US1601308A

US1601308A - Indicating dehydrator

Info

Publication number: US1601308A
Application number: US743576A
Authority: US
Inventors: Leland H Hill
Original assignee: Westinghouse Electric and Manufacturing Co
Current assignee: CBS Corp
Priority date: 1924-10-14
Filing date: 1924-10-14
Publication date: 1926-09-28
Anticipated expiration: 1943-09-28

Description

Sept. 28,1926. I 1 ,601,308

' L. H. Hl LL INDICATING DFEHYDRATOR' Filed Oct. 14 1924.

. l4 WITNESSES: INVENTOR Le/and h. /7/'// w- BY ATTORNEY Patented Sept. 28, 1926.

1,601,308 PATENT OFFICE.

LELAND H.- HILL, OF swIssvALE, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE. ELECTRIC & MANUFACTURING COMPANY, A CORPORATION or PENNSYLVANIA.

INnIcArINe DEHYDRATOR.

Application filed October 14, 1924. Serial No. 743,576.

My invention relates to fluid-insulated electrical translating devices and particularly to devices for preventing the access of moisture to the insulating fluid.

One object of my invenion is to provide a device for chemically treating air or other gases entering an electrical translating device that shall indicate the condition of the chemical compoun therein by showing the relative position of the chemical compound within the device.

Another object ofmy invention is to .provide a device for treating air or other gases that shall be unitary in form and adapted to attachment to electrical translating devices already in service.

A further object ofmy invention is to provide a device that shall cause air or other gases passing there-through to traverse a chemical compound that is movably-mounted in order to indicate its state of chemical exhaustion by giving a visual indication of the relative position of the chemical within the device.

In the accompanying drawings,

Figure 1 is a view, partially in'elevation and partially in section, of an electrical translating device embodying my invention.

Fig. 2 1s a view in elevation of the gastreating device embodying my invention.

Fig. 3 is a view, partially in elevation and partially in section, of the gas-treating de vice shown in Fig. 2.

Fig. 4 is a view, partially in elevation and partially in section, of a regulator valve con-- stituting a detail of the gas treating device.

My invention comprises, in general, an electrical translating device 1, such as a transformer, that is partially filled with insulating fluid 2, such as oil, above which there is confined an atmosphere 3 of gas and a device 4 containing suitable chemical'material for removing deleterious ingredients, such as water, from the air or gas drawn 1nto the translating device 1 during the process of inbreathing.

- The gas-treating device 4 comprises a main casing 5 having a perforated top or cover member 6 and a bottom plate 7 that is secured to the main portion 5 by screws 8. The main casing 5 is provided with suitable lugs 9 and 11 for securing the device 4' to the translating device 1. The bottom plate 7 is provided with a centrally-located, upwardlyextending'apertured lug. 12 and a downa threaded cap 14. The downwardl wardly projecting portion 13 that supports rojecting portion 13 is provided with s 0t? 15 behind which a transparent medium 16, su.ch as glass, is mounted. The portion 13 is marked with suitable indicia, such as full and refill, for cooperation with a pointer 27 in a manner hereinafter described.

Referring toFig. 3, a coil spring 17 is mounted centrally of the upper surface of the bottom member 7 which, in turn, supports a' container 18 for achemical compound 19 that is confined by a porous member 20, such as a screen. In electrical trans lating devices, it is particularly desirable that moisture be excluded from coming into contact with the insulating oil 2 for the reason that the presence of Water in such oils lessens their-dielectric properties. and tends to create undesirable sludges therein. Accordingly, the container 18 is usually filled with a dehydrating compound, such as-calcium chloride, although other chemical comv pounds may be employed, according to the member 23 of the container 18 with which it has a sliding fit. Another pipe or duct 24 extends from the cover 6 to the gas space 3 in the translating device 1. The bottom member 25 of the container 18 carries a centrally disposed rod 26 that terminates in a pointer 27 that cooperates with the indicia on the portion 13 for indicating the condition of the gas-treating device, in the man-t5 ner hereinafter described.

Referring to Figs. 2 and 4, the gas-treating device 4 is provided with a regulating valve 31 that is attached to the casing 5. The regulating valve comprises two similar check-valve units 32 both of which communicate with the interior of the casing 5 through an auxiliary chamber 33 constitutin a portion of the casing 5. Each of the va ve units 32 comprises a ball 34 thatis movable between a pair of

seat members

35 and 36 in such manner that the force. of gravity always tends to keep the ball 34 in cooperation with one of the

seat members

35 and 36, thereby efl'ectively closing the valve to the passage of gas. The upper unit 32 is provided with a rain cap 37 for'preventing the access of dust or moisture thereto.

