KR20100036844A - Shock absorber of dual pipe - Google Patents

Shock absorber of dual pipe Download PDF

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Publication number
KR20100036844A
KR20100036844A KR1020080096243A KR20080096243A KR20100036844A KR 20100036844 A KR20100036844 A KR 20100036844A KR 1020080096243 A KR1020080096243 A KR 1020080096243A KR 20080096243 A KR20080096243 A KR 20080096243A KR 20100036844 A KR20100036844 A KR 20100036844A
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KR
South Korea
Prior art keywords
roller
rotating part
clamp
roller rotating
shock absorber
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KR1020080096243A
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Korean (ko)
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KR100979547B1 (en
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안상일
김형민
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(주)상수플랜트
안상일
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    • 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
    • F16L55/02—Energy absorbers; Noise absorbers
    • 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
    • F16L7/00—Supporting of pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Music (AREA)

Abstract

PURPOSE: A shock absorber of a dual-pipe is provided to protect an inner and outer pipe from external impact by using elastic reaction force of a spring which is located inside a roller rotating part. CONSTITUTION: A shock absorber of a dual-pipe comprises a pair of C-shaped clamps(5), a roller rotating part(10), and a fixing part(20). The clamp has a fixing groove and is combined with a roller which is formed between an inner pipe and an outer pipe. The roller rotating part is combined with the roller and comprises a spring(11), a supporter(12), and a latch(13). The roller rotating part is inserted in a slide groove. A fixing part has a contact face which is combined with the clamp.

Description

이중파이프의 완충장치{Shock absorber of dual pipe}Shock absorber of dual pipe

본 발명은 이중파이프의 완충장치에 관한 것으로, 보다 구체적으로는 내관과 외관으로 이루어진 이중파이프에 롤러회전부와 고정부를 형성함으로써, 열에 의해 전, 후나 좌, 우로 이동하는 내관을 외관의 외부에서 전해지는 충격을 흡수하고 완화하여 내관의 파손을 예방하기 위한 이중파이프의 완충장치에 관한 것이다.The present invention relates to a shock absorber of a double pipe, and more specifically, by forming a roller rotating part and a fixing part in a double pipe consisting of an inner tube and an outer tube, an inner tube moving before, after, left, or right by heat is transferred from the outside of the outer tube. The present invention relates to a double pipe shock absorber for absorbing and mitigating impact to prevent breakage of the inner tube.

일반적으로 사용되는 이중파이프의 완충장치는 특허등록번호 제10 - 656876호, 실용신안등록번호 제20 - 331260호와 같이 단순히 내관과 외관의 사이로 상기 내관이 전, 후나 좌, 우로 이동이 가능하도록 롤러만을 형성하여 상기 내관의 이동을 용이하도록 사용하였다.A buffer device of a double pipe which is generally used is a roller such that the inner tube can be moved to the front, back, left, or right simply between the inner tube and the exterior, as in Patent Registration No. 10-656876 and Utility Model Registration No. 20-331260. The bay was used to facilitate the movement of the inner tube.

하지만, 특허등록번호 제10 - 656876호와 같이 내관에 결합되는 클램프에 단순히 롤러만을 형성하여 내관을 전, 후나 좌, 우로 용이하게 이동시킬 수는 있으나, 외관의 외측에서 전해지는 충격을 완화시키는 탄성부재가 형성되어 있지 않아, 외부충격에 의해 외관이나 내관이 파손되는 문제점이 있었다.However, it is possible to easily move the inner tube before, after, left and right by simply forming a roller in the clamp coupled to the inner tube as in Patent Registration No. 10-656876, but to relieve the impact transmitted from the outside of the exterior. Since the member is not formed, there is a problem that the external appearance and the inner tube are damaged by the external impact.

