JPH08313392A - High-pressure pipe separating/connecting device and impact wind tunnel device - Google Patents

Abstract

PURPOSE: To connect a compression pipe and a shock tube easily and make the fastening force constant. CONSTITUTION: When nut drive mechanism 2 rotatory-moves a large-sized nut 1 on a compression pipe 11, the compression pipe 11 and a shock tube 14 are both connected so as to be automatically fastened and easily connected without manual help. When the driving torque of the large-sized nut 1 by a rotating drive source 3 reaches the specified value in this connection, the rotating drive source 3 is stopped by a torque monitoring means 8, so that the fastening force of both the compression pipe 11 and shock tube 14 can be made constant. Therefore, there is no need to form the flange parts of the compression pipe 11 and shock tube 14 in large size as by the second conventional technique so as to be able to solve a problem generated in association with enlargement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention separates or connects a compression tube for moving a piston by a high temperature and high pressure source to form a high temperature and high pressure gas and a shock wave tube for accelerating a test gas by the high temperature and high pressure gas. The present invention relates to a high-pressure pipe disconnecting and connecting device and an impact wind tunnel device having the high-pressure pipe disconnecting and connecting device, and particularly to a device suitable for obtaining an impact wind tunnel in which the pipe internal pressure instantaneously reaches about 100 MPa.

[0002]

2. Description of the Related Art For connecting high-pressure pipes, a method is generally used in which flanges are provided at their connecting portions and the flanges are tightened with pretension bolts. However, an impact wind tunnel device that obtains an impact wind tunnel with a pipe internal pressure of about 100 MPa is operated several times a day, and the compression tube and the shock wave tube are separated from each other and connected each time the operation is performed several times. There is a need to.

Therefore, as a first prior art of a high-pressure pipe disconnecting / connecting device for separating and connecting a compression pipe and a shock wave pipe, T-5 owned by the California Institute of Technology in the United States is used.
There is a screw-in type that is adopted in an impact wind tunnel device, in which a pulley is rotated by driving a belt, and the compression tube and the shock wave tube are separated or connected by rotation of the pulley. As the second conventional technology,
There is a clamp type that is used for the HEG shock wind tunnel device owned by DLR (German Aerospace Research Institute) to clamp the flange of the compression tube and the flange of the shock tube.

[0004]

By the way, the connection between the compression tube and the shock wave tube of the shock wind tunnel is instantaneously 100MP.
Since the internal pressure of about a acts, it is necessary not only to connect them uniformly with a predetermined tightening force, but also to easily separate and connect them.

Among the above-mentioned disconnecting and connecting devices, the first one described in the related art uses a belt and a pulley to screw a compression tube and a shock wave tube into each other, but the tightening force is insufficient by itself. Therefore, the structure is such that a predetermined tightening force is finally obtained by manually tightening, and therefore, there is a problem that manpower is required.

In the second prior art, it is difficult to uniformly tighten the surface pressure between the flange of the compression tube and the flange of the shock wave tube due to the original structure of the clamp. As a result of not only the flanges of both pipes but also the clamp itself becoming large in order to obtain the force,
There is a problem that the driving source of the clamp becomes large, the cost becomes high, and the operating time of the clamp becomes long.

An object of the present invention is to provide, in view of the above-mentioned problems of the prior art, a high pressure pipe separating / connecting device capable of easily connecting a compression pipe and a shock wave pipe. It is another object of the present invention to provide a high-pressure pipe disconnecting and connecting device that can easily connect a compression pipe and a shock wave pipe and can obtain a predetermined fastening force for connecting both pipes. An object is to provide an impact wind tunnel device that can improve reliability.

[0008]

According to a first aspect of the present invention, a compression pipe having a piston which is moved downstream by a high temperature and high pressure source to form a desired high temperature and high pressure gas and pushes it out, and a downstream side of the compression pipe. What is claimed is: 1. A high-pressure tube separation connection device that is detachably connected to a shock wave tube that is connected to an end and that has a diaphragm that accelerates an internal test gas by a desired high-temperature high-pressure gas. It has a fastening body which is mounted on the tube so as to be rotatable around the axis and movable in the axial direction and which detachably connects the compression tube and the shock wave tube to each other, and a driving means for driving the fastening body.

