CN112796911A

CN112796911A - Variable-volume air inlet box for ship engine and power system

Info

Publication number: CN112796911A
Application number: CN202011519157.7A
Authority: CN
Inventors: 李彦男; 张东明; 黄立; 陈晓轩; 李翔; 张文正
Original assignee: 711th Research Institute of CSIC
Current assignee: Shanghai Marine Diesel Engine Research Institute; 711th Research Institute of CSIC
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-05-14

Abstract

The invention discloses a variable-volume air inlet box for a ship engine and a power system. The variable-volume air inlet box comprises a box body and an adjusting mechanism, the adjusting mechanism is connected with the box body, the adjusting mechanism comprises a first partition plate and a second partition plate, the first partition plate and the second partition plate are located inside the box body, the first partition plate and the second partition plate can move between a closed position and an open position, the box body is divided into a first cavity and a second cavity by the first partition plate and the second partition plate located at the closed position, and the first partition plate and the second partition plate located at the closed position can move to the open position to be separated respectively, so that the first cavity is communicated with the second cavity. The variable-volume air inlet box disclosed by the invention can be suitable for different working conditions, and the effective volume of the variable-volume air inlet box can be adjusted by changing the positions of the first partition plate and the second partition plate, so that the air inlet requirements of a ship engine under different working conditions are met.

Description

Variable-volume air inlet box for ship engine and power system

Technical Field

The invention relates to the technical field of ship engines, in particular to a variable-volume air inlet box and a power system for a ship engine.

Background

The intake box of existing marine engines is typically a fixed volume. However, no matter the air inlet box of the traditional structure is arranged inside or outside the ship engine, the air inlet box is of a single cavity structure, and the volume of the air inlet box is fixed and cannot be adjusted according to different working condition requirements of the ship engine.

Accordingly, there is a need to provide a variable volume intake box and power system for a marine engine that at least partially addresses the above-mentioned problems.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In order to at least partially solve the above problems, according to a first aspect of the present invention, there is provided a variable volume intake box for a marine engine, the variable volume intake box comprising a box body and an adjustment mechanism connected to the box body, the adjustment mechanism including a first partition and a second partition, the first partition and the second partition being located inside the box body,

wherein the first and second partitions are each movable between a closed position and an open position,

the first and second partitions in the closed position divide the tank into first and second chambers,

the first partition and the second partition in the closed position are respectively movable to the open position to be separated so that the first chamber and the second chamber are communicated.

According to the variable volume intake box for the ship engine, the variable volume intake box comprises a box body and an adjusting mechanism, the adjusting mechanism is connected with the box body, the adjusting mechanism comprises a first partition plate and a second partition plate, the first partition plate and the second partition plate are located inside the box body, the first partition plate and the second partition plate are movable between a closed position and an open position, the box body is divided into a first chamber and a second chamber by the first partition plate and the second partition plate located in the closed position, and the first partition plate and the second partition plate located in the closed position can be respectively moved to the open position to be separated, so that the first chamber and the second chamber are communicated. Like this, variable volume inlet box can be applicable to different operating modes, realize the effective volume of adjusting variable volume inlet box through the position that changes first baffle and second baffle, the volume of variable volume inlet box is continuous variable, in order to satisfy the demand of admitting air of marine engine's different operating modes, make marine engine homoenergetic obtain suitable air intake state in different operating modes, the air intake state is adjustable, make the quick build-up pressure of admitting air of box all can be realized in each operating mode, reduce the turbine delay, energy-conservation is reliable, can satisfy intelligent development demand.

Optionally, the first chamber has an air inlet and at least one air outlet, the central axes of the air inlet and the air outlet being perpendicular.

Optionally, the adjusting mechanism further includes a first rotating mechanism and a second rotating mechanism, the first rotating mechanism is connected with the first partition plate to enable the first partition plate to rotate between the closed position and the open position, and the second rotating mechanism is connected with the second partition plate to enable the second partition plate to rotate between the closed position and the open position.

Optionally, the first rotating mechanism includes a first rotating assembly and a first shaft, the first partition includes a first sleeve, the first shaft is connected to the box body, the first sleeve is sleeved on the first shaft, and the first rotating assembly is connected to the first sleeve to drive the first partition to rotate relative to the first shaft.