또한, 실용신안등록번호 제20 - 331260호와 같이 롤러를 지지하는 지지부재를 고무와 같은 탄성부재를 이용하여 롤러를 지지하여 외부에서 전해지는 충격을 흡수하려고 하였으나 상기 롤러가 지지부재에 고정되어 롤러의 이동반경에 한계가 나타남으로써, 외부의 충격에 따른 내관과 외관의 파손을 예방하는 데에는 한계가 나타나는 문제점이 있었다.In addition, the utility member registration number 20-331260, the support member for supporting the roller to support the roller using an elastic member such as rubber to try to absorb the shock transmitted from the outside, but the roller is fixed to the support member to the roller As a limit appears in the radius of movement, there was a problem in that a limit appears in preventing damage to the inner tube and the exterior due to an external impact.

그리고, 내관과 외관 사이에 위치되는 롤러를 직선형태로 형성함으로써, 상기 롤러의 전체 면적이 외관에 전부 밀착되지 않고, 한 부분만이 밀착되어 롤러의 지지력이 증가되지 못하는 문제점이 있었다.Further, by forming the roller located between the inner tube and the outer shape in a straight line, the entire area of the roller is not in close contact with the outer appearance, but only one portion is in close contact with each other so that the bearing capacity of the roller is not increased.

본 발명의 이중파이프의 완충장치는 중공관 형태의 내관과 외관의 사이에 형성되되 상기 외관에 밀착되는 롤러와 내관의 외측으로 결합되며 고정홈을 형성한 'C'자 형태로 형성되는 한 쌍의 클램프와, 상기 롤러가 결합되며 내측으로 스프링이 삽입되고 받침대와 걸림쇠가 형성된 중공관형태의 롤러회전부와, 상기 롤러회전부가 삽입되며 롤러회전부의 걸림쇠가 결합되는 슬라이드홈과 클램프에 결합되는 밀착면이 형성된 중공관형태의 고정부로 이루어진다.The double pipe shock absorber of the present invention is formed between the inner tube and the outer tube of the hollow tube form is coupled to the outer surface of the roller and the inner tube is in close contact with the outer form of a pair of 'C' is formed in the form of a fixed groove The clamp, the roller is coupled, the spring is inserted into the inside of the hollow tube-shaped roller rotating part is formed, and the roller groove is inserted into the slide groove and the close contact surface coupled to the clamp is coupled It consists of a fixed part of the hollow tube shape formed.

상기에서 살펴본 바와 같이 내관과 외관의 사이에 위치되어 회전하는 롤러의 외측면을 외관과 동일한 내경으로 형성하여, 롤러의 전체 면적이 외관에 밀착되어 회전하도록 형성함으로써, 외관에 지지되는 롤러의 지지력을 증가시킬 수 있는 장점이 있다.As described above, the outer surface of the rotating roller which is located between the inner tube and the outer tube is formed to have the same inner diameter as the outer tube, and the entire area of the roller is formed to rotate in close contact with the outer tube, thereby supporting the bearing force of the roller supported on the outer tube. There is an advantage that can be increased.

그리고, 내관과 외관의 사이에 형성되어 내관을 전, 후나 좌, 우로 용이하게 이동시킬 수 있도록 롤러가 형성된 클램프에 롤러회전부와 고정부를 형성함으로써, 외부에서 전해지는 충격을 롤러회전부가 고정부의 내측에서 스프링의 탄성에 의해 용이하게 슬라이드되도록 하여, 외부충격에 따른 내관과 외관의 파손을 예방할 수 있는 장점이 있다.In addition, the roller rotating part is formed between the inner tube and the outer part so that the inner tube can be easily moved to the front, back, left, or right side by forming the roller rotating part and the fixing part, so that the impact transmitted from the outside is applied to the roller rotating part. By easily sliding by the elasticity of the spring from the inside, there is an advantage that can prevent damage to the inner tube and the appearance due to the external impact.

또한, 상기 롤러회전부에 걸림쇠가 형성되어 있어, 고정부에서 슬라이드되는 롤러회전부를 견고하게 고정시킬 수 있는 장점이 있다.In addition, since the latch is formed in the roller rotating portion, there is an advantage that can be firmly fixed to the roller rotating portion that slides in the fixed portion.

