Automatic pressure supplementing device of elastic support

Abstract

The utility model discloses an automatic pressure supplementing device of an elastic support, which relates to the field of maintenance of offshore units and is characterized in that the automatic pressure supplementing device is mounted on a cross beam of the elastic support on the left side of a wind wheel, is provided with a pressure supply pipeline and a vacuumizing pipeline and comprises a water tank, and a vacuumizing pump and an electric pump are mounted at the top end of the water tank. A power source is provided for the pressure supply pipeline and the vacuumizing pipeline of the device through the pump, the pressure supply pipeline is used for communicating the air wheel and the water tank, and the effect is that when the pressure sensor detects that the system pressure is higher than the set pressure, no action exists; when the system pressure is lower than the set pressure, the electric pump is started through the controller, the pressure supply pipeline is controlled to input oil into the fan system, and therefore pressure supplementing is conducted. And when the pressure supplementing pressure reaches the pressure set by the pressure sensor, the pressure sensor generates a signal, and the operation of the electric pump is stopped through the controller, so that the purpose of automatic pressure supplementing is achieved, and sufficient elastic supporting pressure of the gear box is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to offshore unit maintenance field, more specifically, it relates to an automatic pressure supplementing device of elastic support. BACKGROUND

[0002] The maintenance of offshore units faces many challenges, and the short maintenance window period is a key problem. Due to the particularity of the offshore environment, such as bad and changeable weather conditions, unit maintenance operations can only be carried out during specific relatively stable weather periods, which results in a very limited maintenance window period. For the hydraulic elastic support of the gear box, this situation is very unfavorable. The hydraulic elastic support of the gear box plays a crucial role in the operation of the unit, which can effectively buffer various impact forces on the gear box and ensure that the gear box works in a relatively stable mechanical environment.

[0003] However, when the elastic support pressure is insufficient, its buffering effect will be greatly reduced. This means that the gear box will bear more external impact and vibration during operation, causing the internal components of the gear box to be more prone to wear, fatigue and even damage. In this state for a long time, not only will the service life of the gear box be shortened, but also frequent failures may occur, which will further affect the normal operation of the entire offshore unit. The short maintenance window period makes it difficult to check, repair and supplement pressure and other maintenance operations when the elastic support pressure is insufficient, further exacerbating the severity of the problem, causing the equipment to be in a sub-healthy state for a long time, increasing the operating cost and safety risk, and only by increasing the number of operations can the normal operation of the offshore unit be maintained, which undoubtedly increases the maintenance cost (the cost of offshore wind turbine operation is high, first of all, the transportation cost, since the offshore wind turbine is located offshore, the operation and maintenance personnel and equipment need to reach the wind turbine location through a professional ship, the lease, fuel and related navigation fees of the ship are very high. Moreover, the weather conditions at sea are complex and changeable, and the suitable operation window period is limited, sometimes the operation work may be delayed due to bad weather, resulting in multiple round trips of the ship, further increasing the cost.

[0004] Therefore, in order to solve the above technical problems, the present application provides an automatic pressure supplementing device of elastic support. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an automatic pressure supplementing device of elastic support.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: an automatic pressure compensation device of elastic support is installed on the crossbeam of the left elastic support of the wind wheel, has pressure supply pipeline and vacuum pipeline, includes the water tank, the top of water tank is installed with vacuum pump and electric pump, provides power source to the pressure supply pipeline and vacuum pipeline of this device through the pump, the pressure supply pipeline is used for connecting the wind wheel and water tank, the vacuum pipeline is connected with water tank, the side end of water tank is installed with the electric box of power supply to the electric appliance on the device, the automatic pressure compensation device of elastic support still includes:

[0007] Pressure sensor is used for detecting the pressure of fan system and sending corresponding pressure signal;

[0008] Controller controls the pressure supply of pressure supply pipeline according to the signal of pressure sensor, thereby realizing automatic pressure compensation.