Optionally, the second rotating mechanism includes a second rotating assembly and a second shaft, the second partition includes a second sleeve, the second shaft is connected to the box body, the second sleeve is sleeved on the second shaft, and the second rotating assembly is connected to the second sleeve to drive the second partition to rotate relative to the second shaft.

Optionally, the adjusting mechanism further includes an operating mechanism, the operating mechanism includes an input component and an intermediate rotating component, the input component is connected to the second rotating component through the intermediate rotating component, and the input component is further connected to the first rotating component.

Optionally, the first rotating assembly includes a first gear, the second rotating assembly includes a second gear, the input assembly includes an input gear, the intermediate rotating assembly includes an intermediate gear, the input gear is engaged with both the first gear and the intermediate gear, the intermediate gear is engaged with the second gear, and a rotation direction of the first gear is opposite to a rotation direction of the second gear.

Optionally, the adjusting mechanism further comprises a connecting plate connected to the adjusting mechanism and the box body.

Optionally, the box body is provided with a box body connecting hole, the connecting plate is connected with the outer surface of the box body, and a part of the adjusting mechanism extends out of the box body connecting hole and is connected with the connecting plate.

The invention also provides a power system which comprises a ship engine and the variable volume air inlet box, wherein the variable volume air inlet box is positioned inside or outside the ship engine, and/or the ship engine is a medium-speed marine diesel engine.

According to the power system, the power system comprises a ship engine and a variable volume air inlet box, the variable volume air inlet box comprises a box body and an adjusting mechanism, the adjusting mechanism is connected with the box body, the adjusting mechanism comprises a first partition plate and a second partition plate, the first partition plate and the second partition plate are located inside the box body, the first partition plate and the second partition plate can move between a closed position and an open position, the box body is divided into a first chamber and a second chamber by the first partition plate and the second partition plate located in the closed position, the first partition plate and the second partition plate located in the closed position can respectively move to the open position to be separated, the first chamber and the second chamber are communicated, the variable volume air inlet box is located inside or outside the ship engine, and/or the ship engine is a medium-speed ship diesel engine. Like this, variable volume inlet box can be applicable to different operating modes, realize the effective volume of adjusting variable volume inlet box through the position that changes first baffle and second baffle, the volume of variable volume inlet box is continuous variable, in order to satisfy the demand of admitting air of marine engine's different operating modes, make marine engine homoenergetic obtain suitable air intake state in different operating modes, the air intake state is adjustable, make the quick build-up pressure of admitting air of box all can be realized in each operating mode, reduce the turbine delay, energy-conservation is reliable, can satisfy intelligent development demand.

Drawings

The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles and apparatus of the invention. In the drawings, there is shown in the drawings,

FIG. 1 is a cross-sectional view of a power system in accordance with a preferred embodiment of the present invention, wherein both the first partition and the second partition are in a closed position;

FIG. 2 is a cross-sectional view of the power system shown in FIG. 1, wherein the first partition and the second partition are both in an open position;

FIG. 3 is a perspective view of the adjustment mechanism shown in FIG. 1;

FIG. 4 is an exploded view of the adjustment mechanism shown in FIG. 3; and

fig. 5 is an exploded view of a portion of the adjustment mechanism shown in fig. 4.

Description of reference numerals:

100: variable volume intake box 110: box body

111: first chamber 112: second chamber

113: intake box intake port 114: air outlet of air inlet box

120: the adjusting mechanism 121: first partition board

122: second separator 123: first sleeve

124: second sleeve 131: first rotating mechanism

132: second rotation mechanism 133: first rotating assembly

134: first shaft 135: second rotating assembly

136: second shaft 137: first gear

138: first gear shaft 139: second gear

140: second gear shaft 141: first retainer ring

142: second stopper ring 150: operating mechanism

151: the input assembly 152: intermediate rotating assembly

153: input gear 154: input shaft

155: intermediate gear 156: intermediate gear shaft

157: the motor 158: emergency handle

160: connecting plate 161: connecting hole of connecting plate

200: marine engine 201: cylinder

202: cylinder air inlet

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.

