CN114046987B - Multi-physical quantity measurement test device for rotating shaft sealing - Google Patents
Multi-physical quantity measurement test device for rotating shaft sealing Download PDFInfo
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- CN114046987B CN114046987B CN202210035042.3A CN202210035042A CN114046987B CN 114046987 B CN114046987 B CN 114046987B CN 202210035042 A CN202210035042 A CN 202210035042A CN 114046987 B CN114046987 B CN 114046987B
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- rotating shaft
- sleeve
- intermediate ring
- side end
- end cover
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/005—Sealing rings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention discloses a multi-physical quantity measurement test device for rotating shaft sealing, which comprises: the shell defines a mounting cavity and is provided with a measuring window; a first sleeve; the second sleeve is sleeved on the outer surface of the rotating shaft, and the intermediate ring is positioned between the first sleeve and the second sleeve to divide the installation cavity into a first cavity and a second cavity; the rotating speed detection mechanism detects the rotating speed of the intermediate ring through the measurement window; the displacement detection mechanism detects the displacement of the intermediate ring in the axial direction of the rotating shaft through the measurement window; the temperature detection mechanism detects the temperature of the intermediate ring through the measurement window; a flow detection member. Therefore, the multi-physical quantity measurement test device can measure the rotating speed, the displacement in the axial direction of the rotating shaft and the temperature of the intermediate ring in real time, so that the real-time state of the sealing ring is known, and the influence of the rotating speed, the displacement in the axial direction of the rotating shaft and the temperature of the intermediate ring on the sealing performance of the intermediate ring is obtained.
Description
Technical Field
The invention relates to the field of measurement tests, in particular to a multi-physical-quantity measurement test device for rotating shaft sealing.
Background
The mechanical seal is a seal for a rotating shaft with low abrasion, long service life and high reliability. Because of the good comprehensive performance, the mechanical seal is widely applied in the fields of aerospace, petroleum and petrochemical industry and the like. The mechanical seal with the intermediate ring structure can ensure that the sealing end faces with low (high) rotating speed have higher (low) relative speed, so that the mechanical sealing end faces of all stages can keep a reasonable relative rotating speed, and further the dynamic pressure non-contact type mechanical seal can stably work.
In the related art, after the sealing assembly with the intermediate ring is mounted on the rotating shaft, due to the special position of the intermediate ring seal, during the rotation of the rotating shaft, the rotating speed, the displacement in the axial direction of the rotating shaft, and the temperature parameters of the intermediate ring seal are difficult to measure, and the influence of the rotating speed, the displacement in the axial direction of the rotating shaft, and the temperature of the intermediate ring seal on the sealing performance of the intermediate ring structure cannot be known.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a multi-physical-quantity measurement test apparatus for a rotary shaft seal, which can measure the rotation speed, the displacement in the axial direction of a rotary shaft, and the temperature of a seal ring having an intermediate ring structure in real time, and thereby know the real-time state of the seal ring, and further obtain the influence of the rotation speed, the displacement in the axial direction of the rotary shaft, and the temperature of the seal ring having the intermediate ring structure on the sealing performance of the intermediate ring.
The invention provides a multi-physical quantity measurement test device for a rotating shaft seal, comprising: the measuring device comprises a shell, a first measuring window, a second measuring window and a measuring window, wherein the shell defines a mounting cavity, one end of a rotating shaft extends into the mounting cavity, and is provided with a first inlet and a second inlet; the first sleeve is sleeved outside the rotating shaft and positioned in the mounting cavity, and the first sleeve is in contact with the inner surface of the mounting cavity; the second sleeve is sleeved on the outer surface of the rotating shaft and is positioned in the mounting cavity; the middle ring is sleeved on the outer surface of the second sleeve and located in the installation cavity, the middle ring is located between the first sleeve and the second sleeve so as to divide the installation cavity into a first cavity and a second cavity, the first inlet is communicated with the first cavity, and the second inlet is communicated with the second cavity; the rotating speed detection mechanism is arranged corresponding to the measuring window and arranged outside the shell, and detects the rotating speed of the intermediate ring through the measuring window; the displacement detection mechanism is arranged corresponding to the measuring window and arranged outside the shell, and the displacement detection mechanism detects the displacement of the intermediate ring in the axial direction of the rotating shaft through the measuring window; the temperature detection mechanism is arranged corresponding to the measuring window and arranged outside the shell, and detects the temperature of the intermediate ring through the measuring window; the flow detection piece is used for detecting the flow of the medium flowing into the first chamber; and the driving mechanism is used for driving the rotating shaft to rotate.
