EP2924286B1 - Dispositif de vérification de pompes - Google Patents

Dispositif de vérification de pompes Download PDF

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Publication number
EP2924286B1
EP2924286B1 EP15161152.2A EP15161152A EP2924286B1 EP 2924286 B1 EP2924286 B1 EP 2924286B1 EP 15161152 A EP15161152 A EP 15161152A EP 2924286 B1 EP2924286 B1 EP 2924286B1
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EP
European Patent Office
Prior art keywords
line
test
reservoir
return
temperature
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EP15161152.2A
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German (de)
English (en)
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EP2924286A2 (fr
EP2924286A3 (fr
Inventor
Karl-Heinz Pfaff
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Individual
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Individual
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Publication of EP2924286A3 publication Critical patent/EP2924286A3/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations

Definitions

  • the invention relates to a test device for pumps and a method for testing pumps.
  • pumps are used that have to work under changing temperatures.
  • the temperature range in such a circulating pump may fluctuate by 40 ° C or more.
  • pumps are tested during acceptance tests or tests according to a temperature cycle.
  • the pump in a test stand to which it is connected has to circulate, for example over a test period of several hundred hours, a liquid whose temperature changes at intervals, for example between 90 ° C and 50 ° C.
  • the conventional, internal prior art pump tester is in FIG. 2 and has the features located in the preamble of independent claim 1.
  • the object is achieved by a test device with the features of claim 1 and by a method having the features of claim 14.
  • a pump testing apparatus for alternately testing at upper and lower temperatures. It is therefore envisaged that during the test of each pump, the temperature changes at least once. Normally, a plurality of changes between the upper and the lower temperature are provided.
  • the testing device comprises a first reservoir for a liquid of a first temperature and a second reservoir for a liquid of a second temperature.
  • a first reservoir for a liquid of a first temperature and a second reservoir for a liquid of a second temperature.
  • water is provided as the liquid, but in principle other liquids are also suitable.
  • the first and second temperatures may correspond to the upper and lower temperatures, but this is not necessarily so.
  • the reservoirs are liquid containers which may possibly be insulated. They may be connected to heating or cooling devices, an expansion vessel and a safety valve may also be provided to compensate for volume and pressure variations within the reservoir. Typically, a vent is also provided.
  • a first distribution line starts from the first reservoir and a first manifold leads to the first reservoir. Ie. Liquid may pass through the first manifold from the first reservoir. Accordingly, the first manifold is provided for fluid to flow back into the first reservoir.
  • a second distribution line starts from the second reservoir and a second manifold leads to the second reservoir.
  • go out and “lead” refer to an intended direction of flow of liquid within said conduits. Apart from that, they express that the respective line is connected to said reservoir.
  • the test apparatus further comprises a plurality of test units. The number of these determines the maximum number of pumps that can be tested simultaneously.
  • each test unit comprises a first supply line, which starts from the first distribution line, a second supply line, which emanates from the second distribution line and a flow test line, to which the first and second flow line unite.
  • a plurality of first (second) supply lines originate from the first (second) distributor line, namely one per check unit.
  • the flow test line may be the continuation of the first flow line, so run in alignment with this; In this case, simply the part of the line which is behind the point of union with that of the second flow line is called the flow line.
  • each test unit comprises a first return line leading to the first manifold, a second return line leading to the second manifold, and a return test line branching into the first and second return lines, wherein a test to be tested between the flow test line and the return test line Pump is connectable.
  • the return check line is designed similar to one of the two return lines.
  • a plurality of first (second) return lines lead to the first (second) bus, namely one per test unit.
  • the flow test line and the return line form the part of the test unit intended to connect the pump. Ie. one input of the pump is connected to the flow test line and one output of the pump to the return line. During operation of the pump, this liquid sucks in via the flow test line and discharges it via the return line. If necessary, each of the two lines can be made very short, so that a connection provided for the pump is located in the immediate vicinity of the branching point of the return lines or the junction of the flow lines. It is understood that the pump may optionally be connected indirectly via additional adapters or the like to the respective test line.
