CN105910745A - Device and method of monitoring axial thrust of rotating machinery rotor - Google Patents
Device and method of monitoring axial thrust of rotating machinery rotor Download PDFInfo
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- CN105910745A CN105910745A CN201610472411.XA CN201610472411A CN105910745A CN 105910745 A CN105910745 A CN 105910745A CN 201610472411 A CN201610472411 A CN 201610472411A CN 105910745 A CN105910745 A CN 105910745A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000006698 induction Effects 0.000 claims description 44
- 238000001514 detection method Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 7
- 241000446313 Lamella Species 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 67
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 208000033999 Device damage Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants
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Abstract
The invention relates to a device and a method of monitoring axial thrust of a rotating machinery rotor. The existing monitoring device is complicated, and the method has low accuracy. The device comprises a rotor and a bearing box sleeving the rotor, wherein the outer wall of the rotor is provided with an annular thrust disc; the thrust disc is provided with annular thrust boring mills linked axially; the bearing box is internally provided with supporting sensing pieces matched with and abutting against the thrust boring mills; and the thrust disc squeezes the sensing surface of the supporting sensing piece via the thrust boring mill. Through additionally arranging the supporting sensing pieces directly sensing the axial thrust of the rotor in the existing bearing box, real-time changes of the axial thrust of the rotation shaft can be directly monitored, damages to the thrust pad or the thrust disc of the device due to monitoring delay can be prevented, requirements on environment temperature surrounding a monitoring working station are low, the device has a simple structure, and improvement on the original structure is facilitated. The thrust disc transmits the axial thrust to the sensing surface of the supporting sensing piece via the thrust boring mill, and real-time monitoring of the axial thrust data is realized.
Description
Technical field
The present invention relates to field of thermal power, be specifically related to a kind of device and method for monitoring rotor axial thrust.
Background technology
Large rotating machinery, in normal course of operation, can produce the axial thrust along steam flow direction.Use the huge axial thrust of following several Main Means balance large rotating machinery at present, including: 1, high pressure shaft seal two ends arrange dummy piston with reverse differential pressure；2, high, intermediate pressure cylinder reversed arrangement；3, low pressure (LP) cylinder shunting is arranged；4, on impeller, balance pipe is offered；5, thrust bearing.
After large rotating machinery uses above-mentioned front 4 kinds of axial thrust balancing means, the axial thrust of running rotor is balanced by thrust bearing, maintains the normal axial gap between large rotating machinery rotor and stationary parts.Therefore the normal work of thrust bearing is one of prerequisite of large rotating machinery safety and economic operation.
Thrust bearing is typically made up of thrust bearing shoe valve and thrust disc two parts, thrust bearing shoe valve is arranged on thrust bearing shoe valve seat, lubricating oil it is full of between thrust bearing shoe valve and thrust disc, when after rotor high-speed rotation, one layer of oil film can be set up between thrust disc and thrust bearing shoe valve, prevent thrust disc from directly contacting with thrust bearing shoe valve and cause thrust bearing shoe valve or thrust disc to burn because temperature is too high.
At the running of large rotating machinery, due to reasons such as its flow passage component structure failure, foulings, its axial thrust is caused to increase suddenly.This oil film that can destroy between thrust bearing shoe valve and thrust disc, causes thrust bearing shoe valve directly to contact the accident rubbed and burn with thrust disc and occurs.So, monitoring large rotating machinery rotor axial thrust is one of premise ensureing large rotating machinery safe operation.Additionally, the axial thrust of large rotating machinery rotor is to reflect its flow passage component whether normal key parameter, by its continuous monitoring, can being that large rotating machinery through-flow fault expert diagnostic system provides basic data.
At present, in the normal course of operation of large rotating machinery, mainly by the indirect means such as axial displacement of the lubricating oil temperature between monitoring thrust bearing shoe valve and thrust disc, rotor monitor the axial thrust of rotor whether normal interval in, it is impossible to obtain axial thrust numerical value accurately.Owing to these indirect monitoring parameters are affected by many factors, when axial thrust increases suddenly, these indirect means can not reflection timely and accurately, and the accident causing thrust bearing shoe valve to burn happens occasionally, and has a strong impact on the security reliability of equipment.
