Hydraulic lubrication integrated system and wind power generation equipment

Abstract

The utility model relates to a hydraulic lubrication integrated system and wind power generation equipment. The device mainly comprises a hydraulic pump, a grease injector, a first electric control switching valve and a second electric control switching valve, the grease injector comprises a valve body and a plunger assembled in the valve body in a sliding and sealing mode, the plunger comprises a large-diameter section and a small-diameter section, a power cavity and a grease pumping cavity are formed in the valve body corresponding to the large-diameter section and the small-diameter section respectively, and the large-diameter section divides the power cavity into a left power cavity and a right power cavity; the valve body is provided with a grease suction port and a grease discharge port which are communicated with the grease pumping cavity, the grease suction port is used for being communicated with a lubricating grease storage container, the grease discharge port is used for being communicated with a lubricating pipeline, the second electric control switching valve comprises four oil ports, and the four oil ports are communicated with the hydraulic pump, the oil tank, the left power cavity and the right power cavity respectively. The second electric control switching valve is provided with a first working position enabling the hydraulic pump to be communicated with the left power cavity and enabling the right power cavity to be communicated with the oil tank. And the second working position enables the hydraulic pump to be communicated with the right power cavity and the left power cavity to be communicated with the oil tank.

Description

Technical Field

[0001] The utility model relates to a hydraulic lubrication integrated system and wind power generation equipment. Background Art

[0002] Wind turbines require a hydraulic system for yaw braking of the main bearings and a lubrication system for friction pair lubrication. However, the transmission medium used by the hydraulic system is hydraulic oil (thin oil), and the lubrication medium used by the lubrication system is grease (thick oil). The media are completely different. Traditionally, the two systems are generally separated and run independently. The lubrication system requires an electric pump or a hydraulic pump in conjunction with a transmission mechanism, a plunger pair, etc., which makes the two systems not only occupy a large volume and high cost, but also seriously waste energy.

[0003] There are also integrated hydraulic lubrication systems on the market, but their oilers use a reset spring structure, such as the patent with authorization announcement number CN 220204219 U. The reset spring structure disclosed in this patent uses a reset spring for reset. The spring is prone to aging and failure after long-term use, resulting in incomplete reset or complete failure, which affects the normal use of the greaser. Moreover, the greaser cannot be pressurized and is limited by the pressure of the hydraulic system. In some scenarios, it cannot meet the high-pressure lubrication requirements. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic lubrication integrated system to solve the technical problems of the existing system that the return spring is easily damaged and cannot be pressurized; the purpose of the utility model is also to provide a wind power generation equipment equipped with the above hydraulic lubrication integrated system.

[0005] The technical scheme of the hydraulic lubrication integrated system of the utility model is as follows: The hydraulic lubrication integrated system includes:

[0006] A hydraulic pump, used to draw hydraulic oil from a tank storing the hydraulic oil;

[0007] The grease injector comprises a valve body and a plunger which is assembled in the valve body with a sliding seal, the plunger comprises a large diameter section and a small diameter section, a power chamber and a grease pump chamber are respectively arranged in the valve body corresponding to the large diameter section and the small diameter section, and the large diameter section divides the power chamber into a left power chamber and a right power chamber; the valve body is provided with a grease suction port and a grease discharge port which are connected with the grease pump chamber, the grease suction port is used to be connected with a grease storage container, and the grease discharge port is used to be connected with a lubrication pipeline;

[0008] A first electrically controlled switching valve includes three oil ports, the three oil ports are respectively used to connect to a hydraulic pump, an oil tank and a hydraulic actuator, the first electrically controlled switching valve has a first valve position that enables the hydraulic pump to supply oil to the hydraulic actuator and a second valve position that enables the hydraulic actuator to return oil to the oil tank;

[0009] The second electrically controlled switching valve includes four oil ports, which are respectively connected to the hydraulic pump, the oil tank, the left power chamber and the right power chamber. The second electrically controlled switching valve has: a first working position in which the hydraulic pump is connected to the left power chamber, and the right power chamber is connected to the oil tank; and a second working position in which the hydraulic pump is connected to the right power chamber, and the left power chamber is connected to the oil tank.