  • manual valves may be provided in each of the test lines, by means of which they can be closed in the absence of pump or during their removal or installation. The valves may be used to adjust the pressure point as desired to achieve operation of the pump within the characteristic.
  • Each test unit furthermore comprises a first valve arrangement, by means of which the first supply line and the second supply line can be alternatively closed, and a second valve arrangement, by means of which the first return line and the second supply line can alternatively be closed.
  • a first valve arrangement by means of which the first supply line and the second supply line can be alternatively closed
  • a second valve arrangement by means of which the first return line and the second supply line can alternatively be closed.
  • the first distribution line, the first flow line, the flow line, the return line, the first return line and the first manifold form a circuit between the first reservoir and a pump to be tested.
  • the second distribution line, the second supply line, the flow test line, the return line, the second return line and the second manifold form a circuit between the second reservoir and a pump to be tested. Only the piece formed by the flow test line and the return line is common to the two circuits. This piece can, as already mentioned, be made short. In any case, this only affects a comparatively small part of the entire testing device.
  • the first valve arrangement By means of the first valve arrangement, it is possible to open the supply of liquid from each exactly one of the two distribution lines and to prevent the replenishment from the other distribution line.
  • the second valve arrangement one of the two manifolds, in which a discharge of liquid is possible.
  • the liquid can thus either circulate in one of the two circuits described or in the other.
  • the fluids circulating here only "divide" the piece formed by the two test leads. Ie. the part of the test device, the strongly different temperatures directly is exposed is small. It has a comparatively small heat capacity and can be rapidly cooled or heated by liquid inside it. Conversely, it withdraws the liquid only a relatively small amount of heat or gives only a small amount of heat to them, so that the temperature of the liquid changes little.
  • test device it is therefore possible with the test device according to the invention to carry out rapid temperature changes in the pump.
  • the intended temperatures in the area of the pump can be set more precisely.
  • provided temperature profiles can be realized much more accurately than in the prior art.
  • the heat transfer processes between liquid and lines are kept low. Large parts of the lines involved, in particular the distribution lines and the manifolds, as well as at least parts of the flow and return lines, always come only with liquid of approximately constant temperature in contact.
  • the first valve arrangement can be realized by means of a single multi-way valve, which is arranged at the point of union of the first and second supply lines. Such a valve can alternately establish a connection between the first flow line and flow test line or second flow line and flow test line.
  • the first valve arrangement comprises a first flow valve within the first flow line and a second flow valve within the second flow line.
  • this normally foreign-controlled valves such.
  • solenoid valves, pneumatically controlled ball valves, Schrägsitzventile, diaphragm valves used the remote-controlled closed and opened become.
  • These flow valves can be arranged near the point of union, to prevent that z. B. after closing the first flow valve between valve and merger point still liquid with (approximately) the first temperature, which mixes in a difficult to predict way with the liquid used in the subsequent interval (approximately) second temperature and changes the temperature thereof.
  • This can be designed as a multi-way valve, but advantageously comprises a first return valve within the first return line and a second return valve within the second return line.
  • the test device comprises a temperature sensor arranged on the return line and a control device connected thereto.
  • the connection can of course be given by cable or wirelessly. It is only important that the control device can receive measured values from the temperature sensor. This allows the temperature behind the pump to be checked. If a temperature change occurred in this area, this is an indication that it also occurred within the pump. In particular, this provides information about whether z. B. when switching from the first to the second temperature, the return line is already emptied of liquid of the first temperature. For this purpose, it is preferable to install the temperature sensor near the branch point to the first and second return pipes. Of course, an additional temperature sensor may be provided near the pump.
  • the test lines form the only area of the line system which inevitably flows through the liquid-changing temperature. If the first valve arrangement switched, z. B. so that the second flow line is released, is still in the test tubes liquid of the first temperature. If the second return line is released immediately, it is effectively "contaminated” with liquid of the first temperature.
