CN110608848A - Device and method for testing whole dynamic seal machine of propeller hub of adjustable propeller - Google Patents
Device and method for testing whole dynamic seal machine of propeller hub of adjustable propeller Download PDFInfo
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- CN110608848A CN110608848A CN201910942857.8A CN201910942857A CN110608848A CN 110608848 A CN110608848 A CN 110608848A CN 201910942857 A CN201910942857 A CN 201910942857A CN 110608848 A CN110608848 A CN 110608848A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
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Abstract
The invention belongs to the technical field of propeller tests, and particularly discloses a complete machine test device and a complete machine test method for dynamic seal of an adjustable propeller hub. The device includes frock paddle flange subassembly, measuring component and with the hydraulic system of propeller hub UNICOM, frock paddle flange subassembly includes frock paddle flange, paddle sealing washer and crank pin dish, and hydraulic system includes the oil hydraulic cylinder, and this oil hydraulic cylinder one end is passed through tribit five-way electromagnetic directional valve and postbox UNICOM, the other end with crank pin dish, frock paddle flange and paddle sealing washer UNICOM, measuring component including adsorb in on the frock paddle flange and press in at least one percentage table on the external circumference of propeller hub. The experimental method comprises the steps of measuring and adjusting the assembling clearance of the hub and testing the dynamic tightness of the hub. According to the complete machine testing device, the actual gap of the hub joint surface is adjusted through the customized tool blade flange and the crank pin disc, and the sealing performance of the hub joint surface under the gap is tested through a pump pressure experiment.
Description
Technical Field
The invention belongs to the technical field of propeller tests, and particularly relates to a device and a method for testing a whole dynamic seal machine of an adjustable propeller hub.
Background
The adjustable pitch propeller is called adjustable propeller (CPP) for short, and is a key component for keeping high precision and running stability of a ship propeller and an offshore positioning platform. The adjustable propeller distance adjusting mechanism consists of a propeller hub mechanism, a propeller blade, a crank pin disc, a sliding block, a piston rod and the like, and the plus linear motion of the piston rod is converted into the rotation of the crank pin disc under the action of hydraulic drive, so that the propeller blade is driven to swing back and forth on the propeller hub, the pitch of the propeller blade is adjusted, the forward and reverse control of the adjustable propeller blade is realized, the thrust and the torque of the ship propeller are changed, and the requirements of forward movement, backward movement, stopping, speed change and the like of a naval vessel are met.
The movable sealing part of the adjustable propeller hub bears the complex alternating load action of seawater, once leakage failure occurs, the whole machine is shut down and returned to a factory for maintenance, the maintenance cost and the loss caused by shutdown are huge, and therefore, the movable sealing part of the propeller hub is very necessary to test before delivery and pilot shipment. In the prior art and related tests, performance tests of the dynamic seal of the adjustable propeller hub are carried out by a single part and cannot be carried out on an assembled complete machine platform, the gap between the sealing end faces of the propeller hub cannot be adjusted along with the tests, and the dynamic seal performance tested by the tests cannot meet actual design and use requirements.
Therefore, the present invention provides a complete machine testing apparatus and method for dynamic sealing of an adjustable propeller hub, so as to solve the problems that the prior art cannot be performed on an assembled complete machine platform, and the gap between the sealing end faces of the propeller hub cannot be adjusted along with the test.
Disclosure of Invention
Aiming at the defects or the improvement requirements in the prior art, the invention provides a device and a method for testing the whole dynamic seal machine of an adjustable propeller hub.
In order to achieve the above object, according to one aspect of the present invention, a complete machine testing apparatus for dynamic sealing of an adjustable propeller hub is provided, which includes a tool blade flange assembly, a hydraulic system and a measuring assembly; wherein the content of the first and second substances,
the tooling blade flange assembly comprises a tooling blade flange, a blade sealing ring and a crank pin disc, the tooling blade flange and the crank pin disc are respectively sleeved on the outer circumference of the hub body, the end part of the tooling blade flange is aligned with the crank pin disc, and sealing is realized through the blade sealing ring;
the hydraulic system comprises an oil hydraulic cylinder, one end of the oil hydraulic cylinder is communicated with the mailbox through a three-position five-way electromagnetic reversing valve, and the other end of the oil hydraulic cylinder is communicated with the crank pin disc, the tooling blade flange and the blade sealing ring to form a hydraulic system loop;
the measuring assembly comprises at least one dial indicator which is adsorbed on the tooling blade flange and pressed on the outer circumference of the hub body, and the distance between the tooling blade flange and the hub body is read through the dial indicator.