In the second aspect of the present invention, the high-pressure pipe disconnecting and connecting device has fastening force monitoring means for making the fastening force of the fastening body constant, in addition to the fastening body and the driving means as described above.

Further, in a third aspect of the present invention, a compression pipe having a piston which is moved downstream by a high temperature and high pressure source to form a desired high temperature and high pressure gas and pushes it out, is connected to a downstream end of the compression pipe, And a shock wave tube having a diaphragm for accelerating the internal test gas by a desired high temperature and high pressure gas, a nozzle body connected to the downstream end of the shock wave tube and further accelerating the test gas to form a high-speed air flow, and the nozzle. A measurement chamber, which is arranged on the downstream side of the body and measures the high-speed air flow, and a vacuum tank, which is arranged on the downstream side of the measurement chamber of the nozzle body and forms a vacuum chamber, and a high pressure that detachably connects the compression tube and the shock wave tube. And a pipe separation connection device. As described above, the high-pressure pipe disconnecting and connecting device is mounted on the compression pipe so as to be rotatable about the axis and movable in the axial direction, and a fastening body that detachably connects the compression pipe and the shock wave pipe to each other. And driving means for driving the fastening body.

[0011]

According to the first aspect of the present invention, when the fastening body is on the compression pipe and is located at a position deviated from the shock wave pipe, when the compression pipe and the shock wave pipe are connected, the compression pipe and the shock wave are connected. After the tube and the tube are brought into abutting state, when the fastening body is driven in the connecting direction by the driving means, the fastening body moves over the compression tube and the shock wave tube, and the shock wave tube is fastened to the compression tube. Both compression and shock wave tubes can be connected. Therefore, since the drive means rotationally moves the rotating body on the compression tube to connect both the compression tube and the shock wave tube, as compared with the first conventional technology, the fastening is performed automatically without requiring any manpower. It can be connected easily.

Further, in the second aspect of the present invention, as described above, the driving means has the torque monitoring means, and when the driving torque of the fastening body by the driving means reaches a predetermined value, the torque monitoring means stops the driving means. Therefore, the fastening force of both the compression tube and the shock wave tube can be made constant. for that reason,
Compared with the second conventional technique, it is not necessary to form the flange portions of the compression tube and the shock wave tube in a large size, so that the problem associated with the increase in size can be solved and a large internal pressure of about 100 MPa can be endured. The fastening force that can be obtained can be reliably obtained.

According to a third aspect of the present invention, the compression tube, the shock wave tube, the nozzle body, the measurement chamber, the vacuum tank, and the high pressure tube separation / connection device as described above are provided. Since both can be automatically fastened without requiring human labor, workability is improved and reliability as an impact wind tunnel device can be improved.

[0014]

Embodiments of the present invention will be described below with reference to FIGS.

First, before describing the high-pressure tube separation / connection device of the present invention, an impact wind tunnel device using the high-pressure tube separation / connection device will be described. As shown in FIG.
A shock wave tube 14 connected to the compression tube, a nozzle 16 connected to the shock wave tube, and a high-pressure tube separation / connection device 10 are provided.

The compression pipe 11 has a piston 12 which moves in the compression pipe, and a high pressure air storage tank 13 which is arranged on the upstream side in the compression pipe and stores high pressure air. When high-pressure air is stored in the high-pressure air storage tank 13 by a high-pressure air source (not shown), the high-pressure air causes the piston 12 to move.
Moves inside the compression pipe 11 toward the downstream side as indicated by an arrow, thereby forming a high-temperature high-pressure gas having a predetermined pressure and pushing it out.

The shock wave tube 14 has one end connected to the compression tube 11 and the diaphragm 1 is connected to the compression tube 11.
5 and the inside is filled with a test gas. When the high-pressure high-pressure gas having a predetermined pressure is supplied from the compression tube 11, the shock-wave tube 14 is supplied with the high-temperature high-pressure gas to cause the diaphragm 1
5 is opened to accelerate the internal test gas to the downstream side.

The nozzle 16 has a cross-sectional shape with the smallest diameter at the connection end with the shock wave tube 14, and has a shape in which the diameter of the conduit gradually expands from there to the downstream side.
The test gas accelerated by 4 is further accelerated to generate a high-speed air flow of about Mach 10. Further, a measurement chamber 17 and a vacuum tank chamber 18 are connected to the outlet side of the nozzle 16, and the test gas that has become a high-speed air flow is measured and analyzed in the measurement chamber 17, while being stored in the vacuum tank chamber 18.

