Coupling guard system

• US 8,061,737 B2
• Filed: 09/25/2007
• Issued: 11/22/2011
• Est. Priority Date: 09/25/2006
• Status: Expired due to Fees

• Current Assignee: Dresser-Rand Company (Siemens AG)
• Original Assignee: Dresser-Rand Company (Siemens AG)
• Inventors: Rohrs, Charles A., Majot, Kevin M.
• Primary Examiner(s): BOCHNA, DAVID
• Application Number:
  US12/441,903
• Publication Number:
  US 20100044966A1
• Time in Patent Office: 1,519 Days
• Field of Search: 285/45, 285/48, 285/52, 285/145.1, 285/325, 285/330, 285/369, 285/417, 417/360, 417/361, 417/422, 417/423.14, 464/170, 464/172, 464/171
• US Class Current: 285/45
• CPC Class Codes: F25B 31/02 of motor-compressor units
• CPC Class Codes: F25D 23/006 for mounting refrigerating machinery components

Abstract

A guard system for a coupling that connects a first component to a second component in a pressurized machinery system includes a coupling guard moveable between an open position, which allows access to an internal region of the coupling, and a closed position, which forms a seal surrounding the coupling from the first component to the second component. The system also includes a guide for directing movement of the coupling guard.

Claims

1. A guard system, comprising:

a coupling guard moveable between an open position, wherein the coupling guard allows access to an internal region of a coupling connected to a first component and a second component, and a closed position, wherein the coupling guard forms a seal surrounding the coupling from the first component to the second component, the coupling guard comprising;

a first axial end located proximal to the first component;

a second axial end located proximal to the second component;

a first radial sealing surface positioned at the first axial end; and

a second radial sealing surface positioned at the second axial end; and

a guide coupled to the coupling guard and extending between the first and second components, for directing movement of the coupling guard.

2. The guard system of claim 1, further comprising an adjuster coupled to the coupling guard for adjusting a position of the coupling guard.

3. The guard system of claim 2, wherein the adjuster comprises a roller engaging the guide.

4. The guard system of claim 1, wherein the coupling guard includes an outer circumference, and a first slot formed in the outer circumference and slidably receiving the guide.

5. The guard system of claim 4, wherein the coupling guard further comprises a second slot formed in the outer circumference and positioned 180°

around the outer circumference apart from the first slot.

6. The guard system of claim 1, further comprising a lock block for maintaining the coupling guard in the closed position.

7. The guard system of claim 6, wherein the lock block is positioned between the coupling guard and the guide.

8. A guard system for a coupling that connects a motor casing and a compressor casing, comprising:

a coupling guard moveable between an open position, which allows access to an internal region of the coupling, and a closed position, in which the coupling guard forms a seal surrounding the coupling, the coupling guard comprising;

an axial end proximal to the compressor casing; and

a radial sealing surface positioned at the axial end, for sealing the coupling guard to the compressor casing when the coupling guard is in the closed position;

a guide extending between the motor casing and the compressor casing; and

an adjuster coupled to the coupling guard and slidably engaging the guide, for adjusting a position of the coupling guard relative to the guide.

9. The guard system of claim 8, wherein the coupling guard includes an outer circumference and a pair of slots defined therein, wherein each one of the pair of slots slidably receives the guide.

10. The guard system of claim 8, wherein the adjuster slidably receives the guide through an aperture defined in the adjuster, and includes a roller engaging the guide.

11. The guard system of claim 8, wherein:

the adjuster comprises;

a first slide block including first and second apertures defined therein; and

a second slide block including third and fourth apertures defined therein; and

the guide comprises;

a first slide bar extending through the first and third apertures; and

a second slide bar extending through the second and fourth apertures.

12. The guard system of claim 11, wherein the adjuster further comprises a plurality of rollers, wherein at least one of the plurality of rollers is disposed in each of the first, second, third, and fourth apertures.

13. The guard system of claim 8, further comprising a circumferential sealing surface positioned proximal to the axial end of the coupling guard and radially between the coupling and the coupling guard.

14. A coupling guard system, comprising:

a coupling guard comprising;

a first axial end located proximal to a compressor casing;

a second axial end located proximal to a motor casing;

a radial sealing surface located at the first axial end; and

a circumferential sealing surface located proximal to the first axial end,

wherein the coupling guard is axially moveable between an open position, which allows access to an internal region between the compressor casing and the motor casing, and a closed position, in which the coupling guard forms a seal surrounding the internal region; and

a guide comprising a slide bar extending between the compressor casing and the motor casing, and an adjuster coupled to the slide bar and the coupling guard, for adjusting positioning of the coupling guard on the slide bar.

15. The coupling guard system of claim 14, wherein the guide further comprises a lock block for maintaining the coupling guard in the closed position.

16. The coupling guard system of claim 15, wherein the lock block is positioned between the guide and the compressor casing.

17. The coupling guard system of claim 14, wherein the adjuster further comprises:

an aperture defined therein, through which the slide bar is received; and

a roller engaging the slide bar.

18. The coupling guard system of claim 14, wherein the coupling guard includes an outer circumference and a slot defined therein that slidably receives the slide bar, for movement of the coupling guard on the slide bar.