  • the control device is preferably set up to first switch over the first valve arrangement for a temperature change and to switch the second valve arrangement only at a predetermined temperature change at the temperature sensor. A corresponding temperature change shows at o. G. Example, that the test lines are at least largely emptied of liquid first temperature, this was pressed into the first return line. Thus, the latter can be closed and the second return line can be opened.
  • the control device is set up to set by means of temperature control means in at least one reservoir a temperature which is outside the given by the upper and lower temperature interval. Under temperature control all devices for heating or cooling fall, so z.
  • temperature control are controlled so that z. B. the first temperature is still above the upper temperature and / or the second temperature below the lower Temperature (or vice versa). Ie.
  • the liquid in at least one reservoir is overheated or undercooled with respect to the desired temperature profile.
  • the control device automatically determines the values for the first and second temperature from the provided values for upper and lower temperature.
  • first and second reservoirs and their associated lines are “symmetrical" with respect to the first and second reservoirs and their associated lines.
  • Embodiments which differ with regard to the two reservoirs or line systems will be discussed below. These embodiments are considered particularly advantageous if the first temperature is the "warm” temperature and the second temperature is the “cool” temperature.
  • the liquid of the first temperature can be referred to herein as a warm liquid and the liquid of the second temperature as a cold liquid. This therefore refers to the fact that the first temperature is above the second temperature.
  • the reverse case is conceivable.
  • a circuit between the pump and the reservoir is not constantly maintained. That is, the existing liquid in the lines may be sufficient to maintain the desired temperature.
  • a short circuit outside the second reservoir can be produced between the second distributor line and the second bus line. This means it can be between the mentioned lines - from the test unit Seen from - already be made in front of the reservoir a connection.
  • connection can be realized by an additional, the second distribution line and the second manifold connecting line, which is opened when needed via valves.
  • a four-way valve is used, by means of which the short circuit can be produced.
  • the distribution line and the manifold can each be divided into two sections, which converge in each case at the four-way valve. In one position of the valve, a liquid path is opened in each case between the two sections of a line, in the other position (corresponding to the short circuit) there is a fluid path between the reservoir-proximal sections of the two lines and between the reservoir-remote sections ,
  • a short circuit can be effectively controlled by an already described control device to which a temperature sensor arranged on the return check line is connected. This is hereby set up to make the short circuit at a predetermined approximation of the temperature of the temperature sensor to the second temperature and cancel the short circuit for a given deviation. That is, if the temperature in the return check line (downstream of the pump) has approached a predetermined value of the second temperature (the temperature in the second reservoir), this is interpreted as an indication that no supply from the second reservoir is needed anymore. and the fluid communication to the second reservoir is interrupted by the short circuit. However, if the temperature deviates more sharply from the second temperature, a supply of "fresh" fluid from the reservoir is needed and the short circuit is removed.
  • a typical example of a test cycle is a series of longer time intervals in which the pump is heated to the upper temperature and shorter intervals at which the pump is cooled to the lower temperature.
  • the control device is preferably set up for a time sequence in which liquid from the first reservoir is used for longer time intervals and liquid from the second reservoir is used during shorter time intervals.
  • the liquid "from the second reservoir” may in this case also be liquid, which is circulated several times to the exclusion of the second reservoir due to an induced short circuit, but originally originates from it.
  • the first reservoir may in particular be the "warmer" reservoir, but the reverse case, which corresponds to another test cycle, is also conceivable.
  • the first manifold, the first manifold, the first flow line and the first return line at least partially a larger cross-section than the second manifold, the second manifold, the second flow line and the second return line.
  • the first supply line (or Return line) have a larger cross-section than the second flow line (or return line).
  • the cross section of the first flow line and the first return line will match, as well as the cross section of the second flow line and the second return line.
  • the mutually corresponding collection and distribution lines usually have the same cross section. However, it is possible that the cross-section of a manifold (which feeds a plurality of flow lines) is greater than that of the associated flow line.
  • valve arrangements can be switched independently of one another in different test units.
  • an associated circuit allows, for. B. to open the first flow line in a test unit, while the first flow line is closed in another test unit or is.
