US2079896A - Valve - Google Patents

Description

May 11, 1931 E. E. BRosus VALVE Filed Aug. 5, 1930 2 Sheets-Sheet 1 May 11, 1937. E. E. BROSIUS VALVE Filed Aug. 5, l930 2 Sheets-Sheet 2 INVENTOR Patented May 11, 1937 UNITED STATES PATENT OFFICE VALVE Edgar E. Brosius, Pittsburgh, Pa.

Application August 5, 1930, Serial No. 473,134

15 Claims.

The present invention relates broadly to valves and valve structures, and more particularly to an improved valve of the so-called hot blast type adapted to be used in connection with the stoves of blast furnaces. It will be understood, however, that the utility of the invention is not limited with respect to the particular fluids which are being controlled, although by reason of the Construction of the parts special advantages are obtained when the valve is used for the control of heated gases.

So-called hot blast valves are well known to those skilled in the art, and with certain minor exceptions, are usually of more or less standard construction insofar as the main features thereof are concerned. In most cases they comprise a suitable seat structure, usually water cooled, and a built up valve member which is also provided with means for effecting water cooling thereof. Such structures possess not only the disadvantages incident to initial cost and expense of upkeep, but also the disadvantage of greater weight with the consequent requirement of special mountings.

Hot blast valves as ordinarily used also require cooling whether they are in such position as to cut off flow or to permit flow, inasmuch as they are subjected at all times to temperature conditions such that cooling to som-e extent is necessary. It is one of the objects of the present invention to provide an improved valve structure which does not require water cooling at any time, and which when in its inoperative position is partially shield ed from the full eflect of the medium being controlled.

With standard structures, considerable difficulty is frequently experienced in effecting removal thereof in case repair becomes necessary. This is not only due to the weight of the parts and the consequent difrlculty of handling the same, but also due to warping, expansion and general dimensional or contour changes in the parts by reason of the temperature conditions to which Figure 2 is a partial vertical sectional View along the line II-II of Figure 1.

A valve possessing the desirable features of the present invention is adapted for installation bodily in a line of standard Construction. In the drawings there are indicated separated portions 2 and 3 of such a line. Secured to the portion 2 is a fiange 4, Conveniently in the form of an angle, to which is secured a scaling and seat carrying member 5. This member is preferably constructed in the form of an annulus, slightly dished as illus trated in Figure 1, and secured to a valve housing (i having opposed seats 'i for a valve 8. The valve 8 is a disk valve formed of heat-resisting metal having a dished central portion and a flanged edge. The outer portion of the annulus 5 may be clamped to the fiange 4 by a clamping ring 9 and bolts I, the ring 9 being welded to the annulus 5. By making this disk of heat resistant material, such as a chrome-iron alloy of the type known as Duraloy, capable of withstanding temperatures well above 2000 F. without warping, extremely desirable results are obtained in that the annulus, even though of comparatively light Construction, is capable of maintaining the valve housing centrally of the line and in the desired position.

The line section 3 is provided with a similar angle l I against which is clamped a flexiblecompensating annulus !2. This annulus at its outer periphery is clamped against the fiange Il by a clamping ring M and bolts |5 similar to the bolts !0 previously described, the ring 4 being welded to the annulus IE. From this point of attachment the compensating disk extends inwardly a predetermined distance, and is then bent at substantially right angles to provide a housing seating flange IS cooperating with the side of the housing 6 remote from the annulus 5. This compensating disk is also preferably constructed of heat resisting material of the character referred to, and by reason of its shape permits normal expansion and contraction of the sections 2 and 3 without subjecting the valve housing or the seats 'I to any distortion, and without tending to produce any binding action of the valve such as would interfere with the desired operation thereof.