Further, frock paddle flange subassembly includes at least one clearance adjustment gasket, and this clearance adjustment gasket is located between frock paddle flange and the crank pin dish.
Furthermore, the gap adjusting gaskets are different in thickness, and one or more of the gap adjusting gaskets are flexibly replaced according to test requirements to realize different gap adjustments.
Further, the tooling blade flange assembly comprises a first tooling cushion block and a second tooling cushion block, wherein the first tooling cushion block is arranged at the bottom of the hub body, and the second tooling cushion block is arranged at the bottom of the hydraulic system.
Further, the measuring assembly comprises a hoist connected with the tooling paddle flange and a thrust gauge connected with the hoist.
Further, the hydraulic system comprises an oil distribution ring A port and an oil distribution ring B port which are connected with the oil hydraulic cylinder;
the port A of the oil distribution ring is communicated with the mailbox through a three-position five-way electromagnetic reversing valve;
and the port B of the oil distribution ring is communicated with the oil tank through a three-position five-way electromagnetic reversing valve and a hydraulic pump station.
Furthermore, a bypass pipeline is arranged on a pipeline system of the oil distribution ring B port, the three-position five-way electromagnetic directional valve and the hydraulic pump station communicated with the oil tank, and an overflow valve is arranged on the bypass pipeline.
Furthermore, the oil hydraulic cylinder also comprises a supporting seat arranged on the cylinder body in sequence, an oil injection pipe connected with the supporting seat, an oil display pipe cover arranged at one end of the supporting seat, and a gland arranged at one end of the hydraulic cylinder.
According to another aspect of the invention, the test method for the whole dynamic seal machine of the adjustable propeller hub is realized by applying the test device and comprises a propeller hub assembly gap measurement and adjustment test and a propeller hub dynamic tightness test, wherein the propeller hub assembly gap measurement and adjustment test comprises the following steps:
s100: installing a tool paddle flange, locking a paddle bolt, applying a pre-tightening torque, and knocking the tool paddle flange by a red copper bar to enable the tool paddle flange to move downwards and be parallel to the end face of the crank pin disc;
s200: uniformly adsorbing a plurality of dial indicators on symmetrical positions of a tooling blade flange, pressing the dial indicators on the periphery of a hub body, setting the readings of the dial indicators to be zero, hoisting the tooling blade flange by using a hoist, recording the value of the dial indicator when the readings of the thrust indicator and the dial indicators are not changed, taking the average value of the readings of the dial indicators, measuring for many times, and taking the average value to obtain the assembly clearance value of the hub;
s300: the gap adjusting gaskets with different thicknesses are replaced, and the assembling gap of the propeller hub is indirectly changed, so that the compression ratio of the blade sealing ring is changed.
