Quick-response water medium retarder spoiler column

Abstract

The utility model discloses a quick response's water medium retarder turbulence column belongs to heavy load traffic transportation engineering technical field, and this turbulence column sets up in the stator impeller of water medium retarder, and turbulence column subassembly includes the stroke cylinder, the spring is fixed in the stroke cylinder, the spring one end is based on the stroke rod and is connected turbulence column top block outside the stroke cylinder, and turbulence column top block top end face sets up as the curved surface, and the stator impeller of turbulence column subassembly side is provided with the guide pressure channel. Through the turbulence end face of turbulence column subassembly top adopts the curved surface design, and the stroke rod is designed as the square, and the guide groove in the top cover is designed as the square structure, can realize to the braking flow field without any damage, to the air flow field, but also can disturb the effect of damage simultaneously, can effectively prevent the turbulence column end face rotation, and further guarantee the turbulence stability of turbulence column end face, more through setting up guide pressure channel and increase the structure of double pressure action mode, have the advantage that the turbulence column response speed is fast.

Description

Technical Field

[0001] This utility model relates to the field of heavy-duty transportation engineering technology, specifically to a fast-response water medium retarder turbulence column. Background Technology

[0002] A water-medium retarder is an energy conversion device that works by converting mechanical energy into the thermal and pressure energy of the coolant based on the fluid vortex loss effect between the stator and rotor impellers. The water-medium retarder operates in three states: non-retardation braking, retardation braking activation, and retardation braking unloading.

[0003] In non-retarding braking operation, the air vortex field formed by the air inside the working chamber under the drive of the rotor impeller will generate idling losses. Idling losses not only create unnecessary resistance for vehicles in normal driving, but also reduce the economic efficiency of the water-based retarder.

[0004] To address the issue of idling loss, existing technologies employ aerodynamic pillars embedded within the braking chamber to suppress ineffective energy loss caused by air vortices. However, the design of existing aerodynamic components still suffers from the following technical shortcomings:

[0005] 1. Flow field interference problem;

[0006] In the slow braking operation, although the baffle of the traditional fixed baffle can be completely pressed down by the coolant medium, the top of the column and the edge of the mounting hole will still disrupt the braking vortex field and cause a decrease in braking torque.

[0007] 2. Dynamic response lag;

[0008] The spring-damping system of the baffle column exhibits a response delay characteristic: At the instant the water-medium retarder enters the retarding braking activation state, the coolant medium in the braking vortex field begins to impact the baffle plate. When the flow field impact force on the baffle plate exceeds the initial holding compression force of the spring, the baffle plate begins to be compressed. As more coolant medium enters the working chambers of the stator and rotor impellers, the intensity of the braking vortex field continuously increases until the flow field impact force on the baffle plate is sufficient to overcome the spring's ultimate compression force and completely compress the baffle plate. This process, from the initial compression of the baffle plate until its complete compression, results in a response delay characteristic in the spring-damping system of the baffle column. This not only affects the loading speed of the braking torque but also causes torque output instability due to flow field intensity fluctuations during continuous braking. Utility Model Content

[0009] To address the technical problems mentioned in the background section, this application proposes a fast-response water medium retarder turbulence column. The technical solution adopted by this utility model is as follows:

[0010] A fast-response water medium retarder turbulence column is disposed in the stator impeller of the water medium retarder. The turbulence column assembly includes a stroke cylinder, in which a spring is fixedly disposed. One end of the spring is connected to a turbulence column top block outside the stroke cylinder based on a stroke rod. The top end face of the turbulence column top block is set as a curved surface. A pressure guiding channel is provided in the stator impeller next to the turbulence column assembly.

[0011] Furthermore, the end face of the top of the turbulence column is set as a curved surface that conforms to the geometric relationship of the flow field cavity of the stator impeller.

[0012] Furthermore, the plunger at the bottom of the stroke rod is fixedly connected to one end of the spring, and the other end of the stroke rod is fixedly connected to the bottom of the top block of the turbulence column.

[0013] Furthermore, the working chamber of the stator impeller is connected to the upper space of the bottom plunger of the stroke rod inside the stroke cylinder via the pressure guiding channel.

