CN109374305A - A kind of MTU956 diesel engine main valve Performance Test System and its test method - Google Patents

A kind of MTU956 diesel engine main valve Performance Test System and its test method Download PDF

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Publication number
CN109374305A
CN109374305A CN201811390680.7A CN201811390680A CN109374305A CN 109374305 A CN109374305 A CN 109374305A CN 201811390680 A CN201811390680 A CN 201811390680A CN 109374305 A CN109374305 A CN 109374305A
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CN
China
Prior art keywords
valve
main valve
pressure
pressure gauge
test
Prior art date
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Pending
Application number
CN201811390680.7A
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Chinese (zh)
Inventor
初向南
王小军
严斌
姜国营
王金柱
曹登洪
周燕
李品呈
邹付余
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China General Nuclear Power Corp
CGN Power Co Ltd
Yangjiang Nuclear Power Co Ltd
Original Assignee
China General Nuclear Power Corp
CGN Power Co Ltd
Yangjiang Nuclear Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by China General Nuclear Power Corp, CGN Power Co Ltd, Yangjiang Nuclear Power Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN201811390680.7A priority Critical patent/CN109374305A/en
Publication of CN109374305A publication Critical patent/CN109374305A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • G01M15/04Testing internal-combustion engines
    • G01M15/05Testing internal-combustion engines by combined monitoring of two or more different engine parameters

Abstract

A kind of MTU956 diesel engine main valve Performance Test System and its test method, including performing leak test system and opening time test macro, performing leak test system includes providing the gas source quick coupling of compressed air for entire performing leak test system, compressed air is divided into the two-position three way magnetic valve of two-way, and the pressure pipeline one and pressure pipeline two being connected respectively with the first gas port Z and flange P of main valve, it further include the pressure gauge M3 being connected to the blind plate of main valve, pressure reducing valve and pressure gauge M1 is arranged in sequence on pressure pipeline one from two-position three way magnetic valve to main valve, pressure pipeline two is equipped with pressure gauge M2;Opening time test macro include for and meanwhile be two-position three way magnetic valve and main valve positional relationship sensor S power supply 24V DC power supply, and the oscillograph being connect simultaneously with two-position three way magnetic valve and main valve.Measuring accuracy of the present invention is high, it is not necessary that main valve is returned to external producer, reduces production cost, saves the repair time.

