CN111829749A - Single-point displacement measuring device for wind tunnel supersonic flow correction large stroke and wiring method - Google Patents
Single-point displacement measuring device for wind tunnel supersonic flow correction large stroke and wiring method Download PDFInfo
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- CN111829749A CN111829749A CN202010731783.6A CN202010731783A CN111829749A CN 111829749 A CN111829749 A CN 111829749A CN 202010731783 A CN202010731783 A CN 202010731783A CN 111829749 A CN111829749 A CN 111829749A
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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
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Abstract
The invention discloses a single-point displacement measuring device and a wiring method for large stroke correction of a wind tunnel supersonic flow, which relate to the technical field of wind tunnel supersonic flow field check, and have the technical scheme that: the wind tunnel wall plate comprises a wind tunnel wall plate, a tail support, a main support, an actuating mechanism, a connecting section, a probe switching section and a pressure measuring section, wherein the actuating mechanism is a servo electric cylinder; the pressure measuring part comprises a total pressure probe and a static pressure probe; the total pressure probe and the static pressure probe are connected with a measuring pipeline, and the measuring pipeline is fixedly wound with a piston rod of the servo electric cylinder; the measuring pipeline is connected with a balance weight outside the wind tunnel. The single-point moving measurement device increases the stroke of the actuating mechanism, so that the measurement area is wider, the measurement pipeline of the device is simple in wiring structure and low in cost, the wiring of the measurement pipeline is close to the device, the interference of turbulent airflow in the wind tunnel on the measurement pipeline is reduced, the blockage degree of the device is reduced, and the device is economical and applicable; meanwhile, the device has the advantages of high position control precision, more reliable measurement data and convenience in operation and maintenance.
Description
Technical Field
The invention relates to the technical field of wind tunnel supersonic flow field calibration, in particular to a large-stroke single-point displacement measuring device for wind tunnel supersonic flow calibration and a wiring method.
Background
The single-point displacement measuring device is an essential tool in wind tunnel supersonic flow field check, and is mainly used for measuring the incoming flow pressure of a key area in a wind tunnel, including total pressure and static pressure. Through the processing and analysis of the measured pressure data, the direction can be provided for the optimization of the wind tunnel operation control strategy and the flow field index, so that the overall performance of the wind tunnel is improved.
In the conventional one-meter-magnitude wind tunnel flow correction, the stroke of the traditional single-point displacement measuring device is short and is only 1.6m, the actuating mechanism of the traditional single-point displacement measuring device adopts a servo oil cylinder, a rising space still exists in the aspect of positioning control precision, and the blockage degree of the traditional single-point displacement measuring device is slightly larger. Along with the rapid development of wind tunnel construction, the requirements on the indexes of a flow field are higher and higher, the traditional single-point displacement measuring device cannot meet the requirements on the supersonic flow field check of a fresh wind tunnel, and the stroke and the blockage degree of the single-point displacement measuring device must be improved. Meanwhile, the measuring point of the single-point moving measuring device is arranged on the movable component, and the measuring modules such as the measuring sensor and the processor are arranged outside the wind tunnel body, so that the measuring pipeline of the single-point moving measuring device must be led out from the wind tunnel body to the outside along with the movable component. However, the air flow in the wind tunnel is turbulent, the working environment is very bad, the use frequency of the single-point displacement measuring device is high, and if the stroke of the actuating mechanism of the single-point displacement measuring device is to be increased, a great challenge is provided for the pipeline wiring method of the single-point displacement measuring device.
Therefore, in order to overcome the world's first-class wind tunnel and make the flow field index reach the world's advanced level, it is necessary to design a single-point movement measuring device with long stroke and small blockage degree and its pipeline layout method to solve the above-mentioned problems.
Disclosure of Invention
Compared with the existing single-point displacement measuring device, the single-point displacement measuring device increases the stroke of an actuating mechanism, so that the measuring area is wider, the measuring pipeline of the device has a simple wiring structure and low cost, the wiring of the measuring pipeline is close to the device, the interference of turbulent airflow in the wind tunnel on the measuring pipeline is reduced, the blockage degree of the device is reduced, and the device is economical and applicable; meanwhile, the device has the advantages of high position control precision, more reliable measurement data and convenience in operation and maintenance.