The high-pressure pipe separation / connection device 10 is for detachably connecting the compression pipe 11 and the shock wave pipe 14, and will be described in detail later.

In this shock wind tunnel device, the test gas in the shock tube 14 is made into a high-speed air flow of about Mach 10,
This is to generate almost the same airflow state as when a flying boat such as a space shuttle enters the atmosphere on the earth. Therefore, in particular, since a maximum internal pressure of 100 MPa is instantaneously applied to the connecting portion between the compression tube 11 and the shock wave tube 14, both connecting portions are tightly and uniformly tightened and connected by the high-pressure pipe separation connecting device 10. In addition, when the piston 12 moves to the downstream side in the compression pipe 11 due to the operation, it is necessary to take out the piston 12 and set it to be operable again, and to clean the inside of the compression pipe 11 etc. From the high pressure pipe separation connection device 10,
It is necessary to separate and connect the compression tube 11 and the shock wave tube 14.

As shown in FIG. 1, the high pressure pipe disconnecting and connecting device of the embodiment is roughly classified into a large nut 1 as a fastening body,
A nut driving mechanism 2 for driving the large-sized nut 1 is provided.

The large nut 1 is screwed with a threaded portion 11a formed on the flange portion of the compression pipe 11, and is mounted movably in the axial direction while rotating on the outer periphery of the compression pipe 11, and the inner stopper 1a is also provided. When it hits the inner end surface 11b of the flange portion, it does not move any further.
Therefore, the large-sized nut 1 is formed in a shape having a threaded hole (not shown) which is screwed into the threaded portion 11a on the inner circumference and an inner stopper 1a having a diameter slightly smaller than the threaded hole and abutting the inner end surface 11b. Has been done. And large nut 1
When rotating on the flange portion of the compression tube 11 in the direction of the shock wave tube 14, the screw thread is engaged with the threaded portion 14a provided on the outer circumference of the flange portion of the shock wave tube 14, so that the compression tube 11 and the shock wave tube 14 are connected to each other. In addition, the inner stopper 1a abuts the inner end surface 11b of the flange portion of the compression tube 11 to connect the compression tube 11 and the shock wave tube 14 densely and uniformly. Also large nut 1
Is rotated in the opposite direction, the threaded portion 1 of the shock wave tube 14
The compression tube 11 and the shock wave tube 14 are separated by releasing the screw engagement with 4a.

The nut drive mechanism 2 includes a rotary drive source 3 and a first gear 4 mounted on an output shaft 3a of the rotary drive source 3.
A second gear 5 meshing with the first gear 4, a transmission shaft 6 having the second gear 5 attached to one end, and a gear portion 1b of the large nut 1 attached to the other end of the transmission shaft 6. It has a drive gear 7 which meshes. Therefore, when the rotary drive source 3 is driven, the second gear 5 rotates together with the first gear 4, and the drive gear 7 also rotates accordingly, thereby rotating the large nut 1 around the axis of the compression pipe 11. , The compression tube 11 and the shock wave tube 14 are moved in the axial direction. Therefore, on the outer periphery of the large nut 1, a gear portion 1b that meshes with the drive gear 7 is formed.
Is engraved. The rotary drive source 3 is preferably a hydraulic motor, for example, because a large torque is required for finally rotating the large nut 1, but an electric motor may be used as a matter of course. Is installed on a table 9 placed near the position.

The nut drive mechanism 2 has the rotary drive source 3 and the power transmission means including the first gear 4, the second gear 5 and the drive gear 7, as well as the torque monitoring means 8. Have The torque monitoring means 8 is composed of, for example, a torque meter, and when the large nut 1 is rotated by the drive gear 7 and connects both the compression pipe 11 and the shock wave pipe 14, the tightening torque of both pipes is The drive of the rotary drive source 3 is stopped when the predetermined value is reached. The torque monitoring means 8 is directly mounted on the output shaft 3a of the rotary drive source 3 in FIG. 1, but may be mounted on an extension of the transmission shaft 6 as shown in FIG.

