator Set

Technical field

The utility model relates to automotive field, specially a kind of crisis warning system for Turbo-generator Set online every From device.

Background technique

Turbine emergency interrupting system, abbreviation ETS.Its task is to protect steamer when abnormal conditions occurs in steam turbine The safety of machine equipment.Crisis warning system is divided into two kinds of situations.One is in unit is run, to prevent equipment component is not normal from making It is badly damaged at unit, all intake valves are closed when being abnormal situation equipped with autostop crisis warning system (AST), Hard stop；Second is that overspeed protection control system (OPC), makes high voltage adjusting steam valve and reheating servo valve temporary close, reduce Steam turbine air inflow and power, but halt turbines cannot be made, autostop crisis warning system is divided into two levels.First is The tripping electric signal of emergency trip control device (ETS) can make AST electromagnetism valve events, make AST oil circuit draining, all intake valve closes It closes, compressor emergency shutdown；Second is that mechanical overspeed protection control and manual shut-down part can be such that AST oil circuit lets out when its movement by diaphragm valve Oil, all inlet valves are closed, and compressor emergency shutdown plays the role of emergency protection, and the parameter that micro- jerk brake gear is monitored has: steam turbine Hypervelocity, thrust bearing wearing, lubricating oil force down, and EH low oil pressure, condenser vacuum is low, and it is to adjust security personnel that steam turbine, which reliably interdicts, The basic function of system is, it can be achieved that the orderly closedown of unit and in emergency circumstances trip protection, protect steam turbine itself not occur The expansion of accident is damaged and avoids, system requirements emergency trip device action is fast and reliable.Crisis warning system is that steam turbine is protected The most key important component of peace system, in view of its critical importance, security reliability should attract great attention.

But current original crisis warning system has the following deficiencies: can only test single AST solenoid valve online, and original system is set In meter, four AST solenoid valves can only individually be made in thread test, can not series, parallel experiment.And when testing, two can only be passed through ASP pressure switch determines whether solenoid valve is working properly, and AST solenoid valve, integrated block assembly can not be isolated, on-bne repair unit In normal course of operation, if it find that the component on AST solenoid valve, integrated block assembly can not work normally, external leakage has The problems such as, it can only work, cannot be isolated, on-line maintenance " in spite of illness ".Shutdown could be handled hidden after unit needs application to reduce load Suffer from, once causing " non-to stop ", will cause very huge economic loss, be unfavorable for the long-term safety stable operation of unit.It can not be real-time ASP pressure is monitored, former emergency trip device is equipped with ASP pressure monitoring point among four series-parallel AST electromagnetism valve positions, but makes It is two pressure switches, can only whether working properly as four solenoid valves of qualitative analysis.

Utility model content

The purpose of this utility model is to provide a kind of crisis warning systems for Turbo-generator Set, and dress to be isolated online It sets, to solve the problems mentioned in the above background technology.

To achieve the above object, the utility model provides the following technical solutions: a kind of for the critical of Turbo-generator Set The online isolating device of interrupting system, including integrated package, the two sides of the integrated package are all separately installed with HP ball valve and AST ball valve, And the side at the top of integrated package close to HP ball valve is equipped with HP high-voltage isolation device, close AST ball valve at the top of the integrated package Side is equipped with AST isolating device, and the input terminal of the AST isolating device is equipped with AST solenoid valve, the HP high_voltage isolation dress The input terminal set is equipped with HP solenoid valve, the middle position at the top of the integrated package be separately installed with the first AST pressure gauge, First HP pressure gauge, the 2nd AST pressure gauge and the 2nd HP pressure gauge, the middle position at the top of the integrated package are equipped with pressure Transmitter, the middle position of described integrated package one end are equipped with electro-hydraulic reversing valve, and the integrated package is close to electro-hydraulic reversing valve One end is equipped with emergency trip device, and integrated package is equipped with test recharging oil device far from one end of electro-hydraulic reversing valve, and integrated Middle position at the top of block close to electro-hydraulic reversing valve one end is equipped with control panel, the control panel by conducting wire respectively with Test recharging oil device, emergency trip device, HP solenoid valve, AST solenoid valve, HP high-voltage isolation device and AST isolating device are electrically connected It connects.

Preferably, the four corners of the integrated package bottom are all equipped with bracket.

Preferably, the two sides at the integrated package both ends are all equipped with junction block, and junction block is filled with HP high_voltage isolation respectively It sets and is connect with the output end of AST isolating device with input terminal.

