Hydraulic control valve and hydraulic operating mechanism

Abstract

The application relates to a hydraulic control valve and a hydraulic operating mechanism. The hydraulic control valve comprises an outer valve shell, a valve sleeve assembly, a valve core and a paddle, the outer valve shell is provided with a valve cavity; the valve sleeve assembly is arranged in the valve cavity and comprises a left valve sleeve and a right valve sleeve, the left valve sleeve and the right valve sleeve are respectively provided with a left moving cavity and a right moving cavity, the right valve sleeve is further provided with a first connecting cavity in communication with the right moving cavity, and the first connecting cavity is used for inputting high-pressure oil; the valve core is slidably assembled in the valve sleeve assembly, and two ends of the valve core are arranged in the left moving cavity and the right moving cavity respectively; the paddle is arranged at one end of the valve core and located in the right moving cavity, the paddle is rotated and moved towards the left moving cavity under the action force of the high-pressure oil input from the first connecting cavity, so that the paddle drives the valve core to move to a closing position on a sliding stroke. That is, the application adds rotary motion on the basis of linear motion to overcome the static friction force caused by the sealing ring on the valve core in a combined form, so as to improve the stability of the closing action of the operating mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage switchgear, in particular to a hydraulic control valve and a hydraulic operating mechanism. BACKGROUND

[0002] The hydraulic operating mechanism is widely used in power grid systems with a voltage level of 252kV and above. In the hydraulic operating mechanism, the hydraulic control valve is not only the core component of the hydraulic operating mechanism, but also the most delicate part of the hydraulic operating mechanism. The hydraulic control valve functions to receive a closing command and complete a hydraulic system state switching.

[0003] The current hydraulic control valve is a two-position three-way spool valve structure. For example, a hydraulic operating mechanism, a control valve, and a main valve of the control valve are disclosed in Chinese Patent No. 201810565783.6. In the closing operation of the above-mentioned patent, the valve rod reciprocally slides in the valve sleeve, and the different oil chambers are sealed by the valve port and the sliding sealing ring. The sealing ring is made of rubber material, and the static friction force of the sealing ring after static state is significantly greater than the sliding friction force, which greatly affects the stability of the closing action of the hydraulic operating mechanism.

[0004] To solve the above-mentioned problem, the current method is to use the area difference between different regions of the valve rod to generate a pushing force to forcibly overcome the static friction force. However, the effect of the above-mentioned method is not obvious, and the stability of the closing action of the hydraulic operating mechanism still needs to be improved. SUMMARY

[0005] Therefore, it is necessary to provide a hydraulic control valve and a hydraulic operating mechanism to solve the problem of poor stability of the closing action of the current operating mechanism.

[0006] A hydraulic control valve, comprising an outer valve housing, a valve sleeve assembly, a valve core, and a paddle, wherein:

[0007] The outer valve housing has a valve cavity;

[0008] The valve sleeve assembly is arranged in the valve cavity and comprises a left valve sleeve and a right valve sleeve. The left valve sleeve and the right valve sleeve are respectively provided with a left moving cavity and a right moving cavity. The right valve sleeve is further provided with a first connecting cavity in communication with the right moving cavity, and the first connecting cavity is used for inputting constant high-pressure oil.

[0009] The valve core is slidably and sealingly arranged in the valve sleeve assembly, and two ends of the valve core are arranged in the left moving cavity and the right moving cavity, respectively.

[0010] The paddle is arranged at one end of the spool, and the paddle is located in the right moving cavity. The paddle is rotated and moved towards the left moving cavity by the force of the high-pressure oil input from the first connecting cavity, so that the paddle drives the spool to move to the closed position on the sliding stroke.

[0011] In one of the embodiments, the outer valve shell is further provided with a second connecting cavity in communication with the first connecting cavity, and a tripping pilot valve is arranged on the second connecting cavity. The tripping pilot valve is used for pressure relief. The left moving cavity is used for inputting the high-pressure oil. After the pressure relief of the tripping pilot valve, the high-pressure oil acts on the spool, so that the spool moves towards the right moving cavity to the tripping position on the sliding stroke.

[0012] In one of the embodiments, the paddle comprises a connecting shaft and a rotating shaft sleeved outside the connecting shaft. The connecting shaft is connected with the spool. The rotating shaft is provided with a plurality of spaced rotating grooves. Adjacent two rotating grooves form a rotating blade.

