Anti-galloping hydraulic control mechanism of centrifugal machine

Abstract

The utility model provides an anti-galloping hydraulic control mechanism of a centrifugal machine, which relates to the technical field of centrifugal machines, aims to solve the galloping problem of a hydraulic control system of the centrifugal machine in the prior art, and comprises a hydraulic pump station module, a control module, a hydraulic motor module and a centrifugal machine module, the hydraulic pump station module is connected with the control module through a first high-pressure oil inlet pipe, the control module is connected with the hydraulic motor module through a second high-pressure oil inlet pipe, and the hydraulic motor module is in transmission connection with the centrifugal machine module. The anti-galloping hydraulic control mechanism for the centrifugal machine can control the pressure in a system when equipment is started, so that the centrifugal machine runs to a rated rotating speed at a relatively gentle accelerated speed, and the galloping phenomenon of the centrifugal machine is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a centrifuge anti-runaway hydraulic control mechanism. Background Art

[0002] Centrifuges are widely used in the chemical, petroleum, food, pharmaceutical, mineral processing, coal, water treatment, and shipbuilding industries. Currently, hydraulic control systems are widely used in centrifuges. The fully hydraulically driven horizontal spiral unloading decanter centrifuge (hereafter referred to as the fully hydraulically driven centrifuge) for oil and gas exploration and development combines hydraulic and mechanical elements to optimize the structure of conventional horizontal spiral unloading decanter centrifuges, improving overall centrifuge performance and adapting to various demanding drilling operations on site.

[0003] For traditional centrifuge hydraulic control systems, when the equipment is turned on, the centrifuge is in an unloaded state and the system pressure is too high, which will cause the centrifuge to overspeed. When the centrifuge overspeeds too much due to inertia, the speed will drop below the rated speed. After several minutes of repeated acceleration and deceleration, the centrifuge will stabilize to the rated speed. This overspeed phenomenon can easily cause the centrifuge to vibrate violently, causing damage to components, shortening its service life, and poor safety. Utility Model Content

[0004] The purpose of the utility model is to provide a centrifuge anti-runaway hydraulic control mechanism to solve the runaway problem of the centrifuge hydraulic control system in the prior art. The centrifuge anti-runaway hydraulic control mechanism of the utility model can control the pressure in the system when the equipment is started, so that the centrifuge runs to the rated speed with a relatively gentle acceleration, thereby avoiding the runaway phenomenon of the centrifuge.

[0005] The utility model provides a centrifuge anti-runaway hydraulic control mechanism, which includes a hydraulic pump station module, a control module module, a hydraulic motor module and a centrifuge module. The hydraulic pump station module is connected to the control module module through a first high-pressure oil inlet pipe, the control module module is connected to the hydraulic motor module through a second high-pressure oil inlet pipe, and the hydraulic motor module is connected to the centrifuge module in a transmission connection.

[0006] As a preferred solution of the present invention, it also includes a first low-pressure return pipe and a second low-pressure return pipe, one end of the first low-pressure return pipe is connected to the hydraulic pump station module and the other end is connected to the control module module, one end of the second low-pressure return pipe is connected to the hydraulic motor module and the other end is connected to the control module module or the first low-pressure return pipe.

[0007] As a preferred solution of the present invention, the control module module includes a connecting block, a pressure regulating valve, a throttle valve and a first pressure gauge, and an inlet channel, an outlet channel and a pressure reducing channel are provided in the connecting block. The pressure regulating valve is connected between the inlet channel and the pressure reducing channel, the throttle valve is connected between the inlet channel and the outlet channel, and the first pressure gauge is connected to the end of the inlet channel.

[0008] As a preferred solution of the present invention, the control module assembly further includes a safety valve, and the safety valve is connected between the inlet channel and the pressure reducing channel.

[0009] As a preferred solution of the present invention, the hydraulic motor module and the centrifuge module are connected through a belt transmission assembly, and the belt transmission assembly includes a first pulley, a second pulley and a transmission belt, the first pulley is connected to the power output end of the hydraulic motor module, the second pulley is connected to the centrifuge module, and the transmission belt is sleeved on the first pulley and the second pulley and rotates with the first pulley and the second pulley.

[0010] As a preferred solution of the present invention, the first pulley is provided with a plurality of first wheel grooves arranged along its circumference, the second pulley is provided with a plurality of second wheel grooves arranged along its circumference, and the plurality of conveyor belts are provided, and the plurality of conveyor belts are arranged in parallel on the first wheel grooves and the second wheel grooves.

