An overflow pipe F, by providing a channel through which steam and water may escape before the stream has acquired sufficient energy to force its way into the boiler, allows the injector to start into action.
In self-starting injectors an arrangement is provided which permits free overflow until the injector starts into action, when the openings are automatically adjusted to suit delivery into the boiler.
The manholes are now closed, and steam is turned on at the injector J by opening the valve v.
Of the numerous forms of kier in use, the injector kier is the one most generally adopted.
Dave read the instructions, set the injector for the weight he'd been told, and triggered it into the side of the Ranger's neck.
Dave rummaged through the medical supplies, brought out an injector of quidine.
The long gradient up to Eaton was run at just under 10 miles per hour, the steam blowing off freely with injector full on and damper three-quarters closed nearly all the last mile-and-a-half.
The double tube injector is not commonly used on farm engines, however.
The pump is to be used when the engine is running, and the injector when the engine is closed down.
It may take some patience to get the injector started, and you should carefully follow the directions previously given and those which apply especially to the type of injector used.
Set the injector as low as possible, as it works best with smallest possible lift.
In a steady stream, by use of a pump or injector working continuously and supplying just the amount of water required.
Care should be taken that the injector is not so near the boiler as to become heated, else it will not work.
The injector is regulated by the amount of water admitted.
Of course you must be sure that all joints are air-tight, else the injector will not work under any conditions.
In order that the injector may work, its parts must be nicely adjusted, and with varying steam pressures it takes some ingenuity to get it started.
Starting aninjector always requires some skill, and injectors differ.
Cross-head pump and injector are used, and Pickering governor with improved spring speeder, permitting quick and easy change of speed; also Sawyer's lever for testing safety.
The pump is most economical, because it permits the heat in the exhaust steam to be used to heat the feed water, while the injector heats the water by live steam.
To prevent water from returning back into pump or injector which feeds the boiler.
This need not be a large bore pipe, as the glycerine is generally added to the mixed acids in a thin stream (an injector is often used).
The manufacturers of the injector thought it ought to be large enough, and so did we.
We furnished an injector for one of the above dimensions, capable of throwing 900 gallons per hour.
The automatic working of this injector is of very great advantage, as by this mechanical construction it works under all conditions of shakes, jars, and concussions.
The inventor seems to have combined common sense with mechanical science, by leaving out all complications, and combining in the injectorevery convenience of operating, getting at, and putting it on the boiler.
The inventor and manufacturers of the Penberthy injector have great confidence in its working qualities, and to satisfy engineers of its merits and perfectness of work, solicit a trial.
The working parts of this injector are stationary in their work, thereby causing comparatively no wear in its mechanical parts.
The injector is operated by the opening or closing of the globe valves.
Another great point gained in thisinjector is its great range of working capacity.
Why is it that an injector can force water into a boiler from which the steam comes to work the injector at a greater pressure than is in the boiler?
The noise created by the injector while working being very objectionable, could it be mitigated?
Yes; I succeeded in quieting an injector in one establishment where anything louder than the scratching of a goose-quill was considered a nuisance.
I first began by putting a piece of paper against the mouth of the overflow pipe while the injector was working, and the noise ceased, but soon after that the paper was sucked up into the injector.
When the injector was first invented it seemed so impossible for it to work that engineers would not accept it until it had repeatedly demonstrated its operativeness.
It may seem at first as if the work done by the engine in compressing the air in the cylinder and in operating the injector pump represents so much loss, but a moment’s consideration will show that it is all recovered.
A sectional view of a Giffard injector is shown in Figure 45.
If, however, you only expect to stop a minute or two, drop your damper, and start your injector if you have one.
The Penberthy is made by The Penberthy Injector Co.
The injector should not be placed too near the boiler, as the heat from it will make it difficult to start the injector each time after it has been standing idle.
You will understand, therefore, that the injector is intended principally for an emergency rather than for general use.
When the exact quantity of water consumed per hour is known it can be easily determined from the capacities given in the price lists which sized injector must be selected.
In replying to these letters I recommend one of three or four different makes (all of which I had found satisfactory) with a request that the party asking for same should write to me if the injector proved unsatisfactory in any way.
The capacity of an injector is always decreased as the lift is increased, or the feed water heated.
If the feed water is heated, a greater steam pressure is required to start the injector and it will not work with as high steam pressure.
It should always be kept in order, for, should the pump refuse to work, you have only to start your injector and use it until such time as you can remedy the trouble.
The injector heats the water almost as hot as the heater.
There are other makes that require, first: that the injector be given steam and then the water.
In most plants, an injector would not be economical, as the water fed by such means must be cold, a fact which makes impossible the use of a heater before the water enters the injector.
Injector feeding water at | | | | 150 degrees without a heater | .
Feeding of Water--The choice of methods to be used in introducing feed water into a boiler lies between an injector and a pump.
It will be noted that when feeding cold water direct to the boilers, the injector has a slightly greater economy but when feeding through a heater, the pump is by far the more economical.
Such a heater might be installed between the injector and the boiler but as heat is added to the water in the injector, the heater could not properly fulfill its function.
Whenever possible, a waterinjector should be used as it does not corrode and assists in maintaining the delivery pipes free from sludge.
Both orifices discharge into a common feed box G from which the mixture is carried by the water injector J through one of duplicate feed pipes and discharged into the suction well through a perforated pipe.
The caustic liquor, usually run to waste from the cathodic compartment, could be delivered into a feed box from which it would be drawn off by the water injector used for dissolving the chlorine gas.