  • a control device should be designed to individually control the valves in the individual test units.
  • the invention further relates to a method for testing pumps. This is done in a device already described above. This comprises a first reservoir, a second reservoir, a first distribution line emanating from the first reservoir, a first manifold leading to the first reservoir, a second manifold leading from the second reservoir, a second manifold leading to the second reservoir, and a plurality of test units.
  • Each test unit comprises a first supply line, which starts from the first distribution line, a second supply line, which starts from the second distribution line, a flow test line, to which the first and second flow line unite, a first return line leading to the first manifold, a second return line, the leading to the second manifold, a scrublaufprüftechnisch, which branches into the first and second return line, a first valve arrangement, by which the first flow line and the second flow line are alternatively closable, and a second valve arrangement, through which the first return line and the second flow line alternatively are closable.
  • a liquid of a first temperature is stored in the first reservoir and a liquid of a second temperature is stored in the second reservoir.
  • a pump to be tested is connected between the flow test line and the return line of at least one test unit.
  • the pump is operated and by switching the first and second valve arrangement, liquid is led from the first and second reservoir to the pump in temporal change.
  • the first valve arrangement is switched and only at a predetermined temperature change in the return line, the second valve arrangement is reversed.
  • a temperature is set by means of tempering in at least one reservoir, which is outside the given by the upper and lower temperature interval.
  • a short circuit outside the second reservoir may preferably be established at least temporarily between the second distribution line and the second collection line. This can be produced in particular by means of a four-way valve.
  • the short circuit is preferably established at a predetermined approach of the temperature in the return test line to the second temperature, and the short circuit is canceled at a predetermined deviation from the second temperature.
  • liquid from the first reservoir in chronological sequence during relatively long time intervals, and liquid from the second reservoir for shorter time intervals.
  • valve arrangements in different test units are preferably switched independently of each other.
  • FIG. 1 shows a test apparatus 1, with the quality of pumps 50, for example circulation pumps for heating systems, is tested. It is envisaged that a plurality of pumps 50 may optionally be tested at the same time.
  • the intended test cycle includes 45-minute intervals during which the pump 50 is to operate at an upper temperature of 90 ° C and intermediate intervals of 15 minutes during which a temperature of 50 ° C is provided.
  • two reservoirs 2, 3 are provided, namely a hot water reservoir 2 and a cold water reservoir 3.
  • the hot water reservoir 2 is filled with water, which is maintained at a temperature of about 95 ° C. , This overheating compared to the test temperature of 90 ° C, undesirable cooling effects on the way to the pump 50 are compensated.
  • the hot water reservoir 2 is heated via a arranged in its wall screw 8.
  • An expansion vessel 9 is connected to the hot water reservoir 2 to compensate for volume and pressure changes.
  • a safety valve 10 is also coupled.
  • the hot water reservoir 2 further comprises a vent 6 and a manual valve 7, via which the reservoir 2 can be filled or emptied.
  • a thermometer 4 and a pressure gauge 5 are provided for monitoring the most important operating parameters pressure and temperature.
  • the cold water reservoir 3 is intended for water at a temperature of about 35 ° C. This temperature is again below the test temperature of 50 ° C to compensate for heating effects.
  • the term "cold water” is here of course relative and means that this is the colder water compared to the hot water reservoir 2.
  • substantially the same elements are connected as to the hot water reservoir 2, except the Einschraub carvingSystem 8. Such could optionally be provided to prevent a significant drop below the intended temperature. If the temperature increases significantly above 35 ° C., the water can be conducted past a heat exchanger 12 by means of a circulating pump 11, whereby cooling takes place.
  • the access to the heat exchanger 12 can be opened and closed if required via two manual valves 13, 14 but also via automatic valves.
  • Temperature and pressure in the reservoirs 2, 3 are monitored by a central control device (not shown), which controls the circulation pump 11 or the screw-in heater 8 when needed.
  • a first distribution line 20 goes out.
  • a first manifold 21 leads back to the hot water reservoir 2.
