KR101796482B1 - Diaphragmless shock tube - Google Patents

Diaphragmless shock tube Download PDF

Info

Publication number
KR101796482B1
KR101796482B1 KR1020160021635A KR20160021635A KR101796482B1 KR 101796482 B1 KR101796482 B1 KR 101796482B1 KR 1020160021635 A KR1020160021635 A KR 1020160021635A KR 20160021635 A KR20160021635 A KR 20160021635A KR 101796482 B1 KR101796482 B1 KR 101796482B1
Authority
KR
South Korea
Prior art keywords
pressure chamber
chamber
shock wave
high pressure
low
Prior art date
Application number
KR1020160021635A
Other languages
Korean (ko)
Other versions
KR20170099506A (en
Inventor
김희동
이재형
Original Assignee
(주)대주기계
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)대주기계 filed Critical (주)대주기계
Priority to KR1020160021635A priority Critical patent/KR101796482B1/en
Publication of KR20170099506A publication Critical patent/KR20170099506A/en
Application granted granted Critical
Publication of KR101796482B1 publication Critical patent/KR101796482B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
    • B01J3/08—Application of shock waves for chemical reactions or for modifying the crystal structure of substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L99/00—Subject matter not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Clinical Laboratory Science (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Measuring Fluid Pressure (AREA)
  • Pipe Accessories (AREA)

Abstract

With regard to the seam-free shock wave tube,
A high pressure chamber having a leak chamber connection hole at one side thereof; A low pressure chamber having one end inserted into the interior of the high pressure chamber; A leak chamber installed at one side of the high pressure chamber; And an opening / closing rubber fixedly installed on one side of the inside of the high-pressure chamber
It is possible to carry out the repetitive shock wave experiment easily while reducing the time and manpower required for the experiment preparation such as the diaphragm replacement and the like without generating debris or debris in the shock wave generation process.

Description

Diaphragm Shock Tube {DIAPHRAGMLESS SHOCK TUBE}

The present invention relates to a seam-free shock wave tube, and more particularly, to a seam-free shock wave tube capable of opening a low-pressure chamber through an opening / closing rubber that expands or shrinks according to a pressure of a gas filled in a leak chamber, so that debris or debris And to perform repetitive experiments without replacement of the diaphragm.

Fig. 1 is a schematic view of a general shock wave tube, and Fig. 2 is an example of a membrane of a diaphragm.

Generally, as shown in FIG. 1, the shock tube 10 has a simple structure of a high pressure chamber 11, a low pressure chamber 12, and a diaphragm 13 for separating the high pressure chamber 11 and the low pressure chamber 12.

The shock wave tube (10) is an apparatus that obtains shock waves in a low pressure tube through an instantaneous flow generated by a diaphragm (13).

The shock wave tube 10 has been developed in various forms to date, and has recently been widely used not only for aerospace but also for medical machinery.

The shock wave generated by the membrane of the diaphragm 13 in the shock wave tube 10 shown in Fig. 1 propagates in the form of a compressed wave toward the low pressure chamber 12, and when the shock wave propagates to the low pressure chamber 12, The expansion wave propagates in the chamber (11).

When these waves propagate inside the tube and are reflected at the closed end of the tube or the open end of the pipe, a very complex flow occurs.

On the other hand, since the shock wave obtained by the shock wave tube is accompanied by an instantaneous pressure and a temperature rise and propagates at a very high speed, there is a demand in recent years for an industrial demand which utilizes such a characteristic.

In the engineering applications of the shockwave tube, the strength (pressure rise) and propagation speed of the shock wave are mainly determined by the pressure ratio of the high-pressure chamber and the low-pressure chamber and the thickness of the material of the diaphragm. Therefore, So that it can be easily obtained.

The diaphragm material is made of cellophane or synthetic vinyl which is very thin to generate a weak shock wave when the working pressure ratio of the shock wave tube is low, and copper plate or iron plate may be used to generate a very strong shock wave.

As shown in Fig. 2, the diaphragm of such a diaphragm has a form such as a natural diaphragm due to a pressure difference between a high pressure plate and a low pressure plate of a shock wave tube and a forced diaphragm due to a needle or the like from the outside.

