Collector for drain liquid of aeronautical turbine engine and associated turbine engine

Abstract

The invention relates to a collector (10) for an effluent liquid of a turbine engine, said collector comprising:-an inner cavity (54) comprising a first space (54A) for collecting said liquid and a second space (54B) for transferring said liquid, the inner cavity extends longitudinally along a first direction (Z) between a first end closed by a bottom wall (16) of the collector and a second end closed by a cover (14); and-at least one inlet (44) for said drain liquid; the first space and the second space are separated by a partition (56) in which a member (58) for limiting the flow of the excretion liquid from the first space to the second space is arranged, wherein a member (58) for restricting the flow of the drain liquid is mounted such that it can be removed from the collector by being moved in a direction from the bottom wall of the collector towards the cover.

Description

Technical Field

[0001] The present disclosure relates to the field of collectors for drain liquids of aviation turbine engines. Background Art

[0002] In turbine engines, it is often necessary to drain different types of liquids, such as fuel or oil, to prevent these liquids from accumulating and interfering with the nominal operation of the turbine engine. For example, some engines require draining operations that result in the loss of these liquids.

[0003] In order to recover these liquids, it is known to provide the turbine engine with a collector for draining the liquids. This collector comprises an internal cavity for receiving the liquids drained from different parts of the turbine engine. The collector further comprises an inlet for draining the liquids, connecting the outside of the collector to its internal cavity, and a recovery outlet for this liquid. The recovery outlet connects the internal cavity of the collector to other parts of the turbine engine, for example to a fuel tank.

[0004] The collector is often configured to direct the collected liquid to a recovery outlet, which allows the drained liquid to be reused, as long as the amount of drained liquid reaching the interior cavity of the collector is not extremely high.

[0005] Conventionally, the recovery outlet is provided with a flow restriction member for restricting the circulation of the drainage liquid, which is arranged at the interface between the interior of the collector and the exterior of the collector. The flow restriction member forms a nozzle, which measures the flow rate of the drainage liquid leaving the collector through the recovery outlet. The nozzle allows the flow rate of the drainage liquid leaving the collector to be controlled. In particular, the nozzle counteracts the flow resistance of the drainage liquid which depends on the pressure difference across the nozzle. Since the nozzle is arranged at the interface between the interior and the exterior of the collector, the pressure difference across the nozzle is equivalent to the pressure difference between the interior and the exterior of the collector.

[0006] When the pressure differential across the nozzle increases sufficiently, the flow resistance of the nozzle is compensated and the drainage liquid is able to flow through the nozzle.

[0007] The pressure differential across the nozzle becomes dependent only on the amount of liquid collected in the internal cavity of the collector, so the flow rate of liquid exiting through the nozzle is proportional to the amount of liquid in the collector. Therefore, if the flow rate of liquid exiting the nozzle is extremely high, this means that there is an extremely large amount of liquid in the collector, which can help identify faults in the turbine engine.

[0008] However, it has been found that operating conditions of the collector, such as the air pressure increase in the internal cavity of the collector or the flow rate of the drained liquid entering the internal cavity, and installation conditions of the collector, such as the length of the pipe at the outlet of the collector, also have an influence on the pressure difference across the nozzle. Such parameters thus modify the relationship between the amount of liquid drained into the internal cavity and the flow rate of the drained liquid exiting through the recovery outlet, which can lead to erroneous detection of a fault of the turbine engine or not identifying an actual fault of the turbine engine.

[0009] Furthermore, the nozzles tend to clog while they are in operation, which can impair their operation or even render them inoperable. Summary of the invention

[0010] The present disclosure improves the described situation.

[0011] For this purpose, a collector for drained liquid of an aviation turbine engine of a first type is proposed, said collector comprising:

[0012] - an internal cavity comprising a first space for collecting the drained liquid and a second space for transferring the collected liquid to a recovery outlet;

[0013] - at least one inlet for said drainage liquid, said at least one inlet being in fluid communication with said first space; and

[0014] - at least one recovery outlet, the at least one recovery outlet being in fluid communication with the second space;

[0015] The first space and the second space are separated from each other by a liquid-tight partition, a drainage liquid circulation limiting member is arranged in the liquid-tight partition, the drainage liquid circulation limiting member limits the circulation of the drainage liquid from the first space to the second space, and the air in the first space is connected to the air in the second space, so that the air pressure in the first space and the air in the second space are the same.

[0016] Since the air pressure in the first space and in the second space is the same, the pressure difference across the drainage liquid circulation restriction member depends only on the height of the drainage liquid collected in the first space. "Across the circulation restriction member" is understood to mean the inlet into the restriction member and the outlet from the restriction member. More precisely, the inlet into the restriction member corresponds to the outlet from the first space, and the outlet from the restriction member corresponds to the inlet into the second space.

[0017] Due to the equalization of pressure in the first and second spaces, other variables, such as an increase in air pressure, a flow rate of drainage liquid into the internal cavity, or an increase in the length of the conduit at the outlet from the collector, do not affect the pressure difference across the drainage liquid flow restriction member.