[0011] As a preferred solution of the present invention, an overflow valve, a second pressure gauge and a filter are provided on one end of the first high-pressure oil inlet pipe close to the hydraulic pump station module. The overflow valve is provided close to the hydraulic pump station module, and the second pressure gauge is provided between the overflow valve and the filter.

[0012] As a preferred solution of the present invention, an oil-water separator is provided on one end of the first low-pressure return pipe close to the hydraulic pump station module, and both ends of the oil-water separator are respectively connected to the hydraulic pump station module and the overflow valve.

[0013] Compared with the prior art, the present invention has the following positive effects:

[0014] The hydraulic control mechanism for preventing a centrifuge from running away provided by the present invention includes a hydraulic pump station module, a control module module, a hydraulic motor module and a centrifuge module. The hydraulic pump station module is connected to the control module module via a first high-pressure oil inlet pipe, the control module module is connected to the hydraulic motor module via a second high-pressure oil inlet pipeline, and the hydraulic motor module is connected to the centrifuge module by transmission. When the hydraulic control mechanism for preventing a centrifuge from running away in the present invention is working, the high-pressure oil provided by the hydraulic pump station module enters the control module module via the first high-pressure oil inlet pipe, the control module module passes the processed high-pressure oil through the second high-pressure oil inlet pipeline into the hydraulic motor module through its own control logic, and then drives the motor to rotate, and the hydraulic motor module drives the centrifuge module to rotate. Among them, the control module module can control the pressure in the system when the equipment is turned on, so that the centrifuge runs to the rated speed with a relatively gentle acceleration, thereby avoiding the centrifuge from running away. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of the centrifuge anti-runaway hydraulic control mechanism from a first perspective of the present utility model;

[0017] Figure 2 This is a structural diagram of the centrifuge anti-runaway hydraulic control mechanism from a second perspective of the present invention;

[0018] Figure 3 This is a front view of the centrifuge anti-runaway hydraulic control mechanism of the present utility model;

[0019] Figure 4 for Figure 3 Cross-sectional view of middle AA;

[0020] Figure 5 for Figure 3 Cross-section of the BB.

[0021] In the figure: 1. Hydraulic pump station module; 2. Control module module; 21. Connecting block; 211. Inlet channel; 212. Pressure reducing channel; 213. Outlet channel; 22. Safety valve; 23. Pressure regulating valve; 24. Throttle valve; 25. First pressure gauge; 3. Hydraulic motor module; 4. Centrifuge module; 5. Belt transmission assembly; 51. First pulley; 511. First wheel groove; 52. Second pulley; 521. Second wheel groove; 53. Transmission belt; 61. First high-pressure oil inlet pipe; 62. Second high-pressure oil inlet pipe; 63. First low-pressure return pipe; 64. Second low-pressure return pipe; 7. Oil-water separator; 8. Filter; 9. Second pressure gauge; 10. Overflow valve. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," "outer," "front end," "back end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be construed as limiting the present invention. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0024] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Example 1:

[0026] This embodiment provides a centrifuge anti-runaway hydraulic control mechanism, such as Figure 1-Figure 5 As shown, it includes a hydraulic pump station module 1, a control module assembly 2, a hydraulic motor module 3 and a centrifuge module 4.

[0027] The hydraulic pump station module 1 is connected to the control module module 2 through a first high-pressure oil inlet pipe 61 , the control module module 2 is connected to the hydraulic motor module 3 through a second high-pressure oil inlet pipe 62 , and the hydraulic motor module 3 is transmission-connected to the centrifuge module 4 .

[0028] When the centrifuge anti-runaway hydraulic control mechanism of this embodiment is in operation, high-pressure oil provided by the hydraulic pump station module 1 enters the control module 2 through the first high-pressure oil inlet pipe 61. The control module 2, using its own control logic, then directs the processed high-pressure oil through the second high-pressure oil inlet pipe 62 to the hydraulic motor module 3, thereby driving the motor to rotate. The hydraulic motor module 3 then drives the centrifuge module 4. The control module 2 controls the pressure within the system when the equipment is turned on, allowing the centrifuge to run to the rated speed at a relatively gentle acceleration, thus preventing the centrifuge from running away.