In the following description, for purposes of explanation, specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details set forth herein as are known to those of skill in the art. The following detailed description of the preferred embodiments of the present invention, however, the present invention may have other embodiments in addition to the detailed description, and should not be construed as being limited to the embodiments set forth herein.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, as the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. When the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like as used herein are for purposes of illustration only and are not limiting.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

In the following, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the invention and do not limit the invention.

The invention provides a variable-volume air inlet box for a ship engine, wherein the volume inside the variable-volume air inlet box can be adjusted so as to be adjusted according to different working condition requirements of the ship engine. The variable volume intake box can be arranged inside or outside the marine engine according to the overall arrangement requirement of the marine diesel engine so as to adapt to different conditions.

As shown in fig. 1 and 2, the variable volume intake box 100 is provided inside the marine engine 200 to save space. Of course, in an embodiment not shown, the variable volume intake box 100 may also be provided outside the marine engine 200 to facilitate maintenance and reduce costs.

The variable volume intake box 100 includes a box body 110 and an adjustment mechanism 120, the box body 110 being for containing a gas, such as air or a combustible gas. The tank 110 communicates with the marine engine 200 to supply gas to the marine engine 200. For example, the marine engine 200 may include a cylinder 201, and the tank 110 may communicate with the cylinder 201 to supply gas to the cylinder 201. The adjustment mechanism 120 is connected to the case 110. Specifically, the adjustment mechanism 120 includes a first partition 121 and a second partition 122, and the first partition 121 and the second partition 122 are both located inside the case 110 to adjust the effective volume of the case 110.

The first and

second partitions

121 and 122 are each movable between a closed position and an open position. The first and

second partitions

121 and 122 in the closed position divide the case 110 into the first and

second chambers

111 and 112. For ease of distinction, the first shutter 121 is movable between a first closed position and a first open position, and the second shutter 122 is movable between a second closed position and a second open position. As shown in fig. 1, the first barrier 121 in the first closed position and the second barrier 122 in the second closed position divide the case 110 into the first chamber 111 and the second chamber 112, the gas of the first chamber 111 cannot flow to the second chamber 112, and the gas of the second chamber 112 cannot flow to the first chamber 111.

The first barrier 121 in the first closed position and the second barrier 122 in the second closed position are closely attached to each other to partition the case 110. The first barrier 121 includes a first surface and the second barrier 122 includes a second surface. A first surface of the first barrier 121 in the first closed position may abut a second surface of the second barrier 122 in the second closed position. The first surface located at the first closed position faces the second surface located at the second closed position in the thickness direction of the first barrier 121. A projection of the first surface in the thickness direction of the first barrier 121 in the first closed position may coincide with a projection of the second surface in the second closed position. In this way, the tightness of the first diaphragm 121 in the first closed position and the second diaphragm 122 in the second closed position is ensured.

Of course, in an embodiment not shown, the first baffle plate may also include a first end surface and the second baffle plate includes a second end surface. The first end surface of the first partition in the first closed position may be in close abutment with the second end surface of the second partition in the second closed position. The first end surface in the first closed position faces the second end surface in the second closed position along the length of the first partition. In this way, the tightness of the first partition in the first closed position and the second partition in the second closed position is also ensured.

The variable volume inlet box 100 includes an inlet box inlet 113 and an inlet box outlet 114, both the inlet box inlet 113 and the inlet box outlet 114 being provided to the box 110. The central axes of the inlet box air inlet 113 and the inlet box air outlet 114 may be perpendicular. Optionally, the cabinet 110 further includes a top wall and a side wall, which may be vertically connected. The side walls have an inlet box air inlet 113 and the top wall has at least one inlet box air outlet 114. Thereby, the arrangement of the inlet tank inlet 113 and the inlet tank outlet 114 is facilitated.

Gas may enter the interior of the tank 110 via the inlet tank inlet 113 and gas within the interior of the tank 110 may exit via the inlet tank outlet 114. Preferably, the cylinder 201 has a cylinder inlet port 202, the inlet box outlet port 114 communicates with the cylinder inlet port 202, and gas from the variable volume inlet box 100 can enter the cylinder 201 through the inlet box outlet port 114 and the cylinder inlet port 202.