For the problems referred to above, current portions expert it is also proposed improvement project to the measurement of small rotary machinery (such as compressor etc.) rotor axial thrust, such as, application publication number is that the patent of invention of CN204330190U proposes a kind of installation resistance-strain type of dynamometer meter on thrust bearing shoe valve, measures the axial thrust acting on thrust bearing shoe valve.But this strain-type force meter also has obvious shortcoming: site environment is required height, and its measurement accuracy is influenced by ambient temperature greatly；When measuring load and repeatedly changing, there is relatively big " mechanical hysteresis " phenomenon；There is strain limit, it is more difficult to meet the measurement demand of large rotating machinery rotor axial thrust；And field apparatus is complicated.Disadvantage mentioned above makes in the more difficult measurement being directly applied to large rotating machinery rotor axial thrust of this method.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of device and method for monitoring rotary machine rotor axial thrust,
The present invention is accomplished by: a kind of device for monitoring rotary machine rotor axial thrust, including rotor and be nested with the bearing housing on described rotor, one ring-type thrust disc is set on described rotor outer wall, described thrust disc is provided with the ring-type thrust bearing shoe valve seat axially linked with it, being provided with in described bearing housing and mate the support induction pieces conflicted with described thrust bearing shoe valve seat, described thrust disc extrudes the sensitive surface of described support induction pieces by thrust bearing shoe valve seat.The support induction pieces of direct inductiopn rotor axial thrust is set up in existing bearing housing, can directly monitor rotating shaft axial thrust real-time change, prevent from causing device thrust bearing shoe valve or thrust disc impaired because monitoring is delayed, also monitoring station ambient temperature is required relatively low, and device structure is simple, it is simple to transform on original structure.Axial thrust is transferred to support in the sensitive surface of induction pieces by thrust disc by thrust bearing shoe valve seat, it is achieved axial thrust data are monitored in real time.
As preferably, described thrust bearing shoe valve seat inner edge surface is provided with coupling and is nested with the interior scrobicular ring of described thrust disc outer rim, some thrust bearing shoe valves being evenly arranged it are embedded respectively on the two side of described interior scrobicular ring, the holding rotationally of described thrust disc, between corresponding thrust bearing shoe valve, is provided with oil lamella between described thrust disc sidewall and thrust bearing shoe valve.Thrust disc is embedded in described interior scrobicular ring rotationally, neither affects rotor and rotates, moreover it is possible to utilizes indent ring-side wall to transmit the axial thrust of rotor；Thrust bearing shoe valve had both played the effect bearing rotor axial thrust, also acted as the effect of limit thrust dish excessively axially displacement, it is ensured that rotor is in normal station all the time.Oil lamella can effectively reduce the frictional force between thrust bearing shoe valve and thrust disc, it is ensured that will not produce high temperature because thrust disc rotates when thrust disc is conflicted with thrust bearing shoe valve, and then thrust disc or thrust bearing shoe valve are caused damage.
As preferably, described bearing housing inwall is provided with the support seat carrying outer scrobicular ring, and described support induction pieces is embedded on the sidewall of described outer scrobicular ring, and described thrust bearing shoe valve seat outer rim is inserted described outer scrobicular ring and is connected with the conflict of described support induction pieces.The carrying out of thrust bearing shoe valve seat moves and is limited by outer scrobicular ring and thrust disc, make thrust bearing shoe valve seat can only do overall axially-movable, this allows for thrust bearing shoe valve seat can completely transmit the axial thrust from thrust disc, the induction pieces that supports on outer scrobicular ring sidewall transmits, by thrust bearing shoe valve seat, the axial thrust of coming for receiving, and obtains rotor axial thrust data with this.
As preferably, described support induction pieces is four, is separately positioned in two described support seats, and described support seat splits at the split of described bearing housing.Four support induction pieces and are divided into two groups, and often group includes splitting the support induction pieces in scrobicular ring two side walls outside, and two groups are symmetricly set on rotor both sides, are preferably placed at the split of bearing housing, it is simple to assembling maintenance.When rotor moves axially, often in group, at most only one of which support induction pieces is triggered.
As preferably, described support induction pieces includes the oil cylinder of a band opened type inner chamber, is located at the inner elastic oil sac of described inner chamber and is telescopically plugged on the piston body of described inner chamber outer end, and it is uncovered and form the sensitive surface conflicted with described thrust bearing shoe valve seat outer rim that described piston body outer end exposes to described oil cylinder.Supporting the rotor axial thrust that induction pieces is come by piston body thereon sensing external world's transmission, piston body changes pressure oil pressure in it by the elastic oil sac of extruding, and axial thrust is converted to hydraulic action by mechanicals efforts, it is simple to post-collection, monitoring.
