KR20050025236A - Resin connector fitting structure - Google Patents

Abstract

An assembling tube for connecting a resin pipe is provided to combine the pipe easily by sealing efficiently and restricting over coupling, and to reduce maintenance cost by checking connection state visibly. A resin pipe connecting tube is composed of a cylindrical resin pipe(150) passing chemicals, a connector(100) having a male screw part combined with a nut(110) by thread, a protruded part formed by extending the male screw part and an inner assembling part extended to form a staple-shaped space in a lower part of the protruded part and contain the resin pipe, and the nut composed of a female screw part combined with the male screw part and a wedged protruded part extended from the end of the female screw part to form a staple-shaped space and to store the protruded part and combined with the connector for pressing an outer surface of the resin pipe. First and second auxiliary rings(120,130) are attached or detached from the connector and the outer surface of the nut to check connection of the resin pipe.

Description

Resin Piping Connection Pipes {RESIN CONNECTOR FITTING STRUCTURE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin piping connection fastening tube structure capable of improving airtightness and easily monitoring gas leakage, and particularly, in piping equipment for distributing high-purity and highly toxic chemicals such as semiconductor manufacturing equipment. While maintaining excellent airtightness, it is possible to prevent over-coupling of the connector and nut, and to make it possible to visually determine the looseness of the connection tube due to vibrations of unknown cause. It's about structure.

In general, resin pipe connection fasteners are used in piping facilities for distributing high-purity, highly toxic chemicals such as semiconductor manufacturing equipment.

The conventional technique of such a resin piping connection fastening pipe is demonstrated briefly with reference to FIGS.

FIG. 1 illustrates a resin pipe connection fastener structure of a product of Entegris, USA, which is the most common resin pipe connection fastener structure in the field of semiconductor manufacturing equipment. In Fig. 1, reference numeral 1 denotes a flared tube or resin pipe, reference numeral 2 denotes a nut, and reference numeral 3 denotes a connector. In the piping of a semiconductor manufacturing facility, since the chemical flowing through the piping is high purity and highly toxic, the leakage of the chemical may be fatal to humans as well as the production yield of the semiconductor product. Therefore, generally, the tighter sealing of resin pipe connection fastening pipes than conventional metal connection fastening pipes has been required. As described above, in FIG. 1, the tube 1 having a little flexibility is slightly expanded by applying heat to the end of the connector 3, and the nut 2 is fastened to the connector 3. Since the connector and the nut firmly fix the tube 1, the airtightness can be improved.

The structure of the resin pipe connection fastening tube as shown in FIG. 1 has a problem of lowering airtightness due to over-coupling such that the nut 2 and the tube 1 of the connector 3 are damaged. Is generated.

In order to prevent the deterioration of the airtightness due to the over fastening of the nut 2 and the connector 3, research into changing or improving the structure of the resin pipe connection fastening pipe has been continued.

Such an example has complicatedly improved the structure of the connection fastening tube in the form as shown in Figs. 2 and 3 to improve the airtightness.

Fig. 2 is a view showing the structure of a resin pipe connection fastener made of resin commercially available from Kurabo Industries Co., Ltd. in Japan. The structure of such a resin pipe connection fastener is focused on improving airtightness.

3 is a structure such as that sold by Pilar Co., Ltd. in Japan, and disclosed in Korean Patent Publication No. 2002-92172. The structure of the resin pipe connection fastening tube disclosed in the above publication is a structure for preventing overfastening.

However, the structure of the resin pipe connection fastening tube for improving the airtightness as shown in FIG. 2 and the technique of preventing over-tightening shown in FIG. 3 generally use fastening tools to fasten the tube. Therefore, the operation of inserting a tube or the like is very difficult, and in some cases, the operation itself is impossible in the absence of a dedicated tool. In addition, since a dedicated tool must be provided, a problem arises in that the manufacturing cost is high.

In addition, since the resin pipe connection fastening pipe of the present invention is generally translucent, if the pipe leakage is detected without checking the loosening of the connection fastening pipe or the like without using a separate leak tester, the entire piping equipment is checked individually. It does not know the location of the leak. Therefore, it can be seen that a considerable cost is required for maintenance of the pipe.