Fig. 2 (a) shows the state of the natural wave film, and Fig. 2 (b) shows the wave film by the declination.

The most important problems encountered in the application of most shockwave tubes are the problem of reproducibility of the shock wave tube process and contamination by debris or debris generated during the wave process.

FIG. 3 is a view showing debris or debris generated in the process of rupturing.

Generally, even if the pressure ratio of the shock wave tube is the same, the details of the wave propagation process will vary depending on the experiment, and it is very difficult to precisely control the wave propagation process.

In addition, debris such as debris from faults is generated, which is an important technical problem to be solved in the engineering application of the shock wave tube.

Therefore, it is troublesome to carry out new experiment after cleaning up such pollutants. Moreover, since the diaphragm can not be regenerated after the membrane, it is necessary to replace it with a new diaphragm material every time. It is becoming a limiting factor.

The following Patent Document 1 discloses an improved shock tube structure.

Korean Patent Laid-Open Publication No. 10-1994-0009116 (published May 16, 1994)

Disclosure of the Invention The present invention has been made to solve the problems of the prior art described above, and its object is to prevent generation of debris or debris in the shock wave generation process by generating shock waves without breaking the diaphragm, Time and manpower

So that the repetitive shock wave test can be performed more easily while reducing the cost of the shock absorber.

In order to accomplish the above object, according to the present invention, there is provided a seam-free shockwave pipe comprising: a high-pressure chamber having a leak chamber connection hole at one side; A low pressure chamber having one end inserted into the interior of the high pressure chamber; A leak chamber installed at one side of the high pressure chamber; And an opening / closing rubber fixedly installed on one side of the interior of the high-pressure chamber.

delete

delete

The unseparated shockwave tube according to the present invention is characterized in that a recessed portion is provided on the leakage chamber side of the opening / closing rubber.

The non-diaphragm shockwave pipe according to the present invention is characterized in that an induction member is provided at the concave portion of the opening / closing rubber.

The seawater-free shockwave tube according to the present invention is characterized in that the induction slope portion is provided at the tip of the low-pressure chamber.

According to the seawater-free shock wave tube according to the present invention, the shock wave can be generated more accurately, and the shock wave is propagated to the low-pressure chamber, so that no debris or debris is generated by the wave membrane.

Therefore, according to the seawater-free shock wave tube according to the present invention, since it is not necessary to replace the diaphragm, the time required for preparing the experiment can be greatly reduced.

Further, according to the seawater-free shock wave tube according to the present invention, it is possible to repeatedly perform the shock wave test by reusing the high-pressure chamber and the low-pressure chamber.

In addition, according to the non-segregated shockwave pipe according to the present invention, it is possible to reduce the flow generated in the process of flowing the gas of the high-pressure chamber into the low-pressure chamber and to improve the reproducibility of the shock wave generated in the low- do.

1 is a structural view of a general shock wave tube,
Fig. 2 is an example of a membrane of a diaphragm,
FIG. 3 is a view showing debris or debris generated in the process of membrane breaking,
FIG. 4 is a schematic view of a seawall-free shock wave tube according to a preferred embodiment of the present invention,
5 is a detailed view of the main part of the seawater-free shock wave tube according to the preferred embodiment
6 is a sectional view taken along line AA in Fig. 5,
FIG. 7 is a schematic view of a non-segregated shockwave tube according to another embodiment of the present invention. FIG.
FIG. 8 is a longitudinal sectional view of the main part of a seawall-free shock wave tube according to another embodiment; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown.

In the following, the terms "upward", "downward", "forward" and "rearward" and other directional terms are defined with reference to the states shown in the drawings.

FIG. 4 is a configuration diagram of a non-diaphragm shock wave tube according to a preferred embodiment of the present invention, FIG. 5 is a detailed view of a principal portion of a non-diaphragm shock wave tube according to the present preferred embodiment, and FIG. 6 is a sectional view taken along line A-A of FIG.

A seawater-free shock wave tube 100 according to a preferred embodiment of the present invention includes a high-pressure chamber 110, a low-pressure chamber 120, a leak chamber 130, and an opening / closing rubber 140.