As preferably, the inner chamber wall being positioned between described elastic oil sac and piston body is provided with boss, described piston body the inner periphery is provided with the interior shoulder mated with described boss, described uncovered inner edge is bolted with locating ring, described piston body outer end periphery is provided with the outer shoulder mated with described locating ring, described piston body the inner is crossed described boss and conflicts on the outer wall of elastic oil sac, and outer end is through described locating ring and exposes so that piston body can be in described raised line and location interannular telescopic moving.The inner of piston body and outer end are path section; middle part is big footpath section; the intersegmental interior shoulder in path Duan Yu great footpath and outer shoulder is utilized to realize piston body scope of activities is defined; both guaranteed piston body will not because depart from oil cylinder and cannot be spacing to elastic oil sac; also ensure that piston body will make elastic oil sac damaged because of the extruding of excessive inner chamber the inner; in addition; piston body is defined to the displacement that inner chamber is inner; by the thrust bearing shoe valve seat conflicted with it, thrust disc is carried out axial offset qualification, it is ensured that rotor excessively will not affect normal operation because of axial displacement.Locating ring is removably screwed onto uncovered inner edge, had both been easy to elastic oil sac and piston body is installed, moreover it is possible to regulation controls the stretching motion amplitude of piston body.
As preferably, described piston body is 0.1mm-0.3mm at described raised line and location interannular telescopic moving distance.The situation preventing rotor from affecting normal operation because of the most axial displacement by limiting the range of movement of piston body occurs, and when axial thrust is bigger, supporting seat can be to its axial limiting effect of rotor.
As preferably, it is inner that described elastic oil sac is full of described inner chamber, and described inner chamber the inner wall wears oil fuel tube, blast pipe and the detection pipe led to elastic oil sac respectively, and the described upper exposed junction of detection pipe is contacted a pressure transmitter.Pressure oil sends into elastic oil sac by oil fuel tube, air in elastic oil sac is by arranging outside blast pipe, pressure oil pressure in elastic oil sac is understood external forces and is changed, and pressure transmitter can change by the detection pressure oil pressure of perception constantly, and is outwards carried by signal.
A kind of method for monitoring rotary machine rotor axial thrust, including:
First, the axial thrust being subject to by rotor is transferred on thrust bearing shoe valve seat by thrust disc；
Afterwards, the axial thrust being subject to is transferred to support the sensitive surface of induction pieces by described thrust bearing shoe valve seat again, utilizes support induction pieces that active force is converted into into fluid pressure signal；
Finally, obtain fluid pressure signal by pressure transmitter detection and then calculate acquisition rotor axial thrust value.
As preferably, the axial thrust that described rotor is subject to is F, when calculating rotor axial thrust, is calculated by below equation: F=(P1+P2) * A, wherein P1, P2 are respectively to be located at the oil pressure pressure that the detection of rotor axial homonymy pressure transmitter obtains, and unit is megapascal (MPa)；A refers to the area of piston body inner face, and unit is square millimeter.
The prominent beneficial effect of the present invention: equivalent being converted into of the axial thrust produced in running by large rotating machinery rotor is prone to the fluid pressure signal measured, by measuring fluid pressure, the large rotating machinery axial thrust at running rotor can be calculated.Structurally, the support induction pieces of direct inductiopn rotor axial thrust is set up in bearing housing, can directly monitor rotating shaft axial thrust real-time change, prevent from causing device thrust bearing shoe valve or thrust disc impaired because monitoring is delayed, also monitoring station ambient temperature is required relatively low, and device structure is simple, it is simple to transform on original structure.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present invention；
Fig. 2 is for supporting induction pieces sectional structure schematic diagram；
Fig. 3 is that thrust bearing shoe valve is at indent ring-side wall distributed architecture schematic diagram；
In figure: 1, rotor, 2, bearing housing, 3, thrust disc, 4, thrust bearing, 5, sensitive surface, 6, interior scrobicular ring, 7, thrust bearing shoe valve, 8, outer scrobicular ring, 9, seat is supported, 10, oil cylinder, 11, elastic oil sac, 12, piston body, 13, boss, 14, interior shoulder, 15, outer shoulder, 16, locating ring, 17, oil fuel tube, 18, blast pipe, 19, detection pipe, 20, pressure transmitter.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the substantive distinguishing features of the present invention is further described.