상기와 같은 목적을 달성하기 위한 본 발명의 이중파이프의 완충장치의 구성을 살펴보면 다음과 같다.Looking at the configuration of the double pipe buffer of the present invention for achieving the above object as follows.

먼저, 상기 이중파이프의 완충장치(50)는 도 1 내지 도 4에 도시된 바와 같이 중공관 형태의 내관(1)과 외관(2) 사이에 형성되되 상기 외관(2)에 밀착되는 롤러(3)와 내관(1)의 외측으로 결합되며 고정홈(4)을 형성한 'C'자 형태로 형성되는 한 쌍의 클램프(5)와 롤러회전부(10)와 고정부(20)로 이루어진다.First, the double pipe buffer 50 is formed between the inner tube 1 and the outer tube 2 in the form of a hollow tube, as shown in Figures 1 to 4, the roller 3 is in close contact with the outer tube (2) ) Is coupled to the outside of the inner tube (1) and consists of a pair of clamps (5), roller rotation portion 10 and the fixing portion 20 is formed in the 'C' shape forming a fixing groove (4).

여기서, 상기 롤러회전부(10)는 도 1에 도시된 바와 같이 상기 롤러(3)가 결합되며 내측으로 스프링(11)이 삽입되고 받침대(12)와 걸림쇠(13)가 형성된 중공관형태로 이루어진다.Here, the roller rotating part 10 is formed in the form of a hollow tube in which the roller 3 is coupled, the spring 11 is inserted inward and the pedestal 12 and the latch 13 are formed as shown in FIG. 1.

그리고, 상기 고정부(20)는 도 2에 도시된 바와 같이 상기 롤러회전부(10)가 삽입되며 롤러회전부(10)의 걸림쇠(13)가 결합되는 슬라이드홈(21)과 클램프(5)에 결합되는 밀착면(22)이 형성된 중공관형태로 이루어진다.In addition, the fixing part 20 is coupled to the slide groove 21 and the clamp 5 to which the roller rotating part 10 is inserted and the latch 13 of the roller rotating part 10 is coupled as shown in FIG. 2. It is formed in the form of a hollow tube formed with the contact surface 22 to be.

덧붙여, 도 3 내지 도 4에 도시된 바와 같이 상기 외관(2)에 밀착되는 롤러(3)의 외측면은 외관(2)의 내경(d1)과 동일하게 형성되도록 하고, 상기 클램프(5)에 밀착되는 고정부(20)의 밀착면(22)은 클램프(5)의 외경(d2)과 동일하게 형성되도록 하는 것이 바람직하다.In addition, as shown in FIGS. 3 to 4, the outer surface of the roller 3 in close contact with the outer surface 2 is formed to be the same as the inner diameter d1 of the outer surface 2, and the clamp 5 The contact surface 22 of the fixing portion 20 to be in close contact is preferably formed to be the same as the outer diameter (d2) of the clamp (5).

이하에서는 본 발명의 가장 바람직한 실시 예에 대해 설명하도록 한다.Hereinafter will be described the most preferred embodiment of the present invention.

우선, 고정부(20)의 내측으로 롤러회전부(10)를 삽입한다.First, the roller rotating part 10 is inserted inside the fixing part 20.

여기서, 상기 롤러회전부(10)에 형성된 걸림쇠(13)가 고정부(20)의 슬라이드홈(21)으로 삽입되도록 하고, 상기 롤러(3)가 결합되는 방향이 상측으로 향하도록 한다.Here, the latch 13 formed in the roller rotating part 10 is inserted into the slide groove 21 of the fixing part 20, and the direction in which the roller 3 is coupled is directed upward.

그런 후, 상기 롤러회전부(10)에 롤러(3)를 결합하고, 상기 롤러회전부(10)의 내측으로 스프링(11)을 받침대(12)가 형성된 위치까지 삽입한다.Then, the roller 3 is coupled to the roller rotating part 10, and the spring 11 is inserted into the roller rotating part 10 to a position where the pedestal 12 is formed.