Extending between the rings 9 and |4 is any desired number of means for so fiexing the parts as to permit ready removal of the valve from the line. For this purpose I have illustrated a turn buckle l'l having a bolt !8 suitably secured to the ring 9 and a similar bolt [9 suitably secured to the ring M, bv welding or the like, as illustrated in Figure l. With this Construction, upon loosening the bolts o and |5 and adjusting the turn buckle, the over-all width of the valve parts may be decreased, thereby facilitating bodily removal thereof from the line. In like manner, by suitably tightening .such turn buckle or turn buckles prior to the insertion of the valve, it is possible to readily slip the same into position.

The valve itself is herein illustrated as comprising a substantially circular dished body portion terminating in a seating fiange 26 adapted when the valve is in its operative position, as indicated in the drawings, to` lie in the plane of, and cooperate with, the seats T. For insuring the desired relationship of the parts in this respect, there may be provided an adjusting screw 21 extending through the housing 6 and adapted to engage the flange 25] on the valve for controlling the extent of closing movement thereof.

For opening and closing the valve, the flange 2!) may be provided at a suitable point on its periphery with spaced lugs 22 adapted to receive therebetween a stern 23 which is Secured in position by a suitable pivot pin 24. This stern is adapted to be moved in opposite directions by any suitable mechanism (not shown) as well understood in the art.

- For receiving the valve when in its inoperative position, there is Secured to the housing 6 a supplemental housing 25 of such dimensions as to permit movement of the valve from its full line position as indicated in Figure 2, to its dotted line position as also indicated in this figure. In such dotted line position the main valve body is substantially sealed against the heating efiect of the gases being controlled by means of an inwardly projecting rib or seat 26 formed in the housing 6 and of such configuration as to cooperate with the trailing edge portion of the valve adjacent the sections. For this purpose the rib comprises opposed arcuate portions 21 adapted to cooperate with opposite edges of the fiange 20, and horizontally extending portions 28 adapted to cooperate with sealing lugs 29 projecting laterally from the valve body. While the relative dimensions of the cross rib, the valve body and lugs 29 are not such as to afford a gas-tight seal between the valve body and the housing, the space therebetween is so narrow as not to permit the free passage of gases. In any case, I found that the Volume of gases admitted is so small compared to the heat radiating surface in contact therewith, that the temperature conditions are kept to a substantially normal value. Not only is the valve itself thus protected when in inoperative positions, but the upper chamber, which is Conveniently ccnstructed of cast iron or similar material, not capable of withstanding the temperatures to which it would be raised if the free flow of gases thereto were permitted, is also protected. With the valve in its operative position as illustrated in the drawings, it is apparent that the flow of gases into the upper housing or casing is prevented.

It will thus be seen that I provide a valve, a valve housing and valve mounting members of special heat resisting material, such as that referred to, and capable of withstanding temperatures will above the maximum temperatures of the gases being controlled Without any danger of warping. In this manner any necessity of water cooling is obviated, and a valve structure of correspondingly less Weight and greater compactness is afiorded. This not only provides a valve having a lower initial cost, but one which may be maintainedin operation with less trouble and expense. The initial installation and subsequent removal of the valve, as may be required, are also facilitated.

While I have herein referred to certain advantages, and certain preferred features of construction and operation, it will be understood that other advantages are obtained by the use of my invention which may be likewise embodied in other forms Without departing either from the spirit of my invention or the scope of my broader claims.

I claim:

1. A valve structure comprising a valve housing, a valve within and peripherally enclosed by said housing, exible supporting means for said housing, and means carried by said fiexible supporting means and removable bodily therewith for fiexing said supporting means to permit bodily removal of the housing and supporting means.

2. A valve structure, comprising a housing, a valve therein, seats in said housing for said valve, spaced substantially annular members supporting said housing from opposite sides, and means for varying the spacing between said members.

3. A valve structure, comprising a valve housing having opposed seats therein fixedly mounted relative one to the other, a valve within said housing for cooperation with said seats, space'd supporting means cooperating With opposite sides of said housing, and means for varying the spacing between said supporting means.

4. A valve structure, comprising a housing, a valve therein and peripherally enclosed thereby, spaced supporting means for said housing, at least one of said means being fiexible, and means carried by said flexible supporting means and removable bodily therewith for flexing said means to vary the spacing thereoi and facilitate bodily removal of the housing.

