GPD 08-VR

GPD 08-VR

MULTI PUMP EDUCATIONAL UNIT

This pump test unit consists of a metal stand incorporating water pumps, tick liquid pumps and a vacuum pump. Relevant water tank, thick liquid tank and control board are situated on both sides of the test unit.

PUMPS Three types of pump are in use on this unit: water pumps, thick liquid pumps and vacuum pump. Water pump models are as follows: one piston pump with plunger, one centrifugal multi-stage pump and two centrifugal single-stage pumps, the latter suitable to operate both in series and parallel.

Thick liquid pump models are as follows: a double-geared pump, a variable speed eccentric gear pump and a metering pump with variable rate of-flow.

The vacuum pump, of liquid ring type, is connected to both lower water and thick liquid tanks for the purpose of carrying out operation tests on the two types of pumps with variable negative head suction.

Water circuit can be preheated through electric resistances situated in the lower water tank and controlled by a thermostat. This preheating serves for executing tests on pumps supplied with water at different temperature values. The tick liquid pumps are used to control operation ratings of pumps essentially of volumetric nature as they often are and with flow rates even very small. These flow rates can be measured through an appropriate tank with minor capacity, which is contained inside the upper tank for thick liquids.

Thick liquid pumps can be eventually used also for the supply of oil-hydraulic circuit systems that are outside from the unit.

I - 16153 P.D. da Bissone 36r. GENOA - ITALY - Tel.: +39 010 6501969 Fax: +39 010 6501969 e-mail: patrone@ giacomopatrone.com http://www.giacomopatrone.com

GPD 08-VR

WATER AND THICK LIQUIDS TANKS The water tank assembly is made up of two distinct sub-tanks. The upper one is permanently communicating with the atmosphere, while the lower one may be put into communication with atmosphere or tightly closed and connected with the vacuum pump. All tanks are provided with graduated level gauge. Both tanks are connected to the water pumps through valves and gates and can also be interconnected so to constitute a single water tank assembly when long duration test are required. For this purpose a flow meter for instant flow rate measurement and a water meter are mounted on the general header on the pressure flow side of pumps. Two 6 kW electric resistances haven been arranged in the lower tank to provide water pre-heating.

The thick liquid tanks have been designed and developed with the same features of those for water. The upper one also includes a smaller capacity tank for small flow rate measurement which can be observed on an appropriate gauge.

CONTROL BOARD The control board comprises, further to electrical equipment for control and operation of pumps, resistances and ancillaries, also the following instruments: ¾ Pressure gauge for water pumps ¾ Pressure gauge for thick liquid pumps ¾ Vacuum gauge ¾ Pre-heated water thermometer ¾ Electric motor speed regulator for water pumps (optional) ¾ Double scale ammeter ¾ Voltmeter ¾ Wattmeter.

The last three instruments listed above may be switched-in on the electric circuit of each single pump consequently indicate the values of power absorbed by the motor for each pump.

OUTSIDE USERS Through appropriate connection means, all the pumps may be used both for suction and pressure operation, with users that are external to the test unit. These are: emptying and replenishment of tanks, feed operation for other didactic equipment, heat exchangers, etc.

TYPICAL EXPERIMENTS PERFORMED WITH THE DIDACTIC PUMPS UNIT G.P.D.08-V.R. ¾

Plotting characteristic curves relevant to liquid pumps under operational conditions as follows:

1. suction with positive head conditions 2. suction with variable negative head conditions obtained by the production of various vacuum grades in the suction tank 3. operation with water at ambient temperature 4. operation with heated water 5. operation with suction at negative head conditions and heated water 6. comparison approach of behaviours of different types of pumps under the above mentioned operating conditions 7. possibility of carrying out long-terms tests through water circulation in closed circuit system ¾

Analysis of operating characteristics of liquid ring vacuum pumps.

I - 16153 P.D. da Bissone 36r. GENOA - ITALY - Tel.: +39 010 6501969 Fax: +39 010 6501969 e-mail: patrone@ giacomopatrone.com http://www.giacomopatrone.com

GPD 08-VR

The multipump test unit type GPD08-VR is the most complete plant for laboratory investigation on the characteristics, differences and use of the most common type of pumps normally present in industrial and civil applications.

In order to meet different and more particular needs, the same design and lay out of the GPD 08VR can be arranged in reduced-simplified versions equipped with the following pumps:

WATER PUMPS TEST UNITS

PISTON PUMP TEST UNIT Unit suitable for the study of the characteristics of a high pressure piston pump.

It includes: ¾ One piston pump ¾ One liquid ring vacuum pump ¾ High pressure delivery piping with pressure safety by-pass valve. ¾ Water tank assembly made up of two distinct sub-tanks. The upper one is permanently communicating with the atmosphere, while the lower one may be put into communication with atmosphere or tightly closed and connected with the vacuum pump. All tanks are provided with graduated level gauge. Both tanks are connected to the water pump through valves and gates and can also be interconnected so to constitute a single water tank assembly when long duration test are required. For this purpose a flow meter for instant flow rate measurement and a water meter are mounted on the general header on the pressure flow side of pumps. Two 6 kW electric resistances haven been arranged in the lower tank to provide water pre-heating.