According to the multi-physical-quantity measurement test device for the rotating shaft seal, the rotating speed, the displacement in the axial direction of the rotating shaft and the temperature of the intermediate ring with the intermediate ring structure can be measured in real time, so that the real-time state of the intermediate ring can be known, and the influence of the rotating speed, the displacement in the axial direction of the rotating shaft and the temperature of the intermediate ring on the sealing performance of the intermediate ring can be further obtained.
In some examples of the present invention, the first sleeve is movable relative to the housing in the axial direction of the rotary shaft, and the first sleeve is adapted to adjust a contact state of the intermediate ring and the first sleeve when the first sleeve is moved relative to the housing in the axial direction of the rotary shaft.
In some examples of the invention, the housing comprises: the shell comprises a shell body, a first side end cover and a second side end cover, wherein the shell body is constructed into a cylindrical structure, two ends of the shell body are opened in the axial direction of the rotating shaft, the first side end cover and the second side end cover are respectively used for sealing two opened ends of the shell body, and one end of the rotating shaft passes through one of the first side end cover and the second side end cover and then is rotatably installed on the other one of the first side end cover and the second side end cover.
In some examples of the invention, the first side end cap is provided with the measurement window which is transparent.
In some examples of the invention, the measurement window is configured as a closed loop.
In some examples of the present invention, the number of the measurement windows is plural, and the rotation speed detection mechanism, the displacement detection mechanism, and the temperature detection mechanism correspond to the plural measurement windows one to one, respectively.
In some examples of the present invention, the multi-physical-quantity measurement testing apparatus for a rotary shaft seal further includes: the shaft sleeve is sleeved on the outer side of the rotating shaft and located in the installation cavity, the shaft sleeve is located between the second side end cover and the first sleeve, and the second side end cover is suitable for driving the shaft sleeve to drive the first sleeve to move relative to the shell when the axial direction of the rotating shaft faces towards the shell body.
In some examples of the present invention, the multi-physical-quantity measurement testing apparatus for a rotary shaft seal further includes: the movable adjusting piece is connected between the shell body and the second side end cover and used for adjusting the position of the second side end cover relative to the shell body in the axial direction of the rotating shaft.
In some examples of the invention, the sleeve is provided with an avoidance port for avoiding the second inlet.
In some examples of the present invention, the multi-physical-quantity measurement testing apparatus for a rotary shaft seal further includes: the acoustic emission sensor is arranged on the outer surface of the shell and used for detecting the rotating speed of the intermediate ring and the abrasion of the intermediate ring.
In some examples of the invention, the outer surface of the rotating shaft is sleeved with a slinger disc, and the slinger disc is located in the second chamber.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a cross-sectional view of a multi-physical quantity measurement test apparatus according to an embodiment of the present invention, detecting an intermediate ring;
fig. 2 is a sectional view of a multi-physical quantity measuring test apparatus according to an embodiment of the present invention, which detects two intermediate rings.