The technical purpose of the invention is realized by the following technical scheme: a single-point displacement measuring device for wind tunnel supersonic flow correction large stroke comprises a wind tunnel wall plate, a tail support, a main support, an actuating mechanism and a pressure measuring part, wherein the tail support and the main support are fixedly connected with the wind tunnel wall plate; the end part of a piston rod of the servo electric cylinder is fixedly connected with a connecting section; the end part of the connecting section, which is far away from the servo electric cylinder, is connected with a probe switching section; the pressure measuring part is arranged at the end part of the probe switching section far away from the connecting section; the pressure measuring part comprises a total pressure probe and a static pressure probe, and pressure sensing ends of the total pressure probe and the static pressure probe are positioned on the same cross section; the total pressure probe and the static pressure probe are connected with a measuring pipeline, and the measuring pipeline is fixedly wound with a piston rod of the servo electric cylinder through a probe switching section; the free end of the measuring pipeline is connected with a balance weight outside the wind tunnel through a pulley block mechanism.
By adopting the technical scheme, when the single-point displacement measuring device is used, the tail support and the main support are fixedly installed on the side wall of the wind tunnel wall plate, and the tail support and the main support are convenient for installation and fixation of the actuating mechanism; the actuating mechanism adopts a servo electric cylinder, and the specification of the servo electric cylinder is properly increased, so that the stability of the actuating mechanism in a large stroke can be increased, and the output torque requirement of the actuating mechanism can be met; the connection between the probe switching section and the piston rod of the servo electric cylinder is facilitated through the connecting section, and the connection with other flow calibration mechanisms is also facilitated; the total pressure probe and the static pressure probe are conveniently installed and fixed through the probe switching section, and meanwhile, the positions of the total pressure probe and the static pressure probe are conveniently controlled by controlling the extension of a piston rod of the servo electric cylinder, so that pressure data of different areas can be measured in the blowing process of the wind tunnel; the free ends of the measuring pipelines of the total pressure probe and the static pressure probe are connected with a balance weight outside the wind tunnel through a pulley block mechanism, so that the balance weight rises along with the measuring pipeline when a piston rod of the servo electric cylinder extends out, and the measuring pipeline can always return back to the outside of the tunnel in a tensioning manner under the dead weight of the balance weight when the piston rod of the servo electric cylinder retracts, so that the measuring pipeline is always in a stressed and tensioned state, and the interference of turbulent airflow in the wind tunnel is avoided; the total pressure and the static pressure of the incoming flow of a key area in the wind tunnel can be conveniently measured through the total pressure probe and the static pressure probe; compared with the existing single-point displacement measuring device, the single-point displacement measuring device increases the stroke of the actuating mechanism, so that the measuring area is wider, the measuring pipeline of the device has a simple wiring structure and low cost, the wiring of the measuring pipeline is close to the device, the interference of turbulent airflow in the wind tunnel on the measuring pipeline is reduced, the blockage degree of the device is reduced, and the device is economical and applicable; meanwhile, the device has the advantages of high position control precision, more reliable measurement data and convenience in operation and maintenance.
The invention is further configured to: the top surface of the tail support is provided with an ear seat; the servo electric cylinder is fixedly connected with the tail support through the lug seat, and the tail support is connected with the servo electric cylinder through a connecting pin shaft.
Through adopting above-mentioned technical scheme, through ear seat and connecting pin axle, the servo electronic jar of being convenient for is connected fixedly between supporting with the tail, and the installation with dismantle the convenience.
The invention is further configured to: the outer wall of the measuring pipeline is sleeved with a protection pipe.
Through adopting above-mentioned technical scheme, through the protection tube, be convenient for bear and the easy wearing and tearing part of measuring tube protects.
The invention is further configured to: and a reinforcing rib with a flow guiding function is arranged at the joint of the static pressure probe and the probe switching section.
Through adopting above-mentioned technical scheme, through the strengthening rib, be convenient for strengthen the installation of static pressure probe is fixed, the strengthening rib possesses the water conservancy diversion effect simultaneously, can reduce the influence of mechanism to the flow field to ensure the measurement accuracy of mechanism.
The invention is further configured to: the total pressure probe is cylindrical, the number of pressure sensing ports of the total pressure probe is 1, and the pressure sensing ports of the total pressure probe are consistent with the incoming flow direction.
Through adopting above-mentioned technical scheme, total pressure probe is cylindricly, and total pressure probe's pressure sensing port is 1, and total pressure probe's pressure sensing port is unanimous with the incoming flow direction, is convenient for ensure that total pressure probe carries out accurate measurement to the total pressure of the incoming flow in the wind-tunnel, reduces its interference to the flow field.
The invention is further configured to: the static pressure probe is wedge-shaped, and the pressure sensing ports of the static pressure probe are perpendicular to the incoming flow direction and are circumferentially arranged to be 8.