[0010] The beneficial effects of this solution are as follows: during use, when the hydraulic actuator needs to be activated, such as braking, the hydraulic pump draws hydraulic oil from the oil tank and pumps it to the first electrically controlled switching valve, the first electrically controlled switching valve switches to the first valve position, and the hydraulic oil drives the hydraulic actuator to perform the corresponding action. After the execution is completed, the first electrically controlled switching valve switches to the second valve position. When centralized lubrication is required, the hydraulic pump draws hydraulic oil from the oil tank and pumps it to the second electrically controlled switching valve, the second electrically controlled switching valve switches to the second working position, driving the plunger of the grease injector to move from right to left, generating vacuum suction in the grease pump chamber, and the grease in the grease storage container can be extracted and pumped along the suction line of the valve body. The grease port enters the grease pump chamber, and then the second electrically controlled switching valve switches to the first working position, driving the plunger of the grease injector to move from left to right, thereby pumping the grease in the grease pump chamber to the lubrication pipeline through the grease discharge port to achieve centralized lubrication; in this process, since the diameter of the left power chamber is larger and the diameter of the grease pump chamber is smaller, the pressure of the grease in the grease pump chamber is greater than the pressure of the hydraulic oil in the left power chamber, that is, the boosting function is achieved; from the above working process, it can be seen that the present application utilizes hydraulic oil to drive the reciprocating movement of the plunger, and there is no need to set a return spring, and there is no problem of damage to the return spring due to age, and the boosting function can be achieved by utilizing different diameters of the plunger.

[0011] Furthermore, the pipelines connected to the grease suction port and the grease discharge port are provided with one-way valves in opposite directions, so that during grease suction, only the grease in the grease storage container can enter the grease pump cavity, and during grease discharge, the grease can only go out from the grease discharge port.

[0012] Furthermore, the hydraulic lubrication integrated system includes a grease storage container, which includes an inner cavity, in which a spring and a piston are arranged, and an outlet of the grease storage container is arranged at an end of the piston away from the spring. Compared with the lubrication pump of the traditional centralized lubrication system, this structure does not have a motor, a transmission mechanism, a plunger pair and other structures, and has a simpler structure and lower cost.

[0013] Furthermore, the grease discharge port is arranged on the side of the grease pump cavity away from the power cavity, the grease suction port is arranged on the side of the grease pump cavity close to the power cavity, and a one-way valve is arranged on the pipeline connected to the grease discharge port. In this structure, when the plunger moves to the left to leak out the grease suction port, the grease can be sucked from the grease storage container, and when the plunger moves to the right, the grease suction port is blocked, and the grease is only discharged from the grease discharge port. This structure only needs one one-way valve to meet the needs.

[0014] Furthermore, a throttle valve is provided on the pipeline between the hydraulic pump and the second electronically controlled switching valve. By providing the throttle valve, the pressure of the hydraulic oil entering the power chamber of the grease injector can be reduced, because the movement of the piston of the grease injector does not require too much pressure to meet the demand. If the pressure is not reduced, excessive pressure will damage the seal in the grease injector and accelerate the damage of the seal.

[0015] Furthermore, the second electrically-controlled switching valve is a two-position four-way solenoid valve.

[0016] Furthermore, the hydraulic lubrication integrated system comprises a distributor, and the grease discharge port is communicated with the inlet of the distributor.

[0017] Furthermore, an overflow valve is connected between the grease discharge port and the distributor, and the overflow port of the overflow valve is connected to the outlet of the grease storage container.

[0018] Furthermore, a pressure detection module is provided on the pipeline between the second electronically controlled switching valve and the grease injector. When the pressure exceeds the set value, the second electronically controlled switching valve is controlled to switch direction. The setting of the pressure detection module can realize the automatic switching of the second electronically controlled switching valve, because when the plunger moves into position in one direction, the pressure of the power oil circuit will increase. The pressure detection module can detect that the plunger has moved into position and needs to switch direction.