Therefore, in this field, it is very important to make it possible to visually observe the loosening of the fastening state of the connection fastening pipe of piping facilities, and so on.

SUMMARY OF THE INVENTION An object of the present invention is to provide a resin pipe connection fastening pipe that can easily be fastened without using a separate dedicated tool or the like while maintaining excellent airtightness.

Another object of the present invention is to provide a resin pipe connection fastening pipe comprising a pair of auxiliary rings that can be easily and visually seen in the loosened state of the connection fastening pipe of the piping equipment.

An object of the present invention is to provide a resin pipe connection fastening tube that can reduce the manufacturing cost and maintenance cost.

Resin pipe connection fastening pipes used for piping equipment such as semiconductor manufacturing equipment according to an embodiment of the present invention,

Cylindrical resin piping that allows chemicals to pass through,

A threaded male threaded portion capable of fastening with a nut, a protrusion formed by extending the male threaded portion, and an inner coupling portion extending to form a c-space in the lower portion of the protrusiond portion and accommodating the resin pipe; Connector, and

A female screw portion formed on the inner side to be fastened against the male screw portion, and a wedge-shaped protrusion formed on the inner side of the female screw portion and extended to form a c-space to accommodate the protrusion of the connector; When coupled to the connector, characterized in that consisting of a nut that can pressurize and maintain the outer surface of the resin pipe.

In addition, the resin pipe connection fastening pipe according to the embodiment of the present invention, the first auxiliary ring which can be attached to and detached from the connector to visually monitor or observe the connection state of the resin pipe connection fastening pipe, and the nut It is preferable to further include a second auxiliary ring detachable to the outer surface of the.

In addition, the resin pipe connection fastening pipe according to an embodiment of the present invention, the first auxiliary ring formed integrally with the connector so as to visually monitor or observe the connection state of the resin pipe connection fastening pipe, and the nut It is preferable to further include a second auxiliary ring formed integrally or detachably with the outer surface.

Further, in the resin pipe connection fastening tube according to the embodiment of the present invention, since the arrow marks are formed at the center vertices of the first and second auxiliary rings, respectively, so as to face each other, the resin pipe connection fastening tube is completely made. It is preferable that the arrow display portion formed on the first auxiliary ring formed on the upper surface of the nut and the arrow display portion formed on the second auxiliary ring in the connected state maintain the fastening state in a straight line, so that the fastening state of the fastening pipe can be monitored or observed. Do.

In the resin pipe connection fastening tube according to the embodiment of the present invention, it is preferable that the arrow mark portions formed at the center apex portions of the first and second auxiliary rings are colored red or blue.

Resin pipe connection fastening pipes used in piping equipment, such as semiconductor manufacturing equipment according to another embodiment of the present invention, the cylindrical resin pipe that can pass the chemicals, etc. therein,

A threaded male threaded portion capable of fastening with a nut, a protrusion formed by extending the male threaded portion, and an inner coupling portion extending to form a c-space in the lower portion of the protrusiond portion and accommodating the resin pipe; connector,

A female screw portion formed on the inner side to be fastened against the male screw portion, and a wedge-shaped protrusion formed on the inner side of the female screw portion and extended to form a c-space to accommodate the protrusion of the connector; When coupled to the connector, a nut that can pressurize and maintain the outer surface of the resin pipe,

A pair consisting of a first auxiliary ring detachable to the connector and a second auxiliary ring detachable to the outer surface of the nut so as to visually monitor or observe the connection state of the resin pipe connection fastening pipe. It characterized in that it comprises an auxiliary ring.

