FI60925B - COMBINATION GASFAELLA OCH VAETSKESEPARATOR - Google Patents

Description

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Mexico-Mexico (MX) 1377 ^ 5 Proven-Styrkt (71) (72) Abraham C. Miselem Asfura, Tecualiapan No. 60-22, Mexico 21, D.F.,

Mexico-Mexico (MX) (7M Leitzinger Oy (5I *) Combined gas trap and liquid separator - Kombinerad gasfälla och vätskeseparator

The invention relates to a combined gas trap and liquid separator comprising a hollow body having a lid and forming an inner cannon, an upstream vessel moving vertically inside the chamber, the lid having an outlet for removing liquid from the chamber, a lever extending between the vessel and the body portion vertical movements of the vessel, a valve operated by a lever which closes the outlet when the vessel is in a predetermined elevated position and opens the outlet when the vessel is below said position, a condensate inlet pipe the upper end is located inside the vessel in all its possible positions, and a steam and non-condensing gas outlet pipe extending from the bottom into the vessel.

A gas trap of this type is known, for example, from U.S. Pat. No. 1,766,970. It also has a gas outlet in the upper wall of the floating float vessel which communicates with the chamber. Below this float chamber there is a separation chamber connected to the float vessel on the one hand by a condensate inlet pipe and on the other hand by a steam pipe with a valve at the lower end which closes the steam pipe when the water level in the separation chamber reaches a certain level.

The operation of this, as with other similar types of steam traps, is based on the different densities of steam and condensate. When there is always a certain amount of water in the chamber containing the float vessel, the inverted float vessel will be subjected to a greater or lesser lifting force depending on whether there is steam or condensate inside. When steam enters the float vessel through the condensate inlet pipe and, in certain cases also through the separate steam pipe in the device according to U.S. Pat. No. 1,766,970, the low density of steam causes The valve remains closed until the steam condenses into a liquid to the extent that the float vessel sinks sufficiently to open the valve. The non-condensed gases exit through a small hole in the top wall of the float vessel and collect at the top of the chamber, from where they exit with the condensate when the trap opens.

As condensate flows into the float vessel, due to its higher density it fills the vessel, increases its weight and causes it to sink in the water. This opens more drain valve and trap outlet.

Since the inlet pipe of the trap is always connected to the device from which the condensate is removed, the float chamber is always under pressure, which facilitates the removal of condensates when the trap is opened.

Although the above-mentioned steam trap is generally considered to be very effective, its disadvantage is that it cannot distinguish between fresh steam and exhaust steam, but closes under the influence of both. In addition, if compressed air is introduced into the trap, this also closes it, because in all three cases the density is considerably lower than the density of the condensate, causing the float vessel to rise and the trap to close.

The object of the invention is to provide a combined gas trap and liquid separator of the type mentioned at the beginning, in which vapors and unsealed gases can be removed from inside the trap float vessel so that the trap operation is more efficient and separates steam and condensate roads to the boiler room and the removed vapors for reuse.

To achieve this purpose, a combined gas trap and liquid separator according to the invention is characterized in that the steam and unsealed gas outlet pipe extending outside the body 3 60925 extends upwards closer to the top of the vessel than the inlet pipe, from the liquid and ensures that the steam escapes substantially liquid-free into the outlet pipe, regardless of how high the vessel has to rise.

Thanks to the structure according to the invention, the following three purposes are further achieved: 1. The closing of the trap is prevented by the effect of the exhaust steam. The off-pipe removes this exhaust steam from inside the float vessel before causing the vessel to rise. It must be remembered that there is only a small percentage of exhaust fumes in the total condensate flow. This small amount of exhaust vapor can be removed through the exhaust pipe, but if not removed, it would be able to cause the float vessel to rise and the trap to close, as is the case, for example, in the trap known from UR patent 1,766,970.

2. Uncondensed gases can be removed by a trap from a device from which condensate is removed. Uncondensed gases, usually air and carbon dioxide, go into the boiler, dissolving in water. As the water evaporates, the gases are released with the steam. However, as the steam condenses, these gases do not redissolve and must be removed because they do not transfer heat but form an insulator for heat transfer.

A conventional steam trap (e.g., known from U.S. Patent No. 1,766,970) cannot effectively remove these uncondensed gases because the trap only opens under the influence of condensate. In the invention, a continuous outflow of steam and uncondensed gases takes place via the discharge device, even if the trap is closed. This means that some fresh steam is removed before it transfers its heat, but a significant increase in condensate removal power cancels out this small loss of steam.

3. The velocity of trapped liquids and vaporous media increases. As the exhaust device continuously draws out steam and gases, the flow rate towards the trap increases. This speed increases heat transfer because it has an abrasive effect on the walls of the condensate drain. This abrasion destroys the film formed by air and non-condensing gases. Disposal of this membrane increases the heat flow through the walls of the condensate drain.

4,60925

In the drawings:

Figure 1 shows a section of a steam trap comprising an inverted vessel with steam and gas removal devices and showing the main and outer main parts.