[0019] Furthermore, a pressure detection module is provided between the grease suction port and the grease storage container. When the pressure is detected to be lower than the set value, an alarm is sounded to indicate that the grease is abnormal. Since the grease in the grease storage container may run out or the grease may be too viscous to flow smoothly, the pressure detection module can be provided to obtain this information in a timely manner, avoid the problem of emptying the grease chamber, and timely eliminate the fault or replenish the grease to ensure the effective and uninterrupted operation of the lubrication system.

[0020] Furthermore, the hydraulic lubrication integrated system includes an oil tank for storing hydraulic oil.

[0021] Furthermore, the throttle valve is an adjustable throttle valve, which can be quickly adjusted according to the pressure requirements of different hydraulic systems and different grease injectors.

[0022] The technical scheme of the wind power generation equipment of the utility model is as follows: The wind power generation equipment comprises:

[0023] A hydraulic pump, used to draw hydraulic oil from a tank storing the hydraulic oil;

[0024] The grease injector comprises a valve body and a plunger which is assembled in the valve body with a sliding seal, the plunger comprises a large diameter section and a small diameter section, a power chamber and a grease pump chamber are respectively arranged in the valve body corresponding to the large diameter section and the small diameter section, and the large diameter section divides the power chamber into a left power chamber and a right power chamber; the valve body is provided with a grease suction port and a grease discharge port which are connected with the grease pump chamber, the grease suction port is used to be connected with a grease storage container, and the grease discharge port is used to be connected with a lubrication pipeline;

[0025] A first electrically controlled switching valve includes three oil ports, the three oil ports are respectively used to connect to a hydraulic pump, an oil tank and a hydraulic actuator, the first electrically controlled switching valve has a first valve position that enables the hydraulic pump to supply oil to the hydraulic actuator and a second valve position that enables the hydraulic actuator to return oil to the oil tank;

[0026] The second electrically controlled switching valve includes four oil ports, which are respectively connected to the hydraulic pump, the oil tank, the left power chamber and the right power chamber. The second electrically controlled switching valve has: a first working position in which the hydraulic pump is connected to the left power chamber, and the right power chamber is connected to the oil tank; and a second working position in which the hydraulic pump is connected to the right power chamber, and the left power chamber is connected to the oil tank.

[0027] The beneficial effects of this solution are as follows: during use, when the hydraulic actuator needs to be activated, such as braking, the hydraulic pump draws hydraulic oil from the oil tank and pumps it to the first electrically controlled switching valve, the first electrically controlled switching valve switches to the first valve position, and the hydraulic oil drives the hydraulic actuator to perform the corresponding action. After the execution is completed, the first electrically controlled switching valve switches to the second valve position. When centralized lubrication is required, the hydraulic pump draws hydraulic oil from the oil tank and pumps it to the second electrically controlled switching valve, the second electrically controlled switching valve switches to the second working position, driving the plunger of the grease injector to move from right to left, generating vacuum suction in the grease pump chamber, and the grease in the grease storage container can be extracted and pumped along the suction line of the valve body. The grease port enters the grease pump chamber, and then the second electrically controlled switching valve switches to the first working position, driving the plunger of the grease injector to move from left to right, thereby pumping the grease in the grease pump chamber to the lubrication pipeline through the grease discharge port to achieve centralized lubrication; in this process, since the diameter of the left power chamber is larger and the diameter of the grease pump chamber is smaller, the pressure of the grease in the grease pump chamber is greater than the pressure of the hydraulic oil in the left power chamber, that is, the boosting function is achieved; from the above working process, it can be seen that the present application utilizes hydraulic oil to drive the reciprocating movement of the plunger, and there is no need to set a return spring, and there is no problem of damage to the return spring due to age, and the boosting function can be achieved by utilizing different diameters of the plunger.

[0028] Furthermore, the pipelines connected to the grease suction port and the grease discharge port are provided with one-way valves in opposite directions, so that during grease suction, only the grease in the grease storage container can enter the grease pump cavity, and during grease discharge, the grease can only go out from the grease discharge port.

[0029] Furthermore, the hydraulic lubrication integrated system includes a grease storage container, which includes an inner cavity, in which a spring and a piston are arranged, and an outlet of the grease storage container is arranged at an end of the piston away from the spring. Compared with the lubrication pump of the traditional centralized lubrication system, this structure does not have a motor, a transmission mechanism, a plunger pair and other structures, and has a simpler structure and lower cost.