Further, the hub dynamic tightness test comprises the following steps:
s400: cleaning the parts to be tested, performing collision interference check, and checking whether a hydraulic system can be established; opening a screw plug on the propeller hub body, discharging hydraulic oil, and disassembling a flow guide pipe; horizontally placing the gear box, and raising the gear box by using a tool cushion block and a tool cushion block; removing four blades, checking whether blade sealing rings are intact, if the blade sealing rings are damaged, replacing the blade sealing rings, coating lubricating grease, replacing one blade by a tool blade flange, replacing the blade sealing ring at the position, coating the lubricating grease, and installing an oil display pipe cover, an oil injection pipe, a supporting seat, a gland, a hose and a joint;
s500: connecting a pressure gauge to a propeller hub body lubricating cavity, gradually increasing the oil pressure of the propeller hub body, slowly changing the distance between a full forward vehicle and a full reverse vehicle, recording the lowest starting pressure, starting a hydraulic pump station, and injecting oil from an oil tank to an oil distribution ring A port and an oil distribution ring B port; increasing the pressure to MPa;
s600: adjusting the pitch of the blades from full forward turning to full reverse turning, then from full reverse turning to full forward turning, and recording the distance adjusting time and the oil pressure in the distance adjusting process; checking whether the variable pitch is normal, whether oil leaks at the blade sealing ring and each hose joint, and whether the pressure of a hydraulic pump station is normal;
s700: and injecting hydraulic oil into the gear box through the oil injection pipe, pressurizing by using a manual pump from an oil port on the oil pipe cover, keeping the pressure of the low-pressure part of the propeller hub at the pressure of MPa, stabilizing the pressure for a period of time, and detaching a blade flange of the tool if the joints of the gear box and the tool do not leak, replacing clearance adjusting gaskets with different thicknesses, and performing the next test.
Generally, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
1. according to the complete machine testing device, the gasket with different thicknesses is mounted at the joint part of the customized tooling blade flange and the crank pin disc to adjust the size of the gap between the blade flange and the crank pin disc, so that the actual gap of the hub joint surface is obtained, then the sealing performance of the hub joint surface under the gap is tested through a pump pressure experiment, and the dynamic sealing performance and the distance adjusting sensitivity of the hub joint surface corresponding to different gaps in the distance adjusting state can be further tested.
2. According to the complete machine testing device, the tooling paddle flange assembly comprises at least one clearance adjusting gasket, the clearance adjusting gasket is arranged between the tooling paddle flange and the crank pin disc, the thicknesses of the clearance adjusting gaskets are different, and one or more of the clearance adjusting gaskets are flexibly replaced according to testing requirements to realize different clearance adjustments.
3. According to the complete machine testing device, the port A of the oil distribution ring is communicated with the mailbox through the three-position five-way electromagnetic reversing valve, the port B of the oil distribution ring is communicated with the oil tank through the three-position five-way electromagnetic reversing valve and the hydraulic pump station to form a hydraulic system loop, on one hand, linear motion is converted into rotation of the crank pin disc through the action of the hydraulic system, the blades are driven to move on the propeller hub to realize adjustment of the pitch, and on the other hand, the propeller hub moving sealing performance test is realized.
4. According to the complete machine test method, linear motion is converted into rotation of the crank pin disc through the action of the hydraulic system, the blades are driven to move on the propeller hub to achieve adjustment of the pitch, the assembly clearance of the propeller hub is measured through the dial indicator, meanwhile, the hydraulic system applies pressure and maintains for a period of time, and the dynamic sealing performance test of the propeller hub system is completed.
Drawings
FIG. 1 is a schematic structural diagram of a complete machine testing device for dynamic sealing of an adjustable propeller hub provided in an embodiment of the invention;
FIG. 2 is a schematic view of the gap adjusting apparatus shown in FIG. 1;
fig. 3 is a schematic structural view of the tooling blade flange in fig. 2, wherein (a) in fig. 3 is a side view of the tooling blade flange, and (b) in fig. 3 is a front view of the tooling blade flange;
FIG. 4 is a schematic view of the gap adjusting shim of FIG. 2;
FIG. 5 is a schematic structural diagram of an oil pressure system in a dynamic seal complete machine testing device for an adjustable propeller hub provided in an embodiment of the invention;
FIG. 6 is a schematic structural view of the filler pipe shown in FIG. 5;
fig. 7 is a schematic structural view of the support seat in fig. 5, wherein (a) in fig. 7 is a side view of the support seat, and (b) in fig. 7 is a top view of the support seat;
fig. 8 is a schematic structural view of the gland of fig. 5, in which (a) of fig. 8 is a side view of the gland and (b) of fig. 8 is a plan view of the gland.