  • These lines form, so to speak, the backbone of a water cycle between the hot water reservoir 2 and the pump 50.
  • a second distribution line 22 and a second manifold 23 are connected to the cold water reservoir 3.
  • the second manifold 22 and the second manifold 23 are passed through a four-way valve 24, whereby the second manifold 22 is divided into a first and second section 22.1, 22.2. Accordingly, the second manifold 23 divided into a first and second section 23.1, 23.2.
  • the function of the four-way valve 24 will be explained below.
  • the test apparatus 1 comprises five test units 30. These are of similar design, therefore, only the construction of a test unit 30 will be discussed below. Of course, the system can be extended to a much larger number of test units 30.
  • a first flow line 31 of the test unit 30 goes out, correspondingly, a second flow line 32 starts from the second distribution line 22.
  • These flow lines 31, 32 are provided for the supply of hot or cold water in the test unit 30. They are closed by a first flow valve 37 and a second flow valve 38.
  • the first flow line 31 and the second flow line 38 unite to a flow test line 33, which is provided for connection of the pump 50 to be tested.
  • the flow test line 33 can be closed by means of a manual valve 42.
  • the pump 50 is further connected to a return check line 36, which can be closed in a corresponding manner by means of a manual valve 43.
  • the return check line 36 branches into a first return line 34, which leads to the first manifold 21, and a second return line 35, which leads to the second manifold 23.
  • the first return line 34 has a first return valve 39.
  • the second return line 35 can be closed by means of a second return valve 40.
  • the first and second flow valves 37, 38 and the first and second return valves 39, 40 are connected to the central control device and are controlled by the latter. Of course they are the valves 37, 38, 39, 40 in different test units 30 independently controllable.
  • the flow test line 33 is essentially an extension of the first flow line 31, d. H. it has the same cross section and is aligned at the transition point with the first flow line 31.
  • the second flow line 32 opens at an angle and also has a smaller cross section.
  • the first return line 34 essentially forms an extension of the return check line 36, while the branching second return line 35 has a smaller cross section.
  • the purpose of the smaller cross section is to reduce the heat capacity and thermal conductivity of the corresponding pipe parts. They thus remove less heat from the lines belonging to the hot water circuit, which is relevant insofar as the test cycle is predominantly operated with hot water.
  • test apparatus 1 The operation of the test apparatus 1 will be explained below.
  • an interval with the upper temperature of 90 ° C is provided.
  • the first flow valve 37 and the first return valve 39 are opened, while the second flow valve 38 and the second return valve 40 are closed.
  • the manual valves 42, 43 are open.
  • the pump 50 to be tested which is typically electrical is operated, is turned on and sucks on the flow line 33, the first flow line 31 and the first manifold 20 water from the hot water reservoir 2 at.
  • the control device controls via a arranged in the return line 36 temperature sensor 41, the temperature lying there before.
  • the control device closes the first flow valve 37 and opens the second flow valve 38.
  • the switching state of the return valves 39, 40 initially remains unchanged.
  • the pump sucks now via the flow test line 33, the second flow line 32 and the second manifold 22 cold water.
  • the control device continues to control the temperature in the return check line 36 via the temperature sensor 41.
  • the controller further registers, via the temperature sensor 41, the temperature in the return check line 36. If it is determined that the registered temperature is within a predetermined interval, For example, 5 ° C to the intended lower temperature of 50 ° C, controls the control device, the four-way valve 24 such that the second portion 22.2 of the second manifold 22 is connected to the second portion 23.2 of the second manifold 23 , Said sections 22.2, 23.2 are so to speak shorted.
  • the immediate cold water supply from the cold water reservoir 3 is thus temporarily interrupted.
  • control device registers via the temperature sensor 41 that the temperature deviates too much from the intended lower temperature, it controls the four-way valve 24 in such a way that the first and second sections 22.1, 22.2 of the second distribution line 22 are connected together the first and second sections 23.1, 23.2 of the second manifold 23rd
  • the control device shoots for this purpose, the second flow valve 38 and opens the first flow valve 37.