[0030] Furthermore, the grease discharge port is arranged on the side of the grease pump cavity away from the power cavity, the grease suction port is arranged on the side of the grease pump cavity close to the power cavity, and a one-way valve is arranged on the pipeline connected to the grease discharge port. In this structure, when the plunger moves to the left to leak out the grease suction port, the grease can be sucked from the grease storage container, and when the plunger moves to the right, the grease suction port is blocked, and the grease is only discharged from the grease discharge port. This structure only needs one one-way valve to meet the needs.

[0031] Furthermore, a throttle valve is provided on the pipeline between the hydraulic pump and the second electronically controlled switching valve. By providing the throttle valve, the pressure of the hydraulic oil entering the power chamber of the grease injector can be reduced, because the movement of the piston of the grease injector does not require too much pressure to meet the demand. If the pressure is not reduced, excessive pressure will damage the seal in the grease injector and accelerate the damage of the seal.

[0032] Furthermore, the second electrically-controlled switching valve is a two-position four-way solenoid valve.

[0033] Furthermore, the hydraulic lubrication integrated system comprises a distributor, and the grease discharge port is communicated with the inlet of the distributor.

[0034] Furthermore, an overflow valve is connected between the grease discharge port and the distributor, and the overflow port of the overflow valve is connected to the outlet of the grease storage container.

[0035] Furthermore, a pressure detection module is provided on the pipeline between the second electronically controlled switching valve and the grease injector. When the pressure exceeds the set value, the second electronically controlled switching valve is controlled to switch direction. The setting of the pressure detection module can realize the automatic switching of the second electronically controlled switching valve, because when the plunger moves into position in one direction, the pressure of the power oil circuit will increase. The pressure detection module can detect that the plunger has moved into position and needs to switch direction.

[0036] Furthermore, a pressure detection module is provided between the grease suction port and the grease storage container. When the pressure is detected to be lower than the set value, an alarm is sounded to indicate that the grease is abnormal. Since the grease in the grease storage container may run out or the grease may be too viscous to flow smoothly, the pressure detection module can be provided to obtain this information in a timely manner, avoid the problem of emptying the grease chamber, and timely eliminate the fault or replenish the grease to ensure the effective and uninterrupted operation of the lubrication system.

[0037] Furthermore, the hydraulic lubrication integrated system includes an oil tank for storing hydraulic oil.

[0038] Furthermore, the throttle valve is an adjustable throttle valve, which can be quickly adjusted according to the pressure requirements of different hydraulic systems and different grease injectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the principle of Example 1 of a hydraulic lubrication integrated system of the utility model;

[0040] Figure 2 for Figure 1 Schematic diagram of the lubrication module;

[0041] Figure 3 This is a schematic diagram of a lubrication module of Embodiment 2 of a hydraulic lubrication integrated system of the utility model;

[0042] In the figure: 1- oil tank, 2- level gauge, 3- air filter, 4- hydraulic pump, 5- junction box assembly, 6- motor, 7.1-7.5 are one-way valves, 8- manual pump, 9- oil receiving pan, 10- rubber pad, 11- pressure measuring hose, 12- pressure gauge, 13.1-13.4 are pressure measuring joints, 14- accumulator, 15- filter, 16- overflow valve, 18- pressure sensor, 19.1- adjustable flow valve, 19.2- throttle valve, 20- first electronically controlled switching valve, 21.1-21.2 are pressure reducing valves, 22.1-22.2 are pressure switches, 23-grease injector, 231-valve body, 2311-power chamber, 2312-grease pump chamber, 2313-grease suction port, 2314-grease discharge port, 232-plunger, 2321-large diameter section, 2322-small diameter section, 24-overflow valve, 25-distributor, 26-grease storage container, 261-spring, 262-piston, 27-second electronically controlled switching valve, 28-hydraulic actuator. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0045] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0046] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0047] Embodiment 1 of a hydraulic lubrication integrated system of the utility model: The hydraulic lubrication integrated system is a part of a wind power generation device and is installed in a wind turbine, such as Figure 1 As shown, the hydraulic lubrication integrated system mainly includes an oil tank 1, a liquid level meter 2, an air filter 3, a hydraulic pump 4, a junction box assembly 5, a motor 6, a one-way valve 7.1-7.5, a manual pump 8, an oil receiving pan 9, a pressure gauge 12, a pressure measuring joint, an accumulator 14, a filter 15, a relief valve, a pressure sensor, a throttle valve 19.2, a first electrically controlled switching valve 20, a second electrically controlled switching valve 27, a pressure reducing valve 21.1-21.2, a pressure switch 22.1-22.2, a grease injector 23, a relief valve, a distributor 25, a grease storage container 26, a second electrically controlled switching valve 27, etc., and the interfaces with the system include a hydraulic actuator 28 and lubrication pipelines and joints, etc.