By adopting the technical scheme, the static pressure probe is in a wedge shape, the pressure sensing ports of the static pressure probe are perpendicular to the incoming flow direction, the number of the pressure sensing ports is 8, the static pressure probe is convenient to accurately measure the static pressure of the incoming flow in the wind tunnel, and the interference of the static pressure probe on a flow field is reduced.
The invention is further configured to: the motor line of servo electronic jar pastes and leans on servo electronic jar outer wall and backup pad, the outer wall cover of servo electronic jar's motor line is equipped with the safety cover.
Through adopting above-mentioned technical scheme, through the safety cover, be convenient for protect the motor line of servo electronic jar.
The invention is further configured to: the measuring pipeline penetrates through the wind tunnel wall plate and is led out of the wind tunnel, and a wear-resistant sliding sleeve is arranged at the position where the measuring pipeline penetrates through the wind tunnel wall plate.
Through adopting above-mentioned technical scheme, through wear-resisting sliding sleeve, at actuating mechanism's in-process that stretches out and draws back, be convenient for measure the pipeline and follow actuating mechanism's action and carry out relative displacement, reduce measure the wearing and tearing of pipeline.
A wiring method for a wind tunnel supersonic flow correction large stroke single point displacement measuring device comprises the following steps:
s1, mounting a protection tube, and enabling a measurement pipeline connected with the total pressure probe and the static pressure probe to penetrate through the protection tube to ensure that the measurement pipeline bears and wears part of the outer sleeve protection tube, wherein the surface of the protection tube is smooth and wear-resistant and has rigidity;
s2, determining the pipeline wiring position of the single-point movement measuring device, drilling a wiring hole on a wind tunnel wall plate, and installing a wear-resistant sliding sleeve and a pulley block mechanism;
s3, pipeline wiring, namely winding a measuring pipeline connected with the total pressure probe and the static pressure probe on the outer wall of a piston rod of the servo electric cylinder for a circle, then leading the measuring pipeline out of the wind tunnel through a wire hole drilled on a wind tunnel wall plate by a pulley block mechanism, and binding the measuring pipeline with a balance weight outside the wind tunnel, wherein the balance weight has sufficient moving space in the stroke of the servo electric cylinder;
s4, fixing the measuring pipeline, namely fixing the measuring pipeline wound on the outer wall of the piston rod of the servo electric cylinder by adopting an iron wire to ensure that the measuring pipeline cannot bear load;
and S5, carrying out no-load and test load debugging, and optimizing the mass of the balance weight and the fixed position of the iron wire according to the results of the no-load and test load debugging, so as to ensure the working reliability of the single-point moving and measuring device.
In conclusion, the invention has the following beneficial effects:
1. the control precision of the execution position of the execution mechanism of the single-point shift measurement device is high, and the measurement data is more reliable;
2. the actuating mechanism of the single-point moving measuring device adopts the servo electric cylinder, and the specification of the servo electric cylinder is properly increased, so that the stability of the actuating mechanism in a large stroke can be increased, the output torque requirement of the actuating mechanism can be met, and the measuring area of the device is wider while the stroke of the single-point moving measuring device is increased;
3. the device has simple wiring structure and low cost, the movable part of the actuating mechanism is wound for a circle and is close to the device as much as possible, the interference of turbulent airflow in the wind tunnel on the measuring pipeline is reduced, the blockage degree of the device is reduced, and the device is economical and applicable;
4. the device is convenient to operate and maintain, especially the measurement pipeline is mounted and dismounted, the mounting and dismounting time can be saved, and the mounting and dismounting efficiency is improved.
Drawings
FIG. 1 is a front view in embodiment 1 of the present invention;
FIG. 2 is a plan view in the embodiment 1 of the present invention;
FIG. 3 is a left side view in embodiment 1 of the present invention;
FIG. 4 is an isometric view of embodiment 1 of the present invention;
FIG. 5 is a partial sectional view in embodiment 1 of the present invention;
FIG. 6 is a three-dimensional view in embodiment 1 of the present invention;
fig. 7 is a flowchart in embodiment 2 of the present invention.
In the figure: 1. connecting a pin shaft; 2. a servo electric cylinder; 3. a motor wire; 4. a protective cover; 5. a connecting section; 6. a probe switching section; 7. a total pressure probe; 8. a static pressure probe; 9. supporting the tail; 10. measuring a pipeline; 11. a main support; 12. a counterweight; 13. a pulley block mechanism; 14. a wear-resistant sliding sleeve; 15. a wind tunnel wall plate; 16. an ear mount; 17. reinforcing ribs; 18. and (5) protecting the tube.
Detailed Description
The present invention is described in further detail below with reference to figures 1-7.
