SU1504367A2 - Pump priming system - Google Patents

Abstract

The invention makes it possible to increase the reliability of the pump priming system by arranging an additional feed for a liquid ring pump from a source of pumped liquid. The system is equipped with a pipeline (T) 5 with diaphragm (D) 6 installed on it and a check valve (K) 7, through which line 8 connecting the vacuum pump 2 with the internal cavity of the pump (H) 1 is connected to source 9. When operation of the system, air is pumped out of H 1 by means of a vacuum pump 2. In this case, part of the liquid (L) is supplied through the dynamic pressure pipe 4 from the liquid ring to the H 1 glands. At the same time, T 5 through D 6 and K 7 L from source 9 are fed to suction of the vacuum pump 2. In this way, the leakage of the liquid from the circulation circuit of the liquid is compensated bone ring pump and eliminates the possibility of emptying the circulation tank. 1 il.

Description

I

(61) 1359488

(21) 4264678 / 25-29

(22) 06/18/87

(46) 08/30/89. Bup. Number 32

(71) Volzhsky branch of the Design and Technology Center Avtomatizattsi and Metrology

(72) E.G. Weights

(53) 621.671 (088.8)

(56) USSR Author's Certificate No. 1359488, cl. F 04 D 9/00, 1986.

(54) PUMP FILLING SYSTEM

(57) The invention makes it possible to increase the reliability of the pump priming system by arranging an additional feed for the liquid ring pump from the source of pumped liquid. The system is equipped with a pipeline (t) 5 with diaphragm (D) 6 installed on it and a check valve (k) 7, through which line 8 connecting the vacuum pump 2 with the internal cavity of the pump (H) 1 is connected to source 9. When operation of the system, air is pumped out of H 1 by means of a vacuum pump 2. In this case, part of the liquid (L) is supplied through the dynamic pressure pipe 4 from the liquid ring to the H 1 glands. At the same time, T 5 through D 6 and K 7 L from source 9 are fed to vacuum pump 2. So the leakage of the liquid from the circulation circuit is compensated for. an oil ring pump and eliminates the possibility of emptying the circulation tank. 1 il.

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The invention relates to pump construction, in particular, to systems for preparing pumps for start-up, and is in addition to auth. 1359488.

The purpose of the invention is to increase the reliability of the system by organizing an additional feed of the liquid ring pump from the source of pumped liquid.

The drawing shows a schematic diagram of the device.

The filling system of the pump 1 contains a vacuum pump 2 connected to the internal cavity of the pump 1, and a pipe 3 for supplying fluid to the pump 1 oil seals. The system is equipped with a dynamic head pressure receiving pipe 4, and the vacuum pump 2 is designed as a liquid ring pump, With this, the tube 4 for receiving the dynamic head is installed in its drain hole and is connected to the pipeline 3 for supplying fluid to the glands. In addition, the system is equipped with pipeline 5 with diaphragm 6 mounted on it and non-return valve 7. Line 8 connecting the liquid ring pump 2 to the internal cavity of pump 1 is connected to source 9 of pumped liquid via pipeline 5. The system also contains a circulation tank 10 and the valve 11 installed on the pipeline 3.

The system works as follows.

When it is necessary to fill the pump 1, a liquid ring vacuum pump 2 is put into operation, which pumps out air from the internal cavity of the pump 1. At the same time, the latter is filled with liquid through the suction pipelines.

At the same time, under the action of the dynamic pressure in the liquid ring of the vacuum pump 2, the liquid through the dynamic pressure pipe 4 and the pipe 3 enters the seals of the pump 1. This reduces the flow of air into the internal cavity of the pump 1, reducing the energy and time required for priming.

The flow of fluid through the seals of pump 1 through conduit 3 leads to a decrease in the level of fluid in the circulation tank 10. When the critical value of this level is reached, valve 11 closes (manually or automatically) valve 11, stopping leakage of fluid from pump 2.

Due to the vacuum in the suction of pump 2, the liquid flows from tank 9 through line 5 through diaphragm 6 and check valve 7 through line 8 and further through pump 2 to circulation tank 10. When the required level of liquid is restored, valve 11 is opened in it, restoring the most fluid in the pump seals 1.

Claims (1)

Invention Formula System of filling of the pump on the bus. St. No. 1359488, characterized in that, in order to ensure the reliability of the system by organizing an additional feed liquid-ring pump from a source of pumped liquid, it is equipped with an additional pipeline with a diaphragm installed on it and a check valve, while connecting the liquid ring pump with an internal cavity of the pump, connected to the source of the pumped liquid through an additional pipeline.