KR101962070B1 - Apparatus of connection pipe having gage for measuring gas pressure - Google Patents

Abstract

The present invention relates to a gas connection pipe apparatus, including: a frame unit in which one side is connected with a gas supply stage so that gas is inserted therein and which has a body having a pipeline therein and allowing the inserted gas to flow; a piston unit having fluid resistance about pressure of the gas inserted into the frame unit to flow by a prescribed distance along the pipeline; a revolving unit having a prescribed rotation opening and fixed so as to rotate at one surface of the piston unit; and an elasticity unit providing elastic force to the piston unit in a case that the piston unit flows in accordance with the pressure of the gas.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas connecting pipe having a gas pressure measuring gauge,

The present invention relates to a gas connector device. More specifically, a gas pressure gauge is provided in the gas connection tube device, and the gas pressure gauge is equipped with a universal gas pressure gauge which allows the gas flow area to be adjusted appropriately so that it can be suitably applied to various gas pressures Gas connection device.

In the case of gas torches used for welding, cutting, etc. using gas and oxygen, it is a device that is used in ships and other construction sites.

In such a gas torch, a flame flame is generated, and a metal product is cut or welded by using the high heat. In this process, there is a problem that large and small fire occurs due to gas leakage and the presence of flame.

In the case of an apparatus necessary for such a series of operations, there are a gas and an oxygen supplying stage for supplying gas and oxygen, and a hose for supplying gas and oxygen from the supplying stage to the gas torch. From these gas supplying stages, There is a possibility that gas leakage may occur.

In order to prevent the above-described safety accident, it is a reality that gas leakage which can be generated in this way is required to recognize the gas leakage in advance and take measures such as shutting off the gas.

Gas leakage can occur anywhere from the gas supply end to the end of the gas torch. To measure the gas leakage, it is necessary to measure at the gas supply end itself and to report the result to the user or manager It is most effective.

There are various patent documents on technical trial and development.

As a related prior art document, for example, there is a "gas leakage detecting apparatus (Japanese Patent Laid-Open No. 1995-310900, hereinafter referred to as patent document 1).

In the case of Patent Document 1, the automatic opening / closing valve means provided in the middle of the gas supply path automatically closes the valve opening valve depending on whether or not gas consumption is on the downstream side. The pressure detecting means of Patent Document 1 detects the pressure on the downstream side of the automatic opening and closing valve means and compares the detected pressure with a predetermined value predetermined by the comparing means of the judging means, It is judged that there is a possibility that gas leakage occurs when the number of times the detection pressure becomes equal to or larger than the predetermined value is equal to or smaller than the predetermined number. In the case of Patent Document 1, the diaphragm is displaced by the difference between the gas pressure on the upstream side and the gas pressure on the downstream side of the automatic opening / closing valve means, and the diaphragm is displaced by the connecting member of the valve body drive means for connecting the diaphragm and the valve body To the valve body, discloses a technical idea in which the diaphragm is biased by the elastic member in a direction against the differential pressure.

Another related prior art patent is "Gas Safety Gauge Valve (No. 20-2016-0001352, hereinafter referred to as Patent Document 2)".

In the case of Patent Document 2, it relates to a gas safety gauge valve comprising: a valve body tube; A gas moving tube connected to the valve body tube with different diameters of the gas discharging holes, the gas moving tube having at least three gas discharging holes formed at regular intervals along the circumferential surface of the circumferential surface; A moving part installed in a gas discharge hole of the gas moving tube and adapted to move according to a gas moving amount due to a difference in gas pressure; A gauge tube inserted into the outside of the moving part and connected to the valve body tube, wherein a transparent window is provided on the circumferential surface corresponding to the gas discharging hole; And a spring interposed between the front surface of the moving part and the inside of the gas moving tube.

Similarly, another related prior art document is an example of a " gas leakage safety gauge capable of confirming a gas leakage (Registration No. 10-1845372, hereinafter referred to as Patent Document 3).

In the case of Patent Document 3, it relates to a gas leakage safety gauge capable of confirming a gas leakage.