The high-pressure chamber 110 is in a sealed state at all sides, and a high-pressure gas is filled therein.

A leak chamber connection hole 113 is formed at one side of the high-pressure chamber 110.

The low-pressure chamber 120 has a smaller diameter than the high-pressure chamber 110 and has one end inserted into the high-pressure chamber 110.

The low pressure chamber 120 is filled with a gas having a pressure lower than the pressure of the gas filled in the high pressure chamber 110.

The distal end portion of the low pressure chamber 120 inserted into the high pressure chamber 110 is spaced apart from the inner side surface of the high pressure chamber 110 and the rear end portion of the low pressure chamber 120 is drawn out of the high pressure chamber 110.

The leak chamber 130 is for operating the opening / closing rubber 140 installed inside the high pressure chamber 110 and is installed at one side of the high pressure chamber 110.

The leak chamber 130 is filled with gas having a pressure higher than that of the gas filled in the high-pressure chamber 110.

The leak chamber 130 is provided with a diaphragm or a quick opening / closing valve (not shown) for discharging the high-pressure gas filled therein.

The opening / closing rubber 140 is fixedly installed on one side of the inside of the high-pressure chamber 110 by opening / closing the tip of the low-pressure chamber 120.

The opening / closing rubber 140 is provided with a recessed portion 141 on the side of the leak chamber 130 so as to be able to shrink and expand.

The pressureless pressure Ps of the gas filled in the leak chamber 130 is larger than the pressure Ph of the gas filled in the high pressure chamber 110 according to the preferred embodiment of the present invention.

The high pressure gas filled in the leak chamber 130 acts on the concave portion 141 of the opening and closing rubber 140 through the leak chamber connecting hole 113 of the high pressure chamber 110, 140 are in an expanded state.

Therefore, the opening / closing rubber 140 in the expanded state seals the tip of the low-pressure chamber 120.

If the diaphragm of the leak chamber 130 is broken or the rapid open / close valve is opened to discharge the high-pressure gas filled in the leak chamber 130 to the outside in the non-segregated shockwave pipe 100 according to the preferred embodiment of the present invention, The pressure inside the chamber 130 is drastically lowered.

When the pressure inside the leak chamber 130 is lowered, the opening / closing rubber 140 to which the pressure of the high pressure chamber 110 is applied is contracted so that the distal end of the low pressure chamber 120 is opened, The shock wave is generated inside the low-pressure chamber 120 in the same manner as the conventional shockwave-effect pipe 10.

As described above, according to the preferred embodiment of the present invention, the low pressure chamber 120 is closed through the opening / closing rubber 140 which expands or contracts according to the pressure of the gas filled in the leak chamber 130 And open.

Therefore, when the shock wave is propagated to the low-pressure chamber 120 by opening of the opening / closing rubber 140, there is no generation of debris or debris due to the membrane.

In addition, since it is not necessary to replace the diaphragm, the time required for preparing the experiment can be greatly reduced, and the high-pressure chamber 110 and the low-pressure chamber 120 can be reused to perform repetitive shock wave experiments.

FIG. 7 is a configuration diagram of a non-diaphragm shock wave tube according to another embodiment of the present invention, and FIG. 8 is a longitudinal sectional view of a principal part of a non-diaphragm shock wave tube according to another embodiment of the present invention.

7 and 8, the induction member 150 is installed in the concave portion 141 of the opening / closing rubber 140 and the low pressure chamber 120 is formed in the low pressure chamber 120, And the guide slope portion 121 is provided at the tip end of the guide slope portion.

The induction member 150 of the seamless septum shockwave pipe 100 according to another embodiment of the present invention prevents the opening and closing rubber 140 from being excessively contracted when the pressure of the leak chamber 130 is lowered, ).

The guiding member 150 serves to guide the flow of the opening and closing rubber 140 toward the low pressure chamber 120 from the high pressure chamber 110 side when the low pressure chamber 120 is opened, .

Further, the flow of the induction member 150 from the high-pressure chamber 110 toward the low-pressure chamber 120 is stabilized, so that the reproducibility of the shock wave flow can be increased.

In addition, the guide member 150 reduces the pressure loss between the high-pressure chamber 110 and the low-pressure chamber 120.