또한, 상기 롤러회전부(10)와 고정부(20)가 결합되면, 상기 고정부(20)를 클램프(5)의 외측면에 사용자가 결합하고자 하는 임의의 위치에 고정부(20)의 하측에 형성된 밀착면(22)을 상기 클램프(5)에 밀착되도록 하면서 고정부(20)의 밀착 면(22)를 클램프(5)에 용접으로 결합한다.In addition, when the roller rotating part 10 and the fixing part 20 are coupled, the fixing part 20 at the lower side of the fixing part 20 at an arbitrary position that the user wants to couple to the outer surface of the clamp 5. The adhesion surface 22 of the fixing portion 20 is welded to the clamp 5 while the formed adhesion surface 22 is brought into close contact with the clamp 5.

여기서, 상기 클램프(5)에 밀착되는 고정부(20)의 밀착면(22)을 클램프(5)의 외경(d2)과 동일하게 형성함으로써, 클램프(5)에 밀착되는 고정부(20)가 클램프(5)와 공간이 발생하지 않도록 하여 고정부(20)가 클램프(5)에 견고히 고정결합되도록 한다.Here, by forming the contact surface 22 of the fixing part 20 in close contact with the clamp 5 in the same manner as the outer diameter d2 of the clamp 5, the fixing part 20 in close contact with the clamp 5 is The clamp 5 and the space do not occur so that the fixing portion 20 is firmly fixed to the clamp (5).

상기와 같은 방법으로 다수개의 롤러회전부(10)와 고정부(20)를 내관(1)과 외관(2)의 크기에 따라 클램프(5)의 임의의 위치에 다수개로 결합한다.In the same manner as described above, the plurality of roller rotating parts 10 and the fixing part 20 are coupled to a plurality of arbitrary positions of the clamp 5 according to the size of the inner tube 1 and the exterior 2.

그런 후, 상기 롤러회전부(10)와 고정부(20)가 결합된 한 쌍의 클램프(5)를 내관(1)의 외측으로 위치시켜 상기 클램프(5)에 형성된 고정홈(4)에 볼트(도면에 도시되지 않음)와 같은 결합부재(도면에 도시되지 않음)를 이용하여 내관(1)에 결합되는 클램프(5)가 내관(1)에서 미끄지지않도록 견고히 고정결합시킨다.Thereafter, the pair of clamps 5 coupled to the roller rotating part 10 and the fixing part 20 are positioned outside the inner tube 1 to fix the bolts in the fixing grooves 4 formed in the clamps 5. The clamp 5 coupled to the inner tube 1 is firmly fixed to the inner tube 1 so as not to slip in the inner tube 1 by using a coupling member (not illustrated).

그리고, 상기 클램프(5)가 결합된 내관(1)을 외관(2)의 내측으로 삽입한다.Then, the inner tube 1 to which the clamp 5 is coupled is inserted into the outer side 2.

이때, 상기 롤러회전부(10)에 결합되는 롤러(3)가 외관(2)의 내측면과 밀착되도록 하고, 상기 롤러(3)의 외측면은 일자형태가 아닌 외관(2)의 내경(d1)과 동일하도록 형성하여, 외관(2)의 내측면에서 밀착되어 회전하는 롤러(3)의 전체면적이 닿도록 하여, 롤러(3)의 지지력을 증가시키도록 한다.At this time, the roller 3 coupled to the roller rotating part 10 is to be in close contact with the inner surface of the exterior (2), the outer surface of the roller (3) the inner diameter (d1) of the exterior (2) is not a straight shape It is formed to be the same as, so that the entire area of the roller (3) in close contact with the inner surface of the outer surface (2) to touch, to increase the bearing force of the roller (3).

한편, 상기와 같이 내관(1)과 내관(1)의 외측으로 클램프(5), 롤러회전부(10), 고정부(20)를 삽입하고, 사용자가 설치하고자 하는 장소에 설치한다.Meanwhile, as described above, the clamp 5, the roller rotating part 10, and the fixing part 20 are inserted into the inner tube 1 and the outer tube 1, and are installed at a place that the user intends to install.