In the case of Patent Document 3, the first side is a straight tubular member having both ends opened, a gas moving pipe whose one end is connected to the socket portion provided in the manifold; A gas discharge hole formed at one side of the gas moving pipe so as to pass through the inside and outside of the moving pipe 100 so as to connect the inside and outside of the moving pipe; A pressure sensor disposed at least one end region of the gauge tube and the moving tube spaced apart from each other on a path through which the gas is discharged through the gas discharge hole to detect leakage of the gas; And a gas leakage confirmation unit for storing in advance a pressure range for each gas according to the position of the moving unit slidingly moving in accordance with the gas moving amount through the gas moving pipe in the storage unit, If the pressure sensor is out of the preset pressure range, it is judged that gas leaking by one of the components inside the gas leakage safety gauge capable of checking the gas leakage has occurred. The present invention provides a gas leakage safety gauge capable of confirming a gas leakage that realizes a hue unique to each gas on an LED display unit when it is determined that gas leakage has occurred.

The second aspect of Patent Document 3 is a gas moving tube, which is a straight tubular member having both ends opened and connected at one end to a socket portion provided in a manifold; A gas discharging hole formed at one side of the gas moving pipe so as to penetrate inside and outside so as to connect the inside and the outside of the moving pipe; A pressure sensor disposed at least one end region of the gauge tube and the moving tube spaced apart from each other on a path through which the gas is discharged through the gas discharge hole to detect leakage of the gas; And a gas leakage check part for storing in advance a pressure range for each gas according to the position of the moving part slidingly moving in accordance with the gas moving amount through the gas moving pipe, in the storage part, and a control part, a Peltier device, a zeotropic pigment display part, , The control unit confirms the pressure measurement value received from each pressure sensor in real time, and if there is a pressure sensor out of a predetermined pressure range, the gas leak which can check the gas leakage is leaked by one of the components inside the safety gauge It is possible to control the Peltier element so that only the surface in contact with the zeotropic pigment display portion is heated to control the hue of the zeotropic pigment display portion to realize the hue unique to each gas, To provide a safety gauge.

However, the existing inventions disclosed in these prior arts are implemented so as to be able to detect whether or not gas leakage is caused to a specific gas pressure.

In the case of gas pressure, the gas pressure which appears when 1) it is used in the gas welding, 2) the gas pressure which appears when the domestic gas is used, and 3) There has been a problem in that it is necessary to change the springs appropriately according to these specifications in order to detect the leakage of the gas in accordance with the gas pressure.

There is no such teaching or suggestion for the various types of gases, the gas pressures that appear in normal use for these gases, and the gas connection tubes that can be applied when gas leaks occur.

Japanese Laid-Open Patent Application No. 1995-310900 Publication No. 20-2016-0001352 Registration No. 10-1845372

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to solve the above problems.

First, by measuring the gas pressure, it is possible to confirm whether or not there is a phenomenon of leakage of the gas flowing at present.

Second, the gas pressure depends on the flowing gas and may vary depending on the conditions of the site to be used. In order to provide a structure capable of having resistance to the flow gas pressure properly in accordance with this requirement.

Third, it is intended to provide a general-purpose gas pressure gauge capable of appropriately tuning in the field whether or not the pressure of the gas is normal depending on various conditions of the site.

The solution of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

The gas connection pipe apparatus equipped with the gas pressure measurement gauge according to the present invention has the following problem solution to the above-mentioned problem to be solved.

The gas connection pipe apparatus with the gas pressure measurement gauge according to the present invention includes a frame unit which is connected to a gas supply end so as to allow gas to flow therein and forms a body in which a channel is formed to allow the introduced gas to flow; A piston unit which is provided in the duct in the frame unit and has a fluid resistance with respect to a pressure of gas flowing into the frame unit by forming a predetermined through-hole to flow a predetermined distance along the duct; A revolving unit having a predetermined rotation opening and fixed to rotate on one surface of the piston unit; And an elastic unit disposed between the piston unit and the other side of the frame unit and providing an elastic force to the piston unit when the piston unit flows according to the pressure of the gas.

The frame unit of the gas connection pipe apparatus provided with the gas pressure measurement gauge according to the present invention includes: a frame body portion forming a channel for forming the gas flow path therein; And a confirmation unit formed on an outer circumferential surface of the frame body to expose the piston unit so as to confirm the flow state of the piston unit.