The control board for control and operation of pumps, resistances, including also the following instruments: ¾ Pressure gauge for piston pumps ¾ Vacuum gauge ¾ Pre-heated water thermometer ¾ Double scale ammeter ¾ Voltmeter ¾ Wattmeter.

EXPERIMENTS Plotting characteristic curves relevant to piston pump under operational conditions as follows: ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾

suction with positive head conditions suction with variable negative head conditions obtained by the production of various vacuum grades in the suction tank operation with water at ambient temperature operation with heated water operation with suction at negative head conditions and heated water pressure safety valve regulation exercises possibility of carrying out long-terms tests through water circulation in closed circuit system Analysis of operating characteristics of liquid ring vacuum pumps.

I - 16153 P.D. da Bissone 36r. GENOA - ITALY - Tel.: +39 010 6501969 Fax: +39 010 6501969 e-mail: patrone@ giacomopatrone.com http://www.giacomopatrone.com

GPD 08-VR

MULTISTAGE PUMP TEST UNIT Unit suitable for the study of the characteristic of a multistage centrifugal pump for water.

It includes: ¾ One multistage centrifugal pump ¾ One liquid ring vacuum pump ¾ Multistage pump speed regulator for varying continuously the pump speed. ¾ Water tank assembly made up of two distinct sub-tanks. The upper one is permanently communicating with the atmosphere, while the lower one may be put into communication with atmosphere or tightly closed and connected with the vacuum pump. All tanks are provided with graduated level gauge. Both tanks are connected to the water pump through valves and gates and can also be interconnected so to constitute a single water tank assembly when long duration test are required. For this purpose a flow meter for instant flow rate measurement and a water meter are mounted on the general header on the pressure flow side of pumps. Two 6 kW electric resistances haven been arranged in the lower tank to provide water pre-heating.

The control board for control and operation of pumps, resistances and speed regulator, including also the following instruments: ¾ Pressure gauge for water pumps ¾ Vacuum gauge ¾ Pre-heated water thermometer ¾ Electric motor speed regulator for multistage pump ¾ Double scale ammeter ¾ Voltmeter ¾ Wattmeter.

EXPERIMENTS Plotting characteristic curves relevant to multistage water pump under operational conditions as follows: ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾

suction with positive head conditions suction with variable negative head conditions obtained by the production of various vacuum grades in the suction tank operation with water at ambient temperature operation with heated water operation with suction at negative head conditions and heated water detection of relevant pressure between two stages possibility of carrying out long-terms tests through water circulation in closed circuit system Analysis of operating characteristics of liquid ring vacuum pumps.

I - 16153 P.D. da Bissone 36r. GENOA - ITALY - Tel.: +39 010 6501969 Fax: +39 010 6501969 e-mail: patrone@ giacomopatrone.com http://www.giacomopatrone.com

GPD 08-VR

SINGLE STAGE CENTRIFUGAL PUMPS TEST UNIT – SERIES AND PARALLEL Unit suitable for the study of the characteristic of single stage centrifugal pump for water.

It includes: ¾ two single stage centrifugal pump ¾ One liquid ring vacuum pump ¾ Tubing and valves system for connection of the two pumps in series, parallel or single operation. ¾ Water tank assembly made up of two distinct sub-tanks. The upper one is permanently communicating with the atmosphere, while the lower one may be put into communication with atmosphere or tightly closed and connected with the vacuum pump. All tanks are provided with graduated level gauge. Both tanks are connected to the water pump system through valves and gates and can also be interconnected so to constitute a single water tank assembly when long duration test are required. For this purpose a flow meter for instant flow rate measurement and a water meter are mounted on the general header on the pressure flow side of pumps. Two 6 kW electric resistances haven been arranged in the lower tank to provide water pre-heating.

The control board for control and operation of pumps, resistances and speed regulator, including also the following instruments: ¾ Pressure gauge for water pumps ¾ Vacuum gauge ¾ Pre-heated water thermometer ¾ Double scale ammeter ¾ Voltmeter ¾ Wattmeter.

EXPERIMENTS Plotting characteristic curves relevant to single stage centrifugal pump water pump under operational conditions as follows: ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾

operation of the two pumps in series operation of the two pumps in parallel suction with positive head conditions suction with variable negative head conditions obtained by the production of various vacuum grades in the suction tank operation with water at ambient temperature operation with heated water operation with suction at negative head conditions and heated water detection of relevant pressure between the two pumps and at suction possibility of carrying out long-terms tests through water circulation in closed circuit system Analysis of operating characteristics of liquid ring vacuum pumps.