The high-pressure pipe disconnecting / connecting device of the embodiment has the above-mentioned structure, and its operation will be described below with reference to FIG. First, the large nut 1 is located on the compression pipe 11 at the position shown by the broken line in FIG.
When in a position away from the
In the case of connecting with, the compression tube 11 and the shock wave tube 14 are made to abut against each other, and then the large-sized nut 1 is driven in the connecting direction by the rotary drive source 3 of the nut drive mechanism 2. , The second gear 5 and the drive gear 7 rotate, and the rotation of the drive gear 7 causes the large-sized nut 1 to rotate and move over the compression pipe 11 and the shock wave tube 14, and at this time, the inner stopper of the large-sized nut 1 When 1a is rotationally moved in a state of abutting the inner end surface 11b of the flange portion of the compression tube 11, the shock tube 14 is fastened to the compression tube 11, so that the compression tube 11 and the shock wave tube 14
Both can be connected. Therefore, since the nut drive mechanism 2 rotationally moves the large nut 1 on the compression tube 11 to connect both the compression tube 11 and the shock wave tube 14, no labor is required as compared with the first conventional technique. It can be automatically fastened and easily connected.

At the time of connection, the nut driving mechanism 2 has the torque monitoring means 8 and the large nut 1 by the rotary driving source 3 is connected.
When the driving torque of (1) reaches a predetermined value, the torque monitoring means 8 stops the rotary drive source 3, so that the fastening force of both the compression tube 11 and the shock wave tube 14 can be made constant. Therefore, as compared with the second conventional technique, it is not necessary to form the flange portions of the compression tube 11 and the shock wave tube 14 in a large size, so that it is possible to solve the problem associated with the increase in size.
A fastening force capable of withstanding a large internal pressure of about 100 MPa can be reliably obtained. Moreover, since the torque monitor 8 stops the rotary drive source 3, it is possible to prevent the rotary drive source 3 from being in an overloaded operation state, and at the same time, the fastening force of the compression pipe 11 and the shock wave pipe 14 by the large-sized nut 1. Can be prevented from becoming excessive.

FIGS. 4 to 6 respectively show other embodiments of the high-pressure pipe separating / connecting device. Each of the embodiments shown in FIGS. 4 to 6 uses a limit switch as the torque monitoring means 8 of the nut drive mechanism 2. Specifically, the limit switch 81 of the embodiment shown in FIG.
A large nut 1 attached to the flange of the shock tube 14.
When the compression tube 11 and the shock wave tube 14 are fastened together, the tip surface 1c of the large nut 1 operates the switch of the limit switch 81 to stop the rotary drive source 3. Accordingly, the movement amount of the large nut 1 is monitored by the limit switch 81, and the compression pipe 11,
It is also possible to monitor both fastening forces of the shock tube 14.

The limit switch 82 of the embodiment shown in FIG.
Is the inner end surface 11b of the flange portion of the compression pipe 11.
When the large nut 1 is fastened to the compression pipe 11 and the shock wave pipe 14 and the inner stopper 1a of the large nut 1 abuts the inner end surface 11b of the compression pipe 11, the inner stopper 1a is limited. Switch 8
The rotary drive source 3 is stopped by operating the switch 2 of FIG. Therefore, the embodiment shown in FIG.
The amount of movement of the large nut 1 above is monitored to obtain a constant torque, and basically the same operational effect as the embodiment shown in FIG. 4 is obtained.

Insertion holes 11d and 14c for passing the wiring 83 of the limit switch 82 are axially provided in the flange portions of the compression tube 11 and the shock wave tube 14, respectively.

Limit switch 84 of the embodiment shown in FIG.
Are installed on the floor 85 below the shock tube 14. On the other hand, an operating piece 86 is attached to the outer peripheral portion of the shock wave tube 14 at a position corresponding to the limit switch 84, and when the shock wave tube 14 is moved with respect to the compression tube 11 by driving the large-sized nut 1, both are fastened. Operation piece 8 of shock tube 14
6 operates the limit switch 84 to stop the rotary drive source 3. Therefore, in this embodiment, by monitoring the amount of movement of the shock wave tube 14 with respect to the compression tube 11, the fastening torque of both tubes 11 and 14 is managed to be constant.

In order to smoothly move the shock wave tube 14, there is provided a rolling guide 87 that rolls on the floor 85, and when the shock wave tube 14 is moved with respect to the compression tube 11 at the time of disconnection and connection. The roller guide 87 is arranged so as not to collide with the limit switch 84.