The revolving unit of the gas connection pipe apparatus provided with the gas pressure measurement gauge according to the present invention includes a cover body disposed on a front face of the piston unit and fixed and attached after being rotated by a predetermined angle; And a rotation opening forming a hole to penetrate the cover body portion.

The rotation opening of the gas connection pipe device provided with the gas pressure measurement gauge according to the present invention may include at least one discontinuous hole formed along the surface of the revolving unit.

The piston unit of the gas connection pipe apparatus having the gas pressure measurement gauge according to the present invention comprises: a flow body unit constituting the body of the piston unit and flowing along the inner pipe of the frame unit; And a through-hole for forming at least one opening formed in the flow body portion.

The rotation opening portion of the gas connection pipe apparatus provided with the gas pressure measurement gauge according to the present invention is arranged such that the flow rate of the gas passing through the piston unit is proportional to a region where the hole is common with the through- And a second determination step.

A gas connection pipe apparatus equipped with a gas pressure measurement gauge according to the present invention includes: a bolt portion inserted through the predetermined rotation opening portion of the revolving unit and the through opening portion of the piston unit; And a nut unit fastened to one end of the bolt unit to pressurize the revolving unit and the piston unit to prevent any rotation of the revolving unit.

The gas connection pipe device provided with the gas pressure measurement gauge according to the present invention may be provided with a part of the surface of the revolving unit protruding from the face opposite to the piston unit and having a resilient pressing force toward the piston unit A pressurizing ball provided; And a depressed groove formed on a face of the piston unit facing the revolving unit, the depressed groove forming a plurality of concave grooves for inserting the pressing ball.

The gas connection pipe apparatus provided with the gas pressure measurement gauge according to the present invention having the above-described configuration provides the following effects.

First, the visually observable piston unit visually shows the position of the piston unit according to the pressure of the introduced gas through the body of the gas pressure pipe, and this effect is provided to confirm whether the flow is due to the normal gas pressure.

Second, the gas flowing along the inner duct of the frame unit, which is a gas pressure tube, differs from the basic gas pressure required depending on its type and application, and the gas pressure that can be exhibited according to normal use may also be different. The revolving unit and the piston unit There is an advantage that an appropriate flow channel can be formed in accordance with these pressure specifications.

Thirdly, the present invention provides a gas connection pipe apparatus equipped with a gas measurement gauge that can be universally applied even in accordance with a variety of gases.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially transparent perspective view illustrating a gas connection pipe apparatus provided with a gas pressure measurement gauge according to an embodiment of the present invention; FIG.
Figure 2 is an exploded perspective view of a gas connection tube device with a gas pressure measurement gauge according to various embodiments of the present invention.
FIG. 3 is a side cross-sectional view of a gas connection pipe apparatus provided with a gas pressure measurement gauge according to an embodiment of the present invention.
FIG. 4 is a partially exploded perspective view of a gas connection pipe apparatus provided with a gas pressure measurement gauge according to an embodiment of the present invention.
5 is a front view showing an example of a revolving unit and a piston unit in the configuration of a gas connection pipe apparatus provided with a gas pressure measurement gauge according to an embodiment of the present invention.

The gas connection pipe provided with the gas pressure measurement gauge according to the present invention may have various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially transparent perspective view illustrating a gas connection pipe apparatus provided with a gas pressure measurement gauge according to an embodiment of the present invention; FIG. Figure 2 is an exploded perspective view of a gas connection tube device with a gas pressure measurement gauge according to various embodiments of the present invention. FIG. 3 is a side cross-sectional view of a gas connection pipe apparatus provided with a gas pressure measurement gauge according to an embodiment of the present invention. FIG. 4 is a partially exploded perspective view of a gas connection pipe apparatus provided with a gas pressure measurement gauge according to an embodiment of the present invention. 5 is a front view showing an example of a revolving unit and a piston unit in the configuration of a gas connection pipe apparatus provided with a gas pressure measurement gauge according to an embodiment of the present invention.

The gas connection pipe apparatus having the gas pressure measurement gauge according to the present invention is configured such that the pressure of the gas flowing through the frame unit 400 between the connection pipe 10 and the tightening pipe 20 And a gas measurement gauge for determining whether the pressure of the gas is in a steady state or in which part a gas leak is generated.