[0013] In one of the embodiments, the rotating shaft has a first end face close to the spool and a second end face away from the spool. The first end face extends towards the second end face in a first direction.

[0014] The rotating groove is opened on the outer wall of the rotating shaft and extends to the second end face in the first direction. In the first direction, the opening depth of the rotating groove gradually deepens.

[0015] In one of the embodiments, the rotating groove has an opening line with a length direction extending along the circumference of the rotating shaft. One end of the opening line has an arc segment extending to the second end face. The arc segment and the groove wall in the corresponding rotating groove form a guide surface.

[0016] In one of the embodiments, the groove wall of the rotating groove further has an abutment surface arranged at a preset angle with the guide surface.

[0017] In one of the embodiments, at the tripping position, the first connecting cavity is arranged opposite to the paddle.

[0018] In one of the embodiments, the hydraulic control valve further comprises a control module, a detection module and an alarm in communication connection with the control module. The detection module is arranged in the outer valve shell and is used for detecting the measured oil pressure information in the second connecting cavity. The control module controls the start of the alarm according to the measured oil pressure information.

[0019] The hydraulic control valve is connected to one end of the valve core through the paddle, the paddle is rotated and moved towards the left moving cavity under the action of the high-pressure oil input from the first connecting cavity, so that the paddle drives the valve core to move to the closed position on the sliding stroke. That is, the application adds rotary motion on the basis of linear motion to overcome the static friction of the sealing ring on the valve core in a composite form, so that the action of the valve core when switching state is more stable, and the stability of the closing action of the hydraulic operating mechanism is improved.

[0020] The application also provides a monitoring method of a hydraulic control valve, comprising the following steps:

[0021] The hydraulic control valve provided in the above embodiment is provided.

[0022] The detection module detects the measured oil pressure information in the second connecting cavity and transmits the measured oil pressure information to the control module.

[0023] The control module draws a measured oil pressure fluctuation curve according to the measured oil pressure information, generates a control signal according to the measured oil pressure fluctuation curve and a preset reference fluctuation curve, and transmits the control signal to the alarm.

[0024] The alarm is started according to the received control signal.

[0025] The application also provides a hydraulic operating mechanism, which comprises the hydraulic control valve according to any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structural schematic diagram of a hydraulic control valve provided by the application is shown.

[0027] Figure 2 A schematic diagram of an installation structure of a valve core and a paddle provided by the application is shown.

[0028] Figure 3 A structural schematic diagram of a paddle provided by the application is shown.

[0029] Figure 4 A structural schematic diagram of a paddle provided by the application is shown. Figure 3 A structural schematic diagram of a paddle provided by the application is shown.

[0030] Figure 5 A schematic diagram of another installation structure of a valve core and a paddle provided by the application is shown.

[0031] Wherein:

[0032] 10, hydraulic control valve; a, first direction; 100, outer valve shell; 110, valve cavity; 120, T cavity; 130, P cavity; 140, Z cavity; 150, second connecting cavity;

[0033] 200, valve sleeve assembly; 210, left valve sleeve; 211, left moving cavity; 2111, A cavity; 2112, B cavity; 212, closing position valve port; 220, right valve sleeve; 221, right moving cavity; 2211, C cavity; 2212, D cavity; 222, opening position valve port; 223, first connecting cavity; 230, connecting pipeline;

[0034] 300, valve core; 310, first end; 320, second end; 330, valve shaft; 340, sealing ring;

[0035] 400, paddle; 410, connecting shaft; 420, rotating shaft; 421, rotating groove; 4211, opening line; 4212, arc segment; 4213, guide surface; 4214, receiving surface; 422, rotating blade; 423, first end surface; 424, second end surface;

[0036] 500, detection module; 600, control module. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by skilled persons in the art without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0040] In the present application, unless specifically defined otherwise, if there are terms such as "mount", "connect", "connect", "fix", and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless specifically defined otherwise, if there are similar descriptions such as "first feature on" or "second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] It should be noted that if an element is referred to as "fixed to" or "disposed to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only embodiment.