[0018] The present document also relates to a collector for drained liquid of an aviation turbine engine of a second type, said collector comprising:

[0019] - an internal cavity comprising a first space for collecting drained liquid and a second space for transferring the collected liquid to a recovery outlet, the internal cavity extending longitudinally in a first direction between a first end closed by a bottom wall of the collector and a second end closed by a cover of the collector;

[0020] - at least one inlet for said drainage liquid, said at least one inlet being in fluid communication with said first space; and

[0021] - at least one recovery outlet, the at least one recovery outlet being in fluid communication with the second space;

[0022] wherein the first space and the second space are separated from each other by a liquid-tight partition, a drainage liquid circulation restriction member is arranged in the liquid-tight partition, and the drainage liquid circulation restriction member restricts the circulation of the drainage liquid from the first space to the second space,

[0023] Wherein the drainage liquid circulation restriction member is mounted so as to be removable from the collector by moving the drainage liquid circulation restriction member along a first direction in the sense of a direction extending from a bottom wall of the collector toward a cover of the collector.

[0024] Since the drainage liquid passage restricting member is mounted so as to be removable relative to the collector, the drainage liquid passage restricting member can be taken out from the collector to facilitate cleaning and to regularly check whether the drainage liquid passage restricting member is clogged.

[0025] Furthermore, since the limiting member is removed from the collector by moving the limiting member in the first direction in the sense of the direction from the bottom wall of the collector toward the cover of the collector, the limiting member is taken out through the second end of the internal cavity, which prevents the drainage liquid from leaking through the bottom wall of the collector. This configuration also avoids the use of a seal, for example made of an elastomer, to ensure the liquid tightness of the bottom wall of the collector. The resistance of the collector to fire in the bottom layer of the engine is thus improved.

[0026] According to one aspect of the invention, the partition is a partition removably mounted in the inner cavity of the collector. Alternatively, the partition is a partition fixedly mounted in the inner cavity of the collector or even formed as one integral piece with the wall of the inner cavity.

[0027] According to one aspect, the at least one recovery outlet is an outlet of a fuel tank connected to the turbine engine. Alternatively, the at least one recovery outlet is an outlet of a recovery tank also known as an "eco" tank. This eco tank is configured to store the drain liquid when it is not returned to the fuel tank. It should be noted that due to the same air pressure in the first space and the second space, the fluid height difference between the collector and the fuel tank or eco tank has no effect on the pressure difference across the drain liquid circulation restriction member.

[0028] According to one aspect, the drainage liquid flow restriction member is formed in the partition. For example, the flow restriction member includes at least one orifice passing through the partition. The partition orifice allows the drainage liquid to flow from the first space to the second space.

[0029] According to one example, at least one orifice included in the drainage liquid circulation restriction member may be arranged in an attachment nozzle mounted in an opening in the partition.

[0030] According to one aspect, the separator is thin-walled. "Thin-walled" is understood to mean that the thickness of the separator is less than 1.5 mm, preferably less than 1 mm.

[0031] According to one aspect, the diameter of the orifice is less than 1.5 mm, preferably less than 1 mm.

[0032] According to one aspect, the drainage liquid circulation restriction member comprises at least two orifices passing through the partition. In this case, in order to keep the laws governing the flow of drainage liquid between the first space and the second space of the cavity the same as when the circulation restriction member comprises only one orifice, the orifice of the partition preferably has a diameter that is smaller than the diameter of the partition orifice when there is only one orifice.

[0033] According to one aspect, the drainage liquid circulation restriction member comprises at least two orifices that penetrate the partition at different heights. In this case, the filling level of the drainage liquid through each orifice of the partition into the internal cavity is different, the orifices at the lower height being penetrated at a lower filling level than those orifices at the higher height.

[0034] According to one aspect, the collector further comprises a discharge outlet, which is fluidly connected to an overflow channel, for example arranged in the first space of the inner cavity.

[0035] The discharge outlet communicates with the outside of the turbine engine.The overflow channel has a defined height making it possible to determine a filling level in the internal cavity of the collector above which the drained liquid flows through the discharge outlet.

[0036] According to one aspect, the overflow channel comprises an inlet port for the entry of liquid collected in the first space, said inlet port being arranged at a height greater than the height of the drainage liquid circulation restriction member.

[0037] Here, the height is understood to mean a dimension measured in the longitudinal direction of the collector in the working position of the collector. Depending on the diameter of the orifice of the restriction member and the height of the inlet port of the overflow channel, a detection threshold for leakage of drainage liquid from the turbine engine can be determined, if the detection threshold is exceeded the drainage liquid flows through the discharge outlet. When this threshold is exceeded, the amount of drainage liquid reaching the inner cavity is extremely large, which can indicate the presence of a fault in the turbine engine.

[0038] According to one aspect, the partition forms a tube which delimits the second space.

[0039] According to the invention, the tube is arranged in the inner cavity, extending between the bottom wall of the collector and the cover of the collector. More specifically, the tube extends from the bottom wall of the collector towards the cover of the collector. The tube has a cylindrical shape, for example with a circular cross section.

[0040] Advantageously, the drainage liquid recovery outlet is fluidly connected to the inner cavity of the collector through the bottom wall of the collector.

