Mechanical seal support system

Abstract

A mechanical seal support system for a sealing device for sealing a piece of industrial equipment, includes a mechanical seal for sealing the piece of industrial equipment and a system vessel for containing barrier fluid for the mechanical seal and being circumferentially split into a plurality of sections detachably attached for retaining pressure. The system vessel includes a clean-in-place (CIP) assembly, a cooling element and device for sterilizing the system vessel. The device for sterilizing the a heating element is formed as a coiled tubular element for the barrier fluid to pass therethrough, with closed-loop pipe work included for connecting the system vessel to the mechanical seal and a drain and filling device for removing and adding the barrier fluid to the system vessel.

Claims

1. A seal support system for a sealing device for sealing a piece of industrial equipment, comprising: a mechanical seal for sealing the piece of industrial equipment; a system vessel for containing barrier fluid for said mechanical seal and being circumferentially split into a plurality of sections detachably attached for retaining pressure, each section of said plurality of sections includes a ferrule with each said section being attached to an adjacent section of said plurality of sections, said ferrules of each of two said adjacent sections being encompassed by a circular and angled fastener having an inclined surface encircling said system vessel so that, on closing said adjacent sections together, said fastener draws said ferrules of said two adjacent sections together with a circular elastomeric ring located between said ferrules of said two adjacent sections, and further including a coupling secured to said system vessel via an exterior weld and an interior weld, said system vessel including a clean-in-place (CIP) assembly, a cooling element and means for sterilizing said system vessel, said means for sterilizing including a heating element formed as a coiled tubular element for barrier fluid to pass therethrough, wherein said cooling element and said heating element are each located within said system vessel and with both of said cooling element and heating element being coiled and tubular; closed-loop pipe work for connecting said system vessel to the mechanical seal; and, drain and filling means for removing and adding the barrier fluid to the system vessel.

2. The seal support system for the sealing device for sealing the piece of industrial equipment according to claim 1, wherein said system vessel includes the clean-in-place (CIP) assembly having an input orifice and an output communication orifice so that fluid passing into the input orifice of the clean-in-place (CIP) assembly is able to be dispersed through the output orifice.

3. The seal support system for the sealing device for sealing the piece of industrial equipment according to claim 1, wherein said cooling element has a coiled tubular cavity connected to at least one communication orifice, so that interior contents of said system vessel are temperature-controlled.

4. The seal support system for the sealing device for sealing the piece of industrial equipment according to claim 3, wherein fluid circulated through said cooling element does not come into contact with barrier fluid contactable surfaces.

5. The seal support system for the sealing device for sealing the piece of industrial equipment according to claim 3, further comprising means for automatically controlling temperature of said seal support system either at set times or in accordance with set stimuli.

6. The seal support system for the sealing device for sealing the piece of industrial equipment according to claim 3, wherein said heating element is externally controllable for implementing set heating cycles.

7. The seal support system for the sealing device for sealing the piece of industrial equipment according to claim 1, wherein said coiled tubular element is connected to at least one communication orifice for connection to an external power source and for permitting internal contents of said seal support system to be heated.

8. The seal support system for the sealing device for sealing the piece of industrial equipment according to claim 1, further comprising at least one of a pressure gauge, a flow indicator, a pressure regulator, a check valve, an air vent valve and a three-way valve for automatically controlling said seal support system.

9. The seal support system for the sealing device for sealing the piece of industrial equipment according to claim 1, wherein said barrier fluid is a barrier liquid.

10. The seal support system for the sealing device for sealing the piece of industrial equipment according to claim 1, wherein said barrier fluid is a barrier buffer.

Description

BRIEF DESCRIPTION OF THE DRAWING FIGURES

(1) In the drawing, wherein similar reference numerals and symbols denote similar features throughout the several views:

(2) FIG. 1 is a Pipe and Instrumentation Diagram (P&ID) of the preferred embodiment of the system of the invention;

(3) FIG. 2 is a cross sectional view of the primary embodiment of the system of the invention with clamping ring only;

(4) FIG. 3 is a cross sectional view of the secondary embodiment of the system of the invention with clamping ring and CIP assembly;

(5) FIG. 4 is a cross sectional view of the third embodiment of the system of the invention with clamping ring and cooling coil;

(6) FIG. 5 is a cross sectional view of the fourth of the system of the invention with clamping ring, cooling coil and CIP assembly;

(7) FIG. 6 is a cross sectional view of the fifth of the system of the invention with clamping ring, cooling coil, heating element and CIP assembly; and,

(8) FIG. 7 is a detail view of a welded section of the system of the invention

DETAILED DESCRIPTION OF THE DRAWING FIGURES AND PREFERRED EMBODIMENTS

(9) The reader will relate to various benefits of the seal support system of the invention which will now herewith be described with the aid of the following drawings. The reader will note the modularity of each of the embodiments of the system of invention and relate that the separate elements, being the cooling coil, heating element and CIP assembly, are all elements that may be included or not included in any/all embodiments of the system of invention.