In the illustrated embodiment described above, the state in which the nut drive mechanism 2 is installed on the base 9 and the drive gear 7 of the nut drive mechanism 2 meshes with the gear portion 1b of the large nut 1 has been shown. These nut drive mechanisms 2 can be moved as needed. FIG. 7 shows an example in which the nut drive mechanism 2 is movable. That is, although the nut driving mechanism 2 is not shown in detail in FIG. 7, it is arranged between the set position A for the large-sized nut 1 and the retracted position B distant from the set position A, or the set position A and the axis thereof. It is configured so as to be movable between the retracted side position C and the retracted side position C. In this case, the movement of the nut drive mechanism 2 can be automatically performed by a drive source such as a cylinder connected to the base 9, or the base 9 can be manually moved by a guide means (not shown) provided on the floor. In any case, after the base 9 is evacuated, the set position A is set again.
If the rotation driving source 7 of the nut driving mechanism 2 can be accurately meshed with the gear portion 1b of the large-sized nut 1, then. As described above, if the nut drive mechanism 2 is configured to be movable, the compression tube 11 and the shock wave tube 14 of the shock wind tunnel device are separated from each other, and a sufficient space for taking out the piston 12 from the compression tube 11 is secured. Since work can be done, there is no risk of impairing workability.

It should be noted that the threaded portion on the inner peripheral side of the large-sized nut 1 and the gear portion 1b on the outer peripheral side, the compression tube 11 and the threaded portion of the shock wave tube have multiple threads, and if the leads are made large, both tubes 11, 1
It is also possible to reduce the time required for disconnecting and connecting 4 in FIG. Further, in any of the illustrated embodiments, the high-pressure pipe separation connection device 1
Although 0 has been shown as an example in which it is applied between the compression tube 11 and the shock wave tube 14, it can be similarly used for the separation connection between the shock wave tube 14 and the nozzle 16.

[0034]

As described above, the claims 1 to 3 of the present invention are as follows.
According to the fourth aspect, the fastener is driven in the connecting direction by the drive means, and the shock wave tube is fastened to the compression tube, so that both the compression tube and the shock wave tube can be connected. There is an effect that it can be automatically fastened without needing and can be easily connected.

According to the second to fourth aspects, when the driving torque of the fastening body by the driving means reaches a predetermined value, the driving means is stopped by the torque monitoring means.
As a result of being able to make the fastening force of both the shock wave tubes constant, it is not necessary to form the flange portions of the compression tube and the shock wave tube in a large size, and there is an effect that the problems associated with the increase in size can be solved. Moreover, according to the third and fourth aspects, it is possible to prevent the driving means from being in an overload operation state, and it is also possible to prevent the fastening force of the compression pipe and the shock wave pipe by the fastening body from becoming excessive. This has the effect of improving the reliability of the device.

According to claims 5 to 8, the compression pipe,
Since both of the shock wave tubes can be automatically fastened without requiring human labor, workability is improved, and reliability of the shock wind tunnel device can be improved. Particularly, according to claims 6 to 8,
As a result, a fastening force capable of withstanding a large internal pressure of about 100 MPa can be reliably obtained, problems associated with automatic fastening and upsizing can be solved, and reliability as a device can be obtained, which is extremely useful in practice. effective. Further, according to claim 9, since the drive means can move between the set position with respect to the fastening body and the retracted position away from the fastening body,
A sufficient space can be secured when the compression tube and the shock wave tube of the shock wind tunnel device are separated, and there is an effect that workability is not impaired.

[Brief description of drawings]

FIG. 1 is an upper half cross-sectional view showing an enlarged main part of an embodiment of a high-pressure pipe separation / connection device of the present invention.

FIG. 2 is a schematic piping diagram showing an embodiment of an impact wind tunnel device to which the high-pressure pipe separation / connection device of the present invention is applied.

FIG. 3 is an explanatory diagram of an upper half section showing another example of installation of the torque monitoring means in the high pressure pipe disconnection connection device.

FIG. 4 is an explanatory view of a torque monitoring means in which a limit switch is attached to the shock wave tube, showing another embodiment of the high-pressure tube separation / connection device of the present invention.

FIG. 5 is an explanatory view of a torque monitoring means in which a limit switch is also attached to the compression pipe.

FIG. 6 is an explanatory view of a torque monitoring means similarly having a limit switch installed on the floor.