[0043] Referring to Figure 1 and Figure 2 shown, Figure 1 The structure of the hydraulic control valve 10 in an embodiment of the present application is shown. Figure 2An installation structure of the valve core 300 and the paddle 400 in an embodiment of the present application is shown. The hydraulic control valve 10 provided by the embodiment of the present application comprises an outer valve housing 100, a valve sleeve assembly 200, a valve core 300 and a paddle 400, wherein the outer valve housing 100 has a valve cavity 110, and in a specific arrangement, the outer valve housing 100 is provided with a T cavity 120, a P cavity 130 and a Z cavity 140 which are in communication with the valve cavity 110, the Z cavity 140 is located between the T cavity 120 and the P cavity 130, and the Z cavity 140 is used for connecting a rodless cavity of a hydraulic cylinder, the Z cavity 140 is a control oil cavity of the entire mechanism, the T cavity 120 is used for connecting a system oil tank and is a low-pressure oil passage, that is, the T cavity 120 can deliver low-pressure oil, and the P cavity 130 is used for connecting an accumulator and is a constant high-pressure oil passage, that is, the P cavity 130 can deliver constant high-pressure oil.

[0044] The valve sleeve assembly 200 is arranged in the valve cavity 110, and the valve sleeve assembly 200 comprises a left valve sleeve 210 and a right valve sleeve 220, and the left valve sleeve 210 and the right valve sleeve 220 are respectively provided with a left moving cavity 211 and a right moving cavity 221, and in a specific arrangement, the right end of the left valve sleeve 210 is provided with a closing position valve port 212, and the left end of the right valve sleeve 220 is provided with an opening position valve port 222. The valve core 300 is slidably and sealingly arranged in the valve sleeve assembly 200, and the two ends of the valve core 300 are arranged in the left moving cavity 211 and the right moving cavity 221, respectively, and in a specific arrangement, the two ends of the valve core 300 are a first end 310 and a second end 320, respectively, and the first end 310 and the second end 320 are arranged in the left moving cavity 211 and the right moving cavity 221, respectively, and the first end 310 and the second end 320 are both provided with a sealing ring 340. The middle section of the valve core 300 is provided with a valve shaft 330 with a radial dimension greater than that of the two ends, and the outer circumferential surfaces of the two ends of the large-diameter section valve shaft 330 are conical surfaces which are used for sealingly cooperating with the closing position valve port 212 and the opening position valve port 222 in a linear sealing manner.

[0045] It should be noted that the valve core 300 has a closing position and an opening position in the process of closing and opening, and in the closing position, one end surface of the valve shaft 330 of the valve core 300 is in sealing contact with the closing position valve port 212, at this time, the T cavity 120 is disconnected from the Z cavity 140, and the P cavity 130 is in communication with the Z cavity 140 through the opening position valve port 222; in the opening position, the other end surface of the valve shaft 330 of the valve core 300 is in sealing contact with the opening position valve port 222, at this time, the P cavity 130 is disconnected from the Z cavity 140, and the T cavity 120 is in communication with the Z cavity 140 through the closing position valve port 212.

[0046] The right valve sleeve 220 is also provided with a first connecting cavity 223 in communication with the right moving cavity 221, the first connecting cavity 223 is used for inputting the high-pressure oil, the paddle 400 is arranged at one end of the valve core 300, and the paddle 400 is located in the right moving cavity 221, the paddle 400 is rotated and moved towards the left moving cavity 211 under the action of the high-pressure oil input by the first connecting cavity 223, so as to drive the paddle 400 to move to the closed position on the sliding stroke. It should be noted that the structure of the paddle 400 has a rifling effect, but avoids the problem of damaging the sliding seal caused by adding rifling in the valve cavity 110.

[0047] The hydraulic control valve 10 is connected to one end of the valve core 300 by arranging the paddle 400, the paddle 400 is rotated and moved towards the left moving cavity 211 under the action of the high-pressure oil input by the first connecting cavity 223, so as to drive the paddle 400 to move to the closed position on the sliding stroke. That is, the present application adds rotary motion on the basis of linear motion to overcome the static friction force of the sealing ring 340 on the valve core 300 in a composite form, so that the action of the valve core 300 when switching state is more stable, and the stability of the closing action of the operating mechanism is improved.