  • the temperature in the return line 36 is again monitored by the temperature sensor 41 and only when a certain temperature (eg. 80 ° C) is exceeded, the second return valve 40 is closed and the first return valve 39 is opened.
  • test apparatus 1 is designed to test a plurality of pumps 50 at the same time according to a synchronous test cycle or else to subject a plurality of pumps 50 to time-delayed test cycles.
  • switching state of the four-way valve 24 it is provided here that a short circuit is produced only when the temperature sensors 41 register a temperature in all operating units 30 which is within the described interval around the intended lower temperature.
  • the hot water reservoir 2 is connected via first distribution valve 108 to a distribution line 102 and via a first collection valve 109 to a manifold 103.
  • the cold water reservoir 3 is connected via a second distribution valve 110 to the same distribution line 102 and via a second collection valve 111 to the same manifold 103.
  • a plurality of supply lines 104 go out, each can be shut off via manual valves 106.
  • An equal number of return lines 105 which can also be shut off via manual valves 107, leads to the collecting line 103.
  • a pump 50 to be tested is connected between a respective supply line 104 and a return line 105.
  • the first distribution valve 108 and the first collection valve 109 are opened and the second distribution valve 110 and the second collection valve 111 are closed. All connected pumps 50 suck now via their respective flow line 104 and the manifold 102 hot water and eject it via the return lines 105 and the manifold 103 again.
  • the first distribution valve 108 and the second collection valve 109 are closed and the second distribution valve 110 and the second collection valve 111 are opened.
  • the respective pumps 50 suck now on the respective flow line 104 and the manifold 102 cold water and eject it via the return lines 105 and the manifold 103 again.
  • hot water present in lines 102, 103, 104, 105 initially causes considerable thermal contamination of the cold water and, on the other hand, all lines 102, 103, 104, 105 must be cooled down from the upper temperature to the lower temperature , When changing from cold water to hot water, the pipes must be reheated accordingly.
  • test device 1 efficient, flexible and can pass through an intended temperature profile quickly and with high precision.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Pipeline Systems (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Claims (14)

  1. Dispositif de contrôle (1) pour pompes (50) destiné à faire un contrôle alternatif en présence d'une température supérieure et d'une température supérieure, avec
    - un premier réservoir (2) pour le liquide à une première température,
    - un second réservoir (3) pour le liquide à une seconde température,
    - une première conduite de distribution (20) qui part du premier réservoir (2),
    - une première conduite de collecte (21) qui conduit au premier réservoir (2),
    - une seconde conduite de distribution (22) qui part du second réservoir (3),
    - une seconde conduite de collecte (23) qui conduit au second réservoir (3), ainsi
    - que plusieurs unités de contrôle (30), chaque unité de contrôle (30) comprenant :
    ∘ une première conduite de départ (31), qui part de la première conduite de distribution (20),
    ∘ une seconde conduite de départ (32), qui part de la seconde conduite de distribution (22),
    ∘ une conduite de contrôle de départ (33) sur laquelle se réunissent la première (31) et la seconde conduite de départ (32),
    ∘ une première conduite de retour (34), qui conduit à la première conduite de collecte (21),
    ∘ une seconde conduite de contrôle de retour (35), qui conduit à la seconde conduite de collecte (23),
    ∘ une conduite de contrôle de retour (36), qui se sépare et la première (34) et la seconde (35) conduite de retour, sachant qu'une pompe (50) devant être contrôlée peut être raccordée entre la conduite de contrôle de retour (33) et la conduite de contrôle de retour (36),
    ∘ une première disposition de vannes (37, 38), grâce à laquelle la première conduite de départ (31) et la seconde conduite de départ (32) pouvant être alternativement fermées, et
    ∘ une seconde disposition de vannes (39, 40), grâce à laquelle la première conduite de départ (34) et la seconde conduite de départ (35) pouvant être alternativement fermées.