Example 1: the utility model provides a be used for wind-tunnel supersonic flow school large stroke single point to move measuring device, as shown in fig. 1 to fig. 6, includes wind-tunnel wallboard 15, tail support 9, main tributary brace 11, actuating mechanism and pressure measurement portion, tail support 9 and main tributary brace 11 and wind-tunnel wallboard 15 fixed connection, actuating mechanism are servo electronic jar 2, and servo electronic jar 2 is fixed in on tail support 9 and the main tributary brace 11, and servo electronic jar 2's piston rod is close to main tributary brace 11. The end of the piston rod of the servo electric cylinder 2 is fixedly connected with a connecting section 5. The end of the connecting section 5 far away from the servo electric cylinder 2 is connected with a probe switching section 6. The pressure measuring part is arranged at the end part of the probe switching section 6 far away from the connecting section 5. The pressure measuring part comprises a total pressure probe 7 and a static pressure probe 8, and the pressure sensing ends of the total pressure probe 7 and the static pressure probe 8 are positioned on the same cross section. The total pressure probe 7 and the static pressure probe 8 are connected with a measuring pipeline 10, and the measuring pipeline 10 is fixedly wound with a piston rod of the servo electric cylinder 2 through the probe switching section 6. The free end of the measuring pipeline 10 is connected with a balance weight 12 outside the wind tunnel through a pulley block mechanism 13.
In the embodiment, the ear seat 16 and the tail support 9, the tail support 9 and the wind tunnel wall plate 15, the servo electric cylinder 2 and the main support 11, and the main support 11 and the wind tunnel wall plate 15 are all connected by pins and screws, so as to ensure the reliability of the connection and positioning. And flow guide structures (not shown in the figure) are processed on the supporting structures such as the tail support 9 and the main support 11 so as to reduce the interference on the flow field in the wind tunnel. The wind tunnel wall plate 15 is four blocks of upper, lower, left and right (only the right wind tunnel wall plate 15 is shown in the drawing). The measuring pipeline 10 winds around a piston rod of the servo electric cylinder 2 for one circle (the damping can be increased, and the swing of the measuring pipeline 10 is obviously reduced), passes through a wind tunnel wall plate 15 through a plurality of pulley blocks, is led out of the wind tunnel and is connected with a balance weight 12. The piston rod of the servo electric cylinder 2 is in threaded connection with the connecting section 5 in the axial direction, and meanwhile, the piston rod of the servo electric cylinder 2 and the connecting section 5 are located in the circumferential direction through screws and pins. The axial direction of the connecting section 5 and the probe switching section 6 adopts 8 screws for tensioning connection, and the circumferential directions of the connecting section 5 and the probe switching section 6 are positioned through flat keys. The total pressure probe 7 and the static pressure probe 8 are connected and positioned with the probe switching section 6 through flat keys and radial screws and pins. The pulley block mechanism 13 is composed of three pulleys, two of which are located outside the wind tunnel, and one of which is mounted on the main support 11.
When the single-point displacement measuring device is used, the tail support 9 and the main support 11 are fixedly arranged on the side wall of the wind tunnel wall plate 15, and the tail support 9 and the main support 11 are convenient for the installation and fixation of the actuating mechanism. The actuating mechanism adopts the servo electric cylinder 2, and the specification of the servo electric cylinder 2 is properly increased, so that the stability of the actuating mechanism in a large stroke can be increased, and the requirement of the output torque of the actuating mechanism can be met. Through the connecting section 5, the connection between the probe switching section 6 and the piston rod of the servo electric cylinder 2 is facilitated, and the connection with other flow calibration mechanisms is also facilitated. Through probe switching section 6, the installation of total pressure probe 7 and static pressure probe 8 is convenient for fixed, simultaneously, is convenient for control total pressure probe 7 and the position of static pressure probe 8 through the extension of the piston rod of control servo electronic jar 2 to the pressure data of different regions can be measured at the wind-blowing in-process of wind-tunnel. The free ends of the measuring pipelines 10 of the total pressure probe 7 and the static pressure probe 8 are connected with a balance weight 12 outside the wind tunnel through a pulley block mechanism 13, so that the balance weight 12 rises along with the measuring pipelines 10 when the piston rod of the servo electric cylinder 2 extends out, and when the piston rod of the servo electric cylinder 2 retracts, the measuring pipelines 10 can always return back toward the outside of the tunnel in a tensioning mode under the dead weight of the balance weight 12, so that the measuring pipelines 10 are always in a stressed tensioning state, and the interference of turbulent airflow in the wind tunnel is avoided. The total pressure probe 7 and the static pressure probe 8 are used for conveniently measuring the total pressure and the static pressure of the incoming flow of a key area in the wind tunnel. Compared with the existing single-point displacement measuring device, the single-point displacement measuring device has the advantages that the stroke of the actuating mechanism is increased, the measuring area is wider, the wiring structure of the measuring pipeline 10 of the device is simple, the cost is low, the wiring of the measuring pipeline 10 is close to the device, the interference of turbulent airflow in the wind tunnel to the measuring pipeline 10 is reduced, the blockage degree of the device is reduced, and the device is economical and applicable. Meanwhile, the device has the advantages of high position control precision, more reliable measurement data and convenience in operation and maintenance.