[0009] Preferably, the installation valve and the check valve are installed on the pressure supply pipeline, the installation valve can be conveniently connected during the installation of the pipeline system, and the check valve can ensure that the pressure fluid flows in the predetermined direction.

[0010] Preferably, the vacuum switch is installed behind the pressure sensor, the switch is pulled to the lower position when vacuumizing to prevent air leakage and prevent negative pressure from damaging the pressure sensor. When the vacuum is completed, the switch is pulled to the upper position to seal the vacuum, and liquid can be injected at the same time.

[0011] Preferably, the pressure digital display meter is arranged on the water tank to display the system pressure data of the fan in real time, so that the staff can know the situation in time.

[0012] Preferably, the installation structure is installed at the bottom of the water tank.

[0013] Preferably, the installation structure includes the I-shaped block fixed at the bottom of the water tank, and the I-shaped groove seat fixed on the crossbeam of the left elastic support of the wind wheel and having one side opening, the side end of the I-shaped block is fixedly connected with a screw rod, a through hole for the screw rod to pass through is formed in the end of the I-shaped groove seat opposite to the opening end, and a nut is threadedly connected with the outer side wall of the screw rod, so that the installation is convenient.

[0014] Preferably, the recessed groove seat is fixedly connected with the opening end of the I-shaped groove seat at the lower part of the opening, guide rails for the sliding blocks to slide are fixedly connected with the two sides in the recessed groove seat, a horizontal plate is fixedly connected between the sliding blocks, a spring is installed between the bottom end of the horizontal plate and the inner bottom wall of the recessed groove seat, and a blocking block is fixedly connected with the top end of the horizontal plate, so that the installation operation of the staff is more convenient.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model discloses when pressure sensor detects that system pressure is higher than set pressure, no action, when system pressure is lower than set pressure, through the controller starts electric pump to reach the purpose of supplementing pressure to the fan system inside with the oil liquid of control pressure pipeline input. When the pressure of supplementing pressure reaches the pressure of pressure sensor setting, the signal of pressure sensor occurs, and through the controller stops the operation of electric pump to realize the purpose of automatic pressure compensation, thereby guaranteeing that the elastic support pressure of gear box is sufficient, can effectively reduce the operation and maintenance frequency, reduces the maintenance cost, to solve the problem that long-term in the background art under the condition of insufficient elastic support pressure, not only can shorten the service life of gear box, but also can frequently cause the fault, and then influence the normal operation of whole offshore unit.

[0017] 2. The utility model discloses installing the vacuumizing switch behind pressure sensor, when vacuumizing, the switch is pulled to the lower position, prevents the air leakage, prevents the negative pressure damage pressure sensor.

[0018] 3. The utility model discloses the way of first limiting and then fixed can conveniently install the device on the crossbeam of wind wheel left side elastic support.

[0019] 4. The utility model discloses after the insertion of the i-shaped block is completed, the blocking block has no blocking force, the spring starts reverse extension, thereby resetting the blocking block to make it block the opening of the i-shaped groove seat upwards to restrict the i-shaped block in the i-shaped groove seat, and in the later installation process, the staff does not need to hold, and it is more convenient for the staff to install and operate. SHEET DESCRIPTION

[0020] The drawings explained here are used to provide further understanding of the utility model, and constitute a part of this application, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0021] Figure 1 It is the whole structure schematic diagram of the utility model;

[0022] Figure 2 It is the bottom specific structure schematic diagram of the utility model;

[0023] Figure 3 It is the i-shaped groove seat connecting structure schematic diagram in the utility model;

[0024] Figure 4 It is the specific structure schematic diagram of the i-shaped groove seat after removing the groove seat and its connecting structure in the utility model;

[0025] Figure 5 It is the internal connecting structure schematic diagram of the groove seat in the utility model.