FIG. 7 is an explanatory view showing still another embodiment of the high-pressure pipe separation / connection device of the present invention, showing the movement of the nut drive mechanism.

[Explanation of symbols]

1 ... Large nut, 2 ... Nut drive mechanism, 8, 81, 8
2, 84 ... Torque monitoring means, 10 ... High-pressure tube separation / connection device, 11 ... Compression tube, 12 ... Piston, 14 ... Shock wave tube,
15 ... Diaphragm, 16 ... Nozzle, 17 ... Measuring chamber, 18 ... Vacuum tank chamber.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryusuke Abe 3-1-1, Saiwaicho, Hitachi-shi, Ibaraki Hitachi Ltd. Hitachi factory

Claims (9)

[Claims] 1. A compression pipe having a piston that moves downstream by a high-temperature and high-pressure source to form and push out a desired high-temperature and high-pressure gas, and a compression pipe that is connected to the downstream end of the compression pipe and that has a desired high-temperature and high-pressure gas. Is a high-pressure tube disconnecting and connecting device for detachably connecting to a shock wave tube having a diaphragm for accelerating the test gas, wherein the high-pressure tube disconnecting and connecting device is rotatable on the compression tube around the axis and in the axial direction. A fastening body that is movably mounted and that detachably connects the compression tube and the shock wave tube to each other,
A high-pressure pipe separating / connecting device comprising: a driving unit that drives the fastening body. 2. A compression pipe having a piston that moves downstream by a high-temperature and high-pressure source to form and push out a desired high-temperature and high-pressure gas, and a compression pipe that is connected to the downstream end of the compression pipe and that has the desired high-temperature and high-pressure gas. Is a high-pressure tube disconnecting and connecting device for detachably connecting to a shock wave tube having a diaphragm for accelerating the test gas, wherein the high-pressure tube disconnecting and connecting device is rotatable on the compression tube around the axis and in the axial direction. A fastening body that is movably mounted and that detachably connects the compression tube and the shock wave tube to each other,
A high-pressure pipe disconnection and connection device comprising: a driving unit that drives the fastening body, and a fastening force monitoring unit that keeps the fastening force of the fastening body constant. 3. A compression pipe having a piston that moves downstream by a high-temperature and high-pressure source to form and push out a desired high-temperature and high-pressure gas, and a compression pipe that is connected to the downstream end of the compression pipe and that has a desired high-temperature and high-pressure gas. Is a high-pressure tube disconnecting and connecting device for detachably connecting to a shock wave tube having a diaphragm for accelerating the test gas, wherein the high-pressure tube disconnecting and connecting device is rotatable on the compression tube around the axis and in the axial direction. A fastening body that is movably mounted and that detachably connects the compression tube and the shock wave tube to each other,
It has a driving means for driving the fastening body and a fastening force monitoring means for making the fastening force of the fastening body constant, and the fastening force monitoring means monitors the driving torque of the driving means and determines the predetermined fastening force. A high-pressure pipe disconnection and connection device characterized in that the driving of the fastening body is stopped when it reaches. 4. A compression pipe having a piston that moves downstream by a high-temperature and high-pressure source to form and push out a desired high-temperature and high-pressure gas, and a compression pipe that is connected to the downstream end of the compression pipe and that has the desired high-temperature and high-pressure gas. Is a high-pressure tube disconnecting and connecting device for detachably connecting to a shock wave tube having a diaphragm for accelerating the test gas, wherein the high-pressure tube disconnecting and connecting device is rotatable on the compression tube around the axis and in the axial direction. A fastening body that is movably mounted and that detachably connects the compression tube and the shock wave tube to each other,
It has a drive means for driving the fastening body, and a fastening force monitoring means for making the fastening force of the fastening body constant, and the fastening force monitoring means is a movement amount of the fastening body in the compression tube and a shock wave tube for the compression tube. And a driving amount of the fastening body is stopped when a predetermined movement amount is reached. 5. A compression pipe having a piston that moves downstream by a high-temperature and high-pressure source to form and push out a desired high-temperature and high-pressure gas, and a compression pipe that is connected to the downstream end of the compression pipe and that has a desired high-temperature and high-pressure gas. A shock wave tube having a diaphragm for accelerating the test gas, a nozzle body connected to the downstream end of the shock wave tube, further accelerating the test gas to form a high-speed airflow, and arranged on the downstream side of the nozzle body, It is arranged on the downstream side of the measurement room for measuring high-speed air flow and the measurement room for the nozzle body.