[0014] Furthermore, the spoiler assembly also includes a spoiler base, the spoiler base is fixedly installed at the bottom of the stroke cylinder, and the spoiler base is fixedly connected to the end of the spring away from the top block of the spoiler.

[0015] Furthermore, the spoiler column assembly also includes a top cover, which is fixedly installed on the top of the stroke cylinder, and the spring is disposed inside the stroke cylinder between the spoiler column base and the top cover.

[0016] Furthermore, the travel rod is square, and the top cover has a square hole that matches the travel rod, through which the travel rod passes.

[0017] This utility model provides a fast-response water medium retarder turbulence column, which has at least one of the following beneficial effects:

[0018] 1. By adopting a curved surface design for the top of the turbulence column assembly, and designing the stroke rod as a square, and designing the guide groove inside the top cover as a square structure, it can achieve the effect of not damaging the braking flow field, but disturbing and disrupting the air flow field, while also effectively preventing the rotation of the turbulence column end face, thereby ensuring the turbulence stability of the turbulence column end face. Furthermore, by setting a pressure guiding channel to increase the structure of dual pressure action mode, it has the advantage of fast response speed of the turbulence column. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a fast-response water medium retarder turbulence column according to the present invention;

[0020] Figure 2This is a schematic cross-sectional view of the turbulence column assembly in the pop-up state in an embodiment of the present utility model.

[0021] Figure 3 This is a schematic cross-sectional view of the turbulence column assembly under extreme compression in an embodiment of the present invention.

[0022] Figure 4 A three-dimensional structural schematic diagram of the water medium retarder provided in the embodiment of this utility model;

[0023] Figure 5 A cross-sectional structural schematic diagram of the water medium retarder provided in this embodiment of the utility model;

[0024] Figure 6 A first structural schematic diagram of the stator impeller provided in an embodiment of this utility model;

[0025] Figure 7 This is a schematic diagram of the second structure of the stator impeller provided in an embodiment of the present utility model;

[0026] Figure 8 This is a first structural schematic diagram of the rotor impeller provided in an embodiment of the present utility model;

[0027] Figure 9 This is a schematic diagram of the second structure of the rotor impeller provided in an embodiment of the present utility model.

[0028] The components include: 1. Drive shaft; 2. Stator impeller; 3. Rotor impeller; 4. Turbulence column assembly; 201. Spacer blades; 202. Stator impeller liquid inlet groove; 203. Liquid inlet; 204. Stator impeller exhaust hole; 205. Mounting groove; 206. Residual liquid discharge port; 301. Vortex blades; 302. Liquid outlet hole; 303. Curved blades; 304. Flange fastening threaded hole; 305. Connecting hole; 401. Stroke cylinder; 402. Turbulence column base; 403. Spring; 404. Top cover; 405. Stroke rod; 406. Turbulence column top block; 407. Pressure guiding channel. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] like Figure 1-3As shown, this utility model discloses a fast-response water medium retarder turbulence column, which is disposed in the stator impeller 2 of the water medium retarder. The turbulence column assembly 4 includes a stroke cylinder 401, in which a spring 403 is fixedly disposed. One end of the spring 403 is connected to the turbulence column top block 406 outside the stroke cylinder 401 based on a stroke rod 405. The top end face of the turbulence column top block 406 is set as a curved surface. A pressure guiding channel 407 is provided in the stator impeller 2 next to the turbulence column assembly 4.

[0031] In this embodiment, a working cavity is formed between the stator impeller 2 and the rotor impeller 3. In the non-retarded braking working state, the sum of the flow field impact force exerted by the air vortex field in the working cavity on the end face of the turbulence column top block 406 and the high-pressure airflow pressure received by the stroke rod 405 based on the pressure guiding channel 407 is less than the initial holding compression force of the spring 403. At this time, the turbulence column assembly 4 is in the popped-up state, and the spring 403 pops up the turbulence column top block 406, so that the top of the turbulence column top block 406 extends beyond the inner cavity surface of the stator impeller 2 and into the working cavity. This causes the air vortex field in the working cavity to be disturbed and destroyed by the turbulence column top block 406, thereby reducing the idling loss of the rotor impeller 3.