Preferably, the variable volume intake box 100 may comprise at least one intake box outlet port 114, and the marine engine 200 may comprise at least one cylinder 201, the at least one intake box outlet port 114 being in communication with the at least one cylinder 201, respectively, such that gas in the variable volume intake box 100 enters the at least one cylinder 201 through the at least one intake box outlet port 114, respectively. The number of the inlet box outlets 114 is the same as the number of the cylinders 201, for example, the marine engine 200 may be a single cylinder, a double cylinder, a four cylinder or a six cylinder engine, and the number of the inlet box outlets 114 and the number of the cylinders 201 may be one, two, four or six, respectively.

An inlet box inlet 113 and at least one inlet box outlet 114 may be provided to the first chamber 111 or the second chamber 112. Thereby to adjust the amount of gas in the variable volume intake box 100. The first chamber 111 is located above the second chamber 112 in the height direction of the variable volume intake box 100.

Optionally, the first chamber 111 has an inlet box inlet 113 and at least one inlet box outlet 114 and the second chamber 112 does not have an inlet box inlet 113 and an inlet box outlet 114. Both the inlet box air inlet 113 and the at least one inlet box air outlet 114 communicate with the interior of the first chamber 111. Gas may enter the first chamber 111 via the inlet box gas inlet 113 and gas inside the first chamber 111 may exit via the at least one inlet box gas outlet 114.

The first diaphragm 121 in the first closed position and the second diaphragm 122 in the second closed position separate the first chamber 111 from the second chamber 112. Gas cannot enter the second chamber 112 through the inlet box inlet 113 and gas in the second chamber 112 cannot exit through the inlet box outlet 114. In this way, the variable volume intake box 100 may have a smaller volume, such that the variable volume intake box 100 may be adapted to an accelerated loading condition, may be depressurized quickly, and may reduce turbo lag.

Of course, in an embodiment not shown, the second chamber has an inlet box inlet and at least one inlet box outlet, and the first chamber does not have an inlet box inlet and at least one inlet box outlet. The air inlet of the air inlet box and the air outlet of the at least one air inlet box are communicated with the inside of the second chamber. Gas may enter the second chamber via the inlet box gas inlet and gas inside the second chamber may exit via the at least one inlet box gas outlet. A first diaphragm in a first closed position and a second diaphragm in a second closed position separate the first chamber from the second chamber. The gas cannot enter the first chamber through the inlet of the inlet box, and the gas in the first chamber cannot be discharged through the outlet of the inlet box.

As shown in fig. 2, the first and

second partitions

121 and 122 in the closed position can be moved to the open positions to be separated, respectively, so that the first and

second chambers

111 and 112 are communicated. The first shutter 121 in the first closed position may be moved to the first open position. The second partition 122 in the second closed position may be moved to the second open position.

The first and

second partitions

121 and 122 are movable, respectively. The first diaphragm 121 in the first open position may be spaced apart from the second diaphragm 122 in the second closed position to allow the first and

second chambers

111 and 112 to communicate. The second diaphragm 122 in the second open position may be spaced apart from the first diaphragm 121 in the first closed position to allow the first and

second chambers

111 and 112 to communicate. The first barrier 121 in the first open position may be spaced apart from the second barrier 122 in the second open position to allow the first and

second chambers

111 and 112 to communicate.

The gas in the first chamber 111 may enter the second chamber 112, and the gas in the second chamber 112 may enter the first chamber 111. In this way, the effective volume of the interior of the variable volume intake box 100 is expanded. The first chamber 111 has an inlet tank inlet 113 and at least one inlet tank outlet 114, the first chamber 111 is in communication with the second chamber 112, gas from the inlet tank inlet 113 may enter the second chamber 112, and gas within the second chamber 112 may exit through the at least one inlet tank outlet 114.

The volume in the first chamber 111 may be V1 and the volume in the second chamber 112 may be V2. The first barrier 121 in the first closed position and the second barrier 122 in the second closed position separate the case 110. The volume of gas exiting the inlet box outlet port 114 is approximately equal to the volume of the first chamber 111, i.e., the volume V1 of gas exiting the inlet box outlet port 114.