Preferably, the input terminal of the first AST pressure gauge is mounted on the output end of HP high-voltage isolation device, and described second The input terminal of AST pressure gauge is mounted on the input terminal of HP high-voltage isolation device, and the input terminal of the first HP pressure gauge is mounted on The input terminal of the output end of AST isolating device, the 2nd HP pressure gauge is mounted on the input terminal of AST isolating device.

Preferably, the pressure transmitter is mounted on the output end of AST isolating device.

Compared with prior art, the utility model has the beneficial effects that this is used for the emergency trip system of Turbo-generator Set Online isolating device of uniting installs the emergency trip that provides in this patent in thread test isolating device, can be in thread test, maintenance, more All components on AST solenoid valve and electromagnetic valve component are changed, meanwhile, in maintenance process, if there are abnormal feelings in unit Condition needs emergency shutdown, and the multiple protectors such as hypervelocity flyball, manual shut-down mechanism, machine down time electromagnet still can be just It is often used, unit safety will not be jeopardized.

Detailed description of the invention

Fig. 1 is the main view of the utility model；

Fig. 2 is the top view of the utility model；

Fig. 3 is the connection schematic diagram of the utility model.

In figure: 1, HP ball valve；2, integrated package；3, HP high-voltage isolation device；4, the first AST pressure gauge；5, the first HP pressure Table；6, AST isolating device；7, AST ball valve；8, electro-hydraulic reversing valve；9, bracket；10, junction block；11, the 2nd AST pressure gauge； 12, the 2nd HP pressure gauge；13, pressure transmitter；14, HP solenoid valve；15, AST solenoid valve；16, control panel；17, test is mended Oily device；18, emergency trip device.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-3 is please referred to, a kind of embodiment provided by the utility model: a kind of emergency trip for Turbo-generator Set The online isolating device of system, including integrated package 2, the two sides of integrated package 2 are all separately installed with HP ball valve 1 and AST ball valve 7, and collect Blocking 2 top is equipped with HP high-voltage isolation device 3 close to the side of HP ball valve 1, and 2 top of integrated package is close to the side of AST ball valve 7 AST isolating device 6 is installed, the input terminal of AST isolating device 6 is equipped with AST solenoid valve 15, HP high-voltage isolation device 3 it is defeated Enter end and HP solenoid valve 14 is installed, the middle position at the top of integrated package 2 is separately installed with the first AST pressure gauge 4, the first HP The middle position of pressure gauge 5, the 2nd AST pressure gauge 11 and the 2nd HP pressure gauge 12,2 top of integrated package is equipped with pressure inverting Device 13, the middle position of 2 one end of integrated package are equipped with electro-hydraulic reversing valve 8, and integrated package 2 is pacified close to one end of electro-hydraulic reversing valve 8 Equipped with emergency trip device 18, and integrated package 2 is equipped with test recharging oil device 17 far from one end of electro-hydraulic reversing valve 8, and integrated Middle position of 2 top of block close to 8 one end of electro-hydraulic reversing valve is equipped with control panel 16, and control panel 16 is distinguished by conducting wire With test recharging oil device 17, emergency trip device 18, HP solenoid valve 14, AST solenoid valve 15, HP high-voltage isolation device 3 and AST Isolating device 6 is electrically connected.

In this embodiment: the four corners of 2 bottom of integrated package are all equipped with bracket 9, play a supporting role, 2 both ends of integrated package Two sides junction block 10 is all installed, and the output end with HP high-voltage isolation device 3 and AST isolating device 6 respectively of junction block 10 It is connect with input terminal, convenient for fuel-displaced and into having, the input terminal of the first AST pressure gauge 4 is mounted on the output of HP high-voltage isolation device 3 End, the input terminal of the 2nd AST pressure gauge 11 are mounted on the input terminal of HP high-voltage isolation device 3, the first HP pressure gauge 5 Input terminal be mounted on the output end of AST isolating device 6, the input terminal of the 2nd HP pressure gauge 12 is mounted on AST isolation dress 6 input terminal is set, convenient for detection, pressure transmitter 13 is mounted on the output end of AST isolating device 6.

