Apparatus for fixing pressure vessel

1. An apparatus for fixing a pressure vessel to an object, the apparatus comprising:

a frame member configured to be fixed to the object;

a first locking part configured to lock a first axial end of the pressure vessel to the frame member; and

a second locking part configured to lock a second axial end of the pressure vessel to the frame member,

wherein the pressure vessel comprises:

a body part;

a first side part disposed at a first end of the body part and having a dome shape; and

a second side part disposed at a second end of the body part and having a dome shape,

wherein the first side part includes a tap portion,

wherein the first locking part is configured to lock the tap portion to the frame member,

wherein the first locking part comprises:

a bracket fixed to the frame member and having a fastening hole corresponding to the tap portion; and

a fastening member fastened to the fastening hole and the tap portion, and

wherein the apparatus further comprises:

a first reference hole disposed in the frame member;

a first mounting hole disposed in the bracket and corresponding to the first reference hole;

a first fixing member fastened to the first reference hole and the first mounting hole;

a second reference hole disposed in the frame member and spaced apart from the first reference hole;

a second mounting hole provided in the bracket and corresponding to the second reference hole; and

a second fixing member fastened to the second reference hole and the second mounting hole.

2. The apparatus of claim 1 ,

wherein the first reference hole has a first length in a radial direction of the pressure vessel, and

wherein the second reference hole has a second length in the radial direction that is longer than the first length.

3. The apparatus of claim 1 , wherein the second locking part comprises:

a support part configured to support an outer surface of the second side part; and

a bracket configured to support the support part on the frame member.

4. The apparatus of claim 3 , wherein the second locking part further comprises:

a fastening hole disposed in the bracket;

a fastening part disposed on the frame member and having a coupling hole corresponding to the fastening hole; and

a fastening member fastened to the fastening hole and the coupling hole.

5. The apparatus of claim 3 , wherein the support part has a form of a ring that partially surrounds the outer surface of the second side part.

6. The apparatus of claim 1 , further comprising:

a seating part disposed on the frame member,

wherein the pressure vessel is seated on the seating part.

7. The apparatus of claim 6 , wherein the seating part comprises:

a first seating rib disposed on the frame member and configured to allow the body part to be seated thereon; and

a second seating rib disposed on the frame member, spaced apart from the first seating rib, and configured to allow the body part to be seated thereon.

8. The apparatus of claim 7 ,

wherein the first seating rib comprises a first seating surface disposed in contact with an outer circumferential surface of the body part, and

wherein the second seating rib comprises a second seating surface disposed in contact with the outer circumferential surface of the body part.

9. The apparatus of claim 7 , further comprising:

a first seating pad interposed between the body part and the first seating rib; and

a second seating pad interposed between the body part and the second seating rib.

10. An apparatus for fixing a pressure vessel to an object, the apparatus comprising:

a frame member configured to be fixed to the object;

a first locking part configured to lock a first axial end of the pressure vessel to the frame member; and

a second locking part configured to lock a second axial end of the pressure vessel to the frame member,

wherein the pressure vessel comprises:

a body part;

a first side part disposed at a first end of the body part and having a dome shape; and

a second side part disposed at a second end of the body part and having a dome shape,

wherein the first side part includes a tap portion,

wherein the first locking part is configured to lock the tap portion to the frame member, and

wherein the second locking part comprises:

a support part configured to support an outer surface of the second side part;

a bracket configured to support the support part on the frame member;

a guide slot disposed in the frame member in a longitudinal direction of the pressure vessel; and

a guide protrusion connected to the bracket and accommodated in the guide slot so as to be rectilinearly movable.

11. The apparatus of claim 10 , further comprising:

an inclined guide portion disposed in an opening portion of the guide slot and configured to guide insertion of the guide protrusion.

12. The apparatus of claim 10 ,

wherein the guide slot has a first width in a radial direction of the pressure vessel, and

wherein the guide protrusion has a second width corresponding to the first width.

13. The apparatus of claim 10 ,

wherein the guide slot has a first thickness in an upward/downward direction, and

wherein the guide protrusion has a second thickness corresponding to the first thickness.

14. The apparatus of claim 10 , further comprising:

a locking protrusion disposed at an end of the guide protrusion,

wherein the locking protrusion has a larger cross-sectional area than the guide slot, and disposed on an outer surface of the frame member.

15. An apparatus for fixing a pressure vessel to an object, the apparatus comprising:

a frame member configured to be fixed to the object;

a first locking part configured to lock a first axial end of the pressure vessel to the frame member; and

a second locking part configured to lock a second axial end of the pressure vessel to the frame member;

wherein the pressure vessel comprises:

a body part;

a first side part disposed at a first end of the body part and having a dome shape; and

a second side part disposed at a second end of the body part and having a dome shape,

wherein the first side part includes a tap portion,

wherein the first locking part is configured to lock the tap portion to the frame member,

wherein the second locking part comprises:

a support part configured to support an outer surface of the second side part; and

a bracket configured to support the support part on the frame member, and

wherein the apparatus further comprises an elastic pad interposed between the second side part and the support part.