The top surface of the tail support 9 is fixedly connected with an ear seat 16 through a pin and a screw. Servo electric cylinder 2 passes through ear seat 16 and tail support 9 fixed connection, and through connecting pin 1 fixed connection between tail support 9 and the servo electric cylinder 2.
In this embodiment, the ear seat 16 and the connecting pin 1 facilitate the connection and fixation between the servo electric cylinder 2 and the tail support 9, and the installation and the disassembly are convenient.
The outer wall of the measuring pipeline 10 is sleeved with a protection pipe 18.
In the present embodiment, the protection pipe 18 is made of a high-pressure explosion-proof PVC hose. The protective tube 18 facilitates the protection of the load-bearing and wear-prone parts of the measuring line 10.
And a reinforcing rib 17 with a flow guiding function is arranged at the joint of the static pressure probe 8 and the probe switching section 6.
In this embodiment, the reinforcing ribs 17 are machined with a flow guiding structure (not shown in the figure) to reduce interference with the flow field. Through strengthening rib 17, be convenient for strengthen the installation of static pressure probe 8 fixed, strengthening rib 17 possesses the water conservancy diversion effect simultaneously, can reduce the influence of mechanism to the flow field to ensure the measurement accuracy of mechanism.
The total pressure probe 7 is cylindrical, the number of pressure sensing ports of the total pressure probe 7 is 1, and the pressure sensing ports of the total pressure probe 7 are consistent with the incoming flow direction.
In this embodiment, total pressure probe 7 is cylindricly, and total pressure probe 7's pressure sensing port is 1, and total pressure probe 7's pressure sensing port is unanimous with the incoming flow direction, is convenient for ensure total pressure probe 7 and carry out accurate measurement to the total pressure of the incoming flow in the wind-tunnel, reduces its interference to the flow field.
The static pressure probe 8 is wedge-shaped, and the pressure sensing ports of the static pressure probe 8 are perpendicular to the incoming flow direction and are circumferentially arranged into 8.
In this embodiment, the static pressure probe 8 is in a wedge shape, and the pressure sensing ports of the static pressure probe 8 are perpendicular to the incoming flow direction and are circumferentially arranged in 8, so as to reduce the interference to the flow field while ensuring that the static pressure probe 8 accurately measures the static pressure of the incoming flow in the wind tunnel.
The motor line 3 of the servo electric cylinder 2 is attached to the outer wall of the servo electric cylinder 2 and the supporting plate, and the outer wall of the motor line 3 of the servo electric cylinder 2 is sleeved with the protective cover 4.
In this embodiment, the motor wire 3 of the servo electric cylinder 2 is protected by the protective cover 4.
The measuring pipeline 10 penetrates through the wind tunnel wall plate 15 and is led out of the wind tunnel, and a wear-resistant sliding sleeve 14 is installed at the position where the measuring pipeline 10 penetrates through the wind tunnel wall plate 15.
In this embodiment, through wear-resisting sliding sleeve 14, in the process that the actuating mechanism stretches out and draws back, be convenient for measuring pipeline 10 to follow the action of actuating mechanism and carry out relative displacement, reduce the wearing and tearing of measuring pipeline 10.
Example 2: a wiring method for a wind tunnel supersonic flow correction large stroke single point displacement measuring device is shown in FIG. 7, and comprises the following steps:
s1, mounting the protection tube 18, and enabling the 2 measurement pipelines 10 connected with the total pressure probe 7 and the static pressure probe 8 to penetrate through the protection tube 18 to ensure that the measurement pipelines 10 bear and wear parts of the protection tube 18, wherein the protection tube 18 is smooth in surface, wear-resistant and rigid.
S2, determining the pipeline wiring position of the single-point movement measuring device, drilling a wiring hole on the wind tunnel wall plate 15, and installing the wear-resistant sliding sleeve 14 and the pulley block mechanism 13.