Working principle: under normal operating conditions, the two isolating device ball valves newly increased are opened, 8 power loss of electro-hydraulic reversing valve, Repairing ball valve is closed.At this point, Safety oil has two-way to generate channel, all the way through HP high-voltage isolation device 3, into emergency trip device Throttle orifice generates in 18；Another way is tested 17 throttle orifice of recharging oil device and is generated.When detect emergency trip device work it is abnormal When (ASP oil pressure exception, external leakage etc.), (it should be set in AST isolating device 6 to the solenoid valves of two isolating devices first There is a pressure transmitter 13, in AST pressure reduction to preset numerical value, trigger switch, the electromagnetism of two isolating devices Valve obtains electric, shutdown oil circuit), the ball valve before solenoid valve should be then closed, high pressure oil and emergency trip device 18 is reliably isolated. Pressure gauge before observation is respectively in ball valve simultaneously should be normal value, and the pressure gauge after isolating device should drop to 0.At this point, Show that 18 system of emergency trip device is effectively isolated.It can carry out replacing solenoid valve, secondary valve, cleaning section online at this time The work such as discharge orifice.Meanwhile after emergency trip device to be confirmed has been effectively isolated, it can also open on test recharging oil device 17 Ball valve, the pressure after shut-off valve rise to it is normal after, so that it may the online any test for carrying out emergency trip device 18, Without causing unit chaser.In unit experimentation, there are abnormal conditions, still can by oil motor quick closing valve solenoid valve, Manual shut-down mechanism, machine down time electromagnet and flyball realize multiple redundancy protection, will not cause unit driving, overhaul After the completion, four AST solenoid valves (often electrification) should be given first, after determining that AST, OPC oil pressure are normal, then gives isolation dress again The solenoid valve power-off set, ball valve are opened, and the ball valve on recharging oil device is finally closed, and system enters normal operating conditions at this time, inspection It repairs and finishes.

To those skilled in the art, the utility model is not limited to the details of the above exemplary embodiments, Er Qie Without departing substantially from the utility model spirit or scope in the case where, can realize the utility model in other specific forms.Therefore, The embodiments of the present invention are exemplary, and are non-limiting.The scope of the utility model is by appended claims Rather than above description limits, it is intended that by all changes that come within the meaning and range of equivalency of the claims capsule It includes in the utility model.Any reference signs in the claims should not be construed as limiting the involved claims.

Claims (5)

1. a kind of online isolating device of crisis warning system for Turbo-generator Set, including integrated package (2), feature exists In: the two sides of the integrated package (2) are all separately installed with HP ball valve (1) and AST ball valve (7), and close to HP at the top of integrated package (2) The side of ball valve (1) is equipped with HP high-voltage isolation device (3), and the side at the top of the integrated package (2) close to AST ball valve (7) is pacified Equipped with AST isolating device (6), the input terminal of the AST isolating device (6) is equipped with AST solenoid valve (15), the HP high pressure every Input terminal from device (3) is equipped with HP solenoid valve (14), and the middle position at the top of the integrated package (2) is separately installed with First AST pressure gauge (4), the first HP pressure gauge (5), the 2nd AST pressure gauge (11) and the 2nd HP pressure gauge (12), it is described integrated Middle position at the top of block (2) is equipped with pressure transmitter (13), and the middle position of described integrated package (2) one end is equipped with Electro-hydraulic reversing valve (8), the integrated package (2) are equipped with emergency trip device (18) close to the one end of electro-hydraulic reversing valve (8), and collect Blocking (2) are equipped with test recharging oil device (17) far from the one end of electro-hydraulic reversing valve (8), and close to electro-hydraulic at the top of integrated package (2) The middle position of reversal valve (8) one end is equipped with control panel (16), the control panel (16) by conducting wire respectively with examination Test recharging oil device (17), emergency trip device (18), HP solenoid valve (14), AST solenoid valve (15), HP high-voltage isolation device (3) It is electrically connected with AST isolating device (6).

2. the online isolating device of a kind of crisis warning system for Turbo-generator Set according to claim 1, special Sign is: the four corners of integrated package (2) bottom are all equipped with bracket (9).

3. the online isolating device of a kind of crisis warning system for Turbo-generator Set according to claim 1, special Sign is: the two sides at integrated package (2) both ends are all equipped with junction block (10), and junction block (10) respectively with HP high_voltage isolation Device (3) and the output end of AST isolating device (6) are connect with input terminal.

4. the online isolating device of a kind of crisis warning system for Turbo-generator Set according to claim 1, special Sign is: the input terminal of the first AST pressure gauge (4) is mounted on the output end of HP high-voltage isolation device (3), and described second The input terminal of AST pressure gauge (11) is mounted on the input terminal of HP high-voltage isolation device (3), the first HP pressure gauge (5) it is defeated Enter the output end that end is mounted on AST isolating device (6), the input terminal of the 2nd HP pressure gauge (12) is mounted on AST isolation dress Set the input terminal of (6).

5. the online isolating device of a kind of crisis warning system for Turbo-generator Set according to claim 1, special Sign is: the pressure transmitter (13) is mounted on the output end of AST isolating device (6).