In all the drawings, the same reference numerals denote the same structural elements, wherein 1-a thrust gauge, 2-a hoist, 3-a tooling blade flange, 4-a clearance adjusting gasket, 5-a blade sealing ring, 6-a crank pin disc, 7-a hub body, 8-an oil hydraulic cylinder, 9-an oil distribution ring A port, 10-an oil distribution ring B port, 11-a three-position five-way electromagnetic reversing valve, 12-an overflow valve, 13-a hydraulic pump station, 14-an oil tank, 15-a first tooling cushion block, 16-a second tooling cushion block, 801-an oil pipe cover, 802-an oil injection pipe, 803-a supporting seat and 804-a pressing cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 8, an embodiment of the invention provides a complete machine testing device for dynamic sealing of an adjustable propeller hub with an adjustable end surface gap, which comprises a tool blade flange assembly, a hydraulic system and a measuring assembly; the tooling paddle flange assembly comprises a tooling paddle flange 3, a paddle sealing ring 5 and a crank pin disc 6, wherein the tooling paddle flange 3 and the crank pin disc 6 are respectively sleeved on the outer circumference of a paddle hub body 7, the end part of the tooling paddle flange 4 is aligned with the crank pin disc 6, and sealing is realized through the paddle sealing ring 5; the hydraulic system comprises an oil hydraulic cylinder 8, one end of the oil hydraulic cylinder 8 is communicated with a mailbox 14 through a three-position five-way electromagnetic reversing valve 11, and the other end of the oil hydraulic cylinder is communicated with the crank pin disc 6, the tooling blade flange 3 and the blade sealing ring 5 to form a hydraulic system loop; the measuring assembly comprises at least one dial indicator which is adsorbed on the tooling blade flange 3 and pressed on the outer circumference of the hub body 7, and the distance between the tooling blade flange 3 and the hub body 7 is read through the dial indicator. The gasket with different thicknesses is arranged at the joint part of the customized tooling blade flange and the crank pin disc to adjust the size of the gap between the blade flange and the crank pin disc, so that the actual gap of the hub joint surface is obtained, then the sealing performance of the hub joint surface under the gap is tested through a pump pressure experiment, and the dynamic sealing performance of the hub joint surface and the sensitivity of distance adjustment in different gaps can be further tested in the distance adjustment state.
In a preferred embodiment of the invention, as shown in fig. 2, the tooling blade flange assembly comprises at least one clearance adjusting shim 4, the clearance adjusting shim 4 being provided between the tooling blade flange 3 and the crankpin disc 6. As shown in fig. 4, the gap adjusting shims 4 have different thicknesses, and one or more of the shims are flexibly replaced according to test requirements to achieve different gap adjustments.
As shown in fig. 1, the tooling blade flange assembly includes a first tooling cushion block 15 and a second tooling cushion block 16, wherein the first tooling cushion block 15 is disposed at the bottom of the hub body 7, and the second tooling cushion block 16 is disposed at the bottom of the hydraulic system. The measuring assembly comprises a hoist 2 connected with the tooling paddle flange 3 and a thrust gauge 1 connected with the hoist 2.
Further, the hydraulic system comprises an oil distribution ring A port 9 connected with the oil hydraulic cylinder 8, and the oil distribution ring A port 9 is communicated with a mailbox 14 through a three-position five-way electromagnetic directional valve 11.
The hydraulic system comprises an oil distribution ring B port 10 connected with the oil hydraulic cylinder 8, and the oil distribution ring B port 10 is communicated with an oil tank 14 through a three-position five-way electromagnetic directional valve 11 and a hydraulic pump station 13.
And a bypass pipeline is arranged on a pipeline system communicated with the oil distribution ring B port 10, the three-position five-way electromagnetic directional valve 11, the hydraulic pump station 13 and the oil tank 14, and an overflow valve 12 is arranged on the bypass pipeline.
As shown in fig. 5 to 8, the hydraulic cylinder 8 further includes a support base 803, an oil filling pipe 802 connected to the support base 803, and an oil filling pipe cover 801 provided at one end of the support base 803 in this order. A gland 804 is also provided at one end of the cylinder 8.