Reference numerals:
a multi-physical quantity measurement test apparatus 100;
a housing 10; a measurement window 11; a first inlet 12; a second inlet 13; a first chamber 14; a second chamber 15; a housing body 16; a first side end cap 17; a second side end cap 18; a liquid outlet 19;
a first sleeve 20;
a second sleeve 30; a stopper seat 31;
a seal assembly 40, an intermediate ring 41; the first seal ring 42; a second seal ring 43;
a rotational speed detection mechanism 50; a displacement detection mechanism 60;
a shaft sleeve 80; an avoidance port 81;
moving the adjusting member 90; an acoustic emission sensor 91; a liquid throwing disk 92; a first bearing 93; a second bearing 94; a bearing hold down cover 95; a lip seal 96; a nut 97;
the shaft 200 is rotated.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A multi-physical quantity measuring test apparatus 100 for sealing a rotating shaft 200 according to an embodiment of the present invention is described below with reference to fig. 1 and 2.
As shown in fig. 1, a multi-physical quantity measurement test apparatus 100 according to an embodiment of the present invention includes: the device comprises a shell 10, a first sleeve 20, a second sleeve 30, a sealing assembly 40, an intermediate ring 41, a rotating speed detection mechanism 50, a displacement detection mechanism 60, a temperature detection mechanism (not shown in the figure), a flow detection piece and a driving mechanism. The housing 10 is installed on a base of the multi-physical quantity measurement testing apparatus 100, the housing 10 defines a mounting cavity into which one end of the rotating shaft 200 extends, specifically, as shown in fig. 1, a left end of the rotating shaft 200 extends into the mounting cavity, the housing 10 is provided with a measurement window 11, and the housing 10 is further provided with a first inlet 12 and a second inlet 13. The outer side of rotation axis 200 and being located the installation cavity are located to first sleeve 20 cover, and first sleeve 20 and the internal surface contact of installation cavity, and further, as shown in fig. 1, the surface that first sleeve 20 and installation cavity contact sets up to first inclined plane, and the internal surface that the installation cavity and first sleeve 20 contact sets up to the second inclined plane, and from left to right direction in fig. 1, first inclined plane and second inclined plane all incline towards the top.
The second sleeve 30 is sleeved on the outer surface of the rotating shaft 200 and located in the installation cavity, the second sleeve 30 is fixedly connected with the rotating shaft 200, and the rotating shaft 200 drives the second sleeve 30 to rotate together when rotating. The intermediate ring 41 is sleeved on the outer surface of the second sleeve 30 and located in the installation cavity, the intermediate ring 41 is located between the first sleeve 20 and the second sleeve 30, further, as shown in fig. 1, the radial inner surface of the intermediate ring 41 is in contact with the second sleeve 30, and the radial outer surface of the intermediate ring 41 is in contact with the first sleeve 20, so that the installation cavity can be divided into a first chamber 14 and a second chamber 15, as shown in fig. 1, the first chamber 14 can be located on the left side of the intermediate ring 41, the second chamber 15 can be located on the right side of the intermediate ring 41, the first inlet 12 is communicated with the first chamber 14, the second inlet 13 is communicated with the second chamber 15, gas can flow into the first chamber 14 from the first inlet 12, and oil can flow into the second chamber 15 from the second inlet 13.
The rotation speed detecting mechanism 50 is disposed corresponding to the measuring window 11 and outside the housing 10, further, the rotation speed detecting mechanism 50 may be a rotation speed sensor, the rotation speed detecting mechanism 50 detects the rotation speed of the intermediate ring 41 through the measuring window 11, a mark structure or a light reflecting structure is disposed on a surface of the intermediate ring 41 opposite to the rotation speed detecting mechanism 50, the rotation speed detecting mechanism 50 detects the number of times of the mark structure or the light reflecting structure through the measuring window 11 (the rotation speed detecting mechanism 50 detects the mark structure once every rotation of the intermediate ring 41), a control unit of the multi-physical quantity measurement testing apparatus 100 is in communication connection with the rotation speed detecting mechanism 50, the rotation speed detecting mechanism 50 sends the number of times of detecting the mark structure or the light reflecting structure to the control unit, and the control unit obtains the rotation speed of the intermediate ring 41 according to the rotation time of the intermediate ring 41 and the number of times of detecting the mark structure or the light reflecting structure by the rotation speed detecting mechanism 50.
