GB1589669A - Device for transferring liquids - Google Patents

Description

(54) DEVICE FOR TRANSFERRING LIQUIDS (71) We, VIKTOR ALEXEEVICH BERBER, VLADIMIR IVANOVICH MOZYAKOV, ALEXANDR PAVLOVICH SHMYGLYA, IGOR MIKHAILOVICH LAPSHEV and JURY IOSIFOVICH KRASNOV, all citizens of Union of Soviet Socialists Republics (USSR) all respectively of kv.65,184 Shelkovichnaya ulitsa, kv.47,190 Shelkovichnaya ulitsa, kv.3 24/32 Sakko-Vantsetti ulitsa, kv. 13, 21, VLKSM let 20 ulitsa and kv. 51, 182 Shelkovichnaya ulitsa, all in Saratov, USSR., do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: - The present invention relates to devices for transferring liquids.

It is most expedient to use the device for transferring liquids, according to the present invention, in industrial enterprises for filling containers of hydraulic systems, machines test benches etc.

In addition, such devices can be used for filling fuel tanks of the various meeans of transportation.

The disclosed device can also be used in farming for transferring liquid from ponds to watering sites in watering systems.

In accordance with the present invention we provide a device for transferring liquids, comprising; a pump whose inlet and outlet are communicated via first and second continuous or unbroken pipelines with a feed tank for a liquid being transferred and with a consumer, respectively; a container filled with a liquid for priming the pump and the top and bottom portions whereof communicate with the first pipeline; a pipe designed for drawing off a gaseous medium from the space above liquid level in said container, one end of said pipe being connected with the topmost point of the container and the other end thereof being introduced into one of said pipelines downstream of the container in the direction of liquid flow so that the gaseous medium is drawn off from the container space to the pipeline and is carried away by the liquid flow.

It is expedient that the other end of the pipe should be introduced into the first pipe-line.

The other end of the pipe is coupled in this manner in case the pump is combined with a purifying unit such as a centrifuge (i.e., when the device of the invention is used for transferring with simultaneous purification) so that the liquid discharged from the pipe on completion of the process of drawing off the gaseous medium from the container should be supplied to the inlet of the pump-purifier for being purified.

It is likewise expedient that the other end of the pipe should be introduced in the second pipeline.

The other end of the pipe is connected in this latter manner in case it is necessary to transfer a liquid without purifying the latter.

The device for transferring liquids, according to the present invention, while being relatively simple of design, ensures a stable operation of the pump at the maximum capacity thanks to an efficient and complete removal of the gaseous medium from the container filled with liquid for priming the pump.

The present invention will be better understood upon considering the following description of preferred embodiments thereof with due reference to the accompanying drawings, in which: Figure 1 shows diagrammatically a device for transferring liquids, according to the invention, with a pipe introduced with its other end into a horizontal portion of a first continuous or unbroken pipeline serving to communicate a pump with a feed tank; Figure 2 - ditto, with the pipe introduced with its other end into an upward portion of the first pipeline serving to communicate the pump with the feed tank; and Figure 3 - ditto, with the pipe introduced with its other end into a second continuous or unbroken pipeline serving to communicate the pump with the consumer.

Referring now to Figure 1 of the drawings, the herein disclosed device for transferring liquids comprises a pump 1 (combined with a purifier) whose inlet is connected to one end of a first continuous or unbroken pipeline 2, the other end of said first pipeline being immersed in a feed tank 3 of liquid being transferred. The pump outlet is communicated via a second continuous or unbroken pipeline 4 with a consumer 5. Connected to the first pipeline 2 via connecting pipes 6 and 7 is a container 8 filled with a liquid for priming the pump 1. The connecting pipe 6 is connected to the container 8 in the top portion thereof, and the connecting pipe 7 - in the bottom portion.For drawing off a gaseous medium from the space of the container 8, use is made of a pipe 9 connected with its one end to the container 8 in the topmost point thereof and, with its other end introduced into the first pipeline 2 in the horizontal portion thereof downstream of the container 8 in the direction of the liquid flow. Therefore, the gaseous medium is delivered from the container 8 into the first pipeline 2 and, together with the liquid flow, to the pump 1.

It is possible to introduce the other end of a pipe 11 (FIgure 2) in an upward portion 12 of the first pipeline 2.

A container 13 is mounted on the first pipeline 2 so that said pipeline 2 passes thereinside.

The first pipeline 2 is communicated via connecting pipe 14 with the top portion of the container 13 and, via opening 15, with the bottom portion of the container 13. One end of the pipe 11 is connected to the topmost point of the container 13.

When transferring a liquid without purification, a pipe 16 (Figure 3) for drawing off the gaseous medium is coupled with its one end to the topmost point of the container 13, and with its other end - to a second pipeline 17 connected to the outlet of a pump 18 and to the consumer 5 (Figure 1). At the place of introduction of the other end of the pipe 16 (Figure 3) into the second pipeline 17 provision is made of a local narrowing 19 of the cross-section of the second pipeline 17. Such a narrowing makes for an increased efflux velocity of liquid at the place of introduction of the other end of the pipe 16, this resulting in an increased rate of drawing off the gaseous medium from the container 13 and, consequently, in a reduced time required for the pump 18 to reach its maximum capacity.

The device for transferring liquid according to the invention operates in the following manner.