[0032] When the slow braking operation is activated, the flow field impact force exerted by the coolant vortex field on the top of the turbulence column in the working chamber and the pressure of the high-pressure flow field on the stroke rod 405 based on the pressure guide channel 407 exceed the initial holding compression force of the spring 403. At this time, the turbulence column assembly 4 begins to compress. As the intensity of the braking vortex field continues to increase, the spring will eventually reach the limit compression state, that is, the top block 406 of the turbulence column will completely retract into the stator impeller 2. At this time, the turbulence column assembly 4 will not cause disturbance or damage to the braking flow field, thus solving the problem that the protruding top part of the traditional turbulence column still damages the braking flow field and reduces the braking torque.

[0033] By connecting the flow field within the working chamber with the flow field within the front cavity of the stroke rod 405, the top block 406 of the turbulence column and the upper piston surface of the stroke rod 405 are impacted by the high-pressure liquid within the working chamber. Under the same flow field pressure, compared to a traditional turbulence column, this increases the downward pressure on the upper piston surface of the stroke rod 405, thus generating a greater downward pressure on the stroke rod 405. While ensuring that the top block 406 of the turbulence column does not shift in the idling flow field, it allows the top block 405 of the turbulence column to be completely pressed down in a shorter time during the braking activation process, shortening the braking response time of the water-medium retarder and thus making the braking torque response speed of the water-medium retarder faster.

[0034] In one embodiment, the top end face of the turbulence column top block 406 is configured as a curved surface that conforms to the geometric relationship of the flow field cavity of the stator impeller 2.

[0035] In this embodiment, when the turbulence column assembly 4 is in a state of extreme compression, the top curved surface of the turbulence column top block 406 smoothly connects with the flow field inner cavity surface of the stator impeller 2, thereby avoiding the problem of disturbance and damage to the braking flow field caused by the turbulence column assembly 4 itself and its installation position edge.

[0036] In one embodiment, the plunger at the bottom of the stroke rod 405 is fixedly connected to one end of the spring 403, and the other end of the stroke rod 405 is fixedly connected to the bottom of the turbulence column top block 406.

[0037] In this embodiment, the plunger of the stroke rod 405 isolates and seals the space at both ends of the stroke rod 405, and the plunger of the stroke rod 405 can slide and translate inside the stroke cylinder 401 under the action of the spring 403 and other external forces.

[0038] In one embodiment, the working chamber of the stator impeller 2 is connected to the upper space of the bottom plunger of the stroke rod 405 inside the stroke cylinder 401 via the pressure guiding channel 407.

[0039] In this embodiment, based on the pressure guiding channel 407, the coolant medium pressure in the working chamber also acts on the upper end of the bottom plunger of the stroke rod 405. Therefore, when in the slow braking activation flow field state, the high-pressure fluid pressure in the working chamber acts on the upper end of the bottom plunger of the stroke rod 405, thereby compressing the stroke rod 405 to move towards the spring 403.

[0040] In one embodiment, the spoiler assembly 4 further includes a spoiler base 402, the spoiler base 402 is fixedly installed at the bottom of the stroke cylinder 401, and the spoiler base 402 is fixedly connected to one end of the spring 403 away from the spoiler top block 406.

[0041] In this embodiment, the spoiler base 402 is used to provide support force to the spring 403, ensuring that the spring 403 has the required elasticity.

[0042] In one embodiment, the spoiler column assembly 4 further includes a top cover 404, which is fixedly installed on the top of the stroke cylinder 401, and the spring 403 is disposed in the stroke cylinder 401 between the spoiler column base 402 and the top cover 404.

[0043] In this embodiment, the top cover 404 is used to limit the stroke rod 405, ensuring that the stroke rod 405 moves only in the axial direction of the stroke cylinder 401.

[0044] In one embodiment, the travel rod 405 is square, and the top cover 404 is provided with a square hole that matches the travel rod 405, through which the travel rod 405 passes.