The displacement detecting mechanism 60 is in communication connection with the control unit, the displacement detecting mechanism 60 is disposed corresponding to the measuring window 11 and outside the housing 10, further, the displacement detecting mechanism 60 may be a displacement sensor, and the displacement detecting mechanism 60 detects the displacement of the middle ring 41 in the axial direction of the rotating shaft 200 through the measuring window 11. The temperature detection mechanism is in communication connection with the control unit, is arranged corresponding to the measurement window 11 and is arranged outside the shell 10, and further can be an infrared temperature sensor and detects the temperature of the intermediate ring 41 through the measurement window 11. The flow sensing member may be provided as a flow meter for sensing the flow of the medium flowing into the first chamber 14, and further, the flow meter is provided at the first inlet 12. The driving mechanism may be a driving motor, and the driving mechanism is connected to the rotating shaft 200 and is configured to drive the rotating shaft 200 to rotate.
The rotation speed, temperature, and end surface contact state of the intermediate ring 41 are not independent physical quantities, but are coupled and coacted with each other. The contact state of the intermediate ring 41 with the first sleeve 20 and the second sleeve 30 and the contact state of the end face of the intermediate ring 41 influence the rotation speed of the intermediate ring 41 to a certain extent, and under the combined action of the rotation speed and the contact state, the temperature of the intermediate ring 41 and the force and thermal deformation of the intermediate ring 41 influence the sealing performance of the intermediate ring 41, and determine the comprehensive sealing performance of the intermediate ring 41.
In some embodiments of the present invention, when the multi-physical-quantity measuring and testing apparatus 100 is in operation, the driving mechanism drives the rotating shaft 200 to drive the second sleeve 30 to rotate, so that the gas can be filled into the first chamber 14 through the first inlet 12, and the oil can be filled into the second chamber 15 through the second inlet 13, if the sealing performance of the intermediate ring 41 is good, the gas in the first chamber 14 cannot flow into the second chamber 15, the amount of the gas flowing into the first chamber 14 is fixed (rated flow), and if the sealing performance of the intermediate ring 41 is poor, the gas in the first chamber 14 can flow into the second chamber 15. During the test, if the flow rate detector detects that the gas flowing into the first chamber 14 has a flow rate greater than the rated flow rate, it indicates that the gas in the first chamber 14 can flow into the second chamber 15, and at this time, the flow rate detector detects that the gas flowing into the first chamber 14 has a total flow rate minus the rated flow rate, which is the actual leakage rate of the gas.
When the driving mechanism drives the rotating shaft 200 to rotate the second sleeve 30, the intermediate ring 41 also rotates, the rotating speed detecting mechanism 50 detects the rotating speed of the intermediate ring 41, the displacement detecting mechanism 60 detects the displacement of the intermediate ring 41 in the axial direction of the rotating shaft 200, the temperature detecting mechanism detects the temperature of the intermediate ring 41, the rotating speed detecting mechanism 50 sends the rotating speed information of the intermediate ring 41 to the control unit, the displacement detecting mechanism 60 sends the displacement information of the intermediate ring 41 to the control unit, the temperature detecting mechanism sends the temperature information of the intermediate ring 41 to the control unit, the flow rate detector sends the total flow rate information of the gas flowing into the first chamber 14 to the control unit, and the control unit receives the information and judges the relation among the sealing performance of the intermediate ring 41, the rotating speed of the intermediate ring 41, the temperature of the intermediate ring 41 and the displacement of the intermediate ring 41 in the axial direction of the rotating shaft 200, it is thereby possible to obtain the influence of the rotation speed of the intermediate ring 41, the displacement in the axial direction of the rotary shaft 200, and the temperature on the sealing performance of the intermediate ring 41.
Thus, the multi-physical-quantity measurement test apparatus 100 according to the present invention can measure the rotation speed, the displacement in the axial direction of the rotating shaft 200, and the temperature of the intermediate ring 41 in real time, understand the real-time state of the intermediate ring 41, and obtain the influence of the rotation speed, the displacement in the axial direction of the rotating shaft 200, and the temperature of the intermediate ring 41 on the sealing performance of the intermediate ring 41.