The invention further provides a test method for the whole dynamic seal machine of the hub of the adjustable propeller, which comprises a hub assembly clearance measurement and adjustment test and a hub dynamic tightness test, wherein the hub assembly clearance measurement and adjustment test comprises the following steps:
firstly, mounting a tooling blade flange 3, locking a blade bolt, applying a pre-tightening torque of 3600N.m, knocking the tooling blade flange 3 by a red copper bar, and enabling the tooling blade flange 3 to run downwards to be parallel to the end face of a crank pin disc 6; and then uniformly adsorbing a plurality of dial indicators on the symmetrical positions of the tooling blade flange 3 and pressing the periphery of the hub body 7, setting the reading of the dial indicator to zero, hoisting the tooling blade flange 3 by using a hoist 2, displaying the corresponding pulling force of the hoist on the thrust gauge 1, recording the value of the dial indicator when the readings of the thrust gauge 1 and the dial indicator are not changed any more, taking the average value of the readings of the dial indicators, and taking the average value after measuring for many times to obtain the hub assembly clearance value d.
Specifically, firstly, a tooling blade flange 3 is installed, a blade bolt is locked, a pre-tightening torque of 3600N.m is applied, and a red copper bar is used for knocking the tooling blade flange 3, so that the tooling blade flange 3 runs downwards and is parallel to the end face of a crank pin disc 6; and then uniformly adsorbing a plurality of dial indicators on the symmetrical positions of the tooling blade flange 3 and pressing the periphery of the hub body 7, setting the reading of the dial indicator to zero, hoisting the tooling blade flange 3 by using a hoist 2, displaying the corresponding pulling force of the hoist on the thrust gauge 1, recording the value of the dial indicator when the readings of the thrust gauge 1 and the dial indicator are not changed any more, taking the average value of the readings of the dial indicators, and taking the average value after measuring for many times to obtain the hub assembly clearance value d. Because the upper surface of the crank pin disc 6 is in close contact with the lower surface of the propeller hub body 7, a plurality of groups of clearance adjusting gaskets 4 are prepared in advance by grinding according to the compression rate of the propeller blade sealing ring 5, after the clearance adjusting gaskets 4 are replaced, the thickness of the clearance adjusting gaskets 4 is different, so that the clearance between the lower surface of the tooling propeller blade flange 3 and the upper surface of the propeller hub body 7 is changed, the assembling clearance of the propeller hub is indirectly changed, the compression rate of the propeller blade sealing ring 5 is changed, and the experimental purpose is achieved.
In addition, the hub assembly clearance adjusting method comprises the following steps:
because the upper surface of the crank pin disc 6 is in close contact with the lower surface of the propeller hub body 7, a plurality of groups of clearance adjusting gaskets 4 are prepared in advance by grinding according to the compression ratio of the blade sealing ring 5, after the clearance adjusting gaskets 4 are replaced, the thickness of the clearance adjusting gaskets 4 is different, the clearance between the lower surface of the tooling blade flange 3 and the upper surface of the propeller hub body 7 can be changed, the assembling clearance of the propeller hub is indirectly changed, the compression ratio of the blade sealing ring 5 is changed, and the experimental purpose is achieved.
Under the condition that the clearance is adjustable, the working principle of the whole dynamic seal testing device for the propeller hub is as follows:
firstly, cleaning a part to be tested, carrying out collision interference check, and checking whether a hydraulic system can be established; opening a screw plug on the propeller hub body 7, discharging hydraulic oil, and disassembling the flow guide pipe; horizontally placing the gear box horizontally, and raising the gear box by using a tool cushion block 15 and a tool cushion block 16; removing four blades, checking whether the blade sealing rings 5 are intact, if the blade sealing rings 5 are damaged, replacing the blade sealing rings 5, coating lubricating grease, replacing one blade with a tooling blade flange 3, replacing the blade sealing ring 5 at the position, and coating the lubricating grease; installing a tooling blade flange 3, locking a blade bolt, applying a moment of 3600N.m, and knocking the tooling blade flange 3 by a red copper bar to enable the tooling blade flange 3 to move downwards to be parallel to the end face of the flange; adsorbing the dial indicator on the surface of the tooling blade flange 3, pressing the dial indicator at the periphery of the hub body 7, pulling the tooling blade flange 3 upwards by using the hoist 2, and measuring the pulling force and the corresponding upward displacement; the oil pipe cover 801, the oil filling pipe 802, the supporting seat 803, the pressing cover 804, the hose and the joint are installed, and the operation experiment can be started after the operation experiment is completed.