[0041] According to one aspect, the tube extends in a longitudinal direction and comprises a first end carrying a drainage liquid circulation restriction member and a second end carrying at least one pressure equalization orifice connecting the air of the first space with the air of the second space.

[0042] According to the invention, the first end is directly connected to the bottom wall of the collector.The drainage liquid circulation restriction member is therefore arranged close to the bottom wall of the collector so that drainage liquid flows between the first space and the second space at a low filling level of drainage liquid in the first space.

[0043] The at least one pressure-balancing orifice allows the air of the first space to be communicated with the air of the second space, which allows the pressure between the first space and the second space to be equalized. More precisely, the at least one pressure-balancing orifice is sized to ensure that the pressure in the second space is the same as the pressure in the first space. According to the invention, the diameter of the at least one pressure-balancing orifice is greater than 1.5 mm and less than 3 mm. By way of example, the diameter of the at least one pressure-balancing orifice is 2 mm.

[0044] According to one aspect, the second end of the tube comprises at least two pressure equalization orifices.

[0045] When several pressure equalization orifices are provided, this facilitates equalization of pressure between the first space and the second space of the inner cavity of the collector.

[0046] Advantageously, the tube comprises six pressure equalization orifices distributed equidistantly around the longitudinal direction of the tube.

[0047] According to one aspect, the at least one pressure balancing orifice has a diameter greater than the diameter of the drainage liquid circulation restriction member. This makes it possible to balance the pressure between the first space and the second space.

[0048] According to one aspect, the at least one pressure-balancing orifice is arranged at a height greater than the height of the inlet port for draining liquid into the overflow channel. This therefore ensures that the draining liquid does not pass through the at least one pressure-balancing orifice, because once the height of the inlet port for draining liquid into the overflow channel is reached, the draining liquid flows through this overflow channel towards the discharge outlet of the collector.

[0049] According to one aspect, the partition forms a tube which is mounted so as to be removable from the collector by moving the tube along a first direction in the sense of a direction extending from a bottom wall of the collector towards a cover of the collector.

[0050] Since the tube is removably mounted, removal of the drainage liquid passage restricting member is facilitated.

[0051] Furthermore, since the tube is removably mounted, this facilitates its manufacture, even when its walls are thin. "Thin-walled" is here understood to mean a wall having a thickness less than or equal to 2 mm, preferably less than 1 mm.

[0052] According to one aspect, the tube comprises a first end directly connected to the bottom wall of the collector and a second end connected to the cover of the collector.

[0053] The tube is thus held in place within the interior cavity of the collector.

[0054] According to another aspect, a drainage liquid flow restriction member is included in the first end of the tube at a height above the level of the inner face (20) of the bottom wall (16) of the collector. In particular, the flow restriction member is located at a height between the bottom wall of the collector and the cover of the collector.

[0055] Since the flow restriction member is included in the first end portion of the tube, the drainage liquid flows between the first space and the second space at a low filling level of the drainage liquid in the first space.

[0056] Since the flow restriction member is arranged at a height between the bottom wall of the collector and the cover of the collector, the flow restriction member is prevented from being arranged in areas where impurities accumulate in the collector. Areas where impurities accumulate are in particular those areas included in any housing or cavity provided in the bottom wall of the collector. This reduces the risk of blockage in the flow restriction member.

[0057] According to one aspect, the first end of the tube comprises an insertion portion which is inserted into a housing in the bottom wall of the collector.The first end of the tube is thus held in place in the bottom wall.

[0058] According to one aspect, the first end portion comprises a stop member, such as a flange, on the bottom wall protruding radially outwardly from the tube relative to the insertion portion, the stop member being arranged between the drainage liquid circulation restriction member and the insertion portion.

[0059] The insertion part of the tube is thus inserted into the housing of the bottom wall of the collector until the stop part of the first end of the tube abuts against the bottom wall of the collector. The arrangement of the tube in the internal cavity is thus guided and facilitated. In addition, since the stop part is arranged between the drainage liquid circulation restriction member and the insertion part, this ensures that the restriction member is arranged at a height between the bottom wall and the cover of the collector so as not to be arranged in an area where impurities accumulate.

[0060] According to one aspect, the insertion portion of the first end of the tube comprises an annular groove in which an annular gasket is mounted, said annular gasket resting against an annular surface facing the housing.

[0061] Due to the annular groove and the annular gasket, the liquid-tightness of the connection between the bottom wall of the collector and the tube is improved.

[0062] According to one aspect, the second end of the tube comprises at least one pressure balancing orifice that passes through the tube between the first space and the second space of the interior cavity.

[0063] The at least one pressure-balancing orifice communicates the air of the first space with the air of the second space so that the air pressures in the first space and the second space are the same.

[0064] According to one aspect, the second end comprises a connecting pin for connecting the tube to a cover of the collector.

[0065] According to one aspect, the cover of the collector comprises a tube cap having a shape complementary to that of the connecting pins of the tube.