Description

A kind of MTU956 diesel engine main valve Performance Test System and its test method
Technical field
The present invention relates to diesel engine main valve performance test fields, and in particular to a kind of MTU956 diesel engine main valve performance test System and its test method.
Background technique
Nuclear power plant MTU956 diesel oil owner's trigger valve uses piston type pneumatic pilot valve, the compact complexity of the valve mechanism, valve Door is internal to be made of piston, spring, all kinds of sealing elements and valve opening position sensor, because rubber parts is limited using the phase in longevity, Maintenance department of power plant needs periodically to carry out the replacement of main valve sealing element.And nuclear power plant requires Emergency diesel in bus power loss signal Starting is completed in 10S after appearance, therefore very high to the performance requirement of main trigger valve, will lead to main valve evidence as maintenance process is improper Dynamic or slow movement influences diesel engine starting success rate and starting time, wants to guarantee that the performance after main valve maintenance meets use It asks, needs to test the performance of main valve, including performing leak test and opening time test, but power plant is not able to carry out this Tool is suppressed in work, and the maintenance of the valve at present relies primarily on the German factory repair test of return, influences nuclear power plant's work effect Rate, maintenance cost are high.
Summary of the invention
The object of the present invention is to provide a kind of MTU956 diesel engine main valve Performance Test System and its test methods, to solve Prior art main valve testing time too long technical problem;And solve the problems, such as that prior art production cost is excessively high.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of MTU956 diesel engine main valve Performance Test System, which is characterized in that including performing leak test system and unlatching Time test system, the performing leak test system include that the gas source that provides compressed air for entire performing leak test system is quick Compressed air is divided into the two-position three way magnetic valve of two-way by connector, and is connected respectively with the first gas port Z and flange P of main valve Pressure pipeline one and pressure pipeline two, further include the pressure gauge M3 being connected to the blind plate of main valve, on the pressure pipeline one from Pressure reducing valve and pressure gauge M1 is arranged in sequence to main valve in two-position three way magnetic valve, and the pressure pipeline two is equipped with pressure gauge M2;
The opening time test macro include for and meanwhile be two-position three way magnetic valve and main valve positional relationship sensor S The 24V DC power supply of power supply, and the oscillograph being connect simultaneously with two-position three way magnetic valve and main valve.
It is further preferred that the pressure of the compressed air of the gas source quick coupling access is 38~42bar.
Further, the pressure of the compressed air of the gas source quick coupling access is 40bar.
Further, compressed air is depressurized to 6-7bar by the pressure reducing valve, after being passed through first gas port Z, to drive master The mechanical pilot mechanism of valve.
Further, the main valve is piston type pneumatic pilot valve.
In addition, the connection electric wire between the 24V DC power supply and two-position three way magnetic valve is equipped with and is spaced apart.
It is further preferred that the main valve includes mandril, piston, valve body, spring, limit sleeve, upper slide valve, lower slide valve, guiding Bushing, end cap, slide valve lever, valve position switch, sealing ring, exhaust valve and handle.
A kind of test method of MTU956 diesel engine main valve Performance Test System, which comprises the following steps:
S1, the leakproofness for judging main valve: two-position three way magnetic valve is closed, pressure gauge M1 and pressure gauge M3 registration are at this time 0bar;Pressure gauge M2 registration maintains 40bar, and pressure maintaining 5min simultaneously carries out leakage detection to main valve using leakage detection liquid;As pressure gauge M2 is pressed Power is stable and pressure gauge M1 and pressure gauge M3 are constant, then judges that main valve leakproofness is good;
S2, the test of main valve opening time: it opens power supply and is spaced apart, adjust pressure reducing valve, it is ensured that pressure gauge M1 pressure gauge is shown When registration is identical on 5bar, pressure gauge M2 and pressure gauge M3, oscillograph calculates two-position three way magnetic valve and obtains electric and positional relationship biography The time interval that sensor S triggers valve opening signal is within 0.5S;
The sealing propertytest of S3, guide's atmospheric pressure deficiency main valve: first adjustment pressure reducing valve to pressure gauge M1 shows 0.5bar, i.e., Guide's atmospheric pressure is insufficient at this time, checks that pressure gauge M3 pressure recovery is 0, pressure gauge M2 pressure is still 40bar, it is ensured that main valve at this time It is not opened;
S4, manual test main valve switch performance, the handle of Manual press main valve, observation pressure gauge M1 registration remain 0, pressure It is 40bar that power table M2 and pressure gauge M3, which measures pressure, and valve position sensor S should trigger valve opening signal;
S5, reinspection: sequentially repeating aforesaid operations step 2-3 times, and repeated authentication result is qualified then to illustrate main valve performance just Often.
Implement the present invention can achieve it is following the utility model has the advantages that
The present invention can realize main valve seal tightness test, function test, opening time test triple functions under identical platform, Purchase after comprehensive verifying maintenance or newly the quality for main trigger valve spare part of showing up, it is ensured that the starting reliability of diesel-engine equipment;