CENTRIFUGAL WATER PUMPS TEST UNIT – SINGLE AND MULTI STAGE Including one multistage centrifugal pump, two single stage centrifugal pump and one vacuum pump.

Technical features, arrangement and experiments as per GPD 02-VA and GPD 03-VA

WATER PUMPS TEST UNIT – SINGLE - MULTI STAGE and PISTON Including one multistage centrifugal pump, two single stage centrifugal pump, one piston pump and one vacuum pump.

Technical features, arrangement and experiments as per GPD 01-VA, GPD 02-VA and GPD 03-VA.

I - 16153 P.D. da Bissone 36r. GENOA - ITALY - Tel.: +39 010 6501969 Fax: +39 010 6501969 e-mail: patrone@ giacomopatrone.com http://www.giacomopatrone.com

GPD 08-VR

THICK LIQUID PUMPS TEST UNITS DOUBLE GEARED PUMP Unit suitable for the study of the characteristic of double geared pump for thick liquids, generally used for pressure oil circuits.

It includes: ¾ double geared pump ¾ One liquid ring vacuum pump ¾ Tubing and valves system for connection of the pump to the oil tanks ¾ Oil tank assembly made up of two distinct sub-tanks. The upper one is permanently communicating with the atmosphere, while the lower one may be put into communication with atmosphere or tightly closed and connected with the vacuum pump. The tanks are provided with graduated level gauge.

Both tanks are connected to the double geared pump system through valves and gates and can also be interconnected so to constitute a single tank assembly when long duration test are required The upper tank includes a smaller capacity tank for small flow rate measurement which can be observed on an appropriate gauge.

The control board for control and operation of pumps, including also the following instruments: ¾ Pressure gauge for double geared pump ¾ Vacuum gauge ¾ Double scale ammeter ¾ Voltmeter ¾ Wattmeter. ¾ Electric motor speed regulator for the double geared pump (optional) EXPERIMENTS Plotting characteristic curves relevant to double geared pump under operational conditions as follows: ¾ ¾ ¾ ¾ ¾ ¾

suction with positive head conditions suction with variable negative head conditions obtained by the production of various vacuum grades in the suction tank operation with suction at negative head conditions detection of relevant pressure possibility of carrying out long-terms tests through oil circulation in closed circuit system Analysis of operating characteristics of liquid ring vacuum pumps.

I - 16153 P.D. da Bissone 36r. GENOA - ITALY - Tel.: +39 010 6501969 Fax: +39 010 6501969 e-mail: patrone@ giacomopatrone.com http://www.giacomopatrone.com

GPD 08-VR

METERING PUMP WITH VARIABLE DELIVERY The metering pumps are suitable to deliver small quantities of liquids, even very thick, and their study is interesting for the high precision of the quantity delivered and the possibility of varying the quantity pumped.

This type of pump find wide application in the chemical industry, food technology, pharmaceutical and it is a genuine volumetric pump with high possibility of flow regulation.

The unit includes: ¾ metering pump with variable delivery ¾ One liquid ring vacuum pump ¾ Tubing and valves system for connection of the pump to the oil tanks ¾ Oil tank assembly made up of two distinct sub-tanks. The upper one is permanently communicating with the atmosphere, while the lower one may be put into communication with atmosphere or tightly closed and connected with the vacuum pump. The tanks are provided with graduated level gauge.

Both tanks are connected to the double geared pump system through valves and gates and can also be interconnected so to constitute a single tank assembly when long duration test are required The upper tank includes a smaller capacity tank for small flow rate measurement which can be observed on an appropriate gauge.

The control board for control and operation of pumps, including also the following instruments: ¾ Pressure gauge for double geared pump ¾ Vacuum gauge ¾ Double scale ammeter ¾ Voltmeter ¾ Wattmeter. ¾ Electric motor speed regulator for the double geared pump (optional) EXPERIMENTS Plotting characteristic curves relevant to the metering pump under operational conditions as follows: ¾ ¾ ¾ ¾ ¾ ¾

suction with positive head conditions suction with variable negative head conditions obtained by the production of various vacuum grades in the suction tank operation with suction at negative head conditions detection of relevant pressure possibility of carrying out long-terms tests through oil circulation in closed circuit system Analysis of operating characteristics of liquid ring vacuum pumps.

THICK LIQUID PUMPS TEST UNIT WITH DOUBLE GEARED PUMP AND METERING PUMP WITH VARIABLE DELIVERY This unit includes one double geared pump, one metering pump and one vacuum pump.

Technical features, arrangement and experimental capabilities as per GPD 1-VO and GPD 2-VO. Other type of volumetric pumps available upon request.

I - 16153 P.D. da Bissone 36r. GENOA - ITALY - Tel.: +39 010 6501969 Fax: +39 010 6501969 e-mail: patrone@ giacomopatrone.com http://www.giacomopatrone.com