Upon the occurrence of an increase in the volume of gas 3 contained in the electrical translating device 1, as by a reduction in the temperature of the constituent parts of the translating device 1, the pressure gradient between the atmosphere and the interior of the casing 5 across the regulating valve 31 becomes sufliciently great to cause ball 34 of the lower unit 32 to be slightly lifted from its seat 36, thereby permitting a certain amount of air or gas to enter the chamber 33. This gas surrounds the screen walls 20 of the container 18, and the moisture carried in suspension by the gas is absorbed by the calcium chloride. Inasmuch as the electrical translating device 4 is connected directly to the pipe 24, which, in turn is con-,

nected to the pipe 22, the lower end of which is surrounded b the chemical compound 19, a pressure gra ient exists across the later. Accordingly, the gas surrounding the container 18 tends to seep through the chemical compound 19 and enter the electrical translating device 1 through the

ducts

22 and 24. During the passage of the gas through the chemical compound 19, the latter undergoes a certain amount of chemical decomposition or exhaustion that is recorded in the increase of its weight. The increased weight of the chemical compound 19 causes the spring 17 to be compressed, with the resultvthat the container 18 and the rod 26 settle relatively to the bottom member 7 of'the device 5. The downward movement of the rod 26 causes the pointer 27 to assume-successively lower glance, the de ree of exhaustion of the chemical compoun 19.

In the event that the pressure in the gas space 3 becomes greater than atmospheric pressure, a certain amount of gas is discharged through the duct 22 and the chamber 33 to the upper check-valve unit 32, the ball 34 of which is lifted from its seat 35 to permit the escape of a quantity of gas to the atmosphere. While I have shown the two unitsof the regulator 31 to operate at the same pressure, it is obvious that, by changing the area of the balls 34 in the

seats

35 and 36 it will be possible to cause one unit to operate at a different pressure fromthe other, when it is desired that inbreathing of the electrical device 1 shall take plage at a lower pressure than outbreathmg It will thus be seen that I haveprovided a gas-treating device for electrical translatlng devices that is characterized by indicating the degree of exhaustion of the chemical compound therein by showing the position of the chemical compound relative to its housing at all times.

It is understood that such various changes in the disposition of the parts shown in the accompanying drawings and described in the specification may be made as fall within the scope of the appended claims.

I claim as my invention:

1. A gas-treating device comprising a casing, a gas duct extendingtherein, a chemical container within the casing guided by the gas duct, means for movably supporting the chemical container and means for indicating the position of the container within the casing.

2. A gas-treating device comprising 3, casing, a gas duct extending therein, a chemical container within the casln surrounding'the open end of the duct, and means for movably supporting the chemical container;

3. A gas-treating device comprising :1 casing, a gas .duct extending therein, a chemical container within the casing surrounding the open end of the duct, means for movably supporting the chemical container and a means for indicating the positionpf the container within the casing. Y

4. A gas-treating device comprising a' casing, a gas duct extending therein, a chemical container within the casing surrounding the open end of the duct, means for movably supporting the chemical container, and means cooperating with the duct for controlling the gas. movement through the casing.

5. A gas-treating device comprising a casing, a gas duct extending downwardly therein, a chemical container within the casing surrounding the open end of the duct, means for movably supporting the chemical container and means attached to the casing for cooperating with the duct for controlling the gas movement through the casing.

6. A gas-treating device comprising a casing, a gas duct extending therein, a chemical compound surrounding the open end of the duct, means for movably supporting the chemical compound and means for indicating the position of the chemical compound within the casing. v

7. A gas-treating device comprising a casing, a gas duct extending therein, a chemical compound surrounding the open end of the duct whereby the gas traversing the duct is subjected to the chemical compound, means for movably supporting the chemical com- .pound and means for indicating the position of the chemical compound within the casing.

8. A gas-treating device comprising a casing, a gas duct extending therein, a chemical compound, the weight of which changes with its chemical exhaustion, surrounding the open end of the duct whereby the gas trav-, -ersing the duct is subjectedto the chemical compound, means for movably supporting the chemical compound and means for indicating the position of the chemical com-' pound within the casing.

9. A gas-treating device comprising a casing, a gas-duct extending therein, a chemical compound, the weight of which changes with its chemical exhaustion, surrounding the open end of the duct whereby the gas trav-- ersingthe duct is subjected to the chemical compound, means for movably supporting the chemical compound'and means for indicating the condition of the chemical compound by indicating its position within the.

casing.

10. A gas-treating device comprising a casing, 21 gas duct extending therein, a body of de-hydrating compound surrounding the open end of the duct whereby the gas traversing the duct is subjected to the de-hydrating compound, means for movably supporting the de-hydrating material and means for indicating the condition of the de-hydrating compound by indicating its position within the-casing.

In' testimonywhereof, I have hereunto subscribed my name this 9th day of October, 1924.

LELAND H.