A kind of device for monitoring rotary machine rotor axial thrust as shown in Figure 1, it is made up of rotor 1 and the bearing housing 2 that is nested with on described rotor 1, one ring-type thrust disc 3 is set on described rotor 1 outer wall, described thrust disc 3 is provided with the ring-type thrust bearing 4 axially linked with it, being provided with in described bearing housing 2 and mate the support induction pieces conflicted with described thrust bearing 4, described thrust disc 3 extrudes the sensitive surface 5 of described support induction pieces by thrust bearing 4.
Use a kind of method for monitoring rotary machine rotor 1 axial thrust that said structure is implemented, including:
First, the axial thrust being subject to by rotor 1 is transferred on thrust bearing 4 by thrust disc 3；
Afterwards, the axial thrust being subject to is transferred to support the sensitive surface 5 of induction pieces by described thrust bearing 4 again, utilizes support induction pieces that active force is converted into into fluid pressure signal；
Finally, obtain fluid pressure signal by pressure transmitter 20 detection and then calculate acquisition rotor 1 axial thrust value.
Can measure large rotating machinery rotor 1 axial thrust at running accurately by this method, system is simple, reliability is high in measurement.When the maximum that rotor 1 axial thrust measured value can bear more than thrust bearing, should tripping grinder immediately, prevent more serious device damage accident from occurring, effectively raise the security reliability of large rotating machinery.
The axial thrust of rotor 1 is the key parameter of large rotating machinery, is the omen of a lot of fault, such as: flow passage component structure failure, fouling etc..These faults or affect the economy of equipment or cause bigger device damage accident.Measure its numerical value accurately and can help raising equipment economy and trouble-saving generation.
Described support induction pieces is four, is separately positioned in two described support seats 9, and described support seat 9 splits at the split of described bearing housing 2.It it is two groups owing to supporting induction pieces, when rotor 1 moves to axial either side, two support induction pieces simultaneously and can only be triggered in capital, the fluid pressure signal that pressure transmitter 20 detection supported on induction pieces that is triggered by the two is obtained is P1 and P2, the axial thrust that described rotor 1 is subject to is F, the conversion formula between rotor 1 axial thrust and fluid pressure: F=(P1+P2 is obtained with this) * A, wherein P1, P2 are respectively to be located at the oil pressure pressure that the detection of rotor 1 axial homonymy pressure transmitter 20 obtains, and unit is megapascal (MPa)；A refers to the area of piston body 12 inner face, and unit is square millimeter.
In practical operation, quantity and the distributing position of described support induction pieces can be adjusted according to actual conditions, such as increase to three groups of totally six support induction pieces, now, when rotor 1 moves to axial either side, three support induction pieces simultaneously and can only be triggered in capital, and collect three fluid pressures signal P1, P2, P3, then formula becomes: F=(P1+P2+P3) * A, by that analogy, formula is adjusted according to actual device structure, is regarded as the specific embodiment of the present invention.
In practical operation, described thrust bearing 4 inner edge surface is provided with coupling and is nested with the interior scrobicular ring 6 of described thrust disc 3 outer rim, some thrust bearing shoe valves 7 being evenly arranged it are embedded respectively on the two side of described interior scrobicular ring 6, described thrust disc 3 holding rotationally, between corresponding thrust bearing shoe valve 7, is provided with oil lamella between described thrust disc 3 sidewall and thrust bearing shoe valve 7.Thrust disc 3 is structure as a whole with rotor 1, and rotates together with rotor 1, it is ensured that the axial thrust of rotor 1 can completely be transferred on thrust disc 3, and thrust disc 3 is coordinated with supporting seat 9 by thrust bearing 4, and rotor 1 is played axial limiting effect.Described thrust disc 3 is ring-type, and is located on the periphery of rotor 1 lateral wall, and described thrust disc 3 both sides ring wall surface is the sagittal plane vertical with rotor 1 axis with the two side walls of interior scrobicular ring 6, it is ensured that thrust disc 3 and the transmission of thrust bearing 4 intermolecular forces are smooth and easy.