S3, pipeline wiring, namely winding a measuring pipeline 10 connected with the total pressure probe 7 and the static pressure probe 8 on the outer wall of a piston rod of the servo electric cylinder 2 for a circle, then leading the measuring pipeline 10 out of the wind tunnel through a wire hole drilled in a wind tunnel wall plate 15 by a pulley block mechanism 13, and binding the measuring pipeline 10 with a balance weight 12 outside the wind tunnel, wherein the balance weight 12 has sufficient moving space in the stroke of the servo electric cylinder 2, and the balance weight 12 is not in contact with other objects.
S4, fixing the measuring pipeline 10 wound on the outer wall of the piston rod of the servo electric cylinder 2 by adopting an iron wire, and ensuring that the measuring pipeline 10 cannot bear load.
And S5, carrying out no-load and test load debugging, and optimizing the mass of the balance weight 12 and the fixed position of the iron wire according to the results of the no-load and test load debugging, so as to ensure the working reliability of the single-point moving and measuring device.
The working principle is as follows: when the single-point displacement measuring device is used, the tail support 9 and the main support 11 are fixedly arranged on the side wall of the wind tunnel wall plate 15, and the actuating mechanism is fixedly arranged on the tail support 9 and the main support 11. The servo electric cylinder 2 is adopted as an actuating mechanism, and the specification of the servo electric cylinder 2 is properly increased, so that the stability of the actuating mechanism in a large stroke can be increased, and the requirement of the output torque of the actuating mechanism can be met. Through the connecting section 5, the connection between the probe switching section 6 and the piston rod of the servo electric cylinder 2 is facilitated, and the connection with other flow calibration mechanisms is also facilitated. Through probe switching section 6, the installation of total pressure probe 7 and static pressure probe 8 is convenient for fixed, simultaneously, is convenient for control total pressure probe 7 and the position of static pressure probe 8 through the extension of the piston rod of control servo electronic jar 2 to the pressure data of different regions can be measured at the wind-blowing in-process of wind-tunnel. The free ends of the measuring pipelines 10 of the total pressure probe 7 and the static pressure probe 8 are connected with a balance weight 12 outside the wind tunnel through a pulley block mechanism 13, so that the balance weight 12 rises along with the measuring pipelines 10 when the piston rod of the servo electric cylinder 2 extends out, and when the piston rod of the servo electric cylinder 2 retracts, the measuring pipelines 10 can always return back toward the outside of the tunnel in a tensioning mode under the dead weight of the balance weight 12, so that the measuring pipelines 10 are always in a stressed tensioning state, and the interference of turbulent airflow in the wind tunnel is avoided. The total pressure probe 7 and the static pressure probe 8 are used for conveniently measuring the total pressure and the static pressure of the incoming flow of a key area in the wind tunnel. Compared with the existing single-point displacement measuring device, the single-point displacement measuring device has the advantages that the stroke of the executing mechanism is increased, the distance from the traditional 1.6m to the traditional 2.8m is increased, the measuring area is wider, the wiring structure of the measuring pipeline 10 of the device is simple, the cost is low, the wiring of the measuring pipeline 10 is close to the device, the interference of turbulent airflow in the wind tunnel to the measuring pipeline 10 is reduced, the blockage degree of the device is reduced to 4.1% from the former 5.7%, and the device is economical and applicable. Meanwhile, the device has the advantages of high position control precision, more reliable measurement data and convenience in operation and maintenance.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. A single-point displacement measuring device for wind tunnel supersonic flow correction large stroke is characterized in that: the wind tunnel wall plate wind tunnel comprises a wind tunnel wall plate (15), a tail support (9), a main support (11), an actuating mechanism and a pressure measuring part, wherein the tail support (9) and the main support (11) are fixedly connected with the wind tunnel wall plate (15), the actuating mechanism is a servo electric cylinder (2), the servo electric cylinder (2) is fixed on the tail support (9) and the main support (11), and a piston rod of the servo electric cylinder (2) is close to the main support (11); the end part of a piston rod of the servo electric cylinder (2) is fixedly connected with a connecting section (5); the end part of the connecting section (5) far away from the servo electric cylinder (2) is connected with a probe switching section (6); the pressure measuring part is arranged at the end part of the probe switching section (6) far away from the connecting section (5); the pressure measuring part comprises a total pressure probe (7) and a static pressure probe (8), and the pressure sensing ends of the total pressure probe (7) and the static pressure probe (8) are positioned on the same cross section; the total pressure probe (7) and the static pressure probe (8) are connected with a measuring pipeline (10), and the measuring pipeline (10) is fixedly wound with a piston rod of the servo electric cylinder (2) through the probe switching section (6); the free end of the measuring pipeline (10) is connected with a balance weight (12) outside the wind tunnel through a pulley block mechanism (13).