  2. Dispositif de contrôle selon la revendication 1, caractérisé par le fait que la première disposition de vannes (37, 38) comprend une première vanne de départ (37) à l'intérieur de la première conduite de départ (31) ainsi qu'une seconde vanne de départ (38) à l'intérieur de la seconde conduite de départ (32).
  3. Dispositif de contrôle selon la revendication 1, caractérisé par le fait que la seconde disposition de vannes (39, 40) comprend une première vanne de retour (39) à l'intérieur de la première conduite de retour (34) ainsi qu'une seconde vanne de retour (40) à l'intérieur de la seconde conduite de retour (35).
  4. Dispositif de contrôle selon une des revendications précédentes, caractérisé par une sonde de température (41) disposée sur la conduite de contrôle de retour (36) et reliée à un dispositif de commande.
  5. Dispositif de contrôle selon la revendication 4, caractérisé par le fait que le dispositif de commande est, pour un changement de température, destiné
    - à d'abord commuter une première disposition de vannes (37, 38) et
    - à ne commuter la seconde disposition de vannes (39, 40) qu'en cas de modification prescrite sur la sonde de température (41).
  6. Dispositif de contrôle selon une des revendications précédentes, caractérisé par le fait que le dispositif de commande est destiné à instaurer une température qui se trouve en dehors de la plage délimitée par la température supérieure et la température inférieure dans au moins un réservoir (2, 3) et à l'aide de moyens de tempérage (8, 11, 12).
  7. Dispositif de contrôle selon une des revendications précédentes, caractérisé par le fait que la première température se situe au-dessus de la seconde température.
  8. Dispositif de contrôle selon une des revendications précédentes, caractérisé par le fait qu'un court-circuit peut être établi en dehors du second réservoir (3) entre la seconde conduite de distribution (22) et la seconde conduite de collecte (23) et/ou qu'un court-circuit peut être établi en dehors du premier réservoir (2) entre la première conduite de distribution (20) et la première conduite de collecte (21).
  9. Dispositif de contrôle selon la revendication 8, caractérisé par un distributeur à quatre voies (24) permettant d'établir un court-circuit.
  10. Dispositif de contrôle selon la revendication 8 ou 9, caractérisé par une sonde de température (41) disposée sur la conduite de contrôle de retour (36) et un dispositif de commande relié à cette sonde, lequel est destiné à établir le court-circuit si la température de la sonde de température (41) s'approche dans une mesure prescrite de la seconde température, et à mettre fin à ce court-circuit si elle s'en éloigne dans une mesure prescrite.
  11. Dispositif de contrôle selon une des revendications précédentes, caractérisé par le fait que le dispositif de commande est programmé pour une séquence temporelle dans le cadre de laquelle du liquide du premier réservoir (2) est utilisé pendant les intervalles de temps relativement longs, et du liquide du second réservoir (3) pendant les intervalles de temps relativement courts.
  12. Dispositif de contrôle selon une des revendications précédentes caractérisé par le fait que la première conduite de distribution (20), la première conduite de collecte (21), la première conduite de départ (31) et la première conduite de retour (34) présentent au moins en partie une section plus grande que celle de la seconde conduite de distribution (22), la seconde conduite de collecte (23), la seconde conduite de départ (32) et la seconde conduite de retour (35).
  13. Dispositif de contrôle selon une des revendications précédentes caractérisé par le fait que les dispositions de vannes (37, 38, 39, 40) peuvent être commutées indépendamment les unes des autres dans différentes unités de contrôle (30).