[0048] The hydraulic pump 4 is a gear pump, which is driven by a motor 6 and is controlled by the system, and is used to draw hydraulic oil from an oil tank 1 storing hydraulic oil.

[0049] like Figure 2As shown, the grease injector 23 includes a valve body 231 and a plunger 232 which is slidably and sealably assembled in the valve body 231. The plunger 232 includes a large diameter section 2321 and a small diameter section 2322. The valve body 231 is provided with a power chamber 2311 and a grease pump chamber 2312 corresponding to the large diameter section 2321 and the small diameter section 2322. The large diameter section 2321 is slidably and sealably matched with the power chamber 2311, and the small diameter section 2322 is slidably and sealably matched with the grease pump chamber 2312. 321 separates the power chamber 2311 into a left power chamber 2311 and a right power chamber 2311; the valve body 231 is provided with a grease suction port 2313 and a grease discharge port 2314 which are connected to the grease pump chamber 2312. In this embodiment, the grease suction port 2313 and the grease discharge port 2314 are both arranged at the end of the grease pump chamber 2312 away from the power chamber 2311. The grease suction port 2313 is used to communicate with the grease storage container 26, and the grease discharge port 2314 is used to communicate with the lubrication pipeline.

[0050] The first electrically controlled switching valve 20 adopts a two-position three-way solenoid valve, including three oil ports, which are respectively used to connect to the hydraulic pump 4, the oil tank 1 and the hydraulic actuator 28. The first electrically controlled switching valve 20 has a first valve position that allows the hydraulic pump 4 to supply oil to the hydraulic actuator 28 and a second valve position that allows the hydraulic actuator 28 to return oil to the oil tank 1.

[0051] The second electrically controlled switching valve 27 is a two-position four-way solenoid valve including four oil ports, which are respectively connected to the hydraulic pump 4, the oil tank 1, the left power chamber 2311 and the right power chamber 2311. The second electrically controlled switching valve 27 has: a first working position in which the hydraulic pump 4 is connected to the left power chamber 2311, and the right power chamber 2311 is connected to the oil tank 1; and a second working position in which the hydraulic pump 4 is connected to the right power chamber 2311, and the left power chamber 2311 is connected to the oil tank 1.

[0052] One-way valves 7.4 and 7.5 in opposite directions are arranged on the pipeline connected to the grease suction port 2313 and the grease discharge port 2314. This arrangement can ensure that during grease suction, only the grease in the grease storage container 26 can enter the grease pump chamber 2312, and during grease discharge, the grease can only go out from the grease discharge port 2314.

[0053] The hydraulic lubrication integrated system includes a grease storage container 26, which includes an inner cavity, in which a spring 261 and a piston 262 are arranged, the piston 262 is slidably sealed with the inner cavity wall, and the outlet of the grease storage container 26 is arranged at the end of the piston 262 away from the spring 261. Compared with the lubrication pump of the traditional centralized lubrication system, this structure does not have the motor 6, the transmission mechanism, the plunger 232 pair and other structures, and the structure is simpler and the cost is lower.