In practical operation, described thrust bearing shoe valve 7 is in flat sector structure (as shown in Figure 3), thrust bearing shoe valve 7 is equidistant around being embedded in the two side walls of interior scrobicular ring 6, the sidewall of interior scrobicular ring 6 is provided with the caulking groove mated with thrust bearing shoe valve 7, thrust bearing shoe valve 7 is used for undertaking axial thrust and guaranteeing slip smooth with thrust disc 3, the quantity of described thrust bearing shoe valve 7 and position can carry out increasing and decreasing and adjusting according to actual conditions, are regarded as the specific embodiment of the present invention.
In practical operation, described bearing housing 2 inwall is provided with the support seat 9 carrying outer scrobicular ring 8, and described support induction pieces is embedded on the sidewall of described outer scrobicular ring 8, and described thrust bearing 4 outer rim is inserted described outer scrobicular ring 8 and is connected with the conflict of described support induction pieces.Outer scrobicular ring 8 is provided with support induction pieces, the sensitive surface 5 supporting induction pieces is mated with thrust bearing 4 peripheral side wall, and both of which and the axially vertical setting of rotor 1, make thrust bearing 4 to be completely transferred to axial thrust support on induction pieces, it is ensured that both will not because of when conflicting active force excessive and the situation of oblique deviation occurs.
In practical operation, described support induction pieces includes the oil cylinder 10 of a band opened type inner chamber, is located at the inner elastic oil sac 11 of described inner chamber and is telescopically plugged on the piston body 12 of described inner chamber outer end, and it is uncovered and form the sensitive surface 5 conflicted with described thrust bearing 4 outer rim that described piston body 12 outer end exposes to described oil cylinder 10.It is inner that described elastic oil sac 11 is full of described inner chamber, and described inner chamber the inner wall wears oil fuel tube 17, blast pipe 18 and the detection pipe 19 led to elastic oil sac 11 respectively, and on described detection pipe 19, exposed junction contacts a pressure transmitter 20(as shown in Figure 2).The outer end of described piston body exposes to uncovered so that can conflict with thrust bearing peripheral side wall smoothly in piston body outer face.
When mounted, realized by following steps:
1.
By elastic oil sac 11 the inner by uncovered loading inner chamber, and oil fuel tube 17, blast pipe 18 and detection pipe 19 are led to elastic oil sac 11 after oil cylinder 10 wall；
2.
By piston body 12 by uncovered insertion inner chamber outer end；
3.
Locating ring 16 is screwed onto at uncovered inner edge, moves axially value for piston body 12 reserved the default of 0.1mm-0.3mm between described boss and locating ring 16.
4.
By oil fuel tube 17 to elastic oil sac 11 injection pressure oil, the air in elastic oil sac 11 is by the outer row of blast pipe 18 so that pressure oil is full of elastic oil sac 11.
Realize supporting induction pieces by above-mentioned steps to assemble.
In practical operation, the height of oil cylinder 10 is generally 2-3cm.For preventing the pressure oil in oil cylinder 10 excessive, pressure oil should be full of elastic oil sac 11, and elastic oil sac 11 type is determined by pressure oil grade and type.The pressure oil injected is generally toughness; the fluid that bulk modulus is bigger; because the liquid that bulk modulus is bigger is difficult to be compressed; both the range supporting induction pieces it had been effectively increased; interior shoulder 14 will not be because conflicting and loss of pressure transmitter 20 accurate data degree with boss 13 when bearing compared with noticeable effort to guarantee piston body 12, moreover it is possible to stablizing of the axial location of guarantee thrust bearing 4.
In practical operation, the Material Strength of elastic oil sac 11 is determined by the pressure rating of pressure oil, in the case of meeting requirement of strength, the material of elastic oil sac 11 preferably uses the material that coefficient of elasticity is less, when making elastic oil sac 11 be full of inner chamber the inner, its elasticity tension is less, and external and internal pressure difference also can be less, can ensure that the axial thrust signal can completely of thrust bearing shoe valve 7 is converted into the pressure signal of pressure oil, be effectively improved the certainty of measurement of the present invention.
In practical operation, being limited by oil cylinder 10 inner chamber wall, the shape of elastic oil sac 11 is basically unchanged, and its elasticity tension is also a steady state value, and concrete numerical value can be determined by test.