In the low-pressure part in the propeller hub body 7, an electromagnetic valve 11 is arranged in the middle of a piston rod; when the pressure of the propeller hub body 7 rises, the electromagnetic valve 11 is opened; the function of the solenoid valve 11 was checked as follows: connecting a pressure meter to a lubrication cavity of the hub body 7, and gradually increasing the oil pressure of the hub body 7; the pressure of the opening of the electromagnetic valve 11 can be seen on the pressure gauge; when the electromagnetic valve 11 is opened, the flow rate increase can be seen in the inner hole of the shaft, and the lowest starting pressure is recorded; slowly changing the distance between the full-forward vehicle and the full-reverse vehicle, and recording the lowest starting pressure; restoring the hydraulic pump station 13 and a connecting pipeline, connecting a cable to a power supply, starting the hydraulic pump station 13, and injecting oil from an oil tank 14 to an oil distribution ring A port 9 and an oil distribution ring B port 10; increasing the pressure to 2MPa, respectively using one pump and two pumps 13 to work, adjusting the pitch of the blade from full forward turning to full reverse turning, then from full reverse turning to full forward turning, and recording the distance adjusting time and the oil pressure in the distance adjusting process; whether the variable pitch is normal or not is checked (the pitch adjusting time is about 20s and is considered to meet the sensitive requirement of pitch adjustment), the blade sealing ring 5 and each hose joint are oil-tight, and the pressure of a hydraulic pump station is normal or not; installing a peeping cover and a gap adjusting gasket 4, and injecting hydraulic oil into the gear box through an oil injection pipe 802; pressurizing by using a manual pump from an oil port on the oil pipe cover 801, maintaining the pressure when the pressure of a low-pressure part of a propeller hub reaches 0.1MPa for 5 hours, and preventing leakage at all joints of the gear box and the tool; and (3) detaching the blade flange 3 of the tool, replacing the processed gap adjusting gasket 4, and carrying out the experiment again.
Specifically, firstly, cleaning a part to be tested, carrying out collision interference check, and checking whether a hydraulic system can be established; opening a screw plug on the propeller hub body 7, discharging hydraulic oil, and disassembling the flow guide pipe; horizontally placing the gear box horizontally, and raising the gear box by using a tool cushion block 15 and a tool cushion block 16; removing four blades, checking whether the blade sealing rings 5 are intact, if the blade sealing rings 5 are damaged, replacing the blade sealing rings 5, coating lubricating grease, replacing one blade with a tooling blade flange 3, replacing the blade sealing ring 5 at the position, and coating the lubricating grease; installing a tooling blade flange 3, locking a blade bolt, applying a moment of 3600N.m, and knocking the tooling blade flange 3 by a red copper bar to enable the tooling blade flange 3 to move downwards to be parallel to the end face of the flange; adsorbing the dial indicator on the surface of the tooling blade flange 3, pressing the dial indicator at the periphery of the hub body 7, pulling the tooling blade flange 3 upwards by using the hoist 2, and measuring the pulling force and the corresponding upward displacement; the oil pipe cover 801, the oil filling pipe 802, the supporting seat 803, the pressing cover 804, the hose and the joint are installed, and the operation experiment can be started after the operation experiment is completed. In the low-pressure part in the propeller hub body 7, a three-position five-way electromagnetic directional valve 11 is arranged in the middle of a piston rod; when the pressure of the propeller hub body 7 rises, the three-position five-way electromagnetic directional valve 11 is opened; the function of the three-position five-way electromagnetic directional valve 11 was checked as follows: connecting a pressure meter to a lubrication cavity of the hub body 7, and gradually increasing the oil pressure of the hub body 7; the pressure for opening the three-position five-way electromagnetic directional valve 11 can be seen on the pressure gauge; when the three-position five-way electromagnetic directional valve 11 is opened, the flow increase can be seen in the inner hole of the shaft, and the lowest starting pressure is recorded; slowly changing the distance between the