[0048] It should be noted that the arrangement of the paddle 400 also helps to improve the stability of the opening process, in the present application, the outer valve housing 100 is also provided with a second connecting cavity 150 in communication with the first connecting cavity 223, the second connecting cavity 150 is provided with an opening pilot valve, the opening pilot valve is used for pressure relief, the left moving cavity 211 is used for inputting the high-pressure oil, and the high-pressure oil acts on the valve core 300 after the pressure relief of the opening pilot valve, so as to move the valve core 300 to the opening position on the sliding stroke. Through the above arrangement, the high-pressure oil in the left moving cavity 211 pushes the valve core 300 to move to the right to the opening position, and the arrangement of the paddle 400 helps the gas and residual liquid in the right moving cavity 221 to be discharged from the first connecting cavity 223 more quickly, so that the movement of the valve core 300 is more smooth, thereby improving the stability of the opening process. In the specific arrangement, the second connecting cavity 150 is also provided with a closing pilot valve, the closing pilot valve is used for inputting the high-pressure oil, and the high-pressure oil flows into the second connecting cavity 150 through the closing pilot valve and then flows to the first connecting cavity 223, thereby providing power for the closing movement of the valve core 300.

[0049] In order to enable the closing pilot valve to conveniently provide normal high-pressure oil so as to subsequently push the valve core 300 to move left, in the specific setting, the second end 320 in the valve core 300 divides the right moving chamber 221 into a C chamber 2211 and a D chamber 2212, wherein the C chamber 2211 is connected to the first connecting chamber 223, and the closing pilot valve is connected to the P chamber 130. The normal high-pressure oil in the P chamber 130 flows into the second connecting chamber 150 through the closing pilot valve, then flows through the first connecting chamber 223 and then flows to the C chamber 2211. The normal high-pressure oil in the C chamber 2211 acts on the second end 320 in the valve core 300 to realize the left movement of the valve core 300.

[0050] In order to more conveniently realize the delivery of normal high-pressure oil in the left moving chamber 211 to push the valve core 300 to move right, in the specific setting, the D chamber 2212 is connected with the P chamber 130, and the normal high-pressure oil in the P chamber 130 flows into the D chamber 2212. The first end 310 in the valve core 300 divides the left moving chamber 211 into the A chamber 2111 and the B chamber 2112. The A chamber 2111 is connected with the D chamber 2212 through the connecting pipe 230, and the normal high-pressure oil in the D chamber 2212 flows into the A chamber 2111 through the connecting pipe 230, and the B chamber 2112 is connected with the T chamber 120. The B chamber 2112 contains the low-pressure oil in the T chamber 120, which is beneficial for the normal high-pressure oil in the A chamber 2111 to push the valve core 300 to move right. With this arrangement, when opening is required, the normal high-pressure oil in chamber C 2211 is first discharged through the opening pilot valve into chamber T 120 via the first connecting chamber 223 and the second connecting chamber 150. The normal high-pressure oil in chamber A 2111 then pushes the valve core 300 rightward, achieving the opening operation. In a specific configuration, the shape of connecting pipeline 230 is preferably, but not limited to, a U-shape; it can be any other geometric shape.

[0051] It should be noted that during closing, the normally high-pressure oil in chamber C 2211 can also be drawn from chamber A 2111 via the closing pilot valve, i.e., the closing pilot valve is connected to chamber A 2111. With this arrangement, when closing is required, the closing pilot valve is first activated, and the normally high-pressure oil in chamber A 2111 is replenished to chamber C 2211, causing the pressure in chamber A 2111 to drop. This accelerates the speed at which the normally high-pressure oil in chamber C 2211 pushes the valve core 300 to move left, thereby accelerating the start of closing.

[0052] Combine Figure 3 and Figure 4 As shown, Figure 3 This is a structural diagram of a blade 400 provided in one embodiment of the present application. Figure 4 for Figure 3Structure schematic diagram of middle paddle 400 from another perspective. In order to design the paddle 400 more conveniently, one preferred embodiment of the paddle 400 comprises a connecting shaft 410 and a rotating shaft 420 sleeved outside the connecting shaft 410, the connecting shaft 410 is connected with the spool 300, the rotating shaft 420 is provided with a plurality of spaced rotating grooves 421, and a rotating blade 422 is formed between adjacent two rotating grooves 421. In the specific arrangement, the connecting shaft 410 is connected with the second end portion 320 in the spool 300, and specifically, the second end portion 320 is provided with a mounting hole for fixing the connecting shaft 410, and the side of the rotating shaft 420 away from the second end portion 320 is provided with a plurality of rotating grooves 421, and the specific number of the rotating grooves 421 can be 2, 3, 5 or more.

