Hydraulic control device for main distributing valve of large hydraulic turbine governor

Abstract

The utility model discloses a large hydraulic turbine governor main distributing valve hydraulic control device which comprises a pipeline arranged in a main distributing valve hydraulic control cabinet, a filter screen box is fixedly connected to one end of the side face of the pipeline, an oil inlet is formed in one end of the side face of the pipeline, and an oil pump is arranged at one end of the side face of the pipeline. A copper filter element is arranged at one end of the side surface of the pipeline; an oil outlet is formed in one end of the side surface of the pipeline; according to the hydraulic oil filtering device, through repeated filtering and the filtering net box device, the problems that the cleanliness of hydraulic oil is difficult to guarantee due to one-time filtering of a common filtering device, and normal use of equipment is affected are solved; the device can be detached, so that large-particle impurities collected in the device can be timely removed, and the problem that the filtered large-particle impurities are accumulated in the device and are difficult to clean is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbine equipment, in particular to a hydraulic control device for a main pressure regulating valve of a large water turbine governor. Background Art

[0002] Because the existing integrated mechanical hydraulic control device of the main pressure regulating valve of the turbine speed governor generally has difficulty in ensuring the cleanliness of the hydraulic oil, affecting the normal use of the equipment, and the general hydraulic oil filtering device usually only performs filtering once, resulting in incomplete filtration and failing to meet the use needs, and the large particles of impurities after filtration accumulate inside the device and are difficult to clean, making it very troublesome to use, so further improvement is needed. Utility Model Content

[0003] The purpose of the utility model is to provide a hydraulic control device for a main pressure regulating valve of a large turbine governor in order to solve the problems raised by the above-mentioned background technology, which has the advantages of solving the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic control device for a main pressure regulating valve of a large turbine speed regulator, comprising: a pipeline arranged inside a hydraulic control cabinet of the main pressure regulating valve, a filter box being fixedly connected to one end of the side surface of the pipeline, an oil inlet being arranged at one end of the side surface of the pipeline, an oil pump being arranged at one end of the side surface of the pipeline, a copper filter element being arranged at one end of the side surface of the pipeline, and an oil outlet being arranged at one end of the side surface of the pipeline.

[0005] As a further solution of the present invention: the filter box includes a box body, a dust box is arranged at one end inside the box body, a motor is fixedly connected to the top of the box body, a connecting rod is fixedly connected to the bottom of the motor, a bevel gear is fixedly connected to the bottom of the connecting rod, one end of the side surface of the bevel gear is transmission connected to the second bevel gear, one end of the side surface of the second bevel gear is fixedly connected to a fixing rod, one end of the side surface of the fixing rod is fixedly connected to a brush, one end of the side surface of the fixing rod is fixedly connected to a second brush, one end of the inside of the box body is fixedly connected to a magnetic filter, one end of the inside of the box body is fixedly connected to a first filter, and one end of the inside of the pipe is fixedly connected to a second filter.

[0006] As a further solution of the utility model: the dust box includes a dust hopper, one end of the side of the dust hopper is fixedly connected to a baffle, and the side of the baffle is fixedly connected to a sealing strip.

[0007] As a further solution of the utility model: the output end of the motor passes through the box body and is connected to the lower connecting rod.

[0008] As a further solution of the present invention: the fixing rod passes through the first filter screen and the second filter screen to limit the fixing rod.

[0009] As a further solution of the present invention: the brush is in contact with the surface of the first filter screen, and the second brush is in contact with the second filter screen, so that the brush and the second brush can brush the surface of the first filter screen and the second filter screen.

[0010] As a further solution of the utility model: the box body is adapted to the dust collecting box, and the sealing strip can prevent leakage of hydraulic oil.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model solves the problem that the cleanliness of the hydraulic oil cannot be guaranteed due to one-time filtration by a general filtering device, thus affecting the normal use of the equipment, by using multiple filtrations and a filter box device. A dust collecting box is arranged inside the filter box device, which can be disassembled to facilitate timely removal of large particle impurities collected inside the device, thus solving the problem that large particle impurities after filtration are accumulated inside the device and are difficult to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the filtering mechanism in the utility model;

[0015] Figure 3 It is a schematic diagram of the structure inside the filter box mechanism of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure inside the filter box mechanism from the second viewing angle in the utility model.