Measuring accuracy of the present invention is high, and ease in use, save the cost, the platform opens main trigger valve using high-precision oscillograph It opens the time to be tested, measuring accuracy is high, it is not necessary that main valve is returned to external producer, reduces production cost, saves the repair time.
Scalability of the present invention is strong.The platform except can be used for overhaul after main trigger valve test in addition to, it may also be used for main starting The analysis of the reason of valve defect and comparison, can realize the verifying to other similar valves by adjusting each connection size and air pressure, expand Malleability is strong, and use scope is wide.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of MTU956 diesel engine main valve Performance Test System of the present invention;
Fig. 2 is the structural schematic diagram of main valve of the present invention.
The drawing reference numeral of specific embodiment illustrates:
1- gas source quick coupling;2- two-position three way magnetic valve;3- elder generation gas port Z;4- flange P;5- pressure pipeline one;6- pressure Hydraulic piping two;7- main valve;71- mandril;72- piston;73- valve body;74- spring;75- limit sleeve;The upper slide valve of 76-;77- glides Valve;78- pilot bushing;79- end cap;80- slide valve lever;81- valve position switch;82- sealing ring;83- exhaust valve;84- handle;8- subtracts Pressure valve;9- pressure gauge M1;10- pressure gauge M2;11- blind plate;12- pressure gauge M3;13- positional relationship sensor S;14- oscillograph; 15-24V DC power supply;16- is spaced apart.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail A specific embodiment of the invention.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.
A kind of MTU956 diesel engine main valve Performance Test System, as shown in Figure 1, when including performing leak test system and opening Between test macro, performing leak test system includes providing the gas source quick coupling 1 of compressed air for entire performing leak test system, Compressed air is divided into the two-position three way magnetic valve 2 of two-way, and be connected respectively with the first gas port Z3 and flange P4 of main valve 7 Pressure pipeline 1 and pressure pipeline 26, further include the pressure gauge M312 being connected to the blind plate 11 of main valve 7, on pressure pipeline 1 Pressure reducing valve 8 and pressure gauge M19 are arranged in sequence from two-position three way magnetic valve 2 to main valve 7, pressure pipeline 26 is equipped with pressure gauge Compressed air is depressurized to 6-7bar by M210, pressure reducing valve 8, after being passed through first gas port Z3, to drive mechanical guide's machine of main valve 7 Structure.
Opening time test macro include for and meanwhile be two-position three way magnetic valve 2 and main valve 7 positional relationship sensor S13 The 24V DC power supply 15 of power supply, and the oscillograph 14 being connect simultaneously with two-position three way magnetic valve 2 and main valve 7.The fast quick access of gas source The pressure of the compressed air of first 1 access is 38~42bar, and the pressure for the compressed air that gas source quick coupling 1 accesses is preferably Connection electric wire between 40bar, 24V DC power supply 15 and two-position three way magnetic valve 2, which is equipped with, is spaced apart 16.
Main valve 7 is piston type pneumatic pilot valve, as shown in Fig. 2, main valve 7 includes the mandril for valve transmission to be manually operated 71, for bearing the piston 72 of Pneumatic Transmission, valve body 73, restoring the spring 74 of valve seal power, for limiting work for providing Fill in limit sleeve 75, the upper slide valve 76 for guide's valve action, the lower slide valve for being switched on/off compressed air of extreme position 77, for guiding the pilot bushing 78 of downslide valve piston direction of action, for valve seal and limitation downslide valve piston movement pole The end cap 79 of limit, the slide valve lever 80 for guiding downslide valve piston direction of action, the valve whether fully opened for feeding back valve Bit switch 81, for the sealing ring 82 of sealing, the exhaust valve 83 for residual compression air to be discharged and for valve to be manually operated Handle 84.
A kind of test method of MTU956 diesel engine main valve Performance Test System, which comprises the following steps:
S1, the leakproofness for judging main valve 7: two-position three way magnetic valve 2 is closed, pressure gauge M19 and pressure gauge M312 show at this time Number is 0bar;Pressure gauge M210 registration maintains 40bar, and pressure maintaining 5min simultaneously carries out leakage detection to main valve 7 using leakage detection liquid;Such as pressure Table M210 pressure is stable and pressure gauge M19 and pressure gauge M312 are constant, then judges that 7 leakproofness of main valve is good;
S2, the test of 7 opening time of main valve: it opens power supply and is spaced apart 16, adjust pressure reducing valve 8, it is ensured that pressure gauge M19 pressure gauge is aobvious When showing that registration is identical on 5bar, pressure gauge M210 and pressure gauge M312, oscillograph 14 calculates two-position three way magnetic valve 2 and obtains electric and position The time interval for setting relationship sensors S13 triggering valve opening signal is within 0.5S;
The sealing propertytest of S3, guide's atmospheric pressure deficiency main valve 7: first adjustment pressure reducing valve 8 to pressure gauge M19 is shown 0.5bar, i.e., guide's atmospheric pressure is insufficient at this time, checks that pressure gauge M312 pressure recovery is 0, pressure gauge M210 pressure is still 40bar, it is ensured that main valve 7 is not opened at this time;
S4,7 switch performance of manual test main valve, the handle 84 of Manual press main valve 7, observation pressure gauge M19 registration are kept It is 0, pressure gauge M210 and pressure gauge M312 measure pressure as 40bar, and valve position sensor S should trigger valve opening signal;
S5, reinspection: sequentially repeating aforesaid operations step 2-3 times, and repeated authentication result is qualified then to illustrate 7 performance of main valve just Often.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much Form, all of these belong to the protection of the present invention.