2. The single point displacement measuring device for wind tunnel supersonic flow correction stroke according to claim 1, wherein: the top surface of the tail support (9) is provided with an ear seat (16); the servo electric cylinder (2) is fixedly connected with the tail support (9) through the ear seat (16), and the tail support (9) is connected with the servo electric cylinder (2) through the connecting pin shaft (1).
3. The single point displacement measuring device for wind tunnel supersonic flow correction stroke according to claim 1, wherein: the outer wall of the measuring pipeline (10) is sleeved with a protection pipe (18).
4. The single point displacement measuring device for wind tunnel supersonic flow correction stroke according to claim 1, wherein: and a reinforcing rib (17) with a flow guiding function is arranged at the joint of the static pressure probe (8) and the probe switching section (6).
5. The single point displacement measuring device for wind tunnel supersonic flow correction stroke according to claim 1, wherein: the total pressure probe (7) is cylindrical, the number of pressure sensing ports of the total pressure probe (7) is 1, and the pressure sensing ports of the total pressure probe (7) are consistent with the incoming flow direction.
6. The single point displacement measuring device for wind tunnel supersonic flow correction stroke according to claim 1, wherein: the static pressure probe (8) is wedge-shaped, and the pressure sensing ports of the static pressure probe (8) are perpendicular to the incoming flow direction and are circumferentially arranged in 8.
7. The single point displacement measuring device for wind tunnel supersonic flow correction stroke according to claim 1, wherein: the servo electric cylinder is characterized in that a motor wire (3) of the servo electric cylinder (2) is attached to the outer wall of the servo electric cylinder (2) and a supporting plate, and a protective cover (4) is sleeved on the outer wall of the motor wire (3) of the servo electric cylinder (2).
8. The single point displacement measuring device for wind tunnel supersonic flow correction stroke according to claim 1, wherein: the measuring pipeline (10) penetrates through the wind tunnel wall plate (15) and is led out of the wind tunnel, and a wear-resistant sliding sleeve (14) is arranged at the position where the measuring pipeline (10) penetrates through the wind tunnel wall plate (15).
9. A wiring method for a wind tunnel supersonic flow correction large stroke single point displacement measuring device is characterized by comprising the following steps: the method comprises the following steps:
s1, mounting a protection pipe (18), and enabling a measurement pipeline (10) connected with the total pressure probe (7) and the static pressure probe (8) to penetrate through the protection pipe (18) to ensure that the measurement pipeline (10) bears and wears a part of the protection pipe (18), wherein the surface of the protection pipe (18) is smooth, wear-resistant and rigid;
s2, determining the pipeline wiring position of the single-point movement measuring device, drilling a wiring hole on a wind tunnel wall plate (15), and installing a wear-resistant sliding sleeve (14) and a pulley block mechanism (13);
s3, pipeline wiring, namely winding a measuring pipeline (10) connected with a total pressure probe (7) and a static pressure probe (8) on the outer wall of a piston rod of the servo electric cylinder (2) for a circle, then leading the measuring pipeline (10) out of the wind tunnel through a wire routing hole drilled in a wind tunnel wall plate (15) by a pulley block mechanism (13), and binding the measuring pipeline (10) with a balance weight (12) outside the wind tunnel, wherein the balance weight (12) has sufficient moving space in the stroke of the servo electric cylinder (2);
s4, fixing the measuring pipeline (10), and fixing the measuring pipeline (10) wound on the outer wall of the piston rod of the servo electric cylinder (2) by adopting an iron wire to ensure that the measuring pipeline (10) cannot bear load;
and S5, carrying out no-load and test load debugging, and optimizing the mass of the balance weight (12) and the fixed position of the iron wire according to the results of the no-load and test load debugging, thereby ensuring the working reliability of the single-point moving measuring device.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486163A (en) * | 2022-04-18 | 2022-05-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Large wind tunnel moving measuring device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0083296A2 (en) * | 1981-12-28 | 1983-07-06 | DEUTSCHE FORSCHUNGSANSTALT FÜR LUFT- UND RAUMFAHRT e.V. | Tail strut balance to determine the wind force on wind channel models |