[0017] Figure 5 It is a structural schematic diagram of the dust collecting box mechanism in the utility model.

[0018] In the figure: 1. pipeline; 2. filter box; 21. box body; 22. dust box; 221. dust hopper; 222. baffle; 223. sealing strip; 23. motor; 24. connecting rod; 25. bevel gear; 26 second bevel gear; 27. fixing rod; 28. brush; 29. ​​second brush; 210. magnetic filter; 211. first filter; 212. second filter; 3. oil inlet; 4. oil pump; 5. copper filter element; 6. oil outlet; 7. main pressure distribution valve hydraulic control cabinet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following is an explanation of the embodiments of the present utility model based on the overall structure of the present utility model.

[0021] Reference Figures 1 to 4 In an embodiment of the utility model, a hydraulic control device for a main pressure regulating valve of a large turbine governor includes: a pipeline 1 arranged inside a main pressure regulating valve hydraulic control cabinet 7, a filter box 2 is fixedly connected to one end of the side of the pipeline 1, an oil inlet 3 is arranged at one end of the side of the pipeline 1, an oil pump 4 is arranged at one end of the side of the pipeline 1, a copper filter element 5 is arranged at one end of the side of the pipeline 1, and an oil outlet 6 is arranged at one end of the side of the pipeline 1.

[0022] Adopt the above scheme: first connect the oil inlet 3 to the hydraulic oil outlet that needs to be filtered, then turn on the oil pump 4, the hydraulic oil flows into the filter box 2 through the pipeline 1 for filtration, then enters the copper filter element 5 through the oil pump 4 for filtration again, and finally is discharged from the oil outlet 6.

[0023] The filter box 2 includes a box body 21, a dust box 22 is arranged at one end inside the box body 21, a motor 23 is fixedly connected to the top of the box body 21, a connecting rod 24 is fixedly connected to the bottom of the motor 23, a bevel gear 25 is fixedly connected to the bottom of the connecting rod 24, one end of the side of the bevel gear 25 is transmission connected to the second bevel gear 26, one end of the side of the second bevel gear 26 is fixedly connected to a fixing rod 27, one end of the side of the fixing rod 27 is fixedly connected to a brush 28, one end of the side of the fixing rod 27 is fixedly connected to a second brush 29, one end of the side of the fixing rod 27 is fixedly connected to a magnetic filter 210, one end of the box body 21 is fixedly connected to a first filter 211, and one end of the inside of the pipe 1 is fixedly connected to a second filter 212.

[0024] The above scheme is adopted: first, preliminary filtration is performed through the magnetic filter 210 to absorb metal debris mixed in the hydraulic oil, and then secondary filtration is performed through the first filter 211 to block some large particles of impurities, and finally the third filtration is performed through the second filter 212 to block some finer impurities. The upper motor 23 drives the bevel gear 25 to rotate through the connecting rod 24, thereby transmitting the second bevel gear 26, and then drives the brush 28 and the second brush 29 to rotate through the fixed rod 27. The brush 28 and the second brush 29 are attached to the surface of the first filter 211 and the second filter 212, and the dust adsorbed on the surface after filtration is cleaned by rotation.

[0025] The dust box 22 includes a dust hopper 221 , a baffle 222 is fixedly connected to one end of the side of the dust hopper 221 , and a sealing strip 223 is fixedly connected to the side of the baffle 222 .

[0026] With the above solution, the cleaned dust falls into the dust box 22 below, which is sealed by the baffle 222 and the sealing strip 223 , and the dust box 22 is limited by the friction of the sealing strip 223 .

[0027] The output end of the motor 23 passes through the box body 21 and is connected to the lower connecting rod 24 .

[0028] The fixing rod 27 passes through the first filter screen 211 and the second filter screen 212 to limit the fixing rod 27 .

[0029] The brush 28 fits the surface of the first filter screen 211 , and the second brush 29 fits the second filter screen 212 , so that the brush 28 and the second brush 29 can brush the surfaces of the first filter screen 211 and the second filter screen 212 .