[0026] In the drawing: 1, water tank, 2, vacuumizing pump, 3, electric pump, 4, electric box,

[0027] 5, mounting structure; 501, I-shaped block; 502, I-shaped groove seat; 503, screw; 504, through hole; 505, groove seat; 506, guide rail; 507, sliding block; 508, cross plate; 509, spring; 510, blocking block;

[0028] 6, pressure digital display meter. DETAILED DESCRIPTION

[0029] As Figures 1-5 shown, the utility model provides a kind of automatic pressure compensation device of elastic support, it is installed on the beam of elastic support left side of wind wheel, with pressure supply line and vacuum line, including water tank 1, the top of water tank 1 is equipped with vacuum pump 2 and electric pump 3, power source is provided to the pressure supply line and vacuum line of this device by above-mentioned pump, the pressure supply line is used to connect wind wheel and water tank 1, the vacuum line is connected with water tank 1, the side end of water tank 1 is equipped with the electric box 4 of the power supply of electric appliance on device;The automatic pressure compensation device of elastic support further includes:

[0030] Pressure sensor, for detecting the pressure of fan system, and corresponding pressure signal is sent, pressure digital display meter 6 is provided on the water tank 1, for real-time display fan system pressure data;

[0031] Controller, according to the signal of pressure sensor transmission, controls the pressure supply of pressure supply line, to realize automatic pressure compensation.

[0032] Sufficient oil is placed in water tank 1 in advance, this device is installed on the beam of elastic support left side of wind wheel, during use, when fan equipment stops, it will automatically send power (AC380V three-phase power + zero line) to pressure compensation device, after this device is powered, pressure sensor will start to operate, to detect pressure, and real-time display is shown through pressure digital display meter 6, to facilitate staff to understand situation in time. (It needs to be explained that current transformer will be set in the main circuit of fan. When fan operates, current flows in main circuit, and current transformer will sense current signal, and convert it into smaller secondary side current signal. This signal is transmitted to relay, and relay will judge the running state of fan according to received current signal. When fan operates normally, relay coil is powered, and its normally closed contact is disconnected, when fan stops, main circuit current disappears, and current transformer secondary side has no signal output, and relay coil loses power. At this time, the normally closed contact of relay restores closed state, and this normally closed contact is connected in the control link of power supply circuit of pressure compensation device. When normally closed contact is closed, power supply in electric box 4 will be connected to pressure compensation device, to realize automatic power supply.)

[0033] When the pressure sensor detects that the system pressure is higher than the set pressure, no action is taken; when the system pressure is lower than the set pressure, the electric pump 3 is started by the controller, so that the oil liquid in the pressure supply pipeline is input to the inside of the fan system, so as to achieve the purpose of pressure compensation. When the pressure compensation pressure reaches the pressure set by the pressure sensor, the pressure sensor generates a signal, and the operation of the electric pump 3 is stopped by the controller.

[0034] It should be emphasized that when the pressure compensation time exceeds one hundred and twenty seconds (the time can be adjusted according to the time), even if the pressure does not reach the set pressure, the electric pump 3 will stop running, and this cycle will end. If pressure compensation is needed again, the power supply needs to be cut off and the electric pump needs to be restarted. This can prevent the electric pump from continuing to consume electricity in the case of possible faults or other abnormalities that prevent effective pressure compensation, thereby avoiding unnecessary energy waste. When the conversion knob is switched to the vacuum state, the vacuum pump 2 is connected, and vacuum can be achieved. After vacuum is completed, the replacement knob is switched to the pressure compensation state, and the electric pump 3 can automatically inject liquid and compensate pressure according to the feedback of the pressure sensor, thereby ensuring that the gear box elastic support pressure is sufficient and effectively reducing the maintenance frequency and maintenance cost. At this time, attention should be paid to the water tank 1 liquid level, and the liquid should be added in time to prevent the oil in the water tank from being sucked empty by the electric pump 3.