The first and

second partitions

121 and 122 located at the closed position are respectively moved to the open position to communicate the first and

second chambers

111 and 112. The volume of gas discharged from the inlet box outlet port 114 is approximately equal to the sum of the volume of the first chamber 111 and the volume of the second chamber 112, i.e., the volume of gas discharged from the inlet box outlet port 114 may be approximately V3, V3 ═ V1+ V2. Therefore, the volume of the variable volume intake box 100 is enlarged, the effective volume of the variable volume intake box 100 is continuously enlarged, and the whole variable volume intake box 100 can be filled with intake air, so that the variable volume intake box 100 can be applied to a steady-state working condition to reduce uneven work of each cylinder 201 caused by uneven intake air flow of each cylinder 201.

The specific structure of the adjustment mechanism 120 is described below.

As shown in fig. 3, the adjusting mechanism 120 further includes a first rotating mechanism 131 and a second rotating mechanism 132, and the first rotating mechanism 131 is connected to the first barrier 121 to enable the first barrier 121 to rotate between the closed position and the open position. The first rotating mechanism 131 is located inside the case 110 and is connected to the case 110. The first barrier 121 is coupled to the inner surface of the case 110 by the first rotating mechanism 131. The first rotating mechanism 131 can rotate to rotate the first partition 121 between the first closed position and the first open position. In this way, the space occupied by the adjustment mechanism 120 can be saved, and the effective volume of the variable volume intake box 100 is ensured.

Optionally, the first rotating mechanism 131 can rotate in a first direction to rotate the first partition 121 located at the first closed position to the first open position. The first rotating mechanism 131 can rotate along the second direction to rotate the first partition 121 located at the first opening position to the first closing position. For convenience of distinction, in the present embodiment, "the first direction" refers to a counterclockwise direction, and "the second direction" refers to a clockwise direction. Of course, the "first direction" may be a clockwise direction, and the "second direction" may be a counterclockwise direction, which is not limited in the present embodiment.

The second rotating mechanism 132 is connected with the second barrier 122 to enable the second barrier 122 to rotate between the closed position and the open position. The second rotating mechanism 132 is located inside the case 110 and is connected to the case 110. The second barrier 122 is coupled to the inner surface of the case 110 by the second rotating mechanism 132. The second rotating mechanism 132 can rotate to rotate the second partition 122 between the second closed position and the second open position.

Alternatively, the first and

second diaphragms

121, 122 rotate in opposite directions. The second rotating mechanism 132 can rotate in the second direction to rotate the second partition 122 located at the second closed position to the second open position. The second rotating mechanism 132 can rotate in the first direction to rotate the second partition 122 located at the second open position to the second closed position. In this way, the space occupied by the adjustment mechanism 120 can be saved, and the effective volume of the variable volume intake box 100 is ensured.

Further, the first rotating mechanism 131 includes a first rotating assembly 133 and a first shaft 134, and both the first rotating assembly 133 and the first shaft 134 are connected to the box 110. The axial direction of the first shaft 134 is substantially parallel to the length direction of the first partition 121. The first shaft 134 and the first rotating assembly 133 are oppositely disposed along the length direction of the first barrier 121. The first rotating assembly 133 and the first shaft 134 are both connected to the first diaphragm 121.

Specifically, as shown in fig. 4, the first partition 121 includes a first sleeve 123, and the first sleeve 123 is disposed on the first shaft 134. The first shaft 134 is coupled to the inner surface of the case 110 by bolts. The axial direction of the first sleeve 123 is parallel to the axial direction of the first shaft 134. The first sleeve 123 is a clearance fit with the first shaft 134. The first sleeve 123 is rotatable relative to the first shaft 134. In order to prevent the first partition 121 from moving in the longitudinal direction of the first partition 121, the first shaft 134 is provided with a first retainer ring 141 for axial retention. The first rotating member 133 is connected to the first sleeve 123 to rotate the first diaphragm 121 relative to the first shaft 134. This makes the structure simple and enables stable rotation.