| AU2001268170A1 (en) * | 2000-06-08 | 2001-12-17 | Merck & Co., Inc. | Process for the synthesis of (2r, 2-alpha-r, 3a)-2-(1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3- (4-fluorophenyl)-1,4-oxazine |
| CA2515069A1 (en) * | 2003-02-03 | 2004-08-19 | Indian Institute Of Science | Method for measurement of gas flow velocity, method for energy conversion using gas flow over solid material, and device therefor |
| JP2004301652A (en) * | 2003-03-31 | 2004-10-28 | Kawasaki Heavy Ind Ltd | Method of adjusting nozzle shape of ultrasonic wind tunnel facility |
| JP2004354290A (en) * | 2003-05-30 | 2004-12-16 | Kawasaki Heavy Ind Ltd | Wind tunnel model support device |
| CN102692312A (en) * | 2012-06-19 | 2012-09-26 | 哈尔滨工业大学 | Quasi-three-dimensional automatic measurement system for wind tunnels of atmospheric boundary layer |
| CN103728090A (en) * | 2014-01-17 | 2014-04-16 | 中国航空工业集团公司哈尔滨空气动力研究所 | Large wind tunnel large-stroke axial reciprocation shift measuring device and testing method thereof |
| US20150346051A1 (en) * | 2014-06-03 | 2015-12-03 | Garth L. Magee | MEASUREMENT of VEHICLE DRAG in a WIND TUNNEL |
| CN108593251A (en) * | 2018-07-03 | 2018-09-28 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of probe rides and movable measuring device measuring the flowing of cell wall near-wall region |
| CN109696288A (en) * | 2018-12-03 | 2019-04-30 | 中国辐射防护研究院 | A kind of simulation tests in environment wind tunnel device and its experiment detection method |
| CN110793745A (en) * | 2019-12-04 | 2020-02-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Supersonic wind tunnel flow calibration and measurement pressure hose protection device |
| CN212275200U (en) * | 2020-07-27 | 2021-01-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Large-stroke single-point displacement measuring device for wind tunnel supersonic flow correction |
-
2020
- 2020-07-27 CN CN202010731783.6A patent/CN111829749A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0083296A2 (en) * | 1981-12-28 | 1983-07-06 | DEUTSCHE FORSCHUNGSANSTALT FÜR LUFT- UND RAUMFAHRT e.V. | Tail strut balance to determine the wind force on wind channel models |
| AU2001268170A1 (en) * | 2000-06-08 | 2001-12-17 | Merck & Co., Inc. | Process for the synthesis of (2r, 2-alpha-r, 3a)-2-(1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3- (4-fluorophenyl)-1,4-oxazine |
| CA2515069A1 (en) * | 2003-02-03 | 2004-08-19 | Indian Institute Of Science | Method for measurement of gas flow velocity, method for energy conversion using gas flow over solid material, and device therefor |
| JP2004301652A (en) * | 2003-03-31 | 2004-10-28 | Kawasaki Heavy Ind Ltd | Method of adjusting nozzle shape of ultrasonic wind tunnel facility |
| JP2004354290A (en) * | 2003-05-30 | 2004-12-16 | Kawasaki Heavy Ind Ltd | Wind tunnel model support device |
| CN102692312A (en) * | 2012-06-19 | 2012-09-26 | 哈尔滨工业大学 | Quasi-three-dimensional automatic measurement system for wind tunnels of atmospheric boundary layer |
| CN103728090A (en) * | 2014-01-17 | 2014-04-16 | 中国航空工业集团公司哈尔滨空气动力研究所 | Large wind tunnel large-stroke axial reciprocation shift measuring device and testing method thereof |
| US20150346051A1 (en) * | 2014-06-03 | 2015-12-03 | Garth L. Magee | MEASUREMENT of VEHICLE DRAG in a WIND TUNNEL |
| CN108593251A (en) * | 2018-07-03 | 2018-09-28 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of probe rides and movable measuring device measuring the flowing of cell wall near-wall region |
| CN109696288A (en) * | 2018-12-03 | 2019-04-30 | 中国辐射防护研究院 | A kind of simulation tests in environment wind tunnel device and its experiment detection method |
| CN110793745A (en) * | 2019-12-04 | 2020-02-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Supersonic wind tunnel flow calibration and measurement pressure hose protection device |
| CN212275200U (en) * | 2020-07-27 | 2021-01-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Large-stroke single-point displacement measuring device for wind tunnel supersonic flow correction |
Non-Patent Citations (1)
| Title |
|---|
| 由亮: "风洞流场品质移动测量支架的研制", 中国优秀硕士学位论文全文数据库工程科技II辑, no. 2, 15 February 2018 (2018-02-15) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486163A (en) * | 2022-04-18 | 2022-05-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Large wind tunnel moving measuring device |
| CN114486163B (en) * | 2022-04-18 | 2022-06-17 | 中国空气动力研究与发展中心高速空气动力研究所 | Large wind tunnel moving measuring device |
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