  14. Procédé destiné à contrôler des pompes dans un dispositif avec
    - un premier réservoir (2),
    - un second réservoir (3),
    - une première conduite de distribution (20) qui part du premier réservoir (2),
    - une première conduite de collecte (21) qui conduit au premier réservoir (2),
    - une seconde conduite de distribution (22) qui part du second réservoir (3),
    - une seconde conduite de collecte (23) qui conduit au second réservoir (3), ainsi
    - que plusieurs unités de contrôle (30), chaque unité de contrôle (30) comprenant :
    ∘ une première conduite de départ (31), qui part de la première conduite de distribution (20),
    ∘ une seconde conduite de départ (32), qui part de la seconde conduite de distribution (22),
    ∘ une conduite de contrôle de départ (33) sur laquelle se réunissent la première (31) et la seconde conduite de départ (32),
    ∘ une première conduite de retour (34), qui conduit à la première conduite de collecte (21),
    ∘ une seconde conduite de contrôle de retour (35), qui conduit à la seconde conduite de collecte (23),
    ∘ une conduite de contrôle de retour (36), qui se sépare et la première (34) et la seconde (35) conduite de retour, sachant qu'une pompe (50) devant être contrôlée peut être raccordée entre la conduite de contrôle de retour (33) et la conduite de contrôle de retour (36),
    ∘ une première disposition de vannes (37, 38), grâce à laquelle la première conduite de départ (31) et la seconde conduite de départ (32) pouvant être alternativement fermées, et
    ∘ une seconde disposition de vannes (39, 40), grâce à laquelle la première conduite de départ (34) et la seconde conduite de départ (35) pouvant être alternativement fermées.
    sachant que
    - un liquide à une première température est conservé dans le premier réservoir (2),
    - un liquide à une seconde température est conservé dans le second réservoir (3),
    - une pompe à contrôler (50) est raccordée entre la conduite de contrôle de départ (33) et la conduite de contrôle de retour (36) d'au moins une unité de contrôle (30),
    - la pompe (50) étant en fonctionnement et
    - du liquide étant transféré en alternance du premier (2) et du deuxième (3) réservoir vers la pompe par commutation de la première (37, 38) et de la deuxième (39, 40) disposition de vannes de l'unité de contrôle (30).
EP15161152.2A 2014-03-28 2015-03-26 Dispositif de vérification de pompes Not-in-force EP2924286B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014104422.3A DE102014104422A1 (de) 2014-03-28 2014-03-28 Prüfvorrichtung für Pumpen

Publications (3)

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EP2924286A2 EP2924286A2 (fr) 2015-09-30
EP2924286A3 EP2924286A3 (fr) 2016-02-17
EP2924286B1 true EP2924286B1 (fr) 2017-04-05

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DE (1) DE102014104422A1 (fr)
DK (1) DK2924286T3 (fr)
ES (1) ES2638300T3 (fr)

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CN107816431B (zh) * 2017-11-23 2024-06-04 山东省农业机械科学研究院 核二级高压安全注射泵环境仿真试验***
CN112283068B (zh) * 2020-10-12 2022-06-07 国网江苏省电力有限公司镇江供电分公司 一种压缩空气储能供能装置
CN114151361A (zh) * 2021-11-30 2022-03-08 浙江方威检验检测技术有限公司 一种面向水泵制造自动化工厂的出厂检测***
CN114320872B (zh) * 2021-12-31 2024-04-12 浙江工业大学台州研究院 一种车用电子水泵的测试***

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Publication number Priority date Publication date Assignee Title
DE2803770C2 (de) * 1978-01-28 1980-02-21 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Vorrichtung zur Regelung der Temperatur einer im Kreislauf geführten Flüssigkeit auf einem Prüfstand
US6092370A (en) * 1997-09-16 2000-07-25 Flow International Corporation Apparatus and method for diagnosing the status of specific components in high-pressure fluid pumps
DE102006013634A1 (de) * 2006-03-22 2007-09-27 PID Prüfungen & industrielle Dienstleistungen GmbH & Co. KG Prüfstandanordnung zur Durchführung von Tests an flüssigkeitsdurchströmten Prüfmodulen
DE102007041137A1 (de) * 2007-08-30 2009-03-05 Netzsch Oilfield Products Gmbh Pumpenprüfstand
US9222575B2 (en) * 2010-12-22 2015-12-29 Gm Global Technology Operations, Llc Electric pump

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EP2924286A2 (fr) 2015-09-30
DE102014104422A1 (de) 2015-12-03
EP2924286A3 (fr) 2016-02-17
DK2924286T3 (en) 2017-07-24
ES2638300T3 (es) 2017-10-19

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