Claims (8)

1. a kind of MTU956 diesel engine main valve Performance Test System, which is characterized in that when including performing leak test system and opening Between test macro, the performing leak test system includes the fast quick access of gas source for providing compressed air for entire performing leak test system Head (1), compressed air is divided into the two-position three way magnetic valve (2) of two-way, and respectively with the first gas port Z (3) of main valve (7) and Flange P (4) connected pressure pipeline one (5) and pressure pipeline two (6), further includes the pressure being connected to the blind plate (11) of main valve (7) Power table M3 (12), be arranged in sequence from two-position three way magnetic valve (2) to main valve (7) on the pressure pipeline one (5) pressure reducing valve (8) and Pressure gauge M1 (9), the pressure pipeline two (6) are equipped with pressure gauge M2 (10);
The opening time test macro includes being while being the positional relationship sensing of two-position three way magnetic valve (2) and main valve (7) The 24V DC power supply (15) of device S (13) power supply, and the oscillograph being connect simultaneously with two-position three way magnetic valve (2) and main valve (7) (14)。
2. a kind of MTU956 diesel engine main valve Performance Test System as described in claim 1, it is characterised in that: the gas source is fast The pressure of the compressed air of quick coupling (1) access is 38~42bar.
3. a kind of MTU956 diesel engine main valve Performance Test System as described in claim 1, it is characterised in that: the gas source is fast The pressure of the compressed air of quick coupling (1) access is 40bar.
4. a kind of MTU956 diesel engine main valve Performance Test System as described in claim 1, it is characterised in that: the pressure reducing valve (8) compressed air is depressurized to 6-7bar, after being passed through first gas port Z (3), to drive the mechanical pilot mechanism of main valve (7).
5. a kind of MTU956 diesel engine main valve Performance Test System as described in claim 1, it is characterised in that: the main valve It (7) is piston type pneumatic pilot valve.
6. a kind of MTU956 diesel engine main valve Performance Test System as described in claim 1, it is characterised in that: the 24V is straight Connection electric wire between galvanic electricity source (15) and two-position three way magnetic valve (2), which is equipped with, is spaced apart (16).
7. a kind of MTU956 diesel engine main valve Performance Test System as described in claim 1, it is characterised in that: the main valve (7) include mandril (71), piston (72), valve body (73), spring (74), limit sleeve (75), upper slide valve (76), lower slide valve (77), Pilot bushing (78), end cap (79), slide valve lever (80), valve position switch (81), sealing ring (82), exhaust valve (83) and handle (84)。
8. a kind of test method of MTU956 diesel engine main valve Performance Test System as described in claim 1~7 any one, Characterized by comprising the following steps:
S1, the leakproofness for judging main valve (7): it closes two-position three way magnetic valve (2), at this time pressure gauge M1 (9) and pressure gauge M3 (12) registration is 0bar;Pressure gauge M2 (10) registration maintains 40bar, and pressure maintaining 5min simultaneously carries out main valve (7) using leakage detection liquid Leakage detection;If pressure gauge M2 (10) pressure is stable and pressure gauge M1 (9) and pressure gauge M3 (12) are constant, then judge that main valve (7) is close Envelope property is good;
S2, the test of main valve (7) opening time: it opens power supply and is spaced apart (16), adjust pressure reducing valve (8), it is ensured that pressure gauge M1 (9) pressure Table shows 5bar, and when pressure gauge M2 (10) is identical with registration on pressure gauge M3 (12), oscillograph (14) calculates two-position three-way electromagnetic It is within 0.5S that valve (2), which obtains the electric time interval with positional relationship sensor S (13) triggering valve opening signal,;
The sealing propertytest of S3, guide's atmospheric pressure deficiency main valve (7): pressure reducing valve (8) to pressure gauge M1 (9) display is first adjusted 0.5bar, i.e., guide's atmospheric pressure is insufficient at this time, checks that pressure gauge M3 (12) pressure recovery is 0, pressure gauge M2 (10) pressure is still 40bar, it is ensured that main valve (7) is not opened at this time;
S4, manual test main valve (7) switch performance, the handle (84) of Manual press main valve (7) observe pressure gauge M1 (9) registration 0 is remained, it is 40bar that pressure gauge M2 (10) and pressure gauge M3 (12), which measure pressure, and valve position sensor S should trigger valve opening letter Number;
S5, reinspection: sequentially repeating aforesaid operations step 2-3 times, and repeated authentication result is qualified then to illustrate main valve (7) performance just Often.
CN201811390680.7A 2018-11-21 2018-11-21 A kind of MTU956 diesel engine main valve Performance Test System and its test method Pending CN109374305A (en)

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CN201811390680.7A CN109374305A (en) 2018-11-21 2018-11-21 A kind of MTU956 diesel engine main valve Performance Test System and its test method

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Application Number Priority Date Filing Date Title
CN201811390680.7A CN109374305A (en) 2018-11-21 2018-11-21 A kind of MTU956 diesel engine main valve Performance Test System and its test method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110987444A (en) * 2019-12-13 2020-04-10 贵州航天计量测试技术研究所 Calibration device and calibration method for time zero of multi-parameter test system
CN111596148A (en) * 2020-04-16 2020-08-28 岭东核电有限公司 Test method, device and equipment for starting diesel engine in case of power failure of emergency bus of nuclear power station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110987444A (en) * 2019-12-13 2020-04-10 贵州航天计量测试技术研究所 Calibration device and calibration method for time zero of multi-parameter test system
CN111596148A (en) * 2020-04-16 2020-08-28 岭东核电有限公司 Test method, device and equipment for starting diesel engine in case of power failure of emergency bus of nuclear power station

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