More specifically, the first rotating assembly 133 includes a first gear 137 and a first gear shaft 138, and the first gear shaft 138 is connected to the first sleeve 123. The axial direction of the first gear shaft 138 is parallel to the axial direction of the first sleeve 123. The first gear shaft 138 can extend into the first sleeve 123. Both ends of the first sleeve 123 in the length direction of the first partition 121 are connected to the first shaft 134 and the first gear shaft 138, respectively. For example, the first gear shaft 138 may be a spline shaft, and the first gear shaft 138 and the first sleeve 123 may be splined together. The first gear shaft 138 and the first sleeve 123 may be co-rotatable, the first sleeve 123 being rotatable relative to the first shaft 134. In order to prevent the first gear shaft 138 from shifting in the axial direction of the first gear shaft 138, the first gear shaft 138 is provided with a second retainer ring 142 for axial retention.

The first gear shaft 138 is disposed coaxially with the first gear 137, and the first gear 137 is rotatable to rotate the first gear shaft 138 and the first sleeve 123, thereby rotating the first partition 121 between the first closed position and the first open position. The first gear 137 can rotate in a first direction to rotate the first partition 121 located at the first closed position to the first open position. The first gear 137 can rotate along the second direction to drive the first partition 121 located at the first opening position to rotate to the first closing position. From this, the gear drive scheme is simple and the structure is reliable, and the gear dismouting of being convenient for and maintainability are good.

Returning now to fig. 3, the second rotation mechanism 132 includes a second rotation assembly 135 and a second shaft 136, both the second rotation assembly 135 and the second shaft 136 being connected to the case 110. The axial direction of the second shaft 136 is substantially parallel to the length direction of the second partition 122. The axial direction of the second shaft 136 is parallel to the axial direction of the first shaft 134. The second shaft 136 and the second rotating assembly 135 are oppositely disposed along the length of the second partition 122. Second rotating assembly 135 and second shaft 136 are both coupled to second partition 122.

Specifically, as shown in fig. 4, the second partition 122 includes a second sleeve 124, and the second sleeve 124 is disposed on the second shaft 136. The second shaft 136 is coupled to the inner surface of the case 110 by a bolt. The axial direction of the second sleeve 124 is parallel to the axial direction of the second shaft 136. The second sleeve 124 is clearance fit with the second shaft 136. The second sleeve 124 is rotatable relative to the second shaft 136. To prevent the second partition 122 from moving along the length of the second partition 122, the second shaft 136 is provided with a retainer ring for axial retention. The second rotating member 135 is coupled to the second sleeve 124 to rotate the second partition 122 relative to the second shaft 136. This makes the structure simple and enables stable rotation.

More specifically, the second rotating assembly 135 includes a second gear 139 and a second gear shaft 140, and the second gear shaft 140 is connected with the second sleeve 124. The axial direction of the second gear shaft 140 is parallel to the axial direction of the second sleeve 124. The second gear shaft 140 can extend into the second sleeve 124. Both ends of the second sleeve 124 in the length direction of the second partition 122 are connected to the second shaft 136 and the second gear shaft 140, respectively. For example, the second gear shaft 140 may be a splined shaft, and the second gear shaft 140 and the second sleeve 124 may be splined together. The second gear shaft 140 and the second sleeve 124 may rotate together, with the second sleeve 124 being rotatable relative to the second shaft 136. In order to prevent the second gear shaft 140 from shifting in the axial direction of the second gear shaft 140, the second gear shaft 140 is provided with a retainer ring for axial restraint.

The second gear shaft 140 is coaxially disposed with the second gear 139, and the second gear 139 is rotatable to rotate the second gear shaft 140 and the second sleeve 124, thereby rotating the second diaphragm 122 between the first closed position and the first open position. The second gear 139 can rotate in a second direction to rotate the second partition 122 located at the second closed position to the second open position. The second gear 139 can rotate in the first direction to rotate the second partition 122 located at the second open position to the second closed position. From this, the gear drive scheme is simple and the structure is reliable, and the gear dismouting of being convenient for and maintainability are good.

Further, as shown in fig. 3, the adjusting mechanism 120 further includes an operating mechanism 150, and the operating mechanism 150 is connected to both the first rotating mechanism 131 and the second rotating mechanism 132. Specifically, the operating mechanism 150 includes an input member 151 and an intermediate rotating member 152, and the input member 151 is rotatable. As shown in fig. 4, the input assembly 151 may include an input gear 153 and a motor 157, the motor 157 including an input shaft 154. The axial direction of the input shaft 154 is parallel to both the axial direction of the first sleeve 123 and the axial direction of the second sleeve 124. The motor 157 operates to enable rotation of the input shaft 154. The input gear 153 is disposed coaxially with the input shaft 154, and the input shaft 154 rotates to rotate the input gear 153.