[0066] According to the invention, the length of the flow rate limiting member is such that it extends from the bottom wall to the cover of the collector. Since the tube cap has a shape complementary to that of the connecting pin of the tube, this ensures that the second end is locked in the internal cavity of the collector. In particular, the tube cap is sized so as to compensate for the play of the second end, and more precisely so as to reduce vibrations of the second end of the tube that may be caused by the drainage liquid collected in the first space of the internal cavity.

[0067] According to one aspect, the cover of the collector is removable, thereby facilitating the removal of the flow-restricting member.

[0068] According to one aspect, the collector further comprises a discharge outlet fluidly connected to an overflow conduit arranged in a first space of the internal cavity, wherein the overflow conduit forms an assembly with the tube which can be removed by moving the assembly along a first direction in the sense of a direction from the bottom wall of the collector towards a cover of the collector.

[0069] According to another aspect, the diameter of the flow restriction member is less than or equal to 1.5 mm, preferably less than 1 mm. The flow rate of drainage liquid that can travel from the first space to the second space in order to go to the first outlet is thus limited.

[0070] According to another aspect, the thickness of the flow restriction member is less than or equal to 2 mm, preferably less than 1 mm. The nozzle is thus a thin-walled nozzle.

[0071] According to another aspect, there is provided a turbine engine, such as a turbojet engine or a turboprop engine, comprising at least one collector of the first or second type as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Other features, details and advantages will become apparent from a reading of the following detailed description and an analysis of the accompanying drawings, in which:

[0073] Figure 1

[0074] Figure 1 A collector for drain liquid of an aircraft turbine engine is shown according to a first embodiment.

[0075] Figure 2

[0076] Figure 2 A collector for drain liquid of an aircraft turbine engine is shown according to a second embodiment.

[0077] Figure 3

[0078] Figure 3 Show Figure 2 The collector includes a tube.

[0079] Figure 4

[0080] Figure 4 Show Figure 3 The first end of the tube.

[0081] Figure 5

[0082] Figure 5 Show Figure 3 The second end of the tube.

[0083] Figure 6

[0084] Figure 6 Show Figure 2 Exploded view of the collector. DETAILED DESCRIPTION

[0085] Figure 1 and 2 A collector 10 for drain liquid of an aircraft turbine engine is shown. The collector 10 comprises a body 12 and a cover 14.

[0086] The body 12 has a cylindrical shape with a substantially vertical axis A1. In the following, "vertical" means along a direction Z substantially parallel to the axis A1. In the figures, the body 12 has a substantially circular cross section, but it may also have a polygonal cross section.

[0087] The body 12 includes a bottom wall 16 and a side wall 18 .

[0088] The bottom wall 16 preferably has a cross section whose shape and dimensions are equivalent to those of the cross section of the body 12. "Cross section" is here understood to mean included in the XY plane perpendicular to the axis A1. The bottom wall 16 comprises an inner face 20 and an outer face 22.

[0089] The bottom wall 16 includes at least a first cavity 24 and a second cavity 26. Figure 1 and 2 In the non-limiting example of , the first cavity 24 passes substantially vertically through the bottom wall 16 between the inner face 20 of the bottom wall and the outer face 22 thereof. Figure 1 In the embodiment, the second cavity 26 extends substantially vertically from the inner face 20 of the bottom wall 16 without passing through the outer face 22. Figure 2 In the embodiment of the present invention, the second cavity 26 has a substantially L-shape, wherein a first portion 26A extends substantially vertically and a second portion 26B extends substantially transversely.

[0090] The first cavity 24 communicates the interior of the collector 10 with at least one first outlet 28 referred to as a discharge outlet, while the second cavity 26 communicates the interior of the collector 10 with at least one second outlet 30 referred to as a recovery outlet. The discharge outlet 28 and the recovery outlet 30 will be described below.

[0091] The side wall 18 extends substantially in the vertical direction Z from the inner face 20 of the bottom wall 16. The side wall 18 forms a closed surface extending around the axis A1 and comprising a radially inner face 32 and a radially outer face 34. "Radial" here corresponds to any direction perpendicular to the vertical direction Z. Preferably, the side wall 18 is substantially cylindrical, having a cross section equal in shape and size to that of the bottom wall 16.

[0092] The side wall 18 includes a first end 18A directly connected to the bottom wall 16 and a second end 18B vertically opposite to the first end 18A. According to a non-limiting example, the second end 18B of the side wall 18 includes a free end 19. In other words, the body 12 does not include any wall opposite to the bottom wall 16 along the direction Z. Figure 6 As can be seen in the figure, the second end 18B of the side wall 18 can include one or more portions 36 that protrude laterally outward from the radially outer face 34 of the side wall 18 of the collector 10 relative to the collector. In the illustrated case, the side wall 18 includes three protruding portions 36, but this is not limiting. Each of the portions 36 includes a hole 38 that is shaped to receive a corresponding removable connection member 37 for connecting the cover 14 to the body 12, as will be described in detail below. Each removable connection member 37 is, for example, a screw or a rivet.

[0093] The cover 14 comprises a wall 40 which is intended to be positioned vertically so that it faces the bottom wall 16. The outer periphery of the wall 40 is intended to be in contact with the free end 19 of the end portion 18B.