[0045] In this embodiment, the square hole has a limiting effect on the stroke rod 405, preventing the top block 406 of the turbulence column assembly 4 from not being able to fully retract into the stator impeller 2 due to the rotation of the stroke rod 405, thereby causing disturbance and damage to the braking flow field.

[0046] This embodiment of a fast-response water medium retarder turbulence column has various specific application embodiments, including but not limited to:

[0047] like Figure 4-9 As shown, in one embodiment, a water medium retarder includes a drive shaft 1 connected in series with an engine crankshaft, a rotor impeller 3 fixedly sleeved on the outer side of the drive shaft 1, and a stator impeller 2 rotatably sleeved on the outer side of the drive shaft 1 next to the rotor impeller 3; a turbulence column assembly 4 is installed in the stator impeller 2.

[0048] The rotor impeller 3 includes vortex blades 301, liquid outlet holes 302, and curved blades 303. The rotor impeller 3 is provided with a plurality of vortex blades 301 on the inner side near the stator impeller 2. The rotor impeller 3 is provided with a plurality of liquid outlet holes 302 near the shaft center end between the vortex blades 301. The rotor impeller 3 is provided with a plurality of curved blades 303 between the liquid outlet holes 302 on the outer side of the rotor impeller 3.

[0049] The stator impeller 2 includes spacer blades 201, a stator impeller inlet groove 202, an inlet 203, and a mounting groove 205. The stator impeller 2 has a plurality of spacer blades 201 arranged on its inner side near the rotor impeller 3. The stator impeller inlet groove 202 is arranged on the outer end face of the stator impeller 2. The stator impeller inlet groove 202 is provided with a plurality of inlets 203, and the inlets 203 penetrate the stator impeller 2 and the spacer blades 201. The stator impeller 2 has a plurality of mounting grooves 205 arranged on its side. A turbulence column assembly 4 is fixedly installed in the mounting groove 205.

[0050] In this embodiment, the rotor impeller 3 and the stator impeller 2 are assembled to form a working chamber. When the water-medium retarder enters the retarding braking working state, the coolant, as the medium, is transported from the vehicle's cooling system to the stator impeller inlet groove 202 of the stator impeller 2. Under continuous pressure, the coolant enters the working chamber through the inlet 203 in the stator impeller inlet groove 202. Driven by the drive shaft 1 connected in series with the engine crankshaft, the rotor impeller 3 rotates synchronously. Driven by the rotor impeller 3, the coolant undergoes vortex loss pressurization motion in the working chamber, converting the mechanical energy of the rotor impeller 3 into the heat energy and pressure energy of the coolant, thereby reducing the speed of the drive shaft 1. This achieves the purpose of slowing down the flow. At the same time, the top of the turbulence column assembly 4 in the working chamber is compressed into the mounting groove 205 under the action of the flow field impact force and the high-pressure flow field pressure of the stroke rod 405 based on the pressure guiding channel 407. The curved surface of the top of the turbulence column assembly 4 is smoothly connected to the working chamber, thereby avoiding the influence of the turbulence column assembly 4 on the vortex loss pressurization motion of the coolant in the working chamber. After the coolant undergoes vortex loss pressurization motion in the working chamber, the coolant is thrown out to the outside of the rotor impeller 3 along the evenly distributed outlet holes 302, and undergoes centrifugal motion under the rotation of the curved blades 303. After the next step of collection and return, it finally flows back completely to the vehicle cooling system for heat dissipation and cooling. The curved surface design at the top of the turbulence column assembly 4 in this embodiment achieves the effect of not disrupting the braking flow field in the slow braking working state, while disturbing and disrupting the air flow field in the non-slow braking working state. This improves the intensity of vortex loss boosting motion in the slow braking working state, and also achieves the effect of the turbulence column assembly 4 disturbing and disrupting the air flow field when the retarder is in the non-slow braking working state, thereby reducing idling loss.

[0051] In the above embodiment, the stator impeller 2 further includes a stator impeller vent hole 204 and a residual liquid discharge port 206. The stator impeller vent hole 204 is provided on the outer end face of the stator impeller 2, and the stator impeller vent hole 204 penetrates the stator impeller 2 and the spacer blade 201. A plurality of residual liquid discharge ports 206 are provided in the stator impeller inlet groove 202 near the stator impeller vent hole 204, and the residual liquid discharge ports 206 penetrate the stator impeller 2.