[0053] In order to receive more high-pressure oil to quickly realize rotation, specifically, the rotating shaft 420 has a first end face 423 close to the spool 300 and a second end face 424 away from the spool 300, the direction in which the first end face 423 extends towards the second end face 424 is a first direction a, the rotating grooves 421 are opened on the outer wall of the rotating shaft 420 and extend to the second end face 424 along the first direction a, and along the first direction a, the opening depth of the rotating grooves 421 gradually deepens. In the specific arrangement, the rotating grooves 421 have an opening line 4211 extending along the circumferential direction of the rotating shaft 420, one end of the opening line 4211 has an arc segment 4212 extending to the second end face 424, and the arc segment 4212 and the groove wall in the corresponding rotating groove 421 form a guide surface 4213. Through the above arrangement, the guide surface 4213 can be regarded as the oil receiving surface of the blade, and the arc segment 4212 is more suitable for the entry of high-pressure oil, thereby exerting force on the blade to drive the blade to rotate.

[0054] Further, the groove wall of the rotating groove 421 also has a receiving surface 4214 arranged at a preset angle with the guide surface 4213. In the specific arrangement, the receiving surface 4214 is preferably in a fan-shaped structure. Through the above arrangement, part of the high-pressure oil entering from the guide surface 4213 will flow to the receiving surface 4214, and the rotation of the blade is driven by the pressure on the receiving surface 4214.

[0055] In order to strengthen the rotation of the paddle 400, specifically, the first connecting cavity 223 is arranged opposite to the paddle 400 at the disconnecting position. In the specific arrangement, in order to further increase the fluid impact effect at the closing starting time, the cavity flow passages of the first connecting cavity 223 and the second connecting cavity 150 are consistent in shape, and the cavity flow passages of the two can adopt inclined holes to match the extension direction of the guide surface 4213 in the paddle 400, thereby increasing the rotation effect of the paddle 400.

[0056] It should be noted that the paddle 400 is preferably arranged on the second end 320 of the valve core 300, and in addition, it can also be arranged on the valve shaft 330 in the valve core 300. For details, please refer to Figure 5 Another schematic diagram of the installation structure of the valve core 300 and the paddle 400 is shown. It should be emphasized that the arrangement position of the paddle 400 is not limited to the above two places, and any position that can realize the rotation of the paddle 400 to drive the valve core 300.

[0057] In order to obtain the running state of the hydraulic control valve 10 in time and to handle abnormal situations in time, specifically, the hydraulic control valve 10 further comprises a control module 600, a detection module 500 and an alarm connected in communication with the control module 600, the detection module 500 is arranged on the outer valve housing 100 and is used to detect the measured oil pressure information in the second connecting cavity 150, and the control module 600 controls the start of the alarm according to the measured oil pressure information. It should be noted that by detecting the oil pressure in the second connecting cavity 150, the oil pressure fluctuation in the C cavity 2211 can be indirectly obtained, so as to judge whether the hydraulic control valve 10 is in the closed or open state. The judged state is compared with the state that the hydraulic control valve 10 should be in at this time, if they are not consistent, the control module 600 controls the alarm to alarm. In the specific arrangement, the detection module 500 can be an oil pressure sensor, in addition, the detection module 500 can also be a flow sensor and other sensors that can reflect the change of liquid. The control module 600 is a PLC controller.

[0058] The application also provides a monitoring method of the hydraulic control valve 10, comprising the following steps:

[0059] Step S1, providing the hydraulic control valve 10 described in the above embodiment; Step S2, the detection module 500 detects the measured oil pressure information in the second connecting cavity 150, and the detection module 500 transmits the measured oil pressure information to the control module 600; Step S3, the control module 600 draws a measured oil pressure fluctuation curve according to the measured oil pressure information, and generates a control signal according to the measured oil pressure fluctuation curve and a preset reference fluctuation curve, and the control module 600 transmits the control signal to the alarm. In the specific arrangement, the measured oil pressure fluctuation curve is formed by the time on the X axis and the measured oil pressure information on the Y axis, and the preset reference fluctuation curve is the reference oil pressure information corresponding to the closing and opening time period in the normal state. If the deviation between the measured oil pressure information and the reference oil pressure information at the same time is large, there is a fault that the valve core 300 does not move to the position or leakage occurs, and the control module 600 generates a control signal at this time; Step S4, the alarm starts according to the received control signal.