In some embodiments of the present invention, the first sleeve 20 is movable relative to the housing 10 in an axial direction of the rotary shaft 200, the axial direction of the rotary shaft 200 being a left-right direction in fig. 1, the first sleeve 20 is adapted to adjust a contact state of the intermediate ring 41 and the first sleeve 20 when the rotary shaft 200 is moved relative to the housing 10 in the axial direction, and the first sleeve 20 presses the intermediate ring 41 when the first sleeve 20 is moved leftward relative to the housing 10 as shown in fig. 1. The contact state of the intermediate ring 41 and the first sleeve 20 affects the sealing performance of the intermediate ring 41, and the pressing degree of the first sleeve 20 pressing the intermediate ring 41 can be changed by moving the first sleeve 20 relative to the housing 10 in the axial direction of the rotating shaft 200, and the sealing performance of the intermediate ring 41 is different under the condition of different pressing degrees, so that the relationship between the different pressing degrees of the first sleeve 20 on the intermediate ring 41 and the sealing performance of the intermediate ring 41 can be detected.
In some embodiments of the present invention, as shown in fig. 1, the housing 10 may include: the outer shell body 16 is configured as a cylindrical structure, the outer shell body 16 is sleeved outside the rotating shaft 200, two ends of the outer shell body 16 are opened in the axial direction of the rotating shaft 200, namely, the left end and the right end of the outer shell body 16 are both opened, the first side end cover 17 and the second side end cover 18 are respectively used for sealing two opened ends of the outer shell body 16, and one end of the rotating shaft 200 penetrates through one of the first side end cover 17 and the second side end cover 18 and then is rotatably installed on the other one of the first side end cover 17 and the second side end cover 18. Further, the first side cover 17 is used for sealing the left end of the housing body 16, the first side cover 17 is fixedly connected with the housing body 16, the second side cover 18 is used for sealing the right end of the housing body 16, the left end of the rotating shaft 200 passes through the second side cover 18 and then is rotatably mounted on the first side cover 17, a first bearing 93 is arranged between the first side cover 17 and the left end of the rotating shaft 200, and a second bearing 94 is arranged between the second side cover 18 and the rotating shaft 200, so that the technical effect that the rotating shaft 200 rotates relative to the housing 10 can be achieved, and the rotating shaft 200 can be ensured to rotate stably relative to the housing 10.
Further, as shown in fig. 1, a bearing pressing cover 95 is disposed between the second side cover 18 and the rotating shaft 200, the bearing pressing cover 95 is sleeved on the outer surface of the rotating shaft 200, the bearing pressing cover 95 is located at the right side of the second bearing 94, and the bearing pressing cover 95 presses the second bearing 94 against the rotating shaft 200, so that the rotating shaft 200 is reliably mounted on the housing 10. Further, as shown in fig. 1, a lip seal 96 is disposed between the second side cover 18 and the rotating shaft 200, the lip seal 96 is disposed on the outer surface of the rotating shaft 200, the lip seal 96 is disposed on the right side of the bearing pressing cover 95, and when the rotating shaft 200 is in the start-up phase, i.e., when the rotating shaft 200 rotates at a low speed, the oil in the second chamber 15 is sealed by the lip seal 96, so that the oil in the second chamber 15 is prevented from leaking between the second side cover 18 and the rotating shaft 200.
In some embodiments of the present invention, as shown in fig. 1, a liquid-throwing disk 92 is sleeved on the outer surface of the rotating shaft 200, the liquid-throwing disk 92 is located in the second chamber 15, and the liquid-throwing disk 92 is located at the left side of the second bearing 94, so that when the rotating speed of the rotating shaft 200 is high, oil in the second chamber 15 is thrown to the inner wall of the second chamber 15 by the oil-throwing disk under the action of centrifugal force, thereby preventing leakage of lubricating oil (oil).