Resin pipe connection fastening pipes used in piping equipment, such as semiconductor manufacturing equipment according to another embodiment of the present invention,

 Cylindrical resin piping that allows chemicals to pass through,

A threaded male threaded portion capable of fastening with a nut, a protrusion formed by extending the male threaded portion, and an inner coupling portion extending to form a c-space in the lower portion of the protrusiond portion and accommodating the resin pipe; connector,

A female screw portion formed on the inner side to be fastened against the male screw portion, and a wedge-shaped protrusion formed on the inner side of the female screw portion and extended to form a c-space to accommodate the protrusion of the connector; When coupled to the connector, a nut that can pressurize and maintain the outer surface of the resin pipe,

A pair of auxiliary comprising a first auxiliary ring integrally formed on the connector and a second auxiliary ring integrally formed on an outer surface of the nut so as to visually monitor or observe the connection state of the resin pipe connection coupling tube. And a ring.

(Example)

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 4 to 9.

Figure 4 is a detailed exploded perspective view showing the parts in detail so that the resin pipe connection fastening pipe according to the embodiment of the present invention in detail, Figure 5 is a resin according to the embodiment of the present invention shown in FIG. Fig. 6 is a plan view showing the external appearance of the fastened pipe connection fastening tube, and Fig. 6 is a sectional view of the resin pipe connection fastening tube made of the resin according to the embodiment of the present invention shown in Fig. 4, and Fig. 7 is a view shown in Fig. 4. 8 is an exploded cross-sectional view of the resin piping connection fastening tube according to the embodiment of the present invention, and FIG. 8A is a cross-sectional view of the connector 100 constituting the resin piping connection fastening tube according to the embodiment of the present invention. b) is a cross-sectional view of a first auxiliary ring inserted into a connector 100 constituting a resin pipe connection fastening tube according to an embodiment of the present invention, and FIG. 9 (a) is a resin according to an embodiment of the present invention. Cross-sectional view of the nut 110 constituting the pipe connection fastening pipe And, FIG. 9 (b) is a cross-sectional view of the second sub-ring that is inserted in the mounting nut 110 that make up the resin pipe connection pipe fastening according to an embodiment of the invention.

In Fig. 4, the resin pipe connection fastening pipe 200, which is a composite of fluororesin and engineering resin, is installed in semiconductor manufacturing equipment or piping equipment such as pharmaceuticals and foods to maintain a high chemical flow inside the piping, It is used to fasten pipes and valves to maintain airtightness.

Resin pipe connection fastening pipe 200 is largely composed of a pair of auxiliary ring (120, 130) and resin pipe 150 for visually managing the connection state of the connector 100, nut 110, fastening pipe Is done.

The detailed structure of the connection between the connector 100 and the nut 110 will be described in detail with reference to the cross-sectional view of FIG. 6 to be described later. However, the internal coupling portion of the connector 100 having the same aperture formed in the connector 100 ( The resin pipe 150 is inserted into the pipe 108 made of resin and expanded by a method such as heating, and the nut 110 is fastened to the connector 100 so that the resin pipe 150 can be hermetically connected. The resin connection pipe 200 which is present is formed.

As shown in FIG. 4, the connector 100 includes a flange 103, a body portion 105, a first auxiliary ring insertion portion 107, a screw portion 109, and an internal coupling portion of the resin pipe 150. (108) and so on.

The connector 100 may be formed as a solution inlet or outlet seam that serves as a branch of a tee shaped pipe, a manual valve, or a diaphragm valve (not shown). For example, in the case of a tee branch pipe, the flow of chemicals (solution) is diverged in a straight direction and a vertical direction, and each inlet and outlet port of the tee pipe is shown in the embodiment of the present invention. The connector 100 may be formed.

The flange 103 formed at one end of the connector 100 is formed so as to connect the flange and the flange, depending on the shape of the fastening pipe 200, or as a solution inlet or outlet to a manual valve or a tee. 100 may be integrally formed. In this case, the flange 103 may be omitted from the connector 100.

One end of the connector 100 has a male screw portion 109 formed therein to accommodate the nut 110, and an inner coupling portion which may be coupled to the resin pipe 150 inside the male screw portion 109. 108 is formed.

On the other hand, the nut 110 has a female screw portion formed therein so as to be fastened to the male screw portion 109 of the connector 100, and an internal coupling portion 108 having a resin pipe 150 formed at an end of the connector 100. ) Is inserted into and coupled to the female screw (not shown) of the nut 110 to the male screw portion 109 of the connector 110 to perform a function of firmly and hermetically fastening the resin pipe 150. do.