In practical operation, the inner chamber wall being positioned between described elastic oil sac 11 and piston body 12 is provided with boss 13, the inner periphery of described piston body 12 is provided with the interior shoulder 14 mated with described boss 13, described uncovered inner edge is bolted with locating ring 16, described piston body 12 outer end periphery is provided with the outer shoulder 15 mated with described locating ring 16, described piston body 12 the inner is crossed described boss 13 and conflicts on the outer wall of elastic oil sac 11, outer end is through described locating ring 16 and exposes so that piston body 12 can telescopic moving between described boss and locating ring 16.After the pressure oil generation in oil cylinder 10 is excessive, this interior shoulder 14 coordinates the axial thrust undertaking thrust bearing 4 with boss 13, make thrust bearing shoe valve 7 do not have exceed preset move axially value, effectively prevent owing to pressure oil is excessive, cause large rotating machinery rotor 1 to move axially displacement excessive, ensure that thrust bearing shoe valve 7 normally works, and effectively improve this type thrust bearing 4 and support the reliability of pattern.The described default value that moves axially, for 0.1mm-0.3mm, preferably 0.2mm, can adjust by rotating locating ring 16 according to actual conditions, be regarded as the specific embodiment of the present invention.
Claims (10)
1. the device being used for monitoring rotary machine rotor axial thrust, including rotor (1) and the bearing housing (2) that is nested with on described rotor (1), it is characterized in that, one ring-type thrust disc (3) is set on described rotor (1) outer wall, described thrust disc (3) is provided with the ring-type thrust bearing (4) axially linked with it, being provided with in described bearing housing (2) and mate the support induction pieces conflicted with described thrust bearing (4), described thrust disc (3) extrudes the sensitive surface (5) of described support induction pieces by thrust bearing (4).
A kind of device for monitoring rotary machine rotor axial thrust the most according to claim 1, it is characterized in that, described thrust bearing (4) inner edge surface is provided with coupling and is nested with the interior scrobicular ring (6) of described thrust disc (3) outer rim, some thrust bearing shoe valves (7) being evenly arranged it are embedded respectively on the two side of described interior scrobicular ring (6), described thrust disc (3) holding rotationally, between corresponding thrust bearing shoe valve (7), is provided with oil lamella between described thrust disc (3) sidewall and thrust bearing shoe valve (7).
A kind of device for monitoring rotary machine rotor axial thrust the most according to claim 2, it is characterized in that, described bearing housing (2) inwall is provided with the support seat (9) carrying outer scrobicular ring (8), described support induction pieces is embedded on the sidewall of described outer scrobicular ring (8), and described thrust bearing (4) outer rim is inserted described outer scrobicular ring (8) and is connected with the conflict of described support induction pieces.
A kind of device for monitoring rotary machine rotor axial thrust the most according to claim 3, it is characterized in that, described support induction pieces is four, is separately positioned in two described support seats (9), and described support seat (9) splits at the split of described bearing housing (2).
A kind of device for monitoring rotary machine rotor axial thrust the most according to claim 3, it is characterized in that, described support induction pieces includes the oil cylinder (10) of a band opened type inner chamber, is located at the inner elastic oil sac (11) of described inner chamber and is telescopically plugged on the piston body (12) of described inner chamber outer end, and it is uncovered and form the sensitive surface (5) conflicted with described thrust bearing (4) outer rim that described piston body (12) outer end exposes to described oil cylinder (10).
A kind of device for monitoring rotary machine rotor axial thrust the most according to claim 5, it is characterized in that, the inner chamber wall being positioned between described elastic oil sac (11) and piston body (12) is provided with boss (13), the inner periphery of described piston body (12) is provided with the interior shoulder (14) mated with described boss (13), described uncovered inner edge is bolted with locating ring (16), described piston body (12) outer end periphery is provided with the outer shoulder (15) mated with described locating ring (16), described piston body (12) the inner is crossed described boss (13) and conflicts on the outer wall of elastic oil sac (11), outer end is through described locating ring (16) and exposes, make the piston body (12) can telescopic moving between described boss and locating ring (16).
A kind of device for monitoring rotary machine rotor axial thrust the most according to claim 6, it is characterised in that described piston body (12) telescopic moving distance between described boss and locating ring (16) is 0.1mm-0.3mm.