First, a gas connection pipe apparatus equipped with a gas pressure measurement gauge according to the present invention is configured such that a connection pipe 10 is connected to a gas supply end (not shown), and then the supplied gas is passed through a frame unit 400 The pressure of the flowing gas is measured, and the gas pressure for the flowing gas is visually confirmed.

First, as shown in FIG. 1, the frame unit 400 forms a basic frame between the connection pipe 10 and the tightening pipe 20, and one side thereof is connected to the gas supply end, As shown in Fig.

The other side of the frame unit 400 is connected to a flexible hose or the like as described above to allow gas to flow into a terminal device such as a torch disposed at the end of a flexible hose or the like.

It is preferable that the frame unit 400 is made of a metal or plastic pipe having a cylindrical shape and the pipe passage therein is formed in a circular shape.

In the case of the inner duct of the frame unit 400, the gas flows into the body as described above, and the components to be described later may be disposed therein.

The piston unit 200, the revolving unit 100, and the elastic unit 300 can be accommodated in the frame unit 400.

First, the piston unit 200 is provided on a duct in the frame unit 400. The piston unit 200 forms a predetermined through-hole 220 to be described later. The piston unit 200 is connected to the frame unit 400 through the through- 400 and a fluid resistance against a constant gas pressure.

The piston unit 200 has a gas pressure resistance against the pressure of the flowing gas because it has a predetermined through opening 220 having a smaller cross-sectional area than the channel of the frame unit 400, 200 move a certain distance in the gas flow direction while pressing the elastic unit 300.

In the case of normal use, only the gas ejected from the end of the flexible hose is present, and in the case where gas leakage occurs in a certain portion, there exists a gas leaking through the flexible hose or the like. .

In the case of the revolving unit 100, the piston unit 200 can be disposed in a direction in which the piston unit 200 faces the gas, with the predetermined rotation opening 120 and on one side of the piston unit 200, for example, as shown in Fig. .

The elastic unit 300 is disposed between the piston unit 200 and the other side of the frame unit 400, as shown in FIGS.

The elastic unit 300 is realized by forming a spring or the like, and presses the piston unit 200 in the most expanded state under a general situation. Thereafter, when 1) the gas flows and there is no leakage of gas, the flow distance of the piston unit 200 is the longest, and the elastic unit 300 will be in the most compressed state. On the other hand, when 2) gas is introduced and gas leakage occurs, i) the flow distance of the piston unit 200 is in a state before the gas is introduced and ii) And the position of the piston unit 200 can be confirmed through the confirmation unit 420 of the frame unit 400 to be described later.

In the case of the frame unit 400, the frame body 410 and the confirmation unit 420 may be included.

First, as shown in FIGS. 1 to 3, the frame body 410 has a structure in which a channel is formed to form a gas flow path.

The frame body 410 constitutes the main body of the frame unit 400 as described above, and the main body is preferably made of a metallic material.

It is preferable that the channel body 410 is formed in a circular shape so that no resistance due to the rotation of the piston unit 200 is generated.

The length of the frame body portion 410 should be minimized and the shrinking distance of the piston unit 200 and the revolving unit 100 and the elastic unit 300 should be minimized.

It is preferable that a confirmation part 420 formed of a transparent window is formed on the outer circumferential surface of the frame body part 410.

The confirmation unit 420 is preferably made of a refractory material that is not melted or burnt due to a flame caused by a torch or the like and is sufficiently provided with a mechanical strength enough to withstand an external impact due to the flow of the piston unit 200 Do.

The confirmation unit 420 is preferably formed on the outer peripheral surface of the frame body 410 to expose the movement of the piston unit 200 so that the movement of the piston unit 200 can be visually observed.

In the case of the revolving unit 100, which is a component of the gas connection pipe apparatus provided with the gas pressure measurement gauge according to the present invention, the cover body portion 110; And a rotation opening (120).

First, in the case of the cover body 110, it is preferable that the cover body 110 is disposed in a direction facing the front face of the piston unit 400, that is, in a direction in which the gas is introduced, And can be fixedly attached after being rotated.

The cover body 110 may be formed with a rotation opening 120. The rotation opening 110 corresponds to at least one hole formed to penetrate the cover body 110.