[0094] The wall 40 preferably has a cross-section whose shape and size are advantageously equivalent to the shape and size of the bottom wall 16. In some cases, the cross-section of the wall 40 has a size greater than that of the bottom wall 16.

[0095] At least one inlet 44 for draining liquid passes substantially vertically through the wall 40 . Figure 6 4. Three inlets 44 are shown in FIG. 4, but this is not limiting. Each inlet 44 includes a connector 44A for connecting a pipe (not shown) to the corresponding inlet 44, through which the drainage liquid flows until it reaches the collector 10.

[0096] As from Figure 6 As can be clearly seen in FIG. 1 , the wall 40 further comprises one or more portions 46 that protrude transversely outwardly relative to the collector. Advantageously, the number of portions 46 of the wall 40 is equal to the number of portions 36 of the side wall 18 of the body 12. The portions 46 are arranged so that when the cover 14 is placed on the body 12, each portion 46 of the wall 40 is vertically positioned so that it faces the corresponding portion 36 of the side wall 18. Figure 6 In the embodiment shown in FIG. 4 , the wall 40 includes three portions 46 , but this is not limiting. Each of the portions 46 includes a hole 48 shaped to receive a corresponding removable connection member 37 for connecting the cover 14 to the body 12 , as will be described in detail below.

[0097] An annular rim 42, which is intended to radially face the end 18B of the side wall, extends from the wall 40. In particular, the annular rim 42 extends from the wall 40 substantially perpendicularly to the wall 40. The annular rim preferably has a shape complementary to the cross section of the side wall 18, so that when the cover 14 is arranged on the body 12 of the collector, the annular rim engages with the interior of the body 12, for example fits into the interior, in particular transversely adjacent to the second end 18B of the side wall 18. It should be noted that the term "annular" does not assume a circular rim here. On the contrary, the term "annular" here refers to any closed shape, regardless of its geometry.

[0098] The annular rim 42 comprises a radially outer edge 42A facing the radially inner face 32 of the side wall 18 of the body 12 , and a radially inner edge 42B.

[0099] To ensure the fluid tightness of the collector 10 when the cover 14 is arranged on the body 12, the annular rim 42 may comprise a groove 50 extending along the entire radially outer edge 42A thereof. The groove 50 is specifically shaped to receive a seal 52 having a shape complementary to that of the groove 50.

[0100] As noted above, the body 12 and the cover 14 are connected by the removable connecting member 37. The cover 14 is thus removable from the body 12.

[0101] When the cover 14 is arranged on the body 12, an internal cavity 54 is formed in the collector 10. The internal cavity 54 is specifically delimited by the inner face 20 of the bottom wall 16, the radial inner face 32 of the side wall 18 and the cover 14. The internal cavity 54 thus extends longitudinally along the direction Z between a first end closed by the bottom wall 16 of the collector 10 and a second end closed by the cover 14.

[0102] The inner cavity 54 comprises a first space 54A and a second space 54B separated by a partition 56. The partition 56, which will be described in more detail below, is preferably thin-walled. "Thin-walled" is understood to mean that the thickness of the partition 56 is less than 1.5 mm, preferably less than 1 mm.

[0103] like Figure 1 and 2 As can be seen in FIG. 4 , each inlet 44 of the collector is in fluid communication with the first space 54A. The drainage liquid is therefore initially collected in the first space 54A, which will also be referred to below as the collection space 54A.

[0104] The second space 54B is in fluid communication with the recovery outlet 30. Specifically, the second space 54B transfers the liquid collected in the collection space 54A to the recovery outlet 30. And, in the following description, the second space 54B will also be referred to as the transfer space 54B. The recovery outlet 30 includes a connector 30A for connecting a pipe (not shown) to the collector 10, which extends between the collector and another part of the turbine engine, such as a fuel tank or the "ecological" collection tank described above. The drained liquid can therefore be recovered from the collector 10 and sent to other parts of the turbine engine for storage or reuse.

[0105] The partition 56 is liquid-tight. In order to allow the liquid collected in the collection space 54A to travel to the transfer space 54B, the partition 56 includes a drainage liquid passage restriction member 58 that restricts the passage of the drainage liquid from the collection space 54A to the transfer space 54B.

[0106] In the figure, the limiting member 58 extends radially, but this is not restrictive. Specifically, the limiting member 58 can extend in any spatial direction, provided that the inlet into the limiting member 58 corresponds to the outlet from the collection space 54A, and the outlet from the limiting member 58 corresponds to the inlet into the transfer space 54B.

[0107] The limiting member 58 may include an orifice 58A that crosses the partition 58 between the collection space 54A and the transfer space 54B. The diameter of the orifice 58A is less than or equal to 1.5 mm, preferably less than 1 mm. This makes it possible to ensure that the passage of the drainage liquid from the collection space 54A to the transfer space 54B occurs in a controlled manner.