[0029] As a preferred embodiment, the centrifuge anti-runaway hydraulic control mechanism of this embodiment further includes a first low-pressure return pipe 63 and a second low-pressure return pipe 64. The pressures in the first low-pressure return pipe 63 and the second low-pressure return pipe 64 are relatively low, and are used to provide pressure relief and reflux.

[0030] like Figure 1 and Figure 2 As shown, one end of the first low-pressure return pipe 63 is connected to the hydraulic pump station module 1 and the other end is connected to the control module module 2, and one end of the second low-pressure return pipe 64 is connected to the hydraulic motor module 3 and the other end is connected to the control module module 2 or the first low-pressure return pipe 63. Figure 1 As shown, the second low-pressure return pipe 64 is connected to the first low-pressure return pipe 63 to achieve the return of hydraulic oil through the first low-pressure return pipe 63 .

[0031] As a preferred embodiment, the control module assembly 2 includes a connection block 21, a pressure regulating valve 23, a throttle valve 24 and a first pressure gauge 25. Figure 4 and Figure 5 As shown, an inlet channel 211, an outlet channel 213, and a pressure reducing channel 212 are provided in the connection block 21. The pressure regulating valve 23 is connected between the inlet channel 211 and the pressure reducing channel 212. The throttle valve 24 is connected between the inlet channel 211 and the outlet channel 213. A first pressure gauge 25 is connected to the end of the inlet channel 211. The pressure regulating valve 23, the throttle valve 24, and the pressure gauge are respectively connected to the inlet channel 211 via branches. Specifically, the pressure reducing channel 212 is connected to the first low-pressure return pipe 63, the inlet channel 211 is connected to the first high-pressure oil inlet pipe 61, and the outlet channel 213 is connected to the second high-pressure oil inlet pipe 62.

[0032] In this embodiment, a first pressure gauge 25 monitors the system pressure in real time. A throttle valve 24 regulates the flow of hydraulic oil entering the hydraulic motor module 3, thereby controlling the motor speed. A pressure regulating valve 23 controls the maximum pressure of the hydraulic oil entering the hydraulic motor during the initial phase. By adding a pressure regulating valve 23 to a conventional centrifuge hydraulic control system, the centrifuge can be controlled.

[0033] This control system adds a pressure regulating valve 23, which diverts part of the system pressure to the pressure reducing channel 212 when the equipment is turned on, so that the centrifuge runs to the rated speed at a relatively gentle acceleration, effectively avoiding the centrifuge's runaway phenomenon.

[0034] As a preferred embodiment, the control module assembly 2 further includes a safety valve 22, which is connected between the inlet channel 211 and the pressure reducing channel 212. The safety valve 22 is used to control the maximum pressure of the system to ensure safe operation of the system.

[0035] As a preferred embodiment, the hydraulic motor module 3 is connected to the centrifuge module 4 via a belt transmission assembly 5. Figure 2 As shown, the belt transmission assembly 5 includes a first pulley 51, a second pulley 52, and a transmission belt 53. The diameter of the first pulley 51 is larger than that of the second pulley 52 to increase the transmission ratio and thus the operating speed of the centrifuge module 4. The first pulley 51 is connected to the power output of the hydraulic motor module 3, while the second pulley 52 is connected to the centrifuge module 4. The transmission belt 53 is sleeved over the first and second pulleys 51, 52 and rotates with them.

[0036] The hydraulic motor module 3 in this embodiment is connected to the centrifuge module 4 via the belt transmission assembly 5, thereby driving the operation of the centrifuge module 4, and the operation stability is good.

[0037] As a preferred embodiment, the first pulley 51 is provided with a plurality of first grooves 511 extending along its circumference, and the second pulley 52 is provided with a plurality of second grooves 521 extending along its circumference. A plurality of conveyor belts 53 are provided, and the plurality of conveyor belts 53 are arranged in parallel on the first grooves 511 and the second grooves 521.

[0038] In this embodiment, multiple conveyor belts 53 are arranged for parallel transmission, thereby further improving the transmission stability. The multiple conveyor belts 53 are limited by the first wheel groove 511 and the second wheel groove 521 respectively, so that the multiple conveyor belts 53 avoid mutual interference during rotation.