In general, the nut 110 has a nut protrusion 113 having a predetermined width in the first half connected to the connector 100, and a hexagon nut head 115 is formed after the nut protrusion 113. . It is formed to rotate the nut 110 using a tool or the like as in a general nut.

The airtightness of the piping installation connection by fastening the connector 100 and the nut 110 will be described in detail with reference to the cross-sectional view shown in FIG. 6 of the connection fastening pipe 200 of the present invention described later.

On the other hand, in the resin pipe connection fastening pipe 200 of the embodiment of the present invention, the first auxiliary ring 120 and the nut protrusion of the nut 110 which are detachable to the first auxiliary ring insertion portion 107 of the connector 100 ( It further comprises a pair of auxiliary ring consisting of a second auxiliary ring 130 detachable to (113).

Since the resin pipe connection fastening pipe 200 further includes the pair of auxiliary rings 120 and 130, the fastening state of the resin pipe connection fastening pipe 200 can be easily visually determined. In other words, as shown in FIG. 5, when the connector 100 and the nut 110 are fastened to maintain an optimal airtight state, the first auxiliary ring 120 is attached to the connector 100 and the first auxiliary ring 120 is attached to the connector 100. By attaching the second auxiliary ring 130 so as to be in a straight line against the first auxiliary ring, an optimum airtight state can be obtained, and the first and second auxiliary rings 120 and 130 are not aligned. If it is set to, it is for quickly recognizing that the nut 110 is loosened.

The apex portions of the first auxiliary ring 120 and the second auxiliary ring 130 include arrow display parts 121 and 131 colored in red or the like. The pair of auxiliary rings 120 and 130 will also be described in detail with reference to FIGS. 8 (b) and 9 (b).

The purpose of attaching such a pair of auxiliary rings (120, 130) to the resin pipe connection fastening pipe 200 of the already completed pipe is vibration is generated due to the pressure difference of the liquid flowing through the pipe. Due to this vibration, the nut 110 is rotated to loosen the nut 110, and by the loosening of the nut 110, leakage of toxic gas or the like from the fastening pipe 200 occurs. Of course, leaks of toxic gases and the like can be detected by various devices, but even in a production line such as a semiconductor manufacturing facility, it is very difficult to check the condition of hundreds to thousands of connection pipes. Rather than breaking the sealing of the tube 150 due to overfastening in the connection fastening pipe 200 by tightening the nut 110 of the normal fastening pipe may cause disastrous death.

In view of this point, the first auxiliary ring 120 is inserted into and attached to the main body of the connector 100, and the second auxiliary ring 130 is inserted into the outer side of the nut 110. The reason for this is that the nut 110 is visually immediately checked when the nut is loosened.

Here, each of the arrow indicators 121 and 131 colored in red at the apex of the first auxiliary ring 120 and the second auxiliary ring 130 is completely sealed because the resin pipe connection coupling pipe 200 is completely sealed. It may be attached to be opposite to each other as shown in Figure 5 so as to indicate a non-state.

The first auxiliary ring 120, which can be attached to or detached from the connector 100, may be integrally formed with the connector 120, and the second auxiliary ring 130 may also be integrally formed with the nut 110. You don't even need it.

As shown in FIG. 5, the arrow indicators 121 and 131 formed at the vertices of the first auxiliary ring 120 and the second auxiliary ring 130 are completely fastened to the connector 100 to provide the best airtightness. It is desirable to be attached so as to be as close as possible and to lie in line with one another when maintaining.

FIG. 5 is a plan view showing the external appearance of the fastening state of the resin pipe connection fastening pipe according to the present invention, and FIG. 6 is a cross-sectional view of the resin pipe connection fastening pipe cut along the cutting line A-A 'in FIG. FIG. 7 is a cross-sectional view of a jet perspective view of the resin pipe connection fastening tube shown in FIG. 4.

6 to 7 will be described in detail the connection state of the resin pipe connection connection pipe 200 made of resin. The pair of auxiliary rings 120 and 130 will be described later with reference to FIGS. 8 and 9, and only the connection structure of the resin pipe connection fastening tube will be described in detail here.