Further, the swivel opening 120 may include one or more discontinuous holes in the stirrer formed along the surface of the revolving unit 100, as shown in Fig.

Referring to FIG. 2, in the case of the rotation opening 120, a plurality of discontinuous openings may be formed in FIG. 2 (a), and a semi-circular opening may be formed in FIG. 2 (b). In addition, in FIG. 3 (c), two openings of a size of 4 minutes and 1 can be formed to be symmetrical.

This rotation opening 120, together with the region where the opening is not formed, is able to determine the flow rate of gas flowing in accordance with the degree of commonness of the through-opening 220 of the piston unit 200.

In the case of the piston unit 200, it may include a flow body portion 210 and a through opening 220, as shown in FIG.

First, the flow body portion 210 constitutes the body of the piston unit 200 and corresponds to a structure that flows along the inner pipe of the frame unit 400. [

In other words, when the gas is introduced into the frame unit 400, the flow body 210 pushes the elastic unit 300 such as a spring in accordance with the gas pressure resistance in accordance with the pressure of the gas. This distance of retraction can be determined by the area of the common region of the self-formed through-opening 220 and the rotation opening 120 as described above, and the determination of such a common region depends on the type of self- And may be arbitrarily set in accordance with the use conditions and the like.

The through openings 220 formed in the flow body 210 may also be formed of at least one or more than two openings (see FIG. 2 (a)), as shown in FIG. It is needless to say that the shape of the semicircle (see FIG. 2 (b)) or the shape of the quarter circle (see FIG. 2 (c)) is also possible.

In FIG. 2, the rotation opening 120 and the through-hole opening 220 are shown as being coupled with each other in the same shape, but it is needless to say that these shapes may be formed to cross each other.

In the case of the rotation opening 120, as shown in FIGS. 2 and 3, the flow rate of the gas passing through the piston unit is determined in proportion to the area where the own hole is common with the through-hole 220 of the piston unit 200 And accordingly, the distance by which the flow body portion 210 flows by the gas is adjusted.

As shown in FIG. 4, in the case of the gas connection pipe apparatus having the gas pressure measurement gauge according to the present invention, it may further include a bolt portion 130 and a nut portion 230.

As described above, the revolving unit 100 is configured to be rotated from the front surface of the piston unit 200. The degree of rotation of the revolving unit 100 depends on conditions such as the pressure of the introduced gas, Since the degree of the flow rate of the gas passing through the revolving unit 100 and the piston unit 200 varies when the revolving unit 100 is rotated unintentionally, the pressure of the gas to be measured And thus there is an error in detection of gas leakage.

Therefore, in the case of the gas connection pipe apparatus provided with the gas pressure measurement gauge according to the present invention, in order to prevent unintentional rotation of the revolving unit 100, the bolt 130 is inserted into the rotation opening The nut unit 230 is fastened to one end of the bolt unit 130 and inserted into the penetration opening 220 of the piston unit 200 so that the revolving unit 100 and the piston unit 200 are coupled to each other, Respectively.

The bolt portion 130 and the nut portion 230 are engaged with each other to prevent the revolving unit 100 from unintentionally rotating from the front surface of the piston unit 200.

In the case of the gas connection pipe apparatus having the gas pressure measurement gauge according to the present invention, as shown in FIG. 5, it may further include a pressure ball 140 and a depressed groove 240.

The pressurizing ball 140 and the pressure receiving groove 240 of the gas connection pipe apparatus having the gas pressure measuring gauge according to the present invention are connected to the revolving unit 100 in the same manner as the bolt portion 130 and the nut portion 230, These are the elements that prevent random rotation.

First, the pressurized ball 140 is provided so as to protrude partially from the surface of the revolving unit 100, which faces the piston unit 200, and provides a resilient pressing force toward the piston unit 200, So that the pressurized ball 140 is partially inserted into the pressure-receiving groove 240.

5 (b), the pressure-receiving groove 240 is formed on the face of the piston unit 200 facing the revolving unit 100, and as described above, the pressing ball 140 A plurality of concave grooves are formed.

When the pressurized ball 140 is inserted into the depressed groove 240 through the partially protruding portion, the revolving unit 100 can be prevented from rotating arbitrarily. In this case, as described above, Is prevented from being arbitrarily changed.