[0108] Alternatively, the limiting member 58 may include a plurality of orifices that cross the partition 56 between the collection space 54A and the transfer space 54B. In this case, each orifice may have a diameter similar to the diameter of the orifice 58A. Alternatively, each orifice of the partition 56 may have a diameter smaller than the orifice 58A, so as to obtain a law governing the flow of drainage liquid between the collection space 54A and the transfer space 54B that is similar to the law obtained when only the orifice 58A crosses the partition 56. "Law governing the flow of drainage liquid" is here understood to mean the volume of drainage liquid transferred per unit time between the collection space 54A and the transfer space 54B.

[0109] When several orifices pass through the partition 56, these orifices can be arranged at the same height relative to the bottom wall 16 of the collector 10 or at different heights. When each orifice of the partition 56 is arranged at different heights, the law governing the flow of drainage liquid between the collection space 54A and the transfer space 54B is different for each orifice. Specifically, the farther the orifice in the partition 56 is from the bottom wall 16 of the collector 10, the slower the flow of drainage liquid. First, the farther the orifice of the partition is from the bottom wall 16, the greater the amount of drainage liquid collected in the collection space must be in order to initiate the flow of drainage liquid through this orifice. And, if other orifices are arranged closer to the bottom wall 16, the drainage liquid preferably flows through the other orifices.

[0110] According to an alternative embodiment, the orifice comprised in the drainage liquid circulation restriction member is arranged in an attachment nozzle (not shown) mounted in an opening in the partition.

[0111] Advantageously, the limiting member 58 is arranged vertically above the bottom wall 16 of the collector. This avoids having the limiting member 58 in areas where impurities accumulate, where the risk of clogging in the limiting member 58 increases.

[0112] It should be noted that the limiting member 58 is preferably mounted so that it can be removed from the collector by moving the drainage liquid circulation limiting member in the direction Z in the sense of the direction from the bottom wall 16 of the collector towards the cover 14 of the collector. This allows the limiting member 58 to be removed from the collector for regular cleaning so as to reduce the risk of blockage in the limiting member 58. In addition, since the limiting member 58 is removed by its movement in the sense of the direction from the bottom wall 16 towards the cover 14 of the collector, the drainage liquid collected in the internal cavity 54 of the collector is unlikely to escape through the bottom wall 16 when the limiting member 58 is removed from the collector 10. Advantageously, the cover 14 is removed from the collector when the limiting member 58 is removed. However, according to a variant not shown, the cover 14 can include a through opening in the wall 40 through which the limiting member 58 can be removed without removing the cover 14.

[0113] The restraining member 58 may be movable along the direction Z independently of the divider 56 or integrally with the divider 56 , as will be described in detail below.

[0114] exist Figure 1 14, the partition 56 forms a separation wall extending substantially vertically from the bottom wall 16 of the collector into the interior cavity 54. The separation wall 56 may be fixedly or removably attached to the bottom wall 16. When the separation wall 56 is removably mounted on the bottom wall, the limiting member 58 can be removed from the collector 10 by vertically moving the separation wall 56 in a direction from the bottom wall 16 to the cover 14. Alternatively, the separation wall 56 may be formed as an integral piece with the bottom wall 16 of the collector.

[0115] The separation wall 56 includes a main wall extending radially from a portion of the inner face 32 of the side wall 18 facing the body 12, and two secondary walls (not shown) radially connecting the ends of the main wall to the inner face 32 of the side wall 18. A transfer space 54B is then defined between the separation wall 56 and the inner face 32 of the side wall 18. The separation wall 56 is arranged in the inner cavity 54 so that the entrance to the second cavity 26 is included in the transfer space 54B.

[0116] Advantageously, the separation wall 56 does not extend as far as the cover 14, which allows the air in the collecting space 54A to communicate with the air in the transfer space 54B. The air pressure in the collecting space 54A and in the transfer space 54B is therefore the same.

[0117] It should be noted that the restricting member 58 is arranged on the end of the separation wall 56 which is connected at the distal end thereof to the bottom wall 16 of the collector 10 .

[0118] exist Figure 2 , the separator 56 forms a tube 60. Now referring to Figures 3 to 5 In order to describe the tube 60.

[0119] like Figure 3 As can be seen in FIG. 6 , the tube 60 extends in the longitudinal direction L1. Figure 2 As can be seen in FIG. 6 , when the tube 60 is arranged in the internal cavity 54 of the collector 10 , the longitudinal direction L1 is substantially parallel to the axis A1 of the collector 10 .

[0120] The tube 60 is hollow and substantially cylindrical, with a circular or polygonal cross-section.

[0121] The tube 60 includes a first end 60A and a second end 60B interconnected by a middle portion 60C.

[0122] Now refer to Figure 4 The first end portion 60A is described.

[0123] The first end 60A of the tube 60 carries the flow restriction member 58. In the figure, the flow restriction member 58 includes a single orifice 58A, but it can include several orifices. In a non-limiting example, each orifice 58A can be included in a nozzle attached to the opening, as noted above.

[0124] The first end 60A of the tube 60 includes an insert portion 62. The insert portion is shaped for insertion into a housing in the bottom wall of the collector 16, such as in Figure 2 The housing in the bottom wall is in fluid communication with the recovery outlet 30. In this case, the housing in the bottom wall 16 corresponds to the first portion 26A of the cavity 26.