[0054] A throttle valve 19.1 is provided on the pipeline between the hydraulic pump 4 and the second electronically controlled switching valve 27. It is best to use an adjustable throttle valve 19.1, which can be quickly adjusted according to the pressure requirements of different hydraulic systems and different grease injectors 23. By providing a throttle valve, the pressure of the hydraulic oil entering the power chamber 2311 of the grease injector 23 can be reduced, because the movement of the piston 262 of the grease injector 23 does not require too much pressure to meet the demand. If the pressure is not reduced, excessive pressure will damage the seal in the grease injector 23 and accelerate the damage of the seal.

[0055] The hydraulic lubrication integrated system includes a distributor 25, and the grease discharge port 2314 is connected to the inlet of the distributor 25. An overflow valve is connected between the grease discharge port 2314 and the distributor 25, and the overflow port of the overflow valve is connected to the outlet of the grease storage container 26.

[0056] A pressure detection module is provided on the pipeline between the second electrically controlled switching valve 27 and the grease injector 23. The pressure detection module may be a pressure switch or a pressure sensor. When the pressure exceeds a set value, the second electrically controlled switching valve 27 is controlled to switch direction. The setting of the pressure detection module can realize the automatic switching of the second electrically controlled switching valve 27, because when the plunger 232 moves into position in one direction, the pressure of the power oil circuit will increase. The pressure detection module can detect that the plunger 232 moves into position and needs to switch direction.

[0057] A pressure detection module is provided between the grease suction port 2313 and the grease storage container 26. The pressure detection module may be a pressure switch or a pressure sensor. When the pressure is detected to be lower than the set value, an alarm is sounded to indicate that the grease is abnormal. Since the grease in the grease storage container 26 may run out or the grease may be too viscous to flow smoothly, the pressure detection module can be provided to obtain such information in a timely manner, thereby avoiding the problem of emptying the grease pump chamber 2312, timely troubleshooting or replenishing grease, and ensuring the effective and uninterrupted operation of the lubrication system.

[0058] During use, when the hydraulic actuator 28 needs to be activated, such as braking, the hydraulic pump 4 draws hydraulic oil from the oil tank 1 and pumps it to the first electrically controlled switching valve 20, the first electrically controlled switching valve 20 switches to the first valve position, and the hydraulic oil drives the hydraulic actuator 28 to perform the corresponding action. After the execution is completed, the first electrically controlled switching valve 20 switches to the second valve position. When centralized lubrication is required, the hydraulic pump 4 draws hydraulic oil from the oil tank 1 and pumps it to the second electrically controlled switching valve 27, the second electrically controlled switching valve 27 switches to the second working position, driving the plunger 232 of the grease injector 23 to move from right to left, generating vacuum suction in the grease pump chamber 2312, so that the grease in the grease storage container 26 can be extracted and enter the grease pump chamber along the grease suction port 2313 of the valve body 231. 2312, and then the second electrically-controlled switching valve 27 switches to the first working position, driving the plunger 232 of the grease injector 23 to move from left to right, thereby pumping the grease in the grease pump chamber 2312 to the lubrication pipeline through the grease discharge port 2314 to achieve centralized lubrication; in this process, since the diameter of the left power chamber 2311 is larger and the diameter of the grease pump chamber 2312 is smaller, the pressure of the grease in the grease pump chamber 2312 is greater than the pressure of the hydraulic oil in the left power chamber 2311, that is, the boosting function is achieved; it can be seen from the above working process that the present application utilizes hydraulic oil to drive the reciprocating movement of the plunger 232, there is no need to set a return spring, there is no problem of damage to the return spring due to age, and the boosting function can be achieved by utilizing different diameters of the plunger 232.

[0059] Embodiment 2 of a hydraulic lubrication integrated system of the utility model: The difference from embodiment 1 is that the grease discharge port 2314 is arranged on the side of the grease pumping chamber 2312 away from the power chamber 2311, the grease suction port 2313 is arranged on the side of the grease pumping chamber 2312 close to the power chamber 2311, and a one-way valve 7.4 is arranged on the pipeline connected to the grease discharge port 2314. In this structure, when the plunger 232 moves to the left to leak out the grease suction port 2313, the grease can be sucked from the grease storage container 26, and when the plunger 232 moves to the right, the grease suction port 2313 is blocked, and the grease is only discharged from the grease discharge port 2314. This structure only needs one one-way valve to meet the demand.