그런 후, 외관(2)의 외측에서 충격이 가해지게 되면, 외부충격에 의해 롤러회전부(10)의 걸림쇠(13)가 고정부(20)에 형성된 슬라이드홈(21)을 따라 내관(1)이 형성된 방향으로 이동하면서 외부에서 내관(1)으로 전해지는 충격을 완화시킨다.Then, when an impact is applied from the outside of the exterior (2), the inner tube (1) along the slide groove (21) formed in the fixing portion 20 by the clasp (13) of the roller rotation part 10 by the external impact The shock transmitted to the inner tube 1 from the outside is alleviated while moving in the formed direction.

그리고, 외부에서 전해지는 충격이 사라지게 되면, 롤러회전부(10)에 삽입된 스프링(11)에 의해 롤러(3)가 결합된 롤러회전부(10)가 원상태로 복귀하게 되는 것이다.When the impact transmitted from the outside disappears, the roller rotating unit 10 to which the roller 3 is coupled is returned to its original state by the spring 11 inserted into the roller rotating unit 10.

한편, 상기 롤러회전부(10)에는 고정부(20)의 슬라이드홈(21)에서 이동되는 걸림쇠(13)가 형성되어 있어, 스프링(11)의 탄성력에 의해 롤러회전부(10)가 고정부(20)에서 이탈되는 것을 방지하는 작용을 한다.On the other hand, the roller rotator 10 is formed with a latch 13 to be moved in the slide groove 21 of the fixing part 20, the roller rotating part 10 is fixed to the fixed part 20 by the elastic force of the spring (11) ) To prevent the departure from.

또한, 상기 롤러회전부(10)에는 받침대(12)가 형성되어 있어, 상기 롤러회전부(10)의 내측으로 삽입되는 스프링(11)이 탄성력에 의해 롤러회전부(10)의 외측으로 튀어나가지 않도록 한다.In addition, a pedestal 12 is formed in the roller rotating part 10 so that the spring 11 inserted into the roller rotating part 10 does not protrude out of the roller rotating part 10 by elastic force.

상술한 실시예는 본 발명의 가장 바람직한 예에 대하여 설명한 것이지만, 상기 실시예에만 한정되는 것은 아니며, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 다양한 변형이 가능하다는 것은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어서 명백한 것이다.Although the above-described embodiments have been described with respect to the most preferred examples of the present invention, it is not limited to the above embodiments, and various modifications are possible within the scope without departing from the technical spirit of the present invention. It is evident to those who have knowledge of.

도 1은 본 발명의 롤러회전부를 도시한 사시도.1 is a perspective view showing a roller rotating part of the present invention.

도 2는 본 발명의 고정부를 도시한 사시도.2 is a perspective view showing a fixing part of the present invention.

도 3은 본 발명의 이중파이프의 완충장치를 도시한 분해사시도.Figure 3 is an exploded perspective view showing a buffer of the double pipe of the present invention.

도 4는 본 발명의 이중파이프의 완충장치의 사용상태도.Figure 4 is a state of use of the buffer of the double pipe of the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10 : 롤러회전부 11 : 스프링10: roller rotating part 11: spring

12 : 받침대 13 : 걸림쇠12: pedestal 13: latch

20 : 고정부 21 : 슬라이드홈20: fixing part 21: slide groove

22 : 밀착면22: contact surface

50 : 이중파이프의 완충장치50: double pipe shock absorber

Claims (3)