[0125] Insert portion 62 fits into housing 26A. Insert portion 62 advantageously includes Figure 6 A preferably annular groove 64 is visible in the bottom wall 16, in which an annular gasket 66 is mounted. The gasket 66 ensures the liquid tightness of the tube 60 mounted in the housing 26A of the bottom wall 16. In particular, the gasket 66 limits the flow of drainage liquid between the surface of the housing 26A and the insert 62. Alternatively, the liquid tightness of the mounting of the tube may be a face seal via a gasket or via metal-to-metal contact.

[0126] Preferably, the tube 60 is mounted in the housing 26A so as to be removable. This makes it possible to remove the tube 60 from the internal cavity 54 of the collector 10 by moving it along the direction Z in the sense of the direction from the bottom wall 16 towards the cover 14, as indicated above. It is thus possible to clean the flow restriction 58 and to monitor that it is not blocked, as also explained above.

[0127] The first end portion 60A further comprises a stop member 68 for abutting against the bottom wall 16. The stop member 68 protrudes radially outward from the tube 60 relative to the insertion portion 62. Thus, when the insertion portion 62 of the tube 60 is inserted into the housing 26A, the stop member 68 abuts against the inner face of the bottom wall 16. In the figures, the stop member 68 is a flange, but any other shape protruding radially outward from the tube 60 relative to the insertion portion 62 is conceivable.

[0128] The stop means 68 are arranged between the flow restriction member 58 and the insertion portion 62. This allows ensuring that the flow restriction member 58 is arranged at a height between the bottom wall 16 of the collector and the cover 14 of the collector which, as indicated above, prevents the flow restriction member from being positioned in an area of ​​accumulation of impurities which would contribute to clogging.

[0129] Now refer to Figure 5 The second end 60B of the tube 60 is described.

[0130] The second end 60B carries at least one pressure balance orifice 70 that puts the air in the collection space 54A in communication with the air in the transfer space 54B. In particular, the pressure balance orifice 70 passes through the tube 60 between the first space 54A and the second space 54B of the interior cavity 54.

[0131] Preferably, the second end carries a plurality of pressure-balancing orifices 70 distributed equidistantly around the longitudinal direction L1 of the tube 60. By way of example, the second end of the tube 60 carries six pressure-balancing orifices 70.

[0132] Each pressure balancing orifice is sized to allow the pressure in the collection space 54A to be the same as the pressure in the transfer space 54B. Advantageously, the diameter of each pressure balancing orifice is greater than the diameter of the flow restriction member 58, in particular the diameter of the orifice 58A. For example, each pressure balancing orifice has a diameter greater than 1.5 mm and less than 3 mm. Preferably, the diameter of each pressure balancing orifice is between 1.7 mm and 2.5 mm. For example, the diameter of each pressure balancing orifice is equal to 2 mm.

[0133] In order to avoid vibrational movement that the second end 60B may be subjected to due to the presence of drainage liquid in the collection space 54A, the second end 60B of the tube 60 is preferably connected to the cover 14. For this purpose, the second end 60B includes a connecting pin 72, and the cover 14 includes a Figure 2 and 6 The tube cap 74 is visible in FIG. Figure 2 As can be seen in the figure, the pin 72 and the cap 74 have complementary shapes, which allow the pin 72 to be locked in the cap 74. In a variant, the tube 60 can also pass through the cover 14, in particular the wall 40 of the cover. The tube 60 can thus be centered in the cover 14 and / or fixed to the cover.

[0134] 1, 2 and 6, the collecting space 54A further comprises an overflow channel 76. A first end of the overflow channel 76 is connected to the discharge outlet 28. The overflow channel 76 is thus in fluid communication with the discharge outlet 28. This discharge outlet comprises a connector 28A which allows a pipe (not shown) to be connected to the collector 10, thereby placing the collector 10 in communication with an external turbine engine.

[0135] The second end of the overflow channel 76 comprises an inlet port 78 for the entry of the liquid collected in the collecting space 54A. The inlet port 78 is arranged vertically at a height relative to the bottom wall 16 of the collector, said height being between the height of the restricting member 58 and the height of the pressure balancing orifice 70. When the restricting member 58 comprises several orifices as explained above, the inlet port 78 is arranged vertically at a height between the orifice of the restricting member 58 vertically furthest from the bottom wall 16 and the pressure balancing orifice 70. The height of the inlet port 78 defines a horizontal plane called the "overflow level".

[0136] In the figures, the overflow channel 76 extends along the direction Z, but any other shape of the overflow channel is possible, provided that the inlet port 78 is arranged in the collecting space 54A and a first end of the overflow channel 76 is fluidly connected to the discharge outlet 28 .

[0137] The operation of the collector 10 when in operation will now be described.

[0138] First, the drainage liquid reaches the collection space 54A through one of the inlets 54A. The height of the drainage liquid in the collection space 54A gradually increases. The height of the drainage liquid is measured vertically with respect to the bottom wall 16 of the collector 10.