Figure 2 also shows a section of the same steam trap, but mounted differently.

The steam trap includes a hollow jacket or body 11 defining an inner chamber 12 with an inverted cup-shaped lid 13 connected to the chamber 12 by bolts passing through the holes 15. A valve outlet 16 is provided in the closure wall 14 and a valve seat 17 is fitted inside the chamber 12 to the surface of the closure wall 14. Inside the chamber 12 there is an inverted container 18 with a fixed hook 34 at the top which serves to pull or push the lever 19 comprising the valve 20. The lower part of the hollow body 11 has a concentric, central annular hub or protrusion 21 with internal threads 22 for an inlet pipe 23 which extends vertically upwards into the chamber 12 but does not extend to the top wall of the vessel 18.

A threaded nipple 24 is threaded into the internal threads of the condensate inlet 26 of the hollow body 11. This connects an additional portion 27 with an inner chamber 28 into which steam, gases and condensate enter through a pipe 29. A separate connector 30 with external threads is connected to the accessory and with internal threads to an outlet pipe 31, the other end of which extends vertically upwards above the inlet pipe 23, but does not extend to the upper wall of the container 18. Optionally, a guide plate may be provided at the upper end of the outlet pipe 31 for preventing access of the condensate to the outlet pipe 31.

According to Fig. 1, the stabilizing pipe 31 projecting from the opening of the connector 30 may communicate with the outside air through the opening 32, or according to Fig. 2 through the valve 36 to the condensate outlet pipe 33, or the condensate may be removed

Claims (8)

5 60925 also through either a valve or an orifice into a separate pipe which collects the exhaust steam and directs it to where it is used. The invention has been described above in its ordinary use, but it is natural and understandable that any changes may be made to the above-mentioned steam trap based on the description and within the scope of the invention. Of course, the shape and materials of the various parts of the structure and device or trap may also vary within the scope of the invention. A combined gas trap and liquid separator comprising a hollow body (11) having a lid (13, 14) and forming an inner chamber (12), an upside-down vessel (18) moving vertically inside the chamber (12), wherein the lid has an outlet (16) for discharging liquid from the chamber (12), a lever (19) extending between the container (18) and the body portion allowing vertical movement of the container, a lever operated valve (20) closing the outlet (16) with the container (18) in advance in a predetermined elevated position and opens the outlet with the vessel below said position, a condensate inlet tube (23) attached to the lower end of the body (11) extending into the vessel (18), the condensate inlet tube (23) extending in the vessel (18) at such a distance from the vessel the upper end of the inlet pipe (23) is located inside the vessel in all its possible positions, and the steam and non-condensed gas outlet pipe (31) extending from below to the vessel (18), characterized in that the steam and condensate the exhaust pipe (31) extending outside the body extends upwards in the container (18) closer to the upper end of the container than the inlet pipe (23), whereby the difference in height between the upper ends of these pipes (23, 31) separates the steam from the liquid and substantially ensures steam release liquid-free in the outlet pipe (31), regardless of how high the container (18) has to rise. A gas trap and liquid separator according to claim 1, wherein the discharge end of the condensate inlet pipe (23) is located symmetrically with respect to the central axis of the float vessel (18), characterized in that the discharge end of the inlet pipe (23) coaxially surrounds the outlet pipe (31). is led outside the body through a connection point between the inlet pipe (23) and the body. Gas trap and liquid separator according to Claim 1, characterized in that the outlet end of the outlet pipe (31) has a restricted opening (32) open to the atmosphere. A gas trap and liquid separator according to claim 1, characterized by a valve (36) in the outlet pipe (31) before the outlet end of the pipe. Gas trap and liquid separator according to Claim 1, characterized in that the outlet end of the outlet pipe (31) is connected to the condensate outlet pipe (33). Gas trap and liquid separator according to claim 1 or 2, characterized in that it further comprises a fitting (27) connected to the inlet connection (24, 26) of the body (11), inside which the outlet pipe (31) is fixed and which forms a ring -flan (28) for the passage of incoming condensate. 1. Combined gas and other separators, equipped with a body (11), provided with a lock (13, 14) and with a chamber (12), up and down with a spindle (18), and vertical assembly in the chamber (12), varvid Locket är försett med en ut-loppsöppning (16) försing in the chamber (12), en spak (19), som sträcker sig mellan kärlet (18) och en del av kroppen toAtande kärlets vertikalrörelser, en av spaken driven ventil (20), som tillsluter utloppsöppningen (16) med kärlet (18) i ett förutbes-tämt uppöjt läge ochpäp utterpöppningen med kärlet nedanför det nämnda läget, samt et vid kroppens (11) fäst inloppsrör (23) för condensat, som sträcker sig account kärlet (18), varvid inlopps-röret (23) fond condensate löper i kärlet account s & dant AvstAnd frän kärlets toppända, att inloppsrörets (23) toppända ligger inom kärlet i dess alla möj , samt ett utloppsrör (31) för Anga och okon-