The container 8 (Figure 1) and, consequently, the portions 10, 12 (Figure 2) of the first pipeline 2 between the container 8 and pump 1 (combined with a purifier), are filled with liquid. The actuation of the pump 1 initiates the drawing off of the liquid from the container 8 via connecting pipe 7. A decrease in the liquid level in the container 8 causes the transfer to its top portion of the air from a portion 20 (Figure 1) of the first pipeline 2 via connecting pipe 6. This gives rise to a vacuum in the container 8 and first pipeline 2 communicated therewith. Under the effect of vacuum, the liquid from the feed tank 3 starts rising in the portion 20 of the first pipeline 2.

A further decrease of the liquid level in the container 8 brings the degree of vacuum in the latter and in the first pipeline 2 communicated therewith to a value sufficient for the inleakage of the liquid from the feed tank 3 via first pipeline 2 to the pump 1. There forms a continuous (integral) flow of liquid in the first pipeline 2, while the gaseous zone formed in the top portion of the container 8 owing to the transfer of air from the first pipeline 2 contacts the flow of liquid in the first pipeline 2 via the connecting pipe 6. Thanks to the setting up in the first pipeline 2 of a continuous flow of liquid being transferred, a stable (without pulsations) pump opera tion is attained, featuring a capacity close to the rated.

Upon the passage of liquid through the place where the other end of the pipe 9 is introduced into the horizontal portion 10, there generates in this place an additional (with respect to the remaining portions of the first pipeline 2 and container 8) evacuation due to a local increase in the efflux velocity of the liquid. As a result, the gaseous medium from the top portion of the container 8 is drawn off, via pipe 9 connected with its one end to the topmost point of the container 8, to the horizontal portion 10 of the first pipeline 2 and transferred (with simultaneous purification) via pump 1 to the second pipeline 4 and to the consumer 5.The replenishment of the gaseous zone in the top portion of the container 8 with gases from the liquid being transferred takes place at a relatively low rate owing to the small section of the connecting pipe 6 through which said replenishment occurs.

Therefore, the drawing off rate of the gaseous medium exceeds considerably the rate at which the top portion of the container 8 is replenished with gases, this ensuring a rapid and complete removal of the gaseous medium from the top portion of the container 8 and the filling of said space with the liquid being transferred from the first pipeline 2 via connecting pipe 6. After that, the capacity of the pump 1 reaches its rated value. Thereupon, there takes place a continuous efflux via pipe 9 of some part of the liquid in parallel with the first pipeline 2.In the case of the structural embodiment of the device for transferring liquids, as shown in Figure 2, the operating principle of the device is analogous to that described hereinabove except that the initial drawing off of the liquid from the container 13 takes place via opening 15, the air is transferred from the first pipeline 2 to the container 13 via connecting pipe 14, and the other end of the pipe 11 is introduced in the upward portion 12 of the first pipeline 2, which, as in the former case, ensures the displacement of the drawn off gaseous medium, along with the flow of liquid being transferred, via first pipeline 2 to the pump 1.

When transferring the liquid by the pump 18 (Figure 3) via the second pipeline 17, a higher (as compared to the afore-described embodiments of the device) additional degree of evacuation is observed in the portion 19 where the other end of the pipe 16 is introduced into the second pipeline 17, owing to a local narrowing of the second pipeline 17 over the portion 19, and, consequently, a higher efflux velocity of the liquid. This results in an increased rate of drawing off the gaseous medium from the container 13 and, consequently, in a reduced time required for the pump 18 to reach its maximum capacity.

WHAT WE CLAIM IS: 1. A device for transferring liquids, comprising a pump whose inlet and outlet are com- municated via first and second continous or unbroken pipelines with a feed tank for a liquid being transferred and with a consumer, respectively; a container filled with a liquid for priming the pump and the top and bottom portions whereof communicate with the first pipeline; a pipe designed for drawing off a gaseous medium from the space above liquid level in said container, one end of said pipe being connected with the topmost point of the container and the other end thereof being introduced into one of said pipelines downstream of the container in the direction of liquid flow so that the gaseous medium is drawn off from the container space to the pipeline and is carried away by the liquid flow.

2. A device as claimed in Claim 1, wherein the other end of the pipe is introduced into the first pipeline.

3. A device as claimed in Claim 1, wherein the other end of the pipe is introduced into the second pipeline.

4. A device for transferring liquids, substantially as hereinbefore described with reference to Figure 1 of the accompanying drawings.

5. A device for transferring liquids, substantially as hereinbefore described with reference to Figure 2 of the accompanying drawings.

6. A device for transferring liquids, substantially as hereinbefore described with reference to Figure 3 of the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. the liquid. This results in an increased rate of drawing off the gaseous medium from the container 13 and, consequently, in a reduced time required for the pump 18 to reach its maximum capacity. WHAT WE CLAIM IS:

1. A device for transferring liquids, comprising a pump whose inlet and outlet are com- municated via first and second continous or unbroken pipelines with a feed tank for a liquid being transferred and with a consumer, respectively; a container filled with a liquid for priming the pump and the top and bottom portions whereof communicate with the first pipeline; a pipe designed for drawing off a gaseous medium from the space above liquid level in said container, one end of said pipe being connected with the topmost point of the container and the other end thereof being introduced into one of said pipelines downstream of the container in the direction of liquid flow so that the gaseous medium is drawn off from the container space to the pipeline and is carried away by the liquid flow.

2. A device as claimed in Claim 1, wherein the other end of the pipe is introduced into the first pipeline.

3. A device as claimed in Claim 1, wherein the other end of the pipe is introduced into the second pipeline.

4. A device for transferring liquids, substantially as hereinbefore described with reference to Figure 1 of the accompanying drawings.

5. A device for transferring liquids, substantially as hereinbefore described with reference to Figure 2 of the accompanying drawings.

6. A device for transferring liquids, substantially as hereinbefore described with reference to Figure 3 of the accompanying drawings.