Reference numeral 160 denotes an O-ring.

The induction slope part 121 provided at the distal end of the low pressure chamber 120 in the non-segregated shockwave tube 100 according to another embodiment of the present invention is configured such that the low pressure chamber 120 is opened from the high pressure chamber 110 at a moment when the low pressure chamber 120 is opened, The gas of the high-pressure chamber 110 moving to the chamber 120 is more smoothly guided to the low-pressure chamber 120 side.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

100: No-seawater shock wave tube
110: high pressure chamber
120: Low pressure chamber
130: leak chamber
140: Opening and closing rubber
150:

Claims (6)

delete delete delete A high pressure chamber 110 having a leak chamber connection hole 113 at one side thereof;
A low pressure chamber (120) having one end inserted into the high pressure chamber (110);
A leak chamber 130 installed at one side of the high pressure chamber 110;
And an opening / closing rubber (140) fixedly installed on one side of the inside of the high pressure chamber (110)
Wherein the opening / closing rubber (140) is provided with a recessed portion (141) on the side of the leak chamber (130). 5. The method of claim 4,
Wherein an induction member (150) is provided on a concave portion (141) of the opening / closing rubber (140). A high pressure chamber 110 having a leak chamber connection hole 113 at one side thereof;
A low pressure chamber (120) having one end inserted into the high pressure chamber (110);
A leak chamber 130 installed at one side of the high pressure chamber 110;
And an opening / closing rubber (140) fixedly installed on one side of the inside of the high pressure chamber (110)
Characterized in that the induction slope part (121) is provided at the tip end of the low-pressure chamber (120).
KR1020160021635A 2016-02-24 2016-02-24 Diaphragmless shock tube KR101796482B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160021635A KR101796482B1 (en) 2016-02-24 2016-02-24 Diaphragmless shock tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160021635A KR101796482B1 (en) 2016-02-24 2016-02-24 Diaphragmless shock tube

Publications (2)

Publication Number Publication Date
KR20170099506A KR20170099506A (en) 2017-09-01
KR101796482B1 true KR101796482B1 (en) 2017-12-01

Family

ID=59923912

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160021635A KR101796482B1 (en) 2016-02-24 2016-02-24 Diaphragmless shock tube

Country Status (1)

Country Link
KR (1) KR101796482B1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Geophysical Reseach Letters, 2014, vol. 41, no. 2, pp. 414~421*

Also Published As

Publication number Publication date
KR20170099506A (en) 2017-09-01

Similar Documents

Publication Publication Date Title
KR101796484B1 (en) Diaphragmless shock tube using a free piston system
NO20084232L (en) Procedure for suspension of rudders in wells
JP5541624B2 (en) Thin-walled stainless steel pipe expansion equipment
IE37342B1 (en) Recovery and repair of offshore pipelines
KR101796482B1 (en) Diaphragmless shock tube
CN105408562A (en) Sealing plug for closing holes in walls and the like
EP0288745A3 (en) Sealing device
KR20130100435A (en) Plugging jig for hull block leakage test
GB1498803A (en) Pipeline tool
JP4982207B2 (en) Packer
US1885896A (en) Pipe line stopper
JP6742215B2 (en) Gas stopper removing jig and gas stopper removing method using the same
CN209654837U (en) Shock type tracheae component
CN207648340U (en) A kind of device for plugging
CN206592700U (en) A kind of reusable end sealing device
JP5146755B2 (en) Pipe cutting method
JP5127326B2 (en) Stopper device in gas live pipe cutoff method
JP2005201406A (en) Repairing device of piping and piping repairing method using it
CN102729040A (en) Assembly method for water-hammer arrestor
RU2521736C2 (en) Method to manufacture and mount of high pressure main line
CN214685056U (en) Gas-liquid pressurized tensioner for pipe inner butt joint device
UA152964U (en) METHOD OF TESTING A PIPE FOR STRENGTH AND DENSITY
CN106838534A (en) A kind of reusable end sealing device
KR102203407B1 (en) Translational motion type valve and opening and closing method thereof
CN103527531A (en) Totally-sealed pressurizer

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
GRNT Written decision to grant