A kind of device for monitoring rotary machine rotor axial thrust the most according to claim 6, it is characterized in that, it is inner that described elastic oil sac (11) is full of described inner chamber, wearing oil fuel tube (17), blast pipe (18) and detection pipe (19) led to elastic oil sac (11) respectively on the wall of described inner chamber the inner, the upper exposed junction of described detection pipe (19) is contacted a pressure transmitter (20).
9. the method being used for monitoring rotary machine rotor axial thrust, it is characterized in that, first, the axial thrust being subject to by rotor (1) is transferred on thrust bearing (4) by thrust disc (3), afterwards, the axial thrust being subject to is transferred to support the sensitive surface (5) of induction pieces by described thrust bearing (4) again, utilize support induction pieces that active force is converted into into fluid pressure signal, finally, obtain fluid pressure signal by pressure transmitter (20) detection and then calculate acquisition rotor (1) axial thrust value.
A kind of method for monitoring rotary machine rotor axial thrust the most according to claim 9, it is characterized in that, the axial thrust that described rotor (1) is subject to is F, F=(P1+P2) * A, wherein P1, P2 are respectively to be located at rotor (1) the oil pressure pressure that axially homonymy pressure transmitter (20) detection obtains, and unit is megapascal (MPa)；A refers to the area of piston body (12) inner face, and unit is square millimeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610472411.XA CN105910745A (en) | 2016-06-22 | 2016-06-22 | Device and method of monitoring axial thrust of rotating machinery rotor |
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| CN201610472411.XA CN105910745A (en) | 2016-06-22 | 2016-06-22 | Device and method of monitoring axial thrust of rotating machinery rotor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202663A (en) * | 2017-06-07 | 2017-09-26 | 中国航发湖南动力机械研究所 | rotor axial force measuring device and measuring method |
| CN109238543A (en) * | 2018-08-01 | 2019-01-18 | 沈阳工业大学 | Centrifugal compressor axial thrust-measuring device and measurement method |
| CN110793696A (en) * | 2019-12-10 | 2020-02-14 | 湖南崇德工业科技有限公司 | Axial load measuring device and method for rotating equipment |
| CN112903168A (en) * | 2021-01-25 | 2021-06-04 | 杭州汽轮机股份有限公司 | Method for rapidly monitoring axial thrust of steam turbine |
| CN113720511A (en) * | 2021-08-31 | 2021-11-30 | 浙江清华柔性电子技术研究院 | Shafting cooperation monitoring device |
| CN114678732A (en) * | 2022-03-10 | 2022-06-28 | 贵州乌江水电开发有限责任公司 | Intelligent elastic metal plastic thrust tile on-line monitoring system and device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202663A (en) * | 2017-06-07 | 2017-09-26 | 中国航发湖南动力机械研究所 | rotor axial force measuring device and measuring method |
| CN107202663B (en) * | 2017-06-07 | 2019-11-12 | 中国航发湖南动力机械研究所 | Rotor axial force measuring device and measurement method |
| CN109238543A (en) * | 2018-08-01 | 2019-01-18 | 沈阳工业大学 | Centrifugal compressor axial thrust-measuring device and measurement method |
| CN110793696A (en) * | 2019-12-10 | 2020-02-14 | 湖南崇德工业科技有限公司 | Axial load measuring device and method for rotating equipment |
| CN112903168A (en) * | 2021-01-25 | 2021-06-04 | 杭州汽轮机股份有限公司 | Method for rapidly monitoring axial thrust of steam turbine |
| CN112903168B (en) * | 2021-01-25 | 2022-07-22 | 杭州汽轮机股份有限公司 | A fast monitoring method for axial thrust of steam turbine |
| CN113720511A (en) * | 2021-08-31 | 2021-11-30 | 浙江清华柔性电子技术研究院 | Shafting cooperation monitoring device |
| CN113720511B (en) * | 2021-08-31 | 2023-10-20 | 浙江清华柔性电子技术研究院 | Shafting cooperation monitoring device |
| CN114678732A (en) * | 2022-03-10 | 2022-06-28 | 贵州乌江水电开发有限责任公司 | Intelligent elastic metal plastic thrust tile on-line monitoring system and device |
| CN114678732B (en) * | 2022-03-10 | 2023-12-01 | 贵州乌江水电开发有限责任公司 | Intelligent elastic metal plastic thrust tile on-line monitoring system |
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