[0035] The specific control method of the above-mentioned automatic liquid compensation is as follows: the pressure sensor converts the pressure into an electrical signal and transmits it to the controller through a wire. In the transmission process, in order to reduce the influence of electromagnetic interference on the signal, a shielded cable is usually used, and the controller has a special input interface to receive the signal transmitted by the pressure sensor. For analog signals, the analog-to-digital converter (ADC) inside the controller will convert the received analog signal into a digital signal for subsequent processing. The controller calculates the actual pressure value according to the converted digital signal through the built-in algorithm. Then, the controller compares the calculated pressure value with the pre-set pressure threshold. When the controller determines that the pressure value is lower than the set start pressure, it will send a control signal through its output interface to start the electric pump 3. When the controller detects that the pressure value reaches or exceeds the set stop pressure, it will stop outputting the start signal or output a stop signal to the control circuit of the electric pump 3, thereby stopping the operation of the electric pump 3.

[0036] Further, the pressure supply pipeline is provided with an installation valve and a one-way valve. The installation valve can be used for convenient connection during installation of the pipeline system. For example, during initial installation of the pressure supply pipeline, the installation valve is closed, and the connection and assembly of the pipeline are performed in sections, so that the entire pipeline system is not affected by the pressure fluid during the connection process, and the workers can accurately perform the pipeline butt joint and sealing process. The one-way valve in the pressure supply pipeline can ensure that the pressure fluid flows in the predetermined direction. The one-way valve can prevent the oil from flowing back into the motor pump 3 when the motor pump 3 stops working or the pressure fluctuates, thereby ensuring the normal working order and function of the device. The pressure sensor is provided with a vacuum extraction switch. When vacuum extraction is performed, the switch is pulled to the lower position to prevent air leakage and prevent negative pressure from damaging the pressure sensor. When the vacuum extraction is completed, the switch is pulled to the upper position to seal the vacuum, and the device can be filled with liquid.

[0037] The marine unit is generally installed in a harsh environment (for example, narrow installation space, high installation height, etc.), which makes the installation of the device on the marine unit more inconvenient. Therefore, the bottom of the water tank 1 is provided with an installation structure 5. The installation structure 5 includes a I-shaped block 501 fixed to the bottom of the water tank 1, and a I-shaped groove seat 502 fixed to the left elastic support beam and having an open side. The side end of the I-shaped block 501 is fixedly connected with a screw rod 503. The end opposite to the open end of the I-shaped groove seat 502 is provided with a through hole 504 for the screw rod 503 to pass through. The outer side wall of the screw rod 503 is threadedly connected with a nut.

[0038] During installation, the I-shaped block 501 below the water tank 1 is inserted into the I-shaped groove seat 502 on the left elastic support beam, thereby being limited. When the I-shaped block 501 is completely inserted, the screw rod 503 on the I-shaped block 501 passes through the through hole 504 on the I-shaped groove seat 502. Then, the nut is rotated clockwise and installed on the screw rod 503. The nut slowly abuts against the surface of the I-shaped groove seat 502, thereby fixing the I-shaped block 501 on the I-shaped groove seat 502. The device is fixed, and the pipeline is connected later, so that the installation of the device is completed. In this way, the position is determined (limited) and then fixed, so that the workers do not need to frequently align, and the installation is convenient. Similarly, the connection of the pipeline on the device is disconnected, the nut is removed, and the I-shaped block 501 is pulled out of the I-shaped groove seat 502, so that the device is disassembled.