[0139] When the drained liquid reaches the height of the restriction member 58 , the liquid starts to flow from the collection space 54A toward the transfer space 54B through the restriction member 58 . The drained liquid thus starts to leave the collector 10 via the recovery outlet 30 .

[0140] If the flow rate of the drain liquid reaching the collection space 54A is greater than the flow rate of the drain liquid flowing through the restriction member 58, the height of the drain liquid in the cavity exceeds the height of the restriction member 58 and may reach the overflow level. In this case, the drain liquid also starts to flow through the overflow channel 76 toward the drain outlet 28. The drain liquid is thus discharged to the external turbine engine, which may indicate a malfunction of the turbine engine.

[0141] The invention also relates to a turbine engine, such as a turbojet engine or a turboprop engine, comprising at least one collector 10 as described above.

[0142] It should be noted that, due to the equalization of the pressure between the collection space and the transfer space, in the collector described above, the pressure difference across the drainage liquid flow restriction member depends only on the height of the drainage liquid collected in the collection space 54A. The conditions of use of the collector, such as the increase in air pressure in the internal cavity 54 of the collector 10 or the flow rate of the drainage liquid entering the internal cavity 54, and the installation conditions of the collector 10, such as the length of the pipeline at the outlet of the collector, therefore have no influence on the pressure difference across the flow rate restriction member 58.

[0143] Furthermore, since the pressure difference across the flow rate limiting member 58 is independent of the installation conditions of the collector 10 and its use conditions, in particular the air pressure in the internal cavity 54, it is possible to control the flow rate of the drained liquid, beyond which the liquid will overflow through the overflow channel 76. This therefore allows controlling a leakage flow rate threshold of the drained liquid, beyond which a failure of the turbine engine is detected due to the overflow of the drained liquid through the overflow channel 76.

[0144] The present disclosure is not limited to the collector examples described above merely as examples, but encompasses all variants conceivable by a person skilled in the art within the framework of the protection sought.

Claims

1. A collector (10) for drained liquid of an aircraft turbine engine, the collector comprising: - an internal cavity (54) comprising a first space (54A) for collecting the drained liquid and a second space (54B) for transferring the collected liquid to a recovery outlet (30), the internal cavity extending longitudinally in a first direction (Z) between a first end closed by a bottom wall (16) of the collector and a second end closed by a cover (14) of the collector; - at least one inlet (44) for said drainage liquid, said at least one inlet being in fluid communication with said first space (54A); and - at least one recovery outlet (30), the at least one recovery outlet being in fluid communication with the second space (54B); wherein the first space (54A) and the second space (54B) are separated from each other by a liquid-tight partition (56), a drainage liquid flow restriction member (58) is arranged in the liquid-tight partition, the drainage liquid flow restriction member restricts the flow of the drainage liquid from the first space to the second space, the flow restriction member includes at least one orifice (58A), And wherein the drainage liquid circulation restriction member is installed so that it can be removed from the collector (10) by moving the drainage liquid circulation restriction member along the first direction (Z) in the sense of a direction extending from the bottom wall (16) of the collector toward the cover (14) of the collector.

2. The collector (10) according to claim 1, characterized in that: The partition (56) forms a tube (60) which is mounted so as to be removable from the collector (10) by moving the tube along the first direction (Z) in the sense of a direction extending from the bottom wall (16) of the collector (10) towards the cover (14) of the collector.

3. The collector (10) according to claim 2, characterized in that: The tube (60) comprises a first end (60A) directly connected to the bottom wall (16) of the collector and a second end (60B) connected to the cover (14) of the collector.

4. Collector (10) according to the preceding claim, characterized in that The drainage liquid circulation restriction member (58) is included in the first end (60A) of the tube, at a height above the level of the internal face (20) of the bottom wall (16) of the collector.

5. The collector (10) according to claim 3 or 4, characterized in that: The first end portion (60A) of the tube includes an insertion portion (62) that is inserted into a housing in the bottom wall (16) of the collector.

6. Collector (10) according to the preceding claim, characterized in that The first end portion (60A) includes a stop member (68), such as a flange, on the bottom wall (16) that protrudes radially outward from the tube (60) relative to the insertion portion (62), and the stop member (68) is arranged between the drainage liquid circulation restriction member (58) and the insertion portion (62).

7. The collector (10) according to any one of claims 5 or 6, characterized in that: The insert portion (62) of the first end of the tube (60) comprises an annular groove (64) in which an annular gasket (66) is mounted, the annular gasket resting against an annular surface facing the housing.

8. The collector (10) according to any one of claims 3 to 7, characterized in that The second end (60B) of the tube includes at least one pressure balancing orifice (70) that passes through the tube between the first space (54A) and the second space (54B) of the interior cavity (54).

9. The collector (10) according to any one of claims 3 to 8, characterized in that The second end portion (60B) comprises a connecting pin (72) for connecting the tube to the cover (14) of the collector.

10. Collector (10) according to the preceding claim, characterized in that The collector cover (14) comprises a tube cap (74) having a shape complementary to the shape of the connecting pin (72) of the tube (60).

11. Turbine engine, such as a turbojet or turboprop, comprising at least one collector (10) according to any one of the preceding claims.

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