A vacuum tank forming a vacuum chamber and a high-pressure pipe disconnection connecting device that detachably connects the compression pipe and the shock wave pipe are provided, and the high-pressure pipe disconnecting connection device is rotatable on the compression pipe about an axis and in an axial direction. An impact wind tunnel device comprising: a fastening body that is movably attached to the compression tube and a shock wave tube that detachably connects the compression tube and the shock wave tube to each other; and a driving unit that drives the fastening body. 6. A compression pipe having a piston that moves downstream by a high-temperature and high-pressure source to form and push out a desired high-temperature and high-pressure gas, and a compression pipe that is connected to the downstream end of the compression pipe and that has a desired high-temperature and high-pressure gas. A shock wave tube having a diaphragm for accelerating the test gas, a nozzle body connected to the downstream end of the shock wave tube, further accelerating the test gas to form a high-speed airflow, and arranged on the downstream side of the nozzle body, It is arranged on the downstream side of the measurement room for measuring high-speed air flow and the measurement room for the nozzle body.
A vacuum tank forming a vacuum chamber and a high-pressure pipe disconnection connecting device that detachably connects the compression pipe and the shock wave pipe are provided, and the high-pressure pipe disconnecting connection device is rotatable on the compression pipe about an axis and in an axial direction. A fastening body movably attached to the compression tube and the shock wave tube so as to detachably connect to each other, a driving means for driving the fastening body, and a fastening force monitoring means for making the fastening force of the fastening body constant. An impact wind tunnel device. 7. A compression pipe having a piston that moves downstream by a high-temperature high-pressure source to form and push out a desired high-temperature high-pressure gas, and a compression pipe that is connected to the downstream end of the compression pipe and that has a desired high-temperature high-pressure gas. A shock wave tube having a diaphragm for accelerating the test gas, a nozzle body connected to the downstream end of the shock wave tube, further accelerating the test gas to form a high-speed airflow, and arranged on the downstream side of the nozzle body, It is arranged on the downstream side of the measurement room for measuring high-speed air flow and the measurement room for the nozzle body.
A vacuum tank forming a vacuum chamber and a high-pressure pipe disconnection connecting device that detachably connects the compression pipe and the shock wave pipe are provided, and the high-pressure pipe disconnecting connection device is rotatable on the compression pipe about an axis and in an axial direction. Has a fastening body that is movably mounted on the fastening tube and detachably connects the compression tube and the shock wave tube to each other, a driving means that drives the fastening body, and a fastening force monitoring means that keeps the fastening force of the fastening body constant. The fastening wind force monitoring device is characterized in that the fastening force monitoring means monitors the driving torque of the driving means and stops the driving of the fastening body when a predetermined fastening force is reached. 8. A compression pipe having a piston that moves downstream by a high-temperature and high-pressure source to form and push out a desired high-temperature and high-pressure gas, and a compression pipe that is connected to the downstream end of the compression pipe and that has the desired high-temperature and high-pressure gas. A shock wave tube having a diaphragm for accelerating the test gas, a nozzle body connected to the downstream end of the shock wave tube, further accelerating the test gas to form a high-speed airflow, and arranged on the downstream side of the nozzle body, It is arranged on the downstream side of the measurement room for measuring high-speed air flow and the measurement room for the nozzle body.
A vacuum tank forming a vacuum chamber and a high-pressure pipe disconnection connecting device that detachably connects the compression pipe and the shock wave pipe are provided, and the high-pressure pipe disconnecting connection device is rotatable on the compression pipe about an axis and in an axial direction. Has a fastening body that is movably mounted on the fastening tube and detachably connects the compression tube and the shock wave tube to each other, a driving means that drives the fastening body, and a fastening force monitoring means that keeps the fastening force of the fastening body constant. The fastening force monitoring means monitors either one of the movement amount of the fastening body in the compression tube and the movement amount of the shock wave tube with respect to the compression pipe, and drives the fastening body when the predetermined movement amount is reached. An impact wind tunnel device characterized by being stopped. 9. The driving means is configured to be movable between a set position with respect to the fastening body and a retracted position separated from the fastening body. Impact wind tunnel device.