[0039] Further, the open end of the I-shaped groove seat 502 is fixedly connected with a groove seat 505 at the lower part of the opening, both sides of the interior of the groove seat 505 are fixedly connected with guide rails 506 for the sliding of sliding blocks 507, the sliding blocks 507 are fixedly connected with a horizontal plate 508, the bottom end of the horizontal plate 508 is installed with a spring 509 between the inner bottom wall of the groove seat 505, the top end of the horizontal plate 508 is fixedly connected with a blocking block 510, that is, before the I-shaped block 501 is inserted into the I-shaped groove seat 502, the blocking block 510 is pressed and moved downward, and is pressed into the groove seat 505, the blocking block 510 drives the downward movement of the horizontal plate 508, the horizontal plate 508 drives the downward movement of the sliding blocks 507, the sliding blocks 507 slide downward along the guide rails 506, so as to maintain the linear movement of the horizontal plate 508, and the spring 509 is pressed, so as to prevent the blocking block 510 from being blocked when the I-shaped block 501 is inserted into the I-shaped groove seat 502, after the insertion of the I-shaped block 501 is completed, the blocking block 510 is no longer blocked, and the spring 509 starts to be reversely elongated, so as to reset the blocking block 510, so as to block the opening of the I-shaped groove seat 502 upward, so as to limit the I-shaped block 501 in the I-shaped groove seat 502, in the later installation process, the staff does not need to hold by hand, which is more convenient for the staff to install and operate, and the blocking block 510 is pressed into the groove seat 505 again, so that the I-shaped block 501 can be pulled out of the I-shaped groove seat 502.

[0040] The above is only a preferred embodiment of the present application, and does not limit the present application in any form; any ordinary technical personnel in the industry can implement the present application according to the above description and the drawings; however, any equivalent changes, modifications and evolution of the above-mentioned technical content without departing from the technical scheme of the present application are equivalent embodiments of the present application; meanwhile, any equivalent changes, modifications and evolution of the above-mentioned technical content without departing from the technical scheme of the present application are equivalent embodiments of the present application.

Claims

1. A resiliently supported automatic pressure compensation device, which is installed on a resiliently supported crossbeam on the left side of a wind wheel, has a pressure supply line and a vacuum extraction line, characterized in that: Including water tank (1), the top of water tank (1) is equipped with vacuum pump (2) and electric pump (3), and the power supply of the pressure pipeline and the vacuum pipeline of the device is provided by the pump, the pressure pipeline is used to connect the fan and water tank (1), the vacuum pipeline is connected with water tank (1), the side end of water tank (1) is equipped with the electric box (4) for supplying power to the electric appliance on the device;The elastic support automatic pressure compensation device further comprises: Pressure sensor, for detecting the pressure of the fan system, and sending corresponding pressure signal; Controller (7), according to the signal transmitted by the pressure sensor, controls the pressure supply of the pressure pipeline, so as to realize automatic pressure compensation.

2. A spring supported automatic pressure compensator according to claim 1, characterized in that: The pressure pipeline is provided with installation valve and check valve.

3. A resiliently supported automatic pressure compensator according to claim 1, characterized in that: The rear of the pressure sensor is provided with vacuum switch.

4. A resiliently supported automatic pressure compensator according to claim 3, characterised in that: The water tank (1) is provided with pressure digital display (6) for displaying the system pressure data of the fan in real time.

5. A resiliently supported automatic pressure compensator according to claim 4, characterised in that: The bottom of the water tank (1) is provided with mounting structure (5).

6. A resiliently supported automatic pressure compensator according to claim 5, characterised in that: The mounting structure (5) comprises a I-shaped block (501) fixed on the bottom of the water tank (1), and a I-shaped groove seat (502) fixed on the elastic support crossbeam on the left side of the fan and having an open side, the side end of the I-shaped block (501) is fixedly connected with a screw rod (503), the I-shaped groove seat (502) is provided with a through hole (504) for the screw rod (503) to pass through at the end opposite to the open end, and the outer side wall of the screw rod (503) is threadedly connected with a nut.

7. A resiliently supported automatic pressure compensator according to claim 6, characterised in that: The open end of the I-shaped groove seat (502) is fixedly connected with a recess seat (505) at the lower part of the opening, the recess seat (505) is fixedly connected with guide rails (506) for sliding blocks (507) to slide at both sides of the inside, the sliding blocks (507) are fixedly connected with a cross plate (508), the bottom end of the cross plate (508) is provided with a spring (509) between the bottom wall of the recess seat (505), and the top end of the cross plate (508) is fixedly connected with a blocking block (510).

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