[0030] The box body 21 is matched with the dust box 22, and the sealing strip 223 can prevent the hydraulic oil from leaking.

[0031] By adopting the above solution, the adapted sealing strip 223 can make the device have better sealing performance and prevent the hydraulic oil from leaking.

[0032] The working principle of the utility model is as follows: first, the oil inlet 3 is connected to the hydraulic oil outlet that needs to be filtered, and then the oil pump 4 is turned on, and the hydraulic oil flows into the filter box 2 through the pipeline 1, and first passes through the magnetic filter 210 for preliminary filtration to adsorb the metal debris mixed in the hydraulic oil, and then passes through the first filter 211 for secondary filtration, some large particles of impurities are blocked, and finally passes through the second filter 212 for the third filtration to block some finer impurities, and the upper motor 23 drives the bevel gear 25 to rotate through the connecting rod 24, thereby transmitting the second bevel gear 212 to drive ... shaped gear 26, and then drives the brush 28 and the second brush 29 to rotate through the fixing rod 27. The brush 28 and the second brush 29 are attached to the surface of the first filter screen 211 and the second filter screen 212, and the dust adsorbed on the surface after filtering is cleaned by rotation, so that the dust falls into the dust box 22 below. The dust box 22 is sealed by the baffle 222 and the sealing strip 223, and the dust box 22 is limited by the friction of the sealing strip 223. The filtered hydraulic oil enters the copper filter element 5 through the oil pump 4 for the fourth filtration, and is finally discharged from the oil outlet 6.

[0033] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic control device for a main pressure regulating valve of a large turbine speed governor, a pipeline (1) arranged inside a main pressure regulating valve hydraulic control cabinet (7), characterized in that: include: A filter box (2) is fixedly connected to one end of the side of the pipeline (1), an oil inlet (3) is provided at one end of the side of the pipeline (1), an oil pump (4) is provided at one end of the side of the pipeline (1), a copper filter element (5) is provided at one end of the side of the pipeline (1), an oil outlet (6) is provided at one end of the side of the pipeline (1), the filter box (2) comprises a box body (21), a dust collecting box (22) is provided at one end of the inside of the box body (21), a motor (23) is fixedly connected to the top of the box body (21), a connecting rod (24) is fixedly connected to the bottom of the motor (23), and the connecting rod (24) ) is fixedly connected to the bottom of the housing (21); one end of the side of the bevel gear (25) is transmission-connected to the second bevel gear (26); one end of the side of the second bevel gear (26) is fixedly connected to a fixing rod (27); one end of the side of the fixing rod (27) is fixedly connected to a brush (28); one end of the side of the fixing rod (27) is fixedly connected to a second brush (29); one end of the interior of the housing (21) is fixedly connected to a magnetic filter (210); one end of the interior of the housing (21) is fixedly connected to a first filter (211); and one end of the interior of the pipe (1) is fixedly connected to a second filter (212).

2. A hydraulic control device for a main pressure regulating valve of a large turbine governor according to claim 1, characterized in that: The dust collecting box (22) comprises a dust collecting hopper (221), one end of the side of the dust collecting hopper (221) is fixedly connected to a baffle (222), and the side of the baffle (222) is fixedly connected to a sealing strip (223).

3. A hydraulic control device for a main pressure regulating valve of a large turbine governor according to claim 1, characterized in that: The output end of the motor (23) passes through the box (21) and is connected to a lower connecting rod (24).

4. A hydraulic control device for a main pressure regulating valve of a large turbine governor according to claim 1, characterized in that: The fixing rod (27) passes through the first filter screen (211) and the second filter screen (212) to limit the position of the fixing rod (27).

5. A hydraulic control device for a main pressure regulating valve of a large-scale water turbine governor according to claim 1, characterized in that: The brush (28) is in contact with the surface of the first filter screen (211), and the second brush (29) is in contact with the second filter screen (212).

6. A hydraulic control device for a main pressure regulating valve of a large turbine governor according to claim 1, characterized in that: The box body (21) is compatible with the dust collecting box (22).

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