It is then filtered, and passes to the furnace injector C at about 30-lb.
The injector is on the Korting principle, that is, it atomizes by fracture of the liquid oil arising from its own momentum under pressure.
With the pump in his right hand (granting that he is using the aspirator and injector pump), he stands at the head of the subject and slowly injects the fluid.
The pressure should be gentle and regular when the aspirator and injector pump is used.
Either the trocar or the drainage tube is connected by rubber tubing, to the goose neck on the blood bottle, which in turn is connected by rubber tubing to the aspirator side of the aspirator and injector pump.
Rathburn; was walking by engine, engineman started the injector and threw hot water on Jennings.
Willard, engineman, injured July 22, 4 miles west of Janesville; injector on engine No.
As the injectorwill last for years, and several neighbors might join in the purchase and use of one instrument, its cost would practically not influence this estimate of the cost of killing the maggots.
The Giffard Injector takes a jet of steam from the boiler, and causes it to lift the water in an external pipe, and blow it directly into the boiler against its own pressure.
Among other important improvements in the steam engine are those for replenishing the water in the boiler, and the Giffard Injector is the simplest and most ingenious of all boiler feeds.
With the replaceable head a definite pressure of oxygen is required for the size being used, this pressure being the one for which the injector and corresponding mixing chamber were designed in producing the correct mixture.
The volume of gas drawn into the mixing chamber depends on the size of the injector openings and the pressure of the oxygen.
The air line is often dispensed with, allowing the gas to draw air into the burner on the injector principle, much the same as with illuminating gas burners for use with incandescent mantles.
This type depends for a perfect mixture of gas upon the principle of the injector just as it is applied in steam boiler practice.
Another form of low pressure torch operates on the injector principle, but the injector itself is a permanent part of the torch, the nozzle only being changed for different sizes of work and flame.
There is a very slight injector action as the fast moving stream of oxygen tends to draw the acetylene from the side openings into the chamber, but the operation of the torch does not depend on this action to any extent.
The injector is placed in or near the handle and its opening is the largest required by any work that can be handled by this particular torch.
Low Pressure Torch with Separate Injector Nozzle] The oxygen enters the head at considerable pressure and passes through its tube to a small jet within the head.
The injector will lift water several inches, but it always works better if the water can flow into it freely.
The injector can be fastened to side of boat by brass band and screws, and the water-supply pipe brought through the side and riveted, as in the case with the pump.
The injector was an accidental discovery by a Mr. Gifford, and has now become a universal favourite on board both large and small craft, as it works splendidly without affecting the engine.
This injector may be so adjusted that when the steam in the boiler rises above a certain predetermined point, say 300 lbs.
Cost prevented the scheme being carried out, and Giffard went on designing small steam engines until his invention of the steam injector gave him the funds to turn to dirigibles again.
With such narrow orifices it is clear that any small solid particles which may find their way into the spray injector along with the petroleum will foul the nozzle and check the fire.
Bray has patented a modification of the Naphey injector tip, which is shown in Fig.
Fouché, however, has since found the duty, per cubic foot of neat acetylene consumed in a twin injector burner at the most advantageous rate of 3.
In the original Billwiller burner, the injector gas orifice was brought centrally under a somewhat larger hole drilled in a separate sheet of platinum, the metal being so carried as to permit entry of air.
Non-injector burners should not be used unless special care is taken to insure that the installation is consistently operated in an efficient manner in these respects.
Subsequent experience has demonstrated the possibility of constructing non-injector burners such as that shown in Fig.
If the two streams of gas impinge at an angle of 90°, twin-injector burners for acetylene appear to work best when the gas enters them at a pressure of 2 to 2.
Other attempts were made by placing two non- injector jets in such mutual positions that the two streams of gas met at an angle, there to spread fan-fashion into a flat flame.
The closed overflow injector was new to me; it had "broke," and was blowing steam back to the tank that I thought was putting water into the boiler.
The nozzle is practically an injector of special form.
Injector kiers are made to work either under a pressure of 40 lb.
So long as the goods in the kiers are not allowed to get dry there is no risk of damage; this trouble rarely arises with the Barlow and injector kiers.
The process is as follows: The hot alkali solution is circulated by means of a distributing pipe through the action of an injector or centrifugal pump to scour the yarn; then water is circulated by means of a centrifugal pump for washing.
Many forms of kiers have been devised, but the one in most general use is that known as the "injector kier," of which a drawing is given in Fig.
By means of a lever the injectoris set at work, a vacuum created in the vacuum and receiving chambers, the consequence being that dye-liquor is drawn from the vat through the cops in the dye-chamber into the receiving chamber.
Then there is a large vacuum chamber, in which by means of an injector a vacuum can be formed, this directly communicates with a liquor-receiving chamber which again in turn is in communication with the upper part of the dye-chamber.
The length of the boil depends upon the kiers; with the open kier about ten hours are usually given, with the Barlow and injector kiers, working at a pressure of 40 lb.
Injector kiers consist of a hollow, upright iron cylinder made of plates riveted together; the top is made to lift off, but can be fastened down tightly by means of bolts and nuts as shown in the drawing.
The length of boil averages about four hours, certainly not less than three should be given, and it is not necessary to give more than five hours in either ordinary kiers, with central puffer pipe, or in injector kiers.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "injector" in a variety of sentences. We hope that you will now be able to make sentences using this word.