As shown in FIGS. 6 to 7, the connector 100 has a protrusion 104 formed at a front end portion of the male screw portion 109 on which a thread is formed. The lower end of the end of the protrusion 104 is formed to be slightly tapered inclined. In addition, the lower end of the protrusion 104 has a resin inner pipe coupling portion 108 is formed longer than the protrusion 104 at intervals from the protrusion 104 to form a c-shaped groove.

On the other hand, the end of the resin pipe inner coupling portion 108 is inclined or rounded so as to facilitate connection of the resin pipe 150. Since the resin piping 150 is generally a composite material of fluororesin and engineering resin, it is weak to heat, and in order to connect it to the end of the internal coupling portion 108, the resin piping is applied with a little heat to the internal coupling portion 108. By inserting in, it can be connected simply. After the resin pipe 150 is connected to the inner coupling portion 108 of the connector 100, the nut 110 is fastened to the connector 100 to firmly fix the resin pipe.

A female screw portion 117 is formed in the nut 110 to be fastened to the male screw portion 109 of the connector 100. The female threaded portion 117 is formed to be received and mated with the protrusion 104 formed at the tip of the male threaded portion 109. A lowered threaded protrusion 115 is formed at the lower end of the threaded portion. The wedge-shaped protrusion 115 is formed to be accurately inserted into the c-shaped groove formed between the protrusion 104 and the inner coupling portion 108 of the connector 100.

On the other hand, the protrusion 108 of the connector 100 is designed to be accurately inserted into the groove formed between the female threaded portion 117 and the wedge-shaped protrusion 115 of the nut 110. Such a design not only improves airtightness but also prevents overtightening of the resin pipe connection fastening pipe.

In other words, the c-shaped groove formed between the protrusion 104 and the inner coupling portion 108 of the connector 100 may receive the protrusion 115 and the resin pipe 150 formed inside the nut 110 together. It is formed to a size that can be. Therefore, when the nut 110 is fastened to the connector 100 into which the resin pipe 150 is inserted, as the nut 110 moves forward in the direction of the connector 110, a wedge-shaped protrusion formed in the nut 110 ( 115 presses the resin pipe 150 by the action of the protrusion 104 formed on the connector 100 side, thereby improving the airtightness (sealing) of the resin pipe connection coupling pipe 200. Do it. On the other hand, when the protrusion 104 formed in the connector 100 and the protrusion 115 formed in the nut 110 are fastened to each other, the protrusion 115 is formed between the inner coupling portion 108 and the protrusion 104. Since the wall surface of the groove serves as a stopper, it is possible to prevent over-coupling of the resin pipe connection fastening pipe 200.

Hereinafter, a pair of auxiliary rings 120 and 130 capable of visually monitoring the fastening state of the resin pipe connection fastening pipe 200 will be described in detail with reference to FIGS. 8 and 9.

8 (a) is a cross-sectional view of the connector 100 constituting the resin pipe connection fastening pipe according to an embodiment of the present invention, Figure 8 (b) is a resin pipe connection fastening pipe according to an embodiment of the present invention. 9 is a cross-sectional view of a first auxiliary ring inserted into a connector 100 to be configured. FIG. 9A is a cross-sectional view of a nut 110 constituting a resin pipe connection fastening tube according to an embodiment of the present invention. (b) is sectional drawing of the 2nd auxiliary ring inserted in the nut 110 which comprises the resin piping connection fastening pipe which concerns on the Example of this invention.

The cross-sectional views of the connectors and nuts shown in FIGS. 8A and 9A have already been described in detail with reference to FIGS. 6 and 7, and thus, detailed descriptions thereof will be omitted.

In FIG. 8B, the first auxiliary ring 120 inserted into the connector 100 shows a structure for additionally mounting to an already installed plumbing fixture. It will be appreciated that the first auxiliary ring 120 may be formed integrally with the.