[0039] As a preferred embodiment, a relief valve 10, a second pressure gauge 9, and a filter 8 are installed on the end of the first high-pressure oil inlet pipe 61 near the hydraulic pump station module 1. The relief valve 10 is located near the hydraulic pump station module 1, and the second pressure gauge 9 is located between the relief valve 10 and the filter 8. The filter 8 is used to filter impurities from the hydraulic oil flowing out of the hydraulic motor module 3. The relief valve 10 ensures constant system pressure. When the system pressure increases, resulting in a decrease in flow demand, the relief valve opens, allowing excess flow to overflow back into the tank. The second pressure gauge 9 displays the pressure between the relief valve 10 and the filter 8, indicating whether the filter 8 is clogged.

[0040] As a preferred embodiment, an oil-water separator 7 is installed on one end of the first low-pressure return pipe 63 near the hydraulic pump station module 1. The two ends of the oil-water separator 7 are respectively connected to the hydraulic pump station module 1 and the relief valve 10. The oil-water separator 7 is used to separate the oil and water in the returning hydraulic oil to ensure the quality of the returning hydraulic oil.

[0041] The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can make several modifications and improvements without departing from the creative concept of the present invention, which should be included in the scope of protection of the present invention.

Claims

1. A centrifuge anti-runaway hydraulic control mechanism, characterized in that: The invention comprises a hydraulic pump station module (1), a control module module (2), a hydraulic motor module (3) and a centrifuge module (4); the hydraulic pump station module (1) is connected to the control module module (2) via a first high-pressure oil inlet pipe (61); the control module module (2) is connected to the hydraulic motor module (3) via a second high-pressure oil inlet pipe (62); and the hydraulic motor module (3) is connected to the centrifuge module (4) in a transmission manner.

2. A centrifuge anti-runaway hydraulic control mechanism according to claim 1, characterized in that: It also includes a first low-pressure return pipe (63) and a second low-pressure return pipe (64), one end of the first low-pressure return pipe (63) is connected to the hydraulic pump station module (1) and the other end is connected to the control module module (2), and one end of the second low-pressure return pipe (64) is connected to the hydraulic motor module (3) and the other end is connected to the control module module (2) or the first low-pressure return pipe (63).

3. The centrifuge anti-runaway hydraulic control mechanism according to claim 1, characterized in that: The control module assembly (2) comprises a connecting block (21), a pressure regulating valve (23), a throttle valve (24) and a first pressure gauge (25); an inlet channel (211), an outlet channel (213) and a pressure reducing channel (212) are provided in the connecting block (21); the pressure regulating valve (23) is connected between the inlet channel (211) and the pressure reducing channel (212); the throttle valve (24) is connected between the inlet channel (211) and the outlet channel (213); and the first pressure gauge (25) is connected to the end of the inlet channel (211).

4. A centrifuge anti-runaway hydraulic control mechanism according to claim 3, characterized in that: The control module assembly (2) further includes a safety valve (22), and the safety valve (22) is connected between the inlet channel (211) and the pressure reducing channel (212).

5. The centrifuge anti-runaway hydraulic control mechanism according to claim 1, characterized in that: The hydraulic motor module (3) and the centrifuge module (4) are connected to each other through a belt transmission assembly (5). The belt transmission assembly (5) includes a first pulley (51), a second pulley (52) and a transmission belt (53). The first pulley (51) is connected to the power output end of the hydraulic motor module (3), and the second pulley (52) is connected to the centrifuge module (4). The transmission belt (53) is sleeved on the first pulley (51) and the second pulley (52) and rotates with the first pulley (51) and the second pulley (52).

6. A centrifuge anti-runaway hydraulic control mechanism according to claim 5, characterized in that: The first pulley (51) is provided with a plurality of first wheel grooves (511) arranged along its circumference, the second pulley (52) is provided with a plurality of second wheel grooves (521) arranged along its circumference, and the transmission belt (53) is provided with a plurality of the plurality of transmission belts (53), which are arranged in parallel on the first wheel grooves (511) and the second wheel grooves (521).

7. The centrifuge anti-runaway hydraulic control mechanism according to claim 2, characterized in that: An overflow valve (10), a second pressure gauge (9) and a filter (8) are provided on one end of the first high-pressure oil inlet pipe (61) close to the hydraulic pump station module (1); the overflow valve (10) is provided close to the hydraulic pump station module (1); and the second pressure gauge (9) is provided between the overflow valve (10) and the filter (8).

8. The centrifuge anti-runaway hydraulic control mechanism according to claim 7, characterized in that: An oil-water separator (7) is provided on one end of the first low-pressure return pipe (63) close to the hydraulic pump station module (1), and both ends of the oil-water separator (7) are respectively connected to the hydraulic pump station module (1) and the overflow valve (10).

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