In some embodiments of the present invention, as shown in fig. 1, the first side cover 17 may be provided with a transparent measurement window 11, the measurement window 11 is provided in the first side cover 17, and by setting the measurement window 11 to be transparent, it is ensured that the rotation speed detecting mechanism 50 detects the rotation speed of the intermediate ring 41 through the measurement window 11, it is also ensured that the displacement detecting mechanism 60 detects the displacement of the intermediate ring 41 in the axial direction of the rotating shaft 200 through the measurement window 11, and it is also ensured that the temperature detecting mechanism detects the temperature of the intermediate ring 41 through the measurement window 11, so that the working performance of the multi-physical quantity measurement testing apparatus 100 can be ensured.
In some embodiments of the present invention, as shown in fig. 1, the measurement window 11 is configured as a closed loop structure, such that the measurement window 11 is disposed on the first side cover 17 along the entire circumferential direction, the rotation speed detection mechanism 50, the displacement detection mechanism 60, and the temperature detection mechanism are disposed on the left side of the first side cover 17, and when the rotation speed detection mechanism 50, the displacement detection mechanism 60, and the temperature detection mechanism are disposed at intervals in the circumferential direction, it is ensured that the rotation speed detection mechanism 50, the displacement detection mechanism 60, and the temperature detection mechanism can all detect corresponding parameters of the intermediate ring 41, so as to further ensure the working performance of the multi-physical quantity measurement test apparatus 100.
In some embodiments of the present invention, the number of the measurement windows 11 is multiple, and the rotation speed detection mechanism 50, the displacement detection mechanism 60, and the temperature detection mechanism are respectively corresponding to the multiple measurement windows 11 one by one, specifically, the number of the measurement windows 11 is three, and the three measurement windows 11 are respectively corresponding to the rotation speed detection mechanism 50, the displacement detection mechanism 60, and the temperature detection mechanism, so that the mutual influence among the rotation speed detection mechanism 50, the displacement detection mechanism 60, and the temperature detection mechanism can be avoided, and the detection results of the rotation speed detection mechanism 50, the displacement detection mechanism 60, and the temperature detection mechanism can be ensured.
In some embodiments of the present invention, as shown in fig. 1, the multi-physical-quantity measurement testing apparatus 100 may further include: the shaft sleeve 80 is sleeved outside the rotating shaft 200 and located in the installation cavity, the shaft sleeve 80 is located between the second side end cover 18 and the first sleeve 20, and the second side end cover 18 is adapted to drive the shaft sleeve 80 to drive the first sleeve 20 to move relative to the housing 10 when the rotating shaft 200 moves towards the housing body 16 in the axial direction. As shown in fig. 1, the second side cover 18 is disposed at the right side of the housing body 16, the bushing 80 is located between the second side cover 18 and the first bushing 20, when the second side cover 18 moves to the left, the second side cover 18 drives the bushing 80 to move toward the first bushing 20, the bushing 80 pushes the first bushing 20 to move to the left, and the first bushing 20 presses the intermediate ring 41 when moving to the left, so that the compression degree between the first bushing 20 and the intermediate ring 41 is changed, and the contact state between the first bushing 20 and the intermediate ring 41 can be adjusted.
In some embodiments of the present invention, as shown in fig. 1, the multi-physical-quantity measurement testing apparatus 100 may further include: a movement adjusting member 90, the movement adjusting member 90 being connected between the housing body 16 and the second side cover 18, the movement adjusting member 90 being for adjusting the position of the second side cover 18 relative to the housing body 16 in the axial direction of the rotary shaft 200. The movable adjusting member 90 may be configured as a bolt or a screw, the movable adjusting member 90 is in threaded connection with both the housing body 16 and the second side cover 18, the position of the second side cover 18 relative to the housing body 16 in the axial direction of the rotating shaft 200 can be adjusted by adjusting the tightening degree of the bolt or the screw, and the axial position of the shaft sleeve 80 can be adjusted online, so that the degree of compression between the first sleeve 20 and the intermediate ring 41 can be adjusted online, and the contact state between the first sleeve 20 and the intermediate ring 41 can be adjusted conveniently.