[0052] In this embodiment, the stator impeller vent 204 is used to expel air from the working chamber when coolant is delivered to the working chamber, increasing the coolant capacity while preventing air from affecting the intensity of the coolant vortex erosion and pressurization motion. The residual liquid discharge port 206 is used to collect the residual coolant in the stator impeller 2 during slow braking and unloading. When the coolant is delivered to the working chamber, most of the coolant enters the working chamber through the inlet 203 in the stator impeller inlet groove 202, while a small amount of coolant enters the working chamber through the residual liquid discharge port 206 via the stator impeller inlet groove 202.

[0053] In the above embodiment, the rotor impeller 3 further includes a flange fastening threaded hole 304 and a connecting hole 305. The rotor impeller 3 is provided with a plurality of flange fastening threaded holes 304 and a plurality of connecting holes 305 in an array near the shaft center end.

[0054] In this embodiment, the flange fastening threaded hole 304 is used to fix the rotor impeller 3 and the drive shaft 1 with the flange, thereby realizing the synchronous rotation of the rotor impeller 3 driven by the drive shaft 1. As the curved blades 303 on the outside of the rotor impeller 3 rotate, the coolant moves radially from the center of the rotor impeller 3 to the outer periphery under the action of inertial centrifugal force, thereby forming a low-pressure area in the area of ​​the curved blades 303 near the central axis. This low-pressure area is directly connected to the front end of the rotor lip seal on the side of the rotor impeller 3. The connecting hole 305 is used to connect the front end of the stator lip seal on the side of the stator impeller 2 with the low-pressure area, thereby reducing the sealing pressure of the lip seals on both sides of the water medium retarder (rotor impeller 3 side and stator impeller 2 side).

[0055] The present invention and its embodiments have been described above. This description is not restrictive. The accompanying drawings are only one embodiment of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A quick response water medium retarder spoiler column, which is arranged in a stator impeller (2) of a water medium retarder, characterized in that: The turbulence column assembly (4) includes a stroke cylinder (401), a spring (403) is fixedly installed inside the stroke cylinder (401), one end of the spring (403) is connected to the turbulence column top block (406) outside the stroke cylinder (401) based on the stroke rod (405), and the top end face of the turbulence column top block (406) is set as a curved surface; a pressure guiding channel (407) is provided in the stator impeller (2) next to the turbulence column assembly (4).

2. The fast-response water medium retarder turbulence column according to claim 1, characterized in that: The top end face of the turbulence column top block (406) is set as a curved surface that is consistent with the geometric relationship of the flow field cavity of the stator impeller (2).

3. The fast-response water medium retarder turbulence column according to claim 1, characterized in that: The plunger at the bottom of the stroke rod (405) is fixedly connected to one end of the spring (403), and the other end of the stroke rod (405) is fixedly connected to the bottom of the top block (406) of the turbulence column.

4. The fast-response water medium retarder turbulence column according to claim 3, characterized in that: The working chamber of the stator impeller (2) is connected to the upper space of the bottom plunger of the stroke rod (405) inside the stroke cylinder (401) via the pressure guiding channel (407).

5. The fast-response water medium retarder turbulence column according to claim 2, characterized in that: The spoiler assembly (4) also includes a spoiler base (402), the spoiler base (402) is fixedly installed at the bottom of the stroke cylinder (401), and the spoiler base (402) is fixedly connected to one end of the spring (403) away from the spoiler top block (406).

6. The fast-response water medium retarder turbulence column according to claim 5, characterized in that: The spoiler column assembly (4) also includes a top cover (404), which is fixedly installed on the top of the stroke cylinder (401), and the spring (403) is disposed in the stroke cylinder (401) between the spoiler column base (402) and the top cover (404).

7. The fast-response water medium retarder turbulence column according to claim 6, characterized in that: The stroke rod (405) is square, and the top cover (404) is provided with a square hole that matches the stroke rod (405). The stroke rod (405) passes through the top cover (404) based on the square hole.

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