The input assembly 151 is connected to the first rotating assembly 133, and preferably, the input gear 153 may be engaged with the first gear 137. The rotation of the input gear 153 can drive the first gear 137 to rotate, thereby driving the first partition 121 to rotate. Input assembly 151 may also be coupled to second rotating assembly 135 via intermediate rotating assembly 152. In this way, the input assembly 151 can rotate the second rotating assembly 135, and the rotating direction of the second partition plate 122 is opposite to the rotating direction of the first partition plate 121, so that the first partition plate 121 and the second partition plate 122 located at the closed position can be abutted against each other, and the first partition plate 121 and the second partition plate 122 located at the open position can be separated.

The intermediate rotary assembly 152 includes an intermediate gear 155 and an intermediate gear shaft 156, the intermediate gear shaft 156 being disposed coaxially with the intermediate gear 155. The axial direction of the intermediate gear shaft 156 is parallel to the axial direction of the second sleeve 124. The intermediate gear shaft 156 may be fixed to the case 110 by bolts. The intermediate gear 155 is sleeved on the intermediate gear shaft 156, the intermediate gear 155 is in clearance fit with the intermediate gear shaft 156, and the intermediate gear 155 can rotate relative to the intermediate gear shaft 156. The input gear 153 meshes with the intermediate gear 155. The intermediate gear 155 also meshes with the second gear 139. I.e. the input gearwheel 153 is connected with the second gearwheel 139 via an intermediate gearwheel 155. Thus, the rotation of the input gear 153 can rotate the second gear 139, thereby rotating the second partition 122.

The input gear 153, the intermediate gear 155, the first gear 137, and the second gear 139 each have external teeth. The intermediate gear 155 and the first gear 137 are respectively located on both sides of the input gear 153 in the radial direction of the input gear 153. The external teeth of the input gear 153 mesh with both the external teeth of the first gear 137 and the external teeth of the intermediate gear 155. Rotation of the input gear 153 causes rotation of the first gear 137 and the intermediate gear 155. The first gear 137 and the intermediate gear 155 rotate in the same direction, and the input gear 153 rotates in the opposite direction to both the first gear 137 and the intermediate gear 155.

The outer teeth of the intermediate gear 155 also mesh with the outer teeth of the second gear 139. The input gear 153 and the second gear 139 are respectively located on both sides of the intermediate gear 155 in the radial direction of the intermediate gear 155. The axial direction of the input gear 153 is parallel to the axial direction of the intermediate gear 155. The rotation direction of the intermediate gear 155 is opposite to the rotation direction of the second gear 139. The first gear 137 and the second gear 139 rotate in opposite directions so that the first barrier 121 and the second barrier 122 rotate in opposite directions so that the first barrier 121 can rotate between a first closed position and a first open position, the second barrier 122 can rotate between a second closed position and a second open position, and the first barrier 121 and the second barrier 122 in the closed position abut against each other and the first barrier 121 and the second barrier 122 in the open position are separated.

Further, in order to connect the first rotating assembly 133, the second rotating assembly 135 and the operating mechanism 150 with the tank body 110, the variable volume intake box 100 further includes a connecting plate 160, and the connecting plate 160 is connected to the adjusting mechanism 120 and the tank body 110. In this way, adjustment mechanism 120 may be coupled to housing 110 via coupling plate 160 such that first rotation assembly 133, second rotation assembly 135, and operating mechanism 150 are integrated for ease of installation. The coupling plate 160 may be coupled to an outer surface of the case 110, the case 110 may have a case coupling hole, and a portion of the adjustment mechanism 120 may extend through the case coupling hole and be coupled to the coupling plate 160.