In some embodiments of the present invention, as shown in fig. 1, the shaft sleeve 80 is provided with an avoiding port 81 for avoiding the second inlet 13, since the shaft sleeve 80 is disposed inside the housing body 16, and the avoiding port 81 is disposed to correspond to the second inlet 13, when liquid is injected into the second chamber 15 from the second inlet 13, the avoiding port 81 avoids the second inlet 13, so that the oil can be ensured to flow into the second chamber 15.
Further, the housing body 16 is provided with the liquid outlet 19, and the shaft sleeve 80 is provided with an avoiding opening 81 for avoiding the liquid outlet 19, and after the test is finished, the oil in the second chamber 15 can flow out of the second chamber 15 through the liquid outlet 19, so that the oil in the second chamber 15 is discharged. It should be noted that the outlet 19 may be closed during the test.
In some embodiments of the present invention, the outer surface of the rotating shaft 200 is sleeved with the nut 97, the nut 97 is located at the left side of the second sleeve 30, and the nut 97 is pressed against the left side of the second sleeve 30, thereby reliably fixing the second sleeve 30 to the rotating shaft 200.
In some embodiments of the present invention, as shown in fig. 1 and 2, the sealing assembly 40 includes a first sealing ring 42, a second sealing ring 43, and a retainer seat 31, the first sealing ring 42 and the retainer seat 31 are both sleeved on the outer side surface of the second sleeve 30, the retainer seat 31 is provided with a mounting groove, the left end of the mounting groove is open, the right end of the second sealing ring 43 is mounted in the mounting groove, a spring is supported between the second sealing ring 43 and the bottom wall of the mounting groove, and an intermediate ring 41 is disposed between the left end of the second sealing ring 43 and the right end of the first sealing ring 42.
In some embodiments of the present invention, as shown in fig. 1 and 2, a cavity is provided inside the second sleeve 30 and/or the sealing assembly 40 between the spindle and the sealing member, so that the load and torque of the driving motor can be reduced at a lower torque on the basis of ensuring the comprehensive performance of the sealing, and the rotating shaft 200 can have a higher rotating speed.
In some embodiments of the present invention, as shown in fig. 1, the multi-physical-quantity measurement testing apparatus 100 may further include: the acoustic emission sensor 91 is provided on the outer surface of the housing 10, and further, the acoustic emission sensor 91 is provided on the outer surface of the housing body 16, and the acoustic emission sensor 91 detects the rotation speed of the intermediate ring 41 and the wear of the intermediate ring 41. The acoustic emission sensor 91 is in communication connection with the control unit, the acoustic emission sensor 91 can send the detected rotating speed of the intermediate ring 41 and the abrasion information of the intermediate ring 41 to the control unit, the acoustic emission sensor 91 measures the rotating speeds of the intermediate ring 41 and other rotating parts by means of signal analysis, the rotating speed of the intermediate ring 41 can be checked to a certain extent, the abrasion degree of the intermediate ring 41 is detected by the acoustic emission sensor 91, and a more three-dimensional and comprehensive sealing state of the intermediate ring 41 is established.