[0060] The application also provides a hydraulic operating mechanism, which comprises the hydraulic control valve 10 according to any one of the above embodiments.

[0061] The hydraulic operating mechanism, by setting the paddle 400 connected to one end of the valve core 300 in the hydraulic control valve 10, the paddle 400 is rotated and moved towards the left moving chamber 211 by the force of the high-pressure oil input by the first connecting chamber 223, so that the paddle 400 drives the valve core 300 to move to the closed position on the sliding stroke. That is, the present application adds rotary motion on the basis of linear motion to overcome the static friction of the sealing ring 340 on the valve core 300 in a composite form, so that the action of the valve core 300 when switching is more stable, and the stability of the closing action of the hydraulic operating mechanism is improved.

[0062] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0063] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent protection of the present application should be subject to the appended claims.

Claims

1. A hydraulic control valve characterized by comprising: The hydraulic control valve comprises an outer valve shell, a valve sleeve assembly, a valve core and a paddle, wherein: The outer valve shell has a valve cavity; The valve sleeve assembly is arranged in the valve cavity and comprises a left valve sleeve and a right valve sleeve, the left valve sleeve and the right valve sleeve are respectively provided with a left moving cavity and a right moving cavity, the right valve sleeve is further provided with a first connecting cavity in communication with the right moving cavity, and the first connecting cavity is used for inputting high-pressure oil; The valve core is slidably and sealingly arranged in the valve sleeve assembly, and the two ends of the valve core are arranged in the left moving cavity and the right moving cavity respectively; The paddle is arranged at one end of the valve core, and the paddle is located in the right moving cavity, the paddle is rotated and moved towards the left moving cavity under the action of the high-pressure oil input by the first connecting cavity, so that the paddle drives the valve core to move to the closed position on the sliding stroke.

2. The hydraulic control valve according to claim 1, characterized in that, The outer valve shell is further provided with a second connecting cavity in communication with the first connecting cavity, the second connecting cavity is provided with a tripping pilot valve, the tripping pilot valve is used for pressure relief, the left moving cavity is used for inputting the high-pressure oil, and the high-pressure oil acts on the valve core after the pressure relief of the tripping pilot valve, so that the valve core moves to the tripping position on the sliding stroke towards the right moving cavity.

3. The hydraulic control valve according to claim 1, wherein The paddle comprises a connecting shaft and a rotating shaft sleeved outside the connecting shaft, the connecting shaft is connected with the valve core, and the rotating shaft is provided with a plurality of spaced rotating grooves, and a rotating blade is formed between adjacent two rotating grooves.

4. The hydraulic control valve according to claim 3, characterized in that The rotating shaft has a first end face close to the valve core and a second end face away from the valve core, and the first end face extends towards the second end face in a first direction; The rotating groove is opened on the outer wall of the rotating shaft and extends to the second end face in the first direction, and in the first direction, the opening depth of the rotating groove gradually deepens.

5. The hydraulic control valve according to claim 4, wherein The rotating groove has an opening line extending along the circumferential direction of the rotating shaft, one end of the opening line has an arc segment extending to the second end face, and the arc segment and the groove wall in the corresponding rotating groove form a guide surface.

6. The hydraulic control valve according to claim 5, wherein The groove wall of the rotating groove is further provided with an abutment surface at a preset angle with the guide surface.

7. The hydraulic control valve of claim 2, wherein In the tripping position, the first connecting cavity and the paddle are arranged opposite to each other.

8. The hydraulic control valve of claim 2, wherein, The hydraulic control valve further comprises a control module, a detection module and an alarm connected with the control module in communication, the detection module is arranged in the outer valve shell and is used for detecting the measured oil pressure information in the second connecting cavity, and the control module controls the start of the alarm according to the measured oil pressure information.

9. A hydraulic operating mechanism characterized by comprising: The hydraulic operating mechanism comprises the hydraulic control valve according to any one of claims 1 to 8.

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