5. The combination with a pair of aligned pipe sections, of a valve structure including a valve and housing detachably held in position therein, mounting means for detachably supporting said valve structure, and means for decreasing the effective width of said mounting means to facilitate insertion and removal of the valve structure While the pipe sections are stationary.

6. The combination with a pair of aligned pipe sections, of a valve structure in position therein,

mounting means for said valve structure, and v means for decreasing the effective width of said mounting means to facilitate insertion and removal of the valve structure, one of said mounting means comprising a flexible member.

7. A hot blast valve, comprising a valve housing adapted to receive a valve in either operative or inoperative position and substantially enclose the same, a valve therein, and intermediate seating means having at least a portion projecting inwardly of said housing 'out of engagement with the valve when in operative position for cooperation with the valve When in inoperative position within the housing for limiting the access of hot gases into the portion of the housing containing the valve.

8. A valve structure, comprising a housing having substantially annular opposed seats therein, a transverse seating rib above said seats, and a valve adapted to cooperate with said seats and having lateral sealing lugs on the lower portion of said valve adapted to cooperate With said seating rib.

9. The combination with a hot blast line, of a valve, a flexible mounting for said valve on each sid thereoi, and means for flexing said mountings to diminish or increase at Will the overall width of the valve and mountings.

10. The combination with a hot blast line including sections in opposed spaced relatonship, of a metallic housing capable of withstanding a temperature of 2000 F. without warping, a valve within said housing capable of Withstanding a temperature of 2000 F. without Warping, high heat resisting means for securing said housing to said sections, and means for decreasing the overall width 'of the housing and securing means to facilitate bodily insertion or removal thereof.

11. As an article of manufacture, a hot blast valve, comprising a housing of heat ressting metal capable of Withstanding a temperature of 2000 F. without warpng, a valve of high heat resisting metal within said housing capable of withstanding a temperature of 2000 F. without Warping, fiexible means projecting from opposite sides of said. housing, and collapsing means carried by said fiexible means for decreasing the overall width thereof.

12. The combination with a hot blast line, comprising spaced alined sections, of a valve housing having opposed seats therein and located between said sections, fiexible means projecting from said housing for securing the same to the alined sections to permit relative movement between the sections and the housing with its seats, said housing and carrying means being free from Water cooling and oomprising high heat resisting metal capable of withstanding temperatures above 2000 F., and means for decreasing the overall width of the parts adapted to be secured to said sections to facilitate insertion and removal thereof.

13. A hot blast valve comprising a disk valve having a flanged edge with laterally projecting lugs at the sides of the trailing edge of the valve. a valve housing having a valve opening adapted to be closed by the valve and a supplementary housing into which the valve is withdrawn when in open position, valve seats around the valve opening with which the fianged edge of the valve 'egisters when the valve is in closed position, and a seat-like sealing means at the entrance of the supplemental housing with which the trailing edge of the valve and its projecting lugs register when the valve is withdrawn into the supplemental housing to prevent passage of hot gases into the supplemental housing.

14. A hot blast valve comprising a valve member having a flanged edge, a valve housing having a valve opening adapted to be closed by the valve and a supplementary housing into which the valve is withdrawn when in open position, valve seats around the valve 'opening with which the flanged edge of the valve registers when the valve is in closed position, and a seat-like sealing means at the entrance of the supplemental housing with which the trailing edge of the valve registers when the valve is withdrawn into the supplemental housing to prevent passage of hot gases into the supplemental housing.

15. A hot blast valve, comprising a valve housing, a valve of the gate type within said housing and movable generally in its plane to operative and inoperative positions while substantially enclosed within said housing, and intermediate seating means on said housing out of eng agement with the valve when in operative position for cooperation with the valve wnen in inoperative position for limiting the access of hot gases into the portion of the housing containing the valve.

EDGAR E. BROSIUS.

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