(10) FIG. 1 is a P&ID detailing the system of invention 1 and showing how an item of industrial equipment is sealed with a sealing device such as a mechanical seal 3. The seal is connected to a vessel 1 with inlet 4, three-way valve 13 and return pipe 5. The vessel 1 is preferably connected to a mains fluid supply 6 via pipe work 7. The mains fluid supply provides barrier fluid to the inner most surfaces 8 (see FIG. 2) of the vessel 1. Preferably, the three-way valve 13 is positioned such that fluid may be, but not limited to, flushed through the seal and drained from the system. Preferably, pipe work 7 is connected to a check valve 9, pressure regulator 10, pressure gauge 11, and flow indicator 12, so that the pressure at the inlet of the barrier fluid from the mains source 6, can be regulated to the seal 3. Preferably, the system of invention includes an air vent valve 14 to ensure that the air gap within the vessel 1 is maintained to stop hydrostatic lock.

(11) FIG. 2 is a cross-sectional view of the primary embodiment of invention described above, such as that the two sections of the vessel 1; being section 15 and section 16, have each a ferrule 17 fixed to the largest opening of either section. Said ferrules 17 interlock with a rubber circular ring 18 made out of nitrile, and furthermore, a jointed circular fastener 19 which encircles the vessel 1 and encompasses the ferrules 17 and the elastomeric ring 18. Furthermore the vessel is provided with two major orifices, 20 and 21 (which are also indicated on FIG. 1) and any number of additional orifices represented here by orifice 22, orifice 23, orifice 24, orifice 25 and orifice 26. Additionally the preferred embodiment of the vessel is held in its intended position by brackets 27 and 28. Preferably, the rubber ring 18 and the two cylindrical connections 17 have a convolution along their profiles such that the rubber ring 18 fits into the opposing convolutions of the two ferrules 17. Preferably, the ferrules 17 attached to the two sections of vessel 1, being section 15 and section 16, are similar in their profile, such that a single ferrule 17 may be used for both the sections of the vessel 1.

(12) FIG. 3 is a cross-sectional view of the secondary embodiment of the system of invention described in FIG. 1 and FIG. 2, and includes a cleaning ball 29 made of steel, comprising one or more orifices 30 situated about the exterior surface such that there is a communication pathway between the inner most section of the ball to the outermost section of the ball. Preferably, the cleaning ball 29 is attached to orifice 20 such that fluid may be fed through the orifice 20 and distributed to the barrier fluid contacting surfaces by the cleaning ball 29 through the orifice or orifices 30.

(13) FIG. 4 is a cross-sectional view of the third embodiment of the system of invention described in FIG. 1 and FIG. 2, whereby a convoluted element 31 is situated in the internal cavity formed by the two sections of vessel 1, being section 15 and section 16, and connected to two orifices 32 and 33, such that fluid may be passed through either of the aforementioned orifices and pass out of the opposing orifice without coming into contact with any of the barrier fluid contactable surfaces of the vessel 1.

(14) FIG. 5 is a cross-sectional view of the fourth embodiment of the system of invention described in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, whereby both the cleaning ball 29 and the convoluted coil 31 are included in the same embodiment of the system.

(15) FIG. 6 is a cross-sectional view of the fifth embodiment of the system of invention described in FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5, whereby the system of invention detailed in FIG. 5, and all subsequent figures, also encapsulates a secondary convoluted metallic element 34. Preferably, the secondary convoluted metallic element 34 is communicated to through orifice 21 by an external power supply such that, as and when required, the vessel 1 and all fluid in contact with the barrier contactable surfaces may be heated to a defined temperature and held for a defined amount of time.

(16) Preferably, the secondary convoluted metallic element 34 may be set to automatically raise the temperature of the fluid within the system to a predefined temperature and hold it for a predefined amount of time.

(17) FIG. 7 is a detail view of a welded coupling present on all embodiments of the invention whereby it is shown that for the coupling 35 there is an exterior weld 36, present on the exterior 37 of the vessel 1, and in interior weld 38 on the interior 8 (see FIG. 2) of the vessel 1 such that the interior present body of the coupling does not present a viable bug trap. Preferably, for all components present in any embodiment of the system of invention that are in contact with the exterior of the vessel 37 and the interior of the vessel 8 (see FIG. 2) shall incorporate a weld on both the outside and the inside of the vessel 1 such that the fluid within the system is not exposed to any bug traps.

(18) Preferably, the system vessel 1 for containing a barrier fluid for the mechanical seal 3 is circumferentially split into a plurality of sections detachably attached for retaining pressure, the system vessel 1 including the clean-in-place assembly, a cooling element and means for sterilizing the system vessel with the means for sterilizing including a heating element formed as a coiled tubular element for barrier fluid to pass therethrough, closed-loop pipe work for connecting the system vessel to the mechanical seal, and drain and filling means for removing and adding the barrier fluid to the system vessel.

(19) The experienced reader will note that FIGS. 1 through to 7, present a number or embodiments of the system of invention but does not limit the embodiment to those outlined above such that one embodiment of the system of invention may contain a different permutation of the features outlined above.

(20) While only several embodiments of the present invention have been shown and described, it will be obvious to those skilled in the art that many modifications may be made to the present invention without departing from the spirit and scope thereof.