The motor 157 may be disposed outside the case 110 to avoid affecting gas inside the case 110 and to facilitate maintenance. As shown in fig. 5, the coupling plate 160 has a coupling hole 161, and the input shaft 154 of the motor 157 can extend through the case coupling hole and the coupling hole 161 of the coupling plate 160. A portion of the input shaft 154 is located inside the case 110, and another portion is located outside the case 110. The input gear 153, the intermediate gear 155, the first gear 137, and the second gear 139 are all located inside the case 110, and the intermediate gear shaft 156, the first gear shaft 138, and the second gear shaft 140 are all located inside the case 110. In this way, a portion of the adjustment mechanism 120 is located inside the case 110, thereby adjusting the positions of the first and

second partitions

121 and 122.

Alternatively, the motor 157 is provided with a button that is pressed to drive the motor 157 to operate. The motor can drive the first partition plate and the second partition plate to move simultaneously, the response is fast, the control precision is high, the structure is a two-shaft two-plate movement mode, and the two plates are matched to realize sealing. Therefore, the appearance of the box body can be changed according to specific arrangement requirements, the placing position is changed, and the use is wide. The operating assembly further comprises an emergency handle 158, and the emergency handle 158 is connected with the input gear 153 to ensure that the first partition 121 and the second partition 122 can move when the power fails.

The invention also provides a power system comprising a marine engine 200 and the variable volume intake box 100 described above. The marine engine 200 may be a medium speed marine diesel engine. The rotating speed of the medium-speed marine diesel engine can be 600-1500 r min, and the single-cylinder power can be 195-255 KW. The variable volume intake box 100 can provide different intake states for the medium speed marine diesel engine according to different working conditions.

Further, as described above, the variable volume intake box 100 may be provided inside or outside the marine engine 200 according to the overall arrangement requirements of the marine diesel engine to accommodate various situations. The variable volume intake box 100 is provided inside the marine engine 200 to save space. Of course, the variable volume intake box 100 may also be provided outside the marine engine 200 to facilitate maintenance and reduce costs.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "part," "member," and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A variable volume intake box for a marine engine, comprising a box body and an adjustment mechanism, the adjustment mechanism being connected to the box body, the adjustment mechanism comprising a first partition and a second partition, the first partition and the second partition being located inside the box body,

2. The variable volume intake box of claim 1, wherein the first chamber has an inlet port and at least one outlet port, the inlet port and the outlet port having central axes that are perpendicular.

3. The variable volume intake box of claim 1, wherein the adjustment mechanism further comprises a first rotation mechanism coupled to the first partition to enable rotation of the first partition between the closed position and the open position, and a second rotation mechanism coupled to the second partition to enable rotation of the second partition between the closed position and the open position.

4. The variable volume intake box of claim 3, wherein the first rotation mechanism includes a first rotation assembly and a first shaft, the first baffle includes a first sleeve, the first shaft is coupled to the box and the first sleeve is sleeved on the first shaft, and the first rotation assembly is coupled to the first sleeve to rotate the first baffle relative to the first shaft.

5. The variable volume intake box of claim 4, wherein the second rotation mechanism includes a second rotation member and a second shaft, the second baffle includes a second sleeve, the second shaft is connected to the box and the second sleeve is sleeved on the second shaft, and the second rotation member is connected to the second sleeve to rotate the second baffle relative to the second shaft.

6. The variable volume intake box of claim 5, wherein the adjustment mechanism further comprises an operating mechanism including an input assembly and an intermediate rotating assembly, the input assembly being connected to the second rotating assembly through the intermediate rotating assembly, the input assembly also being connected to the first rotating assembly.

7. The variable volume intake box of claim 6, wherein the first rotating assembly includes a first gear, the second rotating assembly includes a second gear, the input assembly includes an input gear, the intermediate rotating assembly includes an intermediate gear, the input gear is in mesh with both the first gear and the intermediate gear, the intermediate gear is in mesh with the second gear, and the first gear rotates in an opposite direction than the second gear.

8. The variable volume intake box of claim 1, further comprising a connecting plate connected to the adjustment mechanism and the box body.

9. The variable volume intake box of claim 8, wherein the box body has a box body attachment aperture, the attachment plate is attached to an outer surface of the box body, and a portion of the adjustment mechanism extends through the box body attachment aperture and is attached to the attachment plate.

10. A power system comprising a marine engine and a variable volume inlet box according to any of claims 1-9, which is located inside or outside the marine engine and/or which is a medium speed marine diesel engine.