full-forward vehicle and the full-reverse vehicle, and recording the lowest starting pressure; restoring the hydraulic pump station 13 and a connecting pipeline, connecting a cable to a power supply, starting the hydraulic pump station 13, and injecting oil from an oil tank 14 to an oil distribution ring A port 9 and an oil distribution ring B port 10; increasing the pressure to 2MPa, respectively using one pump and two pumps 13 to work, adjusting the pitch of the blade from full forward turning to full reverse turning, then from full reverse turning to full forward turning, and recording the distance adjusting time and the oil pressure in the distance adjusting process; whether the variable pitch is normal or not is checked (the pitch adjusting time is about 20s and is considered to meet the sensitive requirement of pitch adjustment), the blade sealing ring 5 and each hose joint are oil-tight, and the pressure of a hydraulic pump station is normal or not; installing a peeping cover and a gap adjusting gasket 4, and injecting hydraulic oil into the gear box through an oil injection pipe 802; pressurizing by using a manual pump from an oil port on the oil pipe cover 801, maintaining the pressure when the pressure of a low-pressure part of a propeller hub reaches 0.1MPa for 5 hours, and preventing leakage at all joints of the gear box and the tool; and (3) detaching the blade flange 3 of the tool, replacing the processed gap adjusting gasket 4, and carrying out the experiment again.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A test device for a whole dynamic seal machine of an adjustable propeller hub is characterized by comprising a tooling propeller blade flange component, a measuring component and a hydraulic system communicated with the propeller hub, wherein,
the tooling paddle flange assembly comprises a tooling paddle flange (3), a paddle sealing ring (5) and a crank pin disc (6), the tooling paddle flange (3) and the crank pin disc (6) are respectively sleeved on the outer circumference of a paddle hub body (7), the end part of the tooling paddle flange (3) is aligned to the crank pin disc (6), and sealing is realized through the paddle sealing ring (5);
the measuring assembly comprises at least one dial indicator which is adsorbed on the tooling blade flange (3) and pressed on the outer circumference of the hub body (7), and the distance between the tooling blade flange (3) and the hub body (7) is read through the dial indicator;
the hydraulic system comprises an oil hydraulic cylinder (8), one end of the oil hydraulic cylinder (8) is communicated with an oil tank (14) through a three-position five-way electromagnetic reversing valve (11), the other end of the oil hydraulic cylinder is communicated with a propeller hub to form a hydraulic system loop, linear motion is converted into rotation of the crank pin disc (6) through the action of the hydraulic system loop, the adjustable propeller blades are driven to move on the propeller hub, therefore, the adjustment of the screw pitch is realized, and the dynamic seal complete machine test of the adjustable propeller hub is carried out under the condition.
2. The complete machine testing device for dynamic sealing of the adjustable propeller hub according to claim 1, wherein the tooling blade flange assembly comprises at least one clearance adjusting gasket (4), and the clearance adjusting gasket (4) is arranged between the tooling blade flange (3) and the crank pin disc (6).
3. The testing device for the whole dynamic seal machine of the propeller hub of the adjustable propeller as claimed in claim 2, wherein the thicknesses of the gap adjusting gaskets (4) are different, and one or more gap adjusting gaskets (4) with different thicknesses are replaced according to testing requirements to realize different gap adjustments.
4. The adjustable propeller hub dynamic seal complete machine testing device according to any one of claims 1 to 3, wherein the tooling blade flange assembly comprises a first tooling cushion block (15) and a second tooling cushion block (16), wherein the first tooling cushion block (15) is arranged at the bottom of the propeller hub body (7), and the second tooling cushion block (16) is arranged at the bottom of the oil hydraulic cylinder (8).
5. The complete machine testing device for the dynamic sealing of the adjustable propeller hub according to claim 1, wherein the measuring assembly further comprises a hoist (2) connected with the tooling propeller flange (3) and a thrust gauge (1) connected with the hoist (2).