[0060] A specific embodiment of the wind power generation equipment of the utility model: The wind power generation equipment includes the hydraulic lubrication integrated system and other components as in the above embodiment. The structures of the other components are prior art and will not be described in detail.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. Hydraulic lubrication integrated system, characterized in that: include: A hydraulic pump, used to draw hydraulic oil from a tank storing the hydraulic oil; The grease injector comprises a valve body and a plunger which is assembled in the valve body with a sliding seal, the plunger comprises a large diameter section and a small diameter section, a power chamber and a grease pump chamber are respectively arranged in the valve body corresponding to the large diameter section and the small diameter section, and the large diameter section divides the power chamber into a left power chamber and a right power chamber; the valve body is provided with a grease suction port and a grease discharge port which are connected with the grease pump chamber, the grease suction port is used to be connected with a grease storage container, and the grease discharge port is used to be connected with a lubrication pipeline; A first electrically controlled switching valve includes three oil ports, the three oil ports are respectively used to connect to a hydraulic pump, an oil tank and a hydraulic actuator, the first electrically controlled switching valve has a first valve position that enables the hydraulic pump to supply oil to the hydraulic actuator and a second valve position that enables the hydraulic actuator to return oil to the oil tank; The second electrically controlled switching valve includes four oil ports, which are respectively connected to the hydraulic pump, the oil tank, the left power chamber and the right power chamber. The second electrically controlled switching valve has: a first working position in which the hydraulic pump is connected to the left power chamber, and the right power chamber is connected to the oil tank; and a second working position in which the hydraulic pump is connected to the right power chamber, and the left power chamber is connected to the oil tank.

2. The hydraulic lubrication integrated system according to claim 1, characterized in that: One-way valves with opposite directions are arranged on the pipelines connected to the liposuction port and the lipodischarge port.

3. The hydraulic lubrication integrated system according to claim 1 or 2, characterized in that: The hydraulic lubrication integrated system comprises a grease storage container, which comprises an inner cavity in which a spring and a piston are arranged, and an outlet of the grease storage container is arranged at an end of the piston away from the spring.

4. The hydraulic lubrication integrated system according to claim 1, characterized in that: The grease discharge port is arranged at a side of the grease pump cavity away from the power cavity, the grease suction port is arranged at a side of the grease pump cavity close to the power cavity, and a one-way valve is arranged on the pipeline connected to the grease discharge port.

5. The hydraulic lubrication integrated system according to claim 1 or 2, characterized in that: A throttle valve is arranged on the pipeline between the hydraulic pump and the second electronically controlled switching valve.

6. The hydraulic lubrication integrated system according to claim 1 or 2, characterized in that: The second electrically controlled switching valve is a two-position four-way solenoid valve.

7. The hydraulic lubrication integrated system according to claim 3, characterized in that: The hydraulic lubrication integrated system comprises a distributor, and the grease discharge port is communicated with the inlet of the distributor.

8. The hydraulic lubrication integrated system according to claim 7, characterized in that: An overflow valve is connected between the grease discharge port and the distributor, and the overflow port of the overflow valve is communicated with the outlet of the grease storage container.

9. The hydraulic lubrication integrated system according to claim 1, characterized in that: A pressure detection module is provided on the pipeline between the second electronically controlled switching valve and the grease injector. When the pressure exceeds a set value, the second electronically controlled switching valve is controlled to switch direction.

10. The hydraulic lubrication integrated system according to claim 3, characterized in that: A pressure detection module is provided between the grease suction port and the grease storage container. When the pressure is detected to be lower than the set value, an alarm is sounded to indicate abnormal grease inflow.

11. The hydraulic lubrication integrated system according to claim 1 or 2, characterized in that: The integrated hydraulic lubrication system includes a tank for storing hydraulic oil.

12. The hydraulic lubrication integrated system according to claim 5, characterized in that: The throttle valve is an adjustable throttle valve.

13. A wind power generation device, characterized in that: Comprising the hydraulic lubrication integrated system as described in any one of claims 1-12.

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