Accordingly, the piston unit 200 retracts appropriately in accordance with the pressure of the gas to be aimed, and the user confirms whether the current gas pressure is in the normal state or the gas leakage state through the confirmation unit 420.

The scope of the present invention is defined by the claims, the parentheses used in the claims are not used for optional limitation but are used for the definite components and the description in parentheses is also interpreted as an essential component .

10: connector 20: fastening tube
100: revolving unit 110: cover body
120: rotation opening part 130: bolt part
140: pressure ball 200: piston unit
201: elastic fastening part 210:
220: Through-hole opening 230: Nut portion
240: Supported groove 300: Elastic unit
400: frame unit 410: frame body part
420:

Claims (8)

A frame unit (400) connected to the gas supply end so as to allow the gas to flow therein and forming a body in which a channel is formed to allow the introduced gas to flow;
The frame unit 400 is provided with a passage through which the gas is introduced into the frame unit 400 and has a fluid resistance against the pressure of the gas flowing into the frame unit 400, A piston unit (200) which flows;
A revolving unit (100) having a predetermined rotation opening (120) and fixed to rotate on one surface of the piston unit (200); And
An elastic unit disposed between the piston unit 200 and the other side of the frame unit 400 to provide an elastic force to the piston unit 200 when the piston unit 200 flows according to the pressure of the gas, 300)
The revolving unit (100)
A cover body 110 disposed on a front face of the piston unit 200 and fixed and attached after being rotated by a predetermined angle; And
And a rotation opening (120) forming a hole to penetrate the cover body portion (110)
The piston unit (200)
A flow body portion 210 constituting the body of the piston unit 200 and flowing along an internal conduit of the frame unit 400; And
And a through opening (220) forming at least one opening formed in the flow body portion (210)
The rotation opening (120)
At least one discontinuous hole formed along the surface of the revolving unit 100,
Wherein the flow rate of the gas passing through the piston unit (200) is determined in proportion to a region where the hole is common with the through-hole (220) of the piston unit (200).
The apparatus of claim 1, wherein the frame unit (400)
A frame body 410 for forming a channel of the gas by forming a channel therein; And
And a confirmation unit 420 formed on an outer circumferential surface of the frame body 410 to expose the piston unit 200 so as to confirm the flow state of the piston unit 200. [ .
delete delete delete delete A frame unit (400) connected to the gas supply end so as to allow the gas to flow therein and forming a body in which a channel is formed to allow the introduced gas to flow;
The frame unit 400 is provided with a passage through which the gas is introduced into the frame unit 400 and has a fluid resistance against the pressure of the gas flowing into the frame unit 400, A piston unit (200) which flows;
A revolving unit (100) having a predetermined rotation opening (120) and fixed to rotate on one surface of the piston unit (200);
An elastic unit disposed between the piston unit 200 and the other side of the frame unit 400 to provide an elastic force to the piston unit 200 when the piston unit 200 flows according to the pressure of the gas, 300);
A bolt 130 inserted through the predetermined rotation opening 120 of the revolving unit 100 and the through opening 220 of the piston unit 200; And
And a nut part 230 fastened to one end of the bolt part 130 to pressurize the revolving unit 100 and the piston unit 200 to prevent any rotation of the revolving unit 100 A gas connection pipe device.
A frame unit (400) connected to the gas supply end so as to allow the gas to flow therein and forming a body in which a channel is formed to allow the introduced gas to flow;
The frame unit 400 is provided with a passage through which the gas is introduced into the frame unit 400 and has a fluid resistance against the pressure of the gas flowing into the frame unit 400, A piston unit (200) which flows;
A revolving unit (100) having a predetermined rotation opening (120) and fixed to rotate on one surface of the piston unit (200);
An elastic unit disposed between the piston unit 200 and the other side of the frame unit 400 to provide an elastic force to the piston unit 200 when the piston unit 200 flows according to the pressure of the gas, 300);
A pressing ball 140 protruding from a face of the revolving unit 100 facing the piston unit 200 and providing a force for urging the piston unit 200 toward the piston unit 200; And
And a depressed groove 240 formed on a face of the piston unit 200 facing the revolving unit 100 and defining a plurality of concave grooves for inserting the pressing ball 140 Wherein the gas connecting tube device comprises:

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