중공관 형태의 내관(1)과 외관(2) 사이에 형성되되 상기 외관(2)에 밀착되는 롤러(3)와 내관(1)의 외측으로 결합되며 고정홈(4)을 형성한 'C'자 형태로 형성되는 한 쌍의 클램프(5)가 포함되는 이중파이프의 완충장치에 있어서, 'C' is formed between the inner tube (1) and the outer tube (2) of the hollow tube form and coupled to the outside of the roller (3) and the inner tube (1) in close contact with the outer tube (2) to form a fixing groove (4) In the double pipe shock absorber comprising a pair of clamps (5) formed in the shape of a ruler, 상기 롤러(3)가 결합되며 내측으로 스프링(11)이 삽입되고 받침대(12)와 걸림쇠(13)가 형성된 중공관형태의 롤러회전부(10);A roller rotating part 10 having a hollow tube shape in which the roller 3 is coupled and a spring 11 is inserted inward and a pedestal 12 and a latch 13 are formed; 상기 롤러회전부(10)가 삽입되며 롤러회전부(10)의 걸림쇠(13)가 결합되는 슬라이드홈(21)과 클램프(5)에 결합되는 밀착면(22)이 형성된 중공관형태의 고정부(20)로 이루어진 것에 특징이 있는 이중파이프의 완충장치.The roller rotating part 10 is inserted and the hollow groove-shaped fixing part 20 in which the slide groove 21 to which the latch 13 of the roller rotating part 10 is coupled and the contact surface 22 to be coupled to the clamp 5 are formed. Double pipe shock absorber characterized in that consisting of). 제 1항에 있어서, 상기 외관(2)에 밀착되는 롤러(3)의 외측면은 외관(2)의 내경(d1)과 동일하게 형성되는 것에 특징이 있는 이중파이프의 완충장치.2. The double pipe shock absorber according to claim 1, wherein the outer surface of the roller (3) which is in close contact with the outer surface (2) is formed equal to the inner diameter d1 of the outer surface (2). 제 1항에 있어서, 상기 클램프(5)에 밀착되는 고정부(20)의 밀착면(22)은 클램프(5)의 외경(d2)과 동일하게 형성되는 것에 특징이 있는 이중파이프의 완충장치.2. The double pipe shock absorber according to claim 1, wherein the contact surface (22) of the fixing portion (20) which is in close contact with the clamp (5) is formed in the same manner as the outer diameter (d2) of the clamp (5).
KR1020080096243A 2008-09-30 2008-09-30 Shock absorber of dual pipe KR100979547B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
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KR101448521B1 (en) * 2012-04-30 2014-10-14 주식회사 젠트로 Pipe Support Device
KR20170019907A (en) 2015-08-13 2017-02-22 삼성중공업 주식회사 Shock absorbing apparatus
KR102038833B1 (en) * 2018-07-25 2019-10-31 (주)우신이엔지 Folding type blocking device having a pressure assist function
KR102370041B1 (en) * 2021-06-22 2022-03-03 (주)아키덤엔지니어링건축사사무소 Piping structure for a fire
KR102386293B1 (en) * 2021-09-24 2022-04-14 (주)앤써 A supporting apparatus for double pipe
KR102510033B1 (en) * 2021-12-07 2023-03-14 박혜미 Double pipe support for LNG-powered vessels
KR20230069489A (en) * 2021-11-12 2023-05-19 정우이앤이 주식회사 Inner pipe supporter and double pipe including the same

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KR101406294B1 (en) * 2012-10-02 2014-06-13 주식회사 아이비엔에스 Dual pipe with strain compensation device

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Publication number Priority date Publication date Assignee Title
NL9400517A (en) * 1994-03-31 1995-11-01 Allseas Eng Bv Method and device for laying a pipeline on an underwater ground.
KR100261323B1 (en) * 1998-04-09 2000-08-01 방관수 Dual steel pipe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101448521B1 (en) * 2012-04-30 2014-10-14 주식회사 젠트로 Pipe Support Device
KR20170019907A (en) 2015-08-13 2017-02-22 삼성중공업 주식회사 Shock absorbing apparatus
KR102038833B1 (en) * 2018-07-25 2019-10-31 (주)우신이엔지 Folding type blocking device having a pressure assist function
KR102370041B1 (en) * 2021-06-22 2022-03-03 (주)아키덤엔지니어링건축사사무소 Piping structure for a fire
KR102386293B1 (en) * 2021-09-24 2022-04-14 (주)앤써 A supporting apparatus for double pipe
KR20230069489A (en) * 2021-11-12 2023-05-19 정우이앤이 주식회사 Inner pipe supporter and double pipe including the same
KR102510033B1 (en) * 2021-12-07 2023-03-14 박혜미 Double pipe support for LNG-powered vessels

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