The first auxiliary ring 120 can be inserted into the first auxiliary ring mounting part 107 formed between the main body 105 and the male threaded portion 109 of the connector 100 as shown in FIG. It has a semi-circular annular shape, the central apex of the ring includes an arrow indicator 121, and a groove is formed at an interval of about 90 degrees on the inner side, which is the first auxiliary ring mounting portion 107 of the connector 100. ) Is a groove for attaching to the linear projection 125 formed in a straight line at intervals of 90 degrees on the outer surface of the cylinder. In general, in the case of the resin pipe 150, it can be seen that the above-described linear protrusion 125 is formed at 90 degree intervals. This is to attach the first and second auxiliary rings (120, 130) to the operator as appropriate to the field of view.

The second auxiliary ring 130 has a circular annular shape or a circular annular shape in which part thereof is opened so that the second auxiliary ring 130 can be inserted into the uneven portion 113 formed on the outside of the nut 110 as shown in FIG. The central apex of the ring includes an arrow mark portion 131, and an uneven portion 133 is formed on an inner side thereof, which is a groove for mounting on the uneven portion 113 formed on the outside of the nut 110. to be. As described above, it can be seen that the outer surface of the nut 110 is formed of the nut uneven portion 113 and the hexagonal threaded portion 115. Since the inner end of the uneven portion 113 is generally blocked, it is inserted into the uneven portion 113 formed on the outer surface of the nut 110 in the direction of the connector 100 from the outside of the nut 110. As described above, the second auxiliary ring 130 may be manufactured integrally with the outer surface of the nut when the nut 110 is manufactured, if necessary.

 The arrow indicators 121 and 131 formed at the apex portions of the first and second auxiliary rings 120 and 130 described above may be disposed to face each other in a state where the resin pipe connection coupling tube 200 is completely fastened. . On the other hand, in general, since the resin pipes, the connection fastening pipes, and the like are opaque white, the state of the connection fastening pipes can be more easily monitored by coloring the arrow indicators 121, 131 in red, blue, and the like.

In other words, in the piping installation, when the connection coupling pipe 200 is arbitrarily rotated by vibration or a person, the red arrow is displaced so that the pipe is unclear or visually clearly understood. Eye management or visual monitoring of the connection fasteners of the facility is possible.

Since eye management, that is, visual management of the connection pipe becomes possible, it can be seen that maintenance costs are significantly lower.

Resin pipe connection fastening pipe according to an embodiment of the present invention can be easily carried out without using a separate dedicated tool, while maintaining excellent airtightness, there is an effect that the manufacturing cost is reduced.

The resin pipe connection tube according to the embodiment of the present invention can visually manage the connection state of the pipe that can be visually easily seen that the loosened state of the connection connection tube of the piping equipment, etc., thereby reducing the maintenance cost It can be effective.

1 is a cross-sectional view showing the structure of a conventional resin pipe connection fastening pipe,

2 is a cross-sectional view showing the structure of a resin pipe connection fastening tube modified to improve the conventional airtightness,

3 is a cross-sectional view showing the structure of another modified resin pipe connection fastening pipe for improving the conventional airtightness,

Figure 4 is a plan view showing the appearance of the resin pipe connection fastening pipe according to the embodiment of the present invention,

FIG. 5 is a cross-sectional view of a resin pipe connection coupling tube according to the embodiment of the present invention shown in FIG. 4; FIG.

FIG. 6 is an exploded perspective view of a resin pipe connection coupling tube according to the embodiment of the present invention shown in FIG. 4;

FIG. 7 is an exploded cross-sectional view of a resin pipe connection coupling tube according to the embodiment of the present invention shown in FIG. 4;

8 (a) is a cross-sectional view of the connector 100 constituting the resin pipe connection fastening tube according to the embodiment of the present invention,

8 (b) is a cross-sectional view of the first auxiliary ring inserted into the connector 100 constituting the resin pipe connection fastening pipe according to the embodiment of the present invention,

9 (a) is a cross-sectional view of a nut 110 constituting a resin pipe connection fastening tube according to an embodiment of the present invention,

FIG. 9B is a cross-sectional view of a second auxiliary ring inserted into a nut 110 constituting a resin pipe connection fastening tube according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100 connector 103 flange

104: first protrusion 107: first auxiliary ring fastening portion

108: internal coupling portion 109: male thread portion

110: nut 113: outer surface irregularities

115: hexagonal thread portion 120: first auxiliary ring

121: arrow indicator 123: inner groove portion

125: projecting portion for mounting the first auxiliary ring 130: second auxiliary ring

131: arrow display portion 133: inner groove portion

200: resin pipe connection pipe

Claims (7)

In the resin pipe connection fastening pipe used for piping facilities, such as a semiconductor manufacturing facility, Cylindrical resin piping that allows chemicals to pass through, A threaded male threaded portion capable of fastening with a nut, a protrusion formed by extending the male threaded portion, and an inner coupling portion extending to form a c-space in the lower portion of the protrusiond portion and accommodating the resin pipe; Connector, and A female screw portion formed on the inner side to be fastened against the male screw portion, and a wedge-shaped protrusion formed on the inner side of the female screw portion and extended to form a c-space to accommodate the protrusion of the connector; When coupled to the connector, a nut that can pressurize and maintain the outer surface of the resin pipe Resin pipe connection fastening pipe, characterized in that consisting of. The first auxiliary ring attachable to and detachable from the connector so as to visually monitor or observe the connection state of the resin pipe connecting fastening tube, and the second auxiliary attachable and detachable to the outer surface of the nut. Resin pipe connection fastening pipe further comprising a ring. The first auxiliary ring formed integrally with the connector so as to visually monitor or observe the connection state of the resin pipe connection fastening tube, and the first formed integrally or detachably with the outer surface of the nut. Resin pipe connection fastening pipe further comprising an auxiliary ring. The method of claim 2 or 3, wherein the center apex of the first and second auxiliary ring is formed with an arrow mark to face each other, so that the resin pipe connecting fastening tube is completely connected to the upper surface of the nut. Resin pipe connection fastening pipe, characterized in that the arrow display portion formed on the first auxiliary ring formed and the arrow display portion formed on the second auxiliary ring maintain the fastening state in a straight line to monitor or observe the fastening state of the fastening pipe. . The resin pipe connection fastening pipe according to any one of claims 2 to 4, wherein an arrow mark formed on the center vertex of the first and second auxiliary rings is colored red or blue. In the resin pipe connection fastening pipe used for piping facilities, such as a semiconductor manufacturing facility, Cylindrical resin piping that allows chemicals to pass through, A threaded male threaded portion capable of fastening with a nut, a protrusion formed by extending the male threaded portion, and an inner coupling portion extending to form a c-space in the lower portion of the protrusiond portion and accommodating the resin pipe; connector, A female screw portion formed on the inner side to be fastened against the male screw portion, and a wedge-shaped protrusion formed on the inner side of the female screw portion and extended to form a c-space to accommodate the protrusion of the connector; When coupled to the connector, a nut that can pressurize and maintain the outer surface of the resin pipe, A pair consisting of a first auxiliary ring detachable to the connector and a second auxiliary ring detachable to the outer surface of the nut so as to visually monitor or observe the connection state of the resin pipe connection fastening pipe. Secondary ring Resin pipe connection fastening pipe comprising a. In the resin pipe connection fastening pipe used for piping facilities, such as a semiconductor manufacturing facility, Cylindrical resin piping that allows chemicals to pass through, A threaded male threaded portion capable of fastening with a nut, a protrusion formed by extending the male threaded portion, and an inner coupling portion extending to form a c-space in the lower portion of the protrusiond portion and accommodating the resin pipe; connector, A female screw portion formed on the inner side to be fastened against the male screw portion, and a wedge-shaped protrusion formed on the inner side of the female screw portion and extended to form a c-space to accommodate the protrusion of the connector; When coupled to the connector, a nut that can pressurize and maintain the outer surface of the resin pipe, A pair of auxiliary comprising a first auxiliary ring integrally formed on the connector and a second auxiliary ring integrally formed on an outer surface of the nut so as to visually monitor or observe the connection state of the resin pipe connection coupling tube. ring Resin pipe connection fastening pipe comprising a.