Meanwhile, as shown in fig. 2, when there are a plurality of intermediate rings 41, for example, when there are two intermediate rings 41, the rotation speed detecting means 50 may detect the rotation speed of the intermediate ring 41 located on the left side, the displacement detecting means 60 may detect the displacement of the intermediate ring 41 located on the left side in the axial direction of the rotary shaft 200, the temperature detecting means may detect the temperature of the intermediate ring 41 located on the left side, the acoustic emission sensor 91 may detect the rotation speed and the frictional wear state of the intermediate ring 41 located on the right side, and the acoustic emission sensor 91 may detect the rotation speed and the frictional wear state of the intermediate ring 41 located on the left side.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A multi-physical quantity measurement test device for a rotary shaft seal, comprising:
the measuring device comprises a shell, a first measuring window, a second measuring window and a measuring window, wherein the shell defines a mounting cavity, one end of a rotating shaft extends into the mounting cavity, and is provided with a first inlet and a second inlet;
the first sleeve is sleeved outside the rotating shaft and positioned in the mounting cavity, and the first sleeve is in contact with the inner surface of the mounting cavity;
the second sleeve is sleeved on the outer surface of the rotating shaft and is positioned in the mounting cavity;
the middle ring is sleeved on the outer surface of the second sleeve and located in the installation cavity, the middle ring is located between the first sleeve and the second sleeve so as to divide the installation cavity into a first cavity and a second cavity, the first inlet is communicated with the first cavity, and the second inlet is communicated with the second cavity;
the rotating speed detection mechanism is arranged corresponding to the measuring window and arranged outside the shell, and detects the rotating speed of the intermediate ring through the measuring window;
the displacement detection mechanism is arranged corresponding to the measuring window and arranged outside the shell, and the displacement detection mechanism detects the displacement of the intermediate ring in the axial direction of the rotating shaft through the measuring window;
the temperature detection mechanism is arranged corresponding to the measuring window and arranged outside the shell, and detects the temperature of the intermediate ring through the measuring window;
the flow detection piece is used for detecting the flow of the medium flowing into the first chamber;
and the driving mechanism is used for driving the rotating shaft to rotate.
2. The multi-physical-quantity measurement testing device for the rotating shaft seal according to claim 1, wherein said first sleeve is movable relative to said housing in the axial direction of said rotating shaft, said first sleeve being adapted to adjust a contact state of said intermediate ring and said first sleeve when said first sleeve is moved relative to said housing in the axial direction of said rotating shaft.
3. The multi-physical-quantity measurement testing device for the rotary shaft seal according to claim 2, wherein said housing comprises: the shell comprises a shell body, a first side end cover and a second side end cover, wherein the shell body is constructed into a cylindrical structure, two ends of the shell body are opened in the axial direction of the rotating shaft, the first side end cover and the second side end cover are respectively used for sealing two opened ends of the shell body, and one end of the rotating shaft passes through one of the first side end cover and the second side end cover and then is rotatably installed on the other one of the first side end cover and the second side end cover.
4. The multi-physical-quantity measurement testing device for the rotating shaft seal according to claim 3, wherein the first side end cap is provided with the transparent measurement window.
5. The multi-physical quantity measurement testing device for the rotating shaft seal according to claim 4, wherein the measurement window is configured in a closed loop shape.
6. The multi-physical-quantity measurement test device for the rotary shaft seal according to claim 4, wherein the number of the measurement windows is plural, and the rotation speed detection means, the displacement detection means, and the temperature detection means correspond to the plural measurement windows one to one.
7. The multi-physical-quantity measurement testing device for the rotary shaft seal according to claim 3, further comprising: the shaft sleeve is sleeved on the outer side of the rotating shaft and located in the installation cavity, the shaft sleeve is located between the second side end cover and the first sleeve, and the second side end cover is suitable for driving the shaft sleeve to drive the first sleeve to move relative to the shell when the axial direction of the rotating shaft faces towards the shell body.
8. The multi-physical-quantity measurement testing device for the rotary shaft seal according to claim 7, further comprising: the movable adjusting piece is connected between the shell body and the second side end cover and used for adjusting the position of the second side end cover relative to the shell body in the axial direction of the rotating shaft.
9. The multi-physical-quantity measurement test device for the rotary shaft seal according to claim 7, wherein the shaft sleeve is provided with an avoidance port for avoiding the second inlet.
10. The multi-physical-quantity measurement testing device for the rotary shaft seal according to claim 1, further comprising: the acoustic emission sensor is arranged on the outer surface of the shell and used for detecting the rotating speed of the intermediate ring and the abrasion of the intermediate ring.
11. The multi-physical-quantity measurement test device for the sealing of the rotating shaft according to claim 1, wherein a liquid-throwing disk is sleeved on the outer surface of the rotating shaft, and the liquid-throwing disk is located in the second chamber.
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