6. The testing device for the whole adjustable-paddle propeller hub dynamic seal machine is characterized in that the hydraulic system further comprises an oil distribution ring A port (9) and an oil distribution ring B port (10) which are connected with the oil hydraulic cylinder (8); the port A (9) of the oil distribution ring is communicated with an oil tank (14) through a three-position five-way electromagnetic directional valve (11); and the oil distribution ring B port (10) is communicated with an oil tank (14) through a three-position five-way electromagnetic directional valve (11) and a hydraulic pump station (13).
7. The testing device for the whole dynamic seal machine of the propeller hub with the adjustable propeller as claimed in claim 6, wherein a bypass pipeline is arranged on a pipeline system of the oil distribution ring B port (10), the three-position five-way electromagnetic directional valve (11), the hydraulic pump station (13) and the oil tank (14), and an overflow valve (12) is arranged on the bypass pipeline.
8. The testing device for the whole dynamic seal machine of the propeller hub with the adjustable propeller as recited in claim 1, wherein the oil hydraulic cylinder (8) further comprises a supporting seat (803) sequentially arranged on the cylinder body, an oil filling pipe (802) connected with the supporting seat (803), an oil display pipe cover (801) arranged at one end of the supporting seat (803), and a pressing cover (804) arranged at one end of the hydraulic cylinder (8).
9. A test method for a whole machine with a dynamic seal of an adjustable propeller hub is characterized by being realized by applying the test device of any one of claims 1 to 8, comprising a propeller hub assembly gap measurement and adjustment test and a propeller hub dynamic tightness test, and specifically comprising the following steps:
s1, mounting a tooling blade flange (3), locking a bolt of an adjustable blade, and knocking the tooling blade flange (3) to enable the tooling blade flange (3) to move downwards to be parallel to the end face of the crank pin disc (6);
s2, uniformly adsorbing a plurality of dial indicators on symmetrical positions of a tooling blade flange (3) and pressing the dial indicators on the periphery of a hub body (7), setting the readings of the dial indicators to zero, hoisting the tooling blade flange (3), recording the value of the dial indicator when the readings of the dial indicators are not changed, taking the average value of the readings of all the dial indicators as the reading value of the test, measuring for many times and taking the average value of all the readings as the assembly clearance value of the hub;
s3, changing the assembly clearance of the propeller hub so as to change the compression ratio of the blade sealing ring (5), and repeating the steps S1 and S2 so as to complete the measurement and adjustment test of the assembly clearance of the propeller hub;
s4, under different propeller hub assembly gaps, collision interference inspection is conducted on the adjustable propeller hub to be tested to ensure that a hydraulic system communicated with the propeller hub works normally, then oil pressure of the hydraulic system is adjusted to achieve adjustment of the pitch of the blades of the adjustable propeller from a full-forward vehicle to a full-reverse vehicle, then the pitch of the blades of the adjustable propeller is adjusted from a full-reverse vehicle to a full-forward vehicle, variable pitch time and oil pressure in the variable pitch process are recorded, under the condition that the pitch of the blades is normal, whether oil leaks at a blade sealing ring (5) and each hose joint is checked, if oil leaks, dynamic sealing performance of the propeller hub is unqualified under the propeller hub assembly gap, and if oil does not leak, dynamic sealing performance of the propeller hub is qualified under the propeller hub assembly gap.
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| CN112460258A (en) * | 2020-11-24 | 2021-03-09 | 江南造船(集团)有限责任公司 | Ship cable trough penetrating piece sealing device and using method thereof |
| CN116734702A (en) * | 2023-08-07 | 2023-09-12 | 江苏烨培干燥工程有限公司 | Screw blade continuous detection equipment for blade dryer |
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| CN116734702A (en) * | 2023-08-07 | 2023-09-12 | 江苏烨培干燥工程有限公司 | Screw blade continuous detection equipment for blade dryer |
| CN116734702B (en) * | 2023-08-07 | 2023-10-13 | 江苏烨培干燥工程